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- W4385264539 abstract "Abstract Lysosomes function as a primary site for catabolism and cellular signaling. These organelles digest a variety of substrates received through endocytosis, secretion and autophagy with the help of resident acid hydrolases. Lysosomal enzymes are folded in the endoplasmic reticulum (ER) and trafficked to lysosomes via Golgi and endocytic routes. The inability of hydrolase trafficking due to mutations or mutations in its receptor or cofactor leads to cargo accumulation (storage) in lysosomes, resulting in lysosome storage disorder (LSD). In Gaucher disease (GD), the lysosomes accumulate glucosylceramide because of low β‐glucocerebrosidase (β‐GC) activity that causes lysosome enlargement/dysfunction. We hypothesize that improving the trafficking of mutant β‐GC to lysosomes may improve the lysosome function in GD. RNAi screen using high throughput based β‐GC activity assay followed by reporter trafficking assay utilizing β‐GC‐mCherry led to the identification of nine potential phosphatases. Depletion of these phosphatases in HeLa cells enhanced the β‐GC activity by increasing the folding and trafficking of Gaucher mutants to the lysosomes. Consistently, the lysosomes in primary fibroblasts from GD patients restored their β‐GC activity upon the knockdown of these phosphatases. Thus, these studies provide evidence that altering phosphatome activity is an alternative therapeutic strategy to restore the lysosome function in GD." @default.
- W4385264539 created "2023-07-27" @default.
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- W4385264539 date "2023-07-25" @default.
- W4385264539 modified "2023-10-18" @default.
- W4385264539 title "Restoration of <scp>β‐GC</scp> trafficking improves the lysosome function in Gaucher disease" @default.
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- W4385264539 doi "https://doi.org/10.1111/tra.12911" @default.
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