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Disruption of tubulin polymerization and cell proliferation by 1-naphthylarsonic acid

Roya Mahinpour1, Gholamhossein Riazi, Mohammad A Shokrgozar

  • 1Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran.

Cell Biology International
|January 5, 2012
PubMed

Insights

1-naphthylarsonic acid (1-NAA), an arsenical compound, inhibits cancer cell growth by disrupting microtubule polymerization. It forms abnormal polymers, leading to cell death and demonstrating potential as an anticancer agent.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Pharmacology

Background:

  • Arsenical compounds display selective toxicity towards cancer cells.
  • Microtubules are a key target for anticancer drugs, including arsenicals.

Purpose of the Study:

  • To investigate the interaction of 1-naphthylarsonic acid (1-NAA) with microtubule polymerization.
  • To evaluate the anticancer effects of 1-NAA on cancer cell proliferation and apoptosis.

Main Methods:

  • In vitro and cellular studies using sheep brain microtubules and HeLa cells.
  • Transmission electron microscopy and computational docking for structural analysis.
  • MTT assay for proliferation, and fluorescence microscopy with TUNEL assay for apoptosis.

Main Results:

  • 1-NAA was found to inhibit tubulin polymerization.
  • Abnormal polymer formation with high affinity to the inner cell wall was observed.
  • 1-NAA reduced proliferation and induced apoptosis in HeLa cells.

Conclusions:

  • 1-NAA disrupts microtubule dynamics, leading to cancer cell death.
  • The mechanism involves the formation of aberrant polymers affecting microtubule stability.
  • 1-NAA shows promise as a novel anticancer therapeutic agent targeting microtubules.

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