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Open AccessArticle

Effects of Epigallocatechin Gallate (EGCG) on Urinary Bladder Urothelial Carcinoma―Next-Generation Sequencing and Bioinformatics Approaches

by Hsiang-Ying Lee 1,2,3,4,†, Yi-Jen Chen 1,4,5,†, Wei-An Chang 1,4,6, Wei-Ming Li 3,4,7, Hung-Lung Ke 3,4,7, Wen-Jeng Wu 2,3,4,7 and Po-Lin Kuo 1,8,*
1
Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
2
Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 801, Taiwan
3
Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
4
School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
5
Department of Physical Medicine and Rehabilitation, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
6
Division of Pulmonary and Critical Care Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
7
Department of Urology, Ministry of Health and Welfare Pingtung Hospital, Pingtung 900, Taiwan
8
Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan
*
Author to whom correspondence should be addressed.
Hsiang-Ying Lee and Yi-Jen Chen contributed equally to this work.
Medicina 2019, 55(12), 768; https://doi.org/10.3390/medicina55120768
Received: 10 October 2019 / Revised: 23 November 2019 / Accepted: 25 November 2019 / Published: 1 December 2019
Background and objectives: Bladder urothelial carcinoma is the most common type of genitourinary cancer. Patients with bladder cancer may have limited treatment efficacy related to drug toxicity, resistance or adverse effects, and novel therapeutic strategies to enhance treatment efficacy or increase sensitivity to drugs are of high clinical importance. Epigallocatechin gallate (EGCG) is a polyphenolic compound found in green tea leaves, and a potential anti-cancer agent in various cancer types through modulating and regulating multiple signaling pathways. The current study aimed to explore the role and novel therapeutic targets of EGCG on bladder urothelial carcinoma. Materials and Methods: The BFTC-905 cells, human urinary bladder transitional cell carcinoma (TCC) cell line, were treated with EGCG or water for 24 hours, and the expression profiles of mRNAs and microRNAs were analyzed using next generation sequencing (NGS). The enriched biological functions were determined using different bioinformatics databases. Results: A total of 108 differentially expressed genes in EGCG-treated bladder TCC cells were identified, which were mainly involved in nicotinamide adenine dinucleotide (NAD) biogenesis, inflammatory response and oxidation-reduction metabolism. Moreover, several microRNA-mRNA interactions that potentially participated in the response of bladder TCC to EGCG treatment, including miR-185-3p- ARRB1 (arrestin beta 1), miR-3116- MGAT5B (alpha-1,6-mannosylglycoprotein 6-beta-N-acetylglucosaminyltransferase B), miR-31-5p-TNS1 (tensin 1), miR-642a-5p-TNS1, miR-1226-3p- DLG2 (discs large homolog 2), miR-484-DLG2, and miR-22-3p- PPM1K (protein phosphatase 1K). Conclusions: The current findings provide insights into novel therapeutic targets and underlying mechanisms of action of EGCG treatment in bladder cancer. View Full-Text
Keywords: bladder cancer; epigallocatechin gallate; next-generation sequencing; bioinformatics; mRNA; microRNA bladder cancer; epigallocatechin gallate; next-generation sequencing; bioinformatics; mRNA; microRNA
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Lee, H.-Y.; Chen, Y.-J.; Chang, W.-A.; Li, W.-M.; Ke, H.-L.; Wu, W.-J.; Kuo, P.-L. Effects of Epigallocatechin Gallate (EGCG) on Urinary Bladder Urothelial Carcinoma―Next-Generation Sequencing and Bioinformatics Approaches. Medicina 2019, 55, 768.

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