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Oncol Lett. 2017 Mar;13(3):1228-1234. doi: 10.3892/ol.2016.5537. Epub 2016 Dec 27.

Downregulation of tumor protein 53-inducible nuclear protein 1 expression in hepatocellular carcinoma correlates with poor prognosis.

Oncology letters

Yan Deng, Ai-Min Li, Xin-Mei Zhao, Zhang-Juan Song, Si-De Liu

Affiliations

  1. Department of Gastroenterology, Southern Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China.
  2. Department of Gastroenterology, Haicang Hospital, Xiamen, Fujian 361000, P.R. China.

PMID: 28454239 PMCID: PMC5403351 DOI: 10.3892/ol.2016.5537

Abstract

The expression of tumor protein 53-inducible nuclear protein 1 (TP53INP1) is upregulated in certain cancers and downregulated in others. However, its expression in hepatocellular carcinoma (HCC) is not clear. The present study aimed to investigate the expression and prognostic value of TP53INP1 and its association with clinicopathological parameters in HCC. TP53INP1 expression in HCC tissue samples was examined via immunohistochemistry, western blotting and reverse transcription-quantitative polymerase chain reaction. Expression was categorized as high or low. The correlations of TP53INP1 expression with clinical characteristics and patients' prognoses were determined. TP53INP1 was frequently decreased in HCC tissues compared with adjacent non-tumorous liver tissues. This decreased expression was significantly associated with American Joint Committee on Cancer stage (P=0.014) and vascular invasion (P=0.024). Kaplan-Meier analysis further revealed that recurrence-free survival (RFS) (P=0.001) and overall survival (OS) (P=0.002) were significantly worse among patients with low TP53INP1 expression than among those with high TP53INP1 expression. In addition, multivariate analyses revealed that TP53INP1 was an independent predictor of OS [hazard ratio (HR)=2.680, 95% confidence interval (CI)=1.087-6.608, P=0.032) and RFS (HR=2.284, 95% CI=1.157-4.511, P=0.017). In conclusion, the expression of TP53INP1 was decreased in HCC, and TP53INP1 downregulation was an independent predictor of poor prognosis in patients with HCC.

Keywords: hepatocellular carcinoma; prognosis; tumor protein 53-induced nuclear protein 1

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