JAG1 Is Associated with Poor Survival through Inducing Metastasis in Lung Cancer

PLoS One. 2016 Mar 1;11(3):e0150355. doi: 10.1371/journal.pone.0150355. eCollection 2016.

Abstract

JAG1 is a Notch ligand that plays a critical role in multiple signaling pathways. However, the functionality of JAG1 in non-small cell lung cancer (NSCLC) has not been investigated thoroughly. By comparison of gene transcripted RNA profiles in the cell line pair with differential invasion ability, we identified JAG1 as a potential metastasis enhancer in lung cancer. Ectopic expression of JAG1 on lung cancer cells enhanced cell migration and invasion as well as metastasis in vitro and in vivo. Conversely, knockdown of JAG1 with siRNA in highly invasive cancer cells led to the reduction of migration and invasion. In clinical analysis, JAG1 mRNA expression was higher in tumors than in adjacent normal tissues in 14 of 20 patients with squamous cell carcinoma (SCC). SCC patients with higher JAG1 transcription had poor overall survival than those with low-transcripted JAG1. Microarray analysis indicated that the enforced JAG1 transcription was associated with an elevated HSPA2 RNA transcription, which played a role in promoting cancer cell migration and invasion. In conclusion, this is the first study that demonstrated that JAG1 might act as a potential prognostic marker and JAG1/HSPA2 axis mediates lung cancer malignancy at least partly.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Biomarkers, Tumor / genetics
  • Calcium-Binding Proteins / genetics*
  • Carcinoma, Non-Small-Cell Lung / genetics
  • Carcinoma, Non-Small-Cell Lung / pathology
  • Carcinoma, Squamous Cell / genetics
  • Carcinoma, Squamous Cell / pathology
  • Cell Line, Tumor
  • Cell Movement / genetics
  • HSP70 Heat-Shock Proteins / genetics
  • Humans
  • Intercellular Signaling Peptides and Proteins / genetics*
  • Jagged-1 Protein
  • Lung Neoplasms / genetics*
  • Lung Neoplasms / pathology*
  • Membrane Proteins / genetics*
  • Mice
  • Mice, SCID
  • Neoplasm Invasiveness / genetics
  • Neoplasm Invasiveness / pathology
  • Neoplasm Metastasis / genetics*
  • Neoplasm Metastasis / pathology
  • Prognosis
  • Serrate-Jagged Proteins

Substances

  • Biomarkers, Tumor
  • Calcium-Binding Proteins
  • HSP70 Heat-Shock Proteins
  • HSPA2 protein, human
  • Intercellular Signaling Peptides and Proteins
  • JAG1 protein, human
  • Jag1 protein, mouse
  • Jagged-1 Protein
  • Membrane Proteins
  • Serrate-Jagged Proteins

Grants and funding

This study was supported by the grants from the Ministry of Science and Technology, Taiwan, R.O.C. (NSC98-2314-B-002-038-MY2, NSC101-2911-I-002-303, 103-2320-B-002 -052, 104-2320-B-002 -030). The funder had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.