选择性化Hsp90作为一种代谢开关,促进瘤细胞增殖
Isabelle E Logan1, Kyle T Nguyen2, Tilottama Chatterjee2
1Department of Biochemistry and Biophysics, College of Science, Oregon State University, Corvallis, OR, 97331, USA; Center for Translational Science, Florida International University, Florida, 34987, USA.
氨酸化,瘤中的一个过程,激活热冲击蛋白90 (Hsp90) 驱动瘤细胞生长. 化Hsp90充当代谢开关,为NF2相关的 Schwannomatosis 提供新的治疗点.
科学领域:
- 在瘤学瘤学.
- 生物化学 生物化学
- 细胞生物学 细胞生物学
背景情况:
- 瘤表现出氧化环境,有过氧酸盐生产和蛋白质氨酸化.
- 氨酸化调节NF2-SWN相关的细胞代谢和增殖.
研究的目的:
- 为了确定特定的化蛋白质,参与瘤细胞的增殖和代谢.
- 研究热冲击蛋白90 (Hsp90) 化在NF2-SWN中的作用.
主要方法:
- 在 schwannoma 细胞中鉴定化蛋白质.
- 对内源性化Hsp90水平的操纵和补充到正常的施万细胞中.
- 对代谢变化 (氧化酸化,糖解) 和细胞增殖的分析.
- 在3D细胞培养模型中评估化Hsp90变体 (Hsp90NY33,Hsp90NY56) 的亚细胞局部化.
主要成果:
- 热冲击蛋白90 (Hsp90) 被认定为第一个化蛋白来促进瘤扩散.
- 在Y33 (Hsp90NY33) 中化Hsp90降低了线粒体氧化酸化的下调.
- 在Y56 (Hsp90NY56) 中化Hsp90可通过P2X7受体激活来增强糖解.
- Hsp90NY33和Hsp90NY56都表现出不同的分布和功能,影响细胞增殖.
结论:
- 氨酸化Hsp90作为一种代谢开关,驱动神经瘤细胞的增殖.
- 化Hsp90代表了一类新的瘤治疗点,特别是NF2-SWN.
- 蛋白质氨酸化是一种关键的翻译后修饰,可以调节癌症中的细胞过程.
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