Rion found that culturing stem cells in a lab to force division leads to rapid DNA damage, as cells are not designed for this artificial environment. This damage created inconsistent exosome products, making large-scale, uniform manufacturing from stem cells unfeasible and prompting a search for a more stable source.

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Nobel Prize-winning research identified genes (Yamanaka factors) that revert specialized adult cells back into their embryonic, stem-cell state. This discovery proves cellular differentiation and aging are not irreversible, opening the door for regenerative therapies by "rebooting" cells to an earlier state.

Rion strategically chose diabetic foot ulcers as its lead indication to de-risk its new therapeutic class. This "outside-in" approach allows the company to build a substantial safety record and gain regulatory and clinical acceptance with a topical product before advancing to more complex systemic applications.

Unlike a drug that can be synthesized to a chemical standard, most vaccines are living biological products. This means the entire manufacturing process must be perfectly managed and cannot be altered without re-validation. This biological complexity makes production far more difficult and expensive than typical pharmaceuticals.

Rion avoids disrupting the medical platelet supply by sourcing near-expiration units from blood banks. This provides an abundant, low-cost raw material. In return, blood banks gain a revenue stream for products that would be discarded, encouraging them to maintain larger inventories for transfusions, creating a win-win.

Unlike most biotechs that start with researchers, CRISPR prioritized hiring manufacturing and process development experts early. This 'backwards' approach was crucial for solving the challenge of scaling cell editing from lab to GMP, which they identified as a primary risk.

Unlike many cell therapies, Rion's platelet-derived exosomes are devoid of the self/non-self surface markers that trigger immune rejection. This "immune privilege" is a critical biological advantage, allowing the product to be used as a universal, off-the-shelf therapy for any patient without needing donor matching.

Rion's research, initially focused on stem cells, revealed their regenerative properties were not intrinsic. Instead, the cells were recycling platelet content from their culture medium, and these recycled components were the true source of the therapeutic effect. This finding prompted a strategic pivot away from stem cells.

Venture capital for US seed and Series A cell and gene therapy companies has collapsed from a historical high of 17-21% of deals to only 7% this year. The sharp decline is driven by a confluence of factors including patient deaths, persistent manufacturing challenges, and growing regulatory uncertainty.

FCDI launched multiple clinical-stage companies (Century, Opsis, Kenai) by providing a proven iPSC technology backbone. This "platform and spinout" model allows new ventures to focus on clinical development rather than early platform discovery, increasing their chances of success and attracting partners.

Sirtuins are enzymes that regulate gene expression, essentially telling a cell what to be. As DNA damage accumulates with age, they increasingly leave their primary posts to act as a repair crew. This distraction causes the cell to lose its identity and function, creating a direct mechanism for aging.

Forcing Stem Cell Division Ex-Vivo Causes DNA Damage, Yielding Inconsistent Products | RiffOn