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Interleukin-22 Induces the Infiltration of Visceral Fat Tissue by a Discrete Subset of Duffy Antigen Receptor for Chemokine-Positive M2-Like Macrophages in Response to a High Fat Diet

Other Titles
 Interleukin-22 Induces the Infiltration of Visceral Fat Tissue by a Discrete Subset of Duffy Antigen Receptor for Chemokine-Positive M2-Like Macrophages in Response to a High Fat Diet. 
Authors
 Eun-Young Kim  ;  Hye Mi Noh  ;  Bongkun Choi  ;  Ji-Eun Park  ;  Ji-Eun Kim  ;  Youngsaeng Jang  ;  Hyung Keun Lee  ;  Eun-Ju Chang 
Citation
 CELLS, Vol.8(12) : E1587, 2019 
Journal Title
 CELLS 
ISSN
 2073-4409 
Issue Date
2019
Keywords
Duffy antigen receptor for chemokines (DARC) ; adipose tissue ; inflammation ; interleukin 22 ; monocyte-derived macrophages
Abstract
Interleukin-22 (IL-22) is a cytokine with important functions in host defense and inflammatory responses and has recently been suggested to play a role in immune-inflammatory system in the context of obesity and its metabolic consequences. The specific cellular targets and mechanisms of IL-22-mediated obesity are largely unknown however. We here identified a previously unknown subset of monocyte-derived Duffy antigen receptors for chemokines (DARC)+ macrophages in epididymal fat adipose tissue and found that they are preferentially recruited into the crown-like structures of adipose tissue in the mouse upon high fat diet-induced obesity. Importantly, DARC+ macrophages highly express the IL-22 receptor (IL-22Ra1). Exposure to recombinant IL-22 shifts macrophages to an alternative M2 polarization pathway and augments DARC expression via a STAT5b signaling axis. STAT5b directly binds to the DARC promoter and a STAT5 inhibitor abrogates the IL-22-mediated induction of DARC. These M2-like DARC+ subpopulations of monocytes/macrophages were elevated in obese db/db mice compared to WT lean mice. Furthermore, subsets of CD14+ and/or CD16+ monocytes/macrophages within human peripheral blood mononuclear cell populations express DARC and the prevalence of these subsets is enhanced by IL-22 stimuli. This suggested that IL-22 is a critical cytokine that promotes the infiltration of adipose tissue macrophages, that regulate inflammatory processes. Taken together, our present findings provide important insights into the molecular mechanism by which IL-22 signal modulates DARC expression in M2-like macrophages.
Files in This Item:
T201905768.pdf Download
DOI
10.3390/cells8121587
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Lee, Hyung Keun(이형근) ORCID logo https://orcid.org/0000-0002-1123-2136
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/175174
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