TBK1 p.E696K mutation causes autophagolysosomal dysfunction and ALS/FTD-like symptoms in mice

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While deleterious mutations are responsible for the vast majority of TBK1-linked ALS/FTD cases, the ALS/FTD causing missense mutation p.E696K leads to a selective loss of TBK1/optineurin binding. Knock-in of this specific missense mutation causes progressive autophagolysosomal dysfunction and an ALS/FTD-like phenotype in mice, while, as opposed to TBK1 deletion, RIPK/TNF-α-dependent necroptosis or overt inflammation are absent. Our results highlight the role of autophagolysosomal dysfunction as ...

Samples were lysed with lysis buffer (2% SDS, 50mM Tris-HCl pH 8.5, 10mM TCEP, 40mM chloroacetamide and protease inhibitor cocktail tablet [EDTA-free, Roche]). Samples were incubated for 5 minutes at 95°C before sonication with Sonic Vibra Cell at 1s ON/ 1s OFF pulse for 30s at a maximal amplitude of 30% to shear genomic DNA. After sonication, samples were incubated for 10min at 95°C. Proteins were precipitated using 3 volumes of ice-cold methanol, 1 volume Chloroform and 2.5 volumes ddH2O. After ...