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Brosseau S, Abreu P, Bouchez C, Charon L, Kieffer Y, Gentric G, Picant V, Veith I, Camonis J, Descroix S, Mechta-Grigoriou F, Parrini MC, Zalcman G. YAP/TEAD involvement in resistance to paclitaxel chemotherapy in lung cancer. Mol Cell Biochem 2024:10.1007/s11010-024-04949-7. [PMID: 38427166 DOI: 10.1007/s11010-024-04949-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Accepted: 01/23/2024] [Indexed: 03/02/2024]
Abstract
The Yes-associated protein (YAP) oncoprotein has been linked to both metastases and resistance to targeted therapy of lung cancer cells. We aimed to investigate the effect of YAP pharmacological inhibition, using YAP/TEA domain (TEAD) transcription factor interaction inhibitors in chemo-resistant lung cancer cells. YAP subcellular localization, as a readout for YAP activation, cell migration, and TEAD transcription factor functional transcriptional activity were investigated in cancer cell lines with up-regulated YAP, with and without YAP/TEAD interaction inhibitors. Parental (A549) and paclitaxel-resistant (A549R) cell transcriptomes were analyzed. The half-maximal inhibitory concentration (IC50) of paclitaxel or trametinib, which are Mitogen-Activated protein kinase and Erk Kinase (MEK) inhibitors, combined with a YAP/TEAD inhibitor (IV#6), was determined. A three-dimensional (3D) microfluidic culture device enabled us to study the effect of IV#6/paclitaxel combination on cancer cells isolated from fresh resected lung cancer samples. YAP activity was significantly higher in paclitaxel-resistant cell lines. The YAP/TEAD inhibitor induced a decreased YAP activity in A549, PC9, and H2052 cells, with reduced YAP nuclear staining. Wound healing assays upon YAP inhibition revealed impaired cell motility of lung cancer A549 and mesothelioma H2052 cells. Combining YAP pharmacological inhibition with trametinib in K-Ras mutated A549 cells recapitulated synthetic lethality, thereby sensitizing these cells to MEK inhibition. The YAP/TEAD inhibitor lowered the IC50 of paclitaxel in A549R cells. Differential transcriptomic analysis of parental and A549R cells revealed an increased YAP/TEAD transcriptomic signature in resistant cells, downregulated upon YAP inhibition. The YAP/TEAD inhibitor restored paclitaxel sensitivity of A549R cells cultured in a 3D microfluidic system, with lung cancer cells from a fresh tumor efficiently killed by YAP/TEAD inhibitor/paclitaxel doublet. Evidence of the YAP/TEAD transcriptional program's role in chemotherapy resistance paves the way for YAP therapeutic targeting.
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Affiliation(s)
- S Brosseau
- U830 INSERM "Cancer, Heterogenity, Instability, Plasticity", Team "Stress and Cancer", Institut Curie Research Centre, 26 rue d'Ulm, 75248 Cedex 05, Paris, France
- Medicine Faculty, Université Paris Cité, 26 rue Henri Henri Huchard, 75018, Paris, France
- Thoracic Oncology Department, Clinical Investigation Centre (CIC) 1425 INSERM, Hôpital Bichat-Claude Bernard, Assistance Publique-Hôpitaux de Paris (AP-HP), 46 rue Henri Huchard, 75018, Paris, France
| | - P Abreu
- U830 INSERM "Cancer, Heterogenity, Instability, Plasticity", Team "Stress and Cancer", Institut Curie Research Centre, 26 rue d'Ulm, 75248 Cedex 05, Paris, France
| | - C Bouchez
- U830 INSERM "Cancer, Heterogenity, Instability, Plasticity", Team "Stress and Cancer", Institut Curie Research Centre, 26 rue d'Ulm, 75248 Cedex 05, Paris, France
| | - L Charon
- U830 INSERM "Cancer, Heterogenity, Instability, Plasticity", Team "Stress and Cancer", Institut Curie Research Centre, 26 rue d'Ulm, 75248 Cedex 05, Paris, France
| | - Y Kieffer
- U830 INSERM "Cancer, Heterogenity, Instability, Plasticity", Team "Stress and Cancer", Institut Curie Research Centre, 26 rue d'Ulm, 75248 Cedex 05, Paris, France
- PSL Research University, Paris, France
| | - G Gentric
- U830 INSERM "Cancer, Heterogenity, Instability, Plasticity", Team "Stress and Cancer", Institut Curie Research Centre, 26 rue d'Ulm, 75248 Cedex 05, Paris, France
- PSL Research University, Paris, France
| | - V Picant
- U830 INSERM "Cancer, Heterogenity, Instability, Plasticity", Team "Stress and Cancer", Institut Curie Research Centre, 26 rue d'Ulm, 75248 Cedex 05, Paris, France
- PSL Research University, Paris, France
| | - I Veith
- U830 INSERM "Cancer, Heterogenity, Instability, Plasticity", Team "Stress and Cancer", Institut Curie Research Centre, 26 rue d'Ulm, 75248 Cedex 05, Paris, France
- PSL Research University, Paris, France
| | - J Camonis
- U830 INSERM "Cancer, Heterogenity, Instability, Plasticity", Team "Stress and Cancer", Institut Curie Research Centre, 26 rue d'Ulm, 75248 Cedex 05, Paris, France
- PSL Research University, Paris, France
| | - S Descroix
- PSL Research University, Paris, France
- UMR 168 CNRS "Physics and Chemistry Curie" Institut Curie Research Centre, 26 rue d'Ulm, 75248 Cedex 05, Paris, France
| | - F Mechta-Grigoriou
- U830 INSERM "Cancer, Heterogenity, Instability, Plasticity", Team "Stress and Cancer", Institut Curie Research Centre, 26 rue d'Ulm, 75248 Cedex 05, Paris, France
- PSL Research University, Paris, France
| | - M C Parrini
- U830 INSERM "Cancer, Heterogenity, Instability, Plasticity", Team "Stress and Cancer", Institut Curie Research Centre, 26 rue d'Ulm, 75248 Cedex 05, Paris, France
- PSL Research University, Paris, France
| | - G Zalcman
- U830 INSERM "Cancer, Heterogenity, Instability, Plasticity", Team "Stress and Cancer", Institut Curie Research Centre, 26 rue d'Ulm, 75248 Cedex 05, Paris, France.
- Medicine Faculty, Université Paris Cité, 26 rue Henri Henri Huchard, 75018, Paris, France.
- Thoracic Oncology Department, Clinical Investigation Centre (CIC) 1425 INSERM, Hôpital Bichat-Claude Bernard, Assistance Publique-Hôpitaux de Paris (AP-HP), 46 rue Henri Huchard, 75018, Paris, France.
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2
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Mencattini A, D'Orazio M, Casti P, Comes MC, Di Giuseppe D, Antonelli G, Filippi J, Corsi F, Ghibelli L, Veith I, Di Natale C, Parrini MC, Martinelli E. Deep-Manager: a versatile tool for optimal feature selection in live-cell imaging analysis. Commun Biol 2023; 6:241. [PMID: 36869080 PMCID: PMC9984362 DOI: 10.1038/s42003-023-04585-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 02/13/2023] [Indexed: 03/05/2023] Open
Abstract
One of the major problems in bioimaging, often highly underestimated, is whether features extracted for a discrimination or regression task will remain valid for a broader set of similar experiments or in the presence of unpredictable perturbations during the image acquisition process. Such an issue is even more important when it is addressed in the context of deep learning features due to the lack of a priori known relationship between the black-box descriptors (deep features) and the phenotypic properties of the biological entities under study. In this regard, the widespread use of descriptors, such as those coming from pre-trained Convolutional Neural Networks (CNNs), is hindered by the fact that they are devoid of apparent physical meaning and strongly subjected to unspecific biases, i.e., features that do not depend on the cell phenotypes, but rather on acquisition artifacts, such as brightness or texture changes, focus shifts, autofluorescence or photobleaching. The proposed Deep-Manager software platform offers the possibility to efficiently select those features having lower sensitivity to unspecific disturbances and, at the same time, a high discriminating power. Deep-Manager can be used in the context of both handcrafted and deep features. The unprecedented performances of the method are proven using five different case studies, ranging from selecting handcrafted green fluorescence protein intensity features in chemotherapy-related breast cancer cell death investigation to addressing problems related to the context of Deep Transfer Learning. Deep-Manager, freely available at https://github.com/BEEuniroma2/Deep-Manager , is suitable for use in many fields of bioimaging and is conceived to be constantly upgraded with novel image acquisition perturbations and modalities.
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Affiliation(s)
- A Mencattini
- Department of Electronic Engineering, University of Rome Tor Vergata, 00133, Rome, Italy
- Interdisciplinary Center for Advanced Studies on Lab-on-Chip and Organ-on-Chip Applications (IC-LOC), University of Rome Tor Vergata, 00133, Rome, Italy
| | - M D'Orazio
- Department of Electronic Engineering, University of Rome Tor Vergata, 00133, Rome, Italy
- Interdisciplinary Center for Advanced Studies on Lab-on-Chip and Organ-on-Chip Applications (IC-LOC), University of Rome Tor Vergata, 00133, Rome, Italy
| | - P Casti
- Department of Electronic Engineering, University of Rome Tor Vergata, 00133, Rome, Italy
- Interdisciplinary Center for Advanced Studies on Lab-on-Chip and Organ-on-Chip Applications (IC-LOC), University of Rome Tor Vergata, 00133, Rome, Italy
| | - M C Comes
- Department of Electronic Engineering, University of Rome Tor Vergata, 00133, Rome, Italy
- Interdisciplinary Center for Advanced Studies on Lab-on-Chip and Organ-on-Chip Applications (IC-LOC), University of Rome Tor Vergata, 00133, Rome, Italy
| | - D Di Giuseppe
- Department of Electronic Engineering, University of Rome Tor Vergata, 00133, Rome, Italy
- Interdisciplinary Center for Advanced Studies on Lab-on-Chip and Organ-on-Chip Applications (IC-LOC), University of Rome Tor Vergata, 00133, Rome, Italy
| | - G Antonelli
- Department of Electronic Engineering, University of Rome Tor Vergata, 00133, Rome, Italy
- Interdisciplinary Center for Advanced Studies on Lab-on-Chip and Organ-on-Chip Applications (IC-LOC), University of Rome Tor Vergata, 00133, Rome, Italy
| | - J Filippi
- Department of Electronic Engineering, University of Rome Tor Vergata, 00133, Rome, Italy
- Interdisciplinary Center for Advanced Studies on Lab-on-Chip and Organ-on-Chip Applications (IC-LOC), University of Rome Tor Vergata, 00133, Rome, Italy
| | - F Corsi
- Interdisciplinary Center for Advanced Studies on Lab-on-Chip and Organ-on-Chip Applications (IC-LOC), University of Rome Tor Vergata, 00133, Rome, Italy
- Department of Biology, University of Rome Tor Vergata, 00133, Rome, Italy
| | - L Ghibelli
- Department of Biology, University of Rome Tor Vergata, 00133, Rome, Italy
| | - I Veith
- Inserm U830, Stress and Cancer Lab, Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, 75005, Paris, France
| | - C Di Natale
- Department of Electronic Engineering, University of Rome Tor Vergata, 00133, Rome, Italy
| | - M C Parrini
- Inserm U830, Stress and Cancer Lab, Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, 75005, Paris, France
| | - E Martinelli
- Department of Electronic Engineering, University of Rome Tor Vergata, 00133, Rome, Italy.
- Interdisciplinary Center for Advanced Studies on Lab-on-Chip and Organ-on-Chip Applications (IC-LOC), University of Rome Tor Vergata, 00133, Rome, Italy.
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3
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Mencattini A, Lansche C, Veith I, Erbs P, Balloul JM, Quemeneur E, Descroix S, Mechta-Grigoriou F, Zalcman G, Zaupa C, Parrini MC, Martinelli E. Direct imaging and automatic analysis in tumor-on-chip reveal cooperative antitumoral activity of immune cells and oncolytic vaccinia virus. Biosens Bioelectron 2022; 215:114571. [DOI: 10.1016/j.bios.2022.114571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/28/2022] [Accepted: 07/10/2022] [Indexed: 11/02/2022]
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Singh MK, Zago G, Veith I, Camonis J, Coppey M, Parrini MC. Autophagy Is Polarized toward Cell Front during Migration and Spatially Perturbed by Oncogenic Ras. Cells 2021; 10:cells10102637. [PMID: 34685617 PMCID: PMC8534269 DOI: 10.3390/cells10102637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/27/2021] [Accepted: 09/28/2021] [Indexed: 01/18/2023] Open
Abstract
Autophagy is a physiological degradation process that removes unnecessary or dysfunctional components of cells. It is important for normal cellular homeostasis and as a response to a variety of stresses, such as nutrient deprivation. Defects in autophagy have been linked to numerous human diseases, including cancers. Cancer cells require autophagy to migrate and to invade. Here, we study the intracellular topology of this interplay between autophagy and cell migration by an interdisciplinary live imaging approach which combines micro-patterning techniques and an autophagy reporter (RFP-GFP-LC3) to monitor over time, during directed migration, the back–front spatial distribution of LC3-positive compartments (autophagosomes and autolysosomes). Moreover, by exploiting a genetically controlled cell model, we assessed the impact of transformation by the Ras oncogene, one of the most frequently mutated genes in human cancers, which is known to increase both cell motility and basal autophagy. Static cells displayed an isotropic distribution of autophagy LC3-positive compartments. Directed migration globally increased autophagy and polarized both autophagosomes and autolysosomes at the front of the nucleus of migrating cells. In Ras-transformed cells, the front polarization of LC3 compartments was much less organized, spatially and temporally, as compared to normal cells. This might be a consequence of altered lysosome positioning. In conclusion, this work reveals that autophagy organelles are polarized toward the cell front during migration and that their spatial-temporal dynamics are altered in motile cancer cells that express an oncogenic Ras protein.
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Affiliation(s)
- Manish Kumar Singh
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, 75005 Paris, France; (M.K.S.); (G.Z.); (I.V.); (J.C.); (M.C.)
- Institut National de la Santé et de la Recherche Médicale (INSERM), U830, 75005 Paris, France
| | - Giulia Zago
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, 75005 Paris, France; (M.K.S.); (G.Z.); (I.V.); (J.C.); (M.C.)
- Institut National de la Santé et de la Recherche Médicale (INSERM), U830, 75005 Paris, France
| | - Irina Veith
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, 75005 Paris, France; (M.K.S.); (G.Z.); (I.V.); (J.C.); (M.C.)
- Institut National de la Santé et de la Recherche Médicale (INSERM), U830, 75005 Paris, France
| | - Jacques Camonis
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, 75005 Paris, France; (M.K.S.); (G.Z.); (I.V.); (J.C.); (M.C.)
- Institut National de la Santé et de la Recherche Médicale (INSERM), U830, 75005 Paris, France
| | - Mathieu Coppey
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, 75005 Paris, France; (M.K.S.); (G.Z.); (I.V.); (J.C.); (M.C.)
- Centre National de la Recherche Scientifique (CNRS), UMR168, Sorbonne University, 75005 Paris, France
| | - Maria Carla Parrini
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, 75005 Paris, France; (M.K.S.); (G.Z.); (I.V.); (J.C.); (M.C.)
- Institut National de la Santé et de la Recherche Médicale (INSERM), U830, 75005 Paris, France
- Correspondence: ; Tel.: +33-(0)-156-246-643
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5
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Veith I, Mencattini A, Picant V, Serra M, Leclerc M, Comes MC, Mami-Chouaib F, Camonis J, Descroix S, Shirvani H, Mechta-Grigoriou F, Zalcman G, Parrini MC, Martinelli E. Apoptosis mapping in space and time of 3D tumor ecosystems reveals transmissibility of cytotoxic cancer death. PLoS Comput Biol 2021; 17:e1008870. [PMID: 33784299 PMCID: PMC8034728 DOI: 10.1371/journal.pcbi.1008870] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 04/09/2021] [Accepted: 03/12/2021] [Indexed: 01/26/2023] Open
Abstract
The emerging tumor-on-chip (ToC) approaches allow to address biomedical questions out of reach with classical cell culture techniques: in biomimetic 3D hydrogels they partially reconstitute ex vivo the complexity of the tumor microenvironment and the cellular dynamics involving multiple cell types (cancer cells, immune cells, fibroblasts, etc.). However, a clear bottleneck is the extraction and interpretation of the rich biological information contained, sometime hidden, in the cell co-culture videos. In this work, we develop and apply novel video analysis algorithms to automatically measure the cytotoxic effects on human cancer cells (lung and breast) induced either by doxorubicin chemotherapy drug or by autologous tumor-infiltrating cytotoxic T lymphocytes (CTL). A live fluorescent dye (red) is used to selectively pre-stain the cancer cells before co-cultures and a live fluorescent reporter for caspase activity (green) is used to monitor apoptotic cell death. The here described open-source computational method, named STAMP (spatiotemporal apoptosis mapper), extracts the temporal kinetics and the spatial maps of cancer death, by localizing and tracking cancer cells in the red channel, and by counting the red to green transition signals, over 2-3 days. The robustness and versatility of the method is demonstrated by its application to different cell models and co-culture combinations. Noteworthy, this approach reveals the strong contribution of primary cancer-associated fibroblasts (CAFs) to breast cancer chemo-resistance, proving to be a powerful strategy to investigate intercellular cross-talks and drug resistance mechanisms. Moreover, we defined a new parameter, the 'potential of death induction', which is computed in time and in space to quantify the impact of dying cells on neighbor cells. We found that, contrary to natural death, cancer death induced by chemotherapy or by CTL is transmissible, in that it promotes the death of nearby cancer cells, suggesting the release of diffusible factors which amplify the initial cytotoxic stimulus.
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Affiliation(s)
- Irina Veith
- Institut Roche, 4 cours de l’Ile Seguin, Boulogne-Billancourt, France
- Institut Curie, INSERM U830, Stress and Cancer Laboratory, PSL Research University, Paris, France
| | - Arianna Mencattini
- Department of Electronic Engineering, University of Rome Tor Vergata, Rome, Italy
| | - Valentin Picant
- Institut Curie, INSERM U830, Stress and Cancer Laboratory, PSL Research University, Paris, France
| | - Marco Serra
- Institut Curie, CNRS UMR168, Laboratoire Physico Chimie Curie, Institut Pierre-Gilles de Gennes, PSL Research University, Paris, France
| | - Marine Leclerc
- INSERM UMR 1186, Integrative Tumor Immunology and Immunotherapy, Gustave Roussy, Fac. de Médecine—Univ. Paris-Sud, Université Paris-Saclay, Villejuif, France
| | - Maria Colomba Comes
- Department of Electronic Engineering, University of Rome Tor Vergata, Rome, Italy
| | - Fathia Mami-Chouaib
- INSERM UMR 1186, Integrative Tumor Immunology and Immunotherapy, Gustave Roussy, Fac. de Médecine—Univ. Paris-Sud, Université Paris-Saclay, Villejuif, France
| | - Jacques Camonis
- Institut Curie, INSERM U830, Stress and Cancer Laboratory, PSL Research University, Paris, France
| | - Stéphanie Descroix
- Institut Curie, CNRS UMR168, Laboratoire Physico Chimie Curie, Institut Pierre-Gilles de Gennes, PSL Research University, Paris, France
| | - Hamasseh Shirvani
- Institut Roche, 4 cours de l’Ile Seguin, Boulogne-Billancourt, France
| | - Fatima Mechta-Grigoriou
- Institut Curie, INSERM U830, Stress and Cancer Laboratory, PSL Research University, Paris, France
| | - Gérard Zalcman
- Institut Curie, INSERM U830, Stress and Cancer Laboratory, PSL Research University, Paris, France
- CIC INSERM 1425, Thoracic Oncology Department, University Hospital Bichat-Claude Bernard, Université de Paris, Paris, France
| | - Maria Carla Parrini
- Institut Curie, INSERM U830, Stress and Cancer Laboratory, PSL Research University, Paris, France
- * E-mail: (EM); (MCP)
| | - Eugenio Martinelli
- Department of Electronic Engineering, University of Rome Tor Vergata, Rome, Italy
- * E-mail: (EM); (MCP)
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Zago G, Veith I, Singh MK, Fuhrmann L, De Beco S, Remorino A, Takaoka S, Palmeri M, Berger F, Brandon N, El Marjou A, Vincent-Salomon A, Camonis J, Coppey M, Parrini MC. RalB directly triggers invasion downstream Ras by mobilizing the Wave complex. eLife 2018; 7:40474. [PMID: 30320548 PMCID: PMC6226288 DOI: 10.7554/elife.40474] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 10/14/2018] [Indexed: 12/27/2022] Open
Abstract
The two Ral GTPases, RalA and RalB, have crucial roles downstream Ras oncoproteins in human cancers; in particular, RalB is involved in invasion and metastasis. However, therapies targeting Ral signalling are not available yet. By a novel optogenetic approach, we found that light-controlled activation of Ral at plasma-membrane promotes the recruitment of the Wave Regulatory Complex (WRC) via its effector exocyst, with consequent induction of protrusions and invasion. We show that active Ras signals to RalB via two RalGEFs (Guanine nucleotide Exchange Factors), RGL1 and RGL2, to foster invasiveness; RalB contribution appears to be more important than that of MAPK and PI3K pathways. Moreover, on the clinical side, we uncovered a potential role of RalB in human breast cancers by determining that RalB expression at protein level increases in a manner consistent with progression toward metastasis. This work highlights the Ras-RGL1/2-RalB-exocyst-WRC axis as appealing target for novel anticancer strategies. Cancers develop when cells in the body divide rapidly in an uncontroled manner. It is generally possible to cure cancers that remain contained within a small area. However, if the tumor cells start to move, the cancer may spread in the body and become life threatening. Currently, most of the anti-cancer treatments act to reduce the multiplication of these cells, but not their ability to migrate. A signal protein called Ras stimulates human cells to grow and move around. In healthy cells, the activity of Ras is tightly controled to ensure cells only divide and migrate at particular times, but in roughly 30% of all human cancers, Ras is abnormally active. Ras switches on another protein, named RalB, which is also involved in inappropriate cell migration. Yet, it is not clear how RalB is capable to help Ras trigger the migration of cells. Zago et al. used an approach called optogenetics to specifically activate the RalB protein in human cells using a laser that produces blue light. When activated, the light-controlled RalB started abnormal cell migration; this was used to dissect which molecules and mechanisms were involved in the process. Taken together, the experiments showed that, first, Ras ‘turns on’ RalB by changing the location of two proteins that control RalB. Then, the activated RalB regulates the exocyst, a group of proteins that travel within the cell. In turn, the exocyst recruits another group of proteins, named the Wave complex, which is part of the molecular motor required for cells to migrate. Zago et al. also found that, in patients, the RalB protein was present at abnormally high levels in samples of breast cancer cells that had migrated to another part of the body. Overall, these findings indicate that the role of RalB protein in human cancers is larger than previously thought, and they highlight a new pathway that could be a target for new anti-cancer drugs.
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Affiliation(s)
- Giulia Zago
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,ART Group, Inserm U830, Paris, France
| | - Irina Veith
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,ART Group, Inserm U830, Paris, France
| | - Manish Kumar Singh
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,ART Group, Inserm U830, Paris, France
| | - Laetitia Fuhrmann
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,Department of Pathology, Institut Curie, Paris, France
| | - Simon De Beco
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,LOCCO Group, UMR168, Paris, France
| | - Amanda Remorino
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,LOCCO Group, UMR168, Paris, France
| | - Saori Takaoka
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,ART Group, Inserm U830, Paris, France
| | - Marjorie Palmeri
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,ART Group, Inserm U830, Paris, France
| | - Frédérique Berger
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,Department of Biostatistics, Institut Curie, Paris, France
| | - Nathalie Brandon
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,ART Group, Inserm U830, Paris, France
| | - Ahmed El Marjou
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,Protein Expression and Purification Core Facility, Paris, France
| | - Anne Vincent-Salomon
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,Department of Pathology, Institut Curie, Paris, France
| | - Jacques Camonis
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,ART Group, Inserm U830, Paris, France
| | - Mathieu Coppey
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,LOCCO Group, UMR168, Paris, France
| | - Maria Carla Parrini
- Institut Curie, Centre de Recherche, Paris Sciences et Lettres Research University, Paris, France.,ART Group, Inserm U830, Paris, France
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7
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Veith I. Parallels between AIDS, leprosy and syphilis. Hawaii Med J 1992; 51:300, 302, 304. [PMID: 1308894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Veith I. The medicine doll with bound feet. Med Herit 1986; 2:63-9. [PMID: 11611907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
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9
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Veith I. On privileged communication: a comparative study of several medical cases. West J Med 1983; 138:437-40. [PMID: 6344435 PMCID: PMC1021509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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11
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Veith I. Changing concepts of health care: an historian's view. West J Med 1980; 133:532-8. [PMID: 7008361 PMCID: PMC1272426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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12
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Veith I. The history of medicine dolls and foot-binding in China. Clio Med 1980; 14:255-67. [PMID: 6161738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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13
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Veith I. Hygeia by the bay--a city of health (Benjamin Lyford). West J Med 1977; 127:442-9. [PMID: 335665 PMCID: PMC1237904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Veith I. Benjamin Rush and the beginnings of American Medicine. West J Med 1976; 125:17-27. [PMID: 782040 PMCID: PMC1237175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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15
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Veith I. Sir William Osler-acupuncturist. Bull N Y Acad Med 1975; 51:393-400. [PMID: 1089020 PMCID: PMC1749442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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16
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17
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Tan LT, Tan MY, Veith I. Acupuncture therapy: current Chinese practice. Geriatrics (Basel) 1973; 28:97-102. [PMID: 4721745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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18
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Veith I. Acupuncture in traditional Chinese medicine. An historical review. Calif Med 1973; 118:70-9. [PMID: 4573752 PMCID: PMC1455171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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19
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20
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21
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22
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Veith I. "Education for morality". Sex education--Victorian style. Bull Menninger Clin 1970; 34:292-303. [PMID: 4918538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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23
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Veith I. The physician. Priest, craftsman or philosopher? Calif Med 1970; 113:20-6. [PMID: 5457512 PMCID: PMC1501551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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24
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Veith I. Elizabethans on melancholia. JAMA 1970; 212:127-31. [PMID: 4907549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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25
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Veith I. Historical reflections on the changing concepts of disease. Calif Med 1969; 110:501-6. [PMID: 4892520 PMCID: PMC1503537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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26
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Veith I. English melancholy and American nervousness. Bull Menninger Clin 1968; 32:301-7. [PMID: 4878761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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27
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Veith I. Medicare in utopia. Perspect Biol Med 1967; 11:91-110. [PMID: 25578167 DOI: 10.1353/pbm.1967.0020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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28
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Veith I, Minami A. A Buddhist prayer against sickness. Hist Relig 1966; 5:239-249. [PMID: 19938383 DOI: 10.1086/462524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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29
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Veith I. On "the loneliness of Freud's achievement". Bull Menninger Clin 1965; 29:245-55. [PMID: 5318412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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