Přehled o publikaci
2024
Swedish Alzheimer's disease variant perturbs activity of retrograde molecular motors and causes widespread derangement of axonal transport pathways
FEOLE, Monica, Victorio M Pozo DEVOTO, Neda DRAGIŠIĆ, Cayetana ARNAIZ, Julieta BIANCHELLI et. al.Základní údaje
Originální název
Swedish Alzheimer's disease variant perturbs activity of retrograde molecular motors and causes widespread derangement of axonal transport pathways
Autoři
FEOLE, Monica, Victorio M Pozo DEVOTO, Neda DRAGIŠIĆ, Cayetana ARNAIZ, Julieta BIANCHELLI, Kateřina TEXLOVÁ, Kristina KOVAČOVICOVA, Jan S NOVOTNY, Daniel HAVAS, Tomas L FALZONE a Gorazd B STOKIN
Vydání
Journal of Biological Chemistry, AMSTERDAM, ELSEVIER, 2024, 1083-351X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Organizace
Lékařská fakulta – Masarykova univerzita – Repozitář
UT WoS
001345540200001
EID Scopus
2-s2.0-85189556487
Klíčová slova česky
Alzheimerova choroba; axonální transport; familiární patogenní varianty; amyloidní prekurzorový protein; dynaktin-1; časné endozomy; lysozomy
Klíčová slova anglicky
Alzheimer’s disease; axonal transport; familial pathogenic variants; amyloid precursor protein; dynactin-1; early endosomes; lysosomes
Návaznosti
LX22NPO5107, projekt VaV.
Změněno: 29. 11. 2024 00:50, RNDr. Daniel Jakubík
Anotace
V originále
Experimental studies in flies, mice, and humans suggest a significant role of impaired axonal transport in the pathogenesis of Alzheimer’s disease (AD). The mechanisms underlying these impairments in axonal transport, however, remain poorly understood. Here we report that the Swedish familial AD mutation causes a standstill of the Amyloid Precursor Protein (APP) in the axons at the expense of its reduced anterograde transport. The standstill reflects the perturbed directionality of the axonal transport of APP, which spends significantly more time traveling in the retrograde direction. This ineffective movement is accompanied by an enhanced association of dynactin-1 with APP, which suggests that reduced anterograde transport of APP is the result of enhanced activation of the retrograde molecular motor dynein by dynactin-1. The impact of the Swedish mutation on axonal transport is not limited to the APP vesicles since it also reverses the directionality of a subset of early endosomes, which become enlarged and aberrantly accumulate in distal locations. In addition, it also reduces the trafficking of lysosomes due to their less effective retrograde movement. Altogether, our experiments suggest a pivotal involvement of retrograde molecular motors and transport in the mechanisms underlying impaired axonal transport in AD and reveal significantly more widespread derangement of axonal transport pathways in the pathogenesis of AD.Experimental studies in flies, mice, and humans suggest a significant role of impaired axonal transport in the pathogenesis of Alzheimer’s disease (AD). The mechanisms underlying these impairments in axonal transport, however, remain poorly understood. Here we report that the Swedish familial AD mutation causes a standstill of the Amyloid Precursor Protein (APP) in the axons at the expense of its reduced anterograde transport. The standstill reflects the perturbed directionality of the axonal transport of APP, which spends significantly more time traveling in the retrograde direction. This ineffective movement is accompanied by an enhanced association of dynactin-1 with APP, which suggests that reduced anterograde transport of APP is the result of enhanced activation of the retrograde molecular motor dynein by dynactin-1. The impact of the Swedish mutation on axonal transport is not limited to the APP vesicles since it also reverses the directionality of a subset of early endosomes, which become enlarged and aberrantly accumulate in distal locations. In addition, it also reduces the trafficking of lysosomes due to their less effective retrograde movement. Altogether, our experiments suggest a pivotal involvement of retrograde molecular motors and transport in the mechanisms underlying impaired axonal transport in AD and reveal significantly more widespread derangement of axonal transport pathways in the pathogenesis of AD.