Dataset Information

MiR-218-2 regulates cognitive functions in the hippocampus through complement component 3-dependent modulation of synaptic vesicle release.

ABSTRACT: microRNA-218 (miR-218) has been linked to several cognition related neurodegenerative and neuropsychiatric disorders. However, whether miR-218 plays a direct role in cognitive functions remains unknown. Here, using the miR-218 knockout (KO) mouse model and the sponge/overexpression approaches, we showed that miR-218-2 but not miR-218-1 could bidirectionally regulate the contextual and spatial memory in the mice. Furthermore, miR-218-2 deficiency induced deficits in the morphology and presynaptic neurotransmitter release in the hippocampus to impair the long term potentiation. Combining the RNA sequencing analysis and luciferase reporter assay, we identified complement component 3 (C3) as a main target gene of miR-218 in the hippocampus to regulate the presynaptic functions. Finally, we showed that restoring the C3 activity in the miR-218-2 KO mice could rescue the synaptic and learning deficits. Therefore, miR-218-2 played an important role in the cognitive functions of mice through C3, which can be a mechanism for the defective cognition of miR-218 related neuronal disorders.

SUBMITTER: Lu SY

PROVIDER: S-EPMC8040660 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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miR-218-2 regulates cognitive functions in the hippocampus through complement component 3-dependent modulation of synaptic vesicle release.

Lu Si-Yao SY Fu Chong-Lei CL Liang Liang L Yang Bo B Shen Wei W Wang Qiu-Wen QW Chen Yun Y Chen Yan-Fen YF Liu Yao-Nan YN Zhu Lin L Zhao Jieqing J Shi Wei W Mi Shuangli S Yao Jun J

Proceedings of the National Academy of Sciences of the United States of America 20210401 14

microRNA-218 (miR-218) has been linked to several cognition related neurodegenerative and neuropsychiatric disorders. However, whether miR-218 plays a direct role in cognitive functions remains unknown. Here, using the miR-218 knockout (KO) mouse model and the sponge/overexpression approaches, we showed that miR-218-2 but not miR-218-1 could bidirectionally regulate the contextual and spatial memory in the mice. Furthermore, miR-218-2</i ...[more]

PMID: 33782126

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Dataset Information

MiR-218-2 regulates cognitive functions in the hippocampus through complement component 3-dependent modulation of synaptic vesicle release.

Publications

<i>miR</i>-<i>218</i>-<i>2</i> regulates cognitive functions in the hippocampus through complement component 3-dependent modulation of synaptic vesicle release.

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