Characterization of a multiple particle delivery complex and determination of cellular photodamage in skin fibroblast and breast cancer cell lines.

Abstract:

:Zinc metallized Phthalocyanine (ZnPcSmix ), a potent photosensitizer, is conjugated to gold dendrimer encapsulated nanoparticles (AuDENPs) in order to improve the efficacy of photodynamic therapy (PDT) using MCF-7 breast cancer cells and WS1 fibroblast cells as a control. Both ZnPcSmix and AuDENPs are mixed in a nitrogen atmosphere for 48 hours and characterization analysis conducted using ultraviolet-visible (UV-vis) spectrometry for spectral properties, transmission electron microscopy (TEM) for morphological features and zeta potential measurement for surface stability and size distribution of the compound obtained or of the multiple particles delivery complex (MPDC). Cell viability, proliferation and membrane damage following PDT are assessed by the trypan blue exclusion test, adenosine triphosphate luminescence and lactate dehydrogenase cytotoxicity assays, respectively. Stable MPDCs are spherical shaped with a diameter lesser than 5 nm, and have a maximum absorption peak at 676 nm. The MPDC-mediated PDT induces a decrease in cell viability and proliferation, and increased membrane damage or cytotoxicity. The conjugation enhances the therapeutic efficiency of PDT by improving drug delivery and targeting of MCF-7 cancer cells.

journal_name

J Biophotonics

journal_title

Journal of biophotonics

authors

Mfouo-Tynga I,Houreld NN,Abrahamse H

doi

10.1002/jbio.201700077

subject

Has Abstract

pub_date

2018-02-01 00:00:00

issue

2

eissn

1864-063X

issn

1864-0648

journal_volume

11

pub_type

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