Scientists Reverse Aging in Blood Stem Cells by Repairing Lysosomes
Similar Articles
New Drugs Target 'Zombie' Cells to Combat Cancer and Aging
Lab-Grown Insulin-Producing Cells Restore Blood Sugar Control in Diabetic Mice
Gut Exosome Transfer Shows Bidirectional Aging Effects in Animal Study
Mayo Clinic Researchers Develop New Method to Tag Aging 'Zombie' Cells
Restored Youthful Gut Microbiome Suppresses Liver Cancer in Aging Mice
Researchers at Mount Sinai have successfully reversed aging in blood-forming stem cells in mice by correcting defects in lysosomes, the cellular recycling centers. The treatment restored the stem cells' regenerative ability, balanced blood cell production, and reduced inflammation. This discovery could open new avenues for treating age-related blood disorders.
Facts First
- Aged blood stem cells were rejuvenated by blocking excessive lysosomal activity.
- The treatment improved regenerative capacity by more than eightfold in living animals.
- Restored cells produced balanced blood and immune cells and generated additional healthy stem cells.
- The research focused on hematopoietic stem cells (HSCs) linked to age-related blood cancers.
- The findings were published in the journal Cell Stem Cell.
What Happened
Scientists at the Icahn School of Medicine at Mount Sinai reversed aging in hematopoietic stem cells (HSCs) in mice by repairing their lysosomes. Lysosomes are internal recycling centers critical for cellular metabolism. The team discovered that lysosomes in aged HSCs become excessively acidic, damaged, depleted, and abnormally active. Using a vacuolar ATPase inhibitor to block this excessive activity, they restored lysosomal health. The treated old stem cells regained the ability to regenerate, produce balanced blood and immune cells, and generate additional healthy stem cells. An ex vivo treatment increased the cells' blood-forming ability in living animals by more than eightfold.
Why this Matters to You
Aging HSCs are linked to a premalignant condition that increases the risk of blood cancers and inflammatory diseases. This research may point toward future therapies that could reduce these age-related risks. If similar approaches prove safe and effective for humans, they could potentially help maintain a healthier blood and immune system as you age, reducing susceptibility to certain cancers and chronic inflammation.
What's Next
The research team is investigating if lysosomal dysfunction in aging stem cells contributes to the development of leukemic stem cells. Further studies will be needed to determine if this treatment approach can be safely translated to human medicine.