mortality/aging
• homozygotes start dying at ~E12.5
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pigmentation
• eye pigment is missing at E14.5
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cellular
N |
• no changes of intracellular Notch1 (NTM) levels are observed in isolated mouse embryonic fibroblasts (MEFs) or in cortex lysates derived from E10.5 brains relative to wild-type controls
• no changes of EGFR (epidermal growth factor receptor) levels are observed in MEFs or cortex lysates relative to wild-type controls
• MEFs show no apparent changes in lysosomal number or function
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• MEFs derived from E12.5 mutant embryos show significant accumulation of endolysosomes (or pre-lysosomes) relative to wild-type MEFs
• however, the numbers of multivesicular bodies, late endosomes, and lysosomes are relatively normal
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• MEFs derived from E12.5 mutant embryos show a significant increase in autophagosomes relative to wild-type MEFs
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• MEFs derived from E12.5 mutant embryos show accumulation of endolysosomes (or pre-lysosomes) and delayed lysosomal degradation of EGFR relative to wild-type MEFs
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vision/eye
• eye pigment is missing at E14.5
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homeostasis/metabolism
• MEFs derived from E12.5 mutant embryos show a significant increase in autophagosomes relative to wild-type MEFs
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