Korean J Gynecol Oncol Colposc.  1996 Dec;7(4):298-307.

Mechanisms of HPV-16-induced Transformation in Human Epithelial Cells in Culture

• Lee HS
• Yang JH
• Park IS

Abstract

Human epithelial cell line immortalized by Ad12-SV40 hybrid virus was transfected with plasmid containing HPV-16 via calcium-phosphate method. Subsequently, 8 clonal cell lines were obtained after G418 selection. Among these clonal cells, clonal cell-4(C-4) and clonal cell-6(G-6) showed increases of tumorigenic cellular properties such as saturation density, soft agar colony formation and cell aggregation. Morphological alteration such as appearane of foci was observed on these two clones after passage 6 and 7(50 to 55 days after transfection). When clonal cells and control cells were treated with MNNG(0.01ug/ml), both C-4 and C-6 showed increases of tumorigenic cellular properties and the level of increase was much more elevated as compared to clonal cells prior to MNNG treatment. Appearance of foci formation was observed in C-4 and C-6 after passage-6. After passage-8, control cells and all clonal cells showed morphological alterations. It seems that treatment of cells containing HPV-16 DNA with MNNG increases tumorigenic properties of the cells and expedite morphological transformations. (continue)

MeSH Terms

Agar
Cell Aggregation
Cell Line
Clone Cells
DNA
Epithelial Cells*
Human papillomavirus 16
Humans*
Methylnitronitrosoguanidine
Plasmids
Agar
DNA
Methylnitronitrosoguanidine