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Algeri M, Becilli M, Locatelli F. Ruxolitinib as the first post-steroid treatment for acute and chronic graft-versus-host disease. Expert Rev Clin Immunol 2023; 19:1299-1313. [PMID: 37606511 DOI: 10.1080/1744666x.2023.2249230] [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: 12/30/2022] [Accepted: 08/14/2023] [Indexed: 08/23/2023]
Abstract
INTRODUCTION Acute and chronic graft-versus-host disease (GvHD) are potentially life-threatening complications occurring after allogeneic stem cell transplantation (allo-HSCT). Although steroids represent the first-line treatment for both conditions, in those patients who do not adequately benefit from steroid therapy, standardized treatment algorithms are lacking. In recent years, ruxolitinib has emerged as the most promising agent for the second-line therapy of steroid-refractory (SR)-GvHD. AREAS COVERED This review will summarize the biological properties and the mechanistic aspects that justify the therapeutic role of ruxolitinib in GvHD. In addition, current treatment options for SR-GvHD will be briefly discussed. Finally, results of the most relevant clinical trials on the use of ruxolitinib for SR-GvHD will be analyzed, with a particular focus on two phase-III randomized trials in which ruxolitinib demonstrated its superiority in comparison with the best available therapy. EXPERT OPINION Ruxolitinib has considerably improved the outcome of patients with SR-acute/chronic-GvHD and should be regarded as the standard-of-care option when corticosteroids fail or cannot be tapered. Nevertheless, a number of questions still remain unanswered and significant room for improvement exists. Additional observations derived from a longer follow-up will certainly increase our expertise in the management of this powerful therapy.
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Affiliation(s)
- Mattia Algeri
- Department of Haematology/Oncology and Cell and Gene Therapy, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
- Department of Health Science, Magna Grecia University of Catanzaro, Catanzaro, Italy
| | - Marco Becilli
- Department of Haematology/Oncology and Cell and Gene Therapy, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
| | - Franco Locatelli
- Department of Haematology/Oncology and Cell and Gene Therapy, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
- Department of Life Sciences and Public Health, Catholic University of the Sacred Heart, Rome, Italy
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Fraebel J, Engelhardt BG, Kim TK. Noninfectious Pulmonary Complications after Hematopoietic Stem Cell Transplantation. Transplant Cell Ther 2023; 29:82-93. [PMID: 36427785 DOI: 10.1016/j.jtct.2022.11.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/31/2022] [Accepted: 11/14/2022] [Indexed: 11/24/2022]
Abstract
Pulmonary complications after hematopoietic stem cell transplantation (HSCT) are important sources of morbidity and mortality. Improvements in infection-related complications have made noninfectious pulmonary complications an increasingly significant driver of transplantation-related mortality. Broadly, these complications can be characterized as either early or late complications, with idiopathic pneumonia syndrome and bronchiolitis obliterans syndrome the most prevalent early and late complications, respectively. Outcomes with historical treatment consisting mainly of corticosteroids are often poor, highlighting the need for a deeper understanding of these complications' underlying disease biology to guide the adoption of novel therapies that are being increasingly used in the modern era.
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Affiliation(s)
- Johnathan Fraebel
- Division of Hematology/Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Brian G Engelhardt
- Division of Hematology/Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Vanderbilt-Ingram Cancer Center, Nashville, Tennessee; Veterans Affairs Medical Center, Tennessee Valley Healthcare System, Nashville, Tennessee
| | - Tae Kon Kim
- Division of Hematology/Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Vanderbilt Center for Immunobiology, Nashville, Tennessee; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee; Vanderbilt-Ingram Cancer Center, Nashville, Tennessee; Veterans Affairs Medical Center, Tennessee Valley Healthcare System, Nashville, Tennessee.
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Nakamura N, Wada F, Kondo T, Aoki K, Arai Y, Mizumoto C, Kanda J, Kitawaki T, Yamashita K, Takaori-Kondo A. Significance of Omitting Day 11 Mini-Dose Methotrexate for GVHD Prophylaxis After Unrelated Bone Marrow Transplantation. Transplant Cell Ther 2023; 29:119.e1-119.e7. [PMID: 36372357 DOI: 10.1016/j.jtct.2022.11.006] [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: 08/20/2022] [Revised: 10/12/2022] [Accepted: 11/03/2022] [Indexed: 11/13/2022]
Abstract
The combination of calcineurin inhibitors and short-term methotrexate has been used as a standard graft-versus-host-disease (GVHD) prophylaxis in allogeneic hematopoietic stem cell transplantation. Mini-dose methotrexate (mini-MTX), consisting of 5 mg/m2/d on days 1, 3, 6, and 11, is occasionally selected as an alternative considering toxicity. The significance of day 11 administration remains unclear. We performed a retrospective study of 135 cases of unrelated bone marrow transplantation at our institute between 2006 and 2019 and compared the outcomes between day 11 MTX dose omitted (n = 72) and full-doses of mini-MTX (n = 63). In total cohort, the 4-year overall survival (OS) was 58.7 %, and the omitted group showed poor GVHD/relapse-free-survival (P = .01) with comparable OS (P = .11) and relapse-free survival (P = .11). Human leukocyte antigen (HLA) mismatch is a major risk factor for severe GVHD. We analyzed the impact of omitting day 11 MTX in 2 cohorts from HLA matched or mismatched donors. In both cohorts, the omitted group had a higher risk of severe acute and chronic GVHD. In conclusion, the omission of day 11 MTX was associated with a higher risk of severe GVHD. Therefore the omission of the day 11 dose is not recommended.
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Affiliation(s)
- Naokazu Nakamura
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Fumiya Wada
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tadakazu Kondo
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Department of Hematology, Kobe City Medical Center General Hospital, Kobe, Japan.
| | - Kazunari Aoki
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Stem Cell Genetics, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Yasuyuki Arai
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Department of Clinical Laboratory Medicine, Faculty of Medicine, Kyoto University, Kyoto, Japan
| | - Chisaki Mizumoto
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Junya Kanda
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Toshio Kitawaki
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kouhei Yamashita
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akifumi Takaori-Kondo
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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George B, Haque A, Sahu V, Joldoshova A, Singh Y, Quinones JE, George SK, Amin HM. Enhancing Antigen Retrieval to Unmask Signaling Phosphoproteins in Formalin-fixed Archival Tissues. Appl Immunohistochem Mol Morphol 2022; 30:333-339. [PMID: 35510772 PMCID: PMC9096965 DOI: 10.1097/pai.0000000000001022] [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: 08/10/2021] [Accepted: 02/18/2022] [Indexed: 11/25/2022]
Abstract
The introduction of targeted therapy has revolutionized cancer treatment. Nonetheless, for this approach to succeed, it is crucial to identify the targets, particularly when activated, in tumor tissues. Phosphorylation is a posttranslational modification that causes activation of numerous oncogenic protein kinases and transcription regulators. Hence, phosphoproteins is a class of biomarkers that has therapeutic and prognostic implications directly relevant to cancer patients' management. Despite the progress in histopathology methodology, analysis of the expression of phosphoproteins in tumor tissues still represents a challenge owing to preanalytical and analytical factors that include antigen retrieval strategies. In this study, we tested the hypothesis that optimizing antigen retrieval methods will improve phosphoproteins unmasking and enhance their immunohistochemical staining signal. We screened 4 antigen retrieval methods by using antibodies specific for 3 oncogenic phosphoproteins to stain human lymphoma tumors that were developed in severe combined immunodeficiency mice and subsequently fixed in formalin for 2 years. Then, we used antibodies specific for 15 survival phosphoproteins to compare the most effective method identified from our screening experiment to the antigen retrieval method that is most commonly utilized. Using the antigen retrieval buffer Tris-EDTA at pH 9.0 and heating for 45 minutes at 97°C unmasked and significantly enhanced the staining of 9 of the 15 phosphoproteins (P<0.0001). Our antigen retrieval approach is cost effective and feasible for clinical and research settings. We anticipate that combining this approach with the newly proposed methods to improve tissue fixation will further improve unmasking of phosphoproteins in human and animal tissues.
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Affiliation(s)
- Bhawana George
- Department of Hematopathology, Division of Pathology and Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Abedul Haque
- Department of Hematopathology, Division of Pathology and Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Vishal Sahu
- Department of Hematopathology, Division of Pathology and Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Albina Joldoshova
- Department of Hematopathology, Division of Pathology and Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yashandeep Singh
- Department of Hematopathology, Division of Pathology and Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Janet E. Quinones
- Pathology/Histology Laboratories, Division of Pathology and Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Suraj Konnath George
- Department of Hematopathology, Division of Pathology and Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Hesham M. Amin
- Department of Hematopathology, Division of Pathology and Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, Texas, USA
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Shandell MA, Capatina AL, Lawrence SM, Brackenbury WJ, Lagos D. Inhibition of the Na +/K +-ATPase by cardiac glycosides suppresses expression of the IDO1 immune checkpoint in cancer cells by reducing STAT1 activation. J Biol Chem 2022; 298:101707. [PMID: 35150740 PMCID: PMC8902613 DOI: 10.1016/j.jbc.2022.101707] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 12/18/2022] Open
Abstract
Despite extensive basic and clinical research on immune checkpoint regulatory pathways, little is known about the effects of the ionic tumor microenvironment on immune checkpoint expression and function. Here we describe a mechanistic link between Na+/K+-ATPase (NKA) inhibition and activity of the immune checkpoint protein indoleamine-pyrrole 2',3'-dioxygenase 1 (IDO1). We found that IDO1 was necessary and sufficient for production of kynurenine, a downstream tryptophan metabolite, in cancer cells. We developed a spectrophotometric assay to screen a library of 31 model ion transport-targeting compounds for potential effects on IDO1 function in A549 lung and MDA-MB-231 breast cancer cells. This revealed that the cardiac glycosides ouabain and digoxin inhibited kynurenine production at concentrations that did not affect cell survival. NKA inhibition by ouabain and digoxin resulted in increased intracellular Na+ levels and downregulation of IDO1 mRNA and protein levels, which was consistent with the reduction in kynurenine levels. Knockdown of ATP1A1, the ɑ1 subunit of the NKA and target of cardiac glycosides, increased Na+ levels to a lesser extent than cardiac glycoside treatment and did not affect IDO1 expression. However, ATP1A1 knockdown significantly enhanced the effect of cardiac glycosides on IDO1 expression and kynurenine production. Mechanistically, we show that cardiac glycoside treatment resulted in curtailing the length of phosphorylation-mediated stabilization of STAT1, a transcriptional regulator of IDO1 expression, an effect enhanced by ATP1A1 knockdown. Our findings reveal cross talk between ionic modulation via cardiac glycosides and immune checkpoint protein expression in cancer cells with broad mechanistic and clinical implications.
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Affiliation(s)
- Mia A Shandell
- Department of Biology, University of York, York, United Kingdom; Hull York Medical School, University of York, York, United Kingdom; York Biomedical Research Institute, University of York, York, United Kingdom
| | - Alina L Capatina
- Department of Biology, University of York, York, United Kingdom; York Biomedical Research Institute, University of York, York, United Kingdom
| | | | - William J Brackenbury
- Department of Biology, University of York, York, United Kingdom; York Biomedical Research Institute, University of York, York, United Kingdom
| | - Dimitris Lagos
- Hull York Medical School, University of York, York, United Kingdom; York Biomedical Research Institute, University of York, York, United Kingdom.
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Chen X, Xu J, Fang F, Xu Z, Tan Y, Chang J, Muyey DM, Wang H. The clinical characteristics and prognosis of Chinese acute myeloid leukemia patients with CSF3R mutations. Int J Lab Hematol 2021; 44:364-370. [PMID: 34818692 DOI: 10.1111/ijlh.13762] [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: 07/11/2021] [Revised: 10/16/2021] [Accepted: 10/25/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION The colony-stimulating factor 3 receptor (CSF3R) controls the proliferation of myeloid progenitors and differentiation into neutrophils. However, the clinical features and prognostic significance of CSF3R mutations in primary acute myeloid leukemia (AML) patients are still unclear. METHODS 158 newly diagnosed AML patients were retrospectively evaluated in our study. Amplicon-based next-generation sequencing (NGS) and multiplex-nested reverse-transcription polymerase chain reaction (RT-PCR) were used to investigate the 34 genes and 43 fusion genes associated with leukemia. In addition, clinical features, mutation incidence, and survival outcomes were compared between patients with CSF3R mutation and patients with wild-type CSF3R. RESULTS In our study, CSF3R mutations were found in 7.6% (12/158) cases. The membrane-proximal amino acid substitution T618I (58.3%) was the most frequent mutation. CSF3R mutations were associated with higher WBC counts (P = .035). CEBPA mutation, TET2 mutation, and RUNX1-RUNX1T1 translocation were the most common co-mutations of CSF3R. The CSF3R gene was mutually exclusive with signal transduction genes (P = .029), while positively associated with TET2 mutations (P = .014). CSF3R mutations had no effect on CR1 (P = .935), R (P = .625) and OS (P = .1172). Patients with CSF3R mutations had a worse DFS (P = .0352) than those with wild-type CSF3R. Multivariate survival analysis showed that CSF3R mutation was an independent risk factor for DFS of primary AML patients (HR=2.048, 95%CI: 1.006-4.170, P = .048). CONCLUSION AML patients with CSF3R mutations had unique clinical features and gene co-mutation spectrum. CSF3R mutation was an independent risk factor for DFS and could be a potential prognostic marker and therapeutic target for Chinese primary AML patients.
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Affiliation(s)
- Xiuhua Chen
- Shanxi Medical University, Taiyuan, China.,Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Jing Xu
- Shanxi Medical University, Taiyuan, China
| | - Fang Fang
- Shanxi Medical University, Taiyuan, China
| | - Zhifang Xu
- Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Yanhong Tan
- Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - JianMei Chang
- Shanxi Medical University, Taiyuan, China.,Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | | | - Hongwei Wang
- Shanxi Medical University, Taiyuan, China.,Institute of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
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Abstract
A considerable amount of continuous proliferation and differentiation is required to produce daily a billion new neutrophils in an adult human. Of the few cytokines and factors known to control neutrophil production, G-CSF is the guardian of granulopoiesis. G-CSF/CSF3R signaling involves the recruitment of non-receptor protein tyrosine kinases and their dependent signaling pathways of serine/threonine kinases, tyrosine phosphatases, and lipid second messengers. These pathways converge to activate the families of STAT and C/EBP transcription factors. CSF3R mutations are associated with human disorders of neutrophil production, including severe congenital neutropenia, neutrophilia, and myeloid malignancies. More than three decades after their identification, cloning, and characterization of G-CSF and G-CSF receptor, fundamental questions remain about their physiology.
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Affiliation(s)
- Hrishikesh M Mehta
- Departments of Cancer Biology and Pediatrics, Lerner Research Institute at the Cleveland Clinic, United States
| | - Seth J Corey
- Departments of Cancer Biology and Pediatrics, Lerner Research Institute at the Cleveland Clinic, United States.
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Martin KR, Wong HL, Witko-Sarsat V, Wicks IP. G-CSF - A double edge sword in neutrophil mediated immunity. Semin Immunol 2021; 54:101516. [PMID: 34728120 DOI: 10.1016/j.smim.2021.101516] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 10/23/2021] [Indexed: 11/15/2022]
Abstract
Neutrophils are vital for the innate immune system's control of pathogens and neutrophil deficiency can render the host susceptible to life-threatening infections. Neutrophil responses must also be tightly regulated because excessive production, recruitment or activation of neutrophils can cause tissue damage in both acute and chronic inflammatory diseases. Granulocyte colony stimulating factor (G-CSF) is a key regulator of neutrophil biology, from production, differentiation, and release of neutrophil precursors in the bone marrow (BM) to modulating the function of mature neutrophils outside of the BM, particularly at sites of inflammation. G-CSF acts by binding to its cognate cell surface receptor on target cells, causing the activation of intracellular signalling pathways mediating the proliferation, differentiation, function, and survival of cells in the neutrophil lineage. Studies in humans and mice demonstrate that G-CSF contributes to protecting the host against infection, but conversely, it can play a deleterious role in inflammatory diseases. As such, neutrophils and the G-CSF pathway may provide novel therapeutic targets. This review will focus on understanding the role G-CSF plays in the balance between effective neutrophil mediated host defence versus neutrophil-mediated inflammation and tissue damage in various inflammatory and infectious diseases.
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Affiliation(s)
- Katherine R Martin
- WEHI, 1G Royal Parade, Parkville, Victoria, 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Huon L Wong
- WEHI, 1G Royal Parade, Parkville, Victoria, 3052, Australia
| | | | - Ian P Wicks
- WEHI, 1G Royal Parade, Parkville, Victoria, 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, Australia.
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Zeiser R, Polverelli N, Ram R, Hashmi SK, Chakraverty R, Middeke JM, Musso M, Giebel S, Uzay A, Langmuir P, Hollaender N, Gowda M, Stefanelli T, Lee SJ, Teshima T, Locatelli F. Ruxolitinib for Glucocorticoid-Refractory Chronic Graft-versus-Host Disease. N Engl J Med 2021; 385:228-238. [PMID: 34260836 DOI: 10.1056/nejmoa2033122] [Citation(s) in RCA: 210] [Impact Index Per Article: 70.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Chronic graft-versus-host disease (GVHD), a major complication of allogeneic stem-cell transplantation, becomes glucocorticoid-refractory or glucocorticoid-dependent in approximately 50% of patients. Robust data from phase 3 randomized studies evaluating second-line therapy for chronic GVHD are lacking. In retrospective surveys, ruxolitinib, a Janus kinase (JAK1-JAK2) inhibitor, showed potential efficacy in patients with glucocorticoid-refractory or -dependent chronic GVHD. METHODS This phase 3 open-label, randomized trial evaluated the efficacy and safety of ruxolitinib at a dose of 10 mg twice daily, as compared with the investigator's choice of therapy from a list of 10 commonly used options considered best available care (control), in patients 12 years of age or older with moderate or severe glucocorticoid-refractory or -dependent chronic GVHD. The primary end point was overall response (complete or partial response) at week 24; key secondary end points were failure-free survival and improved score on the modified Lee Symptom Scale at week 24. RESULTS A total of 329 patients underwent randomization; 165 patients were assigned to receive ruxolitinib and 164 patients to receive control therapy. Overall response at week 24 was greater in the ruxolitinib group than in the control group (49.7% vs. 25.6%; odds ratio, 2.99; P<0.001). Ruxolitinib led to longer median failure-free survival than control (>18.6 months vs. 5.7 months; hazard ratio, 0.37; P<0.001) and higher symptom response (24.2% vs. 11.0%; odds ratio, 2.62; P = 0.001). The most common (occurring in ≥10% patients) adverse events of grade 3 or higher up to week 24 were thrombocytopenia (15.2% in the ruxolitinib group and 10.1% in the control group) and anemia (12.7% and 7.6%, respectively). The incidence of cytomegalovirus infections and reactivations was similar in the two groups. CONCLUSIONS Among patients with glucocorticoid-refractory or -dependent chronic GVHD, ruxolitinib led to significantly greater overall response, failure-free survival, and symptom response. The incidence of thrombocytopenia and anemia was greater with ruxolitinib. (Funded by Novartis and Incyte; REACH3 ClinicalTrials.gov number, NCT03112603.).
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Affiliation(s)
- Robert Zeiser
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Nicola Polverelli
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Ron Ram
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Shahrukh K Hashmi
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Ronjon Chakraverty
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Jan Moritz Middeke
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Maurizio Musso
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Sebastian Giebel
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Ant Uzay
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Peter Langmuir
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Norbert Hollaender
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Maanasa Gowda
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Tommaso Stefanelli
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Stephanie J Lee
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Takanori Teshima
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
| | - Franco Locatelli
- From the Department of Medicine I, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg (R.Z.), and Medizinische Klinik und Poliklinik I, Universitätsklinikum Dresden, Dresden (J.M.M.) - both in Germany; the Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences, ASST Spedali Civili di Brescia, University of Brescia, Brescia (N.P.), UOC di Oncoematologia e TMO, Dipartimento Oncologico "la Maddalena," Palermo (M.M.), and Dipartimento di Oncoematologia Pediatrica, IRCCS, Ospedale Pediatrico Bambino Gesu', Sapienza, Università di Roma, Rome (F.L.) - all in Italy; the BMT Unit, Tel Aviv (Sourasky) Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (R.R.); the Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia (S.K.H.); the Department of Medicine, Sheikh Shakhbout Medical City, Mayo Clinic, Abu Dhabi, United Arab Emirates (S.K.H.); UCL Cancer Institute, Institute of Immunity and Transplantation, London (R.C.); the Department of Bone Marrow Transplantation and Onco-Hematology, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Gliwice, Poland (S.G.); Acibadem University Hospital, Hematology Department, Istanbul, Turkey (A.U.); Incyte, Wilmington, DE (P.L.); Novartis Pharma, Basel, Switzerland (N.H., T.S.); Novartis Pharmaceuticals, East Hanover, NJ (M.G.); the Fred Hutchinson Cancer Research Center, Seattle (S.J.L.); and the Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan (T.T.)
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10
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Zou Y, Chen Z, Han H, Ruan S, Jin L, Zhang Y, Chen Z, Ma Z, Lou Q, Shi N, Jin H. Risk Signature Related to Immunotherapy Reaction of Hepatocellular Carcinoma Based on the Immune-Related Genes Associated With CD8 + T Cell Infiltration. Front Mol Biosci 2021; 8:602227. [PMID: 33816550 PMCID: PMC8017194 DOI: 10.3389/fmolb.2021.602227] [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: 09/03/2020] [Accepted: 02/11/2021] [Indexed: 01/10/2023] Open
Abstract
Background: Hepatocellular carcinoma (HCC) is the most common histological type of liver cancer, with an unsatisfactory long-term survival rate. Despite immune checkpoint inhibitors for HCC have got glories in recent clinical trials, the relatively low response rate is still a thorny problem. Therefore, there is an urgent need to screen biomarkers of HCC to predict the prognosis and efficacy of immunotherapy. Methods: Gene expression profiles of HCC were retrieved from TCGA, GEO, and ICGC databases while the immune-related genes (IRGs) were retrieved from the ImmPort database. CIBERSORT and WGCNA algorithms were combined to identify the gene module most related to CD8+ T cells in the GEO cohort. Subsequently, the genes in hub modules were subjected to univariate, LASSO, and multivariate Cox regression analyses in the TCGA cohort to develop a risk signature. Afterward, the accuracy of the risk signature was validated by the ICGC cohort, and its relationships with CD8+ T cell infiltration and PDL1 expression were explored. Results: Nine IRGs were finally incorporated into a risk signature. Patients in the high-risk group had a poorer prognosis than those in the low-risk group. Confirmed by TCGA and ICGC cohorts, the risk signature possessed a relatively high accuracy. Additionally, the risk signature was demonstrated as an independent prognostic factor and closely related to the CD8+ T cell infiltration and PDL1 expression. Conclusion: A risk signature was constructed to predict the prognosis of HCC patients and detect patients who may have a higher positive response rate to immune checkpoint inhibitors.
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Affiliation(s)
- Yiping Zou
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- College of Medicine, Shantou University, Shantou, China
| | - Zhihong Chen
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- College of Medicine, Shantou University, Shantou, China
| | - Hongwei Han
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Shiye Ruan
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Liang Jin
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yuanpeng Zhang
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Zhengrong Chen
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Zuyi Ma
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- College of Medicine, Shantou University, Shantou, China
| | - Qi Lou
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Ning Shi
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Haosheng Jin
- Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
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11
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Prognostic impact of CSF3R mutations in favorable risk childhood acute myeloid leukemia. Blood 2020; 135:1603-1606. [PMID: 32187354 DOI: 10.1182/blood.2019004179] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Truncation mutations in the granulocyte colony-stimulating factor receptor gene (CSF3R) are a rare abnormality in pediatric acute myeloid leukemia, and are usually associated either with mutations in CEBPA or with t(8;21). Through sequencing of over 2000 patients, the authors demonstrated that, although CSF3R mutations with associated t(8;21) still had an excellent response, CSF3R mutation abrogated the favorable risk of CEBPA mutation alone.
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12
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Naserian S, Leclerc M, Shamdani S, Uzan G. Current Preventions and Treatments of aGVHD: From Pharmacological Prophylaxis to Innovative Therapies. Front Immunol 2020; 11:607030. [PMID: 33391276 PMCID: PMC7773902 DOI: 10.3389/fimmu.2020.607030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 11/16/2020] [Indexed: 12/16/2022] Open
Abstract
Graft versus host disease (GVHD) is one of the main causes of mortality and the reason for up to 50% of morbidity after hematopoietic stem cell transplantations (HSCT) which is the treatment of choice for many blood malignancies. Thanks to years of research and exploration, we have acquired a profound understanding of the pathophysiology and immunopathology of these disorders. This led to the proposition and development of many therapeutic approaches during the last decades, some of them with very promising results. In this review, we have focused on the recent GVHD treatments from classical chemical and pharmacological prophylaxis to more innovative treatments including gene therapy and cell therapy, most commonly based on the application of a variety of immunomodulatory cells. Furthermore, we have discussed the advantages and potentials of cell-free therapy as a newly emerging approach to treat GVHD. Among them, we have particularly focused on the implication of the TNFα-TNFR2 axis as a new immune checkpoint signaling pathway controlling different aspects of many immunoregulatory cells.
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Affiliation(s)
- Sina Naserian
- INSERM UMR-S-MD 1197, Hôpital Paul Brousse, Villejuif, France
- Paris-Saclay University, Villejuif, France
- CellMedEx, Saint Maur Des Fossés, France
| | - Mathieu Leclerc
- Service d’Hématologie Clinique et de Thérapie Cellulaire, Hôpital Henri Mondor, Créteil, France
- INSERM U955, Institut Mondor de Recherche Biomédicale, Créteil, France
- Faculté de Médecine de Créteil, Université Paris-Est, Créteil, France
| | - Sara Shamdani
- INSERM UMR-S-MD 1197, Hôpital Paul Brousse, Villejuif, France
- Paris-Saclay University, Villejuif, France
- CellMedEx, Saint Maur Des Fossés, France
| | - Georges Uzan
- INSERM UMR-S-MD 1197, Hôpital Paul Brousse, Villejuif, France
- Paris-Saclay University, Villejuif, France
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13
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Maas-Bauer K, Kiote-Schmidt C, Bertz H, Apostolova P, Wäsch R, Ihorst G, Finke J, Zeiser R. Ruxolitinib-ECP combination treatment for refractory severe chronic graft-versus-host disease. Bone Marrow Transplant 2020; 56:909-916. [PMID: 33203951 DOI: 10.1038/s41409-020-01122-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 09/25/2020] [Accepted: 10/29/2020] [Indexed: 02/06/2023]
Abstract
Glucocorticoid-refractory (SR) chronic (c) graft-versus-host disease (GVHD) is a multisystem immunological disease and the leading cause of non-relapse mortality (NRM) in patients surviving longer than 2 years after allogeneic hematopoietic cell transplantation. Both ruxolitinib (RUX) and extracorporeal photopheresis (ECP) have shown activity for SR-cGVHD which motivated us to treat refractory cGHVD patients with the RUX-ECP combination. In this retrospective survey, 23 patients received RUX-ECP as salvage therapy for SR-cGVHD. The best response (CR or PR) at any time point during treatment was 74% (17/23) including 9% (2/23) CR and 65% (15/23) PR. The 24-months-survival was 75% (CI 56.0-94.1). Newly diagnosed cytopenia occurred in 22% (5/23) and CMV reactivation was observed in 26% (6/23) of the patients. Serum levels of soluble interleukin-2 receptor (sIL-2R) correlated with response. Our retrospective analysis shows that the RUX-ECP combination is safe and has activity in a fraction of patients with SR-cGVHD, which needs validation in a prospective trial.
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Affiliation(s)
- Kristina Maas-Bauer
- Department of Medicine I, Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany
| | - Chrissoula Kiote-Schmidt
- Department of Medicine I, Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany
| | - Hartmut Bertz
- Department of Medicine I, Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany
| | - Petya Apostolova
- Department of Medicine I, Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany
| | - Ralph Wäsch
- Department of Medicine I, Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany
| | - Gabriele Ihorst
- Clinical Trials Unit, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Jürgen Finke
- Department of Medicine I, Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany
| | - Robert Zeiser
- Department of Medicine I, Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany.
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14
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Metcalfe RD, Putoczki TL, Griffin MDW. Structural Understanding of Interleukin 6 Family Cytokine Signaling and Targeted Therapies: Focus on Interleukin 11. Front Immunol 2020; 11:1424. [PMID: 32765502 PMCID: PMC7378365 DOI: 10.3389/fimmu.2020.01424] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 06/02/2020] [Indexed: 12/12/2022] Open
Abstract
Cytokines are small signaling proteins that have central roles in inflammation and cell survival. In the half-century since the discovery of the first cytokines, the interferons, over fifty cytokines have been identified. Amongst these is interleukin (IL)-6, the first and prototypical member of the IL-6 family of cytokines, nearly all of which utilize the common signaling receptor, gp130. In the last decade, there have been numerous advances in our understanding of the structural mechanisms of IL-6 family signaling, particularly for IL-6 itself. However, our understanding of the detailed structural mechanisms underlying signaling by most IL-6 family members remains limited. With the emergence of new roles for IL-6 family cytokines in disease and, in particular, roles of IL-11 in cardiovascular disease, lung disease, and cancer, there is an emerging need to develop therapeutics that can progress to clinical use. Here we outline our current knowledge of the structural mechanism of signaling by the IL-6 family of cytokines. We discuss how this knowledge allows us to understand the mechanism of action of currently available inhibitors targeting IL-6 family cytokine signaling, and most importantly how it allows for improved opportunities to pharmacologically disrupt cytokine signaling. We focus specifically on the need to develop and understand inhibitors that disrupt IL-11 signaling.
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Affiliation(s)
- Riley D Metcalfe
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Technology Institute, The University of Melbourne, Parkville, VIC, Australia
| | - Tracy L Putoczki
- Personalised Oncology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, VIC, Australia
| | - Michael D W Griffin
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Technology Institute, The University of Melbourne, Parkville, VIC, Australia
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15
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Zhao X, Kawano SI, Masuda J, Murakami H. G-CSF-dependent neutrophil differentiation requires downregulation of MAPK activities through the Gab2 signaling pathway. Cell Biol Int 2020; 44:1919-1933. [PMID: 32437087 DOI: 10.1002/cbin.11398] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 04/26/2020] [Accepted: 05/18/2020] [Indexed: 11/08/2022]
Abstract
Granulocyte colony-stimulating factor (G-CSF) stimulation of myeloid cells induced tyrosine-phosphorylation of cellular proteins. One of the tyrosine-phosphorylated proteins was found to be a scaffold protein, Grb2-associated binding protein 2 (Gab2). Another member of Gab family protein, Gab3, was exogenously overexpressed in neutrophil progenitor cells to make the Gab3 protein to compete with the endogenous Gab2 for the G-CSF-dependent signaling. In Gab3-overexpressed cells, the level of tyrosine phosphorylation of endogenous Gab2 by G-CSF stimulation was markedly downregulated, while the phosphorylation of Gab3 was significantly enhanced. The Gab3-overexpressed cells continuously proliferated in the medium containing G-CSF and lost the ability to differentiate to the mature neutrophil, characterized by the lobulated nucleus. The G-CSF stimulation-dependent tyrosine phosphorylation of Gab3, the association of SHP2 to Gab3 and the following mitogen-activated protein kinase (MAPK) activation were prolonged in the Gab3-overexpressed cells, compared to the parental cells, where the binding of SHP2 to Gab2 protein and thereby the activation of MAPK were not sustained after G-CSF stimulation. Inhibition of MAPK by pharmaceutical inhibitor restored the Gab3-overexpressed cells to the ability to differentiate to mature neutrophil. Therefore, G-CSF-dependent Gab2 phosphorylation and following its downregulation led the short-term MAPK activation. The downregulation of MAPK after transient Gab2 phosphorylation was necessary for the consequent neutrophil differentiation induced by G-CSF stimulation.
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Affiliation(s)
- Xianglin Zhao
- Department of Biotechnology, Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
| | - Shun-Ichiro Kawano
- Department of Biotechnology, Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
| | - Junko Masuda
- Department of Interdisciplinary Science and Engineering in Health Systems, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan
| | - Hiroshi Murakami
- Department of Interdisciplinary Science and Engineering in Health Systems, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan
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16
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Ali H, Salhotra A, Modi B, Nakamura R. Ruxolitinib for the treatment of graft-versus-host disease. Expert Rev Clin Immunol 2020; 16:347-359. [DOI: 10.1080/1744666x.2020.1740592] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Haris Ali
- Department of Hematology/Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA, USA
| | - Amandeep Salhotra
- Department of Hematology/Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA, USA
| | - Badri Modi
- Department of Surgery, Division of Dermatology, City of Hope National Medical Center, Duarte, CA, USA
| | - Ryotaro Nakamura
- Department of Hematology/Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA, USA
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17
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Rocca S, Carrà G, Poggio P, Morotti A, Brancaccio M. Targeting few to help hundreds: JAK, MAPK and ROCK pathways as druggable targets in atypical chronic myeloid leukemia. Mol Cancer 2018; 17:40. [PMID: 29455651 PMCID: PMC5817721 DOI: 10.1186/s12943-018-0774-4] [Citation(s) in RCA: 18] [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: 10/27/2017] [Accepted: 02/01/2018] [Indexed: 12/19/2022] Open
Abstract
Atypical Chronic Myeloid Leukemia (aCML) is a myeloproliferative neoplasm characterized by neutrophilic leukocytosis and dysgranulopoiesis. From a genetic point of view, aCML shows a heterogeneous mutational landscape with mutations affecting signal transduction proteins but also broad genetic modifiers and chromatin remodelers, making difficult to understand the molecular mechanisms causing the onset of the disease. The JAK-STAT, MAPK and ROCK pathways are known to be responsible for myeloproliferation in physiological conditions and to be aberrantly activated in myeloproliferative diseases. Furthermore, experimental evidences suggest the efficacy of inhibitors targeting these pathways in repressing myeloproliferation, opening the way to deep clinical investigations. However, the activation status of these pathways is rarely analyzed when genetic mutations do not occur in a component of the signaling cascade. Given that mutations in functionally unrelated genes give rise to the same pathology, it is tempting to speculate that alteration in the few signaling pathways mentioned above might be a common feature of pathological myeloproliferation. If so, targeted therapy would be an option to be considered for aCML patients.
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Affiliation(s)
- Stefania Rocca
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Torino, Italy
| | - Giovanna Carrà
- Department of Clinical and Biological Sciences, University of Torino, 10043, Orbassano, Italy
| | - Pietro Poggio
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Torino, Italy
| | - Alessandro Morotti
- Department of Clinical and Biological Sciences, University of Torino, 10043, Orbassano, Italy
| | - Mara Brancaccio
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Torino, Italy.
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18
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Dhakal P, Gundabolu K, Amador C, Rayamajhi S, Bhatt VR. Atypical chronic myeloid leukemia: a rare entity with management challenges. Future Oncol 2017; 14:177-185. [PMID: 29226717 DOI: 10.2217/fon-2017-0334] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The aim of our study was to review the clinicopathologic features and management of atypical chronic myeloid leukemia (aCML). Relevant manuscripts published in English were searched using PubMed. aCML is diagnosed as per WHO 2016 classification in the presence of leukocytosis ≥13 × 109/l with circulating neutrophil precursors ≥10%, monocytes less than 10%, minimal basophils, hypercellular bone marrow with granulocytic proliferation and dysplasia, bone marrow blast less than 20% and absence of BCR/ABL fusion gene. Common cytogenetic features and mutations include trisomy 8, and mutations in SETBP1 and ETNK1. Median survival is 1-2 years. Hematopoietic stem cell transplant may be the only curative option. Ruxolitinib and dasatinib are emerging therapeutic options. Thus, aCML is a rare entity with poor survival. Novel therapies are needed.
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Affiliation(s)
- Prajwal Dhakal
- Department of Medicine, Michigan State University, 788 Service Rd, East Lansing, MI 48824, USA
| | - Krishna Gundabolu
- Department of Internal Medicine, Division of Hematology & Oncology, University of Nebraska Medical Center, NE 68198, USA
| | - Catalina Amador
- Department of Pathology & Microbiology, University of Nebraska Medical Center, NE 68198, USA
| | - Supratik Rayamajhi
- Department of Medicine, Michigan State University, 788 Service Rd, East Lansing, MI 48824, USA
| | - Vijaya Raj Bhatt
- Department of Internal Medicine, Division of Hematology & Oncology, University of Nebraska Medical Center, NE 68198, USA
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19
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Enhanced MAPK signaling is essential for CSF3R-induced leukemia. Leukemia 2016; 31:1770-1778. [PMID: 28031554 PMCID: PMC5537052 DOI: 10.1038/leu.2016.376] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 11/30/2016] [Accepted: 12/08/2016] [Indexed: 01/10/2023]
Abstract
Both membrane-proximal and truncation mutations in CSF3R have recently been reported to drive the onset of chronic neutrophilic leukemia (CNL). Here we show that although truncation mutation alone can not induce leukemia, both proximal and compound mutations (proximal and truncation mutations on same allele) are leukemogenic with a disease latency of 90 and 23 days, respectively. Comparative whole-genome expression profiling and biochemical experiments revealed that induced expression of Mapk adaptor protein Ksr1 and enhanced Mapk signaling are crucial to leukemogenesis by CSF3R proximal and compound mutants. Moreover, inhibition of Mek1/2 by trametinib alone is sufficient to suppress leukemia induced by both CSF3R proximal and ruxolitinib-resistant compound mutations. Together, these findings elucidate a Mapk-dependent mechanism of CSF3R-induced pathogenesis, and they establish the rationale for clinical evaluation of MEK1/2 inhibition in CNL.
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20
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Teshima T, Reddy P, Zeiser R. Reprint of: Acute Graft-versus-Host Disease: Novel Biological Insights. Biol Blood Marrow Transplant 2016; 22:S3-8. [PMID: 26899274 DOI: 10.1016/j.bbmt.2016.01.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 10/01/2015] [Indexed: 12/13/2022]
Abstract
Graft-versus-host disease (GVHD) continues to be a leading cause of morbidity and mortality after allogeneic hematopoietic stem cell transplantation. Recent insights into intestinal homeostasis and uncovering of new pathways and targets have greatly reconciled our understanding of GVHD pathophysiology and will reshape contemporary GVHD prophylaxis and treatment. Gastrointestinal (GI) GVHD is the major cause of mortality. Emerging data indicate that intestinal stem cells (ISCs) and their niche Paneth cells are targeted, resulting in dysregulation of the intestinal homeostasis and microbial ecology. The microbiota and their metabolites shape the immune system and intestinal homeostasis, and they may alter host susceptibility to GVHD. Protection of the ISC niche system and modification of the intestinal microbiota and metabolome to restore intestinal homeostasis may, thus, represent a novel approach to modulate GVHD and infection. Damage to the intestine plays a central role in amplifying systemic GVHD by propagating a proinflammatory cytokine milieu. Molecular targeting to inhibit kinase signaling may be a promising approach to treat GVHD, ideally via targeting the redundant effect of multiple cytokines on immune cells and enterocytes. In this review, we discuss insights on the biology of GI GVHD, interaction of microflora and metabolome with the hosts, identification of potential new target organs, and identification and targeting of novel T cell-signaling pathways. Better understanding of GVHD biology will, thus, pave a way to develop novel treatment strategies with great clinical benefits.
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Affiliation(s)
- Takanori Teshima
- Department of Hematology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
| | - Pavan Reddy
- Department of Internal Medicine, University of Michigan Comprehensive Cancer Center, Ann Arbor, Michigan
| | - Robert Zeiser
- Department of Hematology and Oncology, Freiburg University Medical Center, Albert-Ludwigs-University, Freiburg, Germany
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21
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Vaddi K, Verstovsek S, Kiladjian JJ. Ruxolitinib: a targeted treatment option for patients with polycythemia vera. BLOOD AND LYMPHATIC CANCER-TARGETS AND THERAPY 2016; 6:7-19. [PMID: 31360077 PMCID: PMC6467337 DOI: 10.2147/blctt.s101185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Polycythemia vera (PV) is a chronic myeloproliferative neoplasm characterized by erythrocytosis and the presence of Janus kinase (JAK) 2V617F or similar mutations. This review summarizes the pathophysiology of PV, the challenges associated with traditional treatment options, and the scientific rationale and supportive clinical evidence for targeted therapy with ruxolitinib. Accumulating evidence indicates that activating mutations in JAK2 drive the PV disease state. Traditional PV treatment strategies, including aspirin, phlebotomy, and cytoreductive agents such as hydroxyurea, provide clinical benefits for some but not all patients and may not adequately treat PV-related symptoms. Furthermore, traditional treatment approaches are associated with potential side effects that may limit their usage and lead some patients to discontinue the treatment. Ruxolitinib is an orally available small-molecule tyrosine kinase inhibitor that is a potent and selective inhibitor of JAK1/JAK2. Ruxolitinib is approved in the US for patients with PV with an inadequate response or intolerance to hydroxyurea and in Europe for adults with PV who are resistant to or intolerant of hydroxyurea. In the Phase III RESPONSE registration trial, ruxolitinib was superior to the best available therapy in patients with PV who were resistant to or intolerant of hydroxyurea in controlling hematocrit levels, reducing spleen volume, and improving PV-related symptoms and quality-of-life measures. The most common nonhematologic adverse events in ruxolitinib-treated patients were headache, diarrhea, pruritus, and fatigue in the RESPONSE trial; hematologic adverse events were primarily grade 1 or 2. In the Phase IIIb nonregistration RELIEF trial, there were nonsignificant trends toward an improved symptom control in patients with PV on a stable hydroxyurea dose who were generally well controlled but reported disease-associated symptoms and switched to ruxolitinib vs those who continued hydroxyurea therapy. Updated treatment guidelines will be important for educating physicians about the role of ruxolitinib in the treatment of patients with PV.
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Affiliation(s)
- Kris Vaddi
- Drug Discovery, Incyte Corporation, Wilmington, DE,
| | - Srdan Verstovsek
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jean-Jacques Kiladjian
- Clinical Investigations Center, Hôpital Saint-Louis et Université Paris Diderot, Paris, France
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22
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23
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Teshima T, Reddy P, Zeiser R. Acute Graft-versus-Host Disease: Novel Biological Insights. Biol Blood Marrow Transplant 2015; 22:11-6. [PMID: 26453971 DOI: 10.1016/j.bbmt.2015.10.001] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 10/01/2015] [Indexed: 12/22/2022]
Abstract
Graft-versus-host disease (GVHD) continues to be a leading cause of morbidity and mortality after allogeneic hematopoietic stem cell transplantation. Recent insights into intestinal homeostasis and uncovering of new pathways and targets have greatly reconciled our understanding of GVHD pathophysiology and will reshape contemporary GVHD prophylaxis and treatment. Gastrointestinal (GI) GVHD is the major cause of mortality. Emerging data indicate that intestinal stem cells (ISCs) and their niche Paneth cells are targeted, resulting in dysregulation of the intestinal homeostasis and microbial ecology. The microbiota and their metabolites shape the immune system and intestinal homeostasis, and they may alter host susceptibility to GVHD. Protection of the ISC niche system and modification of the intestinal microbiota and metabolome to restore intestinal homeostasis may, thus, represent a novel approach to modulate GVHD and infection. Damage to the intestine plays a central role in amplifying systemic GVHD by propagating a proinflammatory cytokine milieu. Molecular targeting to inhibit kinase signaling may be a promising approach to treat GVHD, ideally via targeting the redundant effect of multiple cytokines on immune cells and enterocytes. In this review, we discuss insights on the biology of GI GVHD, interaction of microflora and metabolome with the hosts, identification of potential new target organs, and identification and targeting of novel T cell-signaling pathways. Better understanding of GVHD biology will, thus, pave a way to develop novel treatment strategies with great clinical benefits.
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Affiliation(s)
- Takanori Teshima
- Department of Hematology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
| | - Pavan Reddy
- Department of Internal Medicine, University of Michigan Comprehensive Cancer Center, Ann Arbor, Michigan
| | - Robert Zeiser
- Department of Hematology and Oncology, Freiburg University Medical Center, Albert-Ludwigs-University, Freiburg, Germany
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24
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Myeloid-derived suppressor cells in B cell malignancies. Tumour Biol 2015; 36:7339-53. [DOI: 10.1007/s13277-015-4004-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 08/25/2015] [Indexed: 02/07/2023] Open
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25
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Zeiser R, Burchert A, Lengerke C, Verbeek M, Maas-Bauer K, Metzelder SK, Spoerl S, Ditschkowski M, Ecsedi M, Sockel K, Ayuk F, Ajib S, de Fontbrune FS, Na IK, Penter L, Holtick U, Wolf D, Schuler E, Meyer E, Apostolova P, Bertz H, Marks R, Lübbert M, Wäsch R, Scheid C, Stölzel F, Ordemann R, Bug G, Kobbe G, Negrin R, Brune M, Spyridonidis A, Schmitt-Gräff A, van der Velden W, Huls G, Mielke S, Grigoleit GU, Kuball J, Flynn R, Ihorst G, Du J, Blazar BR, Arnold R, Kröger N, Passweg J, Halter J, Socié G, Beelen D, Peschel C, Neubauer A, Finke J, Duyster J, von Bubnoff N. Ruxolitinib in corticosteroid-refractory graft-versus-host disease after allogeneic stem cell transplantation: a multicenter survey. Leukemia 2015; 29:2062-8. [PMID: 26228813 DOI: 10.1038/leu.2015.212] [Citation(s) in RCA: 397] [Impact Index Per Article: 44.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 07/23/2015] [Accepted: 07/24/2015] [Indexed: 12/15/2022]
Abstract
Despite major improvements in allogeneic hematopoietic cell transplantation over the past decades, corticosteroid-refractory (SR) acute (a) and chronic (c) graft-versus-host disease (GVHD) cause high mortality. Preclinical evidence indicates the potent anti-inflammatory properties of the JAK1/2 inhibitor ruxolitinib. In this retrospective survey, 19 stem cell transplant centers in Europe and the United States reported outcome data from 95 patients who had received ruxolitinib as salvage therapy for SR-GVHD. Patients were classified as having SR-aGVHD (n=54, all grades III or IV) or SR-cGVHD (n=41, all moderate or severe). The median number of previous GVHD-therapies was 3 for both SR-aGVHD (1-7) and SR-cGVHD (1-10). The overall response rate was 81.5% (44/54) in SR-aGVHD including 25 complete responses (46.3%), while for SR-cGVHD the ORR was 85.4% (35/41). Of those patients responding to ruxolitinib, the rate of GVHD-relapse was 6.8% (3/44) and 5.7% (2/35) for SR-aGVHD and SR-cGVHD, respectively. The 6-month-survival was 79% (67.3-90.7%, 95% confidence interval (CI)) and 97.4% (92.3-100%, 95% CI) for SR-aGVHD and SR-cGVHD, respectively. Cytopenia and cytomegalovirus-reactivation were observed during ruxolitinib treatment in both SR-aGVHD (30/54, 55.6% and 18/54, 33.3%) and SR-cGVHD (7/41, 17.1% and 6/41, 14.6%) patients. Ruxolitinib may constitute a promising new treatment option for SR-aGVHD and SR-cGVHD that should be validated in a prospective trial.
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Affiliation(s)
- R Zeiser
- Department of Hematology, Oncology and Stem Cell Transplantation, Freiburg University Medical Center, Freiburg, Germany
| | - A Burchert
- Department of Hematology, Oncology and Immunology, Philipps University Marburg, and University Medical Center Giessen and Marburg, Marburg, Germany
| | - C Lengerke
- Division of Hematology, University Hospital of Basel, Basel, Switzerland
| | - M Verbeek
- III Department of Internal Medicine, Technical University of Munich, Munich, Germany
| | - K Maas-Bauer
- Department of Hematology, Oncology and Stem Cell Transplantation, Freiburg University Medical Center, Freiburg, Germany
| | - S K Metzelder
- Department of Hematology, Oncology and Immunology, Philipps University Marburg, and University Medical Center Giessen and Marburg, Marburg, Germany
| | - S Spoerl
- III Department of Internal Medicine, Technical University of Munich, Munich, Germany
| | - M Ditschkowski
- Department of Bone Marrow Transplantation, West German Cancer Center, University Hospital Essen, Essen, Germany
| | - M Ecsedi
- Division of Hematology, University Hospital of Basel, Basel, Switzerland
| | - K Sockel
- Department of Hematology and Oncology, Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, Dresden, Germany
| | - F Ayuk
- Department of Stem Cell Transplantation, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - S Ajib
- Department of Internal Medicine II, University Hospital, Frankfurt/Main, Germany
| | - F S de Fontbrune
- Hematology Stem cell transplant Unit, Saint Louis Hospital, APHP, Paris, France
| | - I-K Na
- Department of Stem Cell Transplantation, Charité University Medicine Berlin, Berlin, Germany
| | - L Penter
- Department of Stem Cell Transplantation, Charité University Medicine Berlin, Berlin, Germany
| | - U Holtick
- Department of Internal Medicine I, University Hospital Cologne, Cologne, Germany
| | - D Wolf
- Medical Clinic III, Oncology, Hematology and Rheumatology, University Hospital Bonn (UKB), Bonn, Germany
| | - E Schuler
- Department of Hematology, Oncology and Clinical Immunology, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | - E Meyer
- Department of Bone Marrow Transplantation, Stanford University Medical School, Stanford, CA, USA
| | - P Apostolova
- Department of Hematology, Oncology and Stem Cell Transplantation, Freiburg University Medical Center, Freiburg, Germany
| | - H Bertz
- Department of Hematology, Oncology and Stem Cell Transplantation, Freiburg University Medical Center, Freiburg, Germany
| | - R Marks
- Department of Hematology, Oncology and Stem Cell Transplantation, Freiburg University Medical Center, Freiburg, Germany
| | - M Lübbert
- Department of Hematology, Oncology and Stem Cell Transplantation, Freiburg University Medical Center, Freiburg, Germany
| | - R Wäsch
- Department of Hematology, Oncology and Stem Cell Transplantation, Freiburg University Medical Center, Freiburg, Germany
| | - C Scheid
- Department of Internal Medicine I, University Hospital Cologne, Cologne, Germany
| | - F Stölzel
- Department of Hematology and Oncology, Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, Dresden, Germany
| | - R Ordemann
- Department of Hematology and Oncology, Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, Dresden, Germany
| | - G Bug
- Department of Internal Medicine II, University Hospital, Frankfurt/Main, Germany
| | - G Kobbe
- Department of Hematology, Oncology and Clinical Immunology, Universitätsklinikum Düsseldorf, Düsseldorf, Germany
| | - R Negrin
- Department of Bone Marrow Transplantation, Stanford University Medical School, Stanford, CA, USA
| | - M Brune
- Department of Internal Medicine, Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, Sweden
| | - A Spyridonidis
- Department of Bone Marrow Transplantation, Patras University Medical School, Patras, Greece
| | - A Schmitt-Gräff
- Department of Pathology, Freiburg University Medical Center, Freiburg, Germany
| | | | - G Huls
- Radboud University Medical Centre, Nijmegen, The Netherlands
| | - S Mielke
- Department of Hematology and Oncology, University Medical Centre Würzburg, Würzburg, Germany
| | - G U Grigoleit
- Department of Hematology and Oncology, University Medical Centre Würzburg, Würzburg, Germany
| | - J Kuball
- Department of Hematology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - R Flynn
- Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota, Minneapolis, MN, USA
| | - G Ihorst
- Clinical Trials Unit, Department of Hematology, Freiburg University Medical Center, Freiburg, Germany
| | - J Du
- Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota, Minneapolis, MN, USA
| | - B R Blazar
- Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota, Minneapolis, MN, USA
| | - R Arnold
- Department of Stem Cell Transplantation, Charité University Medicine Berlin, Berlin, Germany
| | - N Kröger
- Department of Stem Cell Transplantation, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - J Passweg
- Division of Hematology, University Hospital of Basel, Basel, Switzerland
| | - J Halter
- Division of Hematology, University Hospital of Basel, Basel, Switzerland
| | - G Socié
- Hematology Stem cell transplant Unit, Saint Louis Hospital, APHP, Paris, France
| | - D Beelen
- Department of Bone Marrow Transplantation, West German Cancer Center, University Hospital Essen, Essen, Germany
| | - C Peschel
- III Department of Internal Medicine, Technical University of Munich, Munich, Germany
| | - A Neubauer
- Department of Hematology, Oncology and Immunology, Philipps University Marburg, and University Medical Center Giessen and Marburg, Marburg, Germany
| | - J Finke
- Department of Hematology, Oncology and Stem Cell Transplantation, Freiburg University Medical Center, Freiburg, Germany
| | - J Duyster
- Department of Hematology, Oncology and Stem Cell Transplantation, Freiburg University Medical Center, Freiburg, Germany
| | - N von Bubnoff
- Department of Hematology, Oncology and Stem Cell Transplantation, Freiburg University Medical Center, Freiburg, Germany
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26
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Sano H, Ohki K, Park MJ, Shiba N, Hara Y, Sotomatsu M, Tomizawa D, Taga T, Kiyokawa N, Tawa A, Horibe K, Adachi S, Hayashi Y. CSF3R and CALR mutations in paediatric myeloid disorders and the association of CSF3R mutations with translocations, including t(8; 21). Br J Haematol 2015; 170:391-7. [PMID: 25858548 DOI: 10.1111/bjh.13439] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 02/04/2015] [Indexed: 02/03/2023]
Abstract
Mutations in the colony-stimulating factor 3 receptor (CSF3R) and calreticulin (CALR) genes have been reported in a proportion of adults with myeloproliferative disease. However, little is known about CSF3R or CALR mutations in paediatric myeloid disorders. We analysed CSF3R exons 14 and 17, and CALR exon 9, using direct sequencing in samples of paediatric acute myeloid leukaemia (AML; n = 521), juvenile myelomonocytic leukaemia (JMML; n = 40), myelodysplastic syndrome (MDS; n = 20) and essential thrombocythaemia (ET; n = 21). CSF3R mutations were found in 10 (1.2%) of 521 patients with AML; two in exon 14 (both missense mutations resulting in p.T618I) and eight in exon 17 (three frameshift mutations: p.S715X, p.Q774R, and p.S783Q; and five novel missense mutations: p.Q754K, p.R769H, p.L777F, p.T781I, and S795R). All of the patients with mutations in CSF3R exon 17 had chromosomal translocations, including four with t(8;21). At the time of reporting, seven of these ten patients are alive; three have died, due to side effects of chemotherapy. No CSF3R mutations were found in cases of MDS, JMML or ET. The only mutation found in the CALR gene was a frameshift (p.L367 fs) in one ET patient. We discuss the potential impact of these findings for the leukaemogenesis and clinical features of paediatric myeloid disorders.
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Affiliation(s)
- Hitoshi Sano
- Department of Haematology/Oncology, Gunma Children's Medical Centre, Shibukawa, Japan
| | - Kentaro Ohki
- Department of Haematology/Oncology, Gunma Children's Medical Centre, Shibukawa, Japan
| | - Myoung-Ja Park
- Department of Haematology/Oncology, Gunma Children's Medical Centre, Shibukawa, Japan
| | - Norio Shiba
- Department of Haematology/Oncology, Gunma Children's Medical Centre, Shibukawa, Japan.,Department of Paediatrics, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yusuke Hara
- Department of Haematology/Oncology, Gunma Children's Medical Centre, Shibukawa, Japan.,Department of Paediatrics, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Manabu Sotomatsu
- Department of Haematology/Oncology, Gunma Children's Medical Centre, Shibukawa, Japan
| | - Daisuke Tomizawa
- Division of Leukaemia and Lymphoma, Children's Cancer Centre, National Centre for Child Health and Development, Tokyo, Japan
| | - Takashi Taga
- Department of Paediatrics, Shiga University of Medical Science, Shiga, Japan
| | - Nobutaka Kiyokawa
- Department of Paediatric Haematology and Oncology Research National Research Institute for Child Health and Development, Tokyo, Japan
| | - Akio Tawa
- Department of Paediatrics, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Keizo Horibe
- Department of Paediatrics, National Hospital Organization Nagoya Medical Centre, Nagoya, Japan
| | - Souichi Adachi
- Department of Human Health Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yasuhide Hayashi
- Department of Haematology/Oncology, Gunma Children's Medical Centre, Shibukawa, Japan
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27
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Cui Y, Li B, Gale RP, Jiang Q, Xu Z, Qin T, Zhang P, Zhang Y, Xiao Z. CSF3R, SETBP1 and CALR mutations in chronic neutrophilic leukemia. J Hematol Oncol 2014; 7:77. [PMID: 25316523 PMCID: PMC4200198 DOI: 10.1186/s13045-014-0077-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 10/04/2014] [Indexed: 12/21/2022] Open
Abstract
The WHO 2008 definition of chronic neutrophilic leukemia (CNL) is based on clinical and laboratory parameters but not on molecular abnormalities. Mutations in CSF3R, SETBP1 and CALR are reported in patients with chronic neutrophilic leukemia (CNL). However, because CNL is rare, there are few large studies of this issue. We sequenced these genes in 14 patients who met the WHO-criteria of CNL. 8 subjects had CSF3R(T618I), 6 SETBP1 mutations and 1 a CALR mutation. Our data suggest mutation analysis of CSF3R, SETBP1 and CALR should be included in the diagnostic criteria for CNL. These data may also have therapy implications.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Zhijian Xiao
- MDS and MPN Centre, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 288 Nanjing Road, Tianjin 300020, China.
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28
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Liongue C, Ward AC. Granulocyte colony-stimulating factor receptor mutations in myeloid malignancy. Front Oncol 2014; 4:93. [PMID: 24822171 PMCID: PMC4013473 DOI: 10.3389/fonc.2014.00093] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 04/14/2014] [Indexed: 12/21/2022] Open
Abstract
Granulocyte colony-stimulating factor is a cytokine able to stimulate both myelopoiesis and hematopoietic stem cell mobilization, which has seen it used extensively in the clinic to aid hematopoietic recovery. It acts specifically via the homodimeric granulocyte colony-stimulating factor receptor (G-CSFR), which is principally expressed on the surface of myeloid and hematopoietic progenitor cells. A number of pathogenic mutations have now been identified in CSF3R, the gene encoding G-CSFR. These fall into distinct classes, each of which is associated with a particular spectrum of myeloid disorders, including malignancy. This review details the various CSF3R mutations, their mechanisms of action, and contribution to disease, as well as discussing the clinical implications of such mutations.
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Affiliation(s)
- Clifford Liongue
- School of Medicine, Deakin University , Geelong, VIC , Australia ; Strategic Research Centre in Molecular and Medical Research, Deakin University , Geelong, VIC , Australia
| | - Alister Curtis Ward
- School of Medicine, Deakin University , Geelong, VIC , Australia ; Strategic Research Centre in Molecular and Medical Research, Deakin University , Geelong, VIC , Australia
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29
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Trikha P, Carson WE. Signaling pathways involved in MDSC regulation. Biochim Biophys Acta Rev Cancer 2014; 1846:55-65. [PMID: 24727385 DOI: 10.1016/j.bbcan.2014.04.003] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 02/03/2014] [Accepted: 04/04/2014] [Indexed: 02/06/2023]
Abstract
The immune system has evolved mechanisms to protect the host from the deleterious effects of inflammation. The generation of immune suppressive cells like myeloid derived suppressor cells (MDSCs) that can counteract T cell responses represents one such strategy. There is an accumulation of immature myeloid cells or MDSCs in bone marrow (BM) and lymphoid organs under pathological conditions such as cancer. MDSCs represent a population of heterogeneous myeloid cells comprising of macrophages, granulocytes and dendritic cells that are at early stages of development. Although, the precise signaling pathways and molecular mechanisms that lead to MDSC generation and expansion in cancer remains to be elucidated. It is widely believed that perturbation of signaling pathways involved during normal hematopoietic and myeloid development under pathological conditions such as tumorogenesis contributes to the development of suppressive myeloid cells. In this review we discuss the role played by key signaling pathways such as PI3K, Ras, Jak/Stat and TGFb during myeloid development and how their deregulation under pathological conditions can lead to the generation of suppressive myeloid cells or MDSCs. Targeting these pathways should help in elucidating mechanisms that lead to the expansion of MDSCs in cancer and point to methods for eliminating these cells from the tumor microenvironment.
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Affiliation(s)
- Prashant Trikha
- Comprehensive Cancer Center, The Ohio State University, USA.
| | - William E Carson
- Comprehensive Cancer Center, The Ohio State University, USA; Department of Surgery, The Ohio State University, Columbus, OH 43210, USA.
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30
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Maxson JE, Luty SB, MacManiman JD, Abel ML, Druker BJ, Tyner JW. Ligand independence of the T618I mutation in the colony-stimulating factor 3 receptor (CSF3R) protein results from loss of O-linked glycosylation and increased receptor dimerization. J Biol Chem 2014; 289:5820-7. [PMID: 24403076 PMCID: PMC3937653 DOI: 10.1074/jbc.m113.508440] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 01/06/2014] [Indexed: 12/23/2022] Open
Abstract
Mutations in the CSF3 granulocyte colony-stimulating factor receptor CSF3R have recently been found in a large percentage of patients with chronic neutrophilic leukemia and, more rarely, in other types of leukemia. These CSF3R mutations fall into two distinct categories: membrane-proximal mutations and truncation mutations. Although both classes of mutation have exhibited the capacity for cellular transformation, several aspects of this transformation, including the kinetics, the requirement for ligand, and the dysregulation of downstream signaling pathways, have all been shown to be discrepant between the mutation types, suggesting distinct mechanisms of activation. CSF3R truncation mutations induce overexpression and ligand hypersensitivity of the receptor, likely because of the removal of motifs necessary for endocytosis and degradation. In contrast, little is known about the mechanism of activation of membrane-proximal mutations, which are much more commonly observed in chronic neutrophilic leukemia. In contrast with CSF3R truncation mutations, membrane-proximal mutations do not exhibit overexpression and are capable of signaling in the absence of ligand. We show that the Thr-615 and Thr-618 sites of membrane-proximal mutations are part of an O-linked glycosylation cluster. Mutation at these sites prevents O-glycosylation of CSF3R and increases receptor dimerization. This increased dimerization explains the ligand-independent activation of CSF3R membrane-proximal mutations. Cytokine receptor activation through loss of O-glycosylation represents a novel avenue of aberrant signaling. Finally, the combination of the CSF3R membrane proximal and truncation mutations, as has been reported in some patients, leads to enhanced cellular transformation when compared with either mutation alone, underscoring their distinct mechanisms of action.
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MESH Headings
- Amino Acid Substitution
- Animals
- Cell Line
- Female
- Glycosylation
- Humans
- Leukemia, Neutrophilic, Chronic/genetics
- Leukemia, Neutrophilic, Chronic/metabolism
- Leukemia, Neutrophilic, Chronic/pathology
- Ligands
- Mice
- Mice, Inbred BALB C
- Mutation, Missense
- Neoplasm Proteins/genetics
- Neoplasm Proteins/metabolism
- Protein Multimerization
- Receptors, Colony-Stimulating Factor/genetics
- Receptors, Colony-Stimulating Factor/metabolism
- Signal Transduction
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Affiliation(s)
- Julia E. Maxson
- From the Division of Hematology and Medical Oncology
- Knight Cancer Institute, and
| | - Samuel B. Luty
- From the Division of Hematology and Medical Oncology
- Knight Cancer Institute, and
| | - Jason D. MacManiman
- From the Division of Hematology and Medical Oncology
- Knight Cancer Institute, and
| | - Melissa L. Abel
- From the Division of Hematology and Medical Oncology
- the Howard Hughes Medical Institute, Portland, Oregon 97239
| | - Brian J. Druker
- From the Division of Hematology and Medical Oncology
- Knight Cancer Institute, and
- the Howard Hughes Medical Institute, Portland, Oregon 97239
| | - Jeffrey W. Tyner
- From the Division of Hematology and Medical Oncology
- Knight Cancer Institute, and
- Department of Cell and Developmental Biology, Oregon Health and Science University, Portland, Oregon 97239 and
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31
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Bortezomib inhibits STAT5-dependent degradation of LEF-1, inducing granulocytic differentiation in congenital neutropenia CD34(+) cells. Blood 2014; 123:2550-61. [PMID: 24394665 DOI: 10.1182/blood-2012-09-456889] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The transcription factor lymphoid enhancer-binding factor 1 (LEF-1), which plays a definitive role in granulocyte colony-stimulating factor (G-CSF) receptor-triggered granulopoiesis, is downregulated in granulocytic progenitors of severe congenital neutropenia (CN) patients. However, the exact mechanism of LEF-1 downregulation is unclear. CN patients are responsive to therapeutically high doses of G-CSF and are at increased risk of developing acute myeloid leukemia. The normal expression of LEF-1 in monocytes and lymphocytes, whose differentiation is unaffected in CN, suggests the presence of a granulopoiesis-specific mechanism downstream of G-CSF receptor signaling that leads to LEF-1 downregulation. Signal transducer and activator of transcription 5 (STAT5) is activated by G-CSF and is hyperactivated in acute myeloid leukemia. Here, we investigated the effects of activated STAT5 on LEF-1 expression and functions in hematopoietic progenitor cells. We demonstrated that constitutively active STAT5a (caSTAT5a) inhibited LEF-1-dependent autoregulation of the LEF-1 gene promoter by binding to the LEF-1 protein, recruiting Nemo-like kinase and the E3 ubiquitin-ligase NARF to LEF-1, leading to LEF-1 ubiquitination and a reduction in LEF-1 protein levels. The proteasome inhibitor bortezomib reversed the defective G-CSF-triggered granulocytic differentiation of CD34(+) cells from CN patients in vitro, an effect that was accompanied by restoration of LEF-1 protein levels and LEF-1 messenger RNA autoregulation. Taken together, our data define a novel mechanism of LEF-1 downregulation in CN patients via enhanced ubiquitination and degradation of LEF-1 protein by hyperactivated STAT5.
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32
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Systems approach to phagocyte production and activation: neutrophils and monocytes. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 844:99-113. [PMID: 25480639 DOI: 10.1007/978-1-4939-2095-2_6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Granulocyte differentiation and immune response function is a dynamic process governed by a highly coordinated transcriptional program that regulates cellular fate and function, often in a context-dependent manner. Advances in high-throughput technologies and bioinformatics have allowed us to better understand complex biological processes at the genomic and proteomic levels. Components of the environmental milieu, along with the molecular mechanisms that drive the development, activation, and regulation of granulocytes, have since been elucidated. In this chapter, we present the intricate network in which these elements come together and influence one another. In particular, we describe the critical roles of transcription factors like PU.1, CCAAT/enhancer-binding protein (C/EBPα; alpha), C/EBPε (epsilon), and growth factor independent-1 (Gfi-1). We also review granulocyte colony-stimulating factor (G-CSF) receptor-induced signal transduction pathways, their influence on proliferation and differentiation, and the cooperativity of cytokines and chemokines in this process.
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33
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Linossi EM, Chandrashekaran IR, Kolesnik TB, Murphy JM, Webb AI, Willson TA, Kedzierski L, Bullock AN, Babon JJ, Norton RS, Nicola NA, Nicholson SE. Suppressor of Cytokine Signaling (SOCS) 5 utilises distinct domains for regulation of JAK1 and interaction with the adaptor protein Shc-1. PLoS One 2013; 8:e70536. [PMID: 23990909 PMCID: PMC3749136 DOI: 10.1371/journal.pone.0070536] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 06/20/2013] [Indexed: 12/02/2022] Open
Abstract
Suppressor of Cytokine Signaling (SOCS)5 is thought to act as a tumour suppressor through negative regulation of JAK/STAT and epidermal growth factor (EGF) signaling. However, the mechanism/s by which SOCS5 acts on these two distinct pathways is unclear. We show for the first time that SOCS5 can interact directly with JAK via a unique, conserved region in its N-terminus, which we have termed the JAK interaction region (JIR). Co-expression of SOCS5 was able to specifically reduce JAK1 and JAK2 (but not JAK3 or TYK2) autophosphorylation and this function required both the conserved JIR and additional sequences within the long SOCS5 N-terminal region. We further demonstrate that SOCS5 can directly inhibit JAK1 kinase activity, although its mechanism of action appears distinct from that of SOCS1 and SOCS3. In addition, we identify phosphoTyr317 in Shc-1 as a high-affinity substrate for the SOCS5-SH2 domain and suggest that SOCS5 may negatively regulate EGF and growth factor-driven Shc-1 signaling by binding to this site. These findings suggest that different domains in SOCS5 contribute to two distinct mechanisms for regulation of cytokine and growth factor signaling.
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Affiliation(s)
- Edmond M. Linossi
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- The University of Melbourne, Parkville, Victoria, Australia
| | - Indu R. Chandrashekaran
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Tatiana B. Kolesnik
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- The University of Melbourne, Parkville, Victoria, Australia
| | - James M. Murphy
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- The University of Melbourne, Parkville, Victoria, Australia
| | - Andrew I. Webb
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- The University of Melbourne, Parkville, Victoria, Australia
| | - Tracy A. Willson
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- The University of Melbourne, Parkville, Victoria, Australia
| | - Lukasz Kedzierski
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- The University of Melbourne, Parkville, Victoria, Australia
| | - Alex N. Bullock
- Structural Genomics Consortium, University of Oxford, Oxford, United Kingdom
| | - Jeffrey J. Babon
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- The University of Melbourne, Parkville, Victoria, Australia
| | - Raymond S. Norton
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Nicos A. Nicola
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- The University of Melbourne, Parkville, Victoria, Australia
| | - Sandra E. Nicholson
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- The University of Melbourne, Parkville, Victoria, Australia
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34
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The new genetics of chronic neutrophilic leukemia and atypical CML: implications for diagnosis and treatment. Blood 2013; 122:1707-11. [PMID: 23896413 DOI: 10.1182/blood-2013-05-500959] [Citation(s) in RCA: 134] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Although activation of tyrosine kinase pathways is a shared theme among myeloproliferative neoplasms, the pathogenetic basis of chronic neutrophilic leukemia (CNL) has remained elusive. Recently, we identified high-frequency oncogenic mutations in the granulocyte-colony stimulating factor receptor (CSF3R) in CNL and in some patients with atypical chronic myeloid leukemia. Inhibition of Janus kinase 2 or SRC kinase signaling downstream of mutated CSF3R is feasible and should be explored therapeutically. Herein, we discuss the potential impact of these findings for the classification and treatment of these disorders.
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35
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Lee AS, Kim D, Wagle SR, Lee JE, Jung YJ, Kang KP, Lee S, Park SK, Kim W. Granulocyte colony-stimulating factor induces in vitro lymphangiogenesis. Biochem Biophys Res Commun 2013; 436:565-70. [DOI: 10.1016/j.bbrc.2013.05.062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 05/13/2013] [Indexed: 01/05/2023]
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36
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Nicola NA. A (selective) history of Australian involvement in cytokine biology. Cytokine Growth Factor Rev 2013; 24:179-87. [PMID: 23548178 PMCID: PMC3713160 DOI: 10.1016/j.cytogfr.2013.03.004] [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: 01/11/2013] [Accepted: 03/05/2013] [Indexed: 11/17/2022]
Abstract
This review focuses on contributions to cytokine biology made by Australians in Australia. It is clearly biased by my own experiences and selective recollections especially related to the colony-stimulating factors in which Australian involvement has been pre-eminent from discovery to clinical use. Nevertheless Australian scientists have also made profound contributions to other areas of cytokine and growth factor biology (including interferons, inflammatory cytokines, chemokines and epidermal, insulin-like and vascular endothelial growth factors) that are briefly described in this review as well as other chapters in this volume.
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Affiliation(s)
- Nicos A Nicola
- Walter and Eliza Hall Institute of Medical Research, 1G Royal Pde, Parkville, Vic 3052, Australia.
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37
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Nguyen-Jackson HT, Li HS, Zhang H, Ohashi E, Watowich SS. G-CSF-activated STAT3 enhances production of the chemokine MIP-2 in bone marrow neutrophils. J Leukoc Biol 2012; 92:1215-25. [PMID: 23024284 DOI: 10.1189/jlb.0312126] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Neutrophil mobilization from the bone marrow is a critical aspect of the innate immune response, enabling a rapid deployment of phagocytes to infected or inflamed tissue. The cytokine G-CSF, which is induced rapidly during infection, elicits a swift and potent mobilizing response, yet its mechanisms of action remain poorly understood. Here, we studied the role of G-CSF and its principal signal transducer STAT3 in regulating expression of the neutrophil chemoattractant MIP-2. Our studies revealed Gr-1(hi) mature neutrophils as major sources of Cxcl2 (MIP-2) mRNA in bone marrow and G-CSF-responsive MIP-2 protein production. Induction of Cxcl2 was regulated directly by G-CSF-activated STAT3 via interaction at a STAT consensus element in the Cxcl2 promoter. G-CSF coordinately stimulated the association of STAT3, induction of the transcriptionally active H3K4me3 modification, and recruitment of RNA Pol II at the Cxcl2 proximal promoter, as well as the promoter region of Il8rb, encoding the MIP-2 receptor. These results suggest that the G-CSF-STAT3 pathway directly regulates transcriptional events that induce neutrophil mobilization.
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Affiliation(s)
- Hoainam T Nguyen-Jackson
- Department of Immunology and Center for Inflammation and Cancer, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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38
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Bellucci R, Nguyen HN, Martin A, Heinrichs S, Schinzel AC, Hahn WC, Ritz J. Tyrosine kinase pathways modulate tumor susceptibility to natural killer cells. J Clin Invest 2012; 122:2369-83. [PMID: 22684105 PMCID: PMC3386806 DOI: 10.1172/jci58457] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Accepted: 05/02/2012] [Indexed: 12/13/2022] Open
Abstract
Natural killer (NK) cells are primary effectors of innate immunity directed against transformed tumor cells. In response, tumor cells have developed mechanisms to evade NK cell-mediated lysis through molecular mechanisms that are not well understood. In the present study, we used a lentiviral shRNA library targeting more than 1,000 human genes to identify 83 genes that promote target cell resistance to human NK cell-mediated killing. Many of the genes identified in this genetic screen belong to common signaling pathways; however, none of them have previously been known to modulate susceptibility of human tumor cells to immunologic destruction. Gene silencing of two members of the JAK family (JAK1 and JAK2) increased the susceptibility of a variety of tumor cell types to NK-mediated lysis and induced increased secretion of IFN-γ by NK cells. Treatment of tumor cells with JAK inhibitors also increased susceptibility to NK cell activity. These findings may have important clinical implications and suggest that small molecule inhibitors of tyrosine kinases being developed as therapeutic antitumor agents may also have significant immunologic effects in vivo.
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Affiliation(s)
- Roberto Bellucci
- Department of Medical Oncology, Dana-Farber Cancer Institute (DFCI), Boston, Massachusetts, USA.
Department of Medicine, Brigham and Woman’s Hospital, Boston, Massachusetts, USA.
Harvard Medical School, Boston, Massachusetts, USA.
Department of Pediatric Oncology,
Center for Cancer Genome Discovery, and
Cancer Vaccine Center, DFCI, Boston, Massachusetts, USA
| | - Hong-Nam Nguyen
- Department of Medical Oncology, Dana-Farber Cancer Institute (DFCI), Boston, Massachusetts, USA.
Department of Medicine, Brigham and Woman’s Hospital, Boston, Massachusetts, USA.
Harvard Medical School, Boston, Massachusetts, USA.
Department of Pediatric Oncology,
Center for Cancer Genome Discovery, and
Cancer Vaccine Center, DFCI, Boston, Massachusetts, USA
| | - Allison Martin
- Department of Medical Oncology, Dana-Farber Cancer Institute (DFCI), Boston, Massachusetts, USA.
Department of Medicine, Brigham and Woman’s Hospital, Boston, Massachusetts, USA.
Harvard Medical School, Boston, Massachusetts, USA.
Department of Pediatric Oncology,
Center for Cancer Genome Discovery, and
Cancer Vaccine Center, DFCI, Boston, Massachusetts, USA
| | - Stefan Heinrichs
- Department of Medical Oncology, Dana-Farber Cancer Institute (DFCI), Boston, Massachusetts, USA.
Department of Medicine, Brigham and Woman’s Hospital, Boston, Massachusetts, USA.
Harvard Medical School, Boston, Massachusetts, USA.
Department of Pediatric Oncology,
Center for Cancer Genome Discovery, and
Cancer Vaccine Center, DFCI, Boston, Massachusetts, USA
| | - Anna C. Schinzel
- Department of Medical Oncology, Dana-Farber Cancer Institute (DFCI), Boston, Massachusetts, USA.
Department of Medicine, Brigham and Woman’s Hospital, Boston, Massachusetts, USA.
Harvard Medical School, Boston, Massachusetts, USA.
Department of Pediatric Oncology,
Center for Cancer Genome Discovery, and
Cancer Vaccine Center, DFCI, Boston, Massachusetts, USA
| | - William C. Hahn
- Department of Medical Oncology, Dana-Farber Cancer Institute (DFCI), Boston, Massachusetts, USA.
Department of Medicine, Brigham and Woman’s Hospital, Boston, Massachusetts, USA.
Harvard Medical School, Boston, Massachusetts, USA.
Department of Pediatric Oncology,
Center for Cancer Genome Discovery, and
Cancer Vaccine Center, DFCI, Boston, Massachusetts, USA
| | - Jerome Ritz
- Department of Medical Oncology, Dana-Farber Cancer Institute (DFCI), Boston, Massachusetts, USA.
Department of Medicine, Brigham and Woman’s Hospital, Boston, Massachusetts, USA.
Harvard Medical School, Boston, Massachusetts, USA.
Department of Pediatric Oncology,
Center for Cancer Genome Discovery, and
Cancer Vaccine Center, DFCI, Boston, Massachusetts, USA
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Conzelmann N, Schneider A. A screen for peptide agonists of the G-CSF receptor. BMC Res Notes 2011; 4:194. [PMID: 21676239 PMCID: PMC3132715 DOI: 10.1186/1756-0500-4-194] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Accepted: 06/15/2011] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Granulocyte-colony stimulating factor (G-CSF) is one of the most important pharmacologically used proteins. Potential uses beyond the stimulation of neutrophilic granulocytes are the treatment of CNS disorders. Disadvantages of the G-CSF protein as a drug are its moderate plasma half-life time and considerable production costs. We therefore conducted a screen for peptide agonists derived from the sequence of human G-CSF. FINDINGS Despite of the high sensitivity of our screening system we could not detect any positive hits in a single peptide approach. In a multiplex approach using a permutation of any combination of 10 different peptides we could also not detect a positive block. CONCLUSIONS We conclude that larger coherent parts of the protein or dimerising peptides may be needed to achieve activation of the receptor.
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Affiliation(s)
- Nadine Conzelmann
- SYGNIS Bioscience, Im Neuenheimer Feld 515, 69120 Heidelberg, Germany.
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Siggins RW, Melvan JN, Welsh DA, Bagby GJ, Nelson S, Zhang P. Alcohol suppresses the granulopoietic response to pulmonary Streptococcus pneumoniae infection with enhancement of STAT3 signaling. THE JOURNAL OF IMMUNOLOGY 2011; 186:4306-13. [PMID: 21357267 DOI: 10.4049/jimmunol.1002885] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Enhanced granulopoietic activity is crucial for host defense against bacterial pneumonia. Alcohol impairs this response. The underlying mechanisms remain obscure. G-CSF produced by infected lung tissue plays a key role in stimulating bone marrow granulopoiesis. This study investigated the effects of alcohol on G-CSF signaling in the regulation of marrow myeloid progenitor cell proliferation in mice with Streptococcus pneumoniae pneumonia. Chronic alcohol consumption plus acute alcohol intoxication suppressed the increase in blood granulocyte counts following intrapulmonary challenge with S. pneumoniae. This suppression was associated with a significant decrease in bone marrow granulopoietic progenitor cell proliferation. Alcohol treatment significantly enhanced STAT3 phosphorylation in bone marrow cells of animals challenged with S. pneumoniae. In vitro experiments showed that G-CSF-induced activation of STAT3-p27(Kip1) pathway in murine myeloid progenitor cell line 32D-G-CSFR cells was markedly enhanced by alcohol exposure. Alcohol dose dependently inhibited G-CSF-stimulated 32D-G-CSFR cell proliferation. This impairment of myeloid progenitor cell proliferation was not attenuated by inhibition of alcohol metabolism through either the alcohol dehydrogenase pathway or the cytochrome P450 system. These data suggest that alcohol enhances G-CSF-associated STAT3-p27(Kip1) signaling, which impairs granulopoietic progenitor cell proliferation by inducing cell cycling arrest and facilitating their terminal differentiation during the granulopoietic response to pulmonary infection.
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Affiliation(s)
- Robert W Siggins
- Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
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41
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Smit LS, Meyer DJ, Argetsinger LS, Schwartz J, Carter‐Su C. Molecular Events in Growth Hormone–Receptor Interaction and Signaling. Compr Physiol 2011. [DOI: 10.1002/cphy.cp070514] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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42
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Sur R, Hall J, Cavender D, Malaviya R. Role of Janus kinase-2 in IgE receptor-mediated leukotriene C4 production by mast cells. Biochem Biophys Res Commun 2009; 390:786-90. [DOI: 10.1016/j.bbrc.2009.10.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2009] [Accepted: 10/10/2009] [Indexed: 11/28/2022]
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43
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Teodorczyk M, Martin-Villalba A. Sensing invasion: cell surface receptors driving spreading of glioblastoma. J Cell Physiol 2009; 222:1-10. [PMID: 19688773 DOI: 10.1002/jcp.21901] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Glioblastoma multiforme (GBM) is the most common malignant brain tumour in adults. One main source of its high malignancy is the invasion of isolated tumour cells into the surrounding parenchyma, which makes surgical resection an insufficient therapy in nearly all cases. The invasion is triggered by several cell surface receptors including receptor tyrosine kinases (RTKs), G protein-coupled receptors (GPCRs), TGF-beta receptor, integrins, immunoglobulins, tumour necrosis factor (TNF) family, cytokine receptors, and protein tyrosine phosphatase receptors. The cross-talk between cell-surface receptors and the redundancy of downstream effectors make analysis of invasive signals even more complex. Therapies involving inhibition of single receptors do not give promising outcomes and a thorough knowledge of invasive signals of common and exclusive signalling components is required for design of best combinatory treatment schemes to fight the disease.
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Affiliation(s)
- Marcin Teodorczyk
- Molecular Neurobiology Group, German Cancer Research Center (DKFZ), Heidelberg, Germany
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44
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Kimura A, Sultana TA. Granulocyte Colony-Stimulating Factor Receptors on CD34++Cells in Patients with Myelodysplastic Syndrome (MDS) and MDS-Acute Myeloid Leukemia. Leuk Lymphoma 2009; 45:1995-2000. [PMID: 15370243 DOI: 10.1080/10428190410001714034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We studied surface expression of granulocyte colony-stimulating factor receptor (G-CSFR) on CD34++ progenitor cells of myelodysplastic patients. Late stages of disease showed a higher proportion of high or low G-CSFR expression than early stages. Most of the patients with the low expression had neutropenia. Neutropenia was relatively less present in the normal group, but it reappeared in the high group. All the neutropenic patients in the high group showed response to G-CSF, while response in the normal group was minor. These findings suggest that lowered expression of G-CSFR leads to neutropenia in myelodysplastic patients. This article reviewed the knowledge of the G-CSFR and its role in the disorders of granulopoiesis, including myelodysplastic syndrome (MDS).
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Affiliation(s)
- Akiro Kimura
- Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Kasumi, Minami-ku, Japan.
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45
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Abstract
Although the role of Jak3 in lymphoid development has been well-characterized, increasing evidence demonstrates that activation of the Jak3 pathway plays an important role in myeloid differentiation as well. Overexpression of Jak3 in murine myeloid 32Dcl3 cells has been shown to result in an acceleration of granulocytic differentiation induced by G-CSF. Early onset of G1 cell cycle arrest along with upregulation of the cyclin dependent kinase inhibitor p27Kip1 and downregulation of Cdk2, Cdk4, Cdk6, and Cyclin E has also been observed in Jak3-overexpressing 32Dcl3 cells. In addition, Jak3 overexpression in normal mouse bone marrow cells results in accelerated granulocytic and monocytic differentiation in response to GM-CSF, while pharmacological inhibition of Jak3 results in a block to GM-CSF-induced colony formation in normal mouse bone marrow cells. Jak3 is unique among the members of the Jak kinase family in that it is inducibly expressed and is a target for regulation at the level of transcription. Recent studies have demonstrated that upregulation of Jak3 during myeloid differentiation is achieved through the cooperative action of Sp1 and STAT3, consistent with evidence indicative of a crucial role for STAT3 in myeloid differentiation. These results suggest that cytokine-inducible activation of Jak3 plays a critical role in integrating the processes of growth arrest and differentiation of myeloid cells.
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Affiliation(s)
- James K Mangan
- Fels Institute for Cancer Research and Molecular Biology, Temple University School of Medicine, Philadephia, PA 19140, USA
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46
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Boyle K, Zhang JG, Nicholson SE, Trounson E, Babon JJ, McManus EJ, Nicola NA, Robb L. Deletion of the SOCS box of suppressor of cytokine signaling 3 (SOCS3) in embryonic stem cells reveals SOCS box-dependent regulation of JAK but not STAT phosphorylation. Cell Signal 2008; 21:394-404. [PMID: 19056487 DOI: 10.1016/j.cellsig.2008.11.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2008] [Accepted: 11/06/2008] [Indexed: 11/30/2022]
Abstract
The mechanism by which Suppressor of Cytokine Signaling-3 (SOCS3) negatively regulates cytokine signaling has been widely investigated using over-expression studies in cell lines and is thought to involve interactions with both the gp130 receptor and JAK1. Here, we compare the endogenous JAK/STAT signaling pathway downstream of Leukemia Inhibitory Factor (LIF) signaling in wild type (WT) Embryonic Stem (ES) cells and in ES cells lacking either the entire Socs3 gene or bearing a truncated form of SOCS3 (SOCS3DeltaSB) lacking the C-terminal SOCS box motif (SOCS3(DeltaSB/DeltaSB)). In SOCS3(DeltaSB/DeltaSB) cells phosphorylated JAK1 accumulated at much higher levels than in WT cells or even cells lacking SOCS3 (SOCS3(-/-)). In contrast enhanced activation of STAT3 and SHP2 was seen in SOCS3(-/-) cells. Size exclusion chromatography of cell extracts showed that in unstimulated cells, JAK1 was exclusively associated with receptors but following cytokine stimulation hyperphosphorylated JAK1 (pJAK1) appeared to dissociate from the receptor complex in a manner independent of SOCS3. In WT and SOCS3(DeltaSB/DeltaSB) cells SOCS3 was associated with pJAK1. The data suggest that dissociation of activated JAK1 from the receptor results in separate targeting of JAK1 for proteasomal degradation through a mechanism dependent on the SOCS3 SOCS box thus preventing further activation of STAT3.
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Affiliation(s)
- Kristy Boyle
- The Walter and Eliza Hall Institute, 1G Royal Parade, Parkville, Victoria 3050, Australia
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47
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Wang L, Xue J, Zadorozny EV, Robinson LJ. G-CSF stimulates Jak2-dependent Gab2 phosphorylation leading to Erk1/2 activation and cell proliferation. Cell Signal 2008; 20:1890-9. [PMID: 18644434 PMCID: PMC2788816 DOI: 10.1016/j.cellsig.2008.06.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2008] [Accepted: 06/27/2008] [Indexed: 01/17/2023]
Abstract
Granulocyte colony-stimulating factor (G-CSF), the major cytokine regulator of neutrophilic granulopoiesis, stimulates both the proliferation and differentiation of myeloid precursors. A variety of signaling proteins have been identified as mediators of G-CSF signaling, but understanding of their specific interactions and organization into signaling pathways for particular cellular effects is incomplete. The present study examined the role of the scaffolding protein Grb2-associated binding protein-2 (Gab2) in G-CSF signaling. We found that a chemical inhibitor of Janus kinases inhibited G-CSF-stimulated Gab2 phosphorylation. Transfection with Jak2 antisense and dominant negative constructs also inhibited Gab2 phosphorylation in response to G-CSF. In addition, G-CSF enhanced the association of Jak2 with Gab2. In vitro, activated Jak2 directly phosphorylated specific Gab2 tyrosine residues. Mutagenesis studies revealed that Gab2 tyrosine 643 (Y643) was a major target of Jak2 in vitro, and a key residue for Jak2-dependent phosphorylation in intact cells. Mutation of Gab2 Y643 inhibited G-CSF-stimulated Erk1/2 activation and Shp2 binding to Gab2. Loss of Y643 also inhibited Gab2-mediated G-CSF-stimulated cell proliferation. Together, these results identify a novel signaling pathway involving Jak2-dependent Gab2 phosphorylation leading to Erk1/2 activation and cell proliferation in response to G-CSF.
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Affiliation(s)
- Lin Wang
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA
| | - Jia Xue
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA
| | - Eva V. Zadorozny
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA
| | - Lisa J. Robinson
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA
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48
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Marino VJ, Roguin LP. The granulocyte colony stimulating factor (G-CSF) activates Jak/STAT and MAPK pathways in a trophoblastic cell line. J Cell Biochem 2008; 103:1512-23. [PMID: 17879956 DOI: 10.1002/jcb.21542] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Granulocyte colony-stimulating factor receptor (G-CSFR) has been found in placenta tissues, although its functional role has not yet been defined. In order to explore the molecular pathways induced by G-CSF in this tissue, we first reveal the presence of G-CSFR in the JEG-3 human trophoblastic cell line and then examined the phosphorylation of Janus tyrosine kinases (Jak), signal transducers and activators of transcription (STAT) proteins and mitogen-activated protein kinases (MAPK) after G-CSF binding to receptors. We showed that Jak1, Jak2, Tyk2, and STAT3 were phosphorylated after incubation with G-CSF. Phosphorylation of p38 and p44/42 MAPK was also activated by G-CSF, and specifically blocked in the presence of the corresponding inhibitors. Similar intracellular pathways were induced by G-CSF in a myeloid leukemia NFS-60 cell line that was studied in parallel. Conversely to cytokine action in myeloid cells, G-CSF did not induce a proliferative response in JEG-3 cells. When the effect of G-CSF on cellular viability was evaluated, cytokine-stimulated JEG-3 cells were protected from foetal serum starvation. In addition, when JEG-3 cells deprived of serum were incubated at different times in the presence of G-CSF, a progressive decrease in the percentage of hypodiploid cells was observed. In summary, we identified the molecular pathways activated after G-CSF binding to trophoblastic cell receptors and showed that G-CSF behaved as a protective cytokine, which supports JEG-3 cells survival.
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Affiliation(s)
- Verónica Julieta Marino
- Instituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Facultad de Farmacia y Bioquímica, Buenos Aires, Argentina
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49
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Abstract
The Janus family of non-receptor tyrosine kinases (JAK1, JAK2, JAK3 and tyrosine kinase 2) transduces signals downstream of type I and II cytokine receptors via signal transducers and activators of transcription (STATs). JAK3 is important in lymphoid and JAK2 in myeloid cell proliferation and differentiation. The thrombopoietin receptor MPL is one of several JAK2 cognate receptors and is essential for myelopoiesis in general and megakaryopoiesis in particular. Germline loss-of-function (LOF) JAK3 and MPL mutations cause severe combined immunodeficiency and congenital amegakaryocytic thrombocytopenia, respectively. Germline gain-of-function (GOF) MPL mutation (MPLS505N) causes familial thrombocytosis. Somatic JAK3 (e.g. JAK3A572V, JAK3V722I, JAK3P132T) and fusion JAK2 (e.g. ETV6-JAK2, PCM1-JAK2, BCR-JAK2) mutations have respectively been described in acute megakaryocytic leukemia and acute leukemia/chronic myeloid malignancies. However, current attention is focused on JAK2 (e.g. JAK2V617F, JAK2 exon 12 mutations) and MPL (e.g. MPLW515L/K/S, MPLS505N) mutations associated with myeloproliferative neoplasms (MPNs). A JAK2 mutation, primarily JAK2V617F, is invariably associated with polycythemia vera (PV). The latter mutation also occurs in the majority of patients with essential thrombocythemia (ET) or primary myelofibrosis (PMF). MPL mutational frequency in MPNs is substantially less (<10%). In general, despite a certain degree of genotype - phenotype correlations, the prognostic relevance of harbouring one of these mutations, or their allele burden when present, remains dubious. Regardless, based on the logical assumption that amplified JAK-STAT signalling is central to the pathogenesis of PV, ET and PMF, several anti-JAK2 tyrosine kinase inhibitors have been developed and are currently being tested in humans with these disorders.
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Affiliation(s)
- Ayalew Tefferi
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
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50
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Panopoulos AD, Watowich SS. Granulocyte colony-stimulating factor: molecular mechanisms of action during steady state and 'emergency' hematopoiesis. Cytokine 2008; 42:277-88. [PMID: 18400509 DOI: 10.1016/j.cyto.2008.03.002] [Citation(s) in RCA: 269] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2007] [Revised: 02/14/2008] [Accepted: 03/03/2008] [Indexed: 01/13/2023]
Abstract
Neutrophils are phagocytes whose principal function is to maintain anti-bacterial immunity. Neutrophils ingest and kill invading bacteria, releasing cytotoxic, chemotactic and inflammatory mediators at sites of infection. This serves to control the immediate host immune response and attract other cells, such as macrophages and dendritic cells, which are important for establishing long-term adaptive immunity. Neutrophils thus contribute to both the initiation and the maintenance of inflammation at sites of infection. Aberrant neutrophil activity is deleterious; suppressed responses can cause extreme susceptibility to infection while overactivation can lead to excessive inflammation and tissue damage. This review will focus on neutrophil regulation by granulocyte colony-stimulating factor (G-CSF), the principal cytokine controlling neutrophil development and function. The review will emphasize the molecular aspects of G-CSF-driven granulopoiesis in steady state (healthy) conditions and during demand-driven or 'emergency' conditions elicited by infection or clinical administration of G-CSF. Understanding the molecular control of granulopoiesis will aid in the development of new approaches designed to treat disorders of neutrophil production and function.
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Affiliation(s)
- Athanasia D Panopoulos
- Department of Immunology and Center for Cancer Immunology Research, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, PO Box 301402, Unit 902, Houston, TX 77030, USA
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