Open Access

LASS2 inhibits growth and invasion of bladder cancer by regulating ATPase activity

  • Authors:
    • Haifeng Wang
    • Yigang Zuo
    • Mingxia Ding
    • Changxing Ke
    • Ruping Yan
    • Hui Zhan
    • Jingyu Liu
    • Wei Wang
    • Ning Li
    • Jiansong Wang
  • View Affiliations

  • Published online on: December 20, 2016     https://doi.org/10.3892/ol.2016.5514
  • Pages:661-668
  • Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Homo sapiens longevity assurance homolog 2 of yeast LAG1 (LASS2) is a novel suppressor of human cancer metastasis, and downregulation of LASS2 has been associated with a poor prognosis in patients with bladder cancer (BC). However, the molecular mechanism underlying LASS2‑mediated inhibition of tumor invasion and metastasis in BC remains unclear. LASS2 has been reported to directly bind to subunit C of vacuolar H+‑ATPase (V‑ATPase) in various types of cancer, suggesting that LASS2 may inhibit cancer invasion and metastasis by regulating the function of V‑ATPase. The present study investigated the effect of LASS2‑specific small interfering (si)RNA on the invasion and metastasis of the RT4 human BC cell line, which has a low metastatic potential, and its functional interaction with V‑ATPase. Silencing of LASS2 in RT4 cells was able to increase V‑ATPase activity, the extracellular hydrogen ion concentration and, in turn, the activation of secreted matrix metalloproteinase (MMP)‑2 and MMP‑9, which occurred simultaneously with enhanced cell proliferation, cell survival and cell invasion in vitro, as well as acceleration of BC growth in vivo. In this process, it was found that siRNA‑LASS2 treatment was able to suppress cell apoptosis induced by doxorubicin. These findings suggest that silencing of LASS2 may enhance the growth, invasion and metastasis of BC by regulating ATPase activity.

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February 2017
Volume 13 Issue 2

Print ISSN: 1792-1074
Online ISSN:1792-1082

2015 Impact Factor: 1.482
Ranked #97/211 Oncology
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APA
Wang, H., Zuo, Y., Ding, M., Ke, C., Yan, R., Zhan, H. ... Wang, J. (2017). LASS2 inhibits growth and invasion of bladder cancer by regulating ATPase activity. Oncology Letters, 13, 661-668. https://doi.org/10.3892/ol.2016.5514
MLA
Wang, H., Zuo, Y., Ding, M., Ke, C., Yan, R., Zhan, H., Liu, J., Wang, W., Li, N., Wang, J."LASS2 inhibits growth and invasion of bladder cancer by regulating ATPase activity". Oncology Letters 13.2 (2017): 661-668.
Chicago
Wang, H., Zuo, Y., Ding, M., Ke, C., Yan, R., Zhan, H., Liu, J., Wang, W., Li, N., Wang, J."LASS2 inhibits growth and invasion of bladder cancer by regulating ATPase activity". Oncology Letters 13, no. 2 (2017): 661-668. https://doi.org/10.3892/ol.2016.5514