cell
TH2 Cell
Type 2 helper state coordinating IgE, eosinophils, mast cells, mucus, and barrier remodeling
Review layer
Last reviewed 2026-05-17
Use as a systems teaching model for type 2/allergic inflammation. Clinical interpretation depends on phenotype, tissue context, exposure history, and biomarkers.
Appears in response traces
State signature
Systems profile
System effects
Primary mapped axes from existing Atlas data.
Tissue
Organ, barrier, stromal, vascular, or local niche behavior.
Inflammation
Inflammatory alarm, recruitment, mediator release, or tissue-damaging amplification.
Neuroimmune
Nerve, neuropeptide, autonomic, microglial, pain, itch, fatigue, or sickness-behavior coupling.
No direct axis cue is mapped for this node yet.
Local map
Relationship field
Arrows point from the upstream source toward the receiving target. Restraint edges use a bar; association edges stay dashed because they are not causal arrows.
Selected relationship
IL-4 and alarmin-rich priming can polarize naive CD4 cells toward TH2 state
Read as source supporting or biasing the target state.
What this relationship means
Read this as Naive CD4 T Cell influencing TH2 Cell; the arrow names the direction, while the details explain the likely system domain.
Effect of source
Naive CD4 T Cell is the upstream signal or context.
Effect on target
TH2 Cell is the receiving node whose behavior may shift.
Use with caution
Use this as a map-reading aid, not as diagnosis, triage, treatment guidance, or a risk score.
System effect
Naive CD4 T Cell influences TH2 Cell; the axes below show which mapped systems carry that relationship.
Inflammation
Inflammatory alarm, recruitment, mediator release, or tissue-damaging amplification.
Tissue
Organ, barrier, stromal, vascular, or local niche behavior.
Chronicity
Memory, priming, fibrosis, exhaustion, remodeling, or other time-dependent drift.
Axes are mapped cues from Atlas data, not clinical predictions.
Evidence context
Curated edge, reviewed endpoints, and mapped external anchors.
TCR signaling
R-HSA-202403 - checked 2026-06-28
Graph neighborhood
Direct relationships
Arrow shows upstream source toward receiving target.
IL-4 and alarmin-rich priming can polarize naive CD4 cells toward TH2 state
Arrow shows upstream source toward receiving target.
IL-4 drives STAT6/GATA3 type 2 helper differentiation
Context link: no causal arrow.
TH2 cells are the adaptive helper engine of type 2 allergic ecology
Arrow shows upstream source toward receiving target.
TH2 IL-5 supports eosinophil survival and recruitment
Network behavior
Systems Overview
TH2 cells produce IL-4, IL-5, and IL-13 to shape allergic immunity, helminth defense, epithelial remodeling, and IgE class switching.
Lineage
Origin
Naive CD4 T cell -> IL-4/alarmin-rich priming -> GATA3-positive TH2 cell
Transcription factors: GATA3, STAT6, c-MAF
Lifecycle Visualizer
days
Alarmin-conditioned priming
Type 2 instruction
days-weeks
Effector phase
IL-4/IL-5/IL-13 production
weeks
Tissue amplification
Mast cell and eosinophil ecology
months-years
Memory
Rapid allergic recall
Activation and Suppression
Surface and Secreted Signals
Metabolic State
Programs
Acute: IL-4 and IL-13 support B-cell class switching and epithelial mucus programs.
Chronic: Persistent TH2 tone drives eosinophilia, mast-cell priming, fibrosis, and barrier remodeling.
Tissue Roles
gut: Helminth defense, food-allergy ecology, and type 2 epithelial remodeling.
lung: Allergic asthma, mucus, airway reactivity, and eosinophil recruitment.
skin: Atopic dermatitis, itch, and barrier dysfunction loops.
lymphoid: Supports IgE and IgG4 class-switch contexts through B-cell help.
Disease Associations
Clinical Pearls
- TH2 is the pattern behind IgE plus eosinophils plus mast-cell readiness.
- IL-5 explains eosinophils; IL-13 explains much of the tissue remodeling.
- Barrier alarmins can keep TH2 responses alive even when allergen exposure is intermittent.