Related Experiment Video
Updated: Mar 28, 2026
Intratibial Osteosarcoma Cell Injection to Generate Orthotopic Osteosarcoma and Lung Metastasis Mouse Models
Published on: October 28, 2021
CD151 knockdown inhibits osteosarcoma metastasis through the GSK-3β/β-catenin/MMP9 pathway
Zhiyu Zhang1, Feng Wang1, Qin Li2
1Department of Orthopaedics, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning 110032, P.R. China.
Abstract:
Osteosarcoma (OS) is a primary bone malignancy with a high early metastatic propensity. It is crucial to find specific protein targets to develop therapeutic strategies against this lethal disease. Tetraspanin CD151 is involved in facilitating tumor metastasis. However, the role and molecular mechanism of CD151 in promoting OS metastasis remain enigmatic. In the present study, we used small interfering RNA (siRNA) to inhibit CD151 expression in highly metastatic OS cells and the results demonstrated that CD151 knockdown inhibited their migration, invasion and metastasis. We further investigated the molecular mechanism of CD151 by inhibiting genes known to be involved in metastasis in OS cells and found that CD151 modulated matrix metalloproteinase 9 (MMP9) expression through the glycogen synthase kinase 3 (GSK-3β)/β-catenin signaling pathway. We conclude that CD151 knockdown inhibits the expression of MMP9 through the GSK-3β/β‑catenin pathway and also inhibits OS migration and invasion in vitro and metastasis in vivo in highly metastatic OS. This suggests that CD151 may be a useful antimetastatic target for OS.
Insights
Tetraspanin CD151 promotes osteosarcoma (OS) metastasis. Inhibiting CD151 reduces OS cell migration and invasion by downregulating matrix metalloproteinase 9 (MMP9) via the GSK-3β/β-catenin pathway, suggesting CD151 as a potential therapeutic target.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Metastasis Research
Background:
- Osteosarcoma (OS) is a primary bone cancer characterized by high metastatic potential.
- Identifying specific molecular targets is critical for developing effective therapeutic strategies against OS.
- Tetraspanin CD151 is implicated in tumor metastasis, but its precise role in OS metastasis is not fully understood.
Purpose of the Study:
- To investigate the role and molecular mechanism of CD151 in promoting osteosarcoma metastasis.
- To determine if CD151 knockdown affects OS cell migration, invasion, and metastasis.
- To elucidate the signaling pathway through which CD151 influences OS metastasis.
Main Methods:
- Utilized small interfering RNA (siRNA) to inhibit CD151 expression in highly metastatic OS cells.
- Assessed the effects of CD151 knockdown on cell migration, invasion, and metastasis in vitro and in vivo.
- Investigated the molecular mechanism by examining the modulation of matrix metalloproteinase 9 (MMP9) expression via the glycogen synthase kinase 3 (GSK-3β)/β-catenin signaling pathway.
Main Results:
- CD151 knockdown significantly inhibited the migration, invasion, and metastasis of highly metastatic OS cells.
- CD151 modulated MMP9 expression through the GSK-3β/β-catenin signaling pathway.
- Inhibition of CD151 reduced OS cell migration and invasion in vitro and metastasis in vivo.
Conclusions:
- CD151 knockdown inhibits osteosarcoma metastasis by downregulating MMP9 expression via the GSK-3β/β-catenin pathway.
- CD151 plays a crucial role in promoting OS migration, invasion, and metastasis.
- CD151 represents a potential antimetastatic therapeutic target for osteosarcoma.
