TUFT1 interacts with RABGAP1 and regulates mTORC1 signaling.

Kawasaki N, Isogaya K, Dan S, Yamori T, Takano H, Yao R, Morishita Y, Taguchi L, Morikawa M, Heldin CH, Noda T, Ehata S, Miyazono K, Koinuma D

Cell Discov 4 (-) 1 [2018-01-09; online 2018-01-09]

The mammalian target of rapamycin (mTOR) pathway is commonly activated in human cancers. The activity of mTOR complex 1 (mTORC1) signaling is supported by the intracellular positioning of cellular compartments and vesicle trafficking, regulated by Rab GTPases. Here we showed that tuftelin 1 (TUFT1) was involved in the activation of mTORC1 through modulating the Rab GTPase-regulated process. TUFT1 promoted tumor growth and metastasis. Consistently, the expression of TUFT1 correlated with poor prognosis in lung, breast and gastric cancers. Mechanistically, TUFT1 physically interacted with RABGAP1, thereby modulating intracellular lysosomal positioning and vesicular trafficking, and promoted mTORC1 signaling. In addition, expression of

Affiliated researcher

PubMed 29423269

DOI 10.1038/s41421-017-0001-2

Crossref 10.1038/s41421-017-0001-2

pii: 1
pmc: PMC5798889


Publications 7.1.2