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Pichia fermentans originates apoptosis in human oral squamous cell carcinoma by over-expressing BAX and CASP 9 genes

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Abstract

Squamous cell carcinoma (SCC) is one of the most common malignant tumors of the oral cavity. Probiotics have often been considered as effective anti-tumoral candidates. This study aimed to investigate the role of Pichia fermentans YSH secretion metabolites on the induction of apoptosis in SCC. Cytotoxicity, apoptotic effects, and visualization DNA damage were evaluated by MTT, flow cytometry, and DAPI staining assays, respectively. Real-time PCR was employed for evaluation of the mechanism of cellular apoptosis. P. fermentans YSH secretions (IC50) showed cellular cytotoxicity in human tongue squamous carcinoma (HSC4, RRID:CVCL_1289) cells (85% apoptosis) similar to the cytotoxicity of cisplatin whereas only 21% apoptosis was observed in human epithelial normal (KDR, RRID:CVCL_9V14) cells. The prophylactic efficacy of reference yeast, which regarded as a reference, was not comparable to P. fermentans YSH illustrating strain-dependent properties of bioactivities on oral disease control and prevention. According to our result, the main cytotoxicity is related to apoptosis mechanisms induced by apoptosis genes inducing BAX and CASP. However, follow-up researches should be performed to recognize the compounds to be utilized as effective anticancer therapeutics.

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Acknowledgements

The facilities support of the Tabriz University of Medical Sciences is gratefully acknowledged.

Funding

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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HBS performed the experiment; ZA participated in the protocol design and provided help; AS and HBS prepared the manuscript; AYKH participated in the discussion, protocol design, edit and revised the manuscript. All authors read and approved the final manuscript for submission.

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Correspondence to Ahmad Yari Khosroushahi.

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Shamloo, H.B., Shahabi, A., Aghazadeh, Z. et al. Pichia fermentans originates apoptosis in human oral squamous cell carcinoma by over-expressing BAX and CASP 9 genes. Cytotechnology 72, 445–454 (2020). https://doi.org/10.1007/s10616-020-00392-w

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  • DOI: https://doi.org/10.1007/s10616-020-00392-w

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