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The functional role of miRNAs in inflammatory pathways associated with intestinal epithelial tight junction barrier regulation in IBD

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29 juin 2022
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Fig. 1

Mechanism of action of miRNA-based drugs in IBD. The left side demonstrates the molecular effect of altered miRNAs’ expression in IBD. The right side shows miRNA-based treatment response. miRNA–microRNA; TJs–tight junctions; IEB–intestinal epithelial barrier
Mechanism of action of miRNA-based drugs in IBD. The left side demonstrates the molecular effect of altered miRNAs’ expression in IBD. The right side shows miRNA-based treatment response. miRNA–microRNA; TJs–tight junctions; IEB–intestinal epithelial barrier

MiRNAs collected in this review with their targets, marked expression in IBD, and altered TJ proteins expression_ The table was divided into in vivo and in vitro examined effects on TJ proteins expression induced by altered miRNA expression; miRNA–microRNA; ZO-1–Zonula occludens-1; CLDN–Claudin; JAM-A–junctional adhesion molecules A; AJ–adherent junction; CD–-Crohn's disease; UC–-ulcerative colitis; IBD–inflammatory bowel disease; PBMCs–peripheral blood mononuclear cells

microRNA Target mRNA Expression in IBD TJ proteins expression associated with miRNA-induced effect Author/year
In vivo observed effects
miRNA-124a Aryl hydrocarbon receptor (AhR) Overexpression in CD tissue ZO-1 ↓, OCLN ↓, JAM-A ↓, CLDN1 ↓ Zhao et al., 2020 [58]
miRNA-31-5p Activin receptor-like type 1 (ALK1) Overexpression in CD tissue CLDN8 ↓, TJP1 ↓, OCLN ↓ Toyonaga et al., 2020 [39]
miRNA-301A B-cell translocation gene 1 (BTG1) Overexpression in PBMCs and tissue in IBD E-cadherin (AJ) ↓ He et al., 2017 [86]
miRNA-200b Myosin light chain kinase (MLCK) and c-JUN Decreased in IBD tissue ZO-1 ↓, OCLN ↓ Shen et al., 2017 [64]
miRNA-21 Claudin 8 (CLDN8) Overexpression in CD tissue CLDN8 ↓ Li et al., 2018 [71]
miRNA-200c-3p Occludin (OCLN) Overexpression in UC tissue OCLN ↓ Rawat et al., 2020 [81]
miRNA-495 Signal transducer and activator of transcription 3 (STAT3) Decreased in UC tissue CLDN1 ↓ Chu et al., 2018 [90]
miRNA-122a Epidermal growth factor receptor (EGFR) Overexpression in IBD tissue CLDN1 ↓, OCLN ↓, Zonulin ↑ Zhang et al., 2017 [92]
miRNA-320a Protein phosphatase 2 (PP2A) and Cell division cycle 42 (Cdc42) Overexpression in serum of active CD JAM-A ↑ Cordes et al., 2016 [106]
miRNA-423-5p CLDN5 Overexpression in UC tissue CLDN5 ↓ Wang et al., 2020 [77]
In vitro observed effects
miRNA-185-3p Myosin light chain kinase (MLCK) Decreased in IBD tissue ZO-1 ↓, OCLN ↓ Ma et al., 2019 [63]
miRNA-23a Tumor necrosis factor alpha inhibitor protein 3 (TNFAIP3) Overexpression in CD tissue OCLN destabilization Felwick et al., 2020 [33]
miRNA-675-5p Vitamin D receptor (VDR) Overexpression in UC tissue ZO-1 ↓, OCLN ↓ Chen et al., 2016 [52]
miRNA-375 Toll-like receptor 4 (TLR4) Decreased in IBD tissue ZO-1 ↓, OCLN ↓ Wu et al., 2019 [98]
miRNA-223 Claudin 8 (CLDN8) Overexpression in IBD tissue CLDN8 ↓ Wang et al., 2016 [68]