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Abou Abdallah F, Abdel Massih C, Attieh C, Chebly A. The impact of mosaic loss of the Y chromosome (mLOY) in men of advanced age. Biogerontology 2024:10.1007/s10522-024-10133-7. [PMID: 39223433 DOI: 10.1007/s10522-024-10133-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Accepted: 08/23/2024] [Indexed: 09/04/2024]
Abstract
The Y chromosome has long been considered to be a "genetic wasteland" harboring only few genes essentially involved in male sex development and spermatogenesis. However, the discovery of mosaic loss of the Y chromosome (mLOY) in older men has led to revisiting of the potential impact of the Y chromosome on health and the pathophysiological processes of multiple diseases such as cancer, Alzheimer's disease and cardiovascular disease. Hence, developing more sensitive techniques for the detection of mLOY has become an emergent concern. In this article, we present a comprehensive review of the literature regarding mLOY. Additionally, we discuss the emerging discoveries concerning mLOY as well as the underlying mechanisms promoting disease in men of advanced age.
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Affiliation(s)
| | | | - Charbel Attieh
- Center Jacques Loiselet for Medical Genetics and Genomics (CGGM), Faculty of Medicine, Saint Joseph University of Beirut, Beirut, Lebanon
| | - Alain Chebly
- Faculty of Medicine, Saint Joseph University of Beirut, Beirut, Lebanon.
- Center Jacques Loiselet for Medical Genetics and Genomics (CGGM), Faculty of Medicine, Saint Joseph University of Beirut, Beirut, Lebanon.
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Horitani K, Chavkin NW, Arai Y, Wang Y, Ogawa H, Yura Y, Evans MA, Cochran JD, Thel MC, Polizio AH, Sano M, Miura-Yura E, Arai Y, Doviak H, Arnold AP, Gelfand BD, Hirschi KK, Sano S, Walsh K. Disruption of the Uty epigenetic regulator locus in hematopoietic cells phenocopies the profibrotic attributes of Y chromosome loss in heart failure. NATURE CARDIOVASCULAR RESEARCH 2024; 3:343-355. [PMID: 39183958 PMCID: PMC11343478 DOI: 10.1038/s44161-024-00441-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 01/31/2024] [Indexed: 08/27/2024]
Abstract
Heart failure affects millions of people worldwide, with men exhibiting a higher incidence than women. Our previous work has shown that mosaic loss of the Y chromosome (LOY) in leukocytes is causally associated with an increased risk for heart failure. Here, we show that LOY macrophages from the failing hearts of humans with dilated cardiomyopathy exhibit widespread changes in gene expression that correlate with cardiac fibroblast activation. Moreover, we identify the ubiquitously transcribed t et ratricopeptide Y-linked (Uty) gene in leukocytes as a causal locus for an accelerated progression of heart failure in male mice with LOY. We demonstrate that Uty disruption leads to epigenetic alterations in both monocytes and macrophages, increasing the propensity of differentiation into profibrotic macrophages. Treatment with a transforming growth factor-β-neutralizing antibody prevented the cardiac pathology associated with Uty deficiency in leukocytes. These findings shed light on the mechanisms that contribute to the higher incidence of heart failure in men.
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Affiliation(s)
- Keita Horitani
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
- Present address: Department of Medicine II, Kansai Medical University, Osaka, Japan
- These authors contributed equally: Keita Horitani, Nicholas W. Chavkin, Soichi Sano
| | - Nicholas W. Chavkin
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, VA, USA
- These authors contributed equally: Keita Horitani, Nicholas W. Chavkin, Soichi Sano
| | - Yohei Arai
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Ying Wang
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
- Present address: Department of Cardiology, Second Affiliated Hospital of Army Medical University, Chongqing, China
| | - Hayato Ogawa
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
- Present address: Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoshimitsu Yura
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
- Present address: Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Megan A. Evans
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Jesse D. Cochran
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
- Medical Scientist Training Program, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Mark C. Thel
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Ariel H. Polizio
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Miho Sano
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Emiri Miura-Yura
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
- Present address: Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Yuka Arai
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Heather Doviak
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Arthur P. Arnold
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Bradley D. Gelfand
- Ophthalmology, Biomedical Engineering, Center for Advanced Vision Science (CAVS), University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Karen K. Hirschi
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Soichi Sano
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
- Laboratory of Cardiovascular Mosaicism, National Cerebral and Cardiovascular Center, Osaka, Japan
- These authors contributed equally: Keita Horitani, Nicholas W. Chavkin, Soichi Sano
| | - Kenneth Walsh
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
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