Abstract:
:We used high-resolution mass spectrometry to map the cytotoxic T lymphocyte (CTL) proteome and the effect of the metabolic checkpoint kinase mTORC1 on CTLs. The CTL proteome was dominated by metabolic regulators and granzymes, and mTORC1 selectively repressed and promoted expression of a subset of CTL proteins (~10%). These included key CTL effector molecules, signaling proteins and a subset of metabolic enzymes. Proteomic data highlighted the potential for negative control of the production of phosphatidylinositol (3,4,5)-trisphosphate (PtdIns(3,4,5)P3) by mTORC1 in CTLs. mTORC1 repressed PtdIns(3,4,5)P3 production and determined the requirement for mTORC2 in activation of the kinase Akt. Our unbiased proteomic analysis thus provides comprehensive understanding of CTL identity and the control of CTL function by mTORC1.
journal_name
Nat Immunoljournal_title
Nature immunologyauthors
Hukelmann JL,Anderson KE,Sinclair LV,Grzes KM,Murillo AB,Hawkins PT,Stephens LR,Lamond AI,Cantrell DAdoi
10.1038/ni.3314subject
Has Abstractpub_date
2016-01-01 00:00:00pages
104-12issue
1eissn
1529-2908issn
1529-2916pii
ni.3314journal_volume
17pub_type
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