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Genome sequence of small marine creature sheds light on vertebrate origins
Date:6/18/2008

Contact: Anlong Xu, Ph.D., Sun Yat-sen University, Guangzhou, China (lssxal@mail.sysu.edu.cn, +86-20-3933-2990)

3. Hijacking of neural crest genes

In vertebrates, the peripheral nervous system and the craniofacial skeleton develop from a specific set of cells, known as neural crest cells. In this report, researchers in the laboratory of Dr. Marianne Bronner-Fraser at the California Institute of Technology have used the amphioxus genome sequence to investigate how this vertebrate-specific cell type evolved from an invertebrate ancestor. The group found genes in amphioxus that are similar to vertebrate genes related to neural crest cells, however in cephalochordates they are used for other functions. This finding raises the intriguing possibility that during vertebrate evolution, these genes may have "hijacked" for the development of neural crest cells.

Reference: Yu, J.-K., Meulemans, D., McKeown, S., and Bronner-Fraser, M. Insights from the amphioxus genome on the origin of vertebrate neural crest. Genome Res. doi:10.1101/gr.076208.108

Contact: Marianne Bronner-Fraser, Ph.D., California Institute of Technology, Pasadena, CA. (mbronner@caltech.edu, +1-626-395-3355)


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Contact: Peggy Calicchia
calicchi@cshl.edu
516-422-4012
Cold Spring Harbor Laboratory
Source:Eurekalert

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