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Expansion of T regulatory lymphocytes by murine bone marrow dendritic cells previously stimulated with Anisakis simplex larval antigens
Zamora, Vega; Rodero, Marta; Ibáñez-Escribano, Alexandra; Andreu-Ballester, Juan C; Division of Microbiology and Infectious Diseases, Respiratory Disease BranchMendez, Susana; Cuéllar, Carmen.
  • Zamora, Vega; Universidad Complutense. Facultad de Farmacia. Departamento de Microbiología y Parasitología. Madrid. ES
  • Rodero, Marta; Universidad Complutense. Facultad de Farmacia. Departamento de Microbiología y Parasitología. Madrid. ES
  • Ibáñez-Escribano, Alexandra; Universidad Complutense. Facultad de Farmacia. Departamento de Microbiología y Parasitología. Madrid. ES
  • Andreu-Ballester, Juan C; Hospital Arnau de Vilanova. Departamento de Investigación. Valencia. ES
  • Division of Microbiology and Infectious Diseases, Respiratory Disease BranchMendez, Susana; National Institutes of Health. National Institute of Allergy and Infectious Diseases. Division of Microbiology and Infectious Diseases, Respiratory Disease BranchMendez, Susana. Rockville. US
  • Cuéllar, Carmen; Universidad Complutense. Facultad de Farmacia. Departamento de Microbiología y Parasitología. Madrid. ES
Mem. Inst. Oswaldo Cruz ; 116: e200560, 2021. graf
Article in English | LILACS | ID: biblio-1154882
Responsible library: BR1.1
ABSTRACT
BACKGROUND Anisakis simplex antigens present immunomodulatory properties by the induction of tolerogenic dendritic cells (DCs) in mice. OBJECTIVES To study the capacity of DCs stimulated with A. simplex excretory-secretory (ES) or crude extract (CE) to generate Tregs. To investigate in vitro effects of antigens on the metabolic activity of splenocytes induced by LPS or CpG. METHODS Phenotypic and functional characterization of T cells co-cultured with A. simplex-pulsed DCs was performed by flow cytometry. Lymphocyte mitochondrial respiratory activity was estimated by the Alamar Blue® Assay. FINDINGS In C57BL/6J, CD4+CD25-Foxp3+ and CD8+CD25-Foxp3+ populations increased by CE-stimulated-DCs. In BALB/c, CE-stimulated-DCs caused the expansion of CD4+CD25+Foxp3+IL-10+ and CD8+CD25+Foxp3+IL-10+. IFN-γ expression raised in BALB/c CD4+CD25+ and CD4+CD25- for CE and ES, respectively. ES-stimulated-DCs increased CD4+CD25+ Foxp3+ and CD8+CD25- Foxp3+ expression in T cells. The association of ES or CE with LPS produced the increase in splenocyte activity in C57BL/6J. The association of CE with CpG decreased the proliferation caused by CpG in C57BL/6J. MAIN CONCLUSIONS A. simplex increase the frequency of Tregs, which in turn produce IL-10 and IFN-γ. The host genetic base is essential in the development of anti-Anisakis immune responses (Th2, Th1, Treg).
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Full text: Available Index: LILACS (Americas) Main subject: Anisakis / T-Lymphocytes, Regulatory / Antigens Limits: Animals Language: English Journal: Mem. Inst. Oswaldo Cruz Journal subject: Tropical Medicine / Parasitology Year: 2021 Type: Article Affiliation country: Spain / United States Institution/Affiliation country: Hospital Arnau de Vilanova/ES / National Institutes of Health/US / Universidad Complutense/ES

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Full text: Available Index: LILACS (Americas) Main subject: Anisakis / T-Lymphocytes, Regulatory / Antigens Limits: Animals Language: English Journal: Mem. Inst. Oswaldo Cruz Journal subject: Tropical Medicine / Parasitology Year: 2021 Type: Article Affiliation country: Spain / United States Institution/Affiliation country: Hospital Arnau de Vilanova/ES / National Institutes of Health/US / Universidad Complutense/ES