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Published on: November 2, 2020
Roles of LIM proteins in cardiac hypertrophy
Mei Han1, Jin-Kun Wen, Bin Zheng
1Institute of Basic Medicine, Department of Biochemistry and Molecular Biology, Hebei Medical University, No. 361, Zhongshan East Road, Shijiazhuang 050017, China.
Insights
LIM proteins are crucial in cardiac hypertrophy, a condition causing significant human mortality. Understanding their function may lead to new therapies for managing this heart condition.
Area of Science:
- Cardiology
- Molecular Biology
- Genetics
Background:
- Cardiac hypertrophy is a major cause of human morbidity and mortality.
- It results from conditions like hypertension and myocardial infarction.
- Cardiac gene expression is regulated by transcription factors during hypertrophy.
Purpose of the Study:
- To explore the role of LIM proteins in cardiac hypertrophy.
- To understand the interactions and functions of LIM proteins in this condition.
Main Methods:
- Review of scientific literature on LIM proteins and cardiac hypertrophy.
- Analysis of protein domains and sequence homologies.
- Investigation of LIM protein interactions with cytoskeletal and transcriptional machinery.
Main Results:
- LIM proteins, including LIM-only proteins, muscle LIM protein, and human heart LIM protein, are involved in cardiac hypertrophy.
- These proteins function as integrators of cytoskeletal assembly or coactivators in gene transcription.
- Recent advancements highlight their complex roles and interactions in cardiac hypertrophy.
Conclusions:
- LIM proteins play a significant role in the development of cardiac hypertrophy.
- Further knowledge of LIM proteins offers potential for novel therapeutic strategies.
- Understanding these proteins can improve the management of cardiac hypertrophy.
Abstract:
Cardiac hypertrophy is caused by hypertension, myocardial infarction, endocrine disorders, and perturbations in sarcomeric function, and has become a major cause of human morbidity and mortality. The generation of cardiac hypertrophy is associated with regulation of a cardiac gene program by cardiac transcription factors. The LIM proteins have been discovered to play an important role in cardiac hypertrophy. The LIM proteins contain one, two or multiple LIM domains and can be divided into different classes according to their amino acid sequence homologies. The LIM-only proteins, muscle LIM protein and human heart LIM protein are involved in cardiac hypertrophy by functioning as either an integrator of protein assembly of the actin-based cytoskeleton or tissue-specific coactivator of the receptor and the transcription factors. There have been many recent developments in the functions of LIM proteins related to cardiac hypertrophy and their interactions. It is hoped that the knowledge of LIM proteins will at least provide a greater choice of therapies and improved our management of cardiac hypertrophy.
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