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Asai H, Kato K, Miyasaka M, Hatsukawa K, Murakami N, Takeda N, Abe J, Aoyagi Y, Kohda Y, Gui MY, Jin YR, Li XW, Hitotsuyanagi Y, Takeya K, Andoh T, Kurosaki H, Fukuishi N. Kamebakaurin Suppresses Antigen-Induced Mast Cell Activation by Inhibition of FcεRI Signaling Pathway. Int Arch Allergy Immunol 2024:1-12. [PMID: 38797160 DOI: 10.1159/000536334] [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: 11/01/2023] [Accepted: 01/09/2024] [Indexed: 05/29/2024] Open
Abstract
INTRODUCTION Kamebakaurin is an active constituent of both Rabdosia japonica and Rabdosia excisa, which are utilized in Chinese traditional medicine for improving symptoms in patients with allergies. We investigated the molecular mechanisms of the anti-allergic effects of kamebakaurin using BMMCs. METHODS The degranulation ratio, histamine release, and the interleukin (IL)-4, leukotriene B4 (LTB4), and cysteinyl leukotriene productions on antigen-triggered BMMC were investigated. Additionally, the effects of kamebakaurin on signal transduction proteins were examined by Western blot and binding to the Syk and Lyn kinase domain was calculated. The effects of kamebakaurin on antigen-induced hyperpermeability were investigated using mouse model. RESULTS At 10 μm, kamebakaurin partially inhibited degranulation, histamine release, and IL-4 production. At 30 μm, kamebakaurin partially reduced LTB4 and cysteinyl leukotriene productions and suppressed degranulation, histamine release, and IL-4 production. Phosphorylation of both Syk Y519/520 and its downstream protein, Gab2, was reduced by kamebakaurin, and complete inhibition was observed with 30 μm kamebakaurin. In contrast, phosphorylation of Erk was only partially inhibited, even in the presence of 30 μm kamebakaurin. Syk Y519/520 is known to be auto-phosphorylated via intramolecular ATP present in its own ATP-binding site, and this auto-phosphorylation triggers degranulation, histamine release, and IL-4 production. Docking simulation study indicated kamebakaurin blocked ATP binding to the ATP-binding site in Syk. Therefore, inhibition of Syk auto-phosphorylation by kamebakaurin binding to the Syk ATP-binding site appeared to cause a reduction of histamine release and IL-4 production. Kamebakaurin inhibited antigen-induced vascular hyperpermeability in a dose-dependent fashion but did not reduce histamine-induced vascular hyperpermeability. CONCLUSION Kamebakaurin ameliorates allergic symptoms via inhibition of Syk phosphorylation; thus, kamebakaurin could be a lead compound for the new anti-allergic drug.
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Affiliation(s)
- Haruka Asai
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan,
| | - Koichi Kato
- Department of Pharmacotherapeutics, Faculty of Pharmaceutical Sciences, Shonan University of Medical Sciences, Yokohama, Japan
| | - Mayu Miyasaka
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan
| | - Kaho Hatsukawa
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan
| | - Nanami Murakami
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan
| | - Naoko Takeda
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan
| | - Junna Abe
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan
| | - Yutaka Aoyagi
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan
- Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences, Kinjo Gakuin University, Nagoya, Japan
| | - Yuka Kohda
- Department of Pharmacotherapeutics, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Ming-Yu Gui
- Department of Chemistry, Jilin University, Jilin, China
| | - Yong-Ri Jin
- Department of Chemistry, Jilin University, Jilin, China
| | - Xu-Wen Li
- Department of Chemistry, Jilin University, Jilin, China
| | - Yukio Hitotsuyanagi
- School of Pharmacy, Tokyo University of Pharmacy and Life Science, Tokyo, Japan
| | - Koichi Takeya
- School of Pharmacy, Tokyo University of Pharmacy and Life Science, Tokyo, Japan
| | - Tsugunobu Andoh
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan
- Department of Pharmacology and Pathophysiology, Graduate School of Pharmaceutical Sciences, Kinjo Gakuin University, Nagoya, Japan
| | - Hiromasa Kurosaki
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan
- Department of Analytical Chemistry, Graduate School of Pharmaceutical Sciences, Kinjo Gakuin University, Nagoya, Japan
| | - Nobuyuki Fukuishi
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kinjo Gakuin University, Nagoya, Japan
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Asai H, Kato K, Suzuki M, Takahashi M, Miyata E, Aoi M, Kumazawa R, Nagashima F, Kurosaki H, Aoyagi Y, Fukuishi N. Potential Anti-allergic Effects of Bibenzyl Derivatives from Liverworts, Radula perrottetii. PLANTA MEDICA 2022; 88:1069-1077. [PMID: 35081628 DOI: 10.1055/a-1750-3765] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The liverwort Radula perrottetii contains various bibenzyl derivatives which are known to possess various biological activities, such as anti-inflammatory effects. Mast cells (MC) play crucial roles in allergic and inflammatory diseases; thus, inhibition of MC activation is pivotal for the treatment of allergic and inflammatory disorders. We investigated the effects of perrottetin D (perD), isolated from Radula perrottetii, and perD diacetate (Ac-perD) on antigen-induced activation of MCs. Bone marrow-derived MCs (BMMCs) were generated from C57BL/6 mice. The degranulation ratio, histamine release, and the interleukin (IL)-4 and leukotriene B4 productions on antigen-triggered BMMC were investigated. Additionally, the effects of the bibenzyls on binding of IgE to FcεRI were observed by flow cytometry, and signal transduction proteins was examined by Western blot. Furthermore, binding of the bibenzyls to the Fyn kinase domain was calculated. At 10 µM, perD decreased the degranulation ratio (p < 0.01), whereas 10 µM Ac-perD down-regulated IL-4 production (p < 0.05) in addition to decreasing the degranulation ratio (p < 0.01). Both compounds tended to decrease histamine release at a concentration of 10 µM. Although 10 µM perD reduced only Syk phosphorylation, 10 µM Ac-perD diminished phosphorylation of Syk, Gab2, PLC-γ, and p38. PerD appeared to selectively bind Fyn, whereas Ac-perD appeared to act as a weak but broad-spectrum inhibitor of kinases, including Fyn. In conclusion, perD and Ac-perD suppressed the phosphorylation of signal transduction molecules downstream of the FcεRI and consequently inhibited degranulation, and/or IL-4 production. These may be beneficial potential lead compounds for the development of novel anti-allergic and anti-inflammatory drugs.
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Affiliation(s)
- Haruka Asai
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Aichi, Japan
| | - Koichi Kato
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Aichi, Japan
| | - Moe Suzuki
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Aichi, Japan
| | - Misato Takahashi
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Aichi, Japan
| | - Erika Miyata
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Aichi, Japan
| | - Moeka Aoi
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Aichi, Japan
| | - Reika Kumazawa
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Aichi, Japan
| | | | - Hiromasa Kurosaki
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Aichi, Japan
| | - Yutaka Aoyagi
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Aichi, Japan
| | - Nobuyuki Fukuishi
- Department of Pharmacology, College of Pharmacy, Kinjo Gakuin University, Aichi, Japan
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Darling NJ, Arthur JSC, Cohen P. Salt-inducible kinases are required for the IL-33-dependent secretion of cytokines and chemokines in mast cells. J Biol Chem 2021; 296:100428. [PMID: 33600797 PMCID: PMC7988334 DOI: 10.1016/j.jbc.2021.100428] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 01/28/2021] [Accepted: 02/12/2021] [Indexed: 02/07/2023] Open
Abstract
Cytokines and chemokines are important regulators of airway hyper-responsiveness, immune cell infiltration, and inflammation and are produced when mast cells are stimulated with interleukin-33 (IL-33). Here, we establish that the salt-inducible kinases (SIKs) are required for the IL-33-stimulated transcription of il13, gm-csf and tnf and hence the production of these cytokines. The IL-33-stimulated secretion of IL-13, granulocyte-macrophage colony stimulating factor, and tumor necrosis factor was strongly reduced in fetal liver-derived mast cells from mice expressing a kinase-inactive mutant of SIK3 and abolished in cells expressing kinase-inactive mutants of SIK2 and SIK3. The IL-33-dependent secretion of these cytokines and several chemokines was also abolished in SIK2/3 double knock-out bone marrow-derived mast cells (BMMC), reduced in SIK3 KO cells but little affected in BMMC expressing kinase-inactive mutants of SIK1 and SIK2 or lacking SIK2 expression. In SIK2 knock-out BMMC, the expression of SIK3 was greatly increased. Our studies identify essential roles for SIK2 and SIK3 in producing inflammatory mediators that trigger airway inflammation. The effects of SIKs were independent of IκB kinase β, IκB kinase β-mediated NF-κB-dependent gene transcription, and activation of the mitogen-activated protein kinase family members p38α and c-jun N-terminal kinases. Our results suggest that dual inhibitors of SIK2 and SIK3 may have therapeutic potential for the treatment of mast cell-driven diseases.
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Affiliation(s)
- Nicola J Darling
- MRC Protein Phosphorylation and Ubiquitylation Unit, University of Dundee, Dundee, Angus, UK
| | - J Simon C Arthur
- Division of Cell Signalling and Immunology, University of Dundee, Dundee, Angus, UK
| | - Philip Cohen
- MRC Protein Phosphorylation and Ubiquitylation Unit, University of Dundee, Dundee, Angus, UK.
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Type I Interferon α/β Receptor-Mediated Signaling Negatively Regulates Antiviral Cytokine Responses in Murine Bone-Marrow-Derived Mast Cells and Protects the Cells from Virus-Induced Cell Death. Int J Mol Sci 2020; 21:ijms21239041. [PMID: 33261178 PMCID: PMC7729593 DOI: 10.3390/ijms21239041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/10/2020] [Accepted: 11/23/2020] [Indexed: 12/20/2022] Open
Abstract
Mast cells (MCs) are critical for initiating inflammatory responses to pathogens including viruses. Type I interferons (IFNs) that exert their antiviral functions by interacting with the type I IFN receptor (IFNAR) play a central role in host cellular responses to viruses. Given that virus-induced excessive toxic inflammatory responses are associated with aberrant IFNAR signaling and considering MCs are an early source of inflammatory cytokines during viral infections, we sought to determine whether IFNAR signaling plays a role in antiviral cytokine responses of MCs. IFNAR-intact, IFNAR-blocked, and IFNAR-knockout (IFNAR−/−) bone-marrow-derived MCs (BMMCs) were treated in vitro with a recombinant vesicular stomatitis virus (rVSVΔm51) to assess cytokine production by these cells. All groups of MCs produced the cytokines interleukin-6 and tumor necrosis factor-α in response to rVSVΔm51. However, production of the cytokines was lowest in IFNAR-intact cells as compared with IFNAR−/− or IFNAR-blocked cells at 20 h post-stimulation. Surprisingly, rVSVΔm51 was capable of infecting BMMCs, but functional IFNAR signaling was able to protect these cells from virus-induced death. This study showed that BMMCs produced pro-inflammatory cytokines in response to rVSVΔm51 and that IFNAR signaling was required to down-modulate these responses and protect the cells from dying from viral infection.
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Hagiwara Y, Mori M, Kanazawa K, Ando A, Yabe Y, Koide M, Sekiguchi T, Itaya N, Tsuchiya M, Itoi E. Comparative proteome analysis of the capsule from patients with frozen shoulder. J Shoulder Elbow Surg 2018; 27:1770-1778. [PMID: 29784595 DOI: 10.1016/j.jse.2018.03.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 03/14/2018] [Accepted: 03/18/2018] [Indexed: 02/01/2023]
Abstract
BACKGROUND The etiology of frozen shoulder (FS) is unclear. Accordingly, this study used a label-free quantitative shotgun proteomic approach to elucidate the pathogenesis of FS based on protein expression levels. METHODS Tissue samples from the rotator interval (RI), middle glenohumeral ligament (MGHL), and anterior-inferior glenohumeral ligament (IGHL) were collected from 12 FSs with severe stiffness and 7 shoulders with a rotator cuff tear (RCT) as controls. Protein mixtures were digested and analyzed by nano-liquid chromatography/electrospray ionization-tandem mass spectrometry. Relative protein expression levels were calculated by the signal intensity of identified peptide ions on mass spectra. Differentially expressed proteins between FS and RCT samples were evaluated by a gene enrichment analysis using Gene Ontology and Kyoto Encyclopedia of Genes and Genomes. RESULTS We identified 1594 proteins, 1358 of which were expressed in all 6 tissue groups. We detected more upregulated proteins in the upper (RI and MGHL) FS groups and the lower (IGHL) RCT group than in the comparative groups, respectively. Various proteins with functions in tissue repair, collagen metabolism and fibrillation, cell-cell and cell-matrix adhesion, blood coagulation, and the immune response were expressed more highly in the RI and MGHL FS groups than in the RCT group. Proteins with functions in phagocytosis, glutathione metabolism, retinoid metabolism, and cholesterol metabolism were expressed more highly in the IGHL RCT group than in the FS group. CONCLUSIONS The pathophysiology of FS differs between the upper and lower parts of the joint capsule. Different treatment strategies for FS may be appropriate, depending on the location.
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Affiliation(s)
- Yoshihiro Hagiwara
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, Japan.
| | - Masaru Mori
- Institute for Advanced Biosciences, Keio University, Daihoji, Tsuruoka, Japan; Systems Biology Program, Graduate School of Media and Governance, Keio University, Fujisawa, Japan
| | - Kenji Kanazawa
- Department of Orthopaedic Surgery, Iwate Prefectural Central Hospital, Morioka, Japan
| | - Akira Ando
- Department of Otrhopaedic Surgery, Matsuda Hospital, Sendai, Japan
| | - Yutaka Yabe
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, Japan
| | - Masashi Koide
- Department of Otrhopaedic Surgery, Matsuda Hospital, Sendai, Japan
| | - Takuya Sekiguchi
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, Japan
| | - Nobuyuki Itaya
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, Japan
| | | | - Eiji Itoi
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, Japan
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Abstract
Mast cells and basophils are important innate immune cells involved in resistance to parasitic infection and are critical orchestrators of allergic disease. The relative ease with which they are cultured from mouse or human tissues allows one to work with primary cells that maintain a differentiated and functional phenotype. In this chapter, we describe the methods by which mouse mast cells and basophils can be cultured from bone marrow. We also provide methods for isolating and expanding mouse peritoneal mast cells and human skin mast cells.
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Wang LD, Rao TN, Rowe RG, Nguyen PT, Sullivan JL, Pearson DS, Doulatov S, Wu L, Lindsley RC, Zhu H, DeAngelo DJ, Daley GQ, Wagers AJ. The role of Lin28b in myeloid and mast cell differentiation and mast cell malignancy. Leukemia 2015; 29:1320-30. [PMID: 25655194 PMCID: PMC4456252 DOI: 10.1038/leu.2015.19] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 12/23/2014] [Accepted: 12/31/2014] [Indexed: 02/06/2023]
Abstract
Mast cells (MCs) are critical components of the innate immune system and important for host defense, allergy, autoimmunity, tissue regeneration and tumor progression. Dysregulated MC development leads to systemic mastocytosis (SM), a clinically variable but often devastating family of hematologic disorders. Here we report that induced expression of Lin28, a heterochronic gene and pluripotency factor implicated in driving a fetal hematopoietic program, caused MC accumulation in adult mice in target organs such as the skin and peritoneal cavity. In vitro assays revealed a skewing of myeloid commitment in LIN28B-expressing hematopoietic progenitors, with increased levels of LIN28B in common myeloid and basophil-MC progenitors altering gene expression patterns to favor cell fate choices that enhanced MC specification. In addition, LIN28B-induced MCs appeared phenotypically and functionally immature, and in vitro assays suggested a slowing of MC terminal differentiation in the context of LIN28B upregulation. Finally, interrogation of human MC leukemia samples revealed upregulation of LIN28B in abnormal MCs from patients with SM. This work identifies Lin28 as a novel regulator of innate immune function and a new protein of interest in MC disease.
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MESH Headings
- Aged
- Aged, 80 and over
- Animals
- Blotting, Western
- Bone Marrow Transplantation
- Cell Differentiation
- Cells, Cultured
- DNA-Binding Proteins/physiology
- Female
- Flow Cytometry
- Hematopoiesis/physiology
- Humans
- Leukemia, Mast-Cell/metabolism
- Leukemia, Mast-Cell/pathology
- Leukemia, Mast-Cell/therapy
- Male
- Mast Cells/cytology
- Mast Cells/metabolism
- Mastocytosis, Systemic/metabolism
- Mastocytosis, Systemic/pathology
- Mastocytosis, Systemic/therapy
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Middle Aged
- Myeloid Cells/cytology
- Myeloid Cells/metabolism
- RNA, Messenger/genetics
- RNA-Binding Proteins/metabolism
- Real-Time Polymerase Chain Reaction
- Reverse Transcriptase Polymerase Chain Reaction
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Affiliation(s)
- Leo D. Wang
- Joslin Diabetes Center, Boston, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
- Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Dana-Farber/Boston Children’s Center for Cancer and Blood Disorders, Boston, MA, USA
- Department of Medicine, Boston Children’s Hospital, Boston, MA, USA
| | - Tata Nageswara Rao
- Joslin Diabetes Center, Boston, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
| | - R. Grant Rowe
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Dana-Farber/Boston Children’s Center for Cancer and Blood Disorders, Boston, MA, USA
- Department of Medicine, Boston Children’s Hospital, Boston, MA, USA
- Manton Center for Orphan Disease Research, Boston, MA, USA
- Howard Hughes Medical Institute, Boston, MA, USA
| | - Phi T. Nguyen
- Joslin Diabetes Center, Boston, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
| | - Jessica L. Sullivan
- Joslin Diabetes Center, Boston, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
| | - Daniel S. Pearson
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Dana-Farber/Boston Children’s Center for Cancer and Blood Disorders, Boston, MA, USA
- Department of Medicine, Boston Children’s Hospital, Boston, MA, USA
- Manton Center for Orphan Disease Research, Boston, MA, USA
- Howard Hughes Medical Institute, Boston, MA, USA
- Medical Scientist Training Program, Harvard Medical School, Boston, MA, USA
| | - Sergei Doulatov
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Dana-Farber/Boston Children’s Center for Cancer and Blood Disorders, Boston, MA, USA
- Department of Medicine, Boston Children’s Hospital, Boston, MA, USA
- Manton Center for Orphan Disease Research, Boston, MA, USA
- Howard Hughes Medical Institute, Boston, MA, USA
| | - Linwei Wu
- Children’s Research Institute, Department of Pediatrics and Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Organ Transplant Center, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - R. Coleman Lindsley
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Division of Hematology, Brigham and Women’s Hospital, Boston, MA, USA
| | - Hao Zhu
- Children’s Research Institute, Department of Pediatrics and Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Daniel J. DeAngelo
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - George Q. Daley
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
- Stem Cell Transplantation Program, Division of Pediatric Hematology/Oncology, Dana-Farber/Boston Children’s Center for Cancer and Blood Disorders, Boston, MA, USA
- Department of Medicine, Boston Children’s Hospital, Boston, MA, USA
- Manton Center for Orphan Disease Research, Boston, MA, USA
- Howard Hughes Medical Institute, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
- Division of Hematology, Brigham and Women’s Hospital, Boston, MA, USA
| | - Amy J. Wagers
- Joslin Diabetes Center, Boston, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA
- Howard Hughes Medical Institute, Boston, MA, USA
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