相关实验视频

Updated: Jan 14, 2026

PIP-on-a-chip: A Label-free Study of Protein-phosphoinositide Interactions

PIP-on-a-chip: A Label-free Study of Protein-phosphoinositide Interactions

Published on: July 27, 2017

使用基于的传感器检测生物膜中的PIP₂分布

Vinay K Menon¹, Joy Wu², Alex J Alonzo²

¹James Tarpo Jr. and Margaret Tarpo Department of Chemistry, Purdue University, West Lafayette, Indiana, USA; Purdue University Interdisciplinary Life Sciences (PULSe) Program, West Lafayette, Indiana, USA.

The Journal of biological chemistry

|October 18, 2025

概括

研究人员开发了一种新型传感器,用于检测细胞中的酸盐4,5-双酸 (PI(4,5) P2) 脂质. 这种工具揭示了Ras突变如何改变PI (4,5) P2分布,以及药物如何恢复正常的脂质安排.

科学领域:

细胞生物学细胞生物学
生物化学生物化学
分子生物学分子生物学

背景情况:

血组织影响细胞功能.
酸酸 (PIP) 脂质调节信号通路.
准确检测PIP脂质对于了解细胞过程至关重要.

研究的目的:

开发一种基于的新型传感器,用于量化PI{4,5) P2脂质.
为了研究Ras突变对活细胞PI(4,5) P2分布的影响.
评估索托拉西布治疗对Ras突变细胞PI (4,5) P2动态的影响.

主要方法:

实施基于的比度传感器来检测PI (4,5) P2.
在复制膜系统和活细胞中量化PI(4,5) P2密度.
传感器应用于表达Ras突变的细胞,并用Sotorasib治疗.

主要成果:

传感器准确地量化了PI{4,5) P2水平,直到生理度.
拉斯突变导致表面PI (4,5) P2水平和分布的突变特异性变化.
对G12C突变Ras细胞的索托拉西布治疗恢复了与野生类型相似的PI(4,5) P2安排.

结论:

这项研究强调了膜脂质组成和细胞信号之间的动态合.
开发的传感器为研究膜脂质组织及其在细胞程序中的作用提供了有价值的工具.
了解蛋白质-脂质相互作用是特征治疗和细胞机制的关键.

关键词:

拉斯蛋白 (Ras protein) 是一种蛋白质.光是一种光.膜生物物理学的生物物理学膜复合的复合方法基于的传感器.这是一种酸的酸.

更多相关视频

Single-molecule Super-resolution Imaging of Phosphatidylinositol 4,5-bisphosphate in the Plasma Membrane with Novel Fluorescent Probes

Single-molecule Super-resolution Imaging of Phosphatidylinositol 4,5-bisphosphate in the Plasma Membrane with Novel Fluorescent Probes

Published on: October 15, 2016

A Pipeline to Investigate the Structures and Signaling Pathways of Sphingosine 1-Phosphate Receptors

A Pipeline to Investigate the Structures and Signaling Pathways of Sphingosine 1-Phosphate Receptors

Published on: June 8, 2022

相关概念视频

Phosphoinositides and PIPs

Phosphoinositides and PIPs

Phosphoinositides are a group of phospholipids containing a glycerol backbone with two fatty acid chains and a phosphate attached to a myoinositol sugar ring. The inositol head group extends into the cytoplasm, where it is modified by adding phosphate groups to form phosphatidylinositol phosphates or PIPs.
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...