| pubmed-article:18030346 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:18030346 | lifeskim:mentions | umls-concept:C0019704 | lld:lifeskim |
| pubmed-article:18030346 | lifeskim:mentions | umls-concept:C0557351 | lld:lifeskim |
| pubmed-article:18030346 | lifeskim:mentions | umls-concept:C0034790 | lld:lifeskim |
| pubmed-article:18030346 | lifeskim:mentions | umls-concept:C0001271 | lld:lifeskim |
| pubmed-article:18030346 | lifeskim:mentions | umls-concept:C0475264 | lld:lifeskim |
| pubmed-article:18030346 | lifeskim:mentions | umls-concept:C0205263 | lld:lifeskim |
| pubmed-article:18030346 | lifeskim:mentions | umls-concept:C0441712 | lld:lifeskim |
| pubmed-article:18030346 | pubmed:issue | 11 | lld:pubmed |
| pubmed-article:18030346 | pubmed:dateCreated | 2007-11-21 | lld:pubmed |
| pubmed-article:18030346 | pubmed:abstractText | The Nef protein acts as critical factor during HIV pathogenesis by increasing HIV replication in vivo via the modulation of host cell vesicle transport and signal transduction processes. Recent studies suggested that Nef alters formation and function of immunological synapses (IS), thereby modulating exogenous T-cell receptor (TCR) stimulation to balance between partial T cell activation required for HIV-1 spread and prevention of activation induced cell death. Alterations of IS function by Nef include interference with cell spreading and actin polymerization upon TCR engagement, a pronounced intracellular accumulation of the Src kinase Lck and its reduced IS recruitment. Here we use a combination of Nef mutagenesis and pharmacological inhibition to analyze the relative contribution of these effects to Nef mediated alterations of IS organization and function on TCR stimulatory surfaces. Inhibition of actin polymerization and IS recruitment of Lck were governed by identical Nef determinants and correlated well with Nef's association with Pak2 kinase activity. In contrast, Nef mediated Lck endosomal accumulation was separable from these effects, occurred independently of Pak2, required integrity of the microtubule rather than the actin filament system and thus represents a distinct Nef activity. Finally, reduction of TCR signal transmission by Nef was linked to altered actin remodeling and Lck IS recruitment but did not require endosomal Lck rerouting. Thus, Nef affects IS function via multiple independent mechanisms to optimize virus replication in the infected host. | lld:pubmed |
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| pubmed-article:18030346 | pubmed:language | eng | lld:pubmed |
| pubmed-article:18030346 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:18030346 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:18030346 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:18030346 | pubmed:issn | 1932-6203 | lld:pubmed |
| pubmed-article:18030346 | pubmed:author | pubmed-author:FacklerOliver... | lld:pubmed |
| pubmed-article:18030346 | pubmed:author | pubmed-author:RauchSusanneS | lld:pubmed |
| pubmed-article:18030346 | pubmed:author | pubmed-author:HallerClaudia... | lld:pubmed |
| pubmed-article:18030346 | pubmed:issnType | Electronic | lld:pubmed |
| pubmed-article:18030346 | pubmed:volume | 2 | lld:pubmed |
| pubmed-article:18030346 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:18030346 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:18030346 | pubmed:pagination | e1212 | lld:pubmed |
| pubmed-article:18030346 | pubmed:dateRevised | 2009-11-19 | lld:pubmed |
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| pubmed-article:18030346 | pubmed:meshHeading | pubmed-meshheading:18030346... | lld:pubmed |
| pubmed-article:18030346 | pubmed:year | 2007 | lld:pubmed |
| pubmed-article:18030346 | pubmed:articleTitle | HIV-1 Nef employs two distinct mechanisms to modulate Lck subcellular localization and TCR induced actin remodeling. | lld:pubmed |
| pubmed-article:18030346 | pubmed:affiliation | Abteilung Virologie, Universitätsklinikum Heidelberg, Heidelberg, Germany. | lld:pubmed |
| pubmed-article:18030346 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:18030346 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
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