The MLL-Menin interaction is a molecular dependency in NUP98-rearranged AML [RNA-Seq]
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ABSTRACT:
ORGANISM(S): Mus musculus Homo sapiens
PROVIDER: GSE175596 | GEO | 2022/06/01
REPOSITORIES: GEO
Similar Datasets
Project description:Using mouse and human models of NUP98-rearrranged leukemia, we demonstrate that inhibition of MLL-Menin impairs leukemogenic gene expression and disrupts chromatin binding of MLL1 and NUP98 fusion proteins at a critical subset of genes that is essential for sustaining the undifferentiated leukemia phenotype.
2022-06-01 | GSE175595 | GEO
Project description:Using mouse and human models of NUP98-rearrranged leukemia, we demonstrate that inhibition of MLL-Menin impairs leukemogenic gene expression and disrupts chromatin binding of MLL1 and NUP98 fusion proteins at a critical subset of genes that is essential for sustaining the undifferentiated leukemia phenotype.
2022-06-01 | GSE175594 | GEO
Project description:Chromosomal translocations involving the nucleoporin 98 (NUP98) gene at chromosome 11p15 are found in pediatric and adult Acute Myeloid Leukemia (AML) patients, representing one of the most common genetic alterations in pediatric AMLs found in ~10% of these patients. Previous studies demonstrated that NUP98 fusion proteins interact with MLL1 (Mixed Lineage Leukemia 1 also known as KMT2A) protein complex, and colocalize with MLL1 on Hoxa/b cluster genes, supporting MLL1 as a molecular dependency in the NUP98-r leukemia. Importantly, recent work has validated an important role of the scaffold protein menin, which directly interacts with the N-terminus of MLL1, in the NUP98-r leukemia. Here, we explored the effect of combining our menin inhibitor MI-3454 with CDK6 or FLT3 kinase inhibitors in the NUP98-r leukemia models as a possible way to enhance the anti-leukemic effect.
2024-10-30 | GSE246783 | GEO
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 | GSE249217 | GEO
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 | GSE249215 | GEO
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 | GSE249216 | GEO
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 | GSE249214 | GEO
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
Project description:MLL1 translocations encode fusion proteins retaining the N-terminus of MLL1, which interacts with the tumor suppressor, menin. This interaction is essential for leukemogenesis, thus is a promising drug target. However, wild-type MLL1 plays a critical role in sustaining hematopoietic stem cells (HSCs), therefore disruption of an essential MLL1 cofactor would be expected to obliterate normal hematopoiesis. Here we show that rather than working together as a complex, menin and MLL1 regulate distinct pathways during normal hematopoiesis, particularly in HSCs and B-cells. We demonstrate the lack of genetic interaction between menin and MLL1 in steady-state or regenerative hematopoiesis and in B-cell differentiation despite the fact that MLL1 is critical for these processes. In B-cells, menin- or MLL1-regulated genes can be classified into three categories: 1) a relatively small group of co-regulated genes including previously described targets Hoxa9 and Meis1 but also Mecom and Eya1, and much larger groups of 2) exclusively menin-regulated and 3) exclusively MLL1-regulated genes. Our results highlight the large degree of independence of these two proteins and demonstrate that menin is not a requisite cofactor for MLL1 during normal hematopoiesis. Furthermore, our data support the development of menin-MLL1 disrupting drugs as safe and selective leukemia targeting agents. We performed gene expression analysis to determine the genes deregulated in B-cell progenitors upon loss of menin. Fraction B pro-B cells (defined as B220+CD43+HSA+BP-1- BM cells) were sorted from four MenF/F and four Rag1-cre;MenF/F mice of three weeks old. Total RNA was amplified once, labeled, fragmented and hybridized to Affymerix GeneChip Mouse Genome 430 2.0 array.
2013-08-05 | E-GEOD-49120 | biostudies-arrayexpress
Project description:To investigate the effect of Menin inhibitor on patient-derived NUP98-r AML. We treated primary AML cells with Menin inhibitor in a Mesenchymal stem cell co-Culture platform. Then we charachterized global gene expression in treated AML cells upon treatment in two different time points, day7 and day12.
2023-05-14 | GSE232091 | GEO