Special Issue Perspective
What's left in asymmetry?
Article first published online: 19 MAY 2008
Copyright © 2008 Wiley-Liss, Inc.
Special Issue: Special Focus on Left-Right Asymmetry
Volume 237, Issue 12, pages 3453–3463, December 2008
How to Cite
Aw, S. and Levin, M. (2008), What's left in asymmetry?. Dev. Dyn., 237: 3453–3463. doi: 10.1002/dvdy.21560
- Issue published online: 20 NOV 2008
- Article first published online: 19 MAY 2008
- Manuscript Accepted: 11 APR 2008
- NIH. Grant Numbers: R01-GM077425, R01-GM067227
- American Heart Association Established Investigator Grant. Grant Number: 0740088N
- Agency for Science, Technology, and Research (Singapore)
- National Center for Research Resources, National Institutes of Health. Grant Number: CO6RR11244
- left-right asymmetry
Left–right patterning is a fascinating problem of morphogenesis, linking evolutionary and cellular signaling mechanisms across many levels of organization. In the past 15 years, enormous progress has been made in elucidating the molecular details of this process in embryos of several model species. While many outside the field seem to believe that the fundamental aspects of this pathway are now solved, workers on asymmetry are faced with considerable uncertainties over the details of specific mechanisms, a lack of conceptual unity of mechanisms across phyla, and important questions that are not being pursued in any of the popular model systems. Here, we suggest that data from clinical syndromes, cryptic asymmetries, and bilateral gynandromorphs, while not figuring prominently in the mainstream work on LR asymmetry, point to crucial and fundamental gaps of knowledge about asymmetry. We identify 12 big questions that provide exciting opportunities for fundamental new advances in this field. Developmental Dynamics 237:3453–3463, 2008. © 2008 Wiley-Liss, Inc.