It has been known for several decades that mutations in genes that encode for proteins involved in the control of actomyosin interactions such as the troponin complex, tropomyosin and MYBP-C and thus regulate contraction can lead to hereditary hypertrophic cardiomyopathy. In recent years, it has become apparent that actin-binding proteins not directly involved in the regulation of contraction also can exhibit changed expression levels, show altered subcellular localisation or bear mutations that might lead to hereditary cardiomyopathies. The aim of this review is to look beyond the troponin/tropomyosin mechanism and to give an overview of the different types of actin-associated proteins and their potential roles in cardiomyocytes. It will then discuss recent findings relevant to their involvement in heart disease.
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http://dx.doi.org/10.1007/s12551-018-0428-1 | DOI Listing |
Cytoskeleton (Hoboken)
December 2024
Department of Biological Sciences, Centre for Cell Biology, Development, and Disease, Simon Fraser University, Burnaby, British Columbia, Canada.
Enteropathogenic Escherichia coli (EPEC) causes diarrheal disease. Once ingested, these extracellular pathogens attach to the intestinal epithelial cells of their host, collapse the localized microvilli, and generate actin-rich structures within the host cells that are located beneath the attached bacteria, called "pedestals." Palladin is an actin-associated protein that cross-links and stabilizes actin filaments.
View Article and Find Full Text PDFEur J Pharmacol
January 2025
Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil. Electronic address:
Ezrin (EZR) is an actin-associated protein that is often upregulated in cancers. Here we investigate the role of EZR in acute lymphoblastic leukemia (ALL) and explore the therapeutic potential of a pharmacological EZR inhibitor, NSC305787. ALL patient cohorts exhibit significantly elevated EZR mRNA levels, indicating its association with the malignant phenotype.
View Article and Find Full Text PDFFront Cell Neurosci
November 2024
Department of Pharmacology & Therapeutics, McGill University, Montreal, QC, Canada.
Synaptopodin, an actin-associated protein found in a subset of dendritic spines in telencephalic neurons, has been described to influence both functional and morphological plasticity under various plasticity paradigms. Synaptopodin is necessary and sufficient for the formation of the spine apparatus, stacks of smooth endoplasmic reticulum cisternae. The spine apparatus is a calcium store that locally regulates calcium dynamics in response to different patterns of activity and is also thought to be a site for local protein synthesis.
View Article and Find Full Text PDFFunction (Oxf)
November 2024
Enabling Technologies Group, Sanford Research, Sioux Falls, SD, USA 57104.
Our previous work established a role for actin associated myosin motor proteins MYH9 and MYH10 in the trafficking of thick ascending limb (TAL) specific cargoes, uromodulin (UMOD) and Na + K + 2Cl- cotransporter (NKCC2). Here, we have generated a TAL-specific Myh9&10 conditional knockout (Myh9&10 TAL-cKO) mouse model to determine the cell autonomous roles for MYH9&10 proteins in TAL cargo transport and to understand the consequence of TAL dysfunction in the adult kidney. Myh9&10 TAL-cKO mice develop progressive kidney disease with pathological tubular injury confirmed by histological changes, tubular injury markers, upregulation of ER stress/unfolded protein response pathway, and higher blood urea nitrogen and serum creatinine.
View Article and Find Full Text PDFToxicol Appl Pharmacol
November 2024
Department of Histology and Embryology, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic. Electronic address:
Inhibition of soluble epoxide hydrolase (sEH) appears to be promising for the treatment of many diseases. Studies have focused on the beneficial effects of epoxyeicosatrienoic acids (EETs), which are sEH substrates. However, our recent studies have shown that the sEH activity is crucial for the proper intestinal cell differentiation.
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