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Nguyen NUN, Canseco DC, Xiao F, Nakada Y, Li S, Lam NT, Muralidhar SA, Savla JJ, Hill JA, Le V, Zidan KA, El-Feky HW, Wang Z, Ahmed MS, Hubbi ME, Menendez-Montes I, Moon J, Ali SR, Le V, Villalobos E, Mohamed MS, Elhelaly WM, Thet S, Anene-Nzelu CG, Tan WLW, Foo RS, Meng X, Kanchwala M, Xing C, Roy J, Cyert MS, Rothermel BA, Sadek HA. A calcineurin-Hoxb13 axis regulates growth mode of mammalian cardiomyocytes. Nature 2020; 582:271-276. [PMID: 32499640 PMCID: PMC7670845 DOI: 10.1038/s41586-020-2228-6] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 02/24/2020] [Indexed: 11/08/2022]
Abstract
A major factor in the progression to heart failure in humans is the inability of the adult heart to repair itself after injury. We recently demonstrated that the early postnatal mammalian heart is capable of regeneration following injury through proliferation of preexisting cardiomyocytes1,2 and that Meis1, a three amino acid loop extension (TALE) family homeodomain transcription factor, translocates to cardiomyocyte nuclei shortly after birth and mediates postnatal cell cycle arrest3. Here we report that Hoxb13 acts as a cofactor of Meis1 in postnatal cardiomyocytes. Cardiomyocyte-specific deletion of Hoxb13 can extend the postnatal window of cardiomyocyte proliferation and reactivate the cardiomyocyte cell cycle in the adult heart. Moreover, adult Meis1-Hoxb13 double-knockout hearts display widespread cardiomyocyte mitosis, sarcomere disassembly and improved left ventricular systolic function following myocardial infarction, as demonstrated by echocardiography and magnetic resonance imaging. Chromatin immunoprecipitation with sequencing demonstrates that Meis1 and Hoxb13 act cooperatively to regulate cardiomyocyte maturation and cell cycle. Finally, we show that the calcium-activated protein phosphatase calcineurin dephosphorylates Hoxb13 at serine-204, resulting in its nuclear localization and cell cycle arrest. These results demonstrate that Meis1 and Hoxb13 act cooperatively to regulate cardiomyocyte maturation and proliferation and provide mechanistic insights into the link between hyperplastic and hypertrophic growth of cardiomyocytes.
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Affiliation(s)
- Ngoc Uyen Nhi Nguyen
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Diana C Canseco
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Feng Xiao
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Yuji Nakada
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Shujuan Li
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Nicholas T Lam
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Shalini A Muralidhar
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jainy J Savla
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Joseph A Hill
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Molecular Biology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Victor Le
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Kareem A Zidan
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Hamed W El-Feky
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Zhaoning Wang
- Center for Regenerative Science and Medicine, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Mahmoud Salama Ahmed
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Maimon E Hubbi
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ivan Menendez-Montes
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jesung Moon
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Shah R Ali
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Victoria Le
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Elisa Villalobos
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Magid S Mohamed
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Waleed M Elhelaly
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Suwannee Thet
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Chukwuemeka George Anene-Nzelu
- Cardiovascular Research Institute, National University of Singapore, Singapore, Singapore
- Genome Institute of Singapore, Singapore, Singapore
| | - Wilson Lek Wen Tan
- Cardiovascular Research Institute, National University of Singapore, Singapore, Singapore
- Genome Institute of Singapore, Singapore, Singapore
| | - Roger S Foo
- Cardiovascular Research Institute, National University of Singapore, Singapore, Singapore
- Genome Institute of Singapore, Singapore, Singapore
| | - Xun Meng
- The College of Life Sciences, Northwest University, Xi'an, China
| | - Mohammed Kanchwala
- Eugene McDermott Center for Human Growth and Development/Center for Human Genetics, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Chao Xing
- Eugene McDermott Center for Human Growth and Development/Center for Human Genetics, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jagoree Roy
- Department of Biology, Stanford University, Stanford, California, USA
| | - Martha S Cyert
- Department of Biology, Stanford University, Stanford, California, USA
| | - Beverly A Rothermel
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Hesham A Sadek
- Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, TX, USA.
- Department of Molecular Biology, The University of Texas Southwestern Medical Center, Dallas, TX, USA.
- Center for Regenerative Science and Medicine, The University of Texas Southwestern Medical Center, Dallas, TX, USA.
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