protein 714 words KG: C1QPROTEIN 2026-03-21
kind:proteinsection:proteinsstate:published
Contents

C1Q Protein (Complement Component 1q)

🔬 Protein Info
Gene SymbolC1Q
AliasesC1QPROTEIN
Protein TypeSignaling Protein
Target ClassSignaling Protein
FunctionComplement cascade inhibitor or antibody-mediated neutralization
Mechanism of ActionComplement cascade inhibitor or antibody-mediated neutralization
Primary ExpressionPrimarily expressed in myeloid cells (monocytes, macrophages, microglia); astrocytic expression detected in disease states
DruggabilityLow (0.36)
Clinical StageApproved
Molecular Weight26 kDa
PathwaysChaperone, Complement, Differentiation, Endocytosis, Epigenetic
UniProt IDP02745
NCBI Gene ID712
Ensembl IDENSG00000173372
GeneCardsC1Q
Human Protein AtlasC1Q
Associated DiseasesA1 Astrocytes, A1 Reactive Astrocytes, AD, AGING, ALI, AML
Known Drugs/CompoundsBeta-Amyloid Oligomers, β-amyloid Oligomers, RAPAMYCIN, β-Amyloid Oligomers, LPS, rapamycin
InteractionsC3, C1QA, C1QC, RAB11, RAB5, CNTNAP4
SciDEX TargetView Target Profile (4 clinical trials)
KG Connections1529 knowledge graph edges
DatabasesGeneCardsHPASTRING

Knowledge Graph

Related Hypotheses (12)

Astrocyte-Microglia Communication Rebalancing via Cytokine M
Score: 0.49
SASP-Mediated Complement Cascade Amplification
Score: 0.70
Complement C1QA Spatial Gradient in Cortical Layers
Score: 0.43
Complement-Mediated Synaptic Pruning Dysregulation
Score: 0.40
Selective HDAC3 Inhibition with Cognitive Enhancement
Score: 0.56

Related Analyses (13)

What are the specific molecular mechanisms by which C1Q comp
neuroinflammation · failed
How does SPI1 transcriptionally regulate C1QA and C1QC expre
neuroinflammation · completed
TDP-43 phase separation therapeutics for ALS-FTD
neurodegeneration · archived
Senolytic therapy for age-related neurodegeneration
neurodegeneration · archived
Synaptic pruning by microglia in early AD
neurodegeneration · archived

Related Experiments (17)

LPS-induced mouse model of depression with synaptic loss ana
validation · proposed · Score: 0.90
C1q neutralizing antibody intervention in depression model
validation · proposed · Score: 0.85
bEV-mediated synaptic pruning via C1q-C3 pathway
exploratory · proposed · Score: 0.85
scRNA-seq analysis of human atherosclerotic plaques
exploratory · proposed · Score: 0.90
Single-cell RNA sequencing analysis of human atherosclerotic
exploratory · proposed · Score: 0.90

Key Papers (1)

Complement and microglia mediate early synapse loss in Alzheimer mouse
Science 2016 · 1 cites

See Also (1)

Neurodegeneration
disease · KG edge: implicated_in