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Updated: Jun 21, 2026

The Use of Reverse Phase Protein Arrays (RPPA) to Explore Protein Expression Variation within Individual Renal Cell Cancers
Published on: January 22, 2013
[Screening and identification analysis of serum protein biomarkers in nephroblastoma]
Jia-Xiang Wang1, Shao-Bo Yang, Qiu-Liang Liu
1Department of Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China. wjiaxiang@zzu.edu.cn
Objective:
To screen and characterize the serum protein biomarkers in nephroblastoma so as to establish the proteins as the specific serum biomarkers for diagnosis and prognosis monitoring.
Methods:
The differential protein peaks were located by detecting serum samples of preoperative and postoperative patients and normal children using the SELDI-TOF MS technology. After purification, the differential proteins were further analyzed by LC-MS/MS and the protein sequences searched in database.
Results:
Two peaks with m/z of 6455.5 and 6984.4 were selected as potential biomarkers. They were weakly expressed in nephroblastoma (intensity: 1029 +/- 364, 297 +/- 126) but highly expressed in normal individuals (2108 +/- 837, 753 +/- 226); another peak with m/z of 9190.8 was weakly expressed in preoperative sera (283 +/- 154) but highly expressed in serum samples of postoperative patients and normal children (5974 +/- 657, 6231 +/- 519). The protein at 6455.5 and 9190.8 were identified as apolipoprotein C-III and haptoglobin respectively.
Conclusion:
The detection of differentially expressed apolipoprotein C-III and haptoglobin may have potential utilities for serum diagnosis, malignancy classification and prognosis monitoring of nephroblastoma and is worthy of further studies and applications.
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