A teenager’s first transplant failed. His second donor had died before the search began. Ossium Health had already turned that donor’s marrow into something medicine rarely has: time.
PranaX is a Houston-based regenerative medicine biotechnology company developing stem cell-derived exosome products to counter aging, inflammation, and tissue damage. Built on exosome technology exclusively licensed from The University of Texas MD Anderson Cancer Center, PranaX operates an FDA-registered cGMP facility at the Levit Green life science campus and is bringing to market a physician-directed exosome wellness supplement (ExoWELL) and a personal exosome banking service (ExoSTORE). The company closed an oversubscribed $17M Series A in early 2026.
HexemBio is a New York- and Berkeley-based biotech building what it calls the first blood stem cell rejuvenation therapy. Its Synthetic Human Yolk Sac platform recreates the embryonic environment where blood stem cells first arise, temporarily placing a patient's own aged hematopoietic stem cells into that synthetic young niche before returning them by IV infusion - rather than gene-editing or chemically reprogramming the cells. The company launched publicly in April 2026 with a $10.4M seed round led by Draper Associates, holds an FDA Orphan Drug Designation for a bone-marrow-transplant program in blood cancers, and is targeting first-in-human trials in 2027.