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Updated: Jul 5, 2025

Using SCOPE to Identify Potential Regulatory Motifs in Coregulated Genes

Using SCOPE to Identify Potential Regulatory Motifs in Coregulated Genes

Published on: May 31, 2011

Combinatorial expression motifs in signaling pathways.

Alejandro A Granados¹, Nivedita Kanrar¹, Michael B Elowitz¹

¹Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA; Howard Hughes Medical Institute and Department of Applied Physics, California Institute of Technology, Pasadena, CA 91125, USA.

|January 12, 2024

Summary

This summary is machine-generated.

Animal cells use recurring pathway expression motifs, like those in TGF-β and Notch signaling, across diverse cell types. This suggests cells utilize common molecular pathways in unique ways.

Keywords:

cell atlas developmental signaling integrated data motifs signaling pathways signaling receptors single cell transcriptional profiles transcriptome

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Area of Science:

Cellular and Molecular Biology
Systems Biology
Genomics

Background:

Animal cells utilize molecular pathways with variant components (ligands, receptors) that are differentially expressed.
Cell-specific expression profiles potentially tailor pathway function to cellular context.
Understanding the distribution and recurrence of these expression profiles across cell types is crucial.

Purpose of the Study:

To identify and characterize recurrent pathway expression profiles, termed 'motifs', across diverse cell types.
To investigate the distribution of these motifs across various cell types and developmental stages.
To explore the combinatorial co-expression patterns within these motifs.

Main Methods:

Analysis of single-cell gene expression datasets.
Identification of recurring expression profiles (motifs) in core molecular pathways.
Examination of motif co-expression patterns and correlations across cell types.

Main Results:

Discovery of broadly distributed pathway expression motifs in core pathways, including TGF-β, Notch, Wnt, and SRSF splice factors.
Motifs involve the combinatorial co-expression of multiple pathway components.
Weak correlations in motif usage were observed between pathways in adult cells and during development.

Conclusions:

Cellular organization can be viewed as a mosaic, with different cell types employing common pathways in distinct functional modes.
Pathway expression motifs provide a framework for understanding cell-type-specific pathway regulation.
The findings highlight a combinatorial and context-dependent usage of molecular pathways in multicellular organisms.