Photo-Activable Organosilver Nanosystem Facilitates Synergistic Cancer Theranostics.
Xiaohui LiuDuoyang FanYueming RenShuai HuangJipeng DingMin LiuSeraphine Valeska WegnerJing HouPengfei RongFei ChenWenbin ZengPublished in: ACS applied materials & interfaces (2022)
Anticancer drug development is important for human health, yet it remains a tremendous challenge. Photodynamic therapy (PDT), which induces cancer cell apoptosis via light-triggered production of reactive oxygen species, is a promising method. However, it has minimal efficacy in subcellular targeting, hypoxic microenvironments, and deep-seated malignancies. Here, we constructed a breast cancer photo-activable theranostic nanosystem through the rational design of a synthetic lysosomal-targeted molecule with multifunctions as aggregation-induced near-infrared (NIR) emission, a photosensitizer (PDT), and organosilver (chemotherapy) for NIR imaging and synergistic cancer therapy. The synthetic molecule could self-assemble into nanoparticles ( TPIMBS NPs) and be stabilized with amphiphilic block copolymers for enhanced accumulation in tumor sites through passive targeting while reducing the leakage in normal tissues. Through photochemical internalization, TPIMBS NPs preferentially concentrated in the lysosomes of cancer cells and generated reactive oxygen species (ROS) upon light irradiation, resulting in lysosomal rupture and release of PSs to the cytosol, which led to cell apoptosis. Further, the photoinduced release of Ag + from TPIMBS NPs could act as chemotherapy, significantly improving the overall therapeutic efficacy by synergistic effects with PDT. This research sheds fresh light on the creation of effective cancer treatments.
Keyphrases
- photodynamic therapy
- cancer therapy
- reactive oxygen species
- fluorescence imaging
- papillary thyroid
- drug delivery
- human health
- squamous cell
- risk assessment
- gene expression
- cell proliferation
- cell death
- dna damage
- wastewater treatment
- high resolution
- lymph node metastasis
- climate change
- radiation therapy
- oxidative stress
- fluorescent probe
- quantum dots
- solid state