开发和表征一种穿透膜的GRASP65模拟性,可以抑制戈尔吉解结和细胞循环进展
Romina Ines Cervigni1, Raffaella Bonavita2, Maria Luisa Barretta1
1Institute of Endotypes in Oncology, Metabolism and Immunology "G. Salvatore" (IEOMI), National Research Council (CNR), Via P. Castellino 111, 80131 Naples, Italy.
Methods (San Diego, Calif.)
|December 3, 2025
概括
研究人员开发了一种新型,专门抑制戈尔吉丝带解,这是细胞分裂的关键过程. 这种工具有助于研究戈尔吉健康和疾病的复杂动态,包括癌症.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 戈尔吉综合体对于细胞平衡,蛋白质加工和贩运至关重要.
- 戈尔吉带组织是动态的,在细胞分裂和癌症等疾病中进行重塑.
- GRASP65酸化是戈尔吉带解的关键,使细胞循环的进展成为可能.
研究的目的:
- 开发一种特殊的工具来操纵GRASP65在戈尔吉丝带组织中的作用.
- 为了研究GRASP65酸化在戈尔吉解和细胞循环进入中的功能.
- 探索这个工具在研究涉及戈尔吉解体的病理状况时的实用性.
主要方法:
- 开发一种通过膜透的 (R8-GRASP65-S277) 向GRASP65酸化部位 (Ser277).
- 描述对戈尔吉解结和各种细胞系中线性进入的抑制作用.
- 使用对照 (R8-GRASP65-S277A) 与氨酸替代,以确认特异性.
- 评估的反转多克索鲁比诱导的戈尔吉解结的能力.
主要成果:
- R8-GRASP65-S277特异性抑制了戈尔吉丝带脱,并阻止了 mitotic 进入多个细胞系,包括癌症模型.
- 缺乏化部位的对照 (R8-GRASP65-S277A) 没有影响戈尔吉解,证实了的特异性.
- 该R8-GRASP65-S277成功地逆转了由化疗剂多克索鲁比辛诱导的戈尔吉解结.
- 该工具在研究压力诱导的Golgi拆卸方面表现出有效性.
结论:
- R8-GRASP65-S277是一种特定的,强大的,可扩展的工具,用于研究戈尔吉解结.
- 这种可以促进研究通过戈尔吉动态调节细胞循环进展的研究.
- 该工具有助于理解戈尔吉解在癌症和神经退行症等病态状态中的作用.
相关概念视频
Pinching-off of Coated Vesicles
4.0K
Vesicle budding is orchestrated by distinct cytosolic proteins such as adaptor proteins, coat proteins, and GTPases. To initiate vesicle budding, membrane-bending proteins containing crescent-shaped BAR domains bind to the lipid heads in the bilayer and distort the membrane to form a protein-coated vesicle bud. Adaptors proteins such as AP2 for clathrin-coated vesicles can nucleate on the deformed membrane. Finally, coat proteins such as clathrin or COPI and COPII assemble into a coat forming...
4.0K
Negative Regulator Molecules
38.2K
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
38.2K
Coat Assembly and GTPases
4.2K
Vesicles incorporate different coat protein subunits in different cell locations, which changes the properties of the coat, such as the shape and geometry of the transport vesicles. Thus, vesicle coat proteins also play a significant role in cargo selection.
Coat assembly depends on the local availability of phosphatidylinositol phosphates or PIPs and GTP-binding proteins. Adaptor proteins, which link the coat proteins to the membrane, bind to these PIPs and play a crucial role in controlling...
Coat assembly depends on the local availability of phosphatidylinositol phosphates or PIPs and GTP-binding proteins. Adaptor proteins, which link the coat proteins to the membrane, bind to these PIPs and play a crucial role in controlling...
4.2K
Anaphase Promoting Complex
3.3K
The stepwise destruction of specific proteins is necessary for the progression and completion of the cell cycle. Such proteins are ubiquitinated by ubiquitin ligases and then subsequently destroyed by the proteasome. The SCF (Skp1/Cullin/F-box) and the anaphase-promoting complex (APC) are two important ubiquitin ligases involved in cell cycle progression. While SCF is active throughout the cell cycle, APC gets activated during metaphase to anaphase transition. Cdc20 or Cdh1 binds to APC and...
3.3K
Inhibition of Cdk Activity
5.5K
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
5.5K


