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© A-M. Pais-Correia, M-I. Thoulouze, A. Alcover, A. Gessain
Mise en évidence de structures de type "biofilm ", formées par le rétrovirus HTLV-1 générés par des cellules infectées (cellules du haut), qui ont été transmis à un autre lymphocyte (cellule du bas). Micrographie en microscopie électronique à balayage. Image colorisée.
Publication : Virology

Molecular epidemiology of the HHV-8 K1 gene from Moroccan patients with Kaposi’s sarcoma

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Virology - 21 Jun 2006

Duprez R, Hbid O, Afonso P, Quach H, Belloul L, Fajali N, Ismaili N, Benomar H, Hassane Tahri E, Huerre M, Quintana-Murci L, Gessain A

Link to Pubmed [PMID] – 16793109

Virology 2006 Sep;353(1):121-32

The genetic variability of the human herpesvirus 8 (HHV-8) strains circulating in the populations living in the Maghreb region, an endemic area for HHV-8 and associated Kaposi’s sarcoma, remains largely unknown. We have thus analyzed the genetic variation of the complete K1 gene of HHV-8 in a series of 35 viral strains, originating from 28 Moroccan patients with classic, AIDS-associated or iatrogenic Kaposi’s sarcoma lesions. All but one of the 35 strains belonged to the large C molecular subtype. Furthermore, high genetic diversity within the C subtype was observed in the 35 sequenced HHV-8 K1 genes, with strains belonging to several and distinct subgroups highly supported from a phylogenetically viewpoint (e.g., C3, C7, C” and C5). Considering these newly identified Moroccan viral strains in the context of 189 complete K1 genes, we were able to characterized, using the Simplot program, two main groups of recombinant chimeric K1 genes, either intertypic (C5) or intratypic (C7). In addition, the genetic characterization of the host maternal gene pool, through the analyses of mtDNA variation, did not provide evidence for any association between a particular human ethno-geographic background (i.e., North African vs. sub-Saharan African vs. West Eurasian linages) and any HHV-8 strain because both C’ and C” strains were randomly distributed among the different patients’ population backgrounds.

http://www.ncbi.nlm.nih.gov/pubmed/16793109