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Single-nucleus cross-tissue molecular reference maps toward understanding disease gene function.

Gökcen Eraslan1, Eugene Drokhlyansky1, Shankara Anand2

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Summary
This summary is machine-generated.

This study created a comprehensive gene expression atlas from diverse tissues, revealing cell types involved in both normal bodily functions and various diseases. The atlas aids in understanding gene roles in monogenic and complex genetic disorders.

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Area of Science:

  • Genomics and Molecular Biology
  • Cellular and Tissue Biology
  • Computational Biology

Background:

  • Gene function and regulation are critical for maintaining homeostasis and understanding disease.
  • Knowledge of cellular and tissue-specific gene expression is essential for this understanding.
  • Existing atlases may lack cross-tissue integration and standardized analysis across diverse samples.

Purpose of the Study:

  • To generate a comprehensive, integrated cross-tissue atlas of gene expression profiles.
  • To identify shared and tissue-specific cellular features across diverse tissue types.
  • To link cell types and gene modules to the pathology of monogenic diseases and complex traits.

Main Methods:

  • Application of four single-nucleus RNA sequencing (snRNA-seq) methods.
  • Analysis of eight diverse, archived, frozen tissue types from 16 donors (25 samples).
  • Integration of 209,126 nuclei profiles using a conditional variational autoencoder.

Main Results:

  • Creation of a large-scale, cross-tissue atlas of single-nucleus gene expression.
  • Identification of shared and tissue-specific characteristics of tissue-resident cell populations.
  • Pinpointing of cell types and gene modules potentially involved in monogenic diseases and complex traits.

Conclusions:

  • The cross-tissue atlas provides a valuable resource for understanding gene expression in health and disease.
  • The findings facilitate the identification of cellular players in neuromuscular, metabolic, and immune pathologies.
  • This resource can advance the study of disease mechanisms underlying complex genetic traits.