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Dumonteil E, Tu W, Desale H, Goff K, Marx P, Ortega-Lopez J, Herrera C. Immunoglobulin and T cell receptor repertoire changes induced by a prototype vaccine against Chagas disease in naïve rhesus macaques. J Biomed Sci 2024; 31:58. [PMID: 38824576 PMCID: PMC11143712 DOI: 10.1186/s12929-024-01050-5] [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: 12/16/2023] [Accepted: 05/27/2024] [Indexed: 06/03/2024] Open
Abstract
BACKGROUND A vaccine against Trypanosoma cruzi, the agent of Chagas disease, would be an excellent additional tool for disease control. A recombinant vaccine based on Tc24 and TSA1 parasite antigens was found to be safe and immunogenic in naïve macaques. METHODS We used RNA-sequencing and performed a transcriptomic analysis of PBMC responses to vaccination of naïve macaques after each vaccine dose, to shed light on the immunogenicity of this vaccine and guide the optimization of doses and formulation. We identified differentially expressed genes and pathways and characterized immunoglobulin and T cell receptor repertoires. RESULTS RNA-sequencing analysis indicated a clear transcriptomic response of PBMCs after three vaccine doses, with the up-regulation of several immune cell activation pathways and a broad non-polarized immune profile. Analysis of the IgG repertoire showed that it had a rapid turnover with novel IgGs produced following each vaccine dose, while the TCR repertoire presented several persisting clones that were expanded after each vaccine dose. CONCLUSIONS These data suggest that three vaccine doses may be needed for optimum immunogenicity and support the further evaluation of the protective efficacy of this vaccine.
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Affiliation(s)
- Eric Dumonteil
- Department of Tropical Medicine and Infectious Disease, School of Public Health and Tropical Medicine, and Vector-Borne and Infectious Disease Research Center, Tulane University, 1440 Canal St, New Orleans, Louisiana, 70112, USA.
| | - Weihong Tu
- Department of Tropical Medicine and Infectious Disease, School of Public Health and Tropical Medicine, and Vector-Borne and Infectious Disease Research Center, Tulane University, 1440 Canal St, New Orleans, Louisiana, 70112, USA
| | - Hans Desale
- Department of Tropical Medicine and Infectious Disease, School of Public Health and Tropical Medicine, and Vector-Borne and Infectious Disease Research Center, Tulane University, 1440 Canal St, New Orleans, Louisiana, 70112, USA
| | - Kelly Goff
- Division of Microbiology, Tulane National Primate Research Center, Tulane University, Covington, LA, USA
| | - Preston Marx
- Department of Tropical Medicine and Infectious Disease, School of Public Health and Tropical Medicine, and Vector-Borne and Infectious Disease Research Center, Tulane University, 1440 Canal St, New Orleans, Louisiana, 70112, USA
- Division of Microbiology, Tulane National Primate Research Center, Tulane University, Covington, LA, USA
| | - Jaime Ortega-Lopez
- Departamento de Biotecnología y Bioingeniería, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de Mexico, México
| | - Claudia Herrera
- Department of Tropical Medicine and Infectious Disease, School of Public Health and Tropical Medicine, and Vector-Borne and Infectious Disease Research Center, Tulane University, 1440 Canal St, New Orleans, Louisiana, 70112, USA
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Herrera C, Bernabé KJ, Dumonteil E, DeCuir J, Thompson JM, Avendano M, Tu W, Leonhardt MM, Northland BA, Frederick J, Prieto B, Paternina-Caicedo A, Ortega E, Fonseca M, Hincapie M, Echeverri M. Assessment of Community Awareness and Screening of Chagas Disease in the Latin American Community of Greater New Orleans. Trop Med Infect Dis 2023; 8:515. [PMID: 38133447 PMCID: PMC10747578 DOI: 10.3390/tropicalmed8120515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/30/2023] [Accepted: 12/01/2023] [Indexed: 12/23/2023] Open
Abstract
Chagas disease is a public health problem in the Americas, from the southern United States (USA) to Argentina. In the USA, less than 1% of domestic cases have been identified and less than 0.3% of total cases have received treatment. Little is known about affected immigrant Latin American communities. A prospective study was conducted to assess knowledge about Chagas disease among the Latin American community living in the Greater New Orleans area. Participants answered a baseline questionnaire, viewed a short educational video presentation, completed a post-presentation questionnaire, and were screened with an FDA-approved blood rapid diagnostic test (RDT). A total of 154 participants from 18 Latin American countries (n = 138) and the USA (n = 16) were enrolled and screened for Trypanosoma cruzi infection. At baseline, 57% of the participants knew that Chagas disease is transmitted through an insect vector, and 26% recognized images of the vector. Following the administration of an educational intervention, the participants' knowledge regarding vector transmission increased to 91% and 35% of participants were able to successfully identify images of the vector. Five participants screened positive for T. cruzi infection, indicating a 3.24% [95%CI: 1.1-7.5%] prevalence of Trypanosoma cruzi infection within the Latin American community of the New Orleans area. Results highlight the urgent need for improving access to education and diagnostics of Chagas disease.
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Affiliation(s)
- Claudia Herrera
- Department of Tropical Medicine, Tulane University School of Public Health & Tropical Medicine, New Orleans, LA 70112, USA; (K.J.B.); (E.D.); (J.D.); (J.M.T.); (M.A.); (W.T.); (J.F.)
| | - Kerlly J. Bernabé
- Department of Tropical Medicine, Tulane University School of Public Health & Tropical Medicine, New Orleans, LA 70112, USA; (K.J.B.); (E.D.); (J.D.); (J.M.T.); (M.A.); (W.T.); (J.F.)
| | - Eric Dumonteil
- Department of Tropical Medicine, Tulane University School of Public Health & Tropical Medicine, New Orleans, LA 70112, USA; (K.J.B.); (E.D.); (J.D.); (J.M.T.); (M.A.); (W.T.); (J.F.)
| | - James DeCuir
- Department of Tropical Medicine, Tulane University School of Public Health & Tropical Medicine, New Orleans, LA 70112, USA; (K.J.B.); (E.D.); (J.D.); (J.M.T.); (M.A.); (W.T.); (J.F.)
| | - Julie M. Thompson
- Department of Tropical Medicine, Tulane University School of Public Health & Tropical Medicine, New Orleans, LA 70112, USA; (K.J.B.); (E.D.); (J.D.); (J.M.T.); (M.A.); (W.T.); (J.F.)
| | - Mariana Avendano
- Department of Tropical Medicine, Tulane University School of Public Health & Tropical Medicine, New Orleans, LA 70112, USA; (K.J.B.); (E.D.); (J.D.); (J.M.T.); (M.A.); (W.T.); (J.F.)
| | - Weihong Tu
- Department of Tropical Medicine, Tulane University School of Public Health & Tropical Medicine, New Orleans, LA 70112, USA; (K.J.B.); (E.D.); (J.D.); (J.M.T.); (M.A.); (W.T.); (J.F.)
| | - Maxwell M. Leonhardt
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA; (M.M.L.); (B.A.N.)
| | - Bianka A. Northland
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA; (M.M.L.); (B.A.N.)
| | - Jynx Frederick
- Department of Tropical Medicine, Tulane University School of Public Health & Tropical Medicine, New Orleans, LA 70112, USA; (K.J.B.); (E.D.); (J.D.); (J.M.T.); (M.A.); (W.T.); (J.F.)
| | - Bryn Prieto
- Department of Social, Behavioral, and Population Sciences, Tulane University School of Public Health & Tropical Medicine, New Orleans, LA 70112, USA;
| | - Angel Paternina-Caicedo
- Department of Epidemiology, Tulane University School of Public Health & Tropical Medicine, New Orleans, LA 70112, USA;
| | - Emma Ortega
- Office of Public Health-Infectious Disease Epidemiology, Louisiana Department of Health, New Orleans, LA 70802, USA;
| | - Maria Fonseca
- College of Pharmacy, Xavier University of Louisiana, New Orleans, LA 70125, USA; (M.F.); (M.H.); (M.E.)
| | - Marcela Hincapie
- College of Pharmacy, Xavier University of Louisiana, New Orleans, LA 70125, USA; (M.F.); (M.H.); (M.E.)
| | - Margarita Echeverri
- College of Pharmacy, Xavier University of Louisiana, New Orleans, LA 70125, USA; (M.F.); (M.H.); (M.E.)
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