Abstract
It has been shown by genetic complementation analysis that a mitomycin C-sensitive mutant (V-H4) of Chinese hamster V79 cells is the first rodent equivalent of Fanconi anemia (FA) group A. The V-H4 mutant shows many typical characteristics of cells derived from FA patients. V-H4 cells exhibit increased sensitivity towards cross-linking agents as MMC (∼30-fold), cis-DDP (∼10-fold), DEB (∼10-fold), and PUVA (∼1.6-fold), but an only slightly increased sensitivity to monofunctional alkylating agents (EMS and MMS) and actinomycin D. V-H4 cells are also moderately sensitive to adriamycin (1.6-fold), and not sensitive to H2O2. The levels of chromosomal aberrations induced by MMC and cis-DDP treatment are higher (4- to 6-fold) in V-H4 cells than in the wild-type V79 cells. Genetic complementation analysis with other Chinese hamster mutants hypersensitive to MMC (irs1, irs1SF, UV20 and UV41) indicates clearly that V-H4 belongs to a different, new complementation group. This unique mutant is very stable and can serve as a vehicle to isolate the complementing FA-A gene from normal human DNA.
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Zdzienicka, M.Z., Arwert, F., Neuteboom, I. et al. The Chinese hamster V79 cell mutant V-H4 is phenotypically like Fanconi anemia cells. Somat Cell Mol Genet 16, 575–581 (1990). https://doi.org/10.1007/BF01233098
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DOI: https://doi.org/10.1007/BF01233098