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| Content Provider | PubMed Central |
|---|---|
| Author | Martinson, Jeffrey A. Tenorio, Allan R. Montoya, Carlos J. Al-harthi, Lena Gichinga, Carolyne N. Krieg, Arthur M. Baum, Linda L. Landay, Alan L. |
| Copyright Year | 2007 |
| Abstract | Oligodeoxynucleotides (ODN) with unmethylated deoxycytidyl-deoxyguanosine dinucleotides (CpG-ODNs) stimulate Toll-like receptor 9 (TLR9) in plasmacytoid dendritic cells (pDC) and B cells and activate innate and adaptive immunity. Three classes of synthetic CpG-ODNs, class A, B and C, activate cells through TLR9; our goal was to evaluate their effect on cells from human immunodeficiency virus (HIV)-1+ individuals. We compared the frequencies and the unstimulated activation status of immune effector cells in HIV-1+ and HIV-1– individuals. Fewer pDC, myeloid dendritic cells (mDC), B cells, natural killer (NK) cells and invariant natural killer T cells (iNKT) were present in HIV-1+ peripheral blood mononuclear cells (PBMC) and their baseline activation status was higher than HIV-1– PBMC. Exposure of HIV-1+ PBMC to all classes of CpG-ODNs led to activation and maturation of pDC based on CD86, CD80, and CD83 expression similar to that of cells from HIV-1– individuals. The percentage of CpG-ODN stimulated pDC that express CD40 was dramatically higher when cells were obtained from HIV-1+ than from HIV-1– individuals. B-lymphocytes were activated similarly in HIV-1+ and HIV-1– individuals. mDC, NK and iNKT cell, which lack TLR9, were indirectly activated. Interferon-α (IFN-α) and interferon inducible protein 10 (IP-10) secretion was induced by class A or C but not class B CpG-ODN, but the concentrations were less than those produced by HIV-1– PBMC. HIV-1 infected individuals have fewer innate effector cells that are chronically activated, but these cells can be further activated by CpG-ODN, which suggests that synthetic CpG-ODNs could be used to enhance the immune system in HIV-1 infected individuals. |
| Related Links | http://dx.doi.org/10.1111/j.1365-2567.2007.02530.x |
| Ending Page | 535 |
| Page Count | 10 |
| Starting Page | 526 |
| File Format | |
| ISSN | 00192805 |
| e-ISSN | 13652567 |
| Journal | Immunology |
| Issue Number | 4 |
| Volume Number | 120 |
| Language | English |
| Publisher | Blackwell Science Inc |
| Publisher Date | 2007-04-01 |
| Access Restriction | Open |
| Rights Holder | Blackwell Science Inc |
| Subject Keyword | Immunology Immunology and Allergy Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology |
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