Evidence map›Paper›PMID 25639242›Full record

ArticleCurrent biology : CB2015

Nitrogen regulates AMPK to control TORC1 signaling.

Elizabeth Davie, Gabriella M A Forte, Janni Petersen

Open access · hybridAbstract read
In one paragraph

Article in Current biology : CB, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed, 1 pooled it
4.1field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

55 citing papers in PubMed, 1 synthesis or guideline pooled it, 95 citations in OpenAlex.

  1. Pooled it
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  11. Linking ROS Levels to Autophagy: The Key Role of AMPK.Antioxidants (Basel, Switzerland) · 2023
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  12. Effect and mechanism ofIntegrative medicine research · 2023
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  16. The Role of GmSnRK1-GmNodH Module in Regulating Soybean Nodulation Capacity.International journal of molecular sciences · 2023
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 2 countries.

Elizabeth DavieFaculty of Life Sciences, University of Manchester, C.4255 Michael Smith Building, Oxford Road, Manchester M13 9PT, UK.
Gabriella M A ForteFaculty of Life Sciences, University of Manchester, C.4255 Michael Smith Building, Oxford Road, Manchester M13 9PT, UK.
Janni PetersenFaculty of Life Sciences, University of Manchester, C.4255 Michael Smith Building, Oxford Road, Manchester M13 9PT, UK; Flinders Centre for Innovation in Cancer, School of Medicine, Flinders University, Adelaide, SA 5001, Australia. Electronic address: janni.petersen@flinders.edu.au.
University of Manchester · GB

Funding

Cancer Research UK 11178Cancer Research UK C10888/A11178Wellcome Trust
6 · The paper itself

Abstract

backgroundCell growth and cell-cycle progression are tightly coordinated to enable cells to adjust their size (timing of division) to the demands of proliferation in varying nutritional environments. In fission yeast, nitrogen stress results in sustained proliferation at a reduced size.

resultsHere, we show that cells can sense nitrogen stress to reduce target of rapamycin complex-1 (TORC1) activity. Nitrogen-stress-induced TORC1 inhibition differs from amino-acid-dependent control of TORC1 and requires the Ssp2 (AMPKα) kinase, the Tsc1/2 complex, and Rhb1 GTPase. Importantly, the β and γ regulatory subunits of AMPK are not required to control cell division in response to nitrogen stress, providing evidence for a nitrogen-sensing mechanism that is independent of changes in intracellular ATP/AMP levels. The CaMKK homolog Ssp1 is constitutively required for phosphorylation of the AMPKα(Ssp2) T loop. However, we find that a second homolog CaMKK(Ppk34) is specifically required to stimulate AMPKα(Ssp2) activation in response to nitrogen stress. Finally, ammonia also controls mTORC1 activity in human cells; mTORC1 is activated upon the addition of ammonium to glutamine-starved Hep3B cancer cells.

conclusionsThe alternative nitrogen source ammonia can simulate TORC1 activity to support growth and division under challenging nutrient settings, a situation often seen in cancer.

Indexed as

Signal TransductionCell DivisionMechanistic Target of Rapamycin Complex 1Multiprotein ComplexesNitrogenPhosphorylationProtein Serine-Threonine KinasesSchizosaccharomycesSchizosaccharomyces pombe ProteinsTOR Serine-Threonine KinasesMechanistic Target of Rapamycin Complex 1Multiprotein ComplexesNitrogenProtein Serine-Threonine KinasesSchizosaccharomyces pombe ProteinsSsp2 protein, S pombeTOR Serine-Threonine Kinases

Identifiers

PMID25639242
PMCPMC4331286
OpenAlexW1999849548

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.