相关实验视频
Updated: May 12, 2026

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Inducible and Reversible Dominant-negative (DN) Protein Inhibition
Published on: January 7, 2019
布雷菲尔丁A在MDCK细胞中的选择性抑制转细胞形成
W Hunziker1, J A Whitney, I Mellman
1Department of Cell Biology, Yale University School of Medicine, New Haven, Connecticut 06510.
Cell
|November 1, 1991
概括
布雷菲尔丁A (BFA) 可逆地阻断脏细胞中的聚合性免疫球蛋白受体转细胞. 这表明内细胞器官有BFA敏感的外,与抗BFA的戈尔吉外不同.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 蜂传输运输 蜂传输 蜂传输 蜂传输
背景情况:
- 众所周知,布雷菲尔丁A (BFA) 通过导致其回收到内分泌网膜来破坏戈尔吉综合体.
- 这种效应主要归因于抑制外套蛋白与戈尔吉膜结合.
- 以前认为BFA的作用仅限于生物合成有机体.
研究的目的:
- 为了研究BFA对由聚合物免疫球蛋白受体介导的细胞转移的作用.
- 为了确定BFA是否影响其他细胞过程,如内化,循环或降解.
- 阐明受BFA影响的转细胞路径的特定阶段.
主要方法:
- 用BFA.治疗马丁-达比犬 (MDCK) 细胞.
- 聚合性免疫球蛋白受体介导的细胞转移的分析.
- 评估受体内部化,回收和降解的情况.
- 对内和戈尔吉形态的显微镜检查.
- 对β-COP与戈尔吉膜结合的评估.
主要成果:
- BFA选择性和可逆地阻断了聚合物免疫球蛋白受体介导的细胞转移.
- 内部化,回收和降解途径不受BFA的影响.
- 由BFA诱导的阻断发生在转细胞通路的早期,在囊泡转位之前.
- MDCK细胞内基因组变得更加管状,而戈尔吉组织和β-COP结合不受影响.
结论:
- 内细胞有机体具有对BFA敏感的外,调节它们的组织和功能.
- 内体中的这种BFA敏感层与戈尔吉装置中发现的BFA耐药层不同.
- BFA提供了一个工具来剖析不同细胞运输通路的独特外层要求.
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