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• W2901161128 abstract "Abstract The microtubule-organizing centre (MTOC) is repositioned to the centre of the contacted cell surface, the immunological synapse, during T cell activation. However, our understanding of its molecular mechanism remains limited. Here, we found that the microtubule plus-end tracking cytoplasmic linker protein 170 (CLIP-170) plays a novel role in MTOC repositioning using fluorescence imaging. Inhibition of CLIP-170 phosphorylation impaired both MTOC repositioning and interleukin-2 (IL-2) expression. T cell stimulation induced some fraction of dynein to colocalise with CLIP-170 and undergo plus-end tracking. Concurrently, it increased dynein in minus-end-directed movement. It also increased dynein relocation to the centre of the contact surface. Dynein not colocalised with CLIP-170 showed both an immobile state and minus-end-directed movement at a velocity in good agreement with the velocity of MTOC repositioning, which suggests that dynein at the immunological synapse may pull the microtubules and the MTOC. Although CLIP-170 is phosphorylated by AMP-activated protein kinase (AMPK) irrespective of stimulation, phosphorylated CLIP-170 is essential for dynein recruitment to plus-end tracking and for dynein relocation. This indicates that dynein relocation results from coexistence of plus-end- and minus-end-directed translocation. In conclusion, CLIP-170 plays an indispensable role in MTOC repositioning and full activation of T cells by regulating dynein localisation." @default.
• W2901161128 created "2018-11-29" @default.
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• W2901161128 date "2018-11-28" @default.
• W2901161128 modified "2023-10-17" @default.
• W2901161128 title "CLIP-170 is essential for MTOC repositioning during T cell activation by regulating dynein localisation on the cell surface" @default.
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• W2901161128 doi "https://doi.org/10.1038/s41598-018-35593-z" @default.
• W2901161128 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6261991" @default.
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