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Ye J, Wei B, Zhou G, Xu Y, He Y, Hu X, Chen X, Zhang G, Liu H. Multi-dimensional characterization of apoptosis in the tumor microenvironment and therapeutic relevance in melanoma. Cell Oncol (Dordr) 2024:10.1007/s13402-024-00930-0. [PMID: 38502270 DOI: 10.1007/s13402-024-00930-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2024] [Indexed: 03/21/2024] Open
Abstract
PURPOSE Melanoma is widely utilized as a prominent model for the development of immunotherapy, thought an inadequate immune response can occur. Moreover, the development of apoptosis-related therapies and combinations with other therapeutic strategies is impeded by the limited understanding of apoptosis's role within diverse tumor immune microenvironments (TMEs). METHODS Here, we constructed an apoptosis-related tumor microenvironment signature (ATM) and employ multi-dimensional analysis to understand the roles of apoptosis in tumor microenvironment. We further assessed the clinical applications of ATM in nine independent cohorts, and anticipated the impact of ATM on cellular drug response in cultured cells. RESULTS Our ATM model exhibits robust performance in survival prediction in multiple melanoma cohorts. Different ATM groups exhibited distinct molecular signatures and biological processes. The low ATM group exhibited significant enrichment in B cell activation-related pathways. What's more, plasma cells showed the lowest ATM score, highlighting their role as pivotal contributors in the ATM model. Mechanistically, the analysis of the interplay between plasma cells and other immune cells elucidated their crucial role in orchestrating an effective anti-tumor immune response. Significantly, the ATM signature exhibited associations with therapeutic efficacy of immune checkpoint blockade and the drug sensitivity of various agents, including FDA-approved and clinically utilized drugs targeting the VEGF signaling pathway. Finally, ATM was associated with tertiary lymphoid structures (TLS), exhibiting stronger patient stratification ability compared to classical "hot tumors". CONCLUSION Our findings indicate that ATM is a prognostic factor and is associated with the immune response and drug sensitivity in melanoma.
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Affiliation(s)
- Jing Ye
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Changsha, Hunan, 410008, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, 410008, China
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, 410008, China
- Xiangya Clinical Research Center for Cancer Immunotherapy, Changsha, Hunan, 410008, China
| | - Benliang Wei
- Big Data Institute, Central South University, Changsha, Hunan, 410008, China
| | - Guowei Zhou
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Changsha, Hunan, 410008, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, 410008, China
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, 410008, China
- Xiangya Clinical Research Center for Cancer Immunotherapy, Changsha, Hunan, 410008, China
| | - Yantao Xu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Changsha, Hunan, 410008, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, 410008, China
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, 410008, China
- Xiangya Clinical Research Center for Cancer Immunotherapy, Changsha, Hunan, 410008, China
| | - Yi He
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Changsha, Hunan, 410008, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, 410008, China
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, 410008, China
- Xiangya Clinical Research Center for Cancer Immunotherapy, Changsha, Hunan, 410008, China
| | - Xiheng Hu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Changsha, Hunan, 410008, China.
- Furong Laboratory, Changsha, Hunan, China.
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China.
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Changsha, Hunan, 410008, China.
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, 410008, China.
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, 410008, China.
- Xiangya Clinical Research Center for Cancer Immunotherapy, Changsha, Hunan, 410008, China.
- Furong Laboratory, Changsha, Hunan, China.
| | - Guanxiong Zhang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Changsha, Hunan, 410008, China.
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, 410008, China.
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, 410008, China.
- Xiangya Clinical Research Center for Cancer Immunotherapy, Changsha, Hunan, 410008, China.
| | - Hong Liu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China.
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology, Changsha, Hunan, 410008, China.
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, 410008, China.
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, 410008, China.
- Xiangya Clinical Research Center for Cancer Immunotherapy, Changsha, Hunan, 410008, China.
- Big Data Institute, Central South University, Changsha, Hunan, 410008, China.
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Zhang H, Zang C, Zhao W, Zhang L, Liu R, Feng Z, Wu J, Cui R. Exosome Derived from Mesenchymal Stem Cells Alleviates Hypertrophic Scar by Inhibiting the Fibroblasts via TNFSF-13/HSPG2 Signaling Pathway. Int J Nanomedicine 2023; 18:7047-7063. [PMID: 38046235 PMCID: PMC10693282 DOI: 10.2147/ijn.s433510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/19/2023] [Indexed: 12/05/2023] Open
Abstract
Background Mesenchymal stem cell-derived exosomes (MSC-exo) have been shown to have significant potential in wound healing and scar relief processes. According to reports, TNFSF13 and HSPG2 are associated with various fibrotic diseases. The aim of this study is to investigate how TNFSF13 and HSPG2 affect the formation of hypertrophic scar (HS) and the mechanism by which exosomes regulate HS. Methods Immunohistochemistry, qRT-PCR, Western blot, and immunofluorescence were performed to measure TNFSF13 expression in HS skin tissues and hypertrophic scar fibroblast (HSF). HSF were treated with recombinant TNFSF13 protein and TNFSF13 siRNAs to probe the effect of TNFSF13 on the activity of HSF. The CCK-8, EdU, Transwell, and Western blot were used to investigate the role of TNFSF13 in viability, proliferation and inflammation. The influence of MSC-exo on the proliferation and function of HSF was determined by scratch and Western blot. Results TNFSF13 was dramatically up-regulated in HS skin tissues and HSF. Recombinant TNFSF13 protein increased cell viability, proliferation, migration, fibrosis, inflammation, and the binding between TNFSF13 and HSPG2 of HSF. The opposite results were obtained in TNFSF13 siRNAs transferred HSF. Furthermore, TNFSF13 activated the nuclear factor-κB (NF-κB) signaling pathway. Silencing of HSPG2 and inhibition of NF-κB remarkably eliminated the promoting effects of TNFSF13 on cell viability, proliferation, migration, fibrosis and inflammation of HSF. MSC-exo reduced α-SMA and COL1A1 inhibited the proliferation and migration of HSF by inhibiting TNFSF13 and HSPG2. Conclusion TNFSF13 activates NF-κB signaling pathway by interacting with HSPG2, which regulates the proliferation, migration, fibrosis and inflammatory response of HSF. Through the above mechanisms, knocking out TNFSF13 can inhibit the proliferation, migration, fibrosis and inflammatory response of HSF, whereas MSC-exo could reverse this process. These results suggest that MSC-exo alleviates HS by inhibiting the fibroblasts via TNFSF-13/HSPG2 signaling pathway.
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Affiliation(s)
- Huimin Zhang
- Department of Burn and Plastic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
| | - Chengyu Zang
- Department of Burn and Plastic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
- Department of Burn and Plastic Surgery, Shandong Provincial Hospital, Shandong University, Jinan, People’s Republic of China
| | - Wen Zhao
- Department of Burn and Plastic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
| | - Linfeng Zhang
- Department of Burn and Plastic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
| | - Rui Liu
- Department of Burn and Plastic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
| | - Zhang Feng
- Department of Burn and Plastic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
| | - Jie Wu
- Department of Burn and Plastic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
| | - Rongtao Cui
- Department of Burn and Plastic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People’s Republic of China
- Department of Burn and Plastic Surgery, Shandong Provincial Hospital, Shandong University, Jinan, People’s Republic of China
- Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, People’s Republic of China
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Walker K, Mistry A, Watson CM, Nadat F, O'Callaghan E, Care M, Crinnion LA, Arumugakani G, Bonthron DT, Carter C, Doody GM, Savic S. Inherited CD19 Deficiency Does Not Impair Plasma Cell Formation or Response to CXCL12. J Clin Immunol 2023; 43:1543-1556. [PMID: 37246174 PMCID: PMC10499936 DOI: 10.1007/s10875-023-01511-w] [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: 03/28/2022] [Accepted: 05/04/2023] [Indexed: 05/30/2023]
Abstract
BACKGROUND The human CD19 antigen is expressed throughout B cell ontogeny with the exception of neoplastic plasma cells and a subset of normal plasma cells. CD19 plays a role in propagating signals from the B cell receptor and other receptors such as CXCR4 in mature B cells. Studies of CD19-deficient patients have confirmed its function during the initial stages of B cell activation and the production of memory B cells; however, its role in the later stages of B cell differentiation is unclear. OBJECTIVE Using B cells from a newly identified CD19-deficient individual, we investigated the role of CD19 in the generation and function of plasma cells using an in vitro differentiation model. METHODS Flow cytometry and long-read nanopore sequencing using locus-specific long-range amplification products were used to screen a patient with suspected primary immunodeficiency. Purified B cells from the patient and healthy controls were activated with CD40L, IL-21, IL-2, and anti-Ig, then transferred to different cytokine conditions to induce plasma cell differentiation. Subsequently, the cells were stimulated with CXCL12 to induce signalling through CXCR4. Phosphorylation of key downstream proteins including ERK and AKT was assessed by Western blotting. RNA-seq was also performed on in vitro differentiating cells. RESULTS Long-read nanopore sequencing identified the homozygous pathogenic mutation c.622del (p.Ser208Profs*19) which was corroborated by the lack of CD19 cell surface staining. CD19-deficient B cells that are predominantly naïve generate phenotypically normal plasma cells with expected patterns of differentiation-associated genes and normal levels of CXCR4. Differentiated CD19-deficient cells were capable of responding to CXCL12; however, plasma cells derived from naïve B cells, both CD19-deficient and sufficient, had relatively diminished signaling compared to those generated from total B cells. Additionally, CD19 ligation on normal plasma cells results in AKT phosphorylation. CONCLUSION CD19 is not required for generation of antibody-secreting cells or the responses of these populations to CXCL12, but may alter the response other ligands that require CD19 potentially affecting localization, proliferation, or survival. The observed hypogammaglobulinemia in CD19-deficient individuals is therefore likely attributable to the lack of memory B cells.
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Affiliation(s)
- Kieran Walker
- Leeds Institute of Medical Research, University of Leeds, St. James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - Anoop Mistry
- Department of Clinical Immunology and Allergy, St James's University Hospital, 5.18 Clinical Sciences Building, Beckett Street, Leeds, LS9 7TF, UK
| | - Christopher M Watson
- Leeds Institute of Medical Research, University of Leeds, St. James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
- Yorkshire and North East Genomic Laboratory Hub, Central Lab, St. James's University Hospital, Leeds, LS9 7TF, UK
| | - Fatima Nadat
- Department of Clinical Immunology and Allergy, St James's University Hospital, 5.18 Clinical Sciences Building, Beckett Street, Leeds, LS9 7TF, UK
| | - Eleanor O'Callaghan
- Leeds Institute of Medical Research, University of Leeds, St. James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - Matthew Care
- Leeds Institute of Medical Research, University of Leeds, St. James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - Laura A Crinnion
- Leeds Institute of Medical Research, University of Leeds, St. James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
- Yorkshire and North East Genomic Laboratory Hub, Central Lab, St. James's University Hospital, Leeds, LS9 7TF, UK
| | - Gururaj Arumugakani
- Department of Clinical Immunology and Allergy, St James's University Hospital, 5.18 Clinical Sciences Building, Beckett Street, Leeds, LS9 7TF, UK
| | - David T Bonthron
- Leeds Institute of Medical Research, University of Leeds, St. James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
- Department of Clinical Genetics, Chapel Allerton Hospital, Leeds, LS7 4SA, UK
| | - Clive Carter
- Department of Clinical Immunology and Allergy, St James's University Hospital, 5.18 Clinical Sciences Building, Beckett Street, Leeds, LS9 7TF, UK
| | - Gina M Doody
- Leeds Institute of Medical Research, University of Leeds, St. James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - Sinisa Savic
- Department of Clinical Immunology and Allergy, St James's University Hospital, 5.18 Clinical Sciences Building, Beckett Street, Leeds, LS9 7TF, UK.
- National Institute for Health Research, Leeds Biomedical Research Centre and Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), St James's University Hospital, Leeds, LS9 7TF, UK.
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4
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Brownlie RJ, Kennedy R, Wilson EB, Milanovic M, Taylor CF, Wang D, Davies JR, Owston H, Adams EJ, Stephenson S, Caeser R, Gewurz BE, Giannoudis PV, Scuoppo C, McGonagle D, Hodson DJ, Tooze RM, Doody GM, Cook G, Westhead DR, Klein U. Cytokine receptor IL27RA is an NF-κB-responsive gene involved in CD38 upregulation in multiple myeloma. Blood Adv 2023; 7:3874-3890. [PMID: 36867577 PMCID: PMC10405202 DOI: 10.1182/bloodadvances.2022009044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 02/27/2023] [Indexed: 03/04/2023] Open
Abstract
Multiple myeloma (MM) shows constitutive activation of canonical and noncanonical nuclear factor κB (NF-κB) signaling via genetic mutations or tumor microenvironment (TME) stimulations. A subset of MM cell lines showed dependency for cell growth and survival on the canonical NF-κB transcription factor RELA alone, suggesting a critical role for a RELA-mediated biological program in MM pathogenesis. Here, we determined the RELA-dependent transcriptional program in MM cell lines and found the expression of the cell surface molecules interleukin-27 receptor-α (IL-27Rα) and the adhesion molecule JAM2 to be responsive to RELA at the messenger RNA and protein levels. IL-27Rα and JAM2 were expressed on primary MM cells at higher levels than on healthy long-lived plasma cells (PCs) in the bone marrow. IL-27 activated STAT1, and to a lesser extent STAT3, in MM cell lines and in PCs generated from memory B cells in an IL-21-dependent in vitro PC differentiation assay. Concomitant activity of IL-21 and IL-27 enhanced differentiation into PCs and increased the cell-surface expression of the known STAT target gene CD38. In accordance, a subset of MM cell lines and primary MM cells cultured with IL-27 upregulated CD38 cell-surface expression, a finding with potential implications for enhancing the efficacy of CD38-directed monoclonal antibody therapies by increasing CD38 expression on tumor cells. The elevated expression of IL-27Rα and JAM2 on MM cells compared with that on healthy PCs may be exploited for the development of targeted therapeutic strategies that modulate the interaction of MM cells with the TME.
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Affiliation(s)
- Rebecca J. Brownlie
- Division of Haematology & Immunology, Leeds Institute of Medical Research at St. James’s Hospital, University of Leeds, Leeds, United Kingdom
| | - Ruth Kennedy
- Division of Haematology & Immunology, Leeds Institute of Medical Research at St. James’s Hospital, University of Leeds, Leeds, United Kingdom
| | - Erica B. Wilson
- Division of Haematology & Immunology, Leeds Institute of Medical Research at St. James’s Hospital, University of Leeds, Leeds, United Kingdom
| | - Maja Milanovic
- Institute for Cancer Genetics, Columbia University Medical Center, New York, NY
| | - Claire F. Taylor
- Division of Haematology & Immunology, Leeds Institute of Medical Research at St. James’s Hospital, University of Leeds, Leeds, United Kingdom
| | - Dapeng Wang
- Leeds Omics, University of Leeds, Leeds, United Kingdom
| | - John R. Davies
- Bioinformatics Group, School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Heather Owston
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, United Kingdom
- National Institute for Health Research, Leeds Biomedical Research Centre, Leeds Teaching Hospitals, Leeds, United Kingdom
| | - Emma J. Adams
- Division of Haematology & Immunology, Leeds Institute of Medical Research at St. James’s Hospital, University of Leeds, Leeds, United Kingdom
| | - Sophie Stephenson
- Division of Haematology & Immunology, Leeds Institute of Medical Research at St. James’s Hospital, University of Leeds, Leeds, United Kingdom
| | - Rebecca Caeser
- Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | | | - Peter V. Giannoudis
- Leeds Orthopaedic & Trauma Sciences, Leeds General Infirmary, and Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, United Kingdom
| | - Claudio Scuoppo
- Institute for Cancer Genetics, Columbia University Medical Center, New York, NY
| | - Dennis McGonagle
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, United Kingdom
- National Institute for Health Research, Leeds Biomedical Research Centre, Leeds Teaching Hospitals, Leeds, United Kingdom
| | - Daniel J. Hodson
- Wellcome-MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | - Reuben M. Tooze
- Division of Haematology & Immunology, Leeds Institute of Medical Research at St. James’s Hospital, University of Leeds, Leeds, United Kingdom
| | - Gina M. Doody
- Division of Haematology & Immunology, Leeds Institute of Medical Research at St. James’s Hospital, University of Leeds, Leeds, United Kingdom
| | - Gordon Cook
- CRUK Clinical Trials Unit, Leeds Institute of Clinical Trial Research, University of Leeds, Leeds, United Kingdom
| | - David R. Westhead
- Bioinformatics Group, School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Ulf Klein
- Division of Haematology & Immunology, Leeds Institute of Medical Research at St. James’s Hospital, University of Leeds, Leeds, United Kingdom
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Care MA, Stephenson S, Owen R, Doody GM, Tooze RM. Spontaneous EBV-Reactivation during B Cell Differentiation as a Model for Polymorphic EBV-Driven Lymphoproliferation. Cancers (Basel) 2023; 15:3083. [PMID: 37370694 PMCID: PMC10296496 DOI: 10.3390/cancers15123083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/24/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
Epstein-Barr virus (EBV)-driven B cell neoplasms arise from the reactivation of latently infected B cells. In a subset of patients, EBV was seen to drive a polymorphous lymphoproliferative disorder (LPD) in which B cell differentiation was retained. In this work, spontaneous EBV reactivation following B cell mitogen stimulation was shown to provide a potential model of polymorphic EBV-driven LPD. Here, we developed an in vitro model of plasma cell (PC) differentiation from peripheral blood memory B cells. To assess the frequency and phenotypes of EBV-associated populations derived during differentiation, we analysed eight differentiations during the PC stage with a targeted single-cell gene expression panel. We identified subpopulations of EBV-gene expressing cells with PC and/or B cell expression features in differentiations from all tested donors. EBV-associated cells varied in frequency, ranging from 3-28% of cells. Most EBV-associated cells expressed PC genes such as XBP1 or MZB1, and in all samples these included a quiescent PC fraction that lacked cell a cycle gene expression. With increasing EBV-associated cells, populations with B cell features became prominent, co-expressing a germinal centre (GC) and activating B cell gene patterns. The presence of highly proliferative EBV-associated cells was linked to retained MS4A1/CD20 expression and IGHM and IGHD co-expression, while IGHM class-switched cells were enriched in quiescent PC fractions. Thus, patterns of gene expression in primary EBV reactivation were shown to include features related to GC B cells, which was also observed in EBV-transformed lymphoblastoid cell lines. This suggests a particular association between spontaneously developing EBV-expansions and IgM+ IgD+ non-switched B cells.
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Affiliation(s)
- Matthew A. Care
- Division of Haematology and Immunology, Leeds Institute of Medical Research, University of Leeds, Leeds LS9 7TF, UK; (M.A.C.); (S.S.)
- Bioinformatics Group, School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Sophie Stephenson
- Division of Haematology and Immunology, Leeds Institute of Medical Research, University of Leeds, Leeds LS9 7TF, UK; (M.A.C.); (S.S.)
| | - Roger Owen
- Haematological Malignancy Diagnostic Service, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK;
| | - Gina M. Doody
- Division of Haematology and Immunology, Leeds Institute of Medical Research, University of Leeds, Leeds LS9 7TF, UK; (M.A.C.); (S.S.)
| | - Reuben M. Tooze
- Division of Haematology and Immunology, Leeds Institute of Medical Research, University of Leeds, Leeds LS9 7TF, UK; (M.A.C.); (S.S.)
- Haematological Malignancy Diagnostic Service, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK;
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Stephenson S, Doody GM. Metabolic Reprogramming During B-Cell Differentiation. Methods Mol Biol 2023; 2675:271-283. [PMID: 37258770 DOI: 10.1007/978-1-0716-3247-5_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
B cells engaging with antigen and secondary signals provided by T cell help, or ligands for Toll-like receptors, undergo a step-wise process of differentiation to eventually produce antibody-secreting plasma cells. During the course of this conversion, the cells transition from a resting, non-growing state to an activated B-cell state engaged in DNA synthesis and mitosis to a terminally differentiated, quiescent cell state with expanded organelles necessary for high levels of secretion. Each of these phases is accompanied by considerable changes in metabolic requirements. To facilitate evaluation of this metabolic reprogramming, methods for the in vitro differentiation of human B cells that incorporates each of the transitional stages are described.
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Affiliation(s)
- Sophie Stephenson
- Division of Haematology and Immunology, Leeds Institute of Medical Research, University of Leeds, Leeds, UK
| | - Gina M Doody
- Division of Haematology and Immunology, Leeds Institute of Medical Research, University of Leeds, Leeds, UK.
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