Abstract:
:Reports indicate that myeloid and plasmacytoid dendritic cells (mDCs and pDCs), which are key effector cells in host innate immune responses, can be infected with HIV-1 and are reduced in number and function during the chronic phase of HIV disease. Furthermore, it was recently demonstrated that a sustained loss of mDCs and pDCs occurs in SIV-infected macaques. Since loss of functional DC populations might impair innate immune responses to opportunistic microorganisms and neoplastic cells, we explored whether inoculation of naive and SIV- or SHIV-infected pigtailed macaques with the hematopoietic cytokine FLT3-ligand (FLT3-L) would expand the number of mDCs and pDCs in vivo. After the macaques received supraphysiologic doses of FLT3-L, mDCs, pDCs, and monocytes increased up to 45-fold in blood, lymph nodes, and bone marrow (BM), with DC expansion in the BM preceding mobilization in blood and lymphoid tissues. FLT3-L also increased serum levels of IL-12, at least transiently, and elicited higher surface expression of HLA-DR and the activation markers CD25 and CD69 on NK and T cells. During and after treatment of infected animals, APCs increased in number and were activated; however, CD4(+) T cell numbers, virion RNA, and anti-SIV/SHIV antibody titers remained relatively stable, suggesting that FLT3-L might be a safe modality to expand DC populations and provide therapeutic benefit during chronic lentivirus infections.
journal_name
AIDS Res Hum Retrovirusesjournal_title
AIDS research and human retrovirusesauthors
Reeves RK,Wei Q,Stallworth J,Fultz PNdoi
10.1089/aid.2009.0053subject
Has Abstractpub_date
2009-12-01 00:00:00pages
1313-28issue
12eissn
0889-2229issn
1931-8405journal_volume
25pub_type
杂志文章abstract::A sharp increase in the number of people living with HIV has been documented in the Philippines. In response, the government has instituted antiretroviral therapy (ART) nationwide through HIV treatment hubs. However, no data presently exist on the status of ART drug-resistance-associated mutations (DRMs). In this stud...
journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/AID.2016.0151
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:10.1089/aid.1997.13.1147
更新日期:1997-09-01 00:00:00
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章,评审
doi:
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
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journal_title:AIDS research and human retroviruses
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章,评审
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pub_type: 杂志文章
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
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journal_title:AIDS research and human retroviruses
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journal_title:AIDS research and human retroviruses
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
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journal_title:AIDS research and human retroviruses
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doi:10.1089/aid.1998.14.561
更新日期:1998-05-01 00:00:00
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章,多中心研究
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journal_title:AIDS research and human retroviruses
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pub_type: 杂志文章
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journal_title:AIDS research and human retroviruses
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journal_title:AIDS research and human retroviruses
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章,评审
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
doi:
更新日期:1994-01-01 00:00:00
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journal_title:AIDS research and human retroviruses
pub_type: 杂志文章
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