Rational Design of Conjugated Photosensitizers with Controllable Photoconversion for Dually Cooperative Phototherapy

Shuyue Ye, Jiaming Rao, Shihong Qiu, Jinglong Zhao, Hui He, Ziling Yan, Tao Yang, Yibin Deng, Hengte Ke, Hong Yang, Yuliang Zhao, Zhengqing Guo, Huabing Chen

Research output: Contribution to journalArticle

86 Scopus citations

Abstract

High-performance photosensitizers are highly desired for achieving selective tumor photoablation in the field of precise cancer therapy. However, photosensitizers frequently suffer from limited tumor suppression or unavoidable tumor regrowth due to the presence of residual tumor cells surviving in phototherapy. A major challenge still remains in exploring an efficient approach to promote dramatic photoconversions of photosensitizers for maximizing the anticancer efficiency. Here, a rational design of boron dipyrromethene (BDP)-based conjugated photosensitizers (CPs) that can induce dually cooperative phototherapy upon light exposure is demonstrated. The conjugated coupling of BDP monomers into dimeric BDP (di-BDP) or trimeric BDP (tri-BDP) induces photoconversions from fluorescence to singlet-to-triplet or nonradiative transitions, together with distinctly redshifted absorption into the near-infrared region. In particular, tri-BDP within nanoparticles shows preferable conversions into both primary thermal effect and minor singlet oxygen upon near-infrared light exposure, dramatically achieving tumor photoablation without any regrowth through their cooperative anticancer efficiency caused by their dominant late apoptosis and moderate early apoptosis. This rational design of CPs can serve as a valuable paradigm for cooperative cancer phototherapy in precision medicine.

Original languageEnglish (US)
Article number1801216
JournalAdvanced Materials
Volume30
Issue number29
DOIs
StatePublished - Jul 19 2018

Keywords

  • boron dipyrromethene
  • conjugated photosensitizers
  • near-infrared absorption
  • photodynamic therapy
  • photothermal therapy

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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