{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T00:33:45Z","timestamp":1791419625558,"version":"4.3.3"},"reference-count":71,"publisher":"Rockefeller University Press","issue":"1","content-domain":{"domain":["rupress.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2005,10,10]]},"abstract":"<jats:p>Macroautophagy, which is a lysosomal pathway for the turnover of organelles and long-lived proteins, is a key determinant of cell survival and longevity. In this study, we show that neuronal macroautophagy is induced early in Alzheimer's disease (AD) and before \u03b2-amyloid (A\u03b2) deposits extracellularly in the presenilin (PS) 1\/A\u03b2 precursor protein (APP) mouse model of \u03b2-amyloidosis. Subsequently, autophagosomes and late autophagic vacuoles (AVs) accumulate markedly in dystrophic dendrites, implying an impaired maturation of AVs to lysosomes. Immunolabeling identifies AVs in the brain as a major reservoir of intracellular A\u03b2. Purified AVs contain APP and \u03b2-cleaved APP and are highly enriched in PS1, nicastrin, and PS-dependent \u03b3-secretase activity. Inducing or inhibiting macroautophagy in neuronal and nonneuronal cells by modulating mammalian target of rapamycin kinase elicits parallel changes in AV proliferation and A\u03b2 production. Our results, therefore, link \u03b2-amyloidogenic and cell survival pathways through macroautophagy, which is activated and is abnormal in AD.<\/jats:p>","DOI":"10.1083\/jcb.200505082","type":"journal-article","created":{"date-parts":[[2005,10,4]],"date-time":"2005-10-04T00:24:58Z","timestamp":1128385498000},"page":"87-98","update-policy":"https:\/\/doi.org\/10.1083\/jcb.crossmarkpolicy","source":"Crossref","is-referenced-by-count":852,"title":["Macroautophagy\u2014a novel \u03b2-amyloid peptide-generating pathway activated in Alzheimer's disease"],"prefix":"10.1083","volume":"171","author":[{"given":"W. 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