Genome-wide characterization of microsatellites and marker development in the carcinogenic liver fluke Clonorchis sinensis

Parasitology Research
Thao T B NguyenBanchob Sripa

Abstract

Clonorchis sinensis is an important carcinogenic human liver fluke endemic in East and Southeast Asia. There are several conventional molecular markers that have been used for identification and genetic diversity; however, no information about microsatellites of this liver fluke is published so far. We here report microsatellite characterization and marker development for a genetic diversity study in C. sinensis, using a genome-wide bioinformatics approach. Based on our search criteria, a total of 256,990 microsatellites (≥12 base pairs) were identified from a genome database of C. sinensis, with hexanucleotide motif being the most abundant (51%) followed by pentanucleotide (18.3%) and trinucleotide (12.7%). The tetranucleotide, dinucleotide, and mononucleotide motifs accounted for 9.75, 7.63, and 0.14%, respectively. The total length of all microsatellites accounts for 0. 72% of 547 Mb of the whole genome size, and the frequency of microsatellites was found to be one microsatellite in every 2.13 kb of DNA. For the di-, tri-, and tetranucleotide, the repeat numbers redundant are six (28%), four (45%), and three (76%), respectively. The ATC repeat is the most abundant microsatellites followed by AT, AAT, and AC, respectively. Wi...Continue Reading

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