Methylation of eukaryotic elongation factor 2 induced by basic fibroblast growth factor via mitogen-activated protein kinase.
10.3858/emm.2011.43.10.061
- Author:
Gyung Ah JUNG
1
;
Bong Shik SHIN
;
Yeon Sue JANG
;
Jae Bum SOHN
;
Seon Rang WOO
;
Jung Eun KIM
;
Go CHOI
;
Kyung Mi LEE
;
Bon Hong MIN
;
Kee Ho LEE
;
Gil Hong PARK
Author Information
1. Department of Biochemistry, BK 21 Program, College of Medicine, Korea University, Seoul 136-705, Korea. ghpark@korea.ac.kr
- Publication Type:Original Article
- Keywords:
cyclin-dependent kinase inhibitor p21;
fibroblast growth factor 2;
mitogen-activated protein kinases;
N,N-dimethylarginine;
peptide elongation factor 2;
protein-arginine N-methyltransfe
- MeSH:
Animals;
Arginine;
Cell Dedifferentiation;
Cyclin-Dependent Kinase Inhibitor p21/genetics/metabolism;
Elongation Factor 2 Kinase/*metabolism;
Fibroblast Growth Factor 2/*metabolism;
Fibroblasts/*metabolism/pathology;
Flavonoids/pharmacology;
MAP Kinase Signaling System/drug effects/genetics;
Methylation;
Mice;
Mitogen-Activated Protein Kinases/antagonists & inhibitors;
Myofibroblasts/pathology;
NIH 3T3 Cells;
Protein Methyltransferases/*metabolism;
Protein-Arginine N-Methyltransferases/*metabolism;
RNA, Small Interfering/genetics
- From:Experimental & Molecular Medicine
2011;43(10):550-560
- CountryRepublic of Korea
- Language:English
-
Abstract:
Protein arginine methylation is important for a variety of cellular processes including transcriptional regulation, mRNA splicing, DNA repair, nuclear/cytoplasmic shuttling and various signal transduction pathways. However, the role of arginine methylation in protein biosynthesis and the extracellular signals that control arginine methylation are not fully understood. Basic fibroblast growth factor (bFGF) has been identified as a potent stimulator of myofibroblast dedifferentiation into fibroblasts. We demonstrated that symmetric arginine dimethylation of eukaryotic elongation factor 2 (eEF2) is induced by bFGF without the change in the expression level of eEF2 in mouse embryo fibroblast NIH3T3 cells. The eEF2 methylation is preceded by ras-raf-mitogen-activated protein kinase kinase (MEK)-extracellular signal-regulated kinase (ERK1/2)-p21(Cip/WAF1) activation, and suppressed by the mitogen-activated protein kinase (MAPK) inhibitor PD98059 and p21(Cip/WAF1) short interfering RNA (siRNA). We determined that protein arginine methyltransferase 7 (PRMT7) is responsible for the methylation, and that PRMT5 acts as a coordinator. Collectively, we demonstrated that eEF2, a key factor involved in protein translational elongation is symmetrically arginine-methylated in a reversible manner, being regulated by bFGF through MAPK signaling pathway.
