通过调节METTL3介导的Ctsk m6A修饰,T-2毒素诱导了冠状细胞细胞外基质降解
Bing Zhang1, Haonan Li2, Fang Qi2
1Institute for Kashin-Beck Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150081, Heilongjiang, China; National Healthy Commission and Education Bureau of Heilongjiang Province, Key Laboratory of Etiology and Epidemiology, Harbin Medical University (23618504), Heilongjiang Provincial Laboratory of Trace Element and Human Health, Harbin Medical University, Harbin 150081, China; School of Public Health, Beihua University, Jilin 132013, Jilin, China.
在卡辛-贝克病 (KBD) 中,T-2毒素会导致软骨损伤. 研究人员发现,METTL3介导的m6A修饰的Cathepsin K (Ctsk) 驱动这种损伤,提供了一个潜在的治疗点.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 病理学 病理学 病理学
背景情况:
- 卡辛-贝克病 (KBD) 涉及到软骨损伤,T-2毒素被确定为主要的病因因素.
- 已知N6-adenosine-methyltransferase-like 3 (METTL3) 影响软骨损伤,但其在T-2毒素引起的损伤中的具体作用尚不清楚.
研究的目的:
- 调查METTL3-介导的m6A修饰在T-2毒素引起的软骨损伤中的作用.
- 为了确定参与这种病理过程的METTL3的下游目标.
主要方法:
- 利用m6A甲基化RNA免疫沉 (MeRIP) 测序和RNA测序来识别METTL3标.
- 在体外研究了METTL3和cathepsin K (Ctsk) 沉默对软骨细胞外基质 (ECM) 降解的影响.
- 在实体中评估了食中补充 metionin 对软骨损伤的影响.
主要成果:
- 通过METTL3介导的m6A甲基化水平与软骨ECM降解相反相关.
- 卡赫普辛K (Ctsk) 被确定为METTL3.3的直接下游目标.
- 沉默Ctsk加剧了T-2毒素诱导的ECM降解,同时通过补充 metionin增加m6A水平减轻了软骨损伤.
结论:
- T-2毒素通过调节Ctsk.的METTL3-介导的m6A修饰来诱导软骨ECM降解.
- METTL3/m6A/Ctsk信号轴代表了对 KBD 和相关的软骨疾病的有希望的治疗点.
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