Red blood cell endothelial nitric oxide synthase: A major player in regulating cardiovascular health

Red blood cells (RBCs) have traditionally been seen as simple carriers of gases and nutrients in the body. One important non‐canonical function of RBCs in the cardiovascular system is the regulation of nitric oxide (NO) metabolism. It has been shown that RBCs can scavenge NO, transport NO metabolite...

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Published in:British journal of pharmacology 2023-09
Main Authors: LoBue, Anthea, Heuser, Sophia K., Lindemann, Marla, Li, Junjie, Rahman, Masudur, Kelm, Malte, Stegbauer, Johannes, Cortese‐Krott, Miriam M.
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container_title British journal of pharmacology
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creator LoBue, Anthea
Heuser, Sophia K.
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Li, Junjie
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Stegbauer, Johannes
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description Red blood cells (RBCs) have traditionally been seen as simple carriers of gases and nutrients in the body. One important non‐canonical function of RBCs in the cardiovascular system is the regulation of nitric oxide (NO) metabolism. It has been shown that RBCs can scavenge NO, transport NO metabolites and produce NO in hypoxic conditions, thereby inducing hypoxic vasodilation. RBCs also express endothelial nitric oxide synthase (eNOS). However, the physiological significance of RBC eNOS has been controversial for many years. This review article provides a comprehensive overview of the experimental research on RBC eNOS signalling in vivo. The data show that RBC eNOS signalling modulates intracellular NO production and NO–haem levels, as well as participating in extracellular paracrine NO metabolite signalling, which contributes to regulating peripheral vascular resistance, blood pressure and cardioprotection. Additionally, this article explores the molecular mechanisms of sytemic regulation mediated by RBC eNOS and the implications of RBC eNOS in cardiovascular health and disease.
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title Red blood cell endothelial nitric oxide synthase: A major player in regulating cardiovascular health
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