裂变酵母Bsd1是以一种独立的方式对ER应激反应所需的
Pinaki Prasad Mahapatra1,2, Shakil Ahmed3,4
1Biochemistry and Structural Biology Division, CSIR- Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, 226031, India.
Molecular biology reports
|November 27, 2024
概括
裂变酵母Bsd1可以防止尼胺素诱导的内分泌网膜 (ER) 应激和亡. 这种保护作用独立于Ire1通路运行,突出显示Bsd1.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 应激反应路径 应激反应路径
背景情况:
- 细胞内膜网膜 (ER) 对于蛋白质折叠和排毒至关重要.
- NEDD4,一个HECT E3泛素联酶,参与ER压力.
- 哺乳动物Ndfip1的S. pombe Ortholog Bsd1被研究其在ER压力中的作用.
研究的目的:
- 探索S. pombe Bsd1在尼卡米辛诱导的ER应激反应途径中的功能.
- 为了确定BSD1是否起到保护ER应激的作用.
- 调查BSD1参与ER压力的机制.
主要方法:
- 用GFP标记的BSD1进行共聚焦显微镜,以确定定位.
- 基因表达分析以量化压力下的BSD1水平.
- 阿克里丁色/乙化染色和MTT试验,以评估细胞活力和细胞亡.
- FM4-64染色用于评估真空结构.
- 基因相互作用分析与ire1Δ突变体.
主要成果:
- Bsd1定位在膜上,在图尼卡米辛治疗下信号增加.
- 在暴露于尼卡米辛后,BSD1的表达显著增加.
- 在ER压力下,BSd1 (bsd1Δ) 的损失导致细胞亡和真空缺陷的增加.
- 在尼卡米辛诱导的ER压力中BSD1的作用似乎独立于Ire1通路.
结论:
- 分裂酵母Bsd1在ER应激反应中发挥着重要作用.
- Bsd1在Ire1独立的途径中起作用,以防止ER压力.
- 在ER压力期间,BSD1参与调节亡细胞死亡并保持真空结构完整性.
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