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PRMT5 Promotes Progression of Chronic Lymphocytic Leukemia

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus Homo sapiens

PROVIDER: GSE183432 | GEO | 2022/12/07

REPOSITORIES: GEO

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PRMT5 Promotes Progression of Chronic Lymphocytic Leukemia

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PRMT5 Promotes Progression of Chronic Lymphocytic Leukemia [3_vs_6_mo_RNA-Seq]

Project description:Purpose: Richter’s Transformation (RT) is a poorly understood and often fatal progression of chronic lymphocytic leukemia (CLL) manifesting histologically as diffuse large B-cell lymphoma. PRMT5 is implicated in lymphomagenesis, but its role in CLL or RT progression is unknown. We demonstrate herein that tumors uniformly overexpress PRMT5 in patients with progression to RT. Furthermore, mice with B-specific overexpression of hPRMT5 developed a B-lymphoid expansion with increased risk of death, and Eµ-PRMT5/TCL1 double transgenic mice uniformly developed a highly aggressive disease that histologically resembles RT; where large-scale transcriptional profiling identified unique oncogenic pathways that mediate PRMT5-driven disease progression. Taken together, the discovery that PRMT5 drives oncogenic pathways promoting RT provides a compelling rationale for clinical investigation of PRMT5 inhibitors such as PRT382 in aggressive CLL/RT cases

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Dysregulation of PRMT5 in chronic lymphocytic leukemia promotes progression with high risk of Richter's transformation.

Project description:Richter's Transformation (RT) is a poorly understood and fatal progression of chronic lymphocytic leukemia (CLL) manifesting histologically as diffuse large B-cell lymphoma. Protein arginine methyltransferase 5 (PRMT5) is implicated in lymphomagenesis, but its role in CLL or RT progression is unknown. We demonstrate herein that tumors uniformly overexpress PRMT5 in patients with progression to RT. Furthermore, mice with B-specific overexpression of hPRMT5 develop a B-lymphoid expansion with increased risk of death, and Eµ-PRMT5/TCL1 double transgenic mice develop a highly aggressive disease with transformation that histologically resembles RT; where large-scale transcriptional profiling identifies oncogenic pathways mediating PRMT5-driven disease progression. Lastly, we report the development of a SAM-competitive PRMT5 inhibitor, PRT382, with exclusive selectivity and optimal in vitro and in vivo activity compared to available PRMT5 inhibitors. Taken together, the discovery that PRMT5 drives oncogenic pathways promoting RT provides a compelling rationale for clinical investigation of PRMT5 inhibitors such as PRT382 in aggressive CLL/RT cases.

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Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

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