Molecular cloning, analysis, and chromosomal localization of a mouse genomic sequence related to the human papillomavirus type 18 E5 region

Tomas Kahn, Holger Friesl, Neal G. Copeland, Debra J. Gilbert, Nancy A. Jenkins, Lutz Gissmann, Judith Kramer, Harald Zur Hausen

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The E5 open reading frame (ORF) from bovine papillomavirus type 1 (BPV 1) as well as the E5 ORFs from human papillomaviruses (HPV) type 6 and type 16 have been reported to transform immortalized rodent cells. In an analysis of murine and human tumors for the presence of putative papillomavirus-related sequences, we cloned amplified cellular sequences from the mouse cell line Eb that cross-hybridized with the E5 ORF of HPV 18. A 2.1-kb fragment termed HC1 was sequenced. In normal murine cells, it was present as a single-copy genomic sequence located on chromosome 8. A region of 213 nucleotides corresponded to the E5 gene (HC1 E5), based on the best alignments and on the presence of direct and inverted repeats bearing a central sequence motif. These structural elements are also present in the HPV 18 E5 ORF. HC1 E5 contained an ORF that was transcribed bidirectionally. The transcription in the E5 direction was enhanced in RNA obtained from organs and tumors from carcinogen-treated animals and C127 cells. The polypeptide deduced from the sequence was related to E5 proteins from genital papillomaviruses, to the putative product of the Q300 mouse gene, and to several viral and human growth factors. The data suggest that there may be several cellular counterpart to the viral E5 proteins.

Original languageEnglish (US)
Pages (from-to)88-99
Number of pages12
JournalMolecular Carcinogenesis
Volume6
Issue number2
DOIs
StatePublished - Jan 1 1992

Keywords

  • Dimethylbenz[a]anthracene
  • DNA amplification
  • Mapping
  • RNA overexpression
  • Skin tumors

ASJC Scopus subject areas

  • Cancer Research
  • Molecular Biology

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