Colonic delivery of celastrol-loaded layer-by-layer liposomes with pectin/trimethylated chitosan coating to enhance its anti-ulcerative colitis effects

Jing Xian, Xuemei Zhong, Huan Gu, Xiao Wang, Jiaxin Li, Jingjing Li, Yihan Wu, Chen Zhang (Corresponding Author), Jinming Zhang (Corresponding Author)

Research output: Journal article publicationJournal articleAcademic researchpeer-review

28 Citations (Scopus)

Abstract

Herein, a flexible oral colon-targeting delivery system, mediated by electrostatic layer-by-layer alternate deposition with pectin-trimethyl chitosan (TMC) onto liposomes-loading celastrol (Cel/PT-LbL Lipo), was fabricated to enhance anti-UC efficacy. Along with layer-by-layer coating, Cel/Lipo exhibited surface charge reversal, a slight increase in particle size, and a sustained drug release profile in a simulative gastrointestinal tract medium. Based on its bilayer coating of polysaccharides, Cel/PT-LbL Lipo alleviated cytotoxicity of celastrol in colon epithelial NCM460 cells. Due to the strong mucoadhesion of TMC with mucin, PT-LbL Lipo benefited colon localization and prolonged retention ability of its payloads. Ultimately, Cel/PT-LbL Lipo significantly mitigated colitis symptoms and accelerated colitis repair in DSS-treated mice by regulating the levels of proinflammatory factors related to the TLR4/MyD88/NF-κB signaling pathway. Collectively, this study demonstrates that the pectin/trimethylated chitosan coating may allow for Cel/PT-LbL Lipo to function as a more beneficial therapeutic strategy for UC treatment.

Original languageEnglish
Article number2005
JournalPharmaceutics
Volume13
Issue number12
DOIs
Publication statusPublished - Dec 2021

Keywords

  • Celastrol
  • Layer-by-layer
  • Liposomes
  • Trimethylated chitosan
  • Ulcerative colitis

ASJC Scopus subject areas

  • Pharmaceutical Science

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