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Selenoprotein P mRNA expression in human hepatic tissues
Chun-Li Li1, Ke-Jun Nan, Tao Tian
1Department of Medical Oncology, The First Affiliated Hospital of the School of Medicine, Xi'an Jiaotong University, Xi'an 710061, Shaanxi Province, China. chunli5158@163.com
World Journal of Gastroenterology
|May 19, 2007
Summary
Selenoprotein P mRNA (SeP mRNA) expression significantly decreases in hepatocellular carcinoma (HCC) tissues compared to normal liver. This suggests SeP plays a role in HCC development.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- Selenoprotein P (SeP) is an important selenium-transporting protein.
- Altered gene expression is implicated in liver diseases, including hepatocellular carcinoma (HCC).
Purpose of the Study:
- To investigate the expression of selenoprotein P mRNA (SeP mRNA) in normal liver, liver cirrhosis, and HCC tissues.
- To determine the relationship between SeP mRNA expression and HCC occurrence and progression.
Main Methods:
- In situ hybridization using a cDNA probe was employed to detect SeP mRNA expression.
- Tissues analyzed included normal liver, liver cirrhosis, and HCC.
- Expression levels were quantified and localization within cells was observed.
Main Results:
- SeP mRNA was detected in all tissue types: normal liver (84.6%), liver cirrhosis (45.0%), and HCC (30.0%).
- Positive signals were observed in hepatic interstitial substance, endothelial cells, and lymphocytes.
- Expression levels and cellular localization (nucleus, cytoplasm, nucleolus) differed significantly between normal liver and HCC tissues.
Conclusions:
- A significant difference in SeP mRNA expression was found between normal liver and HCC tissues (84.6% vs 30.0%, P=0.003).
- The findings suggest that SeP may play a role in the occurrence and development of HCC.
