Different hydration states and passive tumor targeting ability of polyethylene glycol-modified dendrimers with high and low PEG density

Ayako Tsujimoto, Hiroki Uehara, Haruna Yoshida, Misaki Nishio, Kousuke Furuta, Takashi Inui, Akikazu Matsumoto, Shigeaki Morita, Masaru Tanaka, Chie Kojima

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)

抄録

It has been reported that the amount of intermediate water, defined as water molecules loosely bound to a material, is a useful index of the material's bio-inert properties. Polyethylene glycol (PEG) is a well-known biocompatible polymer with a large amount of intermediate water. Many researchers have showed that PEGylated nanoparticles are passively accumulated in tumor tissues owing to their enhanced permeability and retention (EPR) effects. Dendrimers are regularly branched polymers with highly controllable size and structure, which can be exploited as potent drug carriers. In this study, we investigated the tripartite relationship among the PEG density, the hydration state, and the passive tumor targeting property, using PEGylated dendrimers. The fully PEGylated dendrimer, PEG64-den, showed similar hydration behavior to PEG and a passive tumor targeting property. In contrast, the hydration state of the partly PEGylated dendrimer, PEG5-den, was different from that of PEG64-den, and the passive tumor targeting property was not observed. This is the first report to show the hydration state of a drug carrier as well as discuss a relationship between the hydration state and biodistribution.

本文言語英語
論文番号112159
ジャーナルMaterials Science and Engineering C
126
DOI
出版ステータス出版済み - 7 2021

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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