ArticleJournal of molecular and cellular cardiology2018
Cardiac-specific knockout of Lmod2 results in a severe reduction in myofilament force production and rapid cardiac failure.
Article in Journal of molecular and cellular cardiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.
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Who cites it
30 citing papers in PubMed, 37 citations in OpenAlex.
- Loss of the Coronary Artery Disease Risk GeneCirculation · 2026Article
- Leiomodin 2 is a processive pointed-end elongator of actin filaments.Nature communications · 2026Article
- Mechanism of actin thin filament pointed-end elongation by leiomodin.Nature communications · 2026Article
- Leiomodin 2 functions as a processive pointed-end elongator of actin filaments.bioRxiv : the preprint server for biology · 2026Article
- Titin's P-zone domains A164-167 are essential for thick filament structural arrangement.The Journal of general physiology · 2026Article
- N-Terminal Actin-Binding Site of Lmod2 Promotes Controlled Pointed End Elongation.Circulation research · 2026Article
- The cardiac phospho-proteome during pressure overload in mice.Scientific data · 2025Article
- LMOD2 interaction with ACTC1 regulates myogenic differentiation.BMC genomics · 2025Article
- Prediction and biological significance of small changes in binding of leiomodin to tropomyosin.The Journal of general physiology · 2025Article
- Tropomodulin-Tropomyosin Interplay Modulates Interaction Between Cardiac Myosin and Thin Filaments.Biomolecules · 2025Article
- Interaction of cardiac leiomodin with the native cardiac thin filament.PLoS biology · 2025Article
- Developmental nicotine exposure alters cardiovascular structure and function in neonatal and juvenile rats.American journal of physiology. Heart and circulatory physiology · 2024Article
- Dilated cardiomyopathy-associated skeletal muscle actin (ACTA1) mutation R256H disrupts actin structure and function and causes cardiomyocyte hypocontractility.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Leiomodin 2 neonatal dilated cardiomyopathy mutation results in altered actin gene signatures and cardiomyocyte dysfunction.NPJ Regenerative medicine · 2024Article
- Human disease-causing mutations result in loss of leiomodin 2 through nonsense-mediated mRNA decay.PLoS genetics · 2024Article
- Lmod2 is necessary for effective skeletal muscle contraction.Science advances · 2024Article
- Recessive TMOD1 mutation causes childhood cardiomyopathy.Communications biology · 2024Article
- A nemaline myopathy-linked mutation inhibits the actin-regulatory functions of tropomodulin and leiomodin.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Article
- LMOD2-related dilated cardiomyopathy presenting in late infancy.American journal of medical genetics. Part A · 2022Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
Leiomodin-2 (Lmod2) is a striated muscle-specific actin binding protein that is implicated in assembly of thin filaments. The necessity of Lmod2 in the adult mouse and role it plays in the mechanics of contraction are unknown. To answer these questions, we generated cardiac-specific conditional Lmod2 knockout mice (cKO). These mice die within a week of induction of the knockout with severe left ventricular systolic dysfunction and little change in cardiac morphology. Cardiac trabeculae isolated from cKO mice have a significant decrease in maximum force production and a blunting of myofilament length-dependent activation. Thin filaments are non-uniform and substantially reduced in length in cKO hearts, affecting the functional overlap of the thick and thin filaments. Remarkably, we also found that Lmod2 levels are directly linked to thin filament length and cardiac function in vivo, with a low amount (<20%) of Lmod2 necessary to maintain cardiac function. Thus, Lmod2 plays an essential role in maintaining proper cardiac thin filament length in adult mice, which in turn is necessary for proper generation of contractile force. Dysregulation of thin filament length in the absence of Lmod2 contributes to heart failure.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.