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Role of chemopreventive agents in cancer therapy

Thambi Dorai1, Bharat B Aggarwal

  • 1Comprehensive Cancer Center, Our Lady of Mercy Medical Center, New York Medical College, Bronx, NY 10466, USA.

Cancer Letters
|October 19, 2004
PubMed

Insights

Certain fruit and vegetable compounds, known as chemopreventive agents, show promise in cancer prevention and treatment. These natural compounds may enhance current cancer therapies by reversing chemoresistance and radioresistance.

Area of Science:

  • Oncology
  • Nutritional Science
  • Pharmacology

Background:

  • Carcinogenesis is a complex, multi-step process initiated by carcinogens.
  • Dietary intake of specific fruits and vegetables is linked to reduced cancer risk.
  • Phytochemicals from these foods act as chemopreventive agents.

Purpose of the Study:

  • To explore the therapeutic potential of phytochemicals as cancer chemopreventive agents.
  • To investigate the mechanisms by which these agents inhibit cancer progression.
  • To assess their role in overcoming cancer treatment resistance.

Main Methods:

  • Review of existing research on phytochemicals and their effects on cancer cells.
  • Analysis of studies detailing the molecular mechanisms of chemopreventive agents.
  • Examination of recent findings on their impact on chemoresistance and radioresistance.

Main Results:

  • Phytochemicals suppress cancer cell proliferation and angiogenesis.
  • They inhibit key signaling pathways (e.g., NF-kappaB, AP-1, JAK-STAT) and cyclooxygenase-2.
  • These agents induce apoptosis and suppress anti-apoptotic proteins.
  • Emerging evidence shows they reverse chemoresistance and radioresistance.

Conclusions:

  • Phytochemicals possess significant therapeutic value in cancer prevention.
  • Their mechanisms involve multiple anti-cancer pathways.
  • They show potential as adjuncts to conventional cancer therapies, enhancing treatment efficacy.

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