PMID- 16120577 OWN - NLM STAT- MEDLINE DCOM- 20081103 LR - 20181201 IS - 0253-9772 (Print) IS - 0253-9772 (Linking) VI - 27 IP - 4 DP - 2005 Jul TI - [Eukaryotic expression and tumor-targeting modification of human mutated-IL-18 fusion gene]. PG - 557-60 AB - Interleukin-18 (IL-18) is a proinflammatory cytokinin. This protein has a role in regulating immune responses and exhibits significant anti- tumor activities. Epidermal growth factor (EGF) is an important growth factor that plays a central role in the regulation of cell cycle and differentiation. It was proposed that a targeted delivery of IL-18 by generation of IL-18-EGF fusion protein might decrease adverse effects and result in enhancing cytotoxic and antitumor activities. In the present study, a fusion protein, consisting of EGFR binding domain fused to human IL18 mature peptide via a linker peptide of (Gly4ser) 3, was constructed and expressed in the insect cell line Sf9 using Bac-to-Bac baculovirus expression system. We showed that the purified recombinant fusion protein induced similar levels of IFN-gamma to that of native IL-18 protein in human PBMC in the presence of ConA. Furthermore, EGF Receptor competitive test in human epithelial cancer A431 cell line showed that EGF- IL18 fusion protein can specifically bind with EGFR by competing with native EGF protein. The results suggested that EGF-IL18 fusion protein could specifically be targeted on tumor cells. The work may provide a new insight into the cytokinin for the tumor treatment. FAU - Lu, Jian-Xin AU - Lu JX AD - Institute of Cellular and Molecular Medicine, Wenzhou Medical College, Wenzhou 325035, China. jx@wz.zj.cn FAU - Peng, Ying AU - Peng Y FAU - Meng, Zhe-Feng AU - Meng ZF LA - chi PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Yi Chuan JT - Yi chuan = Hereditas JID - 9436478 RN - 0 (Interleukin-18) RN - 0 (Recombinant Fusion Proteins) RN - 62229-50-9 (Epidermal Growth Factor) RN - 82115-62-6 (Interferon-gamma) RN - EC 2.7.10.1 (ErbB Receptors) SB - IM MH - Animals MH - Baculoviridae/genetics MH - Binding, Competitive MH - Blotting, Western MH - Cell Line MH - Cell Line, Tumor MH - Drug Delivery Systems MH - Enzyme-Linked Immunosorbent Assay MH - Epidermal Growth Factor/genetics/*metabolism MH - ErbB Receptors/*metabolism MH - Humans MH - Interferon-gamma/metabolism MH - Interleukin-18/genetics/*metabolism MH - Recombinant Fusion Proteins/administration & dosage/genetics/*metabolism MH - Spodoptera EDAT- 2005/08/27 09:00 MHDA- 2008/11/04 09:00 CRDT- 2005/08/27 09:00 PHST- 2005/08/27 09:00 [pubmed] PHST- 2008/11/04 09:00 [medline] PHST- 2005/08/27 09:00 [entrez] AID - 0253-9772(2005)04-0557-04 [pii] PST - ppublish SO - Yi Chuan. 2005 Jul;27(4):557-60.