IL18 signaling causes islet β cell development and insulin secretion via different receptors on acinar and β cells.

IL18 signaling causes islet β cell development and insulin secretion via different receptors on acinar and β cells.
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IL18信号通过腺泡细胞和β细胞上不同的受体促进胰岛β细胞的发育和胰岛素的分泌。

DOI:
10.1016/j.devcel.2022.05.013
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发表时间:
2022-06-20
期刊:
影响因子:
11.8
通讯作者:
Shi, Guo-Ping
Shi, Guo-Ping
中科院分区:
生物学1区
文献类型:
--
作者:
Zhang, Xian;Luo, Songyuan;Wang, Minjie;Huang, Qin;Fang, Wenqian;Li, Jie;Liu, Tianxiao;Zhang, Yuanyuan;Deng, Zhiyong;Liu, Cong-Lin;Guan, Shuling;Ayala, Julio E.;Flavell, Richard A.;Kulkarni, Rohit N.;Libby, Peter;Guo, Junli;Liu, Zhangsuo;Shi, Guo-Ping

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糖尿病患者显示升高的血浆IL 18浓度。IL 18具有两种受体:IL 18受体(IL 18 r)和Na-Cl共转运蛋白(NCC)。在此,我们报道了IL 18在人和小鼠胰腺中表达于胰岛α细胞,NCC表达于β细胞,而IL 18 r表达于腺泡细胞。这些受体的缺乏减少胰岛大小、β细胞增殖和胰岛素分泌,但在饮食诱导的葡萄糖耐受不良或链脲霉素诱导的高血糖症后增加β细胞凋亡和外分泌巨噬细胞积聚。与GLP 1(胰高血糖素样肽-1)一起,IL 18使用β细胞上的NCC和GLP 1受体来触发β细胞发育和胰岛素分泌。IL 18还使用腺泡细胞上的IL 18 r来阻断高血糖胰腺巨噬细胞扩增。NCC的β细胞选择性耗竭或腺泡细胞选择性IL 18 r耗竭降低了葡萄糖耐量和胰岛素敏感性,并在小鼠高血糖胰腺中损害了β细胞增殖、增强了β细胞凋亡和巨噬细胞扩增以及炎症。IL 18使用NCC、GLP 1 r和IL 18 r来维持胰岛β细胞功能和稳态。Zhang等人证明,IL 18和GLP 1与胰岛β细胞上的Na-Cl共转运蛋白和GLP 1受体结合,控制β细胞凋亡、增殖和胰岛素分泌。IL 18通过IL 18受体激活腺泡细胞,调节高血糖外分泌和内分泌炎症以及胰岛β细胞功能和稳态。
Diabetic patients show elevated plasma IL18 concentrations. IL18 has two receptors: IL18 receptor (IL18r) and the Na-Cl co-transporter (NCC). Here we report that IL18 is expressed on islet α cells, NCC on β cells, and IL18r on acinar cells in human and mouse pancreas. Deficiency of these receptors reduces islet size, β-cell proliferation, and insulin secretion, but increases β-cell apoptosis and exocrine macrophage accumulation after diet-induced glucose intolerance or streptozotocin-induced hyperglycemia. Together with the GLP1 (glucagon-like peptide-1), IL18 uses NCC and GLP1 receptor on β cells to trigger β-cell development and insulin secretion. IL18 also uses IL18r on acinar cells to block hyperglycemic pancreas macrophage expansion. β-cell-selective depletion of NCC or acinar cell-selective IL18r depletion reduces glucose tolerance and insulin sensitivity with impaired β-cell proliferation, enhanced β-cell apoptosis and macrophage expansion and inflammation in mouse hyperglycemic pancreas. IL18 uses NCC, GLP1r, and IL18r to maintain islet β-cell function and homeostasis. Zhang et al. demonstrate that IL18 and GLP1 bind to both Na-Cl co-transporter and GLP1 receptors on islet β cells, controlling β-cell apoptosis, proliferation, and insulin secretion. IL18 activates acinar cells via the IL18 receptor, regulating hyperglycemic exocrine and endocrine inflammation and islet β-cell function and homeostasis.
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