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To screen the polypeptides specifically binding to human large intestinal cancer LoVo cells from a phage-displayed peptide library for potential use as targeting vectors for large intestinal cancer therapy. With the LoVo cells as the target cells and human normal large intestinal mucosal epithelial cells as the absorber cells for subtraction biopanning from a c7c phage-display peptide library, the positive phage clones were identified by enzyme-linked immunosorbent assay (ELISA) and immunofluorescence detection. The amino acid sequences of the identified peptides were deduced by DNA sequencing. After 3 rounds of screening, 5 positive phage clones showing specific binding to LoVo cells and containing conserved motif RPMP were obtained from the 20 randomly selected clones. Specific peptide against large intestinal cancer cells can be obtained from a phage-display peptide library for use as potential vectors for targeting therapy of large intestinal cancer.


Kang-Xiong Liao, Xue-Qing Yao, Cheng-Tang Wu, Feng Lin, Wu-Lin Wu, Sui-de Zeng, Yu-Qi Luo, Shang-Tong Lei. Screening peptides binding specifically to large intestinal cancer LoVo cells from phage random peptide library]. Nan fang yi ke da xue xue bao = Journal of Southern Medical University. 2008 Jun;28(6):986-90

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PMID: 18583245

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