ArticleScientific reports2022
Dynamic biological characteristics of human bone marrow hematopoietic stem cell senescence.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 3 citations in OpenAlex.
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Authors and funding
7 authors at 1 institution in 1 country.
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Abstract
Hematopoietic stem cells show biological manifestations of aging, diminished hematopoietic function and abnormal differentiation, which can lead to leukemia. It is therefore important to explore the mechanism underlying hematopoietic stem cell aging to develop strategies for delaying the process. Our evaluations revealed that the number of bone marrow hematopoietic cells (BMHCs) started to decrease significantly after 45 years of age, and the number of senescent BMHCs, as determined by senescence-associated beta-galactosidase staining, gradually increased with age. In addition, BMHCs from individuals over 45 years of age presented with notably reduced proliferative capacity, increased G1-phase cell cycle arrest, and significantly decreased generation of mixed colony forming units, which suggests that BMHCs enter senescence during middle age. Furthermore, we observed significantly lower antioxidant capacity and a significant increase in oxidative damage products, a gradual increase in the expression of senescence-associated proteins and genes, and a gradual decrease in the expression of cell cycle related proteins in BMHCs after middle age. Taken together, these findings offer both a theoretical and experimental basis for better understanding of the senescence progression of BMHCs and the optimal timing for anti-senescence drug interventions in clinical practice.
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