Effect of nitric oxide synthase on multiple drug resistance is related to Wnt signaling in non-small cell lung cancer

  • Authors:
    • Yang Li
    • Chengyuan Ma
    • Xu Shi
    • Zhongmei Wen
    • Dan Li
    • Munan Sun
    • Hui Ding
  • View Affiliations

  • Published online on: July 23, 2014     https://doi.org/10.3892/or.2014.3351
  • Pages: 1703-1708
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Multiple drug resistance (MDR) is considered a major challenge in the clinical treatment of non-small cell lung cancer (NSCLC). Both nitric oxide synthase (iNOS) and Wnt signaling pathway participate in the regulation of drug resistance, but the interaction between them remains unclear. In the present study, we detected the activation of Wnt/β-catenin signaling in iNOS-induced drug-resistant lung cancer cells, and compared the effect of canonical and noncanonical Wnt pathway on the level of iNOS. Moreover, we investigated the expression of Wnt/β-catenin signaling downstream factors and its main inhibitors. The results indicated iNOS-induced drug resistance was possibly mediated by glutathione S-transferase-π (GST-π) and topoisomerase IIα (TOPO IIα), but not P-glycoprotein (P-gp), and this process was closely associated with the activation of canonical Wnt/β-catenin signaling, but less with noncanonical pathways. The mechanism of iNOS promoting Wnt/β-catenin pathway was mainly dependent on the inverse regulation of Dickkopf-1 (DKK-1) and secreted frizzled-related protein-1 (SFRP-1). Clarifying the relationship between iNOS and Wnt signaling may provide insight into a better understanding of the mechanism of drug resistance development in NSCLC.
View Figures
View References

Related Articles

Journal Cover

October 2014
Volume 32 Issue 4

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

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Li Y, Ma C, Shi X, Wen Z, Li D, Sun M and Ding H: Effect of nitric oxide synthase on multiple drug resistance is related to Wnt signaling in non-small cell lung cancer. Oncol Rep 32: 1703-1708, 2014
APA
Li, Y., Ma, C., Shi, X., Wen, Z., Li, D., Sun, M., & Ding, H. (2014). Effect of nitric oxide synthase on multiple drug resistance is related to Wnt signaling in non-small cell lung cancer. Oncology Reports, 32, 1703-1708. https://doi.org/10.3892/or.2014.3351
MLA
Li, Y., Ma, C., Shi, X., Wen, Z., Li, D., Sun, M., Ding, H."Effect of nitric oxide synthase on multiple drug resistance is related to Wnt signaling in non-small cell lung cancer". Oncology Reports 32.4 (2014): 1703-1708.
Chicago
Li, Y., Ma, C., Shi, X., Wen, Z., Li, D., Sun, M., Ding, H."Effect of nitric oxide synthase on multiple drug resistance is related to Wnt signaling in non-small cell lung cancer". Oncology Reports 32, no. 4 (2014): 1703-1708. https://doi.org/10.3892/or.2014.3351