脱氧尼瓦伦醇会在C2C12核细胞中引发线粒灾难和亡
Zhenzhen Wang1, Huimin Duan2, Xue You2
1CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, China.
Ecotoxicology and environmental safety
|June 22, 2024
概括
脱氧尼瓦伦醇 (DON) 抑制了骨肌肉细胞的增殖,并破坏了细胞分裂. 这种真菌毒素通过影响细胞外基质和细胞循环调节来触发亡.
科学领域:
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 常见的食品污染物脱氧尼瓦伦醇 (DON) 已知有毒作用,但其对骨肌细胞的影响尚不清楚.
- 了解DON对肌肉细胞的影响至关重要,因为它在以谷物为基础的食物中普遍存在.
研究的目的:
- 调查DON对小鼠C2C12髓母细胞的增殖和细胞周期的影响.
- 阐明在骨肌细胞中DON诱导的毒性背后的分子机制.
主要方法:
- 用不同剂量的DON治疗小鼠C2C12神经细胞.
- 进行了RNA测序 (RNA-seq) 和基因组丰富分析.
- 免疫化被用来分析纤维内克的分布和形的形成.
主要成果:
- 没有证明剂量依赖性毒性,显著抑制C2C12细胞增殖.
- 与细胞外基质 (ECM) 和凝缩染色体相关的基因被下调.
- 暴露于DON导致纤维素凝聚,多极旋形成,细胞循环中断,p53-p21通路激活和亡.
结论:
- DON会损害骨肌细胞的增殖,并通过ECM变化和细胞循环中断诱导毒性.
- 这些发现揭示了DON在骨肌细胞中的作用机制,涉及通过p53-p21通路诱导亡.
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