Volume 5, Issue 3, September 2019, Page: 87-94
Regulation of TGF-β1-Mediated Wnt/β-catenin Pathways Plays an Important Role in EMT-like Transformation Induced by Cadmium
Yanlin Zhang, Department of Environmental Monitoring, Guangdong Vocational College of Environmental Protection Engineering, Foshan, China
Jiandong Wu, Department of Environmental Monitoring, Guangdong Vocational College of Environmental Protection Engineering, Foshan, China
Lulu Ren, Department of Environmental Monitoring, Guangdong Vocational College of Environmental Protection Engineering, Foshan, China
Guning Wang, Department of Environmental Monitoring, Guangdong Vocational College of Environmental Protection Engineering, Foshan, China
Lihong Yuan, Department of Environmental Monitoring, Guangdong Vocational College of Environmental Protection Engineering, Foshan, China
Zhihui Zou, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, China
Received: Nov. 18, 2018;       Accepted: Dec. 13, 2018;       Published: Oct. 11, 2019
DOI: 10.11648/j.jher.20190503.13      View  50      Downloads  7
Abstract
Backgrounds Some studies have reported that different dosage of cadmium (Cd) had a biphasic effect on cells viability, Cd at a dose of more than 20 μM can induce excessive apoptosis which past studies were mainly concentrated on while there has been few reports on a relatively lower dose of Cd causing abnormal proliferation. Kidney is the most sensitive target organ of Cd, however, the mechanism how Cd at a relatively lower dose affects the proliferation of renal tubular epithelial cells (RTEC) is not yet clear at present. Objectives To explore the toxic effect of Cd at a relatively lower dose on RTEC and study the mechanism how the TGF-β1-mediated Wnt/β-catenin pathways involved in EMT-like transformation induced by Cadmium. Methods The RTEC were isolated by mixed collagenase digestion methods and the effect of Cd at different dose on cell viability was detected by MTT assay. The effect of Cd at Hormesis zone dose on the expression of c-myc, cyclinD1, α-SMA, TGF-β1, Wnt and β-catenin were determined by qRT-PCR. Results When exposed for 24h-72h, Cd at a dose of 2.5 μM had maximum proliferation promoting effect. Cd at Hormesis zone dose could up-regulate the expression of cell cycle and proliferation key regulators c-myc and cyclinD1 in an obvious time-dependent manner. Cd at Hormesis zone dose could significantly promote α-SMA, TGF-β1, Wnt and β-catenin mRNA expression. Conclusions Cd at Hormesis zone dose could induce RTEC significant abnormal proliferation and EMT-like transformation. The activation of TGF-β1-mediated Wnt/β-catenin pathways might play a key role in EMT-like transformation induced by Cd at Hormesis zone dose.
Keywords
Wnt/β-catenin, TGF-β1, EMT-like Transformation, Cadmium
To cite this article
Yanlin Zhang, Jiandong Wu, Lulu Ren, Guning Wang, Lihong Yuan, Zhihui Zou, Regulation of TGF-β1-Mediated Wnt/β-catenin Pathways Plays an Important Role in EMT-like Transformation Induced by Cadmium, Journal of Health and Environmental Research. Vol. 5, No. 3, 2019, pp. 87-94. doi: 10.11648/j.jher.20190503.13
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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