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  • Title: [The construction and primary screening of a phage display library of HCV C and E1 genes evolved with an artificial pattern].
    Author: Zhao FT, Jia ZS, Li JG, Wang CY, Wei X, Li GY, Bai XF.
    Journal: Zhonghua Gan Zang Bing Za Zhi; 2006 Sep; 14(9):666-9. PubMed ID: 16995980.
    Abstract:
    OBJECTIVES: To construct and screen a primarily phage display library of HCV C and E1 genes evolved with an artificial pattern. METHODS: Two genes of about 1 kb with different genotypes were evolved by DNA shuffling. The re-assembled HCV C and E1 genes were cloned into a phage vector. After being rescued with helper phage M13KO7, a phage display library was constructed. Then the library was screened with anti-C and E1 McAb. Double-antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) was carried out on twenty individual phage clones selected randomly to detect their binding and reactive activity with high-titer HCV-positive sera. Normal sera were used as controls. RESULTS: The phage display library of HCV C and E1 genes which evolved with an artificial pattern was constructed. Their capacity amounted to 1.64 x 10(6), and 86 percent of the clones contained C and E1 genes. After four rounds of panning, the phage library was specifically enriched. Twelve positive clones were successfully screened. CONCLUSION: The capacity and diversity of the constructed library are enough for screening. The results demonstrate the superiority of the specific binding and reactive activity and affinity of the 12 phage clones from the HCV positive sera.
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