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Malek Mohammadi M, Abouissa A, Heineke J. A surgical mouse model of neonatal pressure overload by transverse aortic constriction. Nat Protoc 2020; 16:775-790. [PMID: 33328612 DOI: 10.1038/s41596-020-00434-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 10/06/2020] [Indexed: 11/09/2022]
Abstract
Cardiac disease is the main cause of death worldwide. Insufficient regeneration of the adult mammalian heart is a major driver of cardiac morbidity and mortality. Cardiac regeneration occurs in early postnatal mice, thus understanding mechanisms of mammalian cardiac regeneration could facilitate the development of novel therapeutic strategies. Here, we provide a detailed description of a neonatal mouse model of pressure overload by transverse aortic constriction (nTAC) that can be applied at postnatal days 1 and 7. We have previously used this model to demonstrate that mice are able to fully adapt to pressure overload following nTAC on postnatal day 1. In contrast, when nTAC is applied in the non-regenerative phase (at postnatal day 7), it is associated with a maladaptive response similar to that seen when transverse aortic constriction (TAC) is applied to adult mice. Once a user is experienced in nTAC surgery, the procedure can be completed in less than 10 min per mouse. We anticipate that this model will facilitate the discovery of therapeutic targets to treat patients or prevent pressure overload-induced cardiac failure in the future.
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Affiliation(s)
- Mona Malek Mohammadi
- Department of Cardiovascular Physiology, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany. .,German Center for Cardiovascular Research (DZHK), partner site Heidelberg, Mannheim, Germany.
| | - Aya Abouissa
- Department of Cardiovascular Physiology, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,German Center for Cardiovascular Research (DZHK), partner site Heidelberg, Mannheim, Germany
| | - Joerg Heineke
- Department of Cardiovascular Physiology, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany. .,German Center for Cardiovascular Research (DZHK), partner site Heidelberg, Mannheim, Germany.
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Malek Mohammadi M, Abouissa A, Azizah I, Xie Y, Cordero J, Shirvani A, Gigina A, Engelhardt M, Trogisch FA, Geffers R, Dobreva G, Bauersachs J, Heineke J. Induction of cardiomyocyte proliferation and angiogenesis protects neonatal mice from pressure overload-associated maladaptation. JCI Insight 2019; 5:128336. [PMID: 31335322 DOI: 10.1172/jci.insight.128336] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Cardiac pressure overload (for example due to aortic stenosis) induces irreversible myocardial dysfunction, cardiomyocyte hypertrophy and interstitial fibrosis in patients. In contrast to adult, neonatal mice can efficiently regenerate the heart after injury in the first week after birth. To decipher whether insufficient cardiac regeneration contributes to the progression of pressure overload dependent disease, we established a transverse aortic constriction protocol in neonatal mice (nTAC). nTAC in the non-regenerative stage (at postnatal day P7) induced cardiac dysfunction, myocardial fibrosis and cardiomyocyte hypertrophy. In contrast, nTAC in the regenerative stage (at P1) largely prevented these maladaptive responses and was in particular associated with enhanced myocardial angiogenesis and increased cardiomyocyte proliferation, which both supported adaptation during nTAC. A comparative transcriptomic analysis between hearts after regenerative versus non-regenerative nTAC suggested the transcription factor GATA4 as master regulator of the regenerative gene-program. Indeed, cardiomyocyte specific deletion of GATA4 converted the regenerative nTAC into a non-regenerative, maladaptive response. Our new nTAC model can be used to identify mediators of adaptation during pressure overload and to discover novel potential therapeutic strategies.
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Affiliation(s)
- Mona Malek Mohammadi
- Department of Cardiovascular Research, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany.,German Center for Cardiovascular Research (DZHK) partner site Heidelberg/Mannheim, Heidelberg, Germany
| | - Aya Abouissa
- Department of Cardiovascular Research, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Isyatul Azizah
- Department of Cardiovascular Research, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Yinuo Xie
- Department of Cardiovascular Research, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Julio Cordero
- Department of Anatomy and Developmental Biology, Center for Biomedicine and Medical Technology Mannheim, European Center for Angioscience, and
| | - Amir Shirvani
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Anna Gigina
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Maren Engelhardt
- Institute for Neuroanatomy, Center for Biomedicine and Medical Technology Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Felix A Trogisch
- Department of Cardiovascular Research, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,German Center for Cardiovascular Research (DZHK) partner site Heidelberg/Mannheim, Heidelberg, Germany
| | - Robert Geffers
- Department Genome Analytics, Helmholtz-Center for Infection Research GmbH, Braunschweig, Germany
| | - Gergana Dobreva
- German Center for Cardiovascular Research (DZHK) partner site Heidelberg/Mannheim, Heidelberg, Germany.,Department of Anatomy and Developmental Biology, Center for Biomedicine and Medical Technology Mannheim, European Center for Angioscience, and
| | - Johann Bauersachs
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Joerg Heineke
- Department of Cardiovascular Research, European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany.,German Center for Cardiovascular Research (DZHK) partner site Heidelberg/Mannheim, Heidelberg, Germany
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