Institute of Preventive Medicine, School of Public Health, Dali University, No. 22, Wanhua Road, Dali, Yunnan, 671000, China.
College of Engineering, Dali University, Dali, Yunnan, 671003, China.
Cell Biochem Biophys. 2024 Sep;82(3):2217-2226. doi: 10.1007/s12013-024-01331-8. Epub 2024 May 31.
Both dysregulation of N-methyladenosine (mA) regulatory proteins and Nrf2 signaling molecules are involved in the process of injury to multiple tissues. However, changes of mA regulatory proteins and Nrf2 signaling molecules in liver tissue of T2DM remain unclear. In present study, changes of mA regulatory proteins (Mettl3, Mettl16, Fto, Alkbh5 and Ythdc2) and Nrf2 signaling molecules (Nrf2, Sod1, Ho-1, Gclc) were detected in the liver tissues of T2DM rats, which constructed by high fat-diet feeding and intraperitoneal injection of streptozotocin. Our results indicated that the morphology of liver tissues from T2DM rats showed obvious abnormalities, as well as levels of liver function indicators and expressions of Nrf2 signaling molecules Nrf2, Sod1, Ho-1 were significantly increased in T2DM rats when compared with those in corresponding control rats. More importantly, mA regulatory proteins such as Mettl3, Mettl16, Fto, Alkbh5 and Ythdc2 were dramatically higher than those in control rat. In a word, mA regulatory proteins and Nrf2 signaling molecules may significantly change in liver tissue of T2DM rats. And This provides clues and ideas for the study of liver injury in T2DM from the perspective of RNA epigenetics in the future.
N6-甲基腺苷(m6A)调控蛋白和 Nrf2 信号分子的失调均参与了多种组织损伤的过程。然而,T2DM 肝组织中 m6A 调控蛋白和 Nrf2 信号分子的变化尚不清楚。在本研究中,通过高脂饮食喂养和腹腔注射链脲佐菌素构建了 T2DM 大鼠模型,检测了 T2DM 大鼠肝组织中 m6A 调控蛋白(Mettl3、Mettl16、Fto、Alkbh5 和 Ythdc2)和 Nrf2 信号分子(Nrf2、Sod1、Ho-1、Gclc)的变化。结果表明,与相应的对照组大鼠相比,T2DM 大鼠肝组织形态明显异常,肝功能指标水平和 Nrf2 信号分子 Nrf2、Sod1、Ho-1 的表达显著升高。更重要的是,Mettl3、Mettl16、Fto、Alkbh5 和 Ythdc2 等 m6A 调控蛋白的水平明显高于对照组大鼠。总之,m6A 调控蛋白和 Nrf2 信号分子可能在 T2DM 大鼠肝组织中发生显著变化。这为从 RNA 表观遗传学角度研究 T2DM 肝损伤提供了线索和思路。