Bonn team rejuvenates 80-year-old blood cells into young stem cells

· Science · Germany

Researchers from the University Hospital of Bonn and the University of Bonn have dramatically rejuvenated human cells in a test tube. They directly reprogrammed red blood cell precursors into stem cells capable of differentiating into neurons. The molecular clocks indicating cellular age were reset during the process, so cells from an 80-year-old donor carried a molecular age under 20. The finding suggests cellular aging may not be an irreversible process and could open paths toward regenerative medicine and research on age-related disease. It is preclinical work done in vitro, so therapeutic use in patients remains distant, and questions about the stability and safety of the reprogrammed cells would need to be addressed before any clinical application.

Why it matters：If cellular age can be reset in human cells, it reopens fundamental questions about aging and boosts the regenerative medicine field, though years of safety work lie ahead.

Key points

  • Red blood cell precursors were directly reprogrammed into stem cells that can become neurons.
  • Cells came from an 80-year-old donor but showed a molecular age under 20.
  • The work was conducted in vitro by researchers at the University Hospital of Bonn and University of Bonn.

Sources (original reporting)

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