Article (Scientific journals)
BRCAness, SLFN11, and RB1 loss predict response to topoisomerase I inhibitors in triple-negative breast cancers
Coussy, F.; El-Botty, R.; Château-Joubert, S. et al.
2020In Science Translational Medicine, 12 (532)
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Keywords :
DNA topoisomerase inhibitor; Article; BRCAness gene; RB1 gene; SLFN11 gene
Abstract :
[en] Topoisomerase I (TOP1) inhibitors trap TOP1 cleavage complexes resulting in DNA double-strand breaks (DSBs) during replication, which are repaired by homologous recombination (HR). Triple-negative breast cancer (TNBC) could be eligible for TOP1 inhibitors given the considerable proportion of tumors with a defect in HR-mediated repair (BRCAness). The TOP1 inhibitor irinotecan was tested in 40 patient-derived xenografts (PDXs) of TNBC. BRCAness was determined with a single-nucleotide polymorphism (SNP) assay, and expression of Schlafen family member 11 (SLFN11) and retinoblastoma transcriptional corepressor 1 (RB1) was evaluated by real-time polymerase chain reaction (RT-PCR) and immunohistochemistry analyses. In addition, the combination of irinotecan and the ataxia telangiectasia and Rad3-related protein (ATR) inhibitor VE-822 was tested in SLFN11-negative PDXs, and two clinical non-camptothecin TOP1 inhibitors (LMP400 and LMP776) were tested. Thirty-eight percent of the TNBC models responded to irinotecan. BRCAness combined with high SLFN11 expression and RB1 loss identified highly sensitive tumors, consistent with the notion that deficiencies in cell cycle checkpoints and DNA repair result in high sensitivity to TOP1 inhibitors. Treatment by the ATR inhibitor VE-822 increased sensitivity to irinotecan in SLFN11-negative PDXs and abolished irinotecan-induced phosphorylation of checkpoint kinase 1 (CHK1). LMP400 (indotecan) and LMP776 (indimitecan) showed high antitumor activity in BRCA1-mutated or BRCAness-positive PDXs. Last, low SLFN11 expression was associated with poor survival in 250 patients with TNBC treated with anthracycline-based chemotherapy. In conclusion, a substantial proportion of TNBC respond to irinotecan. BRCAness, high SLFN11 expression, and RB1 loss are highly predictive of response to irinotecan and the clinical indenoisoquinoline TOP1 inhibitors. Copyright © 2020 The Authors, some rights reserved.
Disciplines :
Oncology
Author, co-author :
Coussy, F.;  Translational Research Department, Institut Curie, PSL Research University, Paris, 75005, France, Medical Oncology Department, Institut Curie, PSL Research University, Paris, 75005, France, Genetics Department, Institut Curie, PSL Research University, Paris, 75005, France
El-Botty, R.;  Translational Research Department, Institut Curie, PSL Research University, Paris, 75005, France
Château-Joubert, S.;  BioPôle Alfort, Ecole Nationale Vétérinaire d'Alfort, Maisons Alfort, 94704, France
Dahmani, A.;  Translational Research Department, Institut Curie, PSL Research University, Paris, 75005, France
Montaudon, E.;  Translational Research Department, Institut Curie, PSL Research University, Paris, 75005, France
Leboucher, S.;  Institut Curie, PSL Research University, UMR3306, Orsay, 91405, France
Morisset, L.;  Translational Research Department, Institut Curie, PSL Research University, Paris, 75005, France
Painsec, P.;  Translational Research Department, Institut Curie, PSL Research University, Paris, 75005, France
Sourd, L.;  Translational Research Department, Institut Curie, PSL Research University, Paris, 75005, France
Huguet, L.;  Translational Research Department, Institut Curie, PSL Research University, Paris, 75005, France
Nemati, F.;  Translational Research Department, Institut Curie, PSL Research University, Paris, 75005, France
Servely, J.-L.;  BioPôle Alfort, Ecole Nationale Vétérinaire d'Alfort, Maisons Alfort, 94704, France, INRA, PHASE Department, Nouzilly, 37380, France
Larcher, T.;  INRA, APEX-PAnTher, Oniris, Nantes, 44300, France
Vacher, S.;  Genetics Department, Institut Curie, PSL Research University, Paris, 75005, France
Briaux, A.;  Genetics Department, Institut Curie, PSL Research University, Paris, 75005, France
Reyes, C.;  Translational Research Department, Institut Curie, PSL Research University, Paris, 75005, France
La Rosa, P.;  INSERM, U900, Paris, 75005, France, Institut Curie, PSL Research University, Paris, 75005, France
Lucotte, G.;  INSERM, U900, Paris, 75005, France, Institut Curie, PSL Research University, Paris, 75005, France
Popova, T.;  Institut Curie, PSL Research University, Paris, 75005, France, INSERM U830, Paris, 75005, France
Foidart, Pierre ;  Université de Liège - ULiège > Cancer-Tumours and development biology
Sounni, Nor Eddine  ;  Université de Liège - ULiège > Cancer-Tumours and development biology
Noël, Agnès ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Decaudin, D.;  Translational Research Department, Institut Curie, PSL Research University, Paris, 75005, France, Medical Oncology Department, Institut Curie, PSL Research University, Paris, 75005, France
Fuhrmann, L.;  Department of Pathology, Institut Curie, PSL Research University, Paris, 75005, France
Salomon, A.;  Department of Pathology, Institut Curie, PSL Research University, Paris, 75005, France
Reyal, F.;  Surgery Department, Institut Curie, PSL Research University, Paris, 75005, France, U932, Immunity and Cancer, INSERM, Institut Curie, Paris, 75005, France
Mueller, C.;  Queen's Cancer Research Institute, Queen's University, Kingston, ON K7L 3N6, Canada
Brugge, P. T.;  Division of Molecular Pathology, Cancer Genomics Centre Netherlands, Netherlands Cancer Institute, Amsterdam, 1066 CX, Netherlands
Jonkers, J.;  Division of Molecular Pathology, Cancer Genomics Centre Netherlands, Netherlands Cancer Institute, Amsterdam, 1066 CX, Netherlands
Poupon, M.-F.;  Translational Research Department, Institut Curie, PSL Research University, Paris, 75005, France
Stern, M.-H.;  Institut Curie, PSL Research University, Paris, 75005, France, INSERM U830, Paris, 75005, France
Bièche, I.;  Genetics Department, Institut Curie, PSL Research University, Paris, 75005, France
Pommier, Y.;  Developmental Therapeutics Branch and Laboratory of Molecular Pharmacology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, United States
Marangoni, E.;  Translational Research Department, Institut Curie, PSL Research University, Paris, 75005, France
More authors (24 more) Less
Language :
English
Title :
BRCAness, SLFN11, and RB1 loss predict response to topoisomerase I inhibitors in triple-negative breast cancers
Publication date :
2020
Journal title :
Science Translational Medicine
ISSN :
1946-6234
eISSN :
1946-6242
Publisher :
American Association for the Advancement of Science
Volume :
12
Issue :
532
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
INCa-DGOS-Inserm_12554National Cancer Institute, NCI: BC-01-006161
Available on ORBi :
since 08 July 2020

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