Polymer Testing (Sep 2022)

Targeted inhibition of HER-2 positive breast cancer cells by trastuzumab functionalized pullulan-doxorubicin nanoparticles

  • Ruiling Xu,
  • Junhui Sui,
  • Mingda Zhao,
  • Yuedi Yang,
  • Lei Tong,
  • Yongmei Liu,
  • Yong Sun,
  • Yujiang Fan,
  • Jie Liang,
  • Xingdong Zhang

Journal volume & issue
Vol. 113
p. 107669

Abstract

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Human epidermal growth factor receptor-2 (HER-2) positive breast cancer is highly invasive with poor clinical outcomes and high risk of recurrence. Here, trastuzumab functionalized pullulan-doxorubicin nanoparticles (Tz-P-Dox) were developed and characterized as a new anticancer formulation for active targeting HER-2 overexpression of breast cancer cells. The obtained nanoparticles had the hydrodynamic diameter of 66.7 ± 2.0 nm and PDI of 0.218 ± 0.012. And the in vitro results showed significant difference of cell uptake and cytotoxic effect between Tz-P-Dox and non-targeted P-Dox against HER-2 positive cell lines (BT474 and MCF-7 cells). However, the differences between Tz-P-Dox and P-Dox were not observed in HER-2 negative cell lines (MDA-MB-231 cells). These results suggested that trastuzumab functionalized nanoparticles had great potential to be considered as a candidate drug for HER-2 positive breast cancer treatment.

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