© 1984 Oxford University Press
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Inhibition of Intercellular Communication in Cultures of Chinese Hamster V79 Cells by 2,4-Dichlorophenoxyacetic Acid and 2,4,5-Trichlorophenoxyacetic Acid1
Department of Pediatrics and Human Development, Division of Human Genetics, Genetic Toxicology, Endocrinology, and Oncology, Michigan State University East Lansing, Michigan 48824-1317
Inhibition of Intercellular Communication in Cultures of Chinese Hamster V79 Cells by 2,4-Dicfalorophenoxyacctic Acid and 2,4,5-Trichlorophenoxyacetic Acid. RUBINSTEIN, C, JONE, C, TROSKO, J. E., AND CHANG, C. C. (1984). Fundam. Appt. Toxicol. 4, 731–739. Using the Chinese hamster V79 in vitro cell system designed to measure intercellular communication, 2,4-dichlorophenoxyacetic acid (2,4-D), 2,4,5-trichlorophenoxyacetic acid (2,4,5-T), and several mixtures of these compounds were tested for their ability to inhibit this biological process. The ability of these chemicals to inhibit colony-forming ability of these cells was tested prior to the studies to measure intercellular communication. 2,4-D was less cytotoxic than 2,4,5-T. Both 2,4,5-T and 2,4-D were able to inhibit intercellular communication at their respective noncytotoxic dose ranges. Various mixtures of both chemicals were also able to inhibit intercellular communication, snowing some kind of addititvity. No-effect levels were also noted in the intercellular communication assay. These results were interpreted as being consistent with the hypothesis that these compounds might be teratogenic by their ability to inhibit intercellular communication during development