兰克尔
破骨细胞
CCL7型
骨吸收
癌症研究
MAPK/ERK通路
趋化因子
NF-κB
细胞生物学
激活剂(遗传学)
炎症
信号转导
药理学
内科学
医学
免疫学
趋化因子受体
生物
受体
作者
Ke Gan,Lei‐Lei Yang,Lingxiao Xu,Xiaoke Feng,Zhang Qian-de,Fang Wang,Wenfeng Tan,Miaojia Zhang
标识
DOI:10.1016/j.intimp.2016.03.038
摘要
Abstract Introduction Iguratimod (T-614) has been confirmed as a highly efficacious and safe novel disease-modifying anti-rheumatic drug (DMARD) for rheumatoid arthritis therapy in China and Japan due to its potent anti-inflammation effect. Here, we investigate the effects of Iguratimod on osteoclast differentiation, migration and function. Methods The effect of Iguratimod on osteoclastogenesis, migration and bone resorption were assessed by TRAP staining, transwell migration assay and osteologic discs, respectively. Relative expressions of osteoclastic related genes, chemokines and transcription factors were assessed by reverse transcription polymerase chain reaction (RT-PCR) and signaling pathways were analyzed by western blotting. Results Iguratimod significantly inhibits osteoclast differentiation, migration and bone resorption in RANKL-induced RAW264.7 cell in a dose-dependent manner. The expressions of osteoclastic related genes including TRAP, CTSK and CTR were increased in RAW264.7 cell upon RANKL stimulation but were obviously suppressed in the presence of Iguratimod. RANKL induced the expression of chemokines including CCL7, CCL4 and CCL12 and osteoclastic related transcription factors of c-Fos, c-Jun and NFATc1 could be significantly inhibited by Iguratimod in a dose dependent manner. Western blotting indicated Iguratimod could suppress the activation of MAPKs and NF-κB pathway in RANKL induced osteoclastogenesis in RAW264.7. Conclusions These findings revealed a directly inhibitory role of Iguratimod on osteoclast formation and function, which is distinct from previous report, suggesting Iguratimod provide a unique therapeutic strategy for RA and especially in light of preventing bone destruction.
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