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Mendez-Bermudez A, Giraud-Panis MJ, Ye J, Gilson E. Heterochromatin replication goes hand in hand with telomere protection. Nat Struct Mol Biol 2020; 27:313-318. [PMID: 32231287 DOI: 10.1038/s41594-020-0400-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 02/21/2020] [Indexed: 12/25/2022]
Abstract
Telomeres arose from the need to stabilize natural chromosome ends, resulting in terminal chromatin structures with specific protective functions. Their constituent proteins also execute general functions within heterochromatin, mediating late replication and facilitating fork progression. Emerging insights into the mechanisms governing heterochromatin replication suggest telomeres and heterochromatin act in concert during development and aging. They also suggest a common evolutionary origin for these two chromosome regions that arose during eukaryogenesis.
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Affiliation(s)
- Aaron Mendez-Bermudez
- School of Medicine, CNRS, INSERM, IRCAN, Université Côte d'Azur, Nice, France.,International Research Laboratory for Hematology, Cancer and Aging, Shanghai Ruijin Hospital, Shanghai Jiaotong University and Côte-d'Azur University, Shanghai, China
| | | | - Jing Ye
- International Research Laboratory for Hematology, Cancer and Aging, Shanghai Ruijin Hospital, Shanghai Jiaotong University and Côte-d'Azur University, Shanghai, China.
| | - Eric Gilson
- School of Medicine, CNRS, INSERM, IRCAN, Université Côte d'Azur, Nice, France. .,International Research Laboratory for Hematology, Cancer and Aging, Shanghai Ruijin Hospital, Shanghai Jiaotong University and Côte-d'Azur University, Shanghai, China. .,Department of Genetics, CHU Nice, Nice, France.
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