NDLI: Involvement of SET in the Wnt signaling pathway and the development of human colorectal cancer

Content Provider	PubMed Central
Author	Dong, Lei Zhu, Jianjun Wen, Xiaoxia Jiang, Tingting Chen, Yao
Copyright Year	2014
Abstract	The SET oncoprotein is involved in cancer progression by modulating multiple cellular processes, including the inhibition of the tumor suppressor, protein phosphatase 2 (PP2A). Based upon these multiple activities, we hypothesized that targeted inhibition of SET is likely to have multiple discrete and measurable effects on cancer cells. In the present study, the mRNA expression levels of SET, PP2A and β-catenin were examined in 31 pairs of human colorectal adenocarcinoma tissues and corresponding adjacent normal colorectal tissues by quantitative real-time polymerase chain reaction (qPCR). A small interfering RNA targeting SET was transfected into the human colon carcinoma cell lines, LS174T and SW480. The mRNA levels of SET, PP2A, β-catenin, c-Myc, E-cadherin and p53 were determined by qPCR analysis and the protein levels of SET, c-Myc, PP2A and β-catenin were examined by western blot analysis. mRNA expression levels of SET and β-catenin were found to be elevated in 22 (70.9%) samples, while PP2A expression levels were upregulated in eight (25.8%) samples. In addition, the knockdown of SET mRNA expression caused the upregulation of PP2A and c-Myc in the two cell lines, whereas β-catenin, E-cadherin and p53 mRNA expression was downregulated. Consistent with these results, the protein expression of β-catenin and c-Myc was found to be downregulated, whereas PP2A was upregulated at the protein level. Based on these results, we proposed that SET is essential in the carcinogenesis of human colorectal adenocarcinoma. In addition, it is suggested that SET promotes carcinogenesis through regulation of the Wnt signaling pathway.
Related Links	http://dx.doi.org/10.3892/ol.2014.1866
Ending Page	1208
Page Count	6
Starting Page	1203
File Format	PDF
ISSN	17921074
e-ISSN	17921082
Journal	Oncology Letters
Issue Number	4
Volume Number	7
Language	English
Publisher	D.A. Spandidos
Publisher Date	2014-02-01
Access Restriction	Open
Rights Holder	D.A. Spandidos
Subject Keyword	Cancer Research Oncology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Cancer Research Oncology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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