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Retrograde transport of TrkB-containing autophagosomes via the adaptor AP-2 mediates neuronal complexity and prevents neurodegeneration.

Nature communications (2017-04-08)
Natalia L Kononenko, Gala A Claßen, Marijn Kuijpers, Dmytro Puchkov, Tanja Maritzen, Aleksandra Tempes, Anna R Malik, Agnieszka Skalecka, Sujoy Bera, Jacek Jaworski, Volker Haucke
ABSTRACT

Autophagosomes primarily mediate turnover of cytoplasmic proteins or organelles to provide nutrients and eliminate damaged proteins. In neurons, autophagosomes form in distal axons and are trafficked retrogradely to fuse with lysosomes in the soma. Although defective neuronal autophagy is associated with neurodegeneration, the function of neuronal autophagosomes remains incompletely understood. We show that in neurons, autophagosomes promote neuronal complexity and prevent neurodegeneration in vivo via retrograde transport of brain-derived neurotrophic factor (BDNF)-activated TrkB receptors. p150

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(Z)-4-Hydroxytamoxifen, ≥98% Z isomer