Abstract
Oligodendrocyte progenitor cells (OPCs) are appropriate model cells for studying the progress of neurodegenerative disorders and evaluation of pharmacological efficacies of small molecules for treatment of these disorders. Here, we focused on the therapeutic role of Pioglitazone, which is a selective agonist of peroxisome proliferator-activated receptor gamma (PPARγ), a respective nuclear receptor in inflammatory responses. Human embryonic stem cell-derived OPCs were pretreated by Pioglitazone at differing concentrations. Pretreated OPCs were further examined after induction of inflammation by LPS. Interestingly, Pioglitazone reversed the inflammatory conditions and enhanced OPC viability. Data showed that Pioglitazone reduced Nitric Oxide (NO) production. Moreover, Pioglitazone enhanced cell viability through distinct mechanisms including reduction of apoptosis and regulation of cell cycle markers. This study demonstrated that NO induces apoptosis through FOXO1 and degradation of β-catenin, while the presence of Pioglitazone inhibited these effects in rescuing human OPCs from apoptosis. Also, Pioglitazone did not show a significant influence on mRNA levels of TLR2, TRL4, and TNFα. Furthermore, simultaneous treatment of Pioglitazone with CHIR, a GSKβ inhibitor, facilitated anti-apoptotic responses of OPCs. Taken together, therapy with Pioglitazone represents a novel potential drug in alleviating the loss of OPCs in neurodegenerative conditions.
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Abbreviations
- 15d-PGJ2:
-
Cyclopentenone prostaglandin 15-deoxy 12,14 prostaglandin J2
- bFGF:
-
Basic fibroblast growth factor
- EGF:
-
Epidermal growth factor
- FITC:
-
Fluorescein isothiocyanate
- GRM:
-
Glial restriction medium
- GSK-3:
-
Glycogen synthase kinase-3
- hESCs:
-
Human embryonic stem cells
- HRP:
-
Horseradish peroxidase
- IRF1:
-
Interferon regulatory factor-1
- LPS:
-
Lipopolysaccharide
- MAPK:
-
Mitogen-activated protein kinases
- MS:
-
Multiple sclerosis
- MTS/PMS:
-
[3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)- 2-(4-sulfophenyl)-2H-tetrazolium)/phenazine methosulfate]
- NOS:
-
NO synthase
- NSCs:
-
Neural stem cells
- OPCs:
-
Oligodendrocyte progenitor cells
- PBMCs:
-
Peripheral blood mononuclear cells
- PDGF:
-
Platelet-derived growth factor
- PHA:
-
Phyto-hemagglutinin
- PI:
-
Propidium iodide
- PPARγ:
-
Peroxisome proliferator-activated receptor γ
- PVDF:
-
Polyvinylidene difluoride
- qPCR:
-
Quantitative real-time PCR
- RA:
-
Retinoic acid
- STAT1:
-
Signal transducer and activator of transcription 1
- TLR:
-
Toll-like receptor
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Acknowledgements
We thank our colleagues and Royan staff members for their association and helpful discussion in this project. This study was supported Royan Institute. None of the authors have any conflicts of interest to disclose and all authors support submission to this journal.
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MP contributed to the conception and design of the work, acquisition of data, analysis and interpretation of data, and drafted sections of the manuscript. M-SH contributed to the acquisition and analysis of data. AG contributed to the acquisition of data and drafted sections of the manuscript. AK-E contributed to the acquisition of data and drafted sections of the manuscript. KG contributed to the design of work, analysis and interpretation of data, and finalized the manuscript. MHN-E contributed to the design of work, analysis and interpretation of data, and finalized the manuscript. HB contributed to the design of work, analysis and interpretation of data, and finalized the manuscript.
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Peymani, M., Ghaedi, K., Hashemi, MS. et al. Ameliorating the Effect of Pioglitazone on LPS-Induced Inflammation of Human Oligodendrocyte Progenitor Cells. Cell Mol Neurobiol 38, 517–527 (2018). https://doi.org/10.1007/s10571-017-0500-6
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DOI: https://doi.org/10.1007/s10571-017-0500-6