RÉSUMÉ
Discovery research is the starting point for the development of more effective anti-cancer treatments. It requires an interdisciplinary research environment with first-class infrastructural support in which curiosity-driven research can lead to new concepts for treating cancer. Translating such research findings to clinical practice requires complementary skills and infrastructures, including high-quality clinical facilities, access to patient cohorts and participation of pharma. This complex ecosystem has yielded many new but also "me too" treatment regimens, especially in immuno-oncology resulting in an extremely high pricing of anti-cancer agents. The costs of antibodies, vaccines, and cell therapies charged by pharma stand out although the concepts and methodologies have been largely developed in academia, financed from public funds. Comprehensive Cancer Centres (CCCs) covering a coherent stretch of the cancer research continuum are well-positioned to make these personalized treatments more affordable, but this will require restructuring of the way the translational cancer research continuum is funded.
Sujet(s)
Tumeurs , Humains , Tumeurs/thérapie , Tumeurs/économie , Antinéoplasiques/usage thérapeutique , Antinéoplasiques/économie , /économie ,RÉSUMÉ
Lung cancer cells can escape targeted therapy by switching oncogenic drivers and cell identity.
Sujet(s)
Adénocarcinome pulmonaire , Tumeurs du poumon , Oncogènes , Humains , Tumeurs du poumon/traitement médicamenteux , Tumeurs du poumon/génétique , Adénocarcinome pulmonaire/traitement médicamenteux , Adénocarcinome pulmonaire/génétique , Animaux , SourisRÉSUMÉ
Malignant mesothelioma is a highly aggressive tumor with a survival of only 4-18 months after diagnosis. Treatment options for this disease are limited. Immune checkpoint blockade using ipilimumab and nivolumab has recently been approved as a frontline therapy, but this led to only a small improvement in overall patient survival. As more than half of patients with mesothelioma have alterations in the gene encoding for BAP1 this could be a potential marker for targeted therapies. In this study, we investigated the synergistic potential of combining EZH2 inhibition together with FGFR inhibition for treatment of BAP1-deficient malignancies. The efficacy of the combination was evaluated using human and murine preclinical models of mesothelioma and uveal melanoma in vitro. The efficacy of the combination was further validated in vivo by using BAP1-deficient mesothelioma xenografts and autochthonous mouse models. In vitro data showed sensitivity to the combined inhibition in BAP1-deficient mesothelioma and uveal melanoma tumor cell lines but not for BAP1-proficient subtypes. In vivo data showed susceptibility to the combination of BAP1-deficient xenografts and demonstrated an increase of survival in autochthonous models of mesothelioma. These results highlight the potential of this novel drug combination for the treatment of mesothelioma using BAP1 as a biomarker. Given these encouraging preclinical results, it will be important to clinically explore dual EZH2/FGFR inhibition in patients with BAP1-deficient malignant mesothelioma and justify further exploration in other BAP1 loss-associated tumors. SIGNIFICANCE: Despite the recent approval of immunotherapy, malignant mesothelioma has limited treatment options and poor prognosis. Here, we observe that EZH2 inhibitors dramatically enhance the efficacy of FGFR inhibition, sensitising BAP1-mutant mesothelioma and uveal melanoma cells. The striking synergy of EZH2 and FGFR inhibition supports clinical investigations for BAP1-mutant tumors.
Sujet(s)
Tumeurs du poumon , Mélanome , Mésothéliome malin , Mésothéliome , Humains , Animaux , Souris , Tumeurs du poumon/traitement médicamenteux , Mésothéliome/traitement médicamenteux , Mélanome/traitement médicamenteux , Protéine-2 homologue de l'activateur de Zeste/génétique , Protéines suppresseurs de tumeurs/génétique , Ubiquitin thiolesterase/génétiqueRÉSUMÉ
Analyses of inequalities related to prevention and cancer therapeutics/care show disparities between countries with different economic standing, and within countries with high Gross Domestic Product. The development of basic technological and biological research provides clinical and prevention opportunities that make their implementation into healthcare systems more complex, mainly due to the growth of Personalized/Precision Cancer Medicine (PCM). Initiatives like the USA-Cancer Moonshot and the EU-Mission on Cancer and Europe's Beating Cancer Plan are initiated to boost cancer prevention and therapeutics/care innovation and to mitigate present inequalities. The conference organized by the Pontifical Academy of Sciences in collaboration with the European Academy of Cancer Sciences discussed the inequality problem, dependent on the economic status of a country, the increasing demands for infrastructure supportive of innovative research and its implementation in healthcare and prevention programs. Establishing translational research defined as a coherent cancer research continuum is still a challenge. Research has to cover the entire continuum from basic to outcomes research for clinical and prevention modalities. Comprehensive Cancer Centres (CCCs) are of critical importance for integrating research innovations to preclinical and clinical research, as for ensuring state-of-the-art patient care within healthcare systems. International collaborative networks between CCCs are necessary to reach the critical mass of infrastructures and patients for PCM research, and for introducing prevention modalities and new treatments effectively. Outcomes and health economics research are required to assess the cost-effectiveness of new interventions, currently a missing element in the research portfolio. Data sharing and critical mass are essential for innovative research to develop PCM. Despite advances in cancer research, cancer incidence and prevalence is growing. Making cancer research infrastructures accessible for all patients, considering the increasing inequalities, requires science policy actions incentivizing research aimed at prevention and cancer therapeutics/care with an increased focus on patients' needs and cost-effective healthcare.
Sujet(s)
Tumeurs , Humains , Cité du Vatican , Tumeurs/prévention et contrôle , , Prestations des soins de santé , Médecine de précisionRÉSUMÉ
European cancer research stakeholders met in October 2022 in Heidelberg, Germany, at the 5th Gago conference on European Cancer Policy, to discuss the current cancer research and cancer care policy landscape in Europe. Meeting participants highlighted gaps in the existing European programmes focusing on cancer research, including Europe's Beating Cancer Plan (EBCP), the Mission on Cancer (MoC), Understanding Cancer (UNCAN.eu), and the joint action CRANE, and put forward the next priorities, in the form of the Heidelberg Manifesto for cancer research. This meeting report presents all discussions that shed light on how infrastructures can be effectively shaped for translational, prevention, clinical and outcomes cancer research, with a focus on implementation and sustainability and while engaging patients and the public. In addition, we summarize recommendations on how to introduce frameworks for the digitalization of European cancer research. Finally, we discuss what structures, commitment, and resources are needed to establish a collaborative cancer research environment in Europe to achieve the scale required for innovation.
Sujet(s)
Tumeurs , Humains , Tumeurs/thérapie , Europe , Allemagne , Politique (principe)RÉSUMÉ
Chromatin is highly dynamic, undergoing continuous global changes in its structure and type of histone and DNA modifications governed by processes such as transcription, repair, replication, and recombination. Members of the chromodomain helicase DNA-binding (CHD) family of enzymes are ATP-dependent chromatin remodelers that are intimately involved in the regulation of chromatin dynamics, altering nucleosomal structure and DNA accessibility. Genetic studies in yeast, fruit flies, zebrafish, and mice underscore essential roles of CHD enzymes in regulating cellular fate and identity, as well as proper embryonic development. With the advent of next-generation sequencing, evidence is emerging that these enzymes are subjected to frequent DNA copy number alterations or mutations and show aberrant expression in malignancies and other human diseases. As such, they might prove to be valuable biomarkers or targets for therapeutic intervention.
Sujet(s)
Chromatine , Protéines de liaison à l'ADN , Animaux , Assemblage et désassemblage de la chromatine/génétique , Helicase/génétique , Helicase/métabolisme , Protéines de liaison à l'ADN/métabolismeRÉSUMÉ
Key stakeholders from the cancer research continuum met in May 2021 at the European Cancer Research Summit in Porto to discuss priorities and specific action points required for the successful implementation of the European Cancer Mission and Europe's Beating Cancer Plan (EBCP). Speakers presented a unified view about the need to establish high-quality, networked infrastructures to decrease cancer incidence, increase the cure rate, improve patient's survival and quality of life, and deal with research and care inequalities across the European Union (EU). These infrastructures, featuring Comprehensive Cancer Centres (CCCs) as key components, will integrate care, prevention and research across the entire cancer continuum to support the development of personalized/precision cancer medicine in Europe. The three pillars of the recommended European infrastructures - namely translational research, clinical/prevention trials and outcomes research - were pondered at length. Speakers addressing the future needs of translational research focused on the prospects of multiomics assisted preclinical research, progress in Molecular and Digital Pathology, immunotherapy, liquid biopsy and science data. The clinical/prevention trial session presented the requirements for next-generation, multicentric trials entailing unified strategies for patient stratification, imaging, and biospecimen acquisition and storage. The third session highlighted the need for establishing outcomes research infrastructures to cover primary prevention, early detection, clinical effectiveness of innovations, health-related quality-of-life assessment, survivorship research and health economics. An important outcome of the Summit was the presentation of the Porto Declaration, which called for a collective and committed action throughout Europe to develop the cancer research infrastructures indispensable for fostering innovation and decreasing inequalities within and between member states. Moreover, the Summit guidelines will assist decision making in the context of a unique EU-wide cancer initiative that, if expertly implemented, will decrease the cancer death toll and improve the quality of life of those confronted with cancer, and this is carried out at an affordable cost.
Sujet(s)
Tumeurs , Qualité de vie , Europe/épidémiologie , Humains , Tumeurs/épidémiologie , Tumeurs/prévention et contrôle , Médecine de précision ,RÉSUMÉ
Recently, a petition was offered to the European Commission calling for an immediate ban on animal testing. Although a Europe-wide moratorium on the use of animals in science is not yet possible, there has been a push by the non-scientific community and politicians for a rapid transition to animal-free innovations. Although there are benefits for both animal welfare and researchers, advances on alternative methods have not progressed enough to be able to replace animal research in the foreseeable future. This trend has led first and foremost to a substantial increase in the administrative burden and hurdles required to make timely advances in research and treatments for human and animal diseases. The current COVID-19 pandemic clearly highlights how much we actually rely on animal research. COVID-19 affects several organs and systems, and the various animal-free alternatives currently available do not come close to this complexity. In this Essay, we therefore argue that the use of animals is essential for the advancement of human and veterinary health.
Sujet(s)
Expérimentation animale , Recherche biomédicale , Infections à coronavirus , Modèles animaux de maladie humaine , Pandémies , Pneumopathie virale , Animaux , Betacoronavirus , COVID-19 , Humains , SARS-CoV-2RÉSUMÉ
As one of the most common forms of cancer, lung cancers present as a collection of different histological subtypes. These subtypes are characterized by distinct sets of driver mutations and phenotypic appearance, and they often show varying degrees of heterogenicity, aggressiveness, and response/resistance to therapy. Intriguingly, lung cancers are also capable of showing features of multiple subtypes or converting from one subtype to another. The intertumoral and intratumoral heterogeneity of lung cancers as well as incidences of subtype transdifferentiation raise the question of to what extent the tumor characteristics are dictated by the cell of origin rather than the acquired driver lesions. We provide here an overview of the studies in experimental mouse models that try to address this question. These studies convincingly show that both the cell of origin and the genetic driver lesions play a critical role in shaping the phenotypes of lung tumors. However, they also illustrate that there is far from a direct one-to-one relationship between the cell of origin and the cancer subtype, as most epithelial cells can be reprogrammed toward diverse lung cancer fates when exposed to the appropriate set of driver mutations.
Sujet(s)
Tumeurs du poumon/étiologie , Adénocarcinome/étiologie , Animaux , Carcinome épidermoïde/étiologie , Modèles animaux de maladie humaine , Cellules épithéliales , Tumeurs du poumon/génétique , Souris , Muqueuse respiratoire/cytologie , Carcinome pulmonaire à petites cellules/étiologieRÉSUMÉ
A comprehensive translational cancer research approach focused on personalized and precision medicine, and covering the entire cancer research-care-prevention continuum has the potential to achieve in 2030 a 10-year cancer-specific survival for 75% of patients diagnosed in European Union (EU) member states with a well-developed healthcare system. Concerted actions across this continuum that spans from basic and preclinical research through clinical and prevention research to outcomes research, along with the establishment of interconnected high-quality infrastructures for translational research, clinical and prevention trials and outcomes research, will ensure that science-driven and social innovations benefit patients and individuals at risk across the EU. European infrastructures involving comprehensive cancer centres (CCCs) and CCC-like entities will provide researchers with access to the required critical mass of patients, biological materials and technological resources and can bridge research with healthcare systems. Here, we prioritize research areas to ensure a balanced research portfolio and provide recommendations for achieving key targets. Meeting these targets will require harmonization of EU and national priorities and policies, improved research coordination at the national, regional and EU level and increasingly efficient and flexible funding mechanisms. Long-term support by the EU and commitment of Member States to specialized schemes are also needed for the establishment and sustainability of trans-border infrastructures and networks. In addition to effectively engaging policymakers, all relevant stakeholders within the entire continuum should consensually inform policy through evidence-based advice.
Sujet(s)
Tumeurs/thérapie , Survivants du cancer , Essais cliniques comme sujet , Europe , Humains , Tumeurs/prévention et contrôle , Tumeurs/psychologie , Tumeurs/rééducation et réadaptation , Innovation organisationnelle , Soins palliatifs , Participation des patients , Spécialisation ,RÉSUMÉ
Chromodomain helicase DNA-binding (CHD) chromatin remodelers regulate transcription and DNA repair. They govern cell-fate decisions during embryonic development and are often deregulated in human pathologies. Chd1-8 show upon germline disruption pronounced, often developmental lethal phenotypes. Here we show that contrary to Chd1-8 disruption, Chd9-/-animals are viable, fertile and display no developmental defects or disease predisposition. Germline deletion of Chd9 only moderately affects gene expression in tissues and derived cells, whereas acute depletion in human cancer cells elicits more robust changes suggesting that CHD9 is a highly context-dependent chromatin regulator that, surprisingly, is dispensable for mouse development.
Sujet(s)
Helicase/génétique , Transactivateurs/génétique , Animaux , Lignée cellulaire , Cellules cultivées , Chromatine/métabolisme , Assemblage et désassemblage de la chromatine , Développement embryonnaire , Régulation de l'expression des gènes au cours du développement , Techniques de knock-out de gènes , Mutation germinale , Humains , Cellules K562 , Souris , Cellules souches embryonnaires de souris/cytologieRÉSUMÉ
We have generated mouse models of malignant mesothelioma (MM) based upon disruption of the Bap1, Nf2, and Cdkn2ab tumor suppressor loci in various combinations as also frequently observed in human MM. Inactivation of all three loci in the mesothelial lining of the thoracic cavity leads to a highly aggressive MM that recapitulates the histological features and gene expression profile observed in human patients. The tumors also show a similar inflammatory phenotype. Bap1 deletion alone does not cause MM but dramatically accelerates MM development when combined with Nf2 and Cdkn2ab (hereafter BNC) disruption. The accelerated tumor development is accompanied by increased Polycomb repression and EZH2-mediated redistribution of H3K27me3 toward promoter sites with concomitant activation of PI3K and MAPK pathways. Treatment of BNC tumor-bearing mice with cisplatin and pemetrexed, the current frontline treatment, prolongs survival. This makes the autochthonous mouse model described here very well suited to explore the pathogenesis of MM and validate new treatment regimens for MM, including immunotherapy.
Sujet(s)
Inhibiteur p15 de kinase cycline-dépendante/métabolisme , Inhibiteur p16 de kinase cycline-dépendante/métabolisme , Délétion de gène , Mésothéliome malin/métabolisme , Neurofibromine-2/métabolisme , Protéines suppresseurs de tumeurs/métabolisme , Ubiquitin thiolesterase/métabolisme , Animaux , Modèles animaux de maladie humaine , Évolution de la maladie , Humains , Immunophénotypage , Système de signalisation des MAP kinases/effets des médicaments et des substances chimiques , Mésothéliome malin/génétique , Mésothéliome malin/anatomopathologie , Souris , Phosphatidylinositol 3-kinases/métabolisme , Inhibiteurs de poly(ADP-ribose) polymérases/pharmacologie , Inhibiteurs de protéines kinases/pharmacologie , Transcription génétique/effets des médicaments et des substances chimiques , Microenvironnement tumoral/effets des médicaments et des substances chimiquesRÉSUMÉ
Rodent models of malignant mesothelioma help facilitate the understanding of the biology of this highly lethal cancer and to develop and test new interventions. Introducing the same genetic lesions as found in human mesothelioma in mice results in tumors that show close resemblance with the human disease counterpart. This includes the extensive inflammatory responses that characterize human malignant mesothelioma. The relatively fast development of mesothelioma in mice when the appropriate combination of lesions is introduced, with or without exposure to asbestos, make the autochthonous models particularly useful for testing new treatment strategies in an immunocompetent setting, whereas Patient-Derived Xenograft models are particularly useful to assess effects of inter- and intra-tumor heterogeneity and human-specific features of mesothelioma. It is to be expected that new insights obtained by studying these experimental systems will lead to new more effective treatments for this devastating disease.
RÉSUMÉ
Fibroblast growth factor receptor 1 (FGFR1) is frequently amplified in human small-cell lung cancer (SCLC), but its contribution to SCLC and other lung tumors has remained elusive. Here, we assess the tumorigenic capacity of constitutive-active FGFR1 (FGFR1K656E) with concomitant RB and P53 depletion in mouse lung. Our results reveal a context-dependent effect of FGFR1K656E: it impairs SCLC development from CGRPPOS neuroendocrine (NE) cells, which are considered the major cell of origin of SCLC, whereas it promotes SCLC and low-grade NE bronchial lesions from tracheobronchial-basal cells. Moreover, FGFR1K656E induces lung adenocarcinoma (LADC) from most lung cell compartments. However, its expression is not sustained in LADC originating from CGRPPOS cells. Therefore, cell context and tumor stage should be taken into account when considering FGFR1 inhibition as a therapeutic option.
Sujet(s)
Tumeurs du poumon/métabolisme , Tumeurs du poumon/anatomopathologie , Oncogènes , Récepteur FGFR1/génétique , Protéine du rétinoblastome/métabolisme , Carcinome pulmonaire à petites cellules/métabolisme , Carcinome pulmonaire à petites cellules/anatomopathologie , Protéine p53 suppresseur de tumeur/métabolisme , Adénocarcinome pulmonaire/génétique , Adénocarcinome pulmonaire/métabolisme , Adénocarcinome pulmonaire/anatomopathologie , Animaux , Bronches/anatomopathologie , Transformation cellulaire néoplasique/effets des médicaments et des substances chimiques , Transformation cellulaire néoplasique/anatomopathologie , Cisplatine/pharmacologie , Résistance aux médicaments antinéoplasiques/effets des médicaments et des substances chimiques , Régulation de l'expression des gènes tumoraux , Humains , Integrases/métabolisme , Kératines/métabolisme , Tumeurs du poumon/génétique , Souris , Mutation/génétique , Fosse nasale/anatomopathologie , Système neuroendocrinien/anatomopathologie , Alvéoles pulmonaires/effets des médicaments et des substances chimiques , Alvéoles pulmonaires/anatomopathologie , Récepteur FGFR1/métabolisme , Carcinome pulmonaire à petites cellules/génétiqueRÉSUMÉ
The outcomes of patients with SCLC have not yet been substantially impacted by the revolution in precision oncology, primarily owing to a paucity of genetic alterations in actionable driver oncogenes. Nevertheless, systemic therapies that include immunotherapy are beginning to show promise in the clinic. Although, these results are encouraging, many patients do not respond to, or rapidly recur after, current regimens, necessitating alternative or complementary therapeutic strategies. In this review, we discuss ongoing investigations into the pathobiology of this recalcitrant cancer and the therapeutic vulnerabilities that are exposed by the disease state. Included within this discussion, is a snapshot of the current biomarker and clinical trial landscapes for SCLC. Finally, we identify key knowledge gaps that should be addressed to advance the field in pursuit of reduced SCLC mortality. This review largely summarizes work presented at the Third Biennial International Association for the Study of Lung Cancer SCLC Meeting.
Sujet(s)
Tumeurs du poumon , Carcinome pulmonaire à petites cellules , Humains , Laboratoires , Tumeurs du poumon/thérapie , Récidive tumorale locale , Médecine de précision , Carcinome pulmonaire à petites cellules/thérapieRÉSUMÉ
Small-cell lung cancer is the most aggressive type of lung cancer, characterized by a remarkable response to chemotherapy followed by development of resistance. Here, we describe SCLC subtypes in Mycl- and Nfib-driven GEMM that include CDH1-high peripheral primary tumor lesions and CDH1-negative, aggressive intrapulmonary metastases. Cisplatin treatment preferentially eliminates the latter, thus revealing a striking differential response. Using a combined transcriptomic and proteomic approach, we find a marked reduction in proliferation and metabolic rewiring following cisplatin treatment and present evidence for a distinctive metabolic and structural profile defining intrinsically resistant populations. This offers perspectives for effective combination therapies that might also hold promise for treating human SCLC, given the very similar response of both mouse and human SCLC to cisplatin.
Sujet(s)
Carcinome à petites cellules/génétique , Résistance aux médicaments antinéoplasiques , Hétérogénéité génétique , Tumeurs du poumon/génétique , Animaux , Antinéoplasiques/usage thérapeutique , Carcinome à petites cellules/traitement médicamenteux , Lignée cellulaire tumorale , Cisplatine/usage thérapeutique , Femelle , Humains , Tumeurs du poumon/traitement médicamenteux , Mâle , Souris , Protéome/génétique , Protéome/métabolisme , TranscriptomeRÉSUMÉ
Small cell lung cancer (SCLC) is generally regarded as very difficult to treat, mostly due to the development of metastases early in the disease and a quick relapse with resistant disease. SCLC patients initially show a good response to treatment with the DNA damaging agents cisplatin and etoposide. This is, however, quickly followed by the development of resistant disease, which urges the development of novel therapies for this type of cancer. In this study, we set out to compile a comprehensive overview of the vulnerabilities of SCLC. A functional genome-wide screen where all individual genes were knocked out was performed to identify novel vulnerabilities of SCLC. By analysis of the knockouts that were lethal to these cancer cells, we identified several processes to be synthetic vulnerabilities in SCLC. We were able to validate the vulnerability to inhibition of the replication stress response machinery by use of Chk1 and ATR inhibitors. Strikingly, SCLC cells were more sensitive to these inhibitors than nontransformed cells. In addition, these inhibitors work synergistically with either etoposide and cisplatin, where the interaction is largest with the latter. ATR inhibition by VE-822 treatment in combination with cisplatin also outperforms the combination of cisplatin with etoposide in vivo Altogether, our study uncovered a critical dependence of SCLC on the replication stress response and urges the validation of ATR inhibitors in combination with cisplatin in a clinical setting.