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Research ArticleExperimental Studies

Effect of Steep Pulsed Electric Field on Proliferation, Viscoelasticity and Adhesion of Human Hepatoma SMMC-7721 Cells

GUANBIN SONG, JIAN QIN, CHENGGUO YAO and YANG JU
Anticancer Research July 2008, 28 (4B) 2245-2251;
GUANBIN SONG
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  • For correspondence: song@cqu.edu.cn
JIAN QIN
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CHENGGUO YAO
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YANG JU
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Abstract

It has been proven that steep pulsed electric field (SPEF) can directly kill tumor cells and plays an important role in anticancer treatment. The biorheological mechanisms, however, that destroy tumor cells are almost unknown. To resolve this issue, here, an SPEF generator was used to assess the effects of high- and low-dose SPEF on the proliferation of human hepatoma SMMC-7721 cells by MTT assay, and on the viscoelasticity, adhesion of SMMC-7721 cells to endothelial cells by micropipette aspiration technique. Viability and proliferation of SPEF-treated SMMC-7721 cells were significantly inhibited. Cell cycle analysis indicated that SPEF arrested the cell cycle progression of SMMC-7721 cells at the G0/G1 transition to the S-phase. Viscoelastic data fitted by a standard linear solid model showed that viscoelasticity of SMMC-7721 cells changed after treatment with SPEF. Moreover, the adhesive force of low-dose SPEF-treated SMMC-7721 cells to endothelial cells markedly decreased compared to that of control cells. These results suggest that the suppressant effects of SPEF on the proliferation of SMMC-7721 cells appeared to be mediated, at least in part, through arresting cell cycle progression and altering the viscoelastic and adhesive properties of the cells, which provides a novel biorheological mechanism for the antitumor therapy of SPEF.

  • Steep pulsed electric field (SPEF)
  • hepatoma
  • proliferation
  • biorheology
  • micropipette aspiration

Footnotes

  • Received February 27, 2008.
  • Revision received May 22, 2008.
  • Accepted May 26, 2008.
  • Copyright© 2008 International Institute of Anticancer Research (Dr. John G. Delinassios), All rights reserved
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Anticancer Research: 28 (4B)
Anticancer Research
Vol. 28, Issue 4B
July-August 2008
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Effect of Steep Pulsed Electric Field on Proliferation, Viscoelasticity and Adhesion of Human Hepatoma SMMC-7721 Cells
GUANBIN SONG, JIAN QIN, CHENGGUO YAO, YANG JU
Anticancer Research Jul 2008, 28 (4B) 2245-2251;

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Effect of Steep Pulsed Electric Field on Proliferation, Viscoelasticity and Adhesion of Human Hepatoma SMMC-7721 Cells
GUANBIN SONG, JIAN QIN, CHENGGUO YAO, YANG JU
Anticancer Research Jul 2008, 28 (4B) 2245-2251;
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