[Effects of triptolide on cell proliferation and regulation of Ras-MAPKs pathway in synoviocytes induced by tumor necrosis factor].
Λέξεις-κλειδιά
Αφηρημένη
OBJECTIVE
To investigate the effects of triptolide on proliferation and regulation of ras-MAPKs pathway in human fibroblast-like synoviocytes of rheumatoid arthritis (RA-HFLS) treated with tumor necrosis factor (TNF-alpha).
METHODS
RA-HFLS were cultured with TNF-alpha in the presence or absence of variable doses of triptolide (0.28, 2.8, 28, 140 nmol x L(-1)) in vitro. Cell proliferation was evaluated by MTS assay. The phosphorylation status of Ras-MAPKs-associated proteins (Ras, p-P38, p-ERK and p-JNK) were detected by Western blot analysis.
RESULTS
Triptolide could obviously decrease the RA-HFLS viability in a dose-dependent manner and the inhibition ratio was 0.28%, 5.05%, 30.83% and 43.77% respectively. In addition, triptolide could also suppressed the expression of Ras, p-P38, p-ERK and p-JNK.
CONCLUSIONS
Triptolide has an notable inhibiting effect on proliferation of RA-HFLS and the molecule mechanism is due in part to the direct suppression of abnormal activation of Ras-MAPKs pathway.
