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Vartak R, Patki M, Menon S, Jablonski J, Mediouni S, Fu Y, Valente ST, Billack B, Patel K. β-cyclodextrin polymer/Soluplus® encapsulated Ebselen ternary complex (EβpolySol) as a potential therapy for vaginal candidiasis and pre-exposure prophylactic for HIV. Int J Pharm 2020; 589:119863. [DOI: 10.1016/j.ijpharm.2020.119863] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/02/2020] [Accepted: 09/03/2020] [Indexed: 01/10/2023]
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Shey MS, Balfour A, Wilkinson KA, Meintjes G. Contribution of APCs to mucosal-associated invariant T cell activation in infectious disease and cancer. Innate Immun 2018; 24:192-202. [PMID: 29631470 PMCID: PMC6139754 DOI: 10.1177/1753425918768695] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
APCs such as monocytes and dendritic cells are among the first cells to recognize
invading pathogens and initiate an immune response. The innate response can
either eliminate the pathogen directly, or through presentation of Ags to T
cells, which can help to clear the infection. Mucosal-associated invariant T
(MAIT) cells are among the unconventional T cells whose activation does not
involve the classical co-stimulation during Ag presentation. MAIT cells can be
activated either via presentation of unconventional Ags (such as riboflavin
metabolites) through the evolutionarily conserved major histocompatibility class
I-like molecule, MR1, or directly by cytokines such as IL-12 and IL-18. Given
that APCs produce cytokines and can express MR1, these cells can play an
important role in both pathways of MAIT cell activation. In this review, we
summarize evidence on the role of APCs in MAIT cell activation in infectious
disease and cancer. A better understanding of the interactions between APCs and
MAIT cells is important in further elucidating the role of MAIT cells in
infectious diseases, which may facilitate the design of novel interventions such
as vaccines.
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Affiliation(s)
- Muki Shehu Shey
- 1 Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Observatory 7925, South Africa.,2 Department of Medicine, Faculty of Health Sciences University of Cape Town, Observatory 7925, South Africa
| | - Avuyonke Balfour
- 1 Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Observatory 7925, South Africa.,2 Department of Medicine, Faculty of Health Sciences University of Cape Town, Observatory 7925, South Africa
| | - Katalin Andrea Wilkinson
- 1 Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Observatory 7925, South Africa.,2 Department of Medicine, Faculty of Health Sciences University of Cape Town, Observatory 7925, South Africa.,3 The Francis Crick Institute, Midland Road, London, NW1 2AT
| | - Graeme Meintjes
- 1 Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Observatory 7925, South Africa.,2 Department of Medicine, Faculty of Health Sciences University of Cape Town, Observatory 7925, South Africa
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Aravantinou M, Frank I, Hallor M, Singer R, Tharinger H, Kenney J, Gettie A, Grasperge B, Blanchard J, Salazar A, Piatak M, Lifson JD, Robbiani M, Derby N. PolyICLC Exerts Pro- and Anti-HIV Effects on the DC-T Cell Milieu In Vitro and In Vivo. PLoS One 2016; 11:e0161730. [PMID: 27603520 PMCID: PMC5014349 DOI: 10.1371/journal.pone.0161730] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 07/14/2016] [Indexed: 12/24/2022] Open
Abstract
Myeloid dendritic cells (mDCs) contribute to both HIV pathogenesis and elicitation of antiviral immunity. Understanding how mDC responses to stimuli shape HIV infection outcomes will inform HIV prevention and treatment strategies. The long double-stranded RNA (dsRNA) viral mimic, polyinosinic polycytidylic acid (polyIC, PIC) potently stimulates DCs to focus Th1 responses, triggers direct antiviral activity in vitro, and boosts anti-HIV responses in vivo. Stabilized polyICLC (PICLC) is being developed for vaccine adjuvant applications in humans, making it critical to understand how mDC sensing of PICLC influences HIV infection. Using the monocyte-derived DC (moDC) model, we sought to describe how PICLC (vs. other dsRNAs) impacts HIV infection within DCs and DC-T cell mixtures. We extended this work to in vivo macaque rectal transmission studies by administering PICLC with or before rectal SIVmac239 (SIVwt) or SIVmac239ΔNef (SIVΔNef) challenge. Like PIC, PICLC activated DCs and T cells, increased expression of α4β7 and CD169, and induced type I IFN responses in vitro. The type of dsRNA and timing of dsRNA exposure differentially impacted in vitro DC-driven HIV infection. Rectal PICLC treatment similarly induced DC and T cell activation and pro- and anti-HIV factors locally and systemically. Importantly, this did not enhance SIV transmission in vivo. Instead, SIV acquisition was marginally reduced after a single high dose challenge. Interestingly, in the PICLC-treated, SIVΔNef-infected animals, SIVΔNef viremia was higher, in line with the importance of DC and T cell activation in SIVΔNef replication. In the right combination anti-HIV strategy, PICLC has the potential to limit HIV infection and boost HIV immunity.
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Affiliation(s)
- Meropi Aravantinou
- Center for Biomedical Research, Population Council, New York, NY, United States of America
| | - Ines Frank
- Center for Biomedical Research, Population Council, New York, NY, United States of America
| | - Magnus Hallor
- Center for Biomedical Research, Population Council, New York, NY, United States of America
- Linköping University, Linköping, Sweden
| | - Rachel Singer
- Center for Biomedical Research, Population Council, New York, NY, United States of America
| | - Hugo Tharinger
- Center for Biomedical Research, Population Council, New York, NY, United States of America
| | - Jessica Kenney
- Center for Biomedical Research, Population Council, New York, NY, United States of America
| | - Agegnehu Gettie
- Aaron Diamond AIDS Research Center, Rockefeller University, New York, NY, United States of America
| | - Brooke Grasperge
- Tulane National Primate Research Center, Tulane University Health Sciences Center, Covington, LA, United States of America
| | - James Blanchard
- Tulane National Primate Research Center, Tulane University Health Sciences Center, Covington, LA, United States of America
| | | | - Michael Piatak
- AIDS and Cancer Virus Program, Leidos Biomedical Research, Inc., Frederick National Laboratory, Frederick, MD, United States of America
| | - Jeffrey D. Lifson
- AIDS and Cancer Virus Program, Leidos Biomedical Research, Inc., Frederick National Laboratory, Frederick, MD, United States of America
| | - Melissa Robbiani
- Center for Biomedical Research, Population Council, New York, NY, United States of America
| | - Nina Derby
- Center for Biomedical Research, Population Council, New York, NY, United States of America
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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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Doncel GF, Anderson S, Zalenskaya I. Role of Semen in Modulating the Female Genital Tract Microenvironment – Implications for HIV Transmission. Am J Reprod Immunol 2014; 71:564-74. [DOI: 10.1111/aji.12231] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 02/19/2014] [Indexed: 02/03/2023] Open
Affiliation(s)
- Gustavo F. Doncel
- Department of Obstetrics and Gynecology CONRAD Eastern Virginia Medical School Norfolk VA USA
| | - Sharon Anderson
- Department of Obstetrics and Gynecology CONRAD Eastern Virginia Medical School Norfolk VA USA
| | - Irina Zalenskaya
- Department of Obstetrics and Gynecology CONRAD Eastern Virginia Medical School Norfolk VA USA
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