TY - JOUR
T1 - Methylation of cottontail rabbit papillomavirus DNA and tissue-specific expression in transgenic rabbits
AU - Peng, Xuwen
AU - Max Lang, C.
AU - Kreider, John W.
N1 - Funding Information:
manuscript. This work was supported by NIH grants CA-27503, AI-82687 and RR-00469, and The Jake Gittlen Memorial Golf Tournament.
PY - 1995/1
Y1 - 1995/1
N2 - Transgenic rabbits carrying multiple copies of CRPV genomic DNA were described previously (Peng et al. (1993) J. Virol. 67, 1698-1701). CRPV DNA was detectable in all tissues of the transgenic rabbits, howeverm the transcripts of CRPV genes only were found in skin and skin tumors. Tumor development was also restricted to skin. To study the mechanism involving tissue-specific expression of CRPV genes in rabbits, cellular DNAs, isolated from different normal tissues and skin tumors, were digested with the two isoschizomeric restriction endonucleases Msp I (methylation resistant) and Hpa II (methylation sensitive), respectively, and analyzed by Southern blot. CRPV DNA, especially its upstream regulatory region (URR), was extensively methylated in all normal tissues, but methylation was remarkably reduced in skin tumors. These data suggest that extensive methylation of CRPV genome, especially in the URR, might be a factor in controlling its tissue-specific expression.
AB - Transgenic rabbits carrying multiple copies of CRPV genomic DNA were described previously (Peng et al. (1993) J. Virol. 67, 1698-1701). CRPV DNA was detectable in all tissues of the transgenic rabbits, howeverm the transcripts of CRPV genes only were found in skin and skin tumors. Tumor development was also restricted to skin. To study the mechanism involving tissue-specific expression of CRPV genes in rabbits, cellular DNAs, isolated from different normal tissues and skin tumors, were digested with the two isoschizomeric restriction endonucleases Msp I (methylation resistant) and Hpa II (methylation sensitive), respectively, and analyzed by Southern blot. CRPV DNA, especially its upstream regulatory region (URR), was extensively methylated in all normal tissues, but methylation was remarkably reduced in skin tumors. These data suggest that extensive methylation of CRPV genome, especially in the URR, might be a factor in controlling its tissue-specific expression.
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U2 - 10.1016/0168-1702(94)00080-V
DO - 10.1016/0168-1702(94)00080-V
M3 - Article
C2 - 7538718
AN - SCOPUS:0028804510
SN - 0168-1702
VL - 35
SP - 101
EP - 108
JO - Virus Research
JF - Virus Research
IS - 1
ER -
