|ZFIN ID: ZDB-PUB-070424-5|
Coupling cellular oscillators: A mechanism that maintains synchrony against developmental noise in the segmentation clock
Ishimatsu, K., Horikawa, K., and Takeda, H.
|Source:||Developmental dynamics : an official publication of the American Association of Anatomists 236(6): 1416-1421 (Journal)|
|Registered Authors:||Takeda, Hiroyuki|
|Keywords:||coupled oscillator, segmentation clock, zebrafish|
|PubMed:||17420984 Full text @ Dev. Dyn.|
Ishimatsu, K., Horikawa, K., and Takeda, H. (2007) Coupling cellular oscillators: A mechanism that maintains synchrony against developmental noise in the segmentation clock. Developmental dynamics : an official publication of the American Association of Anatomists. 236(6):1416-1421.
ABSTRACTA unique feature of vertebrate segmentation is its strict periodicity, which is governed by the segmentation clock consisting of numerous cellular oscillators. These cellular oscillators, driven by a negative-feedback loop of Hairy transcription factor, are linked through Notch-dependent intercellular coupling and display the synchronous expression of clock genes. Combining our transplantation experiments in zebrafish with mathematical simulations, we review how the cellular oscillators maintain synchrony and form a robust system that is resistant to the effects of developmental noise such as stochastic gene expression and active cell proliferation. The accumulated evidence indicates that the segmentation clock behaves as a "coupled oscillators," a mechanism that also underlies the synchronous flashing seen in fireflies.