- Title
- Photodynamic therapy activity of zinc phthalocyanine linked to folic acid and magnetic nanoparticles
- Creator
- Matlou, Gauta G, Oluwole, David O, Prinsloo, Earl, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2018
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/234429
- Identifier
- vital:50195
- Identifier
- xlink:href="https://doi.org/10.1016/j.jphotobiol.2018.07.025"
- Description
- In this work, the photodynamic therapy (PDT) activities (using human carcinoma adherent MCF-7 cells) of zinc phthalocyanine derivatives: complexes 1 (Zn mono cinnamic acid phthalocyanine) and 2 (zinc mono carboxyphenoxy phthalocyanine) when covalently linked to folic acid (FA) and amine functionalized magnetic nanoparticles (AMNPs) are reported. The covalent linkage of asymmetric zinc cinnamic acid Pc (1) to FA (1-FA) through an amide bond is reported for the first time. Complex 1 is insoluble in water, but upon linkage to FA, (to form 1-FA) the molecule become water soluble, hence the UV–Vis spectrum and singlet oxygen quantum yield for 1-FA were also done in water since water solubility is essential for biological applications. The reported 2-FA is also water soluble. Linking complexes 1 and 2 to FA and AMNPs decreased the dark toxicity of 1 and 2 on MCF-7 cells. Pc-FA (1-FA and 2-FA) conjugates had better singlet oxygen quantum yields (Φ∆) in DMSO as compared to Pc-AMNPs (1-AMNPs and 2-AMNPs). The water- soluble 1-FA and 2-FA also achieved a better photodynamic therapy (PDT) activity as compared to 1-AMNPs and 2-AMNPs. Folic acid targeting on the tumor cells may have also facilitated better bioavailability of 1-FA and 2-FA and improved PDT activity on MCF-7 cells over AMNPs carriers.
- Format
- computer, online resource, application/pdf, 1 online resource (9 pages), pdf
- Publisher
- Elsevier
- Language
- English
- Relation
- Journal of Photochemistry and Photobiology B: Biology, Matlou, G.G., Oluwole, D.O., Prinsloo, E. and Nyokong, T., 2018. Photodynamic therapy activity of zinc phthalocyanine linked to folic acid and magnetic nanoparticles. Journal of Photochemistry and Photobiology B: Biology, 186, pp.216-224, Journal of Photochemistry and Photobiology B: Biology volume 186 p. 216 2018 1873-2682
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Elsevier Terms and Conditions Statement (https://www.elsevier.com/legal/elsevier-website-terms-and-conditions)
- Rights
- Closed Access
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Collections
Prinsloo, Earl (Dr)
RU DST/NRF SARChI for Biotechnology Innovation and Engagement
RU DST/NRF SARChI for Medicinal Chemistry and Nanotechnology
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
SDG 09. Industry, Innovation and Infrastructure
SDG 03. Good Health and Well-Being
| Thumbnail | File | Description | Size | Format | |||
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| View Details | SOURCE1 | Photodynamic therapy activity of zinc phthalocyanine linked to folic acid.pdf | 694 KB | Adobe Acrobat PDF | View Details |