1
|
Patrick DM, de la Visitación N, Krishnan J, Chen W, Ormseth MJ, Stein CM, Davies SS, Amarnath V, Crofford LJ, Williams JM, Zhao S, Smart CD, Dikalov S, Dikalova A, Xiao L, Van Beusecum JP, Ao M, Fogo AB, Kirabo A, Harrison DG. Isolevuglandins disrupt PU.1-mediated C1q expression and promote autoimmunity and hypertension in systemic lupus erythematosus. JCI Insight 2022; 7:e136678. [PMID: 35608913 PMCID: PMC9310530 DOI: 10.1172/jci.insight.136678] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 05/18/2022] [Indexed: 11/24/2022] Open
Abstract
We describe a mechanism responsible for systemic lupus erythematosus (SLE). In humans with SLE and in 2 SLE murine models, there was marked enrichment of isolevuglandin-adducted proteins (isoLG adducts) in monocytes and dendritic cells. We found that antibodies formed against isoLG adducts in both SLE-prone mice and humans with SLE. In addition, isoLG ligation of the transcription factor PU.1 at a critical DNA binding site markedly reduced transcription of all C1q subunits. Treatment of SLE-prone mice with the specific isoLG scavenger 2-hydroxybenzylamine (2-HOBA) ameliorated parameters of autoimmunity, including plasma cell expansion, circulating IgG levels, and anti-dsDNA antibody titers. 2-HOBA also lowered blood pressure, attenuated renal injury, and reduced inflammatory gene expression uniquely in C1q-expressing dendritic cells. Thus, isoLG adducts play an essential role in the genesis and maintenance of systemic autoimmunity and hypertension in SLE.
Collapse
Affiliation(s)
- David M. Patrick
- Department of Veterans Affairs, Nashville, Tennessee, USA
- Division of Clinical Pharmacology and
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Néstor de la Visitación
- Division of Clinical Pharmacology and
- Department of Pharmacology, University of Granada, Granada, Spain
| | | | - Wei Chen
- Division of Clinical Pharmacology and
| | - Michelle J. Ormseth
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Division of Rheumatology and Immunology, Department of Medicine, and
| | - C. Michael Stein
- Division of Clinical Pharmacology and
- Division of Rheumatology and Immunology, Department of Medicine, and
| | | | | | | | | | - Shilin Zhao
- Vanderbilt Center for Quantitative Sciences, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Charles D. Smart
- Division of Clinical Pharmacology and
- Department of Molecular Physiology and Biophysics
| | | | | | | | - Justin P. Van Beusecum
- Ralph H. Johnson VA Medical Center and
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, USA
| | | | - Agnes B. Fogo
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | | | - David G. Harrison
- Division of Clinical Pharmacology and
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| |
Collapse
|
2
|
Nuñez-Reza KJ, Naldi A, Sánchez-Jiménez A, Leon-Apodaca AV, Santana MA, Thomas-Chollier M, Thieffry D, Medina-Rivera A. Logical modelling of in vitro differentiation of human monocytes into dendritic cells unravels novel transcriptional regulatory interactions. Interface Focus 2021; 11:20200061. [PMID: 34123352 PMCID: PMC8193469 DOI: 10.1098/rsfs.2020.0061] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2021] [Indexed: 12/13/2022] Open
Abstract
Dendritic cells (DCs) are the major specialized antigen-presenting cells, thereby connecting innate and adaptive immunity. Because of their role in establishing adaptive immunity, they constitute promising targets for immunotherapy. Monocytes can differentiate into DCs in vitro in the presence of colony-stimulating factor 2 (CSF2) and interleukin 4 (IL4), activating four signalling pathways (MAPK, JAK/STAT, NFKB and PI3K). However, the downstream transcriptional programme responsible for DC differentiation from monocytes (moDCs) remains unknown. By analysing the scientific literature on moDC differentiation, we established a preliminary logical model that helped us identify missing information regarding the activation of genes responsible for this differentiation, including missing targets for key transcription factors (TFs). Using ChIP-seq and RNA-seq data from the Blueprint consortium, we defined active and inactive promoters, together with differentially expressed genes in monocytes, moDCs and macrophages, which correspond to an alternative cell fate. We then used this functional genomic information to predict novel targets for previously identified TFs. By integrating this information, we refined our model and recapitulated the main established facts regarding moDC differentiation. Prospectively, the resulting model should be useful to develop novel immunotherapies targeting moDCs.
Collapse
Affiliation(s)
- Karen J Nuñez-Reza
- Laboratorio Internacional de Investigación sobre el Genoma Humano, Universidad Nacional Autónoma de México, Juriquilla, México
| | - Aurélien Naldi
- Computational Systems Biology team, Institut de Biologie de l'École Normale Supérieure, Inserm, CNRS, Université PSL, Paris, France
| | - Arantza Sánchez-Jiménez
- Laboratorio Internacional de Investigación sobre el Genoma Humano, Universidad Nacional Autónoma de México, Juriquilla, México
| | - Ana V Leon-Apodaca
- Laboratorio Internacional de Investigación sobre el Genoma Humano, Universidad Nacional Autónoma de México, Juriquilla, México
| | - M Angélica Santana
- Centro de Investigación en Dinámica Celular (IICBA), Universidad Autónoma del Estado de Morelos, Cuernavaca, México
| | - Morgane Thomas-Chollier
- Computational Systems Biology team, Institut de Biologie de l'École Normale Supérieure, Inserm, CNRS, Université PSL, Paris, France
| | - Denis Thieffry
- Computational Systems Biology team, Institut de Biologie de l'École Normale Supérieure, Inserm, CNRS, Université PSL, Paris, France
| | - Alejandra Medina-Rivera
- Laboratorio Internacional de Investigación sobre el Genoma Humano, Universidad Nacional Autónoma de México, Juriquilla, México
| |
Collapse
|
3
|
Inaba K, Yashiro T, Hiroki I, Watanabe R, Kasakura K, Nishiyama C. Dual Roles of PU.1 in the Expression of PD-L2: Direct Transactivation with IRF4 and Indirect Epigenetic Regulation. THE JOURNAL OF IMMUNOLOGY 2020; 205:822-829. [PMID: 32611724 DOI: 10.4049/jimmunol.1901008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 06/01/2020] [Indexed: 11/19/2022]
Abstract
PD-L2, which has been identified as a PD-1 ligand, is specifically expressed in dendritic cells (DCs) and macrophages. The transcription factors that determine the cell type-specific expression of PD-L2 are largely unknown, although PD-1 and its ligands, which have been shown to play important roles in T cell suppression, have been vigorously analyzed in the field of cancer immunology. To reveal the mechanism by which Pdcd1lg2 gene expression is regulated, we focused on DCs, which play key roles in innate and acquired immunity. The knockdown of the hematopoietic cell-specific transcription factors PU.1 and IRF4 decreased PD-L2 expression in GM-CSF-induced mouse bone marrow-derived DCs. Chromatin immunoprecipitation assays, luciferase assays, and electrophoretic mobility shift assays demonstrated that PU.1 and IRF4 bound directly to the Pdcd1lg2 gene via an Ets-IRF composite element sequence and coordinately transactivated the Pdcd1lg2 gene. Furthermore, PU.1 knockdown reduced the histone acetylation of the Pdcd1lg2 gene. The knockdown of the typical histone acetyltransferase p300, which has been reported to interact with PU.1, decreased the expression and H3K27 acetylation of the Pdcd1lg2 gene. GM-CSF stimulation upregulated the Pdcd1lg2 gene expression, which was accompanied by an increase in PU.1 binding and histone acetylation in Flt3L-generated mouse bone marrow-derived DCs. The involvement of PU.1, IRF4, and p300 were also observed in mouse splenic DCs. Overall, these results indicate that PU.1 positively regulates Pdcd1lg2 gene expression as a transactivator and an epigenetic regulator in DCs.
Collapse
Affiliation(s)
- Keito Inaba
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan; and.,Department of Computational Biology and Medical Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8568, Japan
| | - Takuya Yashiro
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan; and
| | - Ikumi Hiroki
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan; and
| | - Ryosuke Watanabe
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan; and
| | - Kazumi Kasakura
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan; and
| | - Chiharu Nishiyama
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan; and
| |
Collapse
|
4
|
Vega-López A, Pagadala NS, López-Tapia BP, Madera-Sandoval RL, Rosales-Cruz E, Nájera-Martínez M, Reyes-Maldonado E. Is related the hematopoietic stem cells differentiation in the Nile tilapia with GABA exposure? FISH & SHELLFISH IMMUNOLOGY 2019; 93:801-814. [PMID: 31419534 DOI: 10.1016/j.fsi.2019.08.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 08/07/2019] [Accepted: 08/12/2019] [Indexed: 06/10/2023]
Abstract
The signaling mediated by small non-proteinogenic molecules, which probably have the capacity to serve as a bridge amongst complex systems is one of the most exiting challenges for the study. In the current report, stem cells differentiation of the immune system in Nile tilapia treated with sub-basal doses of GABA evaluated as c-kit+ and Sca-1+ cells disappearance on pronephros, thymus, spleen and peripheral blood mononuclear cells by flow cytometry was assessed. Explanation of biological response was performed by molecular docking approach and multiparametric analysis. Stem cell differentiation depends on a delicate balance of negative and positive interactions of this neurotransmitter with receptors and transcription factors involved in this process. This in turn depends on the type of interaction with hematopoietic niche to differentiate into primordial, early or late hematopoiesis as well as from the dose delivery. In fish treated with the low doses of GABA (0.1% over basal value) primordial hematopoiesis is regulated by interaction of glutamate (Glu) with the Ly-6 antigen. Early hematopoiesis was influenced by the bond of GABA near or adjacent to turns of FLTR3-Ig-IV domain. During late hematopoiesis, negative regulation by structural modifications on PU.1/IRF-4 complex, IL-7Rα and GM-CSFR mainly prevails. Results of molecular docking were in agreement with the percentages of the main blood cells lineages estimated in pronephros by flow cytometry. Current study provides the first evidences about the role of inhibitory and excitatory neurotransmitters such as GABA and Glu, respectively with the most transcriptional factors and receptors involved on hematopoiesis in adult Nile tilapia.
Collapse
Affiliation(s)
- Armando Vega-López
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Laboratorio de Toxicología Ambiental, Av. Wilfrido Massieu S/n, Unidad Profesional Zacatenco, México, CP 07738, Mexico.
| | | | - Brenda P López-Tapia
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Laboratorio de Toxicología Ambiental, Av. Wilfrido Massieu S/n, Unidad Profesional Zacatenco, México, CP 07738, Mexico
| | - Ruth L Madera-Sandoval
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Laboratorio de Toxicología Ambiental, Av. Wilfrido Massieu S/n, Unidad Profesional Zacatenco, México, CP 07738, Mexico
| | - Erika Rosales-Cruz
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Laboratorio de Citología, Carpio y Plan de Ayala S/n, Casco de Santo Tomás, México, CP 11340, Mexico
| | - Minerva Nájera-Martínez
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Laboratorio de Toxicología Ambiental, Av. Wilfrido Massieu S/n, Unidad Profesional Zacatenco, México, CP 07738, Mexico
| | - Elba Reyes-Maldonado
- Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Laboratorio de Citología, Carpio y Plan de Ayala S/n, Casco de Santo Tomás, México, CP 11340, Mexico
| |
Collapse
|
5
|
Yashiro T, Takeuchi H, Nakamura S, Tanabe A, Hara M, Uchida K, Okumura K, Kasakura K, Nishiyama C. PU.1 plays a pivotal role in dendritic cell migration from the periphery to secondary lymphoid organs via regulating CCR7 expression. FASEB J 2019; 33:11481-11491. [PMID: 31314592 DOI: 10.1096/fj.201900379rr] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
C-C chemokine receptor type 7 (CCR7) is essential for migration of dendritic cells (DCs) to draining lymph nodes. PU.1/Spi1 is a transcription factor playing a critical role in the gene regulation of DCs. PU.1 knockdown decreased the expression of CCR7 in bone marrow-derived DCs and subsequently attenuated migration in vitro and in vivo. Reporter assays, EMSA, and chromatin immunoprecipitation assays revealed that PU.1 binds to the most proximal Ets motif of the Ccr7 promoter, which is involved in transcriptional activation. The CCR7 expression level, which was higher in the programmed cell death 1 ligand 2 (PD-L2)+ population than in the PD-L2- population and was markedly suppressed by TGF-β treatment, coincided with the binding level of PU.1 to the Ccr7 promoter. The PU.1 binding level in CCR7high mesenteric lymph nodes DCs was higher than in other DC subtypes. The involvement of PU.1 in the expression of the CCR7 gene was also observed in human DCs. We conclude that PU.1 plays a pivotal role in DC migration by transactivating the CCR7 gene via the Ets motif in the promoter in both humans and mice.-Yashiro, T., Takeuchi, H., Nakamura, S., Tanabe, A., Hara, M., Uchida, K., Okumura, K., Kasakura, K., Nishiyama, C. PU.1 plays a pivotal role in dendritic cell migration from the periphery to secondary lymphoid organs via regulating CCR7 expression.
Collapse
Affiliation(s)
- Takuya Yashiro
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo, Japan.,Atopy Research Center, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiromi Takeuchi
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo, Japan
| | - Shusuke Nakamura
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo, Japan
| | - Atsushi Tanabe
- Atopy Research Center, Juntendo University School of Medicine, Tokyo, Japan
| | - Mutsuko Hara
- Atopy Research Center, Juntendo University School of Medicine, Tokyo, Japan
| | - Koichiro Uchida
- Atopy Research Center, Juntendo University School of Medicine, Tokyo, Japan
| | - Ko Okumura
- Atopy Research Center, Juntendo University School of Medicine, Tokyo, Japan
| | - Kazumi Kasakura
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo, Japan.,Atopy Research Center, Juntendo University School of Medicine, Tokyo, Japan
| | - Chiharu Nishiyama
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo, Japan.,Atopy Research Center, Juntendo University School of Medicine, Tokyo, Japan
| |
Collapse
|
6
|
Zhu H, Zhang L, Wu Y, Dong B, Guo W, Wang M, Yang L, Fan X, Tang Y, Liu N, Lei X, Wu H. T-ALL leukemia stem cell 'stemness' is epigenetically controlled by the master regulator SPI1. eLife 2018; 7:38314. [PMID: 30412053 PMCID: PMC6251627 DOI: 10.7554/elife.38314] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 11/09/2018] [Indexed: 12/17/2022] Open
Abstract
Leukemia stem cells (LSCs) are regarded as the origins and key therapeutic targets of leukemia, but limited knowledge is available on the key determinants of LSC 'stemness'. Using single-cell RNA-seq analysis, we identify a master regulator, SPI1, the LSC-specific expression of which determines the molecular signature and activity of LSCs in the murine Pten-null T-ALL model. Although initiated by PTEN-controlled β-catenin activation, Spi1 expression and LSC 'stemness' are maintained by a β-catenin-SPI1-HAVCR2 regulatory circuit independent of the leukemogenic driver mutation. Perturbing any component of this circuit either genetically or pharmacologically can prevent LSC formation or eliminate existing LSCs. LSCs lose their 'stemness' when Spi1 expression is silenced by DNA methylation, but Spi1 expression can be reactivated by 5-AZ treatment. Importantly, similar regulatory mechanisms may be also present in human T-ALL.
Collapse
Affiliation(s)
- Haichuan Zhu
- The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.,Beijing Advanced Innovation Center for Genomics, Peking University, Beijing, China
| | - Liuzhen Zhang
- The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.,Beijing Advanced Innovation Center for Genomics, Peking University, Beijing, China
| | - Yilin Wu
- The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.,Beijing Advanced Innovation Center for Genomics, Peking University, Beijing, China
| | - Bingjie Dong
- The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.,Beijing Advanced Innovation Center for Genomics, Peking University, Beijing, China
| | - Weilong Guo
- The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.,Beijing Advanced Innovation Center for Genomics, Peking University, Beijing, China
| | - Mei Wang
- The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.,Beijing Advanced Innovation Center for Genomics, Peking University, Beijing, China
| | - Lu Yang
- The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.,Beijing Advanced Innovation Center for Genomics, Peking University, Beijing, China
| | - Xiaoying Fan
- The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.,Beijing Advanced Innovation Center for Genomics, Peking University, Beijing, China
| | - Yuliang Tang
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.,Department of Chemical Biology, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Ningshu Liu
- Drug Discovery Oncology, Bayer Pharmaceuticals, Berlin, Germany
| | - Xiaoguang Lei
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.,Department of Chemical Biology, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Hong Wu
- The MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.,Beijing Advanced Innovation Center for Genomics, Peking University, Beijing, China
| |
Collapse
|
7
|
Yashiro T, Yamaguchi M, Watanuki Y, Kasakura K, Nishiyama C. The Transcription Factors PU.1 and IRF4 Determine Dendritic Cell-Specific Expression of RALDH2. THE JOURNAL OF IMMUNOLOGY 2018; 201:3677-3682. [PMID: 30413670 DOI: 10.4049/jimmunol.1800492] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 10/08/2018] [Indexed: 01/22/2023]
Abstract
RALDH2 expressed in dendritic cells (DCs) plays a critical role in the development of regulatory T cells in mesenteric lymph nodes. Despite the importance of RALDH2 in intestinal immunity, little is known about the mechanism of DC-specific expression of RALDH2. In the current study, we focused on the hematopoietic cell-specific transcription factors PU.1 and IRF4 as the determinants of Aldh1a2 gene expression. The mRNA level of Aldh1a2, and subsequently the enzyme activity, were decreased by knockdown of PU.1 and IRF4 in bone marrow-derived DCs (BMDCs) of BALB/c mice. Chromatin immunoprecipitation assays showed that PU.1 and IRF4 bound to the Aldh1a2 gene ∼2 kb upstream from the transcription start site in BMDCs. A reporter assay and an EMSA revealed that the Aldh1a2 promoter was synergistically transactivated by a heterodimer composed with PU.1 and IRF4 via the EICE motif at -1961/-1952 of the gene. The effect of small interfering RNAs for Spi1 and Irf4 and specific binding of PU.1 and IRF4 on the Aldh1a2 gene were also observed in DCs freshly isolated from spleen and mesenteric lymph nodes, respectively. GM-CSF stimulation upregulated the Aldh1a2 transcription in Flt3 ligand-generated BMDCs, in which the IRF4 expression and the PU.1 recruitment to the Aldh1a2 promoter were enhanced. We conclude that PU.1 and IRF4 are transactivators of the Aldh1a2 gene in vitro and ex vivo.
Collapse
Affiliation(s)
- Takuya Yashiro
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan
| | - Masaki Yamaguchi
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan
| | - Yumi Watanuki
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan
| | - Kazumi Kasakura
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan
| | - Chiharu Nishiyama
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan
| |
Collapse
|
8
|
Oda Y, Kasakura K, Fujigaki I, Kageyama A, Okumura K, Ogawa H, Yashiro T, Nishiyama C. The effect of PU.1 knockdown on gene expression and function of mast cells. Sci Rep 2018; 8:2005. [PMID: 29386516 PMCID: PMC5792452 DOI: 10.1038/s41598-018-19378-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 12/29/2017] [Indexed: 11/09/2022] Open
Abstract
PU.1 is a hematopoietic cell-specific transcription factor. In the current study, we investigated the role of PU.1 in the gene expression and the function of mouse mast cells (MCs) in vitro and in vivo. When PU.1 siRNA was introduced into bone marrow-derived MCs (BMMCs), IgE-mediated activation was reduced, and the Syk and FcεRIβ mRNA levels were significantly decreased. As the regulatory mechanism of the Syk gene is largely unknown, we performed promoter analysis and found that PU.1 transactivated the Syk promoter through direct binding to a cis-element in the 5′-untranslated region. The involvement of PU.1 in the Syk promoter was also observed in mouse dendritic cells and human MCs, suggesting that the relationship between PU.1 and Syk is common in mammals and in hematopoietic lineages. When antigen was administrated intravenously after the transfusion of siRNA-transfected BMMCs in the mouse footpad, the footpad thickening was significantly suppressed by PU.1 knockdown. Finally, administration of the immunomodulator pomalidomide suppressed passive systemic anaphylaxis of mice. Taken together, these results indicate that PU.1 knockdown might be an efficacious strategy for the prevention of MC-mediated allergic diseases.
Collapse
Affiliation(s)
- Yoshihito Oda
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, Japan
| | - Kazumi Kasakura
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, Japan
| | - Izumi Fujigaki
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, Japan
| | - Azusa Kageyama
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, Japan
| | - Ko Okumura
- Atopy (Allergy) Research Center, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Hideoki Ogawa
- Atopy (Allergy) Research Center, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Takuya Yashiro
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, Japan
| | - Chiharu Nishiyama
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, Japan. .,Atopy (Allergy) Research Center, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan.
| |
Collapse
|