1. Decentralized Network: Unlike traditional firms, Ethereum operates without central control and relies on a global network of participants.

2. Two-Sided Market: Serves users (who interact with the network) and developers (who build on it).

3. Open-Source Protocol: Allows for transparent development and innovation.

4. Network Effects: Value increases with more participants, creating a self-reinforcing ecosystem.

This structure enables Ethereum to empower users unprecedentedly, particularly in data ownership and economic participation.

In the current Web2 landscape, tech giants profit from user-generated data, often without directly compensating users. Ethereum's infrastructure allows for a fundamental shift:

• Users can maintain ownership and control over their data.

• Smart contracts can automate data usage agreements and compensation.

• Potential for fair compensation when personal data (e.g., health information) is used for research or development.

This model is particularly crucial in the era of AI and LLM training, where data is increasingly valuable.

Ethereum's unique structure impacts its economic model in fascinating ways:

Costs:

• Development: Funded by the Ethereum Foundation and community contributions.

• Network Operation: Distributed among validators, significantly reduced after the shift to Proof-of-Stake.

• User Costs: Gas fees for transactions and smart contract interactions.

Revenue:

• Gas Fees: Paid by users for computation, with a portion burned (EIP-1559).

• ETH Issuance: New ETH created as rewards for validators.

• Layer 2 Contributions: L2 solutions pay fees to the main chain, contributing to base layer revenue. 

"Profit":

While Ethereum isn't a traditional profit-seeking entity, value accrual occurs through:

• Increased value of ETH due to demand and deflationary mechanisms.

• Growth of the ecosystem, enhancing the platform's utility and adoption.

A key component of Ethereum's structure is the role of validators:

• What is a Validator? Validators are participants who stake 32 ETH to run validator nodes, helping to secure the network and process transactions.

• Responsibilities: They propose new blocks, validate transactions, and attest to the state of the network.

• Rewards: Validators earn ETH rewards for their service, incentivizing network participation and security.

• Risks: Validators can face penalties or "slashing" for malicious behavior or extended downtime, ensuring network integrity.

This validator system replaces the energy-intensive mining of the previous proof-of-work model, significantly reducing Ethereum's environmental impact while maintaining security.

Ethereum's pricing structure is designed to balance network security, resource allocation, and user accessibility:

1. Gas Fees:

   • Dynamic pricing based on network demand.

   • EIP-1559 introduced a base fee (burned) and optional tip, improving fee predictability.

2. ETH Issuance:

   • Controlled issuance through validator rewards.

   • Adjusted based on network security needs and total ETH staked.

3. Layer 2 Solutions:

   • Offer users lower fees while contributing to Ethereum's base layer security and revenue.

This system allows for market-driven pricing while maintaining network security and incentivizing participation.

The unique structure of Ethereum creates numerous benefits for individuals:

1. ETH Appreciation: As the network grows, the value of ETH may increase.

2. Staking Rewards: Earn 4-6% annual yields by participating in network security.

3. Deflationary Potential: A fee-burning mechanism can increase the value of ETH holdings.

4. DeFi Participation: Access a wide range of financial services with potentially higher yields.

5. Governance Rights: Participate in decision-making for Ethereum-based projects.

Layer 2 (L2) solutions and rollups are expanding Ethereum's capabilities:

• Purpose: Increase transaction throughput and reduce fees.

• Benefits: Lower costs, faster transactions, increased accessibility.

• Impact on Ethereum: Generate revenue for the base layer while improving user experience.

Ethereum Improvement Proposal 4844 (EIP-4844) represents a significant advancement in Ethereum's scalability:

• Purpose: To introduce a new type of transaction that handles "blob" data, dramatically reducing costs for Layer 2 rollups.

• What are Blobs?: "Blobs" (Binary Large Objects) are large chunks of data that can be efficiently stored and accessed.

• Blob Space: A new, separate space on Ethereum for storing this data temporarily, allowing for more efficient data management.

• Benefits:

  • Significantly lower fees for users of Layer 2 solutions

  • Increased data throughput without compromising Ethereum's decentralization

  • A step towards full sharding, Ethereum's long-term scaling solution

EIP-4844 demonstrates Ethereum's commitment to continuous improvement and scalability, making the network more accessible and efficient for all users.

Comparing Ethereum to traditional fiscal and monetary policy reveals its revolutionary potential:

• Decentralized Monetary Policy: Predetermined and executed by code, removing human discretion.

• Transparency: All transactions and operations are publicly viewable.

• Individual Empowerment: Direct participation in the "monetary system" through staking and DeFi.

Ethereum continues to evolve, with plans for:

• Sharding: To further increase scalability.

• Adjustments to staking rewards: Optimizing network participation incentives.

• EIP-4844: Introducing new transaction types to reduce L2 costs.

These developments aim to enhance Ethereum's capacity as a global, decentralized finance and data ownership platform.

Ethereum's revolutionary market structure is redefining our digital and financial landscape. Ethereum challenges traditional notions of monetary policy and economic systems by providing a platform where individuals can own their data, participate in network security, and access various financial services.

As Ethereum evolves, it offers individuals an exciting opportunity to participate in a more transparent, accessible, and user-centric digital economy. While challenges remain, including regulatory uncertainties and ongoing technical developments, Ethereum's potential to transform our relationship with data and finance makes it a fascinating and potentially rewarding space to explore and engage with.

TL;DR

• QF is a new way to fund projects, valuing both money given and the number of supporters.

• A "matching pool" is a pot of money that adds extra funds to projects based on their support.

• Starting a matching pool helps multiple projects and ensures everyone's voice is heard.

• QF promotes teamwork in science, ensuring community-loved projects get the backing they need.

In a world where traditional funding methods often cater to the loudest voices or the deepest pockets, Quadratic Funding (QF) emerges as a refreshing alternative. It offers a distinctive approach that equally values the amount donated and the number of donors, ensuring a more democratic allocation of funds.

Quadratic Funding Explained

Quadratic Funding deviates from conventional funding mechanisms. Instead of projects getting funds solely based on the amount donated, QF introduces a twist:

1. Quantity Matters: In QF, the number of individual project supporters is pivotal. A project backed by numerous supporters will receive a more significant proportion of matching funds, even if each donation is modest.

2. Community Voice: This methodology ensures projects with widespread support from a diverse populace get prioritized, emphasizing community sentiment over individual wealth.

The Role of the Matching Pool

Central to QF is the concept of a matching pool. But what exactly is it?

The matching pool is a dedicated sum of money. As individuals donate to their favorite projects, a part of this pool is used to match their donations. The uniqueness of QF lies in how it distributes this pool. Projects with more individual supporters, indicating more expansive support, receive a heftier share. This means small contributions, when combined with community strength, can yield significant funding for a project.

Benefits of Forming a Matching Pool

For someone contemplating the creation of a matching pool, the benefits extend beyond mere monetary allocation:

1. Influence and Impact: By forming a matching pool, you're not just funding projects; you're shaping the direction of community-driven endeavors, ensuring that genuinely resonant projects thrive.

2. Diversification: It allows your funds to support multiple projects, spreading the risk and increasing the chances of backing successful, impactful initiatives.

3. Community Building: Such pools foster community engagement and collaboration, establishing you as a critical stakeholder in nurturing a vibrant ecosystem.

4. Legacy Creation: In the long run, by supporting a mechanism that prioritizes community voice, you're investing in a legacy of democratic, transparent, and inclusive support systems.

Quadratic Funding and the Future of Collaborative Endeavors

Consider the broader domain like Decentralized Science (DeSci). The essence of DeSci revolves around collaboration, transparency, and community-led initiatives. By harnessing QF, DeSci ensures community-endorsed research and projects are spotlighted and adequately resourced.

Conclusion

Quadratic Funding offers an exhilarating departure from traditional funding avenues, placing decision-making power back into community hands. While the underlying mathematics might be intricate, its core is straightforward: valuing community voice and ensuring deserving projects receive the support they merit. For those contemplating forming a matching pool, the opportunity to profoundly impact and shape this democratic landscape awaits.

Decentr3views is an innovative, open-source blockchain-based platform revolutionizing the survey, polling, and review industry. By incorporating state-of-the-art technologies like Lens (a content aggregation tool), Allo (a decentralized quadradic funding protocol), and Passport Protocols (a Web3 reputation system), our platform provides a transparent, reliable, and incentive-driven environment for consumers, manufacturers, developers, and curators, also known as r3viewers.

Market Analysis

The review industry has experienced tremendous growth over the past few years, with an increasing number of consumers relying on online reviews to make informed decisions. However, the centralized nature of existing platforms has led to issues such as fake reviews, biased opinions, and a lack of trust. Decentr3views aims to address these issues and tap into the growing Web3 space, where decentralization, transparency, and trust are fundamental principles.

Competitive Analysis

Decentr3views differentiates itself from existing review platforms through its decentralized approach, blockchain-based verification, and focus on Web3 technologies. Our platform's open-source nature encourages transparency and fosters community collaboration while integrating innovative protocols such as Lens, Allo, and Passport Protocols sets us apart from traditional review platforms.

🔑 Key Features:

- Gitcoin Passport Score Integration: Decentr3views utilizes the passport platform, initially created to combat Sybil attacks, to weight a r3viewer's impact score, allowing developers to better cater to the needs of power users and/or top NFT holders and increasing consumer trust in the curator's opinions for the same reasons.

- Incentivized Review System: Our platform provides versatile reward levels for different response types, weighted by Passport Score, and engagement metrics such as participation on Discord, Twitter, Telegram, and newsletter subscriptions. R3viewers receive increased rewards for creating impactful reviews that result in improvements and for producing reviews that other consumers find helpful and choose to upvote.

- AI-driven Insights: Decentr3views leverages AI technology to parse, summarize, and quantify reviews for developers' convenience while assessing retroactive rewards based on the usefulness of feedback provided by the r3viewers specifically if it leads to changes in the product or service.

🎯 Our Mission:

1. Empower consumers to make informed decisions by delivering high-quality, verified reviews and providing valuable insights to manufacturers and developers through genuine, on-chain verified user feedback.

2. Establish a reward system where r3viewers' reputation directly correlates to increased opportunities, earnings, and influence, leveraging their autonomy for financial gain and ensuring valid and reliable data for data seekers (companies, political polls, or surveys of any kind).

🌉 Building Trust in Reviews

Decentr3views offers a decentralized, verified, and incentivized solution to supply reliable, trustworthy data for the consumer while bridging the gap between genuine user feedback with manufacturers and developers aiming to improve their products and services. Our platform enables r3viewers to curate information for their followers, effectively advertising for companies and providing reliable information to other users based on feedback from power users.

🌟 Decentr3views Advantages 🌟

- Tailored Feedback for Developers: Decentr3views prioritizes the needs of engaged users, allowing developers to fine-tune their products and services based on genuine power user feedback.

- Open-Source Collaboration: The open-source nature of our platform promotes transparency and fosters community collaboration, enabling continuous improvement and innovation in the review ecosystem.

- Incentivized Review Structure: Decentr3views' review structure is ideal for applications like TalentDAO surveys, offering various reward levels for different response types weighted by user engagement metrics. This structure encourages heavy DAO users to provide valuable feedback, as they can earn substantial rewards. With this platform and incentive structure, a busy, heavy DAO user who provides a few star ratings can hold more weight than a newcomer or a bot who submits a video review. Additionally, high-weight users creating video reviews and driving changes receive significant financial incentives, ultimately costing less than traditional advertising, marketing, and market research expenditures. Since this is on-chain, once a review is submitted, payment is administered based on the passport impact score and the feedback's determined benefit. Should additional compensation be deserved by identifying a bug or suggesting an implemented change, retroactive funding occurs.

- AI-Driven Decision Making: Decentr3views utilizes AI technology to assess the retroactive usefulness of changes made to the dApp, process and summarize reviews, enabling data-driven decision-making and helping developers prioritize improvements based on genuine user feedback.

Revenue Model and Business Strategy

Decentr3views plans to generate revenue through a combination of platform fees, premium subscription services, and targeted advertising. Manufacturers and developers seeking valuable user feedback can subscribe to premium services that provide additional analytics, priority support, and access to a pool of top r3viewers. Targeted advertising will allow businesses to reach a specific audience based on user preferences, engagement metrics, and Passport Scores.

🚀 Join Us in Shaping the Future of Reviews 🚀

Decentr3views aims to create a transparent, trustworthy, and incentivized review platform that empowers consumers, manufacturers, developers, and r3viewers while integrating innovative features like Gitcoin Passport Score, open-source collaboration, incentivized review structures, and AI-driven insights. Together, let's build a more reliable review ecosystem for the Web3 world and redefine the future of curation, advertising, and dependable information sharing.

By leveraging these advanced technologies and strategies, Decentr3views aspires to revolutionize how user feedback is collected, analyzed, and utilized to create better products and services for everyone involved. Join us on this exciting journey as we pave the way for a more transparent, trustworthy, and efficient review landscape in the age of Web3.

Funding and Partnerships

To achieve our ambitious goals, Decentr3views will seek funding through a combination of venture capital, private investors, and strategic partnerships within the Web3 and blockchain space. These partnerships will not only provide the necessary financial support but also facilitate collaboration and knowledge sharing, enabling us to integrate the latest technologies and best practices into our platform.

Measuring Success

Decentr3views will measure its success using a variety of key performance indicators (KPIs), including:

- User growth and engagement: The number of active users, manufacturers, and developers on the platform, as well as the volume and quality of reviews generated.

- Platform revenue: The income generated through platform fees, premium subscription services, and targeted advertising.

- Reputation and trust: The improvement in the perceived trustworthiness of reviews on our platform, as well as the increase in the average Passport Score of r3viewers.

- Impact on product development: The degree to which manufacturers and developers are utilizing user feedback to improve their products and services.

We conducted three experiments to evaluate the system's performance, ease of use, and versatility.

• Stem Cell Colony Picking

• iPSC Single Cell Cloning with CellCelector Nanowell Arrays

• Organoid Picking and Transfer

In this post, we will share our experience with this innovative technology and discuss the key aspects of each experiment.

This work wouldn't have been possible without assistance from Alejandra Young, Angela Garcia, and Mark Jenesse from Sartorius and the generous gift provided to the Roop, Bilousova, and Kogut Laboratories by The Epidermolysis Bullosa Research Partnership (EBRP).

TL;DR

• The CellCelector™ Flex System is a versatile cell isolation platform with various applications in cellular research.

• The Gates Center for Regenerative Medicine utilized the system to demonstrate excellent performance in stem cell colony picking, iPSC single-cell cloning, and organoid picking and transfer.

• By automating complex workflows and offering precision picking capabilities, the CellCelector™ system holds great promise for enhancing the efficiency and accuracy of cellular research at the Gates Center and labs worldwide.

• The Epidermolysis Bullosa Research Partnership (EBRP) supports this research, aiming to find treatments for rare skin and connective tissue diseases like Epidermolysis Bullosa (EB).

Product Overview

The CellCelector™ Flex System is a cutting-edge, easy-to-use, fast, reliable, and versatile cell isolation platform with integrated traceability.

This powerful technology automates cell selection for picking induced pluripotent stem cells (iPSCs), stem cell colonies, and organoids, working with various cell types and conditions. By offering significant cost savings on consumables, media, and incubator storage space, the CellCelector™ Flex System is an attractive choice for laboratories worldwide.

Key components of the platform include a deck tray for destination vessels and buffer, a motorized high-precision X/Y stage with autofocus, an inverted microscope with a CCD camera, and a retrieval arm with a high-precision robot.

The CellCelector™ Flex Software aligns with experimental workflows and offers automated picking quality control with before and after pictures. The system has exchangeable modules for various applications, such as single-cell picking using glass capillaries, scrape picking with reusable stainless-steel tips, and semi-solid media picking with disposable plastic tips.

The platform has demonstrated success in stem cell colony picking, iPSC single-cell cloning, and organoid picking. The CellCelector™ Flex System also offers traceability for all clones from single-cell clones in 96-well plates and ensures high cell survival rates with its gentle cell detachment process.

Experiment 1: Stem Cell Colony-Picking Experiment

The primary goal of our stem cell colony-picking experiment was to assess the CellCelector's ability to pick colonies of varying sizes and proximity efficiently and accurately.

The experiment involved:

1. Imaging: We imaged a 6-well plate at 4x magnification, enabling us to run an automated colony detection and selection analysis.

2. Manual Selection: Using the Click and Pick method, we manually selected colonies and areas of interest directly from the live image on the CellCelector™ software.

3. Automatic Picking: The system automatically picked the chosen colonies using a traditional, gentle scrape method with a 500 µm stainless steel ScrapeTip™ capillary.

4. Picking Various Sizes and Proximities: We picked small, medium, and large colonies, multiple portions of the same colony, and closely neighboring colonies to test the system's precision and versatility.

5. Dissociation Treatment(s): After treating colonies with EDTA, we picked additional colonies using the scraping tool to evaluate the system's performance with different cell detachment conditions.

6. Colony Deposition: We deposited the picked colonies into two separate 12-well plates to further assess the CellCelector's accuracy and efficiency.

Experimental Conclusions:

The CellCelector™ demonstrated exceptional performance in our stem cell colony-picking experiment, proving its value as a reliable and versatile tool for various cellular research applications. With its automated features, precise picking capabilities, and compatibility with different detachment conditions, the CellCelector™ holds great promise for enhancing the efficiency and accuracy of cellular research for the Gates Center.

Experiment 2: iPSC Single Cell Cloning with CellCelector Nanowell Arrays

In addition to the stem cell colony-picking experiment, we also conducted an induced pluripotent stem cell (iPSC) single-cell cloning experiment using the CellCelector™ system. For this experiment, we utilized the CellCelector™ Nanowell Arrays, specifically the 24-well plate S200 array, which features 3,000 nanowells per well and a total of 100,000 nanowells per plate.

The experiment was carried out over several days and involved the following steps:

Day 0:

1. Plate Coating: Coated plates with Vitronectin for iPSC culture.

2. Cell Seeding: Used engineered iPSCs (Wasabi, tdTomato, iRFP670).

3. Plate Scanning: Scanned plate in bright field, 10x magnification.

4. Single Cell Detection: Identified ~1,000 single cells in nanowells.

Day 1:

5. Media Change: Replaced the culture medium in the plate.

6. Plate Scanning: Scanned the plate again at 10x magnification in bright field, Wasabi, tdTomato, and iRFP670 channels to identify modified clones.

Day 3:

7. Plate Scanning: Scanned the plate again at 10x magnification in bright field, Wasabi, tdTomato, and iRFP670 channels to confirm modified clones.

8. Clone Detection and Ranking: Analyzed the scans to detect and rank clones.

9. Clone Selection: Reviewed the results and selected around 80 viable clones to be picked.

10. Cell Detachment Evaluation: Tested detachment conditions (EDTA, Accutase) and incubation times for optimization.

11. Cell Picking: We used the CellCelector™ system to pick the selected single-cell clones and transfer them to a 96-well plate.

Experimental Conclusions:

The iPSC single-cell cloning experiment demonstrated the CellCelector's exceptional capabilities in handling complex workflows and precision in identifying and picking single cells. The use of CellCelector™ Nanowell Arrays further showcased the system's adaptability to various applications, enabling us to identify, rank, and pick single-cell clones efficiently and accurately.

The CellCelector™ system has proven invaluable for our cellular research by simplifying and streamlining the iPSC cloning process.

Experiment 3: Organoid Picking and Transfer with AggreWell Plates

In a third experiment, we explored the capabilities of the CellCelector™ system to handle organoid picking and transfer from AggreWell plates to 96 well plates. AggreWell 800 and AggreWell 400 were used to assess the system's efficiency and accuracy in organoid manipulation.

Key Findings:

• Fast and Easy Automated Image Analysis: The CellCelector™ system provided a quick and straightforward automated image analysis using AggreWell plates, streamlining the organoid picking process.

• Picking from AggreWell 800 with 500 µm Plastic Tip: We used a 500 µm plastic tip to pick organoids from AggreWell 800. Although the outer diameter of the tip was larger than the AggreWell, preventing the tip from reaching the bottom of the well, the picking was still successful. However, neighboring organoids may be disturbed during the process.

  

• Picking from AggreWell 800 and 400 with 220 µm Glass Capillary: We used a 220 µm glass capillary to pick organoids from AggreWell 800 and AggreWell 400. The CellCelector system demonstrated 100% picking and transfer accuracy for small (150μm) to large (310μm) organoids, with only 1 µl of volume required for each pick, alleviating the need for a rinse well.

  

• Fast and Easy Automated Image Analysis and Picking: The CellCelector system provided rapid and straightforward automated image analysis and picking of organoids from the U-bottom plate.

Experimental Conclusions:

The third experiment showcased the CellCelector™ system's ability to efficiently and accurately pick and transfer organoids using Aggrewell and U-Bottom plates. The system's adaptability to different well formats, tip sizes, and picking volumes highlights its potential for a wide range of applications in organoid research. This experiment further underscores the CellCelector™ system as a valuable tool for automating complex cellular workflows and streamlining cell manipulation processes in our lab.

Final Conclusions

Overall, our experience with the CellCelector™ system demonstrated its versatility, accuracy, and efficiency in various cellular research applications, including stem cell colony picking, iPSC single-cell cloning, and organoid picking and transfer. By automating complex workflows and offering precision picking capabilities, the CellCelector™ system holds great promise for enhancing the efficiency and accuracy of cellular research at the Gates Center and labs worldwide.

Epidermolysis Bullosa Research Partnership (EBRP)

The Gates Center's ability to conduct research with the CellCelector™ has been made possible thanks to the support of donors like the Epidermolysis Bullosa Research Partnership (EBRP). Led by Michael Hund, the EBRP is dedicated to finding treatments and cures for Epidermolysis Bullosa (EB), a devastating skin condition that affects visible skin, connective tissue, and internal organs.

The EBRP's innovative approach, Venture Into Cures, functions as a mutual fund for potential EB treatments. They identify and fund the most promising research projects in exchange for a financial interest in the work carried out by universities or businesses. The returns generated from successful projects are reinvested into further EB research, allowing each dollar invested to multiply its impact continuously.

With 95% of rare diseases currently lacking approved treatments, EBRP's model aims to change this reality. EB serves as a perfect case study for its approach, as it needs more funding due to its rarity and low public awareness. As a dermatological disease with visible physical indicators, the effects of treatments can be observed and studied more quickly. The work EBRP has supported has already paved numerous pathways toward a cure. They are at the forefront of not only their unique business model but also innovative gene therapies that hold the potential to help many other diseases find their cures. Donors like the EBRP drive innovation and accelerate the development of life-changing therapies by supporting research efforts at institutions like the Gates Center.

• Zuzalu is an innovative "pop-up city" designed to create an intentional community focused on learning, health, and coordination, supported by key figures like Vitalik Buterin and Gitcoin.

• Gitcoin will showcase the Allo protocol and fund a Public Goods round for participants, pledging $100,000 from its matching pool to support Zuzalu's shared needs and public goods.

• Quadratic funding, a democratic and equitable approach, will be employed to fund public goods, ensuring projects with community support receive the necessary financial backing.

• Zuzalu aims to demonstrate Gitcoin's expertise in community building, grow public goods, foster dApp development, strengthen ties with Ethereum ecosystem innovators, and attract talent to its DAO.

The Ethereum community is buzzing with the innovative concept of Zuzalu, a "pop-up city" designed to create an intentional community focused on learning, health, and coordination. Supported by key figures such as Vitalik Buterin and in collaboration with Gitcoin, Zuzalu aims to become a model for future community-building endeavors.

The Plan for Zuzalu

Zuzalu will offer its participants housing, utilities, and other essential amenities, with the local government's backing and Vitalik Buterin generously contributing to a significant portion of the costs. Gitcoin has also partnered with Zuzalu to help ensure the project's success.

Gitcoin's Role in Zuzalu

As part of its involvement, Gitcoin will showcase the Allo protocol and fund a Public Goods round for event participants. Additionally, Gitcoin will pledge $100,000 from its matching pool to support Zuzalu's shared needs and public goods.

Quadratic Funding: A Fair and Democratic Approach

Quadratic funding (QF) is a groundbreaking method of funding public goods in a democratic and equitable manner. It is designed to help projects receive the support they deserve based on their community's backing.

The QF process involves:

1. Direct funding: People contribute to projects they care about.

2. Matching pool: A separate pool of funds is set aside to boost contributions.

3. Distribution: Projects receive matching funds based on the total amount raised and the number of unique contributors.

4. Broad support: The more unique contributors a project has, the more matching funds it receives, encouraging projects to reach wider audiences.

The magic of QF lies in its formula, which squares the sum of the square roots of each person's contribution to a project. This approach ensures that the allocation of the matching pool is heavily influenced by the number of unique contributors rather than just the amount raised.

Why Gitcoin Supports Zuzalu

By supporting Zuzalu, Gitcoin aims to achieve several objectives, such as:

• Demonstrating its expertise in community building and funding public goods.

• Growing public goods for the benefit of all participants.

• Encouraging dApp development on the Allo protocol and Passport.

• Strengthening ties with Ethereum ecosystem innovators.

• Learning from Zuzalu to help future projects allocate funds effectively.

• Attracting talent to its DAO and the regenerative side of cryptocurrency.

Timeline of Zuzalu

Zuzalu is scheduled to take place from March 25 to May 25, 2023, with Gitcoin's involvement extending throughout the event.

Benefits and Drawbacks of Supporting Zuzalu

Backing Zuzalu offers numerous benefits, such as showcasing Gitcoin's expertise, growing public goods, fostering development, and building relationships within the Ethereum ecosystem. However, there are potential drawbacks to consider, including resource allocation, capital investment, a distraction from other projects, and the challenge of measuring outcomes.

Conclusion

The Zuzalu pop-up city presents a unique opportunity for the Ethereum community, Gitcoin, and the growth of public goods. By working together, we can make a lasting impact on the way communities are built and supported, ultimately benefiting the entire ecosystem.

(This article is a curated chatGPT4 summarization of j9leger's GCP-005 Proposal, which PASSED on 4/10/2023)

Recently stem cells, particularly easily obtained adipose-derived stem cells (ADSCs), have garnered popularity for their role in tissue maintenance and repair. ADSCs are effortlessly isolated following liposuction; lipoaspirate is obtained from clinics and centrifuged to obtain a stromal vascular fraction (SVF) which contains ADSCs, pericytes, hematopoietic progenitors, fibroblasts, endothelial cells, smooth muscle cells, monocytes, macrophages and lymphocytes [4]. Although other techniques could be performed to elute subsets of ADSCs, SVF was often used in whole to conserve time, cost, and labor and to obtain a 361 designation by the FDA. The 361 registration is for homologous-use tissue, which refers to the repair, reconstruction, replacement, or supplementation of a recipient’s cells that perform the same primary function in the recipient as in the donor. These products must be minimally manipulated, not combined with other agents, and collected and delivered in the same surgical setting. 361 contrasts with the 351-drug pathway for cellular or tissue products that do not meet the description of minimal manipulation. These products are typically cultured in a laboratory and processed in a way that alters their original form. Unlike the 361 registration, these products are required by the FDA to apply for an investigational new drug (IND), which can be costly and time-consuming. Unfortunately, companies have been marketing stem cells (SC) and exosome products without approval by the FDA, and a company’s stem cell (SC) product was found to contain no living SCs but did contain Escherichia coli bacteria causing sepsis in more than a dozen patients. After similar issues from various companies, the FDA issued a warning in December 2019, alerting the public to be cautious of any claims because there are no FDA- approved SC or exosome products, even under the 351-drug pathway. While many groups are pursuing cellular-based therapies for skin rejuvenation under 351 INDs, it is believed that many of the positive effects of ADSCs come from paracrine signaling derived from secreted exosomes and not directly from the cells themselves; thus, the use of a synthetically produced, acellular product has the benefit of bypassing current FDA regulations and can be immediately commercialized.

Skin Rejuvenation

Traditional non-excisional skin tightening methods have included topicals containing growth factors and cytokines (TGF-β, PDGF, FGF, IL-1, TNF-α, and retinoids) [5-11], dermal fillers (collagen, hyaluronic acid, hydroxyapatite, and Poly-L-lactic acid) [12-14], absorbable sutures (polydioxanone (PDO) threading) [15, 16], energy-/mechanical-based devices (microdermabrasion, moderate to deep chemical peels, fractional radiofrequency micro-needling, and fractional non-ablative and ablative lasers) [17-20]. While observable success has been achieved via conventional methods, they are not without their limitations. For example, growth factors and cytokines are large hydrophilic molecules with a >15,000 Da molecular weight, and prior studies demonstrate that hydrophilic molecules >500 Da have low penetration past the stratum corneum, questioning the efficacy of topicals [21]. Dermal fillers can create issues when collagen overstimulation leads to fibrosis, creating a stiff feeling, the inability to achieve a natural expression, and chronic swelling at the treatment area years after the initial injection. Benefits from PDO threading decline sharply after 12 weeks [16], and while some devices have proved their value over time, most are no longer currently in use. Minimally invasive subdermal RF treatments are currently the gold standard for significant skin tightening [22]. 

Recently the addition of biologicals (ADSCs, nano fat, and exosomes) to traditional procedures has gained traction with favorable outcomes. Multiple studies performed since 2001 have shown that ADSCs can improve collagen and elastin content in the skin and adipose framework [23]; however, the FDA’s disapproval of ‘more than minimal manipulation’ of autologous tissue led to a ban on the use of SVF techniques for stem cell treatments (http://www.fda.gov/vaccines-blood-biologics/cellular-gene-therapy-products/framework-regulation-regenerative-medicine-products). This has led to increased interest in the use of extracellular vesicles (EVs), cell-derived, membranous structures released by nearly all human cells. Exosomes are 20-200nm acellular bilamellar EVs that contain miRNA, mRNA, and peptides which play essential roles in biological signaling, including skin homeostasis. The production of exosomes in a laboratory involves the use of conditioned media (CM) from cellular cultures, usually mesenchymal stem cells (MSCs). Exosomes have been shown to play a significant role in paracrine signaling, and their downstream purpose can vary significantly based on the composition of the cargo provided by the parent cell [24, 25]. It has been noted that paracrine signaling can generate up to 91% of the effects of injected stem cells [26] and thus is viewed as a promising new, “cell-free” therapy, safe from the undesired complications of traditional stem cell therapy such as tumorigenicity and immune rejection [27]. 

Microneedling is a procedure that punctures the skin at a controlled depth, causing an intrinsic wound-healing cascade promoting collagen formation and neovascularization. Migration and proliferation of fibroblasts also occur, resulting in the formation of intercellular matrix and deposition of collagen. Skin tightening and collagen formation continue for 5 to 7 years post-procedure [28]. The addition of platelet-rich plasma (PRP), growth factors, and conditioned media is being explored to decrease recovery time by downregulating inflammation and increasing textural improvement by continuing stimulation of collagen synthesis initiated by micro-needling. While the FDA has advised that micro-needling plus biological agents should be regulated as a drug, the agency is not enforcing the ruling at this time (https://www.fda.gov/regulatory-information/search-fda-guidance-documents/regulatory-considerations-microneedling-devices). Many groups have had significant success with controlled trials where RF micro-needling or CO2 laser resurfacing is performed with half the face receiving topical treatment with ultra-pure water, saline or other control and the other half receiving topical treatments of recombinant growth factors, exosomes (conditioned media) or PRP [29-37]. While the topical treatment with these mediums has produced varying degrees of success, the composition of PRP is still being determined, the size of growth factors can be prohibitive, and the use of CM leaves ambiguity for FDA intervention.

This leaves the field open for topical treatment of a synthetically produced, acellular product following microneedling or laser resurfacing. With the large-scale safety dataset of mRNA administration provided through the worldwide vaccination of Pfizer’s and Moderna’s mRNA vaccine, the application of topical mRNA should not warrant oversight by the FDA. The most significant hurdle is stabilizing the messenger RNA to be provided as a topical treatment. To this end, great strides are being explored to stabilize RNA for potential future vaccines (brand new paper).

Androgenic Alopecia

If this sounds interesting, we can further develop the story for the rejuvenation of dermal papillae with microneedling and topical treatment of mRNA.

1. Makrantonaki, E. and C.C. Zouboulis, Molecular mechanisms of skin aging: state of the art. Ann N Y Acad Sci, 2007. 1119: p. 40-50.

2. Mukherjee, P.K., et al., Bioactive compounds from natural resources against skin aging. Phytomedicine, 2011. 19(1): p. 64-73.

3. Gentile, P. and S. Garcovich, Advances in Regenerative Stem Cell Therapy in Androgenic Alopecia and Hair Loss: Wnt pathway, Growth-Factor, and Mesenchymal Stem Cell Signaling Impact Analysis on Cell Growth and Hair Follicle Development. Cells, 2019. 8(5).

4. Gimble, J.M., A.J. Katz, and BA. Bunnell, Adipose-derived stem cells for regenerative medicine. Circ Res, 2007. 100(9): p. 1249-60.

5. Ehrlich, M., et al., Improvement in the appearance of wrinkles with topical transforming growth factor beta(1) and l-ascorbic acid. Dermatol Surg, 2006. 32(5): p. 618-25.

6. Fitzpatrick, R.E. and E.F. Rostan, Reversal of photodamage with topical growth factors: a pilot study. J Cosmet Laser Ther, 2003. 5(1): p. 25-34.

7. Gold, MH, M.P. Goldman, and J. Biron, Efficacy of novel skin cream containing mixture of human growth factors and cytokines for skin rejuvenation. J Drugs Dermatol, 2007. 6(2): p. 197-201.

8. Griffiths, C.E., et al., Restoration of collagen formation in photodamaged human skin by tretinoin (retinoic acid). N Engl J Med, 1993. 329(8): p. 530-5.

9. Lupo, M.L., J.L. Cohen, and M.I. Rendon, Novel eye cream containing a mixture of human growth factors and cytokines for periorbital skin rejuvenation. J Drugs Dermatol, 2007. 6(7): p. 725-9.

10. Metcalf, S., et al., Imiquimod as an antiaging agent. J Am Acad Dermatol, 2007. 56(3): p. 422-5.

11. Weinstein, G.D., et al., Topical tretinoin for treatment of photodamaged skin. A multicenter study. Arch Dermatol, 1991. 127(5): p. 659-65.

12. Courderot-Masuyer, C., et al., Evaluation of lifting and antiwrinkle effects of calcium hydroxylapatite filler. In vitro quantification of contractile forces of human wrinkle and normal aged fibroblasts treated with calcium hydroxylapatite. J Cosmet Dermatol, 2016. 15(3): p. 260-8.

13. Fan, Y., et al., Hyaluronic acid-cross-linked filler stimulates collagen type 1 and elastic fiber synthesis in skin through the TGF-beta/Smad signaling pathway in a nude mouse model. J Plast Reconstr Aesthet Surg, 2019. 72(8): p. 1355-1362.

14. Quan, T., et al., Enhancing structural support of the dermal microenvironment activates fibroblasts, endothelial cells, and keratinocytes in aged human skin in vivo. J Invest Dermatol, 2013. 133(3): p. 658-667.

15. Shin, J.J., et al., Comparative effects of various absorbable threads in a rat model. J Cosmet Laser Ther, 2019. 21(3): p. 158-162.

16. Yoon, J.H., et al., Tissue changes over time after polydioxanone thread insertion: An animal study with pigs. J Cosmet Dermatol, 2019. 18(3): p. 885-891.

17. Merati, M., et al., An Assessment of Microneedling with Topical Growth Factors for Facial Skin Rejuvenation: A Randomized Controlled Trial. J Clin Aesthet Dermatol, 2020. 13(11): p. 22-27.

18. Min, S., et al., Fractional Microneedling Radiofrequency Treatment for Acne-related Post-inflammatory Erythema. Acta Derm Venereol, 2016. 96(1): p. 87-91.

19. Pamela, R.D., Topical Growth Factors for the Treatment of Facial Photoaging: A Clinical Experience of Eight Cases. J Clin Aesthet Dermatol, 2018. 11(12): p. 28-29.

20. Rosenberg, G.J., et al., Long-term histologic effects of the CO2 laser. Plast Reconstr Surg, 1999. 104(7): p. 2239-44; discussion 2245-6.

21. Bos, J.D. and M.M. Meinardi, The 500 Dalton rule for the skin penetration of chemical compounds and drugs. Exp Dermatol, 2000. 9(3): p. 165-9.

22. Theodorou, S.J., R.J. Paresi, and C.T. Chia, Radiofrequency-assisted liposuction device for body contouring: 97 patients under local anesthesia. Aesthetic Plast Surg, 2012. 36(4): p. 767-79.

23. Zuk, P.A., et al., Multilineage cells from human adipose tissue: implications for cell-based therapies. Tissue Eng, 2001. 7(2): p. 211-28.

24. Ferreira, A.D.F. and D.A. Gomes, Stem Cell Extracellular Vesicles in Skin Repair. Bioengineering (Basel), 2018. 6(1).

25. McBride, J.D., L. Rodriguez-Menocal, and E.V. Badiavas, Extracellular Vesicles as Biomarkers and Therapeutics in Dermatology: A Focus on Exosomes. J Invest Dermatol, 2017. 137(8): p. 1622-1629.

26. van Balkom, B.W., et al., Endothelial cells require miR-214 to secrete exosomes that suppress senescence and induce angiogenesis in human and mouse endothelial cells. Blood, 2013. 121(19): p. 3997-4006, S1-15.

27. Ha, DH, et al., Mesenchymal Stem/Stromal Cell-Derived Exosomes for Immunomodulatory Therapeutics and Skin Regeneration. Cells, 2020. 9(5).

28. Singh, A. and S. Yadav, Microneedling: Advances and widening horizons. Indian Dermatol Online J, 2016. 7(4): p. 244-54.

29. Samizadeh, S. and L. Belhaouari, Effectiveness of growth factor-induced therapy for skin rejuvenation: A case series. J Cosmet Dermatol, 2021. 20(6): p. 1867-1874.

30. El-Domyati, M., et al., Facial rejuvenation using stem cell conditioned media combined with skin needling: A split-face comparative study. J Cosmet Dermatol, 2020. 19(9): p. 2404-2410.

31. Prakoeswa, C.R.S., et al., The effects of amniotic membrane stem cell-conditioned medium on photoaging. J Dermatolog Treat, 2019. 30(5): p. 478-482.

32. Wang, X., et al., Efficacy of protein extracts from medium of Adipose-derived stem cells via microneedles on Asian skin. J Cosmet Laser Ther, 2018. 20(4): p. 237-244.

33. Zhou, B.R., et al., The efficacy of conditioned media of adipose-derived stem cells combined with ablative carbon dioxide fractional resurfacing for atrophic acne scars and skin rejuvenation. J Cosmet Laser Ther, 2016. 18(3): p. 138-48.

34. Amirkhani, M.A., et al., Rejuvenation of facial skin and improvement in the dermal architecture by transplantation of autologous stromal vascular fraction: a clinical study. Bioimpacts, 2016. 6(3): p. 149-154.

35. Lee, H.J., et al., Efficacy of micro-needling plus human stem cell conditioned medium for skin rejuvenation: a randomized, controlled, blinded split-face study. Ann Dermatol, 2014. 26(5): p. 584-91.

36. Fabi, S. and H. Sundaram, The potential of topical and injectable growth factors and cytokines for skin rejuvenation. Facial Plast Surg, 2014. 30(2): p. 157-71.

37. Seo, K.Y., et al., Skin rejuvenation by microneedle fractional radiofrequency and a human stem cell conditioned medium in Asian skin: a randomized controlled investigator blinded split-face study. J Cosmet Laser Ther, 2013. 15(1): p. 25-33.