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Journal of Experimental & Clinical Cancer Research
Published in: Journal of Experimental & Clinical Cancer Research 1/2010

Open Access 01-12-2010 | Research

Anti-HER-2 engineering antibody ChA21 inhibits growth and induces apoptosis of SK-OV-3 cells

Authors: AnLi Zhang, Hua Xue, XiaoGuang Ling, Yi Gao, Feng Yang, LianSheng Cheng, Jing Liu, Qiang Wu

Published in: Journal of Experimental & Clinical Cancer Research | Issue 1/2010

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Abstract

Background and Aims

Anti-HER-2 antibodies targeting distinct epitopes have different biological functions on cancer cells. In a previous study, we demonstrated that anti-HER-2 engineering antibody ChA21 was able to bind to subdomain I of HER-2 extracellular domain. In this study, The effects of ChA21 on growth and apoptosis against ovarian carcinoma cell SK-OV-3 over-expressing HER-2 in vitro and in vivo were investigated.

Methods

Cell growth inhibition was evaluated by MTT assay. Apoptosis was detected by TUNEL stain, transmission electron microscopy and flow cytometry on cultured cells and tissue sections from nude mice xenografts. The apoptosis-related proteins Bax and Bcl-2 were assessed by immunohistochemistry.

Results

We found that treatment of ChA21 caused a dose-dependent decrease of cell proliferation in vitro and a significant inhibition of tumor growth in vivo. ChA21 therapy led to a significant increase in the induction of apoptosis, and up-regulated the expression of Bax, while the expression of Bcl-2 was down-regulated.

Conclusion

These data suggest that ChA21 inhibits the growth and induces apoptosis of SK-OV-3 via regulating the balance between Bax and Bcl-2.
Appendix
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Metadata
Title
Anti-HER-2 engineering antibody ChA21 inhibits growth and induces apoptosis of SK-OV-3 cells
Authors
AnLi Zhang
Hua Xue
XiaoGuang Ling
Yi Gao
Feng Yang
LianSheng Cheng
Jing Liu
Qiang Wu
Publication date
01-12-2010
Publisher
BioMed Central
Published in
Journal of Experimental & Clinical Cancer Research / Issue 1/2010
Electronic ISSN: 1756-9966
DOI
https://doi.org/10.1186/1756-9966-29-23

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