Crucial role of p53-dependent cellular senescence in suppression of Pten-deficient tumorigenesis (original) (raw)
- Letter
- Published: 04 August 2005
- Lloyd C. Trotman1,2,
- David Shaffer1,3,
- Hui-Kuan Lin1,2,
- Zohar A. Dotan1,2,
- Masaru Niki1,2,
- Jason A. Koutcher3,
- Howard I. Scher3,
- Thomas Ludwig4,
- William Gerald2,
- Carlos Cordon-Cardo2 &
- …
- Pier Paolo Pandolfi1,2
Nature volume 436, pages 725–730 (2005)Cite this article
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Abstract
Cellular senescence has been theorized to oppose neoplastic transformation triggered by activation of oncogenic pathways in vitro1,2,3, but the relevance of senescence in vivo has not been established. The PTEN and p53 tumour suppressors are among the most commonly inactivated or mutated genes in human cancer including prostate cancer4,5. Although they are functionally distinct, reciprocal cooperation has been proposed, as PTEN is thought to regulate p53 stability, and p53 to enhance PTEN transcription6,7,8,9,10. Here we show that conditional inactivation of Trp53 in the mouse prostate fails to produce a tumour phenotype, whereas complete Pten inactivation in the prostate triggers non-lethal invasive prostate cancer after long latency. Strikingly, combined inactivation of Pten and Trp53 elicits invasive prostate cancer as early as 2 weeks after puberty and is invariably lethal by 7 months of age. Importantly, acute Pten inactivation induces growth arrest through the p53-dependent cellular senescence pathway both in vitro and in vivo, which can be fully rescued by combined loss of Trp53. Furthermore, we detected evidence of cellular senescence in specimens from early-stage human prostate cancer. Our results demonstrate the relevance of cellular senescence in restricting tumorigenesis in vivo and support a model for cooperative tumour suppression in which p53 is an essential failsafe protein of _Pten_-deficient tumours.
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Acknowledgements
We thank T. Maeda and T. Jacks for helpful suggestions; D. Peeper, C. Schmitt and M. Serrano for exchanging unpublished data and coordinating the submission of manuscripts; N. Hay, U. Greber and S. Hemmi for reagents; L. Cai and L. DiSantis for critical reading and editing of the manuscript; other members of the Pandolfi lab for advice and discussion; K. Manova and C. Farrell from the Molecular Cytology Core Facility for assistance with IHC analysis; and C. Le, C. Matei, D. Procissi and I. Buchanan for MRI analysis. This work was supported by NIH grants to P.P.P.
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Authors and Affiliations
- Cancer Biology and Genetics Program,
Zhenbang Chen, Lloyd C. Trotman, David Shaffer, Hui-Kuan Lin, Zohar A. Dotan, Masaru Niki & Pier Paolo Pandolfi - Department of Pathology,
Zhenbang Chen, Lloyd C. Trotman, Hui-Kuan Lin, Zohar A. Dotan, Masaru Niki, William Gerald, Carlos Cordon-Cardo & Pier Paolo Pandolfi - Departments of Medicine, Radiology and Medical Physics, Memorial Sloan-Kettering Cancer Center, Sloan-Kettering Institute, 1275 York Avenue, New York, 10021, New York, USA
David Shaffer, Jason A. Koutcher & Howard I. Scher - Department of Anatomy and Cell Biology, Institute of Cancer Genetics, Columbia University, 1150 St Nicholas Avenue, New York, 10032, New York, USA
Thomas Ludwig
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Supplementary information
Supplementary Methods
This file contains the experimental methods mentioned in the text, but data obtained are presented as the supplementary figures. The methods detailed include adenovirus for the infection of MEFs with Adenovirus expressing Cre, and autopsy and histopathology for the standard procedures of slide preparation from paraffin-embedded tissues. (DOC 32 kb)
Supplementary Figure Legends
This file contains figure legends for Supplementary Figure S1-S6 and Supplementary Table S1. This text will help readers to understand the experimental procedures and the conclusions in the text. (DOC 40 kb)
Supplementary Figure S1
Scheme of Pten and Trp53 conditional knockout alleles. (PDF 70 kb)
Supplementary Figure S2
Specificity of recombination. (PDF 5004 kb)
Supplementary Figure S3
In vitro modelling of acute loss of Pten in MEFs. (PDF 1181 kb)
Supplementary Figure S4
In vivo status of proliferation and signalling markers in the prostates of the indicated mutants and wt mice. (PDF 5017 kb)
Supplementary Figure S5
In vitro senescence analysis. (PDF 4291 kb)
Supplementary Figure S6
a, AP lobes of indicated genotypes reveal necessity for complete Pten loss for induction of senescence as measured by β-gal activity. Bars, 50µm. b, low magnifications of AP stained for β-gal activity from wt, Pten null and Pten-Trp53 double null mice. Bar, 10µm. (PDF 3920 kb)
Supplementary Table S1
Cryosections prepared from twelve different human radical prostatectomy specimens (collected under IRB approval) were analyzed for senescence with β-gal staining. (PDF 26 kb)
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Chen, Z., Trotman, L., Shaffer, D. et al. Crucial role of p53-dependent cellular senescence in suppression of Pten-deficient tumorigenesis.Nature 436, 725–730 (2005). https://doi.org/10.1038/nature03918
- Received: 23 February 2005
- Accepted: 15 June 2005
- Issue Date: 04 August 2005
- DOI: https://doi.org/10.1038/nature03918
Editorial Summary
Cell senescence and cancer
Cellular senescence, a growth-arrest program that limits the lifespan of mammalian cells and prevents unlimited cell proliferation, is attracting considerable interest because of its links to tumour suppression. Using a mouse model in which the oncogene Ras is activated in the haematopoietic compartment of bone marrow, Braig et al. show that cellular senescence can block lymphoma development. Genetic inactivation of the histone methyltransferase Suv39h1 that controls senescence by ‘epigenetic’ modification of DNA-associated proteins, or a pharmacological approach that mimics loss of this enzyme, allow the formation of malignant lymphomas in response to oncogenic Ras. This work has important implications for both tumour development and tumour therapy. Michaloglou et al. report that oncogene-induced senescence may be a physiologically important process in humans, keeping moles in a benign state for many years: unchecked they develop into malignant melanomas. Chen et al. also find that cellular senescence blocks tumorigenesis in vivo: they show that acting together, the p53 tumour suppressor and the cellular senescence system can prevent prostate cancer induction in mice by the PTEN mutation. Collado et al. show that cellular senescence is a defining feature of Ras-initiated premalignant tumours; this could prove valuable in the diagnosis and prognosis of cancer.
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