Abstract |
Body weight regain often causes failure of obesity therapies while the underlying mechanism remains largely unknown. In this study, we report that immune cells, especially CD4+ T cells, mediate the 'memory' of previous obese status. In a weight gain-loss-regain model, we found that C57BL/6J mice with an obesity history showed a much faster rate of body weight regain. This obesity memory could last for at least 2 months after previously obese mice were kept at the same body weight as non-obese mice. Surprisingly, such obesity memory was abrogated by dexamethasone treatment, whereas immunodeficient Rag1-/- and H2A-/- mice failed to establish such memory. Rag1-/- mice repossessed the obesity memory when immune cells or CD4+ T cells isolated from previously obese mice were transferred. Furthermore, depletion of CD4+ T cells led to obesity memory ablation. Taken together, we conclude that CD4+ T cells mediate obesity memory and promote weight regain.
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Authors | Jianghuan Zou, Beibei Lai, Mingzhu Zheng, Qin Chen, Shujun Jiang, Anying Song, Zan Huang, Peiliang Shi, Xin Tu, Di Wang, Linrong Lu, Zhaoyu Lin, Xiang Gao |
Journal | Cellular & molecular immunology
(Cell Mol Immunol)
Vol. 15
Issue 6
Pg. 630-639
(Jun 2018)
ISSN: 2042-0226 [Electronic] China |
PMID | 28626237
(Publication Type: Journal Article)
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Topics |
- Animals
- Basal Metabolism
- CD4-Positive T-Lymphocytes
(immunology)
- Hyperphagia
(complications)
- Immunologic Memory
- Mice, Inbred C57BL
- Obesity
(immunology)
- Thermogenesis
- Weight Gain
(immunology)
- Weight Loss
(immunology)
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