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[
Discover,
1991]
Undulating under the microscope, its muscle and nerve cells visible within its transparent body, the tiny roundworm Caenorhabditis elegans is normally a creature of surprising grace. But one mutant strain is not elegans at all. It thrashes about in such an uncoordinated fashion that researchers have dubbed the mutant worm "unc"...
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[
Nat Genet,
2006]
Systematic mapping of genetic interactions for Caenorhabditis elegans genes involved in signaling pathways implicated in human disease reveals a network of 350 interactions. The topology of this network resembles that mapped previously in yeast, reinforcing the idea that similar networks may underlie the genetic basis of complex human disease.
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[
Nat Methods,
2006]
RNA interference (RNAi) and automated high-throughput screening is a promising combination. But the first systematic large-scale mapping of genetic interactions in an animal shows that manual methods still have advantages over sophisticated automated screens.
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[
Nature,
1998]
In 1983, John Sulston and Alan Coulson began to construct a complete physical map of the genome of the nematode worm Caenorhabditis elegans, and started what became known as the C. elegans Genome Project. At the time, several people wondered why John, who had just described all of the cell divisions in C. elegans (the cell lineage), was interested in this project rather than in a more 'biological' problem. He replied by joking that he had a "weakness for grandiose, meaningless projects". In 1989, as the physical map approached completion, the Genome Project, now including Bob Waterston and his group, embarked on the even more ambitious goal of obtaining the complete genomic sequence
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[
Nat Genet,
2001]
Comparative studies of nematode development provide a powerful framework for investigating the evolution of developmental mechanisms. A recent report also demonstrates how comparative work can inform our understanding of basic developmental signaling pathways. In particular, investigation of the differences in vulva development between Caenorhabditis elegans and Pristionchus pacificus has clarified the molecular relationship between an epidermal growth factor-Ras-MAP kinase signaling pathway and downstream Hox transcription factor activity.
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[
Nat Genet,
1992]
Predicting coding regions from genomic sequence is not entirely accurate, and predicting expression patterns of candidate genes is still a fantasy. Both of these concerns can be addressed by analysing expressed sequences (cDNA) in addition to genomic sequences. The genomic sequencing of the nematode Caenorhabditis elegans has begun; in parallel, several groups (including the genomic sequencing participants) are isolating, sequencing and mapping C. elegans cDNA clones. The first results of this endeavor, including the analysis of about 1,600 independent cDNA sequences, appear in this issue.
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[
Science,
1985]
The biologists who investigate nature's deepest and longest-running mystery often use the term fate map to describe the startling transformations that lie in store for the fertilized egg. It is one of the more venerable terms in embryology, and one of the most appropriate, too, for destiny and geography indeed intersect within the magnificent speck of DNA and cytoplasm that is an egg on the edge of becoming a organism. In this one cell, the entire genetic bill of lading for an animal, be it fruit fly or human, is stored, waiting to unfold with miraculous precision. It is that process of life unfurling-of cells becoming brain or backbone, of genes selectively flashing on and herding cells toward their certain fates, of tissues aggregating and differentiating toward ever more specific tasks-that both confounds and as surely delights developmental biologists.