1
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Ma N, Wu WB, Zhao XY, Xu LP, Zhang XH, Wang Y, Mo XD, Zhang YY, Zhao XS, Sun YQ, Cheng YF, Liu KY, Chang YJ, Huang XJ. Targeting T FH cells is a novel approach for donor-specific antibody desensitization of allograft candidates: an in vitro and in vivo study. Haematologica 2024; 109:1233-1246. [PMID: 37822236 PMCID: PMC10985458 DOI: 10.3324/haematol.2023.283698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 10/03/2023] [Indexed: 10/13/2023] Open
Abstract
The presence of donor-specific antibodies (DSA) are associated with graft failure either following human leukocyte antigen (HLA)-mismatched allogeneic stem cell transplantation or after organ transplantation. Although targeting B cells and plasma cells have been used for desensitization, there have been reports of failure. T-follicular helper (Tfh) cells assist B cells in differentiating into antibody-secreting plasma cells. We used haploidentical allograft as a platform to investigate the possibility of targeting Tfh cells to desensitize DSA. The quantities of circulating Tfh (cTfh) cell subsets in allograft candidates were abnormal, and these cells, including the cTfh2 and cTfhem cell subsets, were positively related to the production of anti-HLA antibodies. Ex vivo experiments showed that the cTfh cells of anti-HLA antibody-positive allograft candidates could induce B cells to differentiate into DSA-producing plasmablasts. The immune synapse could be involved in the assistance of cTfh cells to B cells in antibody production. In vitro experiments and in vivo clinical pilot studies indicated that targeting cTfh cells with sirolimus can inhibit their auxiliary function in assisting B cells. Ex vivo and in vivo studies demonstrated the effect of sirolimus and rituximab on DSA desensitization compared with either sirolimus or rituximab alone (60%, 43.75%, and 30%, respectively). Our findings provide new insight into the role of Tfh cells in the pathogenesis of DSA production in HLA-mismatched transplant candidates. Our data also indicate that targeting Tfh cells is a novel strategy for DSA desensitization and combination of sirolimus and rituximab might be a potential therapy. The prospective cohort of this study is registered at http://www.chictr.org.cn as #ChiCTR-OPC-15006672.
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Affiliation(s)
- Ning Ma
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044
| | - Wei-Bing Wu
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044
| | - Xiang-Yu Zhao
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044
| | - Lan-Ping Xu
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044
| | - Xiao-Hui Zhang
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044
| | - Yu Wang
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044
| | - Xiao-Dong Mo
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044
| | - Yuan-Yuan Zhang
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044
| | - Xiao-Su Zhao
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044
| | - Yu-Qian Sun
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044
| | - Yi-Fei Cheng
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044
| | - Kai-Yan Liu
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044
| | - Ying-Jun Chang
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044.
| | - Xiao-Jun Huang
- Peking University People's Hospital and Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, No. 11 South Street of Xizhimen, Xicheng District, Beijing 100044, China; Peking-Tsinghua Center for Life Sciences, Beijing 100871, China; Research Unit of Key Technique for Diagnosis and Treatments of Hematologic Malignancies, Chinese Academy of Medical Sciences, 2019RU029, Beijing.
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2
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Wang Z, Jin X, Zeng J, Xiong Z, Chen X. The application of JAK inhibitors in the peri-transplantation period of hematopoietic stem cell transplantation for myelofibrosis. Ann Hematol 2024:10.1007/s00277-024-05703-1. [PMID: 38494551 DOI: 10.1007/s00277-024-05703-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Accepted: 03/06/2024] [Indexed: 03/19/2024]
Abstract
Myelofibrosis (MF) is a myeloproliferative neoplasm (MPN) with a poor prognosis, and allogeneic hematopoietic stem cell transplantation (allo-HSCT) is the only treatment with curative potential. Ruxolitinib, a JAK1/2 inhibitor, has shown promising results in improving patients' symptoms, overall survival, and quality of life, and can be used as a bridging therapy to HSCT that increases the proportion of transplantable patients. However, the effect of this and similar drugs on HSCT outcomes is unknown, and the reports on their efficacy and safety in the peri-transplantation period vary widely in the published literature. This paper reviews clinical data related to the use of JAK inhibitors in the peri-implantation phase of hematopoietic stem cell transplantation for primary myelofibrosis and discusses their efficacy and safety.
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Affiliation(s)
- Zerong Wang
- West China Hospital, Sichuan University, Chendu, Sichuan, China
| | - Xuelian Jin
- West China Hospital, Sichuan University, Chendu, Sichuan, China
| | - Jiajia Zeng
- West China Hospital, Sichuan University, Chendu, Sichuan, China
| | - Zilin Xiong
- West China Hospital, Sichuan University, Chendu, Sichuan, China
| | - Xinchuan Chen
- West China Hospital, Sichuan University, Chendu, Sichuan, China.
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3
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Li X, Zhang Y, Wang C, Wang L, Ye Y, Xue R, Shi Y, Su Q, Zhu Y, Wang L. Drug-Loaded Biomimetic Carriers for Non-Hodgkin's Lymphoma Therapy: Advances and Perspective. ACS Biomater Sci Eng 2024; 10:723-742. [PMID: 38296812 DOI: 10.1021/acsbiomaterials.3c01480] [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] [Indexed: 02/02/2024]
Abstract
Chemotherapy remains the mainstay of treatment for the lymphoma patient population, despite its relatively poor therapeutic results, high toxicity, and low specificity. With the advancement of biotechnology, the significance of drug-loading biomimetic materials in the medical field has become increasingly evident, attracting extensive attention from the scientific community and the pharmaceutical industry. Given that they can cater to the particular requirements of lymphoma patients, drug-loading biomimetic materials have recently become a potent and promising delivery approach for various applications. This review mainly reviews the recent advancements in the treatment of tumors with biological drug carrier-loaded drugs, outlines the mechanisms of lymphoma development and the diverse treatment modalities currently available, and discusses the merits and limitations of biological drug carriers. What is more, the practical application of biocarriers in tumors is explored by providing examples, and the possibility of loading such organisms with antilymphoma drugs for the treatment of lymphoma is conceived.
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Affiliation(s)
- Xiaoqi Li
- School of Clinical Medicine, Shandong Second Medical University, Weifang 261000, Shandong China
- Central Laboratory, Linyi People's Hospital, Linyi 276000, Shandong China
- Linyi Key Laboratory of Nanomedicine, Linyi 276000, Shandong China
| | - Yu Zhang
- Central Laboratory, Linyi People's Hospital, Linyi 276000, Shandong China
- Guangzhou University of Chinese Medicine, Guangzhou 510000, Guangdong China
| | - Chao Wang
- Department of Hematology, Linyi People's Hospital, Linyi 276000, Shandong China
| | - Liyuan Wang
- School of Clinical Medicine, Shandong Second Medical University, Weifang 261000, Shandong China
- Central Laboratory, Linyi People's Hospital, Linyi 276000, Shandong China
- Linyi Key Laboratory of Nanomedicine, Linyi 276000, Shandong China
| | - Yufu Ye
- Department of Hepatobiliary and Pancreatic Surgery, the First Affliliated Hospital, Zhejiang University School of Medicine, Hangzhou310000, Zhejiang China
- Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health, First Affiliated Hospital, School of Medicine, Hangzhou310000, Zhejiang China
| | - Renyu Xue
- Central Laboratory, Linyi People's Hospital, Linyi 276000, Shandong China
| | - Yuanwei Shi
- School of Clinical Medicine, Shandong Second Medical University, Weifang 261000, Shandong China
- Central Laboratory, Linyi People's Hospital, Linyi 276000, Shandong China
| | - Quanping Su
- Central Laboratory, Linyi People's Hospital, Linyi 276000, Shandong China
| | - Yanxi Zhu
- Central Laboratory, Linyi People's Hospital, Linyi 276000, Shandong China
- Linyi Key Laboratory of Nanomedicine, Linyi 276000, Shandong China
- Key Laboratory for Translational Oncology, Xuzhou Medical University, Xuzhou 221000, Jiangsu China
| | - Lijuan Wang
- Central Laboratory, Linyi People's Hospital, Linyi 276000, Shandong China
- Linyi Key Laboratory of Tumor Biology, Linyi 276000, Shandong China
- Linyi Key Laboratory of Nanomedicine, Linyi 276000, Shandong China
- Key Laboratory for Translational Oncology, Xuzhou Medical University, Xuzhou 221000, Jiangsu China
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4
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De Togni E, Cole O, Abboud R. Janus kinase inhibition in the treatment and prevention of graft-versus-host disease. Front Immunol 2024; 15:1304065. [PMID: 38380328 PMCID: PMC10877010 DOI: 10.3389/fimmu.2024.1304065] [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: 09/28/2023] [Accepted: 01/18/2024] [Indexed: 02/22/2024] Open
Abstract
Graft-versus-host disease (GVHD) is a significant cause of morbidity and mortality after allogeneic hematopoietic stem cell transplantation (HSCT). For many years, corticosteroids have been the mainstay treatment for GVHD, but cases of steroid-refractory GVHD and the severe adverse effects of high-dose corticosteroids have increased the need for preventative and therapeutic strategies for GVHD. Due to the nature of alloreactive T cells, GVHD is inherently linked to the graft-versus-leukemia (GVL) effect, the therapeutic driving force behind stem cell transplantation. A considerable clinical challenge is to preserve GVL while suppressing GVHD. The field of GVHD research has greatly expanded over the past decades, including advancements in T cell modulation and depletion, antibody therapies, chemotherapeutics, cellular therapies, and Janus kinase inhibition. In this review, we discuss current approaches and advances in the prophylaxis and treatment of GVHD with a focus on new emerging advancements in Janus kinase inhibitor therapy.
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Affiliation(s)
- Elisa De Togni
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States
| | - Oladipo Cole
- Division of Oncology, Washington University School of Medicine, St. Louis, MO, United States
| | - Ramzi Abboud
- Division of Oncology, Washington University School of Medicine, St. Louis, MO, United States
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5
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Yoshikawa S, Taniguchi K, Sawamura H, Ikeda Y, Tsuji A, Matsuda S. Advantageous tactics with certain probiotics for the treatment of graft-versus-host-disease after hematopoietic stem cell transplantation. World J Hematol 2023; 10:15-24. [DOI: 10.5315/wjh.v10.i2.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 11/03/2022] [Accepted: 11/23/2022] [Indexed: 01/17/2023] Open
Abstract
Hematopoietic stem cell transplantation (HSCT) becomes a standard form of cellular therapy for patients with malignant diseases. HSCT is the first-choice of immunotherapy, although HSCT can be associated with many complications such as graft-versus-host disease (GVHD) which is a major cause of morbidity and mortality after allogeneic HSCT. It has been shown that certain gut microbiota could exert protective and/or regenerative immunomodulatory effects by the production of short-chain fatty acids (SCFAs) such as butyrate in the experimental models of GVHD after allogeneic HSCT. Loss of gut commensal bacteria which can produce SCFAs may worsen dysbiosis, increasing the risk of GVHD. Expression of G-protein coupled receptors such as GPR41 seems to be upre-gulated in the presence of commensal bacteria, which might be associated with the biology of regulatory T cells (Tregs). Treg cells are a suppressive subset of CD4 positive T lymphocytes implicated in the prevention of GVHD after allogeneic HSCT. Here, we discuss the current findings of the relationship between the modification of gut microbiota and the GVHD-related immunity, which suggested that tactics with certain probiotics for the beneficial symbiosis in gut-immune axis might lead to the elevation of safety in the allogeneic HSCT.
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Affiliation(s)
- Sayuri Yoshikawa
- Food Science and Nutrition, Nara Women's University, Nara 630-8506, Japan
| | - Kurumi Taniguchi
- Food Science and Nutrition, Nara Women's University, Nara 630-8506, Japan
| | - Haruka Sawamura
- Food Science and Nutrition, Nara Women's University, Nara 630-8506, Japan
| | - Yuka Ikeda
- Food Science and Nutrition, Nara Women's University, Nara 630-8506, Japan
| | - Ai Tsuji
- Food Science and Nutrition, Nara Women's University, Nara 630-8506, Japan
| | - Satoru Matsuda
- Food Science and Nutrition, Nara Women's University, Nara 630-8506, Japan
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6
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Insights into mechanisms of graft-versus-host disease through humanised mouse models. Biosci Rep 2022; 42:231673. [PMID: 35993192 PMCID: PMC9446388 DOI: 10.1042/bsr20211986] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/15/2022] [Accepted: 08/19/2022] [Indexed: 11/17/2022] Open
Abstract
Graft-versus-host disease (GVHD) is a major complication that occurs following allogeneic haematopoietic stem cell transplantation (HSCT) for the treatment of haematological cancers and other blood-related disorders. GVHD is an inflammatory disorder, where the transplanted donor immune cells can mediate an immune response against the recipient and attack host tissues. Despite over 60 years of research, broad-range immune suppression is still used to prevent or treat GVHD, leading to an increased risk of cancer relapse and infection. Therefore, further insights into the disease mechanisms and development of predictive and prognostic biomarkers are key to improving outcomes and reducing GVHD development following allogeneic HSCT. An important preclinical tool to examine the pathophysiology of GVHD and to understand the key mechanisms that lead to GVHD development are preclinical humanised mouse models. Such models of GVHD are now well-established and can provide valuable insights into disease development. This review will focus on models where human peripheral blood mononuclear cells are injected into immune-deficient non-obese diabetic (NOD)-scid-interleukin-2(IL-2)Rγ mutant (NOD-scid-IL2Rγnull) mice. Humanised mouse models of GVHD can mimic the clinical setting for GVHD development, with disease progression and tissues impacted like that observed in humans. This review will highlight key findings from preclinical humanised mouse models regarding the role of donor human immune cells, the function of cytokines and cell signalling molecules and their impact on specific target tissues and GVHD development. Further, specific therapeutic strategies tested in these preclinical models reveal key molecular pathways important in reducing the burden of GVHD following allogeneic HSCT.
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7
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Abstract
Pacritinib (VONJO™) is an orally administered, small molecule kinase inhibitor being developed by CTI BioPharma for the treatment of myelofibrosis and graft-versus-host disease. Pacritinib received its first approval in February 2022 in the USA for the treatment of adults with intermediate- or high-risk primary or secondary (post-polycythemia vera or post-essential thrombocythemia) myelofibrosis with a platelet count below 50 × 109/L. The accelerated approval was based on results from the randomized, active-controlled, phase III PERSIST-2 trial, in which spleen volume reduction was demonstrated in pacritinib recipients. This article summarizes the milestones in the development of pacritinib leading to this first approval for myelofibrosis.
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Affiliation(s)
- Yvette N Lamb
- Springer Nature, Private Bag 65901, Mairangi Bay, Auckland, 0754, New Zealand.
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8
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Campe J, Ullrich E. T Helper Cell Lineage-Defining Transcription Factors: Potent Targets for Specific GVHD Therapy? Front Immunol 2022; 12:806529. [PMID: 35069590 PMCID: PMC8766661 DOI: 10.3389/fimmu.2021.806529] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 12/14/2021] [Indexed: 12/12/2022] Open
Abstract
Allogenic hematopoietic stem cell transplantation (allo-HSCT) represents a potent and potentially curative treatment for many hematopoietic malignancies and hematologic disorders in adults and children. The donor-derived immunity, elicited by the stem cell transplant, can prevent disease relapse but is also responsible for the induction of graft-versus-host disease (GVHD). The pathophysiology of acute GVHD is not completely understood yet. In general, acute GVHD is driven by the inflammatory and cytotoxic effect of alloreactive donor T cells. Since several experimental approaches indicate that CD4 T cells play an important role in initiation and progression of acute GVHD, the contribution of the different CD4 T helper (Th) cell subtypes in the pathomechanism and regulation of the disease is a central point of current research. Th lineages derive from naïve CD4 T cell progenitors and lineage commitment is initiated by the surrounding cytokine milieu and subsequent changes in the transcription factor (TF) profile. Each T cell subtype has its own effector characteristics, immunologic function, and lineage specific cytokine profile, leading to the association with different immune responses and diseases. Acute GVHD is thought to be mainly driven by the Th1/Th17 axis, whereas Treg cells are attributed to attenuate GVHD effects. As the differentiation of each Th subset highly depends on the specific composition of activating and repressing TFs, these present a potent target to alter the Th cell landscape towards a GVHD-ameliorating direction, e.g. by inhibiting Th1 and Th17 differentiation. The finding, that targeting of Th1 and Th17 differentiation appears more effective for GVHD-prevention than a strategy to inhibit Th1 and Th17 cytokines supports this concept. In this review, we shed light on the current advances of potent TF inhibitors to alter Th cell differentiation and consecutively attenuate GVHD. We will focus especially on preclinical studies and outcomes of TF inhibition in murine GVHD models. Finally, we will point out the possible impact of a Th cell subset-specific immune modulation in context of GVHD.
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Affiliation(s)
- Julia Campe
- Experimental Immunology, Children's University Hospital, Goethe University Frankfurt, Frankfurt am Main, Germany.,Children's University Hospital, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Evelyn Ullrich
- Experimental Immunology, Children's University Hospital, Goethe University Frankfurt, Frankfurt am Main, Germany.,Children's University Hospital, Goethe University Frankfurt, Frankfurt am Main, Germany.,Frankfurt Cancer Institute, Goethe University Frankfurt, Frankfurt am Main, Germany.,German Cancer Consortium (Deutsches Konsortium für Translationale Krebsforschung (DKTK)), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany
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9
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Braun LM, Zeiser R. Kinase Inhibition as Treatment for Acute and Chronic Graft- Versus-Host Disease. Front Immunol 2021; 12:760199. [PMID: 34868001 PMCID: PMC8635802 DOI: 10.3389/fimmu.2021.760199] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 10/28/2021] [Indexed: 01/25/2023] Open
Abstract
Allogeneic hematopoietic stem cell transplantation (allo-HCT) is a potentially curative therapy for patients suffering from hematological malignancies via the donor immune system driven graft-versus-leukemia effect. However, the therapy is mainly limited by severe acute and chronic graft-versus-host disease (GvHD), both being life-threatening complications after allo-HCT. GvHD develops when donor T cells do not only recognize remaining tumor cells as foreign, but also the recipient’s tissue, leading to a severe inflammatory disease. Typical GvHD target organs include the skin, liver and intestinal tract. Currently all approved strategies for GvHD treatment are immunosuppressive therapies, with the first-line therapy being glucocorticoids. However, therapeutic options for glucocorticoid-refractory patients are still limited. Novel therapeutic approaches, which reduce GvHD severity while preserving GvL activity, are urgently needed. Targeting kinase activity with small molecule inhibitors has shown promising results in preclinical animal models and clinical trials. Well-studied kinase targets in GvHD include Rho-associated coiled-coil-containing kinase 2 (ROCK2), spleen tyrosine kinase (SYK), Bruton’s tyrosine kinase (BTK) and interleukin-2-inducible T-cell kinase (ITK) to control B- and T-cell activation in acute and chronic GvHD. Janus Kinase 1 (JAK1) and 2 (JAK2) are among the most intensively studied kinases in GvHD due to their importance in cytokine production and inflammatory cell activation and migration. Here, we discuss the role of kinase inhibition as novel treatment strategies for acute and chronic GvHD after allo-HCT.
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Affiliation(s)
- Lukas M Braun
- Department of Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Robert Zeiser
- Department of Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,German Cancer Consortium (DKTK) Partner Site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Comprehensive Cancer Center Freiburg (CCCF), University of Freiburg, Freiburg, Germany.,Centre for Biological Signalling Studies (BIOSS) and Centre for Integrative Biological Signalling Studies (CIBSS), University of Freiburg, Freiburg, Germany
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10
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Huang J, Li Z, Hu Y, Chen G, Li Z, Xie Y, Huang H, Su W, Chen X, Liang D. Azithromycin modulates Teff/Treg balance in retinal inflammation via the mTOR signaling pathway. Biochem Pharmacol 2021; 193:114793. [PMID: 34600916 DOI: 10.1016/j.bcp.2021.114793] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 09/27/2021] [Accepted: 09/28/2021] [Indexed: 02/02/2023]
Abstract
Uveitis is one of the most common blindness-causing ocular disorders. Due to its complicated pathogenesis, the treatment of uveitis has been widely recognized as a challenge for ophthalmologists. Recently, the anti-inflammatory properties of the antibiotic Azithromycin (AZM) have been reported. However, the therapeutic effects of Azithromycin in experimental autoimmune uveitis (EAU), a representative model of human AU, have not been elucidated till date. We conducted this study to examine the therapeutic effects and potential mechanisms of Azithromycin in EAU. We observed that Azithromycin significantly attenuated retinal inflammation in EAU mice at day 14 after immunization along with a significantly decreased inflammatory cell infiltration and cytokine production in the retina. Furthermore, we observed that Azithromycin increased the number of regulatory T cells (Treg) and decreased the number of effector T cells (Teff) in both the draining lymph nodes and spleen of EAU mice. Additionally, Azithromycin suppressed the proliferation and activation of CD4 + T cells, and induced the apoptosis of CD4 + CD44 + memory T and CD4 + CXCR3 + Th1 cells. Mechanistically, we proved that Azithromycin could regulate Teff/Treg balance by inhibiting the phosphorylation of S6 ribosomal protein, a downstream target of mammalian target of rapamycin (mTOR). Together, our findings revealed that Azithromycin alleviated EAU by regulating the Teff/Treg balance through the mTOR signaling pathway, suggesting that Azithromycin could be a promising therapeutic candidate for AU.
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Affiliation(s)
- Jun Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Zhuang Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Yunwei Hu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Guanyu Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Zuoyi Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Yanyan Xie
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Haixiang Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Wenru Su
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Xiaoqing Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China.
| | - Dan Liang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China.
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11
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Hess NJ, Brown ME, Capitini CM. GVHD Pathogenesis, Prevention and Treatment: Lessons From Humanized Mouse Transplant Models. Front Immunol 2021; 12:723544. [PMID: 34394131 PMCID: PMC8358790 DOI: 10.3389/fimmu.2021.723544] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 07/15/2021] [Indexed: 01/14/2023] Open
Abstract
Graft-vs-host disease (GVHD) is the most common cause of non-relapse mortality following allogeneic hematopoietic stem cell transplantation (HSCT) despite advances in conditioning regimens, HLA genotyping and immune suppression. While murine studies have yielded important insights into the cellular responses of GVHD, differences between murine and human biology has hindered the translation of novel therapies into the clinic. Recently, the field has expanded the ability to investigate primary human T cell responses through the transplantation of human T cells into immunodeficient mice. These xenogeneic HSCT models benefit from the human T cell receptors, CD4 and CD8 proteins having cross-reactivity to murine MHC in addition to several cytokines and co-stimulatory proteins. This has allowed for the direct assessment of key factors in GVHD pathogenesis to be investigated prior to entering clinical trials. In this review, we will summarize the current state of clinical GVHD research and discuss how xenogeneic HSCT models will aid in advancing the current pipeline of novel GVHD prophylaxis therapies into the clinic.
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Affiliation(s)
- Nicholas J. Hess
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States
| | - Matthew E. Brown
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States
| | - Christian M. Capitini
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States
- University of Wisconsin Carbone Cancer Center, Madison, WI, United States
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Untwining Anti-Tumor and Immunosuppressive Effects of JAK Inhibitors-A Strategy for Hematological Malignancies? Cancers (Basel) 2021; 13:cancers13112611. [PMID: 34073410 PMCID: PMC8197909 DOI: 10.3390/cancers13112611] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/18/2021] [Accepted: 05/22/2021] [Indexed: 01/02/2023] Open
Abstract
Simple Summary The Janus kinase-signal transducer and activator of transcription (JAK-STAT) pathway is aberrantly activated in many malignancies. Inhibition of this pathway via JAK inhibitors (JAKinibs) is therefore an attractive therapeutic strategy underlined by Ruxolitinib (JAK1/2 inhibitor) being approved for the treatment of myeloproliferative neoplasms. As a consequence of the crucial role of the JAK-STAT pathway in the regulation of immune responses, inhibition of JAKs suppresses the immune system. This review article provides a thorough overview of the current knowledge on JAKinibs’ effects on immune cells in the context of hematological malignancies. We also discuss the potential use of JAKinibs for the treatment of diseases in which lymphocytes are the source of the malignancy. Abstract The Janus kinase-signal transducer and activator of transcription (JAK-STAT) pathway propagates signals from a variety of cytokines, contributing to cellular responses in health and disease. Gain of function mutations in JAKs or STATs are associated with malignancies, with JAK2V617F being the main driver mutation in myeloproliferative neoplasms (MPN). Therefore, inhibition of this pathway is an attractive therapeutic strategy for different types of cancer. Numerous JAK inhibitors (JAKinibs) have entered clinical trials, including the JAK1/2 inhibitor Ruxolitinib approved for the treatment of MPN. Importantly, loss of function mutations in JAK-STAT members are a cause of immune suppression or deficiencies. MPN patients undergoing Ruxolitinib treatment are more susceptible to infections and secondary malignancies. This highlights the suppressive effects of JAKinibs on immune responses, which renders them successful in the treatment of autoimmune diseases but potentially detrimental for cancer patients. Here, we review the current knowledge on the effects of JAKinibs on immune cells in the context of hematological malignancies. Furthermore, we discuss the potential use of JAKinibs for the treatment of diseases in which lymphocytes are the source of malignancies. In summary, this review underlines the necessity of a robust immune profiling to provide the best benefit for JAKinib-treated patients.
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