Mild dyslipidemia accelerates tumorigenesis through expansion of Ly6Chi monocytes and differentiation to pro-angiogenic myeloid cells - Inserm - Institut national de la santé et de la recherche médicale Access content directly
Journal Articles Nature Communications Year : 2022

Mild dyslipidemia accelerates tumorigenesis through expansion of Ly6Chi monocytes and differentiation to pro-angiogenic myeloid cells

Thi Tran
Marc Diedisheim
Olivia Lenoir
Alain Tedgui

Abstract

Abstract Cancer and cardiovascular disease (CVD) share common risk factors such as dyslipidemia, obesity and inflammation. However, the role of pro-atherogenic environment and its associated low-grade inflammation in tumor progression remains underexplored. Here we show that feeding C57BL/6J mice with a non-obesogenic high fat high cholesterol diet (HFHCD) for two weeks to induce mild dyslipidemia, increases the pool of circulating Ly6C hi monocytes available for initial melanoma development, in an IL-1β-dependent manner. Descendants of circulating myeloid cells, which accumulate in the tumor microenvironment of mice under HFHCD, heighten pro-angiogenic and immunosuppressive activities locally. Limiting myeloid cell accumulation or targeting VEGF-A production by myeloid cells decrease HFHCD-induced tumor growth acceleration. Reverting the HFHCD to a chow diet at the time of tumor implantation protects against tumor growth. Together, these data shed light on cross-disease communication between cardiovascular pathologies and cancer.
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Origin : Publication funded by an institution

Dates and versions

inserm-03788301 , version 1 (26-09-2022)

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Cite

Thi Tran, Jean-Remi Lavillegrand, Cedric Lereverend, Bruno Esposito, Lucille Cartier, et al.. Mild dyslipidemia accelerates tumorigenesis through expansion of Ly6Chi monocytes and differentiation to pro-angiogenic myeloid cells. Nature Communications, 2022, 13 (1), pp.5399. ⟨10.1038/s41467-022-33034-0⟩. ⟨inserm-03788301⟩
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