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Synapse stability regulating cerebellar long noncoding RNA (SYNAGE)
- Target
- SYNAGE
- Molecular classification
- Long noncoding RNA (lncRNA), Noncoding transcript
01
Overview
Synapse stability regulating cerebellar long noncoding RNA (SYNAGE) is a cerebellar-enriched lncRNA located adjacent to the Cbln1 gene in mammals. SYNAGE is critical for cerebellar synapse stability, functioning through two main mechanisms: as a sponge for miR-325-3p (regulating Cbln1 expression) in granule cells, and as a scaffold organizing the LRP1-HSP90AA1-PSD-95 complex in Purkinje cell synapses. Knockout of SYNAGE in vivo causes profound cerebellar developmental defects including neuron loss, synapse atrophy, and motor deficits. Overexpression can rescue these phenotypes, making SYNAGE an emerging molecular target for understanding and potentially treating cerebellar dysfunction and neurological disease[2][3][5].
- Other names
- SynageGm2694 (mouse locus)
02
Mechanism of action
Acts as a microRNA sponge for miR-325-3p, regulating mRNA levels of Cbln1; Serves as a scaffold for assembly of synaptic protein complexes, including LRP1-HSP90AA1-PSD-95
03
Biological functions
Regulation of synaptic stabilitySynapse formation and maintenanceTranscriptional regulation (of genes such as Cbln1, a synaptic organizer)Scaffold for synaptic protein complex assembly (LRP1-HSP90AA1-PSD-95 in parallel fiber-Purkinje cell synapses)
04
Disease associations
Neurodevelopmental diseasePotential role in neurodegenerative diseaseOther neurologic disease (due to essential role in cerebellar development and synapse integrity)
05
Safety considerations
Disruption of SYNAGE function leads to severe cerebellar phenotypes in model systems, including cerebellar atrophy, synapse loss, motor dysfunctionTargeting lncRNAs generally carries risk of off-target effects and complex downstream consequences
06
Biomarkers
Potential as a biomarker for cerebellar integrity in research settings
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