Abstract
Toxocara canis is a zoonotic parasite with worldwide distribution. ATP-binding cassette (ABC) transporters are integral membrane proteins which involve in a range of biological processes in various organisms. In present study, the full-length coding sequence of abcg-5 gene of T. canis (Tc-abcg-5) was cloned and characterized. A 633 aa polypeptide containing two conserved Walker A and Walker B motifs was predicted from a continuous 1902 nt open reading frame. Quantitative real-time PCR was employed to determine the transcriptional levels of Tc-abcg-5 gene in adult male and female worms, which indicated high mRNA level of Tc-abcg-5 in the reproductive tract of adult female T. canis. Tc-abcg-5 was expressed to produce rabbit polyclonal antiserum against recombinant TcABCG5. Indirect-fluorescence immunohistochemical assays were carried out to detect the tissue distribution of TcABCG5, which showed predominant distribution of TcABCG5 in the uterus (especially in the germ cells) of adult female T. canis. Tissue transcription and expression pattern of Tc-abcg-5 indicated that Tc-abcg-5 might play essential roles in the reproduction of this parasitic nematode.
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This work was funded by National Natural Science Foundation of China (no. 31672541 and 31172313) and Fundamental Research Funds for the Central Universities (No. XDJK2016E087).
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Luo, YL., Ma, GX., Luo, YF. et al. Tissue expression pattern of ABCG transporter indicates functional roles in reproduction of Toxocara canis. Parasitol Res 117, 775–782 (2018). https://doi.org/10.1007/s00436-018-5751-8
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DOI: https://doi.org/10.1007/s00436-018-5751-8