Decrease of spleen invariant natural killer T and natural killer cell numbers in Burkholderia thailandensis-infected C57BL/6 mice
| Autor: | Surasakdi Wongratanacheewin, Thitinan Kasetthat, Hiroshi Watarai, Yue Ren, Rasana W. Sermswan |
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| Rok vydání: | 2019 |
| Předmět: |
Adoptive cell transfer
Burkholderia medicine.medical_treatment T-Lymphocytes Immunology Spleen Biology Lymphocyte Activation Natural killer cell Mice medicine Immunology and Allergy Macrophage Animals Humans Interferon gamma Mice Knockout Burkholderia thailandensis Innate lymphoid cell General Medicine biology.organism_classification Immunity Innate Killer Cells Natural Mice Inbred C57BL Cytokine medicine.anatomical_structure Cytokines Natural Killer T-Cells medicine.drug |
| Zdroj: | Asian Pacific journal of allergy and immunology. 40(2) |
| ISSN: | 0125-877X |
| Popis: | BACKGROUND Burkholderia thailandensis is a non-pathogenic bacterium that is closely related to B. pseudomallei. Invariant natural killer T (iNKT) cells are innate lymphoid cells that play a role in bacterial infections; however the iNKT cells in B. thailandensis infections are still uncharacterized. OBJECTIVE To study the cytokine production in α-galactosylceramide (α-GalCer)-stimulated lymphocytes from mouse organs. The numbers of spleen iNKT cells, natural killer (NK) cells, dendritic cells and macrophages in B. thailandensis- infected C57BL/6 (B6) mice were investigated. METHODS Lymphocytes, obtained from mouse lungs, liver, and spleen, were cultured for 48 hours with α-GalCer, and their cytokine levels were determined. iNKT, dendritic, macrophage and NK cells in the spleen of B. thailandensis-infected B6 mice or iNKT knock out (KO) mice, stimulated with either phosphate-buffered saline (PBS) or α-GalCer, were analyzed by flow cytometry. This was also done in adoptive cell transfer experiments. RESULTS Interferon gamma (IFN-γ) was predominantly produced in α-GalCer-stimulated mouse spleen and liver lymphocytes, while interleukin (IL)-13 was the main cytokine found in the lungs. B. thailandensis-infected mice had a significantly lower number of splenic iNKT, NK and dendritic cells, but not macrophages, compared to the control. Interestingly, the number of NK cells was significantly decreased in iNKT wild type and iNKT KO mice after B. thailandensis infection. The number of NK cells recovered by activation with α-GalCer or after adoptive transfer of iNKT cells into KO mice. The iNKT cell-mediated reduction of dendritic and NK cells might be related to infection by B. thailandensis. CONCLUSIONS B. thailandensis decreased the number of iNKT and NK cells in the spleen of infected mice. |
| Databáze: | OpenAIRE |
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