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Silver-based nanoparticles induce apoptosis in human colon cancer cells mediated through p53

Shakti Ranjan Satapathy1, Purusottam Mohapatra, Ranjan Preet

  • 1Cancer Biology Division, KIIT School of Biotechnology, KIIT University, Campus-11, Patia, Bhubaneswar, Orissa 751024, India.

Nanomedicine (London, England)
|March 22, 2013
PubMed
Abstract

Insights

Silver-based nanoparticles (AgNPs) show anticancer potential by inducing apoptosis and DNA damage in colon cancer cells. Their efficacy is dependent on the p53 tumor suppressor protein.

Area of Science:

  • Nanotechnology
  • Oncology
  • Molecular Biology

Background:

  • Silver-based nanoparticles (AgNPs) are being explored for their therapeutic potential.
  • Understanding the mechanisms of AgNPs' biological activity is crucial for developing new cancer treatments.

Purpose of the Study:

  • To investigate the anticancer effects of AgNPs in human colon cancer cells.
  • To elucidate the molecular mechanisms underlying AgNP-induced cytotoxicity.

Main Methods:

  • Synthesis and characterization of starch-capped AgNPs.
  • Evaluation of AgNP biological activity using biochemical assays in HCT116 colon cancer cells.
  • Analysis of apoptosis markers, cell cycle progression, DNA damage, and key signaling pathways (p53, AKT, NF-κB).

Main Results:

  • AgNPs significantly reduced colon cancer cell growth and viability.
  • AgNP treatment induced apoptosis, increased DNA damage, and altered cell cycle distribution.
  • The anticancer effects were mediated through p53-dependent pathways, involving modulation of BAX/BCL-XL ratio, caspases, AKT, and NF-κB signaling.

Conclusions:

  • AgNPs demonstrate significant anticancer properties against colon cancer cells.
  • The mechanism of action is p53-dependent, highlighting the role of this tumor suppressor in AgNP-induced cell death.

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