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This research investigates the mechanisms by which porcine epidemic diarrhea virus evades the innate immune response.

Innate Immune Evasion of Porcine Epidemic Diarrhea Virus Through miRNA‐193a‐5p/IL22/pBD1 Pathway in Intestinal Epithelium

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Findings indicate PEDV alters immune evasion by downregulating miR-193a-5p in intestinal epithelium, implying potential therapeutic targets.

This research investigates the mechanisms by which porcine epidemic diarrhea virus evades the innate immune response.
Isolated PEDV strain FJND 2022 and confirmed infection in intestinal porcine epithelial cells (IPECs).
Evaluated miRNA profiles in exosomes from PEDV-infected IPECs.
Assessed mRNA and protein levels of IL22 and pBD1 after various pre-treatment conditions.
Utilized siRNA for knockdown experiments to indicate miRNA roles.
Identified differential expression of 34 miRNAs in PEDV-infected IPECs.
miR-193a-5P expression was notably reduced, with the corresponding decrease in IL22 and pBD1 levels.
Pre-treatment with miR-193a-5P mimic increased IL22 and pBD1 levels while reducing viral load.
Inhibition of miR-193a-5P led to decreased IL22 and pBD1, and increased viral load.

Feng et al. (2025) studied this question.

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View Full Paper

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Authors

Findings indicate PEDV alters immune evasion by downregulating miR-193a-5p in intestinal epithelium, implying potential therapeutic targets.

This research investigates the mechanisms by which porcine epidemic diarrhea virus evades the innate immune response.
Isolated PEDV strain FJND 2022 and confirmed infection in intestinal porcine epithelial cells (IPECs).
Evaluated miRNA profiles in exosomes from PEDV-infected IPECs.
Assessed mRNA and protein levels of IL22 and pBD1 after various pre-treatment conditions.
Utilized siRNA for knockdown experiments to indicate miRNA roles.
Identified differential expression of 34 miRNAs in PEDV-infected IPECs.
miR-193a-5P expression was notably reduced, with the corresponding decrease in IL22 and pBD1 levels.
Pre-treatment with miR-193a-5P mimic increased IL22 and pBD1 levels while reducing viral load.
Inhibition of miR-193a-5P led to decreased IL22 and pBD1, and increased viral load.

Feng et al. (2025) studied this question.

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