Nerve growth factor receptor increases the tumor growth and metastatic potential of triple-negative breast cancer cells

Oncogene. 2021 Mar;40(12):2165-2181. doi: 10.1038/s41388-021-01691-y. Epub 2021 Feb 24.

Abstract

Cellular heterogeneity and the lack of metastatic biomarkers limit the diagnosis of and development of therapies for metastatic triple-negative breast cancer (TNBC). Thus, development of new clinically relevant markers is urgently needed. By using RNA-seq analysis, we found that nerve growth factor receptor (NGFR) was highly expressed in metastatic lung clones of MDA-MB-231 cells. This high level of NGFR expression was necessary for TNBC cells to grow into tumor spheres under nonadhesive conditions, resist anoikis, promote primary tumor growth and increase metastasis in mice. NGFR was also expressed at a high level in a greater number of TNBC patients (45%) than non-TNBC patients (23%), enriched in higher grade tumors, and negatively correlated with the overall survival of TNBC patients. Mechanistic analysis indicated that NGFR exerted its prometastatic effects by binding with neurotrophic receptor tyrosine kinase 3 (TrkC) mainly through a ligand-independent manner, which activated the MEK-ERK1-ZEB1 and PI3K-AKT signaling pathways, increased the level of fibronectin, and decreased the expression of PUMA. Notably, we observed that NGFR expression in TrkC-positive metastatic clones reduced cellular sensitivity to anti-Trk therapy. Moreover, WNT family member 5a (WNT5A) and TrkC activated NGFR transcription in a ZEB1-dependent manner. Taken together, this study identified NGFR as a novel driver for transforming TNBC into higher grade metastatic tumors. Our findings provide the basis for the future development of NGFR as a diagnostic and prognostic marker for determining the metastatic potential of TNBC and as a therapeutic target for treating TNBC patients.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cell Proliferation / genetics
  • Clonal Evolution / genetics
  • Gene Expression Regulation, Neoplastic / genetics
  • Humans
  • Lung Neoplasms / genetics*
  • Lung Neoplasms / pathology
  • Lung Neoplasms / secondary
  • Mice
  • Mitogen-Activated Protein Kinase 3 / genetics
  • Mitogen-Activated Protein Kinase Kinases / genetics
  • Neoplasm Metastasis
  • Nerve Tissue Proteins / genetics*
  • Phosphatidylinositol 3-Kinases
  • Proto-Oncogene Proteins c-akt / genetics
  • RNA-Seq
  • Receptor, trkC / genetics*
  • Receptors, Nerve Growth Factor / genetics*
  • Signal Transduction
  • Triple Negative Breast Neoplasms / genetics*
  • Triple Negative Breast Neoplasms / pathology
  • Wnt-5a Protein / genetics*
  • Zinc Finger E-box-Binding Homeobox 1 / genetics*

Substances

  • NGFR protein, human
  • NTRK3 protein, human
  • Nerve Tissue Proteins
  • Receptors, Nerve Growth Factor
  • WNT5A protein, human
  • Wnt-5a Protein
  • ZEB1 protein, human
  • Zinc Finger E-box-Binding Homeobox 1
  • Receptor, trkC
  • Proto-Oncogene Proteins c-akt
  • MAPK3 protein, human
  • Mitogen-Activated Protein Kinase 3
  • Mitogen-Activated Protein Kinase Kinases