Eosinophils sustain adipose alternatively activated macrophages associated with glucose homeostasis.

Eosinophils sustain adipose alternatively activated macrophages associated with glucose homeostasis.
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DOI:
10.1126/science.1201475
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发表时间:
2011-04-08
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Locksley RM
Locksley RM
中科院分区:
其他
文献类型:
--
作者:
Wu D;Molofsky AB;Liang HE;Ricardo-Gonzalez RR;Jouihan HA;Bando JK;Chawla A;Locksley RM

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Eosinophils are associated with helminth immunity and allergy, often in conjunction with alternatively activated macrophages (AAMs). Adipose tissue AAMs are necessary to maintain glucose homeostasis and are induced by the cytokine interleukin-4 (IL-4). Here, we show that eosinophils are the major IL-4-expressing cells in white adipose tissues of mice, and, in their absence, AAMs are greatly attenuated. Eosinophils migrate into adipose by an integrin-dependent process and reconstitute AAMs through an IL-4/IL-13-dependent process. Mice on high-fat diet develop increased body fat, impaired glucose tolerance and insulin resistance in the absence of eosinophils, and helminth-induced adipose eosinophilia enhances glucose tolerance. Our results suggest that eosinophils play an unexpected role in metabolic homeostasis through maintenance of adipose AAMs.
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