Aging of the Hematopoietic System: Mechanisms, Consequences, and Systemic Interactions.
Abstract
The aging of the hematopoietic system is central to physiological aging, with profound consequences for immune competence, tissue regeneration, and systemic health. Age-related changes manifest as altered blood cell composition, functional decline in hematopoietic stem cells (HSCs), and deterioration of the bone marrow niche. Beyond hematologic dysfunction, hematopoietic aging acts as a systemic amplifier of age-related diseases through clonal hematopoiesis and inflammatory remodeling. This review integrates recent insights into the mechanisms and systemic impacts of hematopoietic aging, reframing it as a modifiable axis of systemic aging. We highlight emerging rejuvenation strategies-senolytics, metabolic reprogramming, and microbiota-targeted therapies-that aim to restore hematopoietic and immune function, offering promising avenues to improve healthspan and reduce age-related multimorbidity.
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Research summary
The paper claims that aging of the hematopoietic system can be modulated to improve healthspan and reduce age-related multimorbidity. This research is relevant as it addresses the underlying mechanisms of aging and explores potential interventions to enhance longevity and systemic health.
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