1
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Tschodu D, Lippoldt J, Gottheil P, Wegscheider AS, Käs JA, Niendorf A. Re-evaluation of publicly available gene-expression databases using machine-learning yields a maximum prognostic power in breast cancer. Sci Rep 2023; 13:16402. [PMID: 37798300 PMCID: PMC10556090 DOI: 10.1038/s41598-023-41090-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 08/22/2023] [Indexed: 10/07/2023] Open
Abstract
Gene expression signatures refer to patterns of gene activities and are used to classify different types of cancer, determine prognosis, and guide treatment decisions. Advancements in high-throughput technology and machine learning have led to improvements to predict a patient's prognosis for different cancer phenotypes. However, computational methods for analyzing signatures have not been used to evaluate their prognostic power. Contention remains on the utility of gene expression signatures for prognosis. The prevalent approaches include random signatures, expert knowledge, and machine learning to construct an improved signature. We unify these approaches to evaluate their prognostic power. Re-evaluation of publicly available gene-expression data from 8 databases with 9 machine-learning models revealed previously unreported results. Gene-expression signatures are confirmed to be useful in predicting a patient's prognosis. Convergent evidence from [Formula: see text] 10,000 signatures implicates a maximum prognostic power. By calculating the concordance index, which measures how well patients with different prognoses can be discriminated, we show that a signature can correctly discriminate patients' prognoses no more than 80% of the time. Additionally, we show that more than 50% of the potentially available information is still missing at this value. We surmise that an accurate prognosis must incorporate molecular, clinical, histological, and other complementary factors.
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Affiliation(s)
- Dimitrij Tschodu
- Peter Debye Institute for Soft Matter Physics, Leipzig University, 04103, Leipzig, Germany.
| | - Jürgen Lippoldt
- Peter Debye Institute for Soft Matter Physics, Leipzig University, 04103, Leipzig, Germany
| | - Pablo Gottheil
- Peter Debye Institute for Soft Matter Physics, Leipzig University, 04103, Leipzig, Germany
| | - Anne-Sophie Wegscheider
- Institute for Histology, Cytology and Molecular Diagnostics, MVZ Prof. Dr. med. A. Niendorf Pathologie Hamburg-West GmbH, 22767, Hamburg, Germany
| | - Josef A Käs
- Peter Debye Institute for Soft Matter Physics, Leipzig University, 04103, Leipzig, Germany.
| | - Axel Niendorf
- Institute for Histology, Cytology and Molecular Diagnostics, MVZ Prof. Dr. med. A. Niendorf Pathologie Hamburg-West GmbH, 22767, Hamburg, Germany.
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2
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Ujvari B, Raven N, Madsen T, Klaassen M, Dujon AM, Schultz AG, Nunney L, Lemaître J, Giraudeau M, Thomas F. Telomeres, the loop tying cancer to organismal life-histories. Mol Ecol 2022; 31:6273-6285. [PMID: 35510763 PMCID: PMC9790343 DOI: 10.1111/mec.16488] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 03/04/2022] [Accepted: 03/30/2022] [Indexed: 01/31/2023]
Abstract
Recent developments in telomere and cancer evolutionary ecology demonstrate a very complex relationship between the need of tissue repair and controlling the emergence of abnormally proliferating cells. The trade-off is balanced by natural and sexual selection and mediated via both intrinsic and environmental factors. Here, we explore the effects of telomere-cancer dynamics on life history traits and strategies as well as on the cumulative effects of genetic and environmental factors. We show that telomere-cancer dynamics constitute an incredibly complex and multifaceted process. From research to date, it appears that the relationship between telomere length and cancer risk is likely nonlinear with good evidence that both (too) long and (too) short telomeres can be associated with increased cancer risk. The ability and propensity of organisms to respond to the interplay of telomere dynamics and oncogenic processes, depends on the combination of its tissue environments, life history strategies, environmental challenges (i.e., extreme climatic conditions), pressure by predators and pollution, as well as its evolutionary history. Consequently, precise interpretation of telomere-cancer dynamics requires integrative and multidisciplinary approaches. Finally, incorporating information on telomere dynamics and the expression of tumour suppressor genes and oncogenes could potentially provide the synergistic overview that could lay the foundations to study telomere-cancer dynamics at ecosystem levels.
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Affiliation(s)
- Beata Ujvari
- Centre for Integrative EcologySchool of Life and Environmental SciencesDeakin UniversityGeelongVictoriaAustralia
| | - Nynke Raven
- Centre for Integrative EcologySchool of Life and Environmental SciencesDeakin UniversityGeelongVictoriaAustralia
| | - Thomas Madsen
- Centre for Integrative EcologySchool of Life and Environmental SciencesDeakin UniversityGeelongVictoriaAustralia
| | - Marcel Klaassen
- Centre for Integrative EcologySchool of Life and Environmental SciencesDeakin UniversityGeelongVictoriaAustralia
| | - Antoine M. Dujon
- Centre for Integrative EcologySchool of Life and Environmental SciencesDeakin UniversityGeelongVictoriaAustralia
| | - Aaron G. Schultz
- Centre for Integrative EcologySchool of Life and Environmental SciencesDeakin UniversityGeelongVictoriaAustralia
| | - Leonard Nunney
- Department of Evolution, Ecology and Organismal BiologyUniversity of California, RiversideRiversideCaliforniaUSA
| | - Jean‐François Lemaître
- Université de LyonLyonFrance,Laboratoire de Biométrie et Biologie ÉvolutiveUniversité Lyon 1CNRSUMR5558VilleurbanneFrance
| | - Mathieu Giraudeau
- CREEC/CANECEV (CREES)MIVEGECUnité Mixte de RecherchesIRD 224–CNRS 5290–Université de MontpellierMontpellierFrance,LIENSsUMR 7266 CNRS‐La Rochelle UniversitéLa RochelleFrance
| | - Frédéric Thomas
- CREEC/CANECEV (CREES)MIVEGECUnité Mixte de RecherchesIRD 224–CNRS 5290–Université de MontpellierMontpellierFrance
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3
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Wu DJ. Oversupply of Limiting Cell Resources and the Evolution of Cancer Cells: A Review. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.653622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Cancer prevention is superior to cancer treatment—indeed, understanding and controlling cancer risk is a key question in the fields of applied ecology and evolutionary oncology. Ecological cancer risk models offer the dual benefit of being generalizable across cancer types, and unveiling common mechanisms underlying cancer development and spread. Understanding the biological mechanisms of cancer risk may also guide the design of interventions to prevent cancer. Ecological considerations are central to many of these mechanisms; as one example, the ecologically-based hypothesis of metabolic cancer suppression posits that restricted vascular supply of limiting resources to somatic tissues normally suppresses the evolution of somatic cells toward cancer. Here we present a critical review of published evidence relevant to this hypothesis, and we conclude that there is substantial evidence that cancer risk does increase with an abnormal excess of limiting cell resources, including both dietary macronutrients as well as certain micronutrients.
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4
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Boutry J, Dujon AM, Gerard AL, Tissot S, Macdonald N, Schultz A, Biro PA, Beckmann C, Hamede R, Hamilton DG, Giraudeau M, Ujvari B, Thomas F. Ecological and Evolutionary Consequences of Anticancer Adaptations. iScience 2020; 23:101716. [PMID: 33241195 PMCID: PMC7674277 DOI: 10.1016/j.isci.2020.101716] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Cellular cheating leading to cancers exists in all branches of multicellular life, favoring the evolution of adaptations to avoid or suppress malignant progression, and/or to alleviate its fitness consequences. Ecologists have until recently largely neglected the importance of cancer cells for animal ecology, presumably because they did not consider either the potential ecological or evolutionary consequences of anticancer adaptations. Here, we review the diverse ways in which the evolution of anticancer adaptations has significantly constrained several aspects of the evolutionary ecology of multicellular organisms at the cell, individual, population, species, and ecosystem levels and suggest some avenues for future research.
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Affiliation(s)
- Justine Boutry
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224–CNRS 5290–Université de Montpellier, Montpellier, France
| | - Antoine M. Dujon
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224–CNRS 5290–Université de Montpellier, Montpellier, France
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia France
| | - Anne-Lise Gerard
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224–CNRS 5290–Université de Montpellier, Montpellier, France
| | - Sophie Tissot
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224–CNRS 5290–Université de Montpellier, Montpellier, France
| | - Nick Macdonald
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia France
| | - Aaron Schultz
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia France
| | - Peter A. Biro
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia France
| | - Christa Beckmann
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia France
- School of Science, Western Sydney University, Parramatta, NSW, Australia
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
| | - Rodrigo Hamede
- School of Natural Sciences, University of Tasmania, Hobart, TAS, Australia
| | - David G. Hamilton
- School of Natural Sciences, University of Tasmania, Hobart, TAS, Australia
| | - Mathieu Giraudeau
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224–CNRS 5290–Université de Montpellier, Montpellier, France
| | - Beata Ujvari
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia France
- School of Natural Sciences, University of Tasmania, Hobart, TAS, Australia
| | - Frédéric Thomas
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224–CNRS 5290–Université de Montpellier, Montpellier, France
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5
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Gitschlag BL, Tate AT, Patel MR. Nutrient status shapes selfish mitochondrial genome dynamics across different levels of selection. eLife 2020; 9:56686. [PMID: 32959778 PMCID: PMC7508553 DOI: 10.7554/elife.56686] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 08/17/2020] [Indexed: 12/23/2022] Open
Abstract
Cooperation and cheating are widespread evolutionary strategies. While cheating confers an advantage to individual entities within a group, competition between groups favors cooperation. Selfish or cheater mitochondrial DNA (mtDNA) proliferates within hosts while being selected against at the level of host fitness. How does environment shape cheater dynamics across different selection levels? Focusing on food availability, we address this question using heteroplasmic Caenorhabditis elegans. We find that the proliferation of selfish mtDNA within hosts depends on nutrient status stimulating mtDNA biogenesis in the developing germline. Interestingly, mtDNA biogenesis is not sufficient for this proliferation, which also requires the stress-response transcription factor FoxO/DAF-16. At the level of host fitness, FoxO/DAF-16 also prevents food scarcity from accelerating the selection against selfish mtDNA. This suggests that the ability to cope with nutrient stress can promote host tolerance of cheaters. Our study delineates environmental effects on selfish mtDNA dynamics at different levels of selection.
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Affiliation(s)
- Bryan L Gitschlag
- Department of Biological Sciences, Vanderbilt University, Nashville, United States
| | - Ann T Tate
- Department of Biological Sciences, Vanderbilt University, Nashville, United States
| | - Maulik R Patel
- Department of Biological Sciences, Vanderbilt University, Nashville, United States.,Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, United States.,Diabetes Research and Training Center, Vanderbilt University School of Medicine, Nashville, United States
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6
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Reynolds BA, Oli MW, Oli MK. Eco-oncology: Applying ecological principles to understand and manage cancer. Ecol Evol 2020; 10:8538-8553. [PMID: 32884638 PMCID: PMC7452771 DOI: 10.1002/ece3.6590] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 06/15/2020] [Accepted: 06/17/2020] [Indexed: 12/25/2022] Open
Abstract
Cancer is a disease of single cells that expresses itself at the population level. The striking similarities between initiation and growth of tumors and dynamics of biological populations, and between metastasis and ecological invasion and community dynamics suggest that oncology can benefit from an ecological perspective to improve our understanding of cancer biology. Tumors can be viewed as complex, adaptive, and evolving systems as they are spatially and temporally heterogeneous, continually interacting with each other and with the microenvironment and evolving to increase the fitness of the cancer cells. We argue that an eco-evolutionary perspective is essential to understand cancer biology better. Furthermore, we suggest that ecologically informed therapeutic approaches that combine standard of care treatments with strategies aimed at decreasing the evolutionary potential and fitness of neoplastic cells, such as disrupting cell-to-cell communication and cooperation, and preventing successful colonization of distant organs by migrating cancer cells, may be effective in managing cancer as a chronic condition.
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Affiliation(s)
- Brent A. Reynolds
- Department of NeurosurgeryCollege of MedicineUniversity of FloridaGainesvilleFLUSA
| | - Monika W. Oli
- Department of Microbiology and Cell ScienceInstitute of Food and Agricultural SciencesUniversity of FloridaGainesvilleFLUSA
| | - Madan K. Oli
- Department of Wildlife Ecology and ConservationInstitute of Food and Agricultural SciencesUniversity of FloridaGainesvilleFLUSA
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7
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Nawaz S, Trahearn NA, Heindl A, Banerjee S, Maley CC, Sottoriva A, Yuan Y. Analysis of tumour ecological balance reveals resource-dependent adaptive strategies of ovarian cancer. EBioMedicine 2019; 48:224-235. [PMID: 31648981 PMCID: PMC6838425 DOI: 10.1016/j.ebiom.2019.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 07/02/2019] [Accepted: 10/01/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Despite treatment advances, there remains a significant risk of recurrence in ovarian cancer, at which stage it is usually incurable. Consequently, there is a clear need for improved patient stratification. However, at present clinical prognosticators remain largely unchanged due to the lack of reproducible methods to identify high-risk patients. METHODS In high-grade serous ovarian cancer patients with advanced disease, we spatially define a tumour ecological balance of stromal resource and immune hazard using high-throughput image and spatial analysis of routine histology slides. On this basis an EcoScore is developed to classify tumours by a shift in this balance towards cancer-favouring or inhibiting conditions. FINDINGS The EcoScore provides prognostic value stronger than, and independent of, known risk factors. Crucially, the clinical relevance of mutational burden and genomic instability differ under different stromal resource conditions, suggesting that the selective advantage of these cancer hallmarks is dependent on the context of stromal spatial structure. Under a high resource condition defined by a high level of geographical intermixing of cancer and stromal cells, selection appears to be driven by point mutations; whereas, in low resource tumours featured with high hypoxia and low cancer-immune co-localization, selection is fuelled by aneuploidy. INTERPRETATION Our study offers empirical evidence that cancer fitness depends on tumour spatial constraints, and presents a biological basis for developing better assessments of tumour adaptive strategies in overcoming ecological constraints including immune surveillance and hypoxia.
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Affiliation(s)
- Sidra Nawaz
- Centre for Evolution and Cancer, Institute of Cancer Research, London, UK; Division of Molecular Pathology, Institute of Cancer Research, London, UK
| | - Nicholas A Trahearn
- Centre for Evolution and Cancer, Institute of Cancer Research, London, UK; Division of Molecular Pathology, Institute of Cancer Research, London, UK
| | - Andreas Heindl
- Centre for Evolution and Cancer, Institute of Cancer Research, London, UK; Division of Molecular Pathology, Institute of Cancer Research, London, UK
| | | | - Carlo C Maley
- Centre for Evolution and Cancer, Institute of Cancer Research, London, UK; Biodesign Center for Personalized Diagnostics, Arizona State University, Tempe, AZ, USA
| | - Andrea Sottoriva
- Centre for Evolution and Cancer, Institute of Cancer Research, London, UK; Division of Molecular Pathology, Institute of Cancer Research, London, UK
| | - Yinyin Yuan
- Centre for Evolution and Cancer, Institute of Cancer Research, London, UK; Division of Molecular Pathology, Institute of Cancer Research, London, UK.
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8
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Adler FR, Gordon DM. Cancer Ecology and Evolution: Positive interactions and system vulnerability. ACTA ACUST UNITED AC 2019; 17:1-7. [PMID: 32318644 DOI: 10.1016/j.coisb.2019.09.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Parallels of cancer with ecology and evolution have provided new insights into the initiation and spread of cancer, and new approaches to therapy. This review describes those parallels while emphasizing some key contrasts. We argue that cancers are less like invasive species than like native species or even crops that have escaped control, and that ecological control and homeo-static control differ fundamentally through both their ends and their means. From our focus on the role of positive interactions in control processes, we introduce a novel mathematical modeling framework that tracks how individual cell lineages arise, and how the many layers of control break down in the emergence of cancer. The next generation of therapies must continue to look beyond cancers as being created by individual renegade cells and address not only the network of interactions those cells inhabit, but the evolutionary logic that created those interactions and their intrinsic vulnerability.
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Affiliation(s)
- Frederick R Adler
- School of Biological Sciences, University of Utah, 257 South 1400 East, Salt Lake City, UT 84112.,Department of Mathematics, University of Utah, 155 South 1400 East, Salt Lake City, UT 84112
| | - Deborah M Gordon
- Department of Biology, Stanford University, 371 Serra Mall, Stanford, CA 94305-5020
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9
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Ujvari B, Jacqueline C, Misse D, Amar V, Fitzpatrick JC, Jennings G, Beckmann C, Rome S, Biro PA, Gatenby R, Brown J, Almeida L, Thomas F. Obesity paradox in cancer: Is bigger really better? Evol Appl 2019; 12:1092-1095. [PMID: 31293625 PMCID: PMC6597865 DOI: 10.1111/eva.12790] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 03/09/2019] [Accepted: 03/11/2019] [Indexed: 12/13/2022] Open
Abstract
While obesity is widely recognized as a risk factor for cancer, survival among patients with cancer is often higher for obese than for lean individuals. Several hypotheses have been proposed to explain this "obesity paradox," but no consensus has yet emerged. Here, we propose a novel hypothesis to add to this emerging debate which suggests that lean healthy persons present conditions unfavorable to malignant transformation, due to powerful natural defenses, whereby only rare but aggressive neoplasms can emerge and develop. In contrast, obese persons present more favorable conditions for malignant transformation, because of several weight-associated factors and less efficient natural defenses, leading to a larger quantity of neoplasms comprising both nonaggressive and aggressive ones to regularly emerge and progress. If our hypothesis is correct, testing would require the consideration of the raw quantity, not the relative frequency, of aggressive cancers in obese patients compared with lean ones. We also discuss the possibility that in obese persons, nonaggressive malignancies may prevent the subsequent progression of aggressive cancers through negative competitive interactions between tumors.
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Affiliation(s)
- Beata Ujvari
- Centre for Integrative Ecology, School of Life and Environmental SciencesDeakin UniversityDeakinVictoriaAustralia
- School of Natural SciencesUniversity of TasmaniaHobartTasmaniaAustralia
| | - Camille Jacqueline
- Centre de Recherches Ecologiques et Evolutives sur le Cancer/Maladies Infectieuses et Vecteurs: Ecologie, Genéttique, Evolution, et Contrôle, CNRSUniversite de MontpellierMontpellierFrance
| | - Dorothée Misse
- Centre de Recherches Ecologiques et Evolutives sur le Cancer/Maladies Infectieuses et Vecteurs: Ecologie, Genéttique, Evolution, et Contrôle, CNRSUniversite de MontpellierMontpellierFrance
| | - Valentin Amar
- Laboratoire Jacques‐Louis LionsUniversité Paris DescartesParisFrance
| | - Jay C. Fitzpatrick
- Centre for Integrative Ecology, School of Life and Environmental SciencesDeakin UniversityDeakinVictoriaAustralia
| | - Geordie Jennings
- Centre for Integrative Ecology, School of Life and Environmental SciencesDeakin UniversityDeakinVictoriaAustralia
- School of Natural SciencesUniversity of TasmaniaHobartTasmaniaAustralia
| | - Christa Beckmann
- Centre for Integrative Ecology, School of Life and Environmental SciencesDeakin UniversityDeakinVictoriaAustralia
- School of Science and HealthWestern Sydney UniversityParramattaNew South WalesAustralia
| | - Sophie Rome
- CarMeN Laboratory (UMR INSERM 1060‐INRA 1397, INSA), Lyon‐Sud Faculty of MedicineUniversity of LyonLyonFrance
| | - Peter A. Biro
- Centre for Integrative Ecology, School of Life and Environmental SciencesDeakin UniversityDeakinVictoriaAustralia
| | - Robert Gatenby
- Department of RadiologyH. Lee Moffitt Cancer Center & Research InstituteTampaFlorida
| | - Joel Brown
- Department of RadiologyH. Lee Moffitt Cancer Center & Research InstituteTampaFlorida
| | - Luis Almeida
- Laboratoire Jacques‐Louis LionsSorbonne‐Université, CNRS, Université de Paris, InriaParisFrance
| | - Frédéric Thomas
- Centre de Recherches Ecologiques et Evolutives sur le Cancer/Maladies Infectieuses et Vecteurs: Ecologie, Genéttique, Evolution, et Contrôle, CNRSUniversite de MontpellierMontpellierFrance
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10
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Wu DJ, Aktipis A, Pepper JW. Energy oversupply to tissues: a single mechanism possibly underlying multiple cancer risk factors. Evol Med Public Health 2019; 2019:9-16. [PMID: 31893122 PMCID: PMC6379718 DOI: 10.1093/emph/eoz004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 01/15/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Several major risk factors for cancer involve vascular oversupply of energy to affected tissues. These include obesity, diabetes and chronic inflammation. Here, we propose a potential mechanistic explanation for the association between energy oversupply and cancer risk, which we call the metabolic cancer suppression hypothesis: We hypothesize that oncogenesis is normally suppressed by organismal physiology that regulates and strictly limits normal energy supply to somatic cells, and that this protection is removed by abnormal oversupply of energy. METHODOLOGY We evaluate this hypothesis using a computational model of somatic cell evolution to simulate experimental manipulation of the vascular energy supply to a tissue. The model simulates the evolutionary dynamics of somatic cells during oncogenesis. RESULTS In our simulation experiment, we found that under plausible biological assumptions, elevated energy supply to a tissue led to the evolution of elevated energy uptake by somatic cells, leading to the rapid evolution of both defining traits of cancer cells: hyperproliferation, and tissue invasion. CONCLUSIONS AND IMPLICATIONS Our results support the hypothesis of metabolic cancer suppression, suggesting that vascular oversupply of energetic resources to somatic cells removes normal energetic limitations on cell proliferation, and that this accelerates cellular evolution toward cancer. Various predictions of this hypothesis are amenable to empirical testing, and have promising implications for translational research toward clinical cancer prevention.
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Affiliation(s)
- Daniel J Wu
- Department of Biology, Stanford University, Stanford, CA, USA
- Division of Cancer Prevention, National Cancer Institute, Rockville, MD, USA
| | - Athena Aktipis
- Arizona State University, Biodesign Institute, Tempe, AZ, USA
| | - John W Pepper
- Division of Cancer Prevention, National Cancer Institute, Rockville, MD, USA
- Santa Fe Institute, Santa Fe, NM, USA
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11
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Sepp T, Ujvari B, Ewald PW, Thomas F, Giraudeau M. Urban environment and cancer in wildlife: available evidence and future research avenues. Proc Biol Sci 2019; 286:20182434. [PMID: 30963883 PMCID: PMC6367167 DOI: 10.1098/rspb.2018.2434] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 12/10/2018] [Indexed: 12/23/2022] Open
Abstract
While it is generally known that the risk of several cancers in humans is higher in urban areas compared with rural areas, cancer is often deemed a problem of human societies with modern lifestyles. At the same time, more and more wild animals are affected by urbanization processes and are faced with the need to adapt or acclimate to urban conditions. These include, among other things, increased exposure to an assortment of pollutants (e.g. chemicals, light and noise), novel types of food and new infections. According to the abundant literature available for humans, all of these factors are associated with an increased probability of developing cancerous neoplasias; however, the link between the urban environment and cancer in wildlife has not been discussed in the scientific literature. Here, we describe the available evidence linking environmental changes resulting from urbanization to cancer-related physiological changes in wild animals. We identify the knowledge gaps in this field and suggest future research avenues, with the ultimate aim of understanding how our modern lifestyle affects cancer prevalence in urbanizing wild populations. In addition, we consider the possibilities of using urban wild animal populations as models to study the association between environmental factors and cancer epidemics in humans, as well as to understand the evolution of cancer and defence mechanisms against it.
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Affiliation(s)
- Tuul Sepp
- Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia
| | - Beata Ujvari
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Waurn Ponds, VIC, Australia
| | - Paul W. Ewald
- Department of Biology, University of Louisville, Louisville, KY 40292, USA
| | - Frédéric Thomas
- CREEC, 911 Avenue Agropolis, BP 6450134394 Montpellier Cedex 5, France
- MIVEGEC, UMR IRD/CNRS/UM 5290, 911 Avenue Agropolis, BP 6450134394 Montpellier Cedex 5, France
| | - Mathieu Giraudeau
- CREEC, 911 Avenue Agropolis, BP 6450134394 Montpellier Cedex 5, France
- MIVEGEC, UMR IRD/CNRS/UM 5290, 911 Avenue Agropolis, BP 6450134394 Montpellier Cedex 5, France
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12
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Ramón Y Cajal S, Capdevila C, Hernandez-Losa J, De Mattos-Arruda L, Ghosh A, Lorent J, Larsson O, Aasen T, Postovit LM, Topisirovic I. Cancer as an ecomolecular disease and a neoplastic consortium. Biochim Biophys Acta Rev Cancer 2017; 1868:484-499. [PMID: 28947238 DOI: 10.1016/j.bbcan.2017.09.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 09/19/2017] [Accepted: 09/20/2017] [Indexed: 12/26/2022]
Abstract
Current anticancer paradigms largely target driver mutations considered integral for cancer cell survival and tumor progression. Although initially successful, many of these strategies are unable to overcome the tremendous heterogeneity that characterizes advanced tumors, resulting in the emergence of resistant disease. Cancer is a rapidly evolving, multifactorial disease that accumulates numerous genetic and epigenetic alterations. This results in wide phenotypic and molecular heterogeneity within the tumor, the complexity of which is further amplified through specific interactions between cancer cells and the tumor microenvironment. In this context, cancer may be perceived as an "ecomolecular" disease that involves cooperation between several neoplastic clones and their interactions with immune cells, stromal fibroblasts, and other cell types present in the microenvironment. This collaboration is mediated by a variety of secreted factors. Cancer is therefore analogous to complex ecosystems such as microbial consortia. In the present article, we comment on the current paradigms and perspectives guiding the development of cancer diagnostics and therapeutics and the potential application of systems biology to untangle the complexity of neoplasia. In our opinion, conceptualization of neoplasia as an ecomolecular disease is warranted. Advances in knowledge pertinent to the complexity and dynamics of interactions within the cancer ecosystem are likely to improve understanding of tumor etiology, pathogenesis, and progression. This knowledge is anticipated to facilitate the design of new and more effective therapeutic approaches that target the tumor ecosystem in its entirety.
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Affiliation(s)
- Santiago Ramón Y Cajal
- Translational Molecular Pathology, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain; Pathology Department, Vall d'Hebron Hospital, 08035 Barcelona, Spain; Spanish Biomedical Research Network Centre in Oncology (CIBERONC), Spain.
| | - Claudia Capdevila
- Translational Molecular Pathology, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain
| | - Javier Hernandez-Losa
- Translational Molecular Pathology, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain; Pathology Department, Vall d'Hebron Hospital, 08035 Barcelona, Spain; Spanish Biomedical Research Network Centre in Oncology (CIBERONC), Spain
| | - Leticia De Mattos-Arruda
- Translational Molecular Pathology, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain
| | - Abhishek Ghosh
- Lady Davis Institute, JGH, SMBD, Gerald-Bronfman Department of Oncology, McGill University QC, Montreal H3T 1E2, Canada
| | - Julie Lorent
- Department of Oncology-Pathology, Science for Life Laboratory, Karolinska Institutet, 171 65 Solna, Sweden
| | - Ola Larsson
- Department of Oncology-Pathology, Science for Life Laboratory, Karolinska Institutet, 171 65 Solna, Sweden
| | - Trond Aasen
- Translational Molecular Pathology, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain; Spanish Biomedical Research Network Centre in Oncology (CIBERONC), Spain
| | - Lynne-Marie Postovit
- Cancer Research Institute of Northern Alberta Department of Oncology, University of Alberta, Edmonton, AB, T6G 2E1, Canada
| | - Ivan Topisirovic
- Lady Davis Institute, JGH, SMBD, Gerald-Bronfman Department of Oncology, McGill University QC, Montreal H3T 1E2, Canada
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Draghi C, Viger L, Denis F, Letellier C. How the growth rate of host cells affects cancer risk in a deterministic way. CHAOS (WOODBURY, N.Y.) 2017; 27:093101. [PMID: 28964154 DOI: 10.1063/1.5000713] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
It is well known that cancers are significantly more often encountered in some tissues than in other ones. In this paper, by using a deterministic model describing the interactions between host, effector immune and tumor cells at the tissue level, we show that this can be explained by the dependency of tumor growth on parameter values characterizing the type as well as the state of the tissue considered due to the "way of life" (environmental factors, food consumption, drinking or smoking habits, etc.). Our approach is purely deterministic and, consequently, the strong correlation (r = 0.99) between the number of detectable growing tumors and the growth rate of cells from the nesting tissue can be explained without evoking random mutation arising during DNA replications in nonmalignant cells or "bad luck". Strategies to limit the mortality induced by cancer could therefore be well based on improving the way of life, that is, by better preserving the tissue where mutant cells randomly arise.
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Affiliation(s)
- Clément Draghi
- Normandie Université, CORIA, Avenue de l'Université, F-76800 Saint-Etienne du Rouvray, France
| | - Louise Viger
- Normandie Université, CORIA, Avenue de l'Université, F-76800 Saint-Etienne du Rouvray, France
| | - Fabrice Denis
- Normandie Université, CORIA, Avenue de l'Université, F-76800 Saint-Etienne du Rouvray, France
| | - Christophe Letellier
- Normandie Université, CORIA, Avenue de l'Université, F-76800 Saint-Etienne du Rouvray, France
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14
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Jacqueline C, Biro PA, Beckmann C, Moller AP, Renaud F, Sorci G, Tasiemski A, Ujvari B, Thomas F. Cancer: A disease at the crossroads of trade-offs. Evol Appl 2017; 10:215-225. [PMID: 28250806 PMCID: PMC5322410 DOI: 10.1111/eva.12444] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 11/01/2016] [Indexed: 12/14/2022] Open
Abstract
Central to evolutionary theory is the idea that living organisms face phenotypic and/or genetic trade-offs when allocating resources to competing life-history demands, such as growth, survival, and reproduction. These trade-offs are increasingly considered to be crucial to further our understanding of cancer. First, evidences suggest that neoplastic cells, as any living entities subject to natural selection, are governed by trade-offs such as between survival and proliferation. Second, selection might also have shaped trade-offs at the organismal level, especially regarding protective mechanisms against cancer. Cancer can also emerge as a consequence of additional trade-offs in organisms (e.g., eco-immunological trade-offs). Here, we review the wide range of trade-offs that occur at different scales and their relevance for understanding cancer dynamics. We also discuss how acknowledging these phenomena, in light of human evolutionary history, may suggest new guidelines for preventive and therapeutic strategies.
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Affiliation(s)
- Camille Jacqueline
- CREECMontpellier Cedex 5France
- MIVEGECUMR IRD/CNRS/UM 5290Montpellier Cedex 5France
| | - Peter A. Biro
- Centre for Integrative EcologySchool of Life and Environmental SciencesDeakin UniversityWaurn PondsVICAustralia
| | - Christa Beckmann
- Centre for Integrative EcologySchool of Life and Environmental SciencesDeakin UniversityWaurn PondsVICAustralia
| | - Anders Pape Moller
- Ecologie Systématique EvolutionUniversité Paris‐SudCNRSAgroParisTechUniversité Paris‐Saclay, F‐91405 Orsay CedexFrance
| | - François Renaud
- CREECMontpellier Cedex 5France
- MIVEGECUMR IRD/CNRS/UM 5290Montpellier Cedex 5France
| | - Gabriele Sorci
- BiogéoSciencesCNRS UMR 6282Université de BourgogneDijonFrance
| | - Aurélie Tasiemski
- Unité d'EvolutionEcologie et Paléontologie (EEP) Université de Lille 1 CNRS UMR 8198groupe d'Ecoimmunologie des AnnélidesVilleneuve‐d'AscqFrance
| | - Beata Ujvari
- Centre for Integrative EcologySchool of Life and Environmental SciencesDeakin UniversityWaurn PondsVICAustralia
| | - Frédéric Thomas
- CREECMontpellier Cedex 5France
- MIVEGECUMR IRD/CNRS/UM 5290Montpellier Cedex 5France
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15
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Thomas F, Nesse RM, Gatenby R, Gidoin C, Renaud F, Roche B, Ujvari B. Evolutionary Ecology of Organs: A Missing Link in Cancer Development? Trends Cancer 2016; 2:409-415. [DOI: 10.1016/j.trecan.2016.06.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 06/28/2016] [Accepted: 06/29/2016] [Indexed: 12/18/2022]
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16
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Mazzocca A, Ferraro G, Misciagna G, Carr BI. A systemic evolutionary approach to cancer: Hepatocarcinogenesis as a paradigm. Med Hypotheses 2016; 93:132-7. [PMID: 27372872 DOI: 10.1016/j.mehy.2016.05.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 05/21/2016] [Indexed: 12/20/2022]
Abstract
The systemic evolutionary theory of cancer pathogenesis posits that cancer is generated by the de-emergence of the eukaryotic cell system and by the re-emergence of its archaea (genetic material and cytoplasm) and prokaryotic (mitochondria) subsystems with an uncoordinated behavior. This decreased coordination can be caused by a change in the organization of the eukaryote environment (mainly chronic inflammation), damage to mitochondrial DNA and/or to its membrane composition by many agents (e.g. viruses, chemicals, hydrogenated fatty acids in foods) or damage to nuclear DNA that controls mitochondrial energy production or metabolic pathways, including glycolysis. Here, we postulate that the two subsystems (the evolutionarily inherited archaea and the prokaryote) in a eukaryotic differentiated cell are well integrated, and produce the amount of clean energy that is constantly required to maintain the differentiated status. Conversely, when protracted injuries impair cell or tissue organization, the amount of energy necessary to maintain cell differentiation can be restricted, and this may cause gradual de-differentiation of the eukaryotic cell over time. In cirrhotic liver, for example, this process can be favored by reduced oxygen availability to the organ due to an altered vasculature and the fibrotic barrier caused by the disease. Thus, hepatocarcinogenesis is an ideal example to support our hypothesis. When cancer arises, the pre-eukaryote subsystems become predominant, as shown by the metabolic alterations of cancer cells (anaerobic glycolysis and glutamine utilization), and by their capacity for proliferation and invasion, resembling the primitive symbiotic components of the eukaryotic cell.
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Affiliation(s)
- Antonio Mazzocca
- Interdisciplinary Department of Medicine, University of Bari School of Medicine, Piazza G. Cesare, 11, 70124 Bari, Italy.
| | - Giovanni Ferraro
- Interuniversity Department of Physics, Polytechnic of Bari, Via Orabona, 4, 70126 Bari, Italy
| | - Giovanni Misciagna
- Scientific and Ethical Committee, University Hospital Policlinico, Piazza G. Cesare, 11, 70124 Bari, Italy
| | - Brian I Carr
- Izmir Biomedicine and Genome Center, Dokuz Eylul University, 35340 Balcova, Izmir, Turkey
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18
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Tissot T, Arnal A, Jacqueline C, Poulin R, Lefèvre T, Mery F, Renaud F, Roche B, Massol F, Salzet M, Ewald P, Tasiemski A, Ujvari B, Thomas F. Host manipulation by cancer cells: Expectations, facts, and therapeutic implications. Bioessays 2016; 38:276-85. [PMID: 26849295 DOI: 10.1002/bies.201500163] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Similar to parasites, cancer cells depend on their hosts for sustenance, proliferation and reproduction, exploiting the hosts for energy and resources, and thereby impairing their health and fitness. Because of this lifestyle similarity, it is predicted that cancer cells could, like numerous parasitic organisms, evolve the capacity to manipulate the phenotype of their hosts to increase their own fitness. We claim that the extent of this phenomenon and its therapeutic implications are, however, underappreciated. Here, we review and discuss what can be regarded as cases of host manipulation in the context of cancer development and progression. We elaborate on how acknowledging the applicability of these principles can offer novel therapeutic and preventive strategies. The manipulation of host phenotype by cancer cells is one more reason to adopt a Darwinian approach in cancer research.
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Affiliation(s)
- Tazzio Tissot
- CREEC/MIVEGEC, UMR IRD/CNRS/UM 5290, Montpellier, France
| | - Audrey Arnal
- CREEC/MIVEGEC, UMR IRD/CNRS/UM 5290, Montpellier, France
| | | | - Robert Poulin
- Department of Zoology, University of Otago, Dunedin, New Zealand
| | | | - Frédéric Mery
- Evolution, Génomes, Comportement and Ecologie, CNRS, IRD, University of Paris-Sud, Université Paris Saclay, Gif-sur-Yvette, France
| | | | - Benjamin Roche
- CREEC/MIVEGEC, UMR IRD/CNRS/UM 5290, Montpellier, France.,Unité mixte internationale de Modélisation Mathématique et Informatique des Systèmes Complexes, (UMI IRD/UPMC UMMISCO), BondyCedex, France
| | - François Massol
- Université de Lille, UMR 8198, Unité EEP, Ecoimmunology Group, Lille, France
| | - Michel Salzet
- Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse (PRISM) INSERM U1192, Université Lille, Lille, France
| | - Paul Ewald
- Department of Biology and the Program on Disease Evolution, University of Louisville, Louisville, KY, USA
| | - Aurélie Tasiemski
- Université de Lille, UMR 8198, Unité EEP, Ecoimmunology Group, Lille, France
| | - Beata Ujvari
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia
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