The presence of anti-GRP78 antibodies in the serum of patients with colorectal carcinoma: A potential biomarker for early cancer detection

Annat Raiter; Alexander Vilkin; Rachel Gingold; Zohar Levi; Marisa Halpern; Yaron Niv; Hardy Brita

doi:10.5301/jbm.5000086

The presence of anti-GRP78 antibodies in the serum of patients with colorectal carcinoma: A potential biomarker for early cancer detection

Annat Raiter, Alexander Vilkin, Rachel Gingold, Zohar Levi, Marisa Halpern, Yaron Niv, Hardy Brita^*

^*Corresponding author for this work

Clinical Departments

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Background: The identification of new biomarkers is required for early diagnosis of colorectal carcinoma patients (CRC), since about 20% of these patients are initially diagnosed with a distant metastatic disease. GRP78, a heat shock protein, functions also as a cell surface signaling receptor of cells under physiological stress. GRP78 was found to be expressed on the cell surface of various tumor cells. The presence of autoantibodies to GRP78 in cancer patient’s serum was found to be correlated with a poor prognosis. In this study we aimed to identify anti-GRP78 antibodies in the serum of 85 patients diagnosed by colonoscopy, as an early detection biomarker.

Methods: We developed an ELISA assay with recombinant GRP78 immobilized on 96-well culture plates and used an anti-IgG antibody to measure the sole anti-GRP78 IgGs.

Results: Testing for anti-GRP78 showed a significant increase in antibody titer in patients with a polyp and in CRC patients (p<0.001) compared to healthy subjects.

Conclusions: This is the first study showing the presence of anti-GRP78 at the very early stages of CRC.

Original language	English
Pages (from-to)	e431-e435
Journal	International Journal of Biological Markers
Volume	29
Issue number	4
DOIs	https://doi.org/10.5301/jbm.5000086
State	Published - 1 Oct 2014

Keywords

Anti-GRP78
CRC
Diagnosis
Polyps

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "The presence of anti-GRP78 antibodies in the serum of patients with colorectal carcinoma: A potential biomarker for early cancer detection",

abstract = "Background: The identification of new biomarkers is required for early diagnosis of colorectal carcinoma patients (CRC), since about 20% of these patients are initially diagnosed with a distant metastatic disease. GRP78, a heat shock protein, functions also as a cell surface signaling receptor of cells under physiological stress. GRP78 was found to be expressed on the cell surface of various tumor cells. The presence of autoantibodies to GRP78 in cancer patient{\textquoteright}s serum was found to be correlated with a poor prognosis. In this study we aimed to identify anti-GRP78 antibodies in the serum of 85 patients diagnosed by colonoscopy, as an early detection biomarker.Methods: We developed an ELISA assay with recombinant GRP78 immobilized on 96-well culture plates and used an anti-IgG antibody to measure the sole anti-GRP78 IgGs.Results: Testing for anti-GRP78 showed a significant increase in antibody titer in patients with a polyp and in CRC patients (p<0.001) compared to healthy subjects.Conclusions: This is the first study showing the presence of anti-GRP78 at the very early stages of CRC.",

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T1 - The presence of anti-GRP78 antibodies in the serum of patients with colorectal carcinoma

T2 - A potential biomarker for early cancer detection

AU - Raiter, Annat

AU - Vilkin, Alexander

AU - Gingold, Rachel

AU - Levi, Zohar

AU - Halpern, Marisa

AU - Niv, Yaron

AU - Brita, Hardy

PY - 2014/10/1

Y1 - 2014/10/1

N2 - Background: The identification of new biomarkers is required for early diagnosis of colorectal carcinoma patients (CRC), since about 20% of these patients are initially diagnosed with a distant metastatic disease. GRP78, a heat shock protein, functions also as a cell surface signaling receptor of cells under physiological stress. GRP78 was found to be expressed on the cell surface of various tumor cells. The presence of autoantibodies to GRP78 in cancer patient’s serum was found to be correlated with a poor prognosis. In this study we aimed to identify anti-GRP78 antibodies in the serum of 85 patients diagnosed by colonoscopy, as an early detection biomarker.Methods: We developed an ELISA assay with recombinant GRP78 immobilized on 96-well culture plates and used an anti-IgG antibody to measure the sole anti-GRP78 IgGs.Results: Testing for anti-GRP78 showed a significant increase in antibody titer in patients with a polyp and in CRC patients (p<0.001) compared to healthy subjects.Conclusions: This is the first study showing the presence of anti-GRP78 at the very early stages of CRC.

AB - Background: The identification of new biomarkers is required for early diagnosis of colorectal carcinoma patients (CRC), since about 20% of these patients are initially diagnosed with a distant metastatic disease. GRP78, a heat shock protein, functions also as a cell surface signaling receptor of cells under physiological stress. GRP78 was found to be expressed on the cell surface of various tumor cells. The presence of autoantibodies to GRP78 in cancer patient’s serum was found to be correlated with a poor prognosis. In this study we aimed to identify anti-GRP78 antibodies in the serum of 85 patients diagnosed by colonoscopy, as an early detection biomarker.Methods: We developed an ELISA assay with recombinant GRP78 immobilized on 96-well culture plates and used an anti-IgG antibody to measure the sole anti-GRP78 IgGs.Results: Testing for anti-GRP78 showed a significant increase in antibody titer in patients with a polyp and in CRC patients (p<0.001) compared to healthy subjects.Conclusions: This is the first study showing the presence of anti-GRP78 at the very early stages of CRC.

KW - Anti-GRP78

KW - CRC

KW - Diagnosis

KW - Polyps

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The presence of anti-GRP78 antibodies in the serum of patients with colorectal carcinoma: A potential biomarker for early cancer detection

Abstract

Keywords

UN SDGs

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