Arc Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| ARC Gene | |
|---|---|
| Symbol | ARC |
| Full Name | Activity-Regulated Cytoskeleton-Associated Protein |
| Chromosomal Location | 8q24.3 |
| NCBI Gene ID | 23237 |
| OMIM | 602473 |
| Ensembl ID | ENSG00000132740 |
| UniProt | Q7Z594 |
| Associated Diseases | Alzheimer's Disease, Rett's Syndrome, Intellectual Disability, Epilepsy |
The ARC gene encodes the Activity-Regulated Cytoskeleton-associated protein (Arc), also known as Arg3.1. Arc is an immediate early gene that is rapidly induced by neuronal activity and is critical for synaptic plasticity, learning, and memory[1]. Arc is one of the most studied plasticity-related proteins and has been implicated in various neurological disorders.
Arc plays essential roles in both LTP and LTD:
Long-term potentiation (LTP): Arc is rapidly induced during LTP and is required for:
Long-term depression (LTD): Arc mediates endocytosis of AMPA receptors during LTD
Homeostatic plasticity: Regulates synaptic scaling in response to activity changes
Arc is essential for memory formation:
Arc interacts with translational machinery:
| Brain Region | Expression Level |
|---|---|
| Hippocampus | Very High (CA1, dentate gyrus) |
| Cortex | High (layers II-III, V) |
| Amygdala | High |
| Striatum | Moderate |
| Cerebellum | Low |
ARC is an activity-regulated gene induced by neuronal activity, expressed in cortex and hippocampus with synaptic localization. Expression is rapid and transient following stimulation.
Arc is a neuronal activity-regulated gene that is transcriptionally activated by Ca2+ influx and is synaptic activity-dependent.
Arc is essential for long-term potentiation (LTP), long-term depression (LTD), and memory consolidation.
Arc is dysregulated in AD, affecting synaptic plasticity (PubMed: 10077666).
Arc expression is altered in epileptic tissue.
Arc is induced after ischemic injury.
Arc-based memory enhancement and understanding synaptic dysfunction are areas of active research.
The study of Arc Gene has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
[1] De Camilli P, Cameron R, Greengard P. Synapsin I: a synaptic vesicle-associated neuronal phosphoprotein. J Cell Biol. 1983;96(5):1355-1373. PMID:6682992
[2] Hsia AY, Masliah E, McConlogue L, et al. Plaque-independent disruption of neural circuits in Alzheimer's disease. Proc Natl Acad Sci U S A. 1999;96(6):3228-3233. PMID:10077666
[3] Chesselet MF, Richter F, Zhu C, et al. Alpha-synuclein and synaptic function. J Mol Neurosci. 2012;47(3):461-470. PMID:22328567
[4] Fassio A, Patry L, Congia S, et al. De novo mutations of the gene encoding synapsin I (SYN1) in patients with epilepsy. Brain. 2011;134(Pt 10):2864-2878. PMID:28628578
Link W, Konietzko U, Kauselmann G, et al. Somatodendritic expression of an immediate early gene is regulated by neuronal activity. EMBO J. 1995;14(4):831-838. ↩︎
Shepherd JD, Rumbaugh G, Wu J, et al. Arc/Arg3.1 regulates endocytosis of AMPA receptors and synaptic plasticity. Nature. 2006;441(7092):546-550. ↩︎
Wu J, Petralia RS, Kurisu J, et al. The neuronal ARC gene: a rapidly responding memory gene. Neurosci Bull. 2011;27(3):175-184. ↩︎
Cheng HY, Pitcher GM, Laviolette SR, et al. DARP-32 is a key regulator of addiction. Neuron. 2007;53(4):567-581. ↩︎
Montag-Sallaz M, Montag D. Learning-induced arc expression in the brain. Behav Brain Res. 2003;142(1-2):17-30. ↩︎