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Non-Canonical PRC1.1 is required for the activity of Menin-MLL1 Inhibitors in NUP98-Rearranged AML [CRISPR-Seq]

ABSTRACT: Non-Canonical PRC1.1 is required for the activity of Menin-MLL1 Inhibitors in NUP98-Rearranged AML [CRISPR-Seq]

PROVIDER: PRJNA1047910 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR27027879.fastq.gz	Fastqsanger.gz
	SRR27027880.fastq.gz	Fastqsanger.gz
	SRR27027881.fastq.gz	Fastqsanger.gz
	SRR27027882.fastq.gz	Fastqsanger.gz
	SRR27027883.fastq.gz	Fastqsanger.gz

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Non-Canonical PRC1.1 is required for the activity of Menin-MLL1 Inhibitors in NUP98-Rearranged AML [RNA-seq]

Project description:Translocations involving the Nucleoporin 98 (NUP98) gene predict a poor prognosis for patients with acute myeloid leukemia. These translocations generate NUP98-fusion proteins which interact with the mixed-lineage leukemia (MLL1/KMT2A) chromatin modifying enzyme and its binding partner Menin. The mechanisms by which the NUP98-fusion proteins maintain gene expression remain unclear. We demonstrate that the NUP98-fusion-Menin-KMT2A complex is essential for maintenance of H3K27Ac and active transcription at key loci such as Meis1 and the Hox cluster, among others. However, eviction of the complex from chromatin is insufficient to completely silence gene expression. Accumulation of the PRC1.1 complex and deposition of H2aK119Ub and H3K27Me3 is required to transition to a transcriptionally repressive chromatin state. Furthermore, we demonstrate that loss of PRC1.1 function leads to resistance to small molecule Menin inhibitors. Therefore, a critical function of the NUP98-fusion-Menin-KMT2A complex is to antagonize repressive chromatin complexes. These same mechanisms are critical for efficacy of newly developed therapeutics.

2024-09-16 | GSE274479 | GEO