Microfluidic Synthesis of pH-Sensitive Multicompartmental Microparticles for Multimodulated Drug Release

Hyeon Ung Kim, Dae Gun Choi, Yoon Ho Roh, Min Suk Shim, Ki Wan Bong

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


Stimuli-responsive carriers releasing multiple drugs have been researched for synergistic combinatorial cancer treatment with reduced side-effects. However, previously used drug carriers have limitations in encapsulating multiple drug components in a single carrier and releasing each drug independently. In this work, pH-sensitive, multimodulated, anisotropic drug carrier particles are synthesized using an acid-cleavable polymer and stop-flow lithography. The particles exhibit a faster drug release rate at the acidic pH of tumors than at physiological pH, demonstrating their potential for tumor-selective drug release. The drug release rate of the particles can be adjusted by controlling the monomer composition. To accomplish multimodulated drug release, multicompartmental particles are synthesized. The drug release profile of each compartment is programmed by tailoring the monomer composition. These pH-sensitive, multicompartmental particles are promising drug carriers enabling tumor-selective and multimodulated release of multiple drugs for synergistic combination cancer therapy.

Original languageEnglish
Pages (from-to)3463-3470
Number of pages8
JournalSmall (Weinheim an der Bergstrasse, Germany)
Issue number25
Publication statusPublished - 2016 Jul 1


  • flow lithography
  • ketal linkage-bearing monomer
  • microparticles
  • multimodulated drug release
  • pH-sensitive drug release

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)


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