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Clinica Chimica Acta
Volume 362, Issues 1-2, December 2005, Pages 125-130
 
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doi:10.1016/j.cccn.2005.06.009    How to Cite or Link Using DOI (Opens New Window)
Copyright © 2005 Elsevier B.V. All rights reserved.

Detection of autoantibodies to survivin and livin in sera from patients with breast cancer

Atsuhito Yagihashia, Corresponding Author Contact Information, E-mail The Corresponding Author, Tohsei Ohmurab, Koichi Asanumaa, Daisuke Kobayashia, Naoki Tsujia, Toshihiko Torigoec, Noriyuki Satoc, Koichi Hiratab and Naoki Watanabea

aDepartment of Clinical Laboratory Medicine, Sapporo Medical University School of Medicine, South-1, West-16, Chuo-ku, Sapporo 060-8543, Japan bDepartment of Surgery, Sapporo Medical University School of Medicine, South-1, West-16, Chuo-ku, Sapporo 060-8543, Japan cDepartment of Pathology, Sapporo Medical University School of Medicine, South-1, West-16, Chuo-ku, Sapporo 060-8543, Japan

Received 15 February 2005; 
revised 2 June 2005; 
accepted 3 June 2005. 
Available online 18 July 2005.

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Abstract

Background

Survivin and livin are highly expressed in cancer cells and transformed cells, but show little or no expression in normal differentiated tissues. Human antibody responses to tumor-associated antigens have been detected, but little is known about the response to survivin and livin in breast cancer patients.

Methods

We examined the prevalence of anti-survivin and livin antibodies in breast cancer patients with a specific enzyme-linked immunosorbent assay (ELISA) using recombinant protein.

Results

Using a cutoff value for positivity determined as the mean absorbance + 2SD for healthy control samples, sera from 11 of 46 breast cancer patients (23.9%) were positive by the ELISA using recombinant survivin protein. Of 46 samples from the same breast cancer patients, 15 (32.6%) were positive for anti-livin antibodies. In addition, 24 (52.2%) were positive for 1 or both ELISAs using the respective proteins. Intensity of anti-livin antibody responses did not correlate with intensity of anti-survivin responses.

Conclusions

Anti-livin antibodies were detected in sera from breast cancer patients by an anti-livin ELISA using full-length recombinant livin protein. Like survivin, livin may act as a major cancer antigen in breast cancer patients.

Keywords: Survivin; Livin; Autoantibody; Breast cancer

Article Outline

1. Introduction
2. Materials and methods
2.1. Samples
2.2. Immunoassays for anti-livin antibody and anti-survivin antibody
2.3. Preabsorption of samples with recombinant survivin, livin or GFP
2.4. Statistical analysis
3. Results
3.1. Detection of anti-livin and anti-survivin antibodies
3.2. Preabsorption of anti-livin and anti-survivin antibodies
4. Discussion
References





Clinica Chimica Acta
Volume 362, Issues 1-2, December 2005, Pages 125-130
 
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