| Autor: |
Salima Benbarche, Cécile K. Lopez, Eralda Salataj, Zakia Aid, Cécile Thirant, Marie-Charlotte Laiguillon, Séverine Lecourt, Yannis Belloucif, Camille Vaganay, Marion Antonini, Jiang Hu, Alexandra da Silva Babinet, Delphine Ndiaye-Lobry, Bryann Pardieu, Arnaud Petit, Alexandre Puissant, Julie Chaumeil, Thomas Mercher, Camille Lobry |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Science advances. 8(6) |
| ISSN: |
2375-2548 |
| Popis: |
Super Enhancers (SEs) are clusters of regulatory elements associated with cell identity and disease. However, whether these elements are induced by oncogenes and can regulate gene modules cooperating for cancer cell transformation or maintenance remains elusive. To address this question, we conducted a genome-wide CRISPRi-based screening of SEs in ETO2-GLIS2+acute megakaryoblastic leukemia. This approach revealed SEs essential for leukemic cell growth and survival that are induced by ETO2-GLIS2 expression. In particular, we identified a de novo SE specific of this leukemia subtype and regulating expression of tyrosine kinase–associated receptorsKITandPDGFRA. Combined expression of these two receptors was required for leukemic cell growth, and CRISPRi-mediated inhibition of this SE or treatment with tyrosine kinase inhibitors impaired progression of leukemia in vivo in patient-derived xenografts experiments. Our results show that fusion oncogenes, such as ETO2-GLIS2, can induce activation of SEs regulating essential gene modules synergizing for leukemia progression. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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