相关实验视频

Updated: Sep 15, 2025

Neonatal Cardiac Scaffolds: Novel Matrices for Regenerative Studies

Neonatal Cardiac Scaffolds: Novel Matrices for Regenerative Studies

Published on: November 5, 2016

在初级新生儿心肌细胞中,Desmoglein 2相互作用

Yang Li¹, Alexandra P Campbell¹, Sahana Balasubramanian¹

¹Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.

bioRxiv : the preprint server for biology

|July 15, 2025

概括

这项研究在Desmoglein 2 (DSG2) 相互作用体中鉴定了300多种蛋白质,揭示了心肌细胞间接盘 (ICD) 中的关键粘附和信号蛋白. 这些发现增强了我们对心脏细胞连接和功能的理解.

科学领域:

心血管生物学心血管生物学
细胞粘附细胞粘附
蛋白质组学是指蛋白质组学.

背景情况:

间隔盘 (ICD) 对于心肌细胞的机械合和化学通信至关重要.
形成ICD的蛋白质网络,对于心脏功能至关重要,尚未完全表征.
了解这些蛋白质复合体对于心脏健康至关重要.

研究的目的:

通过近距离标记和质谱仪在培养的新生儿心肌细胞中识别与Desmoglein 2 (DSG2) 相关的蛋白质.
为了定义心肌细胞间隔盘内DSG2的蛋白质相互作用体.
为了比较DSG2互动组与其他已知的心脏粘附蛋白互动组.

主要方法:

用近距离标记技术来捕捉体内蛋白质的关联.
量化质谱法用于识别和量化DSG2互动组中的蛋白质.
进行了生物信息分析,以比较相互作用体,并确定独特和共享的蛋白质.

主要成果:

在心肌细胞的DSG2互动体中发现了300多种蛋白质.
大约50%的DSG2相互作用蛋白还在N-cadherin (CDH2) 相互作用组中发现.
独特的DSG2相互作用蛋白包括连接素43和斑块蛋白家族成员;斑块蛋白 (JUP) 和斑块蛋白2 (PKP2) 是丰富的共享蛋白.
心肌细胞DSG2互动体和上皮层脱体蛋白互动体之间共享的蛋白质很少.

结论:

这项研究提供了心肌细胞中DSG2互动组的全面蛋白质图.
这揭示了对间接盘的分子组成的新见解,特别是关于粘附和信号复合物的新见解.
这些发现为了解心肌细胞粘附和心脏功能做出了重大贡献.

更多相关视频

Analysis of Cardiomyocyte Development using Immunofluorescence in Embryonic Mouse Heart

Analysis of Cardiomyocyte Development using Immunofluorescence in Embryonic Mouse Heart

Published on: March 26, 2015

Visualization of Cell Cycle Variations and Determination of Nucleation in Postnatal Cardiomyocytes

Visualization of Cell Cycle Variations and Determination of Nucleation in Postnatal Cardiomyocytes

Published on: February 24, 2017

相关概念视频

Desmosomes

Desmosomes

The term desmosome derives from the Greek words "desmo" and "soma" meaning "adhesion bodies." This structure was first observed during the late 1800s and described as small, dense nodules in the epidermis. Desmosomes are button-like structures that help form an interlinked network of intermediate filaments across the cells. These junctions are essential to hold cells together under mechanical stress and to maintain tissue integrity. Desmosomes are multi-protein...

Cardiomyopathy II: Dilated Cardiomyopathy

Cardiomyopathy II: Dilated Cardiomyopathy

Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...