PMID- 34451342 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210831 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 13 IP - 16 DP - 2021 Aug 20 TI - Solubilization of Paclitaxel by Self-Assembled Amphiphilic Phospholipid-Mimetic Polymers with Varied Hydrophobicity. LID - 10.3390/polym13162805 [doi] LID - 2805 AB - 2-Methacryloyloxyethyl phosphorylcholine (MPC) polymers have been used as a coating agent on medical devices and as a carrier in drug delivery systems (DDSs). Paclitaxel (PTX) is a water-insoluble anticancer drug whose solubilizer is necessary for administration. Block and random copolymers composed of hydrophilic MPC and butyl methacrylate, named PMB, show different properties, depending on the polymer sequence and MPC content. In the present study, we used amphiphilic MPC polymers comprising hydrophobic dodecyl methacrylate (DMA). The self-assembling properties and PTX solubilization of random and block poly(MPC-co-DMA)s (rPMDs and bPMDs) with different compositions were examined and compared. rPMDs with high DMA content formed large and relatively loose self-assembled structures, which solubilized PTX. However, bPMDs formed small and compact self-assembled structures with poor PTX solubilization. PTX solubilized by PMB with small and loose self-assembled structures showed efficient drug action, similar to free PTX; however, rPMDs fell short of demonstrating PTX efficiency. Our results suggest that the self-assembling properties and the hydrophobicity of amphiphilic MPC polymers largely affect PTX solubilization as well as drug action, which is required to be controlled by the polymer sequence, as well as the structure and composition of the hydrophobic monomer for efficient DDS. FAU - Kojima, Chie AU - Kojima C AUID- ORCID: 0000-0002-2208-5784 AD - Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan. FAU - Hirose, Tomoka AU - Hirose T AD - Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan. FAU - Katayama, Risa AU - Katayama R AD - Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan. FAU - Matsumoto, Akikazu AU - Matsumoto A AD - Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan. LA - eng PT - Journal Article DEP - 20210820 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC8398084 OTO - NOTNLM OT - MPC polymer OT - anticancer drug OT - drug delivery OT - hydrophobicity OT - polymer sequence OT - solubilization COIS- The authors declare no conflict of interest. EDAT- 2021/08/29 06:00 MHDA- 2021/08/29 06:01 PMCR- 2021/08/20 CRDT- 2021/08/28 01:03 PHST- 2021/07/29 00:00 [received] PHST- 2021/08/12 00:00 [revised] PHST- 2021/08/18 00:00 [accepted] PHST- 2021/08/28 01:03 [entrez] PHST- 2021/08/29 06:00 [pubmed] PHST- 2021/08/29 06:01 [medline] PHST- 2021/08/20 00:00 [pmc-release] AID - polym13162805 [pii] AID - polymers-13-02805 [pii] AID - 10.3390/polym13162805 [doi] PST - epublish SO - Polymers (Basel). 2021 Aug 20;13(16):2805. doi: 10.3390/polym13162805.