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bioRxiv · 10.1101/2025.07.31.668014

Loss of miR-9-2 Causes Cerebral Hemorrhage and Hydrocephalus by Widespread Disruption of Cell-Type-Specific Neurodevelopmental Gene Networks.

Fregoso, S. P.·Atapattu, M.·Callies, L.·Monet, D.·Leonardson, A.·Clark, L.·Xu, S.·Cherry, T. J.
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Abstract

MIR-9-2 is a broadly and highly expressed microRNA in the developing brain and is frequently deleted in 5q14.3 Microdeletion Syndrome, a rare but severe neurodevelopmental disorder. Despite this, little attention has been paid to the unique contributions of MIR-9-2 to neurodevelopment and disease. We find that deletion of this microRNA leads to embryonic cerebral hemorrhages and severe hydrocephalus, while disrupting gene networks across a wide range of cell types in the developing brain, thus revealing underappreciated and non-redundant molecular, cellular, and system-wide functions for MIR-9-2 in neurodevelopment.

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Fregoso, S. P., Atapattu, M., Callies, L., Monet, D., Leonardson, A., Clark, L., Xu, S., Cherry, T. J.. 2025-08-01. Loss of miR-9-2 Causes Cerebral Hemorrhage and Hydrocephalus by Widespread Disruption of Cell-Type-Specific Neurodevelopmental Gene Networks.. https://doi.org/10.1101/2025.07.31.668014

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