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Oxaloacetate as new inducer for osteogenic differentiation of human adipose tissue-derived mesenchymal stem cells in vitro.
Molecular Biology Reports 2024 March 28
BACKGROUND: Mitochondrial organelles play a crucial role in cellular metabolism so different cell types exhibit diverse metabolic and energy demands. Therefore, alternations in the intracellular distribution, quantity, function, and structure of mitochondria are required for stem cell differentiation. Finding an effective inducer capable of modulating mitochondrial activity is critical for the differentiation of specific stem cells into osteo-like cells for addressing issues related to osteogenic disorders. This study aimed to investigate the effect of oxaloacetate (OAA) on the osteogenic differentiation of human adipose-derived mesenchymal stem cells (hADSCs) in vitro.
METHODS AND RESULTS: First, the most favorable OAA concentration was measured through MTT assay and subsequently confirmed using acridine orange staining. Human ADSCs were cultured in osteogenic medium supplemented with OAA and analyzed on days 7 and 14 of differentiation. Various assays including alkaline phosphatase assay (ALP), cellular calcium content assay, mineralized matrix staining with alizarin red, catalase (CAT) and superoxide dismutase (SOD) activity, and real-time RT-PCR analysis of three bone-specific markers (ALP, osteocalcin, and collagen type I) were conducted to characterize the differentiated cells. Following viability assessment, OAA at a concentration of 1 µM was considered the optimal dosage for further studies. The results of osteogenic differentiation assays showed that OAA at a concentration of 1 × 10- 6 M significantly increased ALP enzyme activity, mineralization, CAT and SOD activity and the expression of bone-specific genes in differentiated cells compared to control groups in vitro.
CONCLUSIONS: In conclusion, the fundings from this study suggest that OAA possesses favorable properties that make it a potential candidate for application in medical bone regeneration.
METHODS AND RESULTS: First, the most favorable OAA concentration was measured through MTT assay and subsequently confirmed using acridine orange staining. Human ADSCs were cultured in osteogenic medium supplemented with OAA and analyzed on days 7 and 14 of differentiation. Various assays including alkaline phosphatase assay (ALP), cellular calcium content assay, mineralized matrix staining with alizarin red, catalase (CAT) and superoxide dismutase (SOD) activity, and real-time RT-PCR analysis of three bone-specific markers (ALP, osteocalcin, and collagen type I) were conducted to characterize the differentiated cells. Following viability assessment, OAA at a concentration of 1 µM was considered the optimal dosage for further studies. The results of osteogenic differentiation assays showed that OAA at a concentration of 1 × 10- 6 M significantly increased ALP enzyme activity, mineralization, CAT and SOD activity and the expression of bone-specific genes in differentiated cells compared to control groups in vitro.
CONCLUSIONS: In conclusion, the fundings from this study suggest that OAA possesses favorable properties that make it a potential candidate for application in medical bone regeneration.
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