Linked Life Data

15033690

Source:http://linkedlifedata.com/resource/pubmed/id/15033690

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2004-3-22
pubmed:abstractText
The envelope glycoprotein complex (Env), encoded by the human immunodeficiency virus (HIV-1), kills uninfected cells expressing CD4 and/or the chemokine receptor CXCR4 or CCR5, via at least three independent mechanisms. First, the soluble Env product gp120 can induce the apoptotic cell death of lymphocytes, neurons, and myocardiocytes, via interaction with surface receptors. Second, Env present on the surface of HIV-1 infected cells can transiently interact with cells expressing CD4 and CXCR4/CCR5, thereby provoking a hemifusion event that results in the death of the uninfected cell. Third, the interaction between Env on infected cells and its receptors on uninfected cells can result in syncytium formation. Such syncytia undergo apoptosis after a phase of latency. In several models of Env-induced apoptosis, early signs of mitochondrial membrane permeabilization (MMP) become manifest. Such signs include a loss of the mitochondrial transmembrane potential and the release of cytochrome c and AIF. The mechanisms of Env-triggered apoptotic MMP may involve an elevation of cytosolic Ca(2+), reactive oxygen species and/or the transcriptional activation of p53, with the consequent expression of pro-apoptotic proteins such as Bax, which permeabilizes mitochondrial membranes. The implications of these findings for the pathophysiology of HIV-1 infection is discussed.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0077-8923
pubmed:author
pubmed:issnType
Print
pubmed:volume
1010
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
19-28
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Mitochondrial apoptosis induced by the HIV-1 envelope.
pubmed:affiliation
Centre National de la Recherche Scientifique, UMR 8125, Institut Gustave Roussy, F-94805 Villejuif, France.
pubmed:publicationType
Journal Article, Review, Research Support, Non-U.S. Gov't