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A Magnetic Nanoparticle Stabilized Gas Containing Emulsion for Multimodal Imaging and Triggered Drug Release

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ABSTRACT

Purpose

To develop a multimodal imaging guided and triggered drug delivery system based on a novel emulsion formulation composed of iron oxide nanoparticles, nanoscopic bubbles, and oil containing drugs.

Methods

Iron oxide paramagnetic nanoparticles were synthesized and modified with surface conjugation of polyethylenimide (PEI) or Bovine Serum Albumin (BSA). Both particles were used to disperse and stabilize oil in water emulsions containing coumarin-6 as the model drug. Sulfur hexafluoride was introduced into the oil phase to form nanoscopic bubbles inside the emulsions. The resulted gas containing emulsions were evaluated for their magnetic resonance (MR) and ultrasound (US) imaging properties. The drug release profile triggered by ultrasound was also examined.

Results

We have successfully prepared the highly integrated multi-component emulsion system using the surface modified iron oxide nanoparticles to stabilize the interfaces. The resulted structure had distinctive MR and US imaging properties. Upon application of ultrasound waves, the gas containing emulsion would burst and encapsulated drug could be released.

Conclusion

The integrated emulsion formulation was multifunctional with paramagnetic, sono-responsive and drug-carrying characteristics, which may have potential applications for disease diagnosis and imaging guided drug release.

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Authors and Affiliations

  1. School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240, People’s Republic of China

    Wei Guo, Xiaohui Wei & Yuhong Xu

  2. Ultrasonic Center, Shanghai No.6 Hospital, Shanghai, 200233, People’s Republic of China

    Diancheng Li & Jia-an Zhu

  3. MRI Research Center, East China Normal University, Shanghai, 200062, People’s Republic of China

    Weiwei Men, Dazhi Yin & Mingxia Fan

  4. Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, 116044, People’s Republic of China

    Wei Guo

Authors
  1. Wei Guo
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  2. Diancheng Li
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  3. Jia-an Zhu
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  4. Xiaohui Wei
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  5. Weiwei Men
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  6. Dazhi Yin
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  7. Mingxia Fan
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  8. Yuhong Xu
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Correspondence to Yuhong Xu.

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Guo, W., Li, D., Zhu, Ja. et al. A Magnetic Nanoparticle Stabilized Gas Containing Emulsion for Multimodal Imaging and Triggered Drug Release. Pharm Res 31, 1477–1484 (2014). https://doi.org/10.1007/s11095-014-1365-8

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  • DOI: https://doi.org/10.1007/s11095-014-1365-8

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