Identification of a promoter in position 56 within the long control region of human papillomavirus type 18

Identification of a promoter in position 56 within the long control region of human... The expression of the oncogenes E6 and E7 of the cervical cancer associated human papillomavirus type 18 was shown to be directed from the promoter in position 105 (P 105 ), which is reportedly the only early promoter located within the long control region (LCR). However, in C33A cells transiently transfected with a reporter construct containing the LCR of HPV18 in front of the luciferase gene a transcript initiating at position 56 was present in addition to those initiating from the P 105 . A perfect TATA Box consensus sequence 30 bp further upstream, which is highly conserved among HPVs associated with cervical cancer, was required for the activity of this novel promoter, denoted here as P 56 . The P 56 specific transcript obviously depends on promoter downstream sequences, since transcripts initiating from the P 56 were not present when the CAT gene was cloned downstream of the LCR. We detected transcripts initiating from both the P 105 and the P 56 in primary keratinocytes harboring episomal HPV18 as well as in the HPV18 positive cervical carcinoma cell lines HeLa, C4-1 and SW756. Our data suggest that in HPV18, the expression of the early viral proteins including the oncogenes might be directed from a second promoter, located within the LCR. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Identification of a promoter in position 56 within the long control region of human papillomavirus type 18

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Publisher
Springer-Verlag
Copyright
Copyright © 2001 by Springer-Verlag/Wien
Subject
Legacy
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s007050170021
Publisher site
See Article on Publisher Site

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