Loss of ubiquitin-conjugating enzyme E2 (Ubc9) in macrophages exacerbates multiple low-dose streptozotocin-induced diabetes by attenuating M2 macrophage polarization

Type 1 diabetes (T1D) is characterized by the selective autoimmune destruction of the islet β cells, and macrophages play a significant role in this process. Small ubiquitin-like modification (SUMOylation) is an important posttranslational modification involved in T1D pathogenesis, but its function...

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Veröffentlicht in:Cell death & disease 2019-11, Vol.10 (12), p.892-16, Article 892
Hauptverfasser: Wang, Faxi, Sun, Fei, Luo, Jiahui, Yue, Tiantian, Chen, Longmin, Zhou, Haifeng, Zhang, Jing, Yang, Chunliang, Luo, Xi, Zhou, Qing, Zhu, He, Li, Jinxiu, Yang, Ping, Xiong, Fei, Yu, Qilin, Zhang, Huilan, Zhang, Wanguang, Xu, Aimin, Zhou, Zhiguang, Lu, Qianjin, Eizirik, Decio L., Zhang, Shu, Wang, Cong-Yi
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Sprache:eng
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Zusammenfassung:Type 1 diabetes (T1D) is characterized by the selective autoimmune destruction of the islet β cells, and macrophages play a significant role in this process. Small ubiquitin-like modification (SUMOylation) is an important posttranslational modification involved in T1D pathogenesis, but its function in macrophages remains unexplored. We presently developed and used macrophage-specific ubiquitin-conjugating enzyme E2 ( Ubc9 ) knockout (LyzM-Cre -Ubc9 fl/fl , KO) mice to address the impact of SUMOylation on macrophage function in a T1D model. We observed that blocking Ubc9 in macrophages exacerbated multiple-low dose streptozotocin (MLD-STZ)-induced diabetes. Specifically, after STZ treatment, blood glucose levels were consistently elevated in the KO mice. The KO mice exhibited a higher diabetes incidence than WT controls (85% vs. 55%, P  
ISSN:2041-4889
2041-4889
DOI:10.1038/s41419-019-2130-z