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Snail family proteins in cervical squamous carcinoma: expression and significance
Weidong Zhao1, Ying Zhou, Hanjie Xu
1Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, Jinan, China.
Purpose:
Epithelial-mesenchymal transition (EMT) is crucial for tumor progression and metastasis. Snail family members, including Snail, Slug and Smuc, are the transcription factors that repress E-cadherin expression and induce epithelial-mesenchymal transition in some tumor tissues. In this study, the expression of snail family proteins in cervical squamous cancers was evaluated.
Methods:
A series of 144 samples, comprising 28 cases of normal cervical tissues and 116 cases of squamous cell carcinoma (SCC), were used for analysis. The expression of Snail, Slug, Smuc, E-cadherin and vimentin was assessed in the tissues by immunohistochemistry and was statistically analyzed by SPSS13.0.
Results:
The increase in nuclear expression of snail and smuc was associated with down-regulation of E-cadherin and up-regulation of vimentin. The nuclear expression of Snail and Smuc was positively associated with lymph node metastasis of the SCC, and the nuclear expression of Snail was also positively related with histological differentiation. In contrast, tumor size, histological differentiation, lymph node metastasis and stages of the SCC were not associated with the expression of Slug, cytpolasmic Smuc or cytoplasm levels of Snail.
Conclusion:
Snail and Smuc proteins, but not Slug, may contribute to the onset of EMT in SCC. Inhibiting the expression of Snail and Smuc might be a potential therapeutic target for the treatment of metastasis and invasion of cervical carcinomas.
Insights
Snail and Smuc proteins are linked to epithelial-mesenchymal transition (EMT) in cervical squamous cell carcinoma (SCC). Targeting these proteins may offer new therapeutic strategies for treating cervical cancer metastasis.
Area of Science:
- Oncology
- Cell Biology
- Molecular Pathology
Background:
- Epithelial-mesenchymal transition (EMT) is a key process in tumor progression and metastasis.
- Snail family transcription factors (Snail, Slug, Smuc) are known to regulate EMT by repressing E-cadherin expression.
Purpose of the Study:
- To evaluate the expression of Snail family proteins in cervical squamous cell carcinoma (SCC).
- To investigate the association between Snail, Slug, and Smuc expression and clinicopathological features of SCC.
Main Methods:
- Immunohistochemistry was used to assess the expression of Snail, Slug, Smuc, E-cadherin, and vimentin in 144 cervical tissue samples (28 normal, 116 SCC).
- Statistical analysis was performed using SPSS 13.0 to correlate protein expression with clinicopathological parameters.
Main Results:
- Increased nuclear expression of Snail and Smuc correlated with decreased E-cadherin and increased vimentin, indicating EMT.
- Nuclear Snail and Smuc expression were positively associated with lymph node metastasis in SCC.
- Slug expression, cytoplasmic Snail, and cytoplasmic Smuc levels showed no significant association with tumor characteristics.
Conclusions:
- Snail and Smuc proteins, unlike Slug, appear to play a role in initiating EMT in cervical squamous cell carcinoma.
- Targeting Snail and Smuc expression presents a potential therapeutic avenue for managing cervical cancer invasion and metastasis.
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