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2017 ; 13
(8
): 976-984
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The Overexpression of CARM1 Promotes Human Osteosarcoma Cell Proliferation
through the pGSK3?/?-Catenin/cyclinD1 Signaling Pathway
#MMPMID28924379
Li S
; Cheng D
; Zhu B
; Yang Q
Int J Biol Sci
2017[]; 13
(8
): 976-984
PMID28924379
show ga
Osteosarcoma (OS) is a kind of malignant bone tumor that occurs frequently in the
region surrounding the knee joint and poses a threat to the health of teenagers.
Since the application of chemotherapy to treat OS, 5-year survival rate in
patients has improved from 10% to 70%, but patient survival has not changed over
the past four decades. Coactivator-associated arginine methyltransferase 1
(CARM1) is a member of the PRMT protein family; it acts as an oncogene in many
cancers, but its function in OS is still unknown. In this study, we found that
CARM1 is overexpressed in OS and its expression is correlated with the Enneking
stage. CCK-8 and colony forming assays showed that proliferation in OS cell lines
was downregulated when siRNA was used to knockdown CARM1 expression. The cell
cycle was inhibited in S phase after si-CARM1 transfection in OS cell lines. An
antibody array indicated that Erk1/2 (Thr202/Tyr204), PARS40 (Thr246), and GSK3?
(Ser9) expression are affected by CARM1, and western blotting verified that CARM1
promotes OS cell proliferation via pGSK3?/?-catenin/cyclinD1 signaling.
Accordingly, CARM1 is a crucial gene in OS and is a potential new treatment
target.