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Diabetologia:Ifi202b/IFI16表达的增加刺激小鼠和人的脂肪形成

2018-07-03 MedSci MedSci原创

近日,国际杂志 《Diabetologia》上在线发表一项关于Ifi202b/IFI16表达的增加刺激小鼠和人的脂肪形成的研究。 环境刺激与易感基因之间不断且复杂的相互作用导致了肥胖的发生。最近,研究人员鉴定了IFN-激活的基因Ifi202b是作为负责肥胖数量性状基因座Nob3(新西兰肥胖[NZO]肥胖3)的最可能的基因。这项研究的目的是评估Ifi202b对体重和脂肪组织生物学影响,并澄清其

近日,国际杂志 《Diabetologia》上在线发表一项关于Ifi202b/IFI16表达的增加刺激小鼠和人的脂肪形成的研究。

环境刺激与易感基因之间不断且复杂的相互作用导致了肥胖的发生。最近,研究人员鉴定了IFN-激活的基因Ifi202b是作为负责肥胖数量性状基因座Nob3(新西兰肥胖[NZO]肥胖3)的最可能的基因。这项研究的目的是评估Ifi202b对体重和脂肪组织生物学影响,并澄清其人类直系同源物IFI16的功能作用。

Ifi202b和其直系同源物人类IFI16对脂肪生成的影响是通过调节它们各自在小鼠3T3-L1和人辛普森-Golabi-Behmel综合征(SGBS)前脂肪细胞的表达而研究的。此外,过表达IFI202b的转基因小鼠在代谢特征方面。在人类中,IFI16在脂肪组织中的表达水平与脂肪细胞功能的几个变量相关。

在小鼠中,IFI202b过表达引起脂肪质量增加导致肥胖(30周龄时体重为10.2±1.9g vs野生型小鼠),Zfp423(编码转录因子锌指蛋白[ZFP] 423)和白色选择性基因(Tcf21Tle3)表达增加,并减少热原基因(如CideaUcp1)的表达。与其野生型同窝小鼠相比,Ifi202b转基因小鼠表现出较低的体温,肝脏脂肪变性和全身性胰岛素抵抗。抑制前脂肪细胞中IFI202b/IFI16使脂肪细胞分化和三酰甘油储存受损。高水平表达的人类IFI16 在白色脂肪组织中表现出较大的脂肪细胞,增强的炎症状态和胰岛素刺激的葡萄糖摄取受损。

研究人员的研究结果揭示了Ifi202bIFI16新的功能,展示它们作为肥胖的基因的作用。这些基因促进白色脂肪形成和脂肪储存,从而促进肥胖相关胰岛素抵抗的发展。

原始出处:

Mandy Stadion, Kristin Schwerbel, Antonia Grajaet al. Increased Ifi202b/IFI16 expression stimulates adipogenesis in mice and humans

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    2018-07-04 邓启付

    肥胖的研究和临床干预是预防肥胖的根本渠道.

    0

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    2018-07-03 wzb521zf

    一起学习学习

    0

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