1
|
Osuna C, Apps R, Lim SY, Kublin J, Thomas R, Chen E, Yoon G, Han Huang S, Chan D, Truong R, Ren Y, Bachtel N, Ackerman M, Ananworanich J, Barouch D, Michael N, Brad Jones R, Nixon D, Whitney J. CD32 does not mark the HIV-1/SIV latent reservoir. J Virus Erad 2017. [DOI: 10.1016/s2055-6640(20)30524-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
2
|
Huang SH, Ren Y, Macedo A, Patel S, Chan D, Horch E, Truong R, Bollard C, Bosque A, Jones R. BCL-2 inhibitor sensitizes the latent HIV reservoir to elimination by CTLs. J Virus Erad 2017. [DOI: 10.1016/s2055-6640(20)30549-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
3
|
Lima N, Huang S, Blackmore S, Garland A, Chan D, Truong R, Robb M, Michael N, Jones R, Trautmann L. Functional profiling of HIV-specific CTL clonotypes and their ability to reduce HIV reservoir. J Virus Erad 2017. [DOI: 10.1016/s2055-6640(20)30646-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
4
|
Goode D, Truong R, Villegas G, Calenda G, Guerra-Perez N, Piatak M, Lifson JD, Blanchard J, Gettie A, Robbiani M, Martinelli E. HSV-2-driven increase in the expression of α4β7 correlates with increased susceptibility to vaginal SHIV(SF162P3) infection. PLoS Pathog 2014; 10:e1004567. [PMID: 25521298 PMCID: PMC4270786 DOI: 10.1371/journal.ppat.1004567] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 11/10/2014] [Indexed: 11/19/2022] Open
Abstract
The availability of highly susceptible HIV target cells that can rapidly reach the mucosal lymphoid tissues may increase the chances of an otherwise rare transmission event to occur. Expression of α4β7 is required for trafficking of immune cells to gut inductive sites where HIV can expand and it is expressed at high level on cells particularly susceptible to HIV infection. We hypothesized that HSV-2 modulates the expression of α4β7 and other homing receptors in the vaginal tissue and that this correlates with the increased risk of HIV acquisition in HSV-2 positive individuals. To test this hypothesis we used an in vivo rhesus macaque (RM) model of HSV-2 vaginal infection and a new ex vivo model of macaque vaginal explants. In vivo we found that HSV-2 latently infected RMs appeared to be more susceptible to vaginal SHIVSF162P3 infection, had higher frequency of α4β7high CD4+ T cells in the vaginal tissue and higher expression of α4β7 and CD11c on vaginal DCs. Similarly, ex vivo HSV-2 infection increased the susceptibility of the vaginal tissue to SHIVSF162P3. HSV-2 infection increased the frequencies of α4β7high CD4+ T cells and this directly correlated with HSV-2 replication. A higher amount of inflammatory cytokines in vaginal fluids of the HSV-2 infected animals was similar to those found in the supernatants of the infected explants. Remarkably, the HSV-2-driven increase in the frequency of α4β7high CD4+ T cells directly correlated with SHIV replication in the HSV-2 infected tissues. Our results suggest that the HSV-2-driven increase in availability of CD4+ T cells and DCs that express high levels of α4β7 is associated with the increase in susceptibility to SHIV due to HSV-2. This may persists in absence of HSV-2 shedding. Hence, higher availability of α4β7 positive HIV target cells in the vaginal tissue may constitute a risk factor for HIV transmission.
Collapse
Affiliation(s)
- Diana Goode
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Rosaline Truong
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Guillermo Villegas
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Giulia Calenda
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Natalia Guerra-Perez
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Michael Piatak
- AIDS and Cancer Virus Program, Frederick National Laboratory, Frederick, Maryland, United States of America
| | - Jeffrey D. Lifson
- AIDS and Cancer Virus Program, Frederick National Laboratory, Frederick, Maryland, United States of America
| | - James Blanchard
- Tulane National Primate Research Center, Tulane University Sciences Center, Covington, Louisiana, United States of America
| | - Agegnehu Gettie
- Tulane National Primate Research Center, Tulane University Sciences Center, Covington, Louisiana, United States of America
- Aaron Diamond AIDS Research Center, Rockefeller University, New York, New York, United States of America
| | - Melissa Robbiani
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Elena Martinelli
- Center for Biomedical Research, Population Council, New York, New York, United States of America
- * E-mail:
| |
Collapse
|
5
|
Goode D, Truong R, Aravantinou M, Blanchard J, Gettie A, Robbiani M, Martinelli E. HSV-2-driven Changes in α 4β 7 Expression Correlate with Increased Susceptibility to SHIV Ex Vivo and In Vivo. AIDS Res Hum Retroviruses 2014. [DOI: 10.1089/aid.2014.5044.abstract] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Diana Goode
- Population Council, New York, NY, United States
| | | | | | - James Blanchard
- Tulane National Primate Research Center, Tulane, LA, United States
| | - Agegnehu Gettie
- Aaron Diamond AIDS Research Center, New York, NY, United States
| | | | | |
Collapse
|
6
|
Goode D, Aravantinou M, Jarl S, Truong R, Derby N, Guerra-Perez N, Kenney J, Blanchard J, Gettie A, Robbiani M, Martinelli E. Sex hormones selectively impact the endocervical mucosal microenvironment: implications for HIV transmission. PLoS One 2014; 9:e97767. [PMID: 24830732 PMCID: PMC4022654 DOI: 10.1371/journal.pone.0097767] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 04/22/2014] [Indexed: 12/29/2022] Open
Abstract
Several studies suggest that progesterone and estrogens may affect HIV transmission in different, possibly opposing ways. Nonetheless, a direct comparison of their effects on the mucosal immune system has never been done. We hypothesize that sex hormones might impact the availability of cells and immune factors important in early stages of mucosal transmission, and, in doing so influence the risk of HIV acquisition. To test this hypothesis, we employed 15 ovarectomized rhesus macaques: 5 were treated with Depot Medroxy Progesterone Acetate (DMPA), 6 with 17-β estradiol (E2) and 4 were left untreated. All animals were euthanized 5 weeks after the initiation of hormone treatment, a time post-DMPA injection associated with high susceptibility to SIV infection. We found that DMPA-treated macaques exhibited higher expression of integrin α4β7 (α4β7) on CD4+ T cells, the gut homing receptor and a marker of cells highly susceptible to HIV, in the endocervix than did the E2-treated animals. In contrast, the frequency of CCR5+ CD4+ T cells in DMPA-treated macaques was higher than in the E2-treated group in vaginal tissue, but lower in endocervix. α4β7 expression on dendritic cells (DCs) was higher in the DMPA-treated group in the endocervical tissue, but lower in vaginal tissue and on blood DCs compared with the E2-treated animals. Soluble MAdCAM-1, the α4β7 ligand, was present in the vaginal fluids of the control and E2-treated groups, but absent in the fluids from DMPA-treated animals. Both hormones modulated the expression and release of inflammatory factors and modified the distribution of sialomucins in the endocervix. In summary, we found that sex hormones profoundly impact mucosal immune factors that are directly implicated in HIV transmission. The effect is particularly significant in the endocervix. This may increase our understanding of the potential hormone-driven modulation of HIV susceptibility and potentially guide contraceptive policies in high-risk settings.
Collapse
Affiliation(s)
- Diana Goode
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Meropi Aravantinou
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Sebastian Jarl
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Rosaline Truong
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Nina Derby
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Natalia Guerra-Perez
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Jessica Kenney
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - James Blanchard
- Tulane National Primate Research Center, Tulane University Sciences Center, Covington, Louisiana, United States of America
| | - Agegnehu Gettie
- Aaron Diamond AIDS Research Center, Rockefeller University, New York, New York, United States of America
| | - Melissa Robbiani
- Center for Biomedical Research, Population Council, New York, New York, United States of America
| | - Elena Martinelli
- Center for Biomedical Research, Population Council, New York, New York, United States of America
- * E-mail:
| |
Collapse
|
7
|
Zhong P, Agosto LM, Ilinskaya A, Dorjbal B, Truong R, Derse D, Uchil PD, Heidecker G, Mothes W. Cell-to-cell transmission can overcome multiple donor and target cell barriers imposed on cell-free HIV. PLoS One 2013; 8:e53138. [PMID: 23308151 PMCID: PMC3538641 DOI: 10.1371/journal.pone.0053138] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Accepted: 11/23/2012] [Indexed: 11/18/2022] Open
Abstract
Virus transmission can occur either by a cell-free mode through the extracellular space or by cell-to-cell transmission involving direct cell-to-cell contact. The factors that determine whether a virus spreads by either pathway are poorly understood. Here, we assessed the relative contribution of cell-free and cell-to-cell transmission to the spreading of the human immunodeficiency virus (HIV). We demonstrate that HIV can spread by a cell-free pathway if all the steps of the viral replication cycle are efficiently supported in highly permissive cells. However, when the cell-free path was systematically hindered at various steps, HIV transmission became contact-dependent. Cell-to-cell transmission overcame barriers introduced in the donor cell at the level of gene expression and surface retention by the restriction factor tetherin. Moreover, neutralizing antibodies that efficiently inhibit cell-free HIV were less effective against cell-to-cell transmitted virus. HIV cell-to-cell transmission also efficiently infected target T cells that were relatively poorly susceptible to cell-free HIV. Importantly, we demonstrate that the donor and target cell types influence critically the extent by which cell-to-cell transmission can overcome each barrier. Mechanistically, cell-to-cell transmission promoted HIV spread to more cells and infected target cells with a higher proviral content than observed for cell-free virus. Our data demonstrate that the frequently observed contact-dependent spread of HIV is the result of specific features in donor and target cell types, thus offering an explanation for conflicting reports on the extent of cell-to-cell transmission of HIV.
Collapse
Affiliation(s)
- Peng Zhong
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Luis M. Agosto
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Anna Ilinskaya
- HIV Drug Resistance Program, National Cancer Institute-Frederick, Frederick, Maryland, United States of America
| | - Batsukh Dorjbal
- HIV Drug Resistance Program, National Cancer Institute-Frederick, Frederick, Maryland, United States of America
| | - Rosaline Truong
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - David Derse
- HIV Drug Resistance Program, National Cancer Institute-Frederick, Frederick, Maryland, United States of America
| | - Pradeep D. Uchil
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Gisela Heidecker
- HIV Drug Resistance Program, National Cancer Institute-Frederick, Frederick, Maryland, United States of America
| | - Walther Mothes
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut, United States of America
- * E-mail:
| |
Collapse
|
8
|
Mamoun CB, Truong R, Gluzman I, Akopyants NS, Oksman A, Goldberg DE. Transfer of genes into Plasmodium falciparum by polyamidoamine dendrimers. Mol Biochem Parasitol 1999; 103:117-21. [PMID: 10514088 DOI: 10.1016/s0166-6851(99)00116-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- C B Mamoun
- Howard Hughes Medical Institute, Washington University School of Medicine, Department of Molecular Microbiology, St. Louis, MO 63110, USA
| | | | | | | | | | | |
Collapse
|
9
|
Abstract
Recent studies suggest that nitric oxide (NO) may regulate hormone biosynthesis and secretion. This was tested by treating male rats with NG-nitro-L-arginine methyl ester (NAME), a NO synthase inhibitor, and measuring serum and testicular interstitial fluid testosterone and serum corticosterone, luteinizing hormone (LH), and prolactin (PRL). The effect of NG-nitro-L-arginine (NA), a less-soluble form of the same NO synthase inhibitor, on the reproductive suppressant actions of alcohol was also examined. NAME increased testosterone and corticosterone secretion dose-dependently without affecting LH and PRL secretion. The alcohol-induced suppression of testosterone or LH secretion was not altered by treatment with NA. Although effects of NAME and NA on other systems may be involved, these results indicate that testicular and adrenal steroidogenesis are negatively regulated by endogenous NO and that NO does not regulate LH and PRL secretion or inhibit the testicular steroidogenic pathway in the same way as alcohol.
Collapse
Affiliation(s)
- M L Adams
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110
| | | | | | | |
Collapse
|