Maleimidyl magnetic nanoplatform for facile molecular MRI

Dan Heo, Eugene Lee, Minhee Ku, Seungyeon Hwang, Bongjune Kim, Yeonji Park, Young Han Lee, Yong Min Huh, Seungjoo Haam, Jae Ho Cheong, Jaemoon Yang, Jin Suck Suh

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


In this study, we developed the maleimidyl magnetic nanoplatform, which enables functional targeting of a biomarker-specific moiety for molecular imaging via MRI. The maleimide group of the maleimidyl magnetic nanoplatform is conjugated with a thiol group without additional crosslinkers and side products. A physicochemical analysis was conducted to verify the effectiveness of the maleimidyl magnetic nanoplatform, and the existence of the maleimidyl group was investigated using the platform. To prepare biomarker-specific MRI probes, a thiolated aptamer and peptide were immobilized onto the maleimidyl group of the maleimidyl magnetic nanoplatform. The fabricated MRI probes were applied to four cancer cell lines: HT1080, MCF7, MKN45, and HEK293T. To investigate the potential of the molecular MRI probe, the target-biomarker specificity was confirmed without serious cytotoxicity, and in vivo MRI analysis using a xenograft mouse model was demonstrated. We believe these results will be useful for fabricating molecular MRI probes for the diagnosis of cancer.

Original languageEnglish
Article number275102
Issue number27
Publication statusPublished - 2014 Jul 11

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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