title: Chromosome breakage and neoplastic transformation of Syrian golden hamster embryonic cells in tissue culture by transplacental application of 2-(2-furyl)-3-(5-nitro-2-furyl)acrylamide (AF-2).
abstract: Hamster embryos were treated with 2-(2-furyl)-3-(5-nitro-2-furyl)acrylamide (AF-2) in vivo (in the mother) by transplacental application. The fetuses were isolated 24 h after administration of the AF-2 and cultured. Within the first 24h of primary culture, some parts of the cells were treated with colcemide for 3 h so that mitotic cells could be observed in the first cell cycle in vitro. Cultured embryonic fibroblasts in metaphase plates showed a marked dose-dependence in chromosomal aberrations. Transplacental application of AF-2 also caused slightly dose-dependent morphological transformation. When some transformed colonies were cloned and transferred to the hamster cheek pouch, these cells produced tumors in the host animals. This new in vivo--in vitro combination assay system is considered  to be useful for detection of environmental potential carcinogens.
mesh_terms: D000818:Animals; D002273:Carcinogens; D002471:Cell Transformation, Neoplastic; D002478:Cells, Cultured; D002869:Chromosome Aberrations; D002875:Chromosomes / Q000187:drug effects*; D006224:Cricetinae; D004622:Embryo, Mammalian; D005260:Female; D005668:Furylfuramide / Q000008:administration & dosage / Q000494:pharmacology*; D008431:Maternal-Fetal Exchange; D009581:Nitrofurans / Q000494:pharmacology*; D011247:Pregnancy
chemical_list: D002273:Carcinogens; D009581:Nitrofurans; D005668:Furylfuramide