Short-chain dehydrogenases in Haemonchus contortus: changes during life cycle and in relation to drug-resistance

Author:

Štěrbová Karolína,Rychlá Nikola,Matoušková Petra,Skálová Lenka,Raisová Stuchlíková LucieORCID

Abstract

AbstractShort-chain dehydrogenases/reductases (SDRs) regulate the activities of many hormones and other signaling molecules and participate in the deactivation of various carbonyl-bearing xenobiotics. Nevertheless, knowledge about these important enzymes in helminths remains limited. The aim of our study was to characterize the SDR superfamily in the parasitic nematodeHaemonchus contortus. Genome localization of SDRs was explored, and phylogenetic analysis in comparison with SDRs from free-living nematodeCaenorhabditis elegansand the domestic sheep (Ovis aries, a typical host ofH. contortus) was constructed. The expression profile of selected SDRs during the life cycle along with differences between the drug-susceptible and drug-resistant strains, were also studied. Genome sequencing enabled the identification of 46 members of the SDR family inH. contortus. A number of genes have no orthologue in the sheep genome. In all developmental stages ofH. contortus, SDR1, SDR3, SDR5, SDR6, SDR14, and SDR18 genes were the most expressed, although in individual stages, huge differences in expression levels were observed. A comparison of SDRs expression between the drug-susceptible and drug-resistant strains ofH. contortusrevealed several SDRs with changed expression in the resistant strain. Specifically, SDR1, SDR12, SDR13, SDR16 are SDR candidates related to drug-resistance, as the expression of these SDRs is consistently increased in most stages of the drug-resistantH. contortus. These findings revealing several SDR enzymes ofH. contortuswarrant further investigation.

Funder

Grantová Agentura České Republiky

Grantová Agentura, Univerzita Karlova

Univerzita Karlova v Praze

Ministerstvo Školství, Mládeže a Tělovýchovy

Publisher

Springer Science and Business Media LLC

Subject

General Veterinary

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