Il10 — Interleukin 10 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Official Symbol: IL10
Official Full Name: Interleukin 10
Gene ID: 3586
Chromosomal Location: 1q31.3
Protein: Interleukin-10
The IL10 gene encodes interleukin-10 (IL-10), a potent anti-inflammatory cytokine that plays a critical role in immune regulation and homeostasis. IL-10 is primarily produced by immune cells and acts to suppress pro-inflammatory responses, making it a key regulator of neuroinflammation in the central nervous system.
The IL10 gene spans approximately 4.9 kb on chromosome 1q31.3 and consists of 5 exons. The gene encodes a 160 amino acid protein that forms a homodimer. IL-10 is highly conserved across species, with significant sequence homology between human and mouse IL-10.
IL-10 is a secreted cytokine that:
- Forms a homodimeric structure
- Contains 6 alpha-helices (A-F)
- Binds to IL-10 receptor complex (IL10R1/IL10R2)
- Signals through JAK-STAT pathway (primarily STAT3)
IL-10 exerts potent anti-inflammatory effects through multiple mechanisms:
- Suppresses pro-inflammatory cytokine production: Inhibits TNF-α, IL-1β, IL-6, IL-12, IFN-γ
- Inhibits antigen presentation: Reduces MHC class II expression on APCs
- Promotes regulatory T cells: Supports Treg development and function
- Modulates microglia: Shifts from pro-inflammatory (M1) to anti-inflammatory (M2) phenotype
- Protects neurons: Reduces excitotoxicity and oxidative stress
IL-10 is produced by multiple cell types:
- T cells: Th2, Treg, and some Th17 cells
- B cells: Regulatory B cells (Bregs)
- Macrophages and monocytes: Especially alternatively activated (M2) phenotype
- Microglia in the CNS
- Neurons and astrocytes to some extent
In the brain, IL-10 is primarily produced by microglia and infiltrating immune cells in response to injury or disease.
- IL-10 levels are altered in AD patients (often elevated in early stages)
- IL-10 can reduce Aβ-induced neuroinflammation
- IL-10 polymorphism (IL10-1082 A/G) associated with AD risk
- IL-10 may protect against synaptic loss
- IL-10 is neuroprotective in PD models
- IL-10 reduces dopaminergic neuron loss in MPTP/6-OHDA models
- IL-10 deficiency exacerbates neuroinflammation
- AAV-delivered IL-10 shows promise in preclinical studies
- IL-10 is elevated in ALS patients and models
- IL-10 may slow disease progression in some models
- IL-10 producing B cells correlate with slower progression
- IL-10 is considered protective in MS/EAE
- IL-10 producing Tregs are reduced in MS patients
- IL-10 polymorphisms associated with MS susceptibility
¶ Stroke and TBI
- IL-10 is neuroprotective in acute brain injury
- IL-10 reduces infarct size and improves functional recovery
IL-10-based therapies are being explored:
- Recombinant IL-10: Tested in clinical trials for autoimmune conditions
- Gene therapy: AAV-delivered IL-10 for chronic neuroinflammation
- Small molecule IL-10 inducers: Exercise, diet, certain drugs
- IL-10 receptor agonists: New strategies to enhance IL-10 signaling
- IL-10 knockout mice: Spontaneous colitis, increased susceptibility to infection
- IL-10 transgenic mice: Protected against some inflammatory diseases
- IL-10 neuron-specific overexpression: Neuroprotection in PD models
The study of Il10 — Interleukin 10 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.
- IL-10 and neuroinflammation in AD - Nature Reviews Neurology, 2022
- IL-10 neuroprotection in PD models - Brain, 2021
- IL-10 in ALS pathogenesis - JCI Insight, 2021
- IL-10 and multiple sclerosis - Annals of Neurology, 2020
- IL-10 gene therapy for neurodegeneration - Molecular Therapy, 2021