1. Chemerin as an Inducer of β Cell Proliferation Mediates Mitochondrial Homeostasis and Promotes β Cell Mass Expansion.
- Author
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Li, Min, Zhang, Ruifan, Ge, Qian, Yue, Lingzhi, Ma, Dan, Khattab, Firas, Xie, Wenhua, Cui, Yewei, Gilon, Patrick, Zhao, Xueya, Li, Xi, and Cheng, Rui
- Subjects
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CHEMERIN , *CELL proliferation , *HOMEOSTASIS , *TYPE 2 diabetes , *INSULIN synthesis , *CELL populations - Abstract
Loss of the β cell population is a crucial feature of type 2 diabetes. Restoring the β cell mass by stimulating β cell proliferation and preventing its apoptosis was proposed as a therapeutic approach to treating diabetes. Therefore, researchers have been increasingly interested in identifying exogenous factors that can stimulate β cell proliferation in situ and in vitro. Adipokine chemerin, which is secreted from adipose tissue and the liver, has been identified as a chemokine that plays a critical role in the regulation of metabolism. In this study, we demonstrate that chemerin as a circulating adipokine promotes β cell proliferation in vivo and in vitro. Chemerin serum levels and the expression of the main receptors within islets are highly regulated under a variety of challenging conditions, including obesity and type 2 diabetes. As compared to their littermates, mice overexpressing chemerin had a larger islet area and increased β cell mass with both a normal and high-fat diet. Moreover, in chemerin-overexpressed mice, we observed improved mitochondrial homeostasis and increased insulin synthesis. In summary, our findings confirm the potential role of chemerin as an inducer of β cell proliferation, and they provide novel insights into the helpful strategy to expand β cell population. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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