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© Research
Publication : Current opinion in genetics & development

Strategies to establish left/right asymmetry in vertebrates and invertebrates

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Current opinion in genetics & development - 23 Jul 2007

Spéder P, Petzoldt A, Suzanne M, Noselli S

Link to Pubmed [PMID] – 17643981

Curr. Opin. Genet. Dev. 2007 Aug;17(4):351-8

Left/right (L/R) asymmetry is essential during embryonic development for organ positioning, looping and handed morphogenesis. A major goal in the field is to understand how embryos initially determine their left and right hand sides, a process known as symmetry breaking. A number of recent studies on several vertebrate and invertebrate model organisms have provided a more complex view on how L/R asymmetry is established, revealing an apparent partition between deuterostomes and protostomes. In deuterostomes, nodal cilia represent a conserved symmetry-breaking process; nevertheless, growing evidence shows the existence of pre-cilia L/R asymmetries involving active ion flows. In protostomes like snails and Drosophila, symmetry breaking relies on different mechanisms, involving, in particular, the actin cytoskeleton and associated molecular motors.

http://www.ncbi.nlm.nih.gov/pubmed/17643981