1. Glucose oxidase-loaded colloidal stable WS 2 nanobowls for combined starvation/photothermal therapy of colorectal tumors.
- Author
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Chen Z, Zheng X, Zhao J, Tang J, Hu L, and Wang S
- Subjects
- Humans, Photothermal Therapy, Glucose Oxidase chemistry, Hydrogen Peroxide chemistry, Povidone, Glucose, Cell Line, Tumor, Colorectal Neoplasms drug therapy, Neoplasms drug therapy, Nanoparticles chemistry
- Abstract
Glucose is used as an important nutrient to support cell growth. The glucose oxidase (GOx) can transform glucose into gluconic acid and toxic H
2 O2 , which can be used for tumor starvation therapy. However, the leakage of GOx may cause severe side effects to the normal tissue. To prevent the accidental leakage of GOx, this study proposes the chemical modification of GOx on the photothermal transducing agent surface, to realize the safe and combined starvation and photothermal therapy of colorectal tumors. Polyvinylpyrrolidone (PVP)-modified WS2 nanobowls (WS2 -PVP) as a photothermal transducing agent were produced using a one-pot preparation method. Then, α-lipoic acid (LA) molecules were immobilized at the sulfur-deficient sites on the surface of WS2 nanobowls to afford the chemical loading of GOx through amide bonds. Under the irradiation of a near-infrared laser (808 nm), thermal energy is generated by WS2 to kill colorectal cancer cells locally. The photothermal conversion efficiency of WS2 -PVP-LA was 27.2%. This study is anticipated to open up an alternative avenue for the rational design of multifunctional nanotherapeutics for tumor therapy., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier B.V. All rights reserved.)- Published
- 2023
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