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Hernández-Flores KG, Calderón-Garcidueñas AL, Mellado-Sánchez G, Ruiz-Ramos R, Sánchez-Vargas LA, Thomas-Dupont P, Izaguirre-Hernández IY, Téllez-Sosa J, Martínez-Barnetche J, Wood L, Paterson Y, Cedillo-Barrón L, López-Franco O, Vivanco-Cid H. Evaluation of the safety and adjuvant effect of a detoxified listeriolysin O mutant on the humoral response to dengue virus antigens. Clin Exp Immunol 2017; 188:109-126. [PMID: 27886660 DOI: 10.1111/cei.12906] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2016] [Indexed: 01/14/2023] Open
Abstract
Listeriolysin O (LLO) has been proposed as a potential carrier or adjuvant molecule in the vaccination field. However, the cytotoxic and pro-apoptotic effects of LLO are the major limitations for this purpose. Here, we have performed a preclinical safety evaluation and characterized a new potential adjuvant application for a non-cytolytic LLO mutant (dtLLO) to enhance and modulate the immune response against the envelope (E) protein from dengue virus. In addition, we have studied the adjuvant effects of dtLLO on human immune cells and the role of membrane cholesterol for the binding and proinflammatory property of the toxoid. Our in-vivo results in the murine model confirmed that dtLLO is a safer molecule than wild-type LLO (wtLLO), with a significantly increased survival rate for mice challenged with dtLLO compared with mice challenged with wtLLO (P < 0·001). Histopathological analysis showed non-toxic effects in key target organs such as brain, heart, liver, spleen, kidney and lung after challenge with dtLLO. In vitro, dtLLO retained the capacity of binding to plasma membrane cholesterol on the surface of murine and human immune cells. Immunization of 6-8-week-old female BALB/c mice with a combination of dtLLO mixed with E protein elicited a robust specific humoral response with isotype diversification of immunoglobulin (Ig)G antibodies (IgG1 and IgG2a). Finally, we demonstrated that cholesterol and lipid raft integrity are required to induce a proinflammatory response by human cells. Taken together, these findings support a potential use of the dtLLO mutant as a safe and effective adjuvant molecule in vaccination.
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Affiliation(s)
- K G Hernández-Flores
- Instituto de Investigaciones Médico-Biológicas, Universidad Veracruzana, Veracruz City, Veracruz, México.,Doctorado en Ciencias Biomédicas, Centro de Investigaciones Biomédicas, Universidad Veracruzana, Xalapa Veracruz, México
| | | | - G Mellado-Sánchez
- Instituto de Investigaciones Médico-Biológicas, Universidad Veracruzana, Veracruz City, Veracruz, México
| | - R Ruiz-Ramos
- Instituto de Medicina Forense, Universidad Veracruzana, Boca del Río Veracruz, México
| | - L A Sánchez-Vargas
- Instituto de Investigaciones Médico-Biológicas, Universidad Veracruzana, Veracruz City, Veracruz, México.,Doctorado en Ciencias Biomédicas, Centro de Investigaciones Biomédicas, Universidad Veracruzana, Xalapa Veracruz, México
| | - P Thomas-Dupont
- Instituto de Investigaciones Médico-Biológicas, Universidad Veracruzana, Veracruz City, Veracruz, México.,Doctorado en Ciencias Biomédicas, Centro de Investigaciones Biomédicas, Universidad Veracruzana, Xalapa Veracruz, México
| | - I Y Izaguirre-Hernández
- Instituto de Investigaciones Médico-Biológicas, Universidad Veracruzana, Veracruz City, Veracruz, México.,Doctorado en Ciencias Biomédicas, Centro de Investigaciones Biomédicas, Universidad Veracruzana, Xalapa Veracruz, México
| | - J Téllez-Sosa
- Departamento de Inmunología, Instituto Nacional de Salud Pública (INSP), Centro de Investigación Sobre Enfermedades Infecciosas (CISEI), Cuernavaca, México
| | - J Martínez-Barnetche
- Departamento de Inmunología, Instituto Nacional de Salud Pública (INSP), Centro de Investigación Sobre Enfermedades Infecciosas (CISEI), Cuernavaca, México
| | - L Wood
- Department of Microbiology, University of Pennsylvania, Philadelphia, PA, USA
| | - Y Paterson
- Department of Microbiology, University of Pennsylvania, Philadelphia, PA, USA
| | - L Cedillo-Barrón
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados IPN, Ciudad de México, México
| | - O López-Franco
- Centro de Estudios y Servicios en Salud. Universidad Veracruzana, Veracruz City, Veracruz, México
| | - H Vivanco-Cid
- Instituto de Investigaciones Médico-Biológicas, Universidad Veracruzana, Veracruz City, Veracruz, México
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Izaguirre-Hernández IY, Mellado-Sánchez G, Mondragón-Vásquez K, Thomas-Dupont P, Sánchez-Vargas LA, Hernández-Flores KG, Mendoza-Barrera C, Altuzar V, Cedillo-Barrón L, Hernández-Flores KG, Mendoza-Barrera C, Altuzar V, Cedillo-Barrón L, Vivanco-Cid H. Non-Conjugated Chitosan-Based Nanoparticles to Proteic Antigens Elicit Similar Humoral Immune Responses to Those Obtained with Alum. J Nanosci Nanotechnol 2017; 17:846-852. [PMID: 29634187 DOI: 10.1166/jnn.2017.13067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Biodegradables Chitosan-based Nanoparticles (CS NPs) have been extensively studied as delivery system for therapeutic molecules and as efficient carriers or adjuvants in experimental vaccination. Physicochemical association between CS NPs and antigens is a key step for the biological function as carrier devices. However, for the adjuvant CS NPs property, it is not well known if coupling with vaccine antigens is required or not to potentiate the immune response. To address this issue, in this work, we evaluated the potential adjuvant effect of CS NPs by simply mixing with two different antigens such as Bovine Serum Albumin (BSA) or E protein from Dengue Virus serotype 2 (E protein DENV2). Thus the CS NPs were prepared by ionic gelation with sodium tripolyphosphate, resulting particles among 68 and 188 nm of size. Immunization of 6–8 week old female BALB/c mice, were carried out by intraperitoneal route with a simple combination of CS NPs either with BSA (CS NPs-BSA) at 10 μg or with E protein DENV2 (CS NPs-Protein E) at 5 μg. Combinations with the above antigens with CS NPs elicited robust specific primary and secondary humoral responses comparable to alum, a well-known adjuvant. BSA-specific IgG titers were detectable by day 14 after priming with the CS NPs-BSA formulation, with titers that ranged from 102 to 103 EU ml-. After a second immunization, the anti-BSA titers ranged around 104 EU ml-. In contrast, in the group of mice immunized with the protein alone, BSA-specific serum IgG titers were undetectable at day 14 and 28. For the immunizations with the CS NPs-E protein formulation, we observed also a remarkable specific-antibody production in the primary response, with titers reaching 103 EU ml-. After the booster immunization the anti-E protein DENV2 antibodies titers reached peak values around 104 EU ml-. Interestingly, for both antigens, the combination with CS NPs polarized the immune response to a Th2-like profile, which is characterized mainly by the production of the IgG1 Isotype, confirming that CS NPs can enhance and modulate the humoral immune responses against different antigens independently of physicochemical conjugation. This could represent a simplification in the use of CS NPs as adjuvants in vaccination.
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Sánchez-Vargas LA, Thomas-Dupont P, Torres-Aguilera M, Azamar-Jacome AA, Ramírez-Ceervanes KL, Aedo-Garcés MR, Meixueiro-Daza A, Roesch-Dietlen F, Grube-Pagola P, Vivanco-Cid H, Remes-Troche JM. Prevalence of celiac disease and related antibodies in patients diagnosed with irritable bowel syndrome according to the Rome III criteria. A case-control study. Neurogastroenterol Motil 2016; 28:994-1000. [PMID: 26914655 DOI: 10.1111/nmo.12799] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 01/21/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND The cost-effectiveness for screening for celiac disease (CD) in patients with irritable bowel syndrome (IBS), specifically in the diarrhea (IBS-D) subtype, is beneficial if the prevalence is >1%. However, recent studies have shown controversial results. In this large case-control study, our aim was to determine the prevalence of CD and a panel of related antibodies in patients diagnosed with IBS. MATERIALS AND METHODS Four hundred IBS patients (Rome III) and 400 asymptomatic healthy controls were prospectively evaluated using antihuman tissue transglutaminase (h-tTG IgA) and deamidated gliadin peptide antibodies (DGP II IgA and DGP II IgG). Duodenal biopsy was performed on the patients that were positive for the h-tTG IgA and/or DGP II IgG antibodies. RESULTS The mean age of the population was 44.47 ± 18.01 years and 335 (82%) of the subjects were women. Twenty-one patients and six controls had at least one positive test for CD (5.25% VS 1.5%, p = 0.003, OR 3.63 [95% CI 1.4-9.11]). Eighteen patients were positive for h-tTG and/or DGP-II IgG. Histologic confirmation of CD was 2.5% in the IBS patients vs 0.5% in the controls (p = 0.04, OR 5.21). The IBS-D subtype had the highest prevalence for serological positivity (12.7%). CONCLUSIONS Up to 5.2% of the patients with IBS according to the Rome III criteria were positive for at least one of the CD-related antibodies and 2.5% had biopsy-confirmed CD. Therefore, in our population, screening for CD in subjects with IBS appears to be a reasonable strategy, especially in the IBS-D subgroup.
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Affiliation(s)
- L A Sánchez-Vargas
- Gastrointestinal Motility and Digestive Physiology Laboratory, Medical and Biological Research Institute of the Universidad Veracruzana, Veracruz, Veracruz, Mexico.,Doctorate in Biomedical Sciences, Universidad Veracruzana, Xalapa, Veracruz, Mexico
| | - P Thomas-Dupont
- Gastrointestinal Motility and Digestive Physiology Laboratory, Medical and Biological Research Institute of the Universidad Veracruzana, Veracruz, Veracruz, Mexico.,Doctorate in Biomedical Sciences, Universidad Veracruzana, Xalapa, Veracruz, Mexico
| | - M Torres-Aguilera
- Gastrointestinal Motility and Digestive Physiology Laboratory, Medical and Biological Research Institute of the Universidad Veracruzana, Veracruz, Veracruz, Mexico
| | - A A Azamar-Jacome
- Gastrointestinal Motility and Digestive Physiology Laboratory, Medical and Biological Research Institute of the Universidad Veracruzana, Veracruz, Veracruz, Mexico
| | - K L Ramírez-Ceervanes
- Gastrointestinal Motility and Digestive Physiology Laboratory, Medical and Biological Research Institute of the Universidad Veracruzana, Veracruz, Veracruz, Mexico
| | - M R Aedo-Garcés
- Gastrointestinal Motility and Digestive Physiology Laboratory, Medical and Biological Research Institute of the Universidad Veracruzana, Veracruz, Veracruz, Mexico
| | - A Meixueiro-Daza
- Gastrointestinal Motility and Digestive Physiology Laboratory, Medical and Biological Research Institute of the Universidad Veracruzana, Veracruz, Veracruz, Mexico
| | - F Roesch-Dietlen
- Gastrointestinal Motility and Digestive Physiology Laboratory, Medical and Biological Research Institute of the Universidad Veracruzana, Veracruz, Veracruz, Mexico.,Faculty of Medicine Miguel Alemán Valdés, Veracruz, Veracruz, Mexico
| | - P Grube-Pagola
- Gastrointestinal Motility and Digestive Physiology Laboratory, Medical and Biological Research Institute of the Universidad Veracruzana, Veracruz, Veracruz, Mexico
| | - H Vivanco-Cid
- Gastrointestinal Motility and Digestive Physiology Laboratory, Medical and Biological Research Institute of the Universidad Veracruzana, Veracruz, Veracruz, Mexico
| | - J M Remes-Troche
- Gastrointestinal Motility and Digestive Physiology Laboratory, Medical and Biological Research Institute of the Universidad Veracruzana, Veracruz, Veracruz, Mexico.,Faculty of Medicine Miguel Alemán Valdés, Veracruz, Veracruz, Mexico
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Vivanco-Cid H, Maldonado-Rentería MJ, Sánchez-Vargas LA, Izaguirre-Hernández IY, Hernández-Flores KG, Remes-Ruiz R. Dynamics of interleukin-21 production during the clinical course of primary and secondary dengue virus infections. Immunol Lett 2014; 161:89-95. [PMID: 24858204 DOI: 10.1016/j.imlet.2014.05.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [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: 12/29/2013] [Revised: 04/22/2014] [Accepted: 05/07/2014] [Indexed: 12/12/2022]
Abstract
Previous studies have revealed the clinical relevance of pro-inflammatory cytokine production during dengue virus (DENV) infections. In this study, we evaluated the production of interleukin-21 (IL-21), a key soluble mediator mainly produced by CD4+ T cells. The aim of this study was to investigate the role of IL-21 production during the clinical course of primary and secondary DENV infections and the potential association of IL-21 serum levels with the disease pathogenesis. Blood samples from DENV-infected patients were collected on different days after the onset of symptoms. Patients were classified according to their phase of disease (acute vs. convalescent phases), the type of infection (primary vs. secondary), and the clinical severity of their disease (dengue fever (DF) vs. dengue hemorrhagic fever (DHF)). IL-21 levels were measured using a quantitative capture ELISA assay. The levels of IL-21 were significantly elevated in the disease group compared with the control group. IL-21 was detected in primary and secondary DENV infections, with a significantly higher concentration in the convalescent phase of primary infections. IL-21 levels were significantly higher in patients with secondary acute DHF infections when compared with those with secondary acute DF infection. There was a relationship between the elevated serum levels of IL-21 and the production of DENV-specific IgM and IgG antibodies. Taking together, our results show for the first time the involvement of IL-21 during the clinical course of DENV infections. We speculate that IL-21 may play a protective role in the context of the convalescent phase of primary infections and the acute phase of secondary infections.
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Affiliation(s)
- H Vivanco-Cid
- Instituto de Investigaciones Medico-Biológicas, Universidad Veracruzana, Veracruz, México; Universidad del Valle de México, campus Villa Rica, Facultad de Medicina "Dr. Porfirio Sosa Zárate", México.
| | - M J Maldonado-Rentería
- Instituto de Investigaciones Medico-Biológicas, Universidad Veracruzana, Veracruz, México
| | - L A Sánchez-Vargas
- Instituto de Investigaciones Medico-Biológicas, Universidad Veracruzana, Veracruz, México
| | | | - K G Hernández-Flores
- Instituto de Investigaciones Medico-Biológicas, Universidad Veracruzana, Veracruz, México
| | - R Remes-Ruiz
- Hospital Regional de Alta Especialidad de Veracruz, Servicios de Salud de Veracruz, México
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