EGF conjugation improves safety and uptake effcacy of titanium dioxide nanoparticles

Basma Salama, Chia Jung Chang, Koki Kanehira, El Said El-Sherbini, Gehad El-Sayed, Mohamed El-Adl, Akiyoshi Taniguchi

Research output: Contribution to journalArticlepeer-review

Abstract

Titanium dioxide nanoparticles (TiO2 NPs) have a strong potential for cancer therapeutic and bioimaging applications such as photodynamic therapy (PDT) and photodynamic diagnosis (PDD). Our previous results have shown that TiO2 NPs have a low cellular uptake and can induce cell proliferation. This suggests that TiO2 NPs could increase the risk of tumor overgrowth while being used for PDD and PDT. To solve this problem, we constructed epidermal growth factor-ligated polyethylene glycol-coated TiO2 NPs (EGF-TiO2 PEG NPs). In this work, we studied the effect of EGF conjugation on the cellular uptake of TiO2 PEG NPs. Then, we investigated the effect of both non-conjugated and EGF-TiO2 PEG NPs on the A431 epidermal cancer cell line, proliferation and growth via the investigation of EGFR localization and expression. Our results indicated that TiO2 PEG NPs induced EGFRs aggregation on the A431 cells surface and induced cell proliferation. In addition, EGF-TiO2 PEG NPs induced the internalization of EGFRs inside of cells with increased cellular NPs uptake and decreased cellular proliferation compared to TiO2 PEG NPs-treated cells. These findings suggest that EGF conjugation can increase the effcacy of TiO2 PEG NPs for biomedical applications such as PDD and PDT with decreased risk of tumor overgrowth.

Original languageEnglish
Article number4467
JournalMolecules
Volume25
Issue number19
DOIs
Publication statusPublished - 2020 Oct

Keywords

  • Cell proliferation
  • Cellular uptake
  • EGF
  • EGFR
  • Titanium dioxide nanoparticles

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemistry (miscellaneous)
  • Molecular Medicine
  • Pharmaceutical Science
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry

Fingerprint Dive into the research topics of 'EGF conjugation improves safety and uptake effcacy of titanium dioxide nanoparticles'. Together they form a unique fingerprint.

Cite this