1
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Carvelli L, Hermo L, O’Flaherty C, Oko R, Pshezhetsky AV, Morales CR. Effects of Heparan sulfate acetyl-CoA: Alpha-glucosaminide N-acetyltransferase (HGSNAT) inactivation on the structure and function of epithelial and immune cells of the testis and epididymis and sperm parameters in adult mice. PLoS One 2023; 18:e0292157. [PMID: 37756356 PMCID: PMC10529547 DOI: 10.1371/journal.pone.0292157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Heparan sulfate (HS), an abundant component of the apical cell surface and basement membrane, belongs to the glycosaminoglycan family of carbohydrates covalently linked to proteins called heparan sulfate proteoglycans. After endocytosis, HS is degraded in the lysosome by several enzymes, including heparan-alpha-glucosaminide N-acetyltransferase (HGSNAT), and in its absence causes Mucopolysaccharidosis III type C (Sanfilippo type C). Since endocytosis occurs in epithelial cells of the testis and epididymis, we examined the morphological effects of Hgsnat inactivation in these organs. In the testis, Hgsnat knockout (Hgsnat-Geo) mice revealed statistically significant decrease in tubule and epithelial profile area of seminiferous tubules. Electron microscopy (EM) analysis revealed cross-sectional tubule profiles with normal and moderately to severely altered appearances. Abnormalities in Sertoli cells and blood-testis barrier and the absence of germ cells in some tubules were noted along with altered morphology of sperm, sperm motility parameters and a reduction in fertilization rates in vitro. Along with quantitatively increased epithelial and tubular profile areas in the epididymis, EM demonstrated significant accumulations of electrolucent lysosomes in the caput-cauda regions that were reactive for cathepsin D and prosaposin antibodies. Lysosomes with similar storage materials were also found in basal, clear and myoid cells. In the mid/basal region of the epithelium of caput-cauda regions of KO mice, large vacuolated cells, unreactive for cytokeratin 5, a basal cell marker, were identified morphologically as epididymal mononuclear phagocytes (eMPs). The cytoplasm of the eMPs was occupied by a gigantic lysosome suggesting an active role of these cells in removing debris from the epithelium. Some eMPs were found in proximity to T-lymphocytes, a feature of dendritic cells. Taken together, our results reveal that upon Hgsnat inactivation, morphological alterations occur to the testis affecting sperm morphology and motility parameters and abnormal lysosomes in epididymal epithelial cells, indicative of a lysosomal storage disease.
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Affiliation(s)
- Lorena Carvelli
- IHEM-CONICET, Universidad Nacional de Cuyo, Mendoza, Argentina
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Mendoza, Argentina
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
| | - Louis Hermo
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
| | - Cristian O’Flaherty
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
- Department of Surgery (Urology Division), McGill University, Montréal, Quebec, Canada
- Department of Pharmacology and Therapeutics, McGill University, Montréal, Canada
| | - Richard Oko
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, Canada
| | - Alexey V. Pshezhetsky
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
- Sainte-Justine University Hospital Research Center, University of Montreal, Montreal, Quebec, Canada
| | - Carlos R. Morales
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
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2
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Gao L, Jiao YM, Ma P, Sun L, Zhao H, Guo AL, Fan X, Zhang C, Song JW, Zhang JY, Lu F, Wang FS. Characterization and distribution of HIV-infected cells in semen. Emerg Microbes Infect 2022; 11:860-872. [PMID: 35253610 PMCID: PMC8942556 DOI: 10.1080/22221751.2022.2049982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Semen is a known vector for both human immunodeficiency virus (HIV) infection and transmission. However, the distribution and characteristics of HIV-infected cells in semen remain unclear. Investigating the possibility of transmission through the spermatozoon in semen is of great clinical significance to improve the strategies for exposure prevention and assisted reproduction for HIV-infected partners. Twenty-six HIV-infected patients, including twelve treatment-naïve (TN) patients and fourteen antiretroviral treated (ART) patients, were enrolled in this study. HIV p24 protein in spermatozoa was detected using imaging flow cytometry and immunohistochemistry, and HIV RNA was identified using next-generation RNAscope in situ hybridization. Additionally, we described the rates of HIV-positive spermatozoon and CD4+ T lymphocytes in semen, and found that p24+ spermatozoon were mainly CD4 negative regardless of whether the patients received ART. Of note, p24-positive cells in semen are predominantly spermatozoa, and we confirmed that motile spermatozoa carried HIV into peripheral blood mononuclear cells of healthy men in vitro. Our findings provide evidence regarding the risk of HIV-infected spermatozoa.
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Affiliation(s)
- Lin Gao
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Science, Peking University Health Science Center, Beijing, People's Republic of China.,Senior Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, People's Republic of China.,Peking University 302 Clinical Medical School, Beijing, People's Republic of China
| | - Yan-Mei Jiao
- Senior Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, People's Republic of China
| | - Ping Ma
- Nankai University Second People's Hospital, School of Medicine, Nankai University, Tianjin, People's Republic of China
| | - Lijun Sun
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Hongxin Zhao
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - An-Liang Guo
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Science, Peking University Health Science Center, Beijing, People's Republic of China.,Department of Immunology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | - Xing Fan
- Senior Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, People's Republic of China
| | - Chao Zhang
- Senior Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, People's Republic of China
| | - Jin-Wen Song
- Senior Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, People's Republic of China
| | - Ji-Yuan Zhang
- Senior Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, People's Republic of China
| | - Fengmin Lu
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Science, Peking University Health Science Center, Beijing, People's Republic of China
| | - Fu-Sheng Wang
- Department of Microbiology & Infectious Disease Center, School of Basic Medical Science, Peking University Health Science Center, Beijing, People's Republic of China.,Senior Department of Infectious Diseases, The Fifth Medical Center of Chinese PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, People's Republic of China.,Peking University 302 Clinical Medical School, Beijing, People's Republic of China.,Department of Immunology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
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3
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Wang F, Zhang J, Wang Y, Chen Y, Han D. Viral tropism for the testis and sexual transmission. Front Immunol 2022; 13:1040172. [PMID: 36439102 PMCID: PMC9682072 DOI: 10.3389/fimmu.2022.1040172] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 10/24/2022] [Indexed: 10/17/2023] Open
Abstract
The mammalian testis adopts an immune privileged environment to protect male germ cells from adverse autoimmune reaction. The testicular immune privileged status can be also hijacked by various microbial pathogens as a sanctuary to escape systemic immune surveillance. In particular, several viruses have a tropism for the testis. To overcome the immune privileged status and mount an effective local defense against invading viruses, testicular cells are well equipped with innate antiviral machinery. However, several viruses may persist an elongated duration in the testis and disrupt the local immune homeostasis, thereby impairing testicular functions and male fertility. Moreover, the viruses in the testis, as well as other organs of the male reproductive system, can shed to the semen, thus allowing sexual transmission to partners. Viral infection in the testis, which can impair male fertility and lead to sexual transmission, is a serious concern in research on known and on new emerging viruses. To provide references for our scientific peers, this article reviews research achievements and suggests future research focuses in the field.
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Affiliation(s)
| | | | | | - Yongmei Chen
- Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - Daishu Han
- Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, Beijing, China
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4
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Immune homeostasis and disorder in the testis —roles of Sertoli cells. J Reprod Immunol 2022; 152:103625. [DOI: 10.1016/j.jri.2022.103625] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 01/05/2022] [Accepted: 04/13/2022] [Indexed: 01/19/2023]
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5
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Carbone L, Conforti A, La Marca A, Cariati F, Vallone R, Raffone A, Buonfantino C, Palese M, Mascia M, DI Girolamo R, Capuzzo M, Esteves SC, Alviggi C. The negative impact of most relevant infections on fertility and assisted reproduction technology. Minerva Obstet Gynecol 2022; 74:83-106. [PMID: 34137567 DOI: 10.23736/s2724-606x.21.04870-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Infections may act with variable impact on the physiopathology of the reproductive organs, determining infertility or reducing the outcomes of assisted reproduction technology. The aim of this narrative review is to describe the existing evidence regarding the pathogens with a supposed or recognized role in reproductive medicine. Viral hepatitis, as well as HIV, can reduce sperm quality. Syphilis carries a risk of erectile dysfunction and increased endometrial thickness. Chlamydia is the main cause of pelvic inflammatory disease. In relation to Mycoplasma and Ureaplasma spp., only few species seem to show a correlation with infertility and poor in-vitro fertilization outcomes. There is evidence of a role for bacterial vaginosis in early pregnancy loss. HPV infection in males seems to determine infertility. Herpesviruses are more a risk for fetuses than for fertility itself. Zika virus is responsible for altered early embryo development and waiting to conceive is recommended in suspected or confirmed cases. The impact of SARS-CoV-2 is yet to be elucidated. Rubella and toxoplasmosis can provoke important congenital defects and therefore screening is mandatory before conception; a vaccine for Rubella is recommended. Further and well-designed studies are still needed to better elucidate the role of some infectious agents, to improve fertility and its treatments.
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Affiliation(s)
- Luigi Carbone
- Department of Neuroscience, Reproductive Sciences and Odontostomatology, University of Naples Federico II, Naples, Italy -
| | - Alessandro Conforti
- Department of Neuroscience, Reproductive Sciences and Odontostomatology, University of Naples Federico II, Naples, Italy
| | - Antonio La Marca
- Department of Medical and Surgical Sciences for Children and Adults, University of Modena and Reggio Emilia, Modena, Italy
| | | | - Roberta Vallone
- Department of Neuroscience, Reproductive Sciences and Odontostomatology, University of Naples Federico II, Naples, Italy
| | - Antonio Raffone
- Department of Neuroscience, Reproductive Sciences and Odontostomatology, University of Naples Federico II, Naples, Italy
| | - Cira Buonfantino
- Department of Public Health, University of Naples Federico II, Naples, Italy
| | - Michela Palese
- Department of Neuroscience, Reproductive Sciences and Odontostomatology, University of Naples Federico II, Naples, Italy
| | - Marika Mascia
- Department of Neuroscience, Reproductive Sciences and Odontostomatology, University of Naples Federico II, Naples, Italy
| | - Raffaella DI Girolamo
- Center for High-Risk Pregnancy and Fetal Care, Department of Obstetrics and Gynecology, University of Chieti, Chieti, Italy
| | - Martina Capuzzo
- Department of Medical and Surgical Sciences for Children and Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Sandro C Esteves
- Division of Urology, Department of Surgery, University of Campinas (UNICAMP), Campinas, Brazil
- Faculty of Health, Aarhus University, Aarhus, Denmark
- ANDROFERT - Andrology and Human Reproduction Clinic, Campinas, Brazil
| | - Carlo Alviggi
- Department of Neuroscience, Reproductive Sciences and Odontostomatology, University of Naples Federico II, Naples, Italy
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6
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Ribeiro JC, Braga PC, Martins AD, Silva BM, Alves MG, Oliveira PF. Antioxidants Present in Reproductive Tract Fluids and Their Relevance for Fertility. Antioxidants (Basel) 2021; 10:antiox10091441. [PMID: 34573073 PMCID: PMC8466935 DOI: 10.3390/antiox10091441] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/27/2021] [Accepted: 09/05/2021] [Indexed: 12/14/2022] Open
Abstract
Nowadays, infertility is classified as a disease of the reproductive system. Although it does not compromise the life of the individual, it can have detrimental effects on the physiological and psychological health of the couple. Male fertility evaluation is mainly focused on the analysis of sperm parameters. However, the ejaculated fluid is also composed of seminal plasma, and the study of this fluid can provide crucial information to help in the assessment of male fertility status. Total antioxidant capacity of the seminal plasma has been positively correlated with the fertility of men. Moreover, evidence highlights to a similar importance as that of female reproductive tract fluid antioxidant capabilities and female fertility. Herein, we describe the functions of seminal plasma and female reproductive tract fluids, as well as their main antioxidant components and their relationships with fertility outcomes. Additionally, this review contains the most up to date information regarding the mechanisms of the interaction between the male and the female reproductive fluids and the importance of proper antioxidant capacity for fertilization.
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Affiliation(s)
- João C. Ribeiro
- Department of Anatomy, Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal; (J.C.R.); (P.C.B.); (M.G.A.)
- QOPNA & LAQV, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Patrícia C. Braga
- Department of Anatomy, Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal; (J.C.R.); (P.C.B.); (M.G.A.)
| | - Ana D. Martins
- QOPNA & LAQV, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Branca M. Silva
- CICS, Faculty of Health Sciences, University of Beira Interior, 6201-001 Covilhã, Portugal;
| | - Marco G. Alves
- Department of Anatomy, Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal; (J.C.R.); (P.C.B.); (M.G.A.)
| | - Pedro F. Oliveira
- QOPNA & LAQV, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
- Correspondence: ; Tel.: +351-234370718
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7
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Varese A, Dantas E, Paletta A, Fitzgerald W, Di Diego García F, Cabrerizo G, Erra Diaz F, Defelipe LA, Pallares H, Dodes Traian M, Gamarnik A, Geffner J, Remes Lenicov F, Margolis L, Ceballos A. Extracellular acidosis enhances Zika virus infection both in human cells and ex-vivo tissue cultures from female reproductive tract. Emerg Microbes Infect 2021; 10:1169-1179. [PMID: 34013833 PMCID: PMC8205022 DOI: 10.1080/22221751.2021.1932606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Zika virus (ZIKV) is a flavivirus transmitted by mosquitoes of the genus Aedes, but unlike other flaviviruses, ZIKV can be sexually transmitted by vaginal intercourse. The healthy vaginal pH ranges from 4.0 to 6.0, reaching values of 6.0-7.0 after semen deposition. Here, we report that low extracellular pH values (range 6.2-6.6) dramatically increase ZIKV infection on cell lines of different origin including some derived from the female genital tract and monocyte-derived macrophages. Furthermore, low pH significantly increased ZIKV infection of human ectocervix and endocervix cultured ex-vivo. Enhancement of infection by low pH was also observed using different ZIKV strains and distinct methods to evaluate viral infection, i.e. plaque assays, RT-PCR, flow cytometry, and fluorescence microscopy. Analysis of the mechanisms involved revealed that the enhancement of ZIKV infection induced by low pH was associated with increased binding of the viral particles to the heparan sulphate expressed on the target cell surface. Acidosis represents a critical but generally overlooked feature of the female genital tract, with major implications for sexual transmission diseases. Our results suggest that low vaginal pH might promote male-to-female transmission of ZIKV infection.
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Affiliation(s)
- A Varese
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina
| | - E Dantas
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina
| | - A Paletta
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina
| | - W Fitzgerald
- Section on Intercellular Interaction, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - F Di Diego García
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina
| | - G Cabrerizo
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina
| | - F Erra Diaz
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina
| | - L A Defelipe
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, IQUIBICEN-CONICET, Ciudad de Buenos Aires, Argentina
| | - H Pallares
- Fundación Instituto Leloir-CONICET, Buenos Aires, Argentina
| | - M Dodes Traian
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, IQUIBICEN-CONICET, Ciudad de Buenos Aires, Argentina
| | - A Gamarnik
- Fundación Instituto Leloir-CONICET, Buenos Aires, Argentina
| | - J Geffner
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina
| | - F Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina
| | - L Margolis
- Section on Intercellular Interaction, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - A Ceballos
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de Buenos Aires, Argentina
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8
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Karampoor S, Zahednasab H, Farahmand M, Mirzaei R, Zamani F, Tabibzadeh A, Bouzari B, Ajdarkosh H, Nikkhah M, Hashemi MR, Laali A, Keyvani H. A possible pathogenic role of Syndecan-1 in the pathogenesis of coronavirus disease 2019 (COVID-19). Int Immunopharmacol 2021; 97:107684. [PMID: 33932696 PMCID: PMC8052477 DOI: 10.1016/j.intimp.2021.107684] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/13/2021] [Accepted: 04/13/2021] [Indexed: 02/08/2023]
Abstract
A cell-surface heparan proteoglycan called Syndecan-1 (SDC-1) has multiple roles in healthy and pathogenic conditions, including respiratory viral infection. In this study, we explore the dynamic alternation in the levels of SDC-1 in cases with COVID-19. A total of 120 cases definitely diagnosed with COVID-19 were admitted to the Firoozgar Hospital, Tehran, Iran, from December 1, 2020, to January 29, 2021, and included in our study. Also, 58 healthy subjects (HS) were chosen as the control group. Patients were classified into two groups: 1) ICU patients and (63 cases) 2) non-ICU patients (57 cases). The dynamic changes of serum SCD-1, CRP, IL-6, IL-10, IL-18, and Vit D levels a well as the disease activity were investigated in three-time points (T1-T3). Our results indicated that the COVID-19 patients had significantly increased SCD-1, CRP, IL-6, IL-10, and IL-18 levels than in HS, while the Vit D levels in COVID-19 patients were significantly lower than HS. Further analysis demonstrated that the SCD-1, CRP, IL-6, IL-10, and IL-18 levels in ICU patients were significantly higher than in non-ICU patients. Tracking dynamic changes in the above markers indicated that on the day of admission, the SCD-1, CRP, IL-6, IL-10, and IL-18 levels were gradually increased on day 5 (T2) and then gradually decreased on day 10 (T3). ROC curve analysis suggests that markers mentioned above, SDC-1, IL-6, and IL-18 are valuable indicators in evaluating the activity of COVID-19. All in all, it seems that the serum SDC-1 levels alone or combined with other markers might be a good candidate for disease activity monitoring.
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Affiliation(s)
- Sajad Karampoor
- Gastrointestinal and Liver Diseases Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Virology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Hamid Zahednasab
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Mohammad Farahmand
- Department of Medical Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Rasoul Mirzaei
- Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Farhad Zamani
- Gastrointestinal and Liver Diseases Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Alireza Tabibzadeh
- Department of Virology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Behnaz Bouzari
- Department of Pathology, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Hossein Ajdarkosh
- Gastrointestinal and Liver Diseases Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mehdi Nikkhah
- Gastrointestinal and Liver Diseases Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Melika Razavi Hashemi
- Department of Pathology, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Azadeh Laali
- Department of Infectious Disease, School of Medicine, Firoozgar General Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Hossein Keyvani
- Gastrointestinal and Liver Diseases Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Virology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
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9
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Teixeira TA, Oliveira YC, Bernardes FS, Kallas EG, Duarte-Neto AN, Esteves SC, Drevet JR, Hallak J. Viral infections and implications for male reproductive health. Asian J Androl 2021; 23:335-347. [PMID: 33473014 PMCID: PMC8269834 DOI: 10.4103/aja.aja_82_20] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Viral infections have haunted humankind since times immemorial. Overpopulation, globalization, and extensive deforestation have created an ideal environment for a viral spread with unknown and multiple shedding routes. Many viruses can infect the male reproductive tract, with potential adverse consequences to male reproductive health, including infertility and cancer. Moreover, some genital tract viral infections can be sexually transmitted, potentially impacting the resulting offspring's health. We have summarized the evidence concerning the presence and adverse effects of the relevant viruses on the reproductive tract (mumps virus, human immunodeficiency virus, herpes virus, human papillomavirus, hepatitis B and C viruses, Ebola virus, Zika virus, influenza virus, and coronaviruses), their routes of infection, target organs and cells, prevalence and pattern of virus shedding in semen, as well as diagnosis/testing and treatment strategies. The pathophysiological understanding in the male genital tract is essential to assess its clinical impact on male reproductive health and guide future research.
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Affiliation(s)
- Thiago A Teixeira
- Androscience, Science and Innovation Center in Andrology and High-Complex Clinical and Research Andrology Laboratory, São Paulo 04534-011, SP, Brazil.,Division of Urology, University of São Paulo, São Paulo 05403-000, SP, Brazil.,Men's Health Study Group, Institute for Advanced Studies, University of São Paulo, São Paulo 05508-060, SP, Brazil.,Division of Urology, School of Medicine, Federal University of Amapa, Macapa 68903-419, AP, Brazil
| | - Yasmin C Oliveira
- Androscience, Science and Innovation Center in Andrology and High-Complex Clinical and Research Andrology Laboratory, São Paulo 04534-011, SP, Brazil.,Division of Urology, School of Medicine, Federal University of Amapa, Macapa 68903-419, AP, Brazil
| | - Felipe S Bernardes
- Androscience, Science and Innovation Center in Andrology and High-Complex Clinical and Research Andrology Laboratory, São Paulo 04534-011, SP, Brazil.,Division of Urology, University of São Paulo, São Paulo 05403-000, SP, Brazil.,Men's Health Study Group, Institute for Advanced Studies, University of São Paulo, São Paulo 05508-060, SP, Brazil
| | - Esper G Kallas
- Department of Infectious and Parasitic Diseases, University of São Paulo, São Paulo 05403-000, SP, Brazil
| | - Amaro N Duarte-Neto
- BIAS - Brazilian Image Autopsy Study Group, Department of Pathology, University of São Paulo, São Paulo 05403-000, SP, Brazil
| | - Sandro C Esteves
- ANDROFERT, Andrology and Human Reproduction Clinic, Campinas 13075-460, SP, Brazil.,Department of Surgery (Division of Urology), University of Campinas (UNICAMP), Campinas 13083-968, SP, Brazil.,Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus 8000, Denmark
| | - Joël R Drevet
- GReD Institute, CNRS-INSERM-Université Clermont Auvergne, Faculty of Medicine, Clermont-Ferrand 63000, France
| | - Jorge Hallak
- Androscience, Science and Innovation Center in Andrology and High-Complex Clinical and Research Andrology Laboratory, São Paulo 04534-011, SP, Brazil.,Division of Urology, University of São Paulo, São Paulo 05403-000, SP, Brazil.,Men's Health Study Group, Institute for Advanced Studies, University of São Paulo, São Paulo 05508-060, SP, Brazil.,Reproductive Toxicology Unit, Department of Pathology, University of São Paulo, São Paulo 05403-000, SP, Brazil
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10
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Nijmeijer BM, Bermejo-Jambrina M, Kaptein TM, Ribeiro CMS, Wilflingseder D, Geijtenbeek TBH. HIV-1 subverts the complement system in semen to enhance viral transmission. Mucosal Immunol 2021; 14:743-750. [PMID: 33568786 PMCID: PMC8075950 DOI: 10.1038/s41385-021-00376-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 12/13/2020] [Accepted: 01/04/2021] [Indexed: 02/04/2023]
Abstract
Semen is important in determining HIV-1 susceptibility but it is unclear how it affects virus transmission during sexual contact. Mucosal Langerhans cells (LCs) are the first immune cells to encounter HIV-1 during sexual contact and have a barrier function as LCs are restrictive to HIV-1. As semen from people living with HIV-1 contains complement-opsonized HIV-1, we investigated the effect of complement on HIV-1 dissemination by human LCs in vitro and ex vivo. Notably, pre-treatment of HIV-1 with semen enhanced LC infection compared to untreated HIV-1 in the ex vivo explant model. Infection of LCs and transmission to target cells by opsonized HIV-1 was efficiently inhibited by blocking complement receptors CR3 and CR4. Complement opsonization of HIV-1 enhanced uptake, fusion, and integration by LCs leading to an increased transmission of HIV-1 to target cells. However, in the absence of both CR3 and CR4, C-type lectin receptor langerin was able to restrict infection of complement-opsonized HIV-1. These data suggest that complement enhances HIV-1 infection of LCs by binding CR3 and CR4, thereby bypassing langerin and changing the restrictive nature of LCs into virus-disseminating cells. Targeting complement factors might be effective in preventing HIV-1 transmission.
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Affiliation(s)
- Bernadien M. Nijmeijer
- grid.7177.60000000084992262Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands
| | - Marta Bermejo-Jambrina
- grid.7177.60000000084992262Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands ,grid.5361.10000 0000 8853 2677Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Tanja M. Kaptein
- grid.7177.60000000084992262Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands
| | - Carla M. S. Ribeiro
- grid.7177.60000000084992262Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands
| | - Doris Wilflingseder
- grid.5361.10000 0000 8853 2677Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Teunis B. H. Geijtenbeek
- grid.7177.60000000084992262Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands
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11
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Mahé D, Matusali G, Deleage C, Alvarenga RLLS, Satie AP, Pagliuzza A, Mathieu R, Lavoué S, Jégou B, de França LR, Chomont N, Houzet L, Rolland AD, Dejucq-Rainsford N. Potential for Virus Endogenization in Humans through Testicular Germ Cell Infection: the Case of HIV. J Virol 2020; 94:e01145-20. [PMID: 32999017 PMCID: PMC7925188 DOI: 10.1128/jvi.01145-20] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 09/17/2020] [Indexed: 12/11/2022] Open
Abstract
Viruses have colonized the germ line of our ancestors on several occasions during evolution, leading to the integration in the human genome of viral sequences from over 30 retroviral groups and a few nonretroviruses. Among the recently emerged viruses infecting humans, several target the testis (e.g., human immunodeficiency virus [HIV], Zika virus, and Ebola virus). Here, we aimed to investigate whether human testicular germ cells (TGCs) can support integration by HIV, a contemporary retrovirus that started to spread in the human population during the last century. We report that albeit alternative receptors enabled HIV-1 binding to TGCs, HIV virions failed to infect TGCs in vitro Nevertheless, exposure of TGCs to infected lymphocytes, naturally present in the testis from HIV+ men, led to HIV-1 entry, integration, and early protein expression. Similarly, cell-associated infection or bypassing viral entry led to HIV-1 integration in a spermatogonial cell line. Using DNAscope, HIV-1 and simian immunodeficiency virus (SIV) DNA were detected within a few TGCs in the testis from one infected patient, one rhesus macaque, and one African green monkey in vivo Molecular landscape analysis revealed that early TGCs were enriched in HIV early cofactors up to integration and had overall low antiviral defenses compared with testicular macrophages and Sertoli cells. In conclusion, our study reveals that TGCs can support the entry and integration of HIV upon cell-associated infection. This could represent a way for this contemporary virus to integrate into our germ line and become endogenous in the future, as happened during human evolution for a number of viruses.IMPORTANCE Viruses have colonized the host germ line on many occasions during evolution to eventually become endogenous. Here, we aimed at investigating whether human testicular germ cells (TGCs) can support such viral invasion by studying HIV interactions with TGCs in vitro Our results indicate that isolated primary TGCs express alternative HIV-1 receptors, allowing virion binding but not entry. However, HIV-1 entered and integrated into TGCs upon cell-associated infection and produced low levels of viral proteins. In vivo, HIV-1 and SIV DNA was detected in a few TGCs. Molecular landscape analysis showed that TGCs have overall weak antiviral defenses. Altogether, our results indicate that human TGCs can support HIV-1 early replication, including integration, suggesting potential for endogenization in future generations.
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Affiliation(s)
- Dominique Mahé
- Université Rennes, INSERM, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail)-UMR_S1085, Rennes, France
| | - Giulia Matusali
- Université Rennes, INSERM, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail)-UMR_S1085, Rennes, France
| | - Claire Deleage
- Université Rennes, INSERM, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail)-UMR_S1085, Rennes, France
| | - Raquel L L S Alvarenga
- Laboratory of Cellular Biology, Department of Morphology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Anne-Pascale Satie
- Université Rennes, INSERM, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail)-UMR_S1085, Rennes, France
| | - Amélie Pagliuzza
- Department of Microbiology, Infectiology and Immunology, Faculty of Medecine, Université de Montréal, and Centre de Recherche du CHUM, Montréal, Quebec, Canada
| | - Romain Mathieu
- Centre Hospitalier Universitaire de Pontchaillou, Service Urologie, Rennes, France
| | - Sylvain Lavoué
- Centre Hospitalier Universitaire de Pontchaillou, Centre de Coordination des Prélèvements, Rennes, France
| | - Bernard Jégou
- Université Rennes, INSERM, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail)-UMR_S1085, Rennes, France
| | - Luiz R de França
- Laboratory of Cellular Biology, Department of Morphology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Nicolas Chomont
- Department of Microbiology, Infectiology and Immunology, Faculty of Medecine, Université de Montréal, and Centre de Recherche du CHUM, Montréal, Quebec, Canada
| | - Laurent Houzet
- Université Rennes, INSERM, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail)-UMR_S1085, Rennes, France
| | - Antoine D Rolland
- Université Rennes, INSERM, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail)-UMR_S1085, Rennes, France
| | - Nathalie Dejucq-Rainsford
- Université Rennes, INSERM, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail)-UMR_S1085, Rennes, France
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12
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Abstract
Acquired immunodeficiency syndrome (AIDS) was first reported more than 30 years ago among homosexuals in the United States. The epidemiology of this disease indicates that there are three modes of transmission: Blood, mother-to-child, and sexual contact transmission. The pathogen of AIDS is human immunodeficiency virus (HIV), primarily HIV-1. HIV-1 could not break through the structurally and functionally integral skin, and primarily invades the human body through the mucosa irrespective of their integrity. Therefore, the mucosae are the natural transmission routes for HIV-1. The mucosae involved in HIV-1 transmission include the mucosae of the gastrointestinal tract and the urogenital tract. The risks of HIV-1 transmission vary significantly between mucosal sites and individuals, and are associated with mucosal integrity, abundance of target cells, immune status of the host, commensal microbes, and host genetic background. Many factors are closely related to the barrier function of the mucosa, and studies on their roles in HIV-1 invasion could promote the prevention and control of mucosal transmission of HIV-1.
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Affiliation(s)
- Gui-Bo Yang
- National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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13
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De Toni L, Cosci I, Carosso A, Barzon L, Engl B, Foresta C, Garolla A. Hyaluronidase-based swim-up for semen selection in patients with human papillomavirus semen infection. Biol Reprod 2020; 104:211-222. [PMID: 33164043 DOI: 10.1093/biolre/ioaa173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 09/14/2020] [Accepted: 09/18/2020] [Indexed: 12/16/2022] Open
Abstract
Infection by human papillomavirus (HPV) represents one of the most common sexually transmitted diseases in both men and women worldwide. Recently, the detection of HPV virions in the semen of a large percentage of sexually active men has been associated with detrimental effects on both sperm parameters and on assisted reproductive technologies (ART) treatment outcomes. Conventional semen washing procedure used in ART have proved to be ineffective in removing HPV bound to sperm, requiring the identification of more effective and specific methods. In the present study, we assessed the possible use of hyaluronidase for the detachment of HPV from sperm cell surface. Semen samples from five normozoospermic control subjects (CTRL) were incubated with HPV virus-like particles (HPV-VLP) and treated with hyaluronidase by both a modified swim-up procedure (M-SU) and single-cell approach (SCA). The treatment with hyaluronidase was associated with the complete loss of HPV-VLP signal on sperms by both M-SU and SCA. In addition, semen samples from 12 HPV-positive infertile patients were treated with hyaluronidase 80 IU/mL by M-SU, resulting in the complete loss of HPV-DNA signal from sperm surface. Finally, the possible impact of hyaluronidase treatment on sperm parameters was assessed on both sperms from the five CTRL subjects and on further five oligo-astheno-terato-zoospermic (OAT) patients, both HPV negative. The treatment with hyaluronidase was equally associated with a slight reduction of sperm viability and progressive motility in both CTRL and OAT. In conclusion, the treatment with hyaluronidase removed efficiently and safely HPV virions bound to spermatozoa.
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Affiliation(s)
- Luca De Toni
- Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, Padova, Italy
| | - Ilaria Cosci
- Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, Padova, Italy
| | - Andrea Carosso
- Department of Surgical Sciences, Unit of Gynecology and Obstetrics, Section of Physiopathology of Reproduction and IVF, S. Anna Hospital, University of Torino, Torino, Italy
| | - Luisa Barzon
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Bruno Engl
- Physiopathology of Reproduction Unit, Section of Women's Health and Fertility, Donna Salus Center, Bolzano, Italy
| | - Carlo Foresta
- Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, Padova, Italy
| | - Andrea Garolla
- Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, Padova, Italy
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14
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van der Kuyl AC, Berkhout B. Viruses in the reproductive tract: On their way to the germ line? Virus Res 2020; 286:198101. [PMID: 32710926 DOI: 10.1016/j.virusres.2020.198101] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 07/17/2020] [Accepted: 07/18/2020] [Indexed: 01/13/2023]
Abstract
Studies of vertebrate genomes have indicated that all species contain in their chromosomes stretches of DNA with sequence similarity to viral genomes. How such 'endogenous' viral elements (EVEs) ended up in host genomes is usually explained in general terms such as 'they entered the germ line at some point during evolution'. This seems a correct statement, but is also rather imprecise. The vast number of endogenous viral sequences suggest that common routes to the 'germ line' may exist, as relying on chance alone may not easily explain the abundance of EVEs in modern mammalian genomes. An increasing number of virus types have been detected in human semen and a growing number of studies have reported on viral infections that cause male infertility or subfertility and on viral infections that threaten in vitro fertilisation practices. Thus, it is timely to survey the pathway(s) that viruses can use to gain access to the human germ line. Embryo transfer and semen quality studies in livestock form another source of relevant information because virus infection during reproduction is clearly unwanted, as is the case for the human situation. In this review, studies on viruses in the male and female reproductive tract and in the early embryo will be discussed to propose a plausible viral route to the mammalian germ line.
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Affiliation(s)
- Antoinette Cornelia van der Kuyl
- Laboratory of Experimental Virology, Department of Medical Microbiology, Amsterdam University Medical Centers, Amsterdam, The Netherlands.
| | - Ben Berkhout
- Laboratory of Experimental Virology, Department of Medical Microbiology, Amsterdam University Medical Centers, Amsterdam, The Netherlands
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15
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Rickard JP, de Graaf SP. Sperm surface changes and their consequences for sperm transit through the female reproductive tract. Theriogenology 2020; 150:96-105. [PMID: 32067798 DOI: 10.1016/j.theriogenology.2020.02.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 02/08/2020] [Indexed: 12/17/2022]
Abstract
Spermatozoa are faced with considerable challenges during their passage through the female reproductive tract. Following deposition, they must deal with several physical and biochemical barriers as well as an aggressive immune defence system before they reach the site of fertilisation. While many factors are at play, the surface characteristics of spermatozoa are central to communication with the female and successful transit. The surface proteome of spermatozoa has been extensively studied and shown to vary considerably between species that deposit semen in the vagina (ram and bull) and uterus (boar and stallion), likely due to major differences in accessory sex gland anatomy. Comparing the surface characteristics of spermatozoa from these domestic species and how individual components may equip spermatozoa to interact with different features of the female tract could help understand how spermatozoa navigate from vagina or uterus to oviduct ampulla. Furthermore, we can begin to explain why use of high quality preserved spermatozoa in artificial insemination programs may still result in reduced fertility due to altered interaction with the female. In this review, we describe the sperm surface characteristics of the ram, bull, boar and stallion and compare changes as a result of mixture with seminal plasma and/or in vitro processing. The role of these seminal components in facilitating sperm survival and transit within the female reproductive tract is summarised, drawing attention to potential implications for applied reproductive technologies.
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Affiliation(s)
- J P Rickard
- The University of Sydney, Faculty of Science, School of Life and Environmental Sciences, NSW, 2006, Australia.
| | - S P de Graaf
- The University of Sydney, Faculty of Science, School of Life and Environmental Sciences, NSW, 2006, Australia
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16
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Le Tortorec A, Matusali G, Mahé D, Aubry F, Mazaud-Guittot S, Houzet L, Dejucq-Rainsford N. From Ancient to Emerging Infections: The Odyssey of Viruses in the Male Genital Tract. Physiol Rev 2020; 100:1349-1414. [PMID: 32031468 DOI: 10.1152/physrev.00021.2019] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The male genital tract (MGT) is the target of a number of viral infections that can have deleterious consequences at the individual, offspring, and population levels. These consequences include infertility, cancers of male organs, transmission to the embryo/fetal development abnormalities, and sexual dissemination of major viral pathogens such as human immunodeficiency virus (HIV) and hepatitis B virus. Lately, two emerging viruses, Zika and Ebola, have additionally revealed that the human MGT can constitute a reservoir for viruses cleared from peripheral circulation by the immune system, leading to their sexual transmission by cured men. This represents a concern for future epidemics and further underlines the need for a better understanding of the interplay between viruses and the MGT. We review here how viruses, from ancient viruses that integrated the germline during evolution through old viruses (e.g., papillomaviruses originating from Neanderthals) and more modern sexually transmitted infections (e.g., simian zoonotic HIV) to emerging viruses (e.g., Ebola and Zika) take advantage of genital tract colonization for horizontal dissemination, viral persistence, vertical transmission, and endogenization. The MGT immune responses to viruses and the impact of these infections are discussed. We summarize the latest data regarding the sources of viruses in semen and the complex role of this body fluid in sexual transmission. Finally, we introduce key animal findings that are relevant for our understanding of viral infection and persistence in the human MGT and suggest future research directions.
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Affiliation(s)
- Anna Le Tortorec
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Giulia Matusali
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Dominique Mahé
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Florence Aubry
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Séverine Mazaud-Guittot
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Laurent Houzet
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
| | - Nathalie Dejucq-Rainsford
- University of Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S1085, Rennes, France
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17
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Abstract
Seminal fluid is often assumed to have just one function in mammalian reproduction, delivering sperm to fertilize oocytes. But seminal fluid also transmits signaling agents that interact with female reproductive tissues to facilitate conception and .pregnancy. Upon seminal fluid contact, female tissues initiate a controlled inflammatory response that affects several aspects of reproductive function to ultimately maximize the chances of a male producing healthy offspring. This effect is best characterized in mice, where the female response involves several steps. Initially, seminal fluid factors cause leukocytes to infiltrate the female reproductive tract, and to selectively target and eliminate excess sperm. Other signals stimulate ovulation, induce an altered transcriptional program in female tract tissues that modulates embryo developmental programming, and initiate immune adaptations to promote receptivity to implantation and placental development. A key result is expansion of the pool of regulatory T cells that assist implantation by suppressing inflammation, mediating tolerance to male transplantation antigens, and promoting uterine vascular adaptation and placental development. Principal signaling agents in seminal fluid include prostaglandins and transforming growth factor-β. The balance of male signals affects the nature of the female response, providing a mechanism of ‟cryptic female choiceˮ that influences female reproductive investment. Male-female seminal fluid signaling is evident in all mammalian species investigated including human, and effects of seminal fluid in invertebrates indicate evolutionarily conserved mechanisms. Understanding the female response to seminal fluid will shed new light on infertility and pregnancy disorders and is critical to defining how events at conception influence offspring health.
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Affiliation(s)
- John E Schjenken
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, Australia
| | - Sarah A Robertson
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, Australia
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18
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Young CD, Tatieng S, Kongmanas K, Fongmoon D, Lomenick B, Yoon AJ, Kiattiburut W, Compostella F, Faull KF, Suree N, Angel JB, Tanphaichitr N. Sperm can act as vectors for HIV-1 transmission into vaginal and cervical epithelial cells. Am J Reprod Immunol 2019; 82:e13129. [PMID: 31066971 DOI: 10.1111/aji.13129] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 03/02/2019] [Accepted: 04/15/2019] [Indexed: 12/11/2022] Open
Abstract
PROBLEM Sperm are the major cells in semen. Human sperm possess a number of HIV-1 gp120 binding ligands including sulfogalactosylglycerolipid (SGG). However, the mechanisms of how sperm capture HIV-1 onto their surface are unclear. Furthermore, the ability of sperm to deliver HIV-1 to vaginal/cervical epithelial cells lining the lower female reproductive tract, as a first step in HIV-1 transmission, needs to be determined. METHOD OF STUDY Sperm from healthy donors were incubated with dual-tropic HIV-1CS204 (clinical isolate), and virus capture was determined by p24 antigen ELISA. The involvement of SGG in HIV-1 capture was assessed by determining Kd values of HIV-1 gp120-SGG binding as well as computational docking of SGG to the gp120 V3 loop. The ability of sperm-associated HIV-1 to infect peripheral blood mononuclear cells (PBMCs) and TZM-bl indicator cells was determined. Lastly, infection of vaginal (Vk2/E6E7), ectocervical (Ect1/E6E7), and endocervical (End1/E6E7) epithelial cells mediated by HIV-1-associated sperm was evaluated. RESULTS Sperm were able to capture HIV-1 in a dose-dependent manner, and the capture reached a maximum within 5 minutes. Captured HIV-1, however, could be removed from sperm by Percoll-gradient centrifugation. Affinity of gp120 for SGG was substantial, implicating sperm SGG in HIV-1 capture. Sperm-associated HIV-1 could productively infect PBMCs and TZM-bl cells, and was capable of being transmitted into vaginal/cervical epithelial cells. CONCLUSION Sperm are able to capture HIV-1, which remains infectious and is able to be transmitted into vaginal/cervical epithelial cells, a result indicating the importance of sperm in HIV transmission.
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Affiliation(s)
- Charlene D Young
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada.,Faculty of Medicine, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
| | - Suriya Tatieng
- Multidisciplinary Program in Biotechnology, The Graduate School, Division of Biochemistry and Biochemical Technology, Faculty of Science, Department of Chemistry, Chiang Mai University, Chiang Mai, Thailand
| | - Kessiri Kongmanas
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada.,Faculty of Medicine, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
| | - Duriya Fongmoon
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada.,Faculty of Medicine, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
| | - Brett Lomenick
- Pasarow Mass Spectrometry Laboratory, University of California, Los Angeles, Los Angeles, California
| | - Alexander J Yoon
- Pasarow Mass Spectrometry Laboratory, University of California, Los Angeles, Los Angeles, California
| | - Wongsakorn Kiattiburut
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada.,Department of Immunology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Federica Compostella
- Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Università degli Studi di Milano, Milano, Italy
| | - Kym F Faull
- Pasarow Mass Spectrometry Laboratory, University of California, Los Angeles, Los Angeles, California
| | - Nuttee Suree
- Multidisciplinary Program in Biotechnology, The Graduate School, Division of Biochemistry and Biochemical Technology, Faculty of Science, Department of Chemistry, Chiang Mai University, Chiang Mai, Thailand
| | - Jonathan B Angel
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada.,Faculty of Medicine, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada.,Division in Infectious Diseases, Department of Medicine, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Nongnuj Tanphaichitr
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada.,Faculty of Medicine, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada.,Faculty of Medicine, Department of Obstetrics & Gynecology, University of Ottawa, Ottawa, Ontario, Canada
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19
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Liu W, Han R, Wu H, Han D. Viral threat to male fertility. Andrologia 2019; 50:e13140. [PMID: 30569651 DOI: 10.1111/and.13140] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 07/24/2018] [Accepted: 08/03/2018] [Indexed: 01/01/2023] Open
Abstract
The detrimental effects of Zika virus (ZIKV) infection on mouse testicular functions have reminded a viral threat to male fertility. A broad range of virus families has tropism for male reproductive system, particularly the testes. Certain virus types of these viruses, such as mumps virus and human immunodeficiency virus (HIV), may severely damage the testes and consequently lead to male infertility. ZIKV has been recently found to damage testicular functions and lead to male infertility in mice. Many other viruses also have detrimental effects on host reproduction. Public attention has been paid to sexually transmitted viruses, such as HIV and hepatitis B and C viruses in humans and likewise in economically important farm animals. This article provides an overview on main viruses affecting the male reproductive system and their detrimental effects on fertility, and outlines some important issues for future study.
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Affiliation(s)
- Weihua Liu
- Institute of Basic Medical Sciences, School of Basic Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Ruiqin Han
- Institute of Basic Medical Sciences, School of Basic Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Han Wu
- Institute of Basic Medical Sciences, School of Basic Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Daishu Han
- Institute of Basic Medical Sciences, School of Basic Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
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20
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Marques PI, Gonçalves JC, Monteiro C, Cavadas B, Nagirnaja L, Barros N, Barros A, Carvalho F, Lopes AM, Seixas S. Semen quality is affected by HLA class I alleles together with sexually transmitted diseases. Andrology 2019; 7:867-877. [PMID: 31002754 DOI: 10.1111/andr.12625] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/28/2019] [Accepted: 03/14/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND The human leukocyte antigen (HLA) locus includes several genes with key roles in antigen presentation and immune response, some of them inclusively found to be associated with non-obstructive azoospermia. Still, HLA connections to other infertility phenotypes such as semen hyperviscosity (SHV), asthenozoospermia (AST), and oligozoospermia (OLI) have been often neglected. OBJECTIVES In this work, we aimed to evaluate the association of HLA class I and II genes with SHV, AST, and OLI phenotypes while exploring a possible role in an adaptive immune response to sexually transmitted diseases (STD). MATERIALS AND METHODS Whole-exome sequencing was performed in a Portuguese cohort of 71 infertility cases and 68 controls, followed by HLA typing using a specific software-HLA*PRG:LA tool. Molecular screenings of seven STD were carried out in a subset of 72 samples (30 cases and 42 controls). RESULTS Statistical tests uncovered three protective alleles: HLA-A*11:01, associated with all forms of male infertility (p = 0.0006); HLA-DQB1*03:02 with SHV and OLI (PSHV = 0.0303, POLI = 0.0153); and HLA-A*29:02 with OLI (p = 0.0355), which was found to interfere in sperm number together with HPV (p = 0.0313). Five risk alleles were also identified: two linked with SHV (HLA-B*50:01, p = 0.0278; and HLA-C*06:02, p = 0.0461), another one with both SHV and OLI (HLA-DQA1*05:01, PSHV = 0.0444 and POLI =0.0265), and two with OLI (HLA-C*03:03, p = 0.0480; and HLA-DQB1*03:01, p = 0.0499). Here, HLA-C*03:03 carriers tend to be HPV infected. CONCLUSIONS The application of HLA*PRG:LA tool to the study of male infertility provided novel insights for an HLA correlation with semen quality, namely among SHV and OLI phenotypes. The discovery of an HLA-A*29:02/HPV crosstalk, together with former reports of HLA alleles conferring resistance-susceptibility to diverse human pathogens, raises the hypothesis of a mechanistic link between male infertility, HLA polymorphism, and host response to STD.
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Affiliation(s)
- P I Marques
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (i3S), Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Porto, Portugal
| | - J C Gonçalves
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (i3S), Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Porto, Portugal
| | - C Monteiro
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (i3S), Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Porto, Portugal
| | - B Cavadas
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (i3S), Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Porto, Portugal.,Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal
| | - L Nagirnaja
- Department of Genetics, Washington University School of Medicine, St. Louis, MO, USA
| | - N Barros
- Center for Reproductive Genetics Alberto Barros, Porto, Portugal
| | - A Barros
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (i3S), Porto, Portugal.,Center for Reproductive Genetics Alberto Barros, Porto, Portugal.,Genetics, Department of Pathology, Faculty of Medicine, University of Porto, Porto, Portugal
| | - F Carvalho
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (i3S), Porto, Portugal.,Genetics, Department of Pathology, Faculty of Medicine, University of Porto, Porto, Portugal
| | - A M Lopes
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (i3S), Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Porto, Portugal
| | - S Seixas
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (i3S), Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Porto, Portugal
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21
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Histidine-Rich Glycoprotein Inhibits HIV-1 Infection in a pH-Dependent Manner. J Virol 2019; 93:JVI.01749-18. [PMID: 30518643 DOI: 10.1128/jvi.01749-18] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 11/13/2018] [Indexed: 01/27/2023] Open
Abstract
Histidine-rich glycoprotein (HRG) is an abundant plasma protein with a multidomain structure, allowing its interaction with many ligands, including phospholipids, plasminogen, fibrinogen, IgG antibodies, and heparan sulfate. HRG has been shown to regulate different biological responses, such as angiogenesis, coagulation, and fibrinolysis. Here, we found that HRG almost completely abrogated the infection of Ghost cells, Jurkat cells, CD4+ T cells, and macrophages by HIV-1 at a low pH (range, 6.5 to 5.5) but not at a neutral pH. HRG was shown to interact with the heparan sulfate expressed by target cells, inhibiting an early postbinding step associated with HIV-1 infection. More importantly, by acting on the viral particle itself, HRG induced a deleterious effect, which reduces viral infectivity. Because cervicovaginal secretions in healthy women show low pH values, even after semen deposition, our observations suggest that HRG might represent a constitutive defense mechanism in the vaginal mucosa. Of note, low pH also enabled HRG to inhibit the infection of HEp-2 cells and Vero cells by respiratory syncytial virus (RSV) and herpes simplex virus 2 (HSV-2), respectively, suggesting that HRG might display broad antiviral activity under acidic conditions.IMPORTANCE Vaginal intercourse represents a high-risk route for HIV-1 transmission. The efficiency of male-to-female HIV-1 transmission has been estimated to be 1 in every 1,000 episodes of sexual intercourse, reflecting the high degree of protection conferred by the genital mucosa. However, the contribution of different host factors to the protection against HIV-1 at mucosal surfaces remains poorly defined. Here, we report for the first time that acidic values of pH enable the plasma protein histidine-rich glycoprotein (HRG) to strongly inhibit HIV-1 infection. Because cervicovaginal secretions usually show low pH values, our observations suggest that HRG might represent a constitutive antiviral mechanism in the vaginal mucosa. Interestingly, infection by other viruses, such as respiratory syncytial virus and herpes simplex virus 2, was also markedly inhibited by HRG at low pH values, suggesting that extracellular acidosis enables HRG to display broad antiviral activity.
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22
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Abstract
The terms extracellular vesicles, microvesicles, oncosomes, or exosomes are often used interchangeably as descriptors of particles that are released from cells and comprise a lipid membrane that encapsulates nucleic acids and proteins. Although these entities are defined based on a specific size range and/or mechanism of release, the terminology is often ambiguous. Nevertheless, these vesicles are increasingly recognized as important modulators of intercellular communication. The generic characterization of extracellular vesicles could also be used as a descriptor of enveloped viruses, highlighting the fact that extracellular vesicles and enveloped viruses are similar in both composition and function. Their high degree of similarity makes differentiating between vesicles and enveloped viruses in biological specimens particularly difficult. Because viral particles and extracellular vesicles are produced simultaneously in infected cells, it is necessary to separate these populations to understand their independent functions. We summarize current understanding of the similarities and differences of extracellular vesicles, which henceforth we will refer to as exosomes, and the enveloped retrovirus, HIV-1. Here, we focus on the presence of these particles in semen, as these are of particular importance during HIV-1 sexual transmission. While there is overlap in the terminology and physical qualities between HIV-1 virions and exosomes, these two types of intercellular vehicles may differ depending on the bio-fluid source. Recent data have demonstrated that exosomes from human semen serve as regulators of HIV-1 infection that may contribute to the remarkably low risk of infection per sexual exposure.
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Affiliation(s)
- Jennifer L. Welch
- Department of Microbiology and Immunology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242-1109, USA
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, 200 Hawkins Drive, Iowa City, IA 52242-1109, USA
- Medical Service, Iowa City Veterans Affairs Medical Center, University of Iowa, 604 Highway 6, Iowa City, IA 52246-2208, USA
| | - Jack T. Stapleton
- Department of Microbiology and Immunology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242-1109, USA
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, 200 Hawkins Drive, Iowa City, IA 52242-1109, USA
- Medical Service, Iowa City Veterans Affairs Medical Center, University of Iowa, 604 Highway 6, Iowa City, IA 52246-2208, USA
- *Correspondence: Jack T. Stapleton,
| | - Chioma M. Okeoma
- Department of Microbiology and Immunology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242-1109, USA
- Department of Pharmacologic Sciences, Basic Sciences Tower, Rm 8-142, Stony Brook, University School of Medicine, Stony Brook, NY 11794-8651, USA
- Chioma M. Okeoma,
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23
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Kaltenbach DD, Jaishankar D, Hao M, Beer JC, Volin MV, Desai UR, Tiwari V. Sulfotransferase and Heparanase: Remodeling Engines in Promoting Virus Infection and Disease Development. Front Pharmacol 2018; 9:1315. [PMID: 30555321 PMCID: PMC6282075 DOI: 10.3389/fphar.2018.01315] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 10/29/2018] [Indexed: 01/08/2023] Open
Abstract
An extraordinary binding site generated in heparan sulfate (HS) structures, during its biosynthesis, provides a unique opportunity to interact with multiple protein ligands including viral proteins, and therefore adds tremendous value to this master molecule. An example of such a moiety is the sulfation at the C3 position of glucosamine residues in HS chain via 3-O sulfotransferase (3-OST) enzymes, which generates a unique virus-cell fusion receptor during herpes simplex virus (HSV) entry and spread. Emerging evidence now suggests that the unique patterns in HS sulfation assist multiple viruses in invading host cells at various steps of their life cycles. In addition, sulfated-HS structures are known to assist in invading host defense mechanisms and initiating multiple inflammatory processes; a critical event in the disease development. All these processes are detrimental for the host and therefore raise the question of how HS-sulfation is regulated. Epigenetic modulations have been shown to be implicated in these reactions during HSV infection as well as in HS modifying enzyme sulfotransferases, and therefore pose a critical component in answering it. Interestingly, heparanase (HPSE) activity is shown to be upregulated during virus infection and multiple other diseases assisting in virus replication to promote cell and tissue damage. These phenomena suggest that sulfotransferases and HPSE serve as key players in extracellular matrix remodeling and possibly generating unique signatures in a given disease. Therefore, identifying the epigenetic regulation of OST genes, and HPSE resulting in altered yet specific sulfation patterns in HS chain during virus infection, will be a significant a step toward developing potential diagnostic markers and designing novel therapies.
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Affiliation(s)
- Dominik D Kaltenbach
- Department of Biomedical Sciences, College of Graduate Studies, Midwestern University, Downers Grove, IL, United States
| | - Dinesh Jaishankar
- Department of Ophthalmology & Visual Sciences, University of Illinois at Chicago, Chicago, IL, United States
| | - Meng Hao
- Chicago College of Pharmacy, Midwestern University, Downers Grove, IL, United States
| | - Jacob C Beer
- Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, IL, United States
| | - Michael V Volin
- Department of Microbiology & Immunology, College of Graduate Studies, Midwestern University, Downers Grove, IL, United States
| | - Umesh R Desai
- Department of Medicinal Chemistry and Institute for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, VA, United States
| | - Vaibhav Tiwari
- Department of Microbiology & Immunology, College of Graduate Studies, Midwestern University, Downers Grove, IL, United States
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24
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Epigallocatechin-3-gallate local pre-exposure application prevents SHIV rectal infection of macaques. Mucosal Immunol 2018; 11:1230-1238. [PMID: 29855550 PMCID: PMC6030487 DOI: 10.1038/s41385-018-0025-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 02/23/2018] [Accepted: 03/27/2018] [Indexed: 02/04/2023]
Abstract
Epigallocatechin-3-gallate (EGCG), a natural and major ingredient of green tea, has been shown to have anti-inflammation and anti-HIV-1 properties. We demonstrated that the intrarectal administration of EGCG could protect rhesus macaques from repetitive, intrarectal challenges with low-dose SHIVSF162P3N. This protection has a per-exposure risk reduction of 91.5% (P = 0.0009; log-rank test) and a complete protection of 87.5% (P < 0.001; Fisher's exact test). All protected animals showed no evidence of systemic and mucosal SHIV infection as demonstrated by the absence of viral RNA, DNA and antibodies. In contrast, all controls became infected after repeated SHIV challenges (a median of 2.5 times, range of 1-8 times). Mechanistically, EGCG could block the binding of HIV-1 gp120 to CD4 receptor and suppress the macrophage infiltration/activation in the rectal mucosa of macaques. These data support further clinical evaluation and development of EGCG as a novel, safe and cost-effective microbicide for preventing sexual transmission of HIV-1.
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25
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Remes Lenicov F, Paletta AL, Gonzalez Prinz M, Varese A, Pavillet CE, Lopez Malizia Á, Sabatté J, Geffner JR, Ceballos A. Prostaglandin E2 Antagonizes TGF-β Actions During the Differentiation of Monocytes Into Dendritic Cells. Front Immunol 2018; 9:1441. [PMID: 29988364 PMCID: PMC6023975 DOI: 10.3389/fimmu.2018.01441] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 06/11/2018] [Indexed: 12/27/2022] Open
Abstract
Inflammatory dendritic cells (DCs) are a distinct subset of DCs that derive from circulating monocytes infiltrating injured tissues. Monocytes can differentiate into DCs with different functional signatures, depending on the presence of environment stimuli. Among these stimuli, transforming growth factor-beta (TGF-β) and prostaglandin E2 (PGE2) have been shown to modulate the differentiation of monocytes into DCs with different phenotypes and functional profiles. In fact, both mediators lead to contrasting outcomes regarding the production of inflammatory and anti-inflammatory cytokines. Previously, we have shown that human semen, which contains high concentrations of PGE2, promoted the differentiation of DCs into a tolerogenic profile through a mechanism dependent on signaling by E-prostanoid receptors 2 and 4. Notably, this effect was induced despite the huge concentration of TGF-β present in semen, suggesting that PGE2 overrides the influence exerted by TGF-β. No previous studies have analyzed the joint actions induced by PGE2 and TGF-β on the function of monocytes or DCs. Here, we analyzed the phenotype and functional profile of monocyte-derived DCs differentiated in the presence of TGF-β and PGE2. DC differentiation guided by TGF-β alone enhanced the expression of CD1a and abrogated LPS-induced expression of IL-10, while differentiation in the presence of PGE2 impaired CD1a expression, preserved CD14 expression, abrogated IL-12 and IL-23 production, stimulated IL-10 production, and promoted the expansion of FoxP3+ regulatory T cells in a mixed lymphocyte reaction. Interestingly, DCs differentiated in the presence of TGF-β and PGE2 showed a phenotype and functional profile closely resembling those induced by PGE2 alone. Finally, we found that PGE2 inhibited TGF-β signaling through an action exerted by EP2 and EP4 receptors coupled to cyclic AMP increase and protein kinase A activity. These results indicate that PGE2 suppresses the influence exerted by TGF-β during DC differentiation, imprinting a tolerogenic signature. High concentrations of TGF-β and PGE2 are usually found in infectious, autoimmune, and neoplastic diseases. Our observations suggest that in these scenarios PGE2 might play a mandatory role in the acquisition of a regulatory profile by DCs.
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Affiliation(s)
- Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ana Luz Paletta
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Melina Gonzalez Prinz
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Augusto Varese
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Clara E Pavillet
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Álvaro Lopez Malizia
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Juan Sabatté
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Jorge Raul Geffner
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ana Ceballos
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
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Morales Berrocal M, Echavarría-Sánchez M, Villeda Gabriel G. Microorganimos patógenos productores de alteraciones seminales relacionadas con infertilidad. PERINATOLOGÍA Y REPRODUCCIÓN HUMANA 2017. [DOI: 10.1016/j.rprh.2018.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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27
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Garbarino Azúa DJ, Saucedo L, Giordana S, Magri ML, Buffone MG, Neuspiller F, Vazquez-Levin MH, Marín-Briggiler CI. Fibroblast growth factor 2 (FGF2) is present in human spermatozoa and is related with sperm motility. The use of recombinant FGF2 to improve motile sperm recovery. Andrology 2017; 5:990-998. [PMID: 28732140 DOI: 10.1111/andr.12398] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/12/2017] [Accepted: 06/12/2017] [Indexed: 01/14/2023]
Abstract
Fibroblast growth factors (FGFs) and their receptors (FGFRs) regulate several functions of somatic cells. In a previous work, we reported FGFR expression in human spermatozoa and their involvement in motility. This study aimed to evaluate the presence and localization of fibroblast growth factor 2 (FGF2) in human spermatozoa, to determine the relationship of FGF2 levels with conventional semen parameters and to assess the effect of recombinant FGF2 (rFGF2) on sperm recovery in a selection procedure. Western immunoblotting analysis using an antibody against FGF2 revealed an 18-kDa band in sperm protein extracts. The protein was immunolocalized in the sperm flagellum and acrosomal region, as well as in all germ cells. Sperm FGF2 levels, assessed by flow cytometry, showed a positive (p < 0.05) correlation with sperm concentration, motility, total sperm number and total motile cells per ejaculate. Moreover, samples with abnormal motility depicted diminished (p < 0.01) FGF2 levels compared to those with normal motility. Spermatozoa exposed to rFGF2 bound the protein, exhibited higher (p < 0.05) total and motile sperm recoveries, and increased (p < 0.01) kinematic parameters after the swim-up. Findings herein presented lead to consider sperm FGF2 level as a potential marker of sperm quality, and rFGF2 as a supplement for improving sperm recovery in selection techniques.
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Affiliation(s)
- D J Garbarino Azúa
- Instituto de Biología y Medicina Experimental (IBYME), National Research Council of Argentina (CONICET), Buenos Aires, Argentina
| | - L Saucedo
- Instituto de Biología y Medicina Experimental (IBYME), National Research Council of Argentina (CONICET), Buenos Aires, Argentina
| | - S Giordana
- Instituto Valenciano de Infertilidad (IVI), Buenos Aires, Argentina
| | - M L Magri
- Instituto Valenciano de Infertilidad (IVI), Buenos Aires, Argentina
| | - M G Buffone
- Instituto de Biología y Medicina Experimental (IBYME), National Research Council of Argentina (CONICET), Buenos Aires, Argentina
| | - F Neuspiller
- Instituto Valenciano de Infertilidad (IVI), Buenos Aires, Argentina
| | - M H Vazquez-Levin
- Instituto de Biología y Medicina Experimental (IBYME), National Research Council of Argentina (CONICET), Buenos Aires, Argentina
| | - C I Marín-Briggiler
- Instituto de Biología y Medicina Experimental (IBYME), National Research Council of Argentina (CONICET), Buenos Aires, Argentina
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28
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Monocytes but Not Lymphocytes Carrying HIV-1 on Their Surface Transmit Infection to Human Tissue Ex Vivo. J Virol 2016; 90:9833-9840. [PMID: 27558419 DOI: 10.1128/jvi.00742-16] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 08/15/2016] [Indexed: 12/16/2022] Open
Abstract
Unprotected sexual intercourse with HIV-infected men is the major cause of new infections. HIV virions are released into semen by various cells of the male genital tract, as well as by infected monocytes and lymphocytes present in semen. Some of these virions may attach to the surfaces of cells, infected or uninfected. We investigated whether cells carrying attached HIV on their surfaces can transmit infection. We addressed this question in a model system of human tissue exposed ex vivo to monocytes and lymphocytes carrying HIV on their surfaces. We gamma irradiated the cells to prevent their productive infection. In spite of comparable amounts of HIV attached to monocytes and lymphocytes, only monocytes were capable of transmitting infection and triggering productive infection in tissue. This HIV-1 transmission was mediated by cell-cell contacts. Our experiments suggest that in vivo, HIV attached to infected or uninfected monocytes, which far outnumber lymphocytes in HIV-infected semen, may contribute to sexual transmission of HIV from men to their partners. IMPORTANCE The vast majority of new HIV infections occur through sexual transmission, in which HIV is transferred from the semen of an infected male to an uninfected partner. In semen, HIV-1 particles may exist as free-floating virions; inside infected cells; or attached to the surfaces of cells, whether they are infected or not. Here, we investigated whether HIV attached to the surfaces of monocytes or lymphocytes could transmit infection to human tissue. Incubation of human tissue with monocyte-attached HIV resulted in productive tissue infection. In contrast, there was no infection of tissues when they were incubated with lymphocyte-attached HIV-1. Our results highlight the important role that seminal monocytes may play in HIV transmission in vivo, especially since monocytes far outnumber lymphocytes in the semen of HIV-infected individuals.
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29
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CD4-mimetic sulfopeptide conjugates display sub-nanomolar anti-HIV-1 activity and protect macaques against a SHIV162P3 vaginal challenge. Sci Rep 2016; 6:34829. [PMID: 27721488 PMCID: PMC5056392 DOI: 10.1038/srep34829] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 09/15/2016] [Indexed: 11/18/2022] Open
Abstract
The CD4 and the cryptic coreceptor binding sites of the HIV-1 envelope glycoprotein are key to viral attachment and entry. We developed new molecules comprising a CD4 mimetic peptide linked to anionic compounds (mCD4.1-HS12 and mCD4.1-PS1), that block the CD4-gp120 interaction and simultaneously induce the exposure of the cryptic coreceptor binding site, rendering it accessible to HS12- or PS1- mediated inhibition. Using a cynomolgus macaque model of vaginal challenge with SHIV162P3, we report that mCD4.1-PS1, formulated into a hydroxyethyl-cellulose gel provides 83% protection (5/6 animals). We next engineered the mCD4 moiety of the compound, giving rise to mCD4.2 and mCD4.3 that, when conjugated to PS1, inhibited cell-free and cell-associated HIV-1 with particularly low IC50, in the nM to pM range, including some viral strains that were resistant to the parent molecule mCD4.1. These chemically defined molecules, which target major sites of vulnerability of gp120, are stable for at least 48 hours in conditions replicating the vaginal milieu (37 °C, pH 4.5). They efficiently mimic several large gp120 ligands, including CD4, coreceptor or neutralizing antibodies, to which their efficacy compares very favorably, despite a molecular mass reduced to 5500 Da. Together, these results support the development of such molecules as potential microbicides.
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30
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Semen as virus reservoir? J Assist Reprod Genet 2016; 33:1255-6. [PMID: 27241530 PMCID: PMC5010805 DOI: 10.1007/s10815-016-0747-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 05/20/2016] [Indexed: 01/01/2023] Open
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31
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Jindal SK, Rawlins RG, Muller CH, Drobnis EZ. Guidelines for risk reduction when handling gametes from infectious patients seeking assisted reproductive technologies. Reprod Biomed Online 2016; 33:121-30. [PMID: 27235103 DOI: 10.1016/j.rbmo.2016.04.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 04/22/2016] [Accepted: 04/26/2016] [Indexed: 02/07/2023]
Abstract
According to the Americans with Disabilities Act (1990), couples with blood-borne viruses that lead to infectious disease cannot be denied fertility treatment as long as the direct threat to the health and safety of others can be reduced or eliminated by a modification of policies or procedures. Three types of infectious patients are commonly discussed in the context of fertility treatment: those with human immunodeficiency virus (HIV), hepatitis C or hepatitis B. Seventy-five per cent of hepatitis C or HIV positive men and women are in their reproductive years, and these couples look to assisted reproductive techniques for risk reduction in conceiving a pregnancy. In many cases, only one partner is infected. Legal and ethical questions about treatment of infectious patients aside, the question most asked by clinical embryologists and andrologists is: "What are the laboratory protocols for working with gametes and embryos from patients with infectious disease?" The serostatus of each patient is the key that informs appropriate treatments. This guidance document describes protocols for handling gametes from seroconcordant and serodiscordant couples with infectious disease. With minor modifications, infectious patients with stable disease status and undetectable or low viral load can be accommodated in the IVF laboratory.
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Affiliation(s)
- Sangita K Jindal
- Department Obstetrics, Gynecology and Women's Health, Albert Einstein College of Medicine, Montefiore's Institute for Reproductive Medicine and Health, 1300 Morris Park Avenue, Bronx, NY 10461, USA.
| | - Richard G Rawlins
- Department Obstetrics and Gynecology, Rush University Medical Center, 1653 West Congress Parkway, Chicago, IL 60612
| | - Charles H Muller
- Male Fertility Lab, Department Urology, University of Washington, 4245 Roosevelt Way NE, Seattle, WA 98105
| | - Erma Z Drobnis
- Reproductive Medicine and Fertility, Department Obstetrics, Gynecology and Women's Health, University of Missouri, 500 N. Keene St, Suite 203, Columbia, MO 65201
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32
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Ceña-Díez R, Sepúlveda-Crespo D, Maly M, Muñoz-Fernández MA. Dendrimeric based microbicides against sexual transmitted infections associated to heparan sulfate. RSC Adv 2016. [DOI: 10.1039/c6ra06969j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Cell surface heparan sulfate (HS) represents a common link that many sexually transmitted infections (STIs) require for infection.
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Affiliation(s)
- Rafael Ceña-Díez
- Laboratorio InmunoBiología Molecular
- Hospital General Universitario Gregorio Marañón
- 28007 Madrid
- Spain
- Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM)
| | - Daniel Sepúlveda-Crespo
- Laboratorio InmunoBiología Molecular
- Hospital General Universitario Gregorio Marañón
- 28007 Madrid
- Spain
- Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM)
| | - Marek Maly
- Department of Innovative Technologies
- University of Applied Science of Southern Switzerland
- Switzerland
- Faculty of Science
- J. E. Purkinje University
| | - Mª Angeles Muñoz-Fernández
- Laboratorio InmunoBiología Molecular
- Hospital General Universitario Gregorio Marañón
- 28007 Madrid
- Spain
- Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM)
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Human Mucosal Mast Cells Capture HIV-1 and Mediate Viral trans-Infection of CD4+ T Cells. J Virol 2015; 90:2928-37. [PMID: 26719250 DOI: 10.1128/jvi.03008-15] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 12/21/2015] [Indexed: 12/31/2022] Open
Abstract
UNLABELLED The gastrointestinal mucosa is the primary site where human immunodeficiency virus type 1 (HIV-1) invades, amplifies, and becomes persistently established, and cell-to-cell transmission of HIV-1 plays a pivotal role in mucosal viral dissemination. Mast cells are widely distributed in the gastrointestinal tract and are early targets for invasive pathogens, and they have been shown to have increased density in the genital mucosa in HIV-infected women. Intestinal mast cells express numerous pathogen-associated molecular patterns (PAMPs) and have been shown to combat various viral, parasitic, and bacterial infections. However, the role of mast cells in HIV-1 infection is poorly defined. In this study, we investigated their potential contributions to HIV-1 transmission. Mast cells isolated from gut mucosal tissues were found to express a variety of HIV-1 attachment factors (HAFs), such as DC-SIGN, heparan sulfate proteoglycan (HSPG), and α4β7 integrin, which mediate capture of HIV-1 on the cell surface. Intriguingly, following coculture with CD4(+) T cells, mast cell surface-bound viruses were efficiently transferred to target T cells. Prior blocking with anti-HAF antibody or mannan before coculture impaired viral trans-infection. Cell-cell conjunctions formed between mast cells and T cells, to which viral particles were recruited, and these were required for efficient cell-to-cell HIV-1 transmission. Our results reveal a potential function of gut mucosal mast cells in HIV-1 dissemination in tissues. Strategies aimed at preventing viral capture and transfer mediated by mast cells could be beneficial in combating primary HIV-1 infection. IMPORTANCE In this study, we demonstrate the role of human mast cells isolated from mucosal tissues in mediating HIV-1 trans-infection of CD4(+) T cells. This finding facilitates our understanding of HIV-1 mucosal infection and will benefit the development of strategies to combat primary HIV-1 dissemination.
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Tecle E, Gagneux P. Sugar-coated sperm: Unraveling the functions of the mammalian sperm glycocalyx. Mol Reprod Dev 2015; 82:635-50. [PMID: 26061344 PMCID: PMC4744710 DOI: 10.1002/mrd.22500] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Accepted: 04/30/2015] [Indexed: 01/05/2023]
Abstract
Mammalian spermatozoa are coated with a thick glycocalyx that is assembled during sperm development, maturation, and upon contact with seminal fluid. The sperm glycocalyx is critical for sperm survival in the female reproductive tract and is modified during capacitation. The complex interplay among the various glycoconjugates generates numerous signaling motifs that may regulate sperm function and, as a result, fertility. Nascent spermatozoa assemble their own glycans while the cells still possess a functional endoplasmic reticulum and Golgi in the seminiferous tubule, but once spermatogenesis is complete, they lose the capacity to produce glycoconjugates de novo. Sperm glycans continue to be modified, during epididymal transit by extracellular glycosidases and glycosyltransferases. Furthermore, epididymal cells secrete glycoconjugates (glycophosphatidylinositol-anchored glycoproteins and glycolipids) and glycan-rich microvesicles that can fuse with the maturing sperm membrane. The sperm glycocalyx mediates numerous functions in the female reproductive tract, including the following: inhibition of premature capacitation; passage through the cervical mucus; protection from innate and adaptive female immunity; formation of the sperm reservoir; and masking sperm proteins involved in fertilization. The immense diversity in sperm-associated glycans within and between species forms a remarkable challenge to our understanding of essential sperm glycan functions.
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Affiliation(s)
- Eillen Tecle
- Division of Comparative Pathology and Medicine, Department of Pathology, Glycobiology Research and Training Center, University of California San Diego, La Jolla, California
| | - Pascal Gagneux
- Division of Comparative Pathology and Medicine, Department of Pathology, Glycobiology Research and Training Center, University of California San Diego, La Jolla, California
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Human Blood-Circulating Basophils Capture HIV-1 and Mediate Viral trans-Infection of CD4+ T Cells. J Virol 2015; 89:8050-62. [PMID: 26018157 DOI: 10.1128/jvi.01021-15] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 05/18/2015] [Indexed: 12/12/2022] Open
Abstract
UNLABELLED Cell-associated HIV-1 infection has been proposed to play a pivotal role in the spread of HIV-1 infection. Granulocytes are a category of white blood cells, comprising mainly basophils, neutrophils, and eosinophils, and participate in various inflammatory reactions and defense against pathogens. Here, we investigated the role of human blood granulocytes in the dissemination of HIV-1. These cells were found to express a variety of HIV-1 attachment factors (HAFs). Basophils expressed HAFs dendritic cell (DC)-specific intercellular adhesion molecule 3 (ICAM3)-grabbing nonintegrin (DC-SIGN), DC immunoreceptor (DCIR), heparan sulfate proteoglycan (HSPG), and α4β7 integrin and mediated the most efficient capture of HIV-1 on the cell surface. Neutrophils were found to express DCIR and demonstrated limited efficiency of viral capture. Eosinophils expressed α4β7 integrin but exhibited little or no virus-binding capacity. Intriguingly, following direct contact with CD4+ T cells, viruses harbored on the surface of basophils were transferred to T cells. The contact between basophils and CD4+ T cells and formation of infectious synapses appeared necessary for efficient HIV-1 spread. In HIV-1-infected individuals, the frequency of basophils remained fairly stable over the course of disease, regardless of CD4+ T depletion or the emergence of AIDS-associated opportunistic infections. Collectively, our results provide novel insights into the roles of granulocytes, particularly basophils, in HIV-1 dissemination. Thus, strategies designed to prevent basophil-mediated viral capture and transfer may be developed into a new form of therapy. IMPORTANCE Cell-associated HIV-1 infection has been proposed to play a pivotal role in the spread of HIV-1 infection. Here, we demonstrated that human blood-circulating granulocytes, particularly basophils, can capture HIV-1 and mediate viral trans-infection of CD4+ T cells. The expression of a variety of HIV-1 attachment factors, such as the C-type lectins, etc., facilitates viral capture and transfer. Intriguingly, the frequency of basophils in patients with different levels of CD4+ T counts remains fairly stable during the course of disease. Our results provide novel insights into the roles of granulocytes, particularly basophils, in HIV-1 dissemination. We suggest that strategies designed to prevent basophil-mediated viral capture and transfer may be a new direction for the development of anti-HIV therapy.
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Colorectal mucus binds DC-SIGN and inhibits HIV-1 trans-infection of CD4+ T-lymphocytes. PLoS One 2015; 10:e0122020. [PMID: 25793526 PMCID: PMC4368515 DOI: 10.1371/journal.pone.0122020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 02/09/2015] [Indexed: 12/20/2022] Open
Abstract
Bodily secretions, including breast milk and semen, contain factors that modulate HIV-1 infection. Since anal intercourse caries one of the highest risks for HIV-1 transmission, our aim was to determine whether colorectal mucus (CM) also contains factors interfering with HIV-1 infection and replication. CM from a number of individuals was collected and tested for the capacity to bind DC-SIGN and inhibit HIV-1 cis- or trans-infection of CD4+ T-lymphocytes. To this end, a DC-SIGN binding ELISA, a gp140 trimer competition ELISA and HIV-1 capture/ transfer assays were utilized. Subsequently we aimed to identify the DC-SIGN binding component through biochemical characterization and mass spectrometry analysis. CM was shown to bind DC-SIGN and competes with HIV-1 gp140 trimer for binding. Pre-incubation of Raji-DC-SIGN cells or immature dendritic cells (iDCs) with CM potently inhibits DC-SIGN mediated trans-infection of CD4+ T-lymphocytes with CCR5 and CXCR4 using HIV-1 strains, while no effect on direct infection is observed. Preliminary biochemical characterization demonstrates that the component seems to be large (>100kDa), heat and proteinase K resistant, binds in a α1–3 mannose independent manner and is highly variant between individuals. Immunoprecipitation using DC-SIGN-Fc coated agarose beads followed by mass spectrometry indicated lactoferrin (fragments) and its receptor (intelectin-1) as candidates. Using ELISA we showed that lactoferrin levels within CM correlate with DC-SIGN binding capacity. In conclusion, CM can bind the C-type lectin DC-SIGN and block HIV-1 trans-infection of both CCR5 and CXCR4 using HIV-1 strains. Furthermore, our data indicate that lactoferrin is a DC-SIGN binding component of CM. These results indicate that CM has the potential to interfere with pathogen transmission and modulate immune responses at the colorectal mucosa.
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Wei JH, Feng X, Sun ZJ, Cheng P, Ma BF, Zhao J, Dong YH, Zhang YQ, Li Z. Different locations of RANTES and its receptors on mouse epididymal spermatozoa. Reprod Fertil Dev 2015; 28:RD14231. [PMID: 25786351 DOI: 10.1071/rd14231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 02/09/2015] [Indexed: 02/28/2024] Open
Abstract
Our previous study showed that the chemokine regulated upon activation normal T-cell expressed and secreted (RANTES) originating from the mouse epididymis bound to the midpiece of luminal spermatozoa. The present study was undertaken to investigate the association between RANTES and epididymal spermatozoa and to determine whether the association is mediated by the RANTES receptors CCR1, CCR3 or CCR5. The use of reverse transcription polymerase chain reaction (RT-PCR), immunohistochemical staining and immunofluorescent staining demonstrated that RANTES secreted by apical and narrow cells of mouse epididymal ducts was associated with luminal spermatozoa. Flow cytometric analysis and immunofluorescent labelling revealed that the association between RANTES and spermatozoa of different regions weakened gradually as the spermatozoa moved along the epididymis. Moreover, CCR1, CCR3 and CCR5 were expressed in epididymal spermatozoa and located on the head of epididymal spermatozoa, while RANTES was generally located at the midpiece. In conclusion, RANTES and its receptors were not in the same sperm location, suggesting that RANTES binding to mouse epididymal spermatozoa is independent of CCR1, CCR3 and CCR5.
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Houzet L, Matusali G, Dejucq-Rainsford N. Origins of HIV-infected leukocytes and virions in semen. J Infect Dis 2015; 210 Suppl 3:S622-30. [PMID: 25414416 DOI: 10.1093/infdis/jiu328] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Although semen is the principal vector of human immunodeficiency virus (HIV) dissemination worldwide, the origin of the infected leukocytes and free viral particles in this body fluid remain elusive. Here we review the accumulated evidence of the genital origin of HIV in semen from therapy naive individuals and men receiving suppressive highly active antiretroviral therapy (HAART), summarize the data on the detection and localization of HIV/SIV within the male genital tract, discuss the potential involvement of each genital tissue as a source of infected cells and virions in semen in the absence and presence of HAART, and suggest further studies. Deciphering the exact sources of HIV in semen will be crucial to improving HIV transmission prevention strategies.
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Affiliation(s)
- Laurent Houzet
- Institut National de la Santé et de la Recherche Médicale, U1085-Institut de Recherche en Santé, Environnement et Travail, Université de Rennes 1, Structure Fédérative Recherche Biosit, Rennes, France
| | - Giulia Matusali
- Institut National de la Santé et de la Recherche Médicale, U1085-Institut de Recherche en Santé, Environnement et Travail, Université de Rennes 1, Structure Fédérative Recherche Biosit, Rennes, France
| | - Nathalie Dejucq-Rainsford
- Institut National de la Santé et de la Recherche Médicale, U1085-Institut de Recherche en Santé, Environnement et Travail, Université de Rennes 1, Structure Fédérative Recherche Biosit, Rennes, France
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Tiwari V, Tarbutton MS, Shukla D. Diversity of heparan sulfate and HSV entry: basic understanding and treatment strategies. Molecules 2015; 20:2707-27. [PMID: 25665065 PMCID: PMC6272628 DOI: 10.3390/molecules20022707] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 02/02/2015] [Indexed: 12/30/2022] Open
Abstract
A modified form of heparan sulfate (HS) known as 3-O-sulfated heparan sulfate (3-OS HS) generates fusion receptor for herpes simplex virus (HSV) entry and spread. Primary cultures of corneal fibroblasts derived from human eye donors have shown the clinical significance of this receptor during HSV corneal infection. 3-OS HS- is a product of a rare enzymatic modification at C3 position of glucosamine residue which is catalyzed by 3-O-sulfotransferases (3-OSTs) enzymes. From humans to zebrafish, the 3-OST enzymes are highly conserved and widely expressed in cells and tissues. There are multiple forms of 3-OSTs each producing unique subset of sulfated HS making it chemically diverse and heterogeneous. HSV infection of cells or zebrafish can be used as a unique tool to understand the structural-functional activities of HS and 3-OS HS and likewise, the infection can be used as a functional assay to screen phage display libraries for identifying HS and 3-OS HS binding peptides or small molecule inhibitors. Using this approach over 200 unique 12-mer HS and 3-OS HS recognizing peptides were isolated and characterized against HSV corneal infection where 3-OS HS is known to be a key receptor. In this review we discuss emerging role of 3-OS HS based therapeutic strategies in preventing viral infection and tissue damage.
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Affiliation(s)
- Vaibhav Tiwari
- Department of Microbiology & Immunology, Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, IL 60515, USA.
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, IL 60612, USA.
| | - Morgan S Tarbutton
- Department of Microbiology & Immunology, Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, IL 60515, USA.
| | - Deepak Shukla
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, IL 60612, USA.
- Department of Microbiology & Immunology, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA.
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40
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Male infertility: a public health issue caused by sexually transmitted pathogens. Nat Rev Urol 2014; 11:672-87. [PMID: 25330794 DOI: 10.1038/nrurol.2014.285] [Citation(s) in RCA: 134] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Sexually transmitted diseases (STDs) are caused by several pathogens, including bacteria, viruses and protozoa, and can induce male infertility through multiple pathophysiological mechanisms. Additionally, horizontal transmission of STD pathogens to sexual partners or vertical transmission to fetuses and neonates is possible. Chlamydia trachomatis, Ureaplasma spp., human papillomavirus, hepatitis B and hepatitis C viruses, HIV-1 and human cytomegalovirus have all been detected in semen from symptomatic and asymptomatic men with testicular, accessory gland and urethral infections. These pathogens are associated with poor sperm quality and decreased sperm concentration and motility. However, the effects of these STD agents on semen quality are unclear, as are the effects of herpes simplex virus type 1 and type 2, Neisseria gonorrhoeae, Mycoplasma spp., Treponema pallidum and Trichomonas vaginalis, because few studies have evaluated the influence of these pathogens on male infertility. Chronic or inadequately treated infections seem to be more relevant to infertility than acute infections are, although in many cases the exact aetiological agents remain unknown.
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The regulation of inflammatory pathways and infectious disease of the cervix by seminal fluid. PATHOLOGY RESEARCH INTERNATIONAL 2014; 2014:748740. [PMID: 25180120 PMCID: PMC4144323 DOI: 10.1155/2014/748740] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 07/31/2014] [Indexed: 11/30/2022]
Abstract
The connection between human papillomavirus (HPV) infection and the consequent sequelae which establishes cervical neoplastic transformation and invasive cervical cancer has redefined many aspects of cervical cancer research. However there is still much that we do not know. In particular, the impact of external factors, like seminal fluid in sexually active women, on pathways that regulate cervical inflammation and tumorigenesis, have yet to be fully understood. HPV infection is regarded as the initiating noninflammatory cause of the disease; however emerging evidence points to resident HPV infections as drivers of inflammatory pathways that play important roles in tumorigenesis as well as in the susceptibility to other infections such as human immunodeficiency virus (HIV) infection. Moreover there is emerging evidence to support a role for seminal fluid, in particular, the inflammatory bioactive lipids, and prostaglandins which are present in vast quantities in seminal fluid in regulating pathways that can exacerbate inflammation of the cervix, speed up tumorigenesis, and enhance susceptibility to HIV infection. This review will highlight some of our current knowledge of the role of seminal fluid as a potent driver of inflammatory and tumorigenic pathways in the cervix and will provide some evidence to propose a role for seminal plasma prostaglandins in HIV infection and AIDS-related cancer.
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42
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Ghosh M. Secreted mucosal antimicrobials in the female reproductive tract that are important to consider for HIV prevention. Am J Reprod Immunol 2014; 71:575-88. [PMID: 24754244 DOI: 10.1111/aji.12250] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Accepted: 03/14/2014] [Indexed: 01/13/2023] Open
Abstract
The mucosal microenvironment of the female reproductive tract (FRT) is rich in secreted endogenous antimicrobials that provide the first line of defense against pathogens. This review focuses on the spectrum of secreted antimicrobials found in the FRT that have anti-HIV functions and are regulated by the natural hormonal changes in women's life cycle. Understanding the complex nature of FRT, mucosal microenvironment will enable us to better design therapeutic interventions for women against sexually transmitted pathogens.
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Affiliation(s)
- Mimi Ghosh
- Department of Epidemiology and Biostatistics, Milken Institute School of Public Health, The George Washington University, Washington, DC, USA
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Jallouk AP, Moley KH, Omurtag K, Hu G, Lanza GM, Wickline SA, Hood JL. Nanoparticle incorporation of melittin reduces sperm and vaginal epithelium cytotoxicity. PLoS One 2014; 9:e95411. [PMID: 24748389 PMCID: PMC3991669 DOI: 10.1371/journal.pone.0095411] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 03/27/2014] [Indexed: 11/18/2022] Open
Abstract
Melittin is a cytolytic peptide component of bee venom which rapidly integrates into lipid bilayers and forms pores resulting in osmotic lysis. While the therapeutic utility of free melittin is limited by its cytotoxicity, incorporation of melittin into the lipid shell of a perfluorocarbon nanoparticle has been shown to reduce its toxicity in vivo. Our group has previously demonstrated that perfluorocarbon nanoparticles containing melittin at concentrations <10 µM inhibit HIV infectivity in vitro. In the current study, we assessed the impact of blank and melittin-containing perfluorocarbon nanoparticles on sperm motility and the viability of both sperm and vaginal epithelial cells. We found that free melittin was toxic to sperm and vaginal epithelium at concentrations greater than 2 µM (p<0.001). However, melittin nanoparticles were not cytotoxic to sperm (p = 0.42) or vaginal epithelium (p = 0.48) at an equivalent melittin concentration of 10 µM. Thus, nanoparticle formulation of melittin reduced melittin cytotoxicity fivefold and prevented melittin toxicity at concentrations previously shown to inhibit HIV infectivity. Melittin nanoparticles were toxic to vaginal epithelium at equivalent melittin concentrations ≥20 µM (p<0.001) and were toxic to sperm at equivalent melittin concentrations ≥40 µM (p<0.001). Sperm cytotoxicity was enhanced by targeting of the nanoparticles to the sperm surface antigen sperm adhesion molecule 1. While further testing is needed to determine the extent of cytotoxicity in a more physiologically relevant model system, these results suggest that melittin-containing nanoparticles could form the basis of a virucide that is not toxic to sperm and vaginal epithelium. This virucide would be beneficial for HIV serodiscordant couples seeking to achieve natural pregnancy.
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Affiliation(s)
- Andrew P. Jallouk
- Department of Medicine, Division of Cardiology, Consortium for Translational Research in Advanced Imaging and Nanomedicine, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Kelle H. Moley
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Kenan Omurtag
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Grace Hu
- Department of Medicine, Division of Cardiology, Consortium for Translational Research in Advanced Imaging and Nanomedicine, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Gregory M. Lanza
- Department of Medicine, Division of Cardiology, Consortium for Translational Research in Advanced Imaging and Nanomedicine, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Samuel A. Wickline
- Department of Medicine, Division of Cardiology, Consortium for Translational Research in Advanced Imaging and Nanomedicine, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Joshua L. Hood
- Department of Medicine, Division of Cardiology, Consortium for Translational Research in Advanced Imaging and Nanomedicine, Washington University School of Medicine, St. Louis, Missouri, United States of America
- * E-mail:
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Barreto-de-Souza V, Arakelyan A, Margolis L, Vanpouille C. HIV-1 vaginal transmission: cell-free or cell-associated virus? Am J Reprod Immunol 2014; 71:589-99. [PMID: 24730358 DOI: 10.1111/aji.12240] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Accepted: 02/25/2014] [Indexed: 12/28/2022] Open
Abstract
The vast majority of new HIV infections in male-to-female transmission occurs through semen, where HIV-1 is present in two different forms: as free and as cell-associated virus. In the female lower genital tract, semen mixes with female genital secretions that contain various factors, some of which facilitate or inhibit HIV-1 transmission. Next, HIV-1 crosses the genital epithelia, reaches the regional lymph nodes, and disseminates through the female host. Cervico-vaginal mucosa contains multiple barriers, resulting in a low probability of vaginal transmission. However, in some cases, HIV-1 is able to break these barriers. Although the exact mechanisms of how these barriers function remain unclear, their levels of efficiency against cell-free and cell-associated HIV-1 are different, and both cell-free and cell-associated virions seem to use different strategies to overcome these barriers. Understanding the basic mechanisms of HIV-1 vaginal transmission is required for the development of new antiviral strategies to contain HIV-1 epidemics.
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Affiliation(s)
- Victor Barreto-de-Souza
- Section of Intercellular Interactions, Program in Physical Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA
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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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Mycoplasma genitalium promotes epithelial crossing and peripheral blood mononuclear cell infection by HIV-1. Int J Infect Dis 2014; 23:31-8. [PMID: 24661929 DOI: 10.1016/j.ijid.2013.11.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 10/18/2013] [Accepted: 11/30/2013] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Mycoplasma genitalium co-infection in HIV-infected individuals has been reported to increase the shedding of HIV in the urogenital region of females. To better understand this relationship, we investigated the influence of M. genitalium on the transmission and replication of HIV using an in vitro model. METHODS The Transwell co-culture system was employed to assess the crossing of an endocervical cell barrier by HIV-1. Immunocytochemistry and confocal microscopy were used to assess the distribution of the nectin-1 molecule on M. genitalium-infected epithelial cells of the End1/E6E7 endocervical cell line, grown as monolayers in the insert wells. Peripheral blood mononuclear cells (PBMC) were cultured in the bottom wells to assess the effects of M. genitalium, passing through the semipermeable culturing membrane, on subsequent HIV infection of susceptible target cells. RESULTS Infection of the endocervical cells with the adhesion-positive M. genitalium G37 strain (wild-type) significantly elevated the passage of HIV across the epithelial cell barrier relative to HIV transfer across endocervical cells infected with the adhesion-negative M. genitalium JB1 strain. Immunostaining of the M. genitalium-G37-infected epithelial cells disclosed capping and internalization of the junctional regulatory protein nectin-1, in association with reduced transepithelial resistance (TER) in the cell monolayer. When PBMC were cultured beneath insert wells containing M. genitalium-G37-infected epithelial cell monolayers, we observed significantly enhanced infectivity and replication of HIV added afterward to the cultures. CONCLUSIONS M. genitalium influences events on both sides of a cultured mucosal epithelial monolayer: (1) by infecting the epithelial cells and reducing the integrity of the barrier itself, and (2) by activating HIV target cells below it, thereby promoting HIV infection and progeny virus production.
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47
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Ferreira VH, Kafka JK, Kaushic C. Influence of common mucosal co-factors on HIV infection in the female genital tract. Am J Reprod Immunol 2014; 71:543-54. [PMID: 24617528 DOI: 10.1111/aji.12221] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Accepted: 01/28/2014] [Indexed: 12/14/2022] Open
Abstract
Women constitute almost half of HIV-infected population globally, and the female genital tract (FGT) accounts for approximately 40% of all new HIV infections worldwide. The FGT is composed of upper and lower parts, distinct in their morphological and functional characteristics. Co-factors in the genital microenvironment, such as presence of hormones, semen, and other sexually transmitted infections, can facilitate or deter HIV infection and play a critical role in determining susceptibility to HIV. In this review, we examine some of these co-factors and their potential influence. Presence of physical and chemical barriers such as epithelial tight junctions, mucus, and anti-microbial peptides can actively block and inhibit viral replication, presenting a significant deterrent to HIV. Upon exposure, HIV and other pathogens first encounter the genital epithelium: cells that express a wide repertoire of pattern recognition receptors that can recognize and directly initiate innate immune responses. These and other interactions in the genital tract can lead to direct and indirect inflammation and enhance the number of local target cells, immune activation, and microbial translocation, all of which promote HIV infection and replication. Better understanding of the dynamics of HIV transmission in the female genital tract would be invaluable for improving the design of prophylactic strategies against HIV.
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Affiliation(s)
- Victor H Ferreira
- Department of Pathology and Molecular Medicine, McMaster Immunology Research Centre, Michael G. DeGroote Institute of Infectious Diseases Research, McMaster University, Hamilton, ON, Canada
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Merino O, Aguagüiña WE, Esponda P, Risopatrón J, Isachenko E, Isachenko V, Sánchez R. Protective effect of butylated hydroxytoluene on sperm function in human spermatozoa cryopreserved by vitrification technique. Andrologia 2014; 47:186-93. [DOI: 10.1111/and.12246] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/29/2013] [Indexed: 11/29/2022] Open
Affiliation(s)
- O. Merino
- BIOREN-CEBIOR; Universidad de La Frontera; Temuco Chile
| | | | - P. Esponda
- BIOREN-CEBIOR; Universidad de La Frontera; Temuco Chile
| | - J. Risopatrón
- BIOREN-CEBIOR; Universidad de La Frontera; Temuco Chile
- Department of Basic Sciences; Faculty of Medicine; Universidad de La Frontera; Temuco Chile
| | - E. Isachenko
- Departments of Obstetrics and Gynecology; University of Cologne; Cologne Germany
| | - V. Isachenko
- Departments of Obstetrics and Gynecology; University of Cologne; Cologne Germany
| | - R. Sánchez
- BIOREN-CEBIOR; Universidad de La Frontera; Temuco Chile
- Department of Preclinical Sciences; Faculty of Medicine; Universidad de La Frontera; Temuco Chile
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Connell BJ, Lortat-Jacob H. Human immunodeficiency virus and heparan sulfate: from attachment to entry inhibition. Front Immunol 2013; 4:385. [PMID: 24312095 PMCID: PMC3834540 DOI: 10.3389/fimmu.2013.00385] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 11/05/2013] [Indexed: 11/13/2022] Open
Abstract
By targeting cells that provide protection against infection, HIV-1 causes acquired immunodeficiency syndrome. Infection starts when gp120, the viral envelope glycoprotein, binds to CD4 and to a chemokine receptor usually CCR5 or CXCR4. As many microorganisms, HIV-1 also interacts with heparan sulfate (HS), a complex group of cell surface associated anionic polysaccharides. It has been thought that this binding, occurring at a step prior to CD4 recognition, increases infectivity by pre-concentrating the virion particles at the cell surface. Early work, dating from before the identification of CCR5 and CXCR4, showed that a variety of HS mimetics bind to the gp120 V3 loop through electrostatic interactions, compete with cell surface associated HS to bind the virus and consequently, neutralize the infectivity of a number of T-cell line-adapted HIV-1 strains. However, progress made to better understand HIV-1 attachment and entry, coupled with the recent identification of additional gp120 regions mediating HS recognition, have considerably modified this view. Firstly, the V3 loop from CXCR4-using viruses is much more positively charged compared to those using CCR5. HS inhibition of cell attachment is thus restricted to CXCR4-using viruses (such as T-cell line-adapted HIV-1). Secondly, studies aiming at characterizing the gp120/HS complex revealed that HS binding was far more complex than previously thought: in addition to the V3 loop of CXCR4 tropic gp120, HS interacts with several other cryptic areas of the protein, which can be induced upon CD4 binding, and are conserved amongst CCR5 and CXCR4 viruses. In view of these data, this review will detail the present knowledge on HS binding to HIV-1, with regards to attachment and entry processes. It will discuss the perspective of targeting the gp120 co-receptor binding site with HS mimetic compounds, a strategy that recently gave rise to entry inhibitors that work in the low nanomolar range, independently of co-receptor usage.
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Affiliation(s)
- Bridgette J Connell
- University of Grenoble Alpes, Institut de Biologie Structurale , Grenoble , France ; Centre National de la Recherche Scientifique, Institut de Biologie Structurale , Grenoble , France ; Commissariat à l'Énergie Atomique, Direction des Sciences du Vivant, Institut de Biologie Structurale , Grenoble , France
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Garolla A, Pizzol D, Bertoldo A, Menegazzo M, Barzon L, Foresta C. Sperm viral infection and male infertility: focus on HBV, HCV, HIV, HPV, HSV, HCMV, and AAV. J Reprod Immunol 2013; 100:20-9. [DOI: 10.1016/j.jri.2013.03.004] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 03/20/2013] [Accepted: 03/20/2013] [Indexed: 12/09/2022]
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