IDH2 is a novel diagnostic and prognostic serum biomarker for non-small-cell lung cancer.

Molecular Oncology
Jiang-Jiang LiYa Cao

Abstract

Lung cancer is the most common leading cause of cancer-related death worldwide. Late diagnosis contributes to a high mortality rate and poor survival of this cancer. In our previous study, we found that IDH2 polymorphism rs11540478 is a risk factor for lung cancer. Here, we examined IDH2 protein expression in culture medium in which two non-small-cell lung cancer (NSCLC) cell lines, H460 and A549, were growing. We found that the IDH2 protein was elevated in the culture supernatant fraction in a time- and cell number-dependent manner. Next, we used ELISA methods to examine IDH2 protein level in serum from patients with NSCLC and healthy controls. We found that IDH2 protein levels in serum could distinguish NSCLC patients from healthy controls with an AUC (area under the curve) of 0.83 (95% confidence interval = 0.79-0.88). The IDH2 level was decreased in serum from NSCLC postsurgical patients compared with the paired presurgical serum. High serum IDH2 levels appear to correlate with poor survival in patients with NSCLC. These results suggest that IDH2 levels in the serum could be a new effective biomarker for the diagnosis and prognosis of NSCLC.

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Citations

Sep 14, 2019·Cancer Cell International·Liwei WangZhiwen Chen
Apr 26, 2020·Cancer Medicine·Erika F RodriguezMing-Tseh Li
Feb 15, 2020·Biochimica Et Biophysica Acta. Molecular Basis of Disease·Laura TorresanoJosé M Cuezva
Nov 9, 2018·Journal of Thoracic Oncology : Official Publication of the International Association for the Study of Lung Cancer·Sara L Sinicropi-YaoDavid P Carbone

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Methods Mentioned

BETA
ELISA

Software Mentioned

SPSS
GraphPad Prism

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