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Construction of a cDNA library from female adult of Toxocara canis, and analysis of EST and immune-related genes expressions.
MedLine Citation:
PMID:  21767535     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Toxocara canis is a widespread intestinal nematode parasite of dogs, which can also cause disease in humans. We employed an expressed sequence tag (EST) strategy in order to study gene-expression including development, digestion and reproduction of T. canis. ESTs provided a rapid way to identify genes, particularly in organisms for which we have very little molecular information. In this study, a cDNA library was constructed from a female adult of T. canis and 215 high-quality ESTs from 5'-ends of the cDNA clones representing 79 unigenes were obtained. The titer of the primary cDNA library was 1.83×10(6)pfu/mL with a recombination rate of 99.33%. Most of the sequences ranged from 300 to 900bp with an average length of 656bp. Cluster analysis of these ESTs allowed identification of 79 unique sequences containing 28 contigs and 51 singletons. BLASTX searches revealed that 18 unigenes (22.78% of the total) or 70 ESTs (32.56% of the total) were novel genes that had no significant matches to any protein sequences in the public databases. The rest of the 61 unigenes (77.22% of the total) or 145 ESTs (67.44% of the total) were closely matched to the known genes or sequences deposited in the public databases. These genes were classified into seven groups based on their known or putative biological functions. We also confirmed the gene expression patterns of several immune-related genes using RT-PCR examination. This work will provide a valuable resource for the further investigations in the stage-, sex- and tissue-specific gene transcription or expression.
Authors:
Rongqiong Zhou; Qingyou Xia; Hancheng Huang; Min Lai; Zhenxin Wang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-15
Journal Detail:
Title:  Experimental parasitology     Volume:  -     ISSN:  1090-2449     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-7-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370713     Medline TA:  Exp Parasitol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011. Published by Elsevier Inc.
Affiliation:
Department of Veterinary Medicine, Rongchang Campus, Southwest University, Chongqing 402460, PR China; Institute of Sericulture and Systems Biology, Southwest University, Chongqing 400715, PR China.
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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