Abstract
Background: PEGylation of stealth liposomes elevates their stability and prolongs plasma half-life. Stealth liposomes modified with targeting ligands are expected to be ideal drug delivery carriers.
Objective: To encapsulate docetaxel in tbFGF (truncated basic fibroblast growth factor)-functionalized liposomes with mPEG2000-VE (d-α-tocopheryl polyethylene glycol succinate, TPGS2K) and measure their antitumor effects in vitro and in vivo.
Methods: TPGS2K and COOH-PEG2000-VE were synthesized, and tbFGF was conjugated to COOH-PEG2000-VE to prepare tbFGF-PEG2000-VE. Then, tbFGF-functionalized liposomes (DTX-tbFGF-LPs) were prepared by inserting tbFGF-PEG2000-VE into docetaxel liposomes comprising TPGS2K (DTX-PEG-LPs). The stabilities and drug release profiles of the formulation were evaluated. P-glycoprotein (P-gp) inhibition was measured by ATPase assay. MTT and cell uptake were measured with B16 cells. A B16 C57BL/6 mouse model was used to evaluate in vivo antitumor efficacy.
Results: Both DTX-PEG-LPs and DTX-tbFGF-LPs exhibited good stability and sustained drug release. MTT, flow cytometry, and fluorescence microscopy of B16 cells revealed higher antitumor activity and more efficient cell uptake for DTX-tbFGF-LPs compared with DTX-PEG-LPs and DTX-LPs. The P-gp ATPase assay showed that both PEG-LP and tbFGF-PEG-LP formulations inhibited P-gp pump activity in vitro. DTX-tbFGF-LPs had the highest antitumor efficacy and lowest toxicity in vivo.
Conclusion: Truncated basic fibroblast growth factor-functionalized liposomes with TPGS2K as drug delivery nanocarriers were effective chemotherapy agents targeting FGFR-overexpressing tumors.
Keywords: Truncated basic human fibroblast growth factor, d-α-tocopheryl polyethylene 2000 glycol succinate, docetaxel, liposome, antitumor, P-gp pump.
[http://dx.doi.org/10.1248/bpb.b12-01102] [PMID: 23649331]
[http://dx.doi.org/10.1158/1078-0432.CCR-05-1895] [PMID: 16322279]
[http://dx.doi.org/10.1016/j.pharmthera.2006.05.006] [PMID: 16815554]
[http://dx.doi.org/10.1016/j.jconrel.2011.10.005] [PMID: 22020381]
[http://dx.doi.org/10.1016/j.jconrel.2010.11.002] [PMID: 21095210]
[http://dx.doi.org/10.3389/fimmu.2017.00416] [PMID: 28428790]
[http://dx.doi.org/10.1016/j.jconrel.2010.01.006] [PMID: 20074595]
[http://dx.doi.org/10.1016/S0169-409X(96)00476-0]
[http://dx.doi.org/10.1016/j.ejpb.2013.07.002] [PMID: 23872180]
[http://dx.doi.org/10.2174/1381612821666150115144003] [PMID: 25594410]
[http://dx.doi.org/10.1016/j.jconrel.2010.08.027] [PMID: 20797419]
[http://dx.doi.org/10.1038/nrd1632] [PMID: 15688077]
[http://dx.doi.org/10.1016/j.biomaterials.2012.03.046] [PMID: 22498300]
[http://dx.doi.org/10.1016/j.biomaterials.2011.02.022] [PMID: 21396707]
[http://dx.doi.org/10.4161/cbt.10.3.12421] [PMID: 20543584]
[http://dx.doi.org/10.1016/j.jconrel.2007.01.018] [PMID: 17467100]
[http://dx.doi.org/10.1080/10611860600849498] [PMID: 17050120]
[http://dx.doi.org/10.1016/j.addr.2012.09.033] [PMID: 15350294]
[http://dx.doi.org/10.1074/jbc.M300880200] [PMID: 12651849]
[http://dx.doi.org/10.1016/j.jconrel.2010.03.007] [PMID: 20307599]
[http://dx.doi.org/10.1016/j.ijpharm.2010.04.018] [PMID: 20416367]
[http://dx.doi.org/10.2147/IJN.S32817] [PMID: 22923988]
[http://dx.doi.org/10.1016/j.ijpharm.2011.01.042] [PMID: 21277964]
[http://dx.doi.org/10.1088/1748-6041/5/6/065006] [PMID: 20966535]
[http://dx.doi.org/10.1016/j.colsurfb.2007.11.019] [PMID: 18295461]
[http://dx.doi.org/10.1002/pola.26265]
[http://dx.doi.org/10.1016/S0378-5173(99)00092-7] [PMID: 10425350]
[http://dx.doi.org/10.1016/S0168-3659(03)00271-2] [PMID: 12932719]
[http://dx.doi.org/10.1002/jps.22534] [PMID: 21387317]
[http://dx.doi.org/10.1016/j.biomaterials.2013.11.086] [PMID: 24360574]
[http://dx.doi.org/10.1016/0022-1759(83)90303-4] [PMID: 6606682]
[http://dx.doi.org/10.1093/abbs/gmp045] [PMID: 19578721]
[http://dx.doi.org/10.1016/j.ijpharm.2011.09.045] [PMID: 22001537]
[http://dx.doi.org/10.1016/S0378-5173(03)00295-3] [PMID: 12927382]
[http://dx.doi.org/10.1007/s11434-016-1039-5]
[http://dx.doi.org/10.1016/j.biomaterials.2014.01.003] [PMID: 24461325]
[http://dx.doi.org/10.1016/j.biomaterials.2009.07.008] [PMID: 19631377]
[http://dx.doi.org/10.2147/IJN.S29827] [PMID: 22848167]
[http://dx.doi.org/10.1158/0008-5472.CAN-04-3216] [PMID: 15753401]
[http://dx.doi.org/10.4161/cbt.7.2.5254] [PMID: 18073525]
[http://dx.doi.org/10.3390/ijms19010195] [PMID: 29315231]
[http://dx.doi.org/10.1080/02652048.2017.1296500] [PMID: 28609225]