title: Tailor-Made pH-Responsive Poly(choline phosphate) Prodrug as a Drug Delivery System for Rapid Cellular Internalization.
abstract: Rapid cellular uptake and efficient drug release in tumor cells are two of the major challenges for cancer therapy. Herein, we designed and synthesized a novel pH-responsive polymer-drug conjugate system poly(2-(methacryloyloxy)ethyl choline phosphate)-b-poly(2-methoxy-2-oxoethyl methacrylate-hydrazide-doxorubicin) (PCP-Dox) to overcome these two challenges simultaneously. It has been proved that PCP-Dox can be easily and rapidly internalized by various cancer cells due to the strong interaction between multivalent choline phosphate (CP) groups and cell membranes. Furthermore, Dox, linked to the polymer carrier via acid-labile hydrazone bond, can be released from carriers due to the increased acidity in lysosome/endosome (pH 5.0-5.5) after the polymer prodrug was internalized into the cancer cells. The cell viability assay demonstrated that this novel polymer prodrug has shown enhanced cytotoxicity in various cancer cells, indicating its great potential as a new drug delivery system for cancer therapy.
authors.affiliation: The Polymer Composites Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China.|University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
authors.forename: Wenliang
authors.initials: W
authors.lastname: Wang
authors.affiliation: The Polymer Composites Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China.
authors.forename: Bo
authors.initials: B
authors.lastname: Wang
authors.affiliation: The Polymer Composites Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China.
authors.forename: Xiaojing
authors.initials: X
authors.lastname: Ma
authors.affiliation: The Polymer Composites Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China.
authors.forename: Sanrong
authors.initials: S
authors.lastname: Liu
authors.affiliation: The Polymer Composites Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China.
authors.forename: Xudong
authors.initials: X
authors.lastname: Shang
authors.affiliation: The Polymer Composites Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, People's Republic of China.|University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
authors.forename: Xifei
authors.initials: X
authors.lastname: Yu
mesh_terms: D000072283:A549 Cells; D002470:Cell Survival / Q000187:drug effects; D004317:Doxorubicin / Q000737:chemistry / Q000494:pharmacology*; D004337:Drug Carriers; D016503:Drug Delivery Systems; D056945:Hep G2 Cells; D006801:Humans; D006863:Hydrogen-Ion Concentration; D061986:MCF-7 Cells; D053758:Nanoparticles / Q000008:administration & dosage / Q000737:chemistry; D009369:Neoplasms / Q000188:drug therapy*; D010767:Phosphorylcholine / Q000031:analogs & derivatives* / Q000737:chemistry; D011108:Polymers / Q000008:administration & dosage* / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry*; D011355:Prodrugs / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D004337:Drug Carriers; D011108:Polymers; D011109:Polymethacrylic Acids; D011355:Prodrugs; C115766:poly(2-methacryloyloxyethyl-phosphorylcholine); D010767:Phosphorylcholine; D004317:Doxorubicin