In vivo screening characterizes chromatin factor functions during normal and malignant hematopoiesis
© 2023. The Author(s)..
Cellular differentiation requires extensive alterations in chromatin structure and function, which is elicited by the coordinated action of chromatin and transcription factors. By contrast with transcription factors, the roles of chromatin factors in differentiation have not been systematically characterized. Here, we combine bulk ex vivo and single-cell in vivo CRISPR screens to characterize the role of chromatin factor families in hematopoiesis. We uncover marked lineage specificities for 142 chromatin factors, revealing functional diversity among related chromatin factors (i.e. barrier-to-autointegration factor subcomplexes) as well as shared roles for unrelated repressive complexes that restrain excessive myeloid differentiation. Using epigenetic profiling, we identify functional interactions between lineage-determining transcription factors and several chromatin factors that explain their lineage dependencies. Studying chromatin factor functions in leukemia, we show that leukemia cells engage homeostatic chromatin factor functions to block differentiation, generating specific chromatin factor-transcription factor interactions that might be therapeutically targeted. Together, our work elucidates the lineage-determining properties of chromatin factors across normal and malignant hematopoiesis.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:55 |
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| Enthalten in: |
Nature genetics - 55(2023), 9 vom: 14. Sept., Seite 1542-1554 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Lara-Astiaso, David [VerfasserIn] |
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| Links: |
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| Themen: |
Chromatin |
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| Anmerkungen: |
Date Completed 11.09.2023 Date Revised 06.03.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1038/s41588-023-01471-2 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a © 2023. The Author(s). | ||
| 520 | |a Cellular differentiation requires extensive alterations in chromatin structure and function, which is elicited by the coordinated action of chromatin and transcription factors. By contrast with transcription factors, the roles of chromatin factors in differentiation have not been systematically characterized. Here, we combine bulk ex vivo and single-cell in vivo CRISPR screens to characterize the role of chromatin factor families in hematopoiesis. We uncover marked lineage specificities for 142 chromatin factors, revealing functional diversity among related chromatin factors (i.e. barrier-to-autointegration factor subcomplexes) as well as shared roles for unrelated repressive complexes that restrain excessive myeloid differentiation. Using epigenetic profiling, we identify functional interactions between lineage-determining transcription factors and several chromatin factors that explain their lineage dependencies. Studying chromatin factor functions in leukemia, we show that leukemia cells engage homeostatic chromatin factor functions to block differentiation, generating specific chromatin factor-transcription factor interactions that might be therapeutically targeted. Together, our work elucidates the lineage-determining properties of chromatin factors across normal and malignant hematopoiesis | ||
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| 700 | 1 | |a Narayan, Nisha |e verfasserin |4 aut | |
| 700 | 1 | |a Del Valle, Cynthia |e verfasserin |4 aut | |
| 700 | 1 | |a Gross, Torsten |e verfasserin |4 aut | |
| 700 | 1 | |a Giotopoulos, George |e verfasserin |4 aut | |
| 700 | 1 | |a Beinortas, Tumas |e verfasserin |4 aut | |
| 700 | 1 | |a Navarro-Alonso, Mar |e verfasserin |4 aut | |
| 700 | 1 | |a Aguado-Alvaro, Laura Pilar |e verfasserin |4 aut | |
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| 700 | 1 | |a Calvo, Isabel A |e verfasserin |4 aut | |
| 700 | 1 | |a Lopez, Cecile K |e verfasserin |4 aut | |
| 700 | 1 | |a Alignani, Diego |e verfasserin |4 aut | |
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| 700 | 1 | |a Huntly, Brian J P |e verfasserin |4 aut | |
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