Deletion of the PDZ motif of HPV16 E6 preventing immortalization and anchorage-independent growth in human tonsil epithelial cells

William Spanos, Jeremy Geiger, Mary E. Anderson, George F. Harris, Aaron D. Bossler, Russell B Smith, Aloysius J. Klingelhutz, John H. Lee

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Background. Human papillomavirus 16 (HPV16) has been associated with head and neck squamous cell carcinoma (HNSCC) in up to 60% of sampled specimens. Methods. To understand better the viral genes required to transform human tonsil epithelial cells (HTEC), we isolated HTECs and transduced them with retroviral vectors containing HPV16 E6 and E7. Results. Immortalization and anchorage-independent growth of HTECs only occurred with expression of E6 and E7 with resultant degradation of p53. However, cells expressing E6 lacking the PSD-95/disc-large/Zo-1 (PDZ) motif did not immortalize or grow anchorage independent. Telomerase activity and degradation of p53 were similar for wild-type and mutant E6. Conclusion. The mechanism of oncogenic transformation by E6 in HTECs is dependent on the PDZ binding motif. Identification of pathways affected by the interaction of E6 and PDZ domain containing proteins will further our understanding of how HPV causes HNSCC and will provide potential therapeutic targets.

Original languageEnglish (US)
Pages (from-to)139-147
Number of pages9
JournalHead and Neck
Volume30
Issue number2
DOIs
StatePublished - Feb 1 2008

Fingerprint

Human papillomavirus 16
Palatine Tonsil
Epithelial Cells
Viral Genes
Telomerase
Growth
Carcinoma, squamous cell of head and neck
Therapeutics
Protein Domains

Keywords

  • HPV
  • Immortalization
  • Invasion
  • PDZ motif
  • Squamous cell cancer
  • Tonsil epithelium

ASJC Scopus subject areas

  • Otorhinolaryngology

Cite this

Deletion of the PDZ motif of HPV16 E6 preventing immortalization and anchorage-independent growth in human tonsil epithelial cells. / Spanos, William; Geiger, Jeremy; Anderson, Mary E.; Harris, George F.; Bossler, Aaron D.; Smith, Russell B; Klingelhutz, Aloysius J.; Lee, John H.

In: Head and Neck, Vol. 30, No. 2, 01.02.2008, p. 139-147.

Research output: Contribution to journalArticle

Spanos, W, Geiger, J, Anderson, ME, Harris, GF, Bossler, AD, Smith, RB, Klingelhutz, AJ & Lee, JH 2008, 'Deletion of the PDZ motif of HPV16 E6 preventing immortalization and anchorage-independent growth in human tonsil epithelial cells', Head and Neck, vol. 30, no. 2, pp. 139-147. https://doi.org/10.1002/hed.20673
Spanos, William ; Geiger, Jeremy ; Anderson, Mary E. ; Harris, George F. ; Bossler, Aaron D. ; Smith, Russell B ; Klingelhutz, Aloysius J. ; Lee, John H. / Deletion of the PDZ motif of HPV16 E6 preventing immortalization and anchorage-independent growth in human tonsil epithelial cells. In: Head and Neck. 2008 ; Vol. 30, No. 2. pp. 139-147.
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