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Identification of microRNAs in bovine faeces and their potential as biomarkers of Johne’s Disease
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Identification of microRNAs in bovine faeces and their potential as biomarkers of Johne’s Disease
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Journal Article
Identification of microRNAs in bovine faeces and their potential as biomarkers of Johne’s Disease
2020
Overview
Extracellular microRNAs (miRNAs) are detectable in the peripheral blood and have been touted as potential biomarkers for a range of maladies. The presence and biomarker potential of miRNAs in other biofluids has been less thoroughly explored, particularly in the veterinary realm. Faecal miRNAs are a case in point; while they have been identified largely in rodents and humans, they have not been reported in cattle but may have prognostic or diagnostic value for Johne’s Disease (JD) in cattle, a chronic granulomatous inflammation of the ileum caused by
Mycobacterium avium
subspecies
paratuberculosis
(MAP). The aim of this study was thus to characterise the bovine faecal miRNome and to determine the utility of these transcripts as biomarkers for JD. Real-time PCR arrays consisting of 752 miRNA targets, optimised for detection of human miRNA, were used to screen RNA purified from faecal samples obtained from confirmed JD clinical cases vs. healthy controls. Two hundred and fifty-eight miRNAs were detected in bovine faeces, three of which are potentially novel orthologs of known human miRNAs. Differential abundance of three miRNA was evident in animals with clinical JD as compared to healthy controls. Our study has therefore identified a variety of miRNAs in bovine faeces and has demonstrated their utility in differentiating healthy animals from those with late-stage JD, providing potential biomarkers for MAP infection and disease progression.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
/ 38/71
/ Animals
/ Cattle
/ Feces
/ Host-Pathogen Interactions - genetics
/ Humanities and Social Sciences
/ Ileum
/ Intestinal Mucosa - pathology
/ miRNA
/ Mycobacterium avium subsp. paratuberculosis - isolation & purification
/ Paratuberculosis - diagnosis
/ Paratuberculosis - microbiology
/ Paratuberculosis - pathology
/ Science
