Anchored protease-activatable polymersomes for molecular diagnostics of metastatic cancer cells

Hyun Ouk Kim, Jong Woo Lim, Jihye Choi, Hwunjae Lee, Hye Young Son, Jihye Kim, Geunseon Park, Haejin Chun, Daesub Song, Yong Min Huh, Seungjoo Haam

Research output: Contribution to journalArticle

9 Citations (Scopus)


Real-time quantitative and qualitative analyses of metastasis-associated proteases are critical for precise diagnosis and novel therapeutic treatment of advanced cancers. However, conventional methods based on DNA, peptides, and proteins require sophisticated chemistry and additional processes to expose detection moieties, and they lack elements of temporal control, which limit their applicability. We designed unique protease-activatable polymersomes (PeptiSomes) for high sensitivity, in situ quantitative analysis of activating membrane-type 1 matrix metalloproteinases (MT1-MMP, MMP14). To do this, we first synthesized an amphiphilic block polymer-peptide and a copolypeptide based on mPEG-b-pLeu and MT1-peptide-b-pLeu, respectively. Amphiphilic self-assembled PeptiSomes in water were capable of disassembling and releasing the encapsulated self-quenched fluorescence dye (calcein) via enzymatic activation by MT1-MMP. Our PeptiSome system may potentially prevent the initiation and progression of cancer metastasis. Furthermore, the PeptiSome approach described here is likely to facilitate the development of rapid protease assay techniques and further extend the role of proteases as metastasis indicators and therapeutic targets.

Original languageEnglish
Pages (from-to)9571-9578
Number of pages8
JournalJournal of Materials Chemistry B
Issue number48
Publication statusPublished - 2017

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)

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