Abstract
Hypoxanthine-guanine phosphoribosyltransferase (HGPRT)-deficient mutants of a bovine kidney cell line (MDBK) were selected following mutagenesis with ethylmethane sulfonate or ICR-170G. MDBK mutants were hybridized to thymidine kinase-deficient L cells and selected in HAT medium. Parental and hybrid cells were characterized for isozyme patterns of lactic dehydrogenase, malate dehydrogenase, glucose-6-phosphate dehydrogenase, and glutamate oxalate transaminase. Chromosomes of MDBK can be distinguished from mouse L cells by configuration and by fluorescent staining with Hoechst 33–258 stain. Hybrid cells contained both MDBK and L-cell chromosomes and had elevated DNA content. MDBK cells are normally restrictive for mengovirus replication. Both permissive and restrictive hybrids were found. Our data indicate that there was preferential loss of MDBK chromosomes in the hybrid cell lines.
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This work was supported by a grant from the Institute for General Medicine [GM18924 (M. W. T.)]. V. G. C. was a predoctoral fellow on Genetic Training Grant No. GM12 from the National Institute for General Medicine.
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Chinchar, V.G., Floyd, A.D., Chinchar, G.D. et al. Characterization of hybrids between bovine (MDBK) and mouse (L-cell) cell lines. Biochem Genet 17, 133–148 (1979). https://doi.org/10.1007/BF00484479
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DOI: https://doi.org/10.1007/BF00484479