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Thirugnanam S, Rout N. A Perfect Storm: The Convergence of Aging, Human Immunodeficiency Virus Infection, and Inflammasome Dysregulation. Curr Issues Mol Biol 2024; 46:4768-4786. [PMID: 38785555 PMCID: PMC11119826 DOI: 10.3390/cimb46050287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/12/2024] [Accepted: 05/13/2024] [Indexed: 05/25/2024] Open
Abstract
The emergence of combination antiretroviral therapy (cART) has greatly transformed the life expectancy of people living with HIV (PWH). Today, over 76% of the individuals with HIV have access to this life-saving therapy. However, this progress has come with a new challenge: an increase in age-related non-AIDS conditions among patients with HIV. These conditions manifest earlier in PWH than in uninfected individuals, accelerating the aging process. Like PWH, the uninfected aging population experiences immunosenescence marked by an increased proinflammatory environment. This phenomenon is linked to chronic inflammation, driven in part by cellular structures called inflammasomes. Inflammatory signaling pathways activated by HIV-1 infection play a key role in inflammasome formation, suggesting a crucial link between HIV and a chronic inflammatory state. This review outlines the inflammatory processes triggered by HIV-1 infection and aging, with a focus on the inflammasomes. This review also explores current research regarding inflammasomes and potential strategies for targeting inflammasomes to mitigate inflammation. Further research on inflammasome signaling presents a unique opportunity to develop targeted interventions and innovative therapeutic modalities for combating HIV and aging-associated inflammatory processes.
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Affiliation(s)
- Siva Thirugnanam
- Division of Microbiology, Tulane National Primate Research Center, Covington, LA 70433, USA;
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Namita Rout
- Division of Microbiology, Tulane National Primate Research Center, Covington, LA 70433, USA;
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA 70112, USA
- Tulane Center for Aging, Tulane University School of Medicine, New Orleans, LA 70112, USA
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2
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Manickam C, Upadhyay AA, Woolley G, Kroll KW, Terry K, Broedlow CA, Klatt NR, Bosinger SE, Reeves RK. Natural killer-like B cells are a distinct but infrequent innate immune cell subset modulated by SIV infection of rhesus macaques. PLoS Pathog 2024; 20:e1012223. [PMID: 38739675 PMCID: PMC11115201 DOI: 10.1371/journal.ppat.1012223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 05/23/2024] [Accepted: 04/25/2024] [Indexed: 05/16/2024] Open
Abstract
Natural killer-like B (NKB) cells are unique innate immune cells expressing both natural killer (NK) and B cell receptors. As first responders to infection, they secrete IL-18 to induce a critical cascade of innate and adaptive immune cell infiltration and activation. However, limited research exists on the role of NKB cells in homeostasis and infection, largely due to incomplete and erroneous evaluations. To fill this knowledge gap, we investigated the expression of signaling and trafficking proteins, and the in situ localization and transcriptome of naïve NKB cells compared to conventionally-defined NK and B cells, as well as modulations of these cells in SIV infection. Intracellular signaling proteins and trafficking markers were expressed differentially on naïve NKB cells, with high expression of CD62L and Syk, and low expression of CD69, α4β7, FcRg, Zap70, and CD3z, findings which were more similar to B cells than NK cells. CD20+NKG2a/c+ NKB cells were identified in spleen, mesenteric lymph nodes (MLN), colon, jejunum, and liver of naïve rhesus macaques (RM) via tissue imaging, with NKB cell counts concentrated in spleen and MLN. For the first time, single cell RNA sequencing (scRNAseq), including B cell receptor (BCR) sequencing, of sorted NKB cells confirmed that NKB cells are unique. Transcriptomic analysis of naïve splenic NKB cells by scRNAseq showed that NKB cells undergo somatic hypermutation and express Ig receptors, similar to B cells. While only 15% of sorted NKB cells showed transcript expression of both KLRC1 (NKG2A) and MS4A1 (CD20) genes, only 5% of cells expressed KLRC1, MS4A1, and IgH/IgL transcripts. We observed expanded NKB frequencies in RM gut and buccal mucosa as early as 14 and 35 days post-SIV infection, respectively. Further, mucosal and peripheral NKB cells were associated with colorectal cytokine milieu and oral microbiome changes, respectively. Our studies indicate that NKB cells gated on CD3-CD14-CD20+NKG2A/C+ cells were inclusive of transcriptomically conventional B and NK cells in addition to true NKB cells, confounding accurate phenotyping and frequency recordings that could only be resolved using genomic techniques. Although NKB cells were clearly elevated during SIV infection and associated with inflammatory changes during infection, further interrogation is necessary to acurately identify the true phenotype and significance of NKB cells in infection and inflammation.
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Affiliation(s)
- Cordelia Manickam
- Division of Innate and Comparative Immunology, Center for Human Systems Immunology, Duke University, Durham, North Carolina, United States of America
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
| | - Amit A. Upadhyay
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
- Division of Microbiology and Immunology, Emory National Primate Research Center, Atlanta, Georgia, United States of America
| | - Griffin Woolley
- Division of Innate and Comparative Immunology, Center for Human Systems Immunology, Duke University, Durham, North Carolina, United States of America
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
| | - Kyle W. Kroll
- Division of Innate and Comparative Immunology, Center for Human Systems Immunology, Duke University, Durham, North Carolina, United States of America
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
| | - Karen Terry
- Division of Innate and Comparative Immunology, Center for Human Systems Immunology, Duke University, Durham, North Carolina, United States of America
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
| | - Courtney A. Broedlow
- Division of Surgical Outcomes and Precision Medicine Research, Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Nichole R. Klatt
- Division of Surgical Outcomes and Precision Medicine Research, Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Steven E. Bosinger
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
- Division of Microbiology and Immunology, Emory National Primate Research Center, Atlanta, Georgia, United States of America
| | - R. Keith Reeves
- Division of Innate and Comparative Immunology, Center for Human Systems Immunology, Duke University, Durham, North Carolina, United States of America
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
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3
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White CJ, Gausepohl AM, Wilkins HN, Eberhard CD, Orsburn BC, Williams DW. Spatial Heterogeneity of Brain Lipids in SIV-Infected Macaques Treated with Antiretroviral Therapy. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2024; 35:185-196. [PMID: 38288997 DOI: 10.1021/jasms.3c00276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Human immunodeficiency virus (HIV) infection continues to promote neurocognitive impairment, mood disorders, and brain atrophy, even in the modern era of viral suppression. Brain lipids are vulnerable to HIV-associated energetic strain and may contribute to HIV-associated neurologic dysfunction due to alterations in lipid breakdown and structural lipid composition. HIV neuropathology is region dependent, yet there has not been comprehensive characterization of the spatial heterogeneity of brain lipids during infection that possibly impacts neurologic function. To address this gap, we evaluated the spatial lipid distribution using matrix laser desorption/ionization imaging mass spectrometry (MALDI-IMS) across four brain regions (parietal cortex, midbrain, thalamus, and temporal cortex), as well as the kidney for a peripheral tissue control, in a simian immunodeficiency virus (SIV)-infected rhesus macaque treated with a course of antiretroviral therapies (ARTs). We assessed lipids indicative of fat breakdown [acylcarnitines (CARs)] and critical structural lipids [phosphatidylcholines (PCs) and phosphatidylethanolamines (PEs)] across fatty acid chain lengths and degrees of unsaturation. CARs with very long-chain, polyunsaturated fatty acids (PUFAs) were more abundant across all brain regions than shorter chain, saturated, or monounsaturated species. We observed distinct brain lipid distribution patterns for the CARs and PCs. However, no clear expression patterns emerged for PEs. Surprisingly, the kidney was nearly devoid of ions corresponding to PUFAs common in brain. PEs and PCs with PUFAs had little intensity and less density than other species, and only one CAR species was observed in kidney at high intensity. Overall, our study demonstrates the stark variation in structural phospholipids and lipid-energetic intermediates present in the virally suppressed SIV-macaque brain. These findings may be useful for identifying regional vulnerabilities to damage due to brain lipid changes in people with HIV.
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Affiliation(s)
- Cory J White
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Andrew M Gausepohl
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Hannah N Wilkins
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Colten D Eberhard
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Benjamin C Orsburn
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Dionna W Williams
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- Department of Medicine, Division of Clinical Pharmacology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- Department of Molecular Microbiology & Immunology, Johns Hopkins University School of Public Health, Baltimore, Maryland 21205, United States
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, Georgia 30322, United States
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4
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Pawar P, Gokavi J, Wakhare S, Bagul R, Ghule U, Khan I, Ganu V, Mukherjee A, Shete A, Rao A, Saxena V. MiR-155 Negatively Regulates Anti-Viral Innate Responses among HIV-Infected Progressors. Viruses 2023; 15:2206. [PMID: 38005883 PMCID: PMC10675553 DOI: 10.3390/v15112206] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/28/2023] [Accepted: 10/02/2023] [Indexed: 11/26/2023] Open
Abstract
HIV infection impairs host immunity, leading to progressive disease. An anti-retroviral treatment efficiently controls viremia but cannot completely restore the immune dysfunction in HIV-infected individuals. Both host and viral factors determine the rate of disease progression. Among the host factors, innate immunity plays a critical role; however, the mechanism(s) associated with dysfunctional innate responses are poorly understood among HIV disease progressors, which was investigated here. The gene expression profiles of TLRs and innate cytokines in HIV-infected (LTNPs and progressors) and HIV-uninfected individuals were examined. Since the progressors showed a dysregulated TLR-mediated innate response, we investigated the role of TLR agonists in restoring the innate functions of the progressors. The stimulation of PBMCs with TLR3 agonist-poly:(I:C), TLR7 agonist-GS-9620 and TLR9 agonist-ODN 2216 resulted in an increased expression of IFN-α, IFN-β and IL-6. Interestingly, the expression of IFITM3, BST-2, IFITM-3, IFI-16 was also increased upon stimulation with TLR3 and TLR7 agonists, respectively. To further understand the molecular mechanism involved, the role of miR-155 was explored. Increased miR-155 expression was noted among the progressors. MiR-155 inhibition upregulated the expression of TLR3, NF-κB, IRF-3, TNF-α and the APOBEC-3G, IFITM-3, IFI-16 and BST-2 genes in the PBMCs of the progressors. To conclude, miR-155 negatively regulates TLR-mediated cytokines as wel l as the expression of host restriction factors, which play an important role in mounting anti-HIV responses; hence, targeting miR-155 might be helpful in devising strategic approaches towards alleviating HIV disease progression.
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Affiliation(s)
- Puja Pawar
- Division of Immunology and Serology, ICMR-National AIDS Research Institute, Pune 411026, India; (P.P.); (J.G.); (S.W.); (V.G.); (A.S.)
| | - Jyotsna Gokavi
- Division of Immunology and Serology, ICMR-National AIDS Research Institute, Pune 411026, India; (P.P.); (J.G.); (S.W.); (V.G.); (A.S.)
| | - Shilpa Wakhare
- Division of Immunology and Serology, ICMR-National AIDS Research Institute, Pune 411026, India; (P.P.); (J.G.); (S.W.); (V.G.); (A.S.)
| | - Rajani Bagul
- Division of Clinical Sciences, ICMR-National AIDS Research Institute, Pune 411026, India; (R.B.); (U.G.); (A.R.)
| | - Ujjwala Ghule
- Division of Clinical Sciences, ICMR-National AIDS Research Institute, Pune 411026, India; (R.B.); (U.G.); (A.R.)
| | - Ishrat Khan
- Division of Virology, ICMR-National AIDS Research Institute, Pune 411026, India; (I.K.); (A.M.)
| | - Varada Ganu
- Division of Immunology and Serology, ICMR-National AIDS Research Institute, Pune 411026, India; (P.P.); (J.G.); (S.W.); (V.G.); (A.S.)
| | - Anupam Mukherjee
- Division of Virology, ICMR-National AIDS Research Institute, Pune 411026, India; (I.K.); (A.M.)
| | - Ashwini Shete
- Division of Immunology and Serology, ICMR-National AIDS Research Institute, Pune 411026, India; (P.P.); (J.G.); (S.W.); (V.G.); (A.S.)
| | - Amrita Rao
- Division of Clinical Sciences, ICMR-National AIDS Research Institute, Pune 411026, India; (R.B.); (U.G.); (A.R.)
| | - Vandana Saxena
- Division of Immunology and Serology, ICMR-National AIDS Research Institute, Pune 411026, India; (P.P.); (J.G.); (S.W.); (V.G.); (A.S.)
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5
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Isaacs T, Lehloenya R. HIV-associated photodermatitis in African populations. FRONTIERS IN ALLERGY 2023; 4:1159387. [PMID: 37216149 PMCID: PMC10192905 DOI: 10.3389/falgy.2023.1159387] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 04/14/2023] [Indexed: 05/24/2023] Open
Abstract
Photosensitive dermatoses are seen in 5% of HIV-infected persons. These include drug- and chemical-induced photoallergic and phototoxic reactions, chronic actinic dermatitis of HIV, photo lichenoid drug eruptions, and porphyria. Data on photodermatitis in HIV are limited to case reports and series. The pathogenesis is not completely understood and includes a th2 phenotype in HIV which results in impaired barrier function and resultant allergen sensitisation as well as immune dysregulation. The objective of this manuscript is to review the literature on the clinical phenotype, pathogenesis, role of photo and patch testing, outcomes, and treatment of photodermatitis in HIV in an African population.
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Lima ÉRG, Queiroz MAF, Lima SS, Machado LFA, Cayres-Vallinoto IMV, Vallinoto ACR, Figueiredo FADPL, Guerreiro JF, Guimarães Ishak MDO, Ishak R. CCR5∆32 and SDF1 3'A: Gene Variants, Expression and Influence on Biological Markers for the Clinical Progression to AIDS among HIV-1 Virus Controllers in a Mixed Population of the Amazon Region of Brazil. Int J Mol Sci 2023; 24:ijms24054958. [PMID: 36902388 PMCID: PMC10003039 DOI: 10.3390/ijms24054958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/24/2023] [Accepted: 01/26/2023] [Indexed: 03/08/2023] Open
Abstract
CCR5Δ32 and SDF1-3'A polymorphisms were investigated in a cohort of viremia controllers, without the use of therapy, along with their influence on CD4+ T lymphocytes (TLs), CD8+ TLs, and plasma viral load (VL). The samples were analyzed from 32 HIV-1-infected individuals classified as viremia controllers 1 and 2 and viremia non-controllers, from both sexes, mostly heterosexuals, paired with 300 individuals from a control group. CCR5∆32 polymorphism was identified by PCR amplification of a fragment of 189 bp for the wild-type allele and 157 bp for the allele with the ∆32 deletion. SDF1-3'A polymorphism was identified by PCR, followed by enzymatic digestion (restriction fragment length polymorphism) with the Msp I enzyme. The relative quantification of gene expression was performed by real-time PCR. The distribution of allele and genotype frequencies did not show significant differences between the groups. The gene expression of CCR5 and SDF1 was not different between the profiles of AIDS progression. There was no significant correlation between the progression markers (CD4+ TL/CD8+ TL and VL) and the CCR5∆32 polymorphism carrier status. The 3'A allele variant was associated with a marked loss of CD4+ TLs and a higher plasma VL. Neither CCR5∆32 nor SDF1-3'A was associated with viremia control or the controlling phenotype.
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Affiliation(s)
- Érica Ribeiro Gomes Lima
- Virus Laboratory, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, Brazil
| | - Maria Alice Freitas Queiroz
- Virus Laboratory, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, Brazil
- Correspondence: ; Tel.: +55-91-98864-4259
| | - Sandra Souza Lima
- Virus Laboratory, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, Brazil
| | | | | | | | | | - João Farias Guerreiro
- Human and Medical Genetics Laboratory, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, Brazil
| | | | - Ricardo Ishak
- Virus Laboratory, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, Brazil
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Galvão-Lima LJ, Zambuzi FA, Soares LS, Fontanari C, Meireles AFG, Brauer VS, Faccioli LH, Gama L, Figueiredo LTM, Bou-Habib DC, Frantz FG. HIV-1 Gag and Vpr impair the inflammasome activation and contribute to the establishment of chronic infection in human primary macrophages. Mol Immunol 2022; 148:68-80. [PMID: 35659727 DOI: 10.1016/j.molimm.2022.04.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/20/2022] [Accepted: 04/27/2022] [Indexed: 02/07/2023]
Abstract
The successful establishment of HIV-1 infection is related to inflammasome blocking or inactivation, which can result in the viral evasion of the immune responses and formation of reservoirs in several tissues. In this sense, we aimed to evaluate the viral and cellular mechanisms activated during HIV-1 infection in human primary macrophages that allow an effective viral replication in these cells. We found that resting HIV-1-infected macrophages, but not those activated in classical or alternative patterns, released IL-1β and other pro-inflammatory cytokines, and showed increased CXCL10 expression, without changes in the NLRP3, AIM2 or RIG-I inflammasome pathways. Also, similar levels of Casp-1, phosphorylated NF-κB (p65) and NLRP3 proteins were found in uninfected and HIV-1-infected macrophages. Likewise, no alterations were detected in ASC specks released in the culture supernatant after HIV-1 infection, suggesting that macrophages remain viable after infection. Using in silico prediction studies, we found that the HIV-1 proteins Gag and Vpr interact with several host proteins. Comparable levels of trans-LTB4 were found in the supernatants of uninfected and HIV-1-infected macrophages, whereas ROS production was impaired in infected cells, which was not reversed after the PMA stimulus. Immunofluorescence analysis showed structural alterations in the mitochondrial architecture and an increase of BIM in the cytoplasm of infected cells. Our data suggest that HIV-1 proteins Gag and Vpr, through interacting with cellular proteins in the early steps of infection, preclude the inflammasome activation and the development of effective immune responses, thus allowing the establishment of the infection.
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Affiliation(s)
- Leonardo J Galvão-Lima
- School of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirao Preto, Brazil; Laboratory of Technological Innovation in Health (LAIS), Hospital Universitário Onofre Lopes, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil
| | - Fabiana A Zambuzi
- School of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Luana S Soares
- School of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Caroline Fontanari
- School of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Aline F Galvão Meireles
- School of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Verônica S Brauer
- School of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Lúcia H Faccioli
- School of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Lúcio Gama
- Retrovirus Lab, Johns Hopkins University - School of Medicine, Baltimore, MD, USA; Vaccine Research Center, National Institute of Allergy and Infectious Diseases, Bethesda, MD, USA
| | - Luiz T M Figueiredo
- Virology Research Center, Medical School of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Dumith Chequer Bou-Habib
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil; National Institute of Science and Technology on Neuroimmunomodulation, Rio de Janeiro, Brazil
| | - Fabiani G Frantz
- School of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirao Preto, Brazil.
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Xia P, Xing XD, Yang CX, Liao XJ, Liu FH, Huang HH, Zhang C, Song JW, Jiao YM, Shi M, Jiang TJ, Zhou CB, Wang XC, He Q, Zeng QL, Wang FS, Zhang JY. Activation-induced pyroptosis contributes to the loss of MAIT cells in chronic HIV-1 infected patients. Mil Med Res 2022; 9:24. [PMID: 35619176 PMCID: PMC9137088 DOI: 10.1186/s40779-022-00384-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 05/13/2022] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Mucosal-associated invariant T (MAIT) cells are systemically depleted in human immunodeficiency virus type 1 (HIV-1) infected patients and are not replenished even after successful combined antiretroviral therapy (cART). This study aimed to identify the mechanism underlying MAIT cell depletion. METHODS In the present study, we applied flow cytometry, single-cell RNA sequencing and immunohistochemical staining to evaluate the characteristics of pyroptotic MAIT cells in a total of 127 HIV-1 infected individuals, including 69 treatment-naive patients, 28 complete responders, 15 immunological non-responders, and 15 elite controllers, at the Fifth Medical Center of Chinese PLA General Hospital, Beijing, China. RESULTS Single-cell transcriptomic profiles revealed that circulating MAIT cells from HIV-1 infected subjects were highly activated, with upregulation of pyroptosis-related genes. Further analysis revealed that increased frequencies of pyroptotic MAIT cells correlated with markers of systemic T-cell activation, microbial translocation, and intestinal damage in cART-naive patients and poor CD4+ T-cell recovery in long-term cART patients. Immunohistochemical staining revealed that MAIT cells in the gut mucosa of HIV-1 infected patients exhibited a strong active gasdermin-D (GSDMD, marker of pyroptosis) signal near the cavity side, suggesting that these MAIT cells underwent active pyroptosis in the colorectal mucosa. Increased levels of the proinflammatory cytokines interleukin-12 (IL-12) and IL-18 were observed in HIV-1 infected patients. In addition, activated MAIT cells exhibited an increased pyroptotic phenotype after being triggered by HIV-1 virions, T-cell receptor signals, IL-12 plus IL-18, and combinations of these factors, in vitro. CONCLUSIONS Activation-induced MAIT cell pyroptosis contributes to the loss of MAIT cells in HIV-1 infected patients, which could potentiate disease progression and poor immune reconstitution.
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Affiliation(s)
- Peng Xia
- Senior Department of Infectious Diseases, the Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100039, China.,Department of Infectious Diseases and Hepatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Xu-Dong Xing
- Biomedical Pioneering Innovation Center (BIOPIC), School of Life Sciences, Peking University, Beijing, 100871, China
| | - Cui-Xian Yang
- Yunnan Infectious Disease Hospital, Kunming, 650301, China
| | - Xue-Jiao Liao
- the Third People's Hospital of Shenzhen, School of Medicine, Southern University of Science and Technology, Shenzhen, 518112, Guangzhou, China
| | - Fu-Hua Liu
- Senior Department of Infectious Diseases, the Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100039, China.,Department of Infectious Diseases and Hepatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Hui-Huang Huang
- Senior Department of Infectious Diseases, the Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Chao Zhang
- Senior Department of Infectious Diseases, the Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Jin-Wen Song
- Senior Department of Infectious Diseases, the Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Yan-Mei Jiao
- Senior Department of Infectious Diseases, the Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Ming Shi
- Senior Department of Infectious Diseases, the Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Tian-Jun Jiang
- Senior Department of Infectious Diseases, the Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Chun-Bao Zhou
- Senior Department of Infectious Diseases, the Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Xi-Cheng Wang
- Yunnan Infectious Disease Hospital, Kunming, 650301, China
| | - Qing He
- the Third People's Hospital of Shenzhen, School of Medicine, Southern University of Science and Technology, Shenzhen, 518112, Guangzhou, China
| | - Qing-Lei Zeng
- Department of Infectious Diseases and Hepatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
| | - Fu-Sheng Wang
- Senior Department of Infectious Diseases, the Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100039, China.
| | - Ji-Yuan Zhang
- Senior Department of Infectious Diseases, the Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Savaid Medical School, University of Chinese Academy of Sciences, Beijing, 100039, China.
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9
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Shi Y, Su J, Chen R, Wei W, Yuan Z, Chen X, Wang X, Liang H, Ye L, Jiang J. The Role of Innate Immunity in Natural Elite Controllers of HIV-1 Infection. Front Immunol 2022; 13:780922. [PMID: 35211115 PMCID: PMC8861487 DOI: 10.3389/fimmu.2022.780922] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 01/19/2022] [Indexed: 12/26/2022] Open
Abstract
The natural process of human immunodeficiency virus type 1(HIV-1) infection is characterized by high viral load, immune cell exhaustion, and immunodeficiency, which eventually leads to the stage of acquired immunodeficiency syndrome (AIDS) and opportunistic infections. Rapidly progressing HIV-1 individuals often die of AIDS several years after infection without treatment. The promotion of ART greatly prolongs the survival time of HIV-infected persons. However, some patients have incomplete immune function reconstruction after ART due to latent storage of HIV-infected cells. Therefore, how to achieve a functional cure has always been the focus and hot spot of global AIDS research. Fortunately, the emergence of ECs/LTNPs who can control virus replication naturally has ignited new hope for realizing a functional cure for AIDS. Recently, a special category of infected individuals has attracted attention that can delay the progression of the disease more rigorously than the natural progression of HIV-1 infection described above. These patients are characterized by years of HIV-1 infection, long-term asymptomatic status, and normal CD4+T cell count without ART, classified as HIV-infected long-term nonprogressors (LTNPs) and elite controllers (ECs). Numerous studies have shown that the host and virus jointly determine the progression of HIV-1 infection, in which the level of innate immunity activation plays an important role. As the first line of defense against pathogen invasion, innate immunity is also a bridge to induce adaptive immunity. Compared with natural progressors, innate immunity plays an antiviral role in HIV-1 infection by inducing or activating many innate immune-related factors in the natural ECs. Learning the regulation of ECs immunity, especially the innate immunity in different characteristics, and thus studying the mechanism of the control of disease progression naturally, will contribute to the realization of the functional cure of AIDS. Therefore, this review will explore the relationship between innate immunity and disease progression in ECs of HIV-1 infection from the aspects of innate immune cells, signaling pathways, cytokines, which is helpful to provide new targets and theoretical references for the functional cure, prevention and control of AIDS, and development of a vaccine.
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Affiliation(s)
- Yuting Shi
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China
| | - Jinming Su
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Joint Laboratory for Emerging Infectious Diseases in China (Guangxi)-ASEAN, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Rongfeng Chen
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Joint Laboratory for Emerging Infectious Diseases in China (Guangxi)-ASEAN, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Wudi Wei
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Joint Laboratory for Emerging Infectious Diseases in China (Guangxi)-ASEAN, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Zongxiang Yuan
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China
| | - Xiu Chen
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China
| | - Xinwei Wang
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China
| | - Hao Liang
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Joint Laboratory for Emerging Infectious Diseases in China (Guangxi)-ASEAN, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Li Ye
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Joint Laboratory for Emerging Infectious Diseases in China (Guangxi)-ASEAN, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Junjun Jiang
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Joint Laboratory for Emerging Infectious Diseases in China (Guangxi)-ASEAN, Life Sciences Institute, Guangxi Medical University, Nanning, China
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10
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Carrasco I, Tarancon-Diez L, Vázquez-Alejo E, Jiménez de Ory S, Sainz T, Apilanez M, Epalza C, Guillén S, Tomás Ramos J, Díez C, Bernardino JI, Iribarren JA, Zamora A, Muñoz-Fernández MÁ, Navarro ML. Innate and adaptive abnormalities in youth with vertically acquired HIV through a multicentre cohort in Spain. J Int AIDS Soc 2021; 24:e25804. [PMID: 34672108 PMCID: PMC8528666 DOI: 10.1002/jia2.25804] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 07/29/2021] [Indexed: 12/25/2022] Open
Abstract
Introduction Immune abnormalities have been described among youth with vertically acquired HIV (YWVH) despite antiretroviral treatment (ART). The CD4/CD8 ratio could be a useful prognostic marker. We assess immune activation and senescence in a cohort of YWVH in comparison to youth without vertically acquired HIV. Methods YWVH under suppressive ART were included and compared to a group of HIV‐negative donors (HD) matched by age and sex, from September 2019 to September 2020. Subset distribution and expression of activation, maturation, senescence and exhaustion markers on T and NK cells were studied on peripheral blood mononuclear cells by multiparametric flow cytometry. Results Thirty‐two YWVH (median age: 24.4 years (interquartile range: 22.5 to 28.3 years)) were included. Among YWVH, CD4‐ and CD8‐T cells showed high levels of activation (HLA‐DR/CD38), IL‐7 receptor expression (CD127) and exhaustion (TIM‐3). Regarding NK cells, YWVH showed increased levels of activation and exhaustion markers compared to HD. Strong inverted correlations were observed between T‐cell activation (HLA‐DR/CD38), senescence (CD57) and exhaustion (TIGIT, PD‐1) levels with the CD4/CD8 ratio among YWVH. HLA‐DR, CD69, NKG2D and NKG2A expression levels on NK cells also correlated with the CD4/CD8 ratio. Age at ART initiation was directly associated with higher frequency of CD16high NK‐cell subsets, exhaustion T‐cell levels (CD57, TIM3) and NK cells activation levels. Conclusions Immunological changes associated with vertically acquired HIV, characterized by increased activation and exhaustion levels in innate and adaptive immune components, are only partially restored by ART. The CD4/CD8 ratio can be a useful marker of disease progression for routine clinical practice.
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Affiliation(s)
- Itzíar Carrasco
- Infectious Diseases in Paediatric Population, Gregorio Marañón Research Institute (IiSGM) and University Hospital, Madrid, Spain.,Universidad Complutense de Madrid, Madrid, Spain
| | - Laura Tarancon-Diez
- Immunology Section, Inmuno-Biology Molecular Laboratory, Gregorio Marañón University General Hospital (HGUGM), Gregorio Marañón Health Research Institute (IiSGM), Spanish HIV HGM BioBank, Madrid, Spain
| | - Elena Vázquez-Alejo
- Immunology Section, Inmuno-Biology Molecular Laboratory, Gregorio Marañón University General Hospital (HGUGM), Gregorio Marañón Health Research Institute (IiSGM), Spanish HIV HGM BioBank, Madrid, Spain
| | - Santiago Jiménez de Ory
- Infectious Diseases in Paediatric Population, Gregorio Marañón Research Institute (IiSGM) and University Hospital, Madrid, Spain
| | - Talía Sainz
- Department of Paediatrics, La Paz Research Institute (IdiPAZ) and University Hospital, Madrid, Spain
| | - Miren Apilanez
- Department of Paediatrics, Donostia University Hospital, País Vasco, Spain
| | - Cristina Epalza
- Department of Paediatrics, 12 de Octubre University Hospital, Madrid, Spain
| | - Sara Guillén
- Department of Paediatrics, Getafe University Hospital, Madrid, Spain
| | - José Tomás Ramos
- Department of Paediatrics, Clínico San Carlos University Hospital, Madrid, Spain
| | - Cristina Díez
- Department Infectious Diseases, Gregorio Marañón Research Institute and University Hospital, Madrid, Spain
| | - Jose Ignacio Bernardino
- Department of Infectious Diseases, La Paz Research Institute (IdiPAZ) and University Hospital, Madrid, Spain
| | | | - Angielys Zamora
- Biochemistry Section, Gregorio Marañón University Hospital, Madrid, Spain
| | - María Ángeles Muñoz-Fernández
- Immunology Section, Inmuno-Biology Molecular Laboratory, Gregorio Marañón University General Hospital (HGUGM), Gregorio Marañón Health Research Institute (IiSGM), Spanish HIV HGM BioBank, Madrid, Spain
| | - María Luisa Navarro
- Infectious Diseases in Paediatric Population, Gregorio Marañón Research Institute (IiSGM) and University Hospital, Madrid, Spain.,Universidad Complutense de Madrid, Madrid, Spain
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- Infectious Diseases in Paediatric Population, Gregorio Marañón Research Institute (IiSGM) and University Hospital, Madrid, Spain
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11
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Jones R, Manickam C, Ram DR, Kroll K, Hueber B, Woolley G, Shah SV, Smith S, Varner V, Reeves RK. Systemic and mucosal mobilization of granulocyte subsets during lentiviral infection. Immunology 2021; 164:348-357. [PMID: 34037988 PMCID: PMC8442246 DOI: 10.1111/imm.13376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/28/2021] [Accepted: 04/28/2021] [Indexed: 11/30/2022] Open
Abstract
Granulocytes mediate broad immunoprotection through phagocytosis, extracellular traps, release of cytotoxic granules, antibody effector functions and recruitment of other immune cells against pathogens. However, descriptions of granulocytes in HIV infection and mucosal tissues are limited. Our goal was to characterize granulocyte subsets in systemic, mucosal and lymphoid tissues during lentiviral infection using the rhesus macaque (RM) model. Mononuclear cells from jejunum, colon, cervix, vagina, lymph nodes, spleen, liver and whole blood from experimentally naïve and chronically SHIVsf162p3-infected RM were analysed by microscopy and polychromatic flow cytometry. Granulocytes were identified using phenotypes designed specifically for RM: eosinophils-CD45+ CD66+ CD49d+ ; neutrophils-CD45+ CD66+ CD14+ ; and basophils-CD45+ CD123+ FcRε+ . Nuclear visualization with DAPI staining and surface marker images by ImageStream (cytometry/microscopy) further confirmed granulocytic phenotypes. Flow cytometric data showed that all RM granulocytes expressed CD32 (FcRγII) but did not express CD16 (FcRγIII). Additionally, constitutive expression of CD64 (FcRγI) on neutrophils and FcRε on basophils indicates the differential expression of Fc receptors on granulocyte subsets. Granulocytic subsets in naïve whole blood ranged from 25·4% to 81·5% neutrophils, 0·59% to 13·3% eosinophils and 0·059% to 1·8% basophils. Interestingly, elevated frequencies of circulating neutrophils, colorectal neutrophils and colorectal eosinophils were all observed in chronic lentiviral disease. Conversely, circulating basophils, jejunal eosinophils, vaginal neutrophils and vaginal eosinophils of SHIVsf162p3-infected RM declined in frequency. Overall, our data suggest modulation of granulocytes in chronic lentiviral infection, most notably in the gastrointestinal mucosae where a significant inflammation and disruption occurs in lentivirus-induced disease. Furthermore, granulocytes may migrate to inflamed tissues during infection and could serve as targets of immunotherapeutic intervention.
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Affiliation(s)
- Rhianna Jones
- Center for Virology and Vaccine ResearchBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA
| | - Cordelia Manickam
- Center for Virology and Vaccine ResearchBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA
| | - Daniel R. Ram
- Center for Virology and Vaccine ResearchBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA
| | - Kyle Kroll
- Center for Virology and Vaccine ResearchBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA
| | - Brady Hueber
- Center for Virology and Vaccine ResearchBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA
| | - Griffin Woolley
- Center for Virology and Vaccine ResearchBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA
| | - Spandan V. Shah
- Center for Virology and Vaccine ResearchBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA
| | - Scott Smith
- Center for Virology and Vaccine ResearchBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA
| | - Valerie Varner
- Center for Virology and Vaccine ResearchBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA
| | - R. Keith Reeves
- Center for Virology and Vaccine ResearchBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA
- Ragon Institute of Massachusetts General Hospital, MIT, and HarvardCambridgeMAUSA
- Division of Innate and Comparative Immunology, Center for Human Systems ImmunologyDuke University School of MedicineDurhamNCUSA
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12
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Hartana CA, Rassadkina Y, Gao C, Martin-Gayo E, Walker BD, Lichterfeld M, Yu XG. Long noncoding RNA MIR4435-2HG enhances metabolic function of myeloid dendritic cells from HIV-1 elite controllers. J Clin Invest 2021; 131:146136. [PMID: 33938445 PMCID: PMC8087208 DOI: 10.1172/jci146136] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 03/11/2021] [Indexed: 12/24/2022] Open
Abstract
Restriction of HIV-1 replication in elite controllers (ECs) is frequently attributed to T cell-mediated immune responses, while the specific contribution of innate immune cells is less clear. Here, we demonstrate an upregulation of the host long noncoding RNA (lncRNA) MIR4435-2HG in primary myeloid dendritic cells (mDCs) from ECs. Elevated expression of this lncRNA in mDCs was associated with a distinct immunometabolic profile, characterized by increased oxidative phosphorylation and glycolysis activities in response to TLR3 stimulation. Using functional assays, we show that MIR4435-2HG directly influenced the metabolic state of mDCs, likely through epigenetic mechanisms involving H3K27ac enrichment at an intronic enhancer in the RPTOR gene locus, the main component of the mammalian target of rapamycin complex 1 (mTORC1). Together, these results suggest a role of MIR4435-2HG for enhancing immunometabolic activities of mDCs in ECs through targeted epigenetic modifications of a member of the mTOR signaling pathway.
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Affiliation(s)
| | | | - Ce Gao
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, USA
| | - Enrique Martin-Gayo
- Immunology Unit, Universidad Autónoma de Madrid, Hospital Universitario la Princesa, Madrid, Spain
| | - Bruce D. Walker
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, USA
- Institute for Medical Engineering and Sciences, and
- Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Mathias Lichterfeld
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, USA
- Infectious Disease Division, Brigham and Women’s Hospital, Boston, Massachusetts, USA
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Xu G. Yu
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, USA
- Infectious Disease Division, Brigham and Women’s Hospital, Boston, Massachusetts, USA
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13
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The Impact of microRNA Regulation on Immune Recovery in HIV-1-Infected Patients Treated during Acute Infection: A Pilot Study. BIOMED RESEARCH INTERNATIONAL 2020; 2020:5782927. [PMID: 33354568 PMCID: PMC7735831 DOI: 10.1155/2020/5782927] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 10/29/2020] [Accepted: 11/15/2020] [Indexed: 12/02/2022]
Abstract
microRNAs (miRNAs) are small noncoding RNAs involved in a large range of cellular activities and can be used as biomarkers and indicators for diagnosis. We investigated the alterations in miRNA profiles in immune reconstituted vs. nonimmune reconstituted HIV-1-infected individuals to assess the association between miRNAs and the occurrence of immunological nonresponses, with the aim of searching for miRNA-based biomarkers for these HIV-1-infected individuals. Thirteen immunological responders (IRs) and 12 immunological nonresponders (INRs) were recruited, and RNA was collected from the plasma samples of the 25 HIV-1-infected individuals at both baseline and after 24 months of maintaining virological suppression (VS). Next-generation sequencing was used to detect miRNAs and evaluate the expression differences in miRNAs between IR and INR patients and between baseline and after 24 months of maintaining VS. Samples from 13 IRs and 11 INRs were successfully sequenced. The horizontal comparison of differentially expressed miRNAs between the groups and the longitudinal comparison of differentially expressed miRNAs between baseline and after 24 months of maintaining VS showed that a large proportion of miRNAs in INRs are downregulated compared to the levels in IRs. We also found that the miRNA let-7d-5p was downregulated in 9 INRs but only in 2 IRs by more than 2-fold. The difference was significant. In summary, these results demonstrate for the first time that a large proportion of miRNAs are downregulated in INRs compared with IRs, and the miRNA let-7d-5p is a potential biomarker for INRs.
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14
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Mojoli A, Gonçalves BS, Temerozo JR, Cister-Alves B, Geddes V, Herlinger A, Aguiar RS, Pilotto JH, Saraiva EM, Bou-Habib DC. Neutrophil extracellular traps from healthy donors and HIV-1-infected individuals restrict HIV-1 production in macrophages. Sci Rep 2020; 10:19603. [PMID: 33177532 PMCID: PMC7658358 DOI: 10.1038/s41598-020-75357-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 10/14/2020] [Indexed: 02/07/2023] Open
Abstract
Neutrophils release extracellular traps (NETs) after interaction with microorganisms and physiological or synthetic products. NETs consist of decondensed chromatin complexed with proteins, some of them with microbicidal properties. Because NETs can modulate the functioning of HIV-1 target cells, we aimed to verify whether they modify HIV-1 replication in macrophages. We found that exposure of HIV-1-infected macrophages to NETs resulted in significant inhibition of viral replication. The NET anti-HIV-1 action was independent of other soluble factors released by the activated neutrophils, but otherwise dependent on the molecular integrity of NETs, since NET-treatment with protease or DNase abolished this effect. NETs induced macrophage production of the anti-HIV-1 β-chemokines Rantes and MIP-1β, and reduced the levels of integrated HIV-1 DNA in the macrophage genome, which may explain the decreased virus production by infected macrophages. Moreover, the residual virions released by NET-treated HIV-1-infected macrophages lost infectivity. In addition, elevated levels of DNA-elastase complexes were detected in the plasma from HIV-1-infected individuals, and neutrophils from these patients released NETs, which also inhibited HIV-1 replication in in vitro infected macrophages. Our results reveal that NETs may function as an innate immunity mechanism able to restrain HIV-1 production in macrophages.
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Affiliation(s)
- Andrés Mojoli
- Laboratory on Thymus Research, Oswaldo Cruz Institute/Fiocruz, Av. Brasil, 4365, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil
| | - Barbara Simonson Gonçalves
- Laboratory on Thymus Research, Oswaldo Cruz Institute/Fiocruz, Av. Brasil, 4365, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil
| | - Jairo R Temerozo
- Laboratory on Thymus Research, Oswaldo Cruz Institute/Fiocruz, Av. Brasil, 4365, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil.,National Institute of Science and Technology on Neuroimmunomodulation, Rio de Janeiro, Brazil
| | - Bruno Cister-Alves
- Laboratory on Thymus Research, Oswaldo Cruz Institute/Fiocruz, Av. Brasil, 4365, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil
| | - Victor Geddes
- Laboratory of Molecular Virology, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alice Herlinger
- Laboratory of Molecular Virology, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Renato Santana Aguiar
- Laboratory of Molecular Virology, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - José Henrique Pilotto
- Laboratory of AIDS and Molecular Immunology, Oswaldo Cruz Institute/Fiocruz, Rio de Janeiro, Brazil
| | - Elvira M Saraiva
- Laboratory of Immunobiology of Leishmaniasis, Department of Immunology, Paulo de Goes Institute of Microbiology, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho 373, Bloco D/D1-44, Ilha do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Dumith Chequer Bou-Habib
- Laboratory on Thymus Research, Oswaldo Cruz Institute/Fiocruz, Av. Brasil, 4365, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil. .,National Institute of Science and Technology on Neuroimmunomodulation, Rio de Janeiro, Brazil.
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15
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Yu H, Li C, Wang X, Duan J, Yang N, Xie L, Yuan Y, Li S, Bi C, Yang B, Li Y. Techniques and Strategies for Potential Protein Target Discovery and Active Pharmaceutical Molecule Screening in a Pandemic. J Proteome Res 2020; 19:4242-4258. [PMID: 32957788 PMCID: PMC7640955 DOI: 10.1021/acs.jproteome.0c00372] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Indexed: 12/12/2022]
Abstract
Viruses remain a major challenge in the fierce fight against diseases. There have been many pandemics caused by various viruses throughout the world over the years. Recently, the global outbreak of COVID-19 has had a catastrophic impact on human health and the world economy. Antiviral drug treatment has become another essential means to overcome pandemics in addition to vaccine development. How to quickly find effective drugs that can control the development of a pandemic is a hot issue that still needs to be resolved in medical research today. To accelerate the development of drugs, it is necessary to target the key target proteins in the development of the pandemic, screen active molecules, and develop reliable methods for the identification and characterization of target proteins based on the active ingredients of drugs. This article discusses key target proteins and their biological mechanisms in the progression of COVID-19 and other major epidemics. We propose a model based on these foundations, which includes identifying potential core targets, screening potential active molecules of core targets, and verifying active molecules. This article summarizes the related innovative technologies and methods. We hope to provide a reference for the screening of drugs related to pandemics and the development of new drugs.
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Affiliation(s)
| | | | | | - Jingyi Duan
- Tianjin University of Traditional
Chinese Medicine, No. 10, Poyang Lake Road, West Zone, Tuanbo New City, Jinghai District, Tianjin, 301617, China
| | - Na Yang
- Tianjin University of Traditional
Chinese Medicine, No. 10, Poyang Lake Road, West Zone, Tuanbo New City, Jinghai District, Tianjin, 301617, China
| | - Lijuan Xie
- Tianjin University of Traditional
Chinese Medicine, No. 10, Poyang Lake Road, West Zone, Tuanbo New City, Jinghai District, Tianjin, 301617, China
| | - Yu Yuan
- Tianjin University of Traditional
Chinese Medicine, No. 10, Poyang Lake Road, West Zone, Tuanbo New City, Jinghai District, Tianjin, 301617, China
| | - Shanze Li
- Tianjin University of Traditional
Chinese Medicine, No. 10, Poyang Lake Road, West Zone, Tuanbo New City, Jinghai District, Tianjin, 301617, China
| | - Chenghao Bi
- Tianjin University of Traditional
Chinese Medicine, No. 10, Poyang Lake Road, West Zone, Tuanbo New City, Jinghai District, Tianjin, 301617, China
| | - Bin Yang
- Tianjin University of Traditional
Chinese Medicine, No. 10, Poyang Lake Road, West Zone, Tuanbo New City, Jinghai District, Tianjin, 301617, China
| | - Yubo Li
- Tianjin University of Traditional
Chinese Medicine, No. 10, Poyang Lake Road, West Zone, Tuanbo New City, Jinghai District, Tianjin, 301617, China
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16
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Jiang J, Hu X, Li W, Liu J, Liang B, Chen H, Huang J, Zang N, Ning C, Liao Y, Chen R, Lai J, Chu J, Pan P, Cui P, Tang Q, Chen X, Liang H, Ye L. Enhanced Signaling Through the TLR9 Pathway Is Associated With Resistance to HIV-1 Infection in Chinese HIV-1-Exposed Seronegative Individuals. Front Immunol 2020; 11:1050. [PMID: 32547554 PMCID: PMC7274031 DOI: 10.3389/fimmu.2020.01050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 04/30/2020] [Indexed: 12/18/2022] Open
Abstract
Innate immunity is the first line of defense against invading pathogens and may mediate HIV-1 resistance in HIV-1–exposed seronegative (HESN) individuals. This study aims to identify components of innate immunity that confer natural HIV-1 resistance in Chinese HESN individuals. Specifically, we compared the expression levels of Toll-like receptors (TLRs) and associated pathway molecules in peripheral blood mononuclear cells (PBMCs), monocytes/macrophages, and plasma obtained from HESN and control individuals. HESN individuals had higher expression of TLR9, IRF7, IFN-α/β, RANTES, and MIP-1α/1β in PBMCs and plasma than control subjects. Upon TLR9 stimulation, significantly higher expression of TLR9 and IRF7, as well as higher production of IFN-α/β, RANTES, and MIP-1α/1β, was observed in PBMCs and monocytes/macrophages from HESN individuals than in the corresponding cells from control individuals. More importantly, both with and without TLR9 stimulation, the levels of HIV-1 replication in monocyte-derived macrophages (MDMs) from HESN individuals were significantly lower than those in MDMs from control individuals. These data suggest that increased TLR9 activity and subsequent release of antiviral factors contribute to protection against HIV-1 in HESN individuals.
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Affiliation(s)
- Junjun Jiang
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Xi Hu
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China
| | - Wenwei Li
- Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Jie Liu
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Bingyu Liang
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Hui Chen
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Jiegang Huang
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Ning Zang
- Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Chuanyi Ning
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Yanyan Liao
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Rongfeng Chen
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Jingzhen Lai
- Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Jiemei Chu
- Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Peijiang Pan
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Ping Cui
- Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Qiao Tang
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Xiu Chen
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Hao Liang
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
| | - Li Ye
- Guangxi Key Laboratory of AIDS Prevention and Treatment, School of Public Health, Guangxi Medical University, Nanning, China.,Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, China
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17
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Waters R, Ndengane M, Abrahams MR, Diedrich CR, Wilkinson RJ, Coussens AK. The Mtb-HIV syndemic interaction: why treating M. tuberculosis infection may be crucial for HIV-1 eradication. Future Virol 2020; 15:101-125. [PMID: 32273900 PMCID: PMC7132588 DOI: 10.2217/fvl-2019-0069] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Accelerated tuberculosis and AIDS progression seen in HIV-1 and Mycobacterium tuberculosis (Mtb)-coinfected individuals indicates the important interaction between these syndemic pathogens. The immunological interaction between HIV-1 and Mtb has been largely defined by how the virus exacerbates tuberculosis disease pathogenesis. Understanding of the mechanisms by which pre-existing or subsequent Mtb infection may favor the replication, persistence and progression of HIV, is less characterized. We present a rationale for the critical consideration of ‘latent’ Mtb infection in HIV-1 prevention and cure strategies. In support of this position, we review evidence of the effect of Mtb infection on HIV-1 acquisition, replication and persistence. We propose that ‘latent’ Mtb infection may have considerable impact on HIV-1 pathogenesis and the continuing HIV-1 epidemic in sub-Saharan Africa.
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Affiliation(s)
- Robyn Waters
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease & Molecular Medicine, University of Cape Town, Observatory 7925, WC, South Africa.,Department of Medicine, University of Cape Town, Observatory 7925, WC, South Africa
| | - Mthawelanga Ndengane
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease & Molecular Medicine, University of Cape Town, Observatory 7925, WC, South Africa.,Department of Pathology, University of Cape Town, Observatory 7925, WC, South Africa
| | - Melissa-Rose Abrahams
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease & Molecular Medicine, University of Cape Town, Observatory 7925, WC, South Africa.,Department of Pathology, University of Cape Town, Observatory 7925, WC, South Africa
| | - Collin R Diedrich
- Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Robert J Wilkinson
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease & Molecular Medicine, University of Cape Town, Observatory 7925, WC, South Africa.,Department of Medicine, University of Cape Town, Observatory 7925, WC, South Africa.,Department of Infectious Diseases, Imperial College London, London W2 1PG, United Kingdom.,The Francis Crick Institute, London NW1 1AT, United Kingdom
| | - Anna K Coussens
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease & Molecular Medicine, University of Cape Town, Observatory 7925, WC, South Africa.,Department of Pathology, University of Cape Town, Observatory 7925, WC, South Africa.,Infectious Diseases and Immune Defence Division, The Walter & Eliza Hall Institute of Medical Research, Parkville 3279, VIC, Australia.,Division of Medical Biology, Faculty of Medicine, Dentistry & Health Sciences, University of Melbourne, Parkville 3279, VIC, Australia
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18
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Flores-Torres AS, Salinas-Carmona MC, Salinas E, Rosas-Taraco AG. Eosinophils and Respiratory Viruses. Viral Immunol 2019; 32:198-207. [PMID: 31140942 DOI: 10.1089/vim.2018.0150] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Eosinophils have been mainly associated with parasitic infection and pathologies such as asthma. Some patients with asthma present a high number of eosinophils in their airways. Since respiratory viruses are associated with asthma exacerbations, several studies have evaluated the role of eosinophils against respiratory viruses. Eosinophils contain and produce molecules with antiviral activity, including RNases and reactive nitrogen species. They can also participate in adaptive immunity, serving as antigen-presenting cells. Eosinophil antiviral response has been demonstrated against some respiratory viruses in vitro and in vivo, including respiratory syncytial virus and influenza. Given the implication of respiratory viruses in asthma, the eosinophil antiviral role might be an important factor to consider in this pathology.
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Affiliation(s)
- Armando S Flores-Torres
- 1 Department of Immunology, Universidad Autónoma de Nuevo León, Facultad de Medicina y Hospital Universitario "Dr. Jose E. Gonzalez," Monterrey, Nuevo León, Mexico
| | - Mario C Salinas-Carmona
- 1 Department of Immunology, Universidad Autónoma de Nuevo León, Facultad de Medicina y Hospital Universitario "Dr. Jose E. Gonzalez," Monterrey, Nuevo León, Mexico
| | - Eva Salinas
- 2 Department of Microbiology, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Aguascalientes, Mexico
| | - Adrian G Rosas-Taraco
- 1 Department of Immunology, Universidad Autónoma de Nuevo León, Facultad de Medicina y Hospital Universitario "Dr. Jose E. Gonzalez," Monterrey, Nuevo León, Mexico
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19
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Saxena M, Sabado RL, La Mar M, Mohri H, Salazar AM, Dong H, Correa Da Rosa J, Markowitz M, Bhardwaj N, Miller E. Poly-ICLC, a TLR3 Agonist, Induces Transient Innate Immune Responses in Patients With Treated HIV-Infection: A Randomized Double-Blinded Placebo Controlled Trial. Front Immunol 2019; 10:725. [PMID: 31024557 PMCID: PMC6467168 DOI: 10.3389/fimmu.2019.00725] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 03/18/2019] [Indexed: 01/31/2023] Open
Abstract
Objective: Toll-like receptor-3 agonist Poly-ICLC has been known to activate immune cells and induce HIV replication in pre-clinical experiments. In this study we investigated if Poly-ICLC could be used for disrupting HIV latency while simultaneously enhancing innate immune responses. Design: This was a randomized, placebo-controlled, double-blinded trial in aviremic, cART-treated HIV-infected subjects. Participants (n = 15) were randomized 3:1 to receive two consecutive daily doses of Poly-ICLC (1.4 mg subcutaneously) vs. placebo. Subjects were observed for adverse events, immune activation, and viral replication. Methods: Besides primary outcomes of safety and tolerability, several longitudinal immune parameters were evaluated including immune cell phenotype and function via flowcytometry, ELISA, and transcriptional profiling. PCR assays for plasma HIV-1 RNA, CD4+ T cell-associated HIV-1 RNA, and proviral DNA were performed to measure HIV reservoirs and latency. Results: Poly-ICLC was overall safe and well-tolerated. Poly-ICLC-related adverse events were Grade 1/2, with the exception of one Grade 3 neutropenia which was short-lived. Mild Injection site reactions were observed in nearly all participants in the Poly-ICLC arm. Transcriptional analyses revealed upregulation of innate immune pathways in PBMCs following Poly-ICLC treatment, including strong interferon signaling accompanied by transient increases in circulating IP-10 (CXCL10) levels. These responses generally peaked by 24–48 h after the first injection and returned to baseline by day 8. CD4+ T cell number and phenotype were unchanged, plasma viral control was maintained and no significant effect on HIV reservoirs was observed. Conclusions: These finding suggest that Poly-ICLC could be safely used for inducing transient innate immune responses in treated HIV+ subjects indicating promise as an adjuvant for HIV therapeutic vaccines. Trial Registration:www.ClinicalTrials.gov, identifier: NCT02071095.
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Affiliation(s)
- Mansi Saxena
- Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Rachel L Sabado
- Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Melissa La Mar
- Aaron Diamond AIDS Research Center, Rockefeller University, New York, NY, United States
| | - Hiroshi Mohri
- Aaron Diamond AIDS Research Center, Rockefeller University, New York, NY, United States
| | | | - Hanqing Dong
- Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Joel Correa Da Rosa
- Laboratory of Investigative Dermatology, The Rockefeller University, New York, NY, United States
| | - Martin Markowitz
- Aaron Diamond AIDS Research Center, Rockefeller University, New York, NY, United States
| | - Nina Bhardwaj
- Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Elizabeth Miller
- Icahn School of Medicine at Mount Sinai, New York, NY, United States.,Laboratory of Investigative Dermatology, The Rockefeller University, New York, NY, United States
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20
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Emerging CRISPR/Cas9 applications for T-cell gene editing. Emerg Top Life Sci 2019; 3:261-275. [PMID: 33523139 DOI: 10.1042/etls20180144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 03/04/2019] [Accepted: 03/08/2019] [Indexed: 12/17/2022]
Abstract
Gene editing tools are being rapidly developed, accelerating many areas of cell and gene therapy research. Each successive gene editing technology promises increased efficacy, improved specificity, reduced manufacturing cost and design complexity; all of which are currently epitomised by the clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated protein (Cas9) platform. Since its conceptualisation, CRISPR-based gene editing has been applied to existing methodologies and has further allowed the exploration of novel avenues of research. Implementation of CRISPR/Cas9 has been instrumental to recent progress in the treatment of cancer, primary immunodeficiency, and infectious diseases. To this end, T-cell therapies have attempted to harness and redirect antigen recognition function, and through gene editing, broaden T-cell targeting capabilities and enhance their potency. The purpose of this review is to provide insights into emerging applications of CRISPR/Cas9 in T-cell therapies, to briefly address concerns surrounding CRISPR-mediated indel formation, and to introduce CRISPR/Cas9 base editing technologies that hold vast potential for future research and clinical translation.
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21
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Abstract
The interplay between immune response and HIV is intensely studied via mathematical modeling, with significant insights but few direct answers. In this short review, we highlight advances and knowledge gaps across different aspects of immunity. In particular, we identify the innate immune response and its role in priming the adaptive response as ripe for modeling. The latter have been the focus of most modeling studies, but we also synthesize key outstanding questions regarding effector mechanisms of cellular immunity and development of broadly neutralizing antibodies. Thus far, most modeling studies aimed to infer general immune mechanisms; we foresee that significant progress will be made next by detailed quantitative fitting of models to data, and prediction of immune responses.
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Affiliation(s)
- Jessica M Conway
- Department of Mathematics and Center for Infectious Disease Dynamics, Pennsylvania State University, University Park PA 16802, USA
| | - Ruy M Ribeiro
- Laboratorio de Biomatematica, Faculdade de Medicina da Universidade de Lisboa, Portugal and Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
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22
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Abstract
PURPOSE OF REVIEW The article describes recent advances in understanding the causes and consequences of microbial translocation in HIV and simian immunodeficiency virus infections. RECENT FINDINGS Persistent microbial translocation contributes to aberrant immune activation in immunodeficiency lentiviral infections and thereby, pathogenesis and mortality. Efforts to delineate the circumstances surrounding translocation have benefited from use of simian immunodeficiency virus-infected nonhuman primates and highlight the overwhelming immunologic diversion caused by translocating microbes. The use of therapeutics aimed at reducing microbial translocation show promise and will benefit from continued research into the mechanisms that promote systemic microbial dissemination in treated and untreated infections. SUMMARY Insights into the source and identity of translocating microbes in lentiviral infections continue to enhance the development of adjunct therapeutics.
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23
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Epigenetic alterations are associated with monocyte immune dysfunctions in HIV-1 infection. Sci Rep 2018; 8:5505. [PMID: 29615725 PMCID: PMC5882962 DOI: 10.1038/s41598-018-23841-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 03/20/2018] [Indexed: 01/28/2023] Open
Abstract
Monocytes are key cells in the immune dysregulation observed during human immunodeficiency virus (HIV) infection. The events that take place specifically in monocytes may contribute to the systemic immune dysfunction characterized by excessive immune activation in infected individuals, which directly correlates with pathogenesis and progression of the disease. Here, we investigated the immune dysfunction in monocytes from untreated and treated HIV + patients and associated these findings with epigenetic changes. Monocytes from HIV patients showed dysfunctional ability of phagocytosis and killing, and exhibited dysregulated cytokines and reactive oxygen species production after M. tuberculosis challenge in vitro. In addition, we showed that the expression of enzymes responsible for epigenetic changes was altered during HIV infection and was more prominent in patients that had high levels of soluble CD163 (sCD163), a newly identified plasmatic HIV progression biomarker. Among the enzymes, histone acetyltransferase 1 (HAT1) was the best epigenetic biomarker correlated with HIV - sCD163 high patients. In conclusion, we confirmed that HIV impairs effector functions of monocytes and these alterations are associated with epigenetic changes that once identified could be used as targets in therapies aiming the reduction of the systemic activation state found in HIV patients.
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24
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Gomes STM, Gomes ÉR, Dos Santos MB, Lima SS, Queiroz MAF, Machado LFA, Cayres-Vallinoto IMV, Vallinoto ACR, de O Guimarães Ishak M, Ishak R. Immunological and virological characterization of HIV-1 viremia controllers in the North Region of Brazil. BMC Infect Dis 2017; 17:381. [PMID: 28571570 PMCID: PMC5455094 DOI: 10.1186/s12879-017-2491-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 05/24/2017] [Indexed: 12/30/2022] Open
Abstract
Background A rare phenotype of clinical non-progressors to AIDS is not well understood and the new protocol for universal treatment, may block the understanding of viral control thus it is crucial to define this controversial group. Methods A cohort of 30 persons followed a criteria for viremia control groups 1 (VC1; n = 2) and 2 (VC2; n = 7) and non-viral controllers (NC; n = 21) including number of years of diagnosis, LTCD4+, LTCD8+ counts, plasma viral load and the absence of ART; 241 uninfected control persons were matched to age and sex. Infected persons were regularly examined and submitted to two or three annual laboratory measurements. Polymorphisms and allele frequencies of CCR5Δ32 and SDF1–3’A were detected in the genomic DNA. Plasma levels of cytokines (IL-2, IL-4, IL-5, IL-9, IL-10, IL-13, IL-17 and IFN-y) were measured. Results The group investigated is originated from a miscigenetic population and demographic and social characteristics were not significantly relevant. LTCD4+ median values were higher among VC than NC, but significantly lower than uninfected controls. Evolution of LTCD4+ and LTCD8+ counts, showed a slight increase of LTCD4+ among VC, but a significant decrease in the NC. The percentage of annual change in LTCD4+ was also significantly different between the groups. LTCD4+/LTCD8+ ratio was inverted but not significant among the VC, thus the ratio may be a useful biomarker for the VC. A clear signature indicated a change from Th1 to Th2 cytokine profiles from VC to NC, respectively. Conclusions The knowledge of viral controllers characteristics in different population groups is important to define a strict universal definition for the sake of learning about the pathogenesis of HIV-1. Data on LTCD4+ seems to be stable and repetitive from published data, but the LTCD8+ response and the significance of LTCD4+/LTCD8+ ratio values are in need to further exploration as biomarkers. The change from Th1 to Th2 cytokine profile may help to design and adjust specific treatment protocols for the group.
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Affiliation(s)
- Samara Tatielle M Gomes
- Federal University of Para, Institute of Biological Sciences, Virus Laboratory, Campus Belem, Belem, Para, 66000-000, Brazil
| | - Érica R Gomes
- Federal University of Para, Institute of Biological Sciences, Virus Laboratory, Campus Belem, Belem, Para, 66000-000, Brazil
| | - Mike B Dos Santos
- Federal University of Para, Institute of Biological Sciences, Virus Laboratory, Campus Belem, Belem, Para, 66000-000, Brazil
| | - Sandra S Lima
- Federal University of Para, Institute of Biological Sciences, Virus Laboratory, Campus Belem, Belem, Para, 66000-000, Brazil
| | - Maria Alice F Queiroz
- Federal University of Para, Institute of Biological Sciences, Virus Laboratory, Campus Belem, Belem, Para, 66000-000, Brazil
| | - Luiz Fernando A Machado
- Federal University of Para, Institute of Biological Sciences, Virus Laboratory, Campus Belem, Belem, Para, 66000-000, Brazil
| | - Izaura M V Cayres-Vallinoto
- Federal University of Para, Institute of Biological Sciences, Virus Laboratory, Campus Belem, Belem, Para, 66000-000, Brazil
| | - Antonio Carlos R Vallinoto
- Federal University of Para, Institute of Biological Sciences, Virus Laboratory, Campus Belem, Belem, Para, 66000-000, Brazil
| | - Marluísa de O Guimarães Ishak
- Federal University of Para, Institute of Biological Sciences, Virus Laboratory, Campus Belem, Belem, Para, 66000-000, Brazil
| | - Ricardo Ishak
- Federal University of Para, Institute of Biological Sciences, Virus Laboratory, Campus Belem, Belem, Para, 66000-000, Brazil.
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