1
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Jenberie S, van der Wal YA, Jensen I, Jørgensen JB. There and back again? A B cell's tale on responses and spatial distribution in teleosts. FISH & SHELLFISH IMMUNOLOGY 2024; 148:109479. [PMID: 38467322 DOI: 10.1016/j.fsi.2024.109479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/04/2024] [Accepted: 03/05/2024] [Indexed: 03/13/2024]
Abstract
Teleost B cells are of special interest due to their evolutionary position and involvement in vaccine-induced adaptive immune responses. While recent progress has revealed uneven distribution of B cell subsets across the various immune sites and that B cells are one of the early responders to infection, substantial knowledge gaps persist regarding their immunophenotypic profile, functional mechanisms, and what factors lead them to occupy different immune niches. This review aims to assess the current understanding of B cell diversity, their spatial distribution in various systemic and peripheral immune sites, how B cell responses initiate, the sites where these responses develop, their trafficking, and the locations where long-term B cell responses take place.
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Affiliation(s)
- Shiferaw Jenberie
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT - the Arctic University of Norway, Tromsø, Norway.
| | | | - Ingvill Jensen
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT - the Arctic University of Norway, Tromsø, Norway
| | - Jorunn B Jørgensen
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT - the Arctic University of Norway, Tromsø, Norway
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2
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Calmon MS, Lemos FFB, Silva Luz M, Rocha Pinheiro SL, de Oliveira Silva LG, Correa Santos GL, Rocha GR, Freire de Melo F. Immune pathway through endometriosis to ovarian cancer. World J Clin Oncol 2024; 15:496-522. [PMID: 38689629 PMCID: PMC11056862 DOI: 10.5306/wjco.v15.i4.496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/29/2024] [Accepted: 03/18/2024] [Indexed: 04/22/2024] Open
Abstract
Endometriosis is an estrogen-dependent inflammatory disease, defined by the presence of functional endometrial tissue outside of the uterine cavity. This disease is one of the main gynecological diseases, affecting around 10%-15% women and girls of reproductive age, being a common gynecologic disorder. Although endometriosis is a benign disease, it shares several characteristics with invasive cancer. Studies support that it has been linked with an increased chance of developing endometrial ovarian cancer, representing an earlier stage of neoplastic processes. This is particularly true for women with clear cell carcinoma, low-grade serous carcinoma and endometrioid. However, the carcinogenic pathways between both pathologies remain poorly understood. Current studies suggest a connection between endometriosis and endometriosis-associated ovarian cancers (EAOCs) via pathways associated with oxidative stress, inflammation, and hyperestrogenism. This article aims to review current data on the molecular events linked to the development of EAOCs from endometriosis, specifically focusing on the complex relationship between the immune response to endometriosis and cancer, including the molecular mechanisms and their ramifications. Examining recent developments in immunotherapy and their potential to boost the effectiveness of future treatments.
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Affiliation(s)
- Mariana Santos Calmon
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | - Fabian Fellipe Bueno Lemos
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | - Marcel Silva Luz
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | - Samuel Luca Rocha Pinheiro
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | | | - Gabriel Lima Correa Santos
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | - Gabriel Reis Rocha
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
| | - Fabrício Freire de Melo
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Bahia, Brazil
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3
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Das A, Ariyakumar G, Gupta N, Kamdar S, Barugahare A, Deveson-Lucas D, Gee S, Costeloe K, Davey MS, Fleming P, Gibbons DL. Identifying immune signatures of sepsis to increase diagnostic accuracy in very preterm babies. Nat Commun 2024; 15:388. [PMID: 38195661 PMCID: PMC10776581 DOI: 10.1038/s41467-023-44387-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 12/12/2023] [Indexed: 01/11/2024] Open
Abstract
Bacterial infections are a major cause of mortality in preterm babies, yet our understanding of early-life disease-associated immune dysregulation remains limited. Here, we combine multi-parameter flow cytometry, single-cell RNA sequencing and plasma analysis to longitudinally profile blood from very preterm babies (<32 weeks gestation) across episodes of invasive bacterial infection (sepsis). We identify a dynamically changing blood immune signature of sepsis, including lymphopenia, reduced dendritic cell frequencies and myeloid cell HLA-DR expression, which characterizes sepsis even when the common clinical marker of inflammation, C-reactive protein, is not elevated. Furthermore, single-cell RNA sequencing identifies upregulation of amphiregulin in leukocyte populations during sepsis, which we validate as a plasma analyte that correlates with clinical signs of disease, even when C-reactive protein is normal. This study provides insights into immune pathways associated with early-life sepsis and identifies immune analytes as potential diagnostic adjuncts to standard tests to guide targeted antibiotic prescribing.
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Affiliation(s)
- A Das
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, Guy's Hospital, London, UK.
- Division of Infection and Immunity, University College London, London, WC1E 6BT, UK.
| | - G Ariyakumar
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, Guy's Hospital, London, UK
| | - N Gupta
- Department of Neonatology, Evelina London Neonatal Unit, Guy's and St Thomas' NHS Foundation Trust, London, UK
- Faculty of Life Sciences & Medicine, King's College London, London, UK
| | - S Kamdar
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, Guy's Hospital, London, UK
| | - A Barugahare
- Bioinformatics Platform and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3800, Australia
| | - D Deveson-Lucas
- Bioinformatics Platform and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3800, Australia
| | - S Gee
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, Guy's Hospital, London, UK
| | - K Costeloe
- Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - M S Davey
- Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3800, Australia
- Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK
| | - P Fleming
- Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- Department of Neonatology, Homerton Healthcare NHS Foundation Trust, London, UK
| | - D L Gibbons
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, Guy's Hospital, London, UK.
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4
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da Silva Lima F, da Silva Gonçalves CE, Fock RA. A review of the role of zinc finger proteins on hematopoiesis. J Trace Elem Med Biol 2023; 80:127290. [PMID: 37659124 DOI: 10.1016/j.jtemb.2023.127290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 08/07/2023] [Accepted: 08/21/2023] [Indexed: 09/04/2023]
Abstract
The bone marrow is responsible for producing an incredible number of cells daily in order to maintain blood homeostasis through a process called hematopoiesis. Hematopoiesis is a greatly demanding process and one entirely dependent on complex interactions between the hematopoietic stem cell (HSC) and its surrounding microenvironment. Zinc (Zn2+) is considered an important trace element, playing diverse roles in different tissues and cell types, and zinc finger proteins (ZNF) are proteins that use Zn2+ as a structural cofactor. In this way, the ZNF structure is supported by a Zn2+ that coordinates many possible combinations of cysteine and histidine, with the most common ZNF being of the Cys2His2 (C2H2) type, which forms a family of transcriptional activators that play an important role in different cellular processes such as development, differentiation, and suppression, all of these being essential processes for an adequate hematopoiesis. This review aims to shed light on the relationship between ZNF and the regulation of the hematopoietic tissue. We include works with different designs, including both in vitro and in vivo studies, detailing how ZNF might regulate hematopoiesis.
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Affiliation(s)
- Fabiana da Silva Lima
- Department of Food and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Ricardo Ambrósio Fock
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.
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5
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Zhu Q, Wang L, Ren H, Zhang J, Zuo Q, Li M, Zhu J, Yang G, Zhang F. Molecular characterization of the B lymphocyte-induced maturation protein-1 (blimp1) gene of common carp (Cyprinus carpio) and its transcription repression involves recruitment of histone deacetylase HDAC3. FISH & SHELLFISH IMMUNOLOGY 2023; 143:109216. [PMID: 37944681 DOI: 10.1016/j.fsi.2023.109216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 10/05/2023] [Accepted: 11/06/2023] [Indexed: 11/12/2023]
Abstract
Blimp1 is the master regulator of B cell terminal differentiation in mammals, it inhibits expression of many transcription factors including bcl6, which provides the basis for promoting further development of activated B lymphocytes into plasma cells. Blimp-1 is thought to act as a sequence-specific recruitment factor for chromatin-modifying enzymes including histone deacetylases (HDAC) and methyltransferases to repress target genes. The cDNA of Ccblimp1a (Cyprinus carpio) open reading frame is 2337 bp encoding a protein of 777 amino acids. CcBlimp1a contains a SET domain, two Proline Rich domains, and five ZnF_C2H2 domains. Blimp1 are conserved in vertebrate species. Ccblimp1a transcripts were detected in common carp larvae from 1 dpf (day post fertilization)to 31 dpf. Ccblimp1a expression was up-regulated in peripheral blood leukocytes (PBL) and spleen leukocytes (SPL) of common carp stimulated by intraperitoneal lipopolysaccharide (LPS) injection. Ccblimp1a expression in PBL and SPL of common carp was induced by TNP-LPS and TNP-KLH. The results indicated TNP-LPS induced a rapid response in PBL and TNP-KLH induced much stronger response in SPL and PBL. IHC results showed that CcBlimp1 positive cells were distributed in the head kidney, trunk kidney, liver, and gut. Immunofluorescence stain results showed that CcBlimp1 was expressed in IgM + lymphocytes. The subcellular localization of CcBlimp1 in the nuclei indicated CcBlimp1 may be involved in the differentiation of IgM + lymphocytes. Further study focusing on the function of CcBlimp1 transcriptional repression was performed using dual luciferase assay. The results showed that the transcription repression of CcBlimp1 on bcl6aa promoter was affected by the histone deacetylation inhibitor and was synergized with histone deacetylase 3 (HDAC3). The results of Co-IP in HEK293T and immunoprecipitation in SPL indicated that CcBlimp1 recruited HDAC3 and might be involved in the formation of complexes. These results suggest that CcBlimp1 is an important transcription factor in common carp lymphocytes. Histone deacetylation modification mediated by HDAC3 may have important roles in CcBlimp1 transcriptional repression during the differentiation of lymphocytes.
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Affiliation(s)
- Qiannan Zhu
- Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Sciences, Shandong Normal University, 88 East Wenhua Road, Jinan, Shandong, 250014, China
| | - Lei Wang
- Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, China
| | - Haoyue Ren
- Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Sciences, Shandong Normal University, 88 East Wenhua Road, Jinan, Shandong, 250014, China
| | - Jiaqi Zhang
- Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Sciences, Shandong Normal University, 88 East Wenhua Road, Jinan, Shandong, 250014, China
| | - Qingyun Zuo
- Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Sciences, Shandong Normal University, 88 East Wenhua Road, Jinan, Shandong, 250014, China
| | - Mojin Li
- Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Sciences, Shandong Normal University, 88 East Wenhua Road, Jinan, Shandong, 250014, China
| | - Jianping Zhu
- Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Sciences, Shandong Normal University, 88 East Wenhua Road, Jinan, Shandong, 250014, China
| | - Guiwen Yang
- Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Sciences, Shandong Normal University, 88 East Wenhua Road, Jinan, Shandong, 250014, China.
| | - Fumiao Zhang
- Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Sciences, Shandong Normal University, 88 East Wenhua Road, Jinan, Shandong, 250014, China.
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6
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Trujillo-Ochoa JL, Kazemian M, Afzali B. The role of transcription factors in shaping regulatory T cell identity. Nat Rev Immunol 2023; 23:842-856. [PMID: 37336954 PMCID: PMC10893967 DOI: 10.1038/s41577-023-00893-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2023] [Indexed: 06/21/2023]
Abstract
Forkhead box protein 3-expressing (FOXP3+) regulatory T cells (Treg cells) suppress conventional T cells and are essential for immunological tolerance. FOXP3, the master transcription factor of Treg cells, controls the expression of multiples genes to guide Treg cell differentiation and function. However, only a small fraction (<10%) of Treg cell-associated genes are directly bound by FOXP3, and FOXP3 alone is insufficient to fully specify the Treg cell programme, indicating a role for other accessory transcription factors operating upstream, downstream and/or concurrently with FOXP3 to direct Treg cell specification and specialized functions. Indeed, the heterogeneity of Treg cells can be at least partially attributed to differential expression of transcription factors that fine-tune their trafficking, survival and functional properties, some of which are niche-specific. In this Review, we discuss the emerging roles of accessory transcription factors in controlling Treg cell identity. We specifically focus on members of the basic helix-loop-helix family (AHR), basic leucine zipper family (BACH2, NFIL3 and BATF), CUT homeobox family (SATB1), zinc-finger domain family (BLIMP1, Ikaros and BCL-11B) and interferon regulatory factor family (IRF4), as well as lineage-defining transcription factors (T-bet, GATA3, RORγt and BCL-6). Understanding the imprinting of Treg cell identity and specialized function will be key to unravelling basic mechanisms of autoimmunity and identifying novel targets for drug development.
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Affiliation(s)
- Jorge L Trujillo-Ochoa
- Immunoregulation Section, Kidney Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), NIH, Bethesda, MD, USA
| | - Majid Kazemian
- Departments of Biochemistry and Computer Science, Purdue University, West Lafayette, IN, USA
| | - Behdad Afzali
- Immunoregulation Section, Kidney Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), NIH, Bethesda, MD, USA.
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7
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Sun Q, Cai D, Liu D, Zhao X, Li R, Xu W, Xie B, Gou M, Wei K, Li Y, Huang J, Chi X, Wei P, Hao J, Guo X, Pan B, Fu Y, Ni L, Dong C. BCL6 promotes a stem-like CD8 + T cell program in cancer via antagonizing BLIMP1. Sci Immunol 2023; 8:eadh1306. [PMID: 37862431 DOI: 10.1126/sciimmunol.adh1306] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 08/30/2023] [Indexed: 10/22/2023]
Abstract
Overcoming CD8+ T cell exhaustion is critical in cancer immunotherapy. Recently, an intratumor stem/progenitor-like CD8+ T cell (Tprog cell) population that mediates the persistence of antitumor responses has been defined, which can further develop into a terminally differentiated CD8+ T cell (Tterm cell) subpopulation with potent cytotoxic functions. Tprog cells are the main responders to immune checkpoint blockade therapies, yet how extrinsic signals via transcription factors control Tprog cell generation and persistence in tumors is unclear. Here, we found that BCL6 inhibits tumor-specific Tterm cell generation from Tprog cell downstream of TCF1. We show that Bcl6 deficiency reduced the persistence of Tprog cells, without affecting their generation, thus abrogating long-term tumor control. High-level BCL6 expression was observed in tumor-specific T cells in draining lymph nodes (LNs) and was associated with T cell exhaustion. This was observed in TOX+TCF1+ Tprog cells in both LNs and tumors. BCL6 expression in CD8+ T cells was up-regulated by TGF-β-SMAD2 signaling but down-regulated by the IL-2-STAT5 pathway. Mechanistically, BCL6 transcriptionally repressed the expression of Tterm cell-associated genes and induced those of Tprog cell-related genes, in a manner antagonistic to BLIMP1. Prdm1 deficiency also promoted the Tprog cell program and greatly improved the efficacy of anti-PD-1 therapy. Thus, we identified the TGF-β-BCL6 and IL-2-BLIMP1 antagonistic pathways in regulation of antitumor CD8+ T cells, which may benefit the development of long-lasting and effective cancer immunotherapy.
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Affiliation(s)
- Qinli Sun
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
| | - Dongli Cai
- Shanghai Immune Therapy Institute, New Cornerstone Science Laboratory, Shanghai Jiao Tong University School of Medicine-Affiliated Renji Hospital, Shanghai 200127, China
- Department of Gynaecology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai 201204, China
| | - Dingfeng Liu
- Shanghai Immune Therapy Institute, New Cornerstone Science Laboratory, Shanghai Jiao Tong University School of Medicine-Affiliated Renji Hospital, Shanghai 200127, China
- Department of Gynaecology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai 201204, China
| | - Xiaohong Zhao
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
| | - Ruifeng Li
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
- Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China
| | - Wei Xu
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
- Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China
| | - Bowen Xie
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
- Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China
| | - Mengting Gou
- Shanghai Immune Therapy Institute, New Cornerstone Science Laboratory, Shanghai Jiao Tong University School of Medicine-Affiliated Renji Hospital, Shanghai 200127, China
| | - Kun Wei
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
| | - Yuling Li
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
- College of Life Science and Peking University-Tsinghua University-National Institute of Biological Sciences Joint Graduate Program, Tsinghua University, Beijing 100084, China
| | - Jinling Huang
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
| | - Xinxin Chi
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
| | - Peng Wei
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
- Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China
| | - Jing Hao
- Shanghai Immune Therapy Institute, New Cornerstone Science Laboratory, Shanghai Jiao Tong University School of Medicine-Affiliated Renji Hospital, Shanghai 200127, China
| | - Xinyi Guo
- Shanghai Immune Therapy Institute, New Cornerstone Science Laboratory, Shanghai Jiao Tong University School of Medicine-Affiliated Renji Hospital, Shanghai 200127, China
| | - Birui Pan
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
| | - Yujie Fu
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
- Shanghai Immune Therapy Institute, New Cornerstone Science Laboratory, Shanghai Jiao Tong University School of Medicine-Affiliated Renji Hospital, Shanghai 200127, China
| | - Ling Ni
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
| | - Chen Dong
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing 100084, China
- Shanghai Immune Therapy Institute, New Cornerstone Science Laboratory, Shanghai Jiao Tong University School of Medicine-Affiliated Renji Hospital, Shanghai 200127, China
- Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China
- Research Unit of Immune Regulation and Immune Diseases of Chinese Academy of Medical Sciences, Shanghai Jiao Tong University School of Medicine-Affiliated Renji Hospital, Shanghai 200127, China
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Zhou W, Geng H, Huang Y, Shi S, Wang Z, Wang D. Mechanism of BLIMP1/TRIM66/COX2 in human decidua participates in parturition†. Biol Reprod 2023; 109:507-519. [PMID: 37515773 DOI: 10.1093/biolre/ioad081] [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: 02/17/2023] [Revised: 06/09/2023] [Accepted: 07/20/2023] [Indexed: 07/31/2023] Open
Abstract
The mechanism underlying the initiation of parturition remains unclear. Cyclooxygenase 2 and prostaglandins in decidual membrane tissue play an important role in the "parturition cascade." With the advancement of gestation, the expression of the transcriptional suppressor B lymphocyte-induced maturation protein 1 in the decidual membrane gradually decreases. Through chromatin immunoprecipitation sequencing, we found that B lymphocyte-induced maturation protein 1 has a binding site in the distal intergenic of PTGS2(COX2). Tripartite motif-containing protein 66 is a chromatin-binding protein that usually performs transcriptional regulatory functions by "reading" histone modification sites in chromatin. In this study, tripartite motif-containing protein 66 exhibits the same trend of expression as B lymphocyte-induced maturation protein 1 in the decidua during gestation. Moreover, the co-immunoprecipitation assay revealed that tripartite motif-containing protein 66 combined with B lymphocyte-induced maturation protein 1. This finding indicated that tripartite motif-containing protein 66 formed a transcription complex with B lymphocyte-induced maturation protein 1, which coregulated the expression of COX2. In animal experiments, we injected si-Blimp1 adenoviruses (si-Blimp1), Blimp1 overexpression plasmid (Blimp1-OE), and Trim66 overexpression plasmid (Trim66-OE) through the tail vein of mice. The results showed that B lymphocyte-induced maturation protein 1 and tripartite motif-containing protein 66 affected the initiation of parturition in mice. Therefore, the present evidence suggests that B lymphocyte-induced maturation protein 1 and tripartite motif-containing protein 66 partially participate in the initiation of labor, which may provide a new perspective for exploring the mechanism of term labor.
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Affiliation(s)
- Wei Zhou
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Huizhen Geng
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yihong Huang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shaole Shi
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zilian Wang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Dongyu Wang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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9
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Xie X, Doody GM, Shuweihdi F, Conaghan PG, Ponchel F. B-cell capacity for expansion and differentiation into plasma cells are altered in osteoarthritis. Osteoarthritis Cartilage 2023; 31:1176-1188. [PMID: 37290499 DOI: 10.1016/j.joca.2023.03.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 01/30/2023] [Accepted: 03/04/2023] [Indexed: 06/10/2023]
Abstract
OBJECTIVE Autoantibody (autoAbs) production in osteoarthritis (OA), coupled with evidence of disturbed B-cell homoeostasis, suggest a potential role for B-cells in OA. B-cells can differentiate with T-cell help (T-dep) or using alternative Toll like recptor (TLR) co-stimulation (TLR-dep). We analysed the capacity for differentiation of B-cells in OA versus age-matched healthy controls (HCs) and compared the capacity of OA synovitis-derived stromal cells to provide support for plasma cell (PC) maturation. METHODS B-cells were isolated from OA and HC. Standardised in vitro models of B-cell differentiation were used comparing T-dep (CD40 (cluster of differentiation-40/BCR (B-cell receptor)-ligation) versus TLR-dep (TLR7/BCR-activation). Differentiation marker expression was analysed by flow-cytometry; antibody secretion (immunnoglobulins IgM/IgA/IgG) by ELISA (enzyme-linked immunosorbent assay), gene expression by qPCR (quantitative polymerase chain reaction). RESULTS Compared to HC, circulating OA B-cells showed an overall more mature phenotype. The gene expression profile of synovial OA B-cells resembled that of PCs. Circulating B-cells differentiated under both TLR-dep and T-dep, however OA B-cells executed differentiation faster in terms of change in surface marker and secreted more antibody at Day 6, while resulting in similar PC numbers at Day 13, with an altered phenotype at Day 13 in OA. The main difference was reduced early B-cells expansion in OA (notably in TLR-dep) and reduced cell death. Stromal cells support from OA-synovitis allowed better PC survival compared to bone marrow, with an additional population of cells and higher Ig-secretion. CONCLUSION Our findings suggest that OA B-cells present an altered capacity for proliferation and differentiation while remaining able to produce antibodies, notably in synovium. These findings may partly contribute to autoAbs development as recently observed in OA synovial fluids.
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Affiliation(s)
- Xuanxiao Xie
- Translational Research in Immune Mediated Inflammatory Disease, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK.
| | - Gina M Doody
- Division of Haematology and Immunology, Leeds Institute of Medical Research, University of Leeds, Leeds, UK.
| | - Farag Shuweihdi
- Leeds Institute of Health Sciences, School of Medicine, University of Leeds, Leeds, UK.
| | - Philip G Conaghan
- Translational Research in Immune Mediated Inflammatory Disease, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Division of Haematology and Immunology, Leeds Institute of Medical Research, University of Leeds, Leeds, UK; Leeds Institute of Health Sciences, School of Medicine, University of Leeds, Leeds, UK; The NIHR Leeds Biomedical Research Centre, Leeds Teaching Hospital Trust, Leeds, UK.
| | - Frederique Ponchel
- Translational Research in Immune Mediated Inflammatory Disease, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Division of Haematology and Immunology, Leeds Institute of Medical Research, University of Leeds, Leeds, UK; Leeds Institute of Health Sciences, School of Medicine, University of Leeds, Leeds, UK; The NIHR Leeds Biomedical Research Centre, Leeds Teaching Hospital Trust, Leeds, UK.
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10
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Guldenpfennig C, Teixeiro E, Daniels M. NF-kB's contribution to B cell fate decisions. Front Immunol 2023; 14:1214095. [PMID: 37533858 PMCID: PMC10391175 DOI: 10.3389/fimmu.2023.1214095] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/03/2023] [Indexed: 08/04/2023] Open
Abstract
NF-κB signaling is essential to an effective innate and adaptive immune response. Many immune-specific functional and developmental outcomes depend in large on NF-κB. The formidable task of sorting out the mechanisms behind the regulation and outcome of NF-κB signaling remains an important area of immunology research. Here we briefly discuss the role of NF-κB in regulating cell fate decisions at various times in the path of B cell development, activation, and the generation of long-term humoral immunity.
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Affiliation(s)
- Caitlyn Guldenpfennig
- Molecular Microbiology and Immunology, University of Missouri, Columbia, MO, United States
- NextGen Precision Health, University of Missouri, Columbia, MO, United States
| | - Emma Teixeiro
- Molecular Microbiology and Immunology, University of Missouri, Columbia, MO, United States
- NextGen Precision Health, University of Missouri, Columbia, MO, United States
| | - Mark Daniels
- Molecular Microbiology and Immunology, University of Missouri, Columbia, MO, United States
- NextGen Precision Health, University of Missouri, Columbia, MO, United States
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11
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da Costa LCO, Gardinassi LG, Veras FP, Milanezi C, Ramalho LNZ, Benevides L, Alves-Filho JC, da Silva JS, da Silva Souza C. Expression of B lymphocyte-induced maturation protein 1 (Blimp-1) in keratinocyte and cytokine signalling drives human Th17 response in psoriasis. Arch Dermatol Res 2023; 315:481-490. [PMID: 36042041 DOI: 10.1007/s00403-022-02379-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 06/30/2022] [Accepted: 08/01/2022] [Indexed: 11/02/2022]
Abstract
Transcriptional factor B lymphocyte-induced maturation protein 1 (Blimp-1) is pivotally implicated in T helper 17 (Th17) cell differentiation. This study investigated expression of the Blimp-1 protein, positive regulatory domain 1 (PRDM1), and cytokine genes in psoriasis (PsO). Affected (AS-PsO) and non-affected skin (nAS-PsO) samples were used to assess gene and protein expressions by reverse transcription-quantitative PCR (RT-qPCR), and immunostaining and confocal microscopy, respectively; the normalised public transcriptomic data permitted differential gene expression analyses. On RT-qPCR, PRDM1 and IL17A transcripts showed higher expression in AS-PsO than in nAS-PsO (n = 34) (p < 0.001; p < 0.0001, respectively). Confocal microscopy showed Blimp-1 protein expression in epidermal layer keratinocytes in AS-PsO, but not in nAS-PsO. Bioinformatic analysis of the transcriptomic dataset GSE13355 corroborated the increased PRDM1, signal transducer and activator of transcription 3 (STAT3), IL12B, TNF, IL17A, IL6, IL1B, IL22, and IL10 gene expression in AS-PsO, when compared to normal skin and nAS-PsO (p < 0.001). PRDM1 expression correlated positively (p < 0.0001) with that of IL17A (r = 0.7), IL1B (r = 0.67), IL12B (r = 0.6), IL6 (r = 0.59), IL22 (r = 0.53), IL23A (r = 0.47), IL21 (r = 0.47), IL27 (r = 0.34), IL23R (r = 0.32), S100 calcium binding protein A9 (r = 0.63), and lipocalin 2 (r = 0.50), and negatively with that of TGFB1 (r = - 0.28) and RORC (r = - 0.60). Blimp-1 may be critical in the pathogenesis of PsO dysregulation involving the Th17 inflammatory pathway. This knowledge may accelerate the development of new treatments.
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Affiliation(s)
- Lorena Carla Oliveira da Costa
- Dermatology Division, Department of Internal Medicine, Ribeirão Preto Medical School, Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre, Ribeirão Preto, São Paulo, 14048-900, Brazil
| | - Luiz Gustavo Gardinassi
- Department of Biosciences and Technology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Flávio Protásio Veras
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Cristiane Milanezi
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | | | - Luciana Benevides
- Fiocruz-Bi-Institutional Translational Medicine Plataform, Ribeirão Preto, São Paulo, Brazil
| | - José Carlos Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - João Santana da Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Fiocruz-Bi-Institutional Translational Medicine Plataform, Ribeirão Preto, São Paulo, Brazil
| | - Cacilda da Silva Souza
- Dermatology Division, Department of Internal Medicine, Ribeirão Preto Medical School, Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto, University of São Paulo, Av. Bandeirantes, 3900, Monte Alegre, Ribeirão Preto, São Paulo, 14048-900, Brazil.
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12
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Di Zazzo E, Rienzo M, Casamassimi A, De Rosa C, Medici N, Gazzerro P, Bifulco M, Abbondanza C. Exploring the putative role of PRDM1 and PRDM2 transcripts as mediators of T lymphocyte activation. J Transl Med 2023; 21:217. [PMID: 36964555 PMCID: PMC10039509 DOI: 10.1186/s12967-023-04066-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 03/17/2023] [Indexed: 03/26/2023] Open
Abstract
BACKGROUND T cell activation and programming from their naïve/resting state, characterized by widespread modifications in chromatin accessibility triggering extensive changes in transcriptional programs, is orchestrated by several cytokines and transcription regulators. PRDM1 and PRDM2 encode for proteins with PR/SET and zinc finger domains that control several biological processes, including cell differentiation, through epigenetic regulation of gene expression. Different transcripts leading to main protein isoforms with (PR +) or without (PR-) the PR/SET domain have been described. Although many studies have established the critical PRDM1 role in hematopoietic cell differentiation, maintenance and/or function, the single transcript contribution has not been investigated before. Otherwise, very few evidence is currently available on PRDM2. Here, we aimed to analyze the role of PRDM1 and PRDM2 different transcripts as mediators of T lymphocyte activation. METHODS We analyzed the transcription signature of the main variants from PRDM1 (BLIMP1a and BLIMP1b) and PRDM2 (RIZ1 and RIZ2) genes, in human T lymphocytes and Jurkat cells overexpressing PRDM2 cDNAs following activation through different signals. RESULTS T lymphocyte activation induced an early increase of RIZ2 and RIZ1 followed by BLIMP1b increase and finally by BLIMP1a increase. The "first" and the "second" signals shifted the balance towards the PR- forms for both genes. Interestingly, the PI3K signaling pathway modulated the RIZ1/RIZ2 ratio in favor of RIZ1 while the balance versus RIZ2 was promoted by MAPK pathway. Cytokines mediating different Jak/Stat signaling pathways (third signal) early modulated the expression of PRDM1 and PRDM2 and the relationship of their different transcripts confirming the early increase of the PR- transcripts. Different responses of T cell subpopulations were also observed. Jurkat cells showed that the acute transient RIZ2 increase promoted the balancing of PRDM1 forms towards BLIMP1b. The stable forced expression of RIZ1 or RIZ2 induced a significant variation in the expression of key transcription factors involved in T lymphocyte differentiation. The BLIMP1a/b balance shifted in favor of BLIMP1a in RIZ1-overexpressing cells and of BLIMP1b in RIZ2-overexpressing cells. CONCLUSIONS This study provides the first characterization of PRDM2 in T-lymphocyte activation/differentiation and novel insights on PRDM1 and PRDM2 transcription regulation during initial activation phases.
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Affiliation(s)
- Erika Di Zazzo
- Department of Medicine and Health Sciences "V. Tiberio", University of Molise, 86100, Campobasso, Italy
| | - Monica Rienzo
- Department of Environmental, Biological, and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", 81100, Caserta, Italy
| | - Amelia Casamassimi
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", 80138, Naples, Italy
| | - Caterina De Rosa
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", 80138, Naples, Italy
| | - Nicola Medici
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", 80138, Naples, Italy
| | - Patrizia Gazzerro
- Department of Pharmacy, University of Salerno, 84084, Salerno, Fisciano (SA), Italy
| | - Maurizio Bifulco
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples "Federico II", 80131, Naples, Italy
| | - Ciro Abbondanza
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", 80138, Naples, Italy.
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13
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Sarhan M, Miyagawa K, Ueda H. Domain analysis of Drosophila Blimp-1 reveals the importance of its repression function and instability in determining pupation timing. Genes Cells 2023; 28:338-347. [PMID: 36852536 DOI: 10.1111/gtc.13020] [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: 12/27/2022] [Revised: 02/15/2023] [Accepted: 02/15/2023] [Indexed: 03/01/2023]
Abstract
The PRDM family transcription repressor Blimp-1 is present in almost all multicellular organisms and plays important roles in various developmental processes. This factor has several conserved motifs among different species, but the function of each motif is unclear. Drosophila Blimp-1 plays an important role in determining pupation timing by acting as an unstable transcriptional repressor of the βftz-f1 gene. Thus, Drosophila provides a good system for analyzing the molecular and biological functions of each region in Blimp-1. Various Blimp-1 mutants carrying deletions at the conserved motifs were induced under the control of the heat shock promoter in prepupae, and the expression patterns of βFTZ-F1 and Blimp-1 and pupation timing were observed. The results showed that the regions with strong and weak repressor functions exist within the proline-rich middle section of the factor and near the N-terminal conserved motif, respectively. Rapid degradation was supported by multiple regions that were mainly located in a large proline-rich region. Results revealed that pupation timing was affected by the repression ability and stability of Blimp-1. This suggests that both the repression function and instability of Blimp-1 are indispensable for the precise determination of pupation timing.
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Affiliation(s)
- Moustafa Sarhan
- The Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
| | - Koichi Miyagawa
- The Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
| | - Hitoshi Ueda
- The Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan.,Department of Biology, Faculty of Science, Okayama University, Okayama, Japan
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14
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Betzler AC, Ushmorov A, Brunner C. The transcriptional program during germinal center reaction - a close view at GC B cells, Tfh cells and Tfr cells. Front Immunol 2023; 14:1125503. [PMID: 36817488 PMCID: PMC9936310 DOI: 10.3389/fimmu.2023.1125503] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 01/24/2023] [Indexed: 02/05/2023] Open
Abstract
The germinal center (GC) reaction is a key process during an adaptive immune response to T cell specific antigens. GCs are specialized structures within secondary lymphoid organs, in which B cell proliferation, somatic hypermutation and antibody affinity maturation occur. As a result, high affinity antibody secreting plasma cells and memory B cells are generated. An effective GC response needs interaction between multiple cell types. Besides reticular cells and follicular dendritic cells, particularly B cells, T follicular helper (Tfh) cells as well as T follicular regulatory (Tfr) cells are a key player during the GC reaction. Whereas Tfh cells provide help to GC B cells in selection processes, Tfr cells, a specialized subset of regulatory T cells (Tregs), are able to suppress the GC reaction maintaining the balance between immune activation and tolerance. The formation and function of GCs is regulated by a complex network of signals and molecules at multiple levels. In this review, we highlight recent developments in GC biology by focusing on the transcriptional program regulating the GC reaction. This review focuses on the transcriptional co-activator BOB.1/OBF.1, whose important role for GC B, Tfh and Tfr cell differentiation became increasingly clear in recent years. Moreover, we outline how deregulation of the GC transcriptional program can drive lymphomagenesis.
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Affiliation(s)
- Annika C. Betzler
- Department of Oto-Rhino-Laryngology, Ulm University Medical Center, Ulm, Germany
| | - Alexey Ushmorov
- Ulm University, Institute of Physiological Chemistry, Ulm, Germany
| | - Cornelia Brunner
- Department of Oto-Rhino-Laryngology, Ulm University Medical Center, Ulm, Germany,*Correspondence: Cornelia Brunner,
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15
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Flümann R, Hansen J, Pelzer BW, Nieper P, Lohmann T, Kisis I, Riet T, Kohlhas V, Nguyen PH, Peifer M, Abedpour N, Bosco G, Thomas RK, Kochanek M, Knüfer J, Jonigkeit L, Beleggia F, Holzem A, Büttner R, Lohneis P, Meinel J, Ortmann M, Persigehl T, Hallek M, Calado DP, Chmielewski M, Klein S, Göthert JR, Chapuy B, Zevnik B, Wunderlich FT, von Tresckow B, Jachimowicz RD, Melnick AM, Reinhardt HC, Knittel G. Distinct Genetically Determined Origins of Myd88/BCL2-Driven Aggressive Lymphoma Rationalize Targeted Therapeutic Intervention Strategies. Blood Cancer Discov 2023; 4:78-97. [PMID: 36346827 PMCID: PMC9816818 DOI: 10.1158/2643-3230.bcd-22-0007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 10/06/2022] [Accepted: 11/04/2022] [Indexed: 11/11/2022] Open
Abstract
Genomic profiling revealed the identity of at least 5 subtypes of diffuse large B-cell lymphoma (DLBCL), including the MCD/C5 cluster characterized by aberrations in MYD88, BCL2, PRDM1, and/or SPIB. We generated mouse models harboring B cell-specific Prdm1 or Spib aberrations on the background of oncogenic Myd88 and Bcl2 lesions. We deployed whole-exome sequencing, transcriptome, flow-cytometry, and mass cytometry analyses to demonstrate that Prdm1- or Spib-altered lymphomas display molecular features consistent with prememory B cells and light-zone B cells, whereas lymphomas lacking these alterations were enriched for late light-zone and plasmablast-associated gene sets. Consistent with the phenotypic evidence for increased B cell receptor signaling activity in Prdm1-altered lymphomas, we demonstrate that combined BTK/BCL2 inhibition displays therapeutic activity in mice and in five of six relapsed/refractory DLBCL patients. Moreover, Prdm1-altered lymphomas were immunogenic upon transplantation into immuno-competent hosts, displayed an actionable PD-L1 surface expression, and were sensitive to antimurine-CD19-CAR-T cell therapy, in vivo. SIGNIFICANCE Relapsed/refractory DLBCL remains a major medical challenge, and most of these patients succumb to their disease. Here, we generated mouse models, faithfully recapitulating the biology of MYD88-driven human DLBCL. These models revealed robust preclinical activity of combined BTK/BCL2 inhibition. We confirmed activity of this regimen in pretreated non-GCB-DLBCL patients. See related commentary by Leveille et al., p. 8. This article is highlighted in the In This Issue feature, p. 1.
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Affiliation(s)
- Ruth Flümann
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Response in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Mildred Scheel School of Oncology, Aachen Bonn Cologne Düsseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Julia Hansen
- Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Benedikt W. Pelzer
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Mildred Scheel School of Oncology, Aachen Bonn Cologne Düsseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medicine, Cornell University, New York, New York
| | - Pascal Nieper
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Response in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Mildred Scheel School of Oncology, Aachen Bonn Cologne Düsseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Tim Lohmann
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Response in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Mildred Scheel School of Oncology, Aachen Bonn Cologne Düsseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Ilmars Kisis
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Response in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Mildred Scheel School of Oncology, Aachen Bonn Cologne Düsseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Department of Translational Genomics, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Tobias Riet
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
| | - Viktoria Kohlhas
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Response in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Phuong-Hien Nguyen
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Response in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Martin Peifer
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
- Department of Translational Genomics, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Nima Abedpour
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
- Department of Translational Genomics, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Graziella Bosco
- Department of Translational Genomics, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Roman K. Thomas
- Department of Translational Genomics, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Moritz Kochanek
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Jacqueline Knüfer
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Lorenz Jonigkeit
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Filippo Beleggia
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Response in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Mildred Scheel School of Oncology, Aachen Bonn Cologne Düsseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Department of Translational Genomics, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Alessandra Holzem
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Response in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Mildred Scheel School of Oncology, Aachen Bonn Cologne Düsseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Reinhard Büttner
- Institute of Pathology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Philipp Lohneis
- Institute of Pathology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Jörn Meinel
- Institute of Pathology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Monika Ortmann
- Institute of Pathology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Thorsten Persigehl
- Department of Radiology and Interventional Radiology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Michael Hallek
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Response in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Mildred Scheel School of Oncology, Aachen Bonn Cologne Düsseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | | | - Markus Chmielewski
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
| | - Sebastian Klein
- Department of Hematology and Stem Cell Transplantation, University Hospital Essen, University Duisburg-Essen, West German Cancer Center, German Cancer Consortium (DKTK partner site Essen), Center for Molecular Biotechnology, Essen, Germany
| | - Joachim R. Göthert
- Department of Hematology and Stem Cell Transplantation, University Hospital Essen, University Duisburg-Essen, West German Cancer Center, German Cancer Consortium (DKTK partner site Essen), Center for Molecular Biotechnology, Essen, Germany
| | - Bjoern Chapuy
- Department of Hematology, Oncology and Tumorimmunology, Charité, University Medical Center Berlin, Campus Benjamin Franklin, Berlin, Germany
| | - Branko Zevnik
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
| | - F. Thomas Wunderlich
- Department of Neuronal Control of Metabolism, Max Planck Institute for Metabolism Research, Cologne, Germany
| | - Bastian von Tresckow
- Department of Hematology and Stem Cell Transplantation, University Hospital Essen, University Duisburg-Essen, West German Cancer Center, German Cancer Consortium (DKTK partner site Essen), Center for Molecular Biotechnology, Essen, Germany
| | - Ron D. Jachimowicz
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Duesseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Response in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Mildred Scheel School of Oncology, Aachen Bonn Cologne Düsseldorf, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
- Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Ari M. Melnick
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medicine, Cornell University, New York, New York
| | - Hans Christian Reinhardt
- Department of Hematology and Stem Cell Transplantation, University Hospital Essen, University Duisburg-Essen, West German Cancer Center, German Cancer Consortium (DKTK partner site Essen), Center for Molecular Biotechnology, Essen, Germany
| | - Gero Knittel
- Department of Hematology and Stem Cell Transplantation, University Hospital Essen, University Duisburg-Essen, West German Cancer Center, German Cancer Consortium (DKTK partner site Essen), Center for Molecular Biotechnology, Essen, Germany
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16
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Legrand JMD, Hobbs RM. Defining Gene Function in Spermatogonial Stem Cells Through Conditional Knockout Approaches. Methods Mol Biol 2023; 2656:261-307. [PMID: 37249877 DOI: 10.1007/978-1-0716-3139-3_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Mammalian male fertility is maintained throughout life by a population of self-renewing mitotic germ cells known as spermatogonial stem cells (SSCs). Much of our current understanding regarding the molecular mechanisms underlying SSC activity is derived from studies using conditional knockout mouse models. Here, we provide a guide for the selection and use of mouse strains to develop conditional knockout models for the study of SSCs, as well as their precursors and differentiation-committed progeny. We describe Cre recombinase-expressing strains, breeding strategies to generate experimental groups, and treatment regimens for inducible knockout models and provide advice for verifying and improving conditional knockout efficiency. This resource can be beneficial to those aiming to develop conditional knockout models for the study of SSC development and postnatal function.
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Affiliation(s)
- Julien M D Legrand
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia
- Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia
| | - Robin M Hobbs
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia.
- Department of Molecular and Translational Sciences, Monash University, Clayton, VIC, Australia.
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17
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A p38α-BLIMP1 signalling pathway is essential for plasma cell differentiation. Nat Commun 2022; 13:7321. [PMID: 36443297 PMCID: PMC9703440 DOI: 10.1038/s41467-022-34969-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 11/11/2022] [Indexed: 11/29/2022] Open
Abstract
Plasma cells (PC) are antibody-secreting cells and terminal effectors in humoral responses. PCs differentiate directly from activated B cells in response to T cell-independent (TI) antigens or from germinal center B (GCB) cells in T cell-dependent (TD) antigen-induced humoral responses, both of which pathways are essentially regulated by the transcription factor BLIMP1. The p38 mitogen-activated protein kinase isoforms have already been implicated in B cell development, but the precise role of p38α in B cell differentiation is still largely unknown. Here we show that PC differentiation and antibody responses are severely impaired in mice with B cell-specific deletion of p38α, while B cell development and the GCB cell response are spared. By utilizing a Blimp1 reporter mouse model, we show that p38α-deficiency results in decreased BLIMP1 expression. p38α-driven BLIMP1 up-regulation is required for both TI and TD PCs differentiation. By combining CRISPR/Cas9 screening and other approaches, we identify TCF3, TCF4 and IRF4 as downstream effectors of p38α to control PC differentiation via Blimp1 transcription. This study thus identifies an important signalling pathway underpinning PC differentiation upstream of BLIMP1, and points to a highly specialized and non-redundant role for p38α among p38 isoforms.
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Föh B, Buhre JS, Sina C, Ehlers M. Influence of nutrients and metabolites on the differentiation of plasma cells and implications for autoimmunity. Front Immunol 2022; 13:1004644. [DOI: 10.3389/fimmu.2022.1004644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 11/04/2022] [Indexed: 11/21/2022] Open
Abstract
The modulation of inflammatory (auto)immune reactions by nutrients and gut bacterial metabolites is of great interest for potential preventive and therapeutic strategies. B cell-derived plasma cells are major players in inflammatory (auto)immune responses and can exhibit pro- or anti-inflammatory effects through (auto)antibody-dependent and -independent functions. Emerging evidence indicates a key role of nutrients and microbial metabolites in regulating the differentiation of plasma cells as well as their differentiation to pro- or anti-inflammatory phenotypes. These effects might be mediated indirectly by influencing other immune cells or directly through B cell-intrinsic mechanisms. Here, we provide an overview of nutrients and metabolites that influence B cell-intrinsic signaling pathways regulating B cell activation, plasma cell differentiation, and effector functions. Furthermore, we outline important inflammatory plasma cell phenotypes whose differentiation could be targeted by nutrients and microbial metabolites. Finally, we discuss possible implications for inflammatory (auto)immune conditions.
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19
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Tang TF, Chan YT, Cheong HC, Cheok YY, Anuar NA, Looi CY, Gan GG, Wong WF. Regulatory network of BLIMP1, IRF4, and XBP1 triad in plasmacytic differentiation and multiple myeloma pathogenesis. Cell Immunol 2022; 380:104594. [PMID: 36081178 DOI: 10.1016/j.cellimm.2022.104594] [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: 07/02/2022] [Revised: 08/25/2022] [Accepted: 08/30/2022] [Indexed: 11/27/2022]
Abstract
Antibody secreting plasma cell plays an indispensable role in humoral immunity. As activated B cell undergoes germinal center reaction and develops into plasma cell, it gradually loses B cell characteristics and embraces functional changes associated with immunoglobulins production. Differentiation of B cell into plasma cell involves drastic changes in cell structure, granularity, metabolism, gene expression and epigenetic regulation that couple with the mounting capacity for synthesis of a large quantity of antigen-specific antibodies. The interplay between three hallmark transcriptional regulators IRF4, BLIMP1, and XBP1, is critical for supporting the cellular reprograming activities during B to plasma cell transition. IRF4 promotes plasma cell generation by directing immunoglobulin class switching, proliferation and survival; BLIMP1 serves as a transcriptional repressor that extinguishes B cell features; whereas XBP1 controls unfolded protein response that relieves endoplasmic reticulum stress and permits antibody release during terminal differentiation. Intriguingly, high expression of IRF4, BLIMP1, and XBP1 molecules have been reported in myeloma cells derived from multiple myeloma patients, which negatively impact treatment outcome, prognosis, and relapse frequency. Despite the introduction of immunomodulatory drugs in recent years, multiple myeloma is still an incurable disease with poor survival rate. An in-depth review of IRF4, BLIMP1, and XBP1 triad molecules in plasma cell generation and multiple myeloma tumorigenesis may provide clues to the possibility of targeting these molecules in disease management.
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Affiliation(s)
- Ting Fang Tang
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Yee Teng Chan
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Heng Choon Cheong
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Yi Ying Cheok
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Nur Adila Anuar
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Chung Yeng Looi
- School of Bioscience, Taylor's University, 47500 Subang Jaya, Selangor, Malaysia
| | - Gin Gin Gan
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Won Fen Wong
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.
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20
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Jia X, Bene J, Balázs N, Szabó K, Berta G, Herczeg R, Gyenesei A, Balogh P. Age-Associated B Cell Features of the Murine High-Grade B Cell Lymphoma Bc.DLFL1 and Its Extranodal Expansion in Abdominal Adipose Tissues. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 208:2866-2876. [PMID: 35867673 DOI: 10.4049/jimmunol.2100956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 04/16/2022] [Indexed: 11/19/2022]
Abstract
Diffuse large B cell lymphoma comprises a heterogeneous group of B cell-derived tumors, with different degrees of aggressiveness, as defined by their cellular origin and tissue microenvironment. Using the spontaneous Bc.DLFL1 lymphoma originating from a BALB/c mouse as a diffuse large B cell lymphoma model, in this study we demonstrate that the lymphoma cells display surface phenotype, IgH V-region somatic mutations, transcription factor characteristics and in vivo location to splenic extrafollicular regions of age-associated B cells (ABCs), corresponding to T-bet+ and Blimp-1+/CD138- plasmablasts derivation. The expansion of lymphoma cells within lymphoid tissues took place in a close arrangement with CD11c+ dendritic cells, whereas the extranodal infiltration occurred selectively in the mesentery and omentum containing resident gp38/podoplanin+ fibroblastic reticular cells. Antagonizing BAFF-R activity by mBR3-Fc soluble receptor fusion protein led to a significant delay of disease progression. The extranodal expansion of Bc.DLFL1 lymphoma within the omental and mesenteric adipose tissues was coupled with a significant change of the tissue cytokine landscape, including both shared alterations and tissue-specific variations. Our findings indicate that while Bc.DLFL1 cells of ABC origin retain the positioning pattern within lymphoid tissues of their physiological counterpart, they also expand in non-lymphoid tissues in a BAFF-dependent manner, where they may alter the adipose tissue microenvironment to support their extranodal growth.
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Affiliation(s)
- Xinkai Jia
- Department of Immunology and Biotechnology, Clinical Center, University of Pécs, Pécs, Hungary
- Lymphoid Organogenesis Research Group, Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Judit Bene
- Department of Medical Genetics, Clinical Center, University of Pécs, Pécs, Hungary
| | - Noémi Balázs
- Department of Immunology and Biotechnology, Clinical Center, University of Pécs, Pécs, Hungary
| | - Katalin Szabó
- Department of Immunology and Biotechnology, Clinical Center, University of Pécs, Pécs, Hungary
| | - Gergely Berta
- Department of Medical Biology and Central Electron Microscope Laboratory, Medical School, University of Pécs, Pécs, Hungary; and
| | - Róbert Herczeg
- Bioinformatics Research Group, Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Attila Gyenesei
- Bioinformatics Research Group, Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Péter Balogh
- Department of Immunology and Biotechnology, Clinical Center, University of Pécs, Pécs, Hungary;
- Lymphoid Organogenesis Research Group, Szentágothai Research Center, University of Pécs, Pécs, Hungary
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21
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McNamara HA, Lahoud MH, Cai Y, Durrant-Whyte J, O'Connor JH, Caminschi I, Cockburn IA. Splenic Dendritic Cells and Macrophages Drive B Cells to Adopt a Plasmablast Cell Fate. Front Immunol 2022; 13:825207. [PMID: 35493521 PMCID: PMC9039241 DOI: 10.3389/fimmu.2022.825207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 03/14/2022] [Indexed: 11/13/2022] Open
Abstract
Upon encountering cognate antigen, B cells can differentiate into short-lived plasmablasts, early memory B cells or germinal center B cells. The factors that determine this fate decision are unclear. Past studies have addressed the role of B cell receptor affinity in this process, but the interplay with other cellular compartments for fate determination is less well understood. Moreover, B cell fate decisions have primarily been studied using model antigens rather than complex pathogen systems, which potentially ignore multifaceted interactions from other cells subsets during infection. Here we address this question using a Plasmodium infection model, examining the response of B cells specific for the immunodominant circumsporozoite protein (CSP). We show that B cell fate is determined in part by the organ environment in which priming occurs, with the majority of the CSP-specific B cell response being derived from splenic plasmablasts. This plasmablast response could occur independent of T cell help, though gamma-delta T cells were required to help with the early isotype switching from IgM to IgG. Interestingly, selective ablation of CD11c+ dendritic cells and macrophages significantly reduced the splenic plasmablast response in a manner independent of the presence of CD4 T cell help. Conversely, immunization approaches that targeted CSP-antigen to dendritic cells enhanced the magnitude of the plasmablast response. Altogether, these data indicate that the early CSP-specific response is predominately primed within the spleen and the plasmablast fate of CSP-specific B cells is driven by macrophages and CD11c+ dendritic cells.
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Affiliation(s)
- Hayley A McNamara
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia.,Division of Animal Physiology and Immunology, School of Life Sciences Weihenstephan, Technical University of Munich, Freising, Germany
| | - Mireille H Lahoud
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Yeping Cai
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Jessica Durrant-Whyte
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - James H O'Connor
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Irina Caminschi
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Ian A Cockburn
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
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22
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Li J, Wang Q, An Y, Chen X, Xing Y, Deng Q, Li Z, Wang S, Dai X, Liang N, Hou Y, Yang H, Shang Z. Integrative Single-Cell RNA-Seq and ATAC-Seq Analysis of Mesenchymal Stem/Stromal Cells Derived from Human Placenta. Front Cell Dev Biol 2022; 10:836887. [PMID: 35450295 PMCID: PMC9017713 DOI: 10.3389/fcell.2022.836887] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 02/09/2022] [Indexed: 12/20/2022] Open
Abstract
Mesenchymal stem/stromal cells derived from placenta (PMSCs) are an attractive source for regenerative medicine because of their multidifferentiation potential and immunomodulatory capabilities. However, the cellular and molecular heterogeneity of PMSCs has not been fully characterized. Here, we applied single-cell RNA sequencing (scRNA-seq) and assay for transposase-accessible chromatin sequencing (scATAC-seq) techniques to cultured PMSCs from human full-term placenta. Based on the inferred characteristics of cell clusters, we identify several distinct subsets of PMSCs with specific characteristics, including immunomodulatory-potential and highly proliferative cell states. Furthermore, integrative analysis of gene expression and chromatin accessibility showed a clearer chromatin accessibility signature than those at the transcriptional level on immunomodulatory-related genes. Cell cycle gene-related heterogeneity can be more easily distinguished at the transcriptional than the chromatin accessibility level in PMSCs. We further reveal putative subset-specific cis-regulatory elements regulating the expression of immunomodulatory- and proliferation-related genes in the immunomodulatory-potential and proliferative subpopulations, respectively. Moreover, we infer a novel transcription factor PRDM1, which might play a crucial role in maintaining immunomodulatory capability by activating PRDM1-regulon loop. Collectively, our study first provides a comprehensive and integrative view of the transcriptomic and epigenomic features of PMSCs, which paves the way for a deeper understanding of cellular heterogeneity and offers fundamental biological insight of PMSC subset-based cell therapy.
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Affiliation(s)
- Jinlu Li
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
| | - Quanlei Wang
- BGI-Shenzhen, Shenzhen, China
- Key Laboratory of Regenerative Medicine of Ministry of Education, Biology Postdoctoral Research Station, Jinan University, Guangzhou, China
| | | | | | - Yanan Xing
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
| | - Qiuting Deng
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
| | - Zelong Li
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
| | - Shengpeng Wang
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
| | - Xi Dai
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
| | | | | | - Huanming Yang
- BGI-Shenzhen, Shenzhen, China
- James D. Watson Institute of Genome Sciences, Hangzhou, China
| | - Zhouchun Shang
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI-Shenzhen, Shenzhen, China
- BGI College, Northwest University, Xi’an, China
- *Correspondence: Zhouchun Shang,
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23
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The genetic deletion and protein expression of PRDM1 and its clinical implications in diffuse large B cell lymphoma: a retrospective cohort study in China. Pathol Res Pract 2022; 233:153860. [DOI: 10.1016/j.prp.2022.153860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 01/24/2022] [Accepted: 03/25/2022] [Indexed: 11/20/2022]
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24
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Nadeau S, Martins GA. Conserved and Unique Functions of Blimp1 in Immune Cells. Front Immunol 2022; 12:805260. [PMID: 35154079 PMCID: PMC8829541 DOI: 10.3389/fimmu.2021.805260] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 12/21/2021] [Indexed: 12/20/2022] Open
Abstract
B-lymphocyte-induced maturation protein-1 (Blimp1), is an evolutionarily conserved transcriptional regulator originally described as a repressor of gene transcription. Blimp1 crucially regulates embryonic development and terminal differentiation in numerous cell lineages, including immune cells. Initial investigations of Blimp1’s role in immunity established its non-redundant role in lymphocytic terminal effector differentiation and function. In B cells, Blimp1 drives plasmablast formation and antibody secretion, whereas in T cells, Blimp1 regulates functional differentiation, including cytokine gene expression. These studies established Blimp1 as an essential transcriptional regulator that promotes efficient and controlled adaptive immunity. Recent studies have also demonstrated important roles for Blimp1 in innate immune cells, specifically myeloid cells, and Blimp1 has been established as an intrinsic regulator of dendritic cell maturation and T cell priming. Emerging studies have determined both conserved and unique functions of Blimp1 in different immune cell subsets, including the unique direct activation of the igh gene transcription in B cells and a conserved antagonism with BCL6 in B cells, T cells, and myeloid cells. Moreover, polymorphisms associated with the gene encoding Blimp1 (PRDM1) have been linked to numerous chronic inflammatory conditions in humans. Blimp1 has been shown to regulate target gene expression by either competing with other transcription factors for binding to the target loci, and/or by recruiting various chromatin-modifying co-factors that promote suppressive chromatin structure, such as histone de-acetylases and methyl-transferases. Further, Blimp1 function has been shown to be essentially dose and context-dependent, which adds to Blimp1’s versatility as a regulator of gene expression. Here, we review Blimp1’s complex roles in immunity and highlight specific gaps in the understanding of the biology of this transcriptional regulator, with a major focus on aspects that could foster the description and understanding of novel pathways regulated by Blimp1 in the immune system.
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Affiliation(s)
- Samantha Nadeau
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute (IBIRI), Cedars-Sinai Medical Center (CSMC), Los Angeles, CA, United States.,Department of Biomedical Sciences, Research Division of Immunology, Cedars-Sinai Medical Center (CSMC), Los Angeles, CA, United States
| | - Gislâine A Martins
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute (IBIRI), Cedars-Sinai Medical Center (CSMC), Los Angeles, CA, United States.,Department of Biomedical Sciences, Research Division of Immunology, Cedars-Sinai Medical Center (CSMC), Los Angeles, CA, United States.,Department of Medicine, Gastroenterology Division, Cedars-Sinai Medical Center (CSMC), Los Angeles, CA, United States
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25
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Post-transcriptional regulation of factors important for the germ line. Curr Top Dev Biol 2022; 146:49-78. [PMID: 35152986 DOI: 10.1016/bs.ctdb.2021.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Echinoderms are a major model system for many general aspects of biology, including mechanisms of gene regulation. Analysis of transcriptional regulation (Gene regulatory networks, direct DNA-binding of proteins to specific cis-elements, and transgenesis) has contributed to our understanding of how an embryo works. This chapter looks at post-transcriptional gene regulation in the context of how the primordial germ cells are formed, and how the factors essential for this process are regulated. Important in echinoderms, as in many embryos, is that key steps of fate determination are made post-transcriptionally. This chapter highlights these steps uncovered in sea urchins and sea stars, and links them to a general theme of how the germ line may regulate its fate differently than many of the embryo's somatic cell lineages.
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26
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Ma Q, Caillier SJ, Muzic S, Wilson MR, Henry RG, Cree BAC, Hauser SL, Didonna A, Oksenberg JR. Specific hypomethylation programs underpin B cell activation in early multiple sclerosis. Proc Natl Acad Sci U S A 2021; 118:e2111920118. [PMID: 34911760 PMCID: PMC8713784 DOI: 10.1073/pnas.2111920118] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/04/2021] [Indexed: 12/12/2022] Open
Abstract
Epigenetic changes have been consistently detected in different cell types in multiple sclerosis (MS). However, their contribution to MS pathogenesis remains poorly understood partly because of sample heterogeneity and limited coverage of array-based methods. To fill this gap, we conducted a comprehensive analysis of genome-wide DNA methylation patterns in four peripheral immune cell populations isolated from 29 MS patients at clinical disease onset and 24 healthy controls. We show that B cells from new-onset untreated MS cases display more significant methylation changes than other disease-implicated immune cell types, consisting of a global DNA hypomethylation signature. Importantly, 4,933 MS-associated differentially methylated regions in B cells were identified, and this epigenetic signature underlies specific genetic programs involved in B cell differentiation and activation. Integration of the methylome to changes in gene expression and susceptibility-associated regions further indicates that hypomethylated regions are significantly associated with the up-regulation of cell activation transcriptional programs. Altogether, these findings implicate aberrant B cell function in MS etiology.
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Affiliation(s)
- Qin Ma
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, CA 94158
| | - Stacy J Caillier
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, CA 94158
| | - Shaun Muzic
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, CA 94158
| | - Michael R Wilson
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, CA 94158
| | - Roland G Henry
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, CA 94158
| | - Bruce A C Cree
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, CA 94158
| | - Stephen L Hauser
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, CA 94158
| | - Alessandro Didonna
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, CA 94158
| | - Jorge R Oksenberg
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, CA 94158
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27
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Rauschmeier R, Reinhardt A, Gustafsson C, Glaros V, Artemov AV, Dunst J, Taneja R, Adameyko I, Månsson R, Busslinger M, Kreslavsky T. Bhlhe40 function in activated B and TFH cells restrains the GC reaction and prevents lymphomagenesis. J Exp Med 2021; 219:212923. [PMID: 34919144 PMCID: PMC8689665 DOI: 10.1084/jem.20211406] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 11/01/2021] [Accepted: 11/23/2021] [Indexed: 12/22/2022] Open
Abstract
The generation of high-affinity antibodies against pathogens and vaccines requires the germinal center (GC) reaction, which relies on a complex interplay between specialized effector B and CD4 T lymphocytes, the GC B cells and T follicular helper (TFH) cells. Intriguingly, several positive key regulators of the GC reaction are common for both cell types. Here, we report that the transcription factor Bhlhe40 is a crucial cell-intrinsic negative regulator affecting both the B and T cell sides of the GC reaction. In activated CD4 T cells, Bhlhe40 was required to restrain proliferation, thus limiting the number of TFH cells. In B cells, Bhlhe40 executed its function in the first days after immunization by selectively restricting the generation of the earliest GC B cells but not of early memory B cells or plasmablasts. Bhlhe40-deficient mice with progressing age succumbed to a B cell lymphoma characterized by the accumulation of monoclonal GC B-like cells and polyclonal TFH cells in various tissues.
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Affiliation(s)
- René Rauschmeier
- Research Institute of Molecular Pathology, Vienna Biocenter, Vienna, Austria
| | - Annika Reinhardt
- Department of Medicine, Division of Immunology and Allergy, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
- Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Charlotte Gustafsson
- Center for Hematology and Regenerative Medicine, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Vassilis Glaros
- Department of Medicine, Division of Immunology and Allergy, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
- Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Artem V. Artemov
- Department of Neuroimmunology, Medical University of Vienna, Vienna, Austria
- Endocrinology Research Centre, Moscow, Russian Federation
| | - Josefine Dunst
- Department of Medicine, Division of Immunology and Allergy, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
- Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Reshma Taneja
- Department of Physiology, Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Igor Adameyko
- Department of Neuroimmunology, Medical University of Vienna, Vienna, Austria
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Robert Månsson
- Center for Hematology and Regenerative Medicine, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
- Hematology Center, Karolinska University Hospital, Stockholm, Sweden
| | - Meinrad Busslinger
- Research Institute of Molecular Pathology, Vienna Biocenter, Vienna, Austria
| | - Taras Kreslavsky
- Department of Medicine, Division of Immunology and Allergy, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
- Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
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28
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Fu Q, Lee KM, Huai G, Deng K, Agarwal D, Rickert CG, Feeney N, Matheson R, Yang H, LeGuern C, Deng S, Markmann JF. Properties of regulatory B cells regulating B cell targets. Am J Transplant 2021; 21:3847-3857. [PMID: 34327838 PMCID: PMC8639638 DOI: 10.1111/ajt.16772] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 07/09/2021] [Accepted: 07/21/2021] [Indexed: 01/25/2023]
Abstract
Regulatory B cells (Bregs) have shown promise as anti-rejection therapy applied to organ transplantation. However, less is known about their effect on other B cell populations that are involved in chronic graft rejection. We recently uncovered that naïve B cells, stimulated by TLR ligand agonists, converted into B cells with regulatory properties (Bregs-TLR) that prevented allograft rejection. Here, we examine the granular phenotype and regulatory properties of Breg-TLR cells suppressing B cells. Cocultures of Bregs-TLR with LPS-activated B cells showed a dose-dependent suppression of targeted B cell proliferation. Adoptive transfers of Bregs-TLR induced a decline in antibody responses to antigenically disparate skin grafts. The role of Breg BCR specificity in regulation was assessed using B cell-deficient mice replenished with transgenic BCR (OB1) and TCR (OT-II) lymphocytes of matching antigenic specificity. Results indicated that proliferation of OB1 B cells, mediated through help from CD4+ OT-II cells, was suppressed by OB1 Bregs of similar specificity. Transcriptomic analyses indicated that Bregs-TLR suppression is associated with a block in targeted B cell differentiation controlled by PRDM1 (Blimp1). This work uncovered the regulatory properties of a new brand of Breg cells and provided mechanistic insights into potential applications of Breg therapy in transplantation.
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Affiliation(s)
- Qiang Fu
- Organ Transplantation Center, Sichuan Provincial People’s Hospital and School of Medicine, University of Electronic Science and Technology of China, Chengdu, China,Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, USA
| | - Kang Mi Lee
- Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, USA
| | - Guoli Huai
- Organ Transplantation Center, Sichuan Provincial People’s Hospital and School of Medicine, University of Electronic Science and Technology of China, Chengdu, China,Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, USA
| | - Kevin Deng
- Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, USA
| | - Divyansh Agarwal
- Division of Transplantation, Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Charles G. Rickert
- Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, USA
| | - Noel Feeney
- Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, USA
| | - Rudy Matheson
- Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, USA
| | - Hongji Yang
- Organ Transplantation Center, Sichuan Provincial People’s Hospital and School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Christian LeGuern
- Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, USA
| | - Shaoping Deng
- Organ Transplantation Center, Sichuan Provincial People’s Hospital and School of Medicine, University of Electronic Science and Technology of China, Chengdu, China,Corresponding author: James F. Markmann , Shaoping Deng
| | - James F. Markmann
- Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, USA,Corresponding author: James F. Markmann , Shaoping Deng
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Niimi K, Nakae J, Inagaki S, Furuyama T. FOXO1 represses lymphatic valve formation and maintenance via PRDM1. Cell Rep 2021; 37:110048. [PMID: 34852224 DOI: 10.1016/j.celrep.2021.110048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 09/13/2021] [Accepted: 11/02/2021] [Indexed: 01/17/2023] Open
Abstract
Intraluminal lymphatic valves (LVs) contribute to the prevention of lymph backflow and maintain circulatory homeostasis. Several reports have investigated the molecular mechanisms which promote LV formation; however, the way in which they are suppressed is not completely clear. We show that the forkhead transcription factor FOXO1 is a suppressor of LV formation and maintenance in lymphatic endothelial cells. Oscillatory shear stress by bidirectional flow inactivates FOXO1 via Akt phosphorylation, resulting in the upregulation of a subset of LV-specific genes mediated by downregulation of a transcriptional repressor, PRDM1. Mice with an endothelial-specific Foxo1 deletion have an increase in LVs, and overexpression of Foxo1 in mice produces a decrease in LVs. Genetic reduction of PRDM1 rescues the decrease in LV by Foxo1 overexpression. In conclusion, FOXO1 plays a critical role in lymph flow homeostasis by preventing excess LV formation. This gene might be a therapeutic target for lymphatic circulatory abnormalities.
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Affiliation(s)
- Kenta Niimi
- Department of Liberal Arts and Sciences, Kagawa Prefectural University of Health Sciences, Hara 281-1, Mure, Takamatsu, Kagawa 761-0123, Japan
| | - Jun Nakae
- Department of Physiology, International University of Health and Welfare School of Medicine, 4-3 Kozu-no-Mori, Narita 286-8686, Japan
| | - Shinobu Inagaki
- United Graduate School of Child Development, Osaka University, Yamadaoka 2-2, Suita, Osaka, 565-0871, Japan; Department of Physical Therapy, Osaka Yukioka College of Health Science, Sojiji 1-1-41, Ibaraki, Osaka 567-0801, Japan
| | - Tatsuo Furuyama
- Department of Liberal Arts and Sciences, Kagawa Prefectural University of Health Sciences, Hara 281-1, Mure, Takamatsu, Kagawa 761-0123, Japan.
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30
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Jiang HS, Ghose P, Han HF, Wu YZ, Tsai YY, Lin HC, Tseng WC, Wu JC, Shaham S, Wu YC. BLMP-1 promotes developmental cell death in C. elegans by timely repression of ced-9 transcription. Development 2021; 148:dev193995. [PMID: 34541605 PMCID: PMC8572009 DOI: 10.1242/dev.193995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 09/14/2021] [Indexed: 11/20/2022]
Abstract
Programmed cell death (PCD) is a common cell fate in metazoan development. PCD effectors are extensively studied, but how they are temporally regulated is less understood. Here, we report a mechanism controlling tail-spike cell death onset during Caenorhabditis elegans development. We show that the zinc-finger transcription factor BLMP-1, which controls larval development timing, also regulates embryonic tail-spike cell death initiation. BLMP-1 functions upstream of CED-9 and in parallel to DRE-1, another CED-9 and tail-spike cell death regulator. BLMP-1 expression is detected in the tail-spike cell shortly after the cell is born, and blmp-1 mutations promote ced-9-dependent tail-spike cell survival. BLMP-1 binds ced-9 gene regulatory sequences, and inhibits ced-9 transcription just before cell-death onset. BLMP-1 and DRE-1 function together to regulate developmental timing, and their mammalian homologs regulate B-lymphocyte fate. Our results, therefore, identify roles for developmental timing genes in cell-death initiation, and suggest conservation of these functions.
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Affiliation(s)
- Hang-Shiang Jiang
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106216, Taiwan
| | - Piya Ghose
- Laboratory of Developmental Genetics, The Rockefeller University, New York, NY 10065, USA
- Department of Biology, The University of Texas at Arlington, Arlington, TX 76019, USA
| | - Hsiao-Fen Han
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106216, Taiwan
| | - Yun-Zhe Wu
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106216, Taiwan
| | - Ya-Yin Tsai
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106216, Taiwan
| | - Huang-Chin Lin
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106216, Taiwan
| | - Wei-Chin Tseng
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106216, Taiwan
| | - Jui-Ching Wu
- Department of Clinical Laboratory Sciences and Medical Biotechnology, College of Medicine, National Taiwan University, Taipei, 100229, Taiwan
| | - Shai Shaham
- Laboratory of Developmental Genetics, The Rockefeller University, New York, NY 10065, USA
| | - Yi-Chun Wu
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 106216, Taiwan
- Department of Life Science, Center for Systems Biology, and Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, 106216, Taiwan
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 106216, Taiwan
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31
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Imaging of Bone Marrow Plasma Cells and of Their Niches. Methods Mol Biol 2021; 2308:163-176. [PMID: 34057723 DOI: 10.1007/978-1-0716-1425-9_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
Decade-long survival of plasma cells in the bone marrow has long been a puzzling matter. To understand how plasma cells are maintained and supported by survival-niches to account for lifelong antibody production demands new intravital imaging techniques that are able to follow up a single cell and their interaction with other cell types in situ. We achieved to successfully establish longitudinal imaging of the bone marrow (LIMB) that is based on an implantable endoscopic device. In this chapter, basic approaches on how to investigate plasma cell-stroma interaction and surgical implantation procedures are introduced.
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Ricci D, Gidalevitz T, Argon Y. The special unfolded protein response in plasma cells. Immunol Rev 2021; 303:35-51. [PMID: 34368957 DOI: 10.1111/imr.13012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 06/08/2021] [Indexed: 12/11/2022]
Abstract
The high rate of antibody production places considerable metabolic and folding stress on plasma cells (PC). Not surprisingly, they rely on the unfolded protein response (UPR), a universal signaling, and transcriptional network that monitors the health of the secretory pathway and mounts cellular responses to stress. Typically, the UPR utilizes three distinct stress sensors in the ER membrane, each regulating a subset of targets to re-establish homeostasis. PC use a specialized UPR scheme-they preemptively trigger the UPR via developmental signals and suppress two of the sensors, PERK and ATF6, relying on IRE1 alone. The specialized PC UPR program is tuned to the specific needs at every stage of development-from early biogenesis of secretory apparatus, to massive immunoglobulin expression later. Furthermore, the UPR in PC integrates with other pathways essential in a highly secretory cell-mTOR pathway that ensures efficient synthesis, autophagosomes that recycle components of the synthetic machinery, and apoptotic signaling that controls cell fate in the face of excessive folding stress. This specialized PC program is not shared with other secretory cells, for reasons yet to be defined. In this review, we give a perspective into how and why PC need such a unique UPR program.
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Affiliation(s)
- Daniela Ricci
- Department of Pathology and Lab Medicine, The Childrens' Hospital of Philadelphia and the University of Pennsylvania, Philadelphia, PA, USA
| | - Tali Gidalevitz
- Department of Biology, Drexel University, Philadelphia, PA, USA
| | - Yair Argon
- Department of Pathology and Lab Medicine, The Childrens' Hospital of Philadelphia and the University of Pennsylvania, Philadelphia, PA, USA
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Rakhra G, Rakhra G. Zinc finger proteins: insights into the transcriptional and post transcriptional regulation of immune response. Mol Biol Rep 2021; 48:5735-5743. [PMID: 34304391 PMCID: PMC8310398 DOI: 10.1007/s11033-021-06556-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 07/08/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND Zinc finger proteins encompass one of the unique and large families of proteins with diversified biological functions in the human body. These proteins are primarily considered to be DNA binding transcription factors; however, owing to the diverse array of zinc-finger domains, they are able to interact with molecules other than DNA like RNA, proteins, lipids and PAR (poly-ADP-ribose). Evidences from recent scientific studies have provided an insight into the potential functions of zinc finger proteins in immune system regulation both at the transcriptional and post transcriptional level. However, the mechanism and importance of zinc finger proteins in the regulation of immune response is not very well defined and understood. This review highlights in detail the importance of zinc finger proteins in the regulation of immune system at transcriptional and post transcriptional level. CONCLUSION Different types of zinc finger proteins are involved in immune system regulation and their mechanism of regulation is discussed herewith.
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Affiliation(s)
- Gurseen Rakhra
- Department of Nutrition & Dietetics, Faculty of Allied Health Sciences, Manav Rachna International Institute of Research & Studies, Faridabad, Haryana, 121004, India
| | - Gurmeen Rakhra
- Department of Biochemistry, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, India.
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Overexpression of transcription factor BLIMP1/prdm1 leads to growth inhibition and enhanced secretory capacity in Chinese hamster ovary cells. Metab Eng 2021; 67:237-249. [PMID: 34265400 DOI: 10.1016/j.ymben.2021.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 06/06/2021] [Accepted: 07/07/2021] [Indexed: 01/11/2023]
Abstract
Chinese hamster ovary (CHO) cells present inherent limitations for processing and secretion of large amounts of recombinant proteins, especially for those requiring complex post-translational processing. To tackle these limitations, we engineered CHO host cells (CHOK1 and CHOS) to overexpress the transcription factor BLIMP1/prdm1 (a master regulator of the highly-secreting phenotype of antibody-producing plasma cells), generating novel CHO cell lines (referred to as CHOB). The CHOB cell lines exhibited decreased cell densities, prolonged stationary phase and arrested cell cycle in G1/G0 phase but simultaneously had significantly greater product titre for recombinant IgG1 (> 2-fold increase) coupled with a significantly greater cell-specific productivities (> 3-fold increase). We demonstrated that the improved productive phenotype of CHOB cells resulted from a series of changes to cell physiology and metabolism. CHOB cells showed a significantly greater ER size and increased protein synthesis and secretion capacity compared to control cells. In addition, CHOB cells presented a metabolic profile that favoured energy production to support increased recombinant protein production. This study indicated that a cell engineering approach based on BLIMP1 expression offers great potential for improving the secretory capacity of CHO cell hosts utilised for manufacture of recombinant biopharmaceuticals. Our findings also provides a greater understanding of the relationship between cell growth and productivity, valuable generic information for improving productive phenotypes for CHO cell lines during industrial cell line development.
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35
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Perini T, Materozzi M, Milan E. The Immunity-malignancy equilibrium in multiple myeloma: lessons from oncogenic events in plasma cells. FEBS J 2021; 289:4383-4397. [PMID: 34117720 DOI: 10.1111/febs.16068] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/13/2021] [Accepted: 06/10/2021] [Indexed: 11/29/2022]
Abstract
Multiple myeloma (MM) is a malignancy of plasma cells (PC) that grow within the bone marrow and maintain massive immunoglobulin (Ig) production. Disease evolution is driven by genetic lesions, whose effects on cell biology and fitness underlie addictions and vulnerabilities of myeloma cells. Several genes mutated in myeloma are strictly involved in dictating PC identity and antibody factory function. Here, we evaluate the impact of mutations in IRF4, PRDM1, and XBP1, essential transcription factors driving the B to PC differentiation, on MM cell biology and homeostasis. These factors are highly specialized, with limited overlap in their downstream transcriptional programs. Indeed, IRF4 sustains metabolism, survival, and proliferation, while PRDM1 and XBP1 are mainly responsible for endoplasmic reticulum expansion and sustained Ig secretion. Interestingly, IRF4 undergoes activating mutations and translocations, while PRDM1 and XBP1 are hit by loss-of-function events, raising the hypothesis that containment of the secretory program, but not its complete extinction, may be beneficial to malignant PCs. Finally, recent studies unveiled that also the PRDM1 target, FAM46C/TENT5C, an onco-suppressor uniquely and frequently mutated or deleted in myeloma, is directly and potently involved in orchestrating ER homeostasis and secretory activity. Inactivating mutations found in this gene and its interactors strengthen the notion that reduced secretory capacity confers advantage to myeloma cells. We believe that dissection of the evolutionary pressure on genes driving PC-specific functions in myeloma will disclose the cellular strategies by which myeloma cells maintain an equilibrium between antibody production and survival, thus unveiling novel therapeutic targets.
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Affiliation(s)
- Tommaso Perini
- Age related Diseases Unit, Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milano, Italy.,University Vita-Salute San Raffaele, Milano, Italy.,Hematology and Bone Marrow Transplantation Unit, San Raffaele Scientific Institute, Milano, Italy
| | - Maria Materozzi
- Age related Diseases Unit, Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milano, Italy.,Department of Medicine, Surgery and Neurosciences, University of Siena, Italy
| | - Enrico Milan
- Age related Diseases Unit, Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milano, Italy.,University Vita-Salute San Raffaele, Milano, Italy
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The synergistic proapoptotic effect of PARP-1 and HDAC inhibition in cutaneous T-cell lymphoma is mediated via Blimp-1. Blood Adv 2021; 4:4788-4797. [PMID: 33017467 DOI: 10.1182/bloodadvances.2020002049] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 08/26/2020] [Indexed: 02/06/2023] Open
Abstract
The therapy of advanced mycosis fungoides (MF) presents a therapeutic challenge, and the search for new therapeutic targets is ongoing. Poly(ADP-ribose) polymerase 1 was shown to be upregulated in patients with advanced MF and could be druggable by a new class of chemotherapeutic agents, PARP-1 inhibitors, which are already in clinical trials for other malignancies; however, the role of PARP-1 inhibitors in MF has never been established. We examined the efficacy of talazoparib in the murine model of cutaneous T-cell lymphoma. The cytotoxic effect of talazoparib on Moloney MuLV-induced T-cell lymphoma (MBL2) cells was a result of G2/M cell cycle arrest via the upregulation of p53. The in vivo experiments confirmed the clinical impact of talazoparib on MF tumors. When talazoparib was combined with the histone deacetylase (HDAC) inhibitor, romidepsin, the cytotoxic effect was synergized via downregulation of the DNA-repair genes Fanconianemia complementation group A (FANCA), Fanconi anemia complementation group D2 (FANCD2), and DNA topoisomerase II binding protein 1(TOPBP1)and stimulation of apoptosis via Blimp-1 (PRDM1)/Bax axis. Romidepsin increased the expression of IRF8 and Bcl-6, leading to upregulation of Blimp1and Bax; whereas talazoparib upregulated Blimp-1 and Bax via upregulation of interferon regulatory factor 4 (IRF4), leading to cleavage of caspases 6 and 7. Thus, a combination of talazoparib with romidepsin demonstrated the synergistic antilymphoma effect and warranted further investigation in a clinical trial.
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37
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The Interaction of the Tumor Suppressor FAM46C with p62 and FNDC3 Proteins Integrates Protein and Secretory Homeostasis. Cell Rep 2021; 32:108162. [PMID: 32966780 DOI: 10.1016/j.celrep.2020.108162] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 06/23/2020] [Accepted: 08/26/2020] [Indexed: 02/06/2023] Open
Abstract
FAM46C is a non-canonical poly(A) polymerase uniquely mutated in up to 20% of multiple myeloma (MM) patients, implying a tissue-specific tumor suppressor function. Here, we report that FAM46C selectively stabilizes mRNAs encoding endoplasmic reticulum (ER)-targeted proteins, thereby concertedly enhancing the expression of proteins that control ER protein import, folding, N-glycosylation, and trafficking and boosting protein secretion. This role requires the interaction with the ER membrane resident proteins FNDC3A and FNDC3B. In MM cells, FAM46C expression raises secretory capacity beyond sustainability, inducing ROS accumulation, ATP shortage, and cell death. FAM46C activity is regulated through rapid proteasomal degradation or the inhibitory interaction with the ZZ domain of the autophagic receptor p62 that hinders its association with FNDC3 proteins via sequestration in p62+ aggregates. Altogether, our data disclose a p62/FAM46C/FNDC3 circuit coordinating sustainable secretory activity and survival, providing an explanation for the MM-specific oncosuppressive role of FAM46C and uncovering potential therapeutic opportunities against cancer.
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38
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Xie X, Shrimpton J, Doody GM, Conaghan PG, Ponchel F. B-cell capacity for differentiation changes with age. Aging Cell 2021; 20:e13341. [PMID: 33711204 PMCID: PMC8045946 DOI: 10.1111/acel.13341] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 01/18/2021] [Accepted: 02/21/2021] [Indexed: 01/17/2023] Open
Abstract
Background Age‐related immune deficiencies are thought to be responsible for increased susceptibility to infection in older adults, with alterations in lymphocyte populations becoming more prevalent over time. The loss of humoral immunity in ageing was attributed to the diminished numbers of B cells and the reduced ability to generate immunoglobulin. Aims To compare the intrinsic B‐cell capacity for differentiation into mature plasma cells (PCs), between young and old donors, using in vitro assays, providing either effective T‐cell help or activation via TLR engagement. Methods B cells were isolated from healthy individuals, in younger (30–38 years) and older (60–64 years) donors. An in vitro model system of B‐cell differentiation was used, analysing 5 differentiation markers by flow cytometry, under T‐dependent (TD: CD40/BCR stimulation) or T‐independent (TI: TLR7/BCR activation) conditions. Antibody secretion was measured by ELISA and gene expression using qPCR. Results TI and TD differentiation resulted in effective proliferation of B cells followed by their differentiation into PC. B‐cell‐executed TI differentiation was faster, all differentiation marker and genes being expressed earlier than under TD differentiation (day 6), although generating less viable cells and lower antibody levels (day 13). Age‐related differences in B‐cell capacity for differentiation were minimal in TD differentiation. In contrast, in TI differentiation age significantly affected proliferation, viability, differentiation, antibody secretion and gene expression, older donors being more efficient. Conclusion Altogether, B‐cell differentiation into PC appeared similar between age groups when provided with T‐cell help, in contrast to TI differentiation, where multiple age‐related changes suggest better capacities in older donors. These new findings may help explain the emergence of autoantibodies in ageing.
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Affiliation(s)
- Xuanxiao Xie
- Leeds Institute of Rheumatic and Musculoskeletal Medicine and NIHR Leeds Biomedical Research Centre University of Leeds Leeds UK
| | - Jennifer Shrimpton
- 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
| | - Philip G. Conaghan
- Leeds Institute of Rheumatic and Musculoskeletal Medicine and NIHR Leeds Biomedical Research Centre University of Leeds Leeds UK
| | - Frederique Ponchel
- Leeds Institute of Rheumatic and Musculoskeletal Medicine and NIHR Leeds Biomedical Research Centre University of Leeds Leeds UK
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Li B, Li Y, Wu S, Yang Y, Fu S, Yin X, Tu X, Fang L, Guo Z, Ye J. Identification and functional characterization of CD154 in T cell-dependent immune response in Nile tilapia (Oreochromis niloticus). FISH & SHELLFISH IMMUNOLOGY 2021; 111:102-110. [PMID: 33513438 DOI: 10.1016/j.fsi.2021.01.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/19/2021] [Accepted: 01/19/2021] [Indexed: 06/12/2023]
Abstract
CD154, a member of the TNF superfamily, is a multifunctional molecule highly expressed in activated T cells, and plays important roles in T cell-dependent humoral immune response. In this study, CD154 of Nile tilapia (Oreochromis niloticus) was identified, and its functions in the T cell-dependent immune response were demonstrated. The open reading frame (ORF) of OnCD154 is 699 bp, encoding a protein of 232 amino acids with a 23 amino acid transmembrane region. Amino acid sequence of OnCD154 is highly homologous to that of other teleost fish, especially rainbow trout. Quantitative real-time PCR (qRT-PCR) demonstrated that mRNA of OnCD154 is highly expressed in immune organs, especially in spleen, thymus, gills, head kidney, etc. In addition, the anti-OnCD154 polyclonal antibody (anti-(r)OnCD154) was successfully prepared, and it can react with natural protein in head kidney leukocytes. Following two immunizations with keyhole limpet hemocyanin (KLH) in vivo, the significantly up-regulated expression level of OnCD154 mRNA appeared earlier (fifth day) and higher (42.9 folds) in the second challenge than the first on in head kidney. Further, after stimulation with KLH in vitro, the expressions of T cell-dependent immune response-related molecules (activated T cell specific surface molecules CD3ε and CD154) and B cell differentiation-related molecules (Blimp1 and sIgM) and CD40 were significantly up-regulated in head kidney leukocytes. Moreover, the up-regulated expressions of these molecules were blocked with the treatment of anti-(r)OnCD154 antibody. Taken together, these results indicate that OnCD154 might get involved in T cell-dependent immune response, and provide a new insight into the humoral immune response of teleost fish.
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Affiliation(s)
- Bingxi Li
- Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong, 510631, PR China
| | - Yuan Li
- Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong, 510631, PR China
| | - Siwei Wu
- Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong, 510631, PR China
| | - Yanjian Yang
- Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong, 510631, PR China
| | - Shengli Fu
- Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong, 510631, PR China
| | - Xiaoxue Yin
- Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong, 510631, PR China
| | - Xiao Tu
- Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong, 510631, PR China
| | - Liang Fang
- Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong, 510631, PR China.
| | - Zheng Guo
- Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong, 510631, PR China.
| | - Jianmin Ye
- Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong, 510631, PR China.
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Di Tullio F, Schwarz M, Zorgati H, Mzoughi S, Guccione E. The duality of PRDM proteins: epigenetic and structural perspectives. FEBS J 2021; 289:1256-1275. [PMID: 33774927 DOI: 10.1111/febs.15844] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/26/2021] [Accepted: 03/25/2021] [Indexed: 12/13/2022]
Abstract
PRDF1 and RIZ1 homology domain containing (PRDMs) are a subfamily of Krüppel-like zinc finger proteins controlling key processes in metazoan development and in cancer. PRDMs exhibit unique dualities: (a) PR domain/ZNF arrays-their structure combines a SET-like domain known as a PR domain, typically found in methyltransferases, with a variable array of C2H2 zinc fingers (ZNF) characteristic of DNA-binding transcription factors; (b) transcriptional activators/repressors-their physiological function is context- and cell-dependent; mechanistically, some PRDMs have a PKMT activity and directly catalyze histone lysine methylation, while others are rather pseudomethyltransferases and act by recruiting transcriptional cofactors; (c) oncogenes/tumor suppressors-their pathological function depends on the specific PRDM isoform expressed during tumorigenesis. This duality is well known as the 'Yin and Yang' of PRDMs and involves a complex regulation of alternative splicing or alternative promoter usage, to generate full-length or PR-deficient isoforms with opposing functions in cancer. In conclusion, once their dualities are fully appreciated, PRDMs represent a promising class of targets in oncology by virtue of their widespread upregulation across multiple tumor types and their somatic dispensability, conferring a broad therapeutic window and limited toxic side effects. The recent discovery of a first-in-class compound able to inhibit PRDM9 activity has paved the way for the identification of further small molecular inhibitors able to counteract PRDM oncogenic activity.
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Affiliation(s)
- Federico Di Tullio
- Department of Oncological Sciences and Pharmacological Sciences, Center for Therapeutics Discovery, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Megan Schwarz
- Department of Oncological Sciences and Pharmacological Sciences, Center for Therapeutics Discovery, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Habiba Zorgati
- Department of Oncological Sciences and Pharmacological Sciences, Center for Therapeutics Discovery, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Slim Mzoughi
- Department of Oncological Sciences and Pharmacological Sciences, Center for Therapeutics Discovery, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ernesto Guccione
- Department of Oncological Sciences and Pharmacological Sciences, Center for Therapeutics Discovery, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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41
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Dobosz E, Lorenz G, Ribeiro A, Würf V, Wadowska M, Kotlinowski J, Schmaderer C, Potempa J, Fu M, Koziel J, Lech M. Murine myeloid cell MCPIP1 suppresses autoimmunity by regulating B-cell expansion and differentiation. Dis Model Mech 2021; 14:dmm047589. [PMID: 33737335 PMCID: PMC7988765 DOI: 10.1242/dmm.047589] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 01/26/2021] [Indexed: 12/26/2022] Open
Abstract
Myeloid-derived cells, in particular macrophages, are increasingly recognized as critical regulators of the balance of immunity and tolerance. However, whether they initiate autoimmune disease or perpetuate disease progression in terms of epiphenomena remains undefined.Here, we show that depletion of MCPIP1 in macrophages and granulocytes (Mcpip1fl/fl-LysMcre+ C57BL/6 mice) is sufficient to trigger severe autoimmune disease. This was evidenced by the expansion of B cells and plasma cells and spontaneous production of autoantibodies, including anti-dsDNA, anti-Smith and anti-histone antibodies. Consequently, we document evidence of severe skin inflammation, pneumonitis and histopathologic evidence of glomerular IgG deposits alongside mesangioproliferative nephritis in 6-month-old mice. These phenomena are related to systemic autoinflammation, which secondarily induces a set of cytokines such as Baff, Il5, Il9 and Cd40L, affecting adaptive immune responses. Therefore, abnormal macrophage activation is a key factor involved in the loss of immune tolerance.Overall, we demonstrate that deficiency of MCPIP1 solely in myeloid cells triggers systemic lupus-like autoimmunity and that the control of myeloid cell activation is a crucial checkpoint in the development of systemic autoimmunity.
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Affiliation(s)
- Ewelina Dobosz
- Department of Microbiology, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University, Krakow 30-387, Poland
| | - Georg Lorenz
- Klinikum rechts der Isar, Department of Nephrology, Technical University Munich, Munich 81675, Germany
| | - Andrea Ribeiro
- LMU Klinikum, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-Universität München, Munich 80336, Germany
| | - Vivian Würf
- LMU Klinikum, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-Universität München, Munich 80336, Germany
| | - Marta Wadowska
- Department of Microbiology, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University, Krakow 30-387, Poland
| | - Jerzy Kotlinowski
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow 30-387, Poland
| | - Christoph Schmaderer
- Klinikum rechts der Isar, Department of Nephrology, Technical University Munich, Munich 81675, Germany
| | - Jan Potempa
- Department of Microbiology, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University, Krakow 30-387, Poland
- Department of Oral Immunity and Infectious Diseases, University of Louisville School of Dentistry, University of Louisville, Louisville, KY 40202, USA
| | - Mingui Fu
- Department of Biomedical Science and Shock, Trauma Research Center, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Joanna Koziel
- Department of Microbiology, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University, Krakow 30-387, Poland
- LMU Klinikum, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-Universität München, Munich 80336, Germany
| | - Maciej Lech
- Department of Microbiology, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University, Krakow 30-387, Poland
- LMU Klinikum, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-Universität München, Munich 80336, Germany
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Rogers KJ, Vijay R, Butler NS. Anti-malarial humoral immunity: the long and short of it. Microbes Infect 2021; 23:104807. [PMID: 33684519 DOI: 10.1016/j.micinf.2021.104807] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/28/2021] [Accepted: 02/28/2021] [Indexed: 12/17/2022]
Abstract
Humoral immunity is critical for limiting Plasmodium parasite infections and the severity of malaria. Naturally acquired immunity against malaria occurs inefficiently and protection is relatively short-lived. Here we review recent advances and explore emerging hypotheses regarding the molecular and cellular pathways that regulate Plasmodium parasite-specific B cell responses and durable anti-malarial humoral immunity.
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Affiliation(s)
- Kai J Rogers
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, USA
| | - Rahul Vijay
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, USA
| | - Noah S Butler
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, USA; Interdisciplinary Graduate Program in Immunology, The University of Iowa, Iowa City, IA, USA.
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43
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A tale of two fish: Comparative transcriptomics of resistant and susceptible steelhead following exposure to Ceratonova shasta highlights differences in parasite recognition. PLoS One 2021; 16:e0234837. [PMID: 33621237 PMCID: PMC7901748 DOI: 10.1371/journal.pone.0234837] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 02/10/2021] [Indexed: 12/13/2022] Open
Abstract
Diseases caused by myxozoan parasites represent a significant threat to the health of salmonids in both the wild and aquaculture setting, and there are no effective therapeutants for their control. The myxozoan Ceratonova shasta is an intestinal parasite of salmonids that causes severe enteronecrosis and mortality. Most fish populations appear genetically fixed as resistant or susceptible to the parasite, offering an attractive model system for studying the immune response to myxozoans. We hypothesized that early recognition of the parasite is a critical factor driving resistance and that susceptible fish would have a delayed immune response. RNA-seq was used to identify genes that were differentially expressed in the gills and intestine during the early stages of C. shasta infection in both resistant and susceptible steelhead (Oncorhynchus mykiss). This revealed a downregulation of genes involved in the IFN-γ signaling pathway in the gills of both phenotypes. Despite this, resistant fish quickly contained the infection and several immune genes, including two innate immune receptors were upregulated. Susceptible fish, on the other hand, failed to control parasite proliferation and had no discernible immune response to the parasite, including a near-complete lack of differential gene expression in the intestine. Further sequencing of intestinal samples from susceptible fish during the middle and late stages of infection showed a vigorous yet ineffective immune response driven by IFN-γ, and massive differential expression of genes involved in cell adhesion and the extracellular matrix, which coincided with the breakdown of the intestinal structure. Our results suggest that the parasite may be suppressing the host’s immune system during the initial invasion, and that susceptible fish are unable to recognize the parasite invading the intestine or mount an effective immune response. These findings improve our understanding of myxozoan-host interactions while providing a set of putative resistance markers for future studies.
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44
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He K, Hettinga A, Kale SL, Hu S, Xie MM, Dent AL, Ray A, Poholek AC. Blimp-1 is essential for allergen-induced asthma and Th2 cell development in the lung. J Exp Med 2021; 217:151760. [PMID: 32399548 PMCID: PMC7336314 DOI: 10.1084/jem.20190742] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 12/23/2019] [Accepted: 04/03/2020] [Indexed: 12/28/2022] Open
Abstract
A Th2 immune response is central to allergic airway inflammation, which afflicts millions worldwide. However, the mechanisms that augment GATA3 expression in an antigen-primed developing Th2 cell are not well understood. Here, we describe an unexpected role for Blimp-1, a transcriptional repressor that constrains autoimmunity, as an upstream promoter of GATA3 expression that is critical for Th2 cell development in the lung to inhaled but not systemically delivered allergens but is dispensable for TFH function and IgE production. Mechanistically, Blimp-1 acts through Bcl6, leading to increased GATA3 expression in lung Th2 cells. Surprisingly, the anti-inflammatory cytokine IL-10, but not the pro-inflammatory cytokines IL-6 or IL-21, is required via STAT3 activation to up-regulate Blimp-1 and promote Th2 cell development. These data reveal a hitherto unappreciated role for an IL-10–STAT3–Blimp-1 circuit as an initiator of an inflammatory Th2 response in the lung to allergens. Thus, Blimp-1 in a context-dependent fashion can drive inflammation by promoting rather than terminating effector T cell responses.
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Affiliation(s)
- Kun He
- Division of Pediatric Rheumatology, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA.,Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Angela Hettinga
- Division of Pediatric Rheumatology, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA.,Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Sagar Laxman Kale
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA.,Department of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Sanmei Hu
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA.,Department of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Markus M Xie
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN
| | - Alexander L Dent
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN
| | - Anuradha Ray
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA.,Department of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, PA
| | - Amanda C Poholek
- Division of Pediatric Rheumatology, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA.,Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
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45
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Dernstedt A, Leidig J, Holm A, Kerkman PF, Mjösberg J, Ahlm C, Henriksson J, Hultdin M, Forsell MNE. Regulation of Decay Accelerating Factor Primes Human Germinal Center B Cells for Phagocytosis. Front Immunol 2021; 11:599647. [PMID: 33469456 PMCID: PMC7813799 DOI: 10.3389/fimmu.2020.599647] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 11/13/2020] [Indexed: 01/10/2023] Open
Abstract
Germinal centers (GC) are sites for extensive B cell proliferation and homeostasis is maintained by programmed cell death. The complement regulatory protein Decay Accelerating Factor (DAF) blocks complement deposition on host cells and therefore also phagocytosis of cells. Here, we show that B cells downregulate DAF upon BCR engagement and that T cell-dependent stimuli preferentially led to activation of DAFlo B cells. Consistent with this, a majority of light and dark zone GC B cells were DAFlo and susceptible to complement-dependent phagocytosis, as compared with DAFhi GC B cells. We could also show that the DAFhi GC B cell subset had increased expression of the plasma cell marker Blimp-1. DAF expression was also modulated during B cell hematopoiesis in the human bone marrow. Collectively, our results reveal a novel role of DAF to pre-prime activated human B cells for phagocytosis prior to apoptosis.
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Affiliation(s)
- Andy Dernstedt
- Department of Clinical Microbiology, Section of Infection and Immunology, Umeå University, Umeå, Sweden
| | - Jana Leidig
- Department of Clinical Microbiology, Section of Infection and Immunology, Umeå University, Umeå, Sweden
| | - Anna Holm
- Department of Clinical Sciences, Division of Otorhinolaryngology, Umeå University, Umeå, Sweden
| | - Priscilla F Kerkman
- Department of Clinical Microbiology, Section of Infection and Immunology, Umeå University, Umeå, Sweden
| | - Jenny Mjösberg
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Clas Ahlm
- Department of Clinical Microbiology, Section of Infection and Immunology, Umeå University, Umeå, Sweden
| | - Johan Henriksson
- Molecular Infection Medicine Sweden, Department of Molecular Biology, Umeå University, Umeå, Sweden
| | - Magnus Hultdin
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
| | - Mattias N E Forsell
- Department of Clinical Microbiology, Section of Infection and Immunology, Umeå University, Umeå, Sweden
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46
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Mayer P, Kraft A, Witzel HR, Marnet N, Hörner N, Roth W, Heinrich S, Hackert T, Bergmann F, Kauczor HU, Klauss M, Gaida MM. Restricted Water Diffusion in Diffusion-Weighted Magnetic Resonance Imaging in Pancreatic Cancer is Associated with Tumor Hypoxia. Cancers (Basel) 2020; 13:cancers13010089. [PMID: 33396818 PMCID: PMC7801953 DOI: 10.3390/cancers13010089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/21/2020] [Accepted: 12/26/2020] [Indexed: 01/05/2023] Open
Abstract
Simple Summary Pancreatic cancer is characterized by a dense network of connective tissue surrounding clusters of cancer cells, the so-called stroma. This ubiquitous connective tissue impairs the delivery of oxygen to cancer cells. This results in hypoxia, which renders the cancer more aggressive and more resistant to treatment. In the present study, we investigated whether the extent of hypoxia in pancreatic cancer can be predicted by magnetic resonance imaging (MRI), a widely used medical imaging technique. More specifically, we used an MRI sequence which can quantitate the random motion (i.e., diffusion) of water molecules within the cancer tissue, namely diffusion-weighted (DW) MRI. We found that the random motion of water molecules is lower in cancer lesions with high hypoxia compared to those with low hypoxia. The findings from our study imply that DW-MRI can be used to identify pancreatic cancer lesions with high hypoxia which are at high risk for treatment failure. Abstract Hypoxia is a hallmark of pancreatic cancer (PDAC) due to its compact and extensive fibrotic tumor stroma. Hypoxia contributes to high lethality of this disease, by inducing a more malignant phenotype and resistance to radiation and chemotherapy. Thus, non-invasive methods to quantify hypoxia could be helpful for treatment decisions, for monitoring, especially in non-resectable tumors, or to optimize personalized therapy. In the present study, we investigated whether tumor hypoxia in PDAC is reflected by diffusion-weighted magnetic resonance imaging (DW-MRI), a functional imaging technique, frequently used in clinical practice for identification and characterization of pancreatic lesions. DW-MRI assesses the tissue microarchitecture by measuring the diffusion of water molecules, which is more restricted in highly compact tissues. As reliable surrogate markers for hypoxia, we determined Blimp-1 (B-lymphocyte induced maturation protein), a transcription factor, as well as vascular endothelial growth factor (VEGF), which are up-regulated in response to hypoxia. In 42 PDAC patients, we observed a close association between restricted water diffusion in DW-MRI and tumor hypoxia in matched samples, as expressed by high levels of Blimp-1 and VEGF in tissue samples of the respective patients. In summary, our data show that DW-MRI is well suited for the evaluation of tumor hypoxia in PDAC and could potentially be used for the identification of lesions with a high hypoxic fraction, which are at high risk for failure of radiochemotherapy.
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Affiliation(s)
- Philipp Mayer
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, 69120 Heidelberg, Germany; (H.-U.K.); (M.K.)
- Correspondence: ; Tel.: +49-6221-5637-345
| | - Anne Kraft
- Institute of Pathology, University Medical Center Mainz, JGU-Mainz, 55131 Mainz, Germany; (A.K.); (H.R.W.); (N.M.); (N.H.); (W.R.); (M.M.G.)
| | - Hagen R. Witzel
- Institute of Pathology, University Medical Center Mainz, JGU-Mainz, 55131 Mainz, Germany; (A.K.); (H.R.W.); (N.M.); (N.H.); (W.R.); (M.M.G.)
| | - Nicole Marnet
- Institute of Pathology, University Medical Center Mainz, JGU-Mainz, 55131 Mainz, Germany; (A.K.); (H.R.W.); (N.M.); (N.H.); (W.R.); (M.M.G.)
| | - Nina Hörner
- Institute of Pathology, University Medical Center Mainz, JGU-Mainz, 55131 Mainz, Germany; (A.K.); (H.R.W.); (N.M.); (N.H.); (W.R.); (M.M.G.)
| | - Wilfried Roth
- Institute of Pathology, University Medical Center Mainz, JGU-Mainz, 55131 Mainz, Germany; (A.K.); (H.R.W.); (N.M.); (N.H.); (W.R.); (M.M.G.)
| | - Stefan Heinrich
- Department of Surgery, University Medical Center Mainz, JGU-Mainz, 55131 Mainz, Germany;
| | - Thilo Hackert
- Department of General, Visceral, and Transplantation Surgery, University Hospital Heidelberg, 69120 Heidelberg, Germany;
| | - Frank Bergmann
- Institute of Pathology, University Hospital Heidelberg, 69120 Heidelberg, Germany;
- Clinical Pathology, Klinikum Darmstadt GmbH, 64283 Darmstadt, Germany
| | - Hans-Ulrich Kauczor
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, 69120 Heidelberg, Germany; (H.-U.K.); (M.K.)
| | - Miriam Klauss
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, 69120 Heidelberg, Germany; (H.-U.K.); (M.K.)
| | - Matthias M. Gaida
- Institute of Pathology, University Medical Center Mainz, JGU-Mainz, 55131 Mainz, Germany; (A.K.); (H.R.W.); (N.M.); (N.H.); (W.R.); (M.M.G.)
- Research Center for Immunotherapy, University Medical Center Mainz, JGU-Mainz, 55131 Mainz, Germany
- Joint Unit Immunopathology, Institute of Pathology, University Medical Center, JGU-Mainz and TRON, Translational Oncology at the University Medical Center, JGU-Mainz, 55131 Mainz, Germany
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Emerging Roles of PRDM Factors in Stem Cells and Neuronal System: Cofactor Dependent Regulation of PRDM3/16 and FOG1/2 (Novel PRDM Factors). Cells 2020; 9:cells9122603. [PMID: 33291744 PMCID: PMC7761934 DOI: 10.3390/cells9122603] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/13/2020] [Accepted: 11/25/2020] [Indexed: 12/19/2022] Open
Abstract
PRDI-BF1 (positive regulatory domain I-binding factor 1) and RIZ1 (retinoblastoma protein-interacting zinc finger gene 1) (PR) homologous domain containing (PRDM) transcription factors are expressed in neuronal and stem cell systems, and they exert multiple functions in a spatiotemporal manner. Therefore, it is believed that PRDM factors cooperate with a number of protein partners to regulate a critical set of genes required for maintenance of stem cell self-renewal and differentiation through genetic and epigenetic mechanisms. In this review, we summarize recent findings about the expression of PRDM factors and function in stem cell and neuronal systems with a focus on cofactor-dependent regulation of PRDM3/16 and FOG1/2. We put special attention on summarizing the effects of the PRDM proteins interaction with chromatin modulators (NuRD complex and CtBPs) on the stem cell characteristic and neuronal differentiation. Although PRDM factors are known to possess intrinsic enzyme activity, our literature analysis suggests that cofactor-dependent regulation of PRDM3/16 and FOG1/2 is also one of the important mechanisms to orchestrate bidirectional target gene regulation. Therefore, determining stem cell and neuronal-specific cofactors will help better understanding of PRDM3/16 and FOG1/2-controlled stem cell maintenance and neuronal differentiation. Finally, we discuss the clinical aspect of these PRDM factors in different diseases including cancer. Overall, this review will help further sharpen our knowledge of the function of the PRDM3/16 and FOG1/2 with hopes to open new research fields related to these factors in stem cell biology and neuroscience.
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Arumugam K, Shin W, Schiavone V, Vlahos L, Tu X, Carnevali D, Kesner J, Paull EO, Romo N, Subramaniam P, Worley J, Tan X, Califano A, Cosma MP. The Master Regulator Protein BAZ2B Can Reprogram Human Hematopoietic Lineage-Committed Progenitors into a Multipotent State. Cell Rep 2020; 33:108474. [PMID: 33296649 DOI: 10.1016/j.celrep.2020.108474] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 09/25/2020] [Accepted: 11/12/2020] [Indexed: 01/03/2023] Open
Abstract
Bi-species, fusion-mediated, somatic cell reprogramming allows precise, organism-specific tracking of unknown lineage drivers. The fusion of Tcf7l1-/- murine embryonic stem cells with EBV-transformed human B cell lymphocytes, leads to the generation of bi-species heterokaryons. Human mRNA transcript profiling at multiple time points permits the tracking of the reprogramming of B cell nuclei to a multipotent state. Interrogation of a human B cell regulatory network with gene expression signatures identifies 8 candidate master regulator proteins. Of these 8 candidates, ectopic expression of BAZ2B, from the bromodomain family, efficiently reprograms hematopoietic committed progenitors into a multipotent state and significantly enhances their long-term clonogenicity, stemness, and engraftment in immunocompromised mice. Unbiased systems biology approaches let us identify the early driving events of human B cell reprogramming.
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Affiliation(s)
- Karthik Arumugam
- Center for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, 08003 Barcelona, Spain
| | - William Shin
- Department of Systems Biology, Columbia University, New York, NY, USA
| | - Valentina Schiavone
- Center for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Lukas Vlahos
- Department of Systems Biology, Columbia University, New York, NY, USA
| | - Xiaochuan Tu
- Center for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, 08003 Barcelona, Spain; Universitat Pompeu Fabra (UPF), Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Davide Carnevali
- Center for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Jordan Kesner
- Department of Systems Biology, Columbia University, New York, NY, USA
| | - Evan O Paull
- Department of Systems Biology, Columbia University, New York, NY, USA
| | - Neus Romo
- Center for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Prem Subramaniam
- Department of Systems Biology, Columbia University, New York, NY, USA
| | - Jeremy Worley
- Department of Systems Biology, Columbia University, New York, NY, USA
| | - Xiangtian Tan
- Department of Systems Biology, Columbia University, New York, NY, USA
| | - Andrea Califano
- Department of Systems Biology, Columbia University, New York, NY, USA; Herbert Irving Comprehensive Cancer Center, J.P. Sulzberger Columbia Genome Center, Department of Biomedical Informatics, Department of Biochemistry and Molecular Biophysics, Department of Medicine, Columbia University, New York, NY, USA.
| | - Maria Pia Cosma
- Center for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, 08003 Barcelona, Spain; Universitat Pompeu Fabra (UPF), Dr. Aiguader 88, 08003 Barcelona, Spain; ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain; Bioland Laboratory, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou 510005, China; CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China.
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49
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Nath AR, Natarajan J. Network analysis of MicroRNA transcripts revealed relevant MicroRNAs and gene candidates for angiogenesis in gastric cancer. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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50
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Perdiguero P, Goméz-Esparza MC, Martín D, Bird S, Soleto I, Morel E, Díaz-Rosales P, Tafalla C. Insights Into the Evolution of the prdm1/Blimp1 Gene Family in Teleost Fish. Front Immunol 2020; 11:596975. [PMID: 33193451 PMCID: PMC7662092 DOI: 10.3389/fimmu.2020.596975] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 10/08/2020] [Indexed: 12/27/2022] Open
Abstract
In mammals, Blimp1 (B lymphocyte-induced maturation protein 1) encoded by the prdm1 gene and its homolog Hobit (homolog of Blimp1 in T cells) encoded by znf683, represent key transcriptional factors that control the development and differentiation of both B and T cells. Despite their essential role in the regulation of acquired immunity, this gene family has been largely unexplored in teleosts to date. Until now, one prdm1 gene has been identified in most teleost species, whereas a znf683 homolog has not yet been reported in any of these species. Focusing our analysis on rainbow trout (Oncorhynchus mykiss), an in silico identification and characterization of prdm1-like genes has been undertaken, confirming that prdm1 and znf683 evolved from a common ancestor gene, acquiring three gene copies after the teleost-specific whole genome duplication event (WGD) and six genes after the salmonid-specific WGD. Additional transcriptional studies to study how each of these genes are regulated in homeostasis, in response to a viral infection or in B cells in different differentiation stages, provide novel insights as to how this gene family evolved and how their encoded products might be implicated in the lymphocyte differentiation process in teleosts.
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Affiliation(s)
| | | | - Diana Martín
- Animal Health Research Center (CISA-INIA), Madrid, Spain
| | - Steve Bird
- Biomedical Unit, School of Science, University of Waikato, Hamilton, New Zealand
| | - Irene Soleto
- Animal Health Research Center (CISA-INIA), Madrid, Spain
| | - Esther Morel
- Animal Health Research Center (CISA-INIA), Madrid, Spain
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