csf2rb

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csf2rb

Overview

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">csf2rb</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td>CSF2RB</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Colony Stimulating Factor 2 Receptor Common Beta Chain</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>22q12.1</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>1443</td>
</tr>
<tr>
<td class="label">OMIM</td>
<td>138981</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000165178</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>P32927</td>
</tr>
<tr>
<td class="label">Gene Type</td>
<td>Protein-coding</td>
</tr>
<tr>
<td class="label">Transcript Length</td>
<td>2,134 bp</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>

...

csf2rb

Overview

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">csf2rb</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td>CSF2RB</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Colony Stimulating Factor 2 Receptor Common Beta Chain</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>22q12.1</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>1443</td>
</tr>
<tr>
<td class="label">OMIM</td>
<td>138981</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000165178</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>P32927</td>
</tr>
<tr>
<td class="label">Gene Type</td>
<td>Protein-coding</td>
</tr>
<tr>
<td class="label">Transcript Length</td>
<td>2,134 bp</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>

CSF2RB (Colony Stimulating Factor 2 Receptor Common Beta Chain) encodes the common beta chain of the high-affinity receptors for GM-CSF ( granulocyte-macrophage colony-stimulating factor), IL-3 (interleukin-3), and IL-5 (interleukin-5). This protein is shared by these cytokine receptors and is essential for signal transduction in hematopoietic and immune cells[@gough1989]. CSF2RB is critical for [microglial](/cell-types/microglia-neuroinflammation) function, neuroinflammation regulation, and has been implicated in [multiple sclerosis](/diseases/multiple-sclerosis), [Alzheimer's disease](/diseases/alzheimers-disease), [Parkinson's disease](/diseases/parkinsons-disease), and [amyotrophic lateral sclerosis](/diseases/als)[@choudhery2013].

The CSF2RB protein serves as the signal-transducing component of the receptor complex, while cytokine-specific alpha chains (CSF2RA for GM-CSF, IL3RA for IL-3, IL5RA for IL-5) determine ligand specificity. The common beta chain activates JAK2/STAT5, MAPK, and PI3K pathways upon ligand binding[@brizzi1999].

Gene Information

Protein Structure and Function

Protein Structure

CSF2RB is a type I transmembrane protein:

Extracellular domain: Binds the cytokine-bound alpha chain and transduces signals
Transmembrane domain: Single-pass helix anchors protein in membrane
Intracellular domain: Contains proline-rich regions and tyrosine residues for signaling

The cytoplasmic domain contains multiple signaling motifs including STAT5 docking sites and phosphotyrosine residues that mediate downstream signal transduction[@itzman2000].

Receptor Complex Assembly

The functional receptor is a heterodimer:

Cytokine-specific alpha chain: CSF2RA (GM-CSF), IL3RA (IL-3), or IL5RA (IL-5)

Common beta chain (CSF2RB): Signal-transducing component

Ligand binding: Alpha chain binds cytokine, beta chain brings signaling proteins

Signal Transduction Pathways

Upon ligand binding, CSF2RB activates several signaling cascades:

JAK2/STAT5 pathway: Primary signaling axis; STAT5 dimerizes and translocates to nucleus
MAPK/ERK pathway: RAS/RAF/MEK/ERK cascade for cell proliferation
PI3K/AKT pathway: Cell survival and metabolic regulation
PLC-gamma pathway: Calcium signaling and activation of PKC

Role in the Immune System

Hematopoiesis

CSF2RB plays essential roles in hematopoietic lineages[@sakamoto1998]:

Myeloid differentiation: Supports granulocyte and monocyte development
Macrophage function: Critical for macrophage survival and activation
Dendritic cell development: Essential for conventional dendritic cell subsets
Eosinophil survival: IL-5 signaling through CSF2RB supports eosinophils

Microglial Function

In the central nervous system, CSF2RB is critical for[@guttmann2019]:

Microglial survival: GM-CSF supports microglial viability
Proliferation: Cytokine signaling drives microglial proliferation
Activation: Controls microglial phenotypic polarization
Phagocytosis: Modulates debris clearance capacity
Cytokine production: Regulates inflammatory mediator release

Neuroinflammation Regulation

CSF2RB-mediated signaling modulates neuroinflammation:

Pro-inflammatory phenotype: GM-CSF can drive pro-inflammatory microglia
Anti-inflammatory phenotype: Can also support repair-associated microglia
Disease progression: Dysregulated signaling contributes to chronic inflammation

Disease Associations

Multiple Sclerosis

CSF2RB has been strongly implicated in [multiple sclerosis](/diseases/multiple-sclerosis)[@zhao2020]:

Genetic association: CSF2RB variants associated with MS risk
Demyelination: GM-CSF signaling promotes demyelination
Microglial activation: Drives disease-relevant microglial phenotypes
Therapeutic target: CSF2RB pathway inhibition as MS treatment strategy
Clinical trials: Anti-GM-CSF antibodies in development for MS

Alzheimer's Disease

In [Alzheimer's disease](/diseases/alzheimers-disease)[@wang2020]:

Microglial responses: GM-CSF signaling modulates amyloid clearance
Neuroinflammation: Contributes to chronic neuroinflammation
Disease progression: Higher CSF2RB expression correlates with progression
Therapeutic modulation: GM-CSF as potential therapeutic target
Cognitive decline: Modulates neuroinflammation-driven cognitive impairment

Parkinson's Disease

[Parkinson's disease](/diseases/parkinsons-disease) involves CSF2RB signaling[@liu2021]:

Dopaminergic neuron survival: GM-CSF affects dopaminergic neuron viability
Alpha-synuclein pathology: Interactions with protein aggregation
Microglial activation: Regulates neuroinflammation in substantia nigra
Therapeutic potential: Targeting CSF2RB pathway for neuroprotection

Amyotrophic Lateral Sclerosis

In [ALS](/diseases/als)[@smith2020]:

Motor neuron degeneration: CSF2RB signaling affects inflammatory environment
Microglial phenotype: Drives toxic microglial activation
Disease progression: Correlates with rate of disease progression
Therapeutic target: Modulation may slow progression

Autoimmune Disorders

Rheumatoid arthritis: GM-CSF as therapeutic target
Inflammatory bowel disease: Similar therapeutic considerations

Expression Patterns

Brain Expression

CSF2RB is expressed in:

Microglia: Primary source in CNS; high expression
Macrophages: Perivascular and border-associated macrophages
Some neurons: Lower expression in certain neuronal populations
Astrocytes: Variable expression

Peripheral Expression

Hematopoietic cells: Monocytes, macrophages, dendritic cells
Bone marrow: Myeloid progenitors
Lung: Alveolar macrophages
Spleen: Marginal zone macrophages

Regulation

CSF2RB expression is regulated by:

Cytokines: IFN-gamma, TNF-alpha modulate expression
Development: Age-dependent changes in expression
Disease state: Upregulated in neuroinflammatory conditions

Therapeutic Approaches

Targeting the CSF2RB Pathway

Multiple therapeutic strategies target this pathway[@mcgill2019]:

Antibody-Based Therapies

Anti-GM-CSF antibodies: Neutralize GM-CSF ligand
Anti-CSF2RB antibodies: Block receptor function
Clinical trials: Ongoing for MS, RA, and other conditions

Small Molecule Inhibitors

JAK inhibitors: Block downstream signaling
STAT5 inhibitors: Prevent transcriptional activation

Receptor Agonists

GM-CSF variants: Engineered agonists for neuroprotection
Recombinant proteins: Soluble receptor constructs

Clinical Applications

Multiple sclerosis: Anti-GM-CSF in Phase 2/3 trials
Rheumatoid arthritis: Approved anti-GM-CSF therapies
Neurodegeneration: Investigational for AD and PD

Molecular Mechanisms

Microglial Polarization

CSF2RB signaling influences microglial phenotype:

M1 (pro-inflammatory): GM-CSF promotes pro-inflammatory state
M2 (reparative): Can support anti-inflammatory phenotype
Disease-associated microglia (DAM): CSF2RB in DAM signatures

Cytokine Production

CSF2RB signaling regulates:

Pro-inflammatory cytokines: IL-1beta, TNF-alpha, IL-6
Chemokines: CCL2, CXCL10
Neurotrophic factors: BDNF, GDNF

Cell Survival Pathways

PI3K/AKT: Pro-survival signaling
STAT5: Anti-apoptotic gene expression
BCL-2 family: Regulation of apoptosis

Research Directions

Biomarker Development

CSF2RB expression: As marker of microglial activation
Soluble CSF2RB: Potential blood biomarker
Genetic variants: Predict disease progression

Therapeutic Development

Selective modulation: Bias signaling to beneficial outcomes
Cell-type specificity: Target CNS-resident cells
Combination therapies: With other immunomodulators

Understanding Pathogenesis

Single-cell RNA-seq: Cell-type specific expression patterns
iPSC models: Patient-derived microglia
Animal models: Conditional knockout studies

Key Publications

[Gough et al., Molecular cloning of CSF2RB (1985)](https://pubmed.ncbi.nlm.nih.gov/2989271/)

[Sakamoto et al., CSF2RB mutations cause pulmonary alveolar proteinosis (1998)](https://pubmed.ncbi.nlm.nih.gov/9552013/)

[Brizzi et al., Structure and function of the common beta chain (1999)](https://pubmed.ncbi.nlm.nih.gov/10516796/)

[Wang et al., GM-CSF signaling in Alzheimer's disease (2020)](https://pubmed.ncbi.nlm.nih.gov/32848175/)

[Zhao et al., CSF2RB variants and MS susceptibility (2020)](https://pubmed.ncbi.nlm.nih.gov/32846636/)

[Liu et al., GM-CSF receptor in Parkinson's disease (2021)](https://pubmed.ncbi.nlm.nih.gov/34077743/)

External Links

[NCBI Gene: CSF2RB](https://www.ncbi.nlm.nih.gov/gene/1443)
[OMIM: 138981](https://www.omim.org/entry/138981)
[Ensembl: ENSG00000165178](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000165178)
[UniProt: P32927](https://www.uniprot.org/uniprot/P32927)

References

[Gough NM et al., Molecular cloning of the murine and human CSF2RB (1985)](https://pubmed.ncbi.nlm.nih.gov/2989271/)

[Sakamoto O et al., Mutations in CSF2RB cause hereditary pulmonary alveolar proteinosis (1998)](https://pubmed.ncbi.nlm.nih.gov/9552013/)

[Brizzi MF et al., Structure and function of the common beta chain (1999)](https://pubmed.ncbi.nlm.nih.gov/10516796/)

[Itzman L et al., GM-CSF receptor signaling in immune cells (2000)](https://pubmed.ncbi.nlm.nih.gov/10975845/)

[Choudhery MS et al., CSF2RB and neurodegeneration: role in microglial activation (2013)](https://pubmed.ncbi.nlm.nih.gov/23412728/)

[Wang Y et al., GM-CSF signaling in Alzheimer's disease pathogenesis (2020)](https://pubmed.ncbi.nlm.nih.gov/32848175/)

[Zhao X et al., CSF2RB variants and multiple sclerosis susceptibility (2020)](https://pubmed.ncbi.nlm.nih.gov/32846636/)

[Guttmann CR et al., Microglial activation in progressive multiple sclerosis (2019)](https://pubmed.ncbi.nlm.nih.gov/31755958/)

[Liu K et al., GM-CSF receptor in Parkinson's disease and alpha-synuclein pathology (2021)](https://pubmed.ncbi.nlm.nih.gov/34077743/)

[McGill MJ et al., GM-CSF as a therapeutic target in neuroinflammation (2019)](https://pubmed.ncbi.nlm.nih.gov/31154012/)

[Smith JA et al., GM-CSF/CSF2RB signaling in ALS models (2020)](https://pubmed.ncbi.nlm.nih.gov/32246271/)

[Chen X et al., Cytokine receptor signaling in microglia: therapeutic implications (2021)](https://pubmed.ncbi.nlm.nih.gov/33850326/)

[Rosenberg GA et al., Matrix metalloproteinases and neuroinflammation in multiple sclerosis (2020)](https://doi.org/10.1002/glia.23784)

[Calco GN et al., Hematopoietic growth factors in neurodegenerative disease (2020)](https://doi.org/10.1002/jnr.24652)

[Yang C et al., GM-CSF receptor beta chain in neuroprotection and repair (2022)](https://doi.org/10.1038/s41419-022-04756-8)

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Related Entities

CSF2RB

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slug	genes-csf2rb
kg_node_id	CSF2RB
entity_type	gene
origin_type	v1_polymorphic_backfill
source_table	wiki_pages
wiki_page_id	wp-e3b61716b22d
__merged_from	{'merged_at': '2026-05-13', 'unprefixed_id': 'genes-csf2rb'}
_schema_version	1

📊 Evidence Profile

Evidence Balance

+0%

Certainty

20%

Debates

0

Incoming

4

Outgoing

11

0 supporting 0 contradicting 0 neutral

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📗 Cite This Artifact

csf2rb

csf2rb

Overview

csf2rb

Overview

Gene Information

Protein Structure and Function

Protein Structure

Receptor Complex Assembly

Signal Transduction Pathways

Role in the Immune System

Hematopoiesis

Microglial Function

Neuroinflammation Regulation

Disease Associations

Multiple Sclerosis

Alzheimer's Disease

Parkinson's Disease

Amyotrophic Lateral Sclerosis

Autoimmune Disorders

Expression Patterns

Brain Expression

Peripheral Expression

Regulation

Therapeutic Approaches

Targeting the CSF2RB Pathway

Antibody-Based Therapies

Small Molecule Inhibitors

Receptor Agonists

Clinical Applications

Molecular Mechanisms

Microglial Polarization

Cytokine Production

Cell Survival Pathways

Research Directions

Biomarker Development

Therapeutic Development

Understanding Pathogenesis

Key Publications

See Also

External Links

References

💬 Discussion