Nfkbia 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.
NFKBIA (NFKB Inhibitor Alpha), also known as IκBα, encodes the primary inhibitor of the NF-κB transcription factor. IκBα binds to NF-κB dimers (p50, p52, RelA, RelB, c-Rel) in the cytoplasm, sequestering them in an inactive state. Upon cellular stimulation, IκBα is phosphorylated and degraded, allowing NF-κB to translocate to the nucleus. NFKBIA is essential for controlling inflammation, immune responses, and cell survival. Dysregulation of NFKBIA is implicated in cancer, autoimmune diseases, and neurodegenerative disorders .
| Attribute |
Value |
| Gene Symbol |
NFKBIA |
| Full Name |
NFKB Inhibitor Alpha |
| Chromosomal Location |
14q13 |
| NCBI Gene ID |
4792 |
| Ensembl ID |
ENSG00000100926 |
| UniProt ID |
P25963 |
| Aliases |
IKBα, MAD3 |
NFKBIA spans ~4.5 kb:
- Exons: 7 coding exons
- Transcript: ~1.7 kb mRNA
- Protein: 317 amino acids, ~36 kDa
IκBα controls NF-κB:
- Cytoplasmic sequestration — Binds and inactivates NF-κB
- Signal-dependent release — Degradation allows nuclear translocation
- Feedback inhibition — NF-κB induces IκBα expression
- Canonical pathway — Critical for classical NF-κB signaling
NFKBIA regulates:
- Inflammatory cytokines — IL-1, TNF-α, IL-6
- Chemokines — CCL, CXCL families
- Cell adhesion molecules — ICAM, VCAM, E-selectin
- Acute phase proteins — CRP, serum amyloid A
IκBα regulates:
- Anti-apoptotic genes — Bcl-2, Bcl-xL, c-IAPs
- Proliferation — Cyclin D1, c-Myc
- Differentiation — Myeloid differentiation
NFKBIA in AD:
- Neuroinflammation — Elevated in AD brain
- Neuronal dysfunction — Altered NF-κB regulation
- Aβ response — Aβ induces IκBα degradation
- Therapeutic target — Stabilizing IκBα may reduce inflammation
- Neuroinflammation — IκBα dysregulated in PD
- Dopaminergic neurons — NF-κB activation in SNc
- Microglial activation — Drives inflammation
- Ischemic injury — IκBα degraded after stroke
- Neuroprotection — IκBα stabilization is protective
- Demyelination — IκBα dysfunction in MS
- Autoimmunity — Central to inflammatory response
Targeting NFKBIA:
- Proteasome inhibitors — Prevent IκBα degradation
- NF-κB inhibitors — Broader approaches
- Anti-inflammatory drugs — Reduce NF-κB activation
- PMID:8340146 — Discovery of NFKBIA
- PMID:10625657 — IκBα structure and function
- PMID:11025718 — NF-κB/IκB signaling
- PMID:14593116 — IκB in immune response
- PMID:15857886 — IκB in the brain
- PMID:21479819 — NFKBIA in neurodegeneration
The study of Nfkbia 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.