English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A central feature of osteoarthritis (OA) is the loss of articular cartilage, which is primarily attributed to cartilage breakdown. A group of metalloproteinases termed the A disintegrin and metalloproteinase with thrombospondin motifs (ADAMTS) family are reported to be important in cartilage breakdown. Recent studies have suggested that ADAMTS‑4 is a major contributor to the pathogenesis of OA and that syndecan‑1 is closely associated with activation of ADAMTS‑4 in human chondrocytes. Accumulating evidence also suggests that cannabinoids have chondroprotective effects. The current study explored the effects of synthetic cannabinoid WIN‑55,212‑2 mesylate (WIN‑55) on the expression of syndecan‑1 and ADAMTS‑4, as well as ADAMTS‑4 activity, in unstimulated and interleukin (IL)‑1β‑stimulated OA chondrocytes. Primary human OA articular chondrocytes were treated with WIN‑55 in the presence or absence of IL‑1β and cannabinoid receptor antagonists. The results of the present study demonstrated that WIN‑55 inhibited ADAMTS‑4 activity in unstimulated and IL‑1β‑stimulated primary human OA articular chondrocytes in a concentration‑dependent manner. Cannabinoid receptor type 1 (CB1) and 2 (CB2) were constitutively expressed in human OA articular chondrocytes. Furthermore, selective CB2 antagonist, JTE907, but not selective CB1 antagonist, MJ15, abolished the inhibitory effect of WIN‑55 on ADAMTS‑4 activity. WIN55 inhibited the expression of syndecan‑1 but not ADAMTS‑4, and overexpression of syndecan‑1 reversed the inhibitory effect of WIN‑55 on the ADAMTS‑4 activity in unstimulated and IL‑1β‑stimulated human OA articular chondrocytes. Despite having no significant effect on syndecan‑1 gene promoter activity, WIN‑55 markedly decreased the stability of syndecan‑1 mRNA via CB2. In conclusion, to the best of our knowledge, the present study provides the first in vitro evidence supporting that the synthetic cannabinoid WIN‑55 inhibits ADAMTS‑4 activity in unstimulated and IL‑1β‑stimulated human OA articular chondrocytes by decreasing the mRNA stability/expression of syndecan‑1 via CB2. This suggests a novel mechanism by which cannabinoids may prevent cartilage breakdown in OA. In addition, it also provides novel insights into the pharmacological effects of synthetic cannabinoids on OA.

Cannabinoid WIN-55,212-2 mesylate inhibits ADAMTS-4 activity in human osteoarthritic articular chondrocytes by inhibiting expression of syndecan-1