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Updated: May 18, 2026
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Hand Dissection of Caenorhabditis elegans Intestines
Published on: September 13, 2022
Functional transcriptomics of a migrating cell in Caenorhabditis elegans.
Erich M Schwarz1, Mihoko Kato, Paul W Sternberg
1Division of Biology and Howard Hughes Medical Institute, California Institute of Technology, Pasadena, CA 91125, USA.
Summary
This study identifies genes controlling cell migration in Caenorhabditis elegans, revealing novel roles for potassium channels and other genes in development and cancer metastasis.
Area of Science:
- Developmental biology
- Cell biology
- Molecular genetics
Background:
- Cell migration is crucial for metazoan development and cancer metastasis.
- The linker cell in Caenorhabditis elegans provides a model for studying cell migration.
- Nuclear hormone receptor NHR-67 is essential for linker cell migration.
Purpose of the Study:
- To identify genes involved in linker cell migration.
- To understand the role of NHR-67 in regulating gene expression during cell migration.
- To discover novel molecular functions in cell migration.
Main Methods:
- RNA sequencing (RNA-seq) of individually staged and dissected linker cells.
- Comparison of transcriptomes from different larval stages and NHR-67 knockdown.
- RNA interference (RNAi) screens to test gene function in migration.
Main Results:
- 8,000-10,000 genes expressed in linker cells; 22-25% regulated by NHR-67.
- 22% of tested genes (45/204) are required for normal linker cell shape and migration.
- Tandem pore potassium channels and other novel genes are upregulated by NHR-67 and required for migration.
Conclusions:
- NHR-67 regulates a significant number of genes involved in cell migration.
- Identified novel genes, including potassium channels, essential for nematode cell migration.
- Findings suggest conserved roles for these genes in human cell migration and disease.
