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  • Title: [Screening and preliminary identification of mimetic peptides of Plasmodium falciparum-infected erythrocyte membrane surface protein 1].
    Author: Hao WB, Li M, Xu WW, Wang P, Chen BH.
    Journal: Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi; 2005 Dec 30; 23(6):388-91. PubMed ID: 16566201.
    Abstract:
    OBJECTIVE: To screen and identify mimetic peptides of Plasmodium falciparun-infected erythrocyte membrane surface protein 1 in order to explore anti-adhesive agent against cerebral malaria. METHODS: Phage-borne peptide KLYLIAEGSVAA was used as panning targets to select target binders in a disulfide-constrained heptapeptides library. Three rounds of biopanning were carried out and then ELISA and competitive ELISA were used to evaluate the binding character between phage-borne peptides and ICAM-1. The insert DNA sequences of positive clones were determined and their amino acid sequences were deduced. RESULTS: After three-round panning, 22 clones were randomly chosen from the third panning and analyzed. Three clones showed positive interaction with ICAM-1, and two of them possessed the amino acid sequence C-ITAVPVR-C, the other one was C-DIMGGYN-C. These peptides specifically inhibited the binding of 15.2 antibody to ICAM-1 detected by competitive ELISA. CONCLUSION: Two kinds of mimetic peptides of PfEMP-1 have been obtained, which can bind with ICAM-1 specifically.
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