Prorenin receptor acts as a potential molecular target for pancreatic ductal adenocarcinoma diagnosis

Arivajiagane Arundhathi, Wen Han Chuang, Jen Kun Chen, Shin E. Wang, Yi Ming Shyr, Jiun Yu Chen, Wei Neng Liao, Hsin Wei Chen, Yi Min Teng, Chiao Chih Pai, Chih-Hong Wang*

*Corresponding author for this work

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Recent studies have implicated the prorenin receptor (PRR) is associated with pancreatic tumorigenesis. We therefore investigated the role of PRR in pancreatic tumorigenesis and assessed whether PRR can serve as a target for imaging diagnosis at early stages of PDAC. Here we show that aberrant expression of PRR in premalignant PanIN lesions, and human PDAC samples, and PDAC cell lines, particularly in Panc-1 cells. Interestingly, PRR expression was positively associated with PDAC progression. Moreover, overexpression of human PRR resulted in increased cell proliferation and decreased apoptosis, while knockdown of human PRR caused decreased cell proliferation and enhanced apoptosis in pancreatic cancer cells. We also observed that overexpression of human PRR enhanced MAPK and PI3K/Akt signaling pathways in PDAC cells, while knockdown of human PRR suppressed both of pathways. The confocal imaging analysis showed that human PRR was highly expressed in Panc-1, ASPC, and Miapaca cells, whereas BXPC-3, and HPAC cells had a significantly lower fluorescent signals. Consistently, the single-photon emission computed tomography (SPET/CT) showed that the uptake of anti-PRR labelled with 125I was higher in Panc- 1 and ASPC tumors-bearing mice after 96 hours injection. Importantly, tumors in pancreas of Pdx1-cre; LSL-KrasG12D mice had a significant increased PRR expression and accumulation of radioactivity at 96 h after injection. These data suggest that 125I-anti-PRR can detect the orthotopic tumors in Pdx1-cre; LSL-KrasG12D mice. Therefore, anti-PRR labelled with 125I is a promising radiotracer for imaging diagnosis at early stages of pancreatic cancer.

Original languageEnglish
Pages (from-to)55437-55448
Number of pages12
JournalOncotarget
Volume7
Issue number34
DOIs
StatePublished - 1 Jan 2016

Keywords

  • Kras
  • Pancreatic cancer
  • PanIN lesions
  • Prorenin receptor
  • SPECT/CT

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    Arundhathi, A., Chuang, W. H., Chen, J. K., Wang, S. E., Shyr, Y. M., Chen, J. Y., Liao, W. N., Chen, H. W., Teng, Y. M., Pai, C. C., & Wang, C-H. (2016). Prorenin receptor acts as a potential molecular target for pancreatic ductal adenocarcinoma diagnosis. Oncotarget, 7(34), 55437-55448. https://doi.org/10.18632/oncotarget.10583