Planar polarity and tissue morphogenesis.
Planar polarity is a global, tissue-level phenomenon that coordinates cell behavior in a two-dimensional plane. The Frizzled/planar cell polarity (PCP) and anterior-posterior (AP) patterning systems for planar polarity operate in a variety of cell types and provide direction to cells with different morphologies and behaviors. These two systems involve different sets of proteins but both use directional cues provided locally by communication between neighboring cells. This review describes our current understanding of the mechanisms that transmit directional signals from cell to cell and compares the strategies for generating global systems of spatial information in stationary and dynamic cell populations.
Zallen
Jennifer A
JA
Developmental Biology Program, Sloan-Kettering Institute, New York, NY 10021, USA. zallenj@mskcc.org
D000818:Animals; D019521:Body Patterning; D002450:Cell Communication; D016764:Cell Polarity; D004330:Drosophila / Q000235:genetics / Q000378:metabolism; D004848:Epithelium / Q000378:metabolism; D051157:Frizzled Receptors / Q000378:metabolism*; D018507:Gene Expression Regulation, Developmental; D008954:Models, Biological; D009024:Morphogenesis
D051157:Frizzled Receptors