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Updated: Feb 9, 2026

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Published on: July 12, 2012
Study on the methylation status of SPINT2 gene and its expression in cervical carcinoma
Background:
Cervical cancer is one of the malignant tumors which seriously threaten the women health worldwide. SPINT2 is an endogenous inhibitor of hepatocyte growth factor activator and down regulated or even silenced in many human malignant tumors.
Objective:
This study was performed to explore the promoter methylation status of SPINT2 gene and the effect on its expression in cervical carcinoma.
Methods:
HPV-positive and -negative cervical cancer cell lines, 50 cases of cervical carcinoma tissues, and 20 cases of normal cervical tissues were used for this study. The methylation status of promoter and the first exon of SPINT2 gene were analyzed. The expression of SPINT2 was analyzed by qRT-PCR.
Results:
HPV E6/E7 infection affects SPINT2 methylation rate in cell lines. SPINT2 methylation rate of HT-3E6/E7 was 8.8%, while the methylation rate of SPINT2 in HT-3 was 0%. In cervical tissues, the methylation rate of SPINT2 in cervical cancers was 54%, while the methylation rate of SPINT2 in normal cervical samples was 25%. As for cervical cancers, the methylation rate of SPINT2 gene was higher in grade 3 than those of grade 2.
Conclusions:
The expression of SPINT2 gene is regulated by its methylation status, and the methylation status of SPINT2 is altered by HPV infection. The aberrant methylation status of SPINT2 gene may play an important role in the development of cervical cancer.
Insights
Aberrant methylation of the SPINT2 gene, influenced by HPV infection, is linked to cervical cancer development. This gene
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Cervical cancer poses a significant global health threat to women.
- SPINT2, an inhibitor of hepatocyte growth factor activator, is often downregulated or silenced in malignant tumors.
Purpose of the Study:
- To investigate the promoter methylation status of the SPINT2 gene in cervical carcinoma.
- To determine the effect of SPINT2 methylation on its gene expression within cervical cancer.
Main Methods:
- Analysis of SPINT2 promoter and first exon methylation in HPV-positive/negative cervical cancer cell lines and tissues.
- Quantification of SPINT2 gene expression using qRT-PCR in cervical cancer and normal samples.
Main Results:
- SPINT2 methylation rates were 54% in cervical cancers versus 25% in normal tissues.
- HPV E6/E7 infection was associated with altered SPINT2 methylation rates in cell lines.
- Higher SPINT2 methylation was observed in higher-grade cervical cancers (grade 3 vs. grade 2).
Conclusions:
- SPINT2 gene expression is regulated by its methylation status.
- HPV infection alters the methylation status of SPINT2.
- Aberrant SPINT2 methylation may contribute to cervical cancer development.
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