TFPI-2 expression is decreased in bladder cancer and is related to apoptosis
Chenchen Feng1, Yatfaat Ho, Chuanyu Sun
1Department of Urology, Huashan Hospital, Fudan University, Shanghai, PR China.
Purpose:
This study aimed to study the role of TFPI-2 in bladder cancer and its relation with apoptosis.
Methods:
Immunohistochemical (IHC) staining of TFPI- 2 and TUNEL were applied. By semiquantitative analysis of the IHC data, we compared the TFPI-2 expression with clinicopathological parameters of 24 bladder cancer samples. TUNEL assay was used to study the apoptotic level of bladder cancer cells. Also, quantitative PCR and Western blot were used to confirm IHC results.
Results:
The expression of TFPI-2 decreased with progression of bladder cancer grade (p<0.001) and tumor stage (p<0.001). Also, TFPI-2 expression was not significantly decreased in smaller and single tumors (p=0.536 and p=0.378, respectively). Increased TFPI-2 expression was significantly correlated with increased apoptosis (p<0.001). Lower TFPI-2 was also correlated with lower Ki67 index but not with TP53 positivity (p=0.003 and p=0.195, respectively). Expression of TFPI-2 detected by IHC was consistent with that detected by Western blotting and PCR.
Conclusion:
TFPI-2 expression was decreased in bladder cancer. TFPI-2 expression was decreased with progression in tumor grade and stage and was correlated to decreased apoptosis. Our findings indicated that TFPI-2 could be a marker of bladder cancer and enhancement of TFPI-2 could combat bladder cancer.
Insights
Tissue factor pathway inhibitor-2 (TFPI-2) expression is reduced in bladder cancer, correlating with tumor progression and decreased apoptosis. Lower TFPI-2 levels may indicate a poorer prognosis, suggesting TFPI-2 as a potential therapeutic target.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Bladder cancer is a significant global health concern.
- Understanding the molecular mechanisms underlying bladder cancer progression is crucial for developing effective treatments.
- Tissue factor pathway inhibitor-2 (TFPI-2) is a protein with potential roles in cancer biology.
Purpose of the Study:
- To investigate the expression levels of TFPI-2 in bladder cancer tissues.
- To determine the relationship between TFPI-2 expression and clinicopathological features of bladder cancer.
- To explore the correlation between TFPI-2 and apoptosis in bladder cancer cells.
Main Methods:
- Immunohistochemical (IHC) staining was used to assess TFPI-2 expression in 24 bladder cancer samples.
- TUNEL assay was employed to evaluate the apoptotic index of bladder cancer cells.
- Quantitative PCR and Western blot analyses were performed to validate IHC findings.
Main Results:
- TFPI-2 expression was significantly decreased in bladder cancer, with reduced levels correlating with higher tumor grade and stage.
- TFPI-2 expression showed a positive correlation with increased apoptosis and a negative correlation with the Ki67 proliferation index.
- IHC results for TFPI-2 expression were consistent with quantitative PCR and Western blot data.
Conclusions:
- TFPI-2 expression is downregulated in bladder cancer and inversely associated with tumor progression and apoptosis.
- TFPI-2 may serve as a valuable biomarker for bladder cancer diagnosis and prognosis.
- Enhancing TFPI-2 levels could represent a potential therapeutic strategy to combat bladder cancer.
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