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Apoptotic effect of Polygonum Cuspidatum in oral cancer cells through the regulation of specificity protein 1

J-A Shin1, J-H Shim, J-G Jeon

  • 1Department of Oral Pathology, School of Dentistry and Institute of Oral Bioscience, BK21 Project, Chonbuk National University, Jeonju, Korea.

Oral Diseases
|July 28, 2010
PubMed
Abstract

Insights

Polygonum cuspidatum root extract inhibits oral cancer cell growth by inducing apoptosis. This natural compound, particularly Emodin, works by down-regulating Specificity protein 1 (Sp1) signaling pathways.

Area of Science:

  • Phytochemistry
  • Molecular Biology
  • Cancer Research

Background:

  • Oral cancer presents a significant global health challenge.
  • Identifying novel therapeutic agents from natural sources is crucial for effective treatment.
  • Polygonum cuspidatum is a traditional medicinal herb with potential anti-cancer properties.

Purpose of the Study:

  • To investigate the anti-cancer effects of Polygonum cuspidatum root extract on oral cancer cells.
  • To elucidate the underlying mechanisms of growth inhibition and apoptosis induction.
  • To identify key bioactive compounds responsible for these effects.

Main Methods:

  • Extraction and fractionation of Polygonum cuspidatum root.
  • Cell proliferation assays (MTS assay).
  • Apoptosis analysis (Western blot, RT-PCR, DAPI staining, promoter assay).

Main Results:

  • Methanol extract of Polygonum cuspidatum (MEPC) inhibited oral cancer cell proliferation via caspase-dependent apoptosis.
  • MEPC and its fractions, particularly ethyl acetate fraction (EA) containing Emodin, significantly reduced cell growth.
  • Emodin and MEPC decreased Specificity protein 1 (Sp1) expression and its downstream target survivin, inducing apoptosis.

Conclusions:

  • Polygonum cuspidatum root extract, its fractions, and Emodin show potential as anti-oral cancer agents.
  • The mechanism involves down-regulation of Sp1 signaling, leading to apoptosis.
  • Further research into Emodin and Sp1 pathways could yield novel therapeutic strategies for oral cancer.

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