title: Mind the GAP: Wnt steps onto the mTORC1 train.
abstract: The TSC1/2 tumor-suppressor complex controls protein synthesis through the regulation of mTOR. In this issue of Cell, Inoki et al. (2006) report that the kinases GSK3 and AMPK cooperate in the activation of TSC2 to inhibit mTOR activity. Surprisingly, the phosphorylation of TSC2 by GSK3 is markedly suppressed by Wnt signaling. This suggests that components of the mTOR pathway may be therapeutic targets for diseases linked to hyperactive Wnt signaling.
authors.affiliation: Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.
authors.forename: Andrew Y
authors.initials: AY
authors.lastname: Choo
authors.forename: Philippe P
authors.initials: PP
authors.lastname: Roux
authors.forename: John
authors.initials: J
authors.lastname: Blenis
mesh_terms: D055372:AMP-Activated Protein Kinases; D048868:Adaptor Proteins, Signal Transducing; D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000627:therapeutic use; D045744:Cell Line, Tumor; D020690:GTPase-Activating Proteins / Q000378:metabolism*; D038362:Glycogen Synthase Kinase 3 / Q000378:metabolism*; D006801:Humans; D008325:Mammary Neoplasms, Experimental / Q000188:drug therapy / Q000235:genetics / Q000378:metabolism; D051379:Mice; D009097:Multienzyme Complexes / Q000378:metabolism; D046912:Multiprotein Complexes / Q000378:metabolism*; D010766:Phosphorylation; D011494:Protein Kinases / Q000737:chemistry / Q000378:metabolism; D017346:Protein Serine-Threonine Kinases / Q000378:metabolism; D011506:Proteins / Q000737:chemistry / Q000378:metabolism; D000076223:Regulatory-Associated Protein of mTOR; D015398:Signal Transduction; D020123:Sirolimus / Q000627:therapeutic use; D058570:TOR Serine-Threonine Kinases; D000077004:Tuberous Sclerosis Complex 1 Protein; D000077005:Tuberous Sclerosis Complex 2 Protein; D025521:Tumor Suppressor Proteins / Q000378:metabolism*; D051153:Wnt Proteins / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism*
chemical_list: D048868:Adaptor Proteins, Signal Transducing; D000903:Antibiotics, Antineoplastic; D020690:GTPase-Activating Proteins; D009097:Multienzyme Complexes; D046912:Multiprotein Complexes; D011506:Proteins; C463659:RPTOR protein, human; D000076223:Regulatory-Associated Protein of mTOR; C000624650:TSC1 protein, human; C000624653:TSC2 protein, human; C000624651:Tsc1 protein, mouse; C000624654:Tsc2 protein, mouse; D000077004:Tuberous Sclerosis Complex 1 Protein; D000077005:Tuberous Sclerosis Complex 2 Protein; D025521:Tumor Suppressor Proteins; D051153:Wnt Proteins; D011494:Protein Kinases; C546842:MTOR protein, human; C546843:mTOR protein, mouse; D017346:Protein Serine-Threonine Kinases; D058570:TOR Serine-Threonine Kinases; D038362:Glycogen Synthase Kinase 3; D055372:AMP-Activated Protein Kinases; D020123:Sirolimus