nervous system
• embryos exhibit defects in pre-crossing commissural axon guidance, with significantly more commissural axons misprojecting into motor columns at E11.5
• pre-crossing axon guidance defects include stalling and pre-crossing turning phenotypes
• however, patterning of the spinal cord and development of dI1 commissural neurons is normal
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homeostasis/metabolism
• however, Robo3.1 mRNA level is not affected in the spinal cord
• when dorsal spinal cord (DSC) explants are dissected from pre-crossing E10.5 spinal cord and cultured in vitro, dorsal commissural axons show a dramatic reduction in Robo3.1 protein level relative to controls
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cellular
• embryos exhibit defects in pre-crossing commissural axon guidance, with significantly more commissural axons misprojecting into motor columns at E11.5
• pre-crossing axon guidance defects include stalling and pre-crossing turning phenotypes
• however, patterning of the spinal cord and development of dI1 commissural neurons is normal
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