Cellular Delivery of Doxorubicin via pH-Controlled Hydrazone Linkage Using Multifunctional Nano Vehicle Based on Poly(β-L-Malic Acid)

被引:70
作者
Patil, Rameshwar [1 ]
Portilla-Arias, Jose [1 ]
Ding, Hui [1 ]
Konda, Bindu [1 ]
Rekechenetskiy, Arthur [1 ]
Inoue, Satoshi [1 ]
Black, Keith L. [1 ]
Holler, Eggehard [1 ,2 ]
Ljubimova, Julia Y. [1 ]
机构
[1] Cedars Sinai Med Ctr, Dept Neurosurg, Nanomed Res Ctr, Los Angeles, CA 90048 USA
[2] Univ Regensburg, Inst Biophys & Phys Biochem, D-93053 Regensburg, Germany
关键词
polymalic acid; doxorubicin; nanoconjugate; pH-controlled hydrazine linkage; brain and breast cancer; MULTIDRUG-RESISTANCE; TUMOR; EFFICACY; COPOLYMERS; MECHANISMS; GROWTH;
D O I
10.3390/ijms130911681
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Doxorubicin (DOX) is currently used in cancer chemotherapy to treat many tumors and shows improved delivery, reduced toxicity and higher treatment efficacy when being part of nanoscale delivery systems. However, a major drawback remains its toxicity to healthy tissue and the development of multi-drug resistance during prolonged treatment. This is why in our work we aimed to improve DOX delivery and reduce the toxicity by chemical conjugation with a new nanoplatform based on polymalic acid. For delivery into recipient cancer cells, DOX was conjugated via pH-sensitive hydrazone linkage along with polyethylene glycol (PEG) to a biodegradable, non-toxic and non-immunogenic nanoconjugate platform: poly(beta-L-malic acid) (PMLA). DOX-nanoconjugates were found stable under physiological conditions and shown to successfully inhibit in vitro cancer cell growth of several invasive breast carcinoma cell lines such as MDA-MB-231 and MDA-MB-468 and of primary glioma cell lines such as U87MG and U251.
引用
收藏
页码:11681 / 11693
页数:13
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