Entity Detail — Knowledge Graph Node
This page aggregates everything SciDEX knows about MICROGLIA: its mechanistic relationships (Knowledge Graph edges), hypotheses targeting it, analyses mentioning it, and supporting scientific papers. The interactive graph below shows its immediate neighbors. All content is AI-synthesized from peer-reviewed literature.
Resident immune cells of the central nervous system. Microglia survey the brain parenchyma, clear debris, prune synapses, and respond to injury. In neurodegenerative diseases, chronic microglial activation drives neuroinflammation through complement cascade and cytokine release.
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| Cell Type | MICROGLIA |
| Also Known As | Microglial cells, Brain-resident macrophages |
| Definition | Resident immune cells of the central nervous system derived from yolk sac progenitors |
| Functions | Immune surveillance, Synaptic pruning, Phagocytosis, Cytokine production, Debris clearance |
| Key Markers | IBA1, CD11b, CX3CR1, P2RY12, TMEM119, TREM2 |
| States | Homeostatic, Disease-associated (DAM), Activated, Phagocytic, Senescent |
| Key Pathways | TREM2-DAP12 signaling, TLR4-NF-kB, CSF1R signaling, Complement cascade, cGAS-STING |
| Associated Diseases | Alzheimer's disease, Parkinson's disease, Multiple sclerosis, ALS, Nasu-Hakola disease |
| Discovery | First described by Pío del Río Hortega in 1919 |
| Linked Hypotheses | 368 hypotheses |
Knowledge base pages for this entity
graph TD
subgraph Therapeutic["Therapeutic"]
MICROGLIA["MICROGLIA"] -->|"expressed in"| TREM2["TREM2"]
TREM2_3["TREM2"] -->|"expressed in"| MICROGLIA["MICROGLIA"]
end
subgraph Pathology["Pathology"]
MICROGLIA["MICROGLIA"] -->|"associated with"| NEUROINFLAMMATION["NEUROINFLAMMATION"]
MICROGLIA["MICROGLIA"] -->|"associated with"| NEURON["NEURON"]
MICROGLIA["MICROGLIA"] -->|"associated with"| TNF["TNF"]
MICROGLIA["MICROGLIA"] -->|"associated with"| SNCA["SNCA"]
MICROGLIA["MICROGLIA"] -->|"associated with"| TAU["TAU"]
MICROGLIA["MICROGLIA"] -->|"associated with"| TREM2_1["TREM2"]
MICROGLIA["MICROGLIA"] -->|"associated with"| NEURODEGENERATION["NEURODEGENERATION"]
AMYLOID["AMYLOID"] -->|"associated with"| MICROGLIA["MICROGLIA"]
APOE["APOE"] -->|"associated with"| MICROGLIA["MICROGLIA"]
end
subgraph Signaling["Signaling"]
MICROGLIA["MICROGLIA"] -->|"activates"| TREM2_2["TREM2"]
INFLAMMATION["INFLAMMATION"] -->|"activates"| MICROGLIA["MICROGLIA"]
C1Q["C1Q"] -->|"activates"| MICROGLIA["MICROGLIA"]
TREM2_4["TREM2"] -->|"regulates"| MICROGLIA["MICROGLIA"]
end
style MICROGLIA fill:#006494,stroke:#4fc3f7,stroke-width:3px,color:#e0e0e0,font-weight:bold
style TREM2 fill:#006494,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style NEUROINFLAMMATION fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style NEURON fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style TNF fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style SNCA fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style TAU fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style TREM2_1 fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style TREM2_2 fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style NEURODEGENERATION fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style INFLAMMATION fill:#5d4400,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style TREM2_3 fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style C1Q fill:#006494,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style TREM2_4 fill:#006494,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style AMYLOID fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
style APOE fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0| Target | Relation | Type | Str |
|---|---|---|---|
| Blood-Brain Barrier | therapeutic_target | pathway | 1.00 |
| Als | expressed_in | disease | 1.00 |
| Immune Response | activates | pathway | 1.00 |
| Neurodegeneration | inhibits | disease | 1.00 |
| Blood-Brain Barrier | activates | pathway | 1.00 |
| Ischemia | regulates | disease | 1.00 |
| Phagocytosis | activates | pathway | 1.00 |
| Dementia | therapeutic_target | disease | 1.00 |
| Alzheimer | inhibits | disease | 1.00 |
| C1Q | associated_with | gene | 1.00 |
| Stroke | activates | disease | 1.00 |
| Toll-Like Receptor | activates | pathway | 1.00 |
| Apoptosis | activates | pathway | 1.00 |
| Neuroinflammation | inhibits | disease | 1.00 |
| Neurodegeneration | activates | disease | 1.00 |
| Neuroinflammation | therapeutic_target | disease | 1.00 |
| Aging | activates | disease | 1.00 |
| TAU | activates | gene | 1.00 |
| Inflammation | regulates | disease | 1.00 |
| Amyotrophic Lateral Sclerosis | activates | disease | 1.00 |
| Neuroinflammation | regulates | disease | 1.00 |
| Aging | therapeutic_target | disease | 1.00 |
| TNF | activates | gene | 1.00 |
| Inflammation | inhibits | disease | 1.00 |
| Neuroinflammation | activates | disease | 1.00 |
| Parkinson | activates | disease | 1.00 |
| Neurodegeneration | associated_with | disease | 1.00 |
| Autophagy | activates | pathway | 1.00 |
| C3 | associated_with | gene | 1.00 |
| SYNUCLEIN | associated_with | protein | 1.00 |
| Parkinson | associated_with | disease | 1.00 |
| TNF | associated_with | gene | 1.00 |
| NEUROINFLAMMATION | associated_with | gene | 1.00 |
| Dementia | activates | disease | 1.00 |
| NEURON | associated_with | gene | 1.00 |
| Mitophagy | activates | pathway | 1.00 |
| Alzheimer | activates | disease | 1.00 |
| NEUROINFLAMMATION | inhibits | gene | 1.00 |
| Als | associated_with | disease | 1.00 |
| TREM2 | expressed_in | protein | 1.00 |
| SNCA | associated_with | gene | 1.00 |
| NEURODEGENERATION | activates | gene | 1.00 |
| Alzheimer | associated_with | disease | 1.00 |
| Als | activates | disease | 1.00 |
| TREM2 | associated_with | gene | 1.00 |
| NEUROINFLAMMATION | activates | gene | 1.00 |
| Inflammation | associated_with | disease | 1.00 |
| Inflammation | activates | disease | 1.00 |
| Alzheimer | therapeutic_target | disease | 1.00 |
| Alzheimer | interacts_with | disease | 1.00 |
| Source | Relation | Type | Str |
|---|---|---|---|
| AMYLOID | inhibits | gene | 1.00 |
| INFLAMMATION | inhibits | gene | 1.00 |
| MITOCHONDRIAL DYSFUNCTION | activates | gene | 1.00 |
| STROKE | activates | gene | 1.00 |
| AMYLOID | activates | gene | 1.00 |
| NLRP3 | activates | gene | 1.00 |
| STROKE | regulates | gene | 1.00 |
| NEURON | activates | gene | 1.00 |
| ASTROCYTES | activates | gene | 1.00 |
| TREM2 | activates | gene | 1.00 |
| ALZHEIMER'S DISEASE | regulates | gene | 1.00 |
| PHAGOCYTOSIS | activates | gene | 1.00 |
| ALZHEIMER | associated_with | gene | 1.00 |
| NF-ΚB | activates | gene | 1.00 |
| ALS | associated_with | gene | 1.00 |
| ASTROCYTES | regulates | gene | 1.00 |
| C1Q | activates | protein | 1.00 |
| TREM2 | expressed_in | gene | 1.00 |
| APOE | associated_with | gene | 1.00 |
| COMPLEMENT | activates | gene | 1.00 |
| NEURODEGENERATIVE DISEASES | therapeutic_target | gene | 1.00 |
| AMYOTROPHIC LATERAL SCLEROSIS | activates | gene | 1.00 |
| ASTROCYTES | associated_with | gene | 1.00 |
| ALZHEIMER'S DISEASE | associated_with | gene | 1.00 |
| ds-f2c28aed24a7 | data_in | dataset | 1.00 |
| ALZHEIMER'S DISEASE | causes | gene | 1.00 |
| ALZHEIMER'S DISEASE | targets | gene | 1.00 |
| AMYLOID | associated_with | gene | 1.00 |
| AKT | associated_with | gene | 1.00 |
| NEUROINFLAMMATION | associated_with | gene | 1.00 |
| ent-gene-28e2cb01 | expressed_in | gene | 1.00 |
| AGING | associated_with | gene | 1.00 |
| TREM2 | regulates | protein | 1.00 |
| MITOPHAGY | activates | gene | 1.00 |
| IL-6 | associated_with | gene | 1.00 |
| NEUROINFLAMMATION | causes | gene | 1.00 |
| APP | associated_with | gene | 1.00 |
| INFLAMMATION | activates | phenotype | 1.00 |
| TREM2 | associated_with | gene | 1.00 |
| AMYLOID | targets | gene | 1.00 |
| APOPTOSIS | associated_with | gene | 1.00 |
| PARKINSON'S DISEASE | activates | gene | 1.00 |
| ALZHEIMER'S DISEASE | activates | gene | 1.00 |
| NEURODEGENERATION | associated_with | gene | 1.00 |
| MICROGLIA ACTIVATION | activates | gene | 1.00 |
| TNF-Α | activates | gene | 1.00 |
| APP/PS1 | activates | gene | 1.00 |
| AUTOPHAGY | associated_with | gene | 1.00 |
| NEURODEGENERATIVE DISEASES | associated_with | gene | 1.00 |
| NEURODEGENERATION | inhibits | gene | 1.00 |
Hypotheses where this entity is a therapeutic target
Scientific analyses that reference this entity
neuroinflammation | 2026-04-08 | 0 hypotheses
neurodegeneration | 2026-04-03 | 7 hypotheses Top: 0.682
neurodegeneration | 2026-04-03 | 18 hypotheses Top: 0.847
neurodegeneration | 2026-04-02 | 7 hypotheses Top: 0.720
neurodegeneration | 2026-04-01 | 7 hypotheses Top: 0.639
Experimental studies targeting or related to this entity
| Experiment | Type | Disease | Score | Feasibility | Model | Status | Est. Cost |
|---|---|---|---|---|---|---|---|
| TREM2 KO amyloid pathology study | validation | Alzheimers Disease | 0.800 | 0.00 | Mouse (5xFAD/TREM2-/-) | completed | N/A |
| TREM2 KO amyloid pathology study | validation | Alzheimers Disease | 0.800 | 0.00 | Mouse (5xFAD/TREM2-/-) | completed | N/A |
| TREM2 KO amyloid pathology study | validation | Alzheimers Disease | 0.800 | 0.00 | Mouse (5xFAD/TREM2-/-) | in_progress | N/A |
| TREM2 KO amyloid pathology study | validation | Alzheimers Disease | 0.800 | 0.00 | Mouse (5xFAD/TREM2-/-) | completed | N/A |
| TREM2 KO amyloid pathology study | validation | Alzheimers Disease | 0.800 | 0.00 | Mouse (5xFAD/TREM2-/-) | completed | N/A |
| E2F coordination of G2/M transcriptional program | exploratory | 0.750 | 0.00 | endocycling mammalian cells | proposed | N/A | |
| TREM2 KO amyloid pathology study | validation | Alzheimers Disease | 0.200 | 0.00 | Mouse (5xFAD/TREM2-/-) | in_progress | N/A |
Scientific publications cited in analyses involving this entity
| Title & PMID | Authors | Journal | Year | Citations |
|---|---|---|---|---|
| Microglia-Mediated Neuroinflammation: A Potential Target for the Treatment of Ca [PMID:35642214] | Wang M, Pan W, Xu Y, Zhang J, Wan J, Jia | J Inflamm Res | 2022 | 1 |
| TREM2, microglia, and Alzheimer's disease. [PMID:33516818] | Qin Q, Teng Z, Liu C, Li Q, Yin Y, Tang | Mech Ageing Dev | 2021 | 1 |
| Human and mouse single-nucleus transcriptomics reveal TREM2-dependent and TREM2- [PMID:31932797] | Zhou Y, Song WM, Andhey PS, Swain A, Lev | Nat Med | 2020 | 1 |
| TREM2 Maintains Microglial Metabolic Fitness in Alzheimer's Disease. [PMID:28802038] | Ulland TK, Song WM, Huang SC, Ulrich JD, | Cell | 2017 | 1 |
| The TREM2-APOE Pathway Drives the Transcriptional Phenotype of Dysfunctional Mic [PMID:28930663] | Krasemann S, Madore C, Cialic R, Baufeld | Immunity | 2017 | 1 |
| Precision Neurodegeneration: Integrating Molecular Mechanisms, Biomarkers, and T [PMID:41833042] | ["Lyu G", "Li D"] | CNS & neurological disorders d | 2026 | 0 |
| Emerging pathological mechanisms of Alzheimer's disease pathogenesis: from neuro [PMID:41858793] | ["Wang R", "Feng Y", "Zhou Z", "Jiang J" | Frontiers in aging neuroscienc | 2026 | 0 |
| Human CSF proteogenomics links genetic variation to neurodegenerative disease pr [PMID:41757182] | ["Puerta R", "Garc\u00eda-Gonz\u00e1lez | medRxiv : the preprint server | 2026 | 0 |
| PLCG2 signaling and genetic resilience in Alzheimer's disease. [PMID:41888907] | Tsai AP, Martin AK, Mi A, Yeh AE, Ramire | Molecular neurodegeneration | 2026 | 0 |
| PLCG2 signaling and genetic resilience in Alzheimer's disease. [PMID:41888907] | Tsai AP, Martin AK, Mi A, Yeh AE, Ramire | Mol Neurodegener | 2026 | 0 |
| TREM2 deficiency delays postnatal microglial maturation and synaptic pruning, le [PMID:41930604] | Yang HC, Deng YS, Zhang J, Zhang T, Song | J Alzheimers Dis | 2026 | 0 |
| Investigating the Potential of Gene Editing Technologies in Enhancing Stem Cell [PMID:41926312] | ["Mehrabadi S"] | Current aging science | 2026 | 0 |
| TREM2 in neurodegeneration and diseases. [PMID:41792456] | ["Abdulkhaliq A", "Alasiri G", "Kim B", | Molecular psychiatry | 2026 | 0 |
| Berbamine hydrochloride as a brain penetrant galectin 3 inhibitor in a model of [PMID:41772384] | ["Siew J", "Lee C", "Chen H", "Lin H", " | Brain : a journal of neurology | 2026 | 0 |
| The microglial TREM2 receptor programs hippocampal development in a mouse model [PMID:41887542] | Ahmed S, Bowers C, Munoz-Martin J, Jamwa | Brain, behavior, and immunity | 2026 | 0 |
| Molecular mechanism of Alzheimer's disease using integrated multi-omics. [PMID:41907842] | Alhusaini M, Mussa BM, Ilce BY, Alhaj H, | Frontiers in aging neuroscienc | 2026 | 0 |
| Oligodendrocyte precursor cells-microglia crosstalk via BMP4 drives microglial n [PMID:41881962] | Baek S, Jang J, Yeo S, Jung HJ, Choe Y | Signal transduction and target | 2026 | 0 |
| Phagocytes as plaque catalysts: Human macrophages generate seeding-competent Aβ4 [PMID:41770935] | ["Konstantoulea K", "Ramakers M", "Borri | Proceedings of the National Ac | 2026 | 0 |
| Microglia, Trem2, and Neurodegeneration. [PMID:38769824] | Shi Q, Gutierrez RA, Bhat MA | Neuroscientist | 2025 | 0 |
| Microglia, Trem2, and Neurodegeneration. [PMID:38769824] | Shi Q, Gutierrez RA, Bhat MA | The Neuroscientist : a review | 2025 | 0 |
Multi-agent debates referencing this entity
closed · Rounds: 4 · Score: 0.68 · 2026-04-22
closed · Rounds: 4 · Score: 0.93 · 2026-04-09
closed · Rounds: 4 · Score: 0.93 · 2026-04-03
closed · Rounds: 4 · Score: 0.90 · 2026-04-03
closed · Rounds: 4 · Score: 0.95 · 2026-04-01
Hypotheses and analyses mentioning MICROGLIA in their description or question text
Score: 0.910 · neurodegeneration · 2026-04-12
## Mechanistic Overview TREM2-ASM Crosstalk in Microglial Lysosomal Senescence starts from the claim that modulating SMP
Score: 0.907 · neurodegeneration · 2026-04-12
## Mechanistic Overview TREM2-Mediated Astrocyte-Microglia Cross-Talk in Neurodegeneration starts from the claim that mo
Score: 0.898 · neurodegeneration · 2026-04-16
## Mechanistic Overview CSF1R Inhibition-Mediated Microglial Replacement as a State Transition Reset starts from the cla
Score: 0.895 · neurodegeneration · 2026-04-12
## Mechanistic Overview SIRT1-Mediated Reversal of TREM2-Dependent Microglial Senescence starts from the claim that modu
Score: 0.892 · neurodegeneration · 2026-04-07
## Mechanistic Overview TREM2-Mediated Astrocyte-Microglia Crosstalk in Neurodegeneration starts from the claim that mod
Score: 0.887 · neurodegeneration · 2026-04-14
## Mechanistic Overview H1: TREM2 Agonism to Redirect APOE4-Enhanced Microglia from Synapse Pruning to Amyloid Clearance
Score: 0.880 · neurodegeneration · 2026-04-07
## **Molecular Mechanism and Rationale** The triggering receptor expressed on myeloid cells 2 (TREM2) serves as a criti
Score: 0.879 · neurodegeneration · 2026-04-16
## Mechanistic Overview Optimized Temporal Window for Metabolic Boosting Therapy Determines Success of Microglial State
Score: 0.875 · neurodegeneration · 2026-04-07
**Molecular Mechanism and Rationale** The TREM2-mediated astrocyte-microglia cross-talk mechanism represents a complex
Score: 0.869 · neurodegeneration · 2026-04-07
## Mechanistic Overview TREM2-Mediated Cholesterol Dysregulation in Microglial Senescence starts from the claim that mod
Score: 0.847 · neurodegeneration · 2026-04-17
## Mechanistic Overview Microglial Senescence Prevention via TREM2/SASP Axis starts from the claim that modulating not y
Score: 0.847 · Alzheimer's Disease · 2026-04-02
## Mechanistic Overview ACSL4-Driven Ferroptotic Priming in Disease-Associated Microglia starts from the claim that modu
Score: 0.843 · neurodegeneration · 2026-04-16
## Mechanistic Overview miR-155/Interferon-gamma Feedback Loop as a Reversible Molecular Switch for Protective Microglia
Score: 0.824 · neurodegeneration · 2026-04-05
## Mechanistic Overview Microglial AIM2 Inflammasome as the Primary Driver of TDP-43 Proteinopathy Neuroinflammation in
Score: 0.812 · neuroscience · 2026-04-12
## Mechanistic Overview TREM2-Mediated Microglial Dysfunction Disrupts Perivascular Tau Clearance starts from the claim