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Expression of LATS1 contributes to good prognosis and can negatively regulate YAP oncoprotein in non-small-cell lung cancer

Tumor Biology volume 35, pages 6435–6443 (2014)Cite this article

Abstract

Large tumor suppressor (LATS) is a Ser/Thr kinase originally isolated from Drosophila. Recent studies demonstrate that LATS is an important member of the Hippo pathway which can regulate organ size and cell proliferation. However, little is known about the expression and clinical significance of LATS in lung cancer. In this study, we aimed to assess the clinical significance and biological functions of LATS1 in non-small-cell lung cancer (NSCLC). We investigated the expression of LATS1 in 136 cases of NSCLC tissue and 30 cases of normal lung tissue by immunohistochemical staining. The results confirmed that LATS1 expression was higher in normal lung tissues, but significantly lower in NSCLC tissues. Moreover, the expression of LATS1 in NSCLC was significantly correlated with p-TNM stage (p = 0.038) and lymph node metastasis (p = 0.014). Importantly, the loss of LATS1 expression was associated with short overall survival. Further study in NSCLC cell lines in which LATS1 was either overexpressed or depleted confirmed that LATS1 markedly inhibited cell proliferation and invasion and could regulate the nuclear location of yes-associated protein (YAP). These results indicate that LATS1 may play an important role in NSCLC, and may serve as a novel therapeutic target of NSCLC.

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Acknowledgments

This study is supported by the National Natural Science Foundation of China, grant 30670917.

Conflicts of interest

The authors declare that they have no competing financial interests.

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Affiliations

  1. Department of Pathology, the First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, 110001, China

    Xu-Yong Lin, Xiu-Peng Zhang, Jun-Hua Wu, Xue-Shan Qiu & En-Hua Wang

  2. Institute of Pathology and Pathophysiology, China Medical University, Shenyang, 110001, China

    Xu-Yong Lin, Xiu-Peng Zhang, Jun-Hua Wu, Xue-Shan Qiu & En-Hua Wang

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  1. Xu-Yong Lin
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  2. Xiu-Peng Zhang
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  3. Jun-Hua Wu
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Correspondence to En-Hua Wang.

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Lin, XY., Zhang, XP., Wu, JH. et al. Expression of LATS1 contributes to good prognosis and can negatively regulate YAP oncoprotein in non-small-cell lung cancer. Tumor Biol. 35, 6435–6443 (2014). https://doi.org/10.1007/s13277-014-1826-z

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  • DOI: https://doi.org/10.1007/s13277-014-1826-z

Keywords

  • Large tumor suppressor
  • Yes-associated protein
  • Hippo signaling pathway
  • Non-small-cell lung cancer