Related Experiment Video
Updated: May 17, 2026

Experimental Metastasis Assay
Published on: August 24, 2010
Ror2-Src signaling in metastasis of mouse melanoma cells is inhibited by NRAGE
Shan-Shan Lai1, Bin Xue, Yang Yang
1Jiangsu Key Laboratory for Molecular and Medical Biotechnology, Nanjing Normal University, and Medical School of Nanjing University, Nanjing, China.
Abstract:
The receptor tyrosine kinase (RTK) Ror2 plays important roles in developmental morphogenesis and mediates the filopodia formation in Wnt5a-induced cell migration. However, the function of Ror2 in noncanonical Wnt signaling resulting in cancer metastasis is largely unknown. Here, we show that Ror2 expression is higher in the highly metastatic murine B16-BL6 melanoma cells than in the low metastatic variant B16 cells. Overexpression of Ror2 increases the metastasis ability of B16 cells, and knockdown of Ror2 reduces the migration ability of B16-BL6 cells. Furthermore, the inhibition of Src kinase activity is critical for the Ror2-mediated cell migration upon Wnt5a treatment. The C-terminus of Ror2, which is deleted in brachydactyly type B (BDB), is essential for the mutual interaction with the SH1 domain of Src. Intriguingly, the Neurotrophin receptor-interacting MAGE homologue (NRAGE), which, as we previously reported, can remodel the cellular skeleton and inhibit cell-cell adhesion and metastasis of melanoma and pancreatic cancer, sharply blocks the interaction between Src and Ror2 and inhibits Ror2-mediated B16 cell migration by decreasing the activity of Src and focal adhesion kinase (FAK). Our data show that Ror2 is a potential factor in the tumorigenesis and metastasis in a Src-dependent manner that is negatively regulated by NRAGE.
Insights
Receptor tyrosine kinase Ror2 promotes melanoma metastasis via Src kinase signaling. Neurotrophin receptor-interacting MAGE homologue (NRAGE) inhibits this process, suggesting Ror2 and NRAGE as potential therapeutic targets for melanoma.
Area of Science:
- Oncology
- Cell Biology
- Molecular Biology
Background:
- Receptor tyrosine kinase (RTK) Ror2 is crucial for developmental processes and Wnt5a-induced cell migration.
- The role of Ror2 in noncanonical Wnt signaling and cancer metastasis remains largely unexplored.
Purpose of the Study:
- To investigate the function of Ror2 in melanoma metastasis.
- To elucidate the molecular mechanisms underlying Ror2-mediated cell migration and its regulation.
Main Methods:
- Comparative analysis of Ror2 expression in high and low metastatic melanoma cells.
- Manipulation of Ror2 expression (overexpression and knockdown) to assess its impact on metastasis and migration.
- Investigation of the interaction between Ror2, Src kinase, and NRAGE using biochemical assays.
Main Results:
- Ror2 expression is elevated in highly metastatic B16-BL6 melanoma cells.
- Ror2 overexpression enhances B16 cell metastasis, while Ror2 knockdown reduces B16-BL6 cell migration.
- Ror2-mediated cell migration is dependent on Src kinase activity and involves interaction with Src's SH1 domain.
- NRAGE inhibits Ror2-mediated migration by disrupting the Ror2-Src interaction and decreasing Src and focal adhesion kinase (FAK) activity.
Conclusions:
- Ror2 promotes melanoma tumorigenesis and metastasis through a Src-dependent pathway.
- NRAGE negatively regulates Ror2-mediated metastasis, highlighting a novel inhibitory mechanism.
- Ror2 and its interaction with Src, modulated by NRAGE, represent potential therapeutic targets for melanoma treatment.
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