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Kalmuk L, Fernandes M, Morabito A, Grumolato L, Tulasne D, Kherrouche Z, Cortot A. Implication des mutations de MET dans la résistance aux inhibiteurs de l’EGFR des cancers bronchiques non à petites cellules. Rev Mal Respir 2021. [DOI: 10.1016/j.rmr.2021.02.023] [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] [Indexed: 11/29/2022]
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Baldacci S, Figeac M, Antoine M, Descarpentries C, Kherrouche Z, Jamme P, Copin M, Tulasne D, Nanni I, Beau-Faller M, Melaabi S, Levallet G, Quoix E, Moro-Sibilot D, Friard S, Missy P, Barlesi F, Cadranel J, Cortot A. P2.14-53 High MET Overexpression Does Not Predict the Presence of MET Exon 14 Splice Mutations in NSCLC: Results from the IFCT Predict.amm Study. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1838] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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JAMME P, Escande F, Descarpentries C, Copin M, Dansin E, Vanparis T, Tulasne D, Baldacci S, Kherrouche Z, Cortot A. Clinical characteristics and outcomes of non-small cell lung cancer (NSCLC) patients harboring MET exon 14 splice sites mutations. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.114] [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] [Indexed: 11/14/2022] Open
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Baldacci S, Kherrouche Z, Descarpentries C, Wislez M, Dansin E, Furlan A, Tulasne D, Cortot AB. [MET exon 14 splicing sites mutations: A new therapeutic opportunity in lung cancer]. Rev Mal Respir 2018; 35:796-812. [PMID: 30174236 DOI: 10.1016/j.rmr.2018.01.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Accepted: 01/08/2018] [Indexed: 01/23/2023]
Abstract
The mutations leading to MET exon 14 skipping represent a new class of molecular alterations described in various cancers. These alterations are observed in 2 to 3 % of cases of non-small cell lung cancer (NSCLC). Several cases of NSCLC carrying such alterations and achieving objective response to MET tyrosine kinase inhibitorshave recently been published. This review summarizes the molecular mechanisms responsible for MET exon 14 skipping as well as the consequences of the loss of this exon on receptor activity. We also describe the clinical characteristics of patients with METΔ14 mutations. Finally, we address the issues related to the detection of these mutations in lung cancer, and the need to anticipate resistance to MET inhibitors.
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Affiliation(s)
- S Baldacci
- Université Lille, CNRS, UMR 8161-M3T, mécanismes de tumorigenèse et thérapies ciblées, Institut Pasteur de Lille, 59000 Lille, France; Service de pneumologie et oncologie thoracique, OncoLille, université de Lille, CHU de Lille, 59000 Lille, France
| | - Z Kherrouche
- Université Lille, CNRS, UMR 8161-M3T, mécanismes de tumorigenèse et thérapies ciblées, Institut Pasteur de Lille, 59000 Lille, France
| | - C Descarpentries
- Service de biochimie et biologie moléculaire, plateforme de biologie moléculaire des cancers, CHU de Lille, 59000 Lille, France
| | - M Wislez
- Service de pneumologie, hôpital Tenon, AP-HP, 75020 Paris , France
| | - E Dansin
- Département de cancérologie cervico-faciale & thoracique, CLCC Oscar Lambret, 59000 Lille, France
| | - A Furlan
- Université Lille, CNRS, UMR 8161-M3T, mécanismes de tumorigenèse et thérapies ciblées, Institut Pasteur de Lille, 59000 Lille, France; Équipe de biophotonique cellulaire fonctionnelle, université Lille, CNRS UMR 8523 PhLAM, 59000 Lille, France
| | - D Tulasne
- Université Lille, CNRS, UMR 8161-M3T, mécanismes de tumorigenèse et thérapies ciblées, Institut Pasteur de Lille, 59000 Lille, France
| | - A B Cortot
- Université Lille, CNRS, UMR 8161-M3T, mécanismes de tumorigenèse et thérapies ciblées, Institut Pasteur de Lille, 59000 Lille, France; Service de pneumologie et oncologie thoracique, OncoLille, université de Lille, CHU de Lille, 59000 Lille, France.
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Jamme P, Descarpentries C, Wislez M, Dansin E, Grégoire V, Baldacci S, Escande F, Mathiot N, Kyheng M, Kherrouche Z, Copin M, Cortot A. MA 07.06 Detection of Mechanisms of Resistance to ALK Inhibitors in Routine Practice: A Retrospective Study. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.507] [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] [Indexed: 10/18/2022]
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Stoven L, Kherrouche Z, Cortot A. Étude des réponses biologiques induites par le récepteur Met lors de la résistance aux inhibiteurs d’EGFR dans les adénocarcinomes pulmonaires. Rev Mal Respir 2015. [DOI: 10.1016/j.rmr.2014.10.723] [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] [Indexed: 11/16/2022]
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Stoven L, Kherrouche Z, Cortot A. Étude des réponses biologiques induites par le récepteur Met lors de la résistance aux inhibiteurs d’EGFR dans les adénocarcinomes pulmonaires. Rev Mal Respir 2015. [DOI: 10.1016/j.rmr.2014.11.015] [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] [Indexed: 10/24/2022]
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Lefebvre J, Muharram G, Leroy C, Kherrouche Z, Montagne R, Ichim G, Tauszig-Delamasure S, Chotteau-Lelievre A, Brenner C, Mehlen P, Tulasne D. Caspase-generated fragment of the Met receptor favors apoptosis via the intrinsic pathway independently of its tyrosine kinase activity. Cell Death Dis 2013; 4:e871. [PMID: 24136235 PMCID: PMC3824686 DOI: 10.1038/cddis.2013.377] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 07/25/2013] [Accepted: 08/12/2013] [Indexed: 01/01/2023]
Abstract
The receptor tyrosine kinase Met and its ligand, the hepatocyte growth factor, are essential to embryonic development, whereas the deregulation of Met signaling is associated with tumorigenesis. While ligand-activated Met promotes survival, caspase-dependent generation of the p40 Met fragment leads to apoptosis induction - hallmark of the dependence receptor. Although the survival signaling pathways induced by Met are well described, the pro-apoptotic signaling pathways are unknown. We show that, although p40 Met contains the entire kinase domain, it accelerates apoptosis independently of kinase activity. In cell cultures undergoing apoptosis, the fragment shows a mitochondrial localization, required for p40 Met-induced cell death. Fulminant hepatic failure induced in mice leads to the generation of p40 Met localized also in the mitochondria, demonstrating caspase cleavage of Met in vivo. According to its localization, the fragment induces mitochondrial permeabilization, which is inhibited by Bak silencing and Bcl-xL overexpression. Moreover, Met silencing delays mitochondrial permeabilization induced by an apoptotic treatment. Thus, the Met-dependence receptor in addition to its well-known role in survival signaling mediated by its kinase activity, also participates in the intrinsic apoptosis pathway through the generation of p40 Met - a caspase-dependent fragment of Met implicated in the mitochondrial permeabilization process.
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Affiliation(s)
- J Lefebvre
- CNRS UMR 8161, Institut de Biologie de Lille - Institut Pasteur de Lille-IFR 142 - Université de Lille 1-Université de Lille 2, Lille, France
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Abstract
E2F6 is the most recently identified member of the E2F family. In this study, the murine E2F6 gene was cloned and found to consist of eight exons. Analysis of its 5' flanking region revealed two transcription start sites. The proximal promoter region contained no TATA or CAAT box. We also identified a novel E2F6 mRNA containing the alternative exon 2. The E2F6 mRNAs are highly expressed during mouse embryogenesis and are present in all adult tissues examined. Moreover, E2F6 shows a unique expression pattern in synchronized mouse embryonic fibroblasts. E2F6 expression rapidly increases during the G0-G1 transition, reaching its higher level in mid-G1, and remains relatively constant thereafter. These findings suggest that E2F6 may contribute to the regulation of events throughout the cell cycle. Isolation of the murine E2F6 gene is a step toward generation of genetically modified mouse models that will help to understand the functions of E2F6.
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Affiliation(s)
- Z Kherrouche
- Institut de Biologie de Lille, UMR 8526 CNRS/Institut Pasteur de Lille, 1 rue Calmette, 59021 Lille Cedex, France
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Kherrouche Z, Beuscart A, Huguet C, Flourens A, Moreau-Gachelin F, Stehelin D, Coll J. Isolation and characterization of a chicken homologue of the Spi-1/PU.1 transcription factor. Oncogene 1998; 16:1357-67. [PMID: 9546438 DOI: 10.1038/sj.onc.1201650] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Spi-1/PU.1 is a member of the Ets family of transcription factors important in regulation of hematopoiesis. We have isolated a chicken cDNA homologuous to the mammalian Spi-1/PU.1 gene with an open reading frame of 250 amino acids (aa). The chicken Spi-1/PU.1 protein is 14 aa and 16 aa shorter than its human and mouse counterparts but is extremely well conserved with 78.8% and 75.2% identity respectively. The carboxy terminal DNA binding region, or ETS binding domain, is 100% identical to that of human and mouse. Some differences with the mammalian homologues are seen in the N-terminal part of the protein and in the PEST connecting domain. However, the differences are mainly conservative and all the features underlying functional aspects seem preserved. The major discrepancy lies in a 12 aa deletion in an already poorly conserved part of the PEST sequence. Spi-1/PU.1 transcripts were detected at high levels in spleen and Fabricius bursa of chick embryos by Northern blot and in situ hybridization. Our results show that the chicken Spi-1/PU.1 protein behaves like a bonafide Spi-1/PU.1 transcription factor in its DNA binding and transactivating properties.
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Affiliation(s)
- Z Kherrouche
- Institut de Biologie de Lille, UMR 319 CNRS/Institut Pasteur de Lille, France
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Perros M, Deleu L, Vanacker JM, Kherrouche Z, Spruyt N, Faisst S, Rommelaere J. Upstream CREs participate in the basal activity of minute virus of mice promoter P4 and in its stimulation in ras-transformed cells. J Virol 1995; 69:5506-15. [PMID: 7636996 PMCID: PMC189402 DOI: 10.1128/jvi.69.9.5506-5515.1995] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The activity of the P4 promoter of the parvovirus minute virus of mice (prototype strain MVMp) is stimulated in ras-transformed FREJ4 cells compared with the parental FR3T3 line. This activation may participate in the oncolytic effect of parvoviruses, given that P4 drives a transcriptional unit encoding cytotoxic nonstructural proteins. Our results suggest that the higher transcriptional activity of promoter P4 in FREJ4 cells is mediated at least in part by upstream CRE elements. Accordingly, mutations in the CRE motifs impair P4 function more strongly in the FREJ4 derivative than in its FR3T3 parent. Further evidence that these elements contribute to hyperactivity of the P4 promoter in the ras transformant is the fact that they form distinct complexes with proteins from FREJ4 and FR3T3 cell extracts. This difference can be abolished by treating the FREJ4 cell extracts with cyclic AMP-dependent protein kinase (PKA) or treating original cultures with a PKA activator. These findings can be linked with two previously reported features of ras-transformed cells: the activation of a PKA-inhibited protein kinase cascade and the reduction of PKA-induced protein phosphorylation. In keeping with these facts, P4-directed gene expression can be up- or downmodulated in vivo by exposing cells to known inhibitors or activators of PKA, respectively.
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Affiliation(s)
- M Perros
- Molecular Oncology Unit, Centre National de la Recherche Scientifique URA1160, Institut Pasteur de Lille, France
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Montpellier C, Kherrouche Z, Begue A, Stehelin D, Coll J. Rab2 nucleotide coding sequence in gallus gallus and it phylogenetic position. DNA Seq 1995; 6:37-9. [PMID: 8746459 DOI: 10.3109/10425179509074697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The nucleic acid sequence of the chicken rab2 mRNA was determined by sequencing a full length cDNA. The phylogeny of rab2 sequences was established.
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Affiliation(s)
- C Montpellier
- Unite d'Oncologie Moleculaire (CNRS URA 1160), Institut Pasteur de Lille, Lille Cedex, France
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