DCF1 subcellular localization and its function in mitochondria.

Dendritic cell factor 1 (DCF1) is a transmembrane protein that plays important roles in regulating neural stem cell differentiation and dendritic spine formation. Apart from its cytoplasmic functions, DCF1 plays a role in autophagy during the regulation of amyloid precursor proteins. However, the subcellular localization of DCF1 remains unknown. Therefore, in this study, DCF1 tagged with green fluorescent protein was transiently expression in HelaS3 and HEK293T cells. The results showed that DCF1 was widely expressed in different organelles, including the mitochondria, Golgi apparatus, endoplasmic reticulum, endosomes and lysosomes. An iodixanol step gradient further confirmed that DCF1 is localized to the mitochondria, endosomes, lysosomes, endoplasmic reticulum, and proteasome. Finally, functional analysis of the mitochondria revealed that DCF1 affected the expression and localization of MGST1. This study presents a comprehensive evaluation of the subcellular localization of DCF1, which provides important information on complex functions mediated by DCF1.

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