1. Increased stem cell proliferation in atherosclerosis accelerates clonal hematopoiesis.
- Author
-
Heyde A, Rohde D, McAlpine CS, Zhang S, Hoyer FF, Gerold JM, Cheek D, Iwamoto Y, Schloss MJ, Vandoorne K, Iborra-Egea O, Muñoz-Guijosa C, Bayes-Genis A, Reiter JG, Craig M, Swirski FK, Nahrendorf M, Nowak MA, and Naxerova K
- Subjects
- Aging pathology, Animals, Apolipoproteins E genetics, Atherosclerosis genetics, Bone Marrow metabolism, Cell Proliferation, Clonal Evolution, Disease Models, Animal, Female, Humans, Mice, Mice, Inbred C57BL, Models, Biological, Sleep Deprivation pathology, Atherosclerosis pathology, Clonal Hematopoiesis, Hematopoietic Stem Cells pathology
- Abstract
Clonal hematopoiesis, a condition in which individual hematopoietic stem cell clones generate a disproportionate fraction of blood leukocytes, correlates with higher risk for cardiovascular disease. The mechanisms behind this association are incompletely understood. Here, we show that hematopoietic stem cell division rates are increased in mice and humans with atherosclerosis. Mathematical analysis demonstrates that increased stem cell proliferation expedites somatic evolution and expansion of clones with driver mutations. The experimentally determined division rate elevation in atherosclerosis patients is sufficient to produce a 3.5-fold increased risk of clonal hematopoiesis by age 70. We confirm the accuracy of our theoretical framework in mouse models of atherosclerosis and sleep fragmentation by showing that expansion of competitively transplanted Tet2
-/- cells is accelerated under conditions of chronically elevated hematopoietic activity. Hence, increased hematopoietic stem cell proliferation is an important factor contributing to the association between cardiovascular disease and clonal hematopoiesis., Competing Interests: Declaration of interests The authors declare no competing interests., (Copyright © 2021 Elsevier Inc. All rights reserved.)- Published
- 2021
- Full Text
- View/download PDF