Pharmaceutics (Mar 2024)

Intracellular Delivery of Therapeutic Protein via Ultrathin Layered Double Hydroxide Nanosheets

  • He Zhang,
  • Anle Ge,
  • Yulin Wang,
  • Boran Xia,
  • Xichu Wang,
  • Zhonghui Zheng,
  • Changsheng Wei,
  • Bo Ma,
  • Lin Zhu,
  • Rose Amal,
  • Sung Lai Jimmy Yun,
  • Zi Gu

DOI
https://doi.org/10.3390/pharmaceutics16030422
Journal volume & issue
Vol. 16, no. 3
p. 422

Abstract

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The therapeutic application of biofunctional proteins relies on their intracellular delivery, which is hindered by poor cellular uptake and transport from endosomes to cytoplasm. Herein, we constructed a two-dimensional (2D) ultrathin layered double hydroxide (LDH) nanosheet for the intracellular delivery of a cell-impermeable protein, gelonin, towards efficient and specific cancer treatment. The LDH nanosheet was synthesized via a facile method without using exfoliation agents and showed a high loading capacity of proteins (up to 182%). Using 2D and 3D 4T1 breast cancer cell models, LDH–gelonin demonstrated significantly higher cellular uptake efficiency, favorable endosome escape ability, and deep tumor penetration performance, leading to a higher anticancer efficiency, in comparison to free gelonin. This work provides a promising strategy and a generalized nanoplatform to efficiently deliver biofunctional proteins to unlock their therapeutic potential for cancer treatment.

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