ArticleFrontiers in cellular neuroscience2026
miR-19a-3p and miR-19b-3p repress Nurr1 and Nur77 to promote microglial inflammation after spinal cord injury.
Article in Frontiers in cellular neuroscience, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Spinal cord injury (SCI)-induced neuropathic pain affects up to 60% of individuals with SCI and is closely linked to microglia-driven neuroinflammation. Neuroinflammatory processes after SCI are major contributors to the development and persistence of chronic pain. MicroRNAs (miRNAs) have emerged as regulators of neuroinflammation. There are higher levels of circulating miR-19a and miR-19b in persons living with SCI with neuropathic pain compared to those with no pain. These miRNAs are associated with altered the neuroprotective genes Nurr1 and Nur77. Methods: Primary microglia cultures and a rat spinal cord injury model were used to investigate the regulatory effects of miR-19a and miR-19b on Nurr1 and Nur77 expression. Results: Our study shows that miR-19a and miR-19b and their binding sites in Nurr1's 3' UTR are highly conserved across vertebrates, suggesting functional importance. Through Conclusion: These findings support a model in which miR-19a and miR-19b contribute to microglia-driven neuroinflammation after SCI and highlight their potential as therapeutic targets to reduce neuropathic pain.
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