Medical Oncology

, Volume 29, Issue 3, pp 1810–1816 | Cite as

Long non-coding RNA MALAT-1 overexpression predicts tumor recurrence of hepatocellular carcinoma after liver transplantation

  • Ming-chun Lai
  • Zhe Yang
  • Lin Zhou
  • Qian-qian Zhu
  • Hai-yang Xie
  • Feng Zhang
  • Li-ming Wu
  • Lei-ming Chen
  • Shu-sen ZhengEmail author
Original Paper


Metastasis-associated lung adenocarcinoma transcript 1(MALAT1), a long non-coding RNA (lncRNA), is up-regulated in many solid tumors and associated with cancer metastasis and recurrence. However, its role in hepatocellular carcinoma (HCC) remains poorly understood. In the present study, we evaluated the expression of MALAT1 by quantitative real-time PCR in 9 liver cancer cell lines and 112 HCC cases including 60 cases who received liver transplantation (LT) with complete follow-up data. Moreover, small interfering RNA (siRNA) was used to inhibit MALAT1 expression to investigate its biological role in tumor progression. We found that MALAT1 was up-regulated in both cell lines and clinical tissue samples. Patients with high expression level of MALAT1 had a significantly increased risk of tumor recurrence after LT, particularly in patients who exceeded the Milan criteria. On multivariate analysis, MALAT1 was an independent prognostic factor for predicting HCC recurrence (hazard ratio, 3.280, P = 0.003).In addition, inhibition of MALAT1 in HepG2 cells could effectively reduce cell viability, motility, invasiveness, and increase the sensitivity to apoptosis. Our data suggest that lncRNA MALAT1 play an important role in tumor progression and could be a novel biomarker for predicting tumor recurrence after LT and serve as a promising therapeutic target.


MALAT1 Hepatocellular carcinoma Recurrence Transplantation Liver transplantation 



This study was supported by the Major State Basic Research Development Program (NO.2009CB522407), the Major National S&T Program (NO. 2008ZX10002-026), and the Program for Innovative Research Team of Zhejiang Province of China (NO. 2009R50038) The authors would like to thank the surgeons and nurses for their valuable technical assistance and facilitating the collection of patient information.

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Ming-chun Lai
    • 1
  • Zhe Yang
    • 1
  • Lin Zhou
    • 1
  • Qian-qian Zhu
    • 1
  • Hai-yang Xie
    • 1
  • Feng Zhang
    • 1
  • Li-ming Wu
    • 1
  • Lei-ming Chen
    • 1
  • Shu-sen Zheng
    • 1
    Email author
  1. 1.Department of Hepatobiliary and Pancreatic Surgery, Key Lab of Combined Multi-organ Transplantation, Ministry of Public Health, the First Affiliated HospitalZhejiang University School of MedicineHangzhouPeople’s Republic of China

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