401. Chemical cocarcinogenesis with the use of a subclone derived from Balb/3T3 cells with catechol as cocarcinogen.
- Author
-
Atchison M, Chu C, Kakunaga T, and Van Duuren BL
- Subjects
- Animals, Benzopyrenes, Cell Line, Clone Cells, Colony-Forming Units Assay, Dose-Response Relationship, Drug, Mice, Mice, Inbred BALB C, Propiolactone, Catechols toxicity, Cell Transformation, Neoplastic chemically induced, Cocarcinogenesis
- Abstract
This study was performed for the detection of cocarcinogens by transformation in vitro with the use of a subclone of a Balb/3T3 cell line. Dose response, cytotoxicity, and transformation studies were done with the use of an indirect-acting carcinogen, benzo[a]pyrene (B[a]P), a direct-acting alkylating carcinogen, beta-propiolactone (BPL), and the mouse skin cocarcinogen catechol. The rate of transformation was notably higher in groups treated with B[a]P and catechol or BPL and catechol than in groups treated with either B[a]P or BPL. Catechol alone did not induce any transformation. All the cells isolated from the transformed foci showed characteristics of malignantly transformed cells, such as anchorage-independent growth. Thus chemical cocarcinogenesis was accomplished in vitro similar to that accomplished in in vivo studies reported earlier on mouse skin.
- Published
- 1982