Abstract
We compare a fluorescent in situ hybridization technique, usingN-acetoxy-2-acetylaminofluorene (N-ACO-AAF) modified DNA adducts, with3H-labeled DNA in situ hybridization for (1) visualizing human transgenomes in HRAS1-selected, chromosome-mediated gene transfer (CMGT), and (2) mapping chromosomal SV40 in an SV40-transformed, human-mouse hybrid cell line. We demonstrate that individual HRAS1-CMGTs may contain multiple fragments of human chromatin. We deduce that the CMGT process can involve interstitial loss of mouse chromatin. We conclude that the N-ACO-AAF technique gives finer resolution than3H-labeled in situ hybridization. However,3H-labeling is more sensitive and has allowed us to sublocalize SV40 in Cl21 to the region 7q31–35.
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Mitchell, A.R., Ambros, P., Gosden, J.R. et al. Gene mapping and physical arrangements of human chromatin in transformed, hybrid cells: Fluorescent and autoradiographic in situ hybridization compared. Somat Cell Mol Genet 12, 313–324 (1986). https://doi.org/10.1007/BF01570725
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DOI: https://doi.org/10.1007/BF01570725