Design of environment-sensitive supramolecular assemblies for intracellular drug delivery: Polymeric micelles that are responsive to intracellular pH change

Younsoo Bae, Shigeto Fukushima, Atsushi Harada, Kazunori Kataoka

Research output: Contribution to journalArticlepeer-review

1167 Scopus citations

Abstract

Drug smuggling: Micelles made up of block copolymers and the anticancer drug adriamycin (ADR), which is linked to the polymer by a pH-sensitive linker, have been prepared (see picture). Treatment of cancer cells with the micelles shows that the micelles are transported into the cell by endocytosis, thus bypassing the cell-membrane transporters. In the cell, the decrease in pH value triggers the release of the ADR, which retains its cytotoxic effect. The released ADR fluoresces which allows its localization within the cells to be detected.

Original languageEnglish
Pages (from-to)4640-4643
Number of pages4
JournalAngewandte Chemie International Edition in English
Volume42
Issue number38
DOIs
StatePublished - Oct 6 2003

Keywords

  • Anticancer agents
  • Micelles
  • Polymers
  • Self-assembly
  • Supramolecular chemistry

ASJC Scopus subject areas

  • Catalysis
  • Chemistry (all)

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