| pubmed-article:14990703 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:14990703 | lifeskim:mentions | umls-concept:C0019704 | lld:lifeskim |
| pubmed-article:14990703 | lifeskim:mentions | umls-concept:C0237401 | lld:lifeskim |
| pubmed-article:14990703 | lifeskim:mentions | umls-concept:C0009013 | lld:lifeskim |
| pubmed-article:14990703 | lifeskim:mentions | umls-concept:C0017431 | lld:lifeskim |
| pubmed-article:14990703 | lifeskim:mentions | umls-concept:C0205409 | lld:lifeskim |
| pubmed-article:14990703 | lifeskim:mentions | umls-concept:C1707455 | lld:lifeskim |
| pubmed-article:14990703 | lifeskim:mentions | umls-concept:C0449560 | lld:lifeskim |
| pubmed-article:14990703 | lifeskim:mentions | umls-concept:C0205460 | lld:lifeskim |
| pubmed-article:14990703 | pubmed:issue | 6 | lld:pubmed |
| pubmed-article:14990703 | pubmed:dateCreated | 2004-3-1 | lld:pubmed |
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| pubmed-article:14990703 | pubmed:abstractText | Individuals infected with human immunodeficiency virus type 1 (HIV-1) subtype C infrequently harbour X4 viruses. We studied R5 and X4 biological clones generated from HIV-1 subtype C-infected individuals. All subtype C R5 viruses demonstrated slower profiles of replication on CD4(+) lymphocytes in comparison to subtype B viruses, whereas subtype C X4 viruses replicated with comparable efficiency to subtype B X4 viruses. No differences were identified in CC or CXC chemokine inhibitions (RANTES and SDF-1alpha, respectively) between subtype C and subtype B viruses. Immature dendritic cells were shown in coculture experiments to similarly enhance the infection of subtype C and subtype B R5 as well as X4 viruses. By amino acid sequence analysis, we showed that the R5 and X4 subtype C gp120 envelope gene alterations were similar to those for a switching subtype B virus, specifically with respect to the V3 charge and envelope N-linked glycosylation patterns. By phylogenetic analysis, we showed that one patient was infected with HIV-1 C' and the other was infected with HIV-1 C" and that one of the patients harbored a virus that was a recombinant in the gp120 env gene between an R5 and an X4 virus, with the resultant virus being R5. No differences were identified between the long terminal repeat regions of the subtype C R5 and X4 biological clones. These results indicate that even though R5 subtype C viruses are restrictive for virus replication, the R5-to-X4 phenotype switch can occur and does so in a manner similar to that of subtype B viruses. | lld:pubmed |
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| pubmed-article:14990703 | pubmed:language | eng | lld:pubmed |
| pubmed-article:14990703 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:14990703 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:14990703 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:14990703 | pubmed:month | Mar | lld:pubmed |
| pubmed-article:14990703 | pubmed:issn | 0022-538X | lld:pubmed |
| pubmed-article:14990703 | pubmed:author | pubmed-author:GoudsmitJaapJ | lld:pubmed |
| pubmed-article:14990703 | pubmed:author | pubmed-author:BakkerMargree... | lld:pubmed |
| pubmed-article:14990703 | pubmed:author | pubmed-author:SchuitemakerH... | lld:pubmed |
| pubmed-article:14990703 | pubmed:author | pubmed-author:BrouwerMargre... | lld:pubmed |
| pubmed-article:14990703 | pubmed:author | pubmed-author:AbebeAlmazA | lld:pubmed |
| pubmed-article:14990703 | pubmed:author | pubmed-author:KliphuisAlett... | lld:pubmed |
