Biosensors (Jun 2023)

NIR-II Absorbing Conjugated Polymer Nanotheranostics for Thermal Initiated NO Enhanced Photothermal Therapy

  • Kaiwen Chang,
  • Xiaolin Sun,
  • Qiaofang Qi,
  • Mingying Fu,
  • Bing Han,
  • Yang Zhang,
  • Wei Zhao,
  • Tianjun Ni,
  • Qiong Li,
  • Zhijun Yang,
  • Chunpo Ge

DOI
https://doi.org/10.3390/bios13060642
Journal volume & issue
Vol. 13, no. 6
p. 642

Abstract

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Photothermal therapy (PTT) has received constant attention as a promising cancer treatment. However, PTT-induced inflammation can limit its effectiveness. To address this shortcoming, we developed second near-infrared (NIR-II) light-activated nanotheranostics (CPNPBs), which include a thermosensitive nitric oxide (NO) donor (BNN6) to enhance PTT. Under a 1064 nm laser irradiation, the conjugated polymer in CPNPBs serves as a photothermal agent for photothermal conversion, and the generated heat triggers the decomposition of BNN6 to release NO. The combination of hyperthermia and NO generation under single NIR-II laser irradiation allows enhanced thermal ablation of tumors. Consequently, CPNPBs can be exploited as potential candidates for NO-enhanced PTT, holding great promise for their clinical translational development.

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