DataSet: Ascaridia galli

Contents

Dataset

Study

PRJEB20558 (ENA Accession)

Name 

RNA-Seq of the nematode Ascaridia galli exposed to flubendazole against an untreated control. 

Description 

The aim of this study was to investigate the response in gene expression before and after exposure to the Benzimidazoles drug flubendazole in adult female Ascaridia galli worms. The nematode Ascaridia galli (order Ascaridida) is an economically important intestinal parasite responsible for increased food consumption, reduced performance, and mortality in commercial poultry production. Parasite control relies on the repeated use of dewormers (anthelmintics). Benzimidazoles are currently the only anthelmintic registered against A. galli in the EU and there is an obvious risk that overuse of one drug class may lead to resistance. The worms were collected from a commercial laying hen farm before and on day three during a treatment period of 7 days with flubendazole. 

Instrument model

Illumina HiSeq 2500

Experimental design

Run

Experimental condition

Sequencing

File Size

Library Size

Read Length

ERR1948631

Control

Paired-End

2.2/2.1 GB

27602050

125

ERR1948632

Control

Paired-End

2.7/2.8 GB

36384057

125

ERR1948633

Control

Paired-End

2.1/2.1 GB

27772613

125

ERR1948634

Treatment (flubendazole)

Paired-End

2.2/2.2 GB

28640634

125

ERR1948635

Treatment (flubendazole)

Paired-End

1.8/1.8 GB

23538636

125

ERR1948636

Treatment (flubendazole)

Paired-End

2.2/2.2 GB

29046629

125

Total reads: 172.984.619

Publication

Martis, M. M., Tarbiat, B., Tydén, E., Jansson, D. S., & Höglund, J. (2017). RNA-Seq de novo assembly and differential transcriptome analysis of the nematode Ascaridia galli in relation to in vivo exposure to flubendazole. Plos One, 12(11). doi:10.1371/journal.pone.0185182

Abstract

The nematode Ascaridia galli (order Ascaridida) is an economically important intestinal parasite responsible for increased food consumption, reduced performance and elevated mortality in commercial poultry production. This roundworm is an emerging problem in several European countries on farms with laying hens, as a consequence of the recent European Union (EU) ban on conventional battery cages. As infection is associated with the slow development of low levels of acquired protective immunity, parasite control relies on repeated use of dewormers (anthelmintics). Benzimidazoles (BZ) are currently the only anthelmintic registered in the EU for use in controlling Agalli and there is an obvious risk of overuse of one drug class, selecting for resistance. Thus we developed a reference transcriptome of Agalli to investigate the response in gene expression before and after exposure to the BZ drug flubendazole (FLBZ). Transcriptional variations between treated and untreated Agalli showed that transcripts annotated as mitochondrial glutamate dehydrogenase and cytochrome P450 were significantly down-regulated in treated worms, whereas transcripts homologous to heat shock proteins (HSP), catalase, phosphofructokinase, and a multidrug resistance P-glycoprotein (PGP1) were significantly up-regulated in treated worms. Investigation of candidate transcripts responsible for anthelmintic resistance in livestock nematodes led to the identification of several tubulins, including six new isoforms of beta-tubulin, and several ligand-gated ionotropic receptors and ABC-transporters. We discovered several transcripts associated with drug binding and processing genes, but further characterization using a larger set of worms exposed to BZs in functional assays is required to determine how these are involved in drug binding and metabolism.

Use case

Reanalyzing the A. galli transcriptomic response to an anthelmintic drug with Blast2GO.