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- W2078804787 abstract "Presenilin (PS) 1 and PS2 are multi-pass transmembrane proteins involved in vital brain functions. Studies using transgenic or conditional knockout models show that PS1 is implicated in crucial brain developmental processes. Conversely, PS2 knockout mice do not exhibit any abnormality in the brain morphology, suggesting that PS2 may not be involved in brain development. However, there is no holistic information available for endogenous expression of PS during brain development. Therefore, we have examined the distribution and expression profile of PS1 and PS2 mRNA and protein in the cerebral cortex of prenatal, neonatal and postnatal mice. The results revealed that the distribution and expression profile of PS1 and PS2 mRNA varied significantly in the cerebral cortex during development. In prenatal stages, both PS1 and PS2 mRNA showed high expression at embryonic day (E) 12.5 and downregulation at E18.5. Postnatally, PS1 mRNA showed upregulation from postnatal day 0 (P0) to P45 and thereafter reduction at 20 weeks, but PS2 mRNA showed no significant alteration. However, they did not exhibit any significant regional variation except at E18.5, when PS2 showed reduction in temporal and medial temporal lobes as compared to frontal and parietal lobes. Furthermore, PS1 showed significant change in protein expression similar to its mRNA profile. However, PS2 protein expression did not correspond to its mRNA; it was highest at E12.5, downregulated up to P20 and then upregulated at P45 and 20 weeks. Taken together, our study demonstrates for the first time that the distribution and expression profile of PS2 is different from PS1 in the mouse cerebral cortex during development." @default.
- W2078804787 created "2016-06-24" @default.
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- W2078804787 date "2012-10-01" @default.
- W2078804787 modified "2023-10-16" @default.
- W2078804787 title "Presenilin 1 and 2 are expressed differentially in the cerebral cortex of mice during development" @default.
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- W2078804787 doi "https://doi.org/10.1016/j.neuint.2012.07.001" @default.
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