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Chang KC, Rhodes CT, Zhang JQ, Moseley MC, Cardona SM, Huang SWA, Rawls A, Lemmon VP, Berger MS, Abate AR, Lin CHA. The chromatin repressors EZH2 and Suv4-20h coregulate cell fate specification during hippocampal development. FEBS Lett 2021; 596:294-308. [PMID: 34890048 DOI: 10.1002/1873-3468.14254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 11/09/2021] [Accepted: 11/29/2021] [Indexed: 11/09/2022]
Abstract
The cell fate transition from radial glial-like (RGL) cells to neurons and astrocytes is crucial for development and pathological conditions. Two chromatin repressors-the enhancer of zeste homolog 2 and suppressor of variegation 4-20 homolog-are expressed in RGL cells in the hippocampus, implicating these epigenetic regulators in hippocampal cell fate commitment. Using a double knockout mouse model, we demonstrated that loss of both chromatin repressors in the RGL population leads to deficits in hippocampal development. Single-nuclei RNA-Seq revealed differential gene expression and provided mechanistic insight into how the two chromatin repressors are critical for the maintenance of cycling cells in the dentate gyrus as well as the balance of cell trajectories between neuronal and astroglial lineages.
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Affiliation(s)
- Kai-Chun Chang
- Department of Bioengineering and Therapeutic Sciences, University of California at San Francisco, CA, USA
| | - Christopher T Rhodes
- Department of Biology, University of Texas at San Antonio, One UTSA Circle, TX, USA.,Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH/NICHD, Bethesda, MD, USA
| | - Jesse Q Zhang
- Department of Bioengineering and Therapeutic Sciences, University of California at San Francisco, CA, USA
| | - Madeleine C Moseley
- Department of Biology, University of Texas at San Antonio, One UTSA Circle, TX, USA
| | - Sandra M Cardona
- Department of Biology, University of Texas at San Antonio, One UTSA Circle, TX, USA
| | - Shu-Wei Angela Huang
- Department of Biology, University of Texas at San Antonio, One UTSA Circle, TX, USA
| | - Ashley Rawls
- Department of Biology, University of Texas at San Antonio, One UTSA Circle, TX, USA
| | - Vance P Lemmon
- The Miami Project to Cure Paralysis, University of Miami, FL, USA
| | - Mitchel S Berger
- Department of Neurological Surgery, University of California at San Francisco, CA, USA
| | - Adam R Abate
- Department of Bioengineering and Therapeutic Sciences, University of California at San Francisco, CA, USA
| | - Chin-Hsing Annie Lin
- Department of Biology, University of Texas at San Antonio, One UTSA Circle, TX, USA.,Department of Integrative Biology, University of Texas at San Antonio, One UTSA Circle, TX, USA.,Neuroscience Institute, University of Texas at San Antonio, TX, USA
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Abstract
The genome is dynamically organized in the nuclear space in a manner that reflects and influences nuclear functions. Developmental processes that govern the formation and maintenance of epigenetic memories are also tightly linked to adaptive changes in the physical and functional landscape of the nuclear architecture. Biological and biophysical principles governing the three-dimensional folding of chromatin are therefore central to our understanding of epigenetic regulation during adaptive responses and in complex diseases, such as cancer. Accumulating evidence points to the direction that global alterations in nuclear architecture and chromatin folding conspire with unstable epigenetic states of the primary chromatin fiber to drive the phenotypic plasticity of cancer cells.
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Affiliation(s)
- Anita Göndör
- Microbiology, Tumor and Cell Biology, Karolinska Institutet, Nobels väg 16, KI Solna Campus, Box 280, SE-171 77 Stockholm, Sweden.
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