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Intramucosal Inoculation of Squamous Cell Carcinoma Cells in Mice for Tumor Immune Profiling and Treatment Response Assessment
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Slug inhibition increases radiosensitivity of oral squamous cell carcinoma cells by upregulating PUMA

Fangfang Jiang1, Lijie Zhou1, Changbo Wei1

  • 1Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, P.R. China.

International Journal of Oncology
|June 10, 2016
PubMed

Insights

Modulating Slug expression with siRNA enhances oral cancer cell sensitivity to X-ray radiation by increasing PUMA. This radio-gene therapy approach shows promise for improving cancer treatment outcomes.

Area of Science:

  • Oncology
  • Molecular Biology
  • Radiotherapy

Background:

  • Radio-gene therapy is an emerging cancer treatment strategy.
  • Slug protein is implicated in cancer radioresistance and apoptosis evasion.
  • Oral squamous cell carcinoma (OSCC) exhibits radioresistance.

Purpose of the Study:

  • To investigate the effect of Slug modulation via siRNA on OSCC radiosensitivity.
  • To determine if Slug siRNA influences PUMA expression in OSCC cells.
  • To assess the potential of targeting Slug for enhancing radiotherapy efficacy in OSCC.

Main Methods:

  • Utilized two OSCC cell lines (HSC3 and HSC6).
  • Transfected cells with small interfering RNA (siRNA) targeting Slug.
  • Exposed transfected cells to in vitro X-ray irradiation.
  • Analyzed Slug and PUMA expression levels.
  • Assessed cell survival, proliferation, apoptosis, and radiosensitivity.

Main Results:

  • Slug siRNA transfection led to decreased Slug and increased PUMA expression in both cell lines.
  • Slug siRNA treatment significantly reduced cell survival and proliferation rates.
  • Apoptosis rates were elevated in Slug siRNA-transfected cells.
  • Combined Slug siRNA and X-ray irradiation demonstrated enhanced radiosensitivity in OSCC cells.

Conclusions:

  • Slug siRNA transfection, combined with radiation, upregulates PUMA expression.
  • This upregulation of PUMA contributes to the enhanced radiosensitivity of OSCC cells.
  • Controlling Slug expression via siRNA is a potential strategy to improve OSCC sensitivity to X-ray irradiation.

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