Establishment of high- and low-invasion clones derived for a human tongue squamous-cell carcinoma cell line SAS.
Distant-organ metastasis and regional lymph node metastasis are still the major cause of mortality of oral-cavity squamous-cell cancer (SCC). However, only a few studies have been undertaken to elucidate the mechanism of invasion and metastasis of oral SCC. In this study, we attempted to establish human oral SCC clones with different invasiveness, defined by endothelial cell monolayer assay, which can be used for the study of invasion and metastasis of oral SCC. We established five clones from the human oral SCC cell line SAS by a limiting-dilution method. Two distinct clones, SAS-L1 with very low invasive potential and SAS-H1 with very high invasive potential, were picked out by rat lung endothelial cell monolayer assay. The number of SAS-H1 that penetrated the rat lung endothelial cell monolayer was six fold higher than the number of SAS-L1. There were no differences of metalloproteinase production and cell adhesiveness to Matrigel of SAS-L1 and SAS-H1. However, SAS-H1 exhibited a higher migration ability than SAS-L1. This pair of clones would be a useful experimental model to help in the study of the invasiveness of human oral SCC.
Okumura
K
K
Department of Oral and Maxillofacial Surgery, School of Dentistry, Health Sciences University of Hokkaido, Japan.
Konishi
A
A
Tanaka
M
M
Kanazawa
M
M
Kogawa
K
K
Niitsu
Y
Y
D001485:Basement Membrane / Q000166:cytology; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D002448:Cell Adhesion; D002455:Cell Division; D002465:Cell Movement; D002999:Clone Cells; D003094:Collagen; D004338:Drug Combinations; D006801:Humans; D007797:Laminin; D008666:Metalloendopeptidases / Q000378:metabolism; D009361:Neoplasm Invasiveness; D010960:Plasminogen Activators / Q000378:metabolism; D011509:Proteoglycans; D014062:Tongue Neoplasms / Q000473:pathology*; D014407:Tumor Cells, Cultured
D004338:Drug Combinations; D007797:Laminin; D011509:Proteoglycans; C059485:matrigel; D003094:Collagen; D010960:Plasminogen Activators; D008666:Metalloendopeptidases