gene

CD4

Entity Detail — Knowledge Graph Node

Understanding Entity Pages

This page aggregates everything SciDEX knows about CD4: 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.

983Connections
12Hypotheses
0Analyses
50Outgoing
50Incoming
0Experiments
0Debates

Summary

CD4 is a gene implicated in neurodegeneration research. Key relationships include: activates, regulates, associated with. Associated with ALS, Aging, Als. Connected to 526 entities in the SciDEX knowledge graph.

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🧬 Gene Info
Gene SymbolCD4
Chromosome12p13.31.
Protein FamilyImmunoglobulin superfamily
Protein TypeReceptor
FunctionBinding to MHC class II molecules on antigen-presenting cells
Molecular Weight55 kDa
PathwaysAmyloid, Apoptosis, Autophagy, Complement, Differentiation
UniProt IDP01730
NCBI Gene ID921
Ensembl IDENSG00000149257
GeneCardsCD4
Human Protein AtlasCD4
Associated DiseasesAging, Als, Alzheimer, Atherosclerosis, Autoimmune
Known Drugs/CompoundsFINGOLIMOD
InteractionsACTB, AGING, AKK, AKT, Alpha-Synuclein, ALPHA-SYNUCLEIN
KG Connections981 knowledge graph edges
DatabasesGeneCardsHPASTRING
🔮 Predicted Structure: CD4 — AlphaFold P01730 Click to expand

AI-predicted structure from AlphaFold | Powered by Mol*

Wiki Pages (14)

Knowledge base pages for this entity

Canonical Page

CD4/Tfh Help and Germinal-center Memory in Older Adults

gap · 1140 words

Validated Hypothesis: Differential Complement Regulator Expression on Synaptic Membranes (CD55/CD46)

hypothesis · 2439 words

CD47-SIRPα Immune Checkpoint Therapy

therapeutic · 1461 words

CD44 Protein

protein · 1350 words

CD44 - Cell Surface Glycoprotein

gene · 1313 words

Innate Immune Reprogramming: NLRP3 + CD47 Checkpoint Blockade

idea · 1196 words

Pathway Diagram

flowchart TD
    CD4["CD4
T-helper cell receptor"] CD4 -->|"regulates"| Neuroinflammation["Neuroinflammation
Process"] CD4 -->|"activates"| MS_activation["Multiple Sclerosis
Activation"] CD4 -->|"inhibits protective"| ALS_protection["ALS
Neuroprotection"] CD4 -->|"regulates"| PD_pathology["Parkinson's Disease
Pathology"] CD4 -->|"biomarker"| ALS_progression["ALS
Disease Progression"] CD4 -->|"therapeutic target"| MS_treatment["MS
Therapeutic Intervention"] Neuroinflammation -->|"promotes"| Neurodegeneration["Neurodegeneration
Process"] Neuroinflammation -->|"contributes to"| Dementia_risk["Dementia
Risk Development"] MS_activation -->|"drives"| Autoimmune_response["Autoimmune
Response"] MS_activation -->|"leads to"| Myelin_damage["Myelin
Degradation"] ALS_protection -->|"loss results in"| Motor_neuron_death["Motor Neuron
Degeneration"] PD_pathology -->|"accelerates"| Dopaminergic_loss["Dopaminergic
Neuron Loss"] Autoimmune_response -->|"triggers"| CNS_inflammation["CNS
Inflammation"] CNS_inflammation -->|"exacerbates"| Neurodegeneration CD4 -->|"regulates"| Aging_process["Cellular
Aging Process"] Aging_process -->|"increases risk"| Neurodegeneration MS_treatment -->|"targets"| CD4_modulation["CD4+ T-cell
Modulation"] CD4_modulation -->|"reduces"| Neuroinflammation style CD4 fill:#006494 style MS_treatment fill:#1b5e20 style CD4_modulation fill:#1b5e20 style ALS_protection fill:#1b5e20 style Neuroinflammation fill:#ef5350 style MS_activation fill:#ef5350 style Autoimmune_response fill:#ef5350 style CNS_inflammation fill:#ef5350 style Neurodegeneration fill:#5d4400 style Motor_neuron_death fill:#5d4400 style Dementia_risk fill:#5d4400

Outgoing (717)

TargetRelationTypeStr
CD4encodesprotein0.00
Inflammationactivatesdisease1.00
Inflammationregulatesdisease1.00
Alsregulatesdisease0.95
T CELLSinteracts_withcell_type0.95

Incoming (266)

SourceRelationTypeStr
CD4encodesgene0.00
INFLAMMATIONregulatesgene1.00
INFLAMMATIONactivatesgene1.00
VPUdegradesprotein0.95
PTPN23mediatesprotein0.85

Targeting Hypotheses (12)

Hypotheses where this entity is a therapeutic target

HypothesisScoreDiseaseAnalysis
Activity-Dependent CD55/CD46 Trafficking and Synaptic Surfac 0.833 synaptic-biology What determines the selectivity of compl
Differential Complement Regulator Expression on Synaptic Mem 0.833 synaptic-biology What determines the selectivity of compl
Hypothesis 2: GPNMB-CD44 Axis as Anti-inflammatory Pathway 0.772 neurodegeneration Which specific factors in conditioned me
Anti-CD47/SIRPα Checkpoint Therapy to Enhance Phagocytic Cle 0.510 immunomics Systemic immune profiling in neurodegene
Astrocytic Complement Regulator Secretion Modulates Synaptic 0.499 synaptic-biology What determines the selectivity of compl
CD44-Mediated Src/PI3K/Akt Signaling Cascade 0.470 neuroinflammation What molecular mechanisms mediate SPP1-i
Microglial Membrane Camouflage Exploits CD47-SIRPα Checkpoin 0.444 neuroinflammation How does Alectinib, a kinase inhibitor,
CREB-Mediated Differential CD55/CD46 Expression Creates Acti 0.380 synaptic-biology What determines the selectivity of compl
Complement Regulator CD55/CD46 Expression Modulates Microgli 0.380 synaptic-biology What determines the selectivity of compl
Astrocytic Complement Regulator Release Modulates Synaptic V 0.380 synaptic-biology What determines the selectivity of compl
CREB-Mediated Differential CD55/CD46 Expression Creates Acti 0.380 synaptic-biology What determines the selectivity of compl
CD44-SPP1 Axis Precision Targeting 0.000 - What molecular mechanisms mediate SPP1-i

Mentioning Analyses (0)

Scientific analyses that reference this entity

No analyses mention this entity

Experiments (0)

Experimental studies targeting or related to this entity

ExperimentTypeDiseaseScoreFeasibilityModelStatusEst. Cost
No experiments found

Related Papers (6)

Scientific publications cited in analyses involving this entity

Title & PMIDAuthorsJournalYearCitations
The temporal and stimuli-specific effects of LPS and IFNγ on microglial activati [PMID:41695273] Heiss CN, Naylor AS, Pesämaa I, Meshi A, Front Aging Neurosci 2026 0
CD44 connects autophagy decline and ageing in the vascular endothelium. [PMID:37684253] Unknown Nat Commun 2023 0
The membrane receptor CD44: novel insights into metabolism. [PMID:35249813] Unknown Trends Endocrinol Metab 2022 0
CD44: A Multifunctional Mediator of Cancer Progression. [PMID:34944493] Unknown Biomolecules 2021 0
The glycoprotein GPNMB attenuates astrocyte inflammatory responses through the C [PMID:29519253] ["Matthew L Neal", "Alexa M Boyle", "Kev Journal of neuroinflammation 2019 0
HAS2 and CD44 in breast tumorigenesis. [PMID:25081531] Unknown Adv Cancer Res 2014 0

Debates (0)

Multi-agent debates referencing this entity

No debates reference this entity

Related Research

Hypotheses and analyses mentioning CD4 in their description or question text

CD44-Mediated Src/PI3K/Akt Signaling Cascade

Score: 0.470 · neuroinflammation · 2026-04-22

## Mechanistic Overview CD44-Mediated Src/PI3K/Akt Signaling Cascade starts from the claim that modulating CD44, SRC, PI

Microglial Membrane Camouflage Exploits CD47-SIRPα Checkpoint Disinhibition

Score: 0.444 · neuroinflammation · 2026-04-16

## Mechanistic Overview Microglial Membrane Camouflage Exploits CD47-SIRPα Checkpoint Disinhibition starts from the clai

CREB-Mediated Differential CD55/CD46 Expression Creates Activity-Dependent Compl

Score: 0.380 · synaptic-biology · 2026-04-27

This hypothesis proposes that activity-dependent CREB signaling creates spatially distinct complement vulnerability maps

Complement Regulator CD55/CD46 Expression Modulates Microglial Engulfment During

Score: 0.380 · synaptic-biology · 2026-04-27

The circadian-regulated expression of complement regulators CD55 and CD46 on synaptic membranes establishes a temporal g

Astrocytic Complement Regulator Release Modulates Synaptic Vulnerability (CD55/C

Score: 0.380 · synaptic-biology · 2026-04-27

**Molecular Mechanism and Rationale** Astrocytic release of soluble complement regulators CD55 and CD46, rather than me

CREB-Mediated Differential CD55/CD46 Expression Creates Activity-Dependent Compl

Score: 0.380 · synaptic-biology · 2026-04-27

This hypothesis proposes that the CREB1-BDNF-TrkB activity-dependent transcriptional machinery directly controls the spa

CD44-SPP1 Axis Precision Targeting

Score: 0.000 · unknown disease · 2026-04-28

Selective CD44 receptor antagonists or allosteric modulators to block pathological synaptic engulfment while preserving