Transcriptome analysis of Echinococcus granulosus sensu stricto protoscoleces reveals differences in immune modulation gene expression between cysts found in cattle and sheep

Ismael Pereira, Christian Hidalgo, Caroll Stoore, María Soledad Baquedano, Carolina Cabezas, Macarena Bastías, Aníbal Riveros, Claudio Meneses, Martín Cancela, Henrique Bunselmeyer Ferreira, Leonardo Sáenz, Rodolfo Paredes

Research output: Contribution to journalArticlepeer-review

Abstract

Cystic Echinococcosis (CE), a zoonotic parasitic disease, is caused by the cestode Echinococcus granulosus sensu lato. CE inflicts severe damage in cattle, sheep, and human hosts worldwide. Fertile CE cysts are characterized by the presence of viable protoscoleces. These parasite forms are studied with minimal contamination with host molecules. Hosts, cattle and sheep, show differences in their CE cyst fertility. The effect of the host in protoscolex transcriptome is not known. We genotyped and performed transcriptomic analysis on sheep protoscoleces obtained from liver and lung CE cysts. The transcriptomic data of Echinococcus granulosus sensu stricto protoscoleces from 6 lung CE cysts and 6 liver CE cysts were Collected. For host comparison analysis, 4 raw data files belonging to Echinococcus granulosus sensu stricto protoscoleces from cattle liver CE cysts were obtained from the NCBI SRA database. Principal component and differential expression analysis did not reveal any statistical differences between protoscoleces obtained from liver or lung cysts, either within the same sheep or different sheep hosts. Conversely, there are significant differences between cattle and sheep protoscolex samples. We found differential expression of immune-related genes. In cattle, 7 genes were upregulated in protoscoleces from liver cysts. In sheep, 3 genes were upregulated in protoscoleces from liver and lung CE cysts. Noteworthy, are the differential expression of antigen B, tegument antigen, and arginase-2 in samples obtained from sheep CE cysts, and basigin in samples from cattle CE cysts. These findings suggest that the host species is an important factor involved in the differential expression of immune related genes, which in turn is possibly related to the fertility of Echinococcus granulosus sensu stricto cysts.

Original languageEnglish
Pages (from-to)8
Number of pages1
JournalVeterinary Research
Volume53
Issue number1
DOIs
Publication statusPublished - 28 Jan 2022

Keywords

  • cattle
  • Cystic echinococcosis
  • immune modulation
  • protoscolex
  • RNAseq
  • sheep
  • transcriptomics

ASJC Scopus subject areas

  • veterinary(all)

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