Skip to Main content Skip to Navigation
Theses

Rôle du Polyomavirus de Merkel dans les carcinomes à cellules de Merkel

Abstract : Nucleotidic sequences defining the genome of a new virus, the Merkel Cell Polyomavirus, has been discovered in 2008 in Merkel cell carcinoma, a rare form of cutaneous cancer developing mostly in immunosupressed individuals. Whereas this new virus belongs to the Polyomaviridae family, which includes known oncogenic viruses in animals, it was the first study consistently implicating a Polyomavirus in human cancer. Because scientific arguments were only based on a ten-case-single report, the primary goal of our work was to confirm the role of the Merkel Cell Polyomavirus in Merkel Cell Carcinoma.Our work demonstrated that Merkel Cell Polyomavirus DNA was indeed present in three quarters of Merkel Cell Carcinoma cases, but also that Merkel Cell Polyomavirus was a near ubiquitous virus infecting various tissues among healthy individuals. Nonetheless, viral DNA is chronically detected in various tissues from Merkel Cell Carcinoma cases, which harbour elevated seric titters of specific antibodies. Those facts suggest that Merkel Cell Polyomavirus develop an active and chronic infection that could favour genomic mutation and integration events specifically associated to Merkel Cell Carcinoma. Those modifications, inducing both expression of truncated viral oncoproteins and abolishment of cell lysis mediated by viral replication, may support cell transformation.
Document type :
Theses
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-00801219
Contributor : Abes Star :  Contact
Submitted on : Friday, March 15, 2013 - 12:37:20 PM
Last modification on : Thursday, September 24, 2020 - 3:22:59 AM
Long-term archiving on: : Sunday, June 16, 2013 - 6:05:09 AM

File

va_laude_helene.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-00801219, version 1

Citation

Hélène Laude. Rôle du Polyomavirus de Merkel dans les carcinomes à cellules de Merkel. Médecine humaine et pathologie. Université René Descartes - Paris V, 2012. Français. ⟨NNT : 2012PA05T065⟩. ⟨tel-00801219⟩

Share

Metrics

Record views

1476

Files downloads

3319