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Carbon Dots Derived from Tea Polyphenols as Photosensitizers for Photodynamic Therapy. | LitMetric

Carbon Dots Derived from Tea Polyphenols as Photosensitizers for Photodynamic Therapy.

Molecules

School of Materials Science and Engineering, Anhui University, 111 Jiulong Road, Hefei 230601, China.

Published: December 2022

AI Article Synopsis

Article Abstract

Photodynamic therapy (PDT) has become an emerging cancer treatment method. Choosing the photosensitizer (PS) compounds is one of the essential factors that can influence the PDT effect and action. Carbon dots (CDs) have shown great potential as photosensitizers in PDT of cancers due to their excellent biocompatibility and high generation of reactive oxygen species (ROS). Here, we used tea polyphenol as raw material for synthesized tea polyphenol carbon dots (T-CDs) that show dual emission bands of red and blue fluorescence and can efficiently generate hydroxyl radicals (OH) under mildly visible irradiation with a LED light (400-500 nm, 15 mW cm). The extremely low cytotoxicity and excellent biocompatibility of T-CDs without light irradiation were tested using MTT and hemolytic assay. Further, T-CDs have been shown by in vivo experiments, using a mouse breast cancer cell line (4T1) subcutaneously injected in the back of the mouse buttock as a model, to effectively inhibit the tumor cell proliferation in solid tumors and show an excellent PDT effect. In addition, pathological sections of the mice tissues after further treatment showed that the T-CDs had no apparent impact on the major organs of the mice and did not produce any side effect lesions. This work demonstrates that the as-synthesized T-CDs has the potential to be used as a PS in cancer treatment.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9736769PMC
http://dx.doi.org/10.3390/molecules27238627DOI Listing

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