NEK7 (NIMA-related kinase 7) is a serine/threonine kinase belonging to the NEK (Never in Mitosis A-related kinase) family. NEK7 has emerged as a critical mediator of NLRP3 inflammasome activation, positioning it at the intersection of innate immunity and neuroinflammation. In the central nervous system, NEK7-dependent NLRP3 activation in microglia drives the release of pro-inflammatory cytokines IL-1β and IL-18, contributing to neuronal damage in Alzheimer's disease, Parkinson's disease, and other neurodegenerative conditions.
| Full Name | NIMA-related kinase 7 |
| Gene Symbol | NEK7 |
| Chromosomal Location | 1q31.3 |
| NCBI Gene ID | [140609](https://www.ncbi.nlm.nih.gov/gene/140609) |
| Ensembl ID | [ENSG00000151414](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000151414) |
| UniProt ID | [Q8TDX2](https://www.uniprot.org/uniprot/Q8TDX2) |
| Protein | [NEK7 Protein](/proteins/nek7-protein) |
| Associated Diseases | [Alzheimer's disease](/diseases/alzheimers-disease), [Parkinson's disease](/diseases/parkinsons-disease), [ALS](/diseases/amyotrophic-lateral-sclerosis), [Multiple Sclerosis](/diseases/multiple-sclerosis) |
NEK7 is a 34 kDa serine/threonine kinase that plays dual roles in cell biology:
NEK7 participates in mitotic spindle assembly and cytokinesis. It is activated by NEK9 during mitosis and phosphorylates downstream targets required for proper centrosome separation and bipolar spindle formation. NEK7 and the closely related NEK6 share approximately 87% sequence identity in their kinase domains and have partially overlapping roles in cell division.
The most disease-relevant function of NEK7 is its role as an essential upstream mediator of NLRP3 inflammasome assembly. NEK7 directly binds the leucine-rich repeat (LRR) domain and nucleotide-binding domain (NBD) of NLRP3 through its C-terminal kinase domain. This interaction is required for NLRP3 oligomerization, ASC speck formation, and subsequent caspase-1 activation.
Key mechanistic details include:
NEK7 also regulates mitochondrial homeostasis and reactive oxygen species (ROS) production. Loss of NEK7 reduces mitochondrial ROS generation, which itself is an upstream NLRP3 activating signal, creating a feed-forward loop in neuroinflammation.
NLRP3 inflammasome activation is a central driver of neuroinflammation in Alzheimer's disease. Amyloid-beta fibrils and oligomers activate NLRP3 in microglia through NEK7-dependent mechanisms:
In Parkinson's disease, NEK7-NLRP3 signaling is activated by:
Inflammasome activation contributes to motor neuron death in ALS. SOD1-mutant microglia show enhanced NEK7-NLRP3 complex formation. TDP-43 aggregates also trigger NLRP3 through mechanisms involving mitochondrial damage and NEK7 recruitment.
NEK7-dependent NLRP3 activation in microglia and infiltrating macrophages promotes demyelination in experimental autoimmune encephalomyelitis (EAE) models. IL-1β released through this pathway damages oligodendrocytes and disrupts the blood-brain barrier.
NEK7 is ubiquitously expressed but shows notable enrichment in:
Allen Human Brain Atlas data shows NEK7 expression across all brain regions with enrichment in white matter tracts and areas with high microglial density.
NEK7 represents an attractive therapeutic target for neuroinflammatory diseases: