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Cell adhesion molecules and cancer metastasis
1Research Institute for Wakan-yaku, Toyama Medical and Pharmaceutical University, Japan.
Japanese Journal of Pharmacology
|January 20, 1998
Summary
Synthetic polypeptides targeting tumor cell adhesion, like those with Arg-Gly-Asp (RGD) sequences, effectively inhibit metastasis. This anti-adhesion therapy, combined with chemotherapy or immune stimulation via adhesion molecules, offers a promising strategy for cancer metastasis control.
Area of Science:
- Oncology
- Cell Biology
- Immunology
Background:
- Tumor cell adhesion is critical for metastasis.
- Understanding metastasis mechanisms can guide antimetastatic therapy development.
Purpose of the Study:
- To investigate the role of cell adhesion in metastasis.
- To evaluate synthetic polypeptides and adhesion molecules as antimetastatic agents.
Main Methods:
- Used synthetic/recombinant Arg-Gly-Asp (RGD) polypeptides (poly(RGD), CH-271).
- Administered polypeptides in experimental and spontaneous metastasis models (B16-BL6 melanoma).
- Investigated combined therapy with chemotherapy and B7-1 adhesion molecule transfection.
Main Results:
- Poly(RGD) effectively inhibited lung and liver metastasis.
- Repeated polypeptide administration reduced spontaneous metastasis and prolonged survival.
- Combined anti-adhesion therapy and chemotherapy showed marked inhibition of metastasis.
- B7-1 transfected tumor cells exhibited reduced lung metastasis and acted as a tumor vaccine.
Conclusions:
- Regulating tumor cell adhesive interactions is a promising approach for cancer metastasis control.
- Anti-adhesion therapy, alone or combined, can inhibit metastasis.
- Modulating cell adhesion molecules can induce anti-tumor immune responses, preventing metastasis.