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Lx2-32c–loaded polymeric micelles with small size for intravenous drug delivery and their inhibitory effect on tumor growth and metastasis in clinically associated 4T1 murine breast cancer
- Source :
- International Journal of Nanomedicine
- Publication Year :
- 2016
- Publisher :
- Dove Press, 2016.
-
Abstract
- Li-qing Chen, Wei Huang, Zhong-gao Gao, Wei-shuo Fang, Ming-ji Jin State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China Abstract: Lx2-32c is a novel taxane derivative with a strong antitumor activity. In this study, we developed Lx2-32c–loaded polymeric micelles (Lx2-32c-PMs) with small size and investigated their antitumor efficacy against tumor growth and metastasis on 4T1 murine breast cancer cell line with Cremophor EL–based Lx2-32c solution as the control. In this study, copolymer monomethoxy polyethylene glycol2000–polylactide1300 was used to prepare Lx2-32c-PMs by film hydration method, and their physicochemical properties were characterized as well, according to morphology, particle size, zeta potential, in vitro drug release, and reconstitution stability. Under confocal laser scanning microscopy, it was observed that Lx2-32c-PMs could be effectively taken up by 4T1 cells in a time-dependent manner. Cell Counting Kit-8 assay showed that the IC50 of Lx2-32c-PMs was 0.3827 nM. Meanwhile, Lx2-32c-PMs had better ability to promote apoptosis and induce G2/M cycle block and polyploidy formation, compared with Lx2-32c solution. More importantly, in vivo animal studies showed that compared to Lx2-32c solution, Lx2-32c-PMs possessed better ability not only to effectively inhibit the tumor growth, but also to significantly suppress spontaneous and postoperative metastasis to distant organs in 4T1 orthotopic tumor-bearing mice. Consequently, Lx2-32c-PMs have significantly prolonged the survival lifetime of tumor-bearing mice. Thus, our study reveals that Lx2-32c-PMs had favorable antitumor activity and exhibited a good prospect for application in the field of antitumor therapy. Keywords: Lx2-32c, micelles, small size, 4T1 mammary carcinoma, tumor therapy, metastasis
- Subjects :
- Materials science
Lung Neoplasms
Polymers
micelles
Polyesters
Biophysics
Pharmaceutical Science
Bioengineering
Antineoplastic Agents
Apoptosis
02 engineering and technology
4T1 mammary carcinoma
010402 general chemistry
01 natural sciences
Micelle
Metastasis
Polyethylene Glycols
Biomaterials
small size
Mice
Breast cancer
Drug Delivery Systems
In vivo
International Journal of Nanomedicine
Drug Discovery
medicine
Animals
metastasis
Particle Size
IC50
Original Research
Mice, Inbred BALB C
Organic Chemistry
Mammary Neoplasms, Experimental
General Medicine
021001 nanoscience & nanotechnology
medicine.disease
In vitro
0104 chemical sciences
Lx2-32c
Immunology
Cancer research
Administration, Intravenous
Female
Animal studies
tumor therapy
0210 nano-technology
Subjects
Details
- Language :
- English
- ISSN :
- 11782013
- Database :
- OpenAIRE
- Journal :
- International Journal of Nanomedicine
- Accession number :
- edsair.doi.dedup.....d7be34580df18c5531b221a7a8180382