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The p38α Stress Kinase Suppresses Aneuploidy Tolerance by Inhibiting Hif-1α.

Cell reports | 2018

Deviating from the normal karyotype dramatically changes gene dosage, in turn decreasing the robustness of biological networks. Consequently, aneuploidy is poorly tolerated by normal somatic cells and acts as a barrier to transformation. Paradoxically, however, karyotype heterogeneity drives tumor evolution and the emergence of therapeutic drug resistance. To better understand how cancer cells tolerate aneuploidy, we focused on the p38 stress response kinase. We show here that p38-deficient cells upregulate glycolysis and avoid post-mitotic apoptosis, leading to the emergence of aneuploid subclones. We also show that p38 deficiency upregulates the hypoxia-inducible transcription factor Hif-1α and that inhibiting Hif-1α restores apoptosis in p38-deficent cells. Because hypoxia and aneuploidy are both barriers to tumor progression, the ability of Hif-1α to promote cell survival following chromosome missegregation raises the possibility that aneuploidy tolerance coevolves with adaptation to hypoxia.

Pubmed ID: 30332653 RIS Download

Research resources used in this publication

Associated grants

  • Agency: Wellcome Trust, United Kingdom
  • Agency: Cancer Research UK, United Kingdom
    Id: 11913
  • Agency: Wellcome Trust, United Kingdom
    Id: 203141
  • Agency: Medical Research Council, United Kingdom
    Id: MR/L006839/1

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This is a list of tools and resources that we have found mentioned in this publication.


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p44/42 MAPK (Erk1/2) Antibody (antibody)

RRID:AB_330744

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Phospho KAP-1 (S824) Antibody (antibody)

RRID:AB_669740

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Anti-p53, phospho (Ser46) Antibody, Unconjugated (antibody)

RRID:AB_10828689

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ATM antibody [Y170] (antibody)

RRID:AB_725574

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DNA PKcs (phospho S2056) antibody - ChIP Grade (antibody)

RRID:AB_869495

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HCT 116 (cell line)

RRID:CVCL_0291

Cell line HCT 116 is a Cancer cell line with a species of origin Homo sapiens (Human)

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DNA PKcs antibody (antibody)

RRID:AB_1209452

This polyclonal targets DNA PKcs antibody

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Adobe Illustrator (software resource)

RRID:SCR_010279

Vector graphics software to create digital graphics, illustrations, and typography for several types of media: print, web, interactive, video, and mobile.

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MetaMorph Microscopy Automation and Image Analysis Software (software resource)

RRID:SCR_002368

Software tool for automated microscope acquisition, device control, and image analysis. Used for integrating dissimilar fluorescent microscope hardware and peripherals into a single custom workstation, while providing all the tools needed to perform analysis of acquired images. Offers user friendly application modules for analysis such as cell signaling, cell counting, and protein expression.

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RRID:SCR_016368

Ultrafast and memory efficient tool for aligning sequencing reads to long reference sequences. Supports gapped, local, and paired end alignment modes. More suited to finding longer, gapped alignments in comparison with original Bowtie method.

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Illumina NextSeq 500 (instrument resource)

RRID:SCR_014983

High-throughput sequencing machine which enables sequencing of exomes, whole genomes, and transcriptomes. It also provides flow cell types, real-time analysis, and integration with Illumina's BaseSpace computing environment.

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FastQ Screen (software resource)

RRID:SCR_000141

Software that allows you to screen a library of sequences in FastQ format against a set of sequence databases so you can see if the composition of the library matches with what you expect.

View all literature mentions

Seahorse Wave (software resource)

RRID:SCR_014526

Software to manage Seahorse XFe24 Analyzer, which measures OCR and ECAR of live cells in a 24-well plate format. Users can create and modify assay templates and analyze and manage data.

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RRID:SCR_002798

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RRID:AB_10890618

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RRID:AB_331212

This monoclonal targets Chk1, phospho (Ser345)

View all literature mentions

Chk1 (G-4) (antibody)

RRID:AB_627257

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View all literature mentions