Abstract
Background: Most chemotherapeutic agents are characterized by poor water solubility and non-specific distribution. Polymer-based conjugates are promising strategies for overcoming these limitations.
Objective: This study aims to fabricate a polysaccharide, dextran-based, dual-drug conjugate by covalently grafting docetaxel (DTX) and docosahexaenoic acid (DHA) onto the bifunctionalized dextran through a long linker, and to investigate the antitumor efficacy of this conjugate against breast cancer.
Methods: DTX was firstly coupled with DHA and covalently bounded with the bifunctionalized dextran (100 kDa) through a long linker to produce a conjugate dextran-DHA-DTX (termed C-DDD). Cytotoxicity and cellular uptake of this conjugate were measured in vitro. Drug biodistribution and pharmacokinetics were investigated through liquid chromatography/mass spectrometry analysis. The inhibitory effects on tumor growth were evaluated in MCF-7- and 4T1-tumor-bearing mice.
Results: The loading capacity of the C-DDD for DTX was 15.90 (weight/weight). The C-DDD possessed good water solubility and was able to self-assemble into nanoparticles measuring 76.8 ± 5.5 nm. The maximum plasma concentration and area under the curve (0-∞) for the released DTX and total DTX from the C-DDD were significantly enhanced compared with the conventional DTX formulation. The C-DDD selectively accumulated in the tumor, with limited distribution was observed in normal tissues. The C-DDD exhibited greater antitumor activity than the conventional DTX in the triplenegative breast cancer model. Furthermore, the C-DDD nearly eliminated all MCF-7 tumors in nude mice without leading to systemic adverse effects.
Conclusion: This dual-drug C-DDD has the potential to become a candidate for clinical application through the optimization of the linker.
Graphical Abstract
[http://dx.doi.org/10.1016/S1470-2045(05)70094-2] [PMID: 15811618]
[http://dx.doi.org/10.3390/cancers13030400] [PMID: 33499040]
[http://dx.doi.org/10.1016/j.bmc.2007.04.002] [PMID: 17624790]
[http://dx.doi.org/10.1097/CAD.0b013e3280113338] [PMID: 17159596]
[http://dx.doi.org/10.1007/s12016-014-8416-0] [PMID: 24740483]
[http://dx.doi.org/10.1080/17425247.2019.1583644] [PMID: 30773947]
[http://dx.doi.org/10.1021/acs.accounts.9b00228] [PMID: 31424909]
[http://dx.doi.org/10.2147/IJN.S272529] [PMID: 33132699]
[http://dx.doi.org/10.1016/j.jconrel.2020.06.020] [PMID: 32590047]
[http://dx.doi.org/10.1038/s41573-018-0005-0] [PMID: 30542076]
[http://dx.doi.org/10.1007/s10637-021-01081-x] [PMID: 33594602]
[http://dx.doi.org/10.1016/j.carbpol.2021.117999] [PMID: 33910733]
[http://dx.doi.org/10.2217/nnm-2018-0331] [PMID: 30516091]
[http://dx.doi.org/10.1080/21691401.2018.1468340] [PMID: 29726296]
[http://dx.doi.org/10.1016/j.colsurfb.2017.10.048] [PMID: 29100128]
[http://dx.doi.org/10.1016/j.matlet.2019.127114]
[http://dx.doi.org/10.1002/jbm.b.33581] [PMID: 26687579]
[http://dx.doi.org/10.1016/j.jconrel.2016.09.012] [PMID: 27639681]
[http://dx.doi.org/10.1016/j.ijbiomac.2016.03.064] [PMID: 27037052]
[http://dx.doi.org/10.1080/10717544.2020.1797238] [PMID: 32706272]
[http://dx.doi.org/10.1016/j.nano.2015.02.002] [PMID: 25725489]
[http://dx.doi.org/10.1016/j.carbpol.2016.10.028] [PMID: 27987969]
[http://dx.doi.org/10.1016/j.jconrel.2006.10.009] [PMID: 17126446]
[http://dx.doi.org/10.3390/nu12061647] [PMID: 32498320]
[http://dx.doi.org/10.15430/JCP.2017.22.1.1] [PMID: 28382280]
[http://dx.doi.org/10.1002/jcb.29464] [PMID: 31713924]
[http://dx.doi.org/10.1016/j.lfs.2022.120394] [PMID: 35157910]
[PMID: 33415010]
[http://dx.doi.org/10.3390/ijms18081784] [PMID: 28817068]
[http://dx.doi.org/10.3390/ijms18122770] [PMID: 29261109]
[http://dx.doi.org/10.3390/ijms17081257] [PMID: 27527148]
[http://dx.doi.org/10.3390/ijms21144965] [PMID: 32674321]
[http://dx.doi.org/10.1016/j.jnutbio.2022.109018] [PMID: 35489658]
[http://dx.doi.org/10.1016/j.bbalip.2016.01.012] [PMID: 26821209]
[http://dx.doi.org/10.1097/CMR.0b013e3283403ce9] [PMID: 20881508]
[http://dx.doi.org/10.1093/annonc/mdq438] [PMID: 20855467]
[http://dx.doi.org/10.1080/10717544.2021.2018523] [PMID: 34964421]
[http://dx.doi.org/10.1016/j.jcis.2021.04.056] [PMID: 33901847]
[http://dx.doi.org/10.1016/j.nantod.2020.101057]
[http://dx.doi.org/10.1063/5.0130259]
[http://dx.doi.org/10.1039/D2BM00337F] [PMID: 35647736]