Identification and functional characterization of the siRNA pathway in Taenia crassiceps by silencing Enolase A

Julio Guerrero-Hernández, Raúl J. Bobes, Martín García-Varela, Alejandro Castellanos-Gonzalez, Juan P. Laclette

    Research output: Contribution to journalArticlepeer-review

    1 Scopus citations

    Abstract

    A gene silencing procedure on cysticerci of the taeniid cestode Taenia crassiceps is described. This is the first time this technique is reported in this species that is widely used as an animal model for human cysticercosis. Genome database searches were performed in order to find out if relevant genes involved in gene silencing and non-coding RNA processing, Argonaute and Dicer (AGO and Dcr) are present in T. crassiceps. We found three AGO and two Dcr orthologues that were designed TcAGO1, Tc2 and Tc3, as well as TcDcr1 and TcDcr2. In order to elucidate the evolutionary relationships of T. crassiceps TcAGO and TcDcr genes, separate phylogenetic analyses were carried out for each, including AGO and Dcr orthologues of other 20 platyhelminthes. Our findings showed a close phylogenetic relationship of TcAGO and TcDcr with those previously described for Echinococcus spp. Our RT-PCR studies demonstrated expression of all TcAGO and TcDcr orthologues. Our results show that the gene silencing machinery in T. crassiceps is functionally active by inducing silencing of TcEnoA (∼90%). These results clearly show that gene silencing using siRNAs can be used as a molecular methodology to study gene function in taeniid cestodes.

    Original languageEnglish (US)
    Article number106197
    JournalActa Tropica
    Volume225
    DOIs
    StatePublished - Jan 2022

    Keywords

    • Dicer and Argonaute
    • Enolase
    • Gene silencing
    • Glycolysis and Krebs cycle
    • Taenia crassiceps
    • siRNA

    ASJC Scopus subject areas

    • Parasitology
    • veterinary (miscalleneous)
    • Insect Science
    • Infectious Diseases

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