Modes of Human T Cell Leukemia Virus Type 1 Transmission, Replication and Persistence

Autor: Alexandre Carpentier, Pierre-Yves Barez, Malik Hamaidia, Hélène Gazon, Alix de Brogniez, Srikanth Perike, Nicolas Gillet, Luc Willems
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Viruses, Vol 7, Iss 7, Pp 3603-3624 (2015)
Druh dokumentu: article
ISSN: 1999-4915
DOI: 10.3390/v7072793
Popis: Human T-cell leukemia virus type 1 (HTLV-1) is a retrovirus that causes cancer (Adult T cell Leukemia, ATL) and a spectrum of inflammatory diseases (mainly HTLV-associated myelopathy—tropical spastic paraparesis, HAM/TSP). Since virions are particularly unstable, HTLV-1 transmission primarily occurs by transfer of a cell carrying an integrated provirus. After transcription, the viral genomic RNA undergoes reverse transcription and integration into the chromosomal DNA of a cell from the newly infected host. The virus then replicates by either one of two modes: (i) an infectious cycle by virus budding and infection of new targets and (ii) mitotic division of cells harboring an integrated provirus. HTLV-1 replication initiates a series of mechanisms in the host including antiviral immunity and checkpoint control of cell proliferation. HTLV-1 has elaborated strategies to counteract these defense mechanisms allowing continuous persistence in humans.
Databáze: Directory of Open Access Journals