Abstract
It is well established that TDP‐43 accumulates in degenerating neurons in patients with ALS/FTLD, which might affect normal TDP‐43 function. In this issue of The EMBO Journal Xia et al , (2015) show a novel connection between TDP‐43 loss of function and autophagy failure. Using knockdown models of TDP‐43, they observed enhanced autophagosome and lysosome biogenesis through mTORC1 activity inhibition and TFEB activation. Impaired autophagosome–lysosome fusion was also observed, however in an mTORC1‐independent manner. The data identify dysfunctions at multiple stages of the autophagic pathway following TDP‐43 depletion that might represent possible targets of future therapeutic interventions.
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