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The chemokine receptor CXCR2 contributes to murine adipocyte development
Author(s) -
Dyer Douglas P.,
Nebot Joan Boix,
Kelly Christopher J.,
MedinaRuiz Laura,
Schuette Fabian,
Graham Gerard J
Publication year - 2019
Publication title -
journal of leukocyte biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.819
H-Index - 191
eISSN - 1938-3673
pISSN - 0741-5400
DOI - 10.1002/jlb.1a0618-216rr
Subject(s) - cxc chemokine receptors , biology , adipogenesis , chemokine receptor , chemokine , adipocyte , adipose tissue , microbiology and biotechnology , phenotype , receptor , chemotaxis , ccr1 , c c chemokine receptor type 6 , immunology , inflammation , medicine , endocrinology , gene , genetics
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.