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Pordanjani PM, Bolhassani A, Pouriayevali MH, Milani A, Rezaei F. Engineered dendritic cells-derived exosomes harboring HIV-1 Nef mut-Tat fusion protein and heat shock protein 70: A promising HIV-1 safe vaccine candidate. Int J Biol Macromol 2024; 270:132236. [PMID: 38768924 DOI: 10.1016/j.ijbiomac.2024.132236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 05/04/2024] [Accepted: 05/07/2024] [Indexed: 05/22/2024]
Abstract
Antigen presenting cells (APCs)-derived exosomes are nano-vesicles that can induce antigen-specific T cell responses, and possess therapeutic effects in clinical settings. Moreover, dendritic cells (DCs)-based vaccines have been developed to combat human immunodeficiency virus-1 (HIV-1) infection in preclinical and clinical trials. We investigated the immunostimulatory effects (B- and T-cells activities) of DCs- and exosomes-based vaccine constructs harboring HIV-1 Nefmut-Tat fusion protein as an antigen candidate and heat shock protein 70 (Hsp70) as an adjuvant in mice. The modified DCs and engineered exosomes harboring Nefmut-Tat protein or Hsp70 were prepared using lentiviral vectors compared to electroporation, characterized and evaluated by in vitro and in vivo immunological tests. Our data indicated that the engineered exosomes induced high levels of total IgG, IgG2a, IFN-γ, TNF-α and Granzyme B. Moreover, co-injection of exosomes harboring Hsp70 could significantly increase the secretion of antibodies, cytokines and Granzyme B. The highest levels of IFN-γ and TNF-α were observed in exosomes harboring Nefmut-Tat combined with exosomes harboring Hsp70 (Exo-Nefmut-Tat + Exo-Hsp70) regimen after single-cycle replicable (SCR) HIV-1 exposure. Generally, Exo-Nefmut-Tat + Exo-Hsp70 regimen can be considered as a promising safe vaccine candidate due to high T-cells (Th1 and CTL) activity and its maintenance against SCR HIV-1 exposure.
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Affiliation(s)
| | - Azam Bolhassani
- Department of Hepatitis and AIDS, Pasteur Institute of Iran, Tehran, Iran.
| | - Mohammad Hassan Pouriayevali
- Department of Arboviruses and Viral Hemorrhagic Fevers (National Reference Laboratory), Pasteur Institute of Iran, Tehran, Iran
| | - Alireza Milani
- Department of Hepatitis and AIDS, Pasteur Institute of Iran, Tehran, Iran; Iranian Comprehensive Hemophilia Care Center, Tehran, Iran
| | - Fatemeh Rezaei
- Department of Hepatitis and AIDS, Pasteur Institute of Iran, Tehran, Iran
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2
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Tang Z, Lu Y, Dong JL, Wu W, Li J. The extracellular vesicles in HIV infection and progression: mechanisms, and theranostic implications. Front Bioeng Biotechnol 2024; 12:1376455. [PMID: 38655385 PMCID: PMC11035885 DOI: 10.3389/fbioe.2024.1376455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 03/11/2024] [Indexed: 04/26/2024] Open
Abstract
Extracellular vesicles (EVs), these minute yet mighty cellular messengers are redefining our understanding of a spectrum of diseases, from cancer to cardiovascular ailments, neurodegenerative disorders, and even infectious diseases like HIV. Central to cellular communication, EVs emerge as both potent facilitators and insightful biomarkers in immune response and the trajectory of disease progression. This review ventures deep into the realm of EVs in HIV-unraveling their pivotal roles in diagnosis, disease mechanism unravelling, and therapeutic innovation. With a focus on HIV, we will highlights the transformative potential of EVs in both diagnosing and treating this formidable virus. Unveiling the intricate dance between EVs and HIV, the review aims to shed light on novel therapeutic strategies that could significantly benefit HIV therapy, potentially even leading to the eradication of HIV.
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Affiliation(s)
- Zhen Tang
- AIDS Prevention and Control Center of Yichang Third People’s Hospital, Third People’s Hospital Affiliated to Sanxia University, Yichang, Hubei, China
| | - Yao Lu
- Yichang Changyang County People’s Hospital, Yichang, Hubei, China
| | - Jiu-Long Dong
- AIDS Prevention and Control Center of Yichang Third People’s Hospital, Third People’s Hospital Affiliated to Sanxia University, Yichang, Hubei, China
| | - Wen Wu
- AIDS Prevention and Control Center of Yichang Third People’s Hospital, Third People’s Hospital Affiliated to Sanxia University, Yichang, Hubei, China
| | - Jian Li
- AIDS Prevention and Control Center of Yichang Third People’s Hospital, Third People’s Hospital Affiliated to Sanxia University, Yichang, Hubei, China
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3
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Chang H, Chen E, Hu Y, Wu L, Deng L, Ye‐Lehmann S, Mao X, Zhu T, Liu J, Chen C. Extracellular Vesicles: The Invisible Heroes and Villains of COVID-19 Central Neuropathology. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305554. [PMID: 38143270 PMCID: PMC10933635 DOI: 10.1002/advs.202305554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 11/18/2023] [Indexed: 12/26/2023]
Abstract
Acknowledging the neurological symptoms of COVID-19 and the long-lasting neurological damage even after the epidemic ends are common, necessitating ongoing vigilance. Initial investigations suggest that extracellular vesicles (EVs), which assist in the evasion of the host's immune response and achieve immune evasion in SARS-CoV-2 systemic spreading, contribute to the virus's attack on the central nervous system (CNS). The pro-inflammatory, pro-coagulant, and immunomodulatory properties of EVs contents may directly drive neuroinflammation and cerebral thrombosis in COVID-19. Additionally, EVs have attracted attention as potential candidates for targeted therapy in COVID-19 due to their innate homing properties, low immunogenicity, and ability to cross the blood-brain barrier (BBB) freely. Mesenchymal stromal/stem cell (MSCs) secreted EVs are widely applied and evaluated in patients with COVID-19 for their therapeutic effect, considering the limited antiviral treatment. This review summarizes the involvement of EVs in COVID-19 neuropathology as carriers of SARS-CoV-2 or other pathogenic contents, as predictors of COVID-19 neuropathology by transporting brain-derived substances, and as therapeutic agents by delivering biotherapeutic substances or drugs. Understanding the diverse roles of EVs in the neuropathological aspects of COVID-19 provides a comprehensive framework for developing, treating, and preventing central neuropathology and the severe consequences associated with the disease.
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Affiliation(s)
- Haiqing Chang
- Department of AnesthesiologyWest China HospitalSichuan UniversityLaboratory of Anesthesia and Critical Care MedicineNational‐Local Joint Engineering Research Centre of Translational Medicine of AnesthesiologyWest China HospitalSichuan UniversityChengduSichuan610041China
| | - Erya Chen
- Department of AnesthesiologyWest China HospitalSichuan UniversityLaboratory of Anesthesia and Critical Care MedicineNational‐Local Joint Engineering Research Centre of Translational Medicine of AnesthesiologyWest China HospitalSichuan UniversityChengduSichuan610041China
| | - Yi Hu
- Department of Cardiology, Honghui hospitalXi'an Jiaotong UniversityXi'an710049China
| | - Lining Wu
- Department of AnesthesiologyWest China HospitalSichuan UniversityLaboratory of Anesthesia and Critical Care MedicineNational‐Local Joint Engineering Research Centre of Translational Medicine of AnesthesiologyWest China HospitalSichuan UniversityChengduSichuan610041China
| | - Liyun Deng
- Department of AnesthesiologyWest China HospitalSichuan UniversityLaboratory of Anesthesia and Critical Care MedicineNational‐Local Joint Engineering Research Centre of Translational Medicine of AnesthesiologyWest China HospitalSichuan UniversityChengduSichuan610041China
| | - Shixin Ye‐Lehmann
- Diseases and Hormones of the Nervous System University of Paris‐Scalay Bicêtre Hosptial BâtGrégory Pincus 80 Rue du Gal Leclerc, CedexLe Kremlin Bicêtre94276France
| | - Xiaobo Mao
- Department of NeurologyInstitute of Cell EngineeringSchool of MedicineJohns Hopkins UniversityBaltimoreMD21218USA
| | - Tao Zhu
- Department of AnesthesiologyWest China HospitalSichuan UniversityLaboratory of Anesthesia and Critical Care MedicineNational‐Local Joint Engineering Research Centre of Translational Medicine of AnesthesiologyWest China HospitalSichuan UniversityChengduSichuan610041China
| | - Jin Liu
- Department of AnesthesiologyWest China HospitalSichuan UniversityLaboratory of Anesthesia and Critical Care MedicineNational‐Local Joint Engineering Research Centre of Translational Medicine of AnesthesiologyWest China HospitalSichuan UniversityChengduSichuan610041China
| | - Chan Chen
- Department of AnesthesiologyWest China HospitalSichuan UniversityLaboratory of Anesthesia and Critical Care MedicineNational‐Local Joint Engineering Research Centre of Translational Medicine of AnesthesiologyWest China HospitalSichuan UniversityChengduSichuan610041China
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Siew JJ, Chen HM, Chiu FL, Lee CW, Chang YM, Chen HL, Nguyen TNA, Liao HT, Liu M, Hagar HT, Sun YC, Lai HL, Kuo MH, Blum D, Buée L, Jin LW, Chen SY, Ko TM, Huang JR, Kuo HC, Liu FT, Chern Y. Galectin-3 aggravates microglial activation and tau transmission in tauopathy. J Clin Invest 2024; 134:e165523. [PMID: 37988169 PMCID: PMC10786694 DOI: 10.1172/jci165523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 11/16/2023] [Indexed: 11/23/2023] Open
Abstract
Alzheimer's disease is characterized by the accumulation of amyloid-β plaques, aggregation of hyperphosphorylated tau (pTau), and microglia activation. Galectin-3 (Gal3) is a β-galactoside-binding protein that has been implicated in amyloid pathology. Its role in tauopathy remains enigmatic. Here, we showed that Gal3 was upregulated in the microglia of humans and mice with tauopathy. pTau triggered the release of Gal3 from human induced pluripotent stem cell-derived microglia in both its free and extracellular vesicular-associated (EV-associated) forms. Both forms of Gal3 increased the accumulation of pathogenic tau in recipient cells. Binding of Gal3 to pTau greatly enhanced tau fibrillation. Besides Gal3, pTau was sorted into EVs for transmission. Moreover, pTau markedly enhanced the number of EVs released by iMGL in a Gal3-dependent manner, suggesting a role of Gal3 in biogenesis of EVs. Single-cell RNA-Seq analysis of the hippocampus of a mouse model of tauopathy (THY-Tau22) revealed a group of pathogenic tau-evoked, Gal3-associated microglia with altered cellular machineries implicated in neurodegeneration, including enhanced immune and inflammatory responses. Genetic removal of Gal3 in THY-Tau22 mice suppressed microglia activation, reduced the level of pTau and synaptic loss in neurons, and rescued memory impairment. Collectively, Gal3 is a potential therapeutic target for tauopathy.
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Affiliation(s)
| | | | - Feng-Lan Chiu
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan
| | | | | | | | | | | | - Mengyu Liu
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan, USA
| | - Hsiao-Tien Hagar
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan, USA
| | - Yung-Chen Sun
- Institute of Biochemistry and Molecular Biology, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | | | - Min-Hao Kuo
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan, USA
| | - David Blum
- Univ. Lille, Inserm, CHU Lille, U1172 - LilNCog - Lille Neuroscience & Cognition, Lille, France
- Alzheimer & Tauopathies, LabEx DISTALZ, LiCEND, Lille, France
| | - Luc Buée
- Univ. Lille, Inserm, CHU Lille, U1172 - LilNCog - Lille Neuroscience & Cognition, Lille, France
- Alzheimer & Tauopathies, LabEx DISTALZ, LiCEND, Lille, France
| | - Lee-Way Jin
- Department of Pathology and Laboratory Medicine, University of California Davis, Sacramento, California, USA
| | | | - Tai-Ming Ko
- Institute of Biomedical Sciences
- Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Jie-Rong Huang
- Institute of Biochemistry and Molecular Biology, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Hung-Chih Kuo
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan
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Nikitopoulou I, Vassiliou AG, Athanasiou N, Jahaj E, Akinosoglou K, Dimopoulou I, Orfanos SE, Dimakopoulou V, Schinas G, Tzouvelekis A, Aidinis V, Kotanidou A. Increased Levels of Galectin-3 in Critical COVID-19. Int J Mol Sci 2023; 24:15833. [PMID: 37958814 PMCID: PMC10650562 DOI: 10.3390/ijms242115833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 10/24/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023] Open
Abstract
Severe COVID-19 is related to hyperinflammation and multiple organ injury, including respiratory failure, thus requiring intensive care unit (ICU) admission. Galectin-3, a carbohydrate-binding protein exhibiting pleiotropic effects, has been previously recognized to participate in inflammation, the immune response to infections and fibrosis. The aim of this study was to evaluate the relationship between galectin-3 and the clinical severity of COVID-19, as well as assess the prognostic accuracy of galectin-3 for the probability of ICU mortality. The study included 235 COVID-19 patients with active disease, treated in two different Greek hospitals in total. Our results showed that median galectin-3 serum levels on admission were significantly increased in critical COVID-19 patients (7.2 ng/mL), as compared to the median levels of patients with less severe disease (2.9 ng/mL, p = 0.003). Galectin-3 levels of the non-survivors hospitalized in the ICU were significantly higher than those of the survivors (median 9.1 ng/mL versus 5.8 ng/mL, p = 0.001). The prognostic accuracy of galectin-3 for the probability of ICU mortality was studied with a receiver operating characteristic (ROC) curve and a multivariate analysis further demonstrated that galectin-3 concentration at hospital admission could be assumed as an independent risk factor associated with ICU mortality. Our results were validated with galectin-3 measurements in a second patient cohort from a different Greek university hospital. Our results, apart from strongly confirming and advancing previous knowledge with two patient cohorts, explore the possibility of predicting ICU mortality, which could provide useful information to clinicians. Therefore, galectin-3 seems to establish its involvement in the prognosis of hospitalized COVID-19 patients, suggesting that it could serve as a promising biomarker in critical COVID-19.
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Affiliation(s)
- Ioanna Nikitopoulou
- 1st Department of Critical Care Medicine & Pulmonary Services, School of Medicine, National and Kapodistrian University of Athens, Evangelismos Hospital, 10676 Athens, Greece; (I.N.); (A.G.V.); (N.A.); (E.J.); (I.D.); (S.E.O.)
| | - Alice G. Vassiliou
- 1st Department of Critical Care Medicine & Pulmonary Services, School of Medicine, National and Kapodistrian University of Athens, Evangelismos Hospital, 10676 Athens, Greece; (I.N.); (A.G.V.); (N.A.); (E.J.); (I.D.); (S.E.O.)
| | - Nikolaos Athanasiou
- 1st Department of Critical Care Medicine & Pulmonary Services, School of Medicine, National and Kapodistrian University of Athens, Evangelismos Hospital, 10676 Athens, Greece; (I.N.); (A.G.V.); (N.A.); (E.J.); (I.D.); (S.E.O.)
| | - Edison Jahaj
- 1st Department of Critical Care Medicine & Pulmonary Services, School of Medicine, National and Kapodistrian University of Athens, Evangelismos Hospital, 10676 Athens, Greece; (I.N.); (A.G.V.); (N.A.); (E.J.); (I.D.); (S.E.O.)
| | - Karolina Akinosoglou
- Division of Internal Medicine, University General Hospital of Patras, 26504 Patras, Greece; (K.A.); (V.D.); (G.S.)
| | - Ioanna Dimopoulou
- 1st Department of Critical Care Medicine & Pulmonary Services, School of Medicine, National and Kapodistrian University of Athens, Evangelismos Hospital, 10676 Athens, Greece; (I.N.); (A.G.V.); (N.A.); (E.J.); (I.D.); (S.E.O.)
| | - Stylianos E. Orfanos
- 1st Department of Critical Care Medicine & Pulmonary Services, School of Medicine, National and Kapodistrian University of Athens, Evangelismos Hospital, 10676 Athens, Greece; (I.N.); (A.G.V.); (N.A.); (E.J.); (I.D.); (S.E.O.)
| | - Vasiliki Dimakopoulou
- Division of Internal Medicine, University General Hospital of Patras, 26504 Patras, Greece; (K.A.); (V.D.); (G.S.)
| | - Georgios Schinas
- Division of Internal Medicine, University General Hospital of Patras, 26504 Patras, Greece; (K.A.); (V.D.); (G.S.)
| | - Argyrios Tzouvelekis
- Department of Respiratory Medicine, University General Hospital of Patras, 26504 Patras, Greece;
| | - Vassilis Aidinis
- Institute of Fundamental Biomedical Research, Biomedical Sciences Research Center Alexander Fleming, 16672 Athens, Greece;
| | - Anastasia Kotanidou
- 1st Department of Critical Care Medicine & Pulmonary Services, School of Medicine, National and Kapodistrian University of Athens, Evangelismos Hospital, 10676 Athens, Greece; (I.N.); (A.G.V.); (N.A.); (E.J.); (I.D.); (S.E.O.)
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Habib A, Liang Y, Zhu N. Exosomes multifunctional roles in HIV-1: insight into the immune regulation, vaccine development and current progress in delivery system. Front Immunol 2023; 14:1249133. [PMID: 37965312 PMCID: PMC10642161 DOI: 10.3389/fimmu.2023.1249133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 10/17/2023] [Indexed: 11/16/2023] Open
Abstract
Human Immunodeficiency Virus (HIV-1) is known to establish a persistent latent infection. The use of combination antiretroviral therapy (cART) can effectively reduce the viral load, but the treatment can be costly and may lead to the development of drug resistance and life-shortening side effects. It is important to develop an ideal and safer in vivo target therapy that will effectively block viral replication and expression in the body. Exosomes have recently emerged as a promising drug delivery vehicle due to their low immunogenicity, nanoscale size (30-150nm), high biocompatibility, and stability in the targeted area. Exosomes, which are genetically produced by different types of cells such as dendritic cells, neurons, T and B cells, epithelial cells, tumor cells, and mast cells, are designed for efficient delivery to targeted cells. In this article, we review and highlight recent developments in the strategy and application of exosome-based HIV-1 vaccines. We also discuss the use of exosome-based antigen delivery systems in vaccine development. HIV-1 antigen can be loaded into exosomes, and this modified cargo can be delivered to target cells or tissues through different loading approaches. This review also discusses the immunological prospects of exosomes and their role as biomarkers in disease progression. However, there are significant administrative and technological obstacles that need to be overcome to fully harness the potential of exosome drug delivery systems.
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Affiliation(s)
- Arslan Habib
- Laboratory of Molecular Immunology, State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China
| | - Yulai Liang
- Laboratory of Molecular Immunology, State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China
| | - Naishuo Zhu
- Laboratory of Molecular Immunology, State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China
- Institute of Biomedical Sciences, School of Life Sciences, Fudan University, Shanghai, China
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Stojanovic BS, Stojanovic B, Milovanovic J, Arsenijević A, Dimitrijevic Stojanovic M, Arsenijevic N, Milovanovic M. The Pivotal Role of Galectin-3 in Viral Infection: A Multifaceted Player in Host-Pathogen Interactions. Int J Mol Sci 2023; 24:ijms24119617. [PMID: 37298569 DOI: 10.3390/ijms24119617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 05/29/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023] Open
Abstract
Galectin-3 (Gal-3), a beta-galactoside-binding lectin, plays a pivotal role in various cellular processes, including immune responses, inflammation, and cancer progression. This comprehensive review aims to elucidate the multifaceted functions of Gal-3, starting with its crucial involvement in viral entry through facilitating viral attachment and catalyzing internalization. Furthermore, Gal-3 assumes significant roles in modulating immune responses, encompassing the activation and recruitment of immune cells, regulation of immune signaling pathways, and orchestration of cellular processes such as apoptosis and autophagy. The impact of Gal-3 extends to the viral life cycle, encompassing critical phases such as replication, assembly, and release. Notably, Gal-3 also contributes to viral pathogenesis, demonstrating involvement in tissue damage, inflammation, and viral persistence and latency elements. A detailed examination of specific viral diseases, including SARS-CoV-2, HIV, and influenza A, underscores the intricate role of Gal-3 in modulating immune responses and facilitating viral adherence and entry. Moreover, the potential of Gal-3 as a biomarker for disease severity, particularly in COVID-19, is considered. Gaining further insight into the mechanisms and roles of Gal-3 in these infections could pave the way for the development of innovative treatment and prevention options for a wide range of viral diseases.
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Affiliation(s)
- Bojana S Stojanovic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
- Department of Pathophysiology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Bojan Stojanovic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
- Department of Surgery, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Jelena Milovanovic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
- Department of Histology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Aleksandar Arsenijević
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Milica Dimitrijevic Stojanovic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
- Department of Pathology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Nebojsa Arsenijevic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Marija Milovanovic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
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Sigamani A, Mayo KH, Miller MC, Chen-Walden H, Reddy S, Platt D. An Oral Galectin Inhibitor in COVID-19—A Phase II Randomized Controlled Trial. Vaccines (Basel) 2023; 11:vaccines11040731. [PMID: 37112643 PMCID: PMC10140888 DOI: 10.3390/vaccines11040731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/14/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023] Open
Abstract
Background: SARS-CoV-2 vaccines play an important role in reducing disease severity, hospitalization, and death, although they failed to prevent the transmission of SARS-CoV-2 variants. Therefore, an effective inhibitor of galectin-3 (Gal-3) could be used to treat and prevent the transmission of COVID-19. ProLectin-M (PL-M), a Gal-3 antagonist, was shown to interact with Gal-3 and thereby prevent cellular entry of SARS-CoV-2 in previous studies. Aim: The present study aimed to further evaluate the therapeutic effect of PL-M tablets in 34 subjects with COVID-19. Methods: The efficacy of PL-M was evaluated in a randomized, double-blind, placebo-controlled clinical study in patients with mild to moderately severe COVID-19. Primary endpoints included changes in the absolute RT-PCR Ct values of the nucleocapsid and open reading frame (ORF) genes from baseline to days 3 and 7. The incidence of adverse events, changes in blood biochemistry, inflammatory biomarkers, and levels of antibodies against COVID-19 were also evaluated as part of the safety evaluation. Results: PL-M treatment significantly (p = 0.001) increased RT-PCR cycle counts for N and ORF genes on days 3 (Ct values 32.09 ± 2.39 and 30.69 ± 3.38, respectively) and 7 (Ct values 34.91 ± 0.39 and 34.85 ± 0.61, respectively) compared to a placebo treatment. On day 3, 14 subjects in the PL-M group had cycle counts for the N gene above the cut-off value of 29 (target cycle count 29), whereas on day 7, all subjects had cycle counts above the cut-off value. Ct values in placebo subjects were consistently less than 29, and no placebo subjects were RT-PCR-negative until day 7. Most of the symptoms disappeared completely after receiving PL-M treatment for 7 days in more patients compared to the placebo group. Conclusion: PL-M is safe and effective for clinical use in reducing viral loads and promoting rapid viral clearance in COVID-19 patients by inhibiting SARS-CoV-2 entry into cells through the inhibition of Gal-3.
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Affiliation(s)
- Alben Sigamani
- Carmel Research Consultancy Pvt. Ltd., Bengaluru 560025, Karnataka, India
- Correspondence: ; Tel.: +9188-8443-1444
| | - Kevin H. Mayo
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, 6-155 Jackson Hall, 321 Church Street, Minneapolis, MN 55455, USA
| | - Michelle C. Miller
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, 6-155 Jackson Hall, 321 Church Street, Minneapolis, MN 55455, USA
| | - Hana Chen-Walden
- Pharmalectin India Pvt. Ltd., Rangareddy 500039, Telangana, India
| | - Surendar Reddy
- Department of Pulmonology, ESIC Medical College and Hospital, Sanath Nagar, Hyderabad 500038, Telangana, India
| | - David Platt
- Pharmalectin India Pvt. Ltd., Rangareddy 500039, Telangana, India
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9
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Yang ML, Chen YC, Wang CT, Chong HE, Chung NH, Leu CH, Liu FT, Lai MMC, Ling P, Wu CL, Shiau AL. Upregulation of galectin-3 in influenza A virus infection promotes viral RNA synthesis through its association with viral PA protein. J Biomed Sci 2023; 30:14. [PMID: 36823664 PMCID: PMC9948428 DOI: 10.1186/s12929-023-00901-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 01/11/2023] [Indexed: 02/25/2023] Open
Abstract
BACKGROUND Influenza is one of the most important viral infections globally. Viral RNA-dependent RNA polymerase (RdRp) consists of the PA, PB1, and PB2 subunits, and the amino acid residues of each subunit are highly conserved among influenza A virus (IAV) strains. Due to the high mutation rate and emergence of drug resistance, new antiviral strategies are needed. Host cell factors are involved in the transcription and replication of influenza virus. Here, we investigated the role of galectin-3, a member of the β-galactoside-binding animal lectin family, in the life cycle of IAV infection in vitro and in mice. METHODS We used galectin-3 knockout and wild-type mice and cells to study the intracellular role of galectin-3 in influenza pathogenesis. Body weight and survival time of IAV-infected mice were analyzed, and viral production in mouse macrophages and lung fibroblasts was examined. Overexpression and knockdown of galectin-3 in A549 human lung epithelial cells were exploited to assess viral entry, viral ribonucleoprotein (vRNP) import/export, transcription, replication, virion production, as well as interactions between galectin-3 and viral proteins by immunoblotting, immunofluorescence, co-immunoprecipitation, RT-qPCR, minireplicon, and plaque assays. We also employed recombinant galectin-3 proteins to identify specific step(s) of the viral life cycle that was affected by exogenously added galectin-3 in A549 cells. RESULTS Galectin-3 levels were increased in the bronchoalveolar lavage fluid and lungs of IAV-infected mice. There was a positive correlation between galectin-3 levels and viral loads. Notably, galectin-3 knockout mice were resistant to IAV infection. Knockdown of galectin-3 significantly reduced the production of viral proteins and virions in A549 cells. While intracellular galectin-3 did not affect viral entry, it increased vRNP nuclear import, RdRp activity, and viral transcription and replication, which were associated with the interaction of galectin-3 with viral PA subunit. Galectin-3 enhanced the interaction between viral PA and PB1 proteins. Moreover, exogenously added recombinant galectin-3 proteins also enhanced viral adsorption and promoted IAV infection in A549 cells. CONCLUSION We demonstrate that galectin-3 enhances viral infection through increases in vRNP nuclear import and RdRp activity, thereby facilitating viral transcription and replication. Our findings also identify galectin-3 as a potential therapeutic target for influenza.
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Affiliation(s)
- Mei-Lin Yang
- grid.64523.360000 0004 0532 3255Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, 1, University Road, Tainan, 701401 Taiwan ,grid.413878.10000 0004 0572 9327Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Yi-Cheng Chen
- grid.64523.360000 0004 0532 3255Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, 1, University Road, Tainan, 701401 Taiwan
| | - Chung-Teng Wang
- grid.64523.360000 0004 0532 3255Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, 1, University Road, Tainan, 701401 Taiwan
| | - Hao-Earn Chong
- grid.64523.360000 0004 0532 3255Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, 1, University Road, Tainan, 701401 Taiwan
| | - Nai-Hui Chung
- grid.64523.360000 0004 0532 3255Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, 1, University Road, Tainan, 701401 Taiwan
| | - Chia-Hsing Leu
- grid.64523.360000 0004 0532 3255Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, 1, University Road, Tainan, 701401 Taiwan
| | - Fu-Tong Liu
- grid.28665.3f0000 0001 2287 1366Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Michael M. C. Lai
- grid.254145.30000 0001 0083 6092Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan ,grid.28665.3f0000 0001 2287 1366Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan
| | - Pin Ling
- grid.64523.360000 0004 0532 3255Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, 1, University Road, Tainan, 701401 Taiwan
| | - Chao-Liang Wu
- Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan. .,Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, 1, University Road, Tainan, 701401, Taiwan.
| | - Ai-Li Shiau
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, 1, University Road, Tainan, 701401, Taiwan. .,Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan.
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The Association of Human Astrovirus with Extracellular Vesicles Facilitates Cell Infection and Protects the Virus from Neutralizing Antibodies. J Virol 2022; 96:e0084822. [PMID: 35762754 PMCID: PMC9327681 DOI: 10.1128/jvi.00848-22] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Viral gastroenteritis has a global distribution and represents a high risk for vulnerable population and children under 5 years due to acute diarrhea, fever and dehydration. Human astroviruses (HAstV) have been identified as the third most important cause of viral gastroenteritis in pediatric and immunocompromised patients. Furthermore, HAstV has been reported in biopsies taken from patients with encephalitis, meningitis and acute respiratory infection, yet it is not clear how the virus reaches these organs. In this work we have tested the possibility that the released astrovirus particles could be associated with extracellular vesicles. Comparison between vesicles purified from HAstV Yuc8 infected and mock-infected cells showed that infection enhances production of vesicles larger than 150 nm. These vesicles contain CD63 and Alix, two markers of vesicular structures. Almost 70% of the extracellular virus present in clarified supernatant at 18 h postinfection was found associated with vesicular membranes, and this association facilitates cell infection in the absence of trypsin activation and protects virions from neutralizing antibodies. Our findings suggest a new pathway for HAstV spread and might represent an explanation for the extra-intestinal presence of some astrovirus strains. IMPORTANCE Astroviruses are an important cause of diarrhea in vulnerable population, particularly children; recently some reports have found these viruses in extra-intestinal organs, including the central nervous system, causing unexpected clinical disease. In this work, we found that human astrovirus strain Yuc8 associates with extracellular vesicles, possibly during or after their cell egress. The association with vesicles doubled astrovirus infectivity in less susceptible cells and rendered virus particles insensitive to neutralization by antibodies. These data suggest that extracellular vesicles could represent a novel pathway for astrovirus to disseminate outside the gastrointestinal tract.
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11
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HDAC inhibitor and proteasome inhibitor induce cleavage and exosome-mediated secretion of HSP90 in mouse pluripotent stem cells. Biochem Biophys Res Commun 2022; 620:29-34. [DOI: 10.1016/j.bbrc.2022.06.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/16/2022] [Accepted: 06/19/2022] [Indexed: 11/22/2022]
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12
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Complexities of JC Polyomavirus Receptor-Dependent and -Independent Mechanisms of Infection. Viruses 2022; 14:v14061130. [PMID: 35746603 PMCID: PMC9228512 DOI: 10.3390/v14061130] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 02/05/2023] Open
Abstract
JC polyomavirus (JCPyV) is a small non-enveloped virus that establishes lifelong, persistent infection in most of the adult population. Immune-competent patients are generally asymptomatic, but immune-compromised and immune-suppressed patients are at risk for the neurodegenerative disease progressive multifocal leukoencephalopathy (PML). Studies with purified JCPyV found it undergoes receptor-dependent infectious entry requiring both lactoseries tetrasaccharide C (LSTc) attachment and 5-hydroxytryptamine type 2 entry receptors. Subsequent work discovered the major targets of JCPyV infection in the central nervous system (oligodendrocytes and astrocytes) do not express the required attachment receptor at detectable levels, virus could not bind these cells in tissue sections, and viral quasi-species harboring recurrent mutations in the binding pocket for attachment. While several research groups found evidence JCPyV can use novel receptors for infection, it was also discovered that extracellular vesicles (EVs) can mediate receptor independent JCPyV infection. Recent work also found JCPyV associated EVs include both exosomes and secretory autophagosomes. EVs effectively present a means of immune evasion and increased tissue tropism that complicates viral studies and anti-viral therapeutics. This review focuses on JCPyV infection mechanisms and EV associated and outlines key areas of study necessary to understand the interplay between virus and extracellular vesicles.
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13
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Galectin-8, cytokines, and the storm. Biochem Soc Trans 2022; 50:135-149. [PMID: 35015084 PMCID: PMC9022973 DOI: 10.1042/bst20200677] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 11/30/2021] [Accepted: 12/17/2021] [Indexed: 12/12/2022]
Abstract
Galectin-8 (Gal-8) belongs to a family of animal lectins that modulate cell adhesion, cell proliferation, apoptosis, and immune responses. Recent studies have shown that mammalian Gal-8 induces in an autocrine and paracrine manner, the expression and secretion of cytokines and chemokines such as RANKL, IL-6, IL-1β, SDF-1, and MCP-1. This involves Gal-8 binding to receptor complexes that include MRC2/uPAR/LRP1, integrins, and CD44. Receptors ligation triggers FAK, ERK, Akt, and the JNK signaling pathways, leading to induction of NF-κB that promotes cytokine expression. Indeed, immune-competent Gal-8 knockout (KO) mice express systemic lower levels of cytokines and chemokines while the opposite is true for Gal-8 transgenic animals. Cytokine and chemokine secretion, induced by Gal-8, promotes the migration of cancer cells toward cells expressing this lectin. Accordingly, Gal-8 KO mice experience reduced tumor size and smaller and fewer metastatic lesions when injected with cancer cells. These observations suggest the existence of a ‘vicious cycle’ whereby Gal-8 expression and secretion promotes the secretion of cytokines and chemokines that further promote Gal-8 expression. This ‘vicious cycle’ could enhance the development of a ‘cytokine storm’ which is a key contributor to the poor prognosis of COVID-19 patients.
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14
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Dantas-Pereira L, Menna-Barreto R, Lannes-Vieira J. Extracellular Vesicles: Potential Role in Remote Signaling and Inflammation in Trypanosoma cruzi-Triggered Disease. Front Cell Dev Biol 2022; 9:798054. [PMID: 34988085 PMCID: PMC8721122 DOI: 10.3389/fcell.2021.798054] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 11/26/2021] [Indexed: 12/12/2022] Open
Abstract
Extracellular vesicles (EVs) act as cell communicators and immune response modulators and may be employed as disease biomarkers and drug delivery systems. In infectious diseases, EVs can be released by the pathogen itself or by the host cells (infected or uninfected), potentially impacting the outcome of the immune response and pathological processes. Chagas disease (CD) is caused by infection by the protozoan Trypanosoma cruzi and is the main cause of heart failure in endemic areas. This illness attracted worldwide attention due to the presence of symptomatic seropositive subjects in North America, Asia, Oceania, and Europe. In the acute phase of infection, nonspecific signs, and symptoms contribute to miss diagnosis and early etiological treatment. In this phase, the immune response is crucial for parasite control; however, parasite persistence, dysregulated immune response, and intrinsic tissue factors may contribute to the pathogenesis of chronic CD. Most seropositive subjects remain in the indeterminate chronic form, and from 30 to 40% of the subjects develop cardiac, digestive, or cardio-digestive manifestations. Identification of EVs containing T. cruzi antigens suggests that these vesicles may target host cells and regulate cellular processes and the immune response by molecular mechanisms that remain to be determined. Parasite-released EVs modulate the host-parasite interplay, stimulate intracellular parasite differentiation and survival, and promote a regulatory cytokine profile in experimental models of CD. EVs derived from the parasite-cell interaction inhibit complement-mediated parasite lysis, allowing evasion. EVs released by T. cruzi-infected cells also regulate surrounding cells, maintaining a proinflammatory profile. After a brief review of the basic features of EVs, the present study focuses on potential participation of T. cruzi-secreted EVs in cell infection and persistence of low-grade parasite load in the chronic phase of infection. We also discuss the role of EVs in shaping the host immune response and in pathogenesis and progression of CD.
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Affiliation(s)
- Luíza Dantas-Pereira
- Laboratório de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.,Laboratório de Biologia das Interações, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Rubem Menna-Barreto
- Laboratório de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Joseli Lannes-Vieira
- Laboratório de Biologia das Interações, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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15
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Cytokine-enhanced cytolytic activity of exosomes from NK Cells. Cancer Gene Ther 2022; 29:734-749. [PMID: 34316033 PMCID: PMC9209332 DOI: 10.1038/s41417-021-00352-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 05/09/2021] [Accepted: 05/18/2021] [Indexed: 02/06/2023]
Abstract
Natural killer (NK) cells play key roles in immune surveillance against tumors and viral infection. NK cells distinguish abnormal cells from healthy cells by cell-cell interaction with cell surface proteins and then attack target cells via multiple mechanisms. In addition, extracellular vesicles (EVs) derived from NK cells (NK-EVs), including exosomes, possess cytotoxic capacity against tumor cells, but their characteristics and regulation by cytokines remain unknown. Here, we report that EVs derived from human NK-92 cells stimulated with IL-15 + IL-21 show enhanced cytotoxic capacity against tumor cells. Major cytolytic granules, granzyme B and granzyme H, are enriched by IL-15 + IL-21 stimulation in NK-EVs; however, knockout experiments reveal those cytolytic granules are independent of enhanced cytotoxic capacity. To find out the key molecules, mass spectrometry analyses were performed with different cytokine conditions, no cytokine, IL-15, IL-21, or IL-15 + IL-21. We then found that CD226 (DNAM-1) on NK-EVs is enriched by IL-15 + IL-21 stimulation and that blocking antibodies against CD226 reduced the cytolytic activity of NK-EVs. We also show NK-EVs are taken up by target cells via macropinocytosis. Collectively, our findings elucidate the novel properties of NK-EVs and the mechanism of their incorporation into target cells.
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16
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Elashiry M, Elsayed R, Cutler CW. Exogenous and Endogenous Dendritic Cell-Derived Exosomes: Lessons Learned for Immunotherapy and Disease Pathogenesis. Cells 2021; 11:cells11010115. [PMID: 35011677 PMCID: PMC8750541 DOI: 10.3390/cells11010115] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 12/12/2022] Open
Abstract
Immune therapeutic exosomes, derived exogenously from dendritic cells (DCs), the 'directors' of the immune response, are receiving favorable safety and tolerance profiles in phase I and II clinical trials for a growing number of inflammatory and neoplastic diseases. DC-derived exosomes (EXO), the focus of this review, can be custom tailored with immunoregulatory or immunostimulatory molecules for specific immune cell targeting. Moreover, the relative stability, small size and rapid uptake of EXO by recipient immune cells offer intriguing options for therapeutic purposes. This necessitates an in-depth understanding of mechanisms of EXO biogenesis, uptake and routing by recipient immune cells, as well as their in vivo biodistribution. Against this backdrop is recognition of endogenous exosomes, secreted by all cells, the molecular content of which is reflective of the metabolic state of these cells. In this regard, exosome biogenesis and secretion is regulated by cell stressors of chronic inflammation and tumorigenesis, including dysbiotic microbes, reactive oxygen species and DNA damage. Such cell stressors can promote premature senescence in young cells through the senescence associated secretory phenotype (SASP). Pathological exosomes of the SASP amplify inflammatory signaling in stressed cells in an autocrine fashion or promote inflammatory signaling to normal neighboring cells in paracrine, without the requirement of cell-to-cell contact. In summary, we review relevant lessons learned from the use of exogenous DC exosomes for immune therapy, as well as the pathogenic potential of endogenous DC exosomes.
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17
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Alem F, Olanrewaju AA, Omole S, Hobbs HE, Ahsan N, Matulis G, Brantner CA, Zhou W, Petricoin EF, Liotta LA, Caputi M, Bavari S, Wu Y, Kashanchi F, Hakami RM. Exosomes originating from infection with the cytoplasmic single-stranded RNA virus Rift Valley fever virus (RVFV) protect recipient cells by inducing RIG-I mediated IFN-B response that leads to activation of autophagy. Cell Biosci 2021; 11:220. [PMID: 34953502 PMCID: PMC8710069 DOI: 10.1186/s13578-021-00732-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 12/12/2021] [Indexed: 12/12/2022] Open
Abstract
Background Although multiple studies have demonstrated a role for exosomes during virus infections, our understanding of the mechanisms by which exosome exchange regulates immune response during viral infections and affects viral pathogenesis is still in its infancy. In particular, very little is known for cytoplasmic single-stranded RNA viruses such as SARS-CoV-2 and Rift Valley fever virus (RVFV). We have used RVFV infection as a model for cytoplasmic single-stranded RNA viruses to address this gap in knowledge. RVFV is a highly pathogenic agent that causes RVF, a zoonotic disease for which no effective therapeutic or approved human vaccine exist. Results We show here that exosomes released from cells infected with RVFV (designated as EXi-RVFV) serve a protective role for the host and provide a mechanistic model for these effects. Our results show that treatment of both naïve immune cells (U937 monocytes) and naïve non-immune cells (HSAECs) with EXi-RVFV induces a strong RIG-I dependent activation of IFN-B. We also demonstrate that this strong anti-viral response leads to activation of autophagy in treated cells and correlates with resistance to subsequent viral infection. Since we have shown that viral RNA genome is associated with EXi-RVFV, RIG-I activation might be mediated by the presence of packaged viral RNA sequences. Conclusions Using RVFV infection as a model for cytoplasmic single-stranded RNA viruses, our results show a novel mechanism of host protection by exosomes released from infected cells (EXi) whereby the EXi activate RIG-I to induce IFN-dependent activation of autophagy in naïve recipient cells including monocytes. Because monocytes serve as reservoirs for RVFV replication, this EXi-RVFV-induced activation of autophagy in monocytes may work to slow down or halt viral dissemination in the infected organism. These findings offer novel mechanistic insights that may aid in future development of effective vaccines or therapeutics, and that may be applicable for a better molecular understanding of how exosome release regulates innate immune response to other cytoplasmic single-stranded RNA viruses. Supplementary Information The online version contains supplementary material available at 10.1186/s13578-021-00732-z.
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Affiliation(s)
- Farhang Alem
- School of Systems Biology, George Mason University, Manassas, VA, USA.,Center for Infectious Disease Research (Formerly, National Center for Biodefense and Infectious Diseases), George Mason University, Manassas, VA, USA
| | - Adeyemi A Olanrewaju
- School of Systems Biology, George Mason University, Manassas, VA, USA.,Center for Infectious Disease Research (Formerly, National Center for Biodefense and Infectious Diseases), George Mason University, Manassas, VA, USA
| | - Samson Omole
- School of Systems Biology, George Mason University, Manassas, VA, USA.,Center for Infectious Disease Research (Formerly, National Center for Biodefense and Infectious Diseases), George Mason University, Manassas, VA, USA
| | - Heather E Hobbs
- School of Systems Biology, George Mason University, Manassas, VA, USA.,Center for Infectious Disease Research (Formerly, National Center for Biodefense and Infectious Diseases), George Mason University, Manassas, VA, USA
| | - Noor Ahsan
- School of Systems Biology, George Mason University, Manassas, VA, USA.,Center for Infectious Disease Research (Formerly, National Center for Biodefense and Infectious Diseases), George Mason University, Manassas, VA, USA.,Lentigen Technology, Inc., Gaithersburg, MD, USA
| | - Graham Matulis
- School of Systems Biology, George Mason University, Manassas, VA, USA.,Center for Infectious Disease Research (Formerly, National Center for Biodefense and Infectious Diseases), George Mason University, Manassas, VA, USA
| | - Christine A Brantner
- Nanofabrication and Imaging Center, George Washington University, Washington, DC, USA
| | - Weidong Zhou
- School of Systems Biology, George Mason University, Manassas, VA, USA.,Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA
| | - Emanuel F Petricoin
- School of Systems Biology, George Mason University, Manassas, VA, USA.,Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA
| | - Lance A Liotta
- School of Systems Biology, George Mason University, Manassas, VA, USA.,Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA
| | - Massimo Caputi
- Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, USA
| | | | - Yuntao Wu
- School of Systems Biology, George Mason University, Manassas, VA, USA.,Center for Infectious Disease Research (Formerly, National Center for Biodefense and Infectious Diseases), George Mason University, Manassas, VA, USA
| | - Fatah Kashanchi
- School of Systems Biology, George Mason University, Manassas, VA, USA
| | - Ramin M Hakami
- School of Systems Biology, George Mason University, Manassas, VA, USA. .,Center for Infectious Disease Research (Formerly, National Center for Biodefense and Infectious Diseases), George Mason University, Manassas, VA, USA.
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Virus Mimetic Poly (I:C)-Primed Airway Exosome-like Particles Enter Brain and Induce Inflammatory Cytokines and Mitochondrial Reactive Oxygen Species in Microglia. BIOLOGY 2021; 10:biology10121359. [PMID: 34943274 PMCID: PMC8698382 DOI: 10.3390/biology10121359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/04/2021] [Accepted: 12/16/2021] [Indexed: 11/16/2022]
Abstract
Simple Summary Upper respiratory tract viral infections are among the most common diseases. The blood-brain barrier protects the brain from direct invasion of pathogens. However, the cells share their content with other cells in small nanovesicles called exosomes that can travel long distances and cross biological barriers. Therefore, virus-infected cell extracellular vesicles (EVs) might transmit inflammatory signals or even viral particles to other cells. If they would carry such signals or particles to the central nervous system, it might cause neuroinflammation. However, the migration and impact of virus-primed airway cell EVs on the brain have not been studied yet. Therefore, the study aimed to track airway EVs from the respiratory tract to the brain and determine how infection-primed particles affect microglia—the cells responsible for immune response in the brain. The study revealed that airway cell EVs enter the brain within an hour and gather in microglia. Interestingly, many airway EVs were found in the hippocampus, the region most affected by Alzheimer’s disease. Moreover, EVs from virus-infected airway cells stimulated reactive oxygen species in microglia and induced other inflammation mediators in the brain. Thus, airway cells indeed might communicate inflammatory information to the brain during viral infection. Abstract Viral infections induce extracellular vesicles (EVs) containing viral material and inflammatory factors. Exosomes can easily cross the blood-brain barrier during respiratory tract infection and transmit the inflammatory signal to the brain; however, such a hypothesis has no experimental evidence. The study investigated whether exosome-like vesicles (ELVs) from virus mimetic poly (I:C)-primed airway cells enter the brain and interact with brain immune cells microglia. Airway cells were isolated from Wistar rats and BALB/c mice; microglial cell cultures—from Wistar rats. ELVs from poly (I:C)-stimulated airway cell culture medium were isolated by precipitation, visualised by transmission electron microscopy, and evaluated by nanoparticle analyser; exosomal markers CD81 and CD9 were determined by ELISA. For in vitro and in vivo tracking, particles were loaded with Alexa Fluor 555-labelled RNA. Intracellular reactive oxygen species (ROS) were evaluated by DCFDA fluorescence and mitochondrial superoxide—by MitoSOX. ELVs from poly (I:C)-primed airway cells entered the brain within an hour after intranasal introduction, were internalised by microglia and induced intracellular and intramitochondrial ROS production. There was no ROS increase in microglial cells was after treatment with ELVs from airway cells untreated with poly (I:C). In addition, poly (I:C)-primed airway cells induced inflammatory cytokine expression in the brain. The data indicate that ELVs secreted by virus-primed airway cells might enter the brain, cause the activation of microglial cells and neuroinflammation.
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Borrajo A, Spuch C, Penedo MA, Olivares JM, Agís-Balboa RC. Important role of microglia in HIV-1 associated neurocognitive disorders and the molecular pathways implicated in its pathogenesis. Ann Med 2021; 53:43-69. [PMID: 32841065 PMCID: PMC7877929 DOI: 10.1080/07853890.2020.1814962] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 08/13/2020] [Indexed: 12/11/2022] Open
Abstract
The development of effective combined anti-retroviral therapy (cART) led to a significant reduction in the death rate associated with human immunodeficiency virus type 1 (HIV-1) infection. However, recent studies indicate that considerably more than 50% of all HIV-1 infected patients develop HIV-1-associated neurocognitive disorder (HAND). Microglia are the foremost cells infected by HIV-1 in the central nervous system (CNS), and so, are also likely to contribute to the neurotoxicity observed in HAND. The activation of microglia induces the release of pro-inflammatory markers and altered secretion of cytokines, chemokines, secondary messengers, and reactive oxygen species (ROS) which activate signalling pathways that initiate neuroinflammation. In turn, ROS and inflammation also play critical roles in HAND. However, more efforts are required to understand the physiology of microglia and the processes involved in their activation in order to better understand the how HIV-1-infected microglia are involved in the development of HAND. In this review, we summarize the current state of knowledge about the involvement of oxidative stress mechanisms and role of HIV-induced ROS in the development of HAND. We also examine the academic literature regarding crucial HIV-1 pathogenicity factors implicated in neurotoxicity and inflammation in order to identify molecular pathways that could serve as potential therapeutic targets for treatment of this disease. KEY MESSAGES Neuroinflammation and excitotoxicity mechanisms are crucial in the pathogenesis of HAND. CNS infiltration by HIV-1 and immune cells through the blood brain barrier is a key process involved in the pathogenicity of HAND. Factors including calcium dysregulation and autophagy are the main challenges involved in HAND.
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Affiliation(s)
- A. Borrajo
- Department of Microbiology and Parasitology, Faculty of Pharmacy, Complutense University of Madrid, Madrid, Spain
- Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Roma, Italy
| | - C. Spuch
- Translational Neuroscience Group, Galicia Sur Health Research Institute (IIS Galicia Sur)-Área Sanitaria de Vigo, SERGAS-UVigo, CIBERSAM, Vigo, Spain
| | - M. A. Penedo
- Translational Neuroscience Group, Galicia Sur Health Research Institute (IIS Galicia Sur)-Área Sanitaria de Vigo, SERGAS-UVigo, CIBERSAM, Vigo, Spain
| | - J. M. Olivares
- Department of Psychiatry, Área Sanitaria de Vigo, Vigo, Spain
- Translational Neuroscience Group, Galicia Sur Health Research Institute (IIS Galicia Sur)-Área Sanitaria de Vigo, SERGAS-UVigo, CIBERSAM, Vigo, Spain
| | - R. C. Agís-Balboa
- Translational Neuroscience Group, Galicia Sur Health Research Institute (IIS Galicia Sur)-Área Sanitaria de Vigo, SERGAS-UVigo, CIBERSAM, Vigo, Spain
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20
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Potential Roles of Modified Pectin Targeting Galectin-3 against Severe Acute Respiratory Syndrome Coronavirus-2. J 2021. [DOI: 10.3390/j4040056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Modified pectin (MP) is a bioactive complex polysaccharide that is broken down into smaller fragments of units and used as an oral dietary supplement for cell proliferation. MP is safe and non-toxic with promising therapeutic properties with regard to targeting galectin-3 (GAL-3) toward the prevention and inhibition of viral infections through the modulation of the immune response and anti-inflammatory cytokine effects. This effect of MP as a GAL-3 antagonism, which has shown benefits in preclinical and clinical models, may be of relevance to the progression of the novel severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) in coronavirus disease 2019 patients. The outbreak of emerging infectious diseases continues to pose a threat to human health. Further to the circulation of multiple variants of SARS-CoV-2, an effective and alternative therapeutic approach to combat it has become pertinent. The use of MP as a GAL-3 inhibitor could serve as an antiviral agent blocking against the SARS-CoV-2-binding spike protein. This review highlights the potential effects of MP in viral infections, its proposed role as a GAL-3 inhibitor, and the associated function concerning a SARS-CoV-2 infection.
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21
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New C, Lee ZY, Tan KS, Wong AHP, Wang DY, Tran T. Tetraspanins: Host Factors in Viral Infections. Int J Mol Sci 2021; 22:11609. [PMID: 34769038 PMCID: PMC8583825 DOI: 10.3390/ijms222111609] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/22/2021] [Accepted: 10/23/2021] [Indexed: 12/17/2022] Open
Abstract
Tetraspanins are transmembrane glycoproteins that have been shown increasing interest as host factors in infectious diseases. In particular, they were implicated in the pathogenesis of both non-enveloped (human papillomavirus (HPV)) and enveloped (human immunodeficiency virus (HIV), Zika, influenza A virus, (IAV), and coronavirus) viruses through multiple stages of infection, from the initial cell membrane attachment to the syncytium formation and viral particle release. However, the mechanisms by which different tetraspanins mediate their effects vary. This review aimed to compare and contrast the role of tetraspanins in the life cycles of HPV, HIV, Zika, IAV, and coronavirus viruses, which cause the most significant health and economic burdens to society. In doing so, a better understanding of the relative contribution of tetraspanins in virus infection will allow for a more targeted approach in the treatment of these diseases.
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Affiliation(s)
- ChihSheng New
- Infectious Disease Translational Research Program, National University of Singapore, Singapore 119228, Singapore; (C.N.); (Z.-Y.L.); (K.S.T.); (A.H.-P.W.)
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore
| | - Zhao-Yong Lee
- Infectious Disease Translational Research Program, National University of Singapore, Singapore 119228, Singapore; (C.N.); (Z.-Y.L.); (K.S.T.); (A.H.-P.W.)
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore
| | - Kai Sen Tan
- Infectious Disease Translational Research Program, National University of Singapore, Singapore 119228, Singapore; (C.N.); (Z.-Y.L.); (K.S.T.); (A.H.-P.W.)
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117545, Singapore
- Department of Otolaryngology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
- Biosafety Level 3 Core Facility, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, Singapore 119228, Singapore
| | - Amanda Huee-Ping Wong
- Infectious Disease Translational Research Program, National University of Singapore, Singapore 119228, Singapore; (C.N.); (Z.-Y.L.); (K.S.T.); (A.H.-P.W.)
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore
| | - De Yun Wang
- Infectious Disease Translational Research Program, National University of Singapore, Singapore 119228, Singapore; (C.N.); (Z.-Y.L.); (K.S.T.); (A.H.-P.W.)
- Department of Otolaryngology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - Thai Tran
- Infectious Disease Translational Research Program, National University of Singapore, Singapore 119228, Singapore; (C.N.); (Z.-Y.L.); (K.S.T.); (A.H.-P.W.)
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore
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22
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Hodge AL, Baxter AA, Poon IKH. Gift bags from the sentinel cells of the immune system: The diverse role of dendritic cell-derived extracellular vesicles. J Leukoc Biol 2021; 111:903-920. [PMID: 34699107 DOI: 10.1002/jlb.3ru1220-801r] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Dendritic cells (DCs) are professional APCs of the immune system that continuously sample their environment and function to stimulate an adaptive immune response by initiating Ag-specific immunity or tolerance. Extracellular vesicles (EVs), small membrane-bound structures, are released from DCs and have been discovered to harbor functional peptide-MHC complexes, T cell costimulatory molecules, and other molecules essential for Ag presentation, immune cell regulation, and stimulating immune responses. As such, DC-derived EVs are being explored as potential immunotherapeutic agents. DC-derived EVs have also been implicated to function as a trafficking mechanism of infectious particles aiding viral propagation. This review will explore the unique features that enable DC-derived EVs to regulate immune responses and interact with recipient cells, their roles within Ag-presentation and disease settings, as well as speculating on a potential immunological role of apoptotic DC-derived EVs.
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Affiliation(s)
- Amy L Hodge
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - Amy A Baxter
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - Ivan K H Poon
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
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23
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Dimitrakopoulos FI, Kottorou AE, Rodgers K, Sherwood JT, Koliou GA, Lee B, Yang A, Brahmer JR, Baylin SB, Yang SC, Orita H, Hulbert A, Brock MV. Clinical Significance of Plasma CD9-Positive Exosomes in HIV Seronegative and Seropositive Lung Cancer Patients. Cancers (Basel) 2021; 13:cancers13205193. [PMID: 34680341 PMCID: PMC8533968 DOI: 10.3390/cancers13205193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/27/2021] [Accepted: 10/06/2021] [Indexed: 12/21/2022] Open
Abstract
Simple Summary The role of exosomes in HIV (human immunodeficiency virus) as well as in cancer patients seems to be pivotal. The aim of our retrospective study was to assess the potential clinical value of CD9-positive plasma exosomes in lung cancer patients, patients with lung granulomas, healthy individuals, and HIV-positive patients with or without lung cancer. This study shows that CD9-positive plasma exosome concentrations differ between healthy controls, patients with immunocompetent pulmonary granulomas and patients with lung cancer. In addition, CD9-positive plasma exosomes are increased in HIV seropositive and HIV seronegative lung cancer patients compared to healthy controls, while chemotherapy-treated lung cancer patients have lower plasma exosome levels. This study also shows that in chemotherapy-naïve patients, plasma exosome levels are directly correlated with a prognosis with higher concentrations being associated with a longer, overall survival. These findings further support previous literature on the translational significance of total plasma exosomes in cancer patients, despite different immunological contexts. Abstract Recently, the role of exosomes in the progression of both cancer and HIV (human immunodeficiency virus) has been described. This study investigates the clinical significance of CD9-positive plasma exosomes in lung cancer patients, healthy individuals, and HIV-positive patients with or without lung cancer. Using a verified with transmission electron microscopy double-sandwich ELISA technique, plasma-derived exosomes were isolated and quantified from 210 lung cancer patients (including 44 metastatic patients with progressive disease after chemotherapy), 49 healthy controls, 20 patients with pulmonary granulomas, 19 HIV+ patients with lung cancer, 31 HIV+ patients without cancer, and 3 HIV+ patients with pulmonary granulomas. Plasma exosome concentrations differed between healthy controls, patients with immunocompetent pulmonary granulomas and patients with lung cancer even after chemotherapy (p < 0.001). Lung cancer patients after chemotherapy had lower exosome concentrations compared to patients with untreated lung cancer or granuloma (p < 0.001 for both). HIV+ patients without lung cancer had significantly higher exosome concentrations compared to HIV+ patients with lung cancer (p = 0.016). Although exosome concentrations differed between all different lung cancer histologies and healthy controls (p < 0.001 for all histologies), adjusted statistical significance was oµy retained for patients with granulomas and SCLC (Small-cell lung cancer, p < 0.001). HIV-induced immunodeficient patients with or without lung cancer had lower plasma exosomes compared to immunocompetent granuloma and lung cancer patients (p < 0.001). Finally, higher plasma exosomes were associated both on univariate (p = 0.044), and multivariate analysis (p = 0.040) with a better 3-year survival in stage II and III NSCLC (Non-small-cell lung carcinoma) patients. In conclusion, our study shows that CD9-positive plasma exosomes are associated with both lung cancer and HIV, prior chemotherapy, as well as with survival, suggesting a possible prognostic value.
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Affiliation(s)
- Foteinos-Ioannis Dimitrakopoulos
- Division of Thoracic Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (F.-I.D.); (A.E.K.); (K.R.); (B.L.); (A.Y.); (S.C.Y.)
- Molecular Oncology Laboratory, Division of Oncology, Department of Internal Medicine, Medical School, University of Patras, 26504 Patras, Greece
| | - Anastasia E. Kottorou
- Division of Thoracic Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (F.-I.D.); (A.E.K.); (K.R.); (B.L.); (A.Y.); (S.C.Y.)
- Molecular Oncology Laboratory, Division of Oncology, Department of Internal Medicine, Medical School, University of Patras, 26504 Patras, Greece
| | - Kristen Rodgers
- Division of Thoracic Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (F.-I.D.); (A.E.K.); (K.R.); (B.L.); (A.Y.); (S.C.Y.)
| | | | - Georgia-Angeliki Koliou
- Section of Biostatistics, Data Office, Hellenic Cooperative Oncology Group (HECOG), 11526 Athens, Greece;
| | - Beverly Lee
- Division of Thoracic Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (F.-I.D.); (A.E.K.); (K.R.); (B.L.); (A.Y.); (S.C.Y.)
| | - Andrew Yang
- Division of Thoracic Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (F.-I.D.); (A.E.K.); (K.R.); (B.L.); (A.Y.); (S.C.Y.)
| | - Julie Renee Brahmer
- Department of Oncology, Johns Hopkins School of Medicine, Baltimore, MD 21231, USA;
| | - Stephen B. Baylin
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins Bayview, Johns Hopkins University, Baltimore, MD 21231, USA;
| | - Stephen C. Yang
- Division of Thoracic Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (F.-I.D.); (A.E.K.); (K.R.); (B.L.); (A.Y.); (S.C.Y.)
| | - Hajime Orita
- Department of Gastroenterology and Minimally Invasive Surgery, Juntendo University Hospital, Tokyo 113-8421, Japan;
| | - Alicia Hulbert
- Division of Thoracic Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (F.-I.D.); (A.E.K.); (K.R.); (B.L.); (A.Y.); (S.C.Y.)
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins Bayview, Johns Hopkins University, Baltimore, MD 21231, USA;
- Department of Surgery, The University of Illinois at Chicago, College of Medicine, Chicago, IL 60612, USA
- Correspondence: (A.H.); (M.V.B.); Tel.: +1-410-955-4408 (M.V.B.)
| | - Malcolm V. Brock
- Division of Thoracic Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (F.-I.D.); (A.E.K.); (K.R.); (B.L.); (A.Y.); (S.C.Y.)
- Correspondence: (A.H.); (M.V.B.); Tel.: +1-410-955-4408 (M.V.B.)
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24
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Narayanan M, Kulkarni R, Jiang S, Kashanchi F, Prasad A. Cocaine augments neuro-inflammation via modulating extracellular vesicle release in HIV-1 infected immune cells. Retrovirology 2021; 18:26. [PMID: 34530855 PMCID: PMC8444590 DOI: 10.1186/s12977-021-00570-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 08/19/2021] [Indexed: 12/25/2022] Open
Abstract
Background Extracellular Vesicles (EV) recently have been implicated in the pathogenesis of HIV-1 syndromes, including neuroinflammation and HIV-1 associated neurological disorder (HAND). Cocaine, an illicit stimulant drug used worldwide is known to exacerbate these HIV-1 associated neurological syndromes. However, the effects of cocaine on EV biogenesis and roles of EVs in enhancing HIV-1 pathogenesis are not yet well defined. Results Here, we investigated the effects of cocaine on EV biogenesis and release in HIV-1 infected immune cells and explored their roles in elicitation of neuroinflammation. We found that cocaine significantly augmented the release of EVs from uninfected and HIV-1 infected T-cells, DCs and macrophages. Further analysis of the molecular components of EVs revealed enhanced expression of adhesion molecules integrin β1 and LFA-1 in those EVs derived from cocaine treated cells. Intriguingly, in EVs derived from HIV-1 infected cells, cocaine treatment significantly increased the levels of viral genes in EVs released from macrophages and DCs, but not in T-cells. Exploring the molecular mechanism to account for this, we found that DCs and macrophages showed enhanced expression of the cocaine receptor Sigma 1-Receptor compared to T-cells. In addition, we found that cocaine significantly altered the integrity of the RNA-induced silencing complex (RISC) in HIV-1 infected macrophages and DCs compared to untreated HIV-1 infected cells. Characterizing further the molecular mechanisms involved in how cocaine increased EV release, we found that cocaine decreased the expression of the interferon-inducible protein BST-2; this resulted in altered trafficking of intracellular virus containing vesicles and EV biogenesis and release. We also observed EVs released from cocaine treated HIV-1 infected macrophages and DCs enhanced HIV-1 trans-infection to T-cells compared to those from untreated and HIV-1 infected cells. These EVs triggered release of proinflammatory cytokines in human brain microvascular endothelial cells (HBMECs) and altered monolayer integrity. Conclusions Taken together, our results provide a novel mechanism which helps to elucidate the enhanced prevalence of neurological disorders in cocaine using HIV-1 infected individuals and offers insights into developing novel therapeutic strategies against HAND in these hosts. Supplementary Information The online version contains supplementary material available at 10.1186/s12977-021-00570-4.
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Affiliation(s)
- Manojkumar Narayanan
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Rutuja Kulkarni
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Shuxian Jiang
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Fatah Kashanchi
- Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Manassas, VA, 20110, USA
| | - Anil Prasad
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA.
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25
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Galectins in Cancer and the Microenvironment: Functional Roles, Therapeutic Developments, and Perspectives. Biomedicines 2021; 9:biomedicines9091159. [PMID: 34572346 PMCID: PMC8465754 DOI: 10.3390/biomedicines9091159] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/26/2021] [Accepted: 08/31/2021] [Indexed: 12/15/2022] Open
Abstract
Changes in cell growth and metabolism are affected by the surrounding environmental factors to adapt to the cell’s most appropriate growth model. However, abnormal cell metabolism is correlated with the occurrence of many diseases and is accompanied by changes in galectin (Gal) performance. Gals were found to be some of the master regulators of cell–cell interactions that reconstruct the microenvironment, and disordered expression of Gals is associated with multiple human metabolic-related diseases including cancer development. Cancer cells can interact with surrounding cells through Gals to create more suitable conditions that promote cancer cell aggressiveness. In this review, we organize the current understanding of Gals in a systematic way to dissect Gals’ effect on human disease, including how Gals’ dysregulated expression affects the tumor microenvironment’s metabolism and elucidating the mechanisms involved in Gal-mediated diseases. This information may shed light on a more precise understanding of how Gals regulate cell biology and facilitate the development of more effective therapeutic strategies for cancer treatment by targeting the Gal family.
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26
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Sehrawat S, Kaur M. Galectin-3 as a modifier of anti-microbial immunity: Unraveling the unknowns. Glycobiology 2021; 30:418-426. [PMID: 31985798 DOI: 10.1093/glycob/cwaa005] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/20/2020] [Accepted: 01/20/2020] [Indexed: 12/12/2022] Open
Abstract
Galectins play diverse roles in pathophysiology of infectious diseases and cancers. Galectin-3 is one of the most studied family member and the only chimeric type lectin. Many aspects of its biogenesis, range of activities, and the disease-modifying potential particularly during microbial infections are yet to be known. We review our current understanding of these issues and also highlight gaps in better defining the immune modulatory potential of galectin-3 during different stages of host responsiveness when an infection sets in. Additionally, we discuss commonly used strategies to disrupt galectin-3 functions both extracellulalry and intracellularly. Existing and improved novel strategies could help fine-tune immune responses to achieve better prognosis of infectious diseases.
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Affiliation(s)
- Sharvan Sehrawat
- Department of Biological Science, Indian Institute of Science Education and Research Mohali, SAS Nagar Knowledge City, PO Manauli, Mohali 140306 India
| | - Manpreet Kaur
- Department of Biological Science, Indian Institute of Science Education and Research Mohali, SAS Nagar Knowledge City, PO Manauli, Mohali 140306 India
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27
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Diagnostic Significance of Serum Galectin-3 in Hospitalized Patients with COVID-19-A Preliminary Study. Biomolecules 2021; 11:biom11081136. [PMID: 34439802 PMCID: PMC8393726 DOI: 10.3390/biom11081136] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/15/2021] [Accepted: 07/25/2021] [Indexed: 12/26/2022] Open
Abstract
Severe coronavirus disease 2019 (COVID-19) is associated with hyperinflammation leading to organ injury, including respiratory failure. Galectin-3 was implicated in innate immunological response to infections and in chronic fibrosis. The aim of our preliminary study was the assessment of the diagnostic utility of serum galectin-3 in patients with COVID-19. The prospective observational study included adult patients admitted with active COVID-19 and treated in tertiary hospital between June and July 2020. The diagnosis was confirmed by the quantitative detection of nucleic acid of severe acute respiratory syndrome coronavirus 2 in nasopharyngeal swabs. Galectin-3 was measured by enzyme immunoassay in serum samples obtained during the first five days of hospital stay. We included 70 patients aged 25 to 73 years; 90% had at least one comorbidity. During the hospital stay, 32.9% were diagnosed with COVID-19 pneumonia and 12.9% required treatment in the intensive care unit (ICU). Serum galectin-3 was significantly increased in patients who developed pneumonia, particularly those who required ICU admission. Positive correlations were found between galectin-3 and inflammatory markers (interleukin-6, C-reactive protein, ferritin, pentraxin-3), a marker of endothelial injury (soluble fms-like tyrosine kinase-1), and a range of tissue injury markers. Serum galectin-3 enabled the diagnosis of pneumonia with moderate diagnostic accuracy and the need for ICU treatment with high diagnostic accuracy. Our findings strengthen the hypothesis that galectin-3 may be involved in severe COVID-19. Further studies are planned to confirm the preliminary results and to verify possible associations of galectin-3 with long-term consequences of COVID-19, including pulmonary fibrosis.
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28
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Horn MD, MacLean AG. Extracellular Vesicles as a Means of Viral Immune Evasion, CNS Invasion, and Glia-Induced Neurodegeneration. Front Cell Neurosci 2021; 15:695899. [PMID: 34290592 PMCID: PMC8287503 DOI: 10.3389/fncel.2021.695899] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/10/2021] [Indexed: 12/23/2022] Open
Abstract
Extracellular vesicles (EVs) are small, membrane-bound vesicles released by cells as a means of intercellular communication. EVs transfer proteins, nucleic acids, and other biologically relevant molecules from one cell to another. In the context of viral infections, EVs can also contain viruses, viral proteins, and viral nucleic acids. While there is some evidence that the inclusion of viral components within EVs may be part of the host defense, much of the research in this field supports a pro-viral role for EVs. Packaging of viruses within EVs has repeatedly been shown to protect viruses from antibody neutralization while also allowing for their integration into cells otherwise impervious to the virus. EVs also bidirectionally cross the blood-brain barrier (BBB), providing a potential route for peripheral viruses to enter the brain while exiting EVs may serve as valuable biomarkers of neurological disease burden. Within the brain, EVs can alter glial activity, increase neuroinflammation, and induce neurotoxicity. The purpose of this mini-review is to summarize research related to viral manipulation of EV-mediated intercellular communication and how such manipulation may lead to infection of the central nervous system, chronic neuroinflammation, and neurodegeneration.
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Affiliation(s)
- Miranda D Horn
- Neuroscience Program, Brain Institute, Tulane University, New Orleans, LA, United States
| | - Andrew G MacLean
- Neuroscience Program, Brain Institute, Tulane University, New Orleans, LA, United States.,Division of Comparative Pathology, Tulane National Primate Research Center, Tulane University, Covington, LA, United States.,Department of Microbiology & Immunology, Tulane University School of Medicine, New Orleans, LA, United States.,Tulane Center for Aging, New Orleans, LA, United States
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29
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Albacete-Albacete L, Sánchez-Álvarez M, Del Pozo MA. Extracellular Vesicles: An Emerging Mechanism Governing the Secretion and Biological Roles of Tenascin-C. Front Immunol 2021; 12:671485. [PMID: 33981316 PMCID: PMC8107694 DOI: 10.3389/fimmu.2021.671485] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 04/08/2021] [Indexed: 12/12/2022] Open
Abstract
ECM composition and architecture are tightly regulated for tissue homeostasis. Different disorders have been associated to alterations in the levels of proteins such as collagens, fibronectin (FN) or tenascin-C (TnC). TnC emerges as a key regulator of multiple inflammatory processes, both during physiological tissue repair as well as pathological conditions ranging from tumor progression to cardiovascular disease. Importantly, our current understanding as to how TnC and other non-collagen ECM components are secreted has remained elusive. Extracellular vesicles (EVs) are small membrane-bound particles released to the extracellular space by most cell types, playing a key role in cell-cell communication. A broad range of cellular components can be transported by EVs (e.g. nucleic acids, lipids, signalling molecules and proteins). These cargoes can be transferred to target cells, potentially modulating their function. Recently, several extracellular matrix (ECM) proteins have been characterized as bona fide EV cargoes, exosomal secretion being particularly critical for TnC. EV-dependent ECM secretion might underpin diseases where ECM integrity is altered, establishing novel concepts in the field such as ECM nucleation over long distances, and highlighting novel opportunities for diagnostics and therapeutic intervention. Here, we review recent findings and standing questions on the molecular mechanisms governing EV–dependent ECM secretion and its potential relevance for disease, with a focus on TnC.
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Affiliation(s)
- Lucas Albacete-Albacete
- Mechanoadaptation and Caveolae Biology Lab, Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Miguel Sánchez-Álvarez
- Mechanoadaptation and Caveolae Biology Lab, Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Miguel Angel Del Pozo
- Mechanoadaptation and Caveolae Biology Lab, Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
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30
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Rezaie J, Aslan C, Ahmadi M, Zolbanin NM, Kashanchi F, Jafari R. The versatile role of exosomes in human retroviral infections: from immunopathogenesis to clinical application. Cell Biosci 2021; 11:19. [PMID: 33451365 PMCID: PMC7810184 DOI: 10.1186/s13578-021-00537-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 01/09/2021] [Indexed: 02/06/2023] Open
Abstract
Eukaryotic cells produce extracellular vesicles (EVs) mediating intercellular communication. These vesicles encompass many bio-molecules such as proteins, nucleic acids, and lipids that are transported between cells and regulate pathophysiological actions in the recipient cell. Exosomes originate from multivesicular bodies inside cells and microvesicles shed from the plasma membrane and participate in various pathological conditions. Retroviruses such as Human Immunodeficiency Virus -type 1 (HIV-1) and Human T-cell leukemia virus (HTLV)-1 engage exosomes for spreading and infection. Exosomes from virus-infected cells transfer viral components such as miRNAs and proteins that promote infection and inflammation. Additionally, these exosomes deliver virus receptors to target cells that make them susceptible to virus entry. HIV-1 infected cells release exosomes that contribute to the pathogenesis including neurological disorders and malignancy. Exosomes can also potentially carry out as a modern approach for the development of HIV-1 and HTLV-1 vaccines. Furthermore, as exosomes are present in most biological fluids, they hold the supreme capacity for clinical usage in the early diagnosis and prognosis of viral infection and associated diseases. Our current knowledge of exosomes' role from virus-infected cells may provide an avenue for efficient retroviruses associated with disease prevention. However, the exact mechanism involved in retroviruses infection/ inflammation remains elusive and related exosomes research will shed light on the mechanisms of pathogenesis.
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Affiliation(s)
- Jafar Rezaie
- Solid Tumor Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences, Shafa St, Ershad Blvd., P.O. Box: 1138, 57147, Urmia, Iran
| | - Cynthia Aslan
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdi Ahmadi
- Tuberculosis and Lung Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Naime Majidi Zolbanin
- Department of Pharmacology and Toxicology, School of Pharmacy, Urmia University of Medical Sciences, Urmia, Iran
| | - Fatah Kashanchi
- School of Systems Biology, Laboratory of Molecular Virology, George Mason University, Discovery Hall Room 182, 10900 University Blvd., Manassas, VA, 20110, USA.
| | - Reza Jafari
- Solid Tumor Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences, Shafa St, Ershad Blvd., P.O. Box: 1138, 57147, Urmia, Iran.
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31
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Bazié WW, Boucher J, Vitry J, Goyer B, Routy JP, Tremblay C, Trottier S, Jenabian MA, Provost P, Alary M, Gilbert C. Plasma Extracellular Vesicle Subtypes May be Useful as Potential Biomarkers of Immune Activation in People With HIV. Pathog Immun 2021; 6:1-28. [PMID: 33987483 PMCID: PMC8109236 DOI: 10.20411/pai.v6i1.384] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 11/02/2020] [Indexed: 12/15/2022] Open
Abstract
Background Extracellular vesicles (EVs) are intercellular messengers with epigenetic potential since they can shuttle microRNA (miRNA). EVs and miRNA play a role in human immunodeficiency virus (HIV) infection immunopathogenesis. Chronic immune activation and systemic inflammation during HIV infection despite effective antiretroviral therapy (ART) are associated with non-acquired immunodeficiency syndrome (AIDS) comorbidities in people living with HIV (PLWH). Analysis of plasma EVs and their miRNA content may be useful as immune activation or inflammatory biomarkers in PLWH receiving ART. In this study, we hypothesized that the number, size, and miRNA of large and small EVs could reflect immune activation associated with an elevated CD8 T-cell count or a low CD4/CD8 ratio in PLWH. Methods Plasma EVs subtype purified from PLWH and uninfected controls were sized using dynamic light scattering and quantified using flow cytometry and acetylcholine esterase (AChE) activity. Expression of mature miRNAs miR-92, miR-155, miR-223 was measured by quantitative reverse-transcriptase polymerase chain reaction in EVs and leucocytes. Results HIV infection induces increased production of small EVs in plasma. EV subtypes were differentially enriched in miR-92, miR-155, and miR-223. Positive correlations between CD8 T-cell count and large EVs abundance and small EVs AChE activity were observed. CD4/CD8 ratio was negatively correlated with small EV AChE activity, and miRNA-155 level per small EV was negatively correlated with CD8 T-cell count. Conclusions These findings suggest that quantifying large or small EVs and profiling miRNA content per EV might provide new functional biomarkers of immune activation and inflammation.
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Affiliation(s)
- Wilfried Wenceslas Bazié
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, Canada.,Programme de recherche sur les maladies infectieuses, Centre Muraz, Institut National de Santé Publique, Bobo-Dioulasso, Burkina Faso
| | - Julien Boucher
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Julien Vitry
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Benjamin Goyer
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
| | - Jean Pierre Routy
- Chronic Viral Illness Service and Division of Hematology, McGill University Health Centre, Montreal, QC, Canada.,Infectious Diseases and Immunity in Global Health Program, Research Institute, McGill University Health Centre, Montréal, QC, Canada
| | - Cécile Tremblay
- Centre de recherche du Centre Hospitalier de l'Université de Montréal, Montréal, QC, Canada.,Département de microbiologie, infectiologie et immunologie, Faculté de médecine, Université de Montréal, Montréal, QC, Canada
| | - Sylvie Trottier
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Mohammad-Ali Jenabian
- Département des sciences biologiques, Université de Québec à Montréal (UQAM), Montréal, QC, Canada
| | - Patrick Provost
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Michel Alary
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de médecine sociale et préventive, Faculté de médecine, Université de Laval, Québec, C, Canada.,Institut national de santé publique du Québec, Québec, QC, Canada
| | - Caroline Gilbert
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, Canada
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Jin Y, Meng Q, Zhang B, Xie C, Chen X, Tian B, Wang J, Shih TC, Zhang Y, Cao J, Yang Y, Chen S, Guan X, Chen X, Hong A. Cancer-associated fibroblasts-derived exosomal miR-3656 promotes the development and progression of esophageal squamous cell carcinoma via the ACAP2/PI3K-AKT signaling pathway. Int J Biol Sci 2021; 17:3689-3701. [PMID: 34671193 PMCID: PMC8495391 DOI: 10.7150/ijbs.62571] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 08/05/2021] [Indexed: 12/19/2022] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is one of the most common gastrointestinal tumors, accounting for almost half a million deaths per year. Cancer-associated fibroblasts (CAFs) are the major constituent of the tumor microenvironment (TME) and dramatically impact ESCC progression. Recent evidence suggests that exosomes derived from CAFs are able to transmit regulating signals and promote ESCC development. In this study, we compared different the component ratios of miRNAs in exosomes secreted by CAFs in tumors and with those from normal fibroblasts (NFs) in precancerous tissues. The mRNA level of hsa-miR-3656 was significantly upregulated in the former exosomes. Subsequently, by comparing tumor cell development in vitro and in vivo, we found that the proliferation, migration and invasion capabilities of ESCC cells were significantly improved when miR-3656 was present. Further target gene analysis confirmed ACAP2 was a target gene regulated by miR-3656 and exhibited a negative regulatory effect on tumor proliferation. Additionally, the downregulation of ACAP2 triggered by exosomal-derived miR-3656 further promotes the activation of the PI3K/AKT and β-catenin signaling pathways and ultimately improves the growth of ESCC cells both in vitro and in xenograft models. These results may represent a potential therapeutic target for ESCC and provide a new basis for clinical treatment plans.
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Affiliation(s)
- Yuan Jin
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, P. R. China
- National Engineering Research Center of Genetic Medicine, Guangzhou 510632, P. R. China
- Guangdong Province Key Laboratory of Bioengineering Medicine, Guangzhou 510632, P. R. China
- Guangdong Provincial biotechnology drug & Engineering Technology Research Center, Guangzhou 510632, P. R. China
| | - Qilin Meng
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, P. R. China
- National Engineering Research Center of Genetic Medicine, Guangzhou 510632, P. R. China
- Guangdong Province Key Laboratory of Bioengineering Medicine, Guangzhou 510632, P. R. China
- Guangdong Provincial biotechnology drug & Engineering Technology Research Center, Guangzhou 510632, P. R. China
| | - Bihui Zhang
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, P. R. China
- National Engineering Research Center of Genetic Medicine, Guangzhou 510632, P. R. China
- Guangdong Province Key Laboratory of Bioengineering Medicine, Guangzhou 510632, P. R. China
- Guangdong Provincial biotechnology drug & Engineering Technology Research Center, Guangzhou 510632, P. R. China
| | - Chen Xie
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, P. R. China
- National Engineering Research Center of Genetic Medicine, Guangzhou 510632, P. R. China
- Guangdong Province Key Laboratory of Bioengineering Medicine, Guangzhou 510632, P. R. China
- Guangdong Provincial biotechnology drug & Engineering Technology Research Center, Guangzhou 510632, P. R. China
| | - Xue Chen
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, P. R. China
- National Engineering Research Center of Genetic Medicine, Guangzhou 510632, P. R. China
- Guangdong Province Key Laboratory of Bioengineering Medicine, Guangzhou 510632, P. R. China
- Guangdong Provincial biotechnology drug & Engineering Technology Research Center, Guangzhou 510632, P. R. China
| | - Baoqing Tian
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, P. R. China
- National Engineering Research Center of Genetic Medicine, Guangzhou 510632, P. R. China
- Guangdong Province Key Laboratory of Bioengineering Medicine, Guangzhou 510632, P. R. China
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, P. R. China
| | - Jiakang Wang
- Cancer Center of Guangzhou Medical University, Guangzhou 510090, P. R. China
| | - Tsung-Chieh Shih
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, California, USA
| | - Yibo Zhang
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, P. R. China
- National Engineering Research Center of Genetic Medicine, Guangzhou 510632, P. R. China
- Guangdong Province Key Laboratory of Bioengineering Medicine, Guangzhou 510632, P. R. China
- Guangdong Provincial biotechnology drug & Engineering Technology Research Center, Guangzhou 510632, P. R. China
| | - Jieqiong Cao
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, P. R. China
- National Engineering Research Center of Genetic Medicine, Guangzhou 510632, P. R. China
- Guangdong Province Key Laboratory of Bioengineering Medicine, Guangzhou 510632, P. R. China
- Guangdong Provincial biotechnology drug & Engineering Technology Research Center, Guangzhou 510632, P. R. China
| | - Yiqi Yang
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, P. R. China
- National Engineering Research Center of Genetic Medicine, Guangzhou 510632, P. R. China
- Guangdong Province Key Laboratory of Bioengineering Medicine, Guangzhou 510632, P. R. China
- Guangdong Provincial biotechnology drug & Engineering Technology Research Center, Guangzhou 510632, P. R. China
| | - Size Chen
- Oncology Department, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510080, P. R. China
- Guangdong Provincial Engineering Research Center for Precise Therapy of Esophageal Cancer, Guangzhou 510080, P. R. China
| | - Xinyuan Guan
- Department of Clinical Oncology, University of Hong Kong, Hong Kong, P. R. China
| | - Xiaojia Chen
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, P. R. China
- National Engineering Research Center of Genetic Medicine, Guangzhou 510632, P. R. China
- Guangdong Province Key Laboratory of Bioengineering Medicine, Guangzhou 510632, P. R. China
- Guangdong Provincial biotechnology drug & Engineering Technology Research Center, Guangzhou 510632, P. R. China
- ✉ Corresponding author: Dr. An Hong and Dr. Xiaojia Chen. (AH) , (XC)
| | - An Hong
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, P. R. China
- National Engineering Research Center of Genetic Medicine, Guangzhou 510632, P. R. China
- Guangdong Province Key Laboratory of Bioengineering Medicine, Guangzhou 510632, P. R. China
- Guangdong Provincial biotechnology drug & Engineering Technology Research Center, Guangzhou 510632, P. R. China
- ✉ Corresponding author: Dr. An Hong and Dr. Xiaojia Chen. (AH) , (XC)
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Wang WH, Lin CY, Chang MR, Urbina AN, Assavalapsakul W, Thitithanyanont A, Chen YH, Liu FT, Wang SF. The role of galectins in virus infection - A systemic literature review. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2020; 53:925-935. [PMID: 31630962 DOI: 10.1016/j.jmii.2019.09.005] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 09/05/2019] [Accepted: 09/08/2019] [Indexed: 01/03/2023]
Abstract
BACKGROUND Galectins are β-Galactose binding lectins expressed in numerous cells and play multiple roles in various physiological and cellular functions. However, few information is available regarding the role of galectins in virus infections. Here, we conducted a systemic literature review to analyze the role of galectins in human virus infection. METHODS This study uses a systematic method to identify and select eligible articles according to the PRISMA guidelines. References were selected from PubMed, Web of Science and Google Scholar database covering publication dated from August 1995 to December 2018. RESULTS Results indicate that galectins play multiple roles in regulation of virus infections. Galectin-1 (Gal-1), galectin-3 (Gal-3), galectin-8 (Gal-8), and galectin-9 (Gal-9) were found as the most predominant galectins reported to participate in virus infection. The regulatory function of galectins occurs by extracellularly binding to viral glycosylated envelope proteins, interacting with ligands or receptors on immune cells, or acting intracellularly with viral or cellular components in the cytoplasm. Several galectins express either positive or negative regulatory role, while some had dual regulatory capabilities on virus propagation based on the conditions and their localization. However, limited information about the endogenous function of galectins were found. Therefore, the endogenous effects of galectins in host-virus regulation remains valuable to investigate. CONCLUSIONS This study offers information regarding the various roles galectins shown in viral infection and suggest that galectins can potentially be used as viral therapeutic targets or antagonists.
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Affiliation(s)
- Wen-Hung Wang
- Division of Infectious Disease, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan; Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Chih-Yen Lin
- Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan; Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Max R Chang
- Program in Tropical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung City, 80708, Taiwan
| | - Aspiro Nayim Urbina
- Program in Tropical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung City, 80708, Taiwan
| | - Wanchai Assavalapsakul
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Arunee Thitithanyanont
- Department of Microbiology, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
| | - Yen-Hsu Chen
- Division of Infectious Disease, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan; Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan; Department of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, 80145, Taiwan; Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, HsinChu, 300, Taiwan.
| | - Fu-Tong Liu
- Institute of Biomedical Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Sheng-Fan Wang
- Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan; Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan.
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Fifty Years of JC Polyomavirus: A Brief Overview and Remaining Questions. Viruses 2020; 12:v12090969. [PMID: 32882975 PMCID: PMC7552028 DOI: 10.3390/v12090969] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 08/28/2020] [Accepted: 08/30/2020] [Indexed: 12/11/2022] Open
Abstract
In the fifty years since the discovery of JC polyomavirus (JCPyV), the body of research representing our collective knowledge on this virus has grown substantially. As the causative agent of progressive multifocal leukoencephalopathy (PML), an often fatal central nervous system disease, JCPyV remains enigmatic in its ability to live a dual lifestyle. In most individuals, JCPyV reproduces benignly in renal tissues, but in a subset of immunocompromised individuals, JCPyV undergoes rearrangement and begins lytic infection of the central nervous system, subsequently becoming highly debilitating-and in many cases, deadly. Understanding the mechanisms allowing this process to occur is vital to the development of new and more effective diagnosis and treatment options for those at risk of developing PML. Here, we discuss the current state of affairs with regards to JCPyV and PML; first summarizing the history of PML as a disease and then discussing current treatment options and the viral biology of JCPyV as we understand it. We highlight the foundational research published in recent years on PML and JCPyV and attempt to outline which next steps are most necessary to reduce the disease burden of PML in populations at risk.
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35
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Dadhich R, Kapoor S. Various Facets of Pathogenic Lipids in Infectious Diseases: Exploring Virulent Lipid-Host Interactome and Their Druggability. J Membr Biol 2020; 253:399-423. [PMID: 32833058 PMCID: PMC7443855 DOI: 10.1007/s00232-020-00135-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 08/12/2020] [Indexed: 02/07/2023]
Abstract
Lipids form an integral, structural, and functional part of all life forms. They play a significant role in various cellular processes such as membrane fusion, fission, endocytosis, protein trafficking, and protein functions. Interestingly, recent studies have revealed their more impactful and critical involvement in infectious diseases, starting with the manipulation of the host membrane to facilitate pathogenic entry. Thereafter, pathogens recruit specific host lipids for the maintenance of favorable intracellular niche to augment their survival and proliferation. In this review, we showcase the lipid-mediated host pathogen interplay in context of life-threatening viral and bacterial diseases including the recent SARS-CoV-2 infection. We evaluate the emergent lipid-centric approaches adopted by these pathogens, while delineating the alterations in the composition and organization of the cell membrane within the host, as well as the pathogen. Lastly, crucial nexus points in their interaction landscape for therapeutic interventions are identified. Lipids act as critical determinants of bacterial and viral pathogenesis by altering the host cell membrane structure and functions.
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Affiliation(s)
- Ruchika Dadhich
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India.
| | - Shobhna Kapoor
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India.
- Wadhwani Research Centre for Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India.
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36
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Garcia-Revilla J, Deierborg T, Venero JL, Boza-Serrano A. Hyperinflammation and Fibrosis in Severe COVID-19 Patients: Galectin-3, a Target Molecule to Consider. Front Immunol 2020; 11:2069. [PMID: 32973815 PMCID: PMC7461806 DOI: 10.3389/fimmu.2020.02069] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 07/29/2020] [Indexed: 12/13/2022] Open
Abstract
COVID-19 disease have become so far the most important sanitary crisis in the XXI century. In light of the events, any clinical resource should be considered to alleviate this crisis. Severe COVID-19 cases present a so-called cytokine storm as the most life-threatening symptom accompanied by lung fibrosis. Galectin-3 has been widely described as regulator of both processes. Hereby, we present compelling evidences on the potential role of galectin-3 in COVID-19 in the regulation of the inflammatory response, fibrosis and infection progression. Moreover, we provide a strong rationale of the utility of measuring plasma galectin-3 as a prognosis biomarker for COVID-19 patients and propose that inhibition of galectin-3 represents a feasible and promising new therapeutical approach.
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Affiliation(s)
- Juan Garcia-Revilla
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia and Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Seville, Spain
| | - Tomas Deierborg
- Department of Experimental Medical Science, Experimental Neuroinflammation Laboratory, BMC, Lund University, Lund, Sweden
| | - Jose Luis Venero
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia and Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Seville, Spain
| | - Antonio Boza-Serrano
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia and Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Seville, Spain.,Department of Experimental Medical Sciences, Experimental Dementia Research Laboratory, BMC, Lund University, Lund, Sweden
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37
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Shao S, Fang H, Li Q, Wang G. Extracellular vesicles in Inflammatory Skin Disorders: from Pathophysiology to Treatment. Am J Cancer Res 2020; 10:9937-9955. [PMID: 32929326 PMCID: PMC7481415 DOI: 10.7150/thno.45488] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 07/31/2020] [Indexed: 12/16/2022] Open
Abstract
Extracellular vesicles (EVs), naturally secreted by almost all known cell types into extracellular space, can transfer their bioactive cargos of nucleic acids and proteins to recipient cells, mediating cell-cell communication. Thus, they participate in many pathogenic processes including immune regulation, cell proliferation and differentiation, cell death, angiogenesis, among others. Cumulative evidence has shown the important regulatory effects of EVs on the initiation and progression of inflammation, autoimmunity, and cancer. In dermatology, recent studies indicate that EVs play key immunomodulatory roles in inflammatory skin disorders, including psoriasis, atopic dermatitis, lichen planus, bullous pemphigoid, systemic lupus erythematosus, and wound healing. Importantly, EVs can be used as biomarkers of pathophysiological states and/or therapeutic agents, both as carriers of drugs or even as a drug by themselves. In this review, we will summarize current research advances of EVs from different cells and their implications in inflammatory skin disorders, and further discuss their future applications, updated techniques, and challenges in clinical translational medicine.
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Iša P, Pérez-Delgado A, Quevedo IR, López S, Arias CF. Rotaviruses Associate with Distinct Types of Extracellular Vesicles. Viruses 2020; 12:v12070763. [PMID: 32708544 PMCID: PMC7411906 DOI: 10.3390/v12070763] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/27/2020] [Accepted: 06/29/2020] [Indexed: 12/29/2022] Open
Abstract
Rotaviruses are the leading cause of viral gastroenteritis among children under five years of age. Rotavirus cell entry has been extensively studied; however, rotavirus cell release is still poorly understood. Specifically, the mechanism by which rotaviruses leave the cell before cell lysis is not known. Previous works have found rotavirus proteins and viral particles associated with extracellular vesicles secreted by cells. These vesicles have been shown to contain markers of exosomes; however, in a recent work they presented characteristics more typical of microparticles, and they were associated with an increase in the infectivity of the virus. In this work, we purified different types of vesicles from rotavirus-infected cells. We analyzed the association of virus with these vesicles and their possible role in promotion of rotavirus infection. We confirmed a non-lytic rotavirus release from the two cell lines tested, and observed a notable stimulation of vesicle secretion following rotavirus infection. A fraction of the secreted viral particles present in the cell supernatant was protected from protease treatment, possibly through its association with membranous vesicles; the more pronounced association of the virus was with fractions corresponding to cell membrane generated microvesicles. Using electron microscopy, we found different size vesicles with particles resembling rotaviruses associated from both- the outside and the inside. The viral particles inside the vesicles were refractory to neutralization with a potent rotavirus neutralizing monoclonal antibody, and were able to infect cells even without trypsin activation. The association of rotavirus particles with extracellular vesicles suggests these might have a role in virus spread.
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Affiliation(s)
- Pavel Iša
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca CP 62210, Mexico; (A.P.-D.); (S.L.); (C.F.A.)
- Correspondence: ; Tel.: +52-777-3291612
| | - Arianna Pérez-Delgado
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca CP 62210, Mexico; (A.P.-D.); (S.L.); (C.F.A.)
| | - Iván R. Quevedo
- Departamento de Ingeniería Química Industrial y de Alimentos, Universidad Iberoamericana, Ciudad de México CP 01219, Mexico;
| | - Susana López
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca CP 62210, Mexico; (A.P.-D.); (S.L.); (C.F.A.)
| | - Carlos F. Arias
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca CP 62210, Mexico; (A.P.-D.); (S.L.); (C.F.A.)
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Kulkarni R, Jiang S, Birrane G, Prasad A. Lymphocyte-specific protein 1 (LSP1) regulates bone marrow stromal cell antigen 2 (BST-2)-mediated intracellular trafficking of HIV-1 in dendritic cells. FEBS Lett 2020; 594:1947-1959. [PMID: 32279313 DOI: 10.1002/1873-3468.13788] [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: 12/03/2019] [Revised: 03/19/2020] [Accepted: 03/20/2020] [Indexed: 02/06/2023]
Abstract
Human immunodeficiency virus type 1 (HIV-1) subverts intracellular trafficking pathways to avoid its degradation and elimination, thereby enhancing its survival and spread. The molecular mechanisms involved in intracellular transport of HIV-1 are not yet fully defined. We demonstrate that the actin-binding protein lymphocyte-specific protein 1 (LSP1) interacts with the interferon-inducible protein bone marrow stromal antigen 2 (BST-2) in dendritic cells (DCs) to facilitate both endocytosis of surface-bound HIV-1 and the formation of early endosomes. Analysis of the molecular interaction between LSP1 and BST-2 reveals that the N terminus of LSP1 interacts with BST-2. Overall, we identify a novel mechanism of intracellular trafficking of HIV-1 in DCs centering on the LSP1/BST-2 complex. We also show that the HIV-1 accessory protein Vpu subverts this pathway by inducing proteasomal degradation of LSP1, augmenting cell-cell transmission of HIV-1.
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Affiliation(s)
- Rutuja Kulkarni
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Shuxian Jiang
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Gabriel Birrane
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Anil Prasad
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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Amino Acid Deletions in p6 Gag Domain of HIV-1 CRF07_BC Ameliorate Galectin-3 Mediated Enhancement in Viral Budding. Int J Mol Sci 2020; 21:ijms21082910. [PMID: 32326345 PMCID: PMC7216183 DOI: 10.3390/ijms21082910] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/13/2020] [Accepted: 04/19/2020] [Indexed: 01/04/2023] Open
Abstract
HIV-1 CRF07_BC is a recombinant virus with amino acid (a.a.) deletions in p6Gag, which are overlapped with the Alix-binding domain. Galectin-3 (Gal3), a β-galactose binding lectin, has been reported to interact with Alix and regulate HIV-1 subtype B budding. This study aims to evaluate the role of Gal3 in HIV-1 CRF07_BC infection and the potential effect of a.a. deletions on Gal3-mediated regulation. A total of 38 HIV-1+ injecting drug users (IDUs) were enrolled in the study. Viral characterization and correlation of Gal3 were validated. CRF07_BC containing 7 a.a. deletions and wild-type in the p6Gag (CRF07_BC-7d and -wt) were isolated and infectious clones were generated. Viral growth kinetic and budding assays using Jurkat-CCR5/Jurkat-CCR5-Gal3 cells infected with CRF07_BC were performed. Results indicate that 69.4% (25/38) of the recruited patients were identified as CRF07_BC, and CRF07_BC-7d was predominant. Slow disease progression and significantly higher plasma Gal3 were noted in CRF07_BC patients (p < 0.01). Results revealed that CRF07_BC infection resulted in Gal3 expression, which was induced by Tat. Growth dynamic and budding assays indicated that Gal3 expression in Jurkat-CCR5 cells significantly enhanced CRF07_BC-wt replication and budding (p < 0.05), while the promoting effect was ameliorated in CRF07_BC-7d. Co-immunoprecipitation found that deletions in the p6Gag reduced Gal-3-mediated enhancement of the Alix–Gag interaction.
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Human Immunodeficiency Virus-Associated Exosomes Promote Kaposi's Sarcoma-Associated Herpesvirus Infection via the Epidermal Growth Factor Receptor. J Virol 2020; 94:JVI.01782-19. [PMID: 32051269 PMCID: PMC7163124 DOI: 10.1128/jvi.01782-19] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 02/06/2020] [Indexed: 12/12/2022] Open
Abstract
Kaposi’s sarcoma-associated herpesvirus (KSHV) is the causal agent for Kaposi’s sarcoma (KS), the most common malignancy in HIV/AIDS patients. Oral transmission through saliva is considered the most common route for spreading the virus among HIV/AIDS patients. However, the role of HIV-specific components in the cotransfection of KSHV is unclear. We demonstrate that exosomes purified from the saliva of HIV-positive patients and secreted by HIV-infected T-cell lines promote KSHV infectivity in immortalized and primary oral epithelial cells. HIV-associated exosomes promote KSHV infection, which depends on HIV trans-activation response element (TAR) RNA and EGFR of oral epithelial cells, which can be targeted for reducing KSHV infection. These results reveal that HIV-associated exosomes are a risk factor for KSHV infection in the HIV-infected population. Kaposi’s sarcoma-associated herpesvirus (KSHV) is the causal agent for Kaposi’s sarcoma (KS), the most common malignancy in people living with human immunodeficiency virus (HIV)/AIDS. The oral cavity is a major route for KSHV infection and transmission. However, how KSHV breaches the oral epithelial barrier for spreading to the body is not clear. Here, we show that exosomes purified from either the saliva of HIV-positive individuals or the culture supernatants of HIV-1-infected T-cell lines promote KSHV infectivity in immortalized and primary human oral epithelial cells. HIV-associated saliva exosomes contain the HIV trans-activation response element (TAR), Tat, and Nef RNAs but do not express Tat and Nef proteins. The TAR RNA in HIV-associated exosomes contributes to enhancing KSHV infectivity through the epidermal growth factor receptor (EGFR). An inhibitory aptamer against TAR RNA reduces KSHV infection facilitated by the synthetic TAR RNA in oral epithelial cells. Cetuximab, a monoclonal neutralizing antibody against EGFR, blocks HIV-associated exosome-enhanced KSHV infection. Our findings reveal that saliva containing HIV-associated exosomes is a risk factor for the enhancement of KSHV infection and that the inhibition of EGFR serves as a novel strategy for preventing KSHV infection and transmission in the oral cavity. IMPORTANCE Kaposi’s sarcoma-associated herpesvirus (KSHV) is the causal agent for Kaposi’s sarcoma (KS), the most common malignancy in HIV/AIDS patients. Oral transmission through saliva is considered the most common route for spreading the virus among HIV/AIDS patients. However, the role of HIV-specific components in the cotransfection of KSHV is unclear. We demonstrate that exosomes purified from the saliva of HIV-positive patients and secreted by HIV-infected T-cell lines promote KSHV infectivity in immortalized and primary oral epithelial cells. HIV-associated exosomes promote KSHV infection, which depends on HIV trans-activation response element (TAR) RNA and EGFR of oral epithelial cells, which can be targeted for reducing KSHV infection. These results reveal that HIV-associated exosomes are a risk factor for KSHV infection in the HIV-infected population.
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Nahand JS, Bokharaei-Salim F, Karimzadeh M, Moghoofei M, Karampoor S, Mirzaei HR, Tbibzadeh A, Jafari A, Ghaderi A, Asemi Z, Mirzaei H, Hamblin MR. MicroRNAs and exosomes: key players in HIV pathogenesis. HIV Med 2020; 21:246-278. [PMID: 31756034 PMCID: PMC7069804 DOI: 10.1111/hiv.12822] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/10/2019] [Indexed: 12/29/2022]
Abstract
OBJECTIVES HIV infection is well known to cause impairment of the human immune system, and until recently was a leading cause of death. It has been shown that T lymphocytes are the main targets of HIV. The virus inactivates T lymphocytes by interfering with a wide range of cellular and molecular targets, leading to suppression of the immune system. The objective of this review is to investigate to what extent microRNAs (miRNAs) are involved in HIV pathogenesis. METHODS The scientific literature (Pubmed and Google scholar) for the period 1988-2019 was searched. RESULTS Mounting evidence has revealed that miRNAs are involved in viral replication and immune response, whether by direct targeting of viral transcripts or through indirect modulation of virus-related host pathways. In addition, exosomes have been found to act as nanoscale carriers involved in HIV pathogenesis. These nanovehicles target their cargos (i.e. DNA, RNA, viral proteins and miRNAs) leading to alteration of the behaviour of recipient cells. CONCLUSIONS miRNAs and exosomes are important players in HIV pathogenesis. Additionally, there are potential diagnostic applications of miRNAs as biomarkers in HIV infection.
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Affiliation(s)
- Javid Sadri Nahand
- Department of Virology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Farah Bokharaei-Salim
- Department of Virology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Karimzadeh
- Department of Virology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohsen Moghoofei
- Department of Microbiology, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sajad Karampoor
- Department of Virology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Hamid Reza Mirzaei
- Department of Medical Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Tbibzadeh
- Department of Virology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Amir Jafari
- Department of Medical Nanotechnology, Faculty of Advanced Technology in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Amir Ghaderi
- Department of Addiction Studies, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, I.R. Iran
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, I.R. Iran
| | - Michael R. Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, 40 Blossom Street, Boston, MA, 02114, USA
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O’Hara BA, Morris-Love J, Gee GV, Haley SA, Atwood WJ. JC Virus infected choroid plexus epithelial cells produce extracellular vesicles that infect glial cells independently of the virus attachment receptor. PLoS Pathog 2020; 16:e1008371. [PMID: 32130281 PMCID: PMC7075641 DOI: 10.1371/journal.ppat.1008371] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 03/16/2020] [Accepted: 01/31/2020] [Indexed: 12/13/2022] Open
Abstract
The human polyomavirus, JCPyV, is the causative agent of progressive multifocal leukoencephalopathy (PML) in immunosuppressed and immunomodulated patients. Initial infection with JCPyV is common and the virus establishes a long-term persistent infection in the urogenital system of 50-70% of the human population worldwide. A major gap in the field is that we do not know how the virus traffics from the periphery to the brain to cause disease. Our recent discovery that human choroid plexus epithelial cells are fully susceptible to virus infection together with reports of JCPyV infection of choroid plexus in vivo has led us to hypothesize that the choroid plexus plays a fundamental role in this process. The choroid plexus is known to relay information between the blood and the brain by the release of extracellular vesicles. This is particularly important because human macroglia (oligodendrocytes and astrocytes), the major targets of virus infection in the central nervous system (CNS), do not express the known attachment receptors for the virus and do not bind virus in human tissue sections. In this report we show that JCPyV infected choroid plexus epithelial cells produce extracellular vesicles that contain JCPyV and readily transmit the infection to human glial cells. Transmission of the virus by extracellular vesicles is independent of the known virus attachment receptors and is not neutralized by antisera directed at the virus. We also show that extracellular vesicles containing virus are taken into target glial cells by both clathrin dependent endocytosis and macropinocytosis. Our data support the hypothesis that the choroid plexus plays a fundamental role in the dissemination of virus to brain parenchyma.
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Affiliation(s)
- Bethany A. O’Hara
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, United States of America
| | - Jenna Morris-Love
- Graduate Program in Pathobiology, Brown University, Providence, Rhode Island, United States of America
| | - Gretchen V. Gee
- MassBiologics, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Sheila A. Haley
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, United States of America
| | - Walter J. Atwood
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, United States of America
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Li FY, Wang SF, Bernardes ES, Liu FT. Galectins in Host Defense Against Microbial Infections. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1204:141-167. [DOI: 10.1007/978-981-15-1580-4_6] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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HENDERSON LJ, JOHNSON TP, SMITH BR, REOMA LB, SANTAMARIA UA, BACHANI M, DEMARINO C, BARCLAY RA, SNOW J, SACKTOR N, MCARTHUR J, LETENDRE S, STEINER J, KASHANCHI F, NATH A. Presence of Tat and transactivation response element in spinal fluid despite antiretroviral therapy. AIDS 2019; 33 Suppl 2:S145-S157. [PMID: 31789815 PMCID: PMC11032747 DOI: 10.1097/qad.0000000000002268] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE The aim of this study was to measure the protein concentration and biological activity of HIV-1 Tat in cerebrospinal fluid (CSF) of individuals on suppressive antiretroviral therapy (ART). DESIGN CSF was collected from 68 HIV-positive individuals on ART with plasma viral load less than 40 copies/ml, and from 25 HIV-negative healthy controls. Duration of HIV infection ranged from 4 to more than 30 years. METHODS Tat levels in CSF were evaluated by an ELISA. Tat protein and viral RNA were quantified from exosomes isolated from CSF, followed by western blot or quantitative reverse transcription PCR, respectively. Functional activity of Tat was assessed using an LTR transactivation assay. RESULTS Tat protein was detected in 36.8% of CSF samples from HIV-positive patients. CSF Tat concentration increased in four out of five individuals after initiation of therapy, indicating that Tat was not inhibited by ART. Similarly, exosomes from 34.4% of CSF samples were strongly positive for Tat protein and/or TAR RNA. Exosomal Tat retained transactivation activity in a CEM-LTR reporter assay in 66.7% of samples assayed, which indicates that over half of the Tat present in CSF is functional. Presence of Tat in CSF was highly associated with previous abuse of psychostimulants (cocaine or amphetamines; P = 0.01) and worse performance in the psychomotor speed (P = 0.04) and information processing (P = 0.02) cognitive domains. CONCLUSION Tat and TAR are produced in the central nervous system despite adequate ART and are packaged into CSF exosomes. Tat remains biologically active within this compartment. These studies suggest that Tat may be a quantifiable marker of the viral reservoir and highlight a need for new therapies that directly inhibit Tat.
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Affiliation(s)
- Lisa J. HENDERSON
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland
| | - Tory P. JOHNSON
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Bryan R. SMITH
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland
| | - Lauren Bowen REOMA
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland
| | - Ulisses A. SANTAMARIA
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland
| | - Muzna BACHANI
- Translational Neuroscience Center, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda Maryland
| | - Catherine DEMARINO
- Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Manassas Virginia
| | - Robert A. BARCLAY
- Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Manassas Virginia
| | - Joseph SNOW
- National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland
| | - Ned SACKTOR
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Justin MCARTHUR
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Scott LETENDRE
- University of California San Diego School of Medicine, Division of Infectious Diseases and Global Public Health, San Diego California
| | - Joseph STEINER
- Translational Neuroscience Center, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda Maryland
| | - Fatah KASHANCHI
- Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Manassas Virginia
| | - Avindra NATH
- Section of Infections of the Nervous System, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland
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Martín-Moreno A, Muñoz-Fernández MA. Dendritic Cells, the Double Agent in the War Against HIV-1. Front Immunol 2019; 10:2485. [PMID: 31708924 PMCID: PMC6820366 DOI: 10.3389/fimmu.2019.02485] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 10/04/2019] [Indexed: 12/19/2022] Open
Abstract
Human Immunodeficiency Virus (HIV) infects cells from the immune system and has thus developed tools to circumvent the host immunity and use it in its advance. Dendritic cells (DCs) are the first immune cells to encounter the HIV, and being the main antigen (Ag) presenting cells, they link the innate and the adaptive immune responses. While DCs work to promote an efficient immune response and halt the infection, HIV-1 has ways to take advantage of their role and uses DCs to gain faster and more efficient access to CD4+ T cells. Due to their ability to activate a specific immune response, DCs are promising candidates to achieve the functional cure of HIV-1 infection, but knowing the molecular partakers that determine the relationship between virus and cell is the key for the rational and successful design of a DC-based therapy. In this review, we summarize the current state of knowledge on how both DC subsets (myeloid and plasmacytoid DCs) act in presence of HIV-1, and focus on different pathways that the virus can take after binding to DC. First, we explore the consequences of HIV-1 recognition by each receptor on DCs, including CD4 and DC-SIGN. Second, we look at cellular mechanisms that prevent productive infection and weapons that turn cellular defense into a Trojan horse that hides the virus all the way to T cell. Finally, we discuss the possible outcomes of DC-T cell contact.
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Affiliation(s)
- Alba Martín-Moreno
- Sección de Inmunología, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain.,Instituto Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
| | - Mª Angeles Muñoz-Fernández
- Sección de Inmunología, Laboratorio InmunoBiología Molecular, Hospital General Universitario Gregorio Marañón (HGUGM), Madrid, Spain.,Instituto Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain.,Spanish HIV-HGM BioBank, Madrid, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER BBN), Madrid, Spain
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Barclay RA, Khatkar P, Mensah G, DeMarino C, Chu JSC, Lepene B, Zhou W, Gillevet P, Torkzaban B, Khalili K, Liotta L, Kashanchi F. An Omics Approach to Extracellular Vesicles from HIV-1 Infected Cells. Cells 2019; 8:cells8080787. [PMID: 31362387 PMCID: PMC6724219 DOI: 10.3390/cells8080787] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/25/2019] [Accepted: 07/26/2019] [Indexed: 01/08/2023] Open
Abstract
Human Immunodeficiency Virus-1 (HIV-1) is the causative agent of Acquired Immunodeficiency Syndrome (AIDS), infecting nearly 37 million people worldwide. Currently, there is no definitive cure, mainly due to HIV-1's ability to enact latency. Our previous work has shown that exosomes, a small extracellular vesicle, from uninfected cells can activate HIV-1 in latent cells, leading to increased mostly short and some long HIV-1 RNA transcripts. This is consistent with the notion that none of the FDA-approved antiretroviral drugs used today in the clinic are transcription inhibitors. Furthermore, these HIV-1 transcripts can be packaged into exosomes and released from the infected cell. Here, we examined the differences in protein and nucleic acid content between exosomes from uninfected and HIV-1-infected cells. We found increased cyclin-dependent kinases, among other kinases, in exosomes from infected T-cells while other kinases were present in exosomes from infected monocytes. Additionally, we found a series of short antisense HIV-1 RNA from the 3' LTR that appears heavily mutated in exosomes from HIV-1-infected cells along with the presence of cellular noncoding RNAs and cellular miRNAs. Both physical and functional validations were performed on some of the key findings. Collectively, our data indicate distinct differences in protein and RNA content between exosomes from uninfected and HIV-1-infected cells, which can lead to different functional outcomes in recipient cells.
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Affiliation(s)
- Robert A Barclay
- Laboratory of Molecular Virology, George Mason University, Manassas, VA 20110, USA
| | - Pooja Khatkar
- Laboratory of Molecular Virology, George Mason University, Manassas, VA 20110, USA
| | - Gifty Mensah
- Laboratory of Molecular Virology, George Mason University, Manassas, VA 20110, USA
| | - Catherine DeMarino
- Laboratory of Molecular Virology, George Mason University, Manassas, VA 20110, USA
| | - Jeffery S C Chu
- Applied Biological Materials Inc., 1-3671 Viking Way, Richmond, BC V6V 2J5, Canada
| | | | - Weidong Zhou
- Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA 20110, USA
| | - Patrick Gillevet
- Microbiome Analysis Center, George Mason University, Manassas, VA 20110, USA
| | - Bahareh Torkzaban
- Center for Neurovirology, Temple University, Philadelphia, PA 19122, USA
| | - Kamel Khalili
- Center for Neurovirology, Temple University, Philadelphia, PA 19122, USA
| | - Lance Liotta
- Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA 20110, USA
| | - Fatah Kashanchi
- Laboratory of Molecular Virology, George Mason University, Manassas, VA 20110, USA.
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Nijmeijer BM, Geijtenbeek TBH. Negative and Positive Selection Pressure During Sexual Transmission of Transmitted Founder HIV-1. Front Immunol 2019; 10:1599. [PMID: 31354736 PMCID: PMC6635476 DOI: 10.3389/fimmu.2019.01599] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 06/26/2019] [Indexed: 12/21/2022] Open
Abstract
Sexual transmission of HIV-1 consists of processes that exert either positive or negative selection pressure on the virus. The sum of these selection pressures lead to the transmission of only one specific HIV-1 strain, termed the transmitted founder virus. Different dendritic cell subsets are abundantly present at mucosal sites and, interestingly, these DC subsets exert opposite pressure on viral selection during sexual transmission. In this review we describe receptors and cellular compartments in DCs that are involved in HIV-1 communication leading to either viral restriction by the host or further dissemination to establish a long-lived reservoir. We discuss the current understanding of host antiretroviral restriction factors against HIV-1 and specifically against the HIV-1 transmitted founder virus. We will also discuss potential clinical implications for exploiting these intrinsic restriction factors in developing novel therapeutic targets. A better understanding of these processes might help in developing strategies against HIV-1 infections by targeting dendritic cells.
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Affiliation(s)
- Bernadien M Nijmeijer
- Department of Experimental Immunology, Amsterdam University Medical Centers, Amsterdam Infection and Immunity Institute, University of Amsterdam, Amsterdam, Netherlands
| | - Teunis B H Geijtenbeek
- Department of Experimental Immunology, Amsterdam University Medical Centers, Amsterdam Infection and Immunity Institute, University of Amsterdam, Amsterdam, Netherlands
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Morris-Love J, Gee GV, O'Hara BA, Assetta B, Atkinson AL, Dugan AS, Haley SA, Atwood WJ. JC Polyomavirus Uses Extracellular Vesicles To Infect Target Cells. mBio 2019; 10:e00379-19. [PMID: 30967463 PMCID: PMC6456752 DOI: 10.1128/mbio.00379-19] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 02/26/2019] [Indexed: 01/08/2023] Open
Abstract
The endemic human JC polyomavirus (JCPyV) causes progressive multifocal leukoencephalopathy in immune-suppressed patients. The mechanisms of virus infection in vivo are not understood because the major target cells for virus in the brain do not express virus receptors and do not bind virus. We found that JCPyV associates with extracellular vesicles (EVs) and can infect target cells independently of virus receptors. Virus particles were found packaged inside extracellular vesicles and attached to the outer side of vesicles. Anti-JCPyV antisera reduced infection by purified virus but had no effect on infection by EV-associated virus. Treatment of cells with the receptor-destroying enzyme neuraminidase inhibited infection with purified virus but did not inhibit infection by EV-associated virus. Mutant pseudoviruses defective in sialic acid receptor binding could not transduce cells as purified pseudovirions but could do so when associated with EVs. This alternative mechanism of infection likely plays a critical role in the dissemination and spread of JCPyV both to and within the central nervous system.IMPORTANCE JC polyomavirus (JCPyV) is a ubiquitous human pathogen that causes progressive multifocal leukoencephalopathy (PML), a severe and often fatal neurodegenerative disease in immunocompromised or immunomodulated patients. The mechanisms responsible for initiating infection in susceptible cells are not completely known. The major attachment receptor for the virus, lactoseries tetrasaccharide c (LSTc), is paradoxically not expressed on oligodendrocytes or astrocytes in human brain, and virus does not bind to these cells. Because these are the major cell types targeted by the virus in the brain, we hypothesized that alternative mechanisms of infection must be responsible. Here we provide evidence that JCPyV is packaged in extracellular vesicles from infected cells. Infection of target cells by vesicle-associated virus is not dependent on LSTc and is not neutralized by antisera directed against the virus. This is the first demonstration of a polyomavirus using extracellular vesicles as a means of transmission.
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Affiliation(s)
- Jenna Morris-Love
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, USA
- Graduate Program in Pathobiology, Brown University, Providence, Rhode Island, USA
| | - Gretchen V Gee
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, USA
| | - Bethany A O'Hara
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, USA
| | - Benedetta Assetta
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, USA
| | - Abigail L Atkinson
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, USA
| | - Aisling S Dugan
- Department of Natural Sciences, Assumption College, Worcester, Massachusetts, USA
| | - Sheila A Haley
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, USA
| | - Walter J Atwood
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, Rhode Island, USA
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Exosomal packaging of trans-activation response element (TAR) RNA by HIV-1 infected cells: a pro-malignancy message delivery to cancer cells. Mol Biol Rep 2019; 46:3607-3612. [PMID: 30903574 DOI: 10.1007/s11033-019-04770-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 03/15/2019] [Indexed: 02/07/2023]
Abstract
Driven by the heterogeneous and complex nature of HIV-1 infection and tumors, the possibilities of viable cross-talk are facilitated by the intra-cellular and inter-cellular signaling regimens. There are evidences that support the clear role of exosomes containing TAR RNAs that are secreted by HIV-1 infected cells and these TAR RNA brings pro-growth and pro-survival effects upon cancer cells. Recently, the regulatory role of TAR RNAs in the intra-cellular signaling network is shown that augments cancer cells to achieve tremendous progression and malignancy. In this paper, author highlights the role of HIV-1 infected cells secreted exosomes containing TAR RNA in tumor hallmarks. Further, this paper provides future insights on new classes of cancer therapeutics centered on disrupting exosomes and TAR RNA.
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