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    Chemokines are members of a large family of chemotactic cytokines that signal through their receptors to mediate leukocyte recruitment during inflammation and homeostasis. The chemokine receptor CXCR2 has largely been associated with neutrophil recruitment. However, there is emerging evidence of roles for chemokines and their receptors in processes other than leukocyte migration. We have previously demonstrated that CXCR2 knockout (KO) mice have thinner skin compared to wild-type mice. Herein we demonstrate that this is due to a thinner subcutaneous adipose layer, as a result of fewer and smaller individual adipocytes. We observe a similar phenotype in other fat depots and present data that suggests this may be due to reduced expression of adipogenesis related genes associated with adipocyte specific CXCR2 signaling. Interestingly, this phenotype is evident in female, but not male, CXCR2 KO mice. These findings expand our understanding of nonleukocyte related chemokine receptor functions and help to explain some previously observed adipose-related phenotypes in CXCR2 KO mice. ©2018 The Authors. Society for Leukocyte Biology Published by Wiley Periodicals, Inc.


    Douglas P Dyer, Joan Boix Nebot, Christopher J Kelly, Laura Medina-Ruiz, Fabian Schuette, Gerard J Graham. The chemokine receptor CXCR2 contributes to murine adipocyte development. Journal of leukocyte biology. 2019 Mar;105(3):497-506

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    PMID: 30517976

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