1
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Araujo AM, Dekker JD, Garrison K, Su Z, Rhee C, Hu Z, Lee BK, Osorio D, Lee J, Iyer VR, Ehrlich LIR, Georgiou G, Ippolito G, Yi S, Tucker HO. Lymphoid origin of intrinsically activated plasmacytoid dendritic cells in mice. eLife 2024; 13:RP96394. [PMID: 39269281 PMCID: PMC11398865 DOI: 10.7554/elife.96394] [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: 09/15/2024] Open
Abstract
We identified a novel mouse plasmacytoid dendritic cell (pDC) lineage derived from the common lymphoid progenitors (CLPs) that is dependent on expression of Bcl11a. These CLP-derived pDCs, which we refer to as 'B-pDCs', have a unique gene expression profile that includes hallmark B cell genes, normally not expressed in conventional pDCs. Despite expressing most classical pDC markers such as SIGLEC-H and PDCA1, B-pDCs lack IFN-α secretion, exhibiting a distinct inflammatory profile. Functionally, B-pDCs induce T cell proliferation more robustly than canonical pDCs following Toll-like receptor 9 (TLR9) engagement. B-pDCs, along with another homogeneous subpopulation of myeloid-derived pDCs, display elevated levels of the cell surface receptor tyrosine kinase AXL, mirroring human AXL+ transitional DCs in function and transcriptional profile. Murine B-pDCs therefore represent a phenotypically and functionally distinct CLP-derived DC lineage specialized in T cell activation and previously not described in mice.
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Affiliation(s)
| | - Joseph D Dekker
- Department of Chemical Engineering, The University of Texas at Austin, Austin, United States
| | - Kendra Garrison
- Department of Chemical Engineering, The University of Texas at Austin, Austin, United States
| | - Zhe Su
- Department of Biomedical Engineering, and Livestrong Cancer Institutes, The University of Texas at Austin, Austin, United States
| | - Catherine Rhee
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, United States
| | - Zicheng Hu
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, United States
| | - Bum-Kyu Lee
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, United States
| | - Daniel Osorio
- Department of Biomedical Engineering, and Livestrong Cancer Institutes, The University of Texas at Austin, Austin, United States
| | - Jiwon Lee
- Department of Chemical Engineering, The University of Texas at Austin, Austin, United States
| | - Vishwanath R Iyer
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, United States
| | - Lauren I R Ehrlich
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, United States
| | - George Georgiou
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, United States
| | - Gregory Ippolito
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, United States
| | - Stephen Yi
- Department of Biomedical Engineering, and Livestrong Cancer Institutes, The University of Texas at Austin, Austin, United States
| | - Haley O Tucker
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, United States
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2
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Shen X, Li X, Wu T, Guo T, Lv J, He Z, Luo M, Zhu X, Tian Y, Lai W, Dong C, Hu X, Wu L. TRIM33 plays a critical role in regulating dendritic cell differentiation and homeostasis by modulating Irf8 and Bcl2l11 transcription. Cell Mol Immunol 2024; 21:752-769. [PMID: 38822080 PMCID: PMC11214632 DOI: 10.1038/s41423-024-01179-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 04/25/2024] [Indexed: 06/02/2024] Open
Abstract
The development of distinct dendritic cell (DC) subsets, namely, plasmacytoid DCs (pDCs) and conventional DC subsets (cDC1s and cDC2s), is controlled by specific transcription factors. IRF8 is essential for the fate specification of cDC1s. However, how the expression of Irf8 is regulated is not fully understood. In this study, we identified TRIM33 as a critical regulator of DC differentiation and maintenance. TRIM33 deletion in Trim33fl/fl Cre-ERT2 mice significantly impaired DC differentiation from hematopoietic progenitors at different developmental stages. TRIM33 deficiency downregulated the expression of multiple genes associated with DC differentiation in these progenitors. TRIM33 promoted the transcription of Irf8 to facilitate the differentiation of cDC1s by maintaining adequate CDK9 and Ser2 phosphorylated RNA polymerase II (S2 Pol II) levels at Irf8 gene sites. Moreover, TRIM33 prevented the apoptosis of DCs and progenitors by directly suppressing the PU.1-mediated transcription of Bcl2l11, thereby maintaining DC homeostasis. Taken together, our findings identified TRIM33 as a novel and crucial regulator of DC differentiation and maintenance through the modulation of Irf8 and Bcl2l11 expression. The finding that TRIM33 functions as a critical regulator of both DC differentiation and survival provides potential benefits for devising DC-based immune interventions and therapies.
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Affiliation(s)
- Xiangyi Shen
- Institute for Immunology, School of Basic Medical Sciences, Tsinghua University, 100084, Beijing, China
| | - Xiaoguang Li
- Institute for Immunology, School of Basic Medical Sciences, Tsinghua University, 100084, Beijing, China
- Joint Graduate Program of Peking-Tsinghua-National Institute of Biological Sciences, School of Life Sciences, Tsinghua University, 100084, Beijing, China
| | - Tao Wu
- Institute for Immunology, School of Basic Medical Sciences, Tsinghua University, 100084, Beijing, China
- Tsinghua-Peking Center for Life Sciences, Tsinghua University, 100084, Beijing, China
| | - Tingting Guo
- Institute for Immunology, School of Basic Medical Sciences, Tsinghua University, 100084, Beijing, China
- Tsinghua-Peking Center for Life Sciences, Tsinghua University, 100084, Beijing, China
| | - Jiaoyan Lv
- Institute for Immunology, School of Basic Medical Sciences, Tsinghua University, 100084, Beijing, China
- Tsinghua-Peking Center for Life Sciences, Tsinghua University, 100084, Beijing, China
| | - Zhimin He
- Institute for Immunology, School of Basic Medical Sciences, Tsinghua University, 100084, Beijing, China
- Tsinghua-Peking Center for Life Sciences, Tsinghua University, 100084, Beijing, China
| | - Maocai Luo
- Institute for Immunology, School of Basic Medical Sciences, Tsinghua University, 100084, Beijing, China
| | - Xinyi Zhu
- Institute for Immunology, School of Basic Medical Sciences, Tsinghua University, 100084, Beijing, China
- Tsinghua-Peking Center for Life Sciences, Tsinghua University, 100084, Beijing, China
| | - Yujie Tian
- Institute for Immunology, School of Basic Medical Sciences, Tsinghua University, 100084, Beijing, China
- Joint Graduate Program of Peking-Tsinghua-National Institute of Biological Sciences, School of Life Sciences, Tsinghua University, 100084, Beijing, China
| | - Wenlong Lai
- Institute for Immunology, School of Basic Medical Sciences, Tsinghua University, 100084, Beijing, China
| | - Chen Dong
- Institute for Immunology, School of Basic Medical Sciences, Tsinghua University, 100084, Beijing, China
- Tsinghua-Peking Center for Life Sciences, Tsinghua University, 100084, Beijing, China
- Beijing Key Laboratory for Immunological Research on Chronic Diseases, 100084, Beijing, China
- Westlake University School of Medicine, Hangzhou, 310024, China
| | - Xiaoyu Hu
- Institute for Immunology, School of Basic Medical Sciences, Tsinghua University, 100084, Beijing, China
- Tsinghua-Peking Center for Life Sciences, Tsinghua University, 100084, Beijing, China
- Beijing Key Laboratory for Immunological Research on Chronic Diseases, 100084, Beijing, China
| | - Li Wu
- Institute for Immunology, School of Basic Medical Sciences, Tsinghua University, 100084, Beijing, China.
- Tsinghua-Peking Center for Life Sciences, Tsinghua University, 100084, Beijing, China.
- Beijing Key Laboratory for Immunological Research on Chronic Diseases, 100084, Beijing, China.
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3
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De Leeuw E, Hammad H. The role of dendritic cells in respiratory viral infection. Eur Respir Rev 2024; 33:230250. [PMID: 38811032 PMCID: PMC11134197 DOI: 10.1183/16000617.0250-2023] [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: 12/05/2023] [Accepted: 03/19/2024] [Indexed: 05/31/2024] Open
Abstract
Respiratory viral infections represent one of the major causes of death worldwide. The recent coronavirus disease 2019 pandemic alone claimed the lives of over 6 million people around the globe. It is therefore crucial to understand how the immune system responds to these threats and how respiratory infection can be controlled and constrained. Dendritic cells (DCs) are one of the key players in antiviral immunity because of their ability to detect pathogens. They can orchestrate an immune response that will, in most cases, lead to viral clearance. Different subsets of DCs are present in the lung and each subset can contribute to antiviral responses through various mechanisms. In this review, we discuss the role of the different lung DC subsets in response to common respiratory viruses, with a focus on respiratory syncytial virus, influenza A virus and severe acute respiratory syndrome coronavirus 2. We also review how lung DC-mediated responses to respiratory viruses can lead to the worsening of an existing chronic pulmonary disease such as asthma. Throughout the review, we discuss results obtained from animal studies as well as results generated from infected patients.
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Affiliation(s)
- Elisabeth De Leeuw
- Laboratory of Mucosal Immunology and Immunoregulation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - Hamida Hammad
- Laboratory of Mucosal Immunology and Immunoregulation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
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4
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Tiniakou I, Hsu PF, Lopez-Zepeda LS, Garipler G, Esteva E, Adams NM, Jang G, Soni C, Lau CM, Liu F, Khodadadi-Jamayran A, Rodrick TC, Jones D, Tsirigos A, Ohler U, Bedford MT, Nimer SD, Kaartinen V, Mazzoni EO, Reizis B. Genome-wide screening identifies Trim33 as an essential regulator of dendritic cell differentiation. Sci Immunol 2024; 9:eadi1023. [PMID: 38608038 PMCID: PMC11182672 DOI: 10.1126/sciimmunol.adi1023] [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: 04/05/2023] [Accepted: 03/21/2024] [Indexed: 04/14/2024]
Abstract
The development of dendritic cells (DCs), including antigen-presenting conventional DCs (cDCs) and cytokine-producing plasmacytoid DCs (pDCs), is controlled by the growth factor Flt3 ligand (Flt3L) and its receptor Flt3. We genetically dissected Flt3L-driven DC differentiation using CRISPR-Cas9-based screening. Genome-wide screening identified multiple regulators of DC differentiation including subunits of TSC and GATOR1 complexes, which restricted progenitor growth but enabled DC differentiation by inhibiting mTOR signaling. An orthogonal screen identified the transcriptional repressor Trim33 (TIF-1γ) as a regulator of DC differentiation. Conditional targeting in vivo revealed an essential role of Trim33 in the development of all DCs, but not of monocytes or granulocytes. In particular, deletion of Trim33 caused rapid loss of DC progenitors, pDCs, and the cross-presenting cDC1 subset. Trim33-deficient Flt3+ progenitors up-regulated pro-inflammatory and macrophage-specific genes but failed to induce the DC differentiation program. Collectively, these data elucidate mechanisms that control Flt3L-driven differentiation of the entire DC lineage and identify Trim33 as its essential regulator.
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Affiliation(s)
- Ioanna Tiniakou
- Department of Pathology, New York University Grossman School of Medicine; New York, NY, USA
| | - Pei-Feng Hsu
- Department of Pathology, New York University Grossman School of Medicine; New York, NY, USA
| | - Lorena S. Lopez-Zepeda
- Department of Biology, Humboldt Universität zu Berlin; Berlin, Germany
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine; Berlin, Germany
| | - Görkem Garipler
- Department of Biology, New York University; New York, NY, USA
| | - Eduardo Esteva
- Department of Pathology, New York University Grossman School of Medicine; New York, NY, USA
| | - Nicholas M. Adams
- Department of Pathology, New York University Grossman School of Medicine; New York, NY, USA
| | - Geunhyo Jang
- Department of Pathology, New York University Grossman School of Medicine; New York, NY, USA
| | - Chetna Soni
- Department of Pathology, New York University Grossman School of Medicine; New York, NY, USA
| | - Colleen M. Lau
- Department of Microbiology and Immunology, Cornell University College of Veterinary Medicine; Ithaca, NY, USA
| | - Fan Liu
- Department of Biochemistry and Molecular Biology, Department of Medicine and Sylvester Comprehensive Cancer Center, University of Miami, Miller School of Medicine; Miami, FL, USA
| | - Alireza Khodadadi-Jamayran
- Department of Pathology, New York University Grossman School of Medicine; New York, NY, USA
- Applied Bioinformatics Laboratories, New York University Grossman School of Medicine; New York, NY, USA
| | - Tori C. Rodrick
- Metabolomics Laboratory, Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine; New York, NY, USA
| | - Drew Jones
- Metabolomics Laboratory, Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine; New York, NY, USA
| | - Aristotelis Tsirigos
- Department of Pathology, New York University Grossman School of Medicine; New York, NY, USA
- Applied Bioinformatics Laboratories, New York University Grossman School of Medicine; New York, NY, USA
| | - Uwe Ohler
- Department of Biology, Humboldt Universität zu Berlin; Berlin, Germany
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine; Berlin, Germany
| | - Mark T. Bedford
- Department of Epigenetics & Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center; Houston, TX, USA
| | - Stephen D. Nimer
- Department of Biochemistry and Molecular Biology, Department of Medicine and Sylvester Comprehensive Cancer Center, University of Miami, Miller School of Medicine; Miami, FL, USA
| | - Vesa Kaartinen
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry; Ann Arbor, MI, USA
| | | | - Boris Reizis
- Department of Pathology, New York University Grossman School of Medicine; New York, NY, USA
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5
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Zhang Y, Wu T, He Z, Lai W, Shen X, Lv J, Wang Y, Wu L. Regulation of pDC fate determination by histone deacetylase 3. eLife 2023; 12:e80477. [PMID: 38011375 PMCID: PMC10732571 DOI: 10.7554/elife.80477] [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: 05/22/2022] [Accepted: 11/22/2023] [Indexed: 11/29/2023] Open
Abstract
Dendritic cells (DCs), the key antigen-presenting cells, are primary regulators of immune responses. Transcriptional regulation of DC development had been one of the major research interests in DC biology; however, the epigenetic regulatory mechanisms during DC development remains unclear. Here, we report that Histone deacetylase 3 (Hdac3), an important epigenetic regulator, is highly expressed in pDCs, and its deficiency profoundly impaired the development of pDCs. Significant disturbance of homeostasis of hematopoietic progenitors was also observed in HDAC3-deficient mice, manifested by altered cell numbers of these progenitors and defective differentiation potentials for pDCs. Using the in vitro Flt3L supplemented DC culture system, we further demonstrated that HDAC3 was required for the differentiation of pDCs from progenitors at all developmental stages. Mechanistically, HDAC3 deficiency resulted in enhanced expression of cDC1-associated genes, owing to markedly elevated H3K27 acetylation (H3K27ac) at these gene sites in BM pDCs. In contrast, the expression of pDC-associated genes was significantly downregulated, leading to defective pDC differentiation.
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Affiliation(s)
- Yijun Zhang
- Institute for Immunology, Tsinghua-Peking Center for Life Sciences, School of Medicine, Tsinghua UniversityBeijingChina
- Beijing Key Laboratory for Immunological Research on Chronic DiseasesBeijingChina
| | - Tao Wu
- Institute for Immunology, Tsinghua-Peking Center for Life Sciences, School of Medicine, Tsinghua UniversityBeijingChina
- Beijing Key Laboratory for Immunological Research on Chronic DiseasesBeijingChina
| | - Zhimin He
- Institute for Immunology, Tsinghua-Peking Center for Life Sciences, School of Medicine, Tsinghua UniversityBeijingChina
- Beijing Key Laboratory for Immunological Research on Chronic DiseasesBeijingChina
| | - Wenlong Lai
- Institute for Immunology, Tsinghua-Peking Center for Life Sciences, School of Medicine, Tsinghua UniversityBeijingChina
- Beijing Key Laboratory for Immunological Research on Chronic DiseasesBeijingChina
| | - Xiangyi Shen
- Institute for Immunology, Tsinghua-Peking Center for Life Sciences, School of Medicine, Tsinghua UniversityBeijingChina
- Beijing Key Laboratory for Immunological Research on Chronic DiseasesBeijingChina
| | - Jiaoyan Lv
- Institute for Immunology, Tsinghua-Peking Center for Life Sciences, School of Medicine, Tsinghua UniversityBeijingChina
- Beijing Key Laboratory for Immunological Research on Chronic DiseasesBeijingChina
| | - Yuanhao Wang
- Institute for Immunology, Tsinghua-Peking Center for Life Sciences, School of Medicine, Tsinghua UniversityBeijingChina
- Beijing Key Laboratory for Immunological Research on Chronic DiseasesBeijingChina
| | - Li Wu
- Institute for Immunology, Tsinghua-Peking Center for Life Sciences, School of Medicine, Tsinghua UniversityBeijingChina
- Beijing Key Laboratory for Immunological Research on Chronic DiseasesBeijingChina
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6
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Wu Z, Shih B, Macdonald J, Meunier D, Hogan K, Chintoan-Uta C, Gilhooley H, Hu T, Beltran M, Henderson NC, Sang HM, Stevens MP, McGrew MJ, Balic A. Development and function of chicken XCR1 + conventional dendritic cells. Front Immunol 2023; 14:1273661. [PMID: 37954617 PMCID: PMC10634274 DOI: 10.3389/fimmu.2023.1273661] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 10/06/2023] [Indexed: 11/14/2023] Open
Abstract
Conventional dendritic cells (cDCs) are antigen-presenting cells (APCs) that play a central role in linking innate and adaptive immunity. cDCs have been well described in a number of different mammalian species, but remain poorly characterised in the chicken. In this study, we use previously described chicken cDC specific reagents, a novel gene-edited chicken line and single-cell RNA sequencing (scRNAseq) to characterise chicken splenic cDCs. In contrast to mammals, scRNAseq analysis indicates that the chicken spleen contains a single, chemokine receptor XCR1 expressing, cDC subset. By sexual maturity the XCR1+ cDC population is the most abundant mononuclear phagocyte cell subset in the chicken spleen. scRNAseq analysis revealed substantial heterogeneity within the chicken splenic XCR1+ cDC population. Immature MHC class II (MHCII)LOW XCR1+ cDCs expressed a range of viral resistance genes. Maturation to MHCIIHIGH XCR1+ cDCs was associated with reduced expression of anti-viral gene expression and increased expression of genes related to antigen presentation via the MHCII and cross-presentation pathways. To visualise and transiently ablate chicken XCR1+ cDCs in situ, we generated XCR1-iCaspase9-RFP chickens using a CRISPR-Cas9 knockin transgenesis approach to precisely edit the XCR1 locus, replacing the XCR1 coding region with genes for a fluorescent protein (TagRFP), and inducible Caspase 9. After inducible ablation, the chicken spleen is initially repopulated by immature CD1.1+ XCR1+ cDCs. XCR1+ cDCs are abundant in the splenic red pulp, in close association with CD8+ T-cells. Knockout of XCR1 prevented this clustering of cDCs with CD8+ T-cells. Taken together these data indicate a conserved role for chicken and mammalian XCR1+ cDCs in driving CD8+ T-cells responses.
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Affiliation(s)
- Zhiguang Wu
- The Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
| | - Barbara Shih
- The Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, United Kingdom
| | - Joni Macdonald
- The Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
| | - Dominique Meunier
- The Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
| | - Kris Hogan
- The Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
| | | | - Hazel Gilhooley
- The Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
| | - Tuanjun Hu
- The Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
| | - Mariana Beltran
- Centre for Inflammation Research, The Queen’s Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Neil C. Henderson
- Centre for Inflammation Research, The Queen’s Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
- Medical Research Council (MRC) Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, United Kingdom
| | - Helen M. Sang
- The Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
| | - Mark P. Stevens
- The Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
| | - Michael J. McGrew
- The Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
| | - Adam Balic
- The Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, VIC, Australia
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7
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Arroyo Portilla C, Fenouil R, Wagner C, Luciani C, Lagier M, Da Silva C, Hidalgo-Villeda F, Spinelli L, Fallet M, Tomas J, Gorvel JP, Lelouard H. Peyer's patch phagocytes acquire specific transcriptional programs that influence their maturation and activation profiles. Mucosal Immunol 2023; 16:527-547. [PMID: 37257775 DOI: 10.1016/j.mucimm.2023.05.009] [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: 04/26/2023] [Accepted: 05/23/2023] [Indexed: 06/02/2023]
Abstract
Peyer's patches (PPs) are secondary lymphoid organs in contact with the external environment via the intestinal lumen, thus combining antigen sampling and immune response initiation sites. Therefore, they provide a unique opportunity to study the entire process of phagocyte differentiation and activation in vivo. Here, we deciphered the transcriptional and spatial landscape of PP phagocyte populations from their emergence in the tissue to their final maturation state at homeostasis and under stimulation. Activation of monocyte-derived Lysozyme-expressing dendritic cells (LysoDCs) differs from that of macrophages by their upregulation of conventional DC (cDC) signature genes such as Ccr7 and downregulation of typical monocyte-derived cell genes such as Cx3cr1. We identified gene sets that distinguish PP cDCs from the villus ones and from LysoDCs. We also identified key immature, early, intermediate, and late maturation markers of PP phagocytes. Finally, exploiting the ability of the PP interfollicular region to host both villous and subepithelial dome emigrated cDCs, we showed that the type of stimulus, the subset, but also the initial location of cDCs shape their activation profile and thus direct the immune response. Our study highlights the importance of targeting the right phagocyte subset at the right place and time to manipulate the immune response.
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Affiliation(s)
- Cynthia Arroyo Portilla
- Aix Marseille Univ, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France; Departamento de Análisis Clínicos, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - Romain Fenouil
- Aix Marseille Univ, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France
| | - Camille Wagner
- Aix Marseille Univ, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France
| | - Cécilia Luciani
- Aix Marseille Univ, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France
| | - Margaux Lagier
- Aix Marseille Univ, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France
| | - Clément Da Silva
- Aix Marseille Univ, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France
| | - Fanny Hidalgo-Villeda
- Aix Marseille Univ, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France; Escuela de Microbiología, Facultad de Ciencias, Universidad Nacional Autónoma de Honduras, Tegucigalpa, Honduras
| | - Lionel Spinelli
- Aix Marseille Univ, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France
| | - Mathieu Fallet
- Aix Marseille Univ, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France
| | - Julie Tomas
- Aix Marseille Univ, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France
| | - Jean-Pierre Gorvel
- Aix Marseille Univ, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France
| | - Hugues Lelouard
- Aix Marseille Univ, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France.
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8
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Zhang S, Audiger C, Chopin M, Nutt SL. Transcriptional regulation of dendritic cell development and function. Front Immunol 2023; 14:1182553. [PMID: 37520521 PMCID: PMC10382230 DOI: 10.3389/fimmu.2023.1182553] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 06/28/2023] [Indexed: 08/01/2023] Open
Abstract
Dendritic cells (DCs) are sentinel immune cells that form a critical bridge linking the innate and adaptive immune systems. Extensive research addressing the cellular origin and heterogeneity of the DC network has revealed the essential role played by the spatiotemporal activity of key transcription factors. In response to environmental signals DC mature but it is only following the sensing of environmental signals that DC can induce an antigen specific T cell response. Thus, whilst the coordinate action of transcription factors governs DC differentiation, sensing of environmental signals by DC is instrumental in shaping their functional properties. In this review, we provide an overview that focuses on recent advances in understanding the transcriptional networks that regulate the development of the reported DC subsets, shedding light on the function of different DC subsets. Specifically, we discuss the emerging knowledge on the heterogeneity of cDC2s, the ontogeny of pDCs, and the newly described DC subset, DC3. Additionally, we examine critical transcription factors such as IRF8, PU.1, and E2-2 and their regulatory mechanisms and downstream targets. We highlight the complex interplay between these transcription factors, which shape the DC transcriptome and influence their function in response to environmental stimuli. The information presented in this review provides essential insights into the regulation of DC development and function, which might have implications for developing novel therapeutic strategies for immune-related diseases.
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Affiliation(s)
- Shengbo Zhang
- Immunology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Cindy Audiger
- Immunology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Michaël Chopin
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Stephen L. Nutt
- Immunology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
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9
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Kątnik E, Gomułkiewicz A, Piotrowska A, Grzegrzółka J, Rusak A, Kmiecik A, Ratajczak-Wielgomas K, Dzięgiel P. BCL11A Expression in Breast Cancer. Curr Issues Mol Biol 2023; 45:2681-2698. [PMID: 37185699 PMCID: PMC10137054 DOI: 10.3390/cimb45040175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/20/2023] [Accepted: 03/21/2023] [Indexed: 05/17/2023] Open
Abstract
B-cell leukemia/lymphoma 11A (BCL11A) is a transcription factor that regulates the expression of genes involved in cell division or apoptosis. A link between high BCL11A expression and a worse prognosis has been demonstrated in patients with various cancers. The aim of this study was to investigate the expression pattern of BCL11A in breast cancer (BC) cases and mastopathy samples and to correlate the results with the clinicopathological data. The expression of the BCL11A protein was investigated using immunohistochemistry (IHC) on 200 cases of BC and 13 mastopathy samples. The level of BCL11A mRNA was determined using real-time PCR in 22 cases of BC and 6 mastopathy samples. The expression of BCL11A was also examined at the protein and mRNA levels in BC cell lines. A higher expression level of BCL11A in BC cases was shown compared to mastopathy samples. The expression level of BCL11A in BC cases and in the studied cell lines decreased with the increasing grade of histological malignancy (G). It was also negatively correlated with the primary tumor size. A significantly lower expression of BCL11A was found in BC that did not express estrogen or progesterone receptors and in triple-negative cases. The results of our research suggest that BCL11A may be relevant in the development of BC.
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Affiliation(s)
- Ewa Kątnik
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, 50-368 Wroclaw, Poland
| | - Agnieszka Gomułkiewicz
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, 50-368 Wroclaw, Poland
| | - Aleksandra Piotrowska
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, 50-368 Wroclaw, Poland
| | - Jędrzej Grzegrzółka
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, 50-368 Wroclaw, Poland
| | - Agnieszka Rusak
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, 50-368 Wroclaw, Poland
| | - Alicja Kmiecik
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, 50-368 Wroclaw, Poland
| | - Katarzyna Ratajczak-Wielgomas
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, 50-368 Wroclaw, Poland
| | - Piotr Dzięgiel
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, 50-368 Wroclaw, Poland
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10
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Kitajima K, Shingai M, Ando H, Hamasaki M, Hara T. An interferon-γ/FLT3 axis positively regulates hemopoietic progenitor cell expansion from human pluripotent stem cells. Stem Cells 2022; 40:906-918. [PMID: 35901509 DOI: 10.1093/stmcls/sxac052] [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: 03/09/2022] [Accepted: 07/14/2022] [Indexed: 11/12/2022]
Abstract
Since it became possible to differentiate human pluripotent stem cells (hPSCs) into hematopoietic cells in vitro, great efforts have been made to obtain highly potent hematopoietic stem/progenitor cells (HSPCs) from hPSCs. Immunophenotypical HSPCs can be obtained from hPSCs, but their repopulating potential in vivo is low. Here, we developed a novel hematopoietic differentiation method for human induced pluripotent stem cells (hiPSCs) to determine why the existing hPSC differentiation systems are inadequate. hiPSC-derived CD45 +CD34 + cells in our system were mostly CD38 - immunophenotypical HSPCs. The vast majority of human CD45 +CD34 + cells in umbilical cord blood, fetal liver, and bone marrow are CD38 + hematopoietic progenitor cells (HPCs); therefore, the poor production of CD38 + HPCs was indicative of a systematic problem. hiPSC-derived CD45 +CD34 + cells did not express FLT3, a receptor tyrosine kinase. Exogenous FLT3 activity significantly enhanced production of CD38 + HPCs from hiPSCs. Thus, poor production of CD38 + HPCs was due to a lack of FLT3 expression. Interferon-γ upregulated expression of FLT3 and increased the number of CD38 + HPCs among hiPSC-derived CD45 +CD34 + cells. These results suggest that poor production of CD38 + HPCs with hPSC differentiation systems is due to a lack of FLT3 expression, and that addition of interferon-γ can solve this problem.
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Affiliation(s)
- Kenji Kitajima
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Minako Shingai
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.,Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hikaru Ando
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.,Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mako Hamasaki
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.,Graduate School of Science, Department of Biological Science, Tokyo Metropolitan University, Tokyo, Japan
| | - Takahiko Hara
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.,Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.,Graduate School of Science, Department of Biological Science, Tokyo Metropolitan University, Tokyo, Japan
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11
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Roussel X, Garnache Ottou F, Renosi F. Plasmacytoid Dendritic Cells, a Novel Target in Myeloid Neoplasms. Cancers (Basel) 2022; 14:cancers14143545. [PMID: 35884612 PMCID: PMC9317563 DOI: 10.3390/cancers14143545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/12/2022] [Accepted: 07/18/2022] [Indexed: 02/01/2023] Open
Abstract
Plasmacytoid dendritic cells (pDC) are the main type I interferon producing cells in humans and are able to modulate innate and adaptive immune responses. Tumor infiltration by plasmacytoid dendritic cells is already well described and is associated with poor outcomes in cancers due to the tolerogenic activity of pDC. In hematological diseases, Blastic Plasmacytoid Dendritic Cells Neoplasm (BPDCN), aggressive leukemia derived from pDCs, is well described, but little is known about tumor infiltration by mature pDC described in Myeloid Neoplasms (MN). Recently, mature pDC proliferation (MPDCP) has been described as a differential diagnosis of BPDCN associated with acute myeloid leukemia (pDC-AML), myelodysplastic syndrome (pDC-MDS) and chronic myelomonocytic leukemia (pDC-CMML). Tumor cells are myeloid blasts and/or mature myeloid cells from related myeloid disorders and pDC derived from a clonal proliferation. The poor prognosis associated with MPDCP requires a better understanding of pDC biology, MN oncogenesis and immune response. This review provides a comprehensive overview about the biological aspects of pDCs, the description of pDC proliferation in MN, and an insight into putative therapies in pDC-AML regarding personalized medicine.
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Affiliation(s)
- Xavier Roussel
- INSERM, EFS BFC, UMR1098 RIGHT, University of Bourgogne Franche-Comté, 25000 Besancon, France;
- Department of Clinical Hematology, University Hospital of Besançon, 25000 Besançon, France
- Correspondence: (X.R.); (F.R.)
| | - Francine Garnache Ottou
- INSERM, EFS BFC, UMR1098 RIGHT, University of Bourgogne Franche-Comté, 25000 Besancon, France;
- Etablissement Français du Sang Bourgogne Franche-Comté, Laboratoire d’Hématologie et d’Immunologie Régional, 25020 Besançon, France
| | - Florian Renosi
- INSERM, EFS BFC, UMR1098 RIGHT, University of Bourgogne Franche-Comté, 25000 Besancon, France;
- Etablissement Français du Sang Bourgogne Franche-Comté, Laboratoire d’Hématologie et d’Immunologie Régional, 25020 Besançon, France
- Correspondence: (X.R.); (F.R.)
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12
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Yin H, Guo R, Zhang H, Liu S, Gong Y, Yuan Y. A Dynamic Transcriptome Map of Different Tissue Microenvironment Cells Identified During Gastric Cancer Development Using Single-Cell RNA Sequencing. Front Immunol 2021; 12:728169. [PMID: 34745098 PMCID: PMC8566821 DOI: 10.3389/fimmu.2021.728169] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 10/06/2021] [Indexed: 12/20/2022] Open
Abstract
Gastric cancer (GC) development trends have identified multiple processes ranging from inflammation to carcinogenesis, however, key pathogenic mechanisms remain unclear. Tissue microenvironment (TME) cells are critical for the progression of malignant tumors. Here, we generated a dynamic transcriptome map of various TME cells during multi-disease stages using single-cell sequencing analysis. We observed a set of key transition markers related to TME cell carcinogenic evolution, and delineated landmark dynamic carcinogenic trajectories of these cells. Of these, macrophages, fibroblasts, and endothelial cells exerted considerable effects toward epithelial cells, suggesting these cells may be key TME factors promoting GC occurrence and development. Our results suggest a phenotypic convergence of different TME cell types toward tumor formation processes in GC. We believe our data would pave the way for early GC detection, diagnosis, and treatment therapies.
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Affiliation(s)
- Honghao Yin
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, China.,Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Rui Guo
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, China.,Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Huanyu Zhang
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, China.,Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Songyi Liu
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, China.,Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Yuehua Gong
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, China.,Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Yuan Yuan
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, China.,Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, China
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13
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Xiao W, Chan A, Waarts MR, Mishra T, Liu Y, Cai SF, Yao J, Gao Q, Bowman RL, Koche RP, Csete IS, DelGaudio NL, Derkach A, Baik J, Yanis S, Famulare CA, Patel M, Arcila ME, Stahl M, Rampal RK, Tallman MS, Zhang Y, Dogan A, Goldberg AD, Roshal M, Levine RL. Plasmacytoid dendritic cell expansion defines a distinct subset of RUNX1-mutated acute myeloid leukemia. Blood 2021; 137:1377-1391. [PMID: 32871587 PMCID: PMC7955409 DOI: 10.1182/blood.2020007897] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 08/18/2020] [Indexed: 02/06/2023] Open
Abstract
Plasmacytoid dendritic cells (pDCs) are the principal natural type I interferon-producing dendritic cells. Neoplastic expansion of pDCs and pDC precursors leads to blastic plasmacytoid dendritic cell neoplasm (BPDCN), and clonal expansion of mature pDCs has been described in chronic myelomonocytic leukemia. The role of pDC expansion in acute myeloid leukemia (AML) is poorly studied. Here, we characterize patients with AML with pDC expansion (pDC-AML), which we observe in ∼5% of AML cases. pDC-AMLs often possess cross-lineage antigen expression and have adverse risk stratification with poor outcome. RUNX1 mutations are the most common somatic alterations in pDC-AML (>70%) and are much more common than in AML without pDC expansion and BPDCN. We demonstrate that pDCs are clonally related to, as well as originate from, leukemic blasts in pDC-AML. We further demonstrate that leukemic blasts from RUNX1-mutated AML upregulate a pDC transcriptional program, poising the cells toward pDC differentiation and expansion. Finally, tagraxofusp, a targeted therapy directed to CD123, reduces leukemic burden and eliminates pDCs in a patient-derived xenograft model. In conclusion, pDC-AML is characterized by a high frequency of RUNX1 mutations and increased expression of a pDC transcriptional program. CD123 targeting represents a potential treatment approach for pDC-AML.
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Affiliation(s)
- Wenbin Xiao
- Department of Pathology, Hematopathology Service
- Human Oncology and Pathogenesis Program, Molecular Cancer Medicine Service
| | | | - Michael R Waarts
- Human Oncology and Pathogenesis Program, Molecular Cancer Medicine Service
| | - Tanmay Mishra
- Human Oncology and Pathogenesis Program, Molecular Cancer Medicine Service
| | - Ying Liu
- Department of Pathology, Hematopathology Service
| | - Sheng F Cai
- Human Oncology and Pathogenesis Program, Molecular Cancer Medicine Service
- Department of Medicine, Leukemia Service
| | - Jinjuan Yao
- Department of Pathology, Molecular Diagnostic Laboratory
| | - Qi Gao
- Department of Pathology, Hematopathology Service
| | - Robert L Bowman
- Human Oncology and Pathogenesis Program, Molecular Cancer Medicine Service
| | | | - Isabelle S Csete
- Human Oncology and Pathogenesis Program, Molecular Cancer Medicine Service
| | - Nicole L DelGaudio
- Human Oncology and Pathogenesis Program, Molecular Cancer Medicine Service
| | | | - Jeeyeon Baik
- Department of Pathology, Hematopathology Service
| | - Sophia Yanis
- Department of Pathology, Hematopathology Service
| | | | | | - Maria E Arcila
- Department of Pathology, Hematopathology Service
- Department of Pathology, Molecular Diagnostic Laboratory
| | | | - Raajit K Rampal
- Human Oncology and Pathogenesis Program, Molecular Cancer Medicine Service
- Department of Medicine, Leukemia Service
| | | | - Yanming Zhang
- Department of Pathology, Cytogenetics Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Ahmet Dogan
- Department of Pathology, Hematopathology Service
| | | | | | - Ross L Levine
- Human Oncology and Pathogenesis Program, Molecular Cancer Medicine Service
- Department of Medicine, Leukemia Service
- Center for Epigenetics Research
- Center for Hematologic Malignancies, and
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14
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Anderson DA, Dutertre CA, Ginhoux F, Murphy KM. Genetic models of human and mouse dendritic cell development and function. Nat Rev Immunol 2021; 21:101-115. [PMID: 32908299 PMCID: PMC10955724 DOI: 10.1038/s41577-020-00413-x] [Citation(s) in RCA: 154] [Impact Index Per Article: 51.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/28/2020] [Indexed: 12/13/2022]
Abstract
Dendritic cells (DCs) develop in the bone marrow from haematopoietic progenitors that have numerous shared characteristics between mice and humans. Human counterparts of mouse DC progenitors have been identified by their shared transcriptional signatures and developmental potential. New findings continue to revise models of DC ontogeny but it is well accepted that DCs can be divided into two main functional groups. Classical DCs include type 1 and type 2 subsets, which can detect different pathogens, produce specific cytokines and present antigens to polarize mainly naive CD8+ or CD4+ T cells, respectively. By contrast, the function of plasmacytoid DCs is largely innate and restricted to the detection of viral infections and the production of type I interferon. Here, we discuss genetic models of mouse DC development and function that have aided in correlating ontogeny with function, as well as how these findings can be translated to human DCs and their progenitors.
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Affiliation(s)
- David A Anderson
- Department of Pathology and Immunology, School of Medicine, Washington University in St. Louis, St. Louis, MO, USA
| | | | - Florent Ginhoux
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore, Singapore
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Centre, Singapore, Singapore
| | - Kenneth M Murphy
- Department of Pathology and Immunology, School of Medicine, Washington University in St. Louis, St. Louis, MO, USA.
- Howard Hughes Medical Institute, School of Medicine, Washington University in St. Louis, St. Louis, MO, USA.
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15
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BCL11A: a potential diagnostic biomarker and therapeutic target in human diseases. Biosci Rep 2020; 39:220893. [PMID: 31654056 PMCID: PMC6851505 DOI: 10.1042/bsr20190604] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 12/16/2022] Open
Abstract
Transcription factor B-cell lymphoma/leukemia 11A (BCL11A) gene encodes a zinc-finger protein that is predominantly expressed in brain and hematopoietic tissue. BCL11A functions mainly as a transcriptional repressor that is crucial in brain, hematopoietic system development, as well as fetal-to-adult hemoglobin switching. The expression of this gene is regulated by microRNAs, transcription factors and genetic variations. A number of studies have recently shown that BCL11A is involved in β-hemoglobinopathies, hematological malignancies, malignant solid tumors, 2p15-p16.1 microdeletion syndrome, and Type II diabetes. It has been suggested that BCL11A may be a potential prognostic biomarker and therapeutic target for some diseases. In this review, we summarize the current research state of BCL11A, including its biochemistry, expression, regulation, function, and its possible clinical application in human diseases.
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16
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Leylek R, Alcántara-Hernández M, Lanzar Z, Lüdtke A, Perez OA, Reizis B, Idoyaga J. Integrated Cross-Species Analysis Identifies a Conserved Transitional Dendritic Cell Population. Cell Rep 2020; 29:3736-3750.e8. [PMID: 31825848 PMCID: PMC6951814 DOI: 10.1016/j.celrep.2019.11.042] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 10/16/2019] [Accepted: 11/08/2019] [Indexed: 01/05/2023] Open
Abstract
Plasmacytoid dendritic cells (pDCs) are sensor cells with diverse immune functions, from type I interferon (IFN-I) production to antigen presentation, T cell activation, and tolerance. Regulation of these functions remains poorly understood but could be mediated by functionally specialized pDC subpopulations. We address pDC diversity using a high-dimensional single-cell approach: mass cytometry (CyTOF). Our analysis uncovers a murine pDC-like population that specializes in antigen presentation with limited capacity for IFN-I production. Using a multifaceted cross-species comparison, we show that this pDC-like population is the definitive murine equivalent of the recently described human AXL+ DCs, which we unify under the name transitional DCs (tDCs) given their continuum of pDC and cDC2 characteristics. tDCs share developmental traits with pDCs, as well as recruitment dynamics during viral infection. Altogether, we provide a framework for deciphering the function of pDCs and tDCs during diseases, which has the potential to open new avenues for therapeutic design. Dendritic cells (DCs) are unique therapeutic targets given their capacity to modulate immune responses. Yet complete alignment of the DC network between species is lacking. Using a multidimensional approach, Leylek et al. identify the mouse homolog of human AXL+ DCs, named transitional DCs (tDCs), and reveal their similarities with pDCs.
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Affiliation(s)
- Rebecca Leylek
- Microbiology & Immunology Department and Immunology Program, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Marcela Alcántara-Hernández
- Microbiology & Immunology Department and Immunology Program, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Zachary Lanzar
- Microbiology & Immunology Department and Immunology Program, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Anja Lüdtke
- Microbiology & Immunology Department and Immunology Program, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Oriana A Perez
- Department of Pathology, New York University School of Medicine, New York, NY 10016, USA
| | - Boris Reizis
- Department of Pathology, New York University School of Medicine, New York, NY 10016, USA
| | - Juliana Idoyaga
- Microbiology & Immunology Department and Immunology Program, Stanford University School of Medicine, Stanford, CA 94305, USA.
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17
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Lamsfus-Calle A, Daniel-Moreno A, Antony JS, Epting T, Heumos L, Baskaran P, Admard J, Casadei N, Latifi N, Siegmund DM, Kormann MSD, Handgretinger R, Mezger M. Comparative targeting analysis of KLF1, BCL11A, and HBG1/2 in CD34 + HSPCs by CRISPR/Cas9 for the induction of fetal hemoglobin. Sci Rep 2020; 10:10133. [PMID: 32576837 PMCID: PMC7311455 DOI: 10.1038/s41598-020-66309-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 05/19/2020] [Indexed: 12/22/2022] Open
Abstract
β-hemoglobinopathies are caused by abnormal or absent production of hemoglobin in the blood due to mutations in the β-globin gene (HBB). Imbalanced expression of adult hemoglobin (HbA) induces strong anemia in patients suffering from the disease. However, individuals with natural-occurring mutations in the HBB cluster or related genes, compensate this disparity through γ-globin expression and subsequent fetal hemoglobin (HbF) production. Several preclinical and clinical studies have been performed in order to induce HbF by knocking-down genes involved in HbF repression (KLF1 and BCL11A) or disrupting the binding sites of several transcription factors in the γ-globin gene (HBG1/2). In this study, we thoroughly compared the different CRISPR/Cas9 gene-disruption strategies by gene editing analysis and assessed their safety profile by RNA-seq and GUIDE-seq. All approaches reached therapeutic levels of HbF after gene editing and showed similar gene expression to the control sample, while no significant off-targets were detected by GUIDE-seq. Likewise, all three gene editing platforms were established in the GMP-grade CliniMACS Prodigy, achieving similar outcome to preclinical devices. Based on this gene editing comparative analysis, we concluded that BCL11A is the most clinically relevant approach while HBG1/2 could represent a promising alternative for the treatment of β-hemoglobinopathies.
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Affiliation(s)
- Andrés Lamsfus-Calle
- University Children's Hospital. Department of Pediatrics I, Hematology and Oncology, University of Tübingen, Tübingen, Germany
| | - Alberto Daniel-Moreno
- University Children's Hospital. Department of Pediatrics I, Hematology and Oncology, University of Tübingen, Tübingen, Germany
| | - Justin S Antony
- University Children's Hospital. Department of Pediatrics I, Hematology and Oncology, University of Tübingen, Tübingen, Germany
| | - Thomas Epting
- Institute for Clinical Chemistry and Laboratory Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Lukas Heumos
- Quantitative Biology Center (QBiC), University of Tübingen, Tübingen, Germany
| | - Praveen Baskaran
- Quantitative Biology Center (QBiC), University of Tübingen, Tübingen, Germany
| | - Jakob Admard
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
| | - Nicolas Casadei
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
| | - Ngadhnjim Latifi
- Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
| | - Darina M Siegmund
- University Hospital Freiburg. Department of Hematology, Oncology, and Stem-Cell Transplantation, Medical Center, University of Freiburg, Freiburg, Germany
| | - Michael S D Kormann
- University Children's Hospital. Department of Pediatrics I, Pediatric Infectiology and Immunology, Translational Genomics and Gene Therapy in Pediatrics, University of Tübingen, Tübingen, Germany
| | - Rupert Handgretinger
- University Children's Hospital. Department of Pediatrics I, Hematology and Oncology, University of Tübingen, Tübingen, Germany
| | - Markus Mezger
- University Children's Hospital. Department of Pediatrics I, Hematology and Oncology, University of Tübingen, Tübingen, Germany.
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18
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Nutt SL, Chopin M. Transcriptional Networks Driving Dendritic Cell Differentiation and Function. Immunity 2020; 52:942-956. [DOI: 10.1016/j.immuni.2020.05.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/23/2020] [Accepted: 05/15/2020] [Indexed: 12/13/2022]
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19
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Daniel-Moreno A, Lamsfus-Calle A, Wilber A, Chambers CB, Johnston I, Antony JS, Epting T, Handgretinger R, Mezger M. Comparative analysis of lentiviral gene transfer approaches designed to promote fetal hemoglobin production for the treatment of β-hemoglobinopathies. Blood Cells Mol Dis 2020; 84:102456. [PMID: 32498026 DOI: 10.1016/j.bcmd.2020.102456] [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: 05/08/2020] [Revised: 05/25/2020] [Accepted: 05/25/2020] [Indexed: 01/05/2023]
Abstract
β-Hemoglobinopathies are among the most common single-gene disorders and are caused by different mutations in the β-globin gene. Recent curative therapeutic approaches for these disorders utilize lentiviral vectors (LVs) to introduce a functional copy of the β-globin gene into the patient's hematopoietic stem cells. Alternatively, fetal hemoglobin (HbF) can reduce or even prevent the symptoms of disease when expressed in adults. Thus, induction of HbF by means of LVs and other molecular approaches has become an alternative treatment of β-hemoglobinopathies. Here, we performed a head-to-head comparative analysis of HbF-inducing LVs encoding for: 1) IGF2BP1, 2) miRNA-embedded shRNA (shmiR) sequences specific for the γ-globin repressor protein BCL11A, and 3) γ-globin gene. Furthermore, two novel baboon envelope proteins (BaEV)-LVs were compared to the commonly used vesicular-stomatitis-virus glycoprotein (VSV-G)-LVs. Therapeutic levels of HbF were achieved for all VSV-G-LV approaches, from a therapeutic level of 20% using γ-globin LVs to 50% for both IGF2BP1 and BCL11A-shmiR LVs. Contrarily, BaEV-LVs conferred lower HbF expression with a peak level of 13%, however, this could still ameliorate symptoms of disease. From this thorough comparative analysis of independent HbF-inducing LV strategies, we conclude that HbF-inducing VSV-G-LVs represent a promising alternative to β-globin gene addition for patients with β-hemoglobinopathies.
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Affiliation(s)
- Alberto Daniel-Moreno
- University Children's Clinic Department of Pediatrics I, Hematology and Oncology, University of Tübingen, Germany
| | - Andrés Lamsfus-Calle
- University Children's Clinic Department of Pediatrics I, Hematology and Oncology, University of Tübingen, Germany
| | - Andrew Wilber
- Department of Medical Microbiology, Immunology and Cell Biology, SIU School of Medicine, and Simmons Cancer Institute, Springfield, IL, USA
| | - Christopher B Chambers
- Department of Medical Microbiology, Immunology and Cell Biology, SIU School of Medicine, and Simmons Cancer Institute, Springfield, IL, USA
| | - Ian Johnston
- Research & Development, Miltenyi Biotec GmbH, Bergisch Gladbach, Germany
| | - Justin S Antony
- University Children's Clinic Department of Pediatrics I, Hematology and Oncology, University of Tübingen, Germany
| | - Thomas Epting
- Clinical Chemistry and Laboratory Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Germany
| | - Rupert Handgretinger
- University Children's Clinic Department of Pediatrics I, Hematology and Oncology, University of Tübingen, Germany
| | - Markus Mezger
- University Children's Clinic Department of Pediatrics I, Hematology and Oncology, University of Tübingen, Germany.
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20
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Abstract
Specification of multipotent blood precursor cells in postnatal mice to become committed T-cell precursors involves a gene regulatory network of several interacting but functionally distinct modules. Many links of this network have been defined by perturbation tests and by functional genomics. However, using the network model to predict real-life kinetics of the commitment process is still difficult, partly due to the tenacity of repressive chromatin states, and to the ability of transcription factors to affect each other's binding site choices through competitive recruitment to alternative sites ("coregulator theft"). To predict kinetics, future models will need to incorporate mechanistic information about chromatin state change dynamics and more sophisticated understanding of the proteomics and cooperative DNA site choices of transcription factor complexes.
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Affiliation(s)
- Ellen V Rothenberg
- Division of Biology & Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
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21
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Bagadia P, Huang X, Liu TT, Murphy KM. Shared Transcriptional Control of Innate Lymphoid Cell and Dendritic Cell Development. Annu Rev Cell Dev Biol 2019; 35:381-406. [PMID: 31283378 PMCID: PMC6886469 DOI: 10.1146/annurev-cellbio-100818-125403] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Innate immunity and adaptive immunity consist of highly specialized immune lineages that depend on transcription factors for both function and development. In this review, we dissect the similarities between two innate lineages, innate lymphoid cells (ILCs) and dendritic cells (DCs), and an adaptive immune lineage, T cells. ILCs, DCs, and T cells make up four functional immune modules and interact in concert to produce a specified immune response. These three immune lineages also share transcriptional networks governing the development of each lineage, and we discuss the similarities between ILCs and DCs in this review.
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Affiliation(s)
- Prachi Bagadia
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri 63108, USA;
| | - Xiao Huang
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri 63108, USA;
| | - Tian-Tian Liu
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri 63108, USA;
| | - Kenneth M Murphy
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri 63108, USA;
- Howard Hughes Medical Institute, Washington University School of Medicine, St. Louis, Missouri 63108, USA
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22
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Bagadia P, Huang X, Liu TT, Durai V, Grajales-Reyes GE, Nitschké M, Modrusan Z, Granja JM, Satpathy AT, Briseño CG, Gargaro M, Iwata A, Kim S, Chang HY, Shaw AS, Murphy TL, Murphy KM. An Nfil3-Zeb2-Id2 pathway imposes Irf8 enhancer switching during cDC1 development. Nat Immunol 2019; 20:1174-1185. [PMID: 31406377 PMCID: PMC6707889 DOI: 10.1038/s41590-019-0449-3] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 06/17/2019] [Indexed: 01/25/2023]
Abstract
Classical type 1 dendritic cells (cDC1s) are required for antiviral and antitumor immunity, which necessitates an understanding of their development. Development of the cDC1 progenitor requires an E-protein-dependent enhancer located 41 kilobases downstream of the transcription start site of the transcription factor Irf8 (+41-kb Irf8 enhancer), but its maturation instead requires the Batf3-dependent +32-kb Irf8 enhancer. To understand this switch, we performed single-cell RNA sequencing of the common dendritic cell progenitor (CDP) and identified a cluster of cells that expressed transcription factors that influence cDC1 development, such as Nfil3, Id2 and Zeb2. Genetic epistasis among these factors revealed that Nfil3 expression is required for the transition from Zeb2hi and Id2lo CDPs to Zeb2lo and Id2hi CDPs, which represent the earliest committed cDC1 progenitors. This genetic circuit blocks E-protein activity to exclude plasmacytoid dendritic cell potential and explains the switch in Irf8 enhancer usage during cDC1 development.
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Affiliation(s)
- Prachi Bagadia
- Department of Pathology and Immunology, Washington University in St. Louis, School of Medicine, St. Louis, MO, USA
| | - Xiao Huang
- Department of Pathology and Immunology, Washington University in St. Louis, School of Medicine, St. Louis, MO, USA
| | - Tian-Tian Liu
- Department of Pathology and Immunology, Washington University in St. Louis, School of Medicine, St. Louis, MO, USA
- Howard Hughes Medical Institute, Washington University in St. Louis, School of Medicine, St. Louis, MO, USA
| | - Vivek Durai
- Department of Pathology and Immunology, Washington University in St. Louis, School of Medicine, St. Louis, MO, USA
| | - Gary E Grajales-Reyes
- Department of Pathology and Immunology, Washington University in St. Louis, School of Medicine, St. Louis, MO, USA
| | | | - Zora Modrusan
- Department of Molecular Biology, Genentech, South San Francisco, CA, USA
| | - Jeffrey M Granja
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, CA, USA
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, USA
- Biophysics Program, Stanford University School of Medicine, Stanford, CA, USA
| | - Ansuman T Satpathy
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, CA, USA
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Carlos G Briseño
- Department of Oncology, Amgen Inc., South San Francisco, CA, USA
| | - Marco Gargaro
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
| | - Arifumi Iwata
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Sunkyung Kim
- Department of Pathology and Immunology, Washington University in St. Louis, School of Medicine, St. Louis, MO, USA
| | - Howard Y Chang
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, CA, USA
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Andrey S Shaw
- Research Biology, Genentech, South San Francisco, CA, USA
| | - Theresa L Murphy
- Department of Pathology and Immunology, Washington University in St. Louis, School of Medicine, St. Louis, MO, USA
| | - Kenneth M Murphy
- Department of Pathology and Immunology, Washington University in St. Louis, School of Medicine, St. Louis, MO, USA.
- Howard Hughes Medical Institute, Washington University in St. Louis, School of Medicine, St. Louis, MO, USA.
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23
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Reizis B. Plasmacytoid Dendritic Cells: Development, Regulation, and Function. Immunity 2019; 50:37-50. [PMID: 30650380 PMCID: PMC6342491 DOI: 10.1016/j.immuni.2018.12.027] [Citation(s) in RCA: 369] [Impact Index Per Article: 73.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 12/17/2018] [Accepted: 12/20/2018] [Indexed: 12/14/2022]
Abstract
Plasmacytoid dendritic cells (pDCs) are a unique sentinel cell type that can detect pathogen-derived nucleic acids and respond with rapid and massive production of type I interferon. This review summarizes our current understanding of pDC biology, including transcriptional regulation, heterogeneity, role in antiviral immune responses, and involvement in immune pathology, particularly in autoimmune diseases, immunodeficiency, and cancer. We also highlight the remaining gaps in our knowledge and important questions for the field, such as the molecular basis of unique interferon-producing capacity of pDCs. A better understanding of cell type-specific positive and negative control of pDC function should pave the way for translational applications focused on this immune cell type.
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Affiliation(s)
- Boris Reizis
- Department of Pathology and Department of Medicine, New York University School of Medicine, New York, NY 10016, USA.
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24
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Dress RJ, Wong AYW, Ginhoux F. Homeostatic control of dendritic cell numbers and differentiation. Immunol Cell Biol 2018; 96:463-476. [DOI: 10.1111/imcb.12028] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 02/18/2018] [Accepted: 02/19/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Regine J Dress
- Singapore Immunology Network (SIgN); Agency for Science; Technology, and Research (A*STAR); Singapore 138648 Singapore
| | - Alicia YW Wong
- Singapore Immunology Network (SIgN); Agency for Science; Technology, and Research (A*STAR); Singapore 138648 Singapore
| | - Florent Ginhoux
- Singapore Immunology Network (SIgN); Agency for Science; Technology, and Research (A*STAR); Singapore 138648 Singapore
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25
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Corrected and Republished from: BCL11A Is a Critical Component of a Transcriptional Network That Activates RAG Expression and V(D)J Recombination. Mol Cell Biol 2017; 38:MCB.00362-17. [PMID: 29038163 DOI: 10.1128/mcb.00362-17] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 08/30/2017] [Indexed: 12/13/2022] Open
Abstract
Recombination activating gene 1 (RAG1) and RAG2 are critical enzymes for initiating variable-diversity-joining [V(D)J] segment recombination, an essential process for antigen receptor expression and lymphocyte development. The BCL11A transcription factor is required for B cell and plasmacytoid dendritic cell (pDC) development, but its molecular function(s) in early B cell fate specification and commitment is unknown. We show here that the major B cell isoform, BCL11A-XL, binds directly to the RAG1 promoter as well as directly to regulatory regions of transcription factors previously implicated in both B cell and pDC development to activate RAG1 and RAG2 gene transcription in pro- and pre-B cells. We employed BCL11A overexpression with recombination substrates to demonstrate direct consequences of BCL11A/RAG modulation on V(D)J recombination. We conclude that BCL11A is a critical component of a transcriptional network that regulates B cell fate by controlling V(D)J recombination.
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26
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Proteomics of Human Dendritic Cell Subsets Reveals Subset-Specific Surface Markers and Differential Inflammasome Function. Cell Rep 2017; 16:2953-2966. [PMID: 27626665 PMCID: PMC5039226 DOI: 10.1016/j.celrep.2016.08.023] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 06/25/2016] [Accepted: 08/05/2016] [Indexed: 01/01/2023] Open
Abstract
Dendritic cells (DCs) play a key role in orchestrating adaptive immune responses. In human blood, three distinct subsets exist: plasmacytoid DCs (pDCs) and BDCA3+ and CD1c+ myeloid DCs. In addition, a DC-like CD16+ monocyte has been reported. Although RNA-expression profiles have been previously compared, protein expression data may provide a different picture. Here, we exploited label-free quantitative mass spectrometry to compare and identify differences in primary human DC subset proteins. Moreover, we integrated these proteomic data with existing mRNA data to derive robust cell-specific expression signatures with more than 400 differentially expressed proteins between subsets, forming a solid basis for investigation of subset-specific functions. We illustrated this by extracting subset identification markers and by demonstrating that pDCs lack caspase-1 and only express low levels of other inflammasome-related proteins. In accordance, pDCs were incapable of interleukin (IL)-1β secretion in response to ATP. We present a comprehensive quantitative proteome comparison of primary human DC subsets Proteome comparison reveals many expression differences between DC subsets We provide a resource to derive markers and examine subset functional specialization pDCs lack caspase-1 and have a decreased inflammasome response
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27
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Murphy TL, Grajales-Reyes GE, Wu X, Tussiwand R, Briseño CG, Iwata A, Kretzer NM, Durai V, Murphy KM. Transcriptional Control of Dendritic Cell Development. Annu Rev Immunol 2015; 34:93-119. [PMID: 26735697 DOI: 10.1146/annurev-immunol-032713-120204] [Citation(s) in RCA: 294] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The dendritic cells (DCs) of the immune system function in innate and adaptive responses by directing activity of various effector cells rather than serving as effectors themselves. DCs and closely related myeloid lineages share expression of many surface receptors, presenting a challenge in distinguishing their unique in vivo functions. Recent work has taken advantage of unique transcriptional programs to identify and manipulate murine DCs in vivo. This work has assigned several nonredundant in vivo functions to distinct DC lineages, consisting of plasmacytoid DCs and several subsets of classical DCs that promote different immune effector modules in response to pathogens. In parallel, a correspondence between human and murine DC subsets has emerged, underlying structural similarities for the DC lineages between these species. Recent work has begun to unravel the transcriptional circuitry that controls the development and diversification of DCs from common progenitors in the bone marrow.
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Affiliation(s)
- Theresa L Murphy
- Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, Missouri 63110;
| | - Gary E Grajales-Reyes
- Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, Missouri 63110;
| | - Xiaodi Wu
- Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, Missouri 63110;
| | - Roxane Tussiwand
- Department of Biomedicine, University of Basel, 4058 Basel, Switzerland
| | - Carlos G Briseño
- Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, Missouri 63110;
| | - Arifumi Iwata
- Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, Missouri 63110;
| | - Nicole M Kretzer
- Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, Missouri 63110;
| | - Vivek Durai
- Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, Missouri 63110;
| | - Kenneth M Murphy
- Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, Missouri 63110; .,Howard Hughes Medical Institute, Washington University School of Medicine in St. Louis, Missouri 63110
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28
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Tao H, Ma X, Su G, Yin J, Xie X, Hu C, Chen Z, Tan D, Xu Z, Zheng Y, Liu H, He C, Mao ZJ, Yin H, Wang Z, Chang W, Gale RP, Chen Z, Wu D, Yin B. BCL11A expression in acute myeloid leukemia. Leuk Res 2015; 41:71-5. [PMID: 26707798 DOI: 10.1016/j.leukres.2015.12.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 12/01/2015] [Indexed: 12/17/2022]
Abstract
BACKGROUND BCL11A encodes a C2H2 type zinc-finger protein. During normal haematopoietic cell differentiation BCL11A expression is down-regulated. Data in mice suggest up-regulation of BCL11A is involved in the pathogenesis of myeloid leukaemias. BCL11A expression in persons with acute myeloid leukaemia (AML) is not systematically studied. OBJECTIVE Interrogate associations between BCL11A expression at diagnosis and clinical and laboratory valuables and outcomes in newly-diagnosed persons with AML. METHODS We determined BCL11A mRNA levels in bone marrow and blood mononuclear cells in 292 consecutive newly-diagnosed subjects with AML by reverse transcript and real-time polymerase chain reaction. Data were compared to mRNA levels in bone marrow cells of normals. RESULTS Subjects with BCL11A transcript levels at diagnosis exceeding the median value of 2.434 (±3.423 SD; 25th-75th inter-quartile range, 1.33-4.29) had higher WBC levels, a greater proportion of bone marrow myeloblasts, were more likely to be FAB M0 subtype, less likely to be FAB M3 subtype, more likely to be in the intermediate cytogenetic risk cohort, less likely to have a complex karyotype and more likely to have DNMT3A(R882) and FLT3-ITD mutations than subjects with transcript levels below the median value. In 89 subjects receiving conventional induction chemotherapy the complete remission rate was 54% (95% confidence interval [CI]; 33, 75%) in the lower BCL11A cohort and 65% (45, 85%; P=0.26) in the higher BCL11A cohort. 3 year survival was 33% (2, 65%) in the lower BCL11A cohort and 15% (0, 39%; P=0.35) in the high BCL11A cohort. CONCLUSION BCL11A transcript levels at diagnosis was significantly associated with several clinical and laboratory variables. There were also non-significant associations with complete remission rate and survival. These data suggest a possible role for BCL11A expression in AML biology.
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Affiliation(s)
- Huiquan Tao
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, Soochow University, Suzhou, Jiangsu province, China
| | - Xiao Ma
- The First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Suzhou, Jiangsu province, China
| | - Guangsong Su
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, Soochow University, Suzhou, Jiangsu province, China
| | - Jiawei Yin
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, Soochow University, Suzhou, Jiangsu province, China
| | - Xiaoli Xie
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, Soochow University, Suzhou, Jiangsu province, China
| | - Chenxi Hu
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, Soochow University, Suzhou, Jiangsu province, China
| | - Zheng Chen
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, Soochow University, Suzhou, Jiangsu province, China
| | - Dongming Tan
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, Soochow University, Suzhou, Jiangsu province, China
| | - Zhongjuan Xu
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, Soochow University, Suzhou, Jiangsu province, China
| | - Yanwen Zheng
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, Soochow University, Suzhou, Jiangsu province, China
| | - Hong Liu
- The First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Suzhou, Jiangsu province, China
| | - Chao He
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, Soochow University, Suzhou, Jiangsu province, China
| | - Zhengwei Jenny Mao
- Seattle Cancer Center Alliance, University of Washington Medical Center, Seattle, WA, USA
| | - Hongchao Yin
- Department of Pathology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, PR China
| | - Zhiwei Wang
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, Soochow University, Suzhou, Jiangsu province, China
| | - Weirong Chang
- The First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Suzhou, Jiangsu province, China
| | - Robert Peter Gale
- Haematology Research Centre, Division of Experimental Medicine, Department of Medicine, Imperial College London, London SW7 2AZ, UK
| | - Zixing Chen
- The First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Suzhou, Jiangsu province, China
| | - Depei Wu
- The First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Suzhou, Jiangsu province, China
| | - Bin Yin
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, Soochow University, Suzhou, Jiangsu province, China; Thrombosis and Hemostasis Key Lab of the Ministry of Health, Soochow University, Suzhou, Jiangsu province, China; Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu province, China.
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29
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Abstract
Plasmacytoid dendritic cells (pDCs) are a unique DC subset that specializes in the production of type I interferons (IFNs). pDCs promote antiviral immune responses and have been implicated in the pathogenesis of autoimmune diseases that are characterized by a type I IFN signature. However, pDCs can also induce tolerogenic immune responses. In this Review, we summarize recent progress in the field of pDC biology, focusing on the molecular mechanisms that regulate the development and functions of pDCs, the pathways involved in their sensing of pathogens and endogenous nucleic acids, their functions at mucosal sites, and their roles in infection, autoimmunity and cancer.
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30
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The Specification of Cortical Subcerebral Projection Neurons Depends on the Direct Repression of TBR1 by CTIP1/BCL11a. J Neurosci 2015; 35:7552-64. [PMID: 25972180 DOI: 10.1523/jneurosci.0169-15.2015] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The acquisition of distinct neuronal fates is fundamental for the function of the cerebral cortex. We find that the development of subcerebral projections from layer 5 neurons in the mouse neocortex depends on the high levels of expression of the transcription factor CTIP1; CTIP1 is coexpressed with CTIP2 in neurons that project to subcerebral targets and with SATB2 in those that project to the contralateral cortex. CTIP1 directly represses Tbr1 in layer 5, which appears as a critical step for the acquisition of the subcerebral fate. In contrast, lower levels of CTIP1 in layer 6 are required for TBR1 expression, which directs the corticothalamic fate. CTIP1 does not appear to play a critical role in the acquisition of the callosal projection fate in layer 5. These findings unravel a key step in the acquisition of cell fate for closely related corticofugal neurons and indicate that differential dosages of transcriptions factors are critical to specify different neuronal identities.
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31
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Vu Manh TP, Elhmouzi-Younes J, Urien C, Ruscanu S, Jouneau L, Bourge M, Moroldo M, Foucras G, Salmon H, Marty H, Quéré P, Bertho N, Boudinot P, Dalod M, Schwartz-Cornil I. Defining Mononuclear Phagocyte Subset Homology Across Several Distant Warm-Blooded Vertebrates Through Comparative Transcriptomics. Front Immunol 2015; 6:299. [PMID: 26150816 PMCID: PMC4473062 DOI: 10.3389/fimmu.2015.00299] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 05/25/2015] [Indexed: 12/24/2022] Open
Abstract
Mononuclear phagocytes are organized in a complex system of ontogenetically and functionally distinct subsets, that has been best described in mouse and to some extent in human. Identification of homologous mononuclear phagocyte subsets in other vertebrate species of biomedical, economic, and environmental interest is needed to improve our knowledge in physiologic and physio-pathologic processes, and to design intervention strategies against a variety of diseases, including zoonotic infections. We developed a streamlined approach combining refined cell sorting and integrated comparative transcriptomics analyses which revealed conservation of the mononuclear phagocyte organization across human, mouse, sheep, pigs and, in some respect, chicken. This strategy should help democratizing the use of omics analyses for the identification and study of cell types across tissues and species. Moreover, we identified conserved gene signatures that enable robust identification and universal definition of these cell types. We identified new evolutionarily conserved gene candidates and gene interaction networks for the molecular regulation of the development or functions of these cell types, as well as conserved surface candidates for refined subset phenotyping throughout species. A phylogenetic analysis revealed that orthologous genes of the conserved signatures exist in teleost fishes and apparently not in Lamprey.
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Affiliation(s)
- Thien-Phong Vu Manh
- UM2, Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université , Marseille , France ; U1104, INSERM , Marseille , France ; UMR7280, CNRS , Marseille , France
| | - Jamila Elhmouzi-Younes
- UR892, Virologie et Immunologie Moléculaires, INRA, Domaine de Vilvert , Jouy-en-Josas , France
| | - Céline Urien
- UR892, Virologie et Immunologie Moléculaires, INRA, Domaine de Vilvert , Jouy-en-Josas , France
| | - Suzana Ruscanu
- UR892, Virologie et Immunologie Moléculaires, INRA, Domaine de Vilvert , Jouy-en-Josas , France
| | - Luc Jouneau
- UR892, Virologie et Immunologie Moléculaires, INRA, Domaine de Vilvert , Jouy-en-Josas , France
| | - Mickaël Bourge
- IFR87 La Plante et son Environnement, IMAGIF CNRS , Gif-sur-Yvette , France
| | - Marco Moroldo
- CRB GADIE, Génétique Animale et Biologie Intégrative, INRA, Domaine de Vilvert , Jouy-en-Josas , France
| | - Gilles Foucras
- UMR1225, Université de Toulouse, INPT, ENVT , Toulouse , France ; UMR1225, Interactions Hôtes-Agents Pathogènes, INRA , Toulouse , France
| | - Henri Salmon
- UMR1282, Infectiologie et Santé Publique, INRA , Nouzilly , France ; UMR1282, Université François Rabelais de Tours , Tours , France
| | - Hélène Marty
- UMR1282, Infectiologie et Santé Publique, INRA , Nouzilly , France ; UMR1282, Université François Rabelais de Tours , Tours , France
| | - Pascale Quéré
- UMR1282, Infectiologie et Santé Publique, INRA , Nouzilly , France ; UMR1282, Université François Rabelais de Tours , Tours , France
| | - Nicolas Bertho
- UR892, Virologie et Immunologie Moléculaires, INRA, Domaine de Vilvert , Jouy-en-Josas , France
| | - Pierre Boudinot
- UR892, Virologie et Immunologie Moléculaires, INRA, Domaine de Vilvert , Jouy-en-Josas , France
| | - Marc Dalod
- UM2, Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université , Marseille , France ; U1104, INSERM , Marseille , France ; UMR7280, CNRS , Marseille , France
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The non-canonical Wnt pathway negatively regulates dendritic cell differentiation by inhibiting the expansion of Flt3(+) lymphocyte-primed multipotent precursors. Cell Mol Immunol 2015; 13:593-604. [PMID: 26051474 DOI: 10.1038/cmi.2015.39] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 04/16/2015] [Accepted: 04/16/2015] [Indexed: 12/23/2022] Open
Abstract
The differentiation of dendritic cells (DC) is affected by the aging process. However, the molecular mechanisms responsible for the alteration of DC development in aged mice have not been clarified. Recently, Wnt5a was reported to be an important aging-related molecule in hematopoietic systems. Here, we hypothesized that the increased expression of Wnt5a in aged hematopoietic precursors led to deficient DC differentiation in aged mice. The percentages and cell numbers of plasmacytoid DC (pDC) and CD172a(-)CD8α(+)conventional DC (cDC) were decreased in aged mice compared to young mice. Further analysis indicated that the hematopoietic precursors that gave rise to DC, including Flt3(+) lymphoid-primed multipotent precursors (LMPP), common lymphoid progenitors (CLP) and common DC precursors (CDP), were all decreased in the bone marrow of aged mice. Overexpression of Wnt5a in hematopoietic precursors strongly affected the differentiation of cDC and pDC in vivo. Treatment of hematopoietic stem cells (HSC) with Wnt5a led to a significant decrease in the differentiation of the LMPP, CLP and CDP populations that was similar to the decrease observed in the bone marrow (BM) HSC of aged mice. Molecular studies demonstrated that Wnt5a negatively regulated the expression of an array of genes important for DC differentiation, including Flt3, Gfi-1, Ikaros, Bcl11a, and IL-7R, by activating the Wnt5a-Cdc42 pathway. Finally, we rejuvenated DC differentiation from aged precursors by blocking the non-canonical Wnt pathway. Our study identified the key roles of the non-canonical Wnt pathway in DC differentiation and DC aging.
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Vu Manh TP, Bertho N, Hosmalin A, Schwartz-Cornil I, Dalod M. Investigating Evolutionary Conservation of Dendritic Cell Subset Identity and Functions. Front Immunol 2015; 6:260. [PMID: 26082777 PMCID: PMC4451681 DOI: 10.3389/fimmu.2015.00260] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 05/11/2015] [Indexed: 12/14/2022] Open
Abstract
Dendritic cells (DCs) were initially defined as mononuclear phagocytes with a dendritic morphology and an exquisite efficiency for naïve T-cell activation. DC encompass several subsets initially identified by their expression of specific cell surface molecules and later shown to excel in distinct functions and to develop under the instruction of different transcription factors or cytokines. Very few cell surface molecules are expressed in a specific manner on any immune cell type. Hence, to identify cell types, the sole use of a small number of cell surface markers in classical flow cytometry can be deceiving. Moreover, the markers currently used to define mononuclear phagocyte subsets vary depending on the tissue and animal species studied and even between laboratories. This has led to confusion in the definition of DC subset identity and in their attribution of specific functions. There is a strong need to identify a rigorous and consensus way to define mononuclear phagocyte subsets, with precise guidelines potentially applicable throughout tissues and species. We will discuss the advantages, drawbacks, and complementarities of different methodologies: cell surface phenotyping, ontogeny, functional characterization, and molecular profiling. We will advocate that gene expression profiling is a very rigorous, largely unbiased and accessible method to define the identity of mononuclear phagocyte subsets, which strengthens and refines surface phenotyping. It is uniquely powerful to yield new, experimentally testable, hypotheses on the ontogeny or functions of mononuclear phagocyte subsets, their molecular regulation, and their evolutionary conservation. We propose defining cell populations based on a combination of cell surface phenotyping, expression analysis of hallmark genes, and robust functional assays, in order to reach a consensus and integrate faster the huge but scattered knowledge accumulated by different laboratories on different cell types, organs, and species.
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Affiliation(s)
- Thien-Phong Vu Manh
- UM2, Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University , Marseille , France ; U1104, Institut National de la Santé et de la Recherche Médicale (INSERM) , Marseille , France ; UMR7280, Centre National de la Recherche Scientifique (CNRS) , Marseille , France
| | - Nicolas Bertho
- Virologie et Immunologie Moléculaires UR892, Institut National de la Recherche Agronomique , Jouy-en-Josas , France
| | - Anne Hosmalin
- INSERM U1016, Institut Cochin , Paris , France ; CNRS UMR8104 , Paris , France ; Université Paris Descartes , Paris , France ; Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Cochin , Paris , France
| | - Isabelle Schwartz-Cornil
- Virologie et Immunologie Moléculaires UR892, Institut National de la Recherche Agronomique , Jouy-en-Josas , France
| | - Marc Dalod
- UM2, Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University , Marseille , France ; U1104, Institut National de la Santé et de la Recherche Médicale (INSERM) , Marseille , France ; UMR7280, Centre National de la Recherche Scientifique (CNRS) , Marseille , France
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Tallmadge RL, Shen L, Tseng CT, Miller SC, Barry J, Felippe MJB. Bone marrow transcriptome and epigenome profiles of equine common variable immunodeficiency patients unveil block of B lymphocyte differentiation. Clin Immunol 2015; 160:261-76. [PMID: 25988861 DOI: 10.1016/j.clim.2015.05.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 05/06/2015] [Accepted: 05/08/2015] [Indexed: 12/30/2022]
Abstract
Common variable immunodeficiency (CVID) is a late-onset humoral deficiency characterized by B lymphocyte dysfunction or loss, decreased immunoglobulin production, and recurrent bacterial infections. CVID is the most frequent human primary immunodeficiency but still presents challenges in the understanding of its etiology and treatment. CVID in equine patients manifests with a natural impairment of B lymphocyte differentiation, and is a unique model to identify genetic and epigenetic mechanisms of disease. Bone marrow transcriptome analyses revealed decreased expression of genes indicative of the pro-B cell differentiation stage, importantly PAX5 (p≤0.023). We hypothesized that aberrant epigenetic regulation caused PAX5 gene silencing, resulting in the late-onset and non-familial manifestation of CVID. A significant increase in PAX5 enhancer region methylation was identified in equine CVID patients by genome-wide reduced-representation bisulfite sequencing and bisulfite PCR sequencing (p=0.000). Thus, we demonstrate that integrating transcriptomics and epigenetics in CVID enlightens potential mechanisms of dysfunctional B lymphopoiesis or function.
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Affiliation(s)
- Rebecca L Tallmadge
- Equine Immunology Laboratory, Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Lishuang Shen
- Cornell Mammalian Cell Reprogramming Core, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Chia T Tseng
- Equine Immunology Laboratory, Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Steven C Miller
- Equine Immunology Laboratory, Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Jay Barry
- Cornell Statistical Consulting Unit, Cornell University, Ithaca, NY 14853, USA
| | - M Julia B Felippe
- Equine Immunology Laboratory, Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.
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Chistiakov DA, Orekhov AN, Sobenin IA, Bobryshev YV. Plasmacytoid dendritic cells: development, functions, and role in atherosclerotic inflammation. Front Physiol 2014; 5:279. [PMID: 25120492 PMCID: PMC4110479 DOI: 10.3389/fphys.2014.00279] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 07/08/2014] [Indexed: 12/21/2022] Open
Abstract
Plasmacytoid dendritic cells (pDCs) are a specialized subset of DCs that links innate and adaptive immunity. They sense viral and bacterial pathogens and release high levels of Type I interferons (IFN-I) in response to infection. pDCs were shown to contribute to inflammatory responses in the steady state and in pathology. In atherosclerosis, pDCs are involved in priming vascular inflammation and atherogenesis through production of IFN-I and chemokines that attract inflammatory cells to inflamed sites. pDCs also contribute to the proinflammatory activation of effector T cells, cytotoxic T cells, and conventional DCs. However, tolerogenic populations of pDCs are found that suppress atherosclerosis-associated inflammation through down-regulation of function and proliferation of proinflammatory T cell subsets and induction of regulatory T cells with potent immunomodulatory properties. Notably, atheroprotective tolerogenic DCs could be induced by certain self-antigens or bacterial antigens that suggests for great therapeutic potential of these DCs for development of DC-based anti-atherogenic vaccines.
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Affiliation(s)
- Dimitry A. Chistiakov
- Department of Medical Nanobiotechnology, Pirogov Russian State Medical UniversityMoscow, Russia
| | - Alexander N. Orekhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical SciencesMoscow, Russia
- Institute for Atherosclerosis Research, Skolkovo Innovative CenterMoscow, Russia
| | - Igor A. Sobenin
- Institute for Atherosclerosis Research, Skolkovo Innovative CenterMoscow, Russia
- Laboratory of Medical Genetics, Russian Cardiology Research and Production ComplexMoscow, Russia
| | - Yuri V. Bobryshev
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Medical SciencesMoscow, Russia
- Faculty of Medicine, University of New South WalesSydney, NSW, Australia
- School of Medicine, University of Western SydneyCampbelltown, NSW, Australia
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Abstract
The plasmacytoid dendritic cell (pDC) is vital to the coordinated action of innate and adaptive immunity. pDC development has not been unequivocally traced, nor has its transcriptional regulatory network been fully clarified. Here we confirm an essential requirement for the BCL11A transcription factor in fetal pDC development, and demonstrate this lineage-specific requirement in the adult organism. Furthermore, we identify BCL11A gene targets and provide a molecular mechanism for its action in pDC commitment. Embryonic germ-line deletion of Bcl11a revealed an absolute cellular, molecular, and functional absence of pDCs in fetal mice. In adults, deletion of Bcl11a in hematopoietic stem cells resulted in perturbed yet continued generation of progenitors, loss of downstream pDC and B-cell lineages, and persisting myeloid, conventional dendritic, and T-cell lineages. Challenge with virus resulted in a marked reduction of antiviral response in conditionally deleted adults. Genome-wide analyses of BCL11A DNA binding and expression revealed that BCL11A regulates transcription of E2-2 and other pDC differentiation modulators, including ID2 and MTG16. Our results identify BCL11A as an essential, lineage-specific factor that regulates pDC development, supporting a model wherein differentiation into pDCs represents a primed "default" pathway for common dendritic cell progenitors.
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Abstract
T and B cells share a common somatic gene rearrangement mechanism for assembling the genes that code for their antigen receptors; they also have developmental pathways with many parallels. Shared usage of basic helix-loop-helix E proteins as transcriptional drivers underlies these common features. However, the transcription factor networks in which these E proteins are embedded are different both in membership and in architecture for T and B cell gene regulatory programs. These differences permit lineage commitment decisions to be made in different hierarchical orders. Furthermore, in contrast to B cell gene networks, the T cell gene network architecture for effector differentiation is sufficiently modular so that E protein inputs can be removed. Complete T cell-like effector differentiation can proceed without T cell receptor rearrangement or selection when E proteins are neutralized, yielding natural killer and other innate lymphoid cells.
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Affiliation(s)
- Ellen V Rothenberg
- Division of Biology, California Institute of Technology, Pasadena, California 91125;
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Abstract
T, B, and NK lymphocytes are generated from pluripotent hematopoietic stem cells through a successive series of lineage restriction processes. Many regulatory components, such as transcription factors, cytokines/cytokine receptors, and signal transduction molecules orchestrate cell fate specification and determination. In particular, transcription factors play a key role in regulating lineage-associated gene programs. Recent findings suggest the involvement of epigenetic factors in the maintenance of cell fate. Here, we review the early developmental events during lymphocyte lineage determination, focusing on the transcriptional networks and epigenetic regulation. Finally, we also discuss the developmental relationship between acquired and innate lymphoid cells.
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Affiliation(s)
- Tomokatsu Ikawa
- Laboratory for Immune Regeneration, RIKEN Center for Integrative Medical Sciences (IMS-RCAI), 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, 230-0045, Japan,
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