Bilirubin Nanoparticles as a Nanomedicine for Anti-inflammation Therapy

Yonghyun Lee, Hyungjun Kim, Sukmo Kang, Jinju Lee, Jinho Park, Sangyong Jon

Research output: Contribution to journalArticlepeer-review

165 Scopus citations


Despite the high potency of bilirubin as an endogenous anti-inflammatory compound, its clinical translation has been hampered because of its insolubility in water. Bilirubin-based nanoparticles that may overcome this critical issue are presented. A polyethylene glycol compound (PEG) was covalently attached to bilirubin, yielding PEGylated bilirubin (PEG-BR). The PEG-BR self-assembled into nanoscale particles with a size of approximately 110 nm, termed bilirubin nanoparticles (BRNPs). BRNPs are highly efficient hydrogen peroxide scavengers, thereby protecting cells from H2O2-induced cytotoxicity. In a murine model of ulcerative colitis, intravenous injection of BRNPs showed preferential accumulation of nanoparticles at the sites of inflammation and significantly inhibited the progression of acute inflammation in the colon. Taken together, BRNPs show potential for use as a therapeutic nanomedicine in various inflammatory diseases.

Original languageEnglish
Pages (from-to)7460-7463
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number26
StatePublished - 20 Jun 2016

Bibliographical note

Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim


  • bilirubin
  • inflammation therapy
  • nanomedicine
  • nanoparticles
  • self-assembled nanostructures


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