ArticleAmerican journal of stem cells2024
Examining the level of inflammatory cytokines TNF-α and IL-8 produced by osteoblasts differentiated from dental pulp stem cells.
Article in American journal of stem cells, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe use of dental pulp stem cells (DPSCs) in clinical applications instead of bone marrow stem cells is a very promising method capable of significantly changing the future of medical treatment. If further studies prove that DPSCs and the cells differentiated from them do not stimulate the immune system, these cells can be used more reliably in treatment of autoimmune diseases.
methodsIn this research, we examined the isolated DPSCs and differentiated osteoblasts from them in medium without inflammatory stimulants in terms of TLR3 and TLR4 gene expression and inflammatory cytokines, including TNF-α and IL-8 using qRT-PCR, and measured the concentration of inflammatory cytokines IL-8 and TNF-α produced by these two types of cells through ELISA.
resultsThe obtained results showed that the expression level of inflammatory cytokines IL-8 and TNF-α in differentiated osteoblasts is significantly different as compared with DPSCs. However, no significant difference was observed in TLR-4 expression between two groups. An increase in TNF-α expression level was found to directly correlate with an increase in the expression of IL-8. The concentration of cytokine TNF-α in osteoblasts was significantly higher than that of IL-8 in DPSCs.
conclusionIn comparison to DPSCs, osteoblast cells first lead to inflammatory responses. These responses reduce overtime. However, DPSCs retain their immunomodulatory properties and do not show inflammatory responses.
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