Abstract
Eosinophils and their associated cytokines IL-4 and IL-5 are emerging as central orchestrators of the immune-metabolic axis. Herein, we demonstrate that cross-talk between the Ig-superfamily receptor CD300f and IL-5 is a key checkpoint that modifies the ability of eosinophils to regulate metabolic outcomes. Generation of Il5 Tg /Cd300f -/- mice revealed marked and distinct increases in eosinophil levels and their production of IL-4 in the white and brown adipose tissues. Consequently, Il5 Tg /Cd300f -/- mice had increased alternatively activated macrophage accumulation in the adipose tissue. Cd300f -/- mice displayed age-related accumulation of eosinophils and macrophages in the adipose tissue and decreased adipose tissue weight, which was associated with decreased diet-induced weight gain and insulin resistance. Notably, Il5 Tg /CD300f -/- were protected from diet-induced weight gain and glucose intolerance. These findings highlight the cross-talk between IL-5 receptor and CD300f as a novel pathway regulating adipose tissue eosinophils and offer new entry points for therapeutic intervention for obesity and its complications.
Original language | English |
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Article number | 5922 |
Journal | Scientific Reports |
Volume | 7 |
Issue number | 1 |
DOIs | |
State | Published - 1 Dec 2017 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2017 The Author(s).
Funding
AM and MER are supported by the US-Israel Bi-national Science Foundation (grant no. 2011244), MER by NIH R37 A1045898;
Funders | Funder number |
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US-Israel bi-national Science Foundation | 2011244 |
National Institutes of Health | R37 A1045898 |
National Institute of Allergy and Infectious Diseases | R37AI045898 |
National Institute of Diabetes and Digestive and Kidney Diseases | P30DK078392 |