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Related Experiment Video

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Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
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Dissect Relationships Between Gene Co-expression and Functional Connectivity in Human Brain.

Xue Zhang1, Yingying Xie1, Jie Tang1

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This study reveals how gene co-expression relates to brain functional connectivity. Specific genes influence different brain networks, impacting overall brain function and potentially schizophrenia.

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Area of Science:

  • Neuroscience
  • Genetics
  • Brain Imaging

Background:

  • Emerging evidence suggests a link between gene co-expression and functional connectivity in the human brain.
  • However, the precise patterns of this association are not well understood.

Purpose of the Study:

  • To comprehensively analyze the relationships between gene co-expression and functional connectivity in the human brain.
  • To identify specific genes and functional connections associated with brain connectivity patterns.

Main Methods:

  • Integration of neuroimaging-based functional connectivity data from living brains.
  • Analysis of brain-wide gene expression data from postmortem brains.
  • Comprehensive statistical analyses to dissect gene co-expression and functional connectivity relationships.

Main Results:

  • Identified 125 connectivity-related genes (20 novel), enriched for functions like dendrite extension, signaling, and schizophrenia.
  • Discovered 179 gene-related functional connections, primarily within brain networks, especially homologous cortical regions.
  • Found 51 genes associated with all brain networks (enriched for action potential, schizophrenia) and 51 genes with network-specific effects (enriched for ion transport).

Conclusions:

  • Brain functional connectivity is differentially influenced by gene expression.
  • Distinct sets of connectivity-related genes modulate different brain networks.
  • These findings provide insights into the genetic underpinnings of brain network organization and neurological disorders like schizophrenia.