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Title: Intragenic HIV-1 env sequences that enhance Gag expression
Authors: Ornpreya Suptawiwat
Ruengpung Sutthent
Tun Hou Lee
Prasert Auewarakul
Mahidol University
Harvard School of Public Health
Keywords: Immunology and Microbiology
Issue Date: 25-Apr-2003
Citation: Virology. Vol.309, No.1 (2003), 1-9
Abstract: Expression of HIV-1 genes is regulated at multiple levels including the complex RNA splicing and transport mechanisms. Multiple cis-acting elements involved in these regulations have been previously identified in various regions of HIV-1 genome. Here we show that another cis-acting element was present in HIV-1 env region. This element enhanced the expression of Gag when inserted together with Rev response element (RRE) into a truncated HIV-1 genome in the presence of Rev. The enhancing activity was mapped to a 263-bp fragment in the gp41 region downstream to RRE. RNA analysis showed that it might function by promoting RNA stability and Rev-dependent RNA export. The enhancement was specific to Rev-dependent expression, since it did not enhance Gag expression driven by Sam68, a cellular protein that has been shown to be able to substitute for Rev in RNA export function. © 2003 Elsevier Science (USA). All rights reserved.
ISSN: 00426822
Appears in Collections:Scopus 2001-2005

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