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Different types of oscillations in Notch and Fgf signaling regulate the spatiotemporal periodicity of somitogenesis

By Yasutaka Niwa, Hiromi Shimojo, Akihiro Isomura, Aitor González, Hitoshi Miyachi and Ryoichiro Kageyama


Somitogenesis is controlled by cyclic genes such as Notch effectors and by the wave front established by morphogens such as Fgf8, but the precise mechanism of how these factors are coordinated remains to be determined. Here, we show that effectors of Notch and Fgf pathways oscillate in different dynamics and that oscillations in Notch signaling generate alternating phase shift, thereby periodically segregating a group of synchronized cells, whereas oscillations in Fgf signaling released these synchronized cells for somitogenesis at the same time. These results suggest that Notch oscillators define the prospective somite region, while Fgf oscillators regulate the pace of segmentation

Topics: Research Communication
Publisher: Cold Spring Harbor Laboratory Press
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Provided by: PubMed Central
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