Theranostics 2011; 1:354-362. doi:10.7150/thno/v01p0354 This volume

Research Paper

Multimodal Bacteriochlorophyll Theranostic Agent

Tracy W.B. Liu1,2, Juan Chen2, Laura Burgess1,2, Weiguo Cao1,3, Jiyun Shi1,2, Brian C. Wilson1,2, Gang Zheng1,2,✉

1. Department of Medical Biophysics, University of Toronto, Toronto, Canada;
2. Ontario Cancer Institute, University Health Network, Toronto, Canada;
3. Department of Chemistry, Shanghai University, Shanghai, China

This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY-NC) License. See for full terms and conditions.
Liu TWB, Chen J, Burgess L, Cao W, Shi J, Wilson BC, Zheng G. Multimodal Bacteriochlorophyll Theranostic Agent. Theranostics 2011; 1:354-362. doi:10.7150/thno/v01p0354. Available from

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The complimentary ability of different noninvasive imaging technologies with therapeutic modalities can be used in tandem providing high-resolution and highly sensitive imaging of events at the molecular and cellular level providing a means for image-guided therapy. There is increasing interest in using porphyrin-based photosensitizers as theranostics to take advantages of their near-infrared fluorescent properties for imaging and their strong singlet oxygen generation abilities for photodynamic therapy. Here we report a targeted multimodal bacteriochlorophyll theranostic probe. This probe consists of a bacteriochlorophyll derivative, a pharmacokinetics modification peptide linker and folate for targeted delivery to folate receptor expressing cancer cells. We demonstrate its multimodal theranostic capability, its folate receptor targeting ability and its utility for both NIR fluorescence imaging and photodynamic therapy purposes both in vitro and in vivo.

Keywords: Photodynamic therapy, Fluorescence, Porphyrin, Folate receptor and peptides