title: Evaluation of polyethylene glycol-conjugated novel polymeric anti-tumor drug for cancer therapy.
abstract: A novel polymeric prodrug (PXPEG) was prepared to enhance the solubility of an anti-cancer drug, paclitaxel, in aqueous solutions and decrease the cytotoxicity by PEGylation, which means PEG attached to another molecule. In addition, the targeting ligand, transferrin (TF), was modified to PXPEG to enhance the therapeutic efficacy. The targeting ligand-modified PXPEG (TFPXPEG) was examined by (1)H-NMR to confirm the successful synthesis. The synthesized TFPXPEG had better solubility than the free drug against aqueous solution. The particle size of TFPXPEG was approximately 197.2nm and it had a spherical shape. The MTT assay showed that the anti-tumor efficiency of TFPXPEG was better than that of TF-unmodified PXPEG. In the KB tumor-bearing mouse model, the tumor volume of TFPXPEG treated groups was decreased dramatically by more than 2 fold or 3 fold compared to the PBS or PXPEG treated groups. The in vitro and in vivo evaluation showed that TFPXPEG had better efficacy than that of PXPEG due to the targeting effect of targeting ligands, such as TF.
authors.affiliation: Department of Polymer Science and Engineering, Sunchon National University, 255 Juang-ro, Suncheon 540-950, Jeollanam-do, Republic of Korea.
authors.forename: Joung-Pyo
authors.initials: JP
authors.lastname: Nam
authors.affiliation: Department of Polymer Science and Engineering, Sunchon National University, 255 Juang-ro, Suncheon 540-950, Jeollanam-do, Republic of Korea.
authors.forename: Jun-Kyu
authors.initials: JK
authors.lastname: Park
authors.affiliation: Department of Polymer Science and Engineering, Sunchon National University, 255 Juang-ro, Suncheon 540-950, Jeollanam-do, Republic of Korea.
authors.forename: Dong-Hee
authors.initials: DH
authors.lastname: Son
authors.affiliation: Department of Polymer Science and Engineering, Sunchon National University, 255 Juang-ro, Suncheon 540-950, Jeollanam-do, Republic of Korea.
authors.forename: Tae-Hun
authors.initials: TH
authors.lastname: Kim
authors.affiliation: Department of Polymer Science and Engineering, Sunchon National University, 255 Juang-ro, Suncheon 540-950, Jeollanam-do, Republic of Korea.
authors.forename: Sun-Jeong
authors.initials: SJ
authors.lastname: Park
authors.affiliation: Department of Polymer Science and Engineering, Sunchon National University, 255 Juang-ro, Suncheon 540-950, Jeollanam-do, Republic of Korea.
authors.forename: Seong-Cheol
authors.initials: SC
authors.lastname: Park
authors.affiliation: Department of Polymer Science and Engineering, Sunchon National University, 255 Juang-ro, Suncheon 540-950, Jeollanam-do, Republic of Korea.
authors.forename: Changyong
authors.initials: C
authors.lastname: Choi
authors.affiliation: Department of Polymer Science and Engineering, Sunchon National University, 255 Juang-ro, Suncheon 540-950, Jeollanam-do, Republic of Korea.
authors.forename: Mi-Kyeong
authors.initials: MK
authors.lastname: Jang
authors.affiliation: Department of Polymer Science and Engineering, Sunchon National University, 255 Juang-ro, Suncheon 540-950, Jeollanam-do, Republic of Korea. Electronic address: jwnah@sunchon.ac.kr.
authors.forename: Jae-Woon
authors.initials: JW
authors.lastname: Nah
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000494:pharmacology* / Q000627:therapeutic use*; D016923:Cell Death / Q000187:drug effects; D002460:Cell Line; D016503:Drug Delivery Systems; D006801:Humans; D051379:Mice; D009369:Neoplasms / Q000188:drug therapy* / Q000473:pathology; D010316:Particle Size; D011092:Polyethylene Glycols / Q000138:chemical synthesis / Q000737:chemistry*; D011355:Prodrugs / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D066244:Proton Magnetic Resonance Spectroscopy; D012995:Solubility; D012996:Solutions
chemical_list: D000970:Antineoplastic Agents; D011355:Prodrugs; D012996:Solutions; D011092:Polyethylene Glycols
keywords: PEG; Paclitaxel; Polymeric prodrugs; Transferrin