» Articles » PMID: 38006882

Multiscale Biophysical Models of Cardiomyopathies Reveal Complexities Challenging Existing Dogmas

Overview
Journal Biophys J
Publisher Cell Press
Specialty Biophysics
Date 2023 Nov 25
PMID 38006882
Authors
Affiliations
Soon will be listed here.
Abstract

Mutations in sarcomeric proteins, including myosin, cause a variety of cardiomyopathies. A prominent hypothesis has been that myosin mutations causing hypercontractility of the motor lead to hypertrophic cardiomyopathy, while those causing hypocontractility lead to dilated cardiomyopathy; however, recent biophysical studies using multiscale computational and experimental models have revealed complexities not captured by this hypothesis. We summarize recent publications in Biophysical Journal challenging this dogma and highlighting the need for multiscale modeling of these complex diseases.

References
1.
Greenberg M, Tardiff J . Complexity in genetic cardiomyopathies and new approaches for mechanism-based precision medicine. J Gen Physiol. 2021; 153(3). PMC: 7852459. DOI: 10.1085/jgp.202012662. View

2.
Spudich J . Hypertrophic and dilated cardiomyopathy: four decades of basic research on muscle lead to potential therapeutic approaches to these devastating genetic diseases. Biophys J. 2014; 106(6):1236-49. PMC: 3985504. DOI: 10.1016/j.bpj.2014.02.011. View

3.
Sarkar S, Trivedi D, Morck M, Adhikari A, Pasha S, Ruppel K . The hypertrophic cardiomyopathy mutations R403Q and R663H increase the number of myosin heads available to interact with actin. Sci Adv. 2020; 6(14):eaax0069. PMC: 7124958. DOI: 10.1126/sciadv.aax0069. View

4.
Nag S, Trivedi D . To lie or not to lie: Super-relaxing with myosins. Elife. 2021; 10. PMC: 7875563. DOI: 10.7554/eLife.63703. View

5.
Tang W, Ge J, Unrath W, Desetty R, Yengo C . Cardiomyopathy mutations impact the actin-activated power stroke of human cardiac myosin. Biophys J. 2021; 120(11):2222-2236. PMC: 8390809. DOI: 10.1016/j.bpj.2021.04.007. View