| Autor: |
Fabrice Prin, Shifeng Xue, Yvonne D. Krom, Benetti N, Matthew E. Ritchie, Andrew Keniry, Natasha Jansz, de Greef Jc, Bouwman Lf, Tamara Beck, den Hamer B, Hannah Vanyai, Kelan Chen, Timothy J. Mohun, Edwina McGlinn, Tapia del Fierro A, James M. Murphy, Kelsey Breslin, van der Hoorn D, Harald Oey, Marnie E. Blewitt, Alexandra D. Gurzau, Lucia Daxinger, van der Maarel Sm, Wanigasuriya I, Bruno Reversade, Nguyen Ly Tt |
| Rok vydání: |
2021 |
| Předmět: |
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| Popis: |
The interplay between 3D chromatin architecture and gene silencing is incompletely understood. Here, we report a novel point mutation in the non-canonical SMC protein SMCHD1 that enhances its silencing capacity at endogenous developmental targets and at the facioscapulohumeral muscular dystrophy associated macro-array, D4Z4. Heightened SMCHD1 silencing perturbs developmental Hox gene activation, causing a homeotic transformation in mice. Paradoxically, the mutant SMCHD1 appears to enhance insulation against another epigenetic regulator complex, PRC2, while depleting long range chromatin interactions akin to what is observed in the absence of SMCHD1. These data suggest that SMCHD1’s role in long range chromatin interactions is not directly linked to gene silencing or insulating the chromatin, refining the model for how the different levels of SMCHD1-mediated chromatin regulation interact to bring about gene silencing in normal development and disease. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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