Hematopoietic stem and progenitor cell mitochondrial respiration (HSPC mitochondrial respiration)

Hematopoietic stem and progenitor cell (HSPC) mitochondrial content and respiration represent the metabolic state and organelle density within the bone marrow's blood-forming cells. In their steady state, long-term HSPCs maintain a state of quiescence characterized by low mitochondrial mass and a reliance on anaerobic glycolysis to protect the genome from reactive oxygen species (ROS) (Suda et al., 2011). The transition from quiescence to proliferation and lineage commitment requires a metabolic switch to oxidative phosphorylation (OXPHOS), involving increased mitochondrial biogenesis and oxygen consumption (Vannini et al., 2016). Dysregulation of this metabolic balance is linked to hematopoietic aging, bone marrow failure, and the development of myeloid malignancies like acute myeloid leukemia (AML), where leukemic stem cells may become uniquely dependent on OXPHOS (Lagadinou et al., 2013). Pharmacological interventions targeting this system include NAD+ precursors to improve mitochondrial proteostasis or small molecules that inhibit the electron transport chain to selectively eliminate malignant clones (Mohrin et al., 2015). Consequently, monitoring mitochondrial parameters serves as a critical window into the health and regenerative potential of the hematopoietic system.

Other names

HSPC mitochondrial contentHSPC oxidative phosphorylationHSPC OXPHOSMitochondrial metabolism in hematopoietic stem cellsHSPC mitochondrial biogenesis

Modulation of mitochondrial biogenesis, electron transport chain activity, or mitophagy to maintain stem cell health or induce differentiation.