These results indicate that PRMT5 governs expression of prosurvival genes by promoting WNT/β-CATENIN and AKT/GSK3β proliferative signaling and that its inhibition induces lymphoma cell death, which warrants further clinical evaluation.
As a result, 19 (38%) of NK/T-cell lymphoma displayed nuclear β-catenin and 16 (32%) contained mutations in exon 3; while no mutations were detected in lymphomasnegative forβ-catenin nuclear staining (p<0.05).
Detection of phosphorylated TAK1 at T444 and T344 is associated with the presence of lymphoma in a set of 60 primary human samples correlating with NF-κB and β-catenin activation.
This study demonstrates a strong link between c-Cbl and overall survival of patients with CRC and provides new insights into a possible role of Tyr371 phosphorylation in Wnt/β-catenin regulation, which has important implications in tumor growth and angiogenesis in CRC.
Immunohistochemical analysis revealed beta-catenin deregulation in five primary cutaneous B-cell lymphomas (21%) and in 21 primary cutaneous T-cell lymphomas (42%) without nuclear accumulation suggesting that activation and accumulation of beta-catenin may play an important role in the development of skin lymphomas.
In this study, mutations of p53, c-kit, K-ras, and beta-catenin gene were analyzed in 17 cases (13 males and four females with ages ranging from 25 to 84 years) of such lymphomas by polymerase chain reaction-single strand conformation polymorphism followed by direct sequencing.