Iron(II) phthalocyanine Loaded and AS1411 Aptamer Targeting Nanoparticles: A Nanocomplex for Dual Modal Imaging and Photothermal Therapy of Breast Cancer.
Int J Nanomedicine
; 15: 5927-5949, 2020.
Article
in En
| MEDLINE
| ID: mdl-32848397
ABSTRACT
PURPOSE:
A multi-functional nanoplatform with diagnostic imaging and targeted treatment functions has aroused much interest in the nanomedical research field and has been paid more attention in the field of tumor diagnosis and treatment. However, some existing nano-contrast agents have encountered difficulties in different aspects during clinical promotion, such as complicated preparation process and low specificity. Therefore, it is urgent to find a nanocomplex with good targeting effect, high biocompatibility and significant therapeutic effect for the integration of diagnosis and treatment and clinical transformation. MATERIALS ANDMETHODS:
Nanoparticles (NPs) targeting breast cancer were synthesized by phacoemulsiï¬cation which had liquid ï¬uorocarbon perï¬uoropentane(PFP) in the core and were loaded with Iron(II) phthalocyanine (FePc) on the shell. The aptamer (APT) AS1411 was outside the shell used as a molecular probe. Basic characterization and targeting abilities of the NPs were tested, and their cytotoxicity and biological safety in vivo were evaluated through CCK-8 assay and blood bio-chemical analysis. The photoacoustic (PA) and ultrasound (US) imaging system were used to assess the effects of AS1411-PLGA@FePc@PFP (A-FP NPs) as dual modal contrast agent in vitro and in vivo. The effects of photothermal therapy (PTT) in vitro and in vivo were evaluated through MCF-7 cells and tumor-bearing nude mouse models.RESULTS:
A-FP NPs, with good stability, great biocompatibility and low toxicity, were of 201.87 ± 1.60 nm in diameter, and have an active targeting effect on breast cancer cells and tissues. With the help of PA/US imaging, it was proved to be an excellent dual modal contrast agent for diagnosis and guidance of targeted therapy. Meanwhile, it can heat up under near-infrared (NIR) laser irradiation and has achieved obvious antitumor effect both in vitro and in vivo experiments.CONCLUSION:
As a kind of nanomedicine, A-FP NPs can be used in the integration of diagnosis and treatment. The treatment effects and biocompatibility in vivo may provide new thoughts in the clinical transformation of nanomedicine and early diagnosis and treatment of breast cancer.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Oligodeoxyribonucleotides
/
Breast Neoplasms
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Multifunctional Nanoparticles
/
Indoles
Type of study:
Diagnostic_studies
/
Guideline
/
Screening_studies
Limits:
Animals
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Female
/
Humans
Language:
En
Journal:
Int J Nanomedicine
Year:
2020
Document type:
Article