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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 : Retrovirology

Centrosome and retroviruses: the dangerous liaisons

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Retrovirology - 14 Apr 2007

Afonso PV, Zamborlini A, Saïb A, Mahieux R

Link to Pubmed [PMID] – 17433108

Retrovirology 2007;4:27

Centrosomes are the major microtubule organizing structures in vertebrate cells. They localize in close proximity to the nucleus for the duration of interphase and play major roles in numerous cell functions. Consequently, any deficiency in centrosome function or number may lead to genetic instability. Several viruses including retroviruses such as, Foamy Virus, HIV-1, JSRV, M-PMV and HTLV-1 have been shown to hamper centrosome functions for their own profit, but the outcomes are very different. Foamy viruses, HIV-1, JSRV, M-PMV and HTLV-1 use the cellular machinery to traffic towards the centrosome during early and/or late stages of the infection. In addition HIV-1 Vpr protein alters the cell-cycle regulation by hijacking centrosome functions. Enthrallingly, HTLV-1 Tax expression also targets the functions of the centrosome, and this event is correlated with centrosome amplification, aneuploidy and transformation.

http://www.ncbi.nlm.nih.gov/pubmed/17433108