Autosomal dominant mutations in APP are correlated with rare cases of early-onset AD. Determining the in vivo functions of APP is difficult because mammals have an APP gene family containing two APP-related genes. C. elegans has a single
APP-related gene, apl-1 mapped on the X chromosome. The apl-1 gene is expressed in multiple cell types and is necessary for many developmental processes, including proper molting and morphogenesis. Loss of apl-1 causes larval lethality, which
can be rescued by neuronal expression of the extracellular domain of APL-1. Similarly, the overexpression of APL-1 causes defects in movement, brood size and larval viability of transgenic nematodes. The apl-1 overexpression-induced lethality
is partially rescued by the reduced activity of sel12,a C. elegans homologue of the human γ-secretase gene component presenilin 1, suggesting that SEL-12, like mammalian PS1, regulates the activity of APL-1 either directly or indirectly [13].
Autosomal dominant mutations in APP are correlated with rare cases of early-onset AD. Determining the in vivo functions of APP is difficult because mammals have an APP gene family containing two APP-related genes. C. elegans has a singleAPP-related gene, apl-1 mapped on the X chromosome. The apl-1 gene is expressed in multiple cell types and is necessary for many developmental processes, including proper molting and morphogenesis. Loss of apl-1 causes larval lethality, whichcan be rescued by neuronal expression of the extracellular domain of APL-1. Similarly, the overexpression of APL-1 causes defects in movement, brood size and larval viability of transgenic nematodes. The apl-1 overexpression-induced lethalityis partially rescued by the reduced activity of sel12,a C. elegans homologue of the human γ-secretase gene component presenilin 1, suggesting that SEL-12, like mammalian PS1, regulates the activity of APL-1 either directly or indirectly [13].
การแปล กรุณารอสักครู่..
