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Mauro FR, Frustaci AM, Visentin A, Vitale C, Bartoletti M, Oltolini C, Zappulo E, Mikulska M. Severe infections in patients with chronic lymphocytic leukemia included in trials investigating BTK and BCL2 inhibitors. Crit Rev Oncol Hematol 2024; 201:104408. [PMID: 38880368 DOI: 10.1016/j.critrevonc.2024.104408] [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: 02/28/2024] [Revised: 04/30/2024] [Accepted: 06/04/2024] [Indexed: 06/18/2024] Open
Abstract
Bruton tyrosine kinase inhibitors (BTKi) and the BCL-2 inhibitor venetoclax have significantly improved the prognosis of patients with chronic lymphocytic leukemia (CLL). However, the incidence of severe infections in patients receiving these agents needs to be better understood. Our review aimed to provide an overview of grade ≥3 infections in patients with CLL who received BTKi and venetoclax-based therapy in prospective trials. Infection rates were influenced by the age of patients and the duration of follow-up. For treatment-naive (TN) patients receiving BTKi, infection rates ranged between 11.4 % and 27.4 % and were close to 30 % in relapsed/refractory (R/R) patients. TN and R/R patients receiving fixed-duration venetoclax-based treatments showed variable rates, with maximum values around 20 %. Opportunistic and fatal infections were uncommon. In conclusion, infections remain a concern in patients with CLL receiving targeted agents. A better definition of factors increasing infection vulnerability could help identify those patients who require infection prophylaxis.
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Affiliation(s)
- Francesca R Mauro
- Hematology, Department of Translational and Precision Medicine, Sapienza University, Rome, Italy.
| | | | - Andrea Visentin
- Hematology and Clinical Immunology Unit, Department of Medicine, University of Padua, Italy
| | - Candida Vitale
- Division of Hematology, A.O.U. Città della Salute e della Scienza di Torino, Italy; Department of Molecular Biotechnology and Health Sciences, University of Turin, Italy
| | - Michele Bartoletti
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele Milan 20090, Italy; Infectious Disease Unit, IRCCS Humanitas Research Hospital, Via Manzoni 56, Rozzano, Milan 20089, Italy
| | - Chiara Oltolini
- Clinic of Infectious Diseases, Vita-Salute University, San Raffaele Scientific Institute, Milan, Italy
| | - Emanuela Zappulo
- Department of Clinical Medicine and Surgery University of Naples Federico II, Napoli, Italy
| | - Malgorzata Mikulska
- Department of Health Sciences (DISSAL) University of Genoa, Italy; Infectious Diseases Unit IRCCS Ospedale Policlinico San Martino Genoa, Italy
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Boyle AJ, Lindberg A, Tong J, Zhai D, Liu F, Vasdev N. Preliminary PET imaging of [ 11C]evobrutinib in mouse models of colorectal cancer, SARS-CoV-2, and lung damage: Radiosynthesis via base-aided palladium-NiXantphos-mediated 11C-carbonylation. J Labelled Comp Radiopharm 2024; 67:235-244. [PMID: 37691152 DOI: 10.1002/jlcr.4062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/25/2023] [Accepted: 08/24/2023] [Indexed: 09/12/2023]
Abstract
Evobrutinib is a second-generation, highly selective, irreversible Bruton's tyrosine kinase (BTK) inhibitor that has shown efficacy in the autoimmune diseases arthritis and multiple sclerosis. Its development as a positron emission tomography (PET) radiotracer has potential for in vivo imaging of BTK in various disease models including several cancers, severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2), and lipopolysaccharide (LPS)-induced lung damage. Herein, we report the automated radiosynthesis of [11C]evobrutinib using a base-aided palladium-NiXantphos-mediated 11C-carbonylation reaction. [11C]Evobrutinib was reliably formulated in radiochemical yields of 5.5 ± 1.5% and a molar activity of 34.5 ± 17.3 GBq/μmol (n = 12) with 99% radiochemical purity. Ex vivo autoradiography studies showed high specific binding of [11C]evobrutinib in HT-29 colorectal cancer mouse xenograft tissues (51.1 ± 7.1%). However, in vivo PET/computed tomography (CT) imaging with [11C]evobrutinib showed minimal visualization of HT-29 colorectal cancer xenografts and only a slight increase in radioactivity accumulation in the associated time-activity curves. In preliminary PET/CT studies, [11C]evobrutinib failed to visualize either SARS-CoV-2 pseudovirus infection or LPS-induced injury in mouse models. In conclusion, [11C]evobrutinib was successfully synthesized by 11C-carbonylation and based on our preliminary studies does not appear to be a promising BTK-targeted PET radiotracer in the rodent disease models studied herein.
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Affiliation(s)
- Amanda J Boyle
- Azrieli Centre for Neuro-Radiochemistry, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Campbell Family Mental Health Research Institute, Toronto, Ontario, Canada
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - Anton Lindberg
- Azrieli Centre for Neuro-Radiochemistry, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Campbell Family Mental Health Research Institute, Toronto, Ontario, Canada
| | - Junchao Tong
- Azrieli Centre for Neuro-Radiochemistry, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Campbell Family Mental Health Research Institute, Toronto, Ontario, Canada
| | - Dongxu Zhai
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Campbell Family Mental Health Research Institute, Toronto, Ontario, Canada
| | - Fang Liu
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Campbell Family Mental Health Research Institute, Toronto, Ontario, Canada
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Neil Vasdev
- Azrieli Centre for Neuro-Radiochemistry, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Campbell Family Mental Health Research Institute, Toronto, Ontario, Canada
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
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3
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McCord K, Wang C, Anhalt M, Poon WW, Gavin AL, Wu P, Macauley MS. Dissecting the Ability of Siglecs To Antagonize Fcγ Receptors. ACS CENTRAL SCIENCE 2024; 10:315-330. [PMID: 38435516 PMCID: PMC10906256 DOI: 10.1021/acscentsci.3c00969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 03/05/2024]
Abstract
Fcγ receptors (FcγRs) play key roles in the effector function of IgG, but their inappropriate activation plays a role in several disease etiologies. Therefore, it is critical to better understand how FcγRs are regulated. Numerous studies suggest that sialic acid-binding immunoglobulin-type lectins (Siglecs), a family of immunomodulatory receptors, modulate FcγR activity; however, it is unclear of the circumstances in which Siglecs can antagonize FcγRs and which Siglecs have this ability. Using liposomes displaying selective ligands to coengage FcγRs with a specific Siglec, we explore the ability of Siglec-3, Siglec-5, Siglec-7, and Siglec-9 to antagonize signaling downstream of FcγRs. We demonstrate that Siglec-3 and Siglec-9 can fully inhibit FcγR activation in U937 cells when coengaged with FcγRs. Cells expressing Siglec mutants reveal differential roles for the immunomodulatory tyrosine-based inhibitory motif (ITIM) and immunomodulatory tyrosine-based switch motif (ITSM) in this inhibition. Imaging flow cytometry enabled visualization of SHP-1 recruitment to Siglec-3 in an ITIM-dependent manner, while SHP-2 recruitment is more ITSM-dependent. Conversely, both cytosolic motifs of Siglec-9 contribute to SHP-1/2 recruitment. Siglec-7 poorly antagonizes FcγR activation for two reasons: masking by cis ligands and differences in its ITIM and ITSM. A chimera of the Siglec-3 extracellular domains and Siglec-5 cytosolic tail strongly inhibits FcγR when coengaged, providing evidence that Siglec-5 is more like Siglec-3 and Siglec-9 in its ability to antagonize FcγRs. Additionally, Siglec-3 and Siglec-9 inhibited FcγRs when coengaged by cells displaying ligands for both the Siglec and FcγRs. These results suggest a role for Siglecs in mediating FcγR inhibition in the context of an immunological synapse, which has important relevance to the effectiveness of immunotherapies.
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Affiliation(s)
- Kelli
A. McCord
- Department
of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta T6G 2G2, Canada
| | - Chao Wang
- Department
of Molecular Medicine, Scripps Research
Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Mirjam Anhalt
- Department
of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta T6G 2G2, Canada
| | - Wayne W. Poon
- Institute
for Memory Impairments and Neurological Disorders, University of California, Irvine, California 92617, United States
| | - Amanda L. Gavin
- Department
of Immunology and Microbiology, Scripps
Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Peng Wu
- Department
of Molecular Medicine, Scripps Research
Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Matthew S. Macauley
- Department
of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta T6G 2G2, Canada
- Department
of Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
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4
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Neys SFH, Heutz JW, van Hulst JAC, Vink M, Bergen IM, de Jong PHP, Lubberts E, Hendriks RW, Corneth OBJ. Aberrant B cell receptor signaling in circulating naïve and IgA + memory B cells from newly-diagnosed autoantibody-positive rheumatoid arthritis patients. J Autoimmun 2024; 143:103168. [PMID: 38350168 DOI: 10.1016/j.jaut.2024.103168] [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: 10/13/2023] [Revised: 01/08/2024] [Accepted: 01/12/2024] [Indexed: 02/15/2024]
Abstract
OBJECTIVE Altered B cell receptor (BCR) signaling has been implicated in the pathogenesis of rheumatoid arthritis (RA). Here we aimed to identify signaling aberrations in autoantibody-positive and autoantibody-negative RA patients by performing a comprehensive analysis of the BCR signaling cascade in different B cell subsets. METHODS We first optimized phosphoflow cytometry for an in-depth analysis of BCR signaling across immunoglobulin isotypes in healthy donors. Subsequently, we compared BCR signaling in circulating B cell subsets from treatment-naïve, newly-diagnosed autoantibody-positive RA and autoantibody-negative RA patients and healthy controls (HCs). RESULTS We observed subset-specific phosphorylation patterns of the BCR signalosome in circulating B cells from healthy donors. Compared with HCs, autoantibody-positive RA patients displayed enhanced responses to BCR stimulation for multiple signaling proteins, specifically in naïve and IgA+ memory B cells. Whereas in unstimulated healthy donor B cells, the phosphorylation status of individual signaling proteins showed only limited correlation, BCR stimulation enhanced the interconnectivity in phosphorylation within the BCR signalosome. However, this strong interconnectivity within the BCR signalosome in stimulated B cells from HCs was lost in RA, especially in autoantibody-positive RA patients. Finally, we observed strong correlations between SYK and BTK protein expression, and IgA and IgG anti-citrullinated protein antibody concentrations in serum from autoantibody-positive RA patients. CONCLUSION Collectively, the isotype-specific analysis of multiple key components of the BCR signalosome identified aberrant BCR signaling responses in treatment-naïve autoantibody-positive RA patients, particularly in naïve B cells and IgA+ memory B cells. Our findings support differential involvement of dysregulated BCR signaling in the pathogenesis of autoantibody-positive and autoantibody-negative RA.
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Affiliation(s)
- Stefan F H Neys
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | - Judith W Heutz
- Department of Rheumatology, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | | | - Madelief Vink
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | - Ingrid M Bergen
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | - Pascal H P de Jong
- Department of Rheumatology, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | - Erik Lubberts
- Department of Rheumatology, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | - Rudi W Hendriks
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, the Netherlands
| | - Odilia B J Corneth
- Department of Pulmonary Medicine, Erasmus MC Rotterdam, Rotterdam, the Netherlands.
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5
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Chen M, Du S, Cheng Y, Zhu X, Wang Y, Shu S, Men Y, He M, Wang H, He Z, Cai L, Zhu J, Wu Z, Li Y, Feng P. Safety, pharmacokinetics and pharmacodynamics of HWH486 capsules in healthy adults: A randomized, double-blind, placebo-controlled, phase I dose-escalation study. Int Immunopharmacol 2024; 126:111285. [PMID: 38061118 DOI: 10.1016/j.intimp.2023.111285] [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: 09/10/2023] [Revised: 11/20/2023] [Accepted: 11/21/2023] [Indexed: 12/28/2023]
Abstract
OBJECTIVES HWH486 inhibits Bruton's tyrosine kinase and therefore shows promise as a treatment against rheumatoid arthritis and chronic spontaneous urticaria. This phase I trial assessed tolerability, safety, pharmacokinetics and pharmacodynamics of a single oral dose of HWH486 capsules in healthy adults. METHODS A single-center, randomized, double-blind, placebo-controlled, dose-escalation study from 10 to 800 mg was conducted in 96 healthy Chinese adults, of whom 80 received HWH486 and 16 received placebo. RESULTS A total of 96 subjects were enrolled, and all completed the study. In the HWH486 group, mean Tmax ranged from 1.03 to 2.00 h, and mean T1/2 ranged from 0.85 to 8.67 h across the dose range from 10 to 800 mg. Mean Cmax increased linearly with dose, while mean AUC0-t increased non-linearly. Occupancy of Bruton's tyrosine kinase peaked within 0.50-4.00 h after administration across the dose groups, and the delay until peak occupancy decreased with increasing dose. Twenty-five subjects (31.25 %) in the HWH486 group experienced 35 treatment-emergent adverse events, while four subjects (25.00 %) in the placebo group experienced eight such events. CONCLUSIONS HWH486 is well tolerated and safe in healthy adults, in whom it can strongly bind Bruton's tyrosine kinase. These findings justify clinical studies of HWH486 efficacy against autoimmune diseases.
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Affiliation(s)
- Man Chen
- Department of Pharmacy, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China; Clinical Trial Center and National Medical Products Administration Key Laboratory for Clinical Research and Evaluation of Innovative Drugs, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China
| | - Shuangqing Du
- Department of Pharmacy, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China; Clinical Trial Center and National Medical Products Administration Key Laboratory for Clinical Research and Evaluation of Innovative Drugs, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China
| | - Yue Cheng
- Department of Pharmacy, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China; Clinical Trial Center and National Medical Products Administration Key Laboratory for Clinical Research and Evaluation of Innovative Drugs, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China
| | - Xiaohong Zhu
- Department of Pharmacy, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China; Clinical Trial Center and National Medical Products Administration Key Laboratory for Clinical Research and Evaluation of Innovative Drugs, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China
| | - Ying Wang
- Department of Pharmacy, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China; Clinical Trial Center and National Medical Products Administration Key Laboratory for Clinical Research and Evaluation of Innovative Drugs, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China
| | - Shiqing Shu
- Department of Pharmacy, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China; Clinical Trial Center and National Medical Products Administration Key Laboratory for Clinical Research and Evaluation of Innovative Drugs, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China
| | - Yuchun Men
- Department of Pharmacy, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China; Clinical Trial Center and National Medical Products Administration Key Laboratory for Clinical Research and Evaluation of Innovative Drugs, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China
| | - Miao He
- Department of Pharmacy, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China; Clinical Trial Center and National Medical Products Administration Key Laboratory for Clinical Research and Evaluation of Innovative Drugs, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China
| | - Huifang Wang
- Department of Pharmacy, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China; Clinical Trial Center and National Medical Products Administration Key Laboratory for Clinical Research and Evaluation of Innovative Drugs, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China
| | - Zhenyu He
- Clinical Research Center, Hubei Bio Pharmaceutical Industry Technology Institute Inc., No. 666, Gaoxin Avenue, Wuhan East Lake Hitech Zone, Wuhan, Hubei 430223, China
| | - Ling Cai
- Clinical Research Center, Hubei Bio Pharmaceutical Industry Technology Institute Inc., No. 666, Gaoxin Avenue, Wuhan East Lake Hitech Zone, Wuhan, Hubei 430223, China
| | - Jie Zhu
- Clinical Research Center, Hubei Bio Pharmaceutical Industry Technology Institute Inc., No. 666, Gaoxin Avenue, Wuhan East Lake Hitech Zone, Wuhan, Hubei 430223, China
| | - Zhe Wu
- Clinical Research Center, Hubei Bio Pharmaceutical Industry Technology Institute Inc., No. 666, Gaoxin Avenue, Wuhan East Lake Hitech Zone, Wuhan, Hubei 430223, China
| | - Yuqiong Li
- Clinical Research Center, Hubei Bio Pharmaceutical Industry Technology Institute Inc., No. 666, Gaoxin Avenue, Wuhan East Lake Hitech Zone, Wuhan, Hubei 430223, China
| | - Ping Feng
- Department of Pharmacy, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China; Clinical Trial Center and National Medical Products Administration Key Laboratory for Clinical Research and Evaluation of Innovative Drugs, West China Hospital, Sichuan University, No. 37, Guoxue Lane, Chengdu, Sichuan 610041, P.R. China.
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6
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Liu Y, Huang Z, Zhang TX, Han B, Yang G, Jia D, Yang L, Liu Q, Lau AYL, Paul F, Verkhratsky A, Shi FD, Zhang C. Bruton's tyrosine kinase-bearing B cells and microglia in neuromyelitis optica spectrum disorder. J Neuroinflammation 2023; 20:309. [PMID: 38129902 PMCID: PMC10740299 DOI: 10.1186/s12974-023-02997-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND Neuromyelitis optica spectrum disorder (NMOSD) is an inflammatory autoimmune disease of the central nervous system that involves B-cell receptor signaling as well as astrocyte-microglia interaction, which both contribute to evolution of NMOSD lesions. MAIN BODY Through transcriptomic and flow cytometry analyses, we found that Bruton's tyrosine kinase (BTK), a crucial protein of B-cell receptor was upregulated both in the blood and cerebrospinal fluid of NMOSD patients. Blockade of BTK with zanubrutinib, a highly specific BTK inhibitor, mitigated the activation and maturation of B cells and reduced production of causal aquaporin-4 (AQP4) autoantibodies. In a mouse model of NMO, we found that both BTK and pBTK expression were significantly increased in microglia. Transmission electron microscope scan demonstrated that BTK inhibitor ameliorated demyelination, edema, and axonal injury in NMO mice. In the same mice colocalization of GFAP and Iba-1 immunofluorescence indicated a noticeable increase of astrocytes-microglia interaction, which was alleviated by zanubrutinib. The smart-seq analysis demonstrated that treatment with BTK inhibitor instigated microglial transcriptome changes including downregulation of chemokine-related genes and genes involved in the top 5 biological processes related to cell adhesion and migration, which are likely responsible for the reduced crosstalk of microglia and astrocytes. CONCLUSIONS Our results show that BTK activity is enhanced both in B cells and microglia and BTK inhibition contributes to the amelioration of NMOSD pathology. These data collectively reveal the mechanism of action of BTK inhibition and corroborate BTK as a viable therapeutic target.
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Affiliation(s)
- Ye Liu
- Department of Neurology and Institute of Neuroimmunology, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Zhenning Huang
- Department of Neurology and Institute of Neuroimmunology, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Tian-Xiang Zhang
- Department of Neurology and Institute of Neuroimmunology, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Bin Han
- Department of Neurology and Institute of Neuroimmunology, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Guili Yang
- Department of Neurology and Institute of Neuroimmunology, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Dongmei Jia
- Department of Neurology and Institute of Neuroimmunology, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Center of Neurological Diseases, China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Li Yang
- Department of Neurology and Institute of Neuroimmunology, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Qiang Liu
- Department of Neurology and Institute of Neuroimmunology, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Alexander Y L Lau
- Division of Neurology, Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Friedemann Paul
- Experimental and Clinical Research Center, Max Delbrueck Center for Molecular Medicine and Charité-Universitaetsmedizin Berlin, Berlin, Germany
- NeuroCure Clinical Research Center, Charité-Universitaetsmedizin Berlin, Berlin, Germany
| | - Alexei Verkhratsky
- Faculty of Biology, Health and Medicine, University of Manchester, Manchester, M13 9PL, UK
- Achucarro Centre for Neuroscience, IKERBASQUE, Basque Foundation for Science, 48011, Bilbao, Spain
- Department of Stem Cell Biology, State Research Institute Centre for Innovative Medicine, 01102, Vilnius, Lithuania
| | - Fu-Dong Shi
- Department of Neurology and Institute of Neuroimmunology, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Center of Neurological Diseases, China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Chao Zhang
- Department of Neurology and Institute of Neuroimmunology, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China.
- Center of Neurological Diseases, China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
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7
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Sun SH, Angell CD, Savardekar H, Sundi D, Abood D, Benner B, DiVincenzo MJ, Duggan M, Choueiry F, Mace T, Trikha P, Lapurga G, Johnson C, Carlson EJ, Chung C, Peterson BR, Lianbo Yu, Zhao J, Kendra KL, Carson WE. BTK inhibition potentiates anti-PD-L1 treatment in murine melanoma: potential role for MDSC modulation in immunotherapy. Cancer Immunol Immunother 2023; 72:3461-3474. [PMID: 37528320 PMCID: PMC10592087 DOI: 10.1007/s00262-023-03497-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 07/07/2023] [Indexed: 08/03/2023]
Abstract
Myeloid-derived suppressor cells (MDSC) have been linked to loss of immune effector cell function through a variety of mechanisms such as the generation of reactive oxygen and nitrogen species and the production of inhibitory cytokines. Our group has shown that signaling through Bruton's tyrosine kinase (BTK) is important for MDSC function. Ibrutinib is an orally administered targeted agent that inhibits BTK activation and is currently used for the treatment of B cell malignancies. Using a syngeneic murine model of melanoma, the effect of BTK inhibition with ibrutinib on the therapeutic response to systemic PD-L1 blockade was studied. BTK was expressed by murine MDSC and their activation was inhibited by ibrutinib. Ibrutinib was not directly cytotoxic to cancer cells in vitro, but it inhibited BTK activation in MDSC and reduced expression of inducible nitric oxide synthase (NOS2) and production of nitric oxide. Ibrutinib treatments decreased the levels of circulating MDSC in vivo and increased the therapeutic efficacy of anti-PD-L1 antibody treatment. Gene expression profiling showed that ibrutinib decreased Cybb (NOX2) signaling, and increased IL-17 signaling (upregulating downstream targets Mmp9, Ptgs2, and S100a8). These results suggest that further exploration of MDSC inhibition could enhance the immunotherapy of advanced melanoma.PrécisInhibition of Bruton's tyrosine kinase, a key enzyme in myeloid cellular function, improves therapeutic response to an anti-PD-L1 antibody in an otherwise fairly resistant murine melanoma model.
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Affiliation(s)
- Steven H Sun
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Division of Surgical Oncology, Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Colin D Angell
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Himanshu Savardekar
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Debasish Sundi
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Department of Urology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - David Abood
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Brooke Benner
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Mallory J DiVincenzo
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Megan Duggan
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Fouad Choueiry
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Thomas Mace
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
- Division of Gastrointestinal Oncology, Department of Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Prashant Trikha
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Gabriella Lapurga
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Courtney Johnson
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Erick J Carlson
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH, USA
| | - Catherine Chung
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Blake R Peterson
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH, USA
| | - Lianbo Yu
- Department of Biomedical Informatics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Jing Zhao
- Department of Biomedical Informatics, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Kari L Kendra
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - William E Carson
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA.
- Division of Surgical Oncology, Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, USA.
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8
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Sahin Eroglu D, Dalva K, Azap A, Kutlay NY, Ates A, Yuksel MK. Two birds with one stone: a Bruton's tyrosine kinase inhibitor in a patient with rheumatoid arthritis and 17p + chronic lymphocytic leukaemia. Scand J Rheumatol 2023; 52:703-704. [PMID: 37376955 DOI: 10.1080/03009742.2023.2218206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023]
Affiliation(s)
- D Sahin Eroglu
- Department of Internal Medicine, Division of Rheumatology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - K Dalva
- Department of Internal Medicine, Division of Haematology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - A Azap
- Department of Infectious Diseases, Ankara University Faculty of Medicine, Ankara, Turkey
| | - N Y Kutlay
- Department of Medical Genetics, Ankara University Faculty of Medicine, Ankara, Turkey
| | - A Ates
- Department of Internal Medicine, Division of Rheumatology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - M K Yuksel
- Department of Internal Medicine, Division of Haematology, Ankara University Faculty of Medicine, Ankara, Turkey
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9
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Evonuk KS, Wang S, Mattie J, Cracchiolo CJ, Mager R, Ferenčić Ž, Sprague E, Carrier B, Schofield K, Martinez E, Stewart Z, Petrosino T, Johnson GA, Yusuf I, Plaisted W, Naiman Z, Delp T, Carter L, Marušić S. Bruton's tyrosine kinase inhibition reduces disease severity in a model of secondary progressive autoimmune demyelination. Acta Neuropathol Commun 2023; 11:115. [PMID: 37438842 PMCID: PMC10337138 DOI: 10.1186/s40478-023-01614-w] [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: 05/23/2023] [Accepted: 06/29/2023] [Indexed: 07/14/2023] Open
Abstract
Bruton's tyrosine kinase (BTK) is an emerging target in multiple sclerosis (MS). Alongside its role in B cell receptor signaling and B cell development, BTK regulates myeloid cell activation and inflammatory responses. Here we demonstrate efficacy of BTK inhibition in a model of secondary progressive autoimmune demyelination in Biozzi mice with experimental autoimmune encephalomyelitis (EAE). We show that late in the course of disease, EAE severity could not be reduced with a potent relapse inhibitor, FTY720 (fingolimod), indicating that disease was relapse-independent. During this same phase of disease, treatment with a BTK inhibitor reduced both EAE severity and demyelination compared to vehicle treatment. Compared to vehicle treatment, late therapeutic BTK inhibition resulted in fewer spinal cord-infiltrating myeloid cells, with lower expression of CD86, pro-IL-1β, CD206, and Iba1, and higher expression of Arg1, in both tissue-resident and infiltrating myeloid cells, suggesting a less inflammatory myeloid cell milieu. These changes were accompanied by decreased spinal cord axonal damage. We show similar efficacy with two small molecule inhibitors, including a novel, highly selective, central nervous system-penetrant BTK inhibitor, GB7208. These results suggest that through lymphoid and myeloid cell regulation, BTK inhibition reduced neurodegeneration and disease progression during secondary progressive EAE.
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Affiliation(s)
| | - Sen Wang
- Hooke Laboratories, LLC, 439 South Union Street, Lawrence, MA 01843 USA
| | - Josh Mattie
- Hooke Laboratories, LLC, 439 South Union Street, Lawrence, MA 01843 USA
| | - C. J. Cracchiolo
- Hooke Laboratories, LLC, 439 South Union Street, Lawrence, MA 01843 USA
| | - Reine Mager
- Hooke Laboratories, LLC, 439 South Union Street, Lawrence, MA 01843 USA
| | - Željko Ferenčić
- Hooke Laboratories, LLC, 439 South Union Street, Lawrence, MA 01843 USA
| | - Ethan Sprague
- Hooke Laboratories, LLC, 439 South Union Street, Lawrence, MA 01843 USA
| | - Brandon Carrier
- Hooke Laboratories, LLC, 439 South Union Street, Lawrence, MA 01843 USA
| | - Kai Schofield
- Hooke Laboratories, LLC, 439 South Union Street, Lawrence, MA 01843 USA
| | - Evelyn Martinez
- Hooke Laboratories, LLC, 439 South Union Street, Lawrence, MA 01843 USA
| | - Zachary Stewart
- Hooke Laboratories, LLC, 439 South Union Street, Lawrence, MA 01843 USA
| | - Tara Petrosino
- Hooke Laboratories, LLC, 439 South Union Street, Lawrence, MA 01843 USA
| | | | - Isharat Yusuf
- Gossamer Bio, 3013 Science Park Road, Suite 200, San Diego, CA 92121 USA
| | - Warren Plaisted
- Gossamer Bio, 3013 Science Park Road, Suite 200, San Diego, CA 92121 USA
| | - Zachary Naiman
- Gossamer Bio, 3013 Science Park Road, Suite 200, San Diego, CA 92121 USA
| | - Timothy Delp
- Hooke Laboratories, LLC, 439 South Union Street, Lawrence, MA 01843 USA
| | - Laura Carter
- Gossamer Bio, 3013 Science Park Road, Suite 200, San Diego, CA 92121 USA
| | - Suzana Marušić
- Hooke Laboratories, LLC, 439 South Union Street, Lawrence, MA 01843 USA
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10
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Criado PR, Lorenzini D, Miot HA, Bueno-Filho R, Carneiro FRO, Ianhez M. New small molecules in dermatology: for the autoimmunity, inflammation and beyond. Inflamm Res 2023:10.1007/s00011-023-01744-w. [PMID: 37212867 DOI: 10.1007/s00011-023-01744-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 05/01/2023] [Accepted: 05/15/2023] [Indexed: 05/23/2023] Open
Abstract
OBJECTIVE AND DESIGN The discovery of new inflammatory pathways and the mechanism of action of inflammatory, autoimmune, genetic, and neoplastic diseases led to the development of immunologically driven drugs. We aimed to perform a narrative review regarding the rising of a new class of drugs capable of blocking important and specific intracellular signals in the maintenance of these pathologies: the small molecules. MATERIALS/METHODS A total of 114 scientific papers were enrolled in this narrative review. RESULTS We describe in detail the families of protein kinases-Janus Kinase (JAK), Src kinase, Syk tyrosine kinase, Mitogen-Activated Protein Kinase (MAPK), and Bruton Tyrosine Kinase (BTK)-their physiologic function and new drugs that block these pathways of intracellular signaling. We also detail the involved cytokines and the main metabolic and clinical implications of these new medications in the field of dermatology. CONCLUSIONS Despite having lower specificity compared to specific immunobiological therapies, these new drugs are effective in a wide variety of dermatological diseases, especially diseases that had few therapeutic options, such as psoriasis, psoriatic arthritis, atopic dermatitis, alopecia areata, and vitiligo.
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Affiliation(s)
- Paulo Ricardo Criado
- Faculdade de Medicina Do ABC, Post-Graduation Program, Full Researcher, Santo André, Rua Carneiro Leão 33, Vila Scarpelli, Santo André, São Paulo, Brazil.
| | - Daniel Lorenzini
- Santa Casa de Misericórida de Porto Alegre, Porto Alegre, RS, Brazil
| | - Hélio Amante Miot
- Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Botucatu, São Paulo, Brazil
| | - Roberto Bueno-Filho
- Ribeirão Preto Medical School-University of São Paulo, Ribeirão Preto, Brazil
| | | | - Mayra Ianhez
- Universidade Federal de Goiás (UFG) E Hospital de Doenças Tropicais (HDT-GO), Goiânia, Goiás, Brazil
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11
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Hemme E, Biskop D, Depuydt MAC, Smit V, Delfos L, Bernabé Kleijn MNA, Foks AC, Kuiper J, Bot I. Bruton's Tyrosine Kinase inhibition by Acalabrutinib does not affect early or advanced atherosclerotic plaque size and morphology in Ldlr-/- mice. Vascul Pharmacol 2023; 150:107172. [PMID: 37075932 DOI: 10.1016/j.vph.2023.107172] [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: 02/09/2023] [Revised: 03/31/2023] [Accepted: 04/16/2023] [Indexed: 04/21/2023]
Abstract
Atherosclerosis is characterized by the accumulation of lipids and immune cells, including mast cells and B cells, in the arterial wall. Mast cells contribute to atherosclerotic plaque growth and destabilization upon active degranulation. The FcεRI-IgE pathway is the most prominent mast cell activation route. Bruton's Tyrosine Kinase (BTK) is involved in FcεRI-signaling and may be a potential therapeutic target to limit mast cell activation in atherosclerosis. Additionally, BTK is crucial in B cell development and B-cell receptor signaling. In this project, we aimed to assess the effects of BTK inhibition on mast cell activation and B cell development in atherosclerosis. In human carotid artery plaques, we showed that BTK is primarily expressed on mast cells, B cells and myeloid cells. In vitro, BTK inhibitor Acalabrutinib dose-dependently inhibited IgE mediated activation of mouse bone marrow derived mast cells. In vivo, male Ldlr-/- mice were fed a high-fat diet for eight weeks, during which mice were treated with Acalabrutinib or control solvent. In Acalabrutinib treated mice, B cell maturation was reduced compared to control mice, showing a shift from follicular II towards follicular I B cells. Mast cell numbers and activation status were not affected. Acalabrutinib treatment did not affect atherosclerotic plaque size or morphology. In advanced atherosclerosis, where mice were first fed a high-fat diet for eight weeks before receiving treatment, similar effects were observed. Conclusively, BTK inhibition by Acalabrutinib alone did neither affect either mast cell activation nor early- and advanced atherosclerosis, despite the effects on follicular B cell maturation.
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Affiliation(s)
- Esmeralda Hemme
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, the Netherlands
| | - Danique Biskop
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, the Netherlands
| | - Marie A C Depuydt
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, the Netherlands
| | - Virginia Smit
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, the Netherlands
| | - Lucie Delfos
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, the Netherlands
| | - Mireia N A Bernabé Kleijn
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, the Netherlands
| | - Amanda C Foks
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, the Netherlands
| | - Johan Kuiper
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, the Netherlands
| | - Ilze Bot
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, the Netherlands..
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12
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Akasaka D, Iguchi S, Kaneko R, Yoshiga Y, Kajiwara D, Nakachi Y, Noma N, Tanaka K, Shimizu A, Hosoi F. Novel Bruton's tyrosine kinase inhibitor TAS5315 suppresses the progression of inflammation and joint destruction in rodent collagen-induced arthritis. PLoS One 2023; 18:e0282117. [PMID: 36821545 PMCID: PMC9949657 DOI: 10.1371/journal.pone.0282117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 02/07/2023] [Indexed: 02/24/2023] Open
Abstract
Rheumatoid arthritis is an inflammatory autoimmune disease, characterized by autoantibody production, synovial inflammation, and joint destruction. Its pathogenesis is due to environmental factors and genetic backgrounds. Bruton's tyrosine kinase is a cytoplasmic non-receptor tyrosine kinase, expressed in most hematopoietic cell lineages, except T cells and plasma cells, and regulates various immune-related signaling pathways, thereby playing a crucial role in pathogenesis. Thus, inhibiting Bruton's tyrosine kinase may prove beneficial in treating autoimmune diseases. In the present study, we characterized Bruton's tyrosine kinase inhibitor, TAS5315, in vitro and evaluated its therapeutic effects in experimental arthritis models. TAS5315 markedly inhibited Bruton's tyrosine kinase enzyme activity and suppressed the B-cell receptor signaling pathway in Ramos cells. Moreover, it suppressed the expression of CD69, CD86, and MHC class II in mouse B lymphocytes and the production of TNF-α and MIP-1α in mouse macrophages and decreased bone resorption activity in mouse osteoclasts. Furthermore, it ameliorated the pathological changes in two rodent models of collagen-induced arthritis in vivo. TAS5315 improved bone mineral density and bone intensity. Thus, these results suggest that TAS5315 could be a promising therapeutic option for the treatment of rheumatoid arthritis.
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Affiliation(s)
- Daichi Akasaka
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
- * E-mail:
| | - Satoru Iguchi
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Ryusuke Kaneko
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Yohei Yoshiga
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Daisuke Kajiwara
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Yoshinori Nakachi
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Naruto Noma
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Kenji Tanaka
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Atsushi Shimizu
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Fumihito Hosoi
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
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13
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Park HY, Chae MK, Ko J, Kikkawa DO, Jang SY, Yoon JS. Therapeutic effect of ibrutinib, a selective Bruton's tyrosine kinase inhibitor, in orbital fibroblasts from patients with Graves' orbitopathy. PLoS One 2022; 17:e0279060. [PMID: 36521376 PMCID: PMC9754806 DOI: 10.1371/journal.pone.0279060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 11/29/2022] [Indexed: 12/23/2022] Open
Abstract
PURPOSE Bruton's tyrosine kinase (BTK) is an essential protein in B-cell antigen receptor (BCR) signaling pathway and is known to be related to pathogenetic effect on B-cell related malignancies and various autoimmune diseases. In this study, we investigated the therapeutic effect of ibrutinib, an orally bioavailable BTK inhibitor in the pathogenesis of Graves' orbitopathy (GO) in in vitro model. METHODS Expression of BTK in orbital tissues from GO and normal control subjects were evaluated by real-time polymerase chain reaction (PCR). Primary cultured orbital fibroblasts from each subject were exposed to ibrutinib and stimulated with interleukin (IL)-1β or insulin like growth factor (IGF)-1. Production of inflammatory cytokines was evaluated by real time PCR and enzyme-linked immunosorbent assays (ELISA). The downstream transcription factors were also determined by western blot assays. RESULTS The expression of BTK in GO tissues were significantly higher than in healthy controls. After stimulation of GO orbital fibroblasts with IL-1β or IGF-1, BTK mRNA and phosphorylated (p)- BTK protein expression was also enhanced. Ibrutinib reduced the expression of BTK mRNA and proteins of p-BTK, and inhibited the IL-1β- and IGF-1-induced production of proinflammatory cytokines including IL-6, IL-8 and COX-2 in both GO and normal cells. Ibrutinib also significantly attenuated phosphorylation of Akt, p38, c-Jun N-terminal kinase (JNK), extracellular signal-regulated kinase (ERK), and nuclear factor kappa-light-chain-enhancer of activated B-cells (NF-κB) in IL-1β stimulated GO cells and Akt, JNK, and NF-κB in IL-1ß stimulated normal cells. CONCLUSIONS BTK expression is enhanced in GO tissue and orbital fibroblasts. Ibrutinib, a BTK inhibitor suppresses proinflammatory cytokine production as well as phosphorylation of Akt and NF-κB protein. Our results suggest the potential role of BTK in GO inflammatory pathogenesis and possibility of a novel therapeutic target of GO.
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Affiliation(s)
- Hyun Young Park
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Republic of Korea
- Siloam Eye Hospital, Seoul, Republic of Korea
| | - Min Kyung Chae
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - JaeSang Ko
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Don O. Kikkawa
- Division of Oculofacial Plastic and Reconstructive Surgery, Department of Ophthalmology, University of California San Diego, La Jolla, California, United States of America
| | - Sun Young Jang
- Department of Ophthalmology, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Jin Sook Yoon
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Republic of Korea
- * E-mail:
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14
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Li G, Cheng Y, Han C, Song C, Huang N, Du Y. Pyrazole-containing pharmaceuticals: target, pharmacological activity, and their SAR studies. RSC Med Chem 2022; 13:1300-1321. [PMID: 36439976 PMCID: PMC9667768 DOI: 10.1039/d2md00206j] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 08/25/2022] [Indexed: 11/21/2022] Open
Abstract
Pyrazole is a five-membered heterocycle bearing two adjacent nitrogen atoms. Both pharmaceutical agents and natural products with pyrazole as a nucleus have exhibited a broad spectrum of biological activities. In the last few decades, more than 40 pyrazole-containing drugs have been approved by the FDA for the treatment of a broad range of clinical conditions including celecoxib (anti-inflammatory), CDPPB (antipsychotic), difenamizole (analgesic), etc. Owing to the unique physicochemical properties of the pyrazole core, pyrazole-containing drugs may exert better pharmacokinetics and pharmacological effects compared with drugs containing similar heterocyclic rings. The purpose of this paper is to provide an overview of all the existing drugs bearing a pyrazole nucleus that have been approved or in clinical trials, involving their pharmacological activities and SAR studies.
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Affiliation(s)
- Guangchen Li
- School of Pharmaceutical Science and Technology, Tianjin University Tianjin 300072 China
| | - Yifu Cheng
- School of Pharmaceutical Science and Technology, Tianjin University Tianjin 300072 China
| | - Chi Han
- School of Pharmaceutical Science and Technology, Tianjin University Tianjin 300072 China
| | - Chun Song
- State Key Laboratory of Microbial Technology, Shandong University Qing Dao City Shandong Province 266237 China
| | - Niu Huang
- National Institution of Biological Sciences Beijing, No. 7 Science Park Road, Zhongguancun Life Science Park Beijing 102206 China
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University Beijing 102206 China
| | - Yunfei Du
- School of Pharmaceutical Science and Technology, Tianjin University Tianjin 300072 China
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15
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Taibe NS, Kord MA, Badawy MA, Shytaj IL, Elhefnawi MM. Progress, pitfalls, and path forward of drug repurposing for COVID-19 treatment. Ther Adv Respir Dis 2022; 16:17534666221132736. [PMID: 36282077 PMCID: PMC9597285 DOI: 10.1177/17534666221132736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
On 30 January 2020, the World Health Organization (WHO) declared the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) epidemic a public health emergency of international concern. The viral outbreak led in turn to an exponential growth of coronavirus disease 2019 (COVID-19) cases, that is, a multiorgan disease that has led to more than 6.3 million deaths worldwide, as of June 2022. There are currently few effective drugs approved for treatment of SARS-CoV-2/COVID-19 patients. Many of the compounds tested so far have been selected through a drug repurposing approach, that is, by identifying novel indications for drugs already approved for other conditions. We here present an up-to-date review of the main Food and Drug Administration (FDA)-approved drugs repurposed against SARS-CoV-2 infection, discussing their mechanism of action and their most important preclinical and clinical results. Reviewed compounds were chosen to privilege those that have been approved for use in SARS-CoV-2 patients or that have completed phase III clinical trials. Moreover, we also summarize the evidence on some novel and promising repurposed drugs in the pipeline. Finally, we discuss the current stage and possible steps toward the development of broadly effective drug combinations to suppress the onset or progression of COVID-19.
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Affiliation(s)
- Noha Samir Taibe
- Biotechnology-Biomolecular Chemistry Program, Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Maimona A. Kord
- Department of Botany, Faculty of Science, Cairo University, Giza, Egypt
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16
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Garg N, Padron EJ, Rammohan KW, Goodman CF. Bruton's Tyrosine Kinase Inhibitors: The Next Frontier of B-Cell-Targeted Therapies for Cancer, Autoimmune Disorders, and Multiple Sclerosis. J Clin Med 2022; 11:6139. [PMID: 36294458 PMCID: PMC9604914 DOI: 10.3390/jcm11206139] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/29/2022] [Accepted: 10/09/2022] [Indexed: 11/24/2022] Open
Abstract
Bruton's tyrosine kinase (BTK) is an important protein belonging to the tyrosine kinase family that plays a key role in the intracellular signaling and proliferation, migration, and survival of normal and malignant B-lymphocytes and myeloid cells. Understanding the role of BTK in the B-cell signaling pathway has led to the development of BTK inhibitors (BTKi) as effective therapies for malignancies of myeloid origin and exploration as a promising therapeutic option for other cancers. Given its central function in B-cell receptor signaling, inhibition of BTK is an attractive approach for the treatment of a wide variety of autoimmune diseases that involve aberrant B-cell function including systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), and multiple sclerosis (MS). Here, we review the role of BTK in different cell signaling pathways, the development of BTKi in B-cell malignancies, and their emerging role in the treatment of MS and other autoimmune disorders.
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Affiliation(s)
- Neeta Garg
- Miller School of Medicine, University of Miami, Miami, FL 33136, USA
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17
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Burchett JR, Dailey JM, Kee SA, Pryor DT, Kotha A, Kankaria RA, Straus DB, Ryan JJ. Targeting Mast Cells in Allergic Disease: Current Therapies and Drug Repurposing. Cells 2022; 11:3031. [PMID: 36230993 PMCID: PMC9564111 DOI: 10.3390/cells11193031] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/31/2022] [Accepted: 09/20/2022] [Indexed: 11/22/2022] Open
Abstract
The incidence of allergic disease has grown tremendously in the past three generations. While current treatments are effective for some, there is considerable unmet need. Mast cells are critical effectors of allergic inflammation. Their secreted mediators and the receptors for these mediators have long been the target of allergy therapy. Recent drugs have moved a step earlier in mast cell activation, blocking IgE, IL-4, and IL-13 interactions with their receptors. In this review, we summarize the latest therapies targeting mast cells as well as new drugs in clinical trials. In addition, we offer support for repurposing FDA-approved drugs to target mast cells in new ways. With a multitude of highly selective drugs available for cancer, autoimmunity, and metabolic disorders, drug repurposing offers optimism for the future of allergy therapy.
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Affiliation(s)
| | | | | | | | | | | | | | - John J. Ryan
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284, USA
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18
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Wang H, Guo H, Yang J, Liu Y, Liu X, Zhang Q, Zhou K. Bruton tyrosine kinase inhibitors in B-cell lymphoma: beyond the antitumour effect. Exp Hematol Oncol 2022; 11:60. [PMID: 36138486 PMCID: PMC9493169 DOI: 10.1186/s40164-022-00315-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/11/2022] [Indexed: 01/08/2023] Open
Abstract
Targeting B-cell receptor signalling using Bruton tyrosine kinase (BTK) inhibitors (BTKis) has become a highly successful treatment modality for B-cell malignancies, especially for chronic lymphocytic leukaemia. However, long-term administration of BTKis can be complicated by adverse on- and/or off-target effects in particular cell types. BTK is widely expressed in cells of haematopoietic origin, which are pivotal components of the tumour microenvironment. BTKis, thus, show broad immunomodulatory effects on various non-B immune cell subsets by inhibiting specific immune receptors, including T-cell receptor and Toll-like receptors. Furthermore, due to the off-target inhibition of other kinases, such as IL-2-inducible T-cell kinase, epidermal growth factor receptor, and the TEC and SRC family kinases, BTKis have additional distinct effects on T cells, natural killer cells, platelets, cardiomyocytes, and other cell types. Such mechanisms of action might contribute to the exceptionally high clinical efficacy as well as the unique profiles of adverse effects, including infections, bleeding, and atrial fibrillation, observed during BTKi administration. However, the immune defects and related infections caused by BTKis have not received sufficient attention in clinical studies till date. The broad involvement of BTK in immunological pathways provides a rationale to combine BTKis with specific immunotherapies, such as immune checkpoint inhibitor or chimeric antigen receptor-T-cell therapy, for the treatment of relapsed or refractory diseases. This review discusses and summarises the above-mentioned issues as a reference for clinicians and researchers.
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Affiliation(s)
- Haoran Wang
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, No. 127 Dongming Road, Jinshui District, Zhengzhou, 450003, China
| | - Hao Guo
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, No. 127 Dongming Road, Jinshui District, Zhengzhou, 450003, China
| | - Jingyi Yang
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, No. 127 Dongming Road, Jinshui District, Zhengzhou, 450003, China
| | - Yanyan Liu
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, No. 127 Dongming Road, Jinshui District, Zhengzhou, 450003, China
| | - Xingchen Liu
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, No. 127 Dongming Road, Jinshui District, Zhengzhou, 450003, China
| | - Qing Zhang
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, No. 127 Dongming Road, Jinshui District, Zhengzhou, 450003, China
| | - Keshu Zhou
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, No. 127 Dongming Road, Jinshui District, Zhengzhou, 450003, China.
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19
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Dong R, Yan Y, Zeng X, Lin N, Tan B. Ibrutinib-Associated Cardiotoxicity: From the Pharmaceutical to the Clinical. Drug Des Devel Ther 2022; 16:3225-3239. [PMID: 36164415 PMCID: PMC9508996 DOI: 10.2147/dddt.s377697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 09/06/2022] [Indexed: 12/06/2022] Open
Abstract
Ibrutinib is the first-in-class Bruton tyrosine kinase (BTK) inhibitor that has revolutionized the treatment of B cell malignancies. Unfortunately, increased incidences of cardiotoxicity have limited its use. Despite over a decade of research, the biological mechanisms underlying ibrutinib cardiotoxicity remain unclear. In this review, we discuss the pharmacological properties of ibrutinib, the incidence and mechanisms of ibrutinib-induced cardiotoxicity, and practical management to prevent and treat this condition. We also synopsize and discuss the cardiovascular adverse effects related to other more selective BTK inhibitors, which may guide the selection of appropriate BTK inhibitors.
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Affiliation(s)
- Rong Dong
- Department of Clinical Pharmacy, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, People’s Republic of China
| | - Youyou Yan
- Translational Medicine Research Center, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31006, People’s Republic of China
| | - Xiaokang Zeng
- Department of Critical Care Medicine, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31006, People’s Republic of China
| | - Nengming Lin
- Department of Clinical Pharmacy, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, People’s Republic of China
- Translational Medicine Research Center, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 31006, People’s Republic of China
- Nengming Lin, Department of Clinical Pharmacy, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Room 903, No. 7 Building, Hangzhou, People’s Republic of China, Tel/Fax +86-571-56005600, Email
| | - Biqin Tan
- Department of Clinical Pharmacy, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, People’s Republic of China
- Correspondence: Biqin Tan, Department of Clinical Pharmacy, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Room 207, No. 5 Building, Hangzhou, People’s Republic of China, Tel +86-571-56007824, Fax +86-571-56005600, Email
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20
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Inhibition of Bruton’s Tyrosine Kinase Alleviates Monocrotaline-Induced Pulmonary Arterial Hypertension by Modulating Macrophage Polarization. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6526036. [PMID: 36071873 PMCID: PMC9444460 DOI: 10.1155/2022/6526036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 08/04/2022] [Indexed: 11/25/2022]
Abstract
Macrophage accumulation and activation contribute to the development of pulmonary arterial hypertension (PAH), while Bruton's tyrosine kinase (BTK) is an important regulator for the activation and polarization of macrophage. However, the role of BTK in PAH remains unknown. In the present study, a selective BTK inhibitor (BTKi) BGB-3111 was applied to investigate the role of BTK in monocrotaline- (MCT-) induced PAH rat and phorbol myristate acetate- (PMA-) differentiated U937 macrophages. Our results showed that BTK was mainly distributed and upregulated in CD68+ macrophages in the lungs of PAH rats. Daily treated with BTKi BGB-3111 alleviated MCT-induced PAH, as indicated by the decrease in right ventricular systolic pressure (RVSP), attenuation in right ventricle hypertrophy and pulmonary vascular remodeling, reduction in perivascular collagen deposition, as well as inhibition of inflammation and endothelial-to-mesenchymal transition (EndMT) in the lung. Moreover, BTK inhibition suppressed MCT-induced recruitment of macrophages, especially the classical activated macrophages (M1) in the lung. In vitro, BGB-3111 significantly suppressed lipopolysaccharide- (LPS-) induced M1 polarization and proinflammatory cytokine production in U937-derived macrophages. The underlying mechanism is associated with the inhibition of NF-κB/MAPK pathways and nucleotide-binding oligomerization domain-like receptor with pyrin domain 3 (NLRP3) inflammasome activation. Furthermore, macrophage conditioned medium (CM) from LPS-induced M1 macrophages promoted migration and EndMT of HPAECs, while CM from BGB-3111-pretreated LPS-induced M1 macrophages failed to induce this response. These findings suggest that BTK inhibition alleviates PAH by regulating macrophage recruitment and polarization and may be a potential therapeutic strategy for the treatment of PAH.
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21
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Du Y, Lei L, Ding H, Chen Y, Pathak S, Hicks J, Tran PT, Wu M, Chang B, Wirtz U, Mohan C. Targeting Multiple End Organs in Lupus and Other Systemic Rheumatic Diseases by Inhibiting Bruton’s Tyrosine Kinase. Front Immunol 2022; 13:893899. [PMID: 35874767 PMCID: PMC9304663 DOI: 10.3389/fimmu.2022.893899] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 06/20/2022] [Indexed: 11/25/2022] Open
Abstract
Bruton tyrosine kinase (Btk) plays a vital role in activating and differentiating B-cells and regulating signaling in myeloid cells. Indeed, the potential use of Btk inhibitors in preventing lupus has been reported. Here, we extend these observations to 4 additional models of end-organ inflammation: (a) BWF1 lupus nephritis mice, (b) anti-GBM nephritis, (c) bleomycin-induced systemic sclerosis like skin disease, and (d) bleomycin-induced lung disease. In agreement with the previous studies, BTK inhibitor (BTKB66) treatment was effective in treating lupus nephritis in terms of reducing renal damage both functionally and histologically, accompanied by significant decrease in proteinuria. Both low-dose and high-dose BTKB66 profoundly blocked renal disease in the anti-GBM nephritis model, with efficacy that was comparable to that seen with dexamethasone. This study provides the first evidence that BTK inhibition has both therapeutic and preventative effects in bleomycin-induced SSc-like disease, in terms of reducing skin thickness, fibrosis, collagen deposition, and inflammation. Likewise, significantly lower lung inflammatory cell infiltration was observed after treatment with BTKB66. Therapeutic benefit was associated with lower numbers of macrophages, proliferating macrophages and activated T-cells in the respective injured organs. The observation that these immune cells play key roles in driving end organ inflammation in multiple systemic rheumatic diseases have broad implications for the use of BTKB66 in managing patients with systemic rheumatic diseases where multiple end organs are afflicted, including lupus and systemic sclerosis.
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Affiliation(s)
- Yong Du
- The Department of Biomedical Engineering, University of Houston, Houston, TX, United States
- *Correspondence: Chandra Mohan, ; Yong Du,
| | - Ling Lei
- The Department of Biomedical Engineering, University of Houston, Houston, TX, United States
| | - Huihua Ding
- The Department of Biomedical Engineering, University of Houston, Houston, TX, United States
| | - Yanping Chen
- The Department of Biomedical Engineering, University of Houston, Houston, TX, United States
| | - Simanta Pathak
- The Department of Biomedical Engineering, University of Houston, Houston, TX, United States
| | - John Hicks
- Department of Pathology, Texas Children’s Hospital, Houston, TX, United States
| | - Phuongthy T. Tran
- The Department of Biomedical Engineering, University of Houston, Houston, TX, United States
| | - Minghua Wu
- Division of Rheumatology and Clinical Immunogenetics, University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Betty Chang
- Summit Therapeutics, Menlo Park, CA, United States
| | - Uwe Wirtz
- AbbVie, Inc., Precision Medicine, San Francisco, CA, United States
| | - Chandra Mohan
- The Department of Biomedical Engineering, University of Houston, Houston, TX, United States
- *Correspondence: Chandra Mohan, ; Yong Du,
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22
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Fleischmann R, Friedman A, Drescher E, Singhal A, Cortes-Maisonet G, Doan T, Lu W, Wang Z, Nader A, Housley W, Cohen S, Taylor PC, Blanco R. Safety and efficacy of elsubrutinib or upadacitinib alone or in combination (ABBV-599) in patients with rheumatoid arthritis and inadequate response or intolerance to biological therapies: a multicentre, double-blind, randomised, controlled, phase 2 trial. THE LANCET. RHEUMATOLOGY 2022; 4:e395-e406. [PMID: 38293957 DOI: 10.1016/s2665-9913(22)00092-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 02/01/2024]
Abstract
BACKGROUND ABBV-599 is a novel fixed-dose combination of the Bruton's tyrosine kinase (BTK) inhibitor elsubrutinib and the Janus kinase (JAK) inhibitor upadacitinib under investigation for the treatment of autoimmune diseases. We aimed to determine whether ABBV-599 could increase the treatment response for patients with active rheumatoid arthritis compared with inhibiting either pathway alone, while maintaining an acceptable safety profile. METHODS We conducted a multicentre, double-blind, parallel-group, dose-exploratory, randomised, controlled, phase 2 trial at 75 community sites in eight countries in Europe and North America. We enrolled patients who were 18 years or older with rheumatoid arthritis and inadequate response or intolerance to biological disease-modifying antirheumatic drugs. Eligible patients were randomly assigned (3:2:2:2:2:1) via interactive response technology to receive daily, orally administered ABBV-599 (ie, upadacitinib 15 mg plus elsubrutinib 60 mg), elsubrutinib 60 mg, elsubrutinib 20 mg, elsubrutinib 5 mg, upadacitinib 15 mg, or placebo. Randomisation was stratified by the number of previous biological disease-modifying antirheumatic drugs. The investigator, study site personnel, and patients were masked throughout the study. The primary endpoint was change from baseline in disease activity score of 28 joints with C-reactive protein (DAS28-CRP) at week 12 for all patients who received a study drug. Pharmacokinetics and safety were also assessed. This study is registered with ClinicalTrials.gov, number NCT03682705. FINDINGS Between Oct 8, 2018, and March 26, 2020, 242 patients were randomly assigned to receive ABBV-599 (n=62), elsubrutinib 60 mg (n=41), elsubrutinib 20 mg (n=39), elsubrutinib 5 mg (n=41), upadacitinib 15 mg (n=40), or placebo (n=19). Of the 242 patients, 204 (84%) were female, 38 (16%) were male, and 220 (91%) were White; the mean age at baseline was 58·0 years (SD 11·3). Compared with placebo, the least squares mean changes from baseline in DAS28-CRP were -1·44 (90% CI -2·03 to -0·85; p<0·0001) for ABBV-599, -0·40 (-1·03 to 0·23; p=0·29) for elsubrutinib 60 mg, -0·20 (-0·85 to 0·44; p=0·61) for elsubrutinib 20 mg, -0·21 (-0·84 to 0·41; p=0·57) for elsubrutinib 5 mg, and -1·75 (-2·38 to -1·13; p<0·0001) for upadacitinib. No significant improvements in efficacy measures for elsubrutinib alone (any dose) versus placebo were detected, despite adequate plasma exposure and target engagement. Treatment-emergent adverse events were observed in 113 (47%) of 242 patients, with similar proportions for all groups. INTERPRETATION Significant improvements in disease activity metrics of rheumatoid arthritis with ABBV-599 were driven by the JAK inhibitor upadacitinib with no discernible effect by the BTK inhibitor elsubrutinib. FUNDING AbbVie.
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Affiliation(s)
- Roy Fleischmann
- Metroplex Clinical Research Center, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA.
| | | | - Edit Drescher
- Veszprém Csolnoky Ferenc County Hospital and Vital Medical Centre Private Clinic, Veszprém, Hungary
| | | | | | | | | | | | | | | | - Stanley Cohen
- Metroplex Clinical Research Center, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA
| | - Peter C Taylor
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Ricardo Blanco
- Division of Rheumatology, Hospital Universitario Marqués de Valdecilla, Santander, Spain
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23
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Naik PP. Translational autoimmunity in pemphigus and the role of novel Bruton tyrosine kinase inhibitors. J Transl Autoimmun 2022; 5:100156. [PMID: 35493759 PMCID: PMC9046865 DOI: 10.1016/j.jtauto.2022.100156] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 04/02/2022] [Accepted: 04/11/2022] [Indexed: 11/24/2022] Open
Abstract
Bruton tyrosine kinase (BTK) is involved in a multifarious inflammatory and autoimmune process. As a result, BTK has emerged as a promising novel remedial target for amalgamated autoimmune diseases. Medicament corporations have recently devoted considerable attention to the evolution of BTK inhibitors. Pemphigus is an uncommon and often fatal autoimmune illness. Blisters and erosions on cutaneous surfaces and mucous membranes are crippling symptoms of pemphigus vulgaris, which are caused by immunoglobulin G autoantibodies binding to keratinocyte proteins, resulting in keratinocyte adhesion defects. Although systemic corticosteroids and adjuvant medications are used to treat pemphigus, some patients are resistant to these. BTK inhibitors inhibit B-cell signaling, which is clinically useful in treating pemphigus. Assorted clinical trials are underway to assess the safety, tolerability, and pharmacokinetics of distinct BTK inhibitors, including PRN473 and remibrutinib. The current review evaluates translational autoimmunity in pemphigus and discusses BTK inhibitors in the treatment of pemphigus. Pemphigus is severe, and potentially fatal B-cell-mediated autoimmune illness. •Systemic corticosteroids are used to treat pemphigus, some patients are resistant. •Bruton Tyrosine Kinase (BTK) is involved in a variety of auto-immune processes. •As a result, BTK has emerged as a new therapeutic target including pemphigus. •The current review evaluates the translational autoimmunity in pemphigus. •This review also depicts the role of BTK inhibitors in treatment of pemphigus.
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Roberti A, Chaffey LE, Greaves DR. NF-κB Signaling and Inflammation-Drug Repurposing to Treat Inflammatory Disorders? BIOLOGY 2022; 11:372. [PMID: 35336746 PMCID: PMC8945680 DOI: 10.3390/biology11030372] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/12/2022] [Accepted: 02/15/2022] [Indexed: 12/15/2022]
Abstract
NF-κB is a central mediator of inflammation, response to DNA damage and oxidative stress. As a result of its central role in so many important cellular processes, NF-κB dysregulation has been implicated in the pathology of important human diseases. NF-κB activation causes inappropriate inflammatory responses in diseases including rheumatoid arthritis (RA) and multiple sclerosis (MS). Thus, modulation of NF-κB signaling is being widely investigated as an approach to treat chronic inflammatory diseases, autoimmunity and cancer. The emergence of COVID-19 in late 2019, the subsequent pandemic and the huge clinical burden of patients with life-threatening SARS-CoV-2 pneumonia led to a massive scramble to repurpose existing medicines to treat lung inflammation in a wide range of healthcare systems. These efforts continue and have proven to be controversial. Drug repurposing strategies are a promising alternative to de novo drug development, as they minimize drug development timelines and reduce the risk of failure due to unexpected side effects. Different experimental approaches have been applied to identify existing medicines which inhibit NF-κB that could be repurposed as anti-inflammatory drugs.
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Affiliation(s)
| | | | - David R. Greaves
- Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK; (A.R.); (L.E.C.)
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25
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Minton AR, Smith LD, Bryant DJ, Strefford JC, Forconi F, Stevenson FK, Tumbarello DA, James E, Løset GÅ, Munthe LA, Steele AJ, Packham G. B-cell receptor dependent phagocytosis and presentation of particulate antigen by chronic lymphocytic leukemia cells. EXPLORATION OF TARGETED ANTI-TUMOR THERAPY 2022; 3:37-49. [PMID: 35309250 PMCID: PMC7612515 DOI: 10.37349/etat.2022.00070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 01/28/2022] [Indexed: 11/28/2022] Open
Abstract
Aim T-helper cells could play an important role in the pathogenesis of chronic lymphocytic leukemia (CLL), a common B-cell neoplasm. Although CLL cells can present soluble antigens targeted from the B-cell receptor to T-helper cells via major histocompatibility complex (MHC) class II, antigens recognized by some CLL cells may be encountered in a particulate form. Here the ability of CLL cells to internalize and present anti-immunoglobulin M (IgM) beads as a model for the interaction of CLL cells with particulate antigens was investigated. Methods The effect of anti-IgM beads on antigen presentation pathways was analyzed using RNA-seq and internalization of anti-IgM beads by primary CLL cells was investigated using confocal microscopy and flow cytometry. Antigen presentation was investigated by analyzing activation of a T-cell line expressing a T-cell receptor specific for a peptide derived from mouse κ light chains after incubating CLL cells with a mouse κ light chain-containing anti-IgM monoclonal antibody. Kinase inhibitors were used to characterize the pathways mediating internalization and antigen presentation. Results Stimulation of surface IgM of CLL cells increased expression of the antigen presentation machinery and CLL cells were able to phagocytose anti-IgM beads. Internalization of anti-IgM beads was associated with MHC class II-restricted activation of cognate T-helper cells. Antigen presentation by CLL cells was dependent on activity of spleen tyrosine kinase (SYK) and phosphatidylinositol 3-kinase delta (PI3Kδ) but was unaffected by inhibitors of Bruton's tyrosine kinase (BTK). Conclusions CLL cells can internalize and present antigen from anti-IgM beads. This capacity of CLL cells may be particularly important for recruitment of T-cell help in vivo in response to particulate antigens.
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Affiliation(s)
- Annabel R. Minton
- Cancer Research UK Centre, Cancer Sciences, Faculty of Medicine, University of Southampton, SO16 6YD Southampton, UK
| | - Lindsay D. Smith
- Cancer Research UK Centre, Cancer Sciences, Faculty of Medicine, University of Southampton, SO16 6YD Southampton, UK
- Current address: Ploughshare Innovations Limited, Porton Science Park, Porton Down, SP4 0BF Wiltshire, UK
| | - Dean J. Bryant
- Cancer Research UK Centre, Cancer Sciences, Faculty of Medicine, University of Southampton, SO16 6YD Southampton, UK
| | - Jonathan C. Strefford
- Cancer Research UK Centre, Cancer Sciences, Faculty of Medicine, University of Southampton, SO16 6YD Southampton, UK
| | - Francesco Forconi
- Cancer Research UK Centre, Cancer Sciences, Faculty of Medicine, University of Southampton, SO16 6YD Southampton, UK
| | - Freda K. Stevenson
- Cancer Research UK Centre, Cancer Sciences, Faculty of Medicine, University of Southampton, SO16 6YD Southampton, UK
| | - David A. Tumbarello
- Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, SO17 1BJ Southampton, UK
| | - Edd James
- Cancer Research UK Centre, Cancer Sciences, Faculty of Medicine, University of Southampton, SO16 6YD Southampton, UK
| | | | - Ludvig A. Munthe
- KG Jebsen Centre for B cell Malignancies, Institute of Clinical Medicine, University of Oslo, NO-0424 Oslo, Norway
| | - Andrew J. Steele
- Cancer Research UK Centre, Cancer Sciences, Faculty of Medicine, University of Southampton, SO16 6YD Southampton, UK
- Current address: Janssen R&D, 1400 McKean Road, Spring House, Ambler, PA 19477, USA
| | - Graham Packham
- Cancer Research UK Centre, Cancer Sciences, Faculty of Medicine, University of Southampton, SO16 6YD Southampton, UK
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Mendes‐Bastos P, Brasileiro A, Kolkhir P, Frischbutter S, Scheffel J, Moñino‐Romero S, Maurer M. Bruton's tyrosine kinase inhibition-An emerging therapeutic strategy in immune-mediated dermatological conditions. Allergy 2022; 77:2355-2366. [PMID: 35175630 PMCID: PMC9545595 DOI: 10.1111/all.15261] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 02/08/2022] [Accepted: 02/14/2022] [Indexed: 02/06/2023]
Abstract
Bruton's tyrosine kinase (BTK), a member of the Tec kinase family, is critically involved in a range of immunological pathways. The clinical application of BTK inhibitors for B‐cell malignancies has proven successful, and there is strong rationale for the potential benefits of BTK inhibitors in some autoimmune and allergic conditions, including immune‐mediated dermatological diseases. However, the established risk‐to‐benefit profile of “first‐generation” BTK inhibitors cannot be extrapolated to these emerging, non‐oncological, indications. “Next‐generation” BTK inhibitors such as remibrutinib and fenebrutinib entered clinical development for chronic spontaneous urticaria (CSU); rilzabrutinib and tirabrutinib are being studied as potential treatments for pemphigus. Promising data from early‐phase clinical trials in CSU suggest potential for these agents to achieve strong pathway inhibition, which may translate into measurable clinical benefits, as well as other effects such as the disruption of autoantibody production. BTK inhibitors may help to overcome some of the shortcomings of monoclonal antibody treatments for immune‐mediated dermatological conditions such as CSU, pemphigus, and systemic lupus erythematosus. In addition, the use of BTK inhibitors may improve understanding of the pathophysiological roles of mast cells, basophils, and B cells in such conditions.
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Affiliation(s)
| | - Ana Brasileiro
- Department of Dermatology Hospital Santo António dos Capuchos Centro Hospitalar Universitário Lisboa Central Lisbon Portugal
- NOVA Medical School Universidade NOVA de Lisboa Lisbon Portugal
| | - Pavel Kolkhir
- Dermatological Allergology, Allergie‐Centrum‐Charité, Department of Dermatology and Allergy, Charité‐Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin Humboldt‐Universität zu Berlin, and Berlin Institute of Health Berlin Germany
- Division of Immune‐Mediated Skin Diseases I.M. Sechenov First Moscow State Medical University (Sechenov University) Moscow Russia
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology Berlin Germany
| | - Stefan Frischbutter
- Dermatological Allergology, Allergie‐Centrum‐Charité, Department of Dermatology and Allergy, Charité‐Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin Humboldt‐Universität zu Berlin, and Berlin Institute of Health Berlin Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology Berlin Germany
| | - Jörg Scheffel
- Dermatological Allergology, Allergie‐Centrum‐Charité, Department of Dermatology and Allergy, Charité‐Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin Humboldt‐Universität zu Berlin, and Berlin Institute of Health Berlin Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology Berlin Germany
| | - Sherezade Moñino‐Romero
- Dermatological Allergology, Allergie‐Centrum‐Charité, Department of Dermatology and Allergy, Charité‐Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin Humboldt‐Universität zu Berlin, and Berlin Institute of Health Berlin Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology Berlin Germany
| | - Marcus Maurer
- Dermatological Allergology, Allergie‐Centrum‐Charité, Department of Dermatology and Allergy, Charité‐Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin Humboldt‐Universität zu Berlin, and Berlin Institute of Health Berlin Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology Berlin Germany
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27
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Henderson Berg MH, Del Rincón SV, Miller WH. Potential therapies for immune-related adverse events associated with immune checkpoint inhibition: from monoclonal antibodies to kinase inhibition. J Immunother Cancer 2022; 10:jitc-2021-003551. [PMID: 35086945 PMCID: PMC8796266 DOI: 10.1136/jitc-2021-003551] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/14/2021] [Indexed: 12/17/2022] Open
Abstract
The therapeutic benefits of immune checkpoint inhibitors (ICIs), which enable antitumor immune responses, can be tempered by unwanted immune-related adverse events (irAEs). Treatment recommendations stratified by irAE phenotype and immunohistopathological findings have only recently been proposed and are often based on those used in primary autoimmune diseases, including targeting of specific proinflammatory cytokines with monoclonal antibodies. Increasing evidence supports the use of such antibody-based strategies as effective steroid-sparing treatments, although the therapies themselves may be associated with additional drug toxicities and reduced ICI efficacy. Kinases are key contributors to the adaptive and innate responses that drive primary autoimmune diseases and irAEs. The janus kinase/signal transducer and activator of transcription, Bruton’s tyrosine kinase, and mitogen-activated protein kinase-interacting serine/threonine protein kinases 1 and 2 pathways are also critical to tumor progression and have important roles in cells of the tumor microenvironment. Herein, we review the histopathological, biological, and clinical evidence to support specific monoclonal antibodies and kinase inhibition as management strategies for irAEs.
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Affiliation(s)
- Meagan-Helen Henderson Berg
- Division of Dermatology, McGill University, Montreal, Québec, Canada.,Division of Experimental Medicine, McGill University, Montreal, Québec, Canada.,Cancer Axis, Lady Davis Institute for Medical Research, Montreal, Québec, Canada
| | - Sonia Victoria Del Rincón
- Division of Experimental Medicine, McGill University, Montreal, Québec, Canada .,Cancer Axis, Lady Davis Institute for Medical Research, Montreal, Québec, Canada.,Department of Oncology, Jewish General Hospital and McGill University, Montreal, Québec, Canada.,Centre for Translational Research, McGill University, Montreal, Québec, Canada
| | - Wilson H Miller
- Division of Experimental Medicine, McGill University, Montreal, Québec, Canada .,Cancer Axis, Lady Davis Institute for Medical Research, Montreal, Québec, Canada.,Department of Oncology, Jewish General Hospital and McGill University, Montreal, Québec, Canada.,Centre for Translational Research, McGill University, Montreal, Québec, Canada.,Rossy Cancer Network, McGill University, Montreal, Québec, Canada
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28
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Inhibition of Bruton Tyrosine Kinase Reduces Neuroimmune Cascade and Promotes Recovery after Spinal Cord Injury. Int J Mol Sci 2021; 23:ijms23010355. [PMID: 35008785 PMCID: PMC8745213 DOI: 10.3390/ijms23010355] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 12/22/2021] [Indexed: 12/21/2022] Open
Abstract
Microglia/astrocyte and B cell neuroimmune responses are major contributors to the neurological deficits after traumatic spinal cord injury (SCI). Bruton tyrosine kinase (BTK) activation mechanistically links these neuroimmune mechanisms. Our objective is to use Ibrutinib, an FDA-approved BTK inhibitor, to inhibit the neuroimmune cascade thereby improving locomotor recovery after SCI. Rat models of contusive SCI, Western blot, immunofluorescence staining imaging, flow cytometry analysis, histological staining, and behavioral assessment were used to evaluate BTK activity, neuroimmune cascades, and functional outcomes. Both BTK expression and phosphorylation were increased at the lesion site at 2, 7, 14, and 28 days after SCI. Ibrutinib treatment (6 mg/kg/day, IP, starting 3 h post-injury for 7 or 14 days) reduced BTK activation and total BTK levels, attenuated the injury-induced elevations in Iba1, GFAP, CD138, and IgG at 7 or 14 days post-injury without reduction in CD45RA B cells, improved locomotor function (BBB scores), and resulted in a significant reduction in lesion volume and significant improvement in tissue-sparing 11 weeks post-injury. These results indicate that Ibrutinib exhibits neuroprotective effects by blocking excessive neuroimmune responses through BTK-mediated microglia/astroglial activation and B cell/antibody response in rat models of SCI. These data identify BTK as a potential therapeutic target for SCI.
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29
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Du J. Synergistic effect of Bruton's tyrosine kinase and TNF‑α in the regulation of rheumatoid arthritis and underlying mechanisms. Exp Ther Med 2021; 23:141. [DOI: 10.3892/etm.2021.11064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 09/01/2021] [Indexed: 11/06/2022] Open
Affiliation(s)
- Jinwan Du
- Department of Rheumatology and Immunology, Chongqing Ninth People's Hospital, Beibei, Chongqing 400700, P.R. China
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Tambaro FP, De Novellis D, Wierda WG. The Role of BTK Inhibition in the Treatment of Chronic Lymphocytic Leukemia: A Clinical View. J Exp Pharmacol 2021; 13:923-935. [PMID: 34744463 PMCID: PMC8565990 DOI: 10.2147/jep.s265284] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 10/08/2021] [Indexed: 01/08/2023] Open
Abstract
The B cell receptor (BCR) signaling pathway is functional and has critical cell survival implications in B cell malignancies, such as chronic lymphocytic leukemia (CLL). Orally administered small molecule tyrosine kinase inhibitors of members of the BCR signaling pathway have proven to be transformational in treatment of CLL. The first-generation inhibitor, ibrutinib, covalently binds to the C481 amino acid of Bruton's tyrosine kinase (BTK), thereby irreversibly inhibiting its kinase activity, and interferes with the biology of the cells, ultimately resulting in CLL cell death and therapeutic response. Remissions are not deep to the point of considering discontinuation for most patients, but BTK-inhibitor-based therapy provides exceptional long-term disease control with continuous treatment. There are in-class toxicities and more selective second- and subsequent-generation agents and reversible inhibitors have been developed with the intent of reducing toxicities. Also, strategies to subvert resistance have included tighter or alternative, non-covalent, inhibitor binding. Furthermore, other strategies to deplete BTK protein, such as degraders, are in development and being tested in the clinic. Ultimately, the development and approval of these agents targeting BTK have ushered in a new era of chemotherapy-free treatments with remarkably improved survival outcomes for patients with CLL.
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Affiliation(s)
- Francesco Paolo Tambaro
- Unità Operativa di Trapianto di Midollo Osseo e Servizio Trasfusionale, Azienda Ospedaliera di Rilievo Nazionale Santobono-Pausilipon, Napoli, Italy
| | - Danilo De Novellis
- Unità Operativa di Trapianto di Midollo Osseo e Servizio Trasfusionale, Azienda Ospedaliera di Rilievo Nazionale Santobono-Pausilipon, Napoli, Italy
- Department of Precision Medicine, University of Campania “L. Vanvitelli”, Napoli, Italy
| | - William G Wierda
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Mehtani D, Puri N. Steering Mast Cells or Their Mediators as a Prospective Novel Therapeutic Approach for the Treatment of Hematological Malignancies. Front Oncol 2021; 11:731323. [PMID: 34631562 PMCID: PMC8497976 DOI: 10.3389/fonc.2021.731323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 09/09/2021] [Indexed: 01/09/2023] Open
Abstract
Tumor cells require signaling and close interaction with their microenvironment for their survival and proliferation. In the recent years, Mast cells have earned a greater importance for their presence and role in cancers. It is known that mast cells are attracted towards tumor microenvironment by secreted soluble chemotactic factors. Mast cells seem to exert a pro-tumorigenic role in hematological malignancies with a few exceptions where they showed anti-cancerous role. This dual role of mast cells in tumor growth and survival may be dependent on the intrinsic characteristics of the particular tumor, differences in tumor microenvironment according to tumor type, and the interactions and heterogeneity of mediators released by mast cells in the tumor microenvironment. In many studies, Mast cells and their mediators have been shown to affect tumor survival and growth, prognosis, inflammation, tumor vascularization and angiogenesis. Modulating mast cell accumulation, viability, activity and mediator release patterns may thus be important in controlling these malignancies. In this review, we emphasize on the role of mast cells in lymphoid malignancies and discuss strategies for targeting and steering mast cells or their mediators as a potential therapeutic approach for the treatment of these malignancies.
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Affiliation(s)
| | - Niti Puri
- Cellular and Molecular Immunology Lab, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
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Sabat M, Dougan DR, Knight B, Lawson JD, Scorah N, Smith CR, Taylor ER, Vu P, Wyrick C, Wang H, Balakrishna D, Hixon M, Madakamutil L, McConn D. Discovery of the Bruton's Tyrosine Kinase Inhibitor Clinical Candidate TAK-020 ( S)-5-(1-((1-Acryloylpyrrolidin-3-yl)oxy)isoquinolin-3-yl)-2,4-dihydro-3 H-1,2,4-triazol-3-one, by Fragment-Based Drug Design. J Med Chem 2021; 64:12893-12902. [PMID: 34448571 DOI: 10.1021/acs.jmedchem.1c01026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
This publication details the successful use of FBDD (fragment-based drug discovery) principles in the invention of a novel covalent Bruton's tyrosine kinase inhibitor, which ultimately became the Takeda Pharmaceuticals clinical candidate TAK-020. Described herein are the discovery of the fragment 5-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one, the subsequent optimization of this hit molecule to the candidate, and synthesis and performance in pharmacodynamic and efficacy models along with direct biophysical comparison of TAK-020 with other clinical-level assets and the marketed drug Ibrutinib.
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Affiliation(s)
- Mark Sabat
- Takeda California, 9625 Towne Centre Dr., San Diego, California 92121, United States
| | - Douglas R Dougan
- Takeda California, 9625 Towne Centre Dr., San Diego, California 92121, United States
| | - Beverly Knight
- Pfizer, 10777 Science Center Dr., San Diego, California 92121, United States
| | - J David Lawson
- Mirati Therapeutics, Inc., 9393 Towne Centre Dr. #200, San Diego, California 92121, United States
| | - Nicholas Scorah
- Takeda California, 9625 Towne Centre Dr., San Diego, California 92121, United States
| | - Christopher R Smith
- Mirati Therapeutics, Inc., 9393 Towne Centre Dr. #200, San Diego, California 92121, United States
| | - Ewan R Taylor
- Takeda California, 9625 Towne Centre Dr., San Diego, California 92121, United States
| | - Phong Vu
- Takeda California, 9625 Towne Centre Dr., San Diego, California 92121, United States
| | - Corey Wyrick
- Takeda California, 9625 Towne Centre Dr., San Diego, California 92121, United States
| | - Haixia Wang
- Takeda California, 9625 Towne Centre Dr., San Diego, California 92121, United States
| | - Deepika Balakrishna
- Takeda California, 9625 Towne Centre Dr., San Diego, California 92121, United States
| | - Mark Hixon
- VeriSIM Life, 1 Sansome Street Suite 3500, San Francisco, California 94104, United States
| | - Loui Madakamutil
- Invivoscribe Therapeutics, Inc., 10222 Barnes Canyon Rd., Bldg. 1, San Diego, California 92121, United States
| | - Donavon McConn
- Takeda California, 9625 Towne Centre Dr., San Diego, California 92121, United States
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Neys SFH, Rip J, Hendriks RW, Corneth OBJ. Bruton's Tyrosine Kinase Inhibition as an Emerging Therapy in Systemic Autoimmune Disease. Drugs 2021; 81:1605-1626. [PMID: 34609725 PMCID: PMC8491186 DOI: 10.1007/s40265-021-01592-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2021] [Indexed: 12/14/2022]
Abstract
Systemic autoimmune disorders are complex heterogeneous chronic diseases involving many different immune cells. A significant proportion of patients respond poorly to therapy. In addition, the high burden of adverse effects caused by "classical" anti-rheumatic or immune modulatory drugs provides a need to develop more specific therapies that are better tolerated. Bruton's tyrosine kinase (BTK) is a crucial signaling protein that directly links B-cell receptor (BCR) signals to B-cell activation, proliferation, and survival. BTK is not only expressed in B cells but also in myeloid cells, and is involved in many different signaling pathways that drive autoimmunity. This makes BTK an interesting therapeutic target in the treatment of autoimmune diseases. The past decade has seen the emergence of first-line BTK small-molecule inhibitors with great efficacy in the treatment of B-cell malignancies, but with unfavorable safety profiles for use in autoimmunity due to off-target effects. The development of second-generation BTK inhibitors with superior BTK specificity has facilitated the investigation of their efficacy in clinical trials with autoimmune patients. In this review, we discuss the role of BTK in key signaling pathways involved in autoimmunity and provide an overview of the different inhibitors that are currently being investigated in clinical trials of systemic autoimmune diseases, including rheumatoid arthritis and systemic lupus erythematosus, as well as available results from completed trials.
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Affiliation(s)
- Stefan F H Neys
- Department of Pulmonary Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Jasper Rip
- Department of Pulmonary Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
- Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Rudi W Hendriks
- Department of Pulmonary Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
| | - Odilia B J Corneth
- Department of Pulmonary Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
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Recent Advances in BTK Inhibitors for the Treatment of Inflammatory and Autoimmune Diseases. Molecules 2021; 26:molecules26164907. [PMID: 34443496 PMCID: PMC8399599 DOI: 10.3390/molecules26164907] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/10/2021] [Accepted: 08/11/2021] [Indexed: 11/17/2022] Open
Abstract
Bruton’s tyrosine kinase (BTK) plays a crucial role in B-cell receptor and Fc receptor signaling pathways. BTK is also involved in the regulation of Toll-like receptors and chemokine receptors. Given the central role of BTK in immunity, BTK inhibition represents a promising therapeutic approach for the treatment of inflammatory and autoimmune diseases. Great efforts have been made in developing BTK inhibitors for potential clinical applications in inflammatory and autoimmune diseases. This review covers the recent development of BTK inhibitors at preclinical and clinical stages in treating these diseases. Individual examples of three types of inhibitors, namely covalent irreversible inhibitors, covalent reversible inhibitors, and non-covalent reversible inhibitors, are discussed with a focus on their structure, bioactivity and selectivity. Contrary to expectations, reversible BTK inhibitors have not yielded a significant breakthrough so far. The development of covalent, irreversible BTK inhibitors has progressed more rapidly. Many candidates entered different stages of clinical trials; tolebrutinib and evobrutinib are undergoing phase 3 clinical evaluation. Rilzabrutinib, a covalent reversible BTK inhibitor, is now in phase 3 clinical trials and also offers a promising future. An analysis of the protein–inhibitor interactions based on published co-crystal structures provides useful clues for the rational design of safe and effective small-molecule BTK inhibitors.
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Xing Y, Chu KA, Wadhwa J, Chen W, Zhu J, Bradshaw JM, Shu J, Foulke MC, Loewenstein N, Nunn P, By K, Phiasivongsa P, Goldstein DM, Langrish CL. Preclinical Mechanisms of Topical PRN473, a Bruton Tyrosine Kinase Inhibitor, in Immune-Mediated Skin Disease Models. Immunohorizons 2021; 5:581-589. [PMID: 34326199 DOI: 10.4049/immunohorizons.2100063] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 07/02/2021] [Indexed: 11/19/2022] Open
Abstract
The expression of Bruton tyrosine kinase (BTK) in B cells and innate immune cells provides essential downstream signaling for BCR, Fc receptors, and other innate immune cell pathways. The topical covalent BTK inhibitor PRN473 has shown durable, reversible BTK occupancy with rapid on-rate and slow off-rate binding kinetics and long residence time, resulting in prolonged, localized efficacy with low systemic exposure in vivo. Mechanisms of PRN473 include inhibition of IgE (FcεR)-mediated activation of mast cells and basophils, IgG (FcγR)-mediated activation of monocytes, and neutrophil migration. In vivo, oral PRN473 was efficacious and well tolerated in the treatment of canine pemphigus foliaceus. In this study, we evaluated in vitro selectivity and functionality, in vivo skin Ab inflammatory responses, and systemic pharmacology with topically administered PRN473. Significant dose-dependent inhibition of IgG-mediated passive Arthus reaction in rats was observed with topical PRN473 and was maintained when given 16 h prior to challenge, reinforcing extended activity with once-daily administration. Similarly, topical PRN473 resulted in significant dose-dependent inhibition of the mouse passive cutaneous anaphylaxis IgE-mediated reaction. Multiday treatment with topical PRN473 in rodents resulted in low-to-no systemic accumulation, suggesting that efficacy was mainly due to localized exposure. Reduced skin Ab inflammatory activity was also confirmed with oral PRN473. These preclinical studies provide a strong biologic basis for targeting innate immune cell responses locally in the skin, with rapid onset of action following once-daily topical PRN473 administration and minimal systemic exposure. Dose-dependent inhibition in these preclinical models of immune-mediated skin diseases support future clinical studies.
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Affiliation(s)
- Yan Xing
- Principia Biopharma Inc., a Sanofi Company, South San Francisco, CA
| | - Katherine A Chu
- Principia Biopharma Inc., a Sanofi Company, South San Francisco, CA
| | - Jyoti Wadhwa
- Principia Biopharma Inc., a Sanofi Company, South San Francisco, CA
| | - Wei Chen
- Principia Biopharma Inc., a Sanofi Company, South San Francisco, CA
| | - Jiang Zhu
- Principia Biopharma Inc., a Sanofi Company, South San Francisco, CA
| | | | - Jin Shu
- Principia Biopharma Inc., a Sanofi Company, South San Francisco, CA
| | - Matthew C Foulke
- Principia Biopharma Inc., a Sanofi Company, South San Francisco, CA
| | | | - Philip Nunn
- Principia Biopharma Inc., a Sanofi Company, South San Francisco, CA
| | - Kolbot By
- Principia Biopharma Inc., a Sanofi Company, South San Francisco, CA
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Palma M, Mulder TA, Österborg A. BTK Inhibitors in Chronic Lymphocytic Leukemia: Biological Activity and Immune Effects. Front Immunol 2021; 12:686768. [PMID: 34276674 PMCID: PMC8282344 DOI: 10.3389/fimmu.2021.686768] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 06/16/2021] [Indexed: 01/15/2023] Open
Abstract
Bruton´s tyrosine kinase (BTK) inhibitor (BTKi)s block the B-cell receptor (BCR) signaling cascade by binding to the BTK enzyme preventing the proliferation and survival of malignant and normal B cells. During the past decade, the clinical use of BTKis for the treatment of B-cell malignancies has exponentially grown, changing the treatment landscape for chronic lymphocytic leukemia (CLL) in particular. At present, three different covalent BTKis, ibrutinib, acalabrutinib and zanubrutinib, are FDA-approved and many new inhibitors are under development. Despite having remarkable selectivity for BTK, the first-in-class BTKi ibrutinib can also bind, with various affinities, to other kinases. The combined inhibition of BTK (“on-target” effect) and other kinases (“off-target” effect) can have additive or synergistic anti-tumor effects but also induce undesired side effects which might be treatment-limiting. Such “off-target” effects are expected to be more limited for second-generation BTKis. Moreover, the blockade of BCR signaling also indirectly affects the tumor microenvironment in CLL. Treatment with BTKis potentially impacts on both innate and adaptive immunity. Whether this affects infection susceptibility and vaccination efficacy requires further investigation. Here, we summarize the available knowledge on the impact of BTKis on the immune system and discuss the possible clinical implications. Indeed, a deeper knowledge on this topic could guide clinicians in the management and prevention of infections in patients with CLL treated with BTKis.
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Affiliation(s)
- Marzia Palma
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden.,Department of Hematology, Karolinska University Hospital, Stockholm, Sweden
| | - Tom A Mulder
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Anders Österborg
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden.,Department of Hematology, Karolinska University Hospital, Stockholm, Sweden
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Frisch ES, Pretzsch R, Weber MS. A Milestone in Multiple Sclerosis Therapy: Monoclonal Antibodies Against CD20-Yet Progress Continues. Neurotherapeutics 2021; 18:1602-1622. [PMID: 33880738 PMCID: PMC8609066 DOI: 10.1007/s13311-021-01048-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2021] [Indexed: 02/04/2023] Open
Abstract
Multiple sclerosis (MS), which is a chronic inflammatory disease of the central nervous system, still represents one of the most common causes of persisting disability with an early disease onset. Growing evidence suggests B cells to play a crucial role in its pathogenesis and progression. Over the last decades, monoclonal antibodies (mabs) against the surface protein CD20 have been intensively studied as a B cell targeting therapy in relapsing MS (RMS) as well as primary progressive MS (PPMS). Pivotal studies on anti-CD20 therapy in RMS showed remarkable clinical and radiological effects, especially on acute inflammation and relapse biology. These results paved the way for further research on the implication of B cells in the pathogenesis of MS. Besides controlling relapse development in RMS, ocrelizumab (OCR) also showed clinical benefits in patients with PPMS and became the first approved drug for this disease course. In this review, we provide an overview of the current anti-CD20 mabs used or tested for the treatment of MS-namely rituximab (RTX), OCR, ofatumumab (OFA), and ublituximab (UB). Besides their effectiveness, we also discuss possible limitations and safety concerns especially in regard to long-term treatment, both for this class of drugs overall as well as for each anti-CD20 mab individually. Additionally, we elucidate to what extent anti-CD20 therapy may alter the function of other immune cells, both directly or indirectly. Finally, we cover the current knowledge on repopulation of CD20+ cells after cessation of anti-CD20 treatment and discuss future aspirations towards alternative, further developed B cell silencing therapies.
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MESH Headings
- Antibodies, Monoclonal/pharmacology
- Antibodies, Monoclonal/therapeutic use
- Antibodies, Monoclonal, Humanized/pharmacology
- Antibodies, Monoclonal, Humanized/therapeutic use
- Antigens, CD20/immunology
- B-Lymphocytes, Regulatory/drug effects
- B-Lymphocytes, Regulatory/immunology
- Clinical Trials as Topic/methods
- Humans
- Multiple Sclerosis/drug therapy
- Multiple Sclerosis/immunology
- Multiple Sclerosis, Chronic Progressive/drug therapy
- Multiple Sclerosis, Chronic Progressive/immunology
- Multiple Sclerosis, Relapsing-Remitting/drug therapy
- Multiple Sclerosis, Relapsing-Remitting/immunology
- Rituximab/pharmacology
- Rituximab/therapeutic use
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Affiliation(s)
- Esther S Frisch
- Institute of Neuropathology, University Medical Center, Georg August University, 37099, Göttingen, Germany
- Department of Neurology, University Medical Center, Georg August University, 37099, Göttingen, Germany
| | - Roxanne Pretzsch
- Institute of Neuropathology, University Medical Center, Georg August University, 37099, Göttingen, Germany
- Department of Neurology, University Medical Center, Georg August University, 37099, Göttingen, Germany
| | - Martin S Weber
- Institute of Neuropathology, University Medical Center, Georg August University, 37099, Göttingen, Germany.
- Department of Neurology, University Medical Center, Georg August University, 37099, Göttingen, Germany.
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38
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Neys SFH, Hendriks RW, Corneth OBJ. Targeting Bruton's Tyrosine Kinase in Inflammatory and Autoimmune Pathologies. Front Cell Dev Biol 2021; 9:668131. [PMID: 34150760 PMCID: PMC8213343 DOI: 10.3389/fcell.2021.668131] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 04/07/2021] [Indexed: 12/15/2022] Open
Abstract
Bruton's tyrosine kinase (BTK) was discovered due to its importance in B cell development, and it has a critical role in signal transduction downstream of the B cell receptor (BCR). Targeting of BTK with small molecule inhibitors has proven to be efficacious in several B cell malignancies. Interestingly, recent studies reveal increased BTK protein expression in circulating resting B cells of patients with systemic autoimmune disease (AID) compared with healthy controls. Moreover, BTK phosphorylation following BCR stimulation in vitro was enhanced. In addition to its role in BCR signaling, BTK is involved in many other pathways, including pattern recognition, Fc, and chemokine receptor signaling in B cells and myeloid cells. This broad involvement in several immunological pathways provides a rationale for the targeting of BTK in the context of inflammatory and systemic AID. Accordingly, numerous in vitro and in vivo preclinical studies support the potential of BTK targeting in these conditions. Efficacy of BTK inhibitors in various inflammatory and AID has been demonstrated or is currently evaluated in clinical trials. In addition, very recent reports suggest that BTK inhibition may be effective as immunosuppressive therapy to diminish pulmonary hyperinflammation in coronavirus disease 2019 (COVID-19). Here, we review BTK's function in key signaling pathways in B cells and myeloid cells. Further, we discuss recent advances in targeting BTK in inflammatory and autoimmune pathologies.
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Dispenza MC. The Use of Bruton's Tyrosine Kinase Inhibitors to Treat Allergic Disorders. CURRENT TREATMENT OPTIONS IN ALLERGY 2021; 8:261-273. [PMID: 33880321 PMCID: PMC8050815 DOI: 10.1007/s40521-021-00286-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 03/20/2021] [Indexed: 12/19/2022]
Abstract
Purpose of review Studies show that inhibitors of Bruton’s tyrosine kinase (BTKis), currently FDA-approved for the treatment of B cell malignancies, can prevent IgE-mediated reactions through broad inhibition of the FcεRI signaling pathway in human mast cells and basophils. This review will summarize recent data supporting the use of these drugs as novel therapies in various allergic disorders. Recent findings Recent studies have shown that BTKis can prevent IgE-mediated degranulation and cytokine production in primary human mast cells and basophils. Two oral doses of the second-generation BTKi acalabrutinib can completely prevent moderate passive systemic anaphylaxis in humanized mice and even protect against death during severe anaphylaxis. Furthermore, two doses of ibrutinib can reduce or eliminate skin prick test responses to foods and aeroallergens in allergic subjects. BTKis in development also show efficacy in clinical trials for chronic urticaria. Unlike other therapies targeting IgE, such as omalizumab, BTKis appear to have rapid onset and transient effects, making them ideal candidates for intermittent use to prevent acute reactions such as IgE-mediated anaphylaxis. Summary These studies suggest that BTKis may be capable of preventing IgE-mediated anaphylaxis, paving the way for future trials in food allergy and urticaria.
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Affiliation(s)
- Melanie C Dispenza
- Division of Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD USA
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40
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Vaccine-Induced Immune Thrombotic Thrombocytopenia (VITT): Targeting Pathomechanisms with Bruton Tyrosine Kinase Inhibitors. Thromb Haemost 2021; 121:1395-1399. [PMID: 33851389 DOI: 10.1055/a-1481-3039] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
A series of cases with rare thromboembolic incidents including cerebral sinus vein thrombosis (some of them fatal) and concomitant thrombocytopenia occurring shortly after vaccination with the coronavirus disease 2019 (COVID-19) vaccine AZD1222 (Vaxzevria) have caused significant concern and led to its temporary suspension in many countries. Immediate laboratory efforts in four of these patients have identified a tentative pathomechanism underlying this syndrome termed initially vaccine-induced prothrombotic immune thrombocytopenia (VIPIT) and renamed recently vaccine-induced immune thrombotic thrombocytopenia (VITT). It encompasses the presence of platelet-activating antibodies to platelet factor-4/heparin complexes, possibly emulated by polyanionic constituents of AZD1222, and thus resembles heparin-induced thrombocytopenia (HIT). Because these immune complexes bind and activate platelets via Fcγ receptor IIA (FcγRIIA), high-dose intravenous immunoglobulin G has been suggested for treatment of VITT in addition to non-heparin anticoagulants. Here we propose inhibitors of Bruton tyrosine kinase (Btk) approved for B cell malignancies (e.g., ibrutinib) as another therapeutic option in VITT, as they are expected to pleiotropically target multiple pathways downstream of FcγRIIA-mediated Btk activation, for example, as demonstrated for the effective inhibition of platelet aggregation, dense granule secretion, P-selectin expression and platelet-neutrophil aggregate formation stimulated by FcγRIIA cross-linking. Moreover, C-type lectin-like receptor CLEC-2- and GPIb-mediated platelet activation, the interactions and activation of monocytes and the release of neutrophil extracellular traps, as encountered in HIT, could be attenuated by Btk inhibitors. As a paradigm for emergency repurposing of approved drugs in COVID-19, off-label use of Btk inhibitors in a low-dose range not affecting haemostatic functions could thus be considered a sufficiently safe option to treat VITT.
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Good L, Benner B, Carson WE. Bruton's tyrosine kinase: an emerging targeted therapy in myeloid cells within the tumor microenvironment. Cancer Immunol Immunother 2021; 70:2439-2451. [PMID: 33818636 PMCID: PMC8019691 DOI: 10.1007/s00262-021-02908-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 03/02/2021] [Indexed: 12/15/2022]
Abstract
Bruton’s tyrosine kinase (BTK) is a non-receptor kinase belonging to the Tec family of kinases. The role of BTK in B cell receptor signaling is well defined and is known to play a key role in the proliferation and survival of malignant B cells. Moreover, BTK has been found to be expressed in cells of the myeloid lineage. BTK has been shown to contribute to a variety of cellular pathways in myeloid cells including signaling in the NLRP3 inflammasome, receptor activation of nuclear factor-κβ and inflammation, chemokine receptor activation affecting migration, and phagocytosis. Myeloid cells are crucial components of the tumor microenvironment and suppressive myeloid cells contribute to cancer progression, highlighting a potential role for BTK inhibition in the treatment of malignancy. The increased interest in BTK inhibition in cancer has resulted in many preclinical studies that are testing the efficacy of using single-agent BTK inhibitors. Moreover, the ability of tumor cells to develop resistance to single-agent checkpoint inhibitors has resulted in clinical studies utilizing BTK inhibitors in combination with these agents to improve clinical responses. Furthermore, BTK regulates the immune response in microbial and viral infections through B cells and myeloid cells such as monocytes and macrophages. In this review, we describe the role that BTK plays in supporting suppressive myeloid cells, including myeloid-derived suppressor cells (MDSC) and tumor-associated macrophages (TAM), while also discussing the anticancer effects of BTK inhibition and briefly describe the role of BTK signaling and BTK inhibition in microbial and viral infections.
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Affiliation(s)
- Logan Good
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Brooke Benner
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - William E Carson
- Department of Surgery, Division of Surgical Oncology, Tzagournis Medical Research Facility, The Ohio State University, Columbus, OH, USA.
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Hanna BS, Yazdanparast H, Demerdash Y, Roessner PM, Schulz R, Lichter P, Stilgenbauer S, Seiffert M. Combining ibrutinib and checkpoint blockade improves CD8+ T-cell function and control of chronic lymphocytic leukemia in Em-TCL1 mice. Haematologica 2021; 106:968-977. [PMID: 32139435 PMCID: PMC8017821 DOI: 10.3324/haematol.2019.238154] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Indexed: 12/21/2022] Open
Abstract
Ibrutinib is a Bruton’s tyrosine kinase (BTK) inhibitor approved for the treatment of multiple B-cell malignancies, including chronic lymphocytic leukemia (CLL). In addition to blocking B-cell receptor signaling and chemokine receptor-mediated pathways in CLL cells, that are known drivers of disease, ibrutinib also affects the microenvironment in CLL via targeting BTK in myeloid cells and IL-2–inducible T-cell kinase (ITK) in T cells. These non-BTK effects were suggested to contribute to the success of ibrutinib in CLL. By using the Eμ-TCL1 adoptive transfer mouse model of CLL, we observed that ibrutinib effectively controls leukemia development, but also results in significantly lower numbers of CD8+ effector T cells, with lower expression of activation markers, as well as impaired proliferation and effector function. Using CD8+ T cells from a T-cell receptor (TCR) reporter mouse, we verified that this is due to a direct effect of ibrutinib on TCR activity, and demonstrate that co-stimulation via CD28 overcomes these effects. Most interestingly, combination of ibrutinib with blocking antibodies targeting PD-1/PD-L1 axis in vivo improved CD8+ T-cell effector function and control of CLL. In summary, these data emphasize the strong immunomodulatory effects of ibrutinib and the therapeutic potential of its combination with immune checkpoint blockade in CLL.
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Affiliation(s)
- Bola S Hanna
- Molecular Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Yasmin Demerdash
- Molecular Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Philipp M Roessner
- Molecular Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ralph Schulz
- Molecular Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Peter Lichter
- Molecular Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Martina Seiffert
- Molecular Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany
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Langrish CL, Bradshaw JM, Francesco MR, Owens TD, Xing Y, Shu J, LaStant J, Bisconte A, Outerbridge C, White SD, Hill RJ, Brameld KA, Goldstein DM, Nunn PA. Preclinical Efficacy and Anti-Inflammatory Mechanisms of Action of the Bruton Tyrosine Kinase Inhibitor Rilzabrutinib for Immune-Mediated Disease. THE JOURNAL OF IMMUNOLOGY 2021; 206:1454-1468. [PMID: 33674445 DOI: 10.4049/jimmunol.2001130] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 01/20/2021] [Indexed: 12/17/2022]
Abstract
Bruton tyrosine kinase (BTK) is expressed in B cells and innate immune cells, acting as an essential signaling element in multiple immune cell pathways. Selective BTK inhibition has the potential to target multiple immune-mediated disease pathways. Rilzabrutinib is an oral, reversible, covalent BTK inhibitor designed for immune-mediated diseases. We examined the pharmacodynamic profile of rilzabrutinib and its preclinical mechanisms of action. In addition to potent and selective BTK enzyme and cellular activity, rilzabrutinib inhibited activation and inflammatory activities of B cells and innate cells such as macrophages, basophils, mast cells, and neutrophils, without cell death (in human and rodent assay systems). Rilzabrutinib demonstrated dose-dependent improvement of clinical scores and joint pathology in a rat model of collagen-induced arthritis and demonstrated reductions in autoantibody-mediated FcγR signaling in vitro and in vivo, with blockade of rat Arthus reaction, kidney protection in mouse Ab-induced nephritis, and reduction in platelet loss in mouse immune thrombocytopenia. Additionally, rilzabrutinib inhibited IgE-mediated, FcεR-dependent immune mechanisms in human basophils and mast cell-dependent mouse models. In canines with naturally occurring pemphigus, rilzabrutinib treatment resulted in rapid clinical improvement demonstrated by anti-inflammatory effects visible within 2 wk and all animals proceeding to complete or substantial disease control. Rilzabrutinib is characterized by reversible covalent BTK binding, long BTK residence time with low systemic exposure, and multiple mechanistic and biological effects on immune cells. Rilzabrutinib's unique characteristics and promising efficacy and safety profile support clinical development of rilzabrutinib for a broad array of immune-mediated diseases.
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Affiliation(s)
| | | | | | - Timothy D Owens
- Principia Biopharma Inc., South San Francisco, CA 94080; and
| | - Yan Xing
- Principia Biopharma Inc., South San Francisco, CA 94080; and
| | - Jin Shu
- Principia Biopharma Inc., South San Francisco, CA 94080; and
| | - Jacob LaStant
- Principia Biopharma Inc., South San Francisco, CA 94080; and
| | | | | | - Stephen D White
- School of Veterinary Medicine, University of California Davis, Davis, CA 95616
| | - Ronald J Hill
- Principia Biopharma Inc., South San Francisco, CA 94080; and
| | - Ken A Brameld
- Principia Biopharma Inc., South San Francisco, CA 94080; and
| | | | - Philip A Nunn
- Principia Biopharma Inc., South San Francisco, CA 94080; and
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44
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von Hundelshausen P, Siess W. Bleeding by Bruton Tyrosine Kinase-Inhibitors: Dependency on Drug Type and Disease. Cancers (Basel) 2021; 13:1103. [PMID: 33806595 PMCID: PMC7961939 DOI: 10.3390/cancers13051103] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 12/13/2022] Open
Abstract
Bruton tyrosine kinase (Btk) is expressed in B-lymphocytes, myeloid cells and platelets, and Btk-inhibitors (BTKi) are used to treat patients with B-cell malignancies, developed against autoimmune diseases, have been proposed as novel antithrombotic drugs, and been tested in patients with severe COVID-19. However, mild bleeding is frequent in patients with B-cell malignancies treated with the irreversible BTKi ibrutinib and the recently approved 2nd generation BTKi acalabrutinib, zanubrutinib and tirabrutinib, and also in volunteers receiving in a phase-1 study the novel irreversible BTKi BI-705564. In contrast, no bleeding has been reported in clinical trials of other BTKi. These include the brain-penetrant irreversible tolebrutinib and evobrutinib (against multiple sclerosis), the irreversible branebrutinib, the reversible BMS-986142 and fenebrutinib (targeting rheumatoid arthritis and lupus erythematodes), and the reversible covalent rilzabrutinib (against pemphigus and immune thrombocytopenia). Remibrutinib, a novel highly selective covalent BTKi, is currently in clinical studies of autoimmune dermatological disorders. This review describes twelve BTKi approved or in clinical trials. By focusing on their pharmacological properties, targeted disease, bleeding side effects and actions on platelets it attempts to clarify the mechanisms underlying bleeding. Specific platelet function tests in blood might help to estimate the probability of bleeding of newly developed BTKi.
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Affiliation(s)
- Philipp von Hundelshausen
- Institute for Cardiovascular Prevention, Ludwig-Maximilians University (LMU), 80336 Munich, Germany;
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 80336 Munich, Germany
| | - Wolfgang Siess
- Institute for Cardiovascular Prevention, Ludwig-Maximilians University (LMU), 80336 Munich, Germany;
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 80336 Munich, Germany
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45
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Esfandiari E, Chen M, Smithson G, Blair D, Faessel H, Wagner J, Mclean L, Fedyk ER. A Phase I, Randomized, Double-Blind, Placebo-Controlled, Single-Dose and Multiple-Rising-Dose Study of the BTK Inhibitor TAK-020 in Healthy Subjects. Clin Transl Sci 2021; 14:820-828. [PMID: 33650758 PMCID: PMC8212709 DOI: 10.1111/cts.12871] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 07/29/2020] [Indexed: 01/08/2023] Open
Abstract
Bruton’s tyrosine kinase (BTK) is a target for treatment of hematologic malignancies and autoimmune diseases. TAK‐020 is a highly selective covalent BTK inhibitor that inhibits both B cell receptor and fragment crystallizable receptor signaling. We assessed the safety/tolerability and pharmacokinetics/pharmacodynamics (PDs) of TAK‐020 in healthy subjects. Each cohort of the single‐rising dose (n = 72; 9 cohorts) and the multiple‐rising dose (n = 48; 6 cohorts) portions of the study comprised six TAK‐020‐treated and two placebo‐treated, subjects aged 18–55 years (inclusive). The PD effects were assessed by measuring BTK occupancy and the inhibition of fragment crystallizable epsilon receptor 1 (FcεRI)‐mediated activation of basophils. Overall, treatment‐emergent adverse events (TEAEs) were similar to placebo; there were no serious TEAEs or no TEAEs leading to discontinuation. TAK‐020 was rapidly absorbed (median time to maximum plasma concentration (Tmax) 45–60 minutes) with a half‐life of ~ 3–9 hours at doses ≥ 2.5 mg. TAK‐020 exposure was generally dose proportional for single doses ≤ 70 mg and after multiple doses of ≤ 60 mg once daily. Target occupancy was dose dependent, with doses ≥ 2.5 mg yielding maximum and sustained occupancy > 70% for > 96 hours. Single doses ≥ 4.4 mg reduced FcεRI‐mediated activation of basophils by > 80% and comparable inhibition was observed with daily dosing ≥3.75 mg for 9 days. Inhibition persisted for 24–72 hours postdose and the duration generally increased with dose. TAK‐020 was generally well‐tolerated in healthy subjects after single and multiple doses and demonstrated target engagement and pathway modulation. The PD effects outlasted drug exposures, as expected for covalent inhibition of BTK.
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Affiliation(s)
| | - Mary Chen
- Takeda Pharmaceuticals International Inc., Cambridge, Massachusetts, USA
| | - Glennda Smithson
- Takeda Pharmaceuticals International Inc., Cambridge, Massachusetts, USA
| | - Derek Blair
- Takeda Pharmaceuticals International Inc., Cambridge, Massachusetts, USA
| | - Helene Faessel
- Takeda Pharmaceuticals International Inc., Cambridge, Massachusetts, USA
| | - John Wagner
- Takeda Pharmaceuticals International Inc., Cambridge, Massachusetts, USA
| | - Lachy Mclean
- Takeda Pharmaceuticals International Inc., Cambridge, Massachusetts, USA
| | - Eric R Fedyk
- Takeda Pharmaceuticals International Inc., Cambridge, Massachusetts, USA
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Jacobs CF, Eldering E, Kater AP. Kinase inhibitors developed for treatment of hematologic malignancies: implications for immune modulation in COVID-19. Blood Adv 2021; 5:913-925. [PMID: 33560402 PMCID: PMC7871903 DOI: 10.1182/bloodadvances.2020003768] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 12/28/2020] [Indexed: 02/07/2023] Open
Abstract
Tyrosine kinase inhibitors (TKIs) are used to target dysregulated signaling pathways in virtually all hematologic malignancies. Many of the targeted signaling pathways are also essential in nonmalignant immune cells. The current coronavirus severe acute respiratory syndrome coronavirus 2 pandemic catalyzed clinical exploration of TKIs in the treatment of the various stages of COVID-19, which are characterized by distinct immune-related complications. Most of the reported effects of TKIs on immune regulation have been explored in vitro, with different class-specific drugs having nonoverlapping target affinities. Moreover, many of the reported in vivo effects are based on artificial animal models or on observations made in symptomatic patients with a hematologic malignancy who often already suffer from disturbed immune regulation. Based on in vitro and clinical observations, we attempt to decipher the impact of the main TKIs approved or in late-stage development for the treatment of hematological malignancies, including inhibitors of Bruton's tyrosine kinase, spleen tyrosine kinase, BCR-Abl, phosphatidylinositol 3-kinase/ mammalian target of rapamycin, JAK/STAT, and FMS-like tyrosine kinase 3, to provide a rationale for how such inhibitors could modify clinical courses of diseases, such as COVID-19.
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Affiliation(s)
- Chaja F Jacobs
- Department of Experimental Immunology and
- Department of Hematology, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Amsterdam, The Netherlands
- Amsterdam Institute for Infection & Immunity, Amsterdam, The Netherlands; and
| | - Eric Eldering
- Department of Experimental Immunology and
- Cancer Center Amsterdam, Amsterdam, The Netherlands
- Amsterdam Institute for Infection & Immunity, Amsterdam, The Netherlands; and
- Lymphoma and Myeloma Center Amsterdam, Amsterdam, The Netherlands
| | - Arnon P Kater
- Department of Hematology, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- Cancer Center Amsterdam, Amsterdam, The Netherlands
- Amsterdam Institute for Infection & Immunity, Amsterdam, The Netherlands; and
- Lymphoma and Myeloma Center Amsterdam, Amsterdam, The Netherlands
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47
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Dispenza MC, Krier-Burris RA, Chhiba KD, Undem BJ, Robida PA, Bochner BS. Bruton's tyrosine kinase inhibition effectively protects against human IgE-mediated anaphylaxis. J Clin Invest 2021; 130:4759-4770. [PMID: 32484802 DOI: 10.1172/jci138448] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 05/28/2020] [Indexed: 01/30/2023] Open
Abstract
No known therapies can prevent anaphylaxis. Bruton's tyrosine kinase (BTK) is an enzyme thought to be essential for high-affinity IgE receptor (FcεRI) signaling in human cells. We tested the hypothesis that FDA-approved BTK inhibitors (BTKis) would prevent IgE-mediated responses including anaphylaxis. We showed that irreversible BTKis broadly prevented IgE-mediated degranulation and cytokine production in primary human mast cells and blocked allergen-induced contraction of isolated human bronchi. To address their efficacy in vivo, we created and used what we believe to be a novel humanized mouse model of anaphylaxis that does not require marrow ablation or human tissue implantation. After a single intravenous injection of human CD34+ cells, NSG-SGM3 mice supported the population of mature human tissue-resident mast cells and basophils. These mice showed excellent responses during passive systemic anaphylaxis using human IgE to selectively evoke human mast cell and basophil activation, and response severity was controllable by alteration of the amount of allergen used for challenge. Remarkably, pretreatment with just 2 oral doses of the BTKi acalabrutinib completely prevented moderate IgE-mediated anaphylaxis in these mice and also significantly protected against death during severe anaphylaxis. Our data suggest that BTKis may be able to prevent anaphylaxis in humans by inhibiting FcεRI-mediated signaling.
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Affiliation(s)
- Melanie C Dispenza
- Division of Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Rebecca A Krier-Burris
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Krishan D Chhiba
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Bradley J Undem
- Division of Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Piper A Robida
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Bruce S Bochner
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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48
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Wang S, Yuan XH, Wang SQ, Zhao W, Chen XB, Yu B. FDA-approved pyrimidine-fused bicyclic heterocycles for cancer therapy: Synthesis and clinical application. Eur J Med Chem 2021; 214:113218. [PMID: 33540357 DOI: 10.1016/j.ejmech.2021.113218] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/16/2021] [Accepted: 01/18/2021] [Indexed: 12/15/2022]
Abstract
Considerable progress has been made in the development of anticancer agents over the past few decades, and a lot of new anticancer agents from natural and synthetic sources have been produced. Among heterocyclic compounds, pyrimidine-fused bicyclic heterocycles possess a variety of biological activities such as anticancer, antiviral, etc. To date, 147 pyrimidine-fused bicyclic heterocycles have been approved for clinical assessment or are currently being used in clinic, 57 of which have been approved by FDA for clinical treatment of various diseases, and 22 of them are being used in the clinic for the treatment of different cancers. As the potentially privileged scaffolds, pyrimidine-fused bicyclic heterocycles may be used to discover new drugs with similar biological targets and improved therapeutic efficacy. This review aims to provide an overview of the anticancer applications and synthetic routes of 22 approved pyrimidine-fused bicyclic heterocyclic drugs in clinic.
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Affiliation(s)
- Shuai Wang
- School of Pharmaceutical Sciences & Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Xiao-Han Yuan
- School of Pharmaceutical Sciences & Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Sai-Qi Wang
- Department of Oncology, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Henan Cancer Institute, NO.127, Dongming Road, Zhengzhou, 450008, PR China
| | - Wen Zhao
- School of Pharmaceutical Sciences & Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, 450001, PR China
| | - Xiao-Bing Chen
- Department of Oncology, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Henan Cancer Institute, NO.127, Dongming Road, Zhengzhou, 450008, PR China
| | - Bin Yu
- School of Pharmaceutical Sciences & Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, 450001, PR China.
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Molina-Cerrillo J, Marquet-Palomanes J, Alonso-Gordoa T, López-Jiménez J, Grande E. May Ibrutinib Have Activity in Respiratory Complications by SARS-CoV-2? Clinical Experience in a Patient with Chronic Lymphocytic Leukemia. Healthcare (Basel) 2021; 9:78. [PMID: 33467441 PMCID: PMC7830068 DOI: 10.3390/healthcare9010078] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 01/22/2023] Open
Abstract
COVID-19 is affecting many countries all around the world. Unfortunately, no treatment has already been approved for the management of patients infected by SARS-CoV-2. It seems that SARS-CoV-2 can induce the activation of an exaggerated immune response against itself according to different mechanisms that are not really well known. Inflammatory interleukins, such as IL-6 among others, play a central role in this uncontrolled immune response. There is a strong rational under ibrutinib use in in the treatment of immune-based diseases, such a as GVHD or RA. Ibrutinib achieves a reduction in the production of TNFα, IL1, IL-6 and Monocyte chemo-attractant protein-1 (MCP-1) by neutrophils and macrophages, that are key players in keeping the inflammatory process. We present our clinical experience about ibrutinib use in ARDS secondary to SARS-CoV-2 in a patient with chronic lymphocytic leukemia (CLL).
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Affiliation(s)
- Javier Molina-Cerrillo
- Medical Oncology Department, University Hospital Ramon y Cajal, 28034 Madrid, Spain
- The Ramón y Cajal Health Research Institute (IRYCIS), CIBERONC, 28034 Madrid, Spain; (J.M.-P.); (J.L.-J.)
- Medical School, Alcalá University, 28805 Madrid, Spain
| | - Juan Marquet-Palomanes
- The Ramón y Cajal Health Research Institute (IRYCIS), CIBERONC, 28034 Madrid, Spain; (J.M.-P.); (J.L.-J.)
- Hematology Department, University Hospital Ramon y Cajal, 28034 Madrid, Spain
| | - Teresa Alonso-Gordoa
- Medical Oncology Department, University Hospital Ramon y Cajal, 28034 Madrid, Spain
- The Ramón y Cajal Health Research Institute (IRYCIS), CIBERONC, 28034 Madrid, Spain; (J.M.-P.); (J.L.-J.)
- Medical School, Alcalá University, 28805 Madrid, Spain
| | - Javier López-Jiménez
- The Ramón y Cajal Health Research Institute (IRYCIS), CIBERONC, 28034 Madrid, Spain; (J.M.-P.); (J.L.-J.)
- Medical School, Alcalá University, 28805 Madrid, Spain
- Hematology Department, University Hospital Ramon y Cajal, 28034 Madrid, Spain
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Abstract
The world is currently embroiled in a pandemic of coronavirus disease 2019 (COVID-19), a respiratory illness caused by the novel betacoronavirus severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The severity of COVID-19 disease ranges from asymptomatic to fatal acute respiratory distress syndrome. In few patients, the disease undergoes phenotypic differentiation between 7 and 14 days of acute illness, either resulting in full recovery or symptom escalation. However, the mechanism of such variation is not clear, but the facts suggest that patient's immune status, comorbidities, and the systemic effects of the viral infection (potentially depending on the SARS-CoV-2 strain involved) play a key role. Subsequently, patients with the most severe symptoms tend to have poor outcomes, manifest severe hypoxia, and possess elevated levels of pro-inflammatory cytokines (including IL-1β, IL-6, IFN-γ, and TNF-α) along with elevated levels of the anti-inflammatory cytokine IL-10, marked lymphopenia, and elevated neutrophil-to-lymphocyte ratios. Based on the available evidence, we propose a mechanism wherein SARS-CoV-2 infection induces direct organ damage while also fueling an IL-6-mediated cytokine release syndrome (CRS) and hypoxia, resulting in escalating systemic inflammation, multi-organ damage, and end-organ failure. Elevated IL-6 and hypoxia together predisposes patients to pulmonary hypertension, and the presence of asymptomatic hypoxia in COVID-19 further compounds this problem. Due to the similar downstream mediators, we discuss the potential synergistic effects and systemic ramifications of SARS-CoV-2 and influenza virus during co-infection, a phenomenon we have termed "COVI-Flu." Additionally, the differences between CRS and cytokine storm are highlighted. Finally, novel management approaches, clinical trials, and therapeutic strategies toward both SARS-CoV-2 and COVI-Flu infection are discussed, highlighting host response optimization and systemic inflammation reduction.
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