PMID- 23679827 OWN - NLM STAT- MEDLINE DCOM- 20140115 LR - 20130603 IS - 1543-8392 (Electronic) IS - 1543-8384 (Linking) VI - 10 IP - 6 DP - 2013 Jun 3 TI - Reversal of multidrug resistance by mitochondrial targeted self-assembled nanocarrier based on stearylamine. PG - 2426-34 LID - 10.1021/mp400039j [doi] AB - Multidrug resistance (MDR) remains one of the major challenges for successful chemotherapy. Herein, we tried to develope a mitochondria targeted teniposide loaded self-assembled nanocarrier based on stearylamine (SA-TSN) to reverse MDR of breast cancer. SA-TSN was nanometer-sized spherical particles (31.59 +/- 3.43 nm) with a high encapsulation efficiency (99.25 +/- 0.21%). The MDR in MCF-7/ADR cells was obviously reduced by SA-TSN, which mainly attributed to the markedly reduced expression of P-gp, increased percentages in G2 phase, selectively accumulation in mitochondria, decrease of mitochondrial membrane potential, and greatly improved apoptosis. The plasma concentration of teniposide was greatly improved by SA-TSN, and the intravenously administered SA-TSN could accumulate in the tumor site and penetrate into the inner site of tumor in MCF-7/ADR induced xenografts. In particular, the in vivo tumor inhibitory efficacy of SA-TSN in MCF-7/ADR induced models was more effective than that of teniposide loaded self-assembled nanocarrier without stearylamine (TSN) and teniposide solution (TS), which verified the effectiveness of SA-TSN in reversal of MDR. Thereby, SA-TSN has potential to circumvent the MDR for the chemotherapy of breast cancer. FAU - Zhang, Zhiwen AU - Zhang Z AD - Center of Pharmaceutics, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China. FAU - Liu, Zeying AU - Liu Z FAU - Ma, Li AU - Ma L FAU - Jiang, Shijun AU - Jiang S FAU - Wang, Yixin AU - Wang Y FAU - Yu, Haijun AU - Yu H FAU - Yin, Qi AU - Yin Q FAU - Cui, Jingbin AU - Cui J FAU - Li, Yaping AU - Li Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130516 PL - United States TA - Mol Pharm JT - Molecular pharmaceutics JID - 101197791 RN - 0 (Amines) RN - 957E6438QA (Teniposide) RN - FFV58UNY7O (stearylamine) SB - IM MH - Amines/pharmacokinetics/*therapeutic use MH - Animals MH - Apoptosis/drug effects MH - Breast Neoplasms/*drug therapy MH - Cell Cycle/drug effects MH - Cell Proliferation/drug effects MH - Drug Resistance, Neoplasm/drug effects MH - Female MH - Humans MH - MCF-7 Cells MH - Membrane Potential, Mitochondrial/drug effects MH - Mice MH - Mice, Nude MH - Rats MH - Rats, Sprague-Dawley MH - Teniposide/pharmacokinetics/therapeutic use EDAT- 2013/05/18 06:00 MHDA- 2014/01/16 06:00 CRDT- 2013/05/18 06:00 PHST- 2013/05/18 06:00 [entrez] PHST- 2013/05/18 06:00 [pubmed] PHST- 2014/01/16 06:00 [medline] AID - 10.1021/mp400039j [doi] PST - ppublish SO - Mol Pharm. 2013 Jun 3;10(6):2426-34. doi: 10.1021/mp400039j. Epub 2013 May 16.