Photodynamic therapy with the dual-mode association of IR780 to PEG-PLA nanocapsules and the effects on human breast cancer cells
| Autor: | Renata Tupinambá Branquinho, Vanessa Carla Furtado Mosqueira, Raoni Pais Siqueira, Maria Alice de Oliveira, Gwenaelle Pound-Lana, Marina Guimarães Carvalho Machado, Elisa Gomes Lanna |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Biodistribution
Indoles medicine.medical_treatment Cell Phototheranostics Image-guided therapy Apoptosis Breast Neoplasms Photodynamic therapy RM1-950 Biodegradable Plastics Polymer conjugation Nanocapsules Polyethylene Glycols Cell Movement Polymeric nanocapsules medicine Humans Cytotoxic T cell Tissue Distribution Photosensitizer Precision Medicine skin and connective tissue diseases Cell Proliferation Fluorescent Dyes Pharmacology Photosensitizing Agents Chemistry IR780 General Medicine Photothermal therapy medicine.anatomical_structure Photochemotherapy Cancer cell MCF-7 Cells Cancer research Therapeutics. Pharmacology |
| Zdroj: | Biomedicine & Pharmacotherapy, Vol 145, Iss, Pp 112464-(2022) |
| ISSN: | 0753-3322 |
| DOI: | 10.1016/j.biopha.2021.112464 |
| Popis: | IR780 is a near-infrared fluorescent dye, which can be applied as a photosensitizer in photodynamic (PDT) and photothermal (PTT) therapies and as a biodistribution tracer in imaging techniques. We investigated the growth and migration inhibition and mechanism of death of breast tumor cells, MCF-7 and MDA-MB-231, exposed to polymeric nanocapsules (NC) comprising IR780 covalently linked to the biodegradable polymer PLA (IR-PLA) and IR780 physically encapsulated (IR780-NC) in vitro. Both types of NC had mean diameters around 120 nm and zeta potentials around −40 mV. IR-PLA-NC was less cytotoxic than IR780 NC to a non-tumorigenic mammary epithelial cell line, MCF-10A, which is an important aspect of selectivity. Free-IR780 was more cytotoxic than IR-PLA-NC for MCF-7 and MDA-MB-231 cells after illumination with a 808 nm laser. IR-PLA NC was effective to inhibit colony formation (50%) and migration (30–40%) for both cancer cell lines. MDA-MB-231 cells were less sensitive to all IR780 formulations compared to MCF-7 cells. Cell uptake was higher with IR-PLA-NC than with IR780-NC and free-IR780 in both cancer cell lines (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect