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Ransegnola BP, Pattarabanjird T, McNamara CA. Tipping the Scale: Atheroprotective IgM-Producing B Cells in Atherosclerosis. Arterioscler Thromb Vasc Biol 2024; 44:1906-1915. [PMID: 39022832 PMCID: PMC11338718 DOI: 10.1161/atvbaha.124.319847] [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] [Indexed: 07/20/2024]
Abstract
Atherosclerosis is a chronic inflammatory disease whose progression is fueled by proinflammatory moieties and limited by anti-inflammatory mediators. Whereas oxidative damage and the generation of oxidation-specific epitopes that act as damage-associated molecular patterns are highly inflammatory, IgM antibodies produced by B-1 and marginal zone B cells counteract unrestricted inflammation by neutralizing and encouraging clearance of these proinflammatory signals. In this review, we focus on describing the identities of IgM-producing B cells in both mice and humans, elaborating the mechanisms underlying IgM production, and discussing the potential strategies to augment the production of atheroprotective IgM. In addition, we will discuss promising therapeutic interventions in humans to help tip the scale toward augmentation of IgM production and to provide atheroprotection.
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Affiliation(s)
- Brett Patrick Ransegnola
- Medical Scientist Training Program, Department of Medicine, University of Virginia, Charlottesville, VA, USA
- Department of Pathology, Department of Medicine, University of Virginia, Charlottesville, VA, USA
- Beirne B. Carter Immunology Center, Department of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Tanyaporn Pattarabanjird
- Medical Scientist Training Program, Department of Medicine, University of Virginia, Charlottesville, VA, USA
- Beirne B. Carter Immunology Center, Department of Medicine, University of Virginia, Charlottesville, VA, USA
- Division of Cardiovascular Medicine, Department of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Coleen A. McNamara
- Beirne B. Carter Immunology Center, Department of Medicine, University of Virginia, Charlottesville, VA, USA
- Robert M. Berne Cardiovascular Research Center, Department of Medicine, University of Virginia, Charlottesville, VA, USA
- Division of Cardiovascular Medicine, Department of Medicine, University of Virginia, Charlottesville, VA, USA
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2
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Harrison J, Newland SA, Jiang W, Giakomidi D, Zhao X, Clement M, Masters L, Corovic A, Zhang X, Drago F, Ma M, Ozsvar Kozma M, Yasin F, Saady Y, Kothari H, Zhao TX, Shi GP, McNamara CA, Binder CJ, Sage AP, Tarkin JM, Mallat Z, Nus M. Marginal zone B cells produce 'natural' atheroprotective IgM antibodies in a T cell-dependent manner. Cardiovasc Res 2024; 120:318-328. [PMID: 38381113 PMCID: PMC10939463 DOI: 10.1093/cvr/cvae027] [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: 09/06/2023] [Revised: 11/10/2023] [Accepted: 12/12/2023] [Indexed: 02/22/2024] Open
Abstract
AIMS The adaptive immune response plays an important role in atherosclerosis. In response to a high-fat/high-cholesterol (HF/HC) diet, marginal zone B (MZB) cells activate an atheroprotective programme by regulating the differentiation and accumulation of 'poorly differentiated' T follicular helper (Tfh) cells. On the other hand, Tfh cells activate the germinal centre response, which promotes atherosclerosis through the production of class-switched high-affinity antibodies. We therefore investigated the direct role of Tfh cells and the role of IL18 in Tfh differentiation in atherosclerosis. METHODS AND RESULTS We generated atherosclerotic mouse models with selective genetic deletion of Tfh cells, MZB cells, or IL18 signalling in Tfh cells. Surprisingly, mice lacking Tfh cells had increased atherosclerosis. Lack of Tfh not only reduced class-switched IgG antibodies against oxidation-specific epitopes (OSEs) but also reduced atheroprotective natural IgM-type anti-phosphorylcholine (PC) antibodies, despite no alteration of natural B1 cells. Moreover, the absence of Tfh cells was associated with an accumulation of MZB cells with substantially reduced ability to secrete antibodies. In the same manner, MZB cell deficiency in Ldlr-/- mice was associated with a significant decrease in atheroprotective IgM antibodies, including natural anti-PC IgM antibodies. In humans, we found a positive correlation between circulating MZB-like cells and anti-OSE IgM antibodies. Finally, we identified an important role for IL18 signalling in HF/HC diet-induced Tfh. CONCLUSION Our findings reveal a previously unsuspected role of MZB cells in regulating atheroprotective 'natural' IgM antibody production in a Tfh-dependent manner, which could have important pathophysiological and therapeutic implications.
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Affiliation(s)
- James Harrison
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Stephen A Newland
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Wei Jiang
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Despoina Giakomidi
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Xiaohui Zhao
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Marc Clement
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
- Laboratory for Vascular Translational Sciences (LVTS), Université de Paris, INSERM U1148, Paris, France
| | - Leanne Masters
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Andrej Corovic
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Xian Zhang
- Department of Medicine, Brigham and Woman’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Fabrizio Drago
- Division of Cardiovascular Medicine, Department of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Marcella Ma
- Wellcome-MRC Institute of Metabolic Science and Medical Research Council Metabolic Diseases Unit, University of Cambridge, UK
| | - Maria Ozsvar Kozma
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Froher Yasin
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Yuta Saady
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Hema Kothari
- Division of Cardiovascular Medicine, Department of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Tian X Zhao
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Guo-Ping Shi
- Department of Medicine, Brigham and Woman’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Coleen A McNamara
- Division of Cardiovascular Medicine, Department of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Christoph J Binder
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Andrew P Sage
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Jason M Tarkin
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Ziad Mallat
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
- PARCC Inserm U970, Universite de Paris, Paris, France
| | - Meritxell Nus
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
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3
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Shu X, Wang J, Zeng H, Shao L. Progression of Notch signaling regulation of B cells under radiation exposure. Front Immunol 2024; 15:1339977. [PMID: 38524139 PMCID: PMC10957566 DOI: 10.3389/fimmu.2024.1339977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 02/14/2024] [Indexed: 03/26/2024] Open
Abstract
With the continuous development of nuclear technology, the radiation exposure caused by radiation therapy is a serious health hazard. It is of great significance to further develop effective radiation countermeasures. B cells easily succumb to irradiation exposure along with immunosuppressive response. The approach to ameliorate radiation-induced B cell damage is rarely studied, implying that the underlying mechanisms of B cell damage after exposure are eager to be revealed. Recent studies suggest that Notch signaling plays an important role in B cell-mediated immune response. Notch signaling is a critical regulator for B cells to maintain immune function. Although accumulating studies reported that Notch signaling contributes to the functionality of hematopoietic stem cells and T cells, its role in B cells is scarcely appreciated. Presently, we discussed the regulation of Notch signaling on B cells under radiation exposure to provide a scientific basis to prevent radiation-induced B cell damage.
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Affiliation(s)
- Xin Shu
- Department of Occupational Health and Toxicology, School of Public Health, Jiangxi Medical College, Nanchang University, Nanchang, China
- Jiangxi Provincial Key Laboratory of Preventive Medicine, Jiangxi Medical College, School of Public Health, Nanchang University, Nanchang, China
| | - Jie Wang
- Department of Histology and Embryology, School of Basic Medicine Sciences, Nanchang University, Nanchang, China
| | - Huihong Zeng
- Department of Histology and Embryology, School of Basic Medicine Sciences, Nanchang University, Nanchang, China
| | - Lijian Shao
- Department of Occupational Health and Toxicology, School of Public Health, Jiangxi Medical College, Nanchang University, Nanchang, China
- Jiangxi Provincial Key Laboratory of Preventive Medicine, Jiangxi Medical College, School of Public Health, Nanchang University, Nanchang, China
- Jiangxi Provincial Key Laboratory of Interdisciplinary Science, Nanchang University, Nanchang, China
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4
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Minutti CM, Piot C, Pereira da Costa M, Chakravarty P, Rogers N, Huerga Encabo H, Cardoso A, Loong J, Bessou G, Mionnet C, Langhorne J, Bonnet D, Dalod M, Tomasello E, Reis E Sousa C. Distinct ontogenetic lineages dictate cDC2 heterogeneity. Nat Immunol 2024; 25:448-461. [PMID: 38351322 PMCID: PMC10907303 DOI: 10.1038/s41590-024-01745-9] [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: 01/05/2023] [Accepted: 01/08/2024] [Indexed: 03/03/2024]
Abstract
Conventional dendritic cells (cDCs) include functionally and phenotypically diverse populations, such as cDC1s and cDC2s. The latter population has been variously subdivided into Notch-dependent cDC2s, KLF4-dependent cDC2s, T-bet+ cDC2As and T-bet- cDC2Bs, but it is unclear how all these subtypes are interrelated and to what degree they represent cell states or cell subsets. All cDCs are derived from bone marrow progenitors called pre-cDCs, which circulate through the blood to colonize peripheral tissues. Here, we identified distinct mouse pre-cDC2 subsets biased to give rise to cDC2As or cDC2Bs. We showed that a Siglec-H+ pre-cDC2A population in the bone marrow preferentially gave rise to Siglec-H- CD8α+ pre-cDC2As in tissues, which differentiated into T-bet+ cDC2As. In contrast, a Siglec-H- fraction of pre-cDCs in the bone marrow and periphery mostly generated T-bet- cDC2Bs, a lineage marked by the expression of LysM. Our results showed that cDC2A versus cDC2B fate specification starts in the bone marrow and suggest that cDC2 subsets are ontogenetically determined lineages, rather than cell states imposed by the peripheral tissue environment.
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Affiliation(s)
- Carlos M Minutti
- Immunobiology Laboratory, The Francis Crick Institute, London, UK.
- Immunoregulation Laboratory, Champalimaud Research, Champalimaud Centre for the Unknown, Lisbon, Portugal.
| | - Cécile Piot
- Immunobiology Laboratory, The Francis Crick Institute, London, UK
| | | | - Probir Chakravarty
- Bioinformatics and Biostatistics, The Francis Crick Institute, London, UK
| | - Neil Rogers
- Immunobiology Laboratory, The Francis Crick Institute, London, UK
| | | | - Ana Cardoso
- Immunobiology Laboratory, The Francis Crick Institute, London, UK
| | - Jane Loong
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, UK
| | - Gilles Bessou
- Aix-Marseille University, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Cyrille Mionnet
- Aix-Marseille University, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Jean Langhorne
- Malaria Immunology Laboratory, The Francis Crick Institute, London, UK
| | - Dominique Bonnet
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, UK
| | - Marc Dalod
- Aix-Marseille University, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Elena Tomasello
- Aix-Marseille University, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
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5
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Guimaraes EL, Dias DO, Hau WF, Julien A, Holl D, Garcia-Collado M, Savant S, Vågesjö E, Phillipson M, Jakobsson L, Göritz C. Corpora cavernosa fibroblasts mediate penile erection. Science 2024; 383:eade8064. [PMID: 38330107 DOI: 10.1126/science.ade8064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 12/19/2023] [Indexed: 02/10/2024]
Abstract
Penile erection is mediated by the corpora cavernosa, a trabecular-like vascular bed that enlarges upon vasodilation, but its regulation is not completely understood. Here, we show that perivascular fibroblasts in the corpora cavernosa support vasodilation by reducing norepinephrine availability. The effect on penile blood flow depends on the number of fibroblasts, which is regulated by erectile activity. Erection dynamically alters the positional arrangement of fibroblasts, temporarily down-regulating Notch signaling. Inhibition of Notch increases fibroblast numbers and consequently raises penile blood flow. Continuous Notch activation lowers fibroblast numbers and reduces penile blood perfusion. Recurrent erections stimulate fibroblast proliferation and limit vasoconstriction, whereas aging reduces the number of fibroblasts and lowers penile blood flow. Our findings reveal adaptive, erectile activity-dependent modulation of penile blood flow by fibroblasts.
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Affiliation(s)
| | - David Oliveira Dias
- Department of Cell and Molecular Biology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Wing Fung Hau
- Department of Cell and Molecular Biology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Anais Julien
- Department of Cell and Molecular Biology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Daniel Holl
- Department of Cell and Molecular Biology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Maria Garcia-Collado
- Department of Medical Biochemistry and Biophysics, Division of Vascular Biology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Soniya Savant
- Department of Cell and Molecular Biology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Evelina Vågesjö
- Department of Medical Cell Biology, Division of Integrative Physiology, Uppsala University, 751 23 Uppsala, Sweden
| | - Mia Phillipson
- Department of Medical Cell Biology, Division of Integrative Physiology, Uppsala University, 751 23 Uppsala, Sweden
| | - Lars Jakobsson
- Department of Medical Biochemistry and Biophysics, Division of Vascular Biology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Christian Göritz
- Department of Cell and Molecular Biology, Karolinska Institutet, 171 77 Stockholm, Sweden
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6
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Yu Y, Lu C, Yu W, Lei Y, Sun S, Liu P, Bai F, Chen Y, Chen J. B Cells Dynamic in Aging and the Implications of Nutritional Regulation. Nutrients 2024; 16:487. [PMID: 38398810 PMCID: PMC10893126 DOI: 10.3390/nu16040487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 02/01/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Aging negatively affects B cell production, resulting in a decrease in B-1 and B-2 cells and impaired antibody responses. Age-related B cell subsets contribute to inflammation. Investigating age-related alterations in the B-cell pool and developing targeted therapies are crucial for combating autoimmune diseases in the elderly. Additionally, optimal nutrition, including carbohydrates, amino acids, vitamins, and especially lipids, play a vital role in supporting immune function and mitigating the age-related decline in B cell activity. Research on the influence of lipids on B cells shows promise for improving autoimmune diseases. Understanding the aging B-cell pool and considering nutritional interventions can inform strategies for promoting healthy aging and reducing the age-related disease burden.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Juan Chen
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100091, China; (Y.Y.)
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7
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Ng C, Qin Y, Xia Y, Hu X, Zhao B. Jagged1 Acts as an RBP-J Target and Feedback Suppresses TNF-Mediated Inflammatory Osteoclastogenesis. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:1340-1347. [PMID: 37756541 PMCID: PMC10693321 DOI: 10.4049/jimmunol.2300317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 08/17/2023] [Indexed: 09/29/2023]
Abstract
TNF plays a crucial role in inflammation and bone resorption in various inflammatory diseases, including rheumatoid arthritis (RA). However, its direct ability to drive macrophages to differentiate into osteoclasts is limited. Although RBP-J is recognized as a key inhibitor of TNF-mediated osteoclastogenesis, the precise mechanisms that restrain TNF-induced differentiation of macrophages into osteoclasts are not fully elucidated. In this study, we identified that the Notch ligand Jagged1 is a previously unrecognized RBP-J target. The expression of Jagged1 is significantly induced by TNF mainly through RBP-J. The TNF-induced Jagged1 in turn functions as a feedback inhibitory regulator of TNF-mediated osteoclastogenesis. This feedback inhibition of osteoclastogenesis by Jagged1 does not exist in RANKL-induced mouse osteoclast differentiation, as RANKL does not induce Jagged1 expression. The Jagged1 level in peripheral blood monocytes/osteoclast precursors is decreased in RA compared with the nonerosive inflammatory disease systemic lupus erythematosus, suggesting a mechanism that contributes to increased osteoclast formation in RA. Moreover, recombinant Jagged1 suppresses human inflammatory osteoclastogenesis. Our findings identify Jagged1 as an RBP-J direct target that links TNF and Notch signaling pathways and restrains TNF-mediated osteoclastogenesis. Given that Jagged1 has no effect on TNF-induced expression of inflammatory genes, its use may present a new complementary therapeutic approach to mitigate inflammatory bone loss with little impact on the immune response in disease conditions.
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Affiliation(s)
- Courtney Ng
- Correspondence: Baohong Zhao, Ph.D. Hospital for Special Surgery, Research Institute R804, 535 East 70 Street, New York, NY 10021, 212-774-2772 (Tel), 646-714-6333 (Fax),
| | - Yongli Qin
- Department of Medicine, Weill Cornell Medical College, New York, New York, USA
| | - Yuhan Xia
- Correspondence: Baohong Zhao, Ph.D. Hospital for Special Surgery, Research Institute R804, 535 East 70 Street, New York, NY 10021, 212-774-2772 (Tel), 646-714-6333 (Fax),
| | - Xiaoyu Hu
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing, China
| | - Baohong Zhao
- Department of Medicine, Weill Cornell Medical College, New York, New York, USA
- Graduate Program in Cell and Development Biology, Weill Cornell Graduate School of Medical Sciences, New York, New York, USA
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8
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Deng J, Liu YJ, Wei WT, Huang QX, Zhao LP, Luo LY, Zhu Q, Zhang L, Chen Y, Ren YL, Jia SG, Lin YL, Yang J, Lv FH, Zhang HP, Li FE, Li L, Li MH. Single-cell transcriptome and metagenome profiling reveals the genetic basis of rumen functions and convergent developmental patterns in ruminants. Genome Res 2023; 33:1690-1707. [PMID: 37884341 PMCID: PMC10691550 DOI: 10.1101/gr.278239.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 09/17/2023] [Indexed: 10/28/2023]
Abstract
The rumen undergoes developmental changes during maturation. To characterize this understudied dynamic process, we profiled single-cell transcriptomes of about 308,000 cells from the rumen tissues of sheep and goats at 17 time points. We built comprehensive transcriptome and metagenome atlases from early embryonic to rumination stages, and recapitulated histomorphometric and transcriptional features of the rumen, revealing key transitional signatures associated with the development of ruminal cells, microbiota, and core transcriptional regulatory networks. In addition, we identified and validated potential cross-talk between host cells and microbiomes and revealed their roles in modulating the spatiotemporal expression of key genes in ruminal cells. Cross-species analyses revealed convergent developmental patterns of cellular heterogeneity, gene expression, and cell-cell and microbiome-cell interactions. Finally, we uncovered how the interactions can act upon the symbiotic rumen system to modify the processes of fermentation, fiber digestion, and immune defense. These results significantly enhance understanding of the genetic basis of the unique roles of rumen.
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Affiliation(s)
- Juan Deng
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Ya-Jing Liu
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Wen-Tian Wei
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Qi-Xuan Huang
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Li-Ping Zhao
- CAS Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences (CAS), Beijing 100101, China
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education and Key Laboratory of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China
| | - Ling-Yun Luo
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Qi Zhu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Lin Zhang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuan Chen
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Yan-Ling Ren
- Shandong Binzhou Academy of Animal Science and Veterinary Medicine, Binzhou 256600, China
| | - Shan-Gang Jia
- College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China
| | - Yu-Luan Lin
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Ji Yang
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Feng-Hua Lv
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Hong-Ping Zhang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Feng-E Li
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education and Key Laboratory of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China
| | - Li Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China;
| | - Meng-Hua Li
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
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9
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Chen HH, Yu YR, Hsiao YL, Chen SH, Lee CK. Plasmacytoid Dendritic Cells Enhance T-Independent B Cell Response through a p38 MAPK-STAT1 Axis. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:576-590. [PMID: 37427982 DOI: 10.4049/jimmunol.2200210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 06/12/2023] [Indexed: 07/11/2023]
Abstract
TLR signaling in B cells triggers their activation and differentiation independent of help from T cells. Plasmacytoid dendritic cells (pDCs) cooperate with B cells to boost TLR-stimulated T-independent humoral immunity; however, the molecular mechanisms remain elusive. In this study, we demonstrate that in the mouse system, the adjuvant effects of pDCs also occurred following challenge with pathogens and that follicular (FO) B cells were more sensitive to pDC-induced enhancement than were marginal zone (MZ) B cells. Moreover, pDCs migrated to the FO zones and interacted with FO B cells upon stimulation in vivo. CXCL10, a ligand for CXCR3 expressed on pDCs, was superinduced in the coculture system and facilitated the cooperative activation of B cells. Moreover, pDCs also promoted TLR-stimulated autoantibody production in FO B and MZ B cells. Ingenuity Pathway Analysis and gene set enrichment analysis revealed that type I IFN (IFN-I)-mediated JAK-STAT and Ras-MAPK pathways were highly enriched in R848-stimulated B cells cocultured with pDCs compared with B cells alone. Whereas IFN-I receptor 1 deficiency reduced pDC-enhanced B cell responses, STAT1 deficiency displayed a more pronounced defect. One of the STAT1-dependent but IFN-I-independent mechanisms was TLR-induced STAT1-S727 phosphorylation by p38 MAPK. Serine 727 to alanine mutation attenuated the synergism between pDCs and B cells. In conclusion, we uncover a molecular mechanism for pDC-enhanced B cell response and define a crucial role of the IFN-I/TLR-mediated signaling pathway through a p38 MAPK-STAT1 axis in controlling T-independent humoral immunity and providing a novel therapeutic target for treating autoimmune diseases.
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Affiliation(s)
- Hsin-Hsiang Chen
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ya-Ru Yu
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yu-Ling Hsiao
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Shun-Hua Chen
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chien-Kuo Lee
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
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10
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Deshotels L, Safa FM, Saba NS. NOTCH Signaling in Mantle Cell Lymphoma: Biological and Clinical Implications. Int J Mol Sci 2023; 24:10280. [PMID: 37373427 DOI: 10.3390/ijms241210280] [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: 05/17/2023] [Revised: 06/09/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Despite major progress in mantle cell lymphoma (MCL) therapeutics, MCL remains a deadly disease with a median survival not exceeding four years. No single driver genetic lesion has been described to solely give rise to MCL. The hallmark translocation t(11;14)(q13;q32) requires additional genetic alterations for the malignant transformation. A short list of recurrently mutated genes including ATM, CCND1, UBR5, TP53, BIRC3, NOTCH1, NOTCH2, and TRAF2 recently emerged as contributors to the pathogenesis of MCL. Notably, NOTCH1 and NOTCH2 were found to be mutated in multiple B cell lymphomas, including 5-10% of MCL, with most of these mutations occurring within the PEST domain of the protein. The NOTCH genes play a critical role in the early and late phases of normal B cell differentiation. In MCL, mutations in the PEST domain stabilize NOTCH proteins, rendering them resistant to degradation, which subsequently results in the upregulation of genes involved in angiogenesis, cell cycle progression, and cell migration and adhesion. At the clinical level, mutated NOTCH genes are associated with aggressive features in MCL, such as the blastoid and pleomorphic variants, a shorter response to treatment, and inferior survival. In this article, we explore in detail the role of NOTCH signaling in MCL biology and the ongoing efforts toward targeted therapeutic interventions.
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Affiliation(s)
- Leigh Deshotels
- Section of Hematology and Medical Oncology, Deming Department of Medicine, Tulane University, New Orleans, LA 70112, USA
| | - Firas M Safa
- Service d'hématologie, Centre Hospitalier du Mans, 72037 Le Mans, France
| | - Nakhle S Saba
- Section of Hematology and Medical Oncology, Deming Department of Medicine, Tulane University, New Orleans, LA 70112, USA
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11
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Cox EM, El-Behi M, Ries S, Vogt JF, Kohlhaas V, Michna T, Manfroi B, Al-Maarri M, Wanke F, Tirosh B, Pondarre C, Lezeau H, Yogev N, Mittenzwei R, Descatoire M, Weller S, Weill JC, Reynaud CA, Boudinot P, Jouneau L, Tenzer S, Distler U, Rensing-Ehl A, König C, Staniek J, Rizzi M, Magérus A, Rieux-Laucat F, Wunderlich FT, Hövelmeyer N, Fillatreau S. AKT activity orchestrates marginal zone B cell development in mice and humans. Cell Rep 2023; 42:112378. [PMID: 37060566 DOI: 10.1016/j.celrep.2023.112378] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 12/14/2022] [Accepted: 03/27/2023] [Indexed: 04/16/2023] Open
Abstract
The signals controlling marginal zone (MZ) and follicular (FO) B cell development remain incompletely understood. Here, we show that AKT orchestrates MZ B cell formation in mice and humans. Genetic models that increase AKT signaling in B cells or abolish its impact on FoxO transcription factors highlight the AKT-FoxO axis as an on-off switch for MZ B cell formation in mice. In humans, splenic immunoglobulin (Ig) D+CD27+ B cells, proposed as an MZ B cell equivalent, display higher AKT signaling than naive IgD+CD27- and memory IgD-CD27+ B cells and develop in an AKT-dependent manner from their precursors in vitro, underlining the conservation of this developmental pathway. Consistently, CD148 is identified as a receptor indicative of the level of AKT signaling in B cells, expressed at a higher level in MZ B cells than FO B cells in mice as well as humans.
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Affiliation(s)
- Eva-Maria Cox
- Institute for Molecular Medicine Mainz, University Hospital of Mainz, 55131 Mainz, Germany
| | - Mohamed El-Behi
- Institut Necker Enfants Malades, INSERM U1151-CNRS UMR 8253, 156-160, rue de Vaugirard, 75015 Paris, France
| | - Stefanie Ries
- Deutsches Rheuma-Forschungszentrum, a Leibniz Institute, 10117 Berlin, Germany
| | - Johannes F Vogt
- Institute for Molecular Medicine Mainz, University Hospital of Mainz, 55131 Mainz, Germany
| | - Vivien Kohlhaas
- Max Planck Institute for Metabolism Research Cologne, 50931 Cologne, Germany; Institute for Genetics, University of Cologne, 50931 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-associated Diseases (CECAD), 50931 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), 50931 Cologne, Germany; Center for Endocrinology, Diabetes and Preventive Medicine (CEDP) Cologne, 50931 Cologne, Germany
| | - Thomas Michna
- Institute for Immunology, University Medical Centre of the Johannes-Gutenberg University Mainz, Mainz, Germany
| | - Benoît Manfroi
- Institut Necker Enfants Malades, INSERM U1151-CNRS UMR 8253, 156-160, rue de Vaugirard, 75015 Paris, France
| | - Mona Al-Maarri
- Max Planck Institute for Metabolism Research Cologne, 50931 Cologne, Germany; Institute for Genetics, University of Cologne, 50931 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-associated Diseases (CECAD), 50931 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), 50931 Cologne, Germany; Center for Endocrinology, Diabetes and Preventive Medicine (CEDP) Cologne, 50931 Cologne, Germany
| | - Florian Wanke
- Institute for Molecular Medicine Mainz, University Hospital of Mainz, 55131 Mainz, Germany
| | - Boaz Tirosh
- The Hebrew University of Jerusalem, Institute for Drug Research, Jerusalem, Israel
| | - Corinne Pondarre
- Service de Pédiatrie Générale, Centre de Référence de la Drépanocytose, Centre Intercommunal de Créteil, Créteil, France; Inserm U955, Université Paris XII, Créteil, France
| | - Harry Lezeau
- Service de Pédiatrie Générale, Centre de Référence de la Drépanocytose, Centre Intercommunal de Créteil, Créteil, France; Inserm U955, Université Paris XII, Créteil, France
| | - Nir Yogev
- Faculty of Medicine, Department of Dermatology, University of Cologne, 50931 Cologne, Germany
| | - Romy Mittenzwei
- Institute for Molecular Medicine Mainz, University Hospital of Mainz, 55131 Mainz, Germany
| | - Marc Descatoire
- Laboratory of Immune Inherited Disorders, Department of Immunology and Allergology Lausanne Hospital CHUV, Lausanne, Switzerland
| | - Sandra Weller
- Institut Necker Enfants Malades, INSERM U1151-CNRS UMR 8253, 156-160, rue de Vaugirard, 75015 Paris, France
| | - Jean-Claude Weill
- Institut Necker Enfants Malades, INSERM U1151-CNRS UMR 8253, 156-160, rue de Vaugirard, 75015 Paris, France
| | - Claude-Agnès Reynaud
- Institut Necker Enfants Malades, INSERM U1151-CNRS UMR 8253, 156-160, rue de Vaugirard, 75015 Paris, France
| | - Pierre Boudinot
- Université Paris-Saclay, INRAE, UVSQ, VIM, 78350 Jouy-en-Josas, France
| | - Luc Jouneau
- Université Paris-Saclay, INRAE, UVSQ, VIM, 78350 Jouy-en-Josas, France
| | - Stefan Tenzer
- Institute for Immunology, University Medical Centre of the Johannes-Gutenberg University Mainz, Mainz, Germany; Research Centre for Immunotherapy (FZI), University Medical Center of the Johannes-Gutenberg University Mainz, Mainz, Germany; Helmholtz Institute for Translational Oncology Mainz (HI-TRON Mainz), Mainz, Germany
| | - Ute Distler
- Institute for Immunology, University Medical Centre of the Johannes-Gutenberg University Mainz, Mainz, Germany
| | - Anne Rensing-Ehl
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christoph König
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; University of Freiburg, Faculty of Biology, Schaenzlestrasse 1, 79104 Freiburg, Germany
| | - Julian Staniek
- Department of Rheumatology and Clinical Immunology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Marta Rizzi
- Department of Rheumatology and Clinical Immunology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Center for Chronic Immunodeficiency, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Division of Clinical and Experimental Immunology, Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Aude Magérus
- Université Paris Cité, Institut Imagine, Laboratory of Immunogenetics of Pediatric Autoimmune Diseases, INSERM UMR 1163, 75015 Paris, France
| | - Frederic Rieux-Laucat
- Université Paris Cité, Institut Imagine, Laboratory of Immunogenetics of Pediatric Autoimmune Diseases, INSERM UMR 1163, 75015 Paris, France
| | - F Thomas Wunderlich
- Max Planck Institute for Metabolism Research Cologne, 50931 Cologne, Germany; Institute for Genetics, University of Cologne, 50931 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-associated Diseases (CECAD), 50931 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), 50931 Cologne, Germany; Center for Endocrinology, Diabetes and Preventive Medicine (CEDP) Cologne, 50931 Cologne, Germany
| | - Nadine Hövelmeyer
- Institute for Molecular Medicine Mainz, University Hospital of Mainz, 55131 Mainz, Germany; Research Centre for Immunotherapy (FZI), University Medical Center of the Johannes-Gutenberg University Mainz, Mainz, Germany.
| | - Simon Fillatreau
- Institut Necker Enfants Malades, INSERM U1151-CNRS UMR 8253, 156-160, rue de Vaugirard, 75015 Paris, France; Université de Paris Cité, Paris Descartes, Faculté de Médecine, Paris, France; AP-HP, Hôpital Necker Enfants Malades, Paris, France.
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12
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Mesini N, Fiorcari S, Atene CG, Maffei R, Potenza L, Luppi M, Marasca R. Role of Notch2 pathway in mature B cell malignancies. Front Oncol 2023; 12:1073672. [PMID: 36686759 PMCID: PMC9846264 DOI: 10.3389/fonc.2022.1073672] [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: 10/18/2022] [Accepted: 12/13/2022] [Indexed: 01/05/2023] Open
Abstract
In recent decades, the Notch pathway has been characterized as a key regulatory signaling of cell-fate decisions evolutionarily conserved in many organisms and different tissues during lifespan. At the same time, many studies suggest a link between alterations of this signaling and tumor genesis or progression. In lymphopoiesis, the Notch pathway plays a fundamental role in the correct differentiation of T and B cells, but its deregulated activity leads to leukemic onset and evolution. Notch and its ligands Delta/Jagged exhibit a pivotal role in the crosstalk between leukemic cells and their environment. This review is focused in particular on Notch2 receptor activity. Members of Notch2 pathway have been reported to be mutated in Chronic Lymphocytic Leukemia (CLL), Splenic Marginal Zone Lymphoma (SMZL) and Nodal Marginal Zone Lymphoma (NMZL). CLL is a B cell malignancy in which leukemic clones establish supportive crosstalk with non-malignant cells of the tumor microenvironment to grow, survive, and resist even the new generation of drugs. SMZL and NMZL are indolent B cell neoplasms distinguished by a distinct pattern of dissemination. In SMZL leukemic cells affect mainly the spleen, bone marrow, and peripheral blood, while NMZL has a leading nodal distribution. Since Notch2 is involved in the commitment of leukemic cells to the marginal zone as a major regulator of B cell physiological differentiation, it is predominantly affected by the molecular lesions found in both SMZL and NMZL. In light of these findings, a better understanding of the Notch receptor family pathogenic role, in particular Notch2, is desirable because it is still incomplete, not only in the physiological development of B lymphocytes but also in leukemia progression and resistance. Several therapeutic strategies capable of interfering with Notch signaling, such as monoclonal antibodies, enzyme or complex inhibitors, are being analyzed. To avoid the unwanted multiple "on target" toxicity encountered during the systemic inhibition of Notch signaling, the study of an appropriate pharmaceutical formulation is a pressing need. This is why, to date, there are still no Notch-targeted therapies approved. An accurate analysis of the Notch pathway could be useful to drive the discovery of new therapeutic targets and the development of more effective therapies.
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Affiliation(s)
- Nicolò Mesini
- Department of Medical and Surgical Sciences, Section of Hematology, University of Modena and Reggio Emilia, Modena, Italy
| | - Stefania Fiorcari
- Department of Medical and Surgical Sciences, Section of Hematology, University of Modena and Reggio Emilia, Modena, Italy
| | - Claudio Giacinto Atene
- Department of Medical and Surgical Sciences, Section of Hematology, University of Modena and Reggio Emilia, Modena, Italy
| | - Rossana Maffei
- Hematology Unit, Department of Oncology and Hematology, Azienda-Ospedaliero Universitaria (AOU) of Modena, Modena, Italy
| | - Leonardo Potenza
- Department of Medical and Surgical Sciences, Section of Hematology, University of Modena and Reggio Emilia, Modena, Italy,Hematology Unit, Department of Oncology and Hematology, Azienda-Ospedaliero Universitaria (AOU) of Modena, Modena, Italy
| | - Mario Luppi
- Department of Medical and Surgical Sciences, Section of Hematology, University of Modena and Reggio Emilia, Modena, Italy,Hematology Unit, Department of Oncology and Hematology, Azienda-Ospedaliero Universitaria (AOU) of Modena, Modena, Italy
| | - Roberto Marasca
- Department of Medical and Surgical Sciences, Section of Hematology, University of Modena and Reggio Emilia, Modena, Italy,Hematology Unit, Department of Oncology and Hematology, Azienda-Ospedaliero Universitaria (AOU) of Modena, Modena, Italy,*Correspondence: Roberto Marasca,
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13
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Dong X, Tu H, Qin S, Bai X, Yang F, Li Z. Insights into the Roles of B Cells in Patients with Sepsis. J Immunol Res 2023; 2023:7408967. [PMID: 37128298 PMCID: PMC10148744 DOI: 10.1155/2023/7408967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 04/02/2023] [Accepted: 04/04/2023] [Indexed: 05/03/2023] Open
Abstract
Sepsis is a life-threatening yet common disease, still posing high mortality worldwide. Sepsis-related deaths primarily occur during immunosuppression; the disease can hamper the numbers and function of B cells, which mediate innate and adaptive immune responses to maintain immune homeostasis. Dysfunction of B cells, along with aggravated immunosuppression, are closely related to poor prognosis. However, B cells in patients with sepsis have garnered little attention. This article focuses on the significance of B-cell subsets, including regulatory B cells, in sepsis and how the counts and function of circulating B cells are affected in patients with sepsis. Finally, potential B-cell-related immunotherapies for sepsis are explored.
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Affiliation(s)
- Xijie Dong
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hao Tu
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Shuang Qin
- Department of Radiation Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiangjun Bai
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Fan Yang
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zhanfei Li
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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14
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Nielsen CM, Zhang X, Raygor K, Wang S, Bollen AW, Wang RA. Endothelial Rbpj deletion normalizes Notch4-induced brain arteriovenous malformation in mice. J Exp Med 2022; 220:213722. [PMID: 36441145 PMCID: PMC9700524 DOI: 10.1084/jem.20211390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 10/10/2022] [Accepted: 11/09/2022] [Indexed: 11/29/2022] Open
Abstract
Upregulation of Notch signaling is associated with brain arteriovenous malformation (bAVM), a disease that lacks pharmacological treatments. Tetracycline (tet)-regulatable endothelial expression of constitutively active Notch4 (Notch4*tetEC) from birth induced bAVMs in 100% of mice by P16. To test whether targeting downstream signaling, while sustaining the causal Notch4*tetEC expression, induces AVM normalization, we deleted Rbpj, a mediator of Notch signaling, in endothelium from P16, by combining tet-repressible Notch4*tetEC with tamoxifen-inducible Rbpj deletion. Established pathologies, including AV connection diameter, AV shunting, vessel tortuosity, intracerebral hemorrhage, tissue hypoxia, life expectancy, and arterial marker expression were improved, compared with Notch4*tetEC mice without Rbpj deletion. Similarly, Rbpj deletion from P21 induced advanced bAVM regression. After complete AVM normalization induced by repression of Notch4*tetEC, virtually no bAVM relapsed, despite Notch4*tetEC re-expression in adults. Thus, inhibition of endothelial Rbpj halted Notch4*tetEC bAVM progression, normalized bAVM abnormalities, and restored microcirculation, providing proof of concept for targeting a downstream mediator to treat AVM pathologies despite a sustained causal molecular lesion.
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Affiliation(s)
- Corinne M. Nielsen
- Laboratory for Accelerated Vascular Research, Department of Surgery, University of California, San Francisco, San Francisco, CA
| | - Xuetao Zhang
- Laboratory for Accelerated Vascular Research, Department of Surgery, University of California, San Francisco, San Francisco, CA
| | - Kunal Raygor
- Laboratory for Accelerated Vascular Research, Department of Surgery, University of California, San Francisco, San Francisco, CA
| | - Shaoxun Wang
- Laboratory for Accelerated Vascular Research, Department of Surgery, University of California, San Francisco, San Francisco, CA
| | - Andrew W. Bollen
- Department of Pathology, University of California, San Francisco, San Francisco, CA
| | - Rong A. Wang
- Laboratory for Accelerated Vascular Research, Department of Surgery, University of California, San Francisco, San Francisco, CA,Correspondence to Rong A. Wang:
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15
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Andreani V, Ramamoorthy S, Fässler R, Grosschedl R. Integrin β1 regulates marginal zone B cell differentiation and PI3K signaling. J Exp Med 2022; 220:213672. [PMID: 36350325 PMCID: PMC9814157 DOI: 10.1084/jem.20220342] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 08/03/2022] [Accepted: 09/23/2022] [Indexed: 11/10/2022] Open
Abstract
Marginal zone (MZ) B cells represent innate-like B cells that mediate a fast immune response. The adhesion of MZ B cells to the marginal sinus of the spleen is governed by integrins. Here, we address the question of whether β1-integrin has additional functions by analyzing Itgb1fl/flCD21Cre mice in which the β1-integrin gene is deleted in mature B cells. We find that integrin β1-deficient mice have a defect in the differentiation of MZ B cells and plasma cells. We show that integrin β1-deficient transitional B cells, representing the precursors of MZ B cells, have enhanced B cell receptor (BCR) signaling, altered PI3K and Ras/ERK pathways, and an enhanced interaction of integrin-linked kinase (ILK) with the adaptor protein Grb2. Moreover, the MZ B cell defect of integrin β1-deficient mice could, at least in part, be restored by a pharmacological inhibition of the PI3K pathway. Thus, β1-integrin has an unexpected function in the differentiation and function of MZ B cells.
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Affiliation(s)
- Virginia Andreani
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany,Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Freiburg, Germany,Virginia Andreani:
| | - Senthilkumar Ramamoorthy
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany,Institute of Medical Bioinformatics and Systems Medicine, Medical Center, University of Freiburg, Freiburg, Germany,Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Medical Center, University of Freiburg, Freiburg, Germany
| | | | - Rudolf Grosschedl
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany,Correspondence to Rudolf Grosschedl:
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16
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Li SY, Bhandary B, Gu X, DeFalco T. Perivascular cells support folliculogenesis in the developing ovary. Proc Natl Acad Sci U S A 2022; 119:e2213026119. [PMID: 36194632 PMCID: PMC9564831 DOI: 10.1073/pnas.2213026119] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 09/07/2022] [Indexed: 11/18/2022] Open
Abstract
Supporting cells of the ovary, termed granulosa cells, are essential for ovarian differentiation and oogenesis by providing a nurturing environment for oocyte maintenance and maturation. Granulosa cells are specified in the fetal and perinatal ovary, and sufficient numbers of granulosa cells are critical for the establishment of follicles and the oocyte reserve. Identifying the cellular source from which granulosa cells and their progenitors are derived is an integral part of efforts to understand basic ovarian biology and the etiology of female infertility. In particular, the contribution of mesenchymal cells, especially perivascular cells, to ovarian development is poorly understood but is likely to be a source of new information regarding ovarian function. Here we have identified a cell population in the fetal ovary, which is a Nestin-expressing perivascular cell type. Using lineage tracing and ex vivo organ culture methods, we determined that perivascular cells are multipotent progenitors that contribute to granulosa, thecal, and pericyte cell lineages in the ovary. Maintenance of these progenitors is dependent on ovarian vasculature, likely reliant on endothelial-mesenchymal Notch signaling interactions. Depletion of Nestin+ progenitors resulted in a disruption of granulosa cell specification and in an increased number of germ cell cysts that fail to break down, leading to polyovular ovarian follicles. These findings highlight a cell population in the ovary and uncover a key role for vasculature in ovarian differentiation, which may lead to insights into the origins of female gonad dysgenesis and infertility.
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Affiliation(s)
- Shu-Yun Li
- Reproductive Sciences Center, Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229
| | - Bidur Bhandary
- Reproductive Sciences Center, Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229
| | - Xiaowei Gu
- Reproductive Sciences Center, Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229
| | - Tony DeFalco
- Reproductive Sciences Center, Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45267
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17
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Selhorst S, Nakisli S, Kandalai S, Adhicary S, Nielsen CM. Pathological pericyte expansion and impaired endothelial cell-pericyte communication in endothelial Rbpj deficient brain arteriovenous malformation. Front Hum Neurosci 2022; 16:974033. [PMID: 36147294 PMCID: PMC9485665 DOI: 10.3389/fnhum.2022.974033] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 08/15/2022] [Indexed: 11/27/2022] Open
Abstract
Pericytes, like vascular smooth muscle cells, are perivascular cells closely associated with blood vessels throughout the body. Pericytes are necessary for vascular development and homeostasis, with particularly critical roles in the brain, where they are involved in regulating cerebral blood flow and establishing the blood-brain barrier. A role for pericytes during neurovascular disease pathogenesis is less clear—while some studies associate decreased pericyte coverage with select neurovascular diseases, others suggest increased pericyte infiltration in response to hypoxia or traumatic brain injury. Here, we used an endothelial loss-of-function Recombination signal binding protein for immunoglobulin kappa J region (Rbpj)/Notch mediated mouse model of brain arteriovenous malformation (AVM) to investigate effects on pericytes during neurovascular disease pathogenesis. We tested the hypothesis that pericyte expansion, via morphological changes, and Platelet-derived growth factor B/Platelet-derived growth factor receptor β (Pdgf-B/Pdgfrβ)-dependent endothelial cell-pericyte communication are affected, during the pathogenesis of Rbpj mediated brain AVM in mice. Our data show that pericyte coverage of vascular endothelium expanded pathologically, to maintain coverage of vascular abnormalities in brain and retina, following endothelial deletion of Rbpj. In Rbpj-mutant brain, pericyte expansion was likely attributed to cytoplasmic process extension and not to increased pericyte proliferation. Despite expanding overall area of vessel coverage, pericytes from Rbpj-mutant brains showed decreased expression of Pdgfrβ, Neural (N)-cadherin, and cluster of differentiation (CD)146, as compared to controls, which likely affected Pdgf-B/Pdgfrβ-dependent communication and appositional associations between endothelial cells and pericytes in Rbpj-mutant brain microvessels. By contrast, and perhaps by compensatory mechanism, endothelial cells showed increased expression of N-cadherin. Our data identify cellular and molecular effects on brain pericytes, following endothelial deletion of Rbpj, and suggest pericytes as potential therapeutic targets for Rbpj/Notch related brain AVM.
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Affiliation(s)
- Samantha Selhorst
- Department of Biological Sciences, Ohio University, Athens, OH, United States
- Honors Tutorial College, Ohio University, Athens, OH, United States
| | - Sera Nakisli
- Department of Biological Sciences, Ohio University, Athens, OH, United States
- Neuroscience Program, Ohio University, Athens, OH, United States
| | - Shruthi Kandalai
- Department of Biological Sciences, Ohio University, Athens, OH, United States
- Honors Tutorial College, Ohio University, Athens, OH, United States
| | - Subhodip Adhicary
- Department of Biological Sciences, Ohio University, Athens, OH, United States
- Translational Biomedical Sciences Program, Ohio University, Athens, OH, United States
| | - Corinne M. Nielsen
- Department of Biological Sciences, Ohio University, Athens, OH, United States
- Neuroscience Program, Ohio University, Athens, OH, United States
- Molecular and Cellular Biology Program, Ohio University, Athens, OH, United States
- *Correspondence: Corinne M. Nielsen,
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18
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IRF4 as an Oncogenic Master Transcription Factor. Cancers (Basel) 2022; 14:cancers14174314. [PMID: 36077849 PMCID: PMC9454692 DOI: 10.3390/cancers14174314] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/30/2022] [Accepted: 08/31/2022] [Indexed: 11/25/2022] Open
Abstract
Simple Summary Master transcription factors regulate essential developmental processes and cellular maintenance that characterize cell identity. Many of them also serve as oncogenes when aberrantly expressed or activated. IRF4 is one of prime examples of oncogenic master transcription factors that has been implicated in various mature lymphoid neoplasms. IRF4 forms unique regulatory circuits and induces oncogenic transcription programs through the interactions with upstream pathways and binding partners. Abstract IRF4 is a transcription factor in the interferon regulatory factor (IRF) family. Since the discovery of this gene, various research fields including immunology and oncology have highlighted the unique characteristics and the importance of IRF4 in several biological processes that distinguish it from other IRF family members. In normal lymphocyte development and immunity, IRF4 mediates critical immune responses via interactions with upstream signaling pathways, such as the T-cell receptor and B-cell receptor pathways, as well as their binding partners, which are uniquely expressed in each cell type. On the other hand, IRF4 acts as an oncogene in various mature lymphoid neoplasms when abnormally expressed. IRF4 induces several oncogenes, such as MYC, as well as genes that characterize each cell type by utilizing its ability as a master regulator of immunity. IRF4 and its upstream factor NF-κB form a transcriptional regulatory circuit, including feedback and feedforward loops, to maintain the oncogenic transcriptional program in malignant lymphoid cells. In this review article, we provide an overview of the molecular functions of IRF4 in mature lymphoid neoplasms and highlight its upstream and downstream pathways, as well as the regulatory circuits mediated by IRF4.
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19
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Bayer M, Boller S, Ramamoothy S, Zolotarev N, Cauchy P, Iwanami N, Mittler G, Boehm T, Grosschedl R. Tnpo3 enables EBF1 function in conditions of antagonistic Notch signaling. Genes Dev 2022; 36:901-915. [PMID: 36167471 PMCID: PMC9575695 DOI: 10.1101/gad.349696.122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 09/02/2022] [Indexed: 02/03/2023]
Abstract
Transcription factor EBF1 (early B cell factor 1) acts as a key regulator of B cell specification. The transcriptional network in which EBF1 operates has been extensively studied; however, the regulation of EBF1 function remains poorly defined. By mass spectrometric analysis of proteins associated with endogenous EBF1 in pro-B cells, we identified the nuclear import receptor Transportin-3 (Tnpo3) and found that it interacts with the immunoglobulin-like fold domain of EBF1. We delineated glutamic acid 271 of EBF1 as a critical residue for the association with Tnpo3. EBF1E271A showed normal nuclear localization; however, it had an impaired B cell programming ability in conditions of Notch signaling, as determined by retroviral transduction of Ebf1 -/- progenitors. By RNA-seq analysis of EBF1E271A-expressing progenitors, we found an up-regulation of T lineage determinants and down-regulation of early B genes, although similar chromatin binding of EBF1E271A and EBF1wt was detected in pro-B cells expressing activated Notch1. B lineage-specific inactivation of Tnpo3 in mice resulted in a block of early B cell differentiation, accompanied by a down-regulation of B lineage genes and up-regulation of T and NK lineage genes. Taken together, our observations suggest that Tnpo3 ensures B cell programming by EBF1 in nonpermissive conditions.
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Affiliation(s)
- Marc Bayer
- Laboratory of Cellular and Molecular Immunology, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Sören Boller
- Laboratory of Cellular and Molecular Immunology, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Senthilkumar Ramamoothy
- Laboratory of Cellular and Molecular Immunology, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Nikolay Zolotarev
- Laboratory of Cellular and Molecular Immunology, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Pierre Cauchy
- Laboratory of Cellular and Molecular Immunology, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Norimasa Iwanami
- Department of Developmental Immunology, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Gerhard Mittler
- Laboratory of Cellular and Molecular Immunology, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Thomas Boehm
- Department of Developmental Immunology, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
- Faculty of Medicine, University of Freiburg, 79108 Freiburg, Germany
| | - Rudolf Grosschedl
- Laboratory of Cellular and Molecular Immunology, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
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20
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Amanda S, Tan TK, Iida S, Sanda T. Lineage- and Stage-specific Oncogenicity of IRF4. Exp Hematol 2022; 114:9-17. [PMID: 35908629 DOI: 10.1016/j.exphem.2022.07.300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/22/2022] [Accepted: 07/25/2022] [Indexed: 11/04/2022]
Abstract
Dysregulation of transcription factor genes represents a unique molecular etiology of hematological malignancies. A number of transcription factors that play a role in hematopoietic cell development, lymphocyte activation or their maintenance have been identified as oncogenes or tumor suppressors. Many of them exert oncogenic abilities in a context-dependent manner by governing the key transcriptional program unique to each cell type. IRF4, a member of the interferon regulatory factor (IRF) family, acts as an essential regulator of the immune system and is a prime example of a stage-specific oncogene. The expression and oncogenicity of IRF4 are restricted to mature lymphoid neoplasms, while IRF4 potentially serves as a tumor suppressor in other cellular contexts. This is in marked contrast to its immediate downstream target, MYC, which can cause cancers in a variety of tissues. In this review article, we provide an overview of the roles of IRF4 in the development of the normal immune system and lymphoid neoplasms and discuss the potential mechanisms of lineage- and stage-specific oncogenicity of IRF4.
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Affiliation(s)
- Stella Amanda
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore
| | - Tze King Tan
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore
| | - Shinsuke Iida
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, 467-8601 Japan
| | - Takaomi Sanda
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 117599, Singapore..
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21
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Filipović M, Flegar D, Šućur A, Šisl D, Kavazović I, Antica M, Kelava T, Kovačić N, Grčević D. Inhibition of Notch Signaling Stimulates Osteoclastogenesis From the Common Trilineage Progenitor Under Inflammatory Conditions. Front Immunol 2022; 13:902947. [PMID: 35865541 PMCID: PMC9294223 DOI: 10.3389/fimmu.2022.902947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/25/2022] [Indexed: 11/13/2022] Open
Abstract
Osteoclasts, macrophages and dendritic cells (DCs) can be derived from a common trilineage myeloid progenitor of hematopoietic origin. Progenitor commitment is susceptible to regulation through Notch signaling. Our aim was to determine the effects of Notch modulation on trilineage progenitor commitment and functional properties of differentiated cells under inflammatory conditions. We used the conditional inducible CX3CR1CreERT2 mouse strain to achieve overexpression of the Notch 1 intracellular domain (NICD1) or to inhibit Notch signaling via deletion of the transcription factor RBP-J in a bone marrow population, used as a source of the trilineage progenitor (CD45+Ly6G−CD3−B220−NK1.1−CD11b–/loCD115+). Cre-recombinase, under the control of the CX3CR1 promoter, expressed in the monocyte/macrophage lineage, was induced in vitro by 4-hydroxytamoxifen. Differentiation of osteoclasts was induced by M-CSF/RANKL; macrophages by M-CSF; DCs by IL-4/GM-CSF, and inflammation by LPS. Functionally, DCs were tested for the ability to process and present antigen, macrophages to phagocytose E. coli particles, and osteoclasts to resorb bone and express tartrate-resistant acid phosphatase (TRAP). We found that Notch 1 signal activation suppressed osteoclast formation, whereas disruption of the Notch canonical pathway enhanced osteoclastogenesis, resulting in a higher number and size of osteoclasts. RANK protein and Ctsk gene expression were upregulated in osteoclastogenic cultures from RBP-J+ mice, with the opposing results in NICD1+ mice. Notch modulation did not affect the number of in vitro differentiated macrophages and DCs. However, RBP-J deletion stimulated Il12b and Cd86 expression in macrophages and DCs, respectively. Functional assays under inflammatory conditions confirmed that Notch silencing amplifies TRAP expression by osteoclasts, whereas the enhanced phagocytosis by macrophages was observed in both NICD1+ and RBP-J+ strains. Finally, antigen presentation by LPS-stimulated DCs was significantly downregulated with NICD1 overexpression. This experimental setting allowed us to define a cell-autonomous response to Notch signaling at the trilineage progenitor stage. Although Notch signaling modulation affected the activity of all three lineages, the major effect was observed in osteoclasts, resulting in enhanced differentiation and function with inhibition of canonical Notch signaling. Our results indicate that Notch signaling participates as the negative regulator of osteoclast activity during inflammation, which may be relevant in immune and bone diseases.
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Affiliation(s)
- Maša Filipović
- Department of Physiology and Immunology, University of Zagreb School of Medicine, Zagreb, Croatia
- Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Darja Flegar
- Department of Physiology and Immunology, University of Zagreb School of Medicine, Zagreb, Croatia
- Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Alan Šućur
- Department of Physiology and Immunology, University of Zagreb School of Medicine, Zagreb, Croatia
- Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Dino Šisl
- Department of Physiology and Immunology, University of Zagreb School of Medicine, Zagreb, Croatia
- Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Inga Kavazović
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | | | - Tomislav Kelava
- Department of Physiology and Immunology, University of Zagreb School of Medicine, Zagreb, Croatia
- Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Nataša Kovačić
- Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
- Department of Anatomy, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Danka Grčević
- Department of Physiology and Immunology, University of Zagreb School of Medicine, Zagreb, Croatia
- Laboratory for Molecular Immunology, Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
- *Correspondence: Danka Grčević,
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22
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Chapman AD, Selhorst S, LaComb J, LeDantec-Boswell A, Wohl TR, Adhicary S, Nielsen CM. Endothelial Rbpj Is Required for Cerebellar Morphogenesis and Motor Control in the Early Postnatal Mouse Brain. CEREBELLUM (LONDON, ENGLAND) 2022:10.1007/s12311-022-01429-w. [PMID: 35716334 DOI: 10.1007/s12311-022-01429-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/07/2022] [Indexed: 11/25/2022]
Abstract
Intercellular influences are necessary for coordinated development and function of vascular and neural components in the brain. In the early postnatal period after birth, the mammalian cerebellum undergoes extensive morphogenesis - developing its characteristic lobules, organizing its diverse cell types into defined cellular layers, and establishing neural circuits that support cerebellar function, such as coordinated movement. In parallel, the cerebellar vasculature undergoes extensive postnatal growth and maturation, keeping pace with the expanding neural compartment. Endothelial deletion of Rbpj leads to neurovascular abnormalities in mice, including arteriovenous (AV) shunts that supplant capillaries and instead direct high-pressure/high-flow arterial blood directly to veins. Gross and histopathological cerebellar abnormalities, associated with these Rbpj-mediated brain AV malformations (AVMs), led to our hypothesis that early postnatal morphogenesis and lamination of cerebellum was perturbed in mice harboring endothelial Rbpj deficiency from birth. Here, we show that endothelial Rbpj-mutant mice developed enlarged vascular malformations on the cerebellar surface, by 2-week post-Rbpj deletion. In addition, outgrowth of cerebellar lobules was impaired through decreased cell proliferation, but not increased apoptosis, in the external granule layer. Molecular layer thickness was reduced, and the Purkinje layer was affected, by decreased Purkinje cell number, primary dendrite length, and dendritic arbor density. Endothelial deletion of Rbpj also led to impaired motor behaviors, consistent with abnormal cerebellar morphogenesis and lamination. Thus, our data suggest that Rbpj is required, in early postnatal vascular endothelium, to ensure proper cerebellar outgrowth, morphogenesis, and function in mice.
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Affiliation(s)
- Amelia D Chapman
- Department of Biological Sciences, Ohio University, 57 Oxbow Trail, Irvine Hall 107, Athens, OH, 45701, USA
- Honors Tutorial College, Ohio University, Athens, OH, 45701, USA
| | - Samantha Selhorst
- Department of Biological Sciences, Ohio University, 57 Oxbow Trail, Irvine Hall 107, Athens, OH, 45701, USA
- Honors Tutorial College, Ohio University, Athens, OH, 45701, USA
| | - Julia LaComb
- Department of Biological Sciences, Ohio University, 57 Oxbow Trail, Irvine Hall 107, Athens, OH, 45701, USA
| | - Alexis LeDantec-Boswell
- Department of Biological Sciences, Ohio University, 57 Oxbow Trail, Irvine Hall 107, Athens, OH, 45701, USA
| | - Timothy R Wohl
- Department of Biological Sciences, Ohio University, 57 Oxbow Trail, Irvine Hall 107, Athens, OH, 45701, USA
- Honors Tutorial College, Ohio University, Athens, OH, 45701, USA
| | - Subhodip Adhicary
- Department of Biological Sciences, Ohio University, 57 Oxbow Trail, Irvine Hall 107, Athens, OH, 45701, USA
- Translational Biomedical Sciences Program, Ohio University, Athens, OH, 45701, USA
| | - Corinne M Nielsen
- Department of Biological Sciences, Ohio University, 57 Oxbow Trail, Irvine Hall 107, Athens, OH, 45701, USA.
- Molecular and Cellular Biology Program, Ohio University, Athens, OH, 45701, USA.
- Neuroscience Program, Ohio University, Athens, OH, 45701, USA.
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23
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Multiple Mechanisms of NOTCH1 Activation in Chronic Lymphocytic Leukemia: NOTCH1 Mutations and Beyond. Cancers (Basel) 2022; 14:cancers14122997. [PMID: 35740661 PMCID: PMC9221163 DOI: 10.3390/cancers14122997] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/14/2022] [Accepted: 06/14/2022] [Indexed: 11/20/2022] Open
Abstract
Simple Summary Mutations of the NOTCH1 gene are a validated prognostic marker in chronic lymphocytic leukemia and a potential predictive marker for anti-CD20-based therapies. At present, the most frequent pathological alteration of the NOTCH1 gene is due to somatic genetic mutations, which have a multifaceted functional impact. However, beside NOTCH1 mutations, other factors may lead to activation of the NOTCH1 pathway, and these include mutations of FBXW7, MED12, SPEN, SF3B1 as well as other B-cell pathways. Understanding the preferential strategies though which CLL cells hijack NOTCH1 signaling may present important clues for designing targeted treatment strategies for the management of CLL. Abstract The Notch signaling pathway plays a fundamental role for the terminal differentiation of multiple cell types, including B and T lymphocytes. The Notch receptors are transmembrane proteins that, upon ligand engagement, undergo multiple processing steps that ultimately release their intracytoplasmic portion. The activated protein ultimately operates as a nuclear transcriptional co-factor, whose stability is finely regulated. The Notch pathway has gained growing attention in chronic lymphocytic leukemia (CLL) because of the high rate of somatic mutations of the NOTCH1 gene. In CLL, NOTCH1 mutations represent a validated prognostic marker and a potential predictive marker for anti-CD20-based therapies, as pathological alterations of the Notch pathway can provide significant growth and survival advantage to neoplastic clone. However, beside NOTCH1 mutation, other events have been demonstrated to perturb the Notch pathway, namely somatic mutations of upstream, or even apparently unrelated, proteins such as FBXW7, MED12, SPEN, SF3B1, as well as physiological signals from other pathways such as the B-cell receptor. Here we review these mechanisms of activation of the NOTCH1 pathway in the context of CLL; the resulting picture highlights how multiple different mechanisms, that might occur under specific genomic, phenotypic and microenvironmental contexts, ultimately result in the same search for proliferative and survival advantages (through activation of MYC), as well as immune escape and therapy evasion (from anti-CD20 biological therapies). Understanding the preferential strategies through which CLL cells hijack NOTCH1 signaling may present important clues for designing targeted treatment strategies for the management of CLL.
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24
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Gómez Atria D, Gaudette BT, Londregan J, Kelly S, Perkey E, Allman A, Srivastava B, Koch U, Radtke F, Ludewig B, Siebel CW, Ryan RJ, Robertson TF, Burkhardt JK, Pear WS, Allman D, Maillard I. Stromal Notch ligands foster lymphopenia-driven functional plasticity and homeostatic proliferation of naïve B cells. J Clin Invest 2022; 132:158885. [PMID: 35579963 PMCID: PMC9246379 DOI: 10.1172/jci158885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 05/12/2022] [Indexed: 11/17/2022] Open
Abstract
In lymphopenic environments, secondary lymphoid organs regulate the size of B and T-cell compartments by supporting homeostatic proliferation of mature lymphocytes. The molecular mechanisms underlying these responses and their functional consequences remain incompletely understood. To evaluate homeostasis of the mature B-cell pool during lymphopenia, we turned to an adoptive transfer model of purified follicular B-cells into Rag2-/- mouse recipients. Highly purified follicular B-cells transdifferentiated into marginal zone-like B-cells when transferred into Rag2-/- lymphopenic hosts, but not into wild-type hosts. In lymphopenic spleens, transferred B-cells gradually lost their follicular phenotype and acquired characteristics of marginal zone B-cells, as judged by cell surface phenotype, expression of integrins and chemokine receptors, positioning close to the marginal sinus, and an ability to rapidly generate functional plasma cells. Initiation of follicular to marginal zone B-cell transdifferentiation preceded proliferation. Furthermore, the transdifferentiation process was dependent on Notch2 receptors in B-cells and expression of Delta-like1 Notch ligands by splenic Ccl19-Cre+ fibroblastic stromal cells. Gene expression analysis showed rapid induction of Notch-regulated transcripts followed by upregulated Myc expression and acquisition of broad transcriptional features of marginal zone B-cells. Thus, naïve mature B-cells are endowed with plastic transdifferentiation potential in response to increased stromal Notch ligand availability during lymphopenia.
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Affiliation(s)
- Daniela Gómez Atria
- Department of Medicine, University of Pennsylvania, Philadelphia, United States of America
| | - Brian T Gaudette
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, United States of America
| | - Jennifer Londregan
- Immunology Graduate Group, University of Pennsylvania, Philadelphia, United States of America
| | - Samantha Kelly
- Department of Medicine, University of Pennsylvania, Philadelphia, United States of America
| | - Eric Perkey
- Graduate Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, United States of America
| | - Anneka Allman
- Department of Medicine, University of Pennsylvania, Philadelphia, United States of America
| | - Bhaskar Srivastava
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, United States of America
| | - Ute Koch
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Freddy Radtke
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | | | - Christian W Siebel
- Department of Discovery Oncology, Genentech Inc., South San Francisco, United States of America
| | - Russell Jh Ryan
- Department of Pathology, University of Michigan, Ann Arbor, United States of America
| | - Tanner F Robertson
- Immunology Graduate Group, University of Pennsylvania, Philadelphia, United States of America
| | - Janis K Burkhardt
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, United States of America
| | - Warren S Pear
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, United States of America
| | - David Allman
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, United States of America
| | - Ivan Maillard
- University of Pennsylvania, Philadelphia, United States of America
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25
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A conserved YAP/Notch/REST network controls the neuroendocrine cell fate in the lungs. Nat Commun 2022; 13:2690. [PMID: 35577801 PMCID: PMC9110333 DOI: 10.1038/s41467-022-30416-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 04/20/2022] [Indexed: 12/30/2022] Open
Abstract
The Notch pathway is a conserved cell-cell communication pathway that controls cell fate decisions. Here we sought to determine how Notch pathway activation inhibits the neuroendocrine cell fate in the lungs, an archetypal process for cell fate decisions orchestrated by Notch signaling that has remained poorly understood at the molecular level. Using intratumoral heterogeneity in small-cell lung cancer as a tractable model system, we uncovered a role for the transcriptional regulators REST and YAP as promoters of the neuroendocrine to non-neuroendocrine transition. We further identified the specific neuroendocrine gene programs repressed by REST downstream of Notch in this process. Importantly, we validated the importance of REST and YAP in neuroendocrine to non-neuroendocrine cell fate switches in both developmental and tissue repair processes in the lungs. Altogether, these experiments identify conserved roles for REST and YAP in Notch-driven inhibition of the neuroendocrine cell fate in embryonic lungs, adult lungs, and lung cancer.
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26
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Duvall K, Crist L, Perl AJ, Pode Shakked N, Chaturvedi P, Kopan R. Revisiting the role of Notch in nephron segmentation confirms a role for proximal fate selection during mouse and human nephrogenesis. Development 2022; 149:275412. [PMID: 35451473 PMCID: PMC9188758 DOI: 10.1242/dev.200446] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 04/14/2022] [Indexed: 12/16/2022]
Abstract
Notch signaling promotes maturation of nephron epithelia, but its proposed contribution to nephron segmentation into proximal and distal domains has been called into doubt. We leveraged single cell and bulk RNA-seq, quantitative immunofluorescent lineage/fate tracing, and genetically modified human induced pluripotent stem cells (iPSCs) to revisit this question in developing mouse kidneys and human kidney organoids. We confirmed that Notch signaling is needed for maturation of all nephron lineages, and thus mature lineage markers fail to detect a fate bias. By contrast, early markers identified a distal fate bias in cells lacking Notch2, and a concomitant increase in early proximal and podocyte fates in cells expressing hyperactive Notch1 was observed. Orthogonal support for a conserved role for Notch signaling in the distal/proximal axis segmentation is provided by the demonstration that nicastrin (NCSTN)-deficient human iPSC-derived organoids differentiate into TFA2B+ distal tubule and CDH1+ connecting segment progenitors, but not into HNF4A+ or LTL+ proximal progenitors.
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Affiliation(s)
- Kathryn Duvall
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA.,Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Lauren Crist
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Alison J Perl
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA.,Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Naomi Pode Shakked
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA.,Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.,Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Praneet Chaturvedi
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA.,Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Raphael Kopan
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA.,Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
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27
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Sevilla-Movilla S, Fuentes P, Rodríguez-García Y, Arellano-Sánchez N, Krenn PW, de Val SI, Montero-Herradón S, García-Ceca J, Burdiel-Herencia V, Gardeta SR, Aguilera-Montilla N, Barrio-Alonso C, Crainiciuc G, Bouvard D, García-Pardo A, Zapata AG, Hidalgo A, Fässler R, Carrasco YR, Toribio ML, Teixidó J. ICAP-1 loss impairs CD8 + thymocyte development and leads to reduced marginal zone B cells in mice. Eur J Immunol 2022; 52:1228-1242. [PMID: 35491946 PMCID: PMC9543158 DOI: 10.1002/eji.202149560] [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: 08/02/2021] [Revised: 03/15/2022] [Accepted: 04/29/2022] [Indexed: 11/12/2022]
Abstract
ICAP‐1 regulates β1‐integrin activation and cell adhesion. Here, we used ICAP‐1‐null mice to study ICAP‐1 potential involvement during immune cell development and function. Integrin α4β1‐dependent adhesion was comparable between ICAP‐1‐null and control thymocytes, but lack of ICAP‐1 caused a defective single‐positive (SP) CD8+ cell generation, thus, unveiling an ICAP‐1 involvement in SP thymocyte development. ICAP‐1 bears a nuclear localization signal and we found it displayed a strong nuclear distribution in thymocytes. Interestingly, there was a direct correlation between the lack of ICAP‐1 and reduced levels in SP CD8+ thymocytes of Runx3, a transcription factor required for CD8+ thymocyte generation. In the spleen, ICAP‐1 was found evenly distributed between cytoplasm and nuclear fractions, and ICAP‐1–/– spleen T and B cells displayed upregulation of α4β1‐mediated adhesion, indicating that ICAP‐1 negatively controls their attachment. Furthermore, CD3+‐ and CD19+‐selected spleen cells from ICAP‐1‐null mice showed reduced proliferation in response to T‐ and B‐cell stimuli, respectively. Finally, loss of ICAP‐1 caused a remarkable decrease in marginal zone B‐ cell frequencies and a moderate increase in follicular B cells. Together, these data unravel an ICAP‐1 involvement in the generation of SP CD8+ thymocytes and in the control of marginal zone B‐cell numbers.
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Affiliation(s)
- Silvia Sevilla-Movilla
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Patricia Fuentes
- Development and Function of the Immune System Unit, Centro de Biología Molecular Severo Ochoa, CSIC, Universidad Autónoma de Madrid, Madrid, Spain
| | - Yaiza Rodríguez-García
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Nohemi Arellano-Sánchez
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Peter W Krenn
- Department of Molecular Medicine, Max Planck Institute of Biochemistry, Martinsried, Germany.,Present address: Paris-Lodron Universität Salzburg, Austria
| | - Soledad Isern de Val
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Sara Montero-Herradón
- Department of Cell Biology; Faculty of Biology, Complutense University of Madrid, Madrid, 28040.,Spain and Health Research Institute, Hospital 12 de Octubre (imas12), Madrid, 28041, Spain
| | - Javier García-Ceca
- Department of Cell Biology; Faculty of Biology, Complutense University of Madrid, Madrid, 28040.,Spain and Health Research Institute, Hospital 12 de Octubre (imas12), Madrid, 28041, Spain
| | - Valeria Burdiel-Herencia
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Sofía R Gardeta
- Department on Immunology and Oncology, Centro Nacional de Biotecnología (CNB)-CSIC, Madrid, 28049, Spain
| | - Noemí Aguilera-Montilla
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Celia Barrio-Alonso
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain.,Present address: Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Georgiana Crainiciuc
- Area of Developmental and Cell Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, 28029, Spain.,Institute for Cardiovascular Prevention, Ludwig-Maximilians University, Munich, 80336, Germany
| | - Daniel Bouvard
- Centre de Recherche en Biologie Cellulaire de Montpellier, Montpellier, France
| | - Angeles García-Pardo
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Agustin G Zapata
- Department of Cell Biology; Faculty of Biology, Complutense University of Madrid, Madrid, 28040.,Spain and Health Research Institute, Hospital 12 de Octubre (imas12), Madrid, 28041, Spain
| | - Andrés Hidalgo
- Area of Developmental and Cell Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, 28029, Spain.,Institute for Cardiovascular Prevention, Ludwig-Maximilians University, Munich, 80336, Germany
| | - Reinhard Fässler
- Department of Molecular Medicine, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Yolanda R Carrasco
- Department on Immunology and Oncology, Centro Nacional de Biotecnología (CNB)-CSIC, Madrid, 28049, Spain
| | - Maria L Toribio
- Development and Function of the Immune System Unit, Centro de Biología Molecular Severo Ochoa, CSIC, Universidad Autónoma de Madrid, Madrid, Spain
| | - Joaquin Teixidó
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
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28
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Muri J, Corak B, Matsushita M, Baes M, Kopf M. Peroxisomes Are Critical for the Development and Maintenance of B1 and Marginal Zone B Cells but Dispensable for Follicular B Cells and T Cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 208:839-850. [PMID: 35074867 DOI: 10.4049/jimmunol.2100518] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 12/02/2021] [Indexed: 12/31/2022]
Abstract
Antioxidant systems maintain cellular redox (oxidation-reduction) homeostasis. In contrast with other key redox pathways, such as the thioredoxin system, glutathione, and NF-E2-related factor 2 (Nrf2), little is known about the function of the redox-sensitive organelle "peroxisome" in immune cells. In this study, we show that the absence of peroxisomes in conditional Pex5-deficient mice strikingly results in impaired homeostatic maintenance of innate-like B cells, namely, B1 and marginal zone B cells, which translates into a defective Ab response to Streptococcus pneumoniae Surprisingly, however, follicular B2 cell development, homeostatic maintenance, germinal center reactions, Ab production, class switching, and B cell memory formation were unaffected in Pex5-deficient animals. Similarly, T cell development and responses to viral infections also remained unaltered in the absence of Pex5 Thus, this study highlights the differential requirement of peroxisomes in distinct lymphocyte subtypes and may provide a rationale for specifically targeting peroxisomal metabolism in innate-like B cells in certain forms of B cell malignancies involving B1 cells.
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Affiliation(s)
- Jonathan Muri
- Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland; and
| | - Basak Corak
- Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland; and
| | - Mai Matsushita
- Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland; and
| | - Myriam Baes
- Lab of Cell Metabolism, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Manfred Kopf
- Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland; and
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29
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Hong H, Lee J, Park GY, Kim S, Park J, Park JS, Song Y, Lee S, Kim TJ, Lee YJ, Roh TY, Kwok SK, Kim SW, Tan Q, Lee Y. Postnatal regulation of B-1a cell development and survival by the CIC-PER2-BHLHE41 axis. Cell Rep 2022; 38:110386. [PMID: 35172136 DOI: 10.1016/j.celrep.2022.110386] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 11/23/2021] [Accepted: 01/24/2022] [Indexed: 02/07/2023] Open
Abstract
B-1 cell development mainly occurs via fetal and neonatal hematopoiesis and is suppressed in adult bone marrow hematopoiesis. However, little is known about the factors inhibiting B-1 cell development at the adult stage. We report that capicua (CIC) suppresses postnatal B-1a cell development and survival. CIC levels are high in B-1a cells and gradually increase in transitional B-1a (TrB-1a) cells with age. B-cell-specific Cic-null mice exhibit expansion of the B-1a cell population and a gradual increase in TrB-1a cell frequency with age but attenuated B-2 cell development. CIC deficiency enhances B cell receptor (BCR) signaling in transitional B cells and B-1a cell viability. Mechanistically, CIC-deficiency-mediated Per2 derepression upregulates Bhlhe41 levels by inhibiting CRY-mediated transcriptional repression for Bhlhe41, consequently promoting B-1a cell formation in Cic-null mice. Taken together, CIC is a key transcription factor that limits the B-1a cell population at the adult stage and balances B-1 versus B-2 cell formation.
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Affiliation(s)
- Hyebeen Hong
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Jongeun Lee
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Guk-Yeol Park
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Soeun Kim
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Jiho Park
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Jong Seok Park
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Youngkwon Song
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Sujin Lee
- Department of Immunology, Sungkyunkwan University School of Medicine, Suwon 16419, Republic of Korea
| | - Tae Jin Kim
- Department of Immunology, Sungkyunkwan University School of Medicine, Suwon 16419, Republic of Korea
| | - You Jeong Lee
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Tae-Young Roh
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Seung-Ki Kwok
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Sung Won Kim
- Department of Otolaryngology-Head and Neck Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Qiumin Tan
- Department of Cell Biology, University of Alberta, Edmonton, AB T6G 2H7, Canada
| | - Yoontae Lee
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea.
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30
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Kurz J, Weiss AC, Thiesler H, Qasrawi F, Deuper L, Kaur J, Rudat C, Lüdtke TH, Wojahn I, Hildebrandt H, Trowe MO, Kispert A. Notch signaling is a novel regulator of visceral smooth muscle cell differentiation in the murine ureter. Development 2022; 149:274136. [DOI: 10.1242/dev.199735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 12/31/2021] [Indexed: 01/13/2023]
Abstract
ABSTRACT
The contractile phenotype of smooth muscle cells (SMCs) is transcriptionally controlled by a complex of the DNA-binding protein SRF and the transcriptional co-activator MYOCD. The pathways that activate expression of Myocd and of SMC structural genes in mesenchymal progenitors are diverse, reflecting different intrinsic and extrinsic signaling inputs. Taking the ureter as a model, we analyzed whether Notch signaling, a pathway previously implicated in vascular SMC development, also affects visceral SMC differentiation. We show that mice with a conditional deletion of the unique Notch mediator RBPJ in the undifferentiated ureteric mesenchyme exhibit altered ureter peristalsis with a delayed onset, and decreased contraction frequency and intensity at fetal stages. They also develop hydroureter 2 weeks after birth. Notch signaling is required for precise temporal activation of Myocd expression and, independently, for expression of a group of late SMC structural genes. Based on additional expression analyses, we suggest that a mesenchymal JAG1-NOTCH2/NOTCH3 module regulates visceral SMC differentiation in the ureter in a biphasic and bimodal manner, and that its molecular function differs from that in the vascular system.
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Affiliation(s)
- Jennifer Kurz
- Institute of Molecular Biology, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Anna-Carina Weiss
- Institute of Molecular Biology, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Hauke Thiesler
- Institute of Clinical Biochemistry, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Fairouz Qasrawi
- Institute of Molecular Biology, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Lena Deuper
- Institute of Molecular Biology, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Jaskiran Kaur
- Institute of Molecular Biology, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Carsten Rudat
- Institute of Molecular Biology, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Timo H. Lüdtke
- Institute of Molecular Biology, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Irina Wojahn
- Institute of Molecular Biology, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Herbert Hildebrandt
- Institute of Clinical Biochemistry, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Mark-Oliver Trowe
- Institute of Molecular Biology, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Andreas Kispert
- Institute of Molecular Biology, Medizinische Hochschule Hannover, 30625 Hannover, Germany
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31
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Thomsen I, Kunowska N, de Souza R, Moody AM, Crawford G, Wang YF, Khadayate S, Whilding C, Strid J, Karimi MM, Barr AR, Dillon N, Sabbattini P. RUNX1 Regulates a Transcription Program That Affects the Dynamics of Cell Cycle Entry of Naive Resting B Cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2021; 207:2976-2991. [PMID: 34810221 PMCID: PMC8675107 DOI: 10.4049/jimmunol.2001367] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 09/28/2021] [Indexed: 11/19/2022]
Abstract
RUNX1 is a transcription factor that plays key roles in hematopoietic development and in hematopoiesis and lymphopoiesis. In this article, we report that RUNX1 regulates a gene expression program in naive mouse B cells that affects the dynamics of cell cycle entry in response to stimulation of the BCR. Conditional knockout of Runx1 in mouse resting B cells resulted in accelerated entry into S-phase after BCR engagement. Our results indicate that Runx1 regulates the cyclin D2 (Ccnd2) gene, the immediate early genes Fosl2, Atf3, and Egr2, and the Notch pathway gene Rbpj in mouse B cells, reducing the rate at which transcription of these genes increases after BCR stimulation. RUNX1 interacts with the chromatin remodeler SNF-2-related CREB-binding protein activator protein (SRCAP), recruiting it to promoter and enhancer regions of the Ccnd2 gene. BCR-mediated activation triggers switching between binding of RUNX1 and its paralog RUNX3 and between SRCAP and the switch/SNF remodeling complex member BRG1. Binding of BRG1 is increased at the Ccnd2 and Rbpj promoters in the Runx1 knockout cells after BCR stimulation. We also find that RUNX1 exerts positive or negative effects on a number of genes that affect the activation response of mouse resting B cells. These include Cd22 and Bank1, which act as negative regulators of the BCR, and the IFN receptor subunit gene Ifnar1 The hyperresponsiveness of the Runx1 knockout B cells to BCR stimulation and its role in regulating genes that are associated with immune regulation suggest that RUNX1 could be involved in regulating B cell tolerance.
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Affiliation(s)
- Inesa Thomsen
- Gene Regulation and Chromatin Group, MRC London Institute of Medical Sciences, London, United Kingdom
| | - Natalia Kunowska
- Gene Regulation and Chromatin Group, MRC London Institute of Medical Sciences, London, United Kingdom
| | - Roshni de Souza
- Gene Regulation and Chromatin Group, MRC London Institute of Medical Sciences, London, United Kingdom
| | - Anne-Marie Moody
- Gene Regulation and Chromatin Group, MRC London Institute of Medical Sciences, London, United Kingdom
| | - Greg Crawford
- Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
| | - Yi-Fang Wang
- Bioinformatics and Computing, MRC London Institute of Medical Sciences, London, United Kingdom
| | - Sanjay Khadayate
- Bioinformatics and Computing, MRC London Institute of Medical Sciences, London, United Kingdom
| | - Chad Whilding
- Microscopy Facility, MRC London Institute of Medical Sciences, London, United Kingdom
| | - Jessica Strid
- Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
| | - Mohammad M Karimi
- Bioinformatics and Computing, MRC London Institute of Medical Sciences, London, United Kingdom
- Comprehensive Cancer Centre, School of Cancer & Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Alexis R Barr
- Cell Cycle Control Group, MRC London Institute of Medical Sciences, London, United Kingdom; and
- Institute of Clinical Sciences, Imperial College London, London, United Kingdom
| | - Niall Dillon
- Gene Regulation and Chromatin Group, MRC London Institute of Medical Sciences, London, United Kingdom;
- Institute of Clinical Sciences, Imperial College London, London, United Kingdom
| | - Pierangela Sabbattini
- Gene Regulation and Chromatin Group, MRC London Institute of Medical Sciences, London, United Kingdom;
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32
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Parthasarathy R, Hägglöf T, Hadley JT, McLennan A, Mattke A, Dudley EA, Kumagai A, Dong LQ, Leadbetter EA. Receptor Interacting Protein Kinase Pathways Regulate Innate B Cell Developmental Checkpoints But Not Effector Function in Mice. Front Immunol 2021; 12:758407. [PMID: 34956189 PMCID: PMC8696004 DOI: 10.3389/fimmu.2021.758407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 11/22/2021] [Indexed: 11/13/2022] Open
Abstract
Mutations in the scaffolding domain of Receptor Interacting Protein kinases (RIP) underlie the recently described human autoimmune syndrome, CRIA, characterized by lymphadenopathy, splenomegaly, and autoantibody production. While disease mechanisms for CRIA remain undescribed, RIP kinases work together with caspase-8 to regulate cell death, which is critical for normal differentiation of many cell types. Here, we describe a key role for RIP1 in facilitating innate B cell differentiation and subsequent activation. By comparing RIP1, RIP3, and caspase-8 triple deficient and RIP3, caspase-8 double deficient mice, we identified selective contributions of RIP1 to an accumulation of murine splenic Marginal Zone (MZ) B cells and B1-b cells. We used mixed bone-marrow chimeras to determine that innate B cell commitment required B cell-intrinsic RIP1, RIP3, and caspase-8 sufficiency. RIP1 regulated MZ B cell development rather than differentiation and RIP1 mediates its innate immune effects independent of the RIP1 kinase domain. NP-KLH/alum and NP-Ficoll vaccination of mice doubly deficient in both caspase-8 and RIP3 or deficient in all three proteins (RIP3, caspase-8, and RIP1) revealed uniquely delayed T-dependent and T-independent IgG responses, abnormal splenic germinal center architecture, and reduced extrafollicular plasmablast formation compared to WT mice. Thus, RIP kinases and caspase-8 jointly orchestrate B cell fate and delayed effector function through a B cell-intrinsic mechanism.
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Affiliation(s)
- Raksha Parthasarathy
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Thomas Hägglöf
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Jason T. Hadley
- Department of Cell Systems and Anatomy, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Alexandra McLennan
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States
- Department of Engineering, St Mary’s University, San Antonio, TX, United States
| | - Aiden Mattke
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Elizabeth A. Dudley
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Abigail Kumagai
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Lily Q. Dong
- Department of Cell Systems and Anatomy, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Elizabeth A. Leadbetter
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States
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33
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Miyamoto M, Andersen P, Sulistio E, Liu X, Murphy S, Kannan S, Nam L, Miyamoto W, Tampakakis E, Hibino N, Uosaki H, Kwon C. Noncanonical Notch signals have opposing roles during cardiac development. Biochem Biophys Res Commun 2021; 577:12-16. [PMID: 34487959 PMCID: PMC8484041 DOI: 10.1016/j.bbrc.2021.08.094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 08/27/2021] [Accepted: 08/31/2021] [Indexed: 10/20/2022]
Abstract
The Notch pathway is an ancient intercellular signaling system with crucial roles in numerous cell-fate decision processes across species. While the canonical pathway is activated by ligand-induced cleavage and nuclear localization of membrane-bound Notch, Notch can also exert its activity in a ligand/transcription-independent fashion, which is conserved in Drosophila, Xenopus, and mammals. However, the noncanonical role remains poorly understood in in vivo processes. Here we show that increased levels of the Notch intracellular domain (NICD) in the early mesoderm inhibit heart development, potentially through impaired induction of the second heart field (SHF), independently of the transcriptional effector RBP-J. Similarly, inhibiting Notch cleavage, shown to increase noncanonical Notch activity, suppressed SHF induction in embryonic stem cell (ESC)-derived mesodermal cells. In contrast, NICD overexpression in late cardiac progenitor cells lacking RBP-J resulted in an increase in heart size. Our study suggests that noncanonical Notch signaling has stage-specific roles during cardiac development.
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Affiliation(s)
- Matthew Miyamoto
- Division of Cardiology, Department of Medicine, Johns Hopkins University Baltimore, MD,Heart and Vascular Institute, Cellular and Molecular Medicine, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD,Department of Biomedical Engineering, Department of Cell Biology, Johns Hopkins University Baltimore, MD
| | - Peter Andersen
- Division of Cardiology, Department of Medicine, Johns Hopkins University Baltimore, MD,Heart and Vascular Institute, Cellular and Molecular Medicine, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD,Department of Biomedical Engineering, Department of Cell Biology, Johns Hopkins University Baltimore, MD
| | - Edrick Sulistio
- Division of Cardiology, Department of Medicine, Johns Hopkins University Baltimore, MD,Heart and Vascular Institute, Cellular and Molecular Medicine, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD,Department of Biomedical Engineering, Department of Cell Biology, Johns Hopkins University Baltimore, MD
| | - Xihe Liu
- Division of Cardiology, Department of Medicine, Johns Hopkins University Baltimore, MD,Heart and Vascular Institute, Cellular and Molecular Medicine, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD,Department of Biomedical Engineering, Department of Cell Biology, Johns Hopkins University Baltimore, MD
| | - Sean Murphy
- Division of Cardiology, Department of Medicine, Johns Hopkins University Baltimore, MD,Heart and Vascular Institute, Cellular and Molecular Medicine, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD,Department of Biomedical Engineering, Department of Cell Biology, Johns Hopkins University Baltimore, MD
| | - Suraj Kannan
- Division of Cardiology, Department of Medicine, Johns Hopkins University Baltimore, MD,Heart and Vascular Institute, Cellular and Molecular Medicine, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD,Department of Biomedical Engineering, Department of Cell Biology, Johns Hopkins University Baltimore, MD
| | - Lucy Nam
- Division of Cardiology, Department of Medicine, Johns Hopkins University Baltimore, MD,Heart and Vascular Institute, Cellular and Molecular Medicine, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD,Department of Biomedical Engineering, Department of Cell Biology, Johns Hopkins University Baltimore, MD,Present address: Department of Surgery, Massachusetts General Hospital, Boston, MA
| | - William Miyamoto
- Division of Cardiology, Department of Medicine, Johns Hopkins University Baltimore, MD,Heart and Vascular Institute, Cellular and Molecular Medicine, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD,Department of Biomedical Engineering, Department of Cell Biology, Johns Hopkins University Baltimore, MD
| | - Emmanouil Tampakakis
- Division of Cardiology, Department of Medicine, Johns Hopkins University Baltimore, MD,Heart and Vascular Institute, Cellular and Molecular Medicine, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Narutoshi Hibino
- Department of Surgery, The University of Chicago Medical Center, Chicago, IL
| | - Hideki Uosaki
- Division of Regenerative Medicine, Center for Molecular Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Chulan Kwon
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA; Heart and Vascular Institute, Cellular and Molecular Medicine, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Biomedical Engineering, Department of Cell Biology, Johns Hopkins University, Baltimore, MD, USA.
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34
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Sakamoto K, Jin SP, Goel S, Jo JH, Voisin B, Kim D, Nadella V, Liang H, Kobayashi T, Huang X, Deming C, Horiuchi K, Segre JA, Kong HH, Nagao K. Disruption of the endopeptidase ADAM10-Notch signaling axis leads to skin dysbiosis and innate lymphoid cell-mediated hair follicle destruction. Immunity 2021; 54:2321-2337.e10. [PMID: 34582748 DOI: 10.1016/j.immuni.2021.09.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 06/02/2021] [Accepted: 08/31/2021] [Indexed: 12/16/2022]
Abstract
Hair follicles (HFs) function as hubs for stem cells, immune cells, and commensal microbes, which must be tightly regulated during homeostasis and transient inflammation. Here we found that transmembrane endopeptidase ADAM10 expression in upper HFs was crucial for regulating the skin microbiota and protecting HFs and their stem cell niche from inflammatory destruction. Ablation of the ADAM10-Notch signaling axis impaired the innate epithelial barrier and enabled Corynebacterium species to predominate the microbiome. Dysbiosis triggered group 2 innate lymphoid cell-mediated inflammation in an interleukin-7 (IL-7) receptor-, S1P receptor 1-, and CCR6-dependent manner, leading to pyroptotic cell death of HFs and irreversible alopecia. Double-stranded RNA-induced ablation models indicated that the ADAM10-Notch signaling axis bolsters epithelial innate immunity by promoting β-defensin-6 expression downstream of type I interferon responses. Thus, ADAM10-Notch signaling axis-mediated regulation of host-microbial symbiosis crucially protects HFs from inflammatory destruction, which has implications for strategies to sustain tissue integrity during chronic inflammation.
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Affiliation(s)
- Keiko Sakamoto
- Cutaneous Leukocyte Biology Section, Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Seon-Pil Jin
- Cutaneous Leukocyte Biology Section, Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Shubham Goel
- Cutaneous Leukocyte Biology Section, Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jay-Hyun Jo
- Cutaneous Microbiome and Inflammation Section, Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Benjamin Voisin
- Cutaneous Leukocyte Biology Section, Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Doyoung Kim
- Cutaneous Leukocyte Biology Section, Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Vinod Nadella
- Cutaneous Leukocyte Biology Section, Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Hai Liang
- Cutaneous Microbiome and Inflammation Section, Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Tetsuro Kobayashi
- Cutaneous Leukocyte Biology Section, Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Xin Huang
- Microbial Genomics Section, Translational and Functional Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Clay Deming
- Microbial Genomics Section, Translational and Functional Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Keisuke Horiuchi
- Department of Orthopedic Surgery, National Defense Medical College, Saitama 359-8513, Japan
| | - Julia A Segre
- Microbial Genomics Section, Translational and Functional Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Heidi H Kong
- Cutaneous Microbiome and Inflammation Section, Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Keisuke Nagao
- Cutaneous Leukocyte Biology Section, Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
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35
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Kibler A, Budeus B, Homp E, Bronischewski K, Berg V, Sellmann L, Murke F, Heinold A, Heinemann FM, Lindemann M, Bekeredjian-Ding I, Horn PA, Kirschning CJ, Küppers R, Seifert M. Systematic memory B cell archiving and random display shape the human splenic marginal zone throughout life. J Exp Med 2021; 218:211756. [PMID: 33538775 PMCID: PMC7868796 DOI: 10.1084/jem.20201952] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/02/2020] [Accepted: 12/21/2020] [Indexed: 12/19/2022] Open
Abstract
Human memory B cells (MBCs) are generated and diversified in secondary lymphoid tissues throughout the organism. A paired immunoglobulin (Ig)-gene repertoire analysis of peripheral blood (PB) and splenic MBCs from infant, adult, and elderly humans revealed that throughout life, circulating MBCs are comprehensively archived in the spleen. Archive MBC clones are systematically preserved and uncoupled from class-switching. Clonality in the spleen increases steadily, but boosts at midlife, thereby outcompeting small clones. The splenic marginal zone (sMZ) represents a primed MBC compartment, generated from a stochastic exchange within the archive memory pool. This is supported by functional assays, showing that PB and splenic CD21+ MBCs acquire transient CD21high expression upon NOTCH2-stimulation. Our study provides insight that the human MBC system in PB and spleen is composed of three interwoven compartments: the dynamic relationship of circulating, archive, and its subset of primed (sMZ) memory changes with age, thereby contributing to immune aging.
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Affiliation(s)
- Artur Kibler
- Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany
| | - Bettina Budeus
- Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany
| | - Ekaterina Homp
- Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany
| | - Kevin Bronischewski
- Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany
| | - Victoria Berg
- Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany
| | - Ludger Sellmann
- Department of Haematology, University Hospital Essen, Essen, Germany
| | - Florian Murke
- Institute for Transfusion Medicine, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Andreas Heinold
- Institute for Transfusion Medicine, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Falko M Heinemann
- Institute for Transfusion Medicine, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Monika Lindemann
- Institute for Transfusion Medicine, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | | | - Peter A Horn
- Institute for Transfusion Medicine, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | | | - Ralf Küppers
- Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany
| | - Marc Seifert
- Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany
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36
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de Mol J, Kuiper J, Tsiantoulas D, Foks AC. The Dynamics of B Cell Aging in Health and Disease. Front Immunol 2021; 12:733566. [PMID: 34675924 PMCID: PMC8524000 DOI: 10.3389/fimmu.2021.733566] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 09/16/2021] [Indexed: 12/30/2022] Open
Abstract
Aging is considered to be an important risk factor for several inflammatory diseases. B cells play a major role in chronic inflammatory diseases by antibody secretion, antigen presentation and T cell regulation. Different B cell subsets have been implicated in infections and multiple autoimmune diseases. Since aging decreases B cell numbers, affects B cell subsets and impairs antibody responses, the aged B cell is expected to have major impacts on the development and progression of these diseases. In this review, we summarize the role of B cells in health and disease settings, such as atherosclerotic disease. Furthermore, we provide an overview of age-related changes in B cell development and function with respect to their impact in chronic inflammatory diseases.
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Affiliation(s)
- Jill de Mol
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, Netherlands
| | - Johan Kuiper
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, Netherlands
| | | | - Amanda C. Foks
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, Netherlands
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37
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Magistri M, Happ LE, Ramdial J, Lu X, Stathias V, Kunkalla K, Agarwal N, Jiang X, Schürer SC, Dubovy SR, Chapman JR, Vega F, Dave S, Lossos IS. The Genetic Landscape of Ocular Adnexa MALT Lymphoma Reveals Frequent Aberrations in NFAT and MEF2B Signaling Pathways. CANCER RESEARCH COMMUNICATIONS 2021; 1:1-16. [PMID: 35528192 PMCID: PMC9075502 DOI: 10.1158/2767-9764.crc-21-0022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/03/2021] [Indexed: 12/31/2022]
Abstract
A comprehensive constellation of somatic non-silent mutations and copy number (CN) variations in ocular adnexa marginal zone lymphoma (OAMZL) is unknown. By utilizing whole-exome sequencing in 69 tumors we define the genetic landscape of OAMZL. Mutations and CN changes in CABIN1 (30%), RHOA (26%), TBL1XR1 (22%), and CREBBP (17%) and inactivation of TNFAIP3 (26%) were among the most common aberrations. Candidate cancer driver genes cluster in the B-cell receptor (BCR), NFkB, NOTCH and NFAT signaling pathways. One of the most commonly altered genes is CABIN1, a calcineurin inhibitor acting as a negative regulator of the NFAT and MEF2B transcriptional activity. CABIN1 deletions enhance BCR-stimulated NFAT and MEF2B transcriptional activity, while CABIN1 mutations enhance only MEF2B transcriptional activity by impairing binding of mSin3a to CABIN1. Our data provide an unbiased identification of genetically altered genes that may play a role in the molecular pathogenesis of OAMZL and serve as therapeutic targets.
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Affiliation(s)
- Marco Magistri
- Division of Hematology, Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida
| | - Lanie E. Happ
- Center for Genomic and Computational Biology and Department of Medicine, Duke University, Durham, North Carolina
| | - Jeremy Ramdial
- Division of Hematology, Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida
| | - XiaoQing Lu
- Division of Hematology, Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida
| | - Vasileios Stathias
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, Florida
- Center for Computational Science, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida
| | - Kranthi Kunkalla
- Division of Hematopathology, Department of Pathology and Laboratory Medicine, University of Miami, Miami, Florida
| | - Nitin Agarwal
- Division of Hematopathology, Department of Pathology and Laboratory Medicine, University of Miami, Miami, Florida
| | - Xiaoyu Jiang
- Division of Hematology, Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida
| | - Stephan C. Schürer
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, Florida
- Center for Computational Science, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida
| | - Sander R. Dubovy
- Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida
| | - Jennifer R. Chapman
- Division of Hematopathology, Department of Pathology and Laboratory Medicine, University of Miami, Miami, Florida
| | - Francisco Vega
- Division of Hematopathology, Department of Pathology and Laboratory Medicine, University of Miami, Miami, Florida
| | - Sandeep Dave
- Center for Genomic and Computational Biology and Department of Medicine, Duke University, Durham, North Carolina
| | - Izidore S. Lossos
- Division of Hematology, Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, Florida
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Alderuccio JP, Lossos IS. NOTCH signaling in the pathogenesis of splenic marginal zone lymphoma-opportunities for therapy. Leuk Lymphoma 2021; 63:279-290. [PMID: 34586000 DOI: 10.1080/10428194.2021.1984452] [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: 10/20/2022]
Abstract
NOTCH signaling is a highly conserved pathway mediated by four receptors (NOTCH 1-4) playing critical functions in proliferation, differentiation, and cell death. Under physiologic circumstances, NOTCH2 is a key regulator in marginal zone differentiation and development. Over the last decade, growing data demonstrated frequent NOTCH2 mutations in splenic marginal zone lymphoma (SMZL) underscoring its critical role in the pathogenesis of this disease. Moreover, NOTCH2 specificity across studies supports the rationale to assess its value as a diagnosis biomarker in a disease without pathognomonic features. These data make NOTCH signaling an appealing target for drug discovery in SMZL; however, prior efforts attempting to manipulate this pathway failed to demonstrate meaningful clinical benefit, or their safety profile prevented further development. In this review, we discuss the current knowledge of NOTCH implications in the pathogenesis and as a potential druggable target in SMZL.
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Affiliation(s)
- Juan Pablo Alderuccio
- Division of Hematology, Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Izidore S Lossos
- Division of Hematology, Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, USA.,Department of Molecular and Cellular Pharmacology, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, USA
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Astrocyte-derived neurons provide excitatory input to the adult striatal circuitry. Proc Natl Acad Sci U S A 2021; 118:2104119118. [PMID: 34389674 DOI: 10.1073/pnas.2104119118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Astrocytes have emerged as a potential source for new neurons in the adult mammalian brain. In mice, adult striatal neurogenesis can be stimulated by local damage, which recruits striatal astrocytes into a neurogenic program by suppression of active Notch signaling (J. P. Magnusson et al., Science 346, 237-241 [2014]). Here, we induced adult striatal neurogenesis in the intact mouse brain by the inhibition of Notch signaling in astrocytes. We show that most striatal astrocyte-derived neurons are confined to the anterior medial striatum, do not express established striatal neuronal markers, and exhibit dendritic spines, which are atypical for striatal interneurons. In contrast to striatal neurons generated during development, which are GABAergic or cholinergic, most adult astrocyte-derived striatal neurons possess distinct electrophysiological properties, constituting the only glutamatergic striatal population. Astrocyte-derived neurons integrate into the adult striatal microcircuitry, both receiving and providing synaptic input. The glutamatergic nature of these neurons has the potential to provide excitatory input to the striatal circuitry and may represent an efficient strategy to compensate for reduced neuronal activity caused by aging or lesion-induced neuronal loss.
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Sottoriva K, Pajcini KV. Notch Signaling in the Bone Marrow Lymphopoietic Niche. Front Immunol 2021; 12:723055. [PMID: 34394130 PMCID: PMC8355626 DOI: 10.3389/fimmu.2021.723055] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 07/14/2021] [Indexed: 12/12/2022] Open
Abstract
Lifelong mammalian hematopoiesis requires continuous generation of mature blood cells that originate from Hematopoietic Stem and Progenitor Cells (HSPCs) situated in the post-natal Bone Marrow (BM). The BM microenvironment is inherently complex and extensive studies have been devoted to identifying the niche that maintains HSPC homeostasis and supports hematopoietic potential. The Notch signaling pathway is required for the emergence of the definitive Hematopoietic Stem Cell (HSC) during embryonic development, but its role in BM HSC homeostasis is convoluted. Recent work has begun to explore novel roles for the Notch signaling pathway in downstream progenitor populations. In this review, we will focus an important role for Notch signaling in the establishment of a T cell primed sub-population of Common Lymphoid Progenitors (CLPs). Given that its activation mechanism relies primarily on cell-to-cell contact, Notch signaling is an ideal means to investigate and define a novel BM lymphopoietic niche. We will discuss how new genetic model systems indicate a pre-thymic, BM-specific role for Notch activation in early T cell development and what this means to the paradigm of lymphoid lineage commitment. Lastly, we will examine how leukemic T-cell acute lymphoblastic leukemia (T-ALL) blasts take advantage of Notch and downstream lymphoid signals in the pathological BM niche.
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Affiliation(s)
- Kilian Sottoriva
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago College of Medicine, Chicago, IL, United States
| | - Kostandin V Pajcini
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago College of Medicine, Chicago, IL, United States
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41
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Wei H, Yang W, Hong H, Yan Z, Qin H, Benveniste EN. Protein Kinase CK2 Regulates B Cell Development and Differentiation. THE JOURNAL OF IMMUNOLOGY 2021; 207:799-808. [PMID: 34301844 DOI: 10.4049/jimmunol.2100059] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 05/27/2021] [Indexed: 12/27/2022]
Abstract
Protein kinase CK2 (also known as Casein Kinase 2) is a serine/threonine kinase composed of two catalytic subunits (CK2α and/or CK2α') and two regulatory CK2β subunits. CK2 is overexpressed and overactive in B cell acute lymphoblastic leukemia and diffuse large B cell lymphomas, leading to inappropriate activation of the NF-κB, JAK/STAT, and PI3K/AKT/mTOR signaling pathways and tumor growth. However, whether CK2 regulates normal B cell development and differentiation is not known. We generated mice lacking CK2α specifically in B cells (using CD19-driven Cre recombinase). These mice exhibited cell-intrinsic expansion of marginal zone B cells at the expense of transitional B cells, without changes in follicular B cells. Transitional B cells required CK2α to maintain adequate BCR signaling. In the absence of CK2α, reduced BCR signaling and elevated Notch2 signaling activation increased marginal zone B cell differentiation. Our results identify a previously unrecognized function for CK2α in B cell development and differentiation.
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Affiliation(s)
- Hairong Wei
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294; and
| | - Wei Yang
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294; and
| | - Huixian Hong
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294; and
| | - Zhaoqi Yan
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294; and.,Gladstone Institute of Neurological Disease, San Francisco, CA 94158
| | - Hongwei Qin
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294; and
| | - Etty N Benveniste
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294; and
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Kiyokawa H, Yamaoka A, Matsuoka C, Tokuhara T, Abe T, Morimoto M. Airway basal stem cells reutilize the embryonic proliferation regulator, Tgfβ-Id2 axis, for tissue regeneration. Dev Cell 2021; 56:1917-1929.e9. [PMID: 34129836 DOI: 10.1016/j.devcel.2021.05.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 03/28/2021] [Accepted: 05/19/2021] [Indexed: 12/15/2022]
Abstract
During development, quiescent airway basal stem cells are derived from proliferative primordial progenitors through the cell-cycle slowdown. In contrast, basal cells contribute to adult tissue regeneration by shifting from slow cycling to proliferating and subsequently back to slow cycling. Although sustained proliferation results in tumorigenesis, the molecular mechanisms regulating these transitions remain unknown. Using temporal single-cell transcriptomics of developing murine airway progenitors and genetic validation experiments, we found that TGF-β signaling decelerated cell cycle by inhibiting Id2 and contributed to slow-cycling basal cell specification during development. In adult tissue regeneration, reduced TGF-β signaling restored Id2 expression and initiated regeneration. Id2 overexpression and Tgfbr2 knockout enhanced epithelial proliferation; however, persistent Id2 expression drove basal cell hyperplasia that resembled a precancerous state. Together, the TGF-β-Id2 axis commonly regulates the proliferation transitions in basal cells during development and regeneration, and its fine-tuning is critical for normal regeneration while avoiding basal cell hyperplasia.
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Affiliation(s)
- Hirofumi Kiyokawa
- Laboratory for Lung Development and Regeneration, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
| | - Akira Yamaoka
- Laboratory for Lung Development and Regeneration, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
| | - Chisa Matsuoka
- Laboratory for Lung Development and Regeneration, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
| | - Tomoko Tokuhara
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
| | - Takaya Abe
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
| | - Mitsuru Morimoto
- Laboratory for Lung Development and Regeneration, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan.
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43
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Ng HL, Quail E, Cruickshank MN, Ulgiati D. To Be, or Notch to Be: Mediating Cell Fate from Embryogenesis to Lymphopoiesis. Biomolecules 2021; 11:biom11060849. [PMID: 34200313 PMCID: PMC8227657 DOI: 10.3390/biom11060849] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 05/29/2021] [Accepted: 06/04/2021] [Indexed: 12/11/2022] Open
Abstract
Notch signaling forms an evolutionarily conserved juxtacrine pathway crucial for cellular development. Initially identified in Drosophila wing morphogenesis, Notch signaling has since been demonstrated to play pivotal roles in governing mammalian cellular development in a large variety of cell types. Indeed, abolishing Notch constituents in mouse models result in embryonic lethality, demonstrating that Notch signaling is critical for development and differentiation. In this review, we focus on the crucial role of Notch signaling in governing embryogenesis and differentiation of multiple progenitor cell types. Using hematopoiesis as a diverse cellular model, we highlight the role of Notch in regulating the cell fate of common lymphoid progenitors. Additionally, the influence of Notch through microenvironment interplay with lymphoid cells and how dysregulation influences disease processes is explored. Furthermore, bi-directional and lateral Notch signaling between ligand expressing source cells and target cells are investigated, indicating potentially novel therapeutic options for treatment of Notch-mediated diseases. Finally, we discuss the role of cis-inhibition in regulating Notch signaling in mammalian development.
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Affiliation(s)
- Han Leng Ng
- Centre for Haematology, Department of Immunology and Inflammation, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK;
- School of Biomedical Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia; (E.Q.); (M.N.C.)
| | - Elizabeth Quail
- School of Biomedical Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia; (E.Q.); (M.N.C.)
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Mark N. Cruickshank
- School of Biomedical Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia; (E.Q.); (M.N.C.)
| | - Daniela Ulgiati
- School of Biomedical Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia; (E.Q.); (M.N.C.)
- Correspondence: ; Tel.: +61-8-6457-1076
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44
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Notch signaling promotes disease initiation and progression in murine chronic lymphocytic leukemia. Blood 2021; 137:3079-3092. [PMID: 33512383 DOI: 10.1182/blood.2020006701] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 12/04/2020] [Indexed: 01/08/2023] Open
Abstract
NOTCH1 gain-of-function mutations are recurrent in B-cell chronic lymphocytic leukemia (B-CLL), where they are associated with accelerated disease progression and refractoriness to chemotherapy. The specific role of NOTCH1 in the development and progression of this malignancy is unclear. Here, we assess the impact of loss of Notch signaling and pathway hyperactivation in an in vivo mouse model of CLL (IgH.TEμ) that faithfully replicates many features of the human pathology. Ablation of canonical Notch signaling using conditional gene inactivation of RBP-J in immature hematopoietic or B-cell progenitors delayed CLL induction and reduced incidence of mice developing disease. In contrast, forced expression of a dominant active form of Notch resulted in more animals developing CLL with early disease onset. Comparative analysis of gene expression and epigenetic features of Notch gain-of-function and control CLL cells revealed direct and indirect regulation of cell cycle-associated genes, which led to increased proliferation of Notch gain-of-function CLL cells in vivo. These results demonstrate that Notch signaling facilitates disease initiation and promotes CLL cell proliferation and disease progression.
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Allen F, Maillard I. Therapeutic Targeting of Notch Signaling: From Cancer to Inflammatory Disorders. Front Cell Dev Biol 2021; 9:649205. [PMID: 34124039 PMCID: PMC8194077 DOI: 10.3389/fcell.2021.649205] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 04/26/2021] [Indexed: 12/20/2022] Open
Abstract
Over the past two decades, the Notch signaling pathway has been investigated as a therapeutic target for the treatment of cancers, and more recently in the context of immune and inflammatory disorders. Notch is an evolutionary conserved pathway found in all metazoans that is critical for proper embryonic development and for the postnatal maintenance of selected tissues. Through cell-to-cell contacts, Notch orchestrates cell fate decisions and differentiation in non-hematopoietic and hematopoietic cell types, regulates immune cell development, and is integral to shaping the amplitude as well as the quality of different types of immune responses. Depriving some cancer types of Notch signals has been shown in preclinical studies to stunt tumor growth, consistent with an oncogenic function of Notch signaling. In addition, therapeutically antagonizing Notch signals showed preclinical potential to prevent or reverse inflammatory disorders, including autoimmune diseases, allergic inflammation and immune complications of life-saving procedures such allogeneic bone marrow and solid organ transplantation (graft-versus-host disease and graft rejection). In this review, we discuss some of these unique approaches, along with the successes and challenges encountered so far to target Notch signaling in preclinical and early clinical studies. Our goal is to emphasize lessons learned to provide guidance about emerging strategies of Notch-based therapeutics that could be deployed safely and efficiently in patients with immune and inflammatory disorders.
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Affiliation(s)
- Frederick Allen
- Division of Hematology and Oncology, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States
- Abramson Family Cancer Research Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States
| | - Ivan Maillard
- Division of Hematology and Oncology, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States
- Abramson Family Cancer Research Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States
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Lee CL, Brock KD, Hasapis S, Zhang D, Sibley AB, Qin X, Gresham JS, Caraballo I, Luo L, Daniel AR, Hilton MJ, Owzar K, Kirsch DG. Whole-Exome Sequencing of Radiation-Induced Thymic Lymphoma in Mouse Models Identifies Notch1 Activation as a Driver of p53 Wild-Type Lymphoma. Cancer Res 2021; 81:3777-3790. [PMID: 34035082 DOI: 10.1158/0008-5472.can-20-2823] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 04/05/2021] [Accepted: 05/10/2021] [Indexed: 12/16/2022]
Abstract
Mouse models of radiation-induced thymic lymphoma are widely used to study the development of radiation-induced blood cancers and to gain insights into the biology of human T-cell lymphoblastic leukemia/lymphoma. Here we aimed to identify key oncogenic drivers for the development of radiation-induced thymic lymphoma by performing whole-exome sequencing using tumors and paired normal tissues from mice with and without irradiation. Thymic lymphomas from irradiated wild-type (WT), p53+/-, and KrasLA1 mice were not observed to harbor significantly higher numbers of nonsynonymous somatic mutations compared with thymic lymphomas from unirradiated p53-/- mice. However, distinct patterns of recurrent mutations arose in genes that control the Notch1 signaling pathway based on the mutational status of p53. Preferential activation of Notch1 signaling in p53 WT lymphomas was also observed at the RNA and protein level. Reporter mice for activation of Notch1 signaling revealed that total-body irradiation (TBI) enriched Notch1hi CD44+ thymocytes that could propagate in vivo after thymocyte transplantation. Mechanistically, genetic inhibition of Notch1 signaling in immature thymocytes prevented formation of radiation-induced thymic lymphoma in p53 WT mice. Taken together, these results demonstrate a critical role of activated Notch1 signaling in driving multistep carcinogenesis of thymic lymphoma following TBI in p53 WT mice. SIGNIFICANCE: These findings reveal the mutational landscape and key drivers in murine radiation-induced thymic lymphoma, a classic animal model that has been used to study radiation carcinogenesis for over 70 years.
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Affiliation(s)
- Chang-Lung Lee
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina.
- Department of Pathology, Duke University Medical Center, Durham, North Carolina
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
| | - Kennedy D Brock
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - Stephanie Hasapis
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - Dadong Zhang
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
| | - Alexander B Sibley
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
| | - Xiaodi Qin
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
| | - Jeremy S Gresham
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
| | - Isibel Caraballo
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - Lixia Luo
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - Andrea R Daniel
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - Matthew J Hilton
- Department of Orthopedic Surgery, Duke University Medical Center, Durham, North Carolina
| | - Kouros Owzar
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
- Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, North Carolina
| | - David G Kirsch
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina.
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina
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Lo LW, Chang CW, Chiang MF, Lin IY, Lin KI. Marginal Zone B Cells Assist With Neutrophil Accumulation to Fight Against Systemic Staphylococcus aureus Infection. Front Immunol 2021; 12:636818. [PMID: 34040603 PMCID: PMC8141640 DOI: 10.3389/fimmu.2021.636818] [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: 12/02/2020] [Accepted: 04/13/2021] [Indexed: 12/15/2022] Open
Abstract
In addition to regulating immune responses by producing antibodies that confer humoral immunity, B cells can also affect these responses by producing cytokines. How B cells participate in the clearance of pathogenic infections via functions other than the production of pathogen-specific antibodies is still largely unknown. Marginal zone (MZ) B cells can quickly respond to bacterial invasion by providing the initial round of antibodies. After a bloodborne bacterial infection, neutrophils promptly migrate to the MZ. However, the mechanisms regulating neutrophil accumulation in the MZ during the initial phase of infection also remain obscure. Here, we found that MZ B cell-deficient mice are more susceptible to systemic Staphylococcus aureus (S. aureus) infection compared with wildtype mice. The expression levels of interleukin (IL)-6 and CXCL1/CXCL2 in MZ B cells increased significantly in mice at 3–4 h after infection with S. aureus, then decreased at 24 h post-infection. After systemic S. aureus infection, splenic neutrophils express increased CXCR2 levels. Our results from confocal microscopy imaging of thick-section staining demonstrate that neutrophils in wildtype mice form cell clusters and are in close contact with MZ B cells at 3 h post-infection. This neutrophil cluster formation shortly after infection was diminished in both MZ B cell-deficient mice and IL-6-deficient mice. Blocking the action of CXCL1/CXCL2 by injecting anti-CXCL1 and anti-CXCL2 antibodies 1 h before S. aureus infection significantly suppressed the recruitment of neutrophils to the MZ at 3 h post-infection. Compared with peptidoglycan stimulation alone, peptidoglycan stimulation with neutrophil co-culture further enhanced MZ B-cell activation and differentiation. Using a Förster resonance energy transfer by fluorescence lifetime imaging (FLIM-FRET) analysis, we observed evidence of a direct interaction between neutrophils and MZ B cells after peptidoglycan stimulation. Furthermore, neutrophil depletion in mice resulted in a reduced production of S. aureus-specific immunoglobulin (Ig)M at 24 h post-infection. Together, our results demonstrate that MZ B cells regulate the rapid neutrophil swarming into the spleen during the early phase of systemic S. aureus infection. Interaction with neutrophils assists MZ B cells with their differentiation into IgM-secreting cells and contributes to the clearance of systemic bacterial infections.
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Affiliation(s)
- Li-Wen Lo
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan.,Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Chia-Wei Chang
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | | | - I-Ying Lin
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Kuo-I Lin
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan.,Genomics Research Center, Academia Sinica, Taipei, Taiwan
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Krishnan M, Kumar S, Kangale LJ, Ghigo E, Abnave P. The Act of Controlling Adult Stem Cell Dynamics: Insights from Animal Models. Biomolecules 2021; 11:biom11050667. [PMID: 33946143 PMCID: PMC8144950 DOI: 10.3390/biom11050667] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/02/2021] [Accepted: 04/09/2021] [Indexed: 12/12/2022] Open
Abstract
Adult stem cells (ASCs) are the undifferentiated cells that possess self-renewal and differentiation abilities. They are present in all major organ systems of the body and are uniquely reserved there during development for tissue maintenance during homeostasis, injury, and infection. They do so by promptly modulating the dynamics of proliferation, differentiation, survival, and migration. Any imbalance in these processes may result in regeneration failure or developing cancer. Hence, the dynamics of these various behaviors of ASCs need to always be precisely controlled. Several genetic and epigenetic factors have been demonstrated to be involved in tightly regulating the proliferation, differentiation, and self-renewal of ASCs. Understanding these mechanisms is of great importance, given the role of stem cells in regenerative medicine. Investigations on various animal models have played a significant part in enriching our knowledge and giving In Vivo in-sight into such ASCs regulatory mechanisms. In this review, we have discussed the recent In Vivo studies demonstrating the role of various genetic factors in regulating dynamics of different ASCs viz. intestinal stem cells (ISCs), neural stem cells (NSCs), hematopoietic stem cells (HSCs), and epidermal stem cells (Ep-SCs).
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Affiliation(s)
- Meera Krishnan
- Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Gurgaon-Faridabad Ex-pressway, Faridabad 121001, India; (M.K.); (S.K.)
| | - Sahil Kumar
- Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Gurgaon-Faridabad Ex-pressway, Faridabad 121001, India; (M.K.); (S.K.)
| | - Luis Johnson Kangale
- IRD, AP-HM, SSA, VITROME, Aix-Marseille University, 13385 Marseille, France;
- Institut Hospitalo Universitaire Méditerranée Infection, 13385 Marseille, France;
| | - Eric Ghigo
- Institut Hospitalo Universitaire Méditerranée Infection, 13385 Marseille, France;
- TechnoJouvence, 13385 Marseille, France
| | - Prasad Abnave
- Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Gurgaon-Faridabad Ex-pressway, Faridabad 121001, India; (M.K.); (S.K.)
- Correspondence:
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Palm AKE, Kleinau S. Marginal zone B cells: From housekeeping function to autoimmunity? J Autoimmun 2021; 119:102627. [PMID: 33640662 DOI: 10.1016/j.jaut.2021.102627] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/16/2021] [Accepted: 02/16/2021] [Indexed: 12/13/2022]
Abstract
Marginal zone (MZ) B cells comprise a subset of innate-like B cells found predominantly in the spleen, but also in lymph nodes and blood. Their principal functions are participation in quick responses to blood-borne pathogens and secretion of natural antibodies. The latter is important for housekeeping functions such as clearance of apoptotic cell debris. MZ B cells have B cell receptors with low poly-/self-reactivity, but they are not pathogenic at steady state. However, if simultaneously stimulated with self-antigen and pathogen- and/or damage-associated molecular patterns (PAMPs/DAMPs), MZ B cells may participate in the initial steps towards breakage of immunological tolerance. This review summarizes what is known about the role of MZ B cells in autoimmunity, both in mouse models and human disease. We cover factors important for shaping the MZ B cell compartment, how the functional properties of MZ B cells may contribute to breaking tolerance, and how MZ B cells are being regulated.
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Affiliation(s)
- Anna-Karin E Palm
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden.
| | - Sandra Kleinau
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, Sweden.
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Garis M, Garrett-Sinha LA. Notch Signaling in B Cell Immune Responses. Front Immunol 2021; 11:609324. [PMID: 33613531 PMCID: PMC7892449 DOI: 10.3389/fimmu.2020.609324] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 12/23/2020] [Indexed: 12/22/2022] Open
Abstract
The Notch signaling pathway is highly evolutionarily conserved, dictating cell fate decisions and influencing the survival and growth of progenitor cells that give rise to the cells of the immune system. The roles of Notch signaling in hematopoietic stem cell maintenance and in specification of T lineage cells have been well-described. Notch signaling also plays important roles in B cells. In particular, it is required for specification of marginal zone type B cells, but Notch signaling is also important in other stages of B cell development and activation. This review will focus on established and new roles of Notch signaling during B lymphocyte lineage commitment and describe the function of Notch within mature B cells involved in immune responses.
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Affiliation(s)
- Matthew Garis
- Department of Biochemistry, State University of New York at Buffalo, Buffalo, NY, United States
| | - Lee Ann Garrett-Sinha
- Department of Biochemistry, State University of New York at Buffalo, Buffalo, NY, United States
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