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Oncology Reports 2018-Aug

Fabrication of psoralen-loaded lipid-polymer hybrid nanoparticles and their reversal effect on drug resistance of cancer cells.

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Yueling Yuan
Peter Chiba
Tiange Cai
Richard Callaghan
Li Bai
Susan P C Cole
Yu Cai

Mots clés

Abstrait

In the present study, a lipid-polymer hybrid drug carrier system was developed to encapsulate psoralen (PSO), a multidrug resistance reversal agent and traditional Chinese medicine. Emphasis was focused the parameters that influence physicochemical characteristics, and then the drug release profile, stability, cytotoxicity and drug resistance reversal effect of the lipid-polymer hybrid nanoparticles (LPNs) were investigated. It was found that various formulation parameters affected NP size, drug loading (DL) and release characteristics. Hydrophilic 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-carboxy(polyethylene glycol)2000 increased the ζ potential and thus the stability of the NPs, but also enlarged their diameter. The amount of PSO influenced their DL and encapsulation efficiency, but did not show any effect on drug release kinetics. Next, the stability of the LPNs in different media and their storage characteristics were assessed. Finally, the cytotoxicity and multidrug resistance reversal effect was studied in the K562 and HepG2 cell lines. The analysis of half maximal inhibitory concentration values demonstrated that combination therapy with doxorubicin (DOX) and PSO-loaded LPNs (P-LPNs) was 14- and 23-fold more effective than a single-dose DOX treatment in resistant K562 and HepG2 cells, respectively, and 2.2- and 2.1-fold more effective than a single-dose combination regimen of DOX and PSO in solution, respectively. These data indicate that the LPNs have superior properties compared with a combination therapy in solution.

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