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Rouers A, Wong N, Goh YS, Torres‐Ruesta A, Tay MZ, Chang ZW, Fong S, Neo V, Kam IKJ, Yeo NK, Huang Y, Loh CY, Hor PX, Wong JXE, Tan YJ, Macary PA, Qian X, Bei W, Ngoh EZX, Salleh SNM, Wang CI, Poh XY, Rao S, Chia PY, Ong SWX, Lee TH, Lin RJH, Lim C, Teo J, Ren EC, Lye DC, Young BE, Ng LFP, Renia L. Efficient recall of SARS-CoV-2 variant-reactive B cells and T responses in the elderly upon heterologous mRNA vaccines as boosters. J Med Virol 2023; 95:e28258. [PMID: 36305052 PMCID: PMC9874655 DOI: 10.1002/jmv.28258] [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: 07/07/2022] [Revised: 08/30/2022] [Accepted: 10/25/2022] [Indexed: 01/27/2023]
Abstract
Waning antibody levels against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and the emergence of variants of concern highlight the need for booster vaccinations. This is particularly important for the elderly population, who are at a higher risk of developing severe coronavirus disease 2019 (COVID-19) disease. While studies have shown increased antibody responses following booster vaccination, understanding the changes in T and B cell compartments induced by a third vaccine dose remains limited. We analyzed the humoral and cellular responses in subjects who received either a homologous messenger RNA(mRNA) booster vaccine (BNT162b2 + BNT162b2 + BNT162b2; ''BBB") or a heterologous mRNA booster vaccine (BNT162b2 + BNT162b2 + mRNA-1273; ''BBM") at Day 0 (prebooster), Day 7, and Day 28 (postbooster). Compared with BBB, elderly individuals (≥60 years old) who received the BBM vaccination regimen display higher levels of neutralizing antibodies against the Wuhan and Delta strains along with a higher boost in immunoglobulin G memory B cells, particularly against the Omicron variant. Circulating T helper type 1(Th1), Th2, Th17, and T follicular helper responses were also increased in elderly individuals given the BBM regimen. While mRNA vaccines increase antibody, T cell, and B cell responses against SARS-CoV-2 1 month after receiving the third dose booster, the efficacy of the booster vaccine strategies may vary depending on age group and regimen combination.
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Affiliation(s)
- Angeline Rouers
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Nathan Wong
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Yun Shan Goh
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Anthony Torres‐Ruesta
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Matthew Zirui Tay
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Zi Wei Chang
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Siew‐Wai Fong
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Vanessa Neo
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Isaac Kai Jie Kam
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Nicholas Kim‐Wah Yeo
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Yuling Huang
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Chiew Yee Loh
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Pei Xiang Hor
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Joel Xu En Wong
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Yong Jie Tan
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - COVID‐19 Study Group
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Paul A. Macary
- Department of Microbiology and Immunology, Yong Loo Lin School of MedicineNational University of Singapore and National University Health SystemSingaporeSingapore
| | - Xinlei Qian
- Life Sciences InstituteNational University of SingaporeSingaporeSingapore
| | - Wang Bei
- A*STAR Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Eve Zi Xian Ngoh
- A*STAR Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Siti Nazihah Mohd Salleh
- A*STAR Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Cheng-I Wang
- A*STAR Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | | | - Suma Rao
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore
| | - Po Ying Chia
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore,Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore
| | - Sean W. X. Ong
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore
| | - Tau Hong Lee
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore
| | - Ray J. H. Lin
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore
| | - Clarissa Lim
- National Centre for Infectious DiseasesSingapore
| | - Jefanie Teo
- National Centre for Infectious DiseasesSingapore
| | - Ee Chee Ren
- A*STAR Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - David Chien Lye
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore,Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore,School of Biological SciencesNanyang Technological UniversitySingapore
| | - Barnaby E. Young
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore,Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore
| | - Lisa F. P. Ng
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore,National Institute of Health Research, Health Protection Research Unit in Emerging and Zoonotic InfectionsUniversity of LiverpoolLiverpoolUK,Institute of Infection, Veterinary and Ecological SciencesUniversity of LiverpoolLiverpoolUK
| | - Laurent Renia
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore,Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore,School of Biological SciencesNanyang Technological UniversitySingapore
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Expression of Cytokine Profiles in Human THP-1 Cells during Phase Transition of Talaromyces marneffei. Pathogens 2022; 11:pathogens11121465. [PMID: 36558799 PMCID: PMC9783046 DOI: 10.3390/pathogens11121465] [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: 10/13/2022] [Revised: 11/25/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
Talaromyces marneffei, a dimorphic fungus, exhibits temperature-dependent growth, existing in a filamentous form at 25 °C and as a yeast at 37 °C. Several studies have highlighted the important roles of macrophages in defense against T. marneffei infection. However, the immune responses to the interaction of macrophages with T. marneffei cells during phase transition require further investigation. This study reports the expression of cytokine profiles in human THP-1 cells during infection by T. marneffei. THP-1 cells were infected with T. marneffei conidia at different multiplicity of infections (MOIs). Surviving conidia transformed into yeasts after phagocytosis by macrophages, and the number of yeasts gradually increased over 36 h. The transcription and secretion levels of pro- and anti-inflammatory cytokines were examined at different times by qRT-PCR and ELISA. Transcription levels of IL-8, IL-12, IL-1β, and TNF-α increased significantly at 12 or 24 h and then slightly decreased at 36 h. In contrast, the transcription levels of IL-6, IL-10, and TGF-β gradually increased at all MOIs. The levels of IL-6 and IL-10 secretion corresponded to their levels of transcription. These results indicated that as the number of intracellular yeasts increased, the infected macrophages first underwent slight M1 polarization before shifting to M2 polarization. This polarization transition was confirmed by the fungicidal ability and the expression of macrophage surface markers. By inducing the M2-type polarization of macrophages, the intracellular T. marneffei cells can successfully evade the immune response. Our study provides a novel insight into the immune characterization during the transition of T. marneffei infection and could further contribute to possible diagnostic and therapeutic interventions for this infection.
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Atalis A, Keenum MC, Pandey B, Beach A, Pradhan P, Vantucci C, O'Farrell L, Noel R, Jain R, Hosten J, Smith C, Kramer L, Jimenez A, Ochoa MA, Frey D, Roy K. Nanoparticle-delivered TLR4 and RIG-I agonists enhance immune response to SARS-CoV-2 subunit vaccine. J Control Release 2022; 347:476-488. [PMID: 35577151 PMCID: PMC9121740 DOI: 10.1016/j.jconrel.2022.05.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 04/04/2022] [Accepted: 05/10/2022] [Indexed: 01/25/2023]
Abstract
Despite success in vaccinating populations against SARS-CoV-2, concerns about immunity duration, continued efficacy against emerging variants, protection from infection and transmission, and worldwide vaccine availability remain. Molecular adjuvants targeting pattern recognition receptors (PRRs) on antigen-presenting cells (APCs) could improve and broaden the efficacy and durability of vaccine responses. Native SARS-CoV-2 infection stimulates various PRRs, including toll-like receptors (TLRs) and retinoic acid-inducible gene I (RIG-I)-like receptors. We hypothesized that targeting PRRs using molecular adjuvants on nanoparticles (NPs) along with a stabilized spike protein antigen could stimulate broad and efficient immune responses. Adjuvants targeting TLR4 (MPLA), TLR7/8 (R848), TLR9 (CpG), and RIG-I (PUUC) delivered on degradable polymer NPs were combined with the S1 subunit of spike protein and assessed in vitro with isogeneic mixed lymphocyte reactions (isoMLRs). For in vivo studies, the adjuvant-NPs were combined with stabilized spike protein or spike-conjugated NPs and assessed using a two-dose intranasal or intramuscular vaccination model in mice. Combination adjuvant-NPs simultaneously targeting TLR and RIG-I receptors (MPLA+PUUC, CpG+PUUC, and R848+PUUC) differentially induced T cell proliferation and increased proinflammatory cytokine secretion by APCs in vitro. When delivered intranasally, MPLA+PUUC NPs enhanced CD4+CD44+ activated memory T cell responses against spike protein in the lungs while MPLA NPs increased anti-spike IgA in the bronchoalveolar (BAL) fluid and IgG in the blood. Following intramuscular delivery, PUUC NPs induced strong humoral immune responses, characterized by increases in anti-spike IgG in the blood and germinal center B cell populations (GL7+ and BCL6+ B cells) in the draining lymph nodes (dLNs). MPLA+PUUC NPs further boosted spike protein-neutralizing antibody titers and T follicular helper cell populations in the dLNs. These results suggest that protein subunit vaccines with particle-delivered molecular adjuvants targeting TLR4 and RIG-I could lead to robust and unique route-specific adaptive immune responses against SARS-CoV-2.
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Affiliation(s)
- Alexandra Atalis
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Mark C Keenum
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Bhawana Pandey
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Alexander Beach
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Pallab Pradhan
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA; Marcus Center for Therapeutic Cell Characterization and Manufacturing, Georgia Institute of Technology, Atlanta, GA, USA; The Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA
| | - Casey Vantucci
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Laura O'Farrell
- Physiological Research Laboratory, Georgia Institute of Technology, Atlanta, GA, USA
| | - Richard Noel
- Physiological Research Laboratory, Georgia Institute of Technology, Atlanta, GA, USA
| | - Ritika Jain
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Justin Hosten
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Clinton Smith
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Liana Kramer
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Angela Jimenez
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Miguel Armenta Ochoa
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - David Frey
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Krishnendu Roy
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA; Marcus Center for Therapeutic Cell Characterization and Manufacturing, Georgia Institute of Technology, Atlanta, GA, USA; The Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA.
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4
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Atalis A, Keenum MC, Pandey B, Beach A, Pradhan P, Vantucci C, Jain R, Hosten J, Smith C, Kramer L, Jimenez A, Ochoa MA, Frey D, Roy K. Nanoparticle-delivered TLR4 and RIG-I agonists enhance immune response to SARS-CoV-2 subunit vaccine. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2022:2022.01.31.478507. [PMID: 35132413 PMCID: PMC8820660 DOI: 10.1101/2022.01.31.478507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Despite recent success in vaccinating populations against SARS-CoV-2, concerns about immunity duration, continued efficacy against emerging variants, protection from infection and transmission, and worldwide vaccine availability, remain. Although mRNA, pDNA, and viral-vector based vaccines are being administered, no protein subunit-based SARS-CoV-2 vaccine is approved. Molecular adjuvants targeting pathogen-recognition receptors (PRRs) on antigen-presenting cells (APCs) could improve and broaden the efficacy and durability of vaccine responses. Native SARS-CoV-2 infection stimulate various PRRs, including toll-like receptors (TLRs) and retinoic-acid-inducible gene I-like receptors (RIG-I). We hypothesized that targeting the same PRRs using adjuvants on nanoparticles along with a stabilized spike (S) protein antigen could provide broad and efficient immune responses. Formulations targeting TLR4 (MPLA), TLR7/8 (R848), TLR9 (CpG), and RIG-I (PUUC) delivered on degradable polymer-nanoparticles (NPs) were combined with the S1 subunit of S protein and assessed in vitro with isogeneic mixed lymphocyte reactions (iso-MLRs). For in vivo studies, the adjuvanted nanoparticles were combined with stabilized S protein and assessed using intranasal and intramuscular prime-boost vaccination models in mice. Combination NP-adjuvants targeting both TLR and RIG-I (MPLA+PUUC, CpG+PUUC, or R848+PUUC) differentially increased proinflammatory cytokine secretion (IL-1β, IL-12p70, IL-27, IFN-β) by APCs cultured in vitro, and induced differential T cell proliferation. When delivered intranasally, MPLA+PUUC NPs enhanced local CD4+CD44+ activated memory T cell responses while MPLA NPs increased anti-S-protein-specific IgG and IgA in the lung. Following intramuscular delivery, PUUC-carrying NPs induced strong humoral immune responses, characterized by increases in anti-S-protein IgG and neutralizing antibody titers and germinal center B cell populations (GL7+ and BCL6+ B cells). MPLA+PUUC NPs further boosted S-protein-neutralizing antibody titers and T follicular helper cell populations in draining lymph nodes. These results suggest that SARS-CoV-2-mimicking adjuvants and subunit vaccines could lead to robust and unique route-specific adaptive immune responses and may provide additional tools against the pandemic.
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El Ahdab N, Haque M, Madogwe E, Koski KG, Scott ME. Maternal nematode infection upregulates expression of Th2/Treg and diapedesis related genes in the neonatal brain. Sci Rep 2021; 11:22082. [PMID: 34764345 PMCID: PMC8585879 DOI: 10.1038/s41598-021-01510-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 10/26/2021] [Indexed: 11/28/2022] Open
Abstract
Intestinal nematode infections common during pregnancy have recently been shown to have impacts that extend to their uninfected offspring including altered brain gene expression. If maternal immune signals reach the neonatal brain, they might alter neuroimmune development. We explored expression of genes associated with four distinct types of T cells (Th1, Th2, Th17, Treg) and with leukocyte transendothelial migration and endocytosis transport across the blood–brain barrier (BBB) in the postnatal brain of offspring of nematode-infected mice, through secondary analysis of a whole brain gene expression database. Th1/Th17 expression was lowered by maternal infection as evidenced by down-regulated expression of IL1β, Th1 receptors and related proteins, and of IL22 and several Th17 genes associated with immunopathology. In contrast, Th2/Treg related pathways were upregulated as shown by higher expression of IL4 and TGF-β family genes. Maternal infection also upregulated expression of pathways and integrin genes involved in transport of leukocytes in between endothelial cells but downregulated endosome vesicle formation related genes that are necessary for endocytosis of immunoglobulins across the BBB. Taken together, pup brain gene expression indicates that maternal nematode infection enhanced movement of leukocytes across the neonatal BBB and promoted a Th2/Treg environment that presumably minimizes the proinflammatory Th1 response in the pup brain.
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Affiliation(s)
- Nawal El Ahdab
- Institute of Parasitology, McGill University (Macdonald Campus), 21,111 Lakeshore Road, Ste-Anne de Bellevue, QC, H9X 3V9, Canada
| | - Manjurul Haque
- Institute of Parasitology, McGill University (Macdonald Campus), 21,111 Lakeshore Road, Ste-Anne de Bellevue, QC, H9X 3V9, Canada
| | - Ejimedo Madogwe
- Department of Animal Science, McGill University (Macdonald Campus), 21,111 Lakeshore Road, Ste-Anne de Bellevue, QC, H9X 3V9, Canada
| | - Kristine G Koski
- School of Human Nutrition, McGill University (Macdonald Campus), 21,111 Lakeshore Road, Ste-Anne de Bellevue, QC, H9X 3V9, Canada
| | - Marilyn E Scott
- Institute of Parasitology, McGill University (Macdonald Campus), 21,111 Lakeshore Road, Ste-Anne de Bellevue, QC, H9X 3V9, Canada.
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Al-Suhaimi EA, Aljafary MA, Alkhulaifi FM, Aldossary HA, Alshammari T, AL-Qaaneh A, Aldahhan R, Alkhalifah Z, Gaymalov ZZ, Shehzad A, Homeida AM. Thymus Gland: A Double Edge Sword for Coronaviruses. Vaccines (Basel) 2021; 9:vaccines9101119. [PMID: 34696231 PMCID: PMC8539924 DOI: 10.3390/vaccines9101119] [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: 09/07/2021] [Revised: 09/23/2021] [Accepted: 09/25/2021] [Indexed: 02/06/2023] Open
Abstract
The thymus is the main lymphoid organ that regulates the immune and endocrine systems by controlling thymic cell proliferation and differentiation. The gland is a primary lymphoid organ responsible for generating mature T cells into CD4+ or CD8+ single-positive (SP) T cells, contributing to cellular immunity. Regarding humoral immunity, the thymic plasma cells almost exclusively secrete IgG1 and IgG3, the two main complement-fixing effector IgG subclasses. Deformity in the thymus can lead to inflammatory diseases. Hassall’s corpuscles’ epithelial lining produces thymic stromal lymphopoietin, which induces differentiation of CDs thymocytes into regulatory T cells within the thymus medulla. Thymic B lymphocytes produce immunoglobulins and immunoregulating hormones, including thymosin. Modulation in T cell and naive T cells decrement due to thymus deformity induce alteration in the secretion of various inflammatory factors, resulting in multiple diseases. Influenza virus activates thymic CD4+ CD8+ thymocytes and a large amount of IFNγ. IFNs limit virus spread, enhance macrophages’ phagocytosis, and promote the natural killer cell restriction activity against infected cells. Th2 lymphocytes-produced cytokine IL-4 can bind to antiviral INFγ, decreasing the cell susceptibility and downregulating viral receptors. COVID-19 epitopes (S, M, and N proteins) with ≥90% identity to the SARS-CoV sequence have been predicted. These epitopes trigger immunity for antibodies production. Boosting the immune system by improving thymus function can be a therapeutic strategy for preventing virus-related diseases. This review aims to summarize the endocrine-immunoregulatory functions of the thymus and the underlying mechanisms in the prevention of COVID-19.
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Affiliation(s)
- Ebtesam A. Al-Suhaimi
- Biology Department, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia; (M.A.A.); (F.M.A.); (A.M.H.)
- Correspondence: ; Tel.: +966-133-332-444
| | - Meneerah A. Aljafary
- Biology Department, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia; (M.A.A.); (F.M.A.); (A.M.H.)
| | - Fadwa M. Alkhulaifi
- Biology Department, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia; (M.A.A.); (F.M.A.); (A.M.H.)
| | - Hanan A. Aldossary
- Epidemic Diseases Research Department, Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia; or
| | - Thamer Alshammari
- Genetic Research Department, Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia; (T.A.); (A.A.-Q.); (Z.A.)
| | - Ayman AL-Qaaneh
- Genetic Research Department, Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia; (T.A.); (A.A.-Q.); (Z.A.)
- Clinical Pharmacy Services Division, Pharmacy Services Department, Johns Hopkins Aramco Healthcare (JHAH), Dhahran 31311, Saudi Arabia
| | - Razan Aldahhan
- Stem Cell Research Department, Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia;
| | - Zahra Alkhalifah
- Genetic Research Department, Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia; (T.A.); (A.A.-Q.); (Z.A.)
| | - Zagit Z. Gaymalov
- Earlystage OÜ, Lasnamäe Linnaosa, Sepapaja tn 6, Harju Maakond, 15551 Tallinn, Estonia;
| | - Adeeb Shehzad
- Clinical Pharmacy Research Department, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia;
| | - Abdelgadir M. Homeida
- Biology Department, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia; (M.A.A.); (F.M.A.); (A.M.H.)
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7
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Maerz JK, Trostel C, Lange A, Parusel R, Michaelis L, Schäfer A, Yao H, Löw HC, Frick JS. Bacterial Immunogenicity Is Critical for the Induction of Regulatory B Cells in Suppressing Inflammatory Immune Responses. Front Immunol 2020; 10:3093. [PMID: 32038631 PMCID: PMC6993086 DOI: 10.3389/fimmu.2019.03093] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 12/18/2019] [Indexed: 01/18/2023] Open
Abstract
B cells fulfill multifaceted functions that influence immune responses during health and disease. In autoimmune diseases, such as inflammatory bowel disease, multiple sclerosis and rheumatoid arthritis, depletion of functional B cells results in an aggravation of disease in humans and respective mouse models. This could be due to a lack of a pivotal B cell subpopulation: regulatory B cells (Bregs). Although Bregs represent only a small proportion of all immune cells, they exhibit critical properties in regulating immune responses, thus contributing to the maintenance of immune homeostasis in healthy individuals. In this study, we report that the induction of Bregs is differentially triggered by the immunogenicity of the host microbiota. In comparative experiments with low immunogenic Bacteroides vulgatus and strong immunogenic Escherichia coli, we found that the induction and longevity of Bregs depend on strong Toll-like receptor activation mediated by antigens of strong immunogenic commensals. The potent B cell stimulation via E. coli led to a pronounced expression of suppressive molecules on the B cell surface and an increased production of anti-inflammatory cytokines like interleukin-10. These bacteria-primed Bregs were capable of efficiently inhibiting the maturation and function of dendritic cells (DCs), preventing the proliferation and polarization of T helper (Th)1 and Th17 cells while simultaneously promoting Th2 cell differentiation in vitro. In addition, Bregs facilitated the development of regulatory T cells (Tregs) resulting in a possible feedback cooperation to establish immune homeostasis. Moreover, the colonization of germfree wild type mice with E. coli but not B. vulgatus significantly reduced intestinal inflammatory processes in dextran sulfate sodium (DSS)-induced colitis associated with an increase induction of immune suppressive Bregs. The quantity of Bregs directly correlated with the severity of inflammation. These findings may provide new insights and therapeutic approaches for B cell-controlled treatments of microbiota-driven autoimmune disease.
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Affiliation(s)
- Jan Kevin Maerz
- Department for Medical Microbiology and Hygiene, Interfacultary Institute for Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
| | - Constanze Trostel
- Department for Medical Microbiology and Hygiene, Interfacultary Institute for Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
| | - Anna Lange
- Department for Medical Microbiology and Hygiene, Interfacultary Institute for Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
| | - Raphael Parusel
- Department for Medical Microbiology and Hygiene, Interfacultary Institute for Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
| | - Lena Michaelis
- Department for Medical Microbiology and Hygiene, Interfacultary Institute for Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
| | - Andrea Schäfer
- Department for Medical Microbiology and Hygiene, Interfacultary Institute for Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
| | - Hans Yao
- Department for Medical Microbiology and Hygiene, Interfacultary Institute for Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
| | - Hanna-Christine Löw
- Department for Medical Microbiology and Hygiene, Interfacultary Institute for Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
| | - Julia-Stefanie Frick
- Department for Medical Microbiology and Hygiene, Interfacultary Institute for Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
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Hua F, Chen Y, Yang Z, Teng X, Huang H, Shen Z. Protective action of bone marrow mesenchymal stem cells in immune tolerance of allogeneic heart transplantation by regulating CD45RB + dendritic cells. Clin Transplant 2018; 32:e13231. [PMID: 29488658 DOI: 10.1111/ctr.13231] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND Bone marrow-derived mesenchymal stem cells (BMSCs) could exert a potent immunosuppressive effect and therefore may have a therapeutic potential in T-cell-dependent pathologies. We aimed to examine the effects of BMSCs on immune tolerance of allogeneic heart transplantation and the involvement of CD45RB+ dendritic cells (DCs). METHODS Bone marrow-derived DCs and BMSCs were co-cultured, with CD45RB expression on the surface of DCs measured by flow cytometry. qRT-PCR and Western blotting were used to detect mRNA and protein levels. Cytometric bead array was performed to determine the serum level of IL-10. Survival time of transplanted heart and expression of CD4+ , CD8+ , IL-2, IL-4, IL-10, IFN-γ were determined. Immunofluorescence assay was employed to determine intensity of C3d and C4d. RESULTS DCs co-cultured with BMSCs showed increased CD45RB and Foxp3 levels. CD45RB+ DCs co-cultured with T-cells CD4+ displayed increased T-cell CD4+ Foxp3 ratio and IL-10 than DCs. Both of them extended survival time of transplanted heart, decreased histopathological classification and score, intensity of C3d, C4d, proportion of CD4+ , expression levels of IL-2 and IFN-γ, and increased the CD4+ Foxp3 ratio and levels of IL-4 and IL-10. CD45RB+ DCs achieved better protective effects than DCs. CONCLUSION BMSCs increased the expression of CD45RB in the bone marrow-derived DCs, thereby strengthening immunosuppression capacity of T cells and immune tolerance of allogeneic heart transplantation.
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Affiliation(s)
- Fei Hua
- Department of Cardiac Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Yueqiu Chen
- Department of Cardiac Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Ziying Yang
- Department of Cardiac Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Xiaomei Teng
- Department of Cardiac Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Haoyue Huang
- Department of Cardiac Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
| | - Zhenya Shen
- Department of Cardiac Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Soochow University, Suzhou, China
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9
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Immunomodulatory Effects of Taiwanese Neolitsea Species on Th1 and Th2 Functionality. J Immunol Res 2017; 2017:3529859. [PMID: 28781969 PMCID: PMC5525079 DOI: 10.1155/2017/3529859] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 05/08/2017] [Accepted: 05/24/2017] [Indexed: 02/06/2023] Open
Abstract
Neolitsea species, medicinal plants belonging to Lauraceae, contain rich alkaloids, steroids, sesquiterpenoids, and triterpenoids which possess antimicrobial, antioxidant, and anti-inflammatory bioactivities. However, species differences in the immunomodulatory effects and evidence pertaining to the effects of Neolitsea species on adaptive immunity are scarce. This study aimed to evaluate the immunomodulatory properties of ten Taiwanese Neolitsea plants on T helper (Th) cell functionality, especially Th1 and Th2. Most of the 29 crude extracts of Neolitsea were not toxic to splenocytes, except N. buisanensis roots. N. aciculata and N. villosa leaf extracts possessed differential immunomodulatory effects on Th1/Th2 balance. N. aciculata var. variabillima and N. hiiranensis leaf extracts attenuated both Th1 and Th2 cytokines while N. konishii dramatically suppressed IFN-γ production. As N. aciculata var. variabillima and N. konishii leaf extracts significantly attenuated Th1 functionality, we further evaluated their effects on CD4 cells under CD3/CD28 stimulation. N. aciculata var. variabillima significantly suppressed IFN-γ, IL-10, and IL-17, demonstrating the broad suppressive effects on T helper cells; N. konishii significantly suppressed IFN-γ and IL-10 production, while the production of IL-17 was not altered. Collectively, these data demonstrated that leaf extracts of Taiwanese Neolitsea species contain phytochemicals with potentials to be developed as selective immunomodulators.
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10
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Garg AD, Vara Perez M, Schaaf M, Agostinis P, Zitvogel L, Kroemer G, Galluzzi L. Trial watch: Dendritic cell-based anticancer immunotherapy. Oncoimmunology 2017; 6:e1328341. [PMID: 28811970 DOI: 10.1080/2162402x.2017.1328341] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 05/05/2017] [Indexed: 12/11/2022] Open
Abstract
Dendritic cell (DC)-based vaccines against cancer have been extensively developed over the past two decades. Typically DC-based cancer immunotherapy entails loading patient-derived DCs with an appropriate source of tumor-associated antigens (TAAs) and efficient DC stimulation through a so-called "maturation cocktail" (typically a combination of pro-inflammatory cytokines and Toll-like receptor agonists), followed by DC reintroduction into patients. DC vaccines have been documented to (re)activate tumor-specific T cells in both preclinical and clinical settings. There is considerable clinical interest in combining DC-based anticancer vaccines with T cell-targeting immunotherapies. This reflects the established capacity of DC-based vaccines to generate a pool of TAA-specific effector T cells and facilitate their infiltration into the tumor bed. In this Trial Watch, we survey the latest trends in the preclinical and clinical development of DC-based anticancer therapeutics. We also highlight how the emergence of immune checkpoint blockers and adoptive T-cell transfer-based approaches has modified the clinical niche for DC-based vaccines within the wide cancer immunotherapy landscape.
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Affiliation(s)
- Abhishek D Garg
- Cell Death Research & Therapy (CDRT) Lab, Department of Cellular & Molecular Medicine, KU Leuven University of Leuven, Leuven, Belgium
| | - Monica Vara Perez
- Cell Death Research & Therapy (CDRT) Lab, Department of Cellular & Molecular Medicine, KU Leuven University of Leuven, Leuven, Belgium
| | - Marco Schaaf
- Cell Death Research & Therapy (CDRT) Lab, Department of Cellular & Molecular Medicine, KU Leuven University of Leuven, Leuven, Belgium
| | - Patrizia Agostinis
- Cell Death Research & Therapy (CDRT) Lab, Department of Cellular & Molecular Medicine, KU Leuven University of Leuven, Leuven, Belgium
| | - Laurence Zitvogel
- Gustave Roussy Comprehensive Cancer Institute, Villejuif, France.,INSERM, U1015, Villejuif, France.,Center of Clinical Investigations in Biotherapies of Cancer (CICBT) 1428, Villejuif, France.,Université Paris Sud/Paris XI, Le Kremlin-Bicêtre, France
| | - Guido Kroemer
- Université Paris Descartes/Paris V, Paris, France.,Université Pierre et Marie Curie/Paris VI, Paris, France.,Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, Paris, France.,INSERM, U1138, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France.,Karolinska Institute, Department of Women's and Children's Health, Karolinska University Hospital, Stockholm, Sweden.,Pôle de Biologie, Hopitâl Européen George Pompidou, AP-HP, Paris, France
| | - Lorenzo Galluzzi
- Université Paris Descartes/Paris V, Paris, France.,Department of Radiation Oncology, Weill Cornell Medical College, New York, NY, USA.,Sandra and Edward Meyer Cancer Center, New York, NY, USA
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11
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Dempke WCM, Fenchel K, Uciechowski P, Dale SP. Second- and third-generation drugs for immuno-oncology treatment-The more the better? Eur J Cancer 2017; 74:55-72. [PMID: 28335888 DOI: 10.1016/j.ejca.2017.01.001] [Citation(s) in RCA: 167] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 12/20/2016] [Accepted: 01/02/2017] [Indexed: 01/20/2023]
Abstract
Recent success in cancer immunotherapy (anti-CTLA-4, anti-PD1/PD-L1) has confirmed the hypothesis that the immune system can control many cancers across various histologies, in some cases producing durable responses in a way not seen with many small-molecule drugs. However, only less than 25% of all patients do respond to immuno-oncology drugs and several resistance mechanisms have been identified (e.g. T-cell exhaustion, overexpression of caspase-8 and β-catenin, PD-1/PD-L1 gene amplification, MHC-I/II mutations). To improve response rates and to overcome resistance, novel second- and third-generation immuno-oncology drugs are currently evaluated in ongoing phase I/II trials (either alone or in combination) including novel inhibitory compounds (e.g. TIM-3, VISTA, LAG-3, IDO, KIR) and newly developed co-stimulatory antibodies (e.g. CD40, GITR, OX40, CD137, ICOS). It is important to note that co-stimulatory agents strikingly differ in their proposed mechanism of action compared with monoclonal antibodies that accomplish immune activation by blocking negative checkpoint molecules such as CTLA-4 or PD-1/PD-1 or others. Indeed, the prospect of combining agonistic with antagonistic agents is enticing and represents a real immunologic opportunity to 'step on the gas' while 'cutting the brakes', although this strategy as a novel cancer therapy has not been universally endorsed so far. Concerns include the prospect of triggering cytokine-release syndromes, autoimmune reactions and hyper immune stimulation leading to activation-induced cell death or tolerance, however, toxicity has not been a major issue in the clinical trials reported so far. Although initial phase I/II clinical trials of agonistic and novel antagonistic drugs have shown highly promising results in the absence of disabling toxicity, both in single-agent studies and in combination with chemotherapy or other immune system targeting drugs; however, numerous questions remain about dose, schedule, route of administration and formulation as well as identifying the appropriate patient populations. In our view, with such a wealth of potential mechanisms of action and with the ability to fine-tune monoclonal antibody structure and function to suit particular requirements, the second and third wave of immuno-oncology drugs are likely to provide rapid advances with new combinations of novel immunotherapy (especially co-stimulatory antibodies). Here, we will review the mechanisms of action and the clinical data of these new antibodies and discuss the major issues facing this rapidly evolving field.
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Affiliation(s)
- Wolfram C M Dempke
- Kyowa Kirin Pharmaceutical Development, Galashiels, United Kingdom; University of Munich, University Hospital of Grosshadern, Department of Haematology and Oncology, Germany.
| | | | - Peter Uciechowski
- RWTH Aachen University, Medical Faculty, Institute of Immunology, Germany
| | - Stephen P Dale
- Kyowa Kirin Pharmaceutical Development, Galashiels, United Kingdom
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12
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Singh BN, Saha C, Galun D, Upreti DK, Bayry J, Kaveri SV. European Viscum album: a potent phytotherapeutic agent with multifarious phytochemicals, pharmacological properties and clinical evidence. RSC Adv 2016. [DOI: 10.1039/c5ra27381a] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Viscum albumL. or European mistletoe (Loranthaceae), a semi-parasitic shrub, has been used as a traditional medicine in Europe for centuries to treat various diseases like cancer, cardiovascular disorder, epilepsy, infertility, hypertension and arthritis.
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Affiliation(s)
- Brahma N. Singh
- Pharmacognosy & Ethnopharmacology Division
- CSIR-National Botanical Research Institute
- Lucknow-226 001
- India
| | - Chaitrali Saha
- Institut National de la Santé et de la Recherche Médicale Unité 1138
- Paris
- France
- Centre de Recherche des Cordeliers
- Equipe – Immunopathologie et immuno-intervention thérapeutique
| | - Danijel Galun
- Clinic for Digestive Surgery
- Clinical Centre of Serbia
- Belgrade
- Serbia
- Medical School
| | - Dalip K. Upreti
- Lichenology Division
- CSIR-National Botanical Research Institute
- Lucknow-226 001
- India
| | - Jagadeesh Bayry
- Institut National de la Santé et de la Recherche Médicale Unité 1138
- Paris
- France
- Centre de Recherche des Cordeliers
- Equipe – Immunopathologie et immuno-intervention thérapeutique
| | - Srini V. Kaveri
- Institut National de la Santé et de la Recherche Médicale Unité 1138
- Paris
- France
- Centre de Recherche des Cordeliers
- Equipe – Immunopathologie et immuno-intervention thérapeutique
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