Implicated Role of Liposarcoma Related Fusion Oncoprotein TLS-CHOP in the Dysregulation of Arginine-Specific Methylation through PRMT1
Kenta Fujimoto,
Shigeki Arai,
Maki Matsubara,
Kun Du,
Yasuto Araki,
Akio Matsushita,
Riki Kurokawa
Issue:
Volume 1, Issue 2, July 2013
Pages:
18-23
Received:
3 October 2013
Published:
10 December 2013
Abstract: Chromosomal translocation product, TLS-CHOP (Translocated in liposarcoma-CCAAT/enhancer binding protein homologous protein, also named as FUS-DDIT3), has been thought to be a primary cause of myxoid liposarcoma, but the precise molecular function of TLS-CHOP for oncogenesis still remains to be elucidated. Previously we demonstrated that TLS/FUS interacts with protein arginine methyltransferase 1 (PRMT1), and carboxyl-terminal region of TLS is dimethylated by PRMT1. However, it has been uncovered whether TLS-CHOP function is regulated by PRMT1, and is methylated. Here we indicate that TLS-CHOP is not associated with PRMT1 and less methylated even though TLS-CHOP still possesses several potential arginine methylation sites of TLS. Moreover, we established a stable cell line expressing TLS-CHOP as a model system for studying the molecular function of TLS-CHOP. The TLS-CHOP expressing 293T cells exhibited slight growth retardation and decreased level of integrin 51 protein, a fibronectin receptor. It would be possible that the expression of oncoprotein TLS-CHOP might dysregulate arginine-specific methylation elicited via PRMT1 interacting with methylated TLS.
Abstract: Chromosomal translocation product, TLS-CHOP (Translocated in liposarcoma-CCAAT/enhancer binding protein homologous protein, also named as FUS-DDIT3), has been thought to be a primary cause of myxoid liposarcoma, but the precise molecular function of TLS-CHOP for oncogenesis still remains to be elucidated. Previously we demonstrated that TLS/FUS int...
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