| Chromosomal Location | 1p36.
The PINK1 gene encodes PTEN-induced kinase 1 (PINK1), a mitochondrial serine/threonine-protein kinase:
- Mitochondrial quality control: Sensor of mitochondrial damage
- Mitophagy initiation: Phosphorylates ubiquitin and Parkin to initiate mitophagy
- Mitochondrial dynamics: Regulates mitochondrial fission/fusion
- Cell survival: Protects against mitochondrial dysfunction and apoptosis
- Metabolic regulation: Influences mitochondrial bioenergetics
PINK1 contains an N-terminal mitochondrial targeting sequence and a C-terminal kinase domain. Under normal conditions, it is imported into mitochondria and degraded. Upon mitochondrial damage, it accumulates on the outer mitochondrial membrane.
- Inheritance: Autosomal recessive
- Mechanism: Biallelic loss-of-function mutations
- Onset: Typically before age 20
- Pathogenesis:
- Impaired mitophagy
- Accumulation of dysfunctional mitochondria
- Progressive loss of dopaminergic neurons
- Often co-occurs with PRKN mutations (PARK2/PRKN)
- Inheritance: Can be heterozygous (risk factor)
- Mechanism: May cause partial mitochondrial dysfunction
- High expression: Brain (substantia nigra, cortex), heart, muscle, kidney
- Cellular localization: Mitochondrial outer membrane (upon damage)
- Regional specificity: High in substantia nigra pars compacta
- Allen Brain Atlas: High expression in dopaminergic neurons
-
Valente EM, et al. (2004). "Hereditary early-onset Parkinson's disease caused by mutations in PINK1." Science. PMID:15087508
-
Narendra DP, et al. (2010). "PINK1 is selectively stabilized on impaired mitochondria." Nat Cell Biol. PMID:20159410
-
Kane LA, et al. (2014). "PINK1 phosphorylates ubiquitin to activate Parkin." J Cell Biol. PMID:25437812
-
Liu W, et al. (2019). "PINK1 kinase and its neuroprotective function." Mol Neurobiol. PMID:31482473
The study of Pink1 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 Valente EM, et al. (2004). Hereditary early-onset Parkinson's disease caused by mutations in PINK1. Science. PMID:15118497.
- 2 Narendra D, et al. (2009). PINK1 is selectively stabilized on impaired mitochondria to initiate mitophagy. Nature. PMID:19966266.
- 3 Geisler S, et al. (2010). PINK1/Parkin-mediated mitophagy is dependent on VDAC1 and p62/SQSTM1. Nat Cell Biol. PMID:20144137.
- 4 Matsuda N, et al. (2010). PINK1 stabilized by mitochondrial depolarization recruits Parkin to damaged mitochondria and activates latent Parkin for mitophagy. J Cell Biol. PMID:20100542.
- 5 Clark IE, et al. (2006). Drosophila pink1 is required for mitochondrial function and interacts genetically with parkin. Nature. PMID:16672981.
-
- See: PINK1 Protein - Protein product
- See: Parkinson's disease - Disease context
- See: PRKN Gene - Parkin, partner in mitophagy
- See: mitophagy - Cellular mechanism
- See: Mitochondrial Dysfunction - Disease mechanism
|
|---|