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pH‐Responsive Wormlike Micelles with Sequential Metastasis Targeting Inhibit Lung Metastasis of Breast Cancer
Author(s) -
He Xinyu,
Yu Haijun,
Bao Xiaoyue,
Cao Haiqiang,
Yin Qi,
Zhang Zhiwen,
Li Yaping
Publication year - 2016
Publication title -
advanced healthcare materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.288
H-Index - 90
eISSN - 2192-2659
pISSN - 2192-2640
DOI - 10.1002/adhm.201500626
Subject(s) - metastasis , breast cancer , breast cancer metastasis , cancer research , micelle , lung cancer , cancer metastasis , cancer , medicine , chemistry , aqueous solution
Cancer metastasis is the main cause for the high mortality in breast cancer patients. Herein, we first report succinobucol‐loaded pH‐responsive wormlike micelles (PWMs) with sequential targeting capability to inhibit lung metastasis of breast cancer. PWMs can in a first step be delivered specifically to the sites of metastases in the lungs and then enable the intracellular pH‐stimulus responsive drug release in cancer cells to improve the anti‐metastatic effect. PWMs are identified as nanofibrillar assemblies with a diameter of 19.9 ± 1.9 nm and a length within the 50–200 nm range, and exhibited pH‐sensitive drug release behavior in response to acidic intracellular environments. Moreover, PWMs can obviously inhibit the migration and invasion abilities of metastatic 4T1 breast cancer cells, and reduce the expression of the metastasis‐associated vascular cell adhesion molecule‐1 (VCAM‐1) at 400 ng mL −1 of succinobucol. In particular, PWMs can induce a higher specific accumulation in lung and be specifically delivered to the sites of metastases in lung, thereby leading to an 86.6% inhibition on lung metastasis of breast cancer. Therefore, the use of sequentially targeting PWMs can become an encouraging strategy for specific targeting and effective treatment of cancer metastasis.