Dual functionalized brain-targeting nanoinhibitors restrain temozolomide-resistant glioma via attenuating EGFR and MET signaling pathways

Nat Commun. 2020 Jan 30;11(1):594. doi: 10.1038/s41467-019-14036-x.

Abstract

Activation of receptor tyrosine kinase (RTK) protein is frequently observed in malignant progression of gliomas. In this study, the crosstalk activation of epidermal growth factor receptor (EGFR) and mesenchymal-epithelial transition factor (MET) signaling pathways is demonstrated to contribute to temozolomide (TMZ) resistance, resulting in an unfavorable prognosis for patients with glioblastoma. To simultaneously mitigate EGFR and MET activation, a dual functionalized brain-targeting nanoinhibitor, BIP-MPC-NP, is developed by conjugating Inherbin3 and cMBP on the surface of NHS-PEG8-Mal modified MPC-nanoparticles. In the presence of BIP-MPC-NP, DNA damage repair is attenuated and TMZ sensitivity is enhanced via the down-regulation of E2F1 mediated by TTP in TMZ resistant glioma. In vivo magnetic resonance imaging (MRI) shows a significant repression in tumor growth and a prolonged survival of mice after injection of the BIP-MPC-NP and TMZ. These results demonstrate the promise of this nanoinhibitor as a feasible strategy overcoming TMZ resistance in glioma.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Binding Sites
  • Brain / pathology*
  • Cell Line, Tumor
  • Cell Membrane Permeability / drug effects
  • DNA Damage
  • DNA Repair / drug effects
  • Drug Resistance, Neoplasm* / drug effects
  • E2F1 Transcription Factor / metabolism
  • ErbB Receptors / metabolism*
  • Glioma / drug therapy*
  • Mice, Inbred BALB C
  • Mice, Nude
  • Nanoparticles / chemistry*
  • Nanoparticles / ultrastructure
  • Phosphorylation / drug effects
  • Proto-Oncogene Proteins c-met / metabolism*
  • Signal Transduction* / drug effects
  • Temozolomide / pharmacology
  • Temozolomide / therapeutic use*

Substances

  • E2F1 Transcription Factor
  • E2F1 protein, human
  • ErbB Receptors
  • Proto-Oncogene Proteins c-met
  • Temozolomide