The effects of interleukin-1β in modulating osteoclast-conditioned medium’s influence on gelatinases in chondrocytes through mitogen-activated protein kinases
Jing Xie , Na Fu , Lin-Yi Cai , Tao Gong , Guo Li , Qiang Peng , Xiao-Xiao Cai
International Journal of Oral Science ›› 2015, Vol. 7 ›› Issue (4) : 220 -231.
The effects of interleukin-1β in modulating osteoclast-conditioned medium’s influence on gelatinases in chondrocytes through mitogen-activated protein kinases
Signaling molecules released by bone-resorbing cells (osteoclasts) can regulate the activity of the gelatinase enzyme in cartilage. Xiao-Xiao Cai and co-workers at Sichuan University in China explored the hypothesis that cartilage metabolism might be controlled by signals from bone cells. They found that the protein interleukin-1β (IL-1β) in the fluid around osteoclasts increased the activity of gelatinase in mouse cartilage cells in tissue culture. Changes in gelatinase activity have previously been implicated in diseases that involve disruption of cartilage metabolism, including osteoarthritis. The researchers also found that IL-1βs effect on gelatinase activity was mediated through pathways involving regulatory proteins known as mitogen-activated protein kinases. These insights will help in understanding the role of gelatinase in the maintenance of cartilage in both health and disease.
chondrocyte / gelatinases / interleukin-1β / matrix crosstalk / osteoarthritis / osteoclast
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