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Qulu WP, Mzobe G, Mtshali A, Letsoalo MP, Osman F, San JE, Kama AO, Garrett N, Mindel A, Rompalo A, Liebenberg LJP, Archary D, Sivro A, Ngcapu S. Metronidazole Treatment Failure and Persistent BV Lead to Increased Frequencies of Activated T- and Dendritic-Cell Subsets. Microorganisms 2023; 11:2643. [PMID: 38004655 PMCID: PMC10673474 DOI: 10.3390/microorganisms11112643] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/21/2023] [Accepted: 10/23/2023] [Indexed: 11/26/2023] Open
Abstract
Metronidazole (MDZ) treatment failure and bacterial vaginosis (BV) recurrence rates are high among African women. This cohort study identified genital immune parameters associated with treatment response by comparing vaginal microbiota and immune cell frequencies in endocervical cytobrushes obtained from 32 South African women with symptomatic BV pre- and post-metronidazole treatment. Cervical T- and dendritic-cell subsets were phenotyped using multiparameter flow cytometry and the composition of vaginal microbial communities was characterized using 16S rRNA gene sequencing. MDZ treatment led to a modest decrease in the relative abundance of BV-associated bacteria, but colonization with Lactobacillus species (other than L. iners) was rare. At 6 and 12 weeks, MDZ-treated women had a significant increase in the frequencies of CCR5+ CD4+ T cells and plasmacytoid dendritic cells compared to the pre-treatment timepoint. In addition, MDZ non-responders had significantly higher frequencies of activated CD4 T cells and monocytes compared to MDZ responders. We conclude that MDZ treatment failure was characterized by an increased expression of activated T- and dendritic-cell subsets that may enhance HIV susceptibility. These data suggest the need to further assess the long-term impact of MDZ treatment on mucosal immune response and the vaginal microbiota.
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Affiliation(s)
- Wenkosi Perez Qulu
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban 4001, South Africa; (W.P.Q.); (G.M.); (A.M.); (M.P.L.); (F.O.); (A.O.K.); (N.G.); (A.M.); (L.J.P.L.); (D.A.); (A.S.)
- Department of Medical Microbiology, University of KwaZulu-Natal, Durban 4001, South Africa
| | - Gugulethu Mzobe
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban 4001, South Africa; (W.P.Q.); (G.M.); (A.M.); (M.P.L.); (F.O.); (A.O.K.); (N.G.); (A.M.); (L.J.P.L.); (D.A.); (A.S.)
- Department of Medical Microbiology, University of KwaZulu-Natal, Durban 4001, South Africa
| | - Andile Mtshali
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban 4001, South Africa; (W.P.Q.); (G.M.); (A.M.); (M.P.L.); (F.O.); (A.O.K.); (N.G.); (A.M.); (L.J.P.L.); (D.A.); (A.S.)
- Department of Medical Microbiology, University of KwaZulu-Natal, Durban 4001, South Africa
| | - Marothi Peter Letsoalo
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban 4001, South Africa; (W.P.Q.); (G.M.); (A.M.); (M.P.L.); (F.O.); (A.O.K.); (N.G.); (A.M.); (L.J.P.L.); (D.A.); (A.S.)
| | - Farzana Osman
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban 4001, South Africa; (W.P.Q.); (G.M.); (A.M.); (M.P.L.); (F.O.); (A.O.K.); (N.G.); (A.M.); (L.J.P.L.); (D.A.); (A.S.)
| | - James Emmanuel San
- KwaZulu-Natal Research Innovation and Sequencing Platform, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban 4001, South Africa;
| | - Asavela Olona Kama
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban 4001, South Africa; (W.P.Q.); (G.M.); (A.M.); (M.P.L.); (F.O.); (A.O.K.); (N.G.); (A.M.); (L.J.P.L.); (D.A.); (A.S.)
| | - Nigel Garrett
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban 4001, South Africa; (W.P.Q.); (G.M.); (A.M.); (M.P.L.); (F.O.); (A.O.K.); (N.G.); (A.M.); (L.J.P.L.); (D.A.); (A.S.)
- Discipline of Public Health Medicine, University of KwaZulu-Natal, Durban 4001, South Africa
| | - Adrian Mindel
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban 4001, South Africa; (W.P.Q.); (G.M.); (A.M.); (M.P.L.); (F.O.); (A.O.K.); (N.G.); (A.M.); (L.J.P.L.); (D.A.); (A.S.)
| | - Anne Rompalo
- Department of Gynecology and Obstetrics, Johns Hopkins University, Baltimore, MD 21287, USA;
| | - Lenine J. P. Liebenberg
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban 4001, South Africa; (W.P.Q.); (G.M.); (A.M.); (M.P.L.); (F.O.); (A.O.K.); (N.G.); (A.M.); (L.J.P.L.); (D.A.); (A.S.)
- Department of Medical Microbiology, University of KwaZulu-Natal, Durban 4001, South Africa
- Centre for Epidemic Response and Innovation (CERI), Stellenbosch 7600, South Africa
| | - Derseree Archary
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban 4001, South Africa; (W.P.Q.); (G.M.); (A.M.); (M.P.L.); (F.O.); (A.O.K.); (N.G.); (A.M.); (L.J.P.L.); (D.A.); (A.S.)
- Department of Medical Microbiology, University of KwaZulu-Natal, Durban 4001, South Africa
| | - Aida Sivro
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban 4001, South Africa; (W.P.Q.); (G.M.); (A.M.); (M.P.L.); (F.O.); (A.O.K.); (N.G.); (A.M.); (L.J.P.L.); (D.A.); (A.S.)
- Department of Medical Microbiology, University of KwaZulu-Natal, Durban 4001, South Africa
- JC Wilt Infectious Disease Research Centre, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB R3E 3L5, Canada
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB R3E 3L5, Canada
| | - Sinaye Ngcapu
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban 4001, South Africa; (W.P.Q.); (G.M.); (A.M.); (M.P.L.); (F.O.); (A.O.K.); (N.G.); (A.M.); (L.J.P.L.); (D.A.); (A.S.)
- Department of Medical Microbiology, University of KwaZulu-Natal, Durban 4001, South Africa
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Chetty-Sebastian D, Assounga AG. Regulatory T cell frequency in peripheral blood of women with advanced cervical Cancer including women living with HIV. BMC Cancer 2023; 23:830. [PMID: 37670247 PMCID: PMC10481519 DOI: 10.1186/s12885-023-11345-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 08/28/2023] [Indexed: 09/07/2023] Open
Abstract
BACKGROUND Persistent high-risk Human papillomavirus (HR-HPV) infections are the main cause of cervical cancer. Cumulative evidence implicates regulatory T cells (Tregs) as a critical factor in the failure to eliminate HPV-induced cancers leading to their persistence and progression to cancer. Also, the WHO recognised cervical cancer as 100% attributable to persistent HR-HPV infection. The province of KwaZulu-Natal (KZN) in South Africa has a high prevalence of cervical cancer and HIV infection. MATERIALS AND METHODS We evaluated Treg frequency in dual infection of HR HPV and HIV coinfection using phenotypic markers, CD4, CD25 and intracellular Foxp3, in the peripheral blood of 51 cervical cancer and 46 non-cervical cancer participants and evaluated the effect of HIV on regulatory T cell proportion. Peripheral blood mononuclear cells were surface stained with a cocktail fluorescent labelled CD4 and CD25 and subsequently with APC anti-human FoxP3 (eBioscience). Flow cytometry was performed with FACS analysis. Statistical analysis of results was done using Instat 3 program (GraphpadR). Tregs results were expressed as median ± interquartile range (IQR). Associations of cervical cancer with demographic, clinical and laboratory variables were evaluated by univariate and multivariate logistic regression analysis using SPSS version 27 (IBM). RESULTS Tregs frequency was significantly higher in individuals with cervical cancer (11.00 ± 19.79%) compared to controls (1.71 ± 8.91%) (p < 0.0001). HIV infection was associated with an increase in Tregs frequency. In controls a significant difference in Tregs frequency was noted between women living with HIV (6.00 ± 10.57%, n = 9) and those without HIV (1.30 ± 6.10%, n = 37), p = 0.0023. In multivariate logistic regression, Tregs frequency was significantly associated with cervical cancer after controlling for age, smoking, weight loss, presence of STI, HIV and HPV genotype. DISCUSSION/CONCLUSION Higher Tregs frequency was significantly associated with cervical cancer highlighting the immunosuppressive role of Tregs in cervical cancer. Treg frequency was more strongly associated with cervical cancer than HIV infection. We provide baseline data for monitoring Treg frequencies in response to new preventive and therapeutic strategies in the management of cervical cancer.
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Affiliation(s)
- Devamani Chetty-Sebastian
- Clinical Medicine laboratory, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, 719 Umbilo Road, Durban, 4001 South Africa
| | - Alain G. Assounga
- Clinical Medicine laboratory, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, 719 Umbilo Road, Durban, 4001 South Africa
- Dept of Nephrology, Div. of Internal Medicine, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, 719 Umbilo Road, Durban, 4001 South Africa
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Ola IO, Okunowo AA, Habeebu MY, Miao Jonasson J. Clinical and non-clinical determinants of cervical cancer mortality: A retrospective cohort study in Lagos, Nigeria. Front Oncol 2023; 13:1105649. [PMID: 36874121 PMCID: PMC9978796 DOI: 10.3389/fonc.2023.1105649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 02/01/2023] [Indexed: 02/18/2023] Open
Abstract
Introduction Cervical cancer (CCa) is the fourth most frequent and a common cause of cancer mortality in women, the majority of whom live in low- and middle-income countries. Data on CCa mortality and its determinants have been poorly studied in Nigeria, resulting in a paucity of information that can assist patient management and cancer control policy. Aim The purpose of this study was to assess the mortality rate among CCa patients in Nigeria as well as the major factors influencing CCa mortality. Study design Data from the medical records of 343 CCa patients seen at the Lagos University Teaching Hospital and NSIA-LUTH Cancer Center from 2015 to 2021 were used in a retrospective cohort analysis. The hazard ratios (HR) and confidence intervals (CI) associated with the exposure variables and CCa mortality were calculated using Cox proportional hazard regression. Results The CCa mortality rate was 30.5 per 100 women-years after 2.2 years of median follow-up. Clinical factors such as HIV/AIDS (adjusted HR [aHR]: 11.9; 95% CI: 4.6, 30.4), advanced clinical stage (aHR: 2.7; 95% CI: 1.5, 4.7), and anemia at presentation (aHR: 1.8; 95% CI: 1.1, 3.0) were associated with a higher mortality risk, as were non-clinical factors such as age at diagnosis >50 years (aHR: 1.4; 95% CI: 1.0, 1.9) and family history of CCa (aHR: 3.5; 95%CI: 1.1, 11.1). Conclusion CCa has a high mortality rate in Nigeria. Incorporating these clinical and non-clinical factors into CCa management and control policies may improve women's outcomes.
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Affiliation(s)
- Idris Olasunmbo Ola
- Global Health Program, Institute of Medicine, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
- Departments of Clinical and Community Service, The Blue-Pink Center for Women's Health, Lagos, Nigeria
| | - Adeyemi Adebola Okunowo
- Department of Obstetrics & Gynaecology, College of Medicine University of Lagos, Lagos, Nigeria
- Department of Obstetrics & Gynaecology, Lagos University Teaching Hospital, Lagos, Nigeria
| | - Muhammad Yaqub Habeebu
- Department of Radiotherapy, College of Medicine, University of Lagos, Lagos, Nigeria
- Department of Radiotherapy, Lagos University Teaching Hospital, Lagos, Nigeria
- Lead Oncologist, NSIA-LUTH Cancer Centre (NLCC), Lagos, Nigeria
| | - Junmei Miao Jonasson
- School of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
- Department of Research and Development, Region Halland, Halmstad, Sweden
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Kretschmer M, Ceña‐Diez R, Butnarasu C, Silveira V, Dobryden I, Visentin S, Berglund P, Sönnerborg A, Lieleg O, Crouzier T, Yan H. Synthetic Mucin Gels with Self-Healing Properties Augment Lubricity and Inhibit HIV-1 and HSV-2 Transmission. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2203898. [PMID: 36104216 PMCID: PMC9661867 DOI: 10.1002/advs.202203898] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/14/2022] [Indexed: 05/02/2023]
Abstract
Mucus is a self-healing gel that lubricates the moist epithelium and provides protection against viruses by binding to viruses smaller than the gel's mesh size and removing them from the mucosal surface by active mucus turnover. As the primary nonaqueous components of mucus (≈0.2%-5%, wt/v), mucins are critical to this function because the dense arrangement of mucin glycans allows multivalence of binding. Following nature's example, bovine submaxillary mucins (BSMs) are assembled into "mucus-like" gels (5%, wt/v) by dynamic covalent crosslinking reactions. The gels exhibit transient liquefaction under high shear strain and immediate self-healing behavior. This study shows that these material properties are essential to provide lubricity. The gels efficiently reduce human immunodeficiency virus type 1 (HIV-1) and genital herpes virus type 2 (HSV-2) infectivity for various types of cells. In contrast, simple mucin solutions, which lack the structural makeup, inhibit HIV-1 significantly less and do not inhibit HSV-2. Mechanistically, the prophylaxis of HIV-1 infection by BSM gels is found to be that the gels trap HIV-1 by binding to the envelope glycoprotein gp120 and suppress cytokine production during viral exposure. Therefore, the authors believe the gels are promising for further development as personal lubricants that can limit viral transmission.
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Affiliation(s)
- Martin Kretschmer
- School of Engineering and Design, Department of Materials EngineeringTechnical University of MunichBoltzmannstrasse 1585748GarchingGermany
- Center for Protein AssembliesTechnical University of MunichErnst‐Otto‐Fischer Str. 885748GarchingGermany
| | - Rafael Ceña‐Diez
- Department of Medicine HuddingeDivision of Infectious DiseasesKarolinska University HospitalKarolinska Institutet, I73Stockholm141 86Sweden
| | - Cosmin Butnarasu
- Department of Molecular Biotechnology and Health ScienceUniversity of TurinTurin10135Italy
| | - Valentin Silveira
- Division of GlycoscienceDepartment of ChemistrySchool of Engineering Sciences in ChemistryBiotechnology and HealthKTH Royal Institute of TechnologyAlbaNova University CenterStockholm106 91Sweden
| | - Illia Dobryden
- Division of Bioeconomy and HealthDepartment of Material and Surface DesignRISE Research Institutes of SwedenMalvinas väg 3StockholmSE‐114 86Sweden
| | - Sonja Visentin
- Department of Molecular Biotechnology and Health ScienceUniversity of TurinTurin10135Italy
| | - Per Berglund
- Department of Industrial BiotechnologySchool of Engineering Sciences in ChemistryBiotechnology and HealthKTH Royal Institute of TechnologyAlbaNova University CenterStockholm106 91Sweden
| | - Anders Sönnerborg
- Department of Medicine HuddingeDivision of Infectious DiseasesKarolinska University HospitalKarolinska Institutet, I73Stockholm141 86Sweden
| | - Oliver Lieleg
- School of Engineering and Design, Department of Materials EngineeringTechnical University of MunichBoltzmannstrasse 1585748GarchingGermany
- Center for Protein AssembliesTechnical University of MunichErnst‐Otto‐Fischer Str. 885748GarchingGermany
| | - Thomas Crouzier
- Division of GlycoscienceDepartment of ChemistrySchool of Engineering Sciences in ChemistryBiotechnology and HealthKTH Royal Institute of TechnologyAlbaNova University CenterStockholm106 91Sweden
- AIMES – Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of TechnologyStockholmSweden
- Department of NeuroscienceKarolinska InstitutetStockholmSE‐171 77Sweden
| | - Hongji Yan
- Division of GlycoscienceDepartment of ChemistrySchool of Engineering Sciences in ChemistryBiotechnology and HealthKTH Royal Institute of TechnologyAlbaNova University CenterStockholm106 91Sweden
- AIMES – Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of TechnologyStockholmSweden
- Department of NeuroscienceKarolinska InstitutetStockholmSE‐171 77Sweden
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Radzey N, Harryparsad R, Meyer B, Chen PL, Gao X, Morrison C, Taku O, Williamson A, Mehou‐Loko C, Lefebvre d'Hellencourt F, Buck G, Smit J, Strauss J, Nanda K, Ahmed K, Beksinska M, Serrano M, Bailey V, Masson L, Deese J. Genital inflammatory status and the innate immune response to contraceptive initiation. Am J Reprod Immunol 2022; 88:e13542. [PMID: 35394678 PMCID: PMC10909525 DOI: 10.1111/aji.13542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 03/14/2022] [Accepted: 03/21/2022] [Indexed: 11/29/2022] Open
Abstract
PROBLEM Data on the effects of contraceptives on female genital tract (FGT) immune mediators are inconsistent, possibly in part due to pre-existing conditions that influence immune mediator changes in response to contraceptive initiation. METHODS This study included 161 South African women randomised to injectable depot medroxyprogesterone acetate (DMPA-IM), copper intrauterine device (IUD), or levonorgestrel (LNG) implant in the Evidence for Contraceptive Options and HIV Outcomes (ECHO) trial. We measured thirteen cytokines and antimicrobial peptides previously associated with HIV acquisition in vaginal swabs using Luminex and ELISA, before, and at 1 and 3 months after contraceptive initiation. Women were grouped according to an overall baseline inflammatory profile. We evaluated modification of the relationships between contraceptives and immune mediators by baseline inflammation, demographic, and clinical factors. RESULTS Overall, LNG implant and copper IUD initiation were associated with increases in inflammatory cytokines, while no changes were observed following DMPA-IM initiation. However, when stratifying by baseline inflammatory profile, women with low baseline inflammation in all groups experienced significant increases in inflammatory cytokines, while those with a high baseline inflammatory profile experienced no change or decreases in inflammatory cytokines. CONCLUSION We conclude that pre-contraceptive initiation immune profile modifies the effect of contraceptives on the FGT innate immune response.
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Affiliation(s)
- Nina Radzey
- Institute of Infectious Disease and Molecular Medicine (IDM)University of Cape TownCape TownSouth Africa
| | - Rushil Harryparsad
- Institute of Infectious Disease and Molecular Medicine (IDM)University of Cape TownCape TownSouth Africa
| | - Bahiah Meyer
- Institute of Infectious Disease and Molecular Medicine (IDM)University of Cape TownCape TownSouth Africa
| | | | | | | | - Ongeziwe Taku
- Institute of Infectious Disease and Molecular Medicine (IDM)University of Cape TownCape TownSouth Africa
| | - Anna‐Lise Williamson
- Institute of Infectious Disease and Molecular Medicine (IDM)University of Cape TownCape TownSouth Africa
| | - Celia Mehou‐Loko
- Institute of Infectious Disease and Molecular Medicine (IDM)University of Cape TownCape TownSouth Africa
| | | | - Gregory Buck
- Virginia Commonwealth UniversityRichmondVirginiaUSA
| | - Jennifer Smit
- MatCH Research Unit (MRU), Department of Obstetrics and GynaecologyUniversity of the WitwatersrandDurbanSouth Africa
| | | | | | - Khatija Ahmed
- Setshaba Research CentreTshwaneSouth Africa
- Department of Medical MicrobiologyUniversity of PretoriaPretoriaSouth Africa
| | - Mags Beksinska
- MatCH Research Unit (MRU), Department of Obstetrics and GynaecologyUniversity of the WitwatersrandDurbanSouth Africa
| | | | | | - Lindi Masson
- Institute of Infectious Disease and Molecular Medicine (IDM)University of Cape TownCape TownSouth Africa
- Disease Elimination Program, Life Sciences DisciplineBurnet InstituteMelbourneAustralia
- Centre for the AIDS Programme of Research in South AfricaDurbanSouth Africa
- Central Clinical SchoolMonash UniversityMelbourneAustralia
| | - Jennifer Deese
- RTI InternationalResearch Triangle ParkNorth CarolinaUSA
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Armstrong E, Kaul R. Beyond bacterial vaginosis: vaginal lactobacilli and HIV risk. MICROBIOME 2021; 9:239. [PMID: 34893070 PMCID: PMC8665571 DOI: 10.1186/s40168-021-01183-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 11/01/2021] [Indexed: 05/17/2023]
Abstract
HIV incidence continues to be unacceptably high in Eastern and Southern Africa, with women disproportionately affected. An increased per-contact risk of HIV acquisition among African, Caribbean, and other Black (ACB) women has been associated with the higher prevalence of bacterial vaginosis (BV) in these communities, wherein the vaginal microbiota is predominated by diverse pro-inflammatory anaerobic bacteria. However, while the vaginal microbiota in BV-free women is typically predominated by one of several different Lactobacillus spp., the degree of HIV protection afforded by a Lactobacillus-predominant vaginal microbiota also varies considerably. Specifically, L. crispatus is associated with an immunoregulatory genital immune environment, exclusion of BV-associated bacteria, and reduced HIV risk. In contrast, less HIV protection or exclusion of BV-associated bacteria and fewer immune benefits have been associated with L. iners-which is unfortunately the most common Lactobacillus species among ACB women. These species-specific clinical differences are underpinned by substantial genomic differences between Lactobacillus species: for instance, the much smaller genome of L. iners lacks the coding sequence for D-lactic acid dehydrogenase and cannot produce the D-lactate isomer that enhances HIV trapping in mucus but encodes for epithelial cell toxins and stress resistance proteins that may enhance bacterial survival in the context of microbiota and environmental fluctuations. While more studies are needed to elucidate whether differences in HIV protection between Lactobacillus species are due to direct genital immune effects or the exclusion of proinflammatory BV-associated bacteria, the current body of work suggests that for BV treatment to succeed as an HIV prevention strategy, it may be necessary to induce a vaginal microbiota that is predominated by specific (non-iners) Lactobacillus species. Video abstract.
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Affiliation(s)
- Eric Armstrong
- Department of Medicine, University of Toronto, Toronto, Canada.
| | - Rupert Kaul
- Department of Medicine, University of Toronto, Toronto, Canada
- University Health Network, Toronto General Hospital, Immunodeficiency Clinic, Toronto, Canada
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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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Gustin A, Cromarty R, Schifanella L, Klatt NR. Microbial mismanagement: how inadequate treatments for vaginal dysbiosis drive the HIV epidemic in women. Semin Immunol 2021; 51:101482. [PMID: 34120819 DOI: 10.1016/j.smim.2021.101482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 05/24/2021] [Indexed: 12/18/2022]
Abstract
Women and girls represent a key population driving new HIV infections and persistence of the HIV pandemic. A key determinant of HIV susceptibility is the composition of the vaginal microbiome, which can influence the local immune cell population, inflammation status, and HIV prevention drug levels. While a low-diversity composition dominated by Lactobacillus crispatus is associated with a decreased risk of HIV acquisition, high diversity environments associated with bacterial vaginosis increase risk of HIV. Given the important role of the vaginal microbiome in determining HIV susceptibility, altering the microbiome towards a Lactobacillus-dominated state is an attractive complementary strategy to reduce HIV incidence rates. Here, we provide an overview of the mechanisms by which the vaginal microbiome may contribute to HIV acquisition risk. Furthermore, we address the advantages and limitations of historical treatments and emerging technologies under investigation to modify the vaginal microbiome, including: antibiotics, bacteriophages, probiotics, topicals, and engineered bacteria. By addressing the current state of vaginal microbiome knowledge and strategies for manipulation, we hope to amplify the growing calls for increased resources and research into vaginal microbial health, which will be essential to accelerating preventative efforts amongst the world's most vulnerable populations.
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Affiliation(s)
- Andrew Gustin
- Department of Global Health, University of Washington, Seattle, WA, USA
| | - Ross Cromarty
- Department of Surgery, Division of Surgical Outcomes and Precision Medicine Research, University of Minnesota, Minneapolis, MN, USA; Department of Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Luca Schifanella
- Department of Surgery, Division of Surgical Outcomes and Precision Medicine Research, University of Minnesota, Minneapolis, MN, USA
| | - Nichole R Klatt
- Department of Surgery, Division of Surgical Outcomes and Precision Medicine Research, University of Minnesota, Minneapolis, MN, USA.
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Association Between CD4 Count and Chemoradiation Therapy Outcomes Among Cervical Cancer Patients With HIV. J Acquir Immune Defic Syndr 2021; 85:201-208. [PMID: 32568769 DOI: 10.1097/qai.0000000000002420] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND In Botswana, nearly two-thirds of cervical cancer patients are HIV-positive. This study examined the relationship between CD4 count and chemoradiation therapy outcomes among cervical cancer patients with HIV. SETTING A prospective cohort study of 231 HIV-positive women with locally invasive cervical cancer was conducted in Gaborone, Botswana from January 2015 to February 2018. METHODS Primary outcome was survival, defined as time from scheduled end of chemoradiation therapy to death or last contact with patient. Nadir CD4 count was defined as lowest CD4 available before cancer diagnosis. Delta CD4 count was defined as improvement from nadir CD4 to CD4 at cancer diagnosis. Hazard ratio (HR) analyses were adjusted for presenting variables (age, baseline hemoglobin, cancer stage, and performance status) and treatment variables (chemotherapy cycles and radiation dose). RESULTS Two hundred thirty-one patients were included in nadir CD4 analysis; 139 were included in delta CD4 analysis. Higher delta CD4 was significantly associated with reduced mortality after adjusting for presenting and treatment variables (CD4 100-249: HR 0.45, 95% CI: 0.21 to 0.95; CD4 ≥250: HR 0.45, 95% CI: 0.20 to 1.02). Higher nadir CD4 showed a trend toward reduced mortality after adjusting for presenting and treatment variables (HR 0.94, 95% CI: 0.84 to 1.06). CONCLUSIONS Higher delta CD4 (greater improvement from nadir CD4 to CD4 at cervical cancer diagnosis) is significantly associated with lower mortality. Although not statistically significant, data suggest that higher nadir CD4 may reduce mortality. These results reinforce the importance of early HIV diagnosis and antiretroviral therapy initiation, as their effects influence cervical cancer outcomes years later.
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HIV susceptibility in women: The roles of genital inflammation, sexually transmitted infections and the genital microbiome. J Reprod Immunol 2021; 145:103291. [PMID: 33647576 DOI: 10.1016/j.jri.2021.103291] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 01/29/2021] [Accepted: 02/12/2021] [Indexed: 12/24/2022]
Abstract
Given that heterosexual transmission of HIV across the genital mucosa is the most common route of infection in women, an in-depth understanding of the biological mechanisms associated with HIV risk in the female genital tract (FGT) is essential for effective control of the epidemic. Genital pro-inflammatory cytokines are well-described biological co-factors to HIV risk. Increased levels of pro-inflammatory cytokines in the FGT have been associated with a 3-fold higher-risk of acquiring HIV, presumably through involvement in barrier compromise and the recruitment of highly activated HIV target cells to the site of initial viral infection and replication. Sexually transmitted infections (STIs) and bacterial vaginosis (BV) are suggested possible contributors to genital inflammation in the FGT, and this, coupled with the relationship between genital inflammation and HIV risk, underscores the importance of effective treatment of STI and BV in the promotion of women's health. In most low- and middle-income countries, STIs are treated syndromically, a practice providing rapid treatment without identifying the infection source. However, this approach has been associated with over-diagnosis and the overuse of drugs. Further, because many women with STIs are asymptomatic, syndromic management also fails to treat a vast proportion of infected women. Although several studies have explored the role of STIs and the vaginal microbiome on genital inflammation and HIV risk, the impact of STI and BV management on genital inflammation remains poorly understood. This review aimed to collate the evidence on how BV and STI management efforts affect genital inflammation and the genital microbiome in women.
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Inflammation, HIV, and Immune Quiescence: Leveraging on Immunomodulatory Products to Reduce HIV Susceptibility. AIDS Res Treat 2020; 2020:8672850. [PMID: 33178456 PMCID: PMC7609152 DOI: 10.1155/2020/8672850] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 09/23/2020] [Accepted: 10/15/2020] [Indexed: 12/29/2022] Open
Abstract
The relationship between inflammation and HIV has been a focus of research over the last decade. In HIV-infected individuals, increased HIV-associated immune activation significantly correlated to disease progression. While genital inflammation (GI) has been shown to significantly increase the risk of HIV acquisition and transmission, immune correlates for reduced risk remain limited. In certain HIV-exposed seronegative individuals, an immune quiescent phenotype characterized reduced risk. Immune quiescence is defined by specific, targeted, highly regulated immune responses that hinder overt inflammation or immune activation. Targeted management of inflammation, therefore, is a plausible strategy to mitigate HIV risk and slow disease progression. Nonsteroidal anti-inflammatory drugs (NSAIDs) such as hydroxychloroquine and aspirin have shown encouraging preliminary results in low-risk women by reducing systemic and genital immune activation. A topical NSAID, containing ibuprofen, is effective in treating vulvovaginal inflammation. Additionally, the glucocorticoids (GCs), prednisolone, and dexamethasone are used to treat HIV-associated immune activation. Collectively, these data inform on immune-modulating drugs to reduce HIV risk. However, the prolonged use of these pharmaceutical drugs is associated with adverse effects, both systemically and to a lesser extent topically. Natural products with their reduced side effects coupled with anti-inflammatory properties render them viable options. Lactic acid (LA) has immunomodulatory properties. LA regulates the genital microbiome by facilitating the growth of Lactobacillus species, while simultaneously limiting bacterial species that cause microbial dysbiosis and GI. Glycerol monolaurate, besides being anti-inflammatory, also inhibited SIV infections in rhesus macaques. The proposed pharmaceutical and natural products could be used in combination with either antiretrovirals for treatment or preexposure prophylaxis for HIV prevention. This review provides a summary on the associations between inflammation, HIV risk, and disease progression. Furthermore, we use the knowledge from immune quiescence to exploit the use of pharmaceutical and natural products as strategic interventions to manage inflammation, toward mitigating HIV infections.
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Jewanraj J, Ngcapu S, Osman F, Mtshali A, Singh R, Mansoor LE, Abdool Karim SS, Abdool Karim Q, Passmore JAS, Liebenberg LJP. The Impact of Semen Exposure on the Immune and Microbial Environments of the Female Genital Tract. FRONTIERS IN REPRODUCTIVE HEALTH 2020; 2:566559. [PMID: 36304709 PMCID: PMC9580648 DOI: 10.3389/frph.2020.566559] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 10/16/2020] [Indexed: 01/01/2023] Open
Abstract
Background: Semen induces an immune response at the female genital tract (FGT) to promote conception. It is also the primary vector for HIV transmission to women during condomless sex. Since genital inflammation and immune activation increase HIV susceptibility in women, semen-induced alterations at the FGT may have implications for HIV risk. Here we investigated the impact of semen exposure, as measured by self-reported condom use and Y-chromosome DNA (YcDNA) detection, on biomarkers of female genital inflammation associated with HIV acquisition. Methods: Stored genital specimens were collected biannually (mean 5 visits) from 153 HIV-negative women participating in the CAPRISA 008 tenofovir gel open-label extension trial. YcDNA was detected in cervicovaginal lavage (CVL) pellets by RT-PCR and served as a biomarker of semen exposure within 15 days of genital sampling. Protein concentrations were measured in CVL supernatants by multiplexed ELISA, and the frequency of activated CD4+CCR5+ HIV targets was assessed on cytobrush-derived specimens by flow cytometry. Common sexually transmitted infections (STIs) and bacterial vaginosis (BV)-associated bacteria were measured by PCR. Multivariable linear mixed models were used to assess the relationship between YcDNA detection and biomarkers of inflammation over time. Results: YcDNA was detected at least once in 69% (106/153) of women during the trial (median 2, range 1-5 visits), and was associated with marital status, cohabitation, the frequency of vaginal sex, and Nugent Score. YcDNA detection but not self-reported condom use was associated with elevated concentrations of several cytokines: IL-12p70, IL-10, IFN-γ, IL-13, IP-10, MIG, IL-7, PDGF-BB, SCF, VEGF, β-NGF, and biomarkers of epithelial barrier integrity: MMP-2 and TIMP-4; and with reduced concentrations of IL-18 and MIF. YcDNA detection was not associated with alterations in immune cell frequencies but was related to increased detection of P. bivia (OR = 1.970; CI 1.309-2.965; P = 0.001) at the FGT. Conclusion: YcDNA detection but not self-reported condom use was associated with alterations in cervicovaginal cytokines, BV-associated bacteria, and matrix metalloproteinases, and may have implications for HIV susceptibility in women. This study highlights the discrepancies related to self-reported condom use and the need for routine screening for biomarkers of semen exposure in studies of mucosal immunity to HIV and other STIs.
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Affiliation(s)
- Janine Jewanraj
- Center for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Science, University of KwaZulu-Natal, Durban, South Africa
| | - Sinaye Ngcapu
- Center for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Science, University of KwaZulu-Natal, Durban, South Africa
| | - Farzana Osman
- Center for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
| | - Andile Mtshali
- Center for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Science, University of KwaZulu-Natal, Durban, South Africa
| | - Ravesh Singh
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Science, University of KwaZulu-Natal, Durban, South Africa
- Department of Microbiology, National Health Laboratory Services, KwaZulu-Natal Academic Complex, Inkosi Albert Luthuli Central Hospital, Durban, South Africa
| | - Leila E. Mansoor
- Center for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
- School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa
| | - Salim S. Abdool Karim
- Center for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
- Department of Epidemiology, Columbia University, New York, NY, United States
| | - Quarraisha Abdool Karim
- Center for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
- Department of Epidemiology, Columbia University, New York, NY, United States
| | - Jo-Ann S. Passmore
- Center for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
- Institute of Infectious Diseases and Molecular Medicine (IDM), University of Cape Town, Cape Town, South Africa
- National Health Laboratory Services, Johannesburg, South Africa
| | - Lenine J. P. Liebenberg
- Center for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
- Department of Medical Microbiology, School of Laboratory Medicine and Medical Science, University of KwaZulu-Natal, Durban, South Africa
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13
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Mbuya W, Mcharo R, Mhizde J, Mnkai J, Mahenge A, Mwakatima M, Mwalongo W, Chiwerengo N, Hölscher M, Lennemann T, Saathoff E, Rwegoshora F, Torres L, Kroidl A, Geldmacher C, Held K, Chachage M. Depletion and activation of mucosal CD4 T cells in HIV infected women with HPV-associated lesions of the cervix uteri. PLoS One 2020; 15:e0240154. [PMID: 33007050 PMCID: PMC7531815 DOI: 10.1371/journal.pone.0240154] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 09/21/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The burden of HPV-associated premalignant and malignant cervical lesions remains high in HIV+ women even under ART treatment. In order to identify possible underlying pathophysiologic mechanisms, we studied activation and HIV co-receptor expression in cervical T-cell populations in relation to HIV, HPV and cervical lesion status. METHODS Cervical cytobrush (n = 468: 253 HIV- and 215 HIV+; 71% on ART) and blood (in a subset of 39 women) was collected from women in Mbeya, Tanzania. Clinical data on HIV and HPV infection, as well as ART status was collected. T cell populations were characterized using multiparametric flow cytometry-based on their expression of markers for cellular activation (HLA-DR), and memory (CD45RO), as well as HIV co-receptors (CCR5, α4β7). RESULTS Cervical and blood T cells differed significantly, with higher frequencies of T cells expressing CD45RO, as well as the HIV co-receptors CCR5 and α4β7 in the cervical mucosa. The skewed CD4/CD8 T cell ratio in blood of HIV+ women was mirrored in the cervical mucosa and HPV co-infection was linked to lower levels of mucosal CD4 T cells in HIV+ women (%median: 22 vs 32; p = 0.04). In addition, HIV and HPV infection, and especially HPV-associated cervical lesions were linked to significantly higher frequencies of HLA-DR+ CD4 and CD8 T cells (p-values < 0.05). Interestingly, HPV infection did not significantly alter frequencies of CCR5+ or α4β7+ CD4 T cells. CONCLUSION The increased proportion of activated cervical T cells associated with HPV and HIV infection, as well as HPV-associated lesions, together with the HIV-induced depletion of cervical CD4 T cells, may increase the risk for HPV infection, associated premalignant lesions and cancer in HIV+ women. Further, high levels of activated CD4 T cells associated with HPV and HPV-associated lesions could contribute to a higher susceptibility to HIV in HPV infected women.
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Affiliation(s)
- Wilbert Mbuya
- National Institute for Medical Research–Mbeya Medical Research Centre (NIMR-MMRC), Mbeya, Tanzania
| | - Ruby Mcharo
- National Institute for Medical Research–Mbeya Medical Research Centre (NIMR-MMRC), Mbeya, Tanzania
- University of Dar es Salaam -Mbeya College of Health and Allied Sciences (UDSM-MCHAS), Mbeya, Tanzania
| | - Jacklina Mhizde
- National Institute for Medical Research–Mbeya Medical Research Centre (NIMR-MMRC), Mbeya, Tanzania
| | - Jonathan Mnkai
- National Institute for Medical Research–Mbeya Medical Research Centre (NIMR-MMRC), Mbeya, Tanzania
| | - Anifrid Mahenge
- National Institute for Medical Research–Mbeya Medical Research Centre (NIMR-MMRC), Mbeya, Tanzania
| | - Maria Mwakatima
- National Institute for Medical Research–Mbeya Medical Research Centre (NIMR-MMRC), Mbeya, Tanzania
| | - Wolfram Mwalongo
- National Institute for Medical Research–Mbeya Medical Research Centre (NIMR-MMRC), Mbeya, Tanzania
| | - Nhamo Chiwerengo
- National Institute for Medical Research–Mbeya Medical Research Centre (NIMR-MMRC), Mbeya, Tanzania
| | - Michael Hölscher
- Division of Infectious Diseases and Tropical Medicine, University Hospital, LMU Munich, Munich, Germany
- German Center for Infection Research (DZIF), Partner site Munich, Munich, Germany
| | - Tessa Lennemann
- National Institute for Medical Research–Mbeya Medical Research Centre (NIMR-MMRC), Mbeya, Tanzania
- Division of Infectious Diseases and Tropical Medicine, University Hospital, LMU Munich, Munich, Germany
| | - Elmar Saathoff
- Division of Infectious Diseases and Tropical Medicine, University Hospital, LMU Munich, Munich, Germany
- German Center for Infection Research (DZIF), Partner site Munich, Munich, Germany
| | | | | | - Arne Kroidl
- Division of Infectious Diseases and Tropical Medicine, University Hospital, LMU Munich, Munich, Germany
- German Center for Infection Research (DZIF), Partner site Munich, Munich, Germany
| | - Christof Geldmacher
- Division of Infectious Diseases and Tropical Medicine, University Hospital, LMU Munich, Munich, Germany
- German Center for Infection Research (DZIF), Partner site Munich, Munich, Germany
| | - Kathrin Held
- Division of Infectious Diseases and Tropical Medicine, University Hospital, LMU Munich, Munich, Germany
- German Center for Infection Research (DZIF), Partner site Munich, Munich, Germany
| | - Mkunde Chachage
- National Institute for Medical Research–Mbeya Medical Research Centre (NIMR-MMRC), Mbeya, Tanzania
- University of Dar es Salaam -Mbeya College of Health and Allied Sciences (UDSM-MCHAS), Mbeya, Tanzania
- Division of Infectious Diseases and Tropical Medicine, University Hospital, LMU Munich, Munich, Germany
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Cromarty R, Sigal A, Liebenberg LJ, Mckinnon LR, Abdool Karim SS, Passmore JAS, Archary D. Betamethasone induces potent immunosuppression and reduces HIV infection in a PBMC in vitro model. J Investig Med 2020; 69:28-40. [PMID: 33004468 PMCID: PMC7803916 DOI: 10.1136/jim-2020-001424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2020] [Indexed: 01/15/2023]
Abstract
Genital inflammation is an established risk factor for increased HIV acquisition risk. Certain HIV-exposed seronegative populations, who are naturally resistant to HIV infection, have an immune quiescent phenotype defined by reduced immune activation and inflammatory cytokines at the genital tract. Therefore, the aim of this study was to create an immune quiescent environment using immunomodulatory drugs to mitigate HIV infection. Using an in vitro peripheral blood mononuclear cell (PBMC) model, we found that inflammation was induced using phytohemagglutinin and Toll-like receptor (TLR) agonists Pam3CSK4 (TLR1/2), lipopolysaccharide (LPS) (TLR4) and R848 (TLR7/8). After treatment with anti-inflammatory drugs, ibuprofen (IBF) and betamethasone (BMS), PBMCs were exposed to HIV NL4-3 AD8. Multiplexed ELISA was used to measure 28 cytokines to assess inflammation. Flow cytometry was used to measure immune activation (CD38, HLA-DR and CCR5) and HIV infection (p24 production) of CD4+ T cells. BMS potently suppressed inflammation (soluble cytokines, p<0.05) and immune activation (CD4+ T cells, p<0.05). BMS significantly reduced HIV infection of CD4+ T cells only in the LPS (0.98%) and unstimulated (1.7%) conditions (p<0.02). In contrast, IBF had minimal anti-inflammatory and immunosuppressive but no anti-HIV effects. BMS demonstrated potent anti-inflammatory effects, regardless of stimulation condition. Despite uniform immunosuppression, BMS differentially affected HIV infection according to the stimulation conditions, highlighting the complex nature of these interactions. Together, these data underscore the importance of interrogating inflammatory signaling pathways to identify novel drug targets to mitigate HIV infection.
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Affiliation(s)
- Ross Cromarty
- Mucosal Immunology Laboratory, CAPRISA, Durban, KwaZulu-Natal, South Africa
| | - Alexander Sigal
- Africa Health Research Institute (AHRI), Durban, KwaZulu-Natal, South Africa
- Max-Planck-Institute for Infection Biology, Berlin, Germany
| | - Lenine Julie Liebenberg
- Mucosal Immunology Laboratory, CAPRISA, Durban, KwaZulu-Natal, South Africa
- Department of Medical Microbiology, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa
| | - Lyle Robert Mckinnon
- Mucosal Immunology Laboratory, CAPRISA, Durban, KwaZulu-Natal, South Africa
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Salim Safurdeen Abdool Karim
- Mucosal Immunology Laboratory, CAPRISA, Durban, KwaZulu-Natal, South Africa
- Department of Epidemiology, Columbia University Mailman School of Public Health, New York, New York, USA
| | - Jo-Ann Shelly Passmore
- Mucosal Immunology Laboratory, CAPRISA, Durban, KwaZulu-Natal, South Africa
- Institute of Infectious Diseases and Molecular Medicine, University of Cape Town Faculty of Health Sciences, Cape Town, Western Cape, South Africa
| | - Derseree Archary
- Mucosal Immunology Laboratory, CAPRISA, Durban, KwaZulu-Natal, South Africa
- Department of Medical Microbiology, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa
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15
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Dabee S, Mkhize NN, Jaspan HB, Lewis D, Gumbi PP, Passmore JAS. Initiation of Antiretroviral Therapy Differentially Influences Genital and Systemic Immune Activation in HIV-Infected Women. AIDS Res Hum Retroviruses 2020; 36:821-830. [PMID: 32524856 DOI: 10.1089/aid.2019.0268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Antiretroviral therapy (ART) has significantly improved the quality of life of HIV-infected individuals: reducing plasma viremia, restoring CD4+ T cell numbers, and correcting imbalances in blood memory T cell subsets. While ART improves immune correlates at mucosal sites, including the lower female genital tract (FGT), ART initiation has been associated with reactivation of common FGT infections. We investigated the effect of ART on immune activation and inflammation in the genital tract. We measured blood and genital T cell activation, proliferation, and immunosenescence (CD38, HLADR, Ki67, CD127, and CD57), and cytokine levels in women on ART for ∼7 years (cross-sectional analysis) or initiating ART (immediately before and 1 month after). Effector memory T cells predominated in blood and FGT during chronic infection, irrespective of ART status. In women initiating ART, 1 month was insufficient for T cell reconstitution, or alterations in T cell subset distribution, despite both plasma and genital viral loads decreasing to undetectable levels in most participants. Initiating ART was accompanied by a decline in plasma IP-10 that correlated with decreased blood CD38 expression in blood (p = .0204) but not in the FGT. The reduction in plasma (but not genital) cytokine levels due to ART initiation was dependent on their concentrations before treatment. While T cell activation decreased significantly in blood (CD4: p = .032; CD8: p = .0137), activation levels remained similar in the genital tract despite 1 month of treatment. Overall, the decrease in cellular activation and inflammation seen in blood with ART initiation was not evident in the FGT.
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Affiliation(s)
- Smritee Dabee
- Division of Medical Virology, Institute of Infectious Diseases and Molecular Medicine (IDM), University of Cape Town, Cape Town, South Africa
| | | | - Heather B. Jaspan
- Division of Medical Virology, Institute of Infectious Diseases and Molecular Medicine (IDM), University of Cape Town, Cape Town, South Africa
- Seattle Childrens Hospital, Seattle, Washington, USA
| | - David Lewis
- Western Sydney Sexual Health Centre, Parramatta, Australia
- Westmead Clinical School and Centre for Infectious Diseases and Microbiology & Marie Bashir Institute for Infectious Diseases and Biosecurity, University of Sydney, Sydney, Australia
| | - Pamela P. Gumbi
- Department of Biochemistry, University of KwaZulu Natal, Pietermaritzburg, South Africa
| | - Jo-Ann S. Passmore
- Division of Medical Virology, Institute of Infectious Diseases and Molecular Medicine (IDM), University of Cape Town, Cape Town, South Africa
- NRF-DST Centre of Excellence in HIV Prevention, Centre for the AIDS Programme of Research in South Africa, University of KwaZulu Natal, Durban, South Africa
- National Health Laboratory Service, Cape Town, South Africa
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Partner HIV Serostatus Impacts Viral Load, Genital HIV Shedding, and Immune Activation in HIV-Infected Individuals. J Acquir Immune Defic Syndr 2020; 82:51-60. [PMID: 31169767 DOI: 10.1097/qai.0000000000002089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Studies of seronegative individuals in HIV discordant relationships provide important insights into the effects of HIV exposure on the seronegative partner, but few have examined the impact of partner serostatus on disease progression in seropositive individuals. We investigated the impact of HIV serostatus on clinical and biological factors influencing HIV disease progression in 337 HIV-infected heterosexual individuals in stable long-term HIV-seroconcordant or HIV-serodiscordant relationships. Seroconcordant individuals had significantly higher plasma viral loads (pVLs) than HIV-infected partners in serodiscordant partnerships [4.4 log10 copies RNA/mL (interquartile range 3.7-5.0) versus 3.9 (3.3-4.5), P < 0.0001], irrespective of gender. pVLs correlated inversely with CD4 T-cell counts, although CD4 counts did not differ significantly between seroconcordant and serodiscordant individuals. HIV+ seroconcordant individuals had higher frequencies of CCR5 CD4 and CD8 T cells (P = 0.03 and P = 0.02, respectively) than HIV+ individuals in serodiscordant relationships and higher concentrations of plasma IL-1β (P = 0.04), TNF-α (P = 0.02), and IL-10 (P = 0.02). Activated CD4 T-cell frequencies and TNF-α were the most influential in determining variation in pVLs, independently of CD4 counts. In addition, HIV+ seroconcordant women had significantly higher genital VLs (gVLs) than HIV+ women in serodiscordant relationships (P < 0.001), with pVLs correlating significantly with gVLs (Rho = 0.65, P < 0.0001). Cervical and blood T-cell activation tended to correlate positively, although partner seroconcordance did not influence genital T-cell activation. We conclude that HIV+ seroconcordant individuals have higher frequencies of activated, CCR5-expressing T cells in blood and higher pVLs and gVLs than their HIV+ counterparts in discordant relationships, which could translate to faster disease progression or larger viral reservoir.
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Wu ES, Urban RR, Krantz EM, Mugisha NM, Nakisige C, Schwartz SM, Gray HJ, Casper C. The association between HIV infection and cervical cancer presentation and survival in Uganda. Gynecol Oncol Rep 2020; 31:100516. [PMID: 31886403 PMCID: PMC6921151 DOI: 10.1016/j.gore.2019.100516] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 10/31/2019] [Accepted: 11/07/2019] [Indexed: 11/22/2022] Open
Abstract
Our objective was to determine how HIV infection impacts cervical cancer stage at presentation and overall survival (OS) among Ugandan women. This was a prospective study of 149 women diagnosed with cervical cancer from 2013 to 2015 at the Uganda Cancer Institute. Poisson regression models were fit to calculate prevalence ratios (PR) for the association between HIV infection and late stage at cancer diagnosis. The association between HIV infection and OS after cervical cancer diagnosis was evaluated using Cox proportional hazards models. The cohort included 53 HIV-positive and 96 HIV-negative participants. Median age at diagnosis was 44 years for HIV-positive and 54 years for HIV-negative participants. Seventy-seven percent of HIV-positive participants received antiretroviral therapy. Median baseline CD4 count was 373 cells/mm3 for HIV-positive participants versus 926 cells/mm3 for HIV-negative participants. Thirty-two percent of HIV-positive participants were diagnosed with late stage cervical cancer (III-IV) versus 39% of HIV-negative participants. No association was found between late stage at cancer diagnosis and HIV infection (PR adjusted for age, parity and transport cost 1.0, 95%CI 0.6-1.8). Most women presenting for care received cancer treatment, though almost half who received radiotherapy did not complete treatment. The median OS was 13.7 months for HIV-positive participants and 24.3 months for HIV-negative participants. After adjusting for age and stage, HIV infection was weakly associated with OS (HR 1.3, 95%CI 0.8-2.2). In Uganda, cervical cancer is often incompletely treated and survival remains poor. HIV infection was not associated with cervical cancer stage at diagnosis, but may be weakly associated with shorter survival.
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Affiliation(s)
- Emily S. Wu
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Washington, 1959 NE Pacific St, Box 356460, Seattle, WA 98195, USA
| | - Renata R. Urban
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Washington, 1959 NE Pacific St, Box 356460, Seattle, WA 98195, USA
| | - Elizabeth M. Krantz
- Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, PO Box 19024, Seattle, WA 98109, USA
| | - Noleb M. Mugisha
- Uganda Cancer Institute, Upper Mulago Hill Road, Kampala, Uganda
| | - Carolyn Nakisige
- Uganda Cancer Institute, Upper Mulago Hill Road, Kampala, Uganda
| | - Stephen M. Schwartz
- Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, PO Box 19024, Seattle, WA 98109, USA
- Department of Epidemiology, University of Washington, 1959 NE Pacific St, Box 357236, Seattle, WA 98195, USA
| | - Heidi J. Gray
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Washington, 1959 NE Pacific St, Box 356460, Seattle, WA 98195, USA
| | - Corey Casper
- Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, PO Box 19024, Seattle, WA 98109, USA
- Department of Medicine, University of Washington, 1959 NE Pacific St, Box 356420, Seattle, WA 98195, USA
- Department of Global Health, University of Washington, 325 9th Ave, Box 359931, Seattle, WA 98104, USA
- Infectious Disease Research Institute, 1616 Eastlake Ave E, Suite 400, Seattle, WA 98102, USA
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Cromarty R, Sigal A, Liebenberg LJP, McKinnon LR, Abdool Karim SS, Passmore JAS, Archary D. Diminished HIV Infection of Target CD4+ T Cells in a Toll-Like Receptor 4 Stimulated in vitro Model. Front Immunol 2019; 10:1705. [PMID: 31396221 PMCID: PMC6664077 DOI: 10.3389/fimmu.2019.01705] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 07/08/2019] [Indexed: 12/20/2022] Open
Abstract
Genital inflammation is associated with increased HIV acquisition risk. Induction of an inflammatory response can occur through the recognition of pathogenic or commensal microbes by Toll-like receptors (TLRs) on various immune cells. We used a in vitro peripheral blood mononuclear cell (PBMC) system to understand the contribution of TLR stimulation in inducing inflammation and the activation of target T cells, and its effect on HIV susceptibility. PBMCs were stimulated with TLR agonists LPS (TLR4), R848 (TLR7/8), and Pam3CSK4 (TLR1/2), and then infected with HIV NL4-3 AD8. Multiplexed ELISA was used to measure 28 cytokines in cell culture supernatants. Flow cytometry was used to measure the activation state (CD38 and HLA-DR), and CCR5 expression on CD4+ and CD8+ T cells. Although TLR agonists induced higher cytokine and chemokine secretion, they did not significantly activate CD4+ and CD8+ T cells and showed decreased CCR5 expression relative to the unstimulated control. Despite several classes of inflammatory cytokines and chemokines being upregulated by TLR agonists, CD4+ T cells were significantly less infectable by HIV after TLR4-stimulation than the unstimulated control. These data demonstrate that the inflammatory effects that occur in the presence TLR agonist stimulations do not necessarily translate to the activation of T cells. Most importantly, the finding that TLR4-stimulation reduces rather than increases susceptibility of CD4+ T cells to HIV infection in this in vitro system strongly suggests that the increased chemokine and possible antiviral factor expression induced by these TLR agonists play a powerful although complex role in determining HIV infection risk.
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Affiliation(s)
- Ross Cromarty
- Centre for the AIDS Programme of Research in South Africa, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Alex Sigal
- Africa Health Research Institute, University of KwaZulu-Natal, Durban, South Africa
- Max Planck Institute for Infection Biology, Berlin, Germany
| | - Lenine J. P. Liebenberg
- Centre for the AIDS Programme of Research in South Africa, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
- Department of Medical Microbiology, University of KwaZulu-Natal, Durban, South Africa
| | - Lyle R. McKinnon
- Centre for the AIDS Programme of Research in South Africa, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
| | - Salim S. Abdool Karim
- Centre for the AIDS Programme of Research in South Africa, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, United States
| | - Jo-Ann S. Passmore
- Centre for the AIDS Programme of Research in South Africa, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
- Medical School, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, South Africa
- National Health Laboratory Service, Cape Town, South Africa
| | - Derseree Archary
- Centre for the AIDS Programme of Research in South Africa, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
- Department of Medical Microbiology, University of KwaZulu-Natal, Durban, South Africa
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19
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Abstract
As our understanding of mucosal immunity increases, it is becoming clear that the host response to HIV-1 is more complex and nuanced than originally believed. The mucosal landscape is populated with a variety of specialized cell types whose functions include combating infectious agents while preserving commensal microbiota, maintaining barrier integrity, and ensuring immune homeostasis. Advances in multiparameter flow cytometry, gene expression analysis and bioinformatics have allowed more detailed characterization of these cell types and their roles in host defense than was previously possible. This review provides an overview of existing literature on immunity to HIV-1 and SIVmac in mucosal tissues of the female reproductive tract and the gastrointestinal tract, focusing on major effector cell populations and briefly summarizing new information on tissue resident memory T cells, Treg, Th17, Th22 and innate lymphocytes (ILC), subsets that have been studied primarily in the gastrointestinal mucosa.
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Affiliation(s)
- Barbara L Shacklett
- Department of Medical Microbiology and Immunology.,Division of Infectious Diseases, Department of Medicine, School of Medicine, University of California, Davis, CA 95616
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20
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Caruso MP, Falivene J, Holgado MP, Zurita DH, Laufer N, Castro C, Nico Á, Maeto C, Salido J, Pérez H, Salomón H, Cahn P, Sued O, Fink V, Turk G, Gherardi MM. Impact of HIV-ART on the restoration of Th17 and Treg cells in blood and female genital mucosa. Sci Rep 2019; 9:1978. [PMID: 30760809 PMCID: PMC6374372 DOI: 10.1038/s41598-019-38547-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 01/02/2019] [Indexed: 12/28/2022] Open
Abstract
The aim of this study was to evaluate the effectiveness of antiretroviral treatment (ART) on the proportion and functions of Th17 and Treg cells in peripheral blood and female genital tract (FGT) respectively. To this aim, samples from 41 HIV-neg, 33 HIV+ ART-naïve and 32 HIV+ ART+ subjects were obtained. In peripheral blood, altered Th17 and Th17/Treg proportions were normalized in HIV+ ART+, but certain abnormal Treg and activated T-cell proportions were still observed. In FGT, abnormal patterns of secretion for Th17-related cytokines were observed in cervical mononuclear cells (CMCs) from HIV+ women, even in those from HIV+ ART+, compared to the HIV-neg group. Moreover, these altered patterns of secretion were associated with diminished levels of CXCL5 and CXCL1 chemokines and with an immunoregulatory skew in the CCL17/CCL20 ratio in ectocervix samples of these women. Finally, ART did not restore proportions of Th17-precursor cells with gut-homing potential in PBMCs, and positive correlations between these cells and the levels of IL-17F and IL-21 production by CMCs may suggest that a better homing of these cells to the intestine could also imply a better restoration of these cells in the female genital tract. These results indicate that antiretroviral treatment did not restore Th17-related immune functions completely at the female mucosal level.
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Affiliation(s)
- María Paula Caruso
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - Juliana Falivene
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - María Pía Holgado
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | | | - Natalia Laufer
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
- Hospital J.A. Fernández, Buenos Aires, Argentina
| | | | - Ángeles Nico
- Hospital J.A. Fernández, Buenos Aires, Argentina
| | - Cynthia Maeto
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - Jimena Salido
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - Héctor Pérez
- Hospital J.A. Fernández, Buenos Aires, Argentina
| | - Horacio Salomón
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - Pedro Cahn
- Hospital J.A. Fernández, Buenos Aires, Argentina
- Fundación Huésped, Buenos Aires, Argentina
| | - Omar Sued
- Fundación Huésped, Buenos Aires, Argentina
| | - Valeria Fink
- Hospital J.A. Fernández, Buenos Aires, Argentina
- Fundación Huésped, Buenos Aires, Argentina
| | - Gabriela Turk
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - María Magdalena Gherardi
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina.
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21
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Barr FD, Ochsenbauer C, Wira CR, Rodriguez-Garcia M. Neutrophil extracellular traps prevent HIV infection in the female genital tract. Mucosal Immunol 2018; 11:1420-1428. [PMID: 29875403 PMCID: PMC6162173 DOI: 10.1038/s41385-018-0045-0] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 04/18/2018] [Accepted: 04/29/2018] [Indexed: 02/04/2023]
Abstract
Women acquire human immunodeficiency virus (HIV) mainly through sexual intercourse. However, low transmission rates per sexual act indicate that local immune mechanisms contribute to HIV prevention. Neutrophils represent 10-20% of the genital immune cells in healthy women. Neutrophils mediate mucosal protection against bacterial and fungal pathogens through different mechanisms, including the release of neutrophil extracellular traps (NETs). NETs are DNA fragments associated with antimicrobial granular proteins. Despite neutrophil abundance and central contributions to innate immunity in the genital tract, their role in protection against HIV acquisition is unknown. We found that stimulation of human genital neutrophils with HIV viral-like particles (HIV-VLPs) induced NET release within minutes of viral exposure, through reactive oxygen species-independent mechanisms that resulted in immediate entrapment of HIV-VLPs. Incubation of infectious HIV with pre-formed genital NETs prevented infection of susceptible cells through irreversible viral inactivation. HIV inactivation by NETs from genital neutrophils could represent a previously unrecognized form of mucosal protection against HIV acquisition.
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Affiliation(s)
- Fiona D. Barr
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Christina Ochsenbauer
- Department of Medicine and UAB Center for AIDS Research, University of Alabama at Birmingham, AL
| | - Charles R. Wira
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Marta Rodriguez-Garcia
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA,Corresponding author: Address correspondence to Dr. Marta Rodriguez-Garcia, Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, One Medical Center Drive, Lebanon, NH 03756. Fax number: 603-6507717. Telephone number: 603-6502583.
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22
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Greene SA, McGrath CJ, Lehman DA, Marson KG, Trinh TT, Yatich N, Nyongesa-Malava E, Kiptinness C, Richardson BA, John-Stewart GC, De Vuyst H, Sakr SR, Mugo NR, Chung MH. Increased Cervical Human Immunodeficiency Virus (HIV) RNA Shedding Among HIV-Infected Women Randomized to Loop Electrosurgical Excision Procedure Compared to Cryotherapy for Cervical Intraepithelial Neoplasia 2/3. Clin Infect Dis 2018; 66:1778-1784. [PMID: 29272368 PMCID: PMC6248794 DOI: 10.1093/cid/cix1096] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 12/17/2017] [Indexed: 01/20/2023] Open
Abstract
Background Treatment of human immunodeficiency virus (HIV)-infected women to prevent cervical cancer may stimulate HIV RNA cervical shedding and risk HIV transmission. Methods From 2011 to 2014, 400 HIV-infected women diagnosed with cervical intraepithelial neoplasia 2/3 in Kenya were randomized to loop electrosurgical excision procedure (LEEP) or cryotherapy. Cervical samples were collected at baseline and 3 weekly intervals. Samples were tested for HIV RNA using the Gen-Probe Aptima HIV assay with a minimum detection level of 60 copies/swab and analyzed using generalized estimating equations. Results Women who received LEEP had significantly higher cervical HIV RNA levels than those who received cryotherapy at weeks 2 (adjusted incident rate ratio [aIRR], 1.07; P = .038) and 3 (aIRR, 1.08; P = .046). Within LEEP, significantly higher cervical shedding was found at weeks 2 (2.03 log10 copies/swab; P < .001) and 3 (2.04 log10 copies/swab; P < .001) compared to baseline (1.80 log10 copies/swab). Cervical HIV RNA was significantly higher following LEEP for up to 3 weeks among women on antiretroviral treatment (ART) (0.18 log10 copies/swab increase; P = .003) and in ART-naive women (1.13 log10 copies/swab increase; P < .001) compared to baseline. Within cryotherapy, cervical shedding increased in ART-naive women (0.72 log10 copies/swab increase; P = 0.004) but did not increase in women on ART. Conclusions Women randomized to LEEP had a larger increase in post-procedural cervical HIV shedding than cryotherapy. Benefits of cervical cancer prevention outweigh the risk of HIV sexual transmission; our findings underscore the importance of risk-reduction counseling. Clinical Trials Registration NCT01298596.
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Affiliation(s)
- Sharon A Greene
- Department of Global Health, University of Washington, Seattle
- Department of Epidemiology, University of Washington, Seattle
| | | | - Dara A Lehman
- Department of Global Health, University of Washington, Seattle
- Division of Human Biology, Fred Hutchinson Cancer Research Center,
Seattle
| | - Kara G Marson
- Department of Global Health, University of Washington, Seattle
| | - T Tony Trinh
- Department of Global Health, University of Washington, Seattle
| | - Nelly Yatich
- Department of Global Health, University of Washington, Seattle
| | | | | | - Barbra A Richardson
- Department of Global Health, University of Washington, Seattle
- Department of Biostatistics, University of Washington, Seattle
- Division of Vaccine and Infectious Diseases, Fred Hutchinson Cancer Research
Center, Seattle
| | - Grace C John-Stewart
- Department of Global Health, University of Washington, Seattle
- Department of Epidemiology, University of Washington, Seattle
- Department of Medicine, Division of Allergy and Infectious Diseases,
University of Washington, Seattle
| | - Hugo De Vuyst
- Infection and Cancer Epidemiology Group, International Agency for Research on
Cancer, Lyon, France
| | | | - Nelly R Mugo
- Department of Global Health, University of Washington, Seattle
| | - Michael H Chung
- Department of Global Health, University of Washington, Seattle
- Department of Epidemiology, University of Washington, Seattle
- Department of Medicine, Division of Allergy and Infectious Diseases,
University of Washington, Seattle
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23
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Perciani CT, Jaoko W, Walmsley S, Farah B, Mahmud SM, Ostrowski M, Anzala O, Team KI, MacDonald KS. Protocol of a randomised controlled trial characterising the immune responses induced by varicella-zoster virus (VZV) vaccination in healthy Kenyan women: setting the stage for a potential VZV-based HIV vaccine. BMJ Open 2017; 7:e017391. [PMID: 28939581 PMCID: PMC5623463 DOI: 10.1136/bmjopen-2017-017391] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
INTRODUCTION A protective HIV vaccine would be expected to induce durable effector immune responses at the mucosa, restricting HIV infection at its portal of entry. We hypothesise that use of varicella-zoster virus (VZV) as an HIV delivery vector could generate sustained and robust tissue-based immunity against HIV antigens to provide long-term protection against HIV. Given that HIV uniquely targets immune-activated T cells, the development of human vaccines against HIV must also involve a specific examination of the safety of the vector. Thus, we aim to evaluate the effects of VZV vaccination on the recipients' immune activation state, and on VZV-specific circulating humoral and cellular responses in addition to those at the cervical and rectal mucosa. METHODS AND ANALYSIS This open-label, randomised, longitudinal crossover study includes healthy Kenyan VZV-seropositive women at low risk for HIV infection. Participants receive a single dose of a commercial live-attenuated VZVOka vaccine at either week 0 (n=22) or at week 12 (n=22) of the study and are followed for 48 and 36 weeks postvaccination, respectively. The primary outcome is the change on cervical CD4+ T-cell immune activation measured by the coexpression of CD38 and HLA-DR 12 weeks postvaccination compared with the baseline (prevaccination). Secondary analyses include postvaccination changes in VZV-specific mucosal and systemic humoral and cellular immune responses, changes in cytokine and chemokine measures, study acceptability and feasibility of mucosal sampling and a longitudinal assessment of the bacterial community composition of the mucosa. ETHICS AND DISSEMINATION The study has ethical approval from Kenyatta National Hospital/University of Nairobi Ethics and Research Committee, the University of Toronto Research Ethics Board and by Kenyan Pharmacy and Poisons Board. Results will be presented at conferences, disseminated to participants and stakeholders as well as published in peer-reviewed journals. TRIAL REGISTRATION NUMBER NCT02514018. Pre-results.
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Affiliation(s)
- Catia T Perciani
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Walter Jaoko
- Kenyan AIDS Vaccine Initiative-Institute of Clinical Research (KAVI-ICR), Nairobi, Kenya
- Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya
| | - Sharon Walmsley
- Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Bashir Farah
- Kenyan AIDS Vaccine Initiative-Institute of Clinical Research (KAVI-ICR), Nairobi, Kenya
| | - Salaheddin M Mahmud
- Community Health Sciences, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Mario Ostrowski
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Omu Anzala
- Kenyan AIDS Vaccine Initiative-Institute of Clinical Research (KAVI-ICR), Nairobi, Kenya
- Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya
| | - Kavi-Icr Team
- Kenyan AIDS Vaccine Initiative-Institute of Clinical Research (KAVI-ICR), Nairobi, Kenya
| | - Kelly S MacDonald
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
- Section of Infectious Diseases, Department of Internal Medicine, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
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24
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Posavad CM, Zhao L, Dong L, Jin L, Stevens CE, Magaret AS, Johnston C, Wald A, Zhu J, Corey L, Koelle DM. Enrichment of herpes simplex virus type 2 (HSV-2) reactive mucosal T cells in the human female genital tract. Mucosal Immunol 2017; 10:1259-1269. [PMID: 28051084 PMCID: PMC5496807 DOI: 10.1038/mi.2016.118] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 11/21/2016] [Indexed: 02/04/2023]
Abstract
Local mucosal cellular immunity is critical in providing protection from HSV-2. To characterize and quantify HSV-2-reactive mucosal T cells, lymphocytes were isolated from endocervical cytobrush and biopsy specimens from 17 HSV-2-infected women and examined ex vivo for the expression of markers associated with maturation and tissue residency and for functional T-cell responses to HSV-2. Compared with their circulating counterparts, cervix-derived CD4+ and CD8+ T cells were predominantly effector memory T cells (CCR7-/CD45RA-) and the majority expressed CD69, a marker of tissue residency. Co-expression of CD103, another marker of tissue residency, was highest on cervix-derived CD8+ T cells. Functional HSV-2 reactive CD4+ and CD8+ T-cell responses were detected in cervical samples and a median of 17% co-expressed CD103. HSV-2-reactive CD4+ T cells co-expressed IL-2 and were significantly enriched in the cervix compared with blood. This first direct ex vivo documentation of local enrichment of HSV-2-reactive T cells in the human female genital mucosa is consistent with the presence of antigen-specific tissue-resident memory T cells. Ex vivo analysis of these T cells may uncover tissue-specific mechanisms of local control of HSV-2 to assist the development of vaccine strategies that target protective T cells to sites of HSV-2 infection.
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Affiliation(s)
- Christine M. Posavad
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Laboratory Medicine, University of Washington, Seattle, WA
| | - Lin Zhao
- Department of Laboratory Medicine, University of Washington, Seattle, WA
| | - Lichun Dong
- Department of Medicine, University of Washington, Seattle, WA
| | - Lei Jin
- Department of Laboratory Medicine, University of Washington, Seattle, WA
| | | | - Amalia S. Magaret
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Laboratory Medicine, University of Washington, Seattle, WA,Department of Biostatistics, University of Washington, Seattle, WA
| | - Christine Johnston
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Medicine, University of Washington, Seattle, WA
| | - Anna Wald
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Laboratory Medicine, University of Washington, Seattle, WA,Department of Medicine, University of Washington, Seattle, WA,Department of Epidemiology, University of Washington, Seattle, WA
| | - Jia Zhu
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Laboratory Medicine, University of Washington, Seattle, WA
| | - Lawrence Corey
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Laboratory Medicine, University of Washington, Seattle, WA,Department of Medicine, University of Washington, Seattle, WA
| | - David M. Koelle
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Laboratory Medicine, University of Washington, Seattle, WA,Department of Medicine, University of Washington, Seattle, WA,Department of Global Health, University of Washington, Seattle, WA,Benaroya Research Institute, Seattle, WA
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25
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Dryden-Peterson S, Bvochora-Nsingo M, Suneja G, Efstathiou JA, Grover S, Chiyapo S, Ramogola-Masire D, Kebabonye-Pusoentsi M, Clayman R, Mapes AC, Tapela N, Asmelash A, Medhin H, Viswanathan AN, Russell AH, Lin LL, Kayembe MK, Mmalane M, Randall TC, Chabner B, Lockman S. HIV Infection and Survival Among Women With Cervical Cancer. J Clin Oncol 2016; 34:3749-3757. [PMID: 27573661 PMCID: PMC5477924 DOI: 10.1200/jco.2016.67.9613] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Purpose Cervical cancer is the leading cause of cancer death among the 20 million women with HIV worldwide. We sought to determine whether HIV infection affected survival in women with invasive cervical cancer. Patients and Methods We enrolled sequential patients with cervical cancer in Botswana from 2010 to 2015. Standard treatment included external beam radiation and brachytherapy with concurrent cisplatin chemotherapy. The effect of HIV on survival was estimated by using an inverse probability weighted marginal Cox model. Results A total of 348 women with cervical cancer were enrolled, including 231 (66.4%) with HIV and 96 (27.6%) without HIV. The majority (189 [81.8%]) of women with HIV received antiretroviral therapy before cancer diagnosis. The median CD4 cell count for women with HIV was 397 (interquartile range, 264 to 555). After a median follow-up of 19.7 months, 117 (50.7%) women with HIV and 40 (41.7%) without HIV died. One death was attributed to HIV and the remaining to cancer. Three-year survival for the women with HIV was 35% (95% CI, 27% to 44%) and 48% (95% CI, 35% to 60%) for those without HIV. In an adjusted analysis, HIV infection significantly increased the risk for death among all women (hazard ratio, 1.95; 95% CI, 1.20 to 3.17) and in the subset that received guideline-concordant curative treatment (hazard ratio, 2.63; 95% CI, 1.05 to 6.55). The adverse effect of HIV on survival was greater for women with a more-limited stage cancer ( P = .035), those treated with curative intent ( P = .003), and those with a lower CD4 cell count ( P = .036). Advanced stage and poor treatment completion contributed to high mortality overall. Conclusion In the context of good access to and use of antiretroviral treatment in Botswana, HIV infection significantly decreases cervical cancer survival.
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Affiliation(s)
- Scott Dryden-Peterson
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Memory Bvochora-Nsingo
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Gita Suneja
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Jason A. Efstathiou
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Surbhi Grover
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Sebathu Chiyapo
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Doreen Ramogola-Masire
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Malebogo Kebabonye-Pusoentsi
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Rebecca Clayman
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Abigail C. Mapes
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Neo Tapela
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Aida Asmelash
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Heluf Medhin
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Akila N. Viswanathan
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Anthony H. Russell
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Lilie L. Lin
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Mukendi K.A. Kayembe
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Mompati Mmalane
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Thomas C. Randall
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Bruce Chabner
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
| | - Shahin Lockman
- Scott Dryden-Peterson, Akila N. Viswanathan, and Shahin Lockman, Brigham and Women’s Hospital; Scott Dryden-Peterson and Shahin Lockman, Harvard T.H. Chan School of Public Health; Scott Dryden-Peterson, Jason A. Efstathiou, Akila N. Viswanathan, Anthony H. Russell, Thomas C. Randall, Bruce Chabner, and Shahin Lockman, Harvard Medical School; Jason A. Efstathiou, Rebecca Clayman, Anthony H. Russell, Thomas C. Randall, and Bruce Chabner, Massachusetts General Hospital; Akila N. Viswanathan, Dana-Farber Cancer Institute, Boston, MA; Scott Dryden-Peterson, Abigail C. Mapes, Neo Tapela, Aida Asmelash, Mompati Mmalane, and Shahin Lockman, Botswana Harvard AIDS Institute Partnership; Memory Bvochora-Nsingo, Gaborone Private Hospital; Sebathu Chiyapo, Princess Marina Hospital; Doreen Ramogola-Masire, Botswana-University of Pennsylvania Partnership; Malebogo Kebabonye-Pusoentsi, Neo Tapela, Heluf Medhin, and Mukendi K.A. Kayembe, Botswana Ministry of Health, Gaborone, Botswana; Gita Suneja, University of Utah School of Medicine, Salt Lake City, UT; and Surbhi Grover and Lilie L. Lin, University of Pennsylvania, Philadelphia, PA
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Abstract
PURPOSE OF REVIEW Women who have genital inflammation are at increased risk of sexual HIV infection. The purpose of this review is to evaluate the mechanisms for this relationship, causes of genital inflammation, and strategies to manage this condition. RECENT FINDINGS We have recently shown in a cohort of South African women that HIV seroconversion was associated with persistently raised genital inflammatory cytokines (including MIP-1α, MIP-1β, and IP-10). Elevated inflammatory cytokine concentrations may facilitate HIV infection by recruiting and activating HIV target cells and disrupting the mucosal epithelial barrier. Bacterial vaginosis and sexually transmitted infections (STIs), which are predominantly asymptomatic in women, cause lower genital tract inflammation and increased HIV acquisition risk. In Africa, where syndromic management of STIs and bacterial vaginosis is standard-of-care, the substantial burden of asymptomatic infections has likely contributed to high-HIV incidence rates. SUMMARY A genital inflammatory profile contributes to the high risk of HIV acquisition in African women. STIs and bacterial vaginosis are poorly managed in Africa and other developing nations and as such remain major drivers of persistent genital inflammation and HIV acquisition among these women.
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Barillari G, Palladino C, Bacigalupo I, Leone P, Falchi M, Ensoli B. Entrance of the Tat protein of HIV-1 into human uterine cervical carcinoma cells causes upregulation of HPV-E6 expression and a decrease in p53 protein levels. Oncol Lett 2016; 12:2389-2394. [PMID: 27698804 PMCID: PMC5038842 DOI: 10.3892/ol.2016.4921] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 06/16/2016] [Indexed: 11/15/2022] Open
Abstract
The infection of uterine cervical epithelial cells by oncogenic, high-risk human papilloma viruses (HR-HPVs) may lead to the development of cervical carcinoma. Of note, the incidence of this tumor is significantly increased in women infected by both HR-HPV and human immunodeficiency virus (HIV)-1. In this regard, previous studies have linked the HIV-1 Tat protein, a trans-activator of viral gene expression, to the pathogenesis of HIV-associated malignancies. In particular, it has been shown that upon its release by acutely infected cells, Tat protein can enter human cells, thus modifying their phenotype. Based on these findings, the present study evaluated whether extracellular Tat protein could be taken up by human uterine cervical carcinoma cells, and whether this could affect the expression of HPV (E6 or E7) or cellular (p16 or p53) molecules, which are key to cervical carcinoma development or progression. The results indicated that extracellular, biologically active HIV-1 Tat protein is taken up by human uterine cervical carcinoma cells, and that this is followed by an increase in the expression of the E6 protein of HPV, and by a reduction in the protein levels of the cellular oncosuppressor p53. Since p53 loss is associated with cell dedifferentiation and immortalization, these findings suggest a possible link between extracellular Tat protein and the high incidence and clinical aggressiveness of uterine cervical carcinoma observed in HIV/HPV doubly infected women.
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Affiliation(s)
- Giovanni Barillari
- Department of Clinical Sciences and Translational Medicine, University 'Tor Vergata', I-00133 Rome, Italy
| | - Clelia Palladino
- National AIDS Center, National Institute of Health, I-00161 Rome, Italy
| | - Ilaria Bacigalupo
- National AIDS Center, National Institute of Health, I-00161 Rome, Italy
| | - Patrizia Leone
- National AIDS Center, National Institute of Health, I-00161 Rome, Italy
| | - Mario Falchi
- National AIDS Center, National Institute of Health, I-00161 Rome, Italy
| | - Barbara Ensoli
- National AIDS Center, National Institute of Health, I-00161 Rome, Italy
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Shey MS, Maharaj N, Archary D, Ngcapu S, Garrett N, Abdool Karim S, Passmore JAS. Modulation of Female Genital Tract-Derived Dendritic Cell Migration and Activation in Response to Inflammatory Cytokines and Toll-Like Receptor Agonists. PLoS One 2016; 11:e0155668. [PMID: 27171482 PMCID: PMC4865202 DOI: 10.1371/journal.pone.0155668] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 05/01/2016] [Indexed: 12/25/2022] Open
Abstract
HIV transmission across the genital mucosa is a major mode of new HIV infections in women. The probability of infection may be influenced by several factors including recruitment and activation of HIV target cells, such as dendritic cells (DCs) and cytokine production, associated with genital inflammation. We evaluated the role of inflammatory cytokines and TLR signaling in migration and activation of genital tract DCs in the human cervical explant model. Hysterectomy tissues from 10 HIV-negative and 7 HIV-positive donor women were separated into ecto- and endocervical explants, and incubated with inflammatory cytokines (TNF-α, IL-1β, IL-8, MIP-1β) or agonists for TLR4 (LPS), TLR2/1 (PAM3) and TLR7/8 (R848). Migration (frequency) and activation (HLA-DR expression) of myeloid and plasmacytoid DCs and Langerhans cells were measured by flow cytometry. We observed that cytokines, LPS and PAM3 induced activation of migrating myeloid and plasmacytoid DCs. LPS induced a 3.6 fold lower levels of migration of plasmacytoid DCs from HIV-infected women compared with HIV-uninfected women (median activation indices of 2.932 vs 0.833). There was however a 4.5 fold increase in migration of Langerhans cells in HIV-infected compared with HIV-uninfected women in response to cytokines (median activation indices of 3.539 vs 0.77). Only TLR agonists induced migration and activation of DCs from endocervical explants. Hormonal contraception use was associated with an increase in activation of DC subsets in the endo and ectocervical explants. We conclude that inflammatory signals in the female genital tract induced DC migration and activation, with possible important implications for HIV susceptibility of cervical tissues.
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Affiliation(s)
- Muki S. Shey
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
- Institute of Infectious Diseases and Molecular Medicine (IDM), Clinical Infectious Diseases Research Initiative (CIDRI), University of Cape Town, Cape Town, South Africa
- * E-mail:
| | - Niren Maharaj
- Department of Gynaecology and Obstetrics, Prince Mshiyeni Hospital, Durban, South Africa
| | - Derseree Archary
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
| | - Sinaye Ngcapu
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
| | - Nigel Garrett
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
| | - Salim Abdool Karim
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, United States of America
| | - Jo-Ann S. Passmore
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
- National Health Laboratory Services, Cape Town, South Africa
- Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Medical Virology, University of Cape Town, Cape Town, South Africa
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Mkhize NN, Durgiah R, Ashley V, Archary D, Garrett NJ, Karim QA, Karim SSA, Moore PL, Yates N, Passmore JAS, Tomaras GD, Morris L. Broadly neutralizing antibody specificities detected in the genital tract of HIV-1 infected women. AIDS 2016; 30:1005-14. [PMID: 26836790 PMCID: PMC4816677 DOI: 10.1097/qad.0000000000001038] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Broadly neutralizing antibodies (bNAbs) targeting conserved epitopes on the HIV envelope glycoprotein have been identified in blood from HIV-1 infected women. We investigated whether antibodies in the genital tract from these women share similar epitope specificities and functional profiles as those in blood. METHODS Immunoglobulin (Ig)G and IgA antibodies were isolated from cervicovaginal lavages or Softcups from 13 HIV-infected women in the CAPRISA cohort using Protein G and Peptide M, respectively. Binding antibodies to envelope antigens were quantified by ELISA and binding antibody multiplex assay. Neutralizing antibody titers and epitope targets were measured using the TZM-bl assay with Env-pseudotyped wild-type and mutated viruses. RESULTS HIV-specific IgG, but not IgA, was detected in genital secretions and the ratio of total IgG to HIV-specific IgG was similar to plasma. HIV-specific IgG reacted with multiple envelope antigens, including V1V2, gp120, gp140 and gp41. Two women had high plasma titers of HIV-specific IgG3 which was also detected in their genital tract samples. IgG from the genital tract had neutralizing activity against both Tier 1 and Tier 2 primary HIV-isolates. Antibodies targeting well known glycan epitopes and the membrane proximal region of gp41 were detected in genital secretions, and matched specificities in plasma. CONCLUSIONS Women with plasma bNAbs have overlapping specificities in their genital secretions, indicating that these predominantly IgG isotype antibodies may transudate from blood to the genital tract. These data provide evidence that induction of systemic HIV-specific bNAbs can lead to antiviral immunity at the portal of entry.
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Affiliation(s)
- Nonhlanhla N. Mkhize
- National Institute for Communicable Diseases, Johannesburg, South Africa
- University of the Witwatersrand, Johannesburg, South Africa
| | - Raveshni Durgiah
- National Institute for Communicable Diseases, Johannesburg, South Africa
| | - Vicki Ashley
- Duke Human Vaccine Institute and Departments of Surgery, Immunology and Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina 27710
| | - Derseree Archary
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
| | - Nigel J. Garrett
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
| | - Quarraisha Abdool Karim
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
| | - Salim S. Abdool Karim
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
| | - Penny L. Moore
- National Institute for Communicable Diseases, Johannesburg, South Africa
- University of the Witwatersrand, Johannesburg, South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
| | - Nicole Yates
- Duke Human Vaccine Institute and Departments of Surgery, Immunology and Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina 27710
| | - Jo-Ann S. Passmore
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
- University of Cape Town, Cape Town, South Africa
- National Health Laboratory Services, South Africa
| | - Georgia D. Tomaras
- Duke Human Vaccine Institute and Departments of Surgery, Immunology and Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina 27710
| | - Lynn Morris
- National Institute for Communicable Diseases, Johannesburg, South Africa
- University of the Witwatersrand, Johannesburg, South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban, South Africa
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30
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Kriek JM, Jaumdally SZ, Masson L, Little F, Mbulawa Z, Gumbi PP, Barnabas SL, Moodley J, Denny L, Coetzee D, Williamson AL, Passmore JAS. Female genital tract inflammation, HIV co-infection and persistent mucosal Human Papillomavirus (HPV) infections. Virology 2016; 493:247-54. [PMID: 27065342 DOI: 10.1016/j.virol.2016.03.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 03/24/2016] [Accepted: 03/28/2016] [Indexed: 12/21/2022]
Abstract
BACKGROUND Persistent genital infections with high-risk HPV types increase risk of cervical disease and cancer. Since genital inflammation increases HIV acquisition risk and cancer progression, we evaluated whether HPV infection induces cytokine expression in the reproductive tract. METHODS Genital cytokines concentrations were measured in 93 HIV-infected and 72 uninfected women. HPV typing was done by Roche Linear array. Persistence and clearance of HPV were evaluated using longitudinal data. RESULTS Infection with HPV did not influence genital cytokine concentrations. In contrast, HIV-infected women had higher IL-1α, IL-6, IL-8, IP-10, MCP-1 and G-CSF concentrations compared to HIV-uninfected women, and HPV-infections that were more prevalent, persistent and multi-type. CONCLUSION HPV did not influence inflammatory cytokine levels in the genital tract, although immune suppression may favor persistence.
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Affiliation(s)
- Jean-Mari Kriek
- Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Shameem Z Jaumdally
- Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Lindi Masson
- Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Francesca Little
- Department of Statistical Science, University of Cape Town, Cape Town, South Africa
| | - Zizipho Mbulawa
- Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; Center for HIV and STIs National Institute for Communicable Disease, National Health Laboratory Service, South Africa
| | - Pamela P Gumbi
- Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Shaun L Barnabas
- Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; Desmond Tutu HIV Foundation, University of Cape Town, Cape Town, South Africa
| | - Jennifer Moodley
- UCT/MRC Clinical Gynaecological Cancer Research Centre, University of Cape Town, Cape Town, South Africa; Cancer Research Initiative, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; Women׳s Health Research Unit, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Lynette Denny
- UCT/MRC Clinical Gynaecological Cancer Research Centre, University of Cape Town, Cape Town, South Africa; Department of Obstetrics and Gynaecology, University of Cape Town/Groote Schuur Hospital, Cape Town, South Africa
| | - David Coetzee
- School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Anna-Lise Williamson
- Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; UCT/MRC Clinical Gynaecological Cancer Research Centre, University of Cape Town, Cape Town, South Africa; National Health Laboratory Service, South Africa
| | - Jo-Ann S Passmore
- Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; UCT/MRC Clinical Gynaecological Cancer Research Centre, University of Cape Town, Cape Town, South Africa; National Health Laboratory Service, South Africa.
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31
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Deniger DC, Pasetto A, Tran E, Parkhurst MR, Cohen CJ, Robbins PF, Cooper LJ, Rosenberg SA. Stable, Nonviral Expression of Mutated Tumor Neoantigen-specific T-cell Receptors Using the Sleeping Beauty Transposon/Transposase System. Mol Ther 2016; 24:1078-1089. [PMID: 26945006 DOI: 10.1038/mt.2016.51] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 02/21/2016] [Indexed: 12/12/2022] Open
Abstract
Neoantigens unique to each patient's tumor can be recognized by autologous T cells through their T-cell receptor (TCR) but the low frequency and/or terminal differentiation of mutation-specific T cells in tumors can limit their utility as adoptive T-cell therapies. Transfer of TCR genes into younger T cells from peripheral blood with a high proliferative potential could obviate this problem. We generated a rapid, cost-effective strategy to genetically engineer cancer patient T cells with TCRs using the clinical Sleeping Beauty transposon/transposase system. Patient-specific TCRs reactive against HLA-A*0201-restriced neoantigens AHNAK(S2580F) or ERBB2(H473Y) or the HLA-DQB*0601-restricted neoantigen ERBB2IP(E805G) were assembled with murine constant chains and cloned into Sleeping Beauty transposons. Patient peripheral blood lymphocytes were coelectroporated with SB11 transposase and Sleeping Beauty transposon, and transposed T cells were enriched by sorting on murine TCRβ (mTCRβ) expression. Rapid expansion of mTCRβ(+) T cells with irradiated allogeneic peripheral blood lymphocytes feeders, OKT3, interleukin-2 (IL-2), IL-15, and IL-21 resulted in a preponderance of effector (CD27(-)CD45RA(-)) and less-differentiated (CD27(+)CD45RA(+)) T cells. Transposed T cells specifically mounted a polyfunctional response against cognate mutated neoantigens and tumor cell lines. Thus, Sleeping Beauty transposition of mutation-specific TCRs can facilitate the use of personalized T-cell therapy targeting unique neoantigens.
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Affiliation(s)
- Drew C Deniger
- Surgery Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Anna Pasetto
- Surgery Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Eric Tran
- Surgery Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Maria R Parkhurst
- Surgery Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Cyrille J Cohen
- Tumor Immunology and Immunotherapy, Bar-Ilan University, Ramat Gan, Israel
| | - Paul F Robbins
- Surgery Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Laurence Jn Cooper
- Division of Pediatrics, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA; ZIOPHARM Oncology, Inc., Boston, Massachusetts, USA
| | - Steven A Rosenberg
- Surgery Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA.
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32
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Kaul R, Prodger J, Joag V, Shannon B, Yegorov S, Galiwango R, McKinnon L. Inflammation and HIV Transmission in Sub-Saharan Africa. Curr HIV/AIDS Rep 2016; 12:216-22. [PMID: 25877253 DOI: 10.1007/s11904-015-0269-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
While the per-contact risk of sexual HIV transmission is relatively low, it is fourfold higher in sub-Saharan Africa, and this may partly explain the major global disparities that exist in HIV prevalence. Genital immune parameters are key determinants of HIV transmission risk, including epithelial integrity and the presence of highly HIV-susceptible intraepithelial or submucosal CD4+ T cell target cells. Biological parameters that may enhance mucosal HIV susceptibility in highly HIV-affected regions of sub-Saharan Africa include increased levels of mucosal inflammation, which can affect both epithelial integrity and target cell availability, as well as the increased mucosal surface area that is afforded by an intact foreskin, contraceptive choices, and intravaginal practices. There are multifactorial causes for increased mucosal inflammation, with the prevalence and nature of common co-infections being particularly relevant.
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Affiliation(s)
- Rupert Kaul
- Departments of Medicine and Immunology, University of Toronto, Medical Sciences Building Rm. 6356, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada,
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Olesen R, Swanson MD, Kovarova M, Nochi T, Chateau M, Honeycutt JB, Long JM, Denton PW, Hudgens MG, Richardson A, Tolstrup M, Østergaard L, Wahl A, Garcia JV. ART influences HIV persistence in the female reproductive tract and cervicovaginal secretions. J Clin Invest 2016; 126:892-904. [PMID: 26854925 DOI: 10.1172/jci64212] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 12/10/2015] [Indexed: 11/17/2022] Open
Abstract
The recently completed HIV prevention trials network study 052 is a landmark collaboration demonstrating that HIV transmission in discordant couples can be dramatically reduced by treating the infected individual with antiretroviral therapy (ART). However, the cellular and virological events that occur in the female reproductive tract (FRT) during ART that result in such a drastic decrease in transmission were not studied and remain unknown. Here, we implemented an in vivo model of ART in BM/liver/thymus (BLT) humanized mice in order to better understand the ability of ART to prevent secondary HIV transmission. We demonstrated that the entire FRT of BLT mice is reconstituted with human CD4+ cells that are shed into cervicovaginal secretions (CVS). A high percentage of the CD4+ T cells in the FRT and CVS expressed CCR5 and therefore are potential HIV target cells. Infection with HIV increased the numbers of CD4+ and CD8+ T cells in CVS of BLT mice. Furthermore, HIV was present in CVS during infection. Finally, we evaluated the effect of ART on HIV levels in the FRT and CVS and demonstrated that ART can efficiently suppress cell-free HIV-RNA in CVS, despite residual levels of HIV-RNA+ cells in both the FRT and CVS.
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Dehon PM, Hagensee ME, Sutton KJ, Oddo HE, Nelson N, McGowin CL. Histological Evidence of Chronic Mycoplasma genitalium-Induced Cervicitis in HIV-Infected Women: A Retrospective Cohort Study. J Infect Dis 2016; 213:1828-35. [PMID: 26783349 DOI: 10.1093/infdis/jiw025] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 01/10/2016] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Mycoplasma genitalium is an emerging sexually transmitted pathogen implicated in inflammatory syndromes of the female reproductive tract. The objective of this study was to investigate human immunodeficiency virus (HIV)-infected women for an association between M. genitalium and cervicitis, a putative mechanism for enhanced HIV transmission efficiency to an uninfected partner. METHODS Using a longitudinal cohort of antiretroviral therapy-adherent New Orleans women, we retrospectively screened for M. genitalium and quantitatively characterized several markers of cervical inflammation, including secreted cytokines and cytological and histological signs of leukocyte infiltration. RESULTS We observed a high prevalence of M. genitalium (7.4%) among HIV-infected New Orleans women. Chronic M. genitalium infection was associated with increased secretion of proinflammatory cytokines, including interleukin 1β, interleukin 6, and interleukin 8, and marked inflammatory cervical infiltrates in the cervix with enrichment of HIV target cells. Cure of M. genitalium infection resulted in ablation of all signs of inflammation. CONCLUSIONS These findings implicate M. genitalium as an etiologic agent of cervicitis in HIV-infected women, providing a potential mechanism for enhanced HIV transmission to an uninfected partner. Screening and treatment of M. genitalium among HIV-infected individuals may be warranted to further understand this coinfection scenario, improve cervical health, and reduce the spread of HIV.
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Affiliation(s)
| | - Michael E Hagensee
- Department of Microbiology, Immunology, and Parasitology Section of Infectious Diseases, Department of Internal Medicine, Louisiana State University Health Sciences Center, New Orleans
| | | | - Hope E Oddo
- Department of Microbiology, Immunology, and Parasitology
| | - Nia Nelson
- Department of Microbiology, Immunology, and Parasitology
| | - Chris L McGowin
- Department of Microbiology, Immunology, and Parasitology Section of Infectious Diseases, Department of Internal Medicine, Louisiana State University Health Sciences Center, New Orleans
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35
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Meditz AL, Palmer C, Predhomme J, Searls K, Kerr B, Seifert S, Caraway P, Gardner EM, MaWhinney S, Anderson PL. Relationship Between Genital Drug Concentrations and Cervical Cellular Immune Activation and Reconstitution in HIV-1-Infected Women on a Raltegravir Versus a Boosted Atazanavir Regimen. AIDS Res Hum Retroviruses 2015; 31:1015-22. [PMID: 26059647 DOI: 10.1089/aid.2014.0301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Determinants of HIV-infected women's genital tract mucosal immune health are not well understood. Because raltegravir (RAL) achieves relatively higher genital tract concentrations than ritonavir-boosted atazanavir (ATV), we examined whether an RAL-based regimen is associated with improved cervical immune reconstitution and less activation in HIV(+) women compared to an ATV-based regimen. Peripheral blood, cervical brushings, cervical-vaginal lavage (CVL), and cervical biopsies were collected from HIV(+) women on tenofovir disoproxil fumarate and emtricitabine (TDF/FTC) and either RAL (n=14) or ATV (n=19) with CD4(+) T cells>300 cells/mm(3) and HIV RNA<48 copies/ml. HLA-DR(+)CD38(+) T cells were measured in blood and cervical cells using flow cytometry, CD4(+) and CD8(+) T cells were quantified in cervical biopsies by immunofluorescent analysis, and HIV RNA (VL), ATV, and RAL concentrations were measured in CVL. In a linear regression model of log(CVL concentration) versus both log(plasma concentration) and treatment group, the RAL CVL level was 519% (95% CI: 133, 1,525%) higher than for ATV (p<0.001). Genital tract VL was undetectable in 90% of subjects and did not differ by regimen. There were no significant differences between groups in terms of cervical %HLA-DR(+)CD38(+)CD4(+) or CD8(+) T cells, CD4(+) or CD8(+) T cells/mm(2), or CD4:CD8 ratio. After adjusting for treatment time and group, the CVL:plasma drug ratio was not associated with the cervical CD4:CD8 ratio or immune activation (p>0.6). Despite significantly higher genital tract penetration of RAL compared to ATV, there were no significant differences in cervical immune activation or reconstitution between women on these regimens, suggesting both drug regimens achieve adequate genital tract levels to suppress virus replication.
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Affiliation(s)
| | | | | | | | - Becky Kerr
- University of Colorado, Aurora, Colorado
| | | | | | - Edward M. Gardner
- University of Colorado, Aurora, Colorado
- Denver Public Health, Denver, Colorado
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Pellett Madan R, Dezzutti CS, Rabe L, Hillier SL, Marrazzo J, McGowan I, Richardson BA, Herold BC. Soluble Immune Mediators and Vaginal Bacteria Impact Innate Genital Mucosal Antimicrobial Activity in Young Women. Am J Reprod Immunol 2015; 74:323-32. [PMID: 26118476 DOI: 10.1111/aji.12412] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 06/01/2015] [Indexed: 11/27/2022] Open
Abstract
INTRODUCTION Innate activity against Escherichia coli in female genital secretions may represent contributions from vaginal bacteria and host soluble immune mediators. We analyzed the relationship between E. coli inhibitory activity, soluble immune mediators, and vaginal bacteria in participants in MTN-004, a placebo-controlled trial of VivaGel(®) , a candidate product for topical HIV pre-exposure prophylaxis. METHODS Escherichia coli inhibitory activity was quantified by colony reduction assay. Endocervical concentrations of interleukin (IL)-1β, IL-6, IL-12p40, macrophage inflammatory protein (MIP)-1α, granulocyte-macrophage colony-stimulating factor (GM-CSF), lactoferrin, and secretory leukocyte protease inhibitor (SLPI) were quantified to generate a cumulative mediator score. Vaginal bacteria were characterized by quantitative cultures. RESULTS In the two placebo arms, higher soluble immune mediator score was associated with greater E. coli inhibitory activity (β = 17.49, 95% CI [12.77, 22.21] and β = 13.28, 95% CI [4.76, 21.80]). However, in the VivaGel arm, higher concentrations of E. coli (β = -3.80, 95% CI [-6.36, -1.25]) and group B Streptococcus (β = -3.91, 95% CI [-6.21, -1.60]) were associated with reduced E. coli inhibitory activity. CONCLUSIONS Both host mediators and vaginal bacteria impact E. coli inhibition in genital secretions. The relative contributions of host mediators and bacteria varied between women who used VivaGel vs placebos.
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Affiliation(s)
| | - Charlene S Dezzutti
- Magee-Womens Research Institute, Pittsburgh, PA, USA.,Department of Obstetrics, Gynecology & Reproductive Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Lorna Rabe
- Magee-Womens Research Institute, Pittsburgh, PA, USA
| | - Sharon L Hillier
- Magee-Womens Research Institute, Pittsburgh, PA, USA.,Department of Obstetrics, Gynecology & Reproductive Sciences, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jeanne Marrazzo
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Ian McGowan
- Magee-Womens Research Institute, Pittsburgh, PA, USA.,Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Barbra A Richardson
- Departments of Biostatistics and Global Health, University of Washington, Seattle, WA, USA.,Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Betsy C Herold
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY, USA
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Early HIV-1 infection is associated with reduced frequencies of cervical Th17 cells. J Acquir Immune Defic Syndr 2015; 68:6-12. [PMID: 25296095 DOI: 10.1097/qai.0000000000000389] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND The hallmark of HIV infection is progressive but variable rates of systemic and mucosal CD4 depletion, leading to immunodeficiency. The impact of early HIV infection on cervical CD4 T-cell populations in humans remains poorly described. METHODS We analyzed cytobrush-derived immune cells by flow cytometry and cytokines in cervicovaginal lavage from participants in early HIV (<6 months postinfection), chronic HIV, and HIV-uninfected controls. RESULTS CD4:CD8 ratios declined rapidly in both the cervix and the blood following HIV infection. In contrast, absolute cervical CD4 T-cell counts in early HIV were comparable to HIV-uninfected participants, declining only in chronic infection. Early HIV infection was associated with increases in RANTES and MIP3a in cervicovaginal fluids. Concurrently, slight increases in activated cells (CD38HLA-DR) and higher levels of CTLA4 expression on Tregs in the cervix were observed. Although study groups did not differ with respect to levels of CCR5, integrin B7, or CD69, the frequencies of Th17 cells (defined as CCR6CCR10) was reduced by >10-fold in early HIV infection and Th1 cells (defined as CCR6CXCR3) were reduced by >2-fold. Although CCR6CCR10 cells did not differ in HIV receptor expression, these cells produced higher levels of interferon gamma and interleukin 17. CONCLUSIONS These data support the model of initial CD4 T-cell depletion followed by overall T-cell influx in response to infection and concomitant increases in immune activation, inflammation, and regulatory markers. These data are among the earliest characterization of the cellular milieu in the female genital tract following male-to-female HIV transmission.
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Mucosal immunity in the female genital tract, HIV/AIDS. BIOMED RESEARCH INTERNATIONAL 2014; 2014:350195. [PMID: 25313360 PMCID: PMC4181941 DOI: 10.1155/2014/350195] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 08/27/2014] [Accepted: 08/28/2014] [Indexed: 01/15/2023]
Abstract
Mucosal immunity consists of innate and adaptive immune responses which can be influenced by systemic immunity. Despite having been the subject of intensive studies, it is not fully elucidated what exactly occurs after HIV contact with the female genital tract mucosa. The sexual route is the main route of HIV transmission, with an increased risk of infection in women compared to men. Several characteristics of the female genital tract make it suitable for inoculation, establishment of infection, and systemic spread of the virus, which causes local changes that may favor the development of infections by other pathogens, often called sexually transmitted diseases (STDs). The relationship of these STDs with HIV infection has been widely studied. Here we review the characteristics of mucosal immunity of the female genital tract, its alterations due to HIV/AIDS, and the characteristics of coinfections between HIV/AIDS and the most prevalent STDs.
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Rametse CL, Olivier AJ, Masson L, Barnabas S, McKinnon LR, Ngcapu S, Liebenberg LJ, Jaumdally SZ, Gray CM, Jaspan HB, Passmore JAS. Role of semen in altering the balance between inflammation and tolerance in the female genital tract: does it contribute to HIV risk? Viral Immunol 2014; 27:200-6. [PMID: 24821528 DOI: 10.1089/vim.2013.0136] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
While the main reproduction aim of semen is the transport of spermatozoa to the female genital tract, seminal plasma is a complex fluid that also carries a broad array of immunologically active molecules. Seminal plasma has been shown to contain a diverse array of anti-inflammatory and pro-inflammatory soluble mediators that regulate immune responses within the female reproductive tract than can facilitate fertilization. Since the natural inflammatory response to semen deposition in the female genital tract may result in recruitment of activated HIV target cells into the female genital mucosa, we discuss the constituents of semen that may increase the risk for HIV infection in women.
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Affiliation(s)
- Cosnet L Rametse
- 1 Division of Medical Virology, Institute of Infectious Disease and Molecular Medicine (IDM), University of Cape Town , Cape Town, South Africa
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Gibbs A, Hirbod T, Li Q, Bohman K, Ball TB, Plummer FA, Kaul R, Kimani J, Broliden K, Tjernlund A. Presence of CD8+ T cells in the ectocervical mucosa correlates with genital viral shedding in HIV-infected women despite a low prevalence of HIV RNA-expressing cells in the tissue. THE JOURNAL OF IMMUNOLOGY 2014; 192:3947-57. [PMID: 24639358 DOI: 10.4049/jimmunol.1302826] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The female genital tract is a portal of entry for sexual HIV transmission and a possible viral reservoir. In this study, the ectocervical CD8+ T cell distribution was explored in situ and was related to expression of CD3 and HLA-DR and presence of HIV RNA. For this purpose, ectocervical tissue samples and genital secretions were collected from HIV-seropositive (HIV+) Kenyan female sex workers (FSWs) (n = 20), HIV-seronegative (HIV-) FSWs (n = 17), and HIV(-) lower-risk women (n = 21). Cell markers were assessed by in situ staining and by quantitative PCR. HIV RNA expression in tissue was analyzed by in situ hybridization, and viral shedding was assessed by quantitative PCR. The HIV+ FSW group had a higher amount of total cells and CD8+, CD3+, and HLA-DR+ cells compared with the HIV(-)FSW group and HIV- lower-risk women. The majority of CD8+ cells were CD3+ T cells, and the numbers of CD8+ cells correlated significantly with plasma and cervical viral load. HIV RNA expression in situ was found in 4 of the 20 HIV+FSW women but did not correlate with cervical or plasma viral load. Thus, the HIV+ women displayed high numbers of CD8+, CD3+, and HLA-DR+ cells, as well as a limited number of HIV RNA+ cells, in their ectocervical mucosa; hence, this localization cannot be neglected as a potential viral reservoir. The elevated levels of CD8+ T cells may play a role in the immunopathogenesis of HIV in the female genital tract.
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Affiliation(s)
- Anna Gibbs
- Unit of Infectious Diseases, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, 17176 Stockholm, Sweden
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Jespers V, Harandi AM, Hinkula J, Medaglini D, Grand RL, Stahl-Hennig C, Bogers W, Habib RE, Wegmann F, Fraser C, Cranage M, Shattock RJ, Spetz AL. Assessment of mucosal immunity to HIV-1. Expert Rev Vaccines 2014; 9:381-94. [DOI: 10.1586/erv.10.21] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Bere A, Tayib S, Kriek JM, Masson L, Jaumdally SZ, Barnabas SL, Carr WH, Allan B, Williamson AL, Denny L, Passmore JAS. Altered phenotype and function of NK cells infiltrating human papillomavirus (HPV)-associated genital warts during HIV infection. Clin Immunol 2013; 150:210-9. [PMID: 24440646 DOI: 10.1016/j.clim.2013.12.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 12/04/2013] [Accepted: 12/05/2013] [Indexed: 11/25/2022]
Abstract
HIV-infected individuals experience more persistent HPV infections and are less likely to resolve genital warts. This study compared phenotype and functions of NK and T cells from genital warts and blood from 67 women. We compared in vitro functional responses of NK and T cells by multiparametric flow cytometry. HIV+ women had significantly lower frequencies of CD4 T cells in warts (p = 0.001) and blood (p = 0.001). While the distribution of NK cell subsets was similar, HIV+ women tended to have lower frequencies of CD56(Dim) NK cells in both blood (p = 0.0001) and warts (p = 0.006) than HIV- women. Wart NK cells from HIV+ women expressed significantly lower CD107a and produced IFN-γ. HAART status was not associated with differences in NK cell functionality. We conclude that wart NK cells from HIV+ women have defects in their ability to degranulate and/or secrete IFN-γ, which may provide insights into why HIV+ women fail to spontaneously resolve genital warts.
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Affiliation(s)
- Alfred Bere
- Institute of Infectious Disease and Molecular Medicine and Division of Medical Virology, University of Cape Town, Cape Town, South Africa
| | - Shahila Tayib
- Dept. Obstetrics and Gynaecology, Jalan Taming Sari, Taiping Hospital, Perak, Malaysia
| | - Jean-Mari Kriek
- Institute of Infectious Disease and Molecular Medicine and Division of Medical Virology, University of Cape Town, Cape Town, South Africa
| | - Lindi Masson
- Institute of Infectious Disease and Molecular Medicine and Division of Medical Virology, University of Cape Town, Cape Town, South Africa
| | - Shameem Z Jaumdally
- Institute of Infectious Disease and Molecular Medicine and Division of Medical Virology, University of Cape Town, Cape Town, South Africa
| | - Shaun L Barnabas
- Institute of Infectious Disease and Molecular Medicine and Division of Medical Virology, University of Cape Town, Cape Town, South Africa; Desmond Tutu HIV Foundation, Cape Town, South Africa
| | - William H Carr
- Department of Biology, Medgar Evers College, The City University of New York, NY, USA
| | - Bruce Allan
- Institute of Infectious Disease and Molecular Medicine and Division of Medical Virology, University of Cape Town, Cape Town, South Africa
| | - Anna-Lise Williamson
- Institute of Infectious Disease and Molecular Medicine and Division of Medical Virology, University of Cape Town, Cape Town, South Africa; National Health Laboratory Services, Cape Town, South Africa
| | - Lynette Denny
- Dept Obstetrics and Gynaecology, University of Cape Town and Groote Schuur Hospital, Cape Town, South Africa
| | - Jo-Ann S Passmore
- Institute of Infectious Disease and Molecular Medicine and Division of Medical Virology, University of Cape Town, Cape Town, South Africa; National Health Laboratory Services, Cape Town, South Africa.
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Shanmugasundaram U, Critchfield JW, Pannell J, Perry J, Giudice LC, Smith-McCune K, Greenblatt RM, Shacklett BL. Phenotype and functionality of CD4+ and CD8+ T cells in the upper reproductive tract of healthy premenopausal women. Am J Reprod Immunol 2013; 71:95-108. [PMID: 24313954 DOI: 10.1111/aji.12182] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 10/29/2013] [Indexed: 12/16/2022] Open
Abstract
PROBLEM The goal of this study was to investigate the phenotype and functional responsiveness of CD4(+) and CD8(+) T-cells in the upper reproductive tract of healthy premenopausal women. The lower reproductive tract is frequently studied as a site of sexually transmitted infections; however, the upper reproductive tract may also be a portal of entry and dissemination for pathogens, including HIV-1. METHOD OF STUDY Endometrial biopsy, endocervical curettage, cytobrush, and blood were collected during mid-luteal phase from 23 healthy women. T-cells were isolated and analyzed by flow cytometry. RESULTS As compared with their counterparts in blood, endometrial and endocervical T-cells had enhanced CCR5 expression, and were enriched for activated, effector memory cells. Endometrial T-cells were more responsive to polyclonal stimuli, producing a broad range of cytokines and chemokines. CONCLUSION These findings underscore the responsiveness of endometrial T-cells to stimulation, and reveal their activated phenotype. These findings also suggest susceptibility of the upper reproductive tract to HIV-1 infection.
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Affiliation(s)
- Uma Shanmugasundaram
- Department of Medical Microbiology and Immunology, School of Medicine, University of California, Davis, CA, USA
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Hirbod T, Kimani J, Tjernlund A, Cheruiyot J, Petrova A, Ball TB, Mugo N, Jaoko W, Plummer FA, Kaul R, Broliden K. Stable CD4 Expression and Local Immune Activation in the Ectocervical Mucosa of HIV-Infected Women. THE JOURNAL OF IMMUNOLOGY 2013; 191:3948-54. [DOI: 10.4049/jimmunol.1301220] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Bere A, Denny L, Naicker P, Burgers WA, Passmore JAS. HIV-specific T-cell responses detected in the genital tract of chronically HIV-infected women are largely monofunctional. Immunology 2013; 139:342-51. [PMID: 23374084 DOI: 10.1111/imm.12084] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2012] [Revised: 01/16/2013] [Accepted: 01/25/2013] [Indexed: 02/03/2023] Open
Abstract
HIV-specific T cells that produce interferon-γ (IFN-γ) are present in the genital tract of HIV-infected women although these do not provide protection against genital HIV shedding. Because polyfunctional HIV-specific T cells have been implicated in better HIV control than those with a single function, this study aimed to investigate whether polyfunctional T cells were present at the female genital mucosa. Cervical cytobrush-derived T cells were obtained from chronically HIV-infected women and compared with blood. CD3(+) T cells from both compartments were expanded with Dynal anti-CD3/CD28 expander beads for 14 days and flow cytometry was used to evaluate four T-cell functions (CD107a, IFN-γ, tumour necrosis factor-α and macrophage inflammatory protein-1β) from 16 women. The majority of Gag-specific T-cell responses in the female genital tract were monofunctional, although low frequencies of HIV Gag-specific polyfunctional CD8(+) T cells were detected at the cervix in 81·3% (13/16) of women. The ability of CD8(+) T cells at both the cervix and in blood to express CD107a and to exhibit polyfunctional responses (two or more functions) following Gag stimulation was inversely associated with plasma viral load and positively associated with blood CD4 counts, suggesting that clinical status impacted on the functionality of HIV-specific T cells at the mucosa, in a similar way to blood. HIV Gag-specific cervical T cells were largely monofunctional. Polyfunctional T cells were detected at the cervix in women with high blood CD4 count and low plasma viral load but these did not protect from HIV genital shedding.
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Affiliation(s)
- Alfred Bere
- Division of Medical Virology, Faculty of Health Sciences, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
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Saidi H, Jenabian MA, Belec L. Understanding factors that modulate HIV infection at the female genital tract mucosae for the rationale design of microbicides. AIDS Res Hum Retroviruses 2012; 28:1485-97. [PMID: 22867060 DOI: 10.1089/aid.2012.0049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Women are now becoming the pivot of the epidemiological spread of HIV infection worldwide, especially in developing countries. Therefore, research to develop an efficient microbicide is now a priority for the prevention of HIV-1 acquisition in exposed women. However, recent disappointing failures in microbicide clinical trials revealed major gaps in basic and applied knowledge that hinder the development of effective microbicide formulations. Indeed, the inhibitory power of microbicide molecules may be affected by several physiological and immunological factors present in male and female genital tracts. Furthermore, mucosal crossing of HIV-1 to increase the ability to reach the submucosal target cells (macrophages, lymphocytes, and dendritic cells) may be modulated by supraepithelial factors such as seminal complement components (opsonized HIV-1), by epithelial factors released in the submucosal microenvironment such as antimicrobial soluble factors, cytokines, and chemokines, and by potent intraepithelial and submucosal innate immunity. The design of vaginal microbicide formulations should take into account an understanding of the intimate mechanisms involved in the crossing of HIV through the female genital mucosae, in the context of a mixture of both male and female genital fluids.
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Affiliation(s)
- Hela Saidi
- Division of Immuno-Virology, Institute of Emerging Diseases and Innovative Therapies, Commissariat à l'Energie Atomique, Fontenay-aux-Roses, France
| | - Mohammad-Ali Jenabian
- Chronic Viral Illnesses Service of the McGill University Health Centre, and Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Laurent Belec
- Assistance Publique–Hôpitaux de Paris, Hôpital Européen Georges Pompidou, Laboratoire de Virologie, and Faculté de Médecine Paris Descartes, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
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Mlisana K, Naicker N, Werner L, Roberts L, van Loggerenberg F, Baxter C, Passmore JAS, Grobler AC, Sturm AW, Williamson C, Ronacher K, Walzl G, Abdool Karim SS. Symptomatic vaginal discharge is a poor predictor of sexually transmitted infections and genital tract inflammation in high-risk women in South Africa. J Infect Dis 2012; 206:6-14. [PMID: 22517910 DOI: 10.1093/infdis/jis298] [Citation(s) in RCA: 146] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Diagnosis and treatment of sexually transmitted infections (STIs) is a public health priority, particularly in regions where the incidence of human immunodeficiency virus (HIV) infection is high. In most developing countries, STIs are managed syndromically. We assessed the adequacy of syndromic diagnosis of STIs, compared with laboratory diagnosis of STIs, and evaluated the association between STI diagnosis and the risk of HIV acquisition in a cohort of high-risk women. METHODS HIV-uninfected high-risk women (n = 242) were followed for 24 months. Symptoms of STIs were recorded, and laboratory diagnosis of common STI pathogens was conducted every 6 months. Forty-two cytokines were measured by Luminex in cervicovaginal lavage specimens at enrollment. Human immunodeficiency virus type 1 (HIV-1) infection was evaluated monthly. RESULTS Only 12.3% of women (25 of 204) who had a laboratory-diagnosed, discharge-causing STI had clinically evident discharge. Vaginal discharge was thus a poor predictor of laboratory-diagnosed STIs (sensitivity, 12.3%; specificity, 93.8%). Cervicovaginal cytokine concentrations did not differ between women with asymptomatic STIs and those with symptomatic STIs and were elevated in women with asymptomatic STIs, compared with women with no STIs or bacterial vaginosis. Although laboratory-diagnosed STIs were associated with increased risk of HIV infection (hazard ratio, 3.3 [95% confidence interval, 1.5-7.2)], clinical symptoms were not. CONCLUSIONS Syndromic STI diagnosis dependent on vaginal discharge was poorly predictive of laboratory-diagnosed STI. Laboratory-diagnosed STIs were associated with increased susceptibility to HIV acquisition, while vaginal discharge was not.
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Affiliation(s)
- Koleka Mlisana
- Centre for the AIDS Programme of Research, South Africa.
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Roberts L, Liebenberg L, Barnabas S, Passmore JA. Vaginal microbicides to prevent human immunodeficiency virus infection in women: perspectives on the female genital tract, sexual maturity and mucosal inflammation. Best Pract Res Clin Obstet Gynaecol 2012; 26:441-9. [PMID: 22429786 DOI: 10.1016/j.bpobgyn.2012.02.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2012] [Accepted: 02/23/2012] [Indexed: 11/29/2022]
Abstract
Topically applied vaginal microbicides to protect against human immunodeficiency (HIV) virus infection offer an important female-controlled prevention strategy. Microbicides have been in development for more than 2 decades, and have included various agents that disrupt cellular and microbial membranes (surfactants), restore the natural acidic protective pH of the vagina (acid buffers), and those that interfere with interactions between HIV envelope proteins and cellular receptors (anionic polymers). Although none of these candidate microbicides have shown significant protection against HIV in clinical trials, a topical gel, including the antiretroviral drug tenofovir (TFV) 1% was the first microbicide to be tested to show some protection against HIV infection. This review explores the effect of female genital tract biology and anatomy, mucosal inflammation, and age on the effectiveness of microbicides to prevent HIV infection.
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Affiliation(s)
- Lindi Roberts
- Division of Medical Virology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Observatory, Cape Town, South Africa
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Roberts L, Passmore JAS, Mlisana K, Williamson C, Little F, Bebell LM, Walzl G, Abrahams MR, Woodman Z, Abdool Karim Q, Abdool Karim SS. Genital tract inflammation during early HIV-1 infection predicts higher plasma viral load set point in women. J Infect Dis 2012; 205:194-203. [PMID: 22190580 DOI: 10.1093/infdis/jir715] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The biggest challenge in human immunodeficiency virus type 1 (HIV-1) prevention in Africa is the high HIV-1 burden in young women. In macaques, proinflammatory cytokine production in the genital tract is necessary for target cell recruitment and establishment of simian immunodeficiency virus (SIV) infection following vaginal inoculation. The purpose of this study was to assess if genital inflammation during early HIV-1 infection predisposes women to rapid disease progression. METHODS Inflammatory cytokine concentrations were measured in cervicovaginal lavage (CVL) from 49 women 6, 17, 30, and 55 weeks after HIV-1 infection and from 22 of these women before infection. Associations between genital inflammation and viral load set point and blood CD4 cell counts 12 months after infection were investigated. RESULTS Elevated genital cytokine concentrations 6 and 17 weeks after HIV-1 infection were associated with higher viral load set points and, to a lesser extent, with CD4 depletion. CVL cytokine concentrations during early infection did not differ relative to preinfection but were elevated in women who had vaginal discharge, detectable HIV-1 RNA in their genital tracts, and lower blood CD4 counts. CONCLUSION Genital inflammation during early HIV-1 infection was associated with higher viral load set point and CD4 depletion, which are markers of rapid disease progression. Strategies aimed at reducing genital inflammation during early HIV-1 infection may slow disease progression.
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Affiliation(s)
- Lindi Roberts
- Institute of Infectious Diseases and Molecular Medicine, University of Cape Town Medical School, Observatory, 7925 Cape Town, South Africa
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CD4 T cell depletion at the cervix during HIV infection is associated with accumulation of terminally differentiated T cells. J Virol 2011; 85:13333-41. [PMID: 21994461 DOI: 10.1128/jvi.05671-11] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
In blood, the accumulation of terminally differentiated (TD) T cells during HIV infection is associated with CD4 T cell loss and HIV disease progression. Here, we investigated the maintenance and functional characteristics of memory T cells at the cervix. We found that CD4 T cell depletion at the cervix mirrors CD4 depletion in blood. In all women, depletion of CD4 T cells at the cervix was associated with significant reductions in CD45RA- CCR7+ (central memory [CM]) T cells and the accumulation of CD45RA+ CCR7- (TD T cells). We determined whether inflammation in the genital tract was associated with the local differentiation of T cells at the cervix. In uninfected women, genital tract inflammation was associated with the accumulation of CD45RA- CCR7+ CM CD4 T cells and reduced frequencies of CD45RA+ CCR7- TD cells at the cervix. This finding may reflect the fact that, in the absence of HIV infection, TD T cells may be slowly lost in the presence of genital inflammation, while CD45RA- CCR7+ CM T cells are recruited to replenish the diminishing CD4 T cell pool. Following global stimulation with phorbol myristate acetate (PMA)-ionomycin, we noted a significant interleukin 2 (IL-2) deficit in both cervical and blood CD4 T cells from HIV-infected women compared to uninfected women, while gamma interferon (IFN-γ) production was similar, irrespective of HIV status. Few HIV-infected women had detectable IFN-γ and IL-2 HIV-specific T cell responses at the cervix, and these responses were significantly lower in magnitude than the corresponding responses in blood. These data suggest that CD4 depletion was associated with the accumulation of terminally differentiated T cell phenotypes at the cervical mucosa defective in their ability to produce IL-2. CD4 depletion and compromised immunity at the cervix may be accompanied by progressive decline of central memory-like T cells and development of T cells toward terminally differentiated phenotypes.
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