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

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

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 Abstrac...

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Autores principales: Chen LQ, Huang W, Gao ZG, Fang WS, Jin MJ
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2016
Materias:
Lx2-32c
micelles
small size
4T1 mammary carcinoma
tumor therapy
metastasis
Medicine (General)
R5-920
Acceso en línea:https://doaj.org/article/9973264bd4ca4835b69a088934a3bb5a
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spelling oai:doaj.org-article:9973264bd4ca4835b69a088934a3bb5a2021-12-02T02:08:11ZLx2-32c–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 cancer1178-2013https://doaj.org/article/9973264bd4ca4835b69a088934a3bb5a2016-10-01T00:00:00Zhttps://www.dovepress.com/lx2-32cndashloaded-polymeric-micelles-with-small-size-for-intravenous--peer-reviewed-article-IJNhttps://doaj.org/toc/1178-2013Li-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, metastasisChen LQHuang WGao ZGFang WSJin MJDove Medical PressarticleLx2-32cmicellessmall size4T1 mammary carcinomatumor therapymetastasisMedicine (General)R5-920ENInternational Journal of Nanomedicine, Vol Volume 11, Pp 5457-5472 (2016)
institution DOAJ
collection DOAJ
language EN
topic Lx2-32c
micelles
small size
4T1 mammary carcinoma
tumor therapy
metastasis
Medicine (General)
R5-920
spellingShingle Lx2-32c
micelles
small size
4T1 mammary carcinoma
tumor therapy
metastasis
Medicine (General)
R5-920
Chen LQ
Huang W
Gao ZG
Fang WS
Jin MJ
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
description 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
format article
author Chen LQ
Huang W
Gao ZG
Fang WS
Jin MJ
author_facet Chen LQ
Huang W
Gao ZG
Fang WS
Jin MJ
author_sort Chen LQ
title 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
title_short 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
title_full 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
title_fullStr 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
title_full_unstemmed 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
title_sort 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
publisher Dove Medical Press
publishDate 2016
url https://doaj.org/article/9973264bd4ca4835b69a088934a3bb5a
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