Hydrogen Sulfide-Activatable Second Near-Infrared Fluorescent Nanoassemblies for Targeted Photothermal Cancer Therapy
Citations Over TimeTop 1% of 2018 papers
Abstract
Near-infrared (NIR)-II fluorescence agents hold great promise for deep-tissue photothermal therapy (PTT) of cancers, which nevertheless remains restricted by the inherent nonspecificity and toxicity of PTT. In response to this challenge, we herein develop a hydrogen sulfide (H2S)-activatable nanostructured photothermal agent (Nano-PT) for site-specific NIR-II fluorescence-guided PTT of colorectal cancer (CRC). Our in vivo studies reveal that this theranostic Nano-PT probe is specifically activated in H2S-rich CRC tissues, whereas it is nonfunctional in normal tissues. Activation of Nano-PT not only emits NIR-II fluorescence with deeper tissue penetration ability than conventional fluorescent probes but also generates high NIR absorption resulting in efficient photothermal conversion under NIR laser irradiation. Importantly, we establish NIR-II imaging-guided PTT of CRC by applying the Nano-PT agent in tumor-bearing mice, which results in complete tumor regression with minimal nonspecific damages. Our studies thus shed light on the development of cancer biomarker-activated PTT for precision medicine.
Related Papers
- → Photodynamic Therapy (PDT): PDT Mechanisms(2013)657 cited
- → Emerging Advanced Nanomaterials for Cancer Photothermal Therapy(2018)47 cited
- → Photodynamic Therapy for Cancer(2006)17 cited
- → The Past and Present of Photodynamic Therapy in Ophthalmology(2021)1 cited
- Advances of 5-aminolevulinic Acid Photodynamic Therapy in Dermatology and Venerology(2008)