The genome and transcriptome of haemonchus contortus, a key model parasite for drug and vaccine discovery

Laing, R. et al. (2013) The genome and transcriptome of haemonchus contortus, a key model parasite for drug and vaccine discovery. Genome Biology, 14(8), R88. (doi: 10.1186/gb-2013-14-8-r88) (PMID:23985316) (PMCID:PMC4054779)

Abstract

<p>Background: The small ruminant parasite Haemonchus contortus is the most widely used parasitic nematode in drug discovery, vaccine development and anthelmintic resistance research. Its remarkable propensity to develop resistance threatens the viability of the sheep industry in many regions of the world and provides a cautionary example of the effect of mass drug administration to control parasitic nematodes. Its phylogenetic position makes it particularly well placed for comparison with the free-living nematode Caenorhabditis elegans and the most economically important parasites of livestock and humans.</p> <p>Results: Here we report the detailed analysis of a draft genome assembly and extensive transcriptomic dataset for H. contortus. This represents the first genome to be published for a strongylid nematode and the most extensive transcriptomic dataset for any parasitic nematode reported to date. We show a general pattern of conservation of genome structure and gene content between H. contortus and C. elegans, but also a dramatic expansion of important parasite gene families. We identify genes involved in parasite-specific pathways such as blood feeding, neurological function, and drug metabolism. In particular, we describe complete gene repertoires for known drug target families, providing the most comprehensive understanding yet of the action of several important anthelmintics. Also, we identify a set of genes enriched in the parasitic stages of the lifecycle and the parasite gut that provide a rich source of vaccine and drug target candidates.</p> <p>Conclusions: The H. contortus genome and transcriptome provides an essential platform for postgenomic research in this and other important strongylid parasites. </p>

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Cotton, Professor James and Devaney, Professor Eileen and Redman, Dr Elizabeth and Johnston, Ms Stephanie and Britton, Professor Collette and Laing, Dr Roz and Gilleard, Professor John and Saunders, Mr Gary
• Authors: Laing, R., Kikuchi, T., Martinelli, A., Tsai, I.J., Beech, R.N., Redman, E., Holroyd, N., Bartley, D.J., Beasley, H., Britton, C., Curran, D., Devaney, E., Gilabert, A., Hunt, M., Jackson, F., Johnston, S.L., Kryukov, I., Li, K., Morrison, A.A., Reid, A.J., Sargison, N., Saunders, G., Wasmuth, J.D., Wolstenholme, A., Berriman, M., Gilleard, J.S., and Cotton, J.A.
• College/School: College of Medical Veterinary and Life Sciences > School of Infection & Immunity; College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine
• Journal Name: Genome Biology
• Publisher: BioMed Central
• ISSN: 1474-760X
• ISSN (Online): 1474-760X
• Copyright Holders: Copyright © 2013 The Authors
• First Published: First published in Genome Biology 14(8):R88
• Publisher Policy: Reproduced under a Creative Commons License