Résumé
Objective: Developed the core-matched nanoemulsions (CMNEs) to co-delivery paclitaxel-oleic acid (PTX-OA) prodrug and Brucea javanica oil (BJO) for increasing the antitumor effect. Methods: Antitumor effects and mechanism of PTX-OA/BJO CMNEs that the combination therapy which based on core-matched technology (CMT) were evaluated in vitro and in vivo. Results: The PTX-OA/BJO CMNEs were of nanoscale particle size (108.7 ± 2.3) nm and with entrapment efficiency of >95%. The PTX-OA/BJO CMNEs displayed concentration and time-dependent cytotoxicity against HepG-2 cells and increased G2/M phase block. More importantly, a significant reduction of the tumor volume with no obvious toxicity was observed in nude mice model following administration of PTX-OA/BJO CMNEs compared with the control treated with normal saline (P < 0.05), which suggested the excellent efficacy in vivo. It was further found that the enhanced effectiveness of PTX-OA/BJO CMNEs were associated with the ability of inducing apoptosis of the tumor cells, as well as obviously inhibiting tumor cell proliferation and the activity of TOPO Ⅱ. Conclusion: Co-encapsulation of two drugs with different mechanisms allows simultaneous interruption of diverse anticancer pathways, resulting in increased therapeutic response and lower toxicity.
Résumé
Twenty-three temperate China species of Lachnum, Lachnum abnorme, L. angustum, L. brevipilosum, L. calosporum, L. calyculiforme, L. carneolum, L. ciliare, L. controversum, L. flavidulum, L. cf. fushanese, L. indicum, L. kumaonicum, L. lushanese, L. minutum, L. montanum, L. cf. pteridophyllum, L. pygmaeum, L. sclerotii var. sclerotii, L. sclerotii var. sichuanense, L. subpygmeaum, L. tenuissimum, L. virgineum and L. willisii are reported, whose main characteristics are given in a formula of the described species, some of which are discussed below.