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- W2008333059 abstract "The roof plate resident BMPs have sequential functions in the developing spinal cord, establishing cell fate and orienting axonal trajectories. These activities are, however, restricted to the dI1-dI3 neurons in the most dorsal region of the spinal cord. What limits the extent of the action of the BMPs to these neurons? To address this question, we have examined both the distribution of the inhibitory Smads (I-Smads), Smad6 and Smad7 in the spinal cord and the consequence of ectopically expressing the I-Smads in chicken embryos. Our studies suggest that the I-Smads function in vivo to restrict the action of BMP signaling in the dorsal spinal cord. Moreover, the I-Smads have distinct roles in regulating the diverse activities of the BMPs. Thus, the ectopic expression of Smad7 suppresses the dI1 and dI3 neural fates and concomitantly increases the number of dI4-dI6 spinal neurons. In contrast, Smad6 most potently functions to block dI1 axon outgrowth. Taken together, these experiments suggest that the I-Smads have distinct roles in spatially limiting the response of cells to BMP signaling." @default.
- W2008333059 created "2016-06-24" @default.
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- W2008333059 date "2011-08-01" @default.
- W2008333059 modified "2023-09-25" @default.
- W2008333059 title "Inhibitory Smads differentially regulate cell fate specification and axon dynamics in the dorsal spinal cord" @default.
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- W2008333059 doi "https://doi.org/10.1016/j.ydbio.2011.06.017" @default.
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