Blood-brain barrier (BBB) dysfunction is presented during traumatic brain injury (TBI) and is dependent upon the activation of the NLRP3/Caspase-1 inflammasome pathway. MicroRNA (miRNA) was proved to inhibit signaling pathway activation by targeting gene expression and we predicated in the database that miR-29a targets to NLRP3. Herein, this study aims to define the regulating role of miR-29a in NLRP3 expression and NLRP3/Caspase-1 inflammasome activation in TBI-induced BBB dysfunction. Our results indicated that miR-29a-5p alleviates TBI-induced the increased permeability of endothelial cell and BBB via suppressing NLRP3 expression and NLRP3/Caspase-1 inflammasome activation, providing a promising strategy for relieving TBI via inhibiting NLRP3/Caspase-1 inflammasome activation.

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This is a list of supplementary files associated with this preprint. Click to download.
Figure S1: miR-29a-3p or miR-29a-5p mimics significantly improved the expression of miR-29a-3p or miR-29a-5p respectively in mouse bEnd.3 cells. *** p < 0.001 compared with miNC.
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Posted 23 Mar, 2021
Posted 23 Mar, 2021
Blood-brain barrier (BBB) dysfunction is presented during traumatic brain injury (TBI) and is dependent upon the activation of the NLRP3/Caspase-1 inflammasome pathway. MicroRNA (miRNA) was proved to inhibit signaling pathway activation by targeting gene expression and we predicated in the database that miR-29a targets to NLRP3. Herein, this study aims to define the regulating role of miR-29a in NLRP3 expression and NLRP3/Caspase-1 inflammasome activation in TBI-induced BBB dysfunction. Our results indicated that miR-29a-5p alleviates TBI-induced the increased permeability of endothelial cell and BBB via suppressing NLRP3 expression and NLRP3/Caspase-1 inflammasome activation, providing a promising strategy for relieving TBI via inhibiting NLRP3/Caspase-1 inflammasome activation.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6
This is a list of supplementary files associated with this preprint. Click to download.
Figure S1: miR-29a-3p or miR-29a-5p mimics significantly improved the expression of miR-29a-3p or miR-29a-5p respectively in mouse bEnd.3 cells. *** p < 0.001 compared with miNC.
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