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White K, Connor K, Meylan M, Bougoüin A, Salvucci M, Bielle F, O'Farrell AC, Sweeney K, Weng L, Bergers G, Dicker P, Ashley DM, Lipp ES, Low JT, Zhao J, Wen P, Prins R, Verreault M, Idbaih A, Biswas A, Prehn JHM, Lambrechts D, Arijs I, Lodi F, Dilcan G, Lamfers M, Leenstra S, Fabro F, Ntafoulis I, Kros JM, Cryan J, Brett F, Quissac E, Beausang A, MacNally S, O'Halloran P, Clerkin J, Bacon O, Kremer A, Chi Yen RT, Varn FS, Verhaak RGW, Sautès-Fridman C, Fridman WH, Byrne AT. Identification, validation and biological characterisation of novel glioblastoma tumour microenvironment subtypes: implications for precision immunotherapy. Ann Oncol 2023; 34:300-314. [PMID: 36494005 DOI: 10.1016/j.annonc.2022.11.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND New precision medicine therapies are urgently required for glioblastoma (GBM). However, to date, efforts to subtype patients based on molecular profiles have failed to direct treatment strategies. We hypothesised that interrogation of the GBM tumour microenvironment (TME) and identification of novel TME-specific subtypes could inform new precision immunotherapy treatment strategies. MATERIALS AND METHODS A refined and validated microenvironment cell population (MCP) counter method was applied to >800 GBM patient tumours (GBM-MCP-counter). Specifically, partition around medoids (PAM) clustering of GBM-MCP-counter scores in the GLIOTRAIN discovery cohort identified three novel patient clusters, uniquely characterised by TME composition, functional orientation markers and immune checkpoint proteins. Validation was carried out in three independent GBM-RNA-seq datasets. Neoantigen, mutational and gene ontology analysis identified mutations and uniquely altered pathways across subtypes. The longitudinal Glioma Longitudinal AnalySiS (GLASS) cohort and three immunotherapy clinical trial cohorts [treatment with neoadjuvant/adjuvant anti-programmed cell death protein 1 (PD-1) or PSVRIPO] were further interrogated to assess subtype alterations between primary and recurrent tumours and to assess the utility of TME classifiers as immunotherapy biomarkers. RESULTS TMEHigh tumours (30%) displayed elevated lymphocyte, myeloid cell immune checkpoint, programmed cell death protein 1 (PD-1) and cytotoxic T-lymphocyte-associated protein 4 transcripts. TMEHigh/mesenchymal+ patients featured tertiary lymphoid structures. TMEMed (46%) tumours were enriched for endothelial cell gene expression profiles and displayed heterogeneous immune populations. TMELow (24%) tumours were manifest as an 'immune-desert' group. TME subtype transitions upon recurrence were identified in the longitudinal GLASS cohort. Assessment of GBM immunotherapy trial datasets revealed that TMEHigh patients receiving neoadjuvant anti-PD-1 had significantly increased overall survival (P = 0.04). Moreover, TMEHigh patients treated with adjuvant anti-PD-1 or oncolytic virus (PVSRIPO) showed a trend towards improved survival. CONCLUSIONS We have established a novel TME-based classification system for application in intracranial malignancies. TME subtypes represent canonical 'termini a quo' (starting points) to support an improved precision immunotherapy treatment approach.
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Affiliation(s)
- K White
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - K Connor
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - M Meylan
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université de Paris, Paris, France
| | - A Bougoüin
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université de Paris, Paris, France
| | - M Salvucci
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - F Bielle
- Paris Brain Institute (ICM), CNRS UMR 7225, Inserm U 1127, UPMC-P6 UMR S 1127, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - A C O'Farrell
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - K Sweeney
- National Centre of Neurosurgery, Beaumont Hospital, Dublin, Ireland
| | - L Weng
- VIB-KU Leuven Center for Cancer Biology, Department of Oncology, Leuven, Belgium
| | - G Bergers
- VIB-KU Leuven Center for Cancer Biology, Department of Oncology, Leuven, Belgium
| | - P Dicker
- Epidemiology & Public Health, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - D M Ashley
- Duke Cancer Institute, Duke University, Durham, USA
| | - E S Lipp
- Duke Cancer Institute, Duke University, Durham, USA
| | - J T Low
- Duke Cancer Institute, Duke University, Durham, USA
| | - J Zhao
- Department of Systems Biology at Columbia University, New York, USA
| | - P Wen
- Center for Neuro-Oncology, Dana-Farber Cancer Institute, Boston, USA
| | - R Prins
- Department of Medical and Molecular Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, USA
| | - M Verreault
- Paris Brain Institute (ICM), CNRS UMR 7225, Inserm U 1127, UPMC-P6 UMR S 1127, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - A Idbaih
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Paris Brain Institute (ICM), AP-HP, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix, Paris, France
| | - A Biswas
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - J H M Prehn
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - D Lambrechts
- Laboratory for Translational Genetics, Department of Human Genetics, Leuven, Belgium; VIB Center for Cancer Biology, Leuven, Belgium
| | - I Arijs
- Laboratory for Translational Genetics, Department of Human Genetics, Leuven, Belgium; VIB Center for Cancer Biology, Leuven, Belgium
| | - F Lodi
- Laboratory for Translational Genetics, Department of Human Genetics, Leuven, Belgium; VIB Center for Cancer Biology, Leuven, Belgium
| | - G Dilcan
- Laboratory for Translational Genetics, Department of Human Genetics, Leuven, Belgium; VIB Center for Cancer Biology, Leuven, Belgium
| | - M Lamfers
- Department of Neurosurgery, Brain Tumor Center, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - S Leenstra
- Department of Neurosurgery, Brain Tumor Center, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - F Fabro
- Department of Neurosurgery, Brain Tumor Center, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - I Ntafoulis
- Department of Neurosurgery, Brain Tumor Center, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - J M Kros
- Department of Pathology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - J Cryan
- Department of Neuropathology, Beaumont Hospital, Dublin, Ireland
| | - F Brett
- Department of Neuropathology, Beaumont Hospital, Dublin, Ireland
| | - E Quissac
- Paris Brain Institute (ICM), CNRS UMR 7225, Inserm U 1127, UPMC-P6 UMR S 1127, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - A Beausang
- Department of Neuropathology, Beaumont Hospital, Dublin, Ireland
| | - S MacNally
- National Centre of Neurosurgery, Beaumont Hospital, Dublin, Ireland
| | - P O'Halloran
- National Centre of Neurosurgery, Beaumont Hospital, Dublin, Ireland
| | - J Clerkin
- National Centre of Neurosurgery, Beaumont Hospital, Dublin, Ireland
| | - O Bacon
- Department of Neuropathology, Beaumont Hospital, Dublin, Ireland
| | - A Kremer
- Information Technology for Translational Medicine (ITTM), Luxembourg, Luxembourg
| | - R T Chi Yen
- Information Technology for Translational Medicine (ITTM), Luxembourg, Luxembourg
| | - F S Varn
- The Jackson Laboratory for Genomic Medicine, Farmington, USA
| | - R G W Verhaak
- The Jackson Laboratory for Genomic Medicine, Farmington, USA; Department of Neurosurgery, Cancer Center Amsterdam, Amsterdam University Medical Centers, VU University Medical Center, Amsterdam, the Netherlands
| | - C Sautès-Fridman
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université de Paris, Paris, France
| | - W H Fridman
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université de Paris, Paris, France
| | - A T Byrne
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland.
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Birzu C, Boussier J, Belin L, Da Costa Pereira T, Quissac E, Zerara M, Lemaire N, Mokhtari K, Verreault M, Idbaih A. P10.17.B Androgen receptor signalling has independent prognostic value and is associated with resistance to temozolomide and tumour growth in glioblastoma. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac174.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The spectrum of sex differences in glioblastoma (GBM) is a rising topic. GBM is more frequent (sex ratio M:F=1.6) and seem to have worse prognosis in males (M) compared to females. Androgen receptor (AR) is expressed in GBM but its role in GBM biology and clinics is not yet fully understood.
Material and Methods
We have selected from our tumour tissue bank: (i) GBM samples with clinical, pathological and molecular annotations and (ii) GBM-patient derived cell lines -GBM-PDCL- with transcriptomic profiling and available tissue from parental tumours.AR expression was investigated using multiplex IHC Opal stained-FFPE sections. Sensitivity of PDCL to hormonotherapy (dihydrotestosterone or enzalutamide EZT) alone or combined with temozolomide (TMZ) was tested using WST1 viability assay. Response to drugs were correlated to AR expression (high: log2 [FPKM] >2 or low: log2 [FPKM] <2). PDCLs dihydrotestosterone secretion was examined by ELISA in both supernatants and cell lysates.
Results
In our cohort of 1188 IDH muted GBM patients, the median follow-up was 27.7 (25.8-31.3). The sex ratio M:F was 1.68 and the median age at diagnosis was 57 years [18-69]. Compared to males, females have better prognosis with a median overall survival of 26.1 months vs 20.8 months (p<0.0001). In multivariate analysis, male gender was an independent prognostic factor with a HR of 1.43 CI95%(1.21-1.69) (p<0.0001) adjusted on age, MGMT status and Karnofsky indice . Although interaction between age and sex was not significant (p = 0.854), HR of gender varied through age category 1.53 CI95%( 1.01-2.33 ), 1.51 CI95%( 0.888-2.55 ) and 1.38 CI95%( 0.857-2.21) for males <45 years, between 46-55 years and > 55 years respectively. In GBM tumours, AR staining was positive in 5- 30% tumour cells. After 72h exposure to 10nM dihydrotestosterone, ARhigh GBM-PDCLs exhibit AR nuclear translocation and c-myc expression upregulation, suggesting functional activation of the receptor. AR pharmacological blockade increased temozolomide sensitivity in ARhigh GBM-PDCLs regardless of the patient’s sex. Moreover, ARhigh PDCLs secreted DHT, suggesting autocrine and paracrine AR stimulation in tumour microenvironment.
Conclusion
Our study highlights the independent prognostic significance of sex in GBM patients, where males exhibit a worse prognosis. In GBM-PDCL, we show that androgen receptor is (i) functional in vitro and (ii) associated with resistance to temozolomide. Further studies are needed to investigate the role of AR in tumour tissue microenvironment.
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Affiliation(s)
- C Birzu
- Institut du Cerveau, ICM, AP-HP, Inserm, UMR S 1127, Sorbonne Université, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix, , Paris , France
- Service de Neurologie 2-Mazarin Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix, , Paris , France
| | - J Boussier
- AP-HP, Hôpitaux Universitaires Pitié-Salpêtrière – Charles Foix, Département de Santé Publique, , Paris , France
| | - L Belin
- INSERM, Institut Pierre Louis d’Epidémiologie et de Santé Publique, AP-HP, Hôpitaux Universitaires Pitié-Salpêtrière – Charles Foix, Département de Santé Publique, , Paris , France
| | - T Da Costa Pereira
- Institut du Cerveau, ICM, AP-HP, Inserm, UMR S 1127, Sorbonne Université, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix , Paris , France
| | - E Quissac
- Institut du Cerveau, ICM, AP-HP, Inserm, UMR S 1127, Sorbonne Université, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix , Paris , France
| | - M Zerara
- Institut du Cerveau, ICM, AP-HP, Inserm, UMR S 1127, Sorbonne Université, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix , Paris , France
| | - N Lemaire
- Institut du Cerveau, ICM, AP-HP, Inserm, UMR S 1127, Sorbonne Université, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix , Paris , France
| | - K Mokhtari
- Service de Neuropathologie Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix , Paris , France
- Institut du Cerveau, ICM, AP-HP, Inserm, UMR S 1127, Sorbonne Université, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix , Paris , France
| | - M Verreault
- Institut du Cerveau, ICM, AP-HP, Inserm, UMR S 1127, Sorbonne Université, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix , Paris , France
| | - A Idbaih
- Institut du Cerveau, ICM, AP-HP, Inserm, UMR S 1127, Sorbonne Université, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix , Paris , France
- Service de Neurologie 2-Mazarin Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix , Paris , France
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Birzu C, Boussier J, Belin L, Lemaire N, Da Costa Pereira T, Mokhtari K, Verreault M, Idbaih A. 292P Androgen receptor signalling is associated with resistance to temozolomide and tumour growth in glioblastoma. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.426] [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] Open
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Mennillo E, Yang X, Weber AA, Maruo Y, Verreault M, Barbier O, Chen S, Tukey RH. Intestinal UDP-Glucuronosyltransferase 1A1 and Protection against Irinotecan-Induced Toxicity in a Novel UDP-Glucuronosyltransferase 1A1 Tissue-Specific Humanized Mouse Model. Drug Metab Dispos 2022; 50:33-42. [PMID: 34697081 PMCID: PMC8969198 DOI: 10.1124/dmd.121.000644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/19/2021] [Indexed: 01/03/2023] Open
Abstract
The human UDP-glucuronosyltransferases (UGTs) represent an important family of drug-metabolizing enzymes, with UGT1A1 targeting the conjugation and detoxification of many exogenous substances, including pharmaceutical drugs. In this study we generated humanized UGT1A1 mice expressing the human UGT1A1 gene in either liver (hUGT1A1HEP ) or intestine (hUGT1A1GI ), enabling experiments to examine tissue-specific properties of UGT1A1-specific glucuronidation. Hepatic and intestinal tissue-specific expression and function of UGT1A1 were demonstrated. Although the liver is considered a major organ for detoxification, intestinal UGT1A1 is an important contributor for drug clearance. Mice were challenged with irinotecan (CPT-11), a prodrug hydrolyzed by carboxylesterases to form the active metabolite 7-ethyl-10-hydroxycamptothecin (SN-38) and detoxified by UGT1A1. Humanized UGT1A1HEP mice that have no intestinal UGT1A1 displayed a greater lethality rate when exposed to CPT-11 than hUGT1A1GI mice. When exposed to a low dose of CPT-11 (10 mg/kg), hUGT1A1HEP mice displayed greater intestinal inflammatory (IL-1β and IL-6) insult in addition to p53-triggered apoptotic responses. In vitro studies with intestinal crypt organoids exposed to CPT-11 confirmed the results observed in vivo and indicated that CPT-11 impacts stemness, apoptosis, and endoplasmic reticulum (ER) stress in organoids deficient in UGT1A1. When we examined the induction of ER stress in organoids with thapsigargin, an inhibitor of sarco/endoplasmic reticulum Ca2+ ATPase, apoptosis and the caspase surge that occurred in hUGT1A1HEP mice were blocked in hUGT1A1GI organoids. This study reveals the importance of intestinal UGT1A1 in preventing inflammation, apoptosis, and loss of stemness capacity upon systemic challenge with an important chemotherapeutic agent. SIGNIFICANCE STATEMENT: Hepatic and intestinal UGT1A1 play a key role in the metabolism and detoxification of endogenous and exogenous compounds. The use of tissue-specific humanized models expressing UGT1A1 in liver or intestine has confirmed the relevance of the intestinal tract in the detoxification of irinotecan. Mechanistic studies using intestinal organoids highlighted the importance of UGT1A1 in reducing inflammation, apoptosis, and loss of stemness. These new models provide valuable tools for studying tissue-specific glucuronidation of substances that are metabolized by human UGT1A1.
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Affiliation(s)
- Elvira Mennillo
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California San Diego, La Jolla, California (E.M., X.Y., A.A.W., S.C., R.H.T.); Department of Pediatrics, Shiga University of Medical Science, Otsu, Shiga, Japan (Y.M.); and Laboratory of Moléculaire Pharmacology, Centre de Recherche du CHU de Québec, Faculté of Pharmacie, Université Laval Québec, Québec, Canada (M.V., O.B.)
| | - Xiaojing Yang
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California San Diego, La Jolla, California (E.M., X.Y., A.A.W., S.C., R.H.T.); Department of Pediatrics, Shiga University of Medical Science, Otsu, Shiga, Japan (Y.M.); and Laboratory of Moléculaire Pharmacology, Centre de Recherche du CHU de Québec, Faculté of Pharmacie, Université Laval Québec, Québec, Canada (M.V., O.B.)
| | - Andre A Weber
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California San Diego, La Jolla, California (E.M., X.Y., A.A.W., S.C., R.H.T.); Department of Pediatrics, Shiga University of Medical Science, Otsu, Shiga, Japan (Y.M.); and Laboratory of Moléculaire Pharmacology, Centre de Recherche du CHU de Québec, Faculté of Pharmacie, Université Laval Québec, Québec, Canada (M.V., O.B.)
| | - Yoshihiro Maruo
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California San Diego, La Jolla, California (E.M., X.Y., A.A.W., S.C., R.H.T.); Department of Pediatrics, Shiga University of Medical Science, Otsu, Shiga, Japan (Y.M.); and Laboratory of Moléculaire Pharmacology, Centre de Recherche du CHU de Québec, Faculté of Pharmacie, Université Laval Québec, Québec, Canada (M.V., O.B.)
| | - Melanie Verreault
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California San Diego, La Jolla, California (E.M., X.Y., A.A.W., S.C., R.H.T.); Department of Pediatrics, Shiga University of Medical Science, Otsu, Shiga, Japan (Y.M.); and Laboratory of Moléculaire Pharmacology, Centre de Recherche du CHU de Québec, Faculté of Pharmacie, Université Laval Québec, Québec, Canada (M.V., O.B.)
| | - Olivier Barbier
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California San Diego, La Jolla, California (E.M., X.Y., A.A.W., S.C., R.H.T.); Department of Pediatrics, Shiga University of Medical Science, Otsu, Shiga, Japan (Y.M.); and Laboratory of Moléculaire Pharmacology, Centre de Recherche du CHU de Québec, Faculté of Pharmacie, Université Laval Québec, Québec, Canada (M.V., O.B.)
| | - Shujuan Chen
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California San Diego, La Jolla, California (E.M., X.Y., A.A.W., S.C., R.H.T.); Department of Pediatrics, Shiga University of Medical Science, Otsu, Shiga, Japan (Y.M.); and Laboratory of Moléculaire Pharmacology, Centre de Recherche du CHU de Québec, Faculté of Pharmacie, Université Laval Québec, Québec, Canada (M.V., O.B.)
| | - Robert H Tukey
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California San Diego, La Jolla, California (E.M., X.Y., A.A.W., S.C., R.H.T.); Department of Pediatrics, Shiga University of Medical Science, Otsu, Shiga, Japan (Y.M.); and Laboratory of Moléculaire Pharmacology, Centre de Recherche du CHU de Québec, Faculté of Pharmacie, Université Laval Québec, Québec, Canada (M.V., O.B.)
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5
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White K, Connor K, Clerkin J, Murphy BM, Salvucci M, O'Farrell AC, Rehm M, O'Brien D, Prehn JHM, Niclou SP, Lamfers MLM, Verreault M, Idbaih A, Verhaak R, Golebiewska A, Byrne AT. New hints towards a precision medicine strategy for IDH wild-type glioblastoma. Ann Oncol 2020; 31:1679-1692. [PMID: 32918998 DOI: 10.1016/j.annonc.2020.08.2336] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [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: 05/13/2020] [Revised: 08/18/2020] [Accepted: 08/31/2020] [Indexed: 12/11/2022] Open
Abstract
Glioblastoma represents the most common primary malignancy of the central nervous system in adults and remains a largely incurable disease. The elucidation of disease subtypes based on mutational profiling, gene expression and DNA methylation has so far failed to translate into improved clinical outcomes. However, new knowledge emerging from the subtyping effort in the IDH-wild-type setting may provide directions for future precision therapies. Here, we review recent learnings in the field, and further consider how tumour microenvironment differences across subtypes may reveal novel contexts of vulnerability. We discuss recent treatment approaches and ongoing trials in the IDH-wild-type glioblastoma setting, and propose an integrated discovery stratagem incorporating multi-omics, single-cell technologies and computational approaches.
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Affiliation(s)
- K White
- Precision Cancer Medicine Group, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - K Connor
- Precision Cancer Medicine Group, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - J Clerkin
- Precision Cancer Medicine Group, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland; National Neurosurgical Department, Beaumont Hospital, Dublin, Ireland
| | - B M Murphy
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - M Salvucci
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - A C O'Farrell
- Precision Cancer Medicine Group, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - M Rehm
- Institute of Cell Biology and Immunology and Stuttgart Research Center Systems Biology, University of Stuttgart, Stuttgart, Germany
| | - D O'Brien
- National Neurosurgical Department, Beaumont Hospital, Dublin, Ireland
| | - J H M Prehn
- Centre for Systems Medicine, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - S P Niclou
- NORLUX Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health, Luxembourg
| | - M L M Lamfers
- Department of Neurosurgery, Brain Tumor Center, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - M Verreault
- Sorbonne Université, Institut du Cerveau et de la Moelle Épinière, Hôpitaux Universitaires La Pitié Salpêtrière - Charles Foix, Service de Neurologie, Paris, France
| | - A Idbaih
- Sorbonne Université, Institut du Cerveau et de la Moelle Épinière, Hôpitaux Universitaires La Pitié Salpêtrière - Charles Foix, Service de Neurologie, Paris, France
| | - R Verhaak
- Jackson Laboratory for Genomic Medicine, Farmington, USA
| | - A Golebiewska
- NORLUX Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health, Luxembourg
| | - A T Byrne
- Precision Cancer Medicine Group, Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland.
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Verreault M, Wehbe M, Strutt D, Masin D, Anantha M, Walker D, Chu F, Backstrom I, Kalra J, Waterhouse D, Yapp DT, Bally MB. Determination of an optimal dosing schedule for combining Irinophore C™ and temozolomide in an orthotopic model of glioblastoma. J Control Release 2015; 220:348-357. [PMID: 26528901 DOI: 10.1016/j.jconrel.2015.10.053] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 10/22/2015] [Accepted: 10/28/2015] [Indexed: 12/30/2022]
Abstract
Our laboratory reported that Irinophore C™ (IrC™; a lipid-based nanoparticulate formulation of irinotecan) is effective against an orthotopic model of glioblastoma (GBM) and that treatment with IrC™ was associated with vascular normalization within the tumor. Here, the therapeutic effects of IrC™ when used in combination with temozolomide (TMZ) in concurrent and sequential treatment schedules were tested. It was anticipated that IrC™ engendered vascular normalization would increase the delivery of TMZ to the tumor and that this would be reflected by improved treatment outcomes. The approach compared equally efficacious doses of irinotecan (IRN; 50 mg/kg) and IrC™ (25 mg/kg) in order to determine if there was a unique advantage achieved when combining TMZ with IrC™. The TMZ sensitive U251MG(O) cell line (null expression of O-6-methylguanine-DNA methyltransferase (MGMT)) modified to express the fluorescent protein mKate2 was inoculated orthotopically into NOD.CB17-SCID mice and treatment was initiated 14 days later. Our results demonstrated that IrC™ and TMZ administered concurrently resulted in optimal treatment outcomes, with 50% long term survivors (>180 days) in comparison to 17% long term survivors in animals treated with IRN and TMZ or TMZ alone. Indeed, the different treatments resulted in a 353%, 222% and 280% increase in median survival time (MST) compared to untreated animals for, respectively, IrC™ combined with TMZ, IRN combined with TMZ, and TMZ alone. When TMZ was administered after completion of IRN or IrC™ dosing, an increase in median survival time of 167-174% was observed compared to untreated animals and of 67% and 74%, respectively, when IRN (50 mg/kg) and IrC™ (25mg/kg) were given as single agents. We confirmed in these studies that after completion of the Q7D×3 dosing of IrC™, but not IRN, the tumor-associated vascular was normalized as compared to untreated tumors. Specifically, reductions in the fraction of collagen IV-free CD31 staining (p<0.05) and reductions in tumor vessel diameter were observed in tumors from IrC™-treated animals when compared to tumors from untreated or IRN treated animals. Analysis by transmission electron microscopy of the ultra-structure of tumors from IrC™-treated and untreated animals revealed that tumor-associated vessels from treated animals were smaller, more organized and exhibited a morphology comparable to normal blood vessels. In conclusion, optimal treatment outcomes were achieved when IrC™ and TMZ were administered concurrently, whereas IrC™ followed by TMZ treatment given sequentially did not confer any therapeutic advantage.
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Affiliation(s)
- M Verreault
- Brain and Spine Institute Research Center, 47 Bd de l'Hopital, Paris, 75013, France.
| | - M Wehbe
- Experimental Therapeutics, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, V5Z 1L3, BC, Canada; Faculty of Pharmaceutical Sciences, University of British Columbia, 2146 East Mall, Vancouver V6T 1Z3, BC, Canada
| | - D Strutt
- Experimental Therapeutics, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, V5Z 1L3, BC, Canada
| | - D Masin
- Experimental Therapeutics, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, V5Z 1L3, BC, Canada
| | - M Anantha
- Experimental Therapeutics, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, V5Z 1L3, BC, Canada
| | - D Walker
- Ultrastructural Imaging, UBC James Hogg Research Laboratories (iCAPTURE), Providence Heart and Lung Institute, St. Paul's Hospital, Rm 166, 1081 Burrard St, Vancouver, BC, Canada
| | - F Chu
- Ultrastructural Imaging, UBC James Hogg Research Laboratories (iCAPTURE), Providence Heart and Lung Institute, St. Paul's Hospital, Rm 166, 1081 Burrard St, Vancouver, BC, Canada
| | - I Backstrom
- Experimental Therapeutics, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, V5Z 1L3, BC, Canada
| | - J Kalra
- Experimental Therapeutics, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, V5Z 1L3, BC, Canada
| | - D Waterhouse
- Experimental Therapeutics, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, V5Z 1L3, BC, Canada
| | - D T Yapp
- Experimental Therapeutics, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, V5Z 1L3, BC, Canada; Faculty of Pharmaceutical Sciences, University of British Columbia, 2146 East Mall, Vancouver V6T 1Z3, BC, Canada
| | - M B Bally
- Experimental Therapeutics, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, V5Z 1L3, BC, Canada; Faculty of Pharmaceutical Sciences, University of British Columbia, 2146 East Mall, Vancouver V6T 1Z3, BC, Canada; Department of Pathology and Laboratory Medicine, University of British Columbia, 2211 Wesbrook Mall, Vancouver V6T 2B5, BC, Canada; Center for Drug Research and Development, Vancouver V6T 1Z4, BC, Canada.
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7
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Verreault M, Levasseur C, Schmitt C, Guehennec J, Labussiere M, Marie Y, Haidar S, Mokhtari K, Hoang-Xuan K, Sanson M, Ligon K, Delattre JY, Idbaih A. ET-62 * HIGHLY SELECTIVE ACTIVITY OF MDM2 INHIBITOR RG7112 AGAINST MDM2-AMPLIFIED/TP53 WILD-TYPE GLIOBLASTOMAS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou255.59] [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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8
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Trottier J, Perreault M, Rudkowska I, Levy C, Dallaire-Theroux A, Verreault M, Caron P, Staels B, Vohl MC, Straka RJ, Barbier O. Profiling serum bile acid glucuronides in humans: gender divergences, genetic determinants, and response to fenofibrate. Clin Pharmacol Ther 2013; 94:533-43. [PMID: 23756370 PMCID: PMC4844538 DOI: 10.1038/clpt.2013.122] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [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: 02/07/2013] [Accepted: 05/31/2013] [Indexed: 12/12/2022]
Abstract
Glucuronidation, catalyzed by UDP-glucuronosyltransferase (UGT) enzymes detoxifies cholestatic bile acids (BAs). We aimed at i) characterizing the circulating BA-glucuronide (-G) pool composition in humans, ii) evaluating how sex and UGT polymorphisms influence this composition, and iii) analyzing the effects of lipid-lowering drug fenofibrate on the circulating BA-G profile in 300 volunteers and 5 cholestatic patients. Eleven BA-Gs were determined in pre- and post-fenofibrate samples. Men exhibited higher BA-G concentrations, and various genotype/BA-G associations were discovered in relevant UGT genes. The chenodeoxycholic acid-3G concentration was associated with the UGT2B7 802C>T polymorphism. Glucuronidation assays confirmed the predominant role of UGT2B7 and UGT1A4 in CDCA-3G formation. Fenofibrate exposure increased the serum levels of 5 BA-G species, including CDCA-3G, and up-regulated expression of UGT1A4, but not UGT2B7, in hepatic cells. This study demonstrates that fenofibrate stimulates BA glucuronidation in humans, and thus reduces bile acid toxicity in the liver.
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Affiliation(s)
- J Trottier
- Laboratory of Molecular Pharmacology, Endocrinology, and Nephrology, CHU-Québec Research Centre and the Faculty of Pharmacy, Laval University, Quebec City, Québec, Canada
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9
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Leonard A, Wolff J, Sengupta R, Marassa J, Piwnica-Worms D, Rubin J, Pollack I, Jakacki R, Butterfield L, Okada H, Fangusaro J, Warren KE, Mullins C, Jurgen P, Julia S, Friedrich CC, Keir S, Saling J, Roskoski M, Friedman H, Bigner D, Moertel C, Olin M, Dahlheimer T, Gustafson M, Sumstad D, McKenna D, Low W, Nascene D, Dietz A, Ohlfest J, Sturm D, Witt H, Hovestadt V, Quan DAK, Jones DTW, Konermann C, Pfaff E, Korshunov A, Rizhova M, Milde T, Witt O, Zapatka M, Collins VP, Kool M, Reifenberger G, Lichter P, Lindroth AM, Plass C, Jabado N, Pfister SM, Pizer B, Salehzadeh A, Brodbelt A, Mallucci C, Brassesco M, Pezuk J, Morales A, de Oliveira J, Roberto G, Umezawa K, Valera E, Rego E, Scrideli C, Tone L, Veringa SJE, Van Vuurden DG, Wesseling P, Vandertop WP, Noske DP, Wurdinger T, Kaspers GJL, Hulleman E, Wright K, Broniscer A, Bendel A, Bowers D, Crawford J, Fisher P, Hassall T, Armstrong G, Baker J, Qaddoumi I, Robinson G, Wetmore C, Klimo P, Boop F, Onar-Thomas A, Ellison D, Gajjar A, Cruz O, de Torres C, Sunol M, Rodriguez E, Alonso L, Parareda A, Cardesa T, Salvador H, Celis V, Guillen A, Garcia G, Muchart J, Trampal C, Martin ML, Rebollo M, Mora J, Piotrowski A, Kowalska A, Coyle P, Smith S, Rogers H, Macarthur D, Grundy R, Puccetti D, Salamat S, Kennedy T, Fangusaro J, Patel N, Bradley K, Casey K, Iskandar B, Nakano Y, Okada K, Osugi Y, Yamasaki K, Fujisaki H, Fukushima H, Inoue T, Matsusaka Y, Sakamoto H, Hara J, De Vleeschouwer S, Ardon H, Van Calenbergh F, Sciot R, Wilms G, Van Loon J, Goffin J, Van Gool S, Puccetti D, Salamat S, Rusinak D, Patel N, Bradley K, Casey K, Knight P, Onel K, Wargowski D, Stettner A, Iskandar B, Al-Ghafari A, Punjaruk W, Coyle B, Kerr I, Xipell E, Rodriguez M, Gonzalez-Huarriz M, Tunon MT, Zazpe I, Tejada-Solis S, Diez-Valle R, Fueyo J, Gomez-Manzano C, Alonso MM, Pastakia D, McCully C, Murphy R, Bacher J, Thomas M, Steffen-Smith E, Saleem K, Waldbridge S, Widemann B, Warren K, Miele E, Buttarelli F, Arcella A, Begalli F, Po A, Baldi C, Carissimo G, Antonelli M, Donofrio V, Morra I, Nozza P, Gulino A, Giangaspero F, Ferretti E, Elens I, De Vleeschouwer S, Pauwels F, Van Gool S, Fritzell S, Eberstal S, Sanden E, Visse E, Darabi A, Siesjo P, McDonald P, Wrogemann J, Krawitz S, Del Bigio M, Eisenstat D, Wolff J, Kwiecien R, Pietsch T, Faldum A, Kortmann RD, Warmuth-Metz M, Rutkowski S, Slavc I, Kramm CM, Uparkar U, Geyer R, Ermoian R, Ellenbogen R, Leary S, Triscott J, Hu K, Fotovati A, Yip S, Kast R, Toyota B, Dunn S, Hegde M, Corder A, Chow K, Mukherjee M, Ashoori A, Brawley V, Heslop H, Gottschalk S, Yvon E, Ahmed N, Wong TT, Yang FY, Lu M, Liang HF, Wang HE, Liu RS, Teng MC, Yen CC, Agnihotri S, Ternamian C, Jones C, Zadeh G, Rutka J, Hawkins C, Filipek I, Drogosiewicz M, Perek-Polnik M, Swieszkowska E, Baginska BD, Jurkiewicz E, Perek D, Kuehn A, Falkenstein F, Wolff J, Kwiecien R, Pietsch T, Gnekow A, Kramm C, Brooks MD, Jackson E, Piwnica-Worms D, Mitra RD, Rubin JB, Liu XY, Korshunov A, Schwartzentruber J, Jones DTW, Pfaff E, Sturm D, Fontebasso AM, Quang DAK, Albrecht S, Kool M, Dong Z, Siegel P, Von Diemling A, Faury D, Tabori U, Lichter P, Plass C, Majewski J, Pfister SM, Jabado N, Lulla R, Echevarria M, Alden T, DiPatri A, Tomita T, Goldman S, Fangusaro J, Qaddoumi I, Lin T, Merchant TE, Kocak M, Panandiker AP, Armstrong GT, Wetmore C, Gajjar A, Broniscer A, Gielen GH, Muehlen AZ, Kramm C, Pietsch T, Hubert C, Ding Y, Toledo C, Paddison P, Olson J, Nandhabalan M, Bjerke L, Bax D, Carvalho D, Bajrami I, Ashworth A, Lord C, Hargrave D, Reis R, Workman P, Jones C, Little S, Popov S, Jury A, Burford A, Doey L, Al-Sarraj S, Jurgensmeier J, Jones C, Carvalho D, Bjerke L, Bax D, Chen L, Kozarewa I, Baker S, Grundy R, Ashworth A, Lord C, Hargrave D, Reis R, Jones C, Bjerke L, Perryman L, Burford A, Bax D, Jury A, Popov S, Box G, Raynaud F, Hargrave D, Eccles S, Jones C, Viana-Pereira M, Pereira M, Burford A, Jury A, Popov S, Perryman L, Bax D, Forshew T, Tatevossian R, Sheer D, Pimental J, Pires M, Reis R, Jones C, Sarkar C, Jha P, Patrick IRP, Somasundaram K, Pathak P, Sharma MC, Suri V, Suri A, Gerges N, Haque T, Nantel A, Faury D, Jabado N, Lee C, Fotovati A, Triscott J, Chen J, Venugopal C, Singhal A, Dunham C, Kerr J, Verreault M, Yip S, Wakimoto H, Jones C, Jayanthan A, Narendran A, Singh S, Dunn S, Giraud G, Holm S, Gustavsson B, Van Gool S, Kizyma R, Kizyma Z, Dvornyak L, Kotsay B, Epari S, Sharma P, Gurav M, Gupta T, Shetty P, Moiyadi A, Kane S, Jalali R. HIGH GRADE GLIOMAS. Neuro Oncol 2012; 14:i56-i68. [PMCID: PMC3483348 DOI: 10.1093/neuonc/nos102] [Citation(s) in RCA: 2] [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: 08/27/2023] Open
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10
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Verreault M, Strutt D, Masin D, Fink D, Gill R, Bally MB. Development of glioblastoma cell lines expressing red fluorescence for non-invasive live imaging of intracranial tumors. Anticancer Res 2011; 31:2161-71. [PMID: 21737636] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
UNLABELLED Glioblastoma (GBM) cell lines expressing red fluorescent proteins were evaluated as a tool for non-invasive imaging of orthotopic tumors. MATERIALS AND METHODS mKate2- and mCherry-transduced U251MG GBM lines were sorted by flow cytometry. The growth rates and drug sensitivity of the resulting cell lines were compared to those of the parental line. Following orthotopic implantation, mKate2-expressing cells were detected using multispectral imaging. RESULTS Flow cytometry-sorted fluorescent populations exhibiting growth curves that were comparable to those of the parental line were selected. mKate2-expressing cells were inoculated orthotopically and formed tumors which were visualized non-invasively, allowing monitoring of tumor growth over time and the assessment of tumor response to temozolomide drug treatment. CONCLUSION The strategy reported here led to the successful development of GBM models expressing mKate2 or mCherry. The fluorescence signal intensity measured in the brain of live animals correlates with tumor size, thus providing a method to assess tumor progression and response to treatment.
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Affiliation(s)
- M Verreault
- Experimental Therapeutics, British Columbia Cancer Agency, BCCRC, 675, W 10th avenue, Vancouver, BC, V5Z 1L3, Canada.
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11
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Battistini B, Verreault M, Ayach B, Blouin A, Cernacek P, Jeng AY, Wessale J, Opgenorth T, Tsang J. Role of the Endothelin System in Secondary Pulmonary Hypertension Related to Air Embolism: Lessons Learned from Testing Four Classes of Endothelin Blockers in a Rat Model. J Cardiovasc Pharmacol 2004; 44 Suppl 1:S386-9. [PMID: 15838327 DOI: 10.1097/01.fjc.0000166295.18066.f8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A rat model of acute pulmonary air embolism (APAE) was developed. These animals had a higher right ventricular systolic pressure (RVSP) (+ 69% at 15-minute peak, and 21-34% at 30-180 minutes), as well as a reduced mean arterial blood pressure (10-20% at 60-180 minutes), heart rate (20-26% at 60-180 minutes) and PaO2 (9-11% at 30-180 minutes) compared with control rats. The role of the endothelin (ET) system, known to be involved in pulmonary hypertension of various etiologies, was investigated by evaluating the effect of the four classes of ET blockers: ET-converting enzyme inhibitor (ECEi) (CGS 35066), selective endothelin-A receptor antagonist (ETA-Ra) (Atrasentan, ABT-627), endothelin-B receptor antagonist (ETB-Ra) (A-192621) or mixed endothelin-A/endothelin-B receptor antagonist (ETA/B-Ra) (A-182086) in this animal model. All four were effective, to various degrees, at reducing the APAE-induced rise in RVSP. The relative efficacy of those compounds in reducing the acute elevation (15 minutes) of RVSP was ECEi >or= ETA/B-Ra >> ETA-Ra = ETB-Ra. The sustained elevation (30-180 minutes) of RVSP was totally abolished by ECEi and attenuated by other ET blockers with a relative efficacy of ETA-Ra > ETA/B-Ra >or= ETB-Ra. ET receptor antagonists did not affect right ventricular basal tone (control rats) whereas ECEi reduced it by up to 12% after 2 hours. The APAE reduction in mean arterial blood pressure was unaffected by ETARa, was completely normalized by ETB-Ra, but was further reduced by either ETA/B-Ra or ECEi. The basal mean arterial blood pressure in control rats was unaffected by ETA-Ra, was elevated by ETB-Ra, but was depressed by ETA/B-Ra and ECEi. All ET blockers maintained normal oxygen saturation in APAE. These results support a role for ETs in rat APAE, since ET blockers can attenuate the cardiopulmonary deterioration and blood gas exchange. However, modulation of the central hemodynamic profile is more complex and may limit the usefulness of some ET blockers.
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MESH Headings
- Acute Disease
- Animals
- Aspartic Acid Endopeptidases/antagonists & inhibitors
- Aspartic Acid Endopeptidases/metabolism
- Atrasentan
- Benzofurans/pharmacology
- Cardiovascular Agents/pharmacology
- Disease Models, Animal
- Embolism, Air/complications
- Embolism, Air/drug therapy
- Embolism, Air/metabolism
- Embolism, Air/physiopathology
- Endothelin A Receptor Antagonists
- Endothelin B Receptor Antagonists
- Endothelin-Converting Enzymes
- Endothelins/metabolism
- Hemodynamics/drug effects
- Hypertension, Pulmonary/drug therapy
- Hypertension, Pulmonary/etiology
- Hypertension, Pulmonary/metabolism
- Hypertension, Pulmonary/physiopathology
- Male
- Metalloendopeptidases/antagonists & inhibitors
- Metalloendopeptidases/metabolism
- Organophosphonates/pharmacology
- Protease Inhibitors/pharmacology
- Pyrrolidines/pharmacology
- Rats
- Rats, Sprague-Dawley
- Receptor, Endothelin A/metabolism
- Receptor, Endothelin B/metabolism
- Sulfonamides/pharmacology
- Time Factors
- Ventricular Dysfunction, Right/drug therapy
- Ventricular Dysfunction, Right/etiology
- Ventricular Dysfunction, Right/metabolism
- Ventricular Dysfunction, Right/physiopathology
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Affiliation(s)
- B Battistini
- Laval Hospital Research Center, Quebec Heart and Lung Institute, Department of Medicine, Laval University, Ste-Foy, QC, Canada.
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Abstract
Findings are inconsistent regarding whether women's cognitive performance fluctuates across phases of the menstrual cycle, but differences in methodology and the use of reported cycle phase rather than precise hormonal measures may underlie these disparities. Studies in monkeys may help resolve these discrepant findings, since hormonal status can be reliably determined. We tested four young (5-7 years old) female rhesus monkeys daily during one entire menstrual cycle on three cognitive tasks displayed on a computerized touch-screen system: a Matching to Sample task with a 30 s delay (MTS-30s), a Matching to Sample task without delay (MTS-no delay) and the spatial condition of the Delayed Recognition Span Test (spatial-DRST). Blood samples were collected at specific time intervals throughout the cycle and assayed for estradiol and progesterone in order to identify hormonal status. There was a nonsignificant trend for the MTS-30s scores to be better during the follicular and luteal phases, when estradiol levels were low, than during the peri-ovulatory phase, when estradiol levels were at their highest. MTS-no delay performance did not vary as a function of hormonal status. Spatial-DRST scores were significantly better during the follicular and luteal phases than during the peri-ovulatory phase of the cycle. These data in the female rhesus monkey support the hypothesis that spatial memory performance is sensitive to estradiol variations across the menstrual cycle, with better performance associated with low estradiol levels.
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Affiliation(s)
- A Lacreuse
- Division of Neuroscience, Yerkes Regional Primate Research Center, Emory University, Atlanta, GA 30322, USA.
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