Neural Crest Specification Regulated by the Helix-Loop-Helix Repressor Id2
Abstract
Vertebrate neural crest cells, derived from the neural folds, generate a variety of tissues, such as cartilage, ganglia, and cranial (intramembranous) bone. The chick homolog of the helix-loop-helix transcriptional regulator Id2 is expressed in cranial but not trunk neural folds and subsequently in some migrating cranial neural crest cells. Ectopic expression of Id2 with recombinant retroviruses converted ectodermal cells to a neural crest fate, demonstrating that proper regulation of Id2 is important for sustaining epidermal traits. In addition, overexpression of Id2 resulted in overgrowth and premature neurogenesis of the dorsal neural tube. These results suggest that Id2 may allocate ectodermal precursors into neural rather than epidermal lineages.
Additional Information
© 1998 American Association for the Advancement of Science. Received 16 March 1998; accepted 1 July 1998. We thank S. Fraser, C. Baker, and M. Dickinson for critical reading of the manuscript; J. Sechrist for critical analysis of ectoderm conversion data; C. Marcelle, T. Moreno, M. Barembaum, and C. LaBonne for advice on molecular biology protocols; and K. Min and J. Neri for cryostat sectioning. We are grateful to S. Bryant and D. Gardiner for the stage 13 to 24 chick embryo library. Supported by U.S. Public Health Service grants NS34671 and NS36585.Additional details
- Eprint ID
- 52095
- DOI
- 10.1126/science.281.5379.988
- Resolver ID
- CaltechAUTHORS:20141124-104739069
- NS34671
- U.S. Public Health Service (USPHS)
- NS36585
- U.S. Public Health Service (USPHS)
- Created
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2014-11-24Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field