Preferred Label : HIV-I Nef in Apoptosis Pathway;
NCIt related terms : HIV-I Nef: negative effector of Fas and TNF;
Alternative definition : BIOCARTA: HIV infection leads to drastic declines in CD4 T helper cells, in part through
apoptosis of uninfected cells. Apoptosis of uninfected cells may be induced through
the expression of Fas ligand on the surface of HIV-infected cells, stimulating the
Fas-dependent apoptotic pathway in cells that come in contact with infected cells.
The NEF protein expressed by HIV may play a role in the inducing the expression of
Fas-ligand by infected cells. If this is the case, then a question that arises is
how infected cells themselves escape Fas-mediated apoptosis. The NEF protein appears
to play a role in this process as well. NEF interacts with the ASK1 kinase (apoptosis
signal-regulating kinase) involved in apoptotic signaling by TNF and Fas-ligand. Interaction
of NEF with ASK1 prevents phosphorylation of downstream MAP kinases and JNK kinases
involved in apoptotic signaling. (This definition may be outdated - see the DesignNote.);
NCIt note : The BIOCARTA Definition (ALT_DEFINITION) for this pathway concept was provided by
BioCarta. This property was not created by, nor is it maintained by the NCI Thesaurus
staff. Additionally, BioCarta is no longer updating its pathway data; thus, the BIOCARTA
Definition might be outdated or inaccurate. Please see the Terms and Conditions for
Use at http://www.biocarta.com/.;
Biocarta ID : h_HivnefPathway;
Origin ID : C39106;
UMLS CUI : C1512300;
Semantic type(s)
has_gene_product_element
pathway_has_gene_element