Protein 4.1 family and ion channel proteins interact to regulate the process of heart failure in rats

Related Experiment Video

Updated: Oct 28, 2025

Determination of the Relative Cell Surface and Total Expression of Recombinant Ion Channels Using Flow Cytometry
11:32

Determination of the Relative Cell Surface and Total Expression of Recombinant Ion Channels Using Flow Cytometry

Published on: September 28, 2016

13.5K

Shuwei Ning1, Lei Hua1, Zhenyu Ji2

  • 1Zhengzhou Key Laboratory, Zhengzhou No. 7 People's Hospital, Zhengzhou, 450016, China.

Acta Histochemica
|July 16, 2021
PubMed

Insights

The protein 4.1 family interacts with ion channels in heart failure (HF). These interactions suggest 4.1 proteins could be a new therapeutic target for preventing HF progression.

Area of Science:

  • Cardiovascular Biology
  • Molecular Cardiology
  • Cellular Cytoskeleton Dynamics

Background:

  • Heart failure (HF) is a leading cause of death globally, with poorly understood molecular mechanisms.
  • The myocardial cytoskeleton is crucial in heart disease, but the role of the protein 4.1 family in HF pathogenesis is unclear.

Purpose of the Study:

  • To investigate the expression, localization, and interactions of the protein 4.1 family with ion channels in a rat model of doxorubicin-induced heart failure.
  • To explore the potential role of protein 4.1 family members in the development of heart failure.

Main Methods:

  • Doxorubicin-induced rat model of heart failure.
  • Detection of protein 4.1 family members (4.1R, 4.1G, 4.1N) and ion channel proteins (Nav1.5, SERCA2a, Cav1.2) expression and localization.
  • Analysis of protein-protein interactions and co-localization.

Main Results:

  • Heart failure group showed increased protein 4.1R and decreased protein 4.1G and 4.1N levels compared to controls.
  • Nav1.5 levels increased, while SERCA2a and Cav1.2 levels decreased in the heart failure group.
  • Specific interactions and co-localization were observed between protein 4.1R/Nav1.5, 4.1G/SERCA2a, and 4.1N/Cav1.2.

Conclusions:

  • The protein 4.1 family is implicated in heart failure development through interactions with key ion channel proteins.
  • Protein 4.1 family members represent potential novel therapeutic targets for heart failure treatment.

Keywords:
4.1 ProteinsHeart failureIon channel proteinsMyocardial cytoskeletonProtein Interaction

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