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Jeanpierre M, Cognard J, Tusseau M, Riller Q, Bui LC, Berthelet J, Laurent A, Crickx E, Parlato M, Stolzenberg MC, Suarez F, Leverger G, Aladjidi N, Collardeau-Frachon S, Pietrement C, Malphettes M, Froissart A, Bole-Feysot C, Cagnard N, Rodrigues Lima F, Walzer T, Rieux-Laucat F, Belot A, Mathieu AL. Haploinsufficiency in PTPN2 leads to early-onset systemic autoimmunity from Evans syndrome to lupus. J Exp Med 2024; 221:e20232337. [PMID: 39028869 PMCID: PMC11259789 DOI: 10.1084/jem.20232337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 05/17/2024] [Accepted: 06/26/2024] [Indexed: 07/21/2024] Open
Abstract
An exome sequencing strategy employed to identify pathogenic variants in patients with pediatric-onset systemic lupus or Evans syndrome resulted in the discovery of six novel monoallelic mutations in PTPN2. PTPN2 is a phosphatase that acts as an essential negative regulator of the JAK/STAT pathways. All mutations led to a loss of PTPN2 regulatory function as evidenced by in vitro assays and by hyperproliferation of patients' T cells. Furthermore, patients exhibited high serum levels of inflammatory cytokines, mimicking the profile observed in individuals with gain-of-function mutations in STAT factors. Flow cytometry analysis of patients' blood cells revealed typical alterations associated with autoimmunity and all patients presented with autoantibodies. These findings further supported the notion that a loss of function in negative regulators of cytokine pathways can lead to a broad spectrum of autoimmune manifestations and that PTPN2 along with SOCS1 haploinsufficiency constitute a new group of monogenic autoimmune diseases that can benefit from targeted therapy.
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Affiliation(s)
- Marie Jeanpierre
- Laboratory of Immunogenetics of Pediatric Autoimmune Diseases, Imagine Institute, Université Paris Cité, INSERM UMR 1163, Paris, France, IHU-Imagine, Université de Paris, Paris, France
| | - Jade Cognard
- Centre International de Recherche en Infectiologie, Inserm, U1111, CNRS, UMR5308, École Normale Supérieure de Lyon, Lyon, France
| | - Maud Tusseau
- Centre International de Recherche en Infectiologie, Inserm, U1111, CNRS, UMR5308, École Normale Supérieure de Lyon, Lyon, France
- Department of Medical Genetics, Hospices Civils de Lyon, Bron, France
| | - Quentin Riller
- Laboratory of Immunogenetics of Pediatric Autoimmune Diseases, Imagine Institute, Université Paris Cité, INSERM UMR 1163, Paris, France, IHU-Imagine, Université de Paris, Paris, France
| | - Linh-Chi Bui
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France
| | - Jérémy Berthelet
- Université Paris Cité, CNRS, Epigenetics and Cell Fate, Paris, France
| | - Audrey Laurent
- National Referee Centre for Pediatric-Onset Rheumatism and Autoimmune Diseases, Hospices Civils de Lyon, Pediatric Nephrology, Rheumatology, Dermatology Unit, Mother and Children University Hospital; Lyon, France
| | - Etienne Crickx
- Laboratory of Immunogenetics of Pediatric Autoimmune Diseases, Imagine Institute, Université Paris Cité, INSERM UMR 1163, Paris, France, IHU-Imagine, Université de Paris, Paris, France
- Service de Médecine Interne, Centre National de Référence des Cytopénies Auto-immunes de L’adulte, Hôpital Henri Mondor, Fédération Hospitalo-Universitaire TRUE InnovaTive TheRapy for ImmUne disordErs, Assistance Publique Hôpitaux de Paris, Université Paris Est Créteil, Créteil, France
| | - Marianna Parlato
- Laboratory of Immunogenetics of Pediatric Autoimmune Diseases, Imagine Institute, Université Paris Cité, INSERM UMR 1163, Paris, France, IHU-Imagine, Université de Paris, Paris, France
| | - Marie-Claude Stolzenberg
- Laboratory of Immunogenetics of Pediatric Autoimmune Diseases, Imagine Institute, Université Paris Cité, INSERM UMR 1163, Paris, France, IHU-Imagine, Université de Paris, Paris, France
| | - Felipe Suarez
- Department of Adult Hematology, Necker-Enfants Malades University Hospital and Centre de Référence des déficits Immunitaires Héréditaires, Assistance Publique Hôpitaux de Paris, INSERM U1163, Imagine Institute, Université Paris Cité, Paris, France
| | - Guy Leverger
- Sorbonne Université, INSERM, Centre de Recherche Saint-Antoine, UMR_S938, Assistance Publique Hôpitaux de Paris, Groupe Hospitalier Sorbonne Université, Hôpital Armand Trousseau, Paris, France
| | - Nathalie Aladjidi
- Centre de Référence National des Cytopénies Auto-immunes de l’Enfant, Bordeaux, France
- Pediatric Oncology Hemato-Immunology Unit, University Hospital, Plurithématique Centre d’Investigation Clinique, 1401, INSERM, Bordeaux, France
| | - Sophie Collardeau-Frachon
- Institute of Pathology, Hôpital Femme-Mère-Enfant, Hospices Civils de Lyon, Université Claude Bernard Lyon 1, Lyon, France
- Société Française de Foetopathologie Paris, Paris, France
| | - Christine Pietrement
- Centre Hospitalier Universitaire de Reims, Service de Pédiatrie Spécialisée et Généralisée, Université Reims Champagne Ardenne, Reims, France
| | - Marion Malphettes
- Service d’Immunopathologie Clinique, Saint Louis Hospital, Assistance Publique Hôpitaux de Paris, Paris, France
| | - Antoine Froissart
- Service Médecine Interne, Hôpital Intercommunal de Créteil, Créteil, France
| | - Christine Bole-Feysot
- Genomic Platform, INSERM UMR 1163, Imagine Institute, University Paris Cité, Paris, France
| | - Nicolas Cagnard
- Bioinformatic Platform, INSERM UMR 1163, Imagine Institute, University Paris Cité, Paris, France
| | | | - Thierry Walzer
- Centre International de Recherche en Infectiologie, Inserm, U1111, CNRS, UMR5308, École Normale Supérieure de Lyon, Lyon, France
| | - Frédéric Rieux-Laucat
- Laboratory of Immunogenetics of Pediatric Autoimmune Diseases, Imagine Institute, Université Paris Cité, INSERM UMR 1163, Paris, France, IHU-Imagine, Université de Paris, Paris, France
| | - Alexandre Belot
- Centre International de Recherche en Infectiologie, Inserm, U1111, CNRS, UMR5308, École Normale Supérieure de Lyon, Lyon, France
- National Referee Centre for Pediatric-Onset Rheumatism and Autoimmune Diseases, Hospices Civils de Lyon, Pediatric Nephrology, Rheumatology, Dermatology Unit, Mother and Children University Hospital; Lyon, France
| | - Anne-Laure Mathieu
- Centre International de Recherche en Infectiologie, Inserm, U1111, CNRS, UMR5308, École Normale Supérieure de Lyon, Lyon, France
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Bester SM, Linwood R, Kataoka R, Wu WI, Mou TC. Enhancing the apo protein tyrosine phosphatase non-receptor type 2 crystal soaking strategy through inhibitor-accessible binding sites. Acta Crystallogr F Struct Biol Commun 2024; 80:210-219. [PMID: 39177701 PMCID: PMC11376276 DOI: 10.1107/s2053230x24007866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Accepted: 08/09/2024] [Indexed: 08/24/2024] Open
Abstract
Protein tyrosine phosphatase non-receptor type 2 (PTPN2) has recently been recognized as a promising target for cancer immunotherapy. Despite extensive structural and functional studies of other protein tyrosine phosphatases, there is limited structural understanding of PTPN2. Currently, there are only five published PTPN2 structures and none are truly unbound due to the presence of a mutation, an inhibitor or a loop (related to crystal packing) in the active site. In this report, a novel crystal packing is revealed that resulted in a true apo PTPN2 crystal structure with an unbound active site, allowing the active site to be observed in a native apo state for the first time. Key residues related to accommodation in the active site became identifiable upon comparison with previously published PTPN2 structures. Structures of PTPN2 in complex with an established PTPN1 active-site inhibitor and an allosteric inhibitor were achieved through soaking experiments using these apo PTPN2 crystals. The increased structural understanding of apo PTPN2 and the ability to soak in inhibitors will aid the development of future PTPN2 inhibitors.
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Affiliation(s)
| | - Rebecca Linwood
- Pfizer Boulder Research and Development, Boulder, CO 80301, USA
| | - Ryoko Kataoka
- Pfizer Boulder Research and Development, Boulder, CO 80301, USA
| | - Wen I Wu
- Pfizer Boulder Research and Development, Boulder, CO 80301, USA
| | - Tung Chung Mou
- Pfizer Boulder Research and Development, Boulder, CO 80301, USA
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Hu L, Li H, Qin J, Yang D, Liu J, Luo X, Ma J, Luo C, Ye F, Zhou Y, Li J, Wang M. Discovery of PVD-06 as a Subtype-Selective and Efficient PTPN2 Degrader. J Med Chem 2023; 66:15269-15287. [PMID: 37966047 DOI: 10.1021/acs.jmedchem.3c01348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Protein tyrosine phosphatase nonreceptor Type 2 (PTPN2) is an attractive target for cancer immunotherapy. PTPN2 and another subtype of PTP1B are highly similar in structure, but their biological functions are distinct. Therefore, subtype-selective targeting of PTPN2 remains a challenge for researchers. Herein, the development of small molecular PTPN2 degraders based on a thiadiazolidinone dioxide-naphthalene scaffold and a VHL E3 ligase ligand is described, and the PTPN2/PTP1B subtype-selective degradation is achieved for the first time. The linker structure modifications led to the discovery of the subtype-selective PTPN2 degrader PVD-06 (PTPN2/PTP1B selective index > 60-fold), which also exhibits excellent proteome-wide degradation selectivity. PVD-06 induces PTPN2 degradation in a ubiquitination- and proteasome-dependent manner. It efficiently promotes T cell activation and amplifies IFN-γ-mediated B16F10 cell growth inhibition. This study provides a convenient chemical knockdown tool for PTPN2-related research and a paradigm for subtype-selective PTP degradation through nonspecific substrate-mimicking ligands, demonstrating the therapeutic potential of PTPN2 subtype-selective degradation.
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Affiliation(s)
- Linghao Hu
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan Tsuihang New District, Guangdong 528400, China
| | - Huiyun Li
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan Tsuihang New District, Guangdong 528400, China
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, Guizhou China
| | - Junlin Qin
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Dan Yang
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan Tsuihang New District, Guangdong 528400, China
- School of Pharmaceutical Sciences, Southern Medical University, No.1023, South Shatai Road, Baiyun District, Guangzhou 510515, Guangdong, China
| | - Jieming Liu
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan Tsuihang New District, Guangdong 528400, China
| | - Xiaomin Luo
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan Tsuihang New District, Guangdong 528400, China
| | | | - Cheng Luo
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan Tsuihang New District, Guangdong 528400, China
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Fei Ye
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yubo Zhou
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan Tsuihang New District, Guangdong 528400, China
| | - Jia Li
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan Tsuihang New District, Guangdong 528400, China
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, Guizhou China
- School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Mingliang Wang
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan Tsuihang New District, Guangdong 528400, China
- School of Pharmaceutical Sciences, Southern Medical University, No.1023, South Shatai Road, Baiyun District, Guangzhou 510515, Guangdong, China
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4
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Tang XE, Cheng YQ, Tang CK. Protein tyrosine phosphatase non-receptor type 2 as the therapeutic target of atherosclerotic diseases: past, present and future. Front Pharmacol 2023; 14:1219690. [PMID: 37670950 PMCID: PMC10475599 DOI: 10.3389/fphar.2023.1219690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 08/03/2023] [Indexed: 09/07/2023] Open
Abstract
Tyrosine-protein phosphatase non-receptor type 2(PTPN2), an important member of the protein tyrosine phosphatase family, can regulate various signaling pathways and biological processes by dephosphorylating receptor protein tyrosine kinases. Accumulating evidence has demonstrated that PTPN2 is involved in the occurrence and development of atherosclerotic cardiovascular disease. Recently, it has been reported that PTPN2 exerts an anti-atherosclerotic effect by regulating vascular endothelial injury, monocyte proliferation and migration, macrophage polarization, T cell polarization, autophagy, pyroptosis, and insulin resistance. In this review, we summarize the latest findings on the role of PTPN2 in the pathogenesis of atherosclerosis to provide a rationale for better future research and therapeutic interventions.
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Affiliation(s)
- Xiao-Er Tang
- Department of Pathophysiology, Shaoyang University, Shaoyang, Hunan, China
| | - Ya-Qiong Cheng
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, Hunan, China
| | - Chao-Ke Tang
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, Hunan, China
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Hendriks WJAJ, van Cruchten RTP, Pulido R. Hereditable variants of classical protein tyrosine phosphatase genes: Will they prove innocent or guilty? Front Cell Dev Biol 2023; 10:1051311. [PMID: 36755664 PMCID: PMC9900141 DOI: 10.3389/fcell.2022.1051311] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 12/28/2022] [Indexed: 01/24/2023] Open
Abstract
Protein tyrosine phosphatases, together with protein tyrosine kinases, control many molecular signaling steps that control life at cellular and organismal levels. Impairing alterations in the genes encoding the involved proteins is expected to profoundly affect the quality of life-if compatible with life at all. Here, we review the current knowledge on the effects of germline variants that have been reported for genes encoding a subset of the protein tyrosine phosphatase superfamily; that of the thirty seven classical members. The conclusion must be that the newest genome research tools produced an avalanche of data that suggest 'guilt by association' for individual genes to specific disorders. Future research should face the challenge to investigate these accusations thoroughly and convincingly, to reach a mature genotype-phenotype map for this intriguing protein family.
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Affiliation(s)
- Wiljan J. A. J. Hendriks
- Department of Cell Biology, Radboud University Medical Centre, Nijmegen, The Netherlands,*Correspondence: Wiljan J. A. J. Hendriks,
| | | | - Rafael Pulido
- Biomarkers in Cancer Unit, Biocruces Bizkaia Health Research Institute, Barakaldo, Spain,Ikerbasque, Basque Foundation for Science, Bilbao, Spain
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Liu R, Sun Y, Berthelet J, Bui LC, Xu X, Viguier M, Dupret JM, Deshayes F, Rodrigues Lima F. Biochemical, Enzymatic, and Computational Characterization of Recurrent Somatic Mutations of the Human Protein Tyrosine Phosphatase PTP1B in Primary Mediastinal B Cell Lymphoma. Int J Mol Sci 2022; 23:ijms23137060. [PMID: 35806064 PMCID: PMC9266312 DOI: 10.3390/ijms23137060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/23/2022] [Accepted: 06/23/2022] [Indexed: 12/16/2022] Open
Abstract
Human protein tyrosine phosphatase 1B (PTP1B) is a ubiquitous non-receptor tyrosine phosphatase that serves as a major negative regulator of tyrosine phosphorylation cascades of metabolic and oncogenic importance such as the insulin, epidermal growth factor receptor (EGFR), and JAK/STAT pathways. Increasing evidence point to a key role of PTP1B-dependent signaling in cancer. Interestingly, genetic defects in PTP1B have been found in different human malignancies. Notably, recurrent somatic mutations and splice variants of PTP1B were identified in human B cell and Hodgkin lymphomas. In this work, we analyzed the molecular and functional levels of three PTP1B mutations identified in primary mediastinal B cell lymphoma (PMBCL) patients and located in the WPD-loop (V184D), P-loop (R221G), and Q-loop (G259V). Using biochemical, enzymatic, and molecular dynamics approaches, we show that these mutations lead to PTP1B mutants with extremely low intrinsic tyrosine phosphatase activity that display alterations in overall protein stability and in the flexibility of the active site loops of the enzyme. This is in agreement with the key role of the active site loop regions, which are preorganized to interact with the substrate and to enable catalysis. Our study provides molecular and enzymatic evidence for the loss of protein tyrosine phosphatase activity of PTP1B active-site loop mutants identified in human lymphoma.
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Affiliation(s)
- Rongxing Liu
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, F-75013 Paris, France; (R.L.); (L.-C.B.); (M.V.); (J.-M.D.); (F.D.)
| | - Yujie Sun
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266071, China; (Y.S.); (X.X.)
| | - Jérémy Berthelet
- Université Paris Cité, CNRS, Centre d’Epigénétique et Destin Cellulaire, F-75013 Paris, France;
| | - Linh-Chi Bui
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, F-75013 Paris, France; (R.L.); (L.-C.B.); (M.V.); (J.-M.D.); (F.D.)
| | - Ximing Xu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266071, China; (Y.S.); (X.X.)
| | - Mireille Viguier
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, F-75013 Paris, France; (R.L.); (L.-C.B.); (M.V.); (J.-M.D.); (F.D.)
| | - Jean-Marie Dupret
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, F-75013 Paris, France; (R.L.); (L.-C.B.); (M.V.); (J.-M.D.); (F.D.)
| | - Frédérique Deshayes
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, F-75013 Paris, France; (R.L.); (L.-C.B.); (M.V.); (J.-M.D.); (F.D.)
| | - Fernando Rodrigues Lima
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, F-75013 Paris, France; (R.L.); (L.-C.B.); (M.V.); (J.-M.D.); (F.D.)
- Correspondence:
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