Abstract
Purpose. The aim of the study was to prepare stealth and remoteloading proliposome (SRP-L) to carry doxorubicin (DXR) and evaluatethe pharmacokinetics, acute toxicity, and anticancer effect of DXRcarried with SRP-L.
Methods. SRP-L was transparent solution. When SRP-L was injectedinto 0.9% NaCl aqueous solution containing DXR, liposomes formedand automatically loaded DXR (SRP-L-DXR). The long circulation ofSRP-L-DXR was evaluated using the pharmacokinetics ofSRP-L-DXR, cardiolipin liposomal DXR (CL-DXR) and free DXR (F-DXR).The acute toxicity and anticancer effect of SRP-L-DXR were evaluatedin C57BL/6 mice and murine hystocytoma M5076 tumor model.
Results. The average diameter of SRP-L-DXR in pure water was112.9 ± 8.6 (nm) and the encapsulation efficiency of SRP-L-DXRwas 96.5 ± 0.2% in pure water, 95.5 ± 0.1% in 5% glucose and 98.01± 0.6% in 0.9% NaCl. The plasma concentration of SRP-L-DXR wasmuch higher than those of F-DXR and CL-DXR. Compared with thatof F-DXR, the SRP-L-DXR had lower acute toxicity and its anticancereffects depended upon the therapeutic treatment.
Conclusions. A novel proliposome (SRP-L) was developed, whichcould automatically load DXR and form SRP-L-DXR with excellentcharacteristics. SRP-L-DXR had lower acute toxicity but was notalways more effective for the treatment of the ascitic M5076 thanF-DXR.
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Wang, J.P., Maitani, Y., Takayama, K. et al. Pharmacokinetics and Antitumor Effect of Doxorubicin Carried by Stealth and Remote Loading Proliposome. Pharm Res 17, 782–787 (2000). https://doi.org/10.1023/A:1007543805947
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DOI: https://doi.org/10.1023/A:1007543805947