Peroxiredoxin 1 is a tumor-associated antigen in esophageal squamous cell carcinoma.

Abstract:

:Peroxiredoxin 1 (Prdx1) is an antioxidant and plays an important role in H2O2-mediated cell signaling. We previously found that the expression level of Prdx1 was elevated in esophagus squamous cell carcinoma (ESCC) tissue using a proteomics approach. Since overexpressed protein can induce an autoimmune response, to further examine whether serum from ESCC patients exhibits immunoreactivity against Prdx1, autoantibody responses to Prdx1 were evaluated by ELISA, western blotting and indirect immunofluorescence assay in sera from patients with ESCC and normal individuals. Immunohistochemical study with tissue array slides and western blot analysis with cancer cell lines were also performed to analyze the protein expression profiles of Prdx1 in ESCC tissues and cancer cell lines. The results demonstrated that the positive rate of autoantibody against Prdx1 in ESCC sera was 13.2% (9/68), whereas this rate was 0% (0/89) in normal individuals. Data also showed that expression of Prdx1 was significantly increased in ESCC tissues when compared to expression in paired adjacent normal tissues (P<0.05). The data indicate that Prdx1 may contribute to malignant transformation of the esophagus, and may be used as a biomarker in the immunodiagnosis of ESCC.

journal_name

Oncol Rep

journal_title

Oncology reports

authors

Ren P,Ye H,Dai L,Liu M,Liu X,Chai Y,Shao Q,Li Y,Lei N,Peng B,Yao W,Zhang J

doi

10.3892/or.2013.2714

subject

Has Abstract

pub_date

2013-11-01 00:00:00

pages

2297-303

issue

5

eissn

1021-335X

issn

1791-2431

journal_volume

30

pub_type

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