Enhancing oral delivery of plant-derived vesicles for colitis

J Control Release. 2023 May:357:472-483. doi: 10.1016/j.jconrel.2023.03.056. Epub 2023 Apr 20.

Abstract

Plant-derived vesicles (PDVs) are attractive for therapeutic applications, including as potential nanocarriers. However, a concern with oral delivery of PDVs is whether they would remain intact in the gastrointestinal tract. We found that 82% of cabbage PDVs were destroyed under conditions mimicking the upper digestive tract. To overcome this limitation, we developed a delivery method whereby lyophilized Eudragit S100-coated cabbage PDVs were packaged into a capsule (Cap-cPDVs). Lyophilization and suspension of PDVs did not have an appreciable impact on PDV structure, number, or therapeutic effect. Additionally, packaging the lyophilized Eudragit S100-coated PDVs into capsules allowed them to pass through the upper gastrointestinal tract for delivery into the colon better than did suspension of PDVs in phosphate-buffered saline. Cap-cPDVs showed robust therapeutic effect in a dextran sulfate sodium-induced colitis mouse model. These findings could have broad implications for the use of PDVs as orally delivered nanocarriers of natural therapeutic plant compounds or other therapeutics.

Keywords: Eudragit S100 coat; Gastrointestinal tract; Lyophilization; Oral delivery; Plant-derived vesicles; Vesicle stability.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Administration, Oral
  • Animals
  • Colitis* / chemically induced
  • Colitis* / drug therapy
  • Drug Delivery Systems
  • Hydrogen-Ion Concentration
  • Mice
  • Polymethacrylic Acids / chemistry

Substances

  • methylmethacrylate-methacrylic acid copolymer
  • Polymethacrylic Acids