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Small RNA sequencing reveals new mode of action and potential biomarkers for the mycotoxin Zearalenone

ABSTRACT: Small RNA sequencing reveals new mode of action and potential biomarkers for the mycotoxin Zearalenone

PROVIDER: PRJNA524102 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8618160.fastq.gz	Fastqsanger.gz
	SRR8618170.fastq.gz	Fastqsanger.gz
	SRR8618180.fastq.gz	Fastqsanger.gz
	SRR8618161.fastq.gz	Fastqsanger.gz
	SRR8618171.fastq.gz	Fastqsanger.gz

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Small RNA sequencing reveals new mode of action and potential biomarkers for the mycotoxin Zearalenone

Project description:Purpose: The mycotoxin zearalenone (ZEN) poses a risk to animal health because of its estrogenic effects. Diagnosis of ZEN-induced disorders in animal production remains challenging due to the lack of appropriate non-invasive biomarkers. Thus, we combined untargeted and targeted transcriptomics approaches to investigate the effects of ZEN on the microRNA expression in porcine uterus, jejunum and serum. Methods: twenty-four piglets received either uncontaminated feed (Control) or feed containing 0.17 mg/kg ZEN (ZEN low), 1.46 mg/kg ZEN (ZEN medium) and 4.58 mg/kg ZEN (ZEN high) for 28 days. microRNA from uterus and jejunum tissues were profiled by next-generation small RNA sequencing. Serum microRNA expression was analyzed by RT-qPCR analysis. Results: the microRNA expression in the jejunum remained unaffected, while significant changes in the uterine microRNA profile were observed. Importantly, 14 microRNAs were commonly and in a dose-dependent manner affected in both the ZEN medium and ZEN high group, including microRNAs from the miR-503 cluster. Although the effects in the serum were less pronounced, the receiver operating characteristic analysis revealed that several microRNA ratios were able to discriminate properly between non-exposed and ZEN-exposed pigs (e.g. ssc-miR-135a-5p/ssc-miR-432-5p, ssc-miR-542-3p/ssc-miR-493-3p). Conclusions: This work sheds some new light on the molecular mechanisms of ZEN, and fosters biomarker discovery.

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