Argininosuccinate lyase is a potential therapeutic target in breast cancer

  • Authors:
    • Hau-Lun Huang
    • Wei-Ching Chen
    • Hui-Ping Hsu
    • Chien-Yu Cho
    • Yu‑Hsuan Hung
    • Chih-Yang Wang
    • Ming-Derg Lai
  • View Affiliations

  • Published online on: September 16, 2015     https://doi.org/10.3892/or.2015.4280
  • Pages: 3131-3139
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Abstract

Arginine is a non-essential amino acid that modulates nitric oxide production and cancer homeostasis. In our previous study, we observed that blocking argininosuccinate lyase (ASL) attenuates tumor progression in liver cancer. However, the role of ASL in human breast cancer has been studied to a lesser degree. In the present study, we investigated the effect of targeting ASL in breast cancer. We found that ASL was induced by ER stress and was significantly upregulated in breast cancer tissues compared to that in the corresponding normal tissues. Downregulation of ASL inhibited the growth of breast cancer in vitro and in vivo. The level of cell cycle-related gene, cyclin A2, was reduced and was accompanied by a delay in G2/M transition. ASL shRNA-induced cell inhibition was rescued by exogenous cyclin A2. Furthermore, autophagy was observed in the cells expressing ASL shRNA, and inhibition of autophagy reduced cell growth, indicating that autophagy played a cell survival role in the ASL knockdown cells. Moreover, inhibition of ASL reduced NO content. Introduction of the NO donor partially restored the growth inhibition by ASL shRNA. Thus, the mechanism induced by ASL shRNA which occurred in human breast cancer may be attributed to a decrease in cyclin A2 and NO.
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December-2015
Volume 34 Issue 6

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Huang H, Chen W, Hsu H, Cho C, Hung YH, Wang C and Lai M: Argininosuccinate lyase is a potential therapeutic target in breast cancer. Oncol Rep 34: 3131-3139, 2015
APA
Huang, H., Chen, W., Hsu, H., Cho, C., Hung, Y., Wang, C., & Lai, M. (2015). Argininosuccinate lyase is a potential therapeutic target in breast cancer. Oncology Reports, 34, 3131-3139. https://doi.org/10.3892/or.2015.4280
MLA
Huang, H., Chen, W., Hsu, H., Cho, C., Hung, Y., Wang, C., Lai, M."Argininosuccinate lyase is a potential therapeutic target in breast cancer". Oncology Reports 34.6 (2015): 3131-3139.
Chicago
Huang, H., Chen, W., Hsu, H., Cho, C., Hung, Y., Wang, C., Lai, M."Argininosuccinate lyase is a potential therapeutic target in breast cancer". Oncology Reports 34, no. 6 (2015): 3131-3139. https://doi.org/10.3892/or.2015.4280