WISP-1 increases MMP-2 expression and cell motility in human chondrosarcoma cells

Area of Science:

• Oncology
• Molecular Biology
• Cell Biology

Background:

• Chondrosarcoma is a malignant bone tumor known for local invasion and metastasis, frequently to the lungs.
• WISP-1 (a CCN family protein) role in chondrosarcoma cell migration remains largely uncharacterized.

Purpose of the Study:

• To investigate the effect of WISP-1 on human chondrosarcoma cell migration and underlying molecular mechanisms.

Main Methods:

• Utilized human chondrosarcoma cells (JJ012) and tissue samples.
• Assessed cell migration, MMP-2 expression, and signaling pathway activation (FAK, MEK, ERK, NF-κB).
• Employed specific inhibitors and antibodies, including α5β1 monoclonal antibody, MEK inhibitors (PD98059, U0126), and NF-κB inhibitors.

Main Results:

• WISP-1 significantly increased chondrosarcoma cell migration and MMP-2 expression.
• WISP-1 expression was elevated in chondrosarcoma tissues compared to normal cartilage.
• Inhibition of α5β1, MEK, ERK, or NF-κB pathways attenuated WISP-1-induced migration and MMP-2 upregulation.
• WISP-1 activated FAK, MEK, ERK phosphorylation and increased NF-κB activity and p65 binding to the MMP-2 promoter.

Conclusions:

• WISP-1 enhances chondrosarcoma cell migration by upregulating MMP-2 expression.
• The signaling cascade involves α5β1 integrin, FAK, MEK, ERK, and NF-κB pathways.
• WISP-1 represents a potential therapeutic target for mitigating chondrosarcoma metastasis.