Faculty Publications

Atrazine Exposure Leads To Altered Growth Of Hepg2 Cells

Document Type

Article

Keywords

Atrazine, Cyclins, Flow cytometry, HepG2, Herbicides

Journal/Book/Conference Title

Toxicology in Vitro

Volume

25

Issue

3

First Page

644

Last Page

651

Abstract

Atrazine is one of the most commonly used herbicides in the United States. While effective on target plants, it has been associated with harmful health effects in non-target organisms such as fish, amphibians and mammals. In this study, growth effects on human liver cells were determined after exposure to increasing concentrations of this herbicide. Growth of immortalized human hepatoma HepG2 cells was inhibited by atrazine concentrations of 625. ppb after 72. h exposure and flow cytometry analysis demonstrated HepG2 cells exposed to 100. ppb atrazine accumulated in S phase after 48. h compared to untreated cells. Expression of cell cycle specific cyclin proteins was altered after atrazine exposure with cyclin E levels significantly decreased after a 24. h exposure and cyclin B levels decreased after 48. h. This study demonstrates that relatively low levels of atrazine exposure can affect growth and lead to disruptions in the cell cycle regulation of immortalized human liver cells. © 2011 Elsevier Ltd.

Department

Department of Biology

Original Publication Date

4-1-2011

DOI of published version

10.1016/j.tiv.2011.01.001

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