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Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cancer+Discov 2015 ; 5 (3): 288-303 Nephropedia Template TP
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PRMT5 is required for lymphomagenesis triggered by multiple oncogenic drivers #MMPMID25582697
Li Y; Chitnis N; Nakagawa H; Kita Y; Natsugoe S; Yang Y; Li Z; Wasik M; Klein-Szanto AJP; Rustgi AK; Diehl JA
Cancer Discov 2015[Mar]; 5 (3): 288-303 PMID25582697show ga
Protein arginine transferase 5(PRMT5) has been implicated as a key modulator of lymphomagenesis. Whether PRMT5 has overt oncogenic function in the context of leukemia/lymphoma and whether it represents a therapeutic target remains to be established. We demonstrate that inactivation of PRMT5 inhibits colony-forming activity by multiple oncogenic-drivers including cyclin D1, c-MYC, NOTCH1 and MLL-AF9. Furthermore, we demonstrate that PRMT5 overexpression specifically cooperates with cyclin D1 to drive lymphomagenesis in a mouse model revealing inherent neoplastic activity. Molecular analysis of lymphomas, revealed that arginine methylation of p53 selectively suppresses expression of crucial proapoptotic and anti-proliferative target genes thereby sustaining tumor cell self-renewal and proliferation and bypassing the need for the acquisition of inactivating p53 mutations. Critically, analysis of human tumor specimen reveal a strong correlation between cyclin D1 overexpression and p53 methylation supporting the biomedical relevance of this pathway.