Haplorchis taichui, Witenberg, 1930: Development of a HAT-RAPD marker for the detection of minute intestinal fluke infection.
Experimental Parasitology(2009)
摘要
Specific primers to determine the presence of an intestinal fluke, Haplorchis taichui, were investigated using the high annealing temperature random amplified polymorphic DNA (HAT-RAPD) PCR, and 18 arbitrary primers (Operon Technologies), to generate different polymorphic DNA profiles. Thirteen kinds of parasites were used to compare fingerprints. A 256bp HAT-RAPD marker, generated from the OPP-11 primer, was found to be H. taichui-specific, and this marker was cloned, transformed, and sequenced. From the sequence data, a pair of primers were designed with Genetyx–MAC ver.11 and indicated as: Hap-t F 5′-GGC CAA CGC AAT CGT CAT CC-3′ and Hap-t R 5′-GCG TCG GGT TTC AGA CAT GG-3′. These specific primers were tested for efficacy and specificity by amplifying them with all 13 parasites DNAs in PCR reaction. A 256bp amplicon was generated, which was shown to have a positive result, only for H. taichui DNA. It revealed no cross-reaction with any of the other tested parasite species. The minimum DNA template, needed for detection by PCR, was 0.1picogram (pg). The successful development of H. taichui-specific primers is expected to be beneficial for epidemiological studies and for prevention and control of these parasitic infections.
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关键词
HAT-RAPD marker,Haplorchis taichui,Specific primers,Detection
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