In vitro panning of a targeting peptide to hepatocarcinoma from a phage display peptide library.

School of Life Sciences, East China Normal University, Shanghai, PR China.
Biochemical and Biophysical Research Communications (Impact Factor: 2.28). 05/2006; 342(3):956-62. DOI: 10.1016/j.bbrc.2006.02.050
Source: PubMed

ABSTRACT Phage display technology has been used as a powerful tool in the discovery of ligands specific to receptor(s) on the surface of a cancer cell and could also impact clinical issues including functional diagnosis and cell-specific drug delivery. After three rounds of in vitro panning and two rounds of reverse absorption, a group of phages capable of addressing BEL-7402 enormously were obtained for further analysis. Through a cell-based ELISA, immunofluorescence, FACS, and in vivo binding study, WP05 (sequence TACHQHVRMVRP) was demonstrated to be the most effective peptide in targeting four kinds of liver cancer cell lines (BEL-7402, BEL-7404, SMMC-7721, and HepG2), but not the normal liver cell line HL-7702. In conclusion, the peptide WP05 which was screened by in vitro phage display technology was proved to be a targeting peptide to several common hepatocellular carcinoma cell lines.

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