| HNRNPA1 — Heterogeneous Nuclear Ribonucleoprotein A1 | |
|---|---|
| Symbol | HNRNPA1 |
| Full Name | Heterogeneous Nuclear Ribonucleoprotein A1 |
| Chromosome | 12q13.13 |
| NCBI Gene | 3178 |
| Ensembl | ENSG00000166086 |
| OMIM | 164017 |
| UniProt | P09651 |
| Diseases | Amyotrophic Lateral Sclerosis, Inclusion Body Myopathy, Frontotemporal Dementia |
| Expression | Ubiquitous, High in brain, spinal cord, muscle |
| Key Mutations | |
| Asp262Val Gly295Ser Gly298Arg Asp314Val Phe316Leu |
|
Hnrnpa1 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.
HNRNPA1 (Heterogeneous Nuclear Ribonucleoprotein A1) is a gene encoding an RNA-binding protein that plays critical roles in RNA processing, splicing, and transport. Pathogenic mutations in HNRNPA1 cause familial amyotrophic lateral sclerosis (ALS), inclusion body myopathy (IBM), and frontotemporal dementia (FTD)[1].
HNRNPA1 is a member of the hnRNP A/B family of RNA-binding proteins with multiple cellular functions:
HNRNPA1 mutations cause autosomal dominant ALS, typically with combined upper and lower motor neuron involvement. The disease mechanism involves:
Some HNRNPA1 mutations cause autosomal dominant inclusion body myopathy, characterized by:
HNRNPA1 mutations can cause FTD with or without motor neuron disease, sharing pathological features with ALS including TDP-43 pathology[2].
| Mechanism | Description |
|---|---|
| RNA splicing defects | Mis-splicing of transcripts essential for neuronal survival |
| Stress granule accumulation | Persistent granules that disrupt translation |
| Nuclear import defects | Impaired nuclear-cytoplasmic transport |
| Protein aggregation | Formation of insoluble inclusions |
Therapeutic strategies for HNRNPA1-related disorders include:
Current areas of investigation include:
The study of Hnrnpa1 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.
Kim HJ, Kim NC, Wang YD, et al. Mutations in the prion-like domains of hnRNPA1 and hnRNPA2B1 cause familial amyotrophic lateral sclerosis. Nature. 2013;501(7466):467-471. PMID:24060820 ↩︎
Alternate splicing factor mutations in ALS/FTD. Neuron. 2013;80(1):8-10. PMID:24093116 ↩︎