title: Deletion in the L1 open reading frame of human papillomavirus type 6a genomes associated with recurrent laryngeal papilloma.
abstract: Human papillomavirus (HPV) type 6a genomes with a large deletion in their L1 open reading frames (ORF) were found in two of five recurrent cases of laryngeal papilloma. One of these mutant HPVs had a 186 base pair (bp) deletion near the N-terminus end of the L1 ORF, which encodes a major capsid protein. The other had a 454 bp deletion at the C-terminus end of L1 at which is located a nuclear localising signal (NLS). No other large deletion or insertion was found in the remaining regions of all five HPV6a genomes. The laryngeal papillomas which harboured the mutant viruses showed typical hyperplasia and pathological changes as observed in tumours induced by the wild-type virus. The biological significance of the two large deletions in the late region of HPV6a associated with laryngeal papilloma is discussed.
authors.affiliation: Department of Microbiology, School of Medicine, Chiba University, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Suzuki
authors.forename: Y
authors.initials: Y
authors.lastname: Tomita
authors.forename: K
authors.initials: K
authors.lastname: Nakano
authors.forename: H
authors.initials: H
authors.lastname: Shirasawa
authors.forename: B
authors.initials: B
authors.lastname: Simizu
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D036022:Capsid Proteins; D002675:Child, Preschool; D004279:DNA, Viral; D005260:Female; D016679:Genome, Viral; D006801:Humans; D007822:Laryngeal Neoplasms / Q000473:pathology / Q000821:virology*; D008297:Male; D008875:Middle Aged; D008969:Molecular Sequence Data; D009364:Neoplasm Recurrence, Local; D009856:Oncogene Proteins, Viral / Q000235:genetics*; D016366:Open Reading Frames; D010212:Papilloma / Q000473:pathology / Q000821:virology*; D027383:Papillomaviridae / Q000235:genetics*; D030361:Papillomavirus Infections / Q000821:virology*; D017384:Sequence Deletion; D014412:Tumor Virus Infections / Q000821:virology*; D014764:Viral Proteins
chemical_list: D036022:Capsid Proteins; D004279:DNA, Viral; D009856:Oncogene Proteins, Viral; D014764:Viral Proteins; C091560:L1 protein, Human papillomavirus type 6