L-Glutamine in vitro Modulates some Immunomodulatory Properties of Bone Marrow Mesenchymal Stem Cells
| Autor: | Guilherme Galvão dos Santos, Primavera Borelli, Ricardo Ambrósio Fock, Talita Sartori, Araceli Aparecida Hastreiter |
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| Rok vydání: | 2017 |
| Předmět: |
Male
STAT3 Transcription Factor 0301 basic medicine endocrine system Cancer Research Glutamine Lymphocyte Bone Marrow Cells Biology ADJUVANTES IMUNOLÓGICOS Immunomodulation Mice 03 medical and health sciences Immune system medicine Animals Mice Inbred BALB C Cell growth Mesenchymal stem cell NF-kappa B Mesenchymal Stem Cells Cell Biology In vitro Cell biology 030104 developmental biology medicine.anatomical_structure Immunology Cytokines Stem cell Macrophage proliferation |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1558-6804 1550-8943 |
| Popis: | Glutamine (GLUT) is a nonessential amino acid that can become conditionally essential under stress conditions, being able to act in the modulation of the immune responses. Mesenchymal stem cells (MSCs) are known to their capability in the modulation of immune responses through cell-cell contact and by the secretion of soluble factors. Considering that GLUT is an immunonutrient and little is known about the influence of GLUT on the capability of MSCs to modulate immune cells, this work aims to investigate how variations in GLUT concentrations in vitro could affect some immunomodulatory properties of MSCs. In order to evaluate the effects of GLUT on MSCs immunomodulatory properties, cell proliferation rates, the expression of NFκB and STAT-3, and the production of IL-1β, IL-6, IL-10, TGF-β and TNF-α by MSCs were assessed. Based on our findings, GLUT at high doses (10 mM) augmented the proliferation of MSCs and modulated immune responses by decreasing levels of pro-inflammatory cytokines, such as IL-1β and IL-6, and by increasing levels of anti-inflammatory cytokines IL-10 and TGF-β. In addition, MSCs cultured in higher GLUT concentrations (10 mM) expressed lower levels of NF-κB and higher levels of STAT-3. Furthermore, conditioned media from MSCs cultured at higher GLUT concentrations (10 mM) reduced lymphocyte and macrophage proliferation, increased IL-10 production by both cells types, and decreased IFN-γ production by lymphocytes. Overall, this study showed that 10 mM of GLUT is able to modify immunomodulatory properties of MSCs. |
| Databáze: | OpenAIRE |
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