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TL;DR
This preclinical study used inducible gene deletion in mice to show that autophagy is required cell-intrinsically for hematopoietic stem cell survival.
Autophagy · 9 authors, 4 centres
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This preclinical study used inducible gene deletion in mice to show that autophagy is required cell-intrinsically for hematopoietic stem cell survival.
The study investigated why autophagy is essential for adult hematopoietic stem cell (HSC) maintenance using inducible deletion of autophagy genes (atg5, atg7, atg16l1) and chimeric mouse models. Mechanistic analysis revealed that autophagy-deficient HSCs exhibit higher expression of amino acid transporters, leading to increased amino acid uptake. The HSC loss was demonstrated to be cell-intrinsic. The study provides insights into how autophagy regulates cellular anabolism in stem cells and suggests MTOR inhibition as a potential strategy to improve aged stem cell function or transplant outcomes.