HIV-1 and hijacking of the host immune system: the current scenario
Muhammad Imran
Atta-ur-Rahman School of Applied Bio-Sciences, Department of Healthcare Biotechnology, National University of Sciences and Technology (NUST), Islamabad, Pakistan
Department of Medical Laboratory Sciences, Faculty of Health and Allied Sciences, Imperial College of Business Studies (ICBS), Lahore, Pakistan
Search for more papers by this authorCorresponding Author
Sobia Manzoor
Atta-ur-Rahman School of Applied Bio-Sciences, Department of Healthcare Biotechnology, National University of Sciences and Technology (NUST), Islamabad, Pakistan
Sobia Manzoor, Atta-ur-Rahman School of Applied Bio-Sciences, Department of Healthcare Biotechnology, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan. e-mails: [email protected]; [email protected]Search for more papers by this authorMuhammad Saalim
Atta-ur-Rahman School of Applied Bio-Sciences, Department of Healthcare Biotechnology, National University of Sciences and Technology (NUST), Islamabad, Pakistan
Search for more papers by this authorSaleha Resham
Atta-ur-Rahman School of Applied Bio-Sciences, Department of Healthcare Biotechnology, National University of Sciences and Technology (NUST), Islamabad, Pakistan
Search for more papers by this authorAneela Javed
Atta-ur-Rahman School of Applied Bio-Sciences, Department of Healthcare Biotechnology, National University of Sciences and Technology (NUST), Islamabad, Pakistan
Search for more papers by this authorAhmed Bilal Waqar
Department of Medical Laboratory Sciences, Faculty of Health and Allied Sciences, Imperial College of Business Studies (ICBS), Lahore, Pakistan
Imperial Post Graduate Medical Institute, Imperial College of Business Studies (ICBS), Lahore, Pakistan
Search for more papers by this authorMuhammad Imran
Atta-ur-Rahman School of Applied Bio-Sciences, Department of Healthcare Biotechnology, National University of Sciences and Technology (NUST), Islamabad, Pakistan
Department of Medical Laboratory Sciences, Faculty of Health and Allied Sciences, Imperial College of Business Studies (ICBS), Lahore, Pakistan
Search for more papers by this authorCorresponding Author
Sobia Manzoor
Atta-ur-Rahman School of Applied Bio-Sciences, Department of Healthcare Biotechnology, National University of Sciences and Technology (NUST), Islamabad, Pakistan
Sobia Manzoor, Atta-ur-Rahman School of Applied Bio-Sciences, Department of Healthcare Biotechnology, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan. e-mails: [email protected]; [email protected]Search for more papers by this authorMuhammad Saalim
Atta-ur-Rahman School of Applied Bio-Sciences, Department of Healthcare Biotechnology, National University of Sciences and Technology (NUST), Islamabad, Pakistan
Search for more papers by this authorSaleha Resham
Atta-ur-Rahman School of Applied Bio-Sciences, Department of Healthcare Biotechnology, National University of Sciences and Technology (NUST), Islamabad, Pakistan
Search for more papers by this authorAneela Javed
Atta-ur-Rahman School of Applied Bio-Sciences, Department of Healthcare Biotechnology, National University of Sciences and Technology (NUST), Islamabad, Pakistan
Search for more papers by this authorAhmed Bilal Waqar
Department of Medical Laboratory Sciences, Faculty of Health and Allied Sciences, Imperial College of Business Studies (ICBS), Lahore, Pakistan
Imperial Post Graduate Medical Institute, Imperial College of Business Studies (ICBS), Lahore, Pakistan
Search for more papers by this authorAbstract
Human immunodeficiency virus (HIV) infection is a major health burden across the world which leads to the development of acquired immune deficiency syndrome (AIDS). This review article discusses the prevalence of HIV, its major routes of transmission, natural immunity, and evasion from the host immune system. HIV is mostly prevalent in Sub-Saharan Africa and low income countries. It is mostly transmitted by sharing syringe needles, blood transfusion, and sexual routes. The host immune system is categorized into three main types; the innate, the adaptive, and the intrinsic immune system. Regarding the innate immune system against HIV, the key players are mucosal membrane, dendritic cells (DCs), complement system, interferon, and host Micro RNAs. The major components of the adaptive immune system exploited by HIV are T cells mainly CD4+ T cells and B cells. The intrinsic immune system confronted by HIV involves (apolipoprotein B mRNA-editing enzyme, catalytic polypeptide-like 3G) APOBEC3G, tripartite motif 5-α (TRIM5a), terherin, and (SAM-domain HD-domain containing protein) SAMHD1. HIV-1 efficiently interacts with the host immune system, exploits the host machinery, successfully replicates and transmits from one cell to another. Further research is required to explore evasion strategies of HIV to develop novel therapeutic approaches against HIV.
References
- 1Faulstich ME. Acquired immune deficiency syndrome: an overview of central nervous system complications and neuropsychological sequelae. Int J Neurosci 1986; 30: 249–54.
- 2Pereyra F, Addo MM, Kaufmann DE, Liu Y, Miura T, Rathod A, et al. Genetic and immunologic heterogeneity among persons who control HIV infection in the absence of therapy. Journal of Infectious Diseases 2008; 197: 563–71.
- 3 World Health Organization Report: http://www.who.int/hiv/en/
- 4 Global AIDS Response Progress Report. Country Progress Report Pakistan, 2014. www.unaids.org/en/regionscountries/countries/pakistan/.
- 5Malim MH, Emerman M. HIV-1 accessory proteins—ensuring viral survival in a hostile environment. Cell Host Microbe 2008; 3: 388–98.
- 6Piacentini L, Fenizia C, Naddeo V, Clerici M. Not just sheer luck! Immune correlates of protection against HIV-1 infection. Vaccine 2008; 26: 3002–7.
- 7Walker B. Elite control of HIV Infection: implications for vaccines and treatment. Top HIV Med 2006; 15: 134–6.
- 8Berger EA, Murphy PM, Farber JM. Chemokine receptors as HIV-1 coreceptors: roles in viral entry, tropism, and disease. Annu Rev Immunol 1999; 17: 657–700.
- 9Carrington M, Dean M, Martin MP, O'Brien SJ. Genetics of HIV-1 infection: chemokine receptor CCR5 polymorphism and its consequences. Hum Mol Genet 1999; 8: 1939–45.
- 10Schols D. HIV co-receptors as targets for antiviral therapy. Curr Top Med Chem 2004; 4: 883–93.
- 11Hajishengallis G, Sojar H, Genco RJ, DeNardin E. Intracellular signaling and cytokine induction upon interactions of Porphyromonas gingivalis fimbriae with pattern-recognition receptors. Immunol Invest 2004; 33: 157–72.
- 12Takaoka A, Wang Z, Choi MK, Yanai H, Negishi H, Ban T, et al. DAI (DLM-1/ZBP1) is a cytosolic DNA sensor and an activator of innate immune response. Nature 2007; 448: 501–5.
- 13Kawai T, Akira S. Signaling to NF-κB by Toll-like receptors. Trends Mol Med 2007; 13: 460–9.
- 14Yoneyama M, Suhara W, Fukuhara Y, Fukuda M, Nishida E, Fujita T. Direct triggering of the type I interferon system by virus infection: activation of a transcription factor complex containing IRF-3 and CBP/p300. EMBO J 1998; 17: 1087–95.
- 15Chieux V, Hober D, Chehadeh W, Wattr P. [Anti-viral proteins: from interferon alpha to its receptor]. Ann Biol Clin 1999; 57: 283–90.
- 16Serra-Moreno R, Jia B, Breed M, Alvarez X, Evans DT. Compensatory changes in the cytoplasmic tail of gp41 confer resistance to tetherin/BST-2 in a pathogenic nef-deleted SIV. Cell Host Microbe 2011; 9: 46–57.
- 17McMichael AJ, Borrow P, Tomaras GD, Goonetilleke N, Haynes BF. The immune response during acute HIV-1 infection: clues for vaccine development. Nat Rev Immunol 2010; 10: 11–23.
- 18Nazli A, Chan O, Dobson-Belaire WN, Ouellet M, Tremblay MJ, Gray-Owen SD, et al. Exposure to HIV-1 directly impairs mucosal epithelial barrier integrity allowing microbial translocation. PLoS Pathog 2010; 6: e1000852.
- 19Liu Y-J. Dendritic cell subsets and lineages, and their functions in innate and adaptive immunity. Cell 2001; 106: 259–62.
- 20Cella M, Jarrossay D, Facchetti F, Alebardi O, Nakajima H, Lanzavecchia A, et al. Plasmacytoid monocytes migrate to inflamed lymph nodes and produce large amounts of type I interferon. Nat Med 1999; 5: 919–23.
- 21Siegal FP, Kadowaki N, Shodell M, Fitzgerald-Bocarsly PA, Shah K, Ho S, et al. The nature of the principal type 1 interferon-producing cells in human blood. Science 1999; 284: 1835–7.
- 22McIlroy D, Autran B, Cheynier R, Wain-Hobson S, Clauvel J-P, Oksenhendler E, et al. Infection frequency of dendritic cells and CD4+ T lymphocytes in spleens of human immunodeficiency virus-positive patients. J Virol 1995; 69: 4737–45.
- 23Smed-Sörensen A, Loré K, Vasudevan J, Louder MK, Andersson J, Mascola JR, et al. Differential susceptibility to human immunodeficiency virus type 1 infection of myeloid and plasmacytoid dendritic cells. J Virol 2005; 79: 8861–9.
- 24Turville SG, Santos JJ, Frank I, Cameron PU, Wilkinson J, Miranda-Saksena M, et al. Immunodeficiency virus uptake, turnover, and 2-phase transfer in human dendritic cells. Blood 2004; 103: 2170–9.
- 25McKenna K, Beignon A-S, Bhardwaj N. Plasmacytoid dendritic cells: linking innate and adaptive immunity. J Virol 2005; 79: 17–27.
- 26Moris A, Nobile C, Buseyne F, Porrot F, Abastado J-P, Schwartz O. DC-SIGN promotes exogenous MHC-I–restricted HIV-1 antigen presentation. Blood 2004; 103: 2648–54.
- 27Li Q, Estes JD, Schlievert PM, Duan L, Brosnahan AJ, Southern PJ, et al. Glycerol monolaurate prevents mucosal SIV transmission. Nature 2009; 458: 1034–8.
- 28Fowke KR, Kaul R, Rosenthal KL, Oyugi J, Kimani J, Rutherford WJ, et al. HIV-1-specific cellular immune responses among HIV-1-resistant sex workers. Immunol Cell Biol 2000; 78: 586–95.
- 29Lajoie J, Juno J, Burgener A, Rahman S, Mogk K, Wachihi C, et al. A distinct cytokine and chemokine profile at the genital mucosa is associated with HIV-1 protection among HIV-exposed seronegative commercial sex workers. Mucosal Immunol 2012; 5: 277–87.
- 30Rotger M, Dalmau J, Rauch A, McLaren P, Bosinger SE, Martinez R, et al. Comparative transcriptomics of extreme phenotypes of human HIV-1 infection and SIV infection in sooty mangabey and rhesus macaque. J Clin Investig 2011; 121: 2391–400.
- 31O'Brien M, Manches O, Bhardwaj N. Plasmacytoid dendritic cells in HIV infection. Advances in experimental medicine and biology. 2013; 762: 71–107.
- 32Fernandez S, Tanaskovic S, Helbig K, Rajasuriar R, Kramski M, Murray JM, et al. CD4+ T-cell deficiency in HIV patients responding to antiretroviral therapy is associated with increased expression of interferon-stimulated genes in CD4+ T cells. J Infect Dis 2011; 204: 1927–35.
- 33Giovanna Quaranta M, Tritarelli E, Giordani L, Viora M. HIV-1 Nef induces dendritic cell differentiation: a possible mechanism of uninfected CD4+ T cell activation. Exp Cell Res 2002; 275: 243–54.
- 34Baker JV, Duprez D. Biomarkers and HIV-associated cardiovascular disease. Curr Opin HIV AIDS 2010; 5: 511–6.
- 35Lekakis J, Ikonomidis I. Cardiovascular complications of AIDS. Curr Opin Crit Care 2010; 16: 408–12.
- 36Jacquelin B, Mayau V, Targat B, Liovat A-S, Kunkel D, Petitjean G, et al. Nonpathogenic SIV infection of African green monkeys induces a strong but rapidly controlled type I IFN response. J Clin Investig 2009; 119: 3544–55.
- 37Wu L, KewalRamani VN. Dendritic-cell interactions with HIV: infection and viral dissemination. Nat Rev Immunol 2006; 6: 859–68.
- 38Geijtenbeek TB, Kwon DS, Torensma R, van Vliet SJ, van Duijnhoven GC, Middel J, et al. DC-SIGN, a dendritic cell-specific HIV-1-binding protein that enhances trans infection of T cells. Cell 2000; 100: 587–97.
- 39Trumpfheller C, Park CG, Finke J, Steinman RM, Granelli-Piperno A. Cell type-dependent retention and transmission of HIV-1 by DC-SIGN. Int Immunol 2003; 15: 289–98.
- 40Marschang P, Ebenbichler C, Dierich M. HIV and complement: role of the complement system in HIV infection. Int Arch Allergy Immunol 1994; 103: 113–7.
- 41Speth C, Dierich M. Modulation of cell surface protein expression by infection with HIV-1. Leukemia 1999; 13: S99–105.
- 42Stoiber H, Frank I, Spruth M, Schwendinger M, Mullauer B, Windisch JM, et al. Inhibiton of HIV-1 infection in vitro by monoclonal antibodies to the complement receptor type 3 (CR3): an accessory role for CR3 during virus entry? Mol Immunol 1997; 34: 855–63.
- 43Speth C, Schabetsberger T, Mohsenipour I, Stöckl G, Würzner R, Stoiber H, et al. Mechanism of human immunodeficiency virus-induced complement expression in astrocytes and neurons. J Virol 2002; 76: 3179–88.
- 44Stoiber H, Banki Z, Wilflingseder D, Dierich MP. Complement–HIV interactions during all steps of viral pathogenesis. Vaccine 2008; 26: 3046–54.
- 45Stoiber H, Pruenster M, Ammann CG, Dierich MP. Complement-opsonized HIV: the free rider on its way to infection. Mol Immunol 2005; 42: 153–60.
- 46Ellegård R, Crisci E, Burgener A, Sjöwall C, Birse K, Westmacott G, et al. Complement opsonization of HIV-1 results in decreased antiviral and inflammatory responses in immature dendritic cells via CR3. J Immunol 2014; 193: 4590–601.
- 47Pinter C, Siccardi AG, Lopalco L, Longhi R, Clivio A. HIV glycoprotein 41 and complement factor H interact with each other and share functional as well as antigenic homology. AIDS Res Hum Retroviruses 1995; 11: 971–80.
- 48Stoiber H, Pinter C, Siccardi AG, Clivio A, Dierich MP. Efficient destruction of human immunodeficiency virus in human serum by inhibiting the protective action of complement factor H and decay accelerating factor (DAF, CD55). J Exp Med 1996; 183: 307–10.
- 49Schmitz J, Zimmer J, Kluxen B, Aries S, Bögel M, Gigli I, et al. Antibody-dependent complement-mediated cytotoxicity in sera from patients with HIV-1 infection is controlled by CD55 and CD59. J Clin Investig 1995; 96: 1520.
- 50Douek DC, Picker LJ, Koup RA. T cell dynamics in HIV-1 infection*. Annu Rev Immunol 2003; 21: 265–304.
- 51Wahl SM, Greenwell-Wild T, Vázquez N. HIV accomplices and adversaries in macrophage infection. J Leukoc Biol 2006; 80: 973–83.
- 52Vieillard V, Strominger JL, Debré P. NK cytotoxicity against CD4+ T cells during HIV-1 infection: a gp41 peptide induces the expression of an NKp44 ligand. Proc Natl Acad Sci USA 2005; 102: 10981–6.
- 53Kedzierska K, Crowe SM. Cytokines and HIV-1: interactions and clinical implications. Antiviral Chem Chemother 2001; 12: 133–50.
- 54Fittipaldi A, Giacca M. Transcellular protein transduction using the Tat protein of HIV-1. Adv Drug Deliv Rev 2005; 57: 597–608.
- 55Chen W, Royer WE Jr. Structural insights into interferon regulatory factor activation. Cell Signal 2010; 22: 883–7.
- 56Yamamoto JK, Barré-Sinoussi F, Bolton V, Pedersen NC, Gardner MB. Human alpha-and beta-interferon but not gamma-suppress the in vitro replication of LAV, HTLV-III, and ARV-2. J Interferon Res 1986; 6: 143–52.
- 57Pitha PM. Multiple effects of interferon on the replication of human immunodeficiency virus type 1. Antiviral Res 1994; 24: 205–19.
- 58Müller-Trutwin M, Hosmalin A. Role for plasmacytoid dendritic cells in anti-HIV innate immunity. Immunol Cell Biol 2005; 83: 578–85.
- 59Martinelli E, Cicala C, Van Ryk D, Goode DJ, Macleod K, Arthos J, et al. HIV-1 gp120 inhibits TLR9-mediated activation and IFN-α secretion in plasmacytoid dendritic cells. Proc Natl Acad Sci 2007; 104: 3396–401.
- 60Mavilio D, Lombardo G, Kinter A, Fogli M, La Sala A, Ortolano S, et al. Characterization of the defective interaction between a subset of natural killer cells and dendritic cells in HIV-1 infection. J Exp Med 2006; 203: 2339–50.
- 61De Maria A, Fogli M, Costa P, Murdaca G, Puppo F, Mavilio D, et al. The impaired NK cell cytolytic function in viremic HIV-1 infection is associated with a reduced surface expression of natural cytotoxicity receptors (NKp46, NKp30 and NKp44). Eur J Immunol 2003; 33: 2410–8.
- 62Jiménez VC, Booiman T, de Taeye SW, van Dort KA, Rits MA, Hamann J, et al. Differential expression of HIV-1 interfering factors in monocyte-derived macrophages stimulated with polarizing cytokines or interferons. Sci Rep 2012; 2: 763.
- 63Yan N, Regalado-Magdos AD, Stiggelbout B, Lee-Kirsch MA, Lieberman J. The cytosolic exonuclease TREX1 inhibits the innate immune response to human immunodeficiency virus type 1. Nat Immunol 2010; 11: 1005–13.
- 64Clerzius G, Gélinas JF, Gatignol A. Multiple levels of PKR inhibition during HIV-1 replication. Rev Med Virol 2011; 21: 42–53.
- 65Chendrimada TP, Gregory RI, Kumaraswamy E, Norman J, Cooch N, Nishikura K, et al. TRBP recruits the Dicer complex to Ago2 for microRNA processing and gene silencing. Nature 2005; 436: 740–4.
- 66Gatignol A, Lainé S, Clerzius G. Dual role of TRBP in HIV replication and RNA interference: viral diversion of a cellular pathway or evasion from antiviral immunity? Retrovirology 2005; 2: 65.
- 67Gupta A, Nagilla P, Le H-S, Bunney C, Zych C, Thalamuthu A, et al. Comparative expression profile of miRNA and mRNA in primary peripheral blood mononuclear cells infected with human immunodeficiency virus (HIV-1). PLoS One 2011; 6: e22730.
- 68Sisk JM, Clements JE, Witwer KW. miRNA profiles of monocyte-lineage cells are consistent with complicated roles in HIV-1 restriction. Viruses 2012; 4: 1844–64.
- 69Bennasser Y, Le S-Y, Benkirane M, Jeang K-T. Evidence that HIV-1 encodes an siRNA and a suppressor of RNA silencing. Immunity 2005; 22: 607–19.
- 70Veazey RS, DeMaria M, Chalifoux LV, Shvetz DE, Pauley DR, Knight HL, et al. Gastrointestinal tract as a major site of CD4+ T cell depletion and viral replication in SIV infection. Science 1998; 280: 427–31.
- 71Mattapallil JJ, Smit-McBride Z, McChesney M, Dandekar S. Intestinal intraepithelial lymphocytes are primed for gamma interferon and MIP-1β expression and display antiviral cytotoxic activity despite severe CD4+ T-cell depletion in primary simian immunodeficiency virus infection. J Virol 1998; 72: 6421–9.
- 72Giorgi JV, Hultin LE, McKeating JA, Johnson TD, Owens B, Jacobson LP, et al. Shorter survival in advanced human immunodeficiency virus type 1 infection is more closely associated with T lymphocyte activation than with plasma virus burden or virus chemokine coreceptor usage. J Infect Dis 1999; 179: 859–70.
- 73Peter ME, Ehret A, Berndt C, Krammer PH. AIDS and the death receptors. Br Med Bull 1997; 53: 604–16.
- 74Herbeuval J-P, Nilsson J, Boasso A, Hardy AW, Vaccari M, Cecchinato V, et al. HAART reduces death ligand but not death receptors in lymphoid tissue of HIV-infected patients and simian immunodeficiency virus-infected macaques. AIDS 2009; 23: 35–40.
- 75Cooper A, García M, Petrovas C, Yamamoto T, Koup RA, Nabel GJ. HIV-1 causes CD4 cell death through DNA-dependent protein kinase during viral integration. Nature 2013; 498: 376–9.
- 76Dabrowska A, Kim N, Aldovini A. Tat-induced FOXO3a is a key mediator of apoptosis in HIV-1-infected human CD4+ T lymphocytes. J Immunol 2008; 181: 8460–77.
- 77Katsikis PD, Wunderlich ES, Smith CA, Herzenberg LA. Fas antigen stimulation induces marked apoptosis of T lymphocytes in human immunodeficiency virus-infected individuals. J Exp Med 1995; 181: 2029–36.
- 78Huang J, Ofek G, Laub L, Louder MK, Doria-Rose NA, Longo NS, et al. Broad and potent neutralization of HIV-1 by a gp41-specific human antibody. Nature 2012; 491: 406–12.
- 79Overbaugh J, Morris L. The antibody response against HIV-1. Cold Spring Harb Perspect Med 2012; 2: a007039.
- 80Wyatt R, Kwong PD, Desjardins E, Sweet RW, Robinson J, Hendrickson WA, et al. The antigenic structure of the HIV gp120 envelope glycoprotein. Nature 1998; 393: 705–11.
- 81Hu B, Liao H-X, Alam SM, Goldstein B. Estimating the probability of polyreactive antibodies 4E10 and 2F5 disabling a gp41 Trimer after T Cell-HIV adhesion. PLoS Comput Biol 2014; 10: e1003431.
- 82Trapani JA. Dual mechanisms of apoptosis induction by cytotoxic lymphocytes. Int Rev Cytol 1998; 182: 111–92.
- 83Smyth MJ, Trapani JA. The relative role of lymphocyte granule exocytosis versus death receptor-mediated cytotoxicity in viral pathophysiology. J Virol 1998; 72: 1–9.
- 84Cocchi F, DeVico AL, Garzino-Demo A, Arya SK, Gallo RC, Lusso P. Identification of RANTES, MIP-1α, and MIP-1β as the major HIV-suppressive factors produced by CD8+ T cells. Science 1995; 270: 1811–5.
- 85Wagner L, Yang OO, Garcia-Zepeda EA, Ge Y, Kalams SA, Walker BD, et al. β-chemokines are released from HIV-1-specific cytolytic T-cell granules complexed to proteoglycans. Nature 1998; 391: 908–11.
- 86Marshall NB, Swain SL. Cytotoxic CD4 T cells in antiviral immunity. Journal of biomedicine & biotechnology 2011; 2011: 954602.
- 87Arrode G, Finke JS, Zebroski H, Siegal FP, Steinman RM. CD8+ T cells from most HIV-1-infected patients, even when challenged with mature dendritic cells, lack functional recall memory to HIV gag but not other viruses. Eur J Immunol 2005; 35: 159–70.
- 88Chevalier MF, Jülg B, Pyo A, Flanders M, Ranasinghe S, Soghoian DZ, et al. HIV-1-specific interleukin-21+ CD4+ T cell responses contribute to durable viral control through the modulation of HIV-specific CD8+ T cell function. J Virol 2011; 85: 733–41.
- 89Giuliani E, Vassena L, Desimio MG, Buonomini AR, Malagnino V, Andreoni M, et al. Expression and function of NKG2D is impaired in CD8+ T cells of chronically HIV-1–infected patients without ART. J Acquir Immune Defic Syndr 2015; 70: 347–56.
- 90Mansky LM, Temin HM. Lower in vivo mutation rate of human immunodeficiency virus type 1 than that predicted from the fidelity of purified reverse transcriptase. J Virol 1995; 69: 5087–94.
- 91Ho DD, Neumann AU, Perelson AS, Chen W, Leonard JM, Markowitz M. Rapid turnover of plasma virions and CD4 lymphocytes in HIV-1 infection. Nature 1995; 373: 123–6.
- 92Schmitz JE, Kuroda MJ, Santra S, Sasseville VG, Simon MA, Lifton MA, et al. Control of viremia in simian immunodeficiency virus infection by CD8+ lymphocytes. Science 1999; 283: 857–60.
- 93Larsson M, Shankar EM, Che KF, Saeidi A, Ellegård R, Barathan M, et al. Molecular signatures of T-cell inhibition in HIV-1 infection. Retrovirology 2013; 10: 31.
- 94Shankar EM, Che KF, Messmer D, Lifson JD, Larsson M. Expression of a broad array of negative costimulatory molecules and Blimp-1 in T cells following priming by HIV-1 pulsed dendritic cells. Mol Med 2011; 17: 229.
- 95Freeman GJ, Wherry EJ, Ahmed R, Sharpe AH. Reinvigorating exhausted HIV-specific T cells via PD-1–PD-1 ligand blockade. J Exp Med 2006; 203: 2223–7.
- 96Okazaki T, Honjo T. The PD-1–PD-L pathway in immunological tolerance. Trends Immunol 2006; 27: 195–201.
- 97Barber DL, Wherry EJ, Masopust D, Zhu B, Allison JP, Sharpe AH, et al. Restoring function in exhausted CD8 T cells during chronic viral infection. Nature 2006; 439: 682–7.
- 98Wang X, Zhang Z, Zhang S, Fu J, Yao J, Jiao Y, et al. B7–H1 up-regulation impairs myeloid DC and correlates with disease progression in chronic HIV-1 infection. Eur J Immunol 2008; 38: 3226–36.
- 99Weiss L, Donkova-Petrini V, Caccavelli L, Balbo M, Carbonneil C, Levy Y. Human immunodeficiency virus–driven expansion of CD4+ CD25+ regulatory T cells, which suppress HIV-specific CD4 T-cell responses in HIV-infected patients. Blood 2004; 104: 3249–56.
- 100Che KF, Sabado RL, Shankar EM, Tjomsland V, Messmer D, Bhardwaj N, et al. HIV-1 impairs in vitro priming of naïve T cells and gives rise to contact-dependent suppressor T cells. Eur J Immunol 2010; 40: 2248–58.
- 101Salomon B, Lenschow DJ, Rhee L, Ashourian N, Singh B, Sharpe A, et al. B7/CD28 costimulation is essential for the homeostasis of the CD4+ CD25+ immunoregulatory T cells that control autoimmune diabetes. Immunity 2000; 12: 431–40.
- 102Read S, Malmström V, Powrie F. Cytotoxic T lymphocyte–associated antigen 4 plays an essential role in the function of CD25+ CD4+ regulatory cells that control intestinal inflammation. J Exp Med 2000; 192: 295–302.
- 103Wing K, Onishi Y, Prieto-Martin P, Yamaguchi T, Miyara M, Fehervari Z, et al. CTLA-4 control over Foxp3+ regulatory T cell function. Science 2008; 322: 271–5.
- 104Leng Q, Bentwich Z, Magen E, Kalinkovich A, Borkow G. CTLA-4 upregulation during HIV infection: association with anergy and possible target for therapeutic intervention. Aids 2002; 16: 519–29.
- 105Kaufmann DE, Walker BD. PD-1 and CTLA-4 inhibitory cosignaling pathways in HIV infection and the potential for therapeutic intervention. J Immunol 2009; 182: 5891–7.
- 106Piguet V, Trono D. Living in oblivion: HIV immune evasion. Seminars in Immunology 2001; 13: 51–7.
- 107Sheehy AM, Gaddis NC, Malim MH. The antiretroviral enzyme APOBEC3G is degraded by the proteasome in response to HIV-1 Vif. Nat Med 2003; 9: 1404–7.
- 108Song B. TRIM5alpha. In: HIV Interactions with Host Cell Proteins. Springer, 2009; 47–66..
10.1007/978-3-642-02175-6_3 Google Scholar
- 109Strebel K, Klimkait T, Martin MA. A novel gene of HIV-1, vpu, and its 16-kilodalton product. Science 1988; 241: 1221–3.
- 110Schindler M, Rajan D, Banning C, Wimmer P, Koppensteiner H, Iwanski A, et al. Vpu serine 52 dependent counteraction of tetherin is required for HIV-1 replication in macrophages, but not in ex vivo human lymphoid tissue. Retrovirology 2010; 7: 1.
- 111Izquierdo-Useros N, Naranjo-Gómez M, Erkizia I, Puertas MC, Borràs FE, Blanco J, et al. HIV and mature dendritic cells: Trojan exosomes riding the Trojan horse? PLoS Pathog 2010; 6: e1000740.
- 112Goujon C, Rivière L, Jarrosson-Wuilleme L, Bernaud J, Rigal D, Darlix J-L, et al. SIVSM/HIV-2 Vpx proteins promote retroviral escape from a proteasome-dependent restriction pathway present in human dendritic cells. Retrovirology 2007; 4: 2.
- 113Esparza J. A brief history of the global effort to develop a preventive HIV vaccine. Vaccine 2013; 31: 3502–18.
- 114Sheets RL, Zhou T, Knezevic I. Review of efficacy trials of HIV-1/AIDS vaccines and regulatory lessons learned: a review from a regulatory perspective. Biologicals 2015; 44: 73–89.
- 115Chanzu N, Ondondo B. Induction of potent and long-lived antibody and cellular immune responses in the genitorectal mucosa could be the critical determinant of HIV vaccine efficacy. Front Immunol 2014; 5: 202.
- 116Rafferty H, Sibeko S, Rowland-Jones S. How can we design better vaccines to prevent HIV infection in women? Front Microbiol 2014; 5: 572.
- 117Li S, Plebanski M, Smooker P, Gowans EJ. Editorial: why vaccines to HIV, HCV, and malaria have so far failed—challenges to developing vaccines against immunoregulating pathogens. Front Microbiol 2015; 6: 1318.