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Soudais C, Schaus R, Bachelet C, Minet N, Mouasni S, Garcin C, Souza CL, David P, Cousu C, Asnagli H, Parker A, Palmquist-Gomes P, Sepulveda FE, Storck S, Meilhac SM, Fischer A, Martin E, Latour S. Inactivation of cytidine triphosphate synthase 1 prevents fatal auto-immunity in mice. Nat Commun 2024; 15:1982. [PMID: 38438357 PMCID: PMC10912214 DOI: 10.1038/s41467-024-45805-y] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 01/25/2024] [Indexed: 03/06/2024] Open
Abstract
De novo synthesis of the pyrimidine, cytidine triphosphate (CTP), is crucial for DNA/RNA metabolism and depends on the CTP synthetases, CTPS1 and -2. Partial CTPS1 deficiency in humans has previously been shown to lead to immunodeficiency, with impaired expansion of T and B cells. Here, we examine the effects of conditional and inducible inactivation of Ctps1 and/or Ctps2 on mouse embryonic development and immunity. We report that deletion of Ctps1, but not Ctps2, is embryonic-lethal. Tissue and cells with high proliferation and renewal rates, such as intestinal epithelium, erythroid and thymic lineages, activated B and T lymphocytes, and memory T cells strongly rely on CTPS1 for their maintenance and growth. However, both CTPS1 and CTPS2 are required for T cell proliferation following TCR stimulation. Deletion of Ctps1 in T cells or treatment with a CTPS1 inhibitor rescued Foxp3-deficient mice from fatal systemic autoimmunity and reduced the severity of experimental autoimmune encephalomyelitis. These findings support that CTPS1 may represent a target for immune suppression.
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Affiliation(s)
- Claire Soudais
- Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, Inserm UMR 1163, Institut Imagine, Paris, France.
- Université de Paris Cité, Paris, France.
| | - Romane Schaus
- Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, Inserm UMR 1163, Institut Imagine, Paris, France
| | - Camille Bachelet
- Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, Inserm UMR 1163, Institut Imagine, Paris, France
- Université de Paris Cité, Paris, France
| | - Norbert Minet
- Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, Inserm UMR 1163, Institut Imagine, Paris, France
- Université de Paris Cité, Paris, France
| | - Sara Mouasni
- Laboratory of Molecular Basis of Altered Immune Homeostasis Inserm UMR 1163, Institut Imagine, Paris, France
| | - Cécile Garcin
- Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, Inserm UMR 1163, Institut Imagine, Paris, France
- Université de Paris Cité, Paris, France
| | - Caique Lopes Souza
- Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, Inserm UMR 1163, Institut Imagine, Paris, France
- Université de Paris Cité, Paris, France
| | - Pierre David
- Transgenesis Platform, Laboratoire d'Expérimentation Animale et Transgenèse (LEAT), Institut Imagine-Structure Fédérative de Recherche Necker INSERM US24/CNRS, UMS3633, Paris, France
| | - Clara Cousu
- Université Paris Cité, CNRS UMR 8253, INSERM U1151, Institut Necker Enfants Malades, F-75015, Paris, France
| | - Hélène Asnagli
- Step-Pharma, Technoparc du Pays-de-Gex, Saint-Genis-Pouilly, France
| | - Andrew Parker
- Step-Pharma, Technoparc du Pays-de-Gex, Saint-Genis-Pouilly, France
| | - Paul Palmquist-Gomes
- Université de Paris Cité, Paris, France
- Imagine - Institut Pasteur, Unit of Heart Morphogenesis, INSERM UMR1163, F-75015, Paris, France
| | - Fernando E Sepulveda
- Laboratory of Molecular Basis of Altered Immune Homeostasis Inserm UMR 1163, Institut Imagine, Paris, France
| | - Sébastien Storck
- Université Paris Cité, CNRS UMR 8253, INSERM U1151, Institut Necker Enfants Malades, F-75015, Paris, France
| | - Sigolène M Meilhac
- Université de Paris Cité, Paris, France
- Imagine - Institut Pasteur, Unit of Heart Morphogenesis, INSERM UMR1163, F-75015, Paris, France
| | - Alain Fischer
- Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, Inserm UMR 1163, Institut Imagine, Paris, France
- Collège de France, Paris, France
| | - Emmanuel Martin
- Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, Inserm UMR 1163, Institut Imagine, Paris, France
| | - Sylvain Latour
- Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, Inserm UMR 1163, Institut Imagine, Paris, France.
- Université de Paris Cité, Paris, France.
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2
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Durand R, Bellanger C, Kervoëlen C, Tessoulin B, Dousset C, Menoret E, Asnagli H, Parker A, Beer P, Pellat-Deceunynck C, Chiron D. Selective pharmacologic targeting of CTPS1 shows single-agent activity and synergizes with BCL2 inhibition in aggressive mantle cell lymphoma. Haematologica 2024. [PMID: 38385294 DOI: 10.3324/haematol.2023.284345] [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] [Received: 09/21/2023] [Indexed: 02/23/2024] Open
Abstract
Innovative therapeutic strategies have emerged over the past decade to improve outcomes for most lymphoma patients. Nevertheless, the aggressive presentation seen in high-risk mantle cell lymphoma (MCL) patients remains an unmet medical need. The highly proliferative cells that characterize these tumors depend on nucleotide synthesis to ensure high DNA replication and RNA synthesis. To take advantage of this vulnerability, STP-B, a clinically available small molecule selectively targeting CTP synthase 1 (CTPS1) has been recently developed. CTPS1 is a key enzyme of the pyrimidine synthesis pathway mediated through its unique ability to provide enough CTP in highly proliferating cells. Herein, we demonstrated that CTPS1 was expressed in all MCL cells, and that its high expression was associated with unfavorable outcomes for patients treated with chemotherapy. Using aggressive MCL models characterized by blastoid morphology, TP53 mutation or polyresistance to targeted therapies, we showed that STP-B was highly effective at nanomolar concentrations in vitro and in vivo, irrespective of these high-risk features. Inhibition of CTPS1 rapidly leads to cell cycle arrest in early S-phase accompanied by inhibition of translation, including of the anti-apoptotic protein MCL1. Consequently, CTPS1 inhibition induced synergistic cell death in combination with the selective BCL2 inhibitor venetoclax, both in vitro and in vivo. Overall, our study identified CTPS1 as a promising target for MCL patients and provided a mechanism-based combination with the BCL2 inhibitor venetoclax for the design of future chemotherapy-free treatment regimens to overcome resistance.
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Affiliation(s)
- Romane Durand
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes
| | - Céline Bellanger
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes
| | | | - Benoit Tessoulin
- Nantes Université, CHU de Nantes, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes
| | | | | | | | | | | | | | - David Chiron
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes.
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Pfeiffer C, Grandits AM, Asnagli H, Schneller A, Huber J, Zojer N, Schreder M, Parker AE, Bolomsky A, Beer PA, Ludwig H. CTPS1 is a novel therapeutic target in multiple myeloma which synergizes with inhibition of CHEK1, ATR or WEE1. Leukemia 2024; 38:181-192. [PMID: 37898670 DOI: 10.1038/s41375-023-02071-z] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 09/25/2023] [Accepted: 10/10/2023] [Indexed: 10/30/2023]
Abstract
Targeting nucleotide biosynthesis is a proven strategy for the treatment of cancer but is limited by toxicity, reflecting the fundamental nucleotide requirement of dividing cells. The rate limiting step in de novo pyrimidine synthesis is of interest, being catalyzed by two homologous enzymes, CTP synthase 1 (CTPS1) and CTPS2, that could be differentially targeted. Herein, analyses of publicly available datasets identified an essential role for CTPS1 in multiple myeloma (MM), linking high expression of CTPS1 (but not CTPS2) with advanced disease and poor outcomes. In cellular experiments, CTPS1 knockout induced apoptosis of MM cell lines. Exposure of MM cells to STP-B, a novel and highly selective pharmacological inhibitor of CTPS1, inhibited proliferation, induced S phase arrest and led to cell death by apoptosis. Mechanistically, CTPS1 inhibition by STP-B activated DNA damage response (DDR) pathways and induced double-strand DNA breaks which accumulated in early S phase. Combination of STP-B with pharmacological inhibitors of key components of the DDR pathway (ATR, CHEK1 or WEE1) resulted in synergistic growth inhibition and early apoptosis. Taken together, these findings identify CTPS1 as a promising new target in MM, either alone or in combination with DDR pathway inhibition.
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Affiliation(s)
- Christina Pfeiffer
- Department of Medicine I, Klinik Ottakring, Wilhelminen Cancer Research Institute, Vienna, Austria
| | - Alexander M Grandits
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | | | - Anja Schneller
- Department of Medicine I, Klinik Ottakring, Wilhelminen Cancer Research Institute, Vienna, Austria
| | - Julia Huber
- Department of Medicine I, Klinik Ottakring, Wilhelminen Cancer Research Institute, Vienna, Austria
| | - Niklas Zojer
- Department of Medicine I, Klinik Ottakring, Wilhelminen Cancer Research Institute, Vienna, Austria
- Department of Medicine I, Center for Oncology and Hematology, Klinik Ottakring, Vienna, Austria
| | - Martin Schreder
- Department of Medicine I, Center for Oncology and Hematology, Klinik Ottakring, Vienna, Austria
| | | | - Arnold Bolomsky
- Department of Medicine I, Klinik Ottakring, Wilhelminen Cancer Research Institute, Vienna, Austria
| | | | - Heinz Ludwig
- Department of Medicine I, Klinik Ottakring, Wilhelminen Cancer Research Institute, Vienna, Austria.
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Minet N, Boschat AC, Lane R, Laughton D, Beer P, Asnagli H, Soudais C, Bourne T, Fischer A, Martin E, Latour S. Differential roles of CTP synthetases CTPS1 and CTPS2 in cell proliferation. Life Sci Alliance 2023; 6:e202302066. [PMID: 37348953 PMCID: PMC10288033 DOI: 10.26508/lsa.202302066] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 06/24/2023] Open
Abstract
The CTP nucleotide is a key precursor of nucleic acids metabolism essential for DNA replication. De novo CTP production relies on CTP synthetases 1 and 2 (CTPS1 and CTPS2) that catalyze the conversion of UTP into CTP. CTP synthetase activity is high in proliferating cells including cancer cells; however, the respective roles of CTPS1 and CTPS2 in cell proliferation are not known. By inactivation of CTPS1 and/or CTPS2 and complementation experiments, we showed that both CTPS1 and CTPS2 are differentially required for cell proliferation. CTPS1 was more efficient in promoting proliferation than CTPS2, in association with a higher intrinsic enzymatic activity that was more resistant to inhibition by 3-deaza-uridine, an UTP analog. The contribution of CTPS2 to cell proliferation was modest when CTPS1 was expressed but essential in absence of CTPS1. Public databases analysis of more than 1,000 inactivated cancer cell lines for CTPS1 or CTPS2 confirmed that cell growth is highly dependent of CTPS1 but less or not of CTPS2. Therefore, our results demonstrate that CTPS1 is the main contributor to cell proliferation.
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Affiliation(s)
- Norbert Minet
- Laboratory of Lymphocyte Activation and Susceptibility to EBV Infection, Inserm UMR 1163, Imagine Institute, Paris, France
- Université de Paris, Paris, France
| | - Anne-Claire Boschat
- Université de Paris, Paris, France
- Plateforme Spectrométrie de masse, Institut Imagine, Paris, France
- Laboratoire de Biochimie Métabolomique et Protéomique, Hôpital Necker Enfants-Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | | | | | | | | | - Claire Soudais
- Laboratory of Lymphocyte Activation and Susceptibility to EBV Infection, Inserm UMR 1163, Imagine Institute, Paris, France
- Université de Paris, Paris, France
| | - Tim Bourne
- Step-Pharma, Saint-Genis-Pouilly, France
| | - Alain Fischer
- Collège de France, Paris, France
- Imagine Institute, Paris, France
| | - Emmanuel Martin
- Laboratory of Lymphocyte Activation and Susceptibility to EBV Infection, Inserm UMR 1163, Imagine Institute, Paris, France
- Université de Paris, Paris, France
| | - Sylvain Latour
- Laboratory of Lymphocyte Activation and Susceptibility to EBV Infection, Inserm UMR 1163, Imagine Institute, Paris, France
- Université de Paris, Paris, France
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Asnagli H, Minet N, Pfeiffer C, Hoeben E, Lane R, Laughton D, Birch L, Jones G, Novak A, Parker AE, Ludwig H, Fischer A, Latour S, Beer PA. CTP Synthase 1 Is a Novel Therapeutic Target in Lymphoma. Hemasphere 2023; 7:e864. [PMID: 37008165 PMCID: PMC10060080 DOI: 10.1097/hs9.0000000000000864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 02/08/2023] [Indexed: 03/29/2023] Open
Abstract
Lymphoma is the most common hematological malignancy and is among the 10 most prevalent cancers worldwide. Although survival has been improved by modern immunochemotherapeutic regimens, there remains a significant need for novel targeted agents to treat both B-cell and T-cell malignancies. Cytidine triphosphate synthase 1 (CTPS1), which catalyzes the rate-limiting step in pyrimidine synthesis, plays an essential and nonredundant role in B-cell and T-cell proliferation but is complemented by the homologous CTPS2 isoform outside the hemopoietic system. This report describes the identification and characterization of CTPS1 as a novel target in B- and T-cell cancers. A series of small molecules have been developed which show potent and highly selective inhibition of CTPS1. Site-directed mutagenesis studies identified the adenosine triphosphate pocket of CTPS1 as the binding site for this small molecule series. In preclinical studies, a potent and highly selective small molecule inhibitor of CTPS1 blocked the in vitro proliferation of human neoplastic cells, showing the highest potency against lymphoid neoplasms. Importantly, pharmacological CTPS1 inhibition induced cell death by apoptosis in the majority of lymphoid cell lines tested, thus demonstrating a cytotoxic mechanism of action. Selective CTPS1 inhibition also inhibited the growth of neoplastic human B- and T- cells in vivo. These findings identify CTPS1 as a novel therapeutic target in lymphoid malignancy. A compound from this series is in phase 1/2 clinical studies for the treatment of relapsed/refractory B- and T-cell lymphoma (NCT05463263).
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Novak A, Laughton D, Lane R, Blackham E, Thomas J, Chatzopoulou E, Wrigglesworth J, Quddus A, Ahmed S, Cousin D, Duffy L, Dubois N, Unitt J, Orban K, Browne E, Ward M, Mycock D, Ieva M, Bland N, George P, Bourne T, Asnagli H, Birch L, Jones G. Discovery and Optimization of Potent and Orally Available CTP Synthetase Inhibitors for Use in Treatment of Diseases Driven by Aberrant Immune Cell Proliferation. J Med Chem 2022; 65:16640-16650. [PMID: 36449304 DOI: 10.1021/acs.jmedchem.2c01446] [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: 12/05/2022]
Abstract
Herein, we report the discovery of a first-in-class chemotype 2-(alkylsulfonamido)thiazol-4-yl)acetamides that act as pan-selective inhibitors of cytidine 5'-triphosphate synthetase (CTPS1/2), critical enzymes in the de novo pyrimidine synthesis pathway. Weak inhibitors identified from a high-throughput screening of 240K compounds have been optimized to a potent, orally active agent, compound 27, which has shown significant pharmacological responses at 10 mg/kg dose BID in a well-established animal model of inflammation.
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Affiliation(s)
- Andrew Novak
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - David Laughton
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Rebecca Lane
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Emma Blackham
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Jennifer Thomas
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Elli Chatzopoulou
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | | | - Abdul Quddus
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Saleh Ahmed
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - David Cousin
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Lorna Duffy
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Nathalie Dubois
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - John Unitt
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Katalin Orban
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Edward Browne
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Michelle Ward
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - David Mycock
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Maria Ieva
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Nicholas Bland
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Pascal George
- Step Pharma, 15 Rue Louis et Auguste Lumière, Saint Genis-Pouilly01 630, France
| | - Timothy Bourne
- Step Pharma, 15 Rue Louis et Auguste Lumière, Saint Genis-Pouilly01 630, France
| | - Hélène Asnagli
- Step Pharma, 15 Rue Louis et Auguste Lumière, Saint Genis-Pouilly01 630, France
| | - Louise Birch
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
| | - Geraint Jones
- Sygnature Discovery, BioCity, Pennyfoot Street, NottinghamNG1 1GF, U.K
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Asnagli H, Novak A, Birch L, Lane R, Minet N, Laughton D, George P, De Ribains G, Latour S, Fischer A, Bourne T, Parker A. OP0034 STP938, A NOVEL, POTENT AND SELECTIVE INHIBITOR OF CTP SYNTHASE 1 (CTPS1) DEMONSTRATES EFFICACY IN RODENT MODELS OF INFLAMMATION AND ARTHRITIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:The final rate-limiting step in pyrimidine synthesis is the conversion of UTP to CTP which is catalyzed by cytidine triphosphate synthase 1 (CTPS1) or CTPS2. A hypomorphic mutation in the CTPS1 gene has highlighted the essential and non-redundant role of CTPS1 in T and B lymphocyte proliferation1. These patients exhibit no effects on non-hematopoietic tissues. Thus, selective inhibition of CTPS1 represents a novel targeted approach to dampen pathological T- and B-cell lympho-proliferation. STP938 is an orally bioavailable, small molecular weight, selective inhibitor of CTPS1 developed by Step Pharma.Objectives:To demonstrate the in vitro effects of CTPS1 inhibition on T and B cell proliferation and the therapeutic potential of STP938 using in vivo models of disease.Methods:The in vitro anti-proliferative activity of STP938 was investigated using cell lines and primary human PBMCs. STP938 was assessed in vivo using the DTH-KLH rat model and the mouse collagen-induced arthritis (CIA) model. For the KLH-DTH model, Lewis rats were immunized with KLH, a week later, challenged locally at the ear with KLH antigen, ear swelling was assessed after 24 hours. Blood samples were collected for detection of KLH-specific IgG levels at day 8. STP938 was given orally one-hour prior to immunization and then b.i.d. for 7 days. For the CIA model, DBA-1 mice were immunized with Collagen type II and complete Freund’s adjuvant and received a booster immunization three weeks later. STP938 was administered to mice developing signs of arthritis from Day 28 to 45 orally daily b.i.d.Results:STP938 inhibited in vitro proliferation of HEKwt but not HEK-CTPS1KO cells as well as Jurkat and human PBMCs. STP938 demonstrated a significant and dose-dependent inhibition of KLH-specific T and B cell responses in vivo. STP938 significantly reduced the disease severity in the CIA model in a dose-dependent manner as determined by clinical and histopathological readouts.Conclusion:Our preliminary in vitro and in vivo results indicate that inhibition of CTPS1 specifically blocks proliferation of cells derived from the lymphocyte lineage and reduces the T cell driven inflammatory response. These data highlight the therapeutical potential of STP938 in treating patients with autoimmune diseases such as rheumatoid arthritis.References:[1]Martin et al, JCI Insight. 2020, 12;5(5):133880Disclosure of Interests:Hélène ASNAGLI Employee of: Step Pharma, Andrew Novak: None declared, Louise Birch Shareholder of: Step Pharma, Rebecca Lane: None declared, Norbert Minet Employee of: employee as Ph D student under CIFRE grant, David Laughton: None declared, Pascal George Shareholder of: Step Pharma, Geoffroy de Ribains Shareholder of: as former employee of Step Pharma, Employee of: former employee of Step Pharma, Sylvain Latour: None declared, Alain Fischer: None declared, Tim Bourne Shareholder of: UCB, Step Pharma, Sitryx Therapeutics, Consultant of: a range of biotech companies, Employee of: former employee of Step Pharma and Sitryx Therapeutics, Andrew Parker Employee of: Step Pharma
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Foussat A, Gregoire S, Clerget-Chossat N, Terrada C, Asnagli H, Lemoine FM, Klatzmann D, LeHoang P, Forte M, Bodaghi B. Regulatory T Cell Therapy for Uveitis: A New Promising Challenge. J Ocul Pharmacol Ther 2017; 33:278-284. [DOI: 10.1089/jop.2016.0165] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Affiliation(s)
| | - Sylvie Gregoire
- Centre d'Immunologie et des Maladies Infectieuses (CIMI), Sorbonne Universités, Paris, France
| | | | - Celine Terrada
- Centre d'Immunologie et des Maladies Infectieuses (CIMI), Sorbonne Universités, Paris, France
- Department of Ophthalmology, DHU ViewMaintain, Pitié-Salpêtrière Hospital, Paris, France
| | | | - François M. Lemoine
- Centre d'Immunologie et des Maladies Infectieuses (CIMI), Sorbonne Universités, Paris, France
| | - David Klatzmann
- Laboratoire de Biologie et Thérapeutique des Pathologies Immunitaires, UMR 7211 UPMC/CNRS, U972 INSERM, Paris, France
| | - Phuc LeHoang
- Department of Ophthalmology, DHU ViewMaintain, Pitié-Salpêtrière Hospital, Paris, France
- Laboratoire de Biologie et Thérapeutique des Pathologies Immunitaires, UMR 7211 UPMC/CNRS, U972 INSERM, Paris, France
| | | | - Bahram Bodaghi
- Department of Ophthalmology, DHU ViewMaintain, Pitié-Salpêtrière Hospital, Paris, France
- Laboratoire de Biologie et Thérapeutique des Pathologies Immunitaires, UMR 7211 UPMC/CNRS, U972 INSERM, Paris, France
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Asnagli H, Jacquin M, Belmonte N, Gertner-Dardenne J, Hubert MF, Sales A, Fall PB, Ginet C, Marchetti I, Ménard F, Lara G, Bobak N, Foussat A. Inhibition of Noninfectious Uveitis Using Intravenous Administration of Collagen II-Specific Type 1 Regulatory T Cells. Invest Ophthalmol Vis Sci 2016; 56:6456-66. [PMID: 26447979 DOI: 10.1167/iovs.15-16883] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE To evaluate the therapeutic potential of Col-Treg, a collagen II-specific type 1 regulatory T-cell immunotherapy for the treatment of noninfectious uveitis (NIU). METHODS Col-Treg cells were produced from collagen II-specific T cell receptor (TCR) transgenic mice or peripheral blood of healthy donors. Phenotypic characterization was performed by flow cytometry, and cytokine secretion was evaluated with Flowcytomix or ELISA. In vitro functional characterization included ATP hydrolysis, cytotoxicity, and contact-independent T-cell suppression and plasticity assays. Col-Treg migration was assessed by quantitative PCR specific to Col-Treg TCR. Col-Treg cells were administered intravenously in mice displaying experimental autoimmune uveitis (EAU) induced by interphotoreceptor retinoid-binding protein (IRBP) immunizations. Efficacy of Col-Treg was assessed by ophthalmology, histology, and immunohistochemistry. RESULTS Mice Col-Treg cells displayed identity features of type 1 Treg cells with expression of CD25, FoxP3, low surface expression of CD127, and cytokine secretion profile (IL-10(high), IL-4(low), IFN-γ(int)). In vitro functional assays demonstrated Col-Treg suppressive capacity via soluble factor-dependent immunosuppression, cytotoxicity, and ATP hydrolysis. Col-Treg cells expressed granzyme B, CD39, and glucocorticoid-induced TNF-related protein (GITR). Administration of Col-Treg in EAU mice inhibited clinical and morphologic signs of uveitis and decreased ocular leukocyte infiltration. Col-Treg cells homed in the ocular tissues 24 hours after intravenous injection. Human Col-Treg cells were comparable to mice Col-Treg cells in identity and function and did not show the capacity to differentiate into Th17 cells in vitro. CONCLUSIONS These results demonstrate the therapeutic potential of Col-Treg cells as a targeted approach for the treatment of NIU and the feasibility of translating this approach to the human clinical setting.
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Asnagli H, Jacquin M, Belmonte N, Gertner-Dardenne J, Hubert M, Sales A, Foussat A. Treg-based immunotherapy of non-infectious uveitis (NIU). Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- H. Asnagli
- Preclinical Pharmacology and Safety; TxCell; Valbonne France
| | - M. Jacquin
- Preclinical Pharmacology and Safety; TxCell; Valbonne France
| | | | | | | | - A. Sales
- Histopathology; Vetopath; Antibes France
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Asnagli H, Martire D, Belmonte N, Quentin J, Bastian H, Boucard-Jourdin M, Fall PB, Mausset-Bonnefont AL, Mantello-Moreau A, Rouquier S, Marchetti I, Jorgensen C, Foussat A, Louis-Plence P. Type 1 regulatory T cells specific for collagen type II as an efficient cell-based therapy in arthritis. Arthritis Res Ther 2014; 16:R115. [PMID: 24886976 PMCID: PMC4075412 DOI: 10.1186/ar4567] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 05/12/2014] [Indexed: 02/07/2023] Open
Abstract
Introduction Regulatory T (Treg) cells play a crucial role in preventing autoimmune diseases and are an ideal target for the development of therapies designed to suppress inflammation in an antigen-specific manner. Type 1 regulatory T (Tr1) cells are defined by their capacity to produce high levels of interleukin 10 (IL-10), which contributes to their ability to suppress pathological immune responses in several settings. The aim of this study was to evaluate the therapeutic potential of collagen type II–specific Tr1 (Col-Treg) cells in two models of rheumatoid arthritis (RA) in mice. Methods Col-Treg clones were isolated and expanded from collagen-specific TCR transgenic mice. Their cytokine secretion profile and phenotype characterization were studied. The therapeutic potential of Col-Treg cells was evaluated after adoptive transfer in collagen-antibody– and collagen-induced arthritis models. The in vivo suppressive mechanism of Col-Treg clones on effector T-cell proliferation was also investigated. Results Col-Treg clones are characterized by their specific cytokine profile (IL-10highIL-4negIFN-γint) and mediate contact-independent immune suppression. They also share with natural Tregs high expression of GITR, CD39 and granzyme B. A single infusion of Col-Treg cells reduced the incidence and clinical symptoms of arthritis in both preventive and curative settings, with a significant impact on collagen type II antibodies. Importantly, injection of antigen-specific Tr1 cells decreased the proliferation of antigen-specific effector T cells in vivo significantly. Conclusions Our results demonstrate the therapeutic potential of Col-Treg cells in two models of RA, providing evidence that Col-Treg could be an efficient cell-based therapy for RA patients whose disease is refractory to current treatments.
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Clerget-Chossat N, Asnagli H, Plence P, Brun V, Belmonte N, Forte M, Jorgensen C, Foussat A. Development of Col-Treg, an antigen specific Treg based immune-cellular therapy for joint and eye inflammatory diseases. Cytotherapy 2014. [DOI: 10.1016/j.jcyt.2014.01.075] [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: 11/25/2022]
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Quentin J, Martire D, Mausset-Bonnefont AL, Asnagli H, Belmonte N, Foussat A, Jorgensen C, Vincente R, Louis-Plence P. A3.6 Comparative Analysis of the Therapeutic Potential of Inducible Treg Cell PopulAtions in Experimental Model of Arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-203216.6] [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: 11/04/2022]
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Martire D, Quentin J, Mausset-Bonnefont AL, Asnagli H, Belmonte N, Foussat A, Jorgensen C, Louis-Plence P. Inducible Treg cell populations as cell based-therapy for rheumatoid arthritis. Lab Invest 2012. [PMCID: PMC3508944 DOI: 10.1186/1479-5876-10-s3-p55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Martire D, Quentin J, Mausset-Bonnefont AL, Asnagli H, Belmonte N, Foussat A, Jorgensen C, Louis-Plence P. Comparative analysis of the therapeutic potential of two inducible Treg cell populations in experimental model of arthritis. Ann Rheum Dis 2012. [DOI: 10.1136/annrheumdis-2011-201234.9] [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: 11/03/2022]
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Martire D, Quentin J, Mausset-Bonnefont AL, Asnagli H, Belmonte N, Foussat A, Jorgensen C, Louis-Plence P. Injection of antigen-specific regulatory Tr1 lymphocytes protects mice from severe collagen-induced arthritis. Ann Rheum Dis 2011. [DOI: 10.1136/ard.2010.149013.4] [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: 11/04/2022]
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Martire D, Bonnefont AL, Asnagli H, Belmonte N, Jourdin-Boucard M, Rouquier S, Mantello A, Fall PB, Foussat A, Jorgensen C, Louis-Plence P. Single injection of antigen-specific regulatory Tr1 lymphocytes protects mice from severe collagen-induced arthritis. Ann Rheum Dis 2010. [DOI: 10.1136/ard.2010.129668p] [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: 11/04/2022]
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Asnagli H, Afkarian M, Murphy KM. Cutting edge: Identification of an alternative GATA-3 promoter directing tissue-specific gene expression in mouse and human. J Immunol 2002; 168:4268-71. [PMID: 11970965 DOI: 10.4049/jimmunol.168.9.4268] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The GATA family of transcription factors regulates development of multiple tissues. Several GATA factors have two promoters directing distinct tissue-specific expression. Although GATA-3 acts in both neuronal and thymocyte development, no alternative promoter usage has been reported. We examined various cell types and tissues for potential alternative GATA-3 transcripts and identified an alternative transcript directed by a promoter located 10 kb upstream of the recognized promoter. Sequences within this promoter and alternative first exon are highly conserved between mouse and human genomes. This new promoter is expressed selectively in the brain but is essentially undetectable in the thymus. In contrast, the recognized promoter is selectively expressed in the thymus but not in the brain. We also observed a gradual increase in expression from this new promoter during Th2 development. These results indicate that similar to other GATA factors, the GATA-3 gene can be controlled by two promoters that may direct lineage- and tissue-specific expression.
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Affiliation(s)
- Hélène Asnagli
- Department of Pathology and Immunology, Howard Hughes Medical Institute, Washington University School of Medicine, St. Louis, MO 63110, USA
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Abstract
Specialized effector activities that are required to eliminate various pathogens involve cytokines produced by specialized CD4(+) T cells subsets, dogmatically termed Th1 and Th2 cells. Despite some oversimplifications, this paradigm is useful for organizing the complex pathways that control forward and backward movements along the road of T cell differentiation. Effective immune memory relies, in part, on the maintenance of the T helper phenotype. This review will address basic issues that relate to the maintenance or reversibility of Th1/Th2 states within the CD4(+) T cell lineage.
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Affiliation(s)
- H Asnagli
- Department of Pathology and Immunology, Howard Hughes Medical Institute, Washington University School of Medicine, 660 South Euclid Avenue, Box 8118, St. Louis, MO 63110, USA
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Abstract
The recognition of polarized T cell subsets defined by cytokine production was followed by a search to define the factors controlling this phenomenon. Suitable in vitro systems allowed the development of cytokine "recipes" that induced rapid polarization of naïve T cells into Th1 or Th2 populations. The next phase of work over the past several years has begun to define the intracellular processes set into motion during Th1/Th2 development, particularly by the strongly polarizing cytokines IL-12 and IL-4. Although somewhat incomplete, what has emerged is a richly detailed tapestry of signaling and transcription, controlling an important T cell developmental switch. In addition several new mediators of control have emerged, including IL-18, the intriguing Th2-selective T1/ST2 product, and heterogeneity in dendritic cells capable of directing cytokine-independent Th development.
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Affiliation(s)
- K M Murphy
- Department of Pathology, and Howard Hughes Medical Institute, Washington University School of Medicine, St. Louis, MO 63110, USA.
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Auphan N, Simon AK, Asnagli H, Phillips RJ, Rincon M, Ghosh S, Flavell RA, Schmitt-Verhulst AM. Consequences of intrathymic TCR engagement by partial agonist on selection events and peripheral T cell activation program. J Immunol 1998; 160:4810-21. [PMID: 9590228] [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] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Functions elicited from mature T cells depend on the nature of the Ag. Thus, an agonist induces a larger set of cytokine responses than a partial agonist. Additionally, Ags present in the thymus influence both the selection of TCRs generated by gene rearrangement and the potential functional program of developing thymocytes. This can be approached by analysing the development of T cells in mice expressing the same transgenic TCR (tgTCR) under different conditions of intrathymic selection. H-2Kbm8 was found to act as a partial agonist for CD8+ T cells expressing a tgTCR specific for the H-2Kb alloantigen. Intrathymic exposure to full or to partial agonist affected the development of thymocytes at different stages, consistent with the respective CD8-independent and -dependent characteristic of the tgTCR/Ag interaction. The presence of the partial agonist led to the accumulation of a major population of thymocytes (tgTCR(high) CD4- CD8(low)) originating from TCR engagement at the immature single-positive CD8(low) stage as evidenced by: 1) results from reaggregated thymic organ culture in the presence of H-2(k/bm8) thymic stromal cells; 2) the absence of CD4+ thymocytes, the development of which depends on rearrangements of endogenous TCR alpha genes; and 3) the identification of the CD8(low) thymocytes as cycling cells. Peripheral CD8(low) T cells selected in an H-2(k/bm8) thymus expressed a partial functional program in response to H-2Kb, akin to the response of CD8(high) T cells to a partial agonist. The analysis of the molecular bases for partial reactivity revealed a correlation with inefficient AP-1, but efficient NF-kappaB transactivation.
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Affiliation(s)
- N Auphan
- Centre d'Immunologie de l'Institut National de la Santé et de la Recherche Médicale et du Centre National de la Recherche Scientifique, de Marseille-Luminy, Marseille, France.
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Asnagli H, Schmitt-Verhulst AM, Guimezanes A. Class I- and class II-reactive TCRs coexpressed on CD4+ T cells both trigger CD4/CD8-shared and CD4-unique functions. The Journal of Immunology 1997. [DOI: 10.4049/jimmunol.158.10.4533] [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] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
CD4+ and CD8+ T cells emerge from thymic selection expressing a TCR restricted by MHC class II (TCRII) and MHC class I (TCRI), and upon Ag stimulation develop respectively into Th and CTL effector cells. The influence of thymic differentiation and antigenic stimulation on the determination of T cell functions was studied, with CD4+ T cells expressing a transgenic TCRI that reacts with the class I alloantigen H-2K(b) in a CD8-independent fashion. Such T cells additionally express a TCR, probably TCRII, in which the transgenic TCR beta-chain is associated with endogenously rearranged TCR alpha-chains. Upon in vitro stimulation with H-2K(b)-expressing cells, both CD8+ and CD4+ transgenic TCR+ T cells developed into CTL capable of killing Ag-expressing target cells through a perforin-dependent mechanism, and secreted IL-2 and IFN-gamma. Fas ligand-dependent killing could also be induced in both CD8+ and CD4+ in vitro stimulated T cells. The capacity to secrete IL-4 was restricted to the CD4+ T cells, however, suggesting that both CD8/CD4-shared and CD4-unique programs can be elicited by stimulation of CD4 T cells through a TCRI. Acquisition of CTL function was also induced upon class II alloantigen stimulation through the endogenously rearranged TCRII, which represents a polyclonal set of TCRs. IL-2, IFN-gamma, and after restimulation, IL-4, were also produced. Thus: 1) events associated with intrathymic selection influence the gene program activated in response to the same TCRI/APC interaction; and 2) CD4+ T cells expressing a TCRI and a TCRII can activate the same gene program after engagement of either one of these TCRs.
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Affiliation(s)
- H Asnagli
- Center for Immunology, INSERM-CNRS of Marseille-Luminy, France
| | | | - A Guimezanes
- Center for Immunology, INSERM-CNRS of Marseille-Luminy, France
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Asnagli H, Schmitt-Verhulst AM, Guimezanes A. Class I- and class II-reactive TCRs coexpressed on CD4+ T cells both trigger CD4/CD8-shared and CD4-unique functions. J Immunol 1997; 158:4533-42. [PMID: 9144464] [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] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
CD4+ and CD8+ T cells emerge from thymic selection expressing a TCR restricted by MHC class II (TCRII) and MHC class I (TCRI), and upon Ag stimulation develop respectively into Th and CTL effector cells. The influence of thymic differentiation and antigenic stimulation on the determination of T cell functions was studied, with CD4+ T cells expressing a transgenic TCRI that reacts with the class I alloantigen H-2K(b) in a CD8-independent fashion. Such T cells additionally express a TCR, probably TCRII, in which the transgenic TCR beta-chain is associated with endogenously rearranged TCR alpha-chains. Upon in vitro stimulation with H-2K(b)-expressing cells, both CD8+ and CD4+ transgenic TCR+ T cells developed into CTL capable of killing Ag-expressing target cells through a perforin-dependent mechanism, and secreted IL-2 and IFN-gamma. Fas ligand-dependent killing could also be induced in both CD8+ and CD4+ in vitro stimulated T cells. The capacity to secrete IL-4 was restricted to the CD4+ T cells, however, suggesting that both CD8/CD4-shared and CD4-unique programs can be elicited by stimulation of CD4 T cells through a TCRI. Acquisition of CTL function was also induced upon class II alloantigen stimulation through the endogenously rearranged TCRII, which represents a polyclonal set of TCRs. IL-2, IFN-gamma, and after restimulation, IL-4, were also produced. Thus: 1) events associated with intrathymic selection influence the gene program activated in response to the same TCRI/APC interaction; and 2) CD4+ T cells expressing a TCRI and a TCRII can activate the same gene program after engagement of either one of these TCRs.
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Affiliation(s)
- H Asnagli
- Center for Immunology, INSERM-CNRS of Marseille-Luminy, France
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