Division of Genetics & Genomics

Choudhury Laboratory

Genomics and the Human Heart

MOLECULAR MECHANISMS

Cellular fusion is a significant driver of cardiomyocyte polyploidization.

axon regeneration and function recovery after CNS injury

Congenital heart disease is the most common birth defect and is often associated with heart failure. Conventional heart failure medications are not effective in these patients. Regenerative strategies have the potential for improving this situation. Our recent finding indicates that polyploidization creates a mechanistic barrier to heart regeneration. Our lab is working on deciphering the mechanism of the generation of polyploid cardiomyocytes. By utilising non-inherited somatic mutations record as a “endogenous barcode” and, we are studying the clonal structure of polyploid cardiomyocytes regeneration.

Related Publications

Lamin B2 Levels Regulate Polyploidization of Cardiomyocyte Nuclei and Myocardial Regeneration.
Dev Cell. 2020 04 06; 53(1):42-59.e11. View abstract

Control of cytokinesis by β-adrenergic receptors indicates an approach for regulating cardiomyocyte endowment.
Liu H, Zhang CH, Ammanamanchi N, Suresh S, Lewarchik C, Rao K, Uys GM, Han L, Abrial M, Yimlamai D, Ganapathy B, Guillermier C, Chen N, Khaladkar M, Spaethling J, Eberwine JH, Kim J, Walsh S, Choudhury S, Little K, Francis K, Sharma M, Viegas M, Bais A, Kostka D, Ding J, Bar-Joseph Z, Wu Y, Yechoor V, Moulik M, Johnson J, Weinberg J, Reyes-Múgica M, Steinhauser ML, Kühn B. Sci Transl Med. 2019 Oct 9;11(513):eaaw6419. doi: 10.1126/scitranslmed.aaw6419. PMID: 31597755 View abstract

Neuregulin stimulation of cardiomyocyte regeneration in mice and human myocardium reveals a therapeutic window.
Brian D Polizzotti, Balakrishnan Ganapathy, Stuart Walsh, Sangita Choudhury, Niyatie Ammanamanchi, David G Bennett, Cristobal G dos Remedios, Bernhard J Haubner, Josef M Penninger, Bernhard Kühn.
Sci Transl Med. 2015 Apr 1;7(281):281ra45. doi: 10.1126/scitranslmed.aaa5171.
View abstract