title: Enhanced chemotaxis of tumor-derived and virus-transformed cells to fibronectin and fibroblast-conditioned medium.
abstract: SV40 transformants of human embryo fibroblasts showed an enhanced chemotactic response to fibronectin and conditioned medium of fibroblasts in comparison to the non-transformed cells. An even higher chemotactic response was characteristic for a malignant human fibrosarcoma cell line, whereas cells derived from low-grade malignant dermatofibrosarcoma showed a normal response in the Boyden chamber assay. The high stimulation of chemotaxis is paralleled by a reduced synthesis and an altered deposition of fibronectin in the pericellular matrix of these cells. Both high chemotactic response and lack of deposition of fibronectin may play a role in tissue invasion and formation of metastasis by malignant tumors.
mesh_terms: D002472:Cell Transformation, Viral; D002633:Chemotaxis; D003470:Culture Media; D005347:Fibroblasts / Q000502:physiology; D005353:Fibronectins / Q000494:pharmacology*; D006801:Humans; D009362:Neoplasm Metastasis; D009369:Neoplasms / Q000473:pathology*
chemical_list: D003470:Culture Media; D005353:Fibronectins