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Nuclear factor-kappa B as a promising target for selenium chemoprevention in rat hepatocarcinogenesis

Nasar Y Alwahaibi1, Siti B Budin, Jamaludin Mohamed

  • 1Department of Biomedical Sciences, Faculty of Allied Health Sciences, National University of Malaysia, Julan Raja Muda Abdul Aziz, Kuala Lumpur, Malaysia. nasarsidab@yahoo.com

Journal of Gastroenterology and Hepatology
|May 25, 2010
PubMed
Abstract

Insights

Sodium selenite may prevent liver cancer by inhibiting the nuclear factor-kappaB (NF-kappaB) pathway during cancer initiation. Further research is needed to confirm these findings in selenium chemoprevention strategies.

Area of Science:

  • Hepatocarcinogenesis research
  • Molecular mechanisms of cancer chemoprevention
  • Nutritional biochemistry and cancer

Background:

  • The precise molecular mechanisms underlying selenium's cancer chemoprevention are not fully understood.
  • Investigating the role of key signaling pathways and gene expression in chemically induced liver cancer is crucial.

Purpose of the Study:

  • To investigate the effects of sodium selenite on the gene expression of nuclear factor-kappaB (NF-kappaB), tumor growth factor-alpha (TGF-alpha), and cyclin D1.
  • To explore the preventive and therapeutic potential of sodium selenite in a rat model of chemically induced hepatocarcinogenesis.

Main Methods:

  • Rats were assigned to six groups, including negative control, positive control (DEN + 2-AAF), and groups for preventive and therapeutic sodium selenite administration.
  • Real-time polymerase chain reaction was employed to quantify the relative gene expression of NF-kappaB, TGF-alpha, and cyclin D1 in liver tissues.

Main Results:

  • Sodium selenite significantly reduced NF-kappaB gene expression in the preventive group compared to controls (P < 0.05).
  • NF-kappaB expression was elevated in positive controls and the therapeutic group versus negative controls.
  • No significant differences in TGF-alpha and cyclin D1 gene expression were observed across all experimental groups.

Conclusions:

  • Inhibition of the NF-kappaB pathway during the initiation phase of hepatocarcinogenesis represents a potential mechanism for selenium chemoprevention.
  • Further investigations are warranted to fully elucidate selenium's role in cancer prevention and its molecular targets.

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