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NVP-BEZ235/Chlorin-e6 co-loaded nanoparticles ablate breast cancer by biochemical and photodynamic synergistic effects
- Source :
- Nano Research. 11:4846-4858
- Publication Year :
- 2018
- Publisher :
- Springer Science and Business Media LLC, 2018.
-
Abstract
- Seeking profitable therapies for triple-negative breast cancer (TNBC) has attracted intense research interest. However, an efficient cure for TNBC remains an unresolved challenge in oncology. Herein, for the first time, we describe the use of polymeric nanoparticles loaded with NVP-BEZ235 and Chlorin-e6, denoted as NVP/Ce6@NPs, to overcome the adaptive treatment tolerance of TNBC by taking advantage of the synergistic effect between biochemical and photodynamic therapies. Upon laser irradiation, the NVP/Ce6@NPs generated reactive oxygen species (ROS) and efficiently induced the apoptosis of tumor cells through DNA damage. Furthermore, the released NVP-BEZ235 could prevent Chk1 phosphorylation-induced DNA damage repair, thus enhancing the sensitivity of tumor cells to ROS. Animal studies on mice bearing an MDA- MB-231 tumor validated that the NVP/Ce6@NPs had a greater therapeutic efficacy compared to that of monotherapies, with an inhibition ratio of 89.3%. Western blotting and cell viability analyses confirmed the inhibition of both MDA-MB-231 cell proliferation and Chk1 phosphorylation by NVP/Ce6@NPs. These findings provide a rational understanding of the synergistic effect of the biochemical/photodynamic therapy and pave the way for the development of efficient therapeutic approaches to fight against TNBC.
- Subjects :
- 0301 basic medicine
chemistry.chemical_classification
Reactive oxygen species
Cell growth
DNA damage
medicine.medical_treatment
Photodynamic therapy
Condensed Matter Physics
medicine.disease
Atomic and Molecular Physics, and Optics
Blot
03 medical and health sciences
030104 developmental biology
0302 clinical medicine
Breast cancer
chemistry
Apoptosis
030220 oncology & carcinogenesis
Cancer research
medicine
General Materials Science
Viability assay
Settore BIO/10
Electrical and Electronic Engineering
Subjects
Details
- ISSN :
- 19980000 and 19980124
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Nano Research
- Accession number :
- edsair.doi.dedup.....91b0ec5a44df18d9af5421471a75640c