1
|
Sarno A, Leite A, Augusto C, Muller I, de Ângelis L, Pimentel L, Queiroz A, Arruda S. Impaired macrophage and memory T-cell responses to Bacillus Calmette-Guerin nonpolar lipid extract. Front Immunol 2024; 14:1263352. [PMID: 38274831 PMCID: PMC10808680 DOI: 10.3389/fimmu.2023.1263352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 12/26/2023] [Indexed: 01/27/2024] Open
Abstract
Introduction The attenuation of BCG has led to the loss of not only immunogenic proteins but also lipid antigens. Methods Thus, we compared the macrophage and T-cell responses to nonpolar lipid extracts harvested from BCG and Mycobacterium tuberculosis (Mtb) to better understand the role of BCG lipids in the already known diminished responses of the vaccine strain. Results Relative to Mtb, nonpolar lipid extract from BCG presented a reduced capacity to trigger the expression of the genes encoding TNF, IL-1b, IL-6 and IL-10 in RAW 264.7 macrophages. Immunophenotyping of PBMCs isolated from healthy individuals revealed that lipids from both BCG and Mtb were able to induce an increased frequency of CD4+ and CD8+ T cells, but only the lipid extract from Mtb enhanced the frequency of CD4-CD8-double-negative, γσ+, CD4+HLA-DR+, and γσ+HLA-DR+ T cells relative to the nonstimulated control. Interestingly, only the Mtb lipid extract was able to increase the frequency of CD4+ memory (CD45RO+) T cells, whereas the BCG lipid extract induced a diminished frequency of CD4+ central memory (CD45RO+CCR7-) T cells after 48 h of culture compared to Mtb. Discussion These findings show that the nonpolar lipids of the BCG bacilli presented diminished ability to trigger both proinflammatory and memory responses and suggest a potential use of Mtb lipids as adjuvants to increase the BCG vaccine efficacy.
Collapse
Affiliation(s)
- Alice Sarno
- Advanced Laboratory of Public Health, Gonçalo Moniz Institute, Fiocruz, Salvador, Brazil
- Department of Pathology and Forensic Medicine, Faculty of Medicine, Federal University of Bahia, Salvador, Brazil
| | - Avelina Leite
- Advanced Laboratory of Public Health, Gonçalo Moniz Institute, Fiocruz, Salvador, Brazil
| | - Carlos Augusto
- Advanced Laboratory of Public Health, Gonçalo Moniz Institute, Fiocruz, Salvador, Brazil
| | - Igor Muller
- Advanced Laboratory of Public Health, Gonçalo Moniz Institute, Fiocruz, Salvador, Brazil
| | - Luanna de Ângelis
- Laboratory of Immunoepidemiology, Aggeu Magalhães Institute, Fiocruz, Recife, Brazil
| | - Lilian Pimentel
- Laboratory of Immunoepidemiology, Aggeu Magalhães Institute, Fiocruz, Recife, Brazil
| | - Adriano Queiroz
- Advanced Laboratory of Public Health, Gonçalo Moniz Institute, Fiocruz, Salvador, Brazil
| | - Sergio Arruda
- Advanced Laboratory of Public Health, Gonçalo Moniz Institute, Fiocruz, Salvador, Brazil
- Department of Life Sciences, State University of Bahia, Salvador, Brazil
| |
Collapse
|
2
|
Barreto-Duarte B, Sterling TR, Fiske CT, Almeida A, Nochowicz CH, Smith RM, Barnett L, Warren C, Blackman A, Lapa e Silva JR, Andrade BB, Kalams SA. Increased Frequency of Memory CD4+ T-Cell Responses in Individuals With Previously Treated Extrapulmonary Tuberculosis. Front Immunol 2020; 11:605338. [PMID: 33391271 PMCID: PMC7774017 DOI: 10.3389/fimmu.2020.605338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 09/12/2020] [Accepted: 11/13/2020] [Indexed: 11/13/2022] Open
Abstract
Extrapulmonary TB (EPTB) occurs with increased frequency in persons with underlying immunodeficiency. Even after recovery from acute illness, differences in immune phenotype and activation persist. Studies defining characteristics of immune responses after recovery from extrapulmonary TB may provide insights into factors that increase TB risk. We performed two case-control studies (in the United States and Brazil) among HIV-seronegative adults with previous EPTB (n = 9; 25), previous pulmonary TB (n = 7; 25), latent M. tuberculosis (Mtb) infection (n = 11; 25), and uninfected TB contacts (n = 10; 25). We assessed the frequency of dual CD4+ interferon-γ and tumor necrosis factor-α responses after stimulation with overlapping Mtb peptides from ESAT-6 or CFP-10, or gamma-irradiated Mtb H37Rv, proliferative responses to Mtb antigens, T-regulatory cell (Treg) frequency and phenotype. In both study populations, individuals with prior EPTB had the highest frequency of intracellular cytokine-producing cells in response to Mtb antigens (p < 0.05; p <.0001). Persons with prior EPTB in Brazil had the highest levels of CD4 proliferation to Mtb antigens (p < 0.0001), and the highest expression of CD39 on Tregs (p < 0.0001). Individuals with treated EPTB maintained high frequencies of Mtb-specific memory responses and active Treg cells, suggesting that susceptibility to EPTB occurs despite the ability to develop and maintain enhanced adaptive immune responses.
Collapse
Affiliation(s)
- Beatriz Barreto-Duarte
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Multinational Organization Network Sponsoring Translational and Epidemiological Research (MONSTER) Initiative, Salvador, Brazil
- Universidade Salvador (UNIFACS), Laureate Universities, Salvador, Brazil
- Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Timothy R. Sterling
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
- Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Christina T. Fiske
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
- Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Alexandre Almeida
- Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cynthia H. Nochowicz
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
- Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Rita M. Smith
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
- Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Louise Barnett
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
- Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Christian Warren
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
- Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Amondrea Blackman
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
- Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, Nashville, TN, United States
| | | | - Bruno B. Andrade
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil
- Multinational Organization Network Sponsoring Translational and Epidemiological Research (MONSTER) Initiative, Salvador, Brazil
- Universidade Salvador (UNIFACS), Laureate Universities, Salvador, Brazil
- Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Faculdade de Medicina, Universidade Federal da Bahia, Salvador, Brazil
- Curso de Medicina, Centro Universitário Faculdades de Tecnologia e Ciências (UniFTC), Salvador, Brazil
- Curso de Medicina, Escola Bahiana de Medicina e Saúde Pública, Salvador, Brazil
| | - Spyros A. Kalams
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
- Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, Nashville, TN, United States
| |
Collapse
|