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Updated: Jun 20, 2026

A Model for Perineural Invasion in Head and Neck Squamous Cell Carcinoma
Published on: January 5, 2017
Proinflammatory mediators upregulate snail in head and neck squamous cell carcinoma
Maie A St John1, Mariam Dohadwala, Jie Luo
1Division of Head and Neck Surgery, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California 90095, USA. mstjohn@mednet.ucla.edu
Interleukin-1beta (IL-1beta) promotes head and neck squamous cell carcinoma (HNSCC) progression by inducing Epithelial-Mesenchymal Transition (EMT). This involves regulating Snail and cyclooxygenase-2 (COX-2)-dependent E-cadherin expression, impacting tumor growth and metastasis.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Inflammatory cytokines are linked to head and neck squamous cell carcinoma (HNSCC) progression.
- Interleukin-1beta (IL-1beta) is investigated for its role in HNSCC's Epithelial-Mesenchymal Transition (EMT).
Purpose of the Study:
- To elucidate the mechanisms by which IL-1beta contributes to EMT in HNSCC.
- To explore the relationship between IL-1beta, Snail, cyclooxygenase-2 (COX-2), and E-cadherin in HNSCC.
Main Methods:
- Evaluation of IL-1beta effects on EMT markers in HNSCC surgical specimens and cell lines.
- Correlation analysis with tumor histology and assessment using a SCID xenograft model with Snail overexpression.
- Utilized small hairpin RNA (shRNA) for COX-2 and Snail knockdown.
Main Results:
- IL-1beta downregulated E-cadherin and upregulated COX-2 and Snail expression in HNSCC cells.
- IL-1beta enhanced Snail binding to chromatin, driving E-cadherin repression.
- Snail overexpression in a xenograft model increased primary and metastatic tumor burden.
Conclusions:
- IL-1beta orchestrates EMT in HNSCC via Snail-mediated, COX-2-dependent regulation of E-cadherin.
- This study reveals Snail's role in inflammation-induced EMT in HNSCC.
- The identified pathway offers potential targets for HNSCC chemoprevention and therapy.
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