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The regenerative potential of Tideglusib and CHIR99021 small molecules as potent odontogenic differentiation enhancers of human dental pulp stem cells

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Abstract

Objectives

To assess the effect of Tideglusib and CHIR99021 small molecules on the odontogenic differentiation potential of human dental pulp stem cells (hDPSCs) via Wnt/β-catenin pathway activation.

Methodology

hDPSCs were isolated from impacted third molars indicated for extraction and were characterized by flow cytometry. hDPSCs were then induced to differentiate into odontogenic lineage in the presence of Tideglusib and CHIR99021. Odontogenic differentiation was evaluated using Alizarin Red stain and RT-PCR for expression of odontogenic specific differentiation markers: DSPP, DMP1, ALP, OPN, and RUNX2 in relation to undifferentiated cells. RT-PCR was also conducted to assess the expression of Wnt/β-catenin pathway activation marker (AXIN2). One-way ANOVA Kruskal-Wallis test was used for statistical analysis.

Results

Wnt/β-catenin pathway was successfully activated by Tideglusib and CHIR99021 in hDPSCs where AXIN2 was significantly upregulated. Successful odontogenic differentiation was confirmed by Alizarin Red staining of calcified nodules. RT-PCR for odontogenic differentiation markers DSPP, DMP1, and RUNX expression by hDPSCs induced by CHIR99021 was higher than that expressed by hDPSCs induced by Tideglusib, whereas expression of OPN and ALP was higher in Tideglusib-induced cells than in CHIR99021-induced cells.

Conclusions

Both small molecules successfully induced odontogenic differentiation of hDPSCs through Wnt/β-catenin pathway activation.

Clinical relevance

These findings suggest that Tideglusib and CHIR99021 can be applied clinically in pulp regeneration to improve strategies for vital pulp regeneration and to promote dentine repair.

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Data Availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

We acknowledge the help of Dr Adham Abdel Azim in revising the manuscript and providing valuable advice.

Funding

Study was self-funded.

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Authors and Affiliations

Authors

Contributions

SH: contributed to the conception of the design, data acquisition, analysis, drafted the manuscript, critically revised the manuscript and giving final approval. RA: contributed to the conception of the design, data acquisition, analysis, or interpretation; critically revised the manuscript; gave final approval. GN: responsible for the molecular studies, critically revised the manuscript, and gave final approval. RP: Contributed to conception or design, analysis, or interpretation; critically revised the manuscript; gave final approval.

Corresponding author

Correspondence to Riham Aly.

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Ethics approval and consent to participate

The authors are accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved. All methods were performed in accordance with the guidelines and regulations of the Declaration of Helsinki. Informed consent has been obtained from all participants. The experimental protocol was reviewed by the Ethical Committee of the Medical Research of the National Research Centre, Egypt and granted approval under the number 5435062021.

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The authors declare no competing interests.

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Hanna, S., Eldeen, G.N., Alfayate, R.P. et al. The regenerative potential of Tideglusib and CHIR99021 small molecules as potent odontogenic differentiation enhancers of human dental pulp stem cells. Clin Oral Invest 28, 48 (2024). https://doi.org/10.1007/s00784-023-05452-x

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