Abstract
To determine the function of miR-206 in epilepsy. Epileptic rat model was established by intra-amygdala injection of kainic acid (KA). Expression levels of miR-206, C–C Motif Chemokine Ligand 2 (CCL2) and interleukin-1β (Il-1β) in hippocampus tissues was measured by reverse transcription-quantitative PCR (RT-qPCR) and western blot. Dual luciferase reporter assay was performed to determine the binding of miR-206 to 3′ untranslated region (UTR) of CCL2. Finally, brain waves were recorded and Hematoxylin and eosin (HE) staining and Nissl’s staining were performed on the epileptic rat injected with LPS, miR-206 agomir, adeno-associated virus (AAV) expressed CCL2 alone or in combination. Expression of miR-206 was specially decreased in hippocampus tissues compared to cortex in response to KA induced pathologic brain activity. Enforced expression of miR-206 by injection miR-206 agomir not only decreased seizure activity, but also protected KA-induced neuronal loss. And enforced expression of miR-206 suppressed increase of C–C Motif Chemokine Ligand 2 (CCL2) and interleukin-1β (Il-1β) which were induced by injection of KA or KA combined with lipopolysaccharide (LPS). Further more, results of dual luciferase reporter assay confirmed CCL2 was a target of miR-206. Finally, co-injection adeno-associated virus (AAV) expressed CCL2 with miR-206 agomir abolished the function of miR-206 agomir. Taken together, our results showed that expression of miR-206 could inhibit seizure-induced brain injury by targeting CCL2. Our results showed that expression of miR-206 could inhibit seizure-induced brain injury by targeting CCL2.
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Wu, Z., Liu, Y., Huang, J. et al. MiR-206 inhibits epilepsy and seizure-induced brain injury by targeting CCL2. Cytotechnology 71, 809–818 (2019). https://doi.org/10.1007/s10616-019-00324-3
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DOI: https://doi.org/10.1007/s10616-019-00324-3