Multi-tissue networks behind obesity biology
Adipose–hypothalamus coexpression subnetworks, including circadian genes, associate with obesity-related biology beyond single-tissue views.
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Multi-tissue coexpression networks reveal unexpected subnetworks associated with disease
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Multi-tissue networks behind obesity biology
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Which tissue pair yields key TTC subnetworks?
Between adipose and hypothalamus we find several TTC subnetworks that are associated with precise biological functions.
Where sits the C2 subnetwork?
the C2 subnetwork is at the center of the AH network.
What they did
Built multi-tissue coexpression networks integrating expression across tissues to find cross-tissue subnetworks linked to disease traits.
What they found
Several adipose–hypothalamus TTC subnetworks map to biological functions; a central C2 subnetwork is enriched for obesity- and circadian-related genes (e.g., Arntl, Per1/2).
The limits
What it doesn't show
Network enrichment is not a clinical treatment trial; causality of each edge remains to be tested.
Key terms
- Coexpression network
- Graph of genes with correlated expression patterns.
- Cross-tissue subnetwork
- Gene module spanning multiple organs.
- Adipose–hypothalamus axis
- Fat–brain communication relevant to energy balance.
- Circadian genes
- Clock genes such as Arntl/Per that oscillate daily.
- Obesity-associated genes
- Genes linked to obesity traits in genetic/functional data.
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Central tissue pair:
Common questions
Which tissues feature centrally?
Adipose and hypothalamus.
What is special about C2?
Obesity + circadian enrichment at the AH network center.
Example clock genes?
Arntl, Dbp, Per1, Per2.
Why multi-tissue?
Complex traits arise from networks within and between tissues.
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