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Shrivastava G, Visoso-Carvajal G, Garcia-Cordero J, Leon-Juarez M, Chavez-Munguia B, Lopez T, Nava P, Villegas-Sepulveda N, Cedillo-Barron L. Dengue Virus Serotype 2 and Its Non-Structural Proteins 2A and 2B Activate NLRP3 Inflammasome. Front Immunol 2020; 11:352. [PMID: 32210961 PMCID: PMC7076137 DOI: 10.3389/fimmu.2020.00352] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 02/13/2020] [Indexed: 12/12/2022] Open
Abstract
Dengue is the most prevalent and rapidly transmitted mosquito-borne viral disease of humans. One of the fundamental innate immune responses to viral infections includes the processing and release of pro-inflammatory cytokines such as interleukin (IL-1β and IL-18) through the activation of inflammasome. Dengue virus stimulates the Nod-like receptor (NLRP3-specific inflammasome), however, the specific mechanism(s) by which dengue virus activates the NLRP3 inflammasome is unknown. In this study, we investigated the activation of the NLRP3 inflammasome in endothelial cells (HMEC-1) following dengue virus infection. Our results showed that dengue infection as well as the NS2A and NS2B protein expression increase the NLRP3 inflammasome activation, and further apoptosis-associated speck-like protein containing caspase recruitment domain (ASC) oligomerization, and IL-1β secretion through caspase-1 activation. Specifically, we have demonstrated that NS2A and NS2B, two proteins of dengue virus that behave as putative viroporins, were sufficient to stimulate the NLRP3 inflammasome complex in lipopolysaccharide (LPS)-primed endothelial cells. In summary, our observations provide insight into the dengue-induced inflammatory response mechanism and highlight the importance of DENV-2 NS2A and NS2B proteins in activation of the NLRP3 inflammasome during dengue virus infection.
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Affiliation(s)
- Gaurav Shrivastava
- Departmento de Biomedicina Molecular Centro de Investigación y Estudios Avanzados-Instituto Politécnico Nacional, Mexico City, Mexico
| | - Giovani Visoso-Carvajal
- Departmento de Biomedicina Molecular Centro de Investigación y Estudios Avanzados-Instituto Politécnico Nacional, Mexico City, Mexico
| | - Julio Garcia-Cordero
- Departmento de Biomedicina Molecular Centro de Investigación y Estudios Avanzados-Instituto Politécnico Nacional, Mexico City, Mexico
| | - Moisés Leon-Juarez
- Departamento de Inmunobioquímica, Instituto Nacional de Perinatología, Mexico City, Mexico
| | - Bibiana Chavez-Munguia
- Departamento de Infectomica y Biologia Molecular, Centro de Investigación y Estudios Avanzados-Instituto Politécnico Nacional, Mexico City, Mexico
| | - Tomas Lopez
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, UNAM Cuernavaca, Cuernavaca, Mexico
| | - Porfirio Nava
- Departamento de Fisiologia, Biofisica y Neurociencias, Cinvestav Zacatenco, Mexico City, Mexico
| | - Nicolás Villegas-Sepulveda
- Departmento de Biomedicina Molecular Centro de Investigación y Estudios Avanzados-Instituto Politécnico Nacional, Mexico City, Mexico
| | - Leticia Cedillo-Barron
- Departmento de Biomedicina Molecular Centro de Investigación y Estudios Avanzados-Instituto Politécnico Nacional, Mexico City, Mexico
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López-González M, Meza-Sánchez D, García-Cordero J, Bustos-Arriaga J, Vélez-Del Valle C, Marsch-Moreno M, Castro-Jiménez T, Flores-Romo L, Santos-Argumedo L, Gutiérrez-Castañeda B, Cedillo-Barrón L. Human keratinocyte cultures (HaCaT) can be infected by DENV, triggering innate immune responses that include IFNλ and LL37. Immunobiology 2018; 223:608-617. [PMID: 30007822 DOI: 10.1016/j.imbio.2018.07.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 03/06/2018] [Accepted: 07/05/2018] [Indexed: 01/17/2023]
Abstract
The skin is the first anatomical region that dengue virus (DENV) encounters during the natural infection. Although the role of some skin resident cells like dendritic cells and fibroblasts has been demonstrated to be crucial to elucidate the role of resident cells and molecules participating during the early events of the innate immune response, the participation of keratinocytes during DENV infection has not been fully elucidated. In this paper we aimed to evaluate the use of the HaCaT cell line as a model to study the immune responses of skin keratinocytes to DENV infection. We demonstrated productive DENV-2 infection of HaCaT cells and their capability to establish an antiviral response through production of type I and type III interferons (IFN-β and IFN-λ). The production of these cytokines by HaCaT cells correlated with upregulation of IFN-inducible transmembrane protein-3 (IFITM3) and viperin in bystander, uninfected cells. We also observed an increase in secretion of IL-6 and IL-8. Skin keratinocytes are known to secrete antimicrobial peptides (AMPs) during viral infections. In our model, DENV-2 infected HaCaT cells upregulate the production of cytoplasmic LL-37. We evaluated the dual role of LL-37, HBD2, and HBD3 antiviral activity and immunoregulation during DENV-2 infection of HaCaT cells and found that LL-37 significantly reduced DENV-2 replication. This indicates that the HaCaT cell line can be used as a model for studying the innate response of keratinocytes to DENV infection. Our results also suggest that skin keratinocytes play an important role in the skin microenvironment after DENV infection by secreting molecules like type I and type III IFNs, pro-inflammatory molecules, and LL-37, which may contribute to the protection against arboviral infections.
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Affiliation(s)
- Moisés López-González
- Department of Molecular Biomedicine, Av. IPN # 2508 Col. San Pedro Zacatenco, 07360 México, D.F., Mexico; Department of Molecular Biosciences, Stockholm University, The Wenner-Gren Institute, Svante Arrhenius väg 20C, SE-106 91 Stockholm, Sweden
| | - David Meza-Sánchez
- Department of Molecular Biomedicine, Av. IPN # 2508 Col. San Pedro Zacatenco, 07360 México, D.F., Mexico
| | - Julio García-Cordero
- Department of Molecular Biomedicine, Av. IPN # 2508 Col. San Pedro Zacatenco, 07360 México, D.F., Mexico
| | - José Bustos-Arriaga
- Department of Molecular Biomedicine, Av. IPN # 2508 Col. San Pedro Zacatenco, 07360 México, D.F., Mexico; Biomedicine Unit (UBIMED), Av. De los Barrios s/n Los Reyes Iztacala, Tlalnepantla Edo, Mexico
| | - Cristina Vélez-Del Valle
- Department of Cellular Biology Center for Research and Advanced Studies (CINVESTAV-IPN), Av. IPN # 2508 Col. San Pedro Zacatenco, 07360 México, D.F., Mexico
| | - Meytha Marsch-Moreno
- Department of Cellular Biology Center for Research and Advanced Studies (CINVESTAV-IPN), Av. IPN # 2508 Col. San Pedro Zacatenco, 07360 México, D.F., Mexico
| | - Tannya Castro-Jiménez
- Biomedicine Unit (UBIMED), Av. De los Barrios s/n Los Reyes Iztacala, Tlalnepantla Edo, Mexico
| | - Leopoldo Flores-Romo
- Department of Cellular Biology Center for Research and Advanced Studies (CINVESTAV-IPN), Av. IPN # 2508 Col. San Pedro Zacatenco, 07360 México, D.F., Mexico
| | - Leopoldo Santos-Argumedo
- Department of Molecular Biomedicine, Av. IPN # 2508 Col. San Pedro Zacatenco, 07360 México, D.F., Mexico
| | - Benito Gutiérrez-Castañeda
- Immunology Department, UMF-FES Iztacala, Mexican Autonomous University, Av. De los Barrios s/n Los Reyes Iztacala, Tlalnepantla Edo, Mexico
| | - Leticia Cedillo-Barrón
- Department of Molecular Biomedicine, Av. IPN # 2508 Col. San Pedro Zacatenco, 07360 México, D.F., Mexico.
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Zaidi MB, Garcia-Cordero J, Rivero-Gomez R, Corzo-Gomez J, González y Almeida ME, Bonilla-Moreno R, Bustos-Arriaga J, Villegas-Sepulveda N, Flores-Romo L, Cedillo-Barron L. Competitive suppression of dengue virus replication occurs in chikungunya and dengue co-infected Mexican infants. Parasit Vectors 2018; 11:378. [PMID: 29970133 PMCID: PMC6029041 DOI: 10.1186/s13071-018-2942-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 06/07/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Co-circulation of dengue virus (DENV) and chikungunya virus (CHIKV) is increasing worldwide but information on the viral dynamics and immune response to DENV-CHIKV co-infection, particularly in young infants, is scant. METHODS Blood samples were collected from 24 patients, aged 2 months to 82 years, during a CHIKV outbreak in Mexico. DENV and CHIKV were identified by RT-PCR; ELISA was used to detect IgM and IgG antibodies. CHIKV PCR products were cloned, sequenced and subjected to BLAST analysis. To address serological findings, HMEC-1 and Vero cells were inoculated with DENV-1, DENV-2 and CHIKV alone and in combination (DENV-2-CHIKV and DENV-1-CHIKV); viral titers were measured at 24, 48 and 72 h. RESULTS Nine patients (38%) presented co-infection, of who eight were children. None of the patients presented severe illness. Sequence analysis showed that the circulating CHIKV virus belonged to the Asian lineage. Seroconversion to both viruses was only observed in the four patients five years or older, while the five infants under two years of age only seroconverted to CHIKV. Viral titers in the CHIKV mono-infected cells were greater than in the DENV-1 and DENV-2 mono-infected cells. Furthermore, we observed significantly increased CHIKV progeny and reduction of DENV progeny in the co-infected cells. CONCLUSIONS In our population, DENV-CHIKV co-infection was not associated with increased clinical severity. Our in vitro assay findings strongly suggest that the lack of DENV IgG conversion in the co-infected infants is due to suppression of DENV replication by the Asian lineage CHIKV. The presence of maternal antibody and immature immune responses in the young infants may also play a role.
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Affiliation(s)
- Mussaret B Zaidi
- Infectious Diseases Research Unit, Hospital General O’Horan, Merida, Mexico
- Department of Epidemiology and Biostatistics, Michigan State University, Lansing, USA
| | | | | | | | | | | | - José Bustos-Arriaga
- Molecular Biology and Arbovirus Immunology UBIMED FES Iztacala, Mexican National Autonomous University, Edo de Mexico, Mexico
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Bustos-Arriaga J, Gromowski GD, Tsetsarkin KA, Firestone CY, Castro-Jiménez T, Pletnev AG, Cedillo-Barrón L, Whitehead SS. Decreased accumulation of subgenomic RNA in human cells infected with vaccine candidate DEN4Δ30 increases viral susceptibility to type I interferon. Vaccine 2018; 36:3460-7. [PMID: 29752023 DOI: 10.1016/j.vaccine.2018.04.087] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/19/2018] [Accepted: 04/20/2018] [Indexed: 11/20/2022]
Abstract
The NIH has developed live attenuated dengue virus (DENV) vaccine candidates by deletion of 30 nucleotides (Δ30) from the untranslated region of the viral genome. Although this attenuation strategy has proven to be effective in generating safe and immunogenic vaccine strains, the molecular mechanism of attenuation is largely unknown. To examine the mediators of the observed attenuation phenotype, differences in translation efficiency, genome replication, cytotoxicity, and type I interferon susceptibility were compared between wild type parental DENV and DENVΔ30 attenuated vaccine candidates. We observed that decreased accumulation of subgenomic RNA (sfRNA) from the vaccine candidates in infected human cells causes increased type I IFN susceptibility and propose this as one of the of attenuation mechanisms produced by the 3' UTR Δ30 mutation.
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Rabelo K, Trugilho MRO, Costa SM, Pereira BAS, Moreira OC, Ferreira ATS, Carvalho PC, Perales J, Alves AMB. The effect of the dengue non-structural 1 protein expression over the HepG2 cell proteins in a proteomic approach. J Proteomics 2016; 152:339-354. [PMID: 27826075 DOI: 10.1016/j.jprot.2016.11.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 10/14/2016] [Accepted: 11/01/2016] [Indexed: 01/01/2023]
Abstract
Dengue is an important mosquito borne viral disease in the world. Dengue virus (DENV) encodes a polyprotein, which is cleaved in ten proteins, including the non-structural protein 1 (NS1). In this work, we analyzed the effect of NS1 expression in one hepatic cell line, HepG2, through a shotgun proteomic approach. Cells were transfected with pcENS1 plasmid, which encodes the DENV2 NS1 protein, or the controls pcDNA3 (negative control) and pMAXGFP (GFP, a protein unrelated to dengue). Expression of NS1 was detected by immunofluorescence, western blot and flow cytometry. We identified 14,138 peptides that mapped to 4,756 proteins in all analyzed conditions. We found 41 and 81 differentially abundant proteins when compared to cells transfected with plasmids pcDNA3 and pMAXGFP, respectively. Besides, 107 proteins were detected only in the presence of NS1. We identified clusters of proteins involved mainly in mRNA process and viral RNA replication. Down regulation expression of one protein (MARCKS), identified by the proteomic analysis, was also confirmed by real time PCR in HepG2 cells infected with DENV2. Identification of proteins modulated by the presence of NS1 may improve our understanding of its role in virus infection and pathogenesis, contributing to development of new therapies and vaccines. BIOLOGICAL SIGNIFICANCE Dengue is an important viral disease, with epidemics in tropical and subtropical regions of the world. The disease is complex, with different manifestations, in which the liver is normally affected. The NS1 is found in infected cells associated with plasma membrane and secreted into the circulation as a soluble multimer. This protein is essential for virus viability, although its function is not elucidated. Some reports indicate that the NS1 can be used as a protective antigen for the development of a dengue vaccine, while others suggest its involvement in viral pathogenesis. In this work, we report an in-depth comprehensive proteomic profiling resulting from the presence of NS1 in HepG2 cells. These results can contribute to a better understanding of the NS1 role during infection.
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Affiliation(s)
- Kíssila Rabelo
- Laboratory of Biotechnology and Physiology of Viral Infections, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil
| | - Monique R O Trugilho
- Laboratory of Toxinology, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil
| | - Simone M Costa
- Laboratory of Biotechnology and Physiology of Viral Infections, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil
| | - Bernardo A S Pereira
- Laboratory of Biotechnology and Physiology of Viral Infections, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil
| | - Otacílio C Moreira
- Laboratory of Molecular Biology and Endemic Diseases, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil
| | - André T S Ferreira
- Laboratory of Toxinology, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil
| | - Paulo C Carvalho
- Laboratory for Proteomics and Protein Engineering, Carlos Chagas Institute, Fiocruz, Paraná, Brazil
| | - Jonas Perales
- Laboratory of Toxinology, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil
| | - Ada M B Alves
- Laboratory of Biotechnology and Physiology of Viral Infections, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil.
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Kong N, Guo L, Guan D, Liu L, Kuang H, Xu C. An Ultrasensitive ELISA for Medroxyprogesterone Residues in Fish Tissues Based on a Structure-Specific Hapten. FOOD ANAL METHOD 2015; 8:1382-9. [DOI: 10.1007/s12161-014-0023-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Rittenhouse-Olson K. Letter from the editor: immunological Investigations. Immunol Invest 2014; 43:727-33. [PMID: 25296230 DOI: 10.3109/08820139.2014.962855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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García Cordero J, León Juárez M, González-Y-Merchand JA, Cedillo Barrón L, Gutiérrez Castañeda B. Caveolin-1 in lipid rafts interacts with dengue virus NS3 during polyprotein processing and replication in HMEC-1 cells. PLoS One 2014; 9:e90704. [PMID: 24643062 PMCID: PMC3958351 DOI: 10.1371/journal.pone.0090704] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 01/18/2014] [Indexed: 01/10/2023] Open
Abstract
Lipid rafts are ordered microdomains within cellular membranes that are rich in cholesterol and sphingolipids. Caveolin (Cav-1) and flotillin (Flt-1) are markers of lipid rafts, which serve as an organizing center for biological phenomena and cellular signaling. Lipid rafts involvement in dengue virus (DENV) processing, replication, and assembly remains poorly characterized. Here, we investigated the role of lipid rafts after DENV endocytosis in human microvascular endothelial cells (HMEC-1). The non-structural viral proteins NS3 and NS2B, but not NS5, were associated with detergent-resistant membranes. In sucrose gradients, both NS3 and NS2B proteins appeared in Cav-1 and Flt-1 rich fractions. Additionally, double immunofluorescence staining of DENV-infected HMEC-1 cells showed that NS3 and NS2B, but not NS5, colocalized with Cav-1 and Flt-1. Furthermore, in HMEC-1cells transfected with NS3 protease, shown a strong overlap between NS3 and Cav-1, similar to that in DENV-infected cells. In contrast, double-stranded viral RNA (dsRNA) overlapped weakly with Cav-1 and Flt-1. Given these results, we investigated whether Cav-1 directly interacted with NS3. Cav-1 and NS3 co-immunoprecipitated, indicating that they resided within the same complex. Furthermore, when cellular cholesterol was depleted by methyl-beta cyclodextrin treatment after DENV entrance, lipid rafts were disrupted, NS3 protein level was reduced, besides Cav-1 and NS3 were displaced to fractions 9 and 10 in sucrose gradient analysis, and we observed a dramatically reduction of DENV particles release. These data demonstrate the essential role of caveolar cholesterol-rich lipid raft microdomains in DENV polyprotein processing and replication during the late stages of the DENV life cycle.
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Affiliation(s)
- Julio García Cordero
- Departamento de Biomedicina Molecular, Centro de Investigación y Estudios Avanzados del IPN, México City, México
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas IPN, México City, México
| | - Moisés León Juárez
- Departamento de Biomedicina Molecular, Centro de Investigación y Estudios Avanzados del IPN, México City, México
| | | | - Leticia Cedillo Barrón
- Departamento de Biomedicina Molecular, Centro de Investigación y Estudios Avanzados del IPN, México City, México
- * E-mail: (BGC); (LCB)
| | - Benito Gutiérrez Castañeda
- Laboratorio de Inmunología, Facultad de Estudios Superiores Iztacala Universidad Autónoma de México, Tlalnepantla Estado de México, México
- * E-mail: (BGC); (LCB)
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