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PMID |
Sentence |
1 |
1719081
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Although this epitope is in a conserved region of the gag protein of SIV, its recognition by a CD4+ T cell clone was abrogated by sequence variation in the equivalent HIV protein.
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2 |
11983247
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We used intracellular cytokine staining (ICS) of peripheral blood mononuclear cells (PBMCs) from animals during the acute phase of viral infection stimulated with peptides spanning the entire protein sequence of SIV to determine which peptides were recognized by CD8 and CD4 positive T cells.
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3 |
15265893
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In contrast, a CpG-C ISS-ODN and aldrithiol-2-inactivated (AT-2) SIV induced considerable PDC activation and IFN-alpha release without needing exogenous IL-3.
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4 |
16943292
|
We have recently shown that survival in plasmid DNA-primed/recombinant adenovirus-boosted rhesus monkeys that are challenged with the simian immunodeficiency virus SIVmac251 is associated with the preservation postchallenge of central memory CD4(+) T lymphocytes and robust gamma interferon (IFN-gamma)-producing SIV-specific CD8(+) and CD4(+) T-lymphocyte responses.
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5 |
17376899
|
These results demonstrate that SIV-specific CD8 T cells express PD-1 after exposure to antigen but downregulate expression under conditions of antigen clearance and enhance expression under conditions of antigen persistence.
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6 |
17440051
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The majority of SIV-specific CD8+ T cells expressed a PD-1(high) phenotype, independent of their differentiation status, in all tissues tested.
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7 |
17440051
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SIV-specific PD-1(high)CD8+ T cells produced IFN-gamma, TNF-alpha, and IL-2 under cognate peptide stimulation.
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8 |
18667509
|
Analysis of the quality and quantity of vaccine-induced CD8(+) T cells demonstrated that SIV-specific CD8(+) T cells generated under conditions of CD4(+) T-cell deficiency expressed low levels of Bcl-2 and interleukin-2 (IL-2), and plasma virus levels increased over time.
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9 |
18097036
|
At viral set point, however, activated SIV-specific CD8+ T cells and NK cells were reduced in the blood of IL-15-treated animals and LN SIV-infected cells were increased.
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10 |
21223428
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SIV-specific CD8+ T cells in genital tissues expressed high levels of CXCR3 and CCR5, chemokine receptors normally expressed on memory T cells that home to inflamed tissues.
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11 |
21317390
|
The efficacy of two SIV DNA plus recombinant modified vaccinia virus Ankara nasal vaccine regimens, one combined with plasmids expressing IL-2 and IL-15, the other with plasmids expressing GM-CSF, IL-12, and TNF-?, which may better stimulate humoral responses, was evaluated in two female rhesus macaque groups.
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12 |
19219024
|
RhCMV vectors expressing SIV Gag, Rev-Tat-Nef and Env persistently infected rhesus macaques, regardless of preexisting RhCMV immunity, and primed and maintained robust, SIV-specific CD4+ and CD8+ TEM cell responses (characterized by coordinate tumor necrosis factor, interferon-gamma and macrophage inflammatory protein-1beta expression, cytotoxic degranulation and accumulation at extralymphoid sites) in the absence of neutralizing antibodies.
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13 |
21562493
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Remarkably, long-term RhCMV vector-associated SIV control was insensitive to either CD8(+) or CD4(+) lymphocyte depletion and, at necropsy, cell-associated SIV was only occasionally measurable at the limit of detection with ultrasensitive assays, observations that indicate the possibility of eventual viral clearance.
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14 |
21890164
|
The presence of SIV gp160 as the only envelope protein on chimeric particles surface altered the cell tropism of the new virus from CD46+ to CD4+ cells.
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