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Mamun MAA, Zhang Y, Zhao JY, Shen DD, Guo T, Zheng YC, Zhao LJ, Liu HM. LSD1: an emerging face in altering the tumor microenvironment and enhancing immune checkpoint therapy. J Biomed Sci 2023; 30:60. [PMID: 37525190 PMCID: PMC10391765 DOI: 10.1186/s12929-023-00952-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 07/17/2023] [Indexed: 08/02/2023] Open
Abstract
Dysregulation of various cells in the tumor microenvironment (TME) causes immunosuppressive functions and aggressive tumor growth. In combination with immune checkpoint blockade (ICB), epigenetic modification-targeted drugs are emerging as attractive cancer treatments. Lysine-specific demethylase 1 (LSD1) is a protein that modifies histone and non-histone proteins and is known to influence a wide variety of physiological processes. The dysfunction of LSD1 contributes to poor prognosis, poor patient survival, drug resistance, immunosuppression, etc., making it a potential epigenetic target for cancer therapy. This review examines how LSD1 modulates different cell behavior in TME and emphasizes the potential use of LSD1 inhibitors in combination with ICB therapy for future cancer research studies.
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Affiliation(s)
- M A A Mamun
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, China, State Key Laboratory of Esophageal Cancer Prevention and Treatment, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China
| | - Yu Zhang
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, China, State Key Laboratory of Esophageal Cancer Prevention and Treatment, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China
| | - Jin-Yuan Zhao
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, China, State Key Laboratory of Esophageal Cancer Prevention and Treatment, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China
| | - Dan-Dan Shen
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Key Laboratory of Endometrial Disease Prevention and Treatment Zhengzhou China, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Ting Guo
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, China, State Key Laboratory of Esophageal Cancer Prevention and Treatment, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China
| | - Yi-Chao Zheng
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, China, State Key Laboratory of Esophageal Cancer Prevention and Treatment, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China
| | - Li-Juan Zhao
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, China, State Key Laboratory of Esophageal Cancer Prevention and Treatment, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China.
- State Key Laboratory of Esophageal Cancer Prevention and Treatment, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, 450052, China.
| | - Hong-Min Liu
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, China, State Key Laboratory of Esophageal Cancer Prevention and Treatment, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, China.
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2
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Hui-Yuen J, Jiang K, Malkiel S, Eberhard BA, Walters H, Diamond B, Jarvis J. B lymphocytes in treatment-naive paediatric patients with lupus are epigenetically distinct from healthy children. Lupus Sci Med 2023; 10:10/1/e000921. [PMID: 37202122 DOI: 10.1136/lupus-2023-000921] [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: 02/23/2023] [Accepted: 05/04/2023] [Indexed: 05/20/2023]
Abstract
BACKGROUND SLE is likely triggered by gene-environment interactions. We have shown that most SLE-associated haplotypes encompass genomic regions enriched for epigenetic marks associated with enhancer function in lymphocytes, suggesting genetic risk is exerted through altered gene regulation. Data remain scarce on how epigenetic variance contributes to disease risk in paediatric SLE (pSLE). We aim to identify differences in epigenetically regulated chromatin architecture in treatment-naive patients with pSLE compared with healthy children. METHODS Using the assay for transposase-accessible chromatin with sequencing (ATACseq), we surveyed open chromatin in 10 treatment-naive patients with pSLE, with at least moderate disease severity, and 5 healthy children. We investigated whether regions of open chromatin unique to patients with pSLE demonstrate enrichment for specific transcriptional regulators, using standard computational approaches to identify unique peaks and a false discovery rate of <0.05. Further analyses for histone modification enrichment and variant calling were performed using bioinformatics packages in R and Linux. RESULTS We identified 30 139 differentially accessible regions (DAR) unique to pSLE B cells; 64.3% are more accessible in pSLE than healthy children. Many DAR are found in distal, intergenic regions and enriched for enhancer histone marks (p=0.027). B cells from adult patients with SLE contain more regions of inaccessible chromatin than those in pSLE. In pSLE B cells, 65.2% of the DAR are located within or near known SLE haplotypes. Further analysis revealed enrichment of transcription factor binding motifs within these DAR that may regulate genes involved in pro-inflammatory responses and cellular adhesion. CONCLUSIONS We demonstrate an epigenetically distinct profile in pSLE B cells when compared with healthy children and adults with lupus, indicating that pSLE B cells are predisposed for disease onset/development. Increased chromatin accessibility in non-coding genomic regions controlling activation of inflammation suggest that transcriptional dysregulation by regulatory elements controlling B cell activation plays an important role in pSLE pathogenesis.
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Affiliation(s)
- Joyce Hui-Yuen
- Pediatric Rheumatology, Northwell Health, Lake Success, New York, USA
- Pediatrics, Hofstra Northwell School of Medicine at Hofstra University, Hempstead, New York, USA
- Center for Autoimmune, Musculoskeletal, and Hematopoietic Diseases Research, The Feinstein Institutes for Medical Research, Manhasset, New York, USA
| | - Kaiyu Jiang
- Pediatrics, University at Buffalo School of Medicine and Biomedical Sciences, Buffalo, New York, USA
| | - Susan Malkiel
- Center for Autoimmune, Musculoskeletal, and Hematopoietic Diseases Research, The Feinstein Institutes for Medical Research, Manhasset, New York, USA
| | - Barbara Anne Eberhard
- Pediatric Rheumatology, Northwell Health, Lake Success, New York, USA
- Pediatrics, Hofstra Northwell School of Medicine at Hofstra University, Hempstead, New York, USA
| | - Heather Walters
- Pediatric Rheumatology, Northwell Health, Lake Success, New York, USA
- Pediatrics, Hofstra Northwell School of Medicine at Hofstra University, Hempstead, New York, USA
| | - Betty Diamond
- Center for Autoimmune, Musculoskeletal, and Hematopoietic Diseases Research, The Feinstein Institutes for Medical Research, Manhasset, New York, USA
| | - James Jarvis
- Pediatrics, University at Buffalo School of Medicine and Biomedical Sciences, Buffalo, New York, USA
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3
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Li ASM, Homsi C, Bonneil E, Thibault P, Verreault A, Vedadi M. Histone H4K20 monomethylation enables recombinant nucleosome methylation by PRMT1 in vitro. BIOCHIMICA ET BIOPHYSICA ACTA. GENE REGULATORY MECHANISMS 2023; 1866:194922. [PMID: 36822575 DOI: 10.1016/j.bbagrm.2023.194922] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 02/23/2023]
Abstract
Protein arginine methyltransferases (PRMTs) catalyze the transfer of methyl groups to specific arginine residues of histones and nonhistone proteins. There are nine members in the PRMT family (PRMT1 to PRMT9), and PRMT1 is a dominant member catalyzing majority of arginine methylation in the cell. However, none of the PRMTs is active with recombinant nucleosome as substrate in vitro. Here, we report the discovery of the first in class novel crosstalk between histone H4 lysine 20 (H4K20) monomethylation on nucleosome by SETD8 and histone H4 arginine 3 (H4R3) methylation by PRMT1 in vitro. Full kinetic characterization and mass spectrometry analysis indicated that PRMT1 is only active with recombinant nucleosomes monomethylated at H4K20 by SETD8. These data suggests that the level of activity of PRMT1 could potentially be regulated selectively by SETD8 in various pathways, providing a new approach for discovery of selective regulators of PRMT1 activity.
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Affiliation(s)
- Alice Shi Ming Li
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario M5S 1A8, Canada; Drug Discovery Program, Ontario Institute for Cancer Research, Toronto, Ontario, Canada; Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7, Canada
| | - Charles Homsi
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, Quebec H3C 3J7, Canada
| | - Eric Bonneil
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, Quebec H3C 3J7, Canada
| | - Pierre Thibault
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, Quebec H3C 3J7, Canada; Department of Chemistry, Université de Montréal, Montréal, Quebec H3C 3J7, Canada
| | - Alain Verreault
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, Quebec H3C 3J7, Canada; Département de Pathologie et Biologie Cellulaire, Université de Montréal, QC, Canada
| | - Masoud Vedadi
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario M5S 1A8, Canada; Drug Discovery Program, Ontario Institute for Cancer Research, Toronto, Ontario, Canada; Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L7, Canada.
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4
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Ma J, You D, Chen S, Fang N, Yi X, Wang Y, Lu X, Li X, Zhu M, Xue M, Tang Y, Wei X, Huang J, Zhu Y. Epigenetic association study uncovered H3K27 acetylation enhancers and dysregulated genes in high-fat-diet-induced nonalcoholic fatty liver disease in rats. Epigenomics 2022; 14:1523-1540. [PMID: 36851897 DOI: 10.2217/epi-2022-0362] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
Aim: To evaluate the regulatory landscape underlying the active enhancer marked by H3K27ac in high-fat diet (HFD)-induced nonalcoholic fatty liver disease (NAFLD) in rats. Materials & methods: H3K27ac chromatin immunoprecipitation and high-throughput RNA sequencing to construct regulatory profiles and transcriptome of liver from NAFLD rat model induced by HFD. De novo motif analysis for differential H3K27ac peaks. Functional enrichment, Kyoto Encyclopedia of Genes and Genomes pathway and protein-protein interaction network were examined for differential peak-genes. The mechanism was further verified by western blot, chromatin immunoprecipitation-quantitative PCR and real-time PCR. Results: A total of 1831 differential H3K27ac peaks were identified significantly correlating with transcription factors and target genes (CYP8B1, PLA2G12B, SLC27A5, CYP7A1 and APOC3) involved in lipid and energy homeostasis. Conclusion: Altered acetylation induced by HFD leads to the dysregulation of gene expression, further elucidating the epigenetic mechanism in the etiology of NAFLD.
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Affiliation(s)
- Jinhu Ma
- Department of Pathophysiology, Anhui Medical University, Hefei, 230032, China
| | - Dandan You
- Department of Pathophysiology, Anhui Medical University, Hefei, 230032, China
| | - Shuwen Chen
- Department of Pathophysiology, Anhui Medical University, Hefei, 230032, China
| | - Nana Fang
- Department of Pathophysiology, Anhui Medical University, Hefei, 230032, China
| | - Xinrui Yi
- Department of Pathophysiology, Anhui Medical University, Hefei, 230032, China
| | - Yi Wang
- Department of Pathophysiology, Anhui Medical University, Hefei, 230032, China
| | - Xuejin Lu
- Department of Pathophysiology, Anhui Medical University, Hefei, 230032, China
| | - Xinyu Li
- Department of Pathophysiology, Anhui Medical University, Hefei, 230032, China
| | - Meizi Zhu
- Department of Pathophysiology, Anhui Medical University, Hefei, 230032, China
| | - Min Xue
- Department of Pathophysiology, Anhui Medical University, Hefei, 230032, China
| | - Yunshu Tang
- Department of Pathophysiology, Anhui Medical University, Hefei, 230032, China
| | - Xiaohui Wei
- Department of Pathophysiology, Anhui Medical University, Hefei, 230032, China
| | - Jianzhen Huang
- College of Animal Science & Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Yaling Zhu
- Department of Pathophysiology, Anhui Medical University, Hefei, 230032, China
- Laboratory Animal Research Center, College of Basic Medical Science, Anhui Medical University, Hefei, 230032, China
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Friesen L, Kostlan R, Liu Q, Yu H, Zhu J, Lukacs N, Kim CH. Cutting Edge: The Expression of Transcription Inhibitor GFI1 Is Induced by Retinoic Acid to Rein in Th9 Polarization. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 209:1237-1242. [PMID: 36165199 PMCID: PMC9522314 DOI: 10.4049/jimmunol.2200328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 08/07/2022] [Indexed: 11/07/2022]
Abstract
IL-9, produced mainly by specialized T cells, mast cells, and group 2 innate lymphoid cells, regulates immune responses, including anti-helminth and allergic responses. Polarization of naive CD4 T cells into IL-9-producing T cells (Th9s) is induced by IL-4 and TGF-β1 or IL-1β. In this article, we report that the transcription factor growth factor-independent 1 transcriptional repressor (GFI1) plays a negative role in mouse Th9 polarization. Moreover, the expression of GFI1 is controlled by liganded RARα, allowing GFI1 to mediate the negative effect of retinoic acid on IL-9 expression. The Gfi1 gene has multiple RARα binding sites in the promoter region for recruiting nuclear coactivator steroid receptor coactivator-3 and p300 for histone epigenetic modifications in a retinoic acid-dependent manner. Retinoic acid-induced GFI1 binds the Il9 gene and suppresses its expression. Thus, GFI1 is a novel negative regulator of Il9 gene expression. The negative GFI1 pathway for IL-9 regulation provides a potential control point for Th9 activity.
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Affiliation(s)
- Leon Friesen
- Department of Pathology, University of Michigan School of Medicine, Ann Arbor, MI
- Mary H. Weiser Food Allergy Center, University of Michigan School of Medicine, Ann Arbor, MI
| | - Raymond Kostlan
- Mary H. Weiser Food Allergy Center, University of Michigan School of Medicine, Ann Arbor, MI
| | - Qingyang Liu
- Department of Pathology, University of Michigan School of Medicine, Ann Arbor, MI
- Mary H. Weiser Food Allergy Center, University of Michigan School of Medicine, Ann Arbor, MI
| | - Hao Yu
- Purdue University Center for Cancer Research, Purdue University, West Lafayette, IL
| | - Jinfang Zhu
- Molecular and Cellular Immunoregulation Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD; and
| | - Nicholas Lukacs
- Department of Pathology, University of Michigan School of Medicine, Ann Arbor, MI
- Mary H. Weiser Food Allergy Center, University of Michigan School of Medicine, Ann Arbor, MI
| | - Chang H Kim
- Department of Pathology, University of Michigan School of Medicine, Ann Arbor, MI;
- Mary H. Weiser Food Allergy Center, University of Michigan School of Medicine, Ann Arbor, MI
- Rogel Cancer Center, University of Michigan School of Medicine, Ann Arbor, MI
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Vorwerk J, Sun K, Frank D, Neumann F, Hüve J, Budde PM, Liu L, Xie X, Patnana PK, Ahmed HMM, Opalka B, Lenz G, Jayavelu AK, Khandanpour C. Presence of the GFI1-36N single nucleotide polymorphism enhances the response of MLL-AF9 leukemic cells to CDK4/6 inhibition. Front Oncol 2022; 12:903691. [PMID: 36003783 PMCID: PMC9393725 DOI: 10.3389/fonc.2022.903691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 07/04/2022] [Indexed: 11/13/2022] Open
Abstract
The zinc finger protein Growth Factor Independence 1 (GFI1) acts as a transcriptional repressor regulating differentiation of myeloid and lymphoid cells. A single nucleotide polymorphism of GFI1, GFI1-36N, has a prevalence of 7% in healthy Caucasians and 15% in acute myeloid leukemia (AML) patients, hence most probably predisposing to AML. One reason for this is that GFI1-36N differs from the wildtype form GFI1-36S regarding its ability to induce epigenetic changes resulting in a derepression of oncogenes. Using proteomics, immunofluorescence, and immunoblotting we have now gained evidence that murine GFI1-36N leukemic cells exhibit a higher protein level of the pro-proliferative protein arginine N-methyltransferase 5 (PRMT5) as well as increased levels of the cell cycle propagating cyclin-dependent kinases 4 (CDK4) and 6 (CDK6) leading to a faster proliferation of GFI1-36N leukemic cells in vitro. As a therapeutic approach, we subsequently treated leukemic GFI1-36S and GFI1-36N cells with the CDK4/6 inhibitor palbociclib and observed that GFI1-36N leukemic cells were more susceptible to this treatment. The findings suggest that presence of the GFI1-36N variant increases proliferation of leukemic cells and could possibly be a marker for a specific subset of AML patients sensitive to CDK4/6 inhibitors such as palbociclib.
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Affiliation(s)
- Jan Vorwerk
- Department of Medicine A, Hematology, Hemostaseology, Oncology, and Pneumology, University Hospital Münster, Münster, Germany
| | - Kaiyan Sun
- Department of Medicine A, Hematology, Hemostaseology, Oncology, and Pneumology, University Hospital Münster, Münster, Germany
| | - Daria Frank
- Department of Medicine A, Hematology, Hemostaseology, Oncology, and Pneumology, University Hospital Münster, Münster, Germany
| | - Felix Neumann
- Fluorescence Microscopy Facility Münster, Institute of Medical Physics and Biophysics, University of Münster, Münster, Germany
- Evorion Biotechnologies GmbH, Münster, Germany
| | - Jana Hüve
- Fluorescence Microscopy Facility Münster, Institute of Medical Physics and Biophysics, University of Münster, Münster, Germany
| | - Paulina Marie Budde
- Department of Medicine A, Hematology, Hemostaseology, Oncology, and Pneumology, University Hospital Münster, Münster, Germany
| | - Longlong Liu
- Department of Medicine A, Hematology, Hemostaseology, Oncology, and Pneumology, University Hospital Münster, Münster, Germany
| | - Xiaoqing Xie
- Department of Medicine A, Hematology, Hemostaseology, Oncology, and Pneumology, University Hospital Münster, Münster, Germany
| | - Pradeep Kumar Patnana
- Department of Medicine A, Hematology, Hemostaseology, Oncology, and Pneumology, University Hospital Münster, Münster, Germany
| | - Helal Mohammed Mohammed Ahmed
- Department of Medicine A, Hematology, Hemostaseology, Oncology, and Pneumology, University Hospital Münster, Münster, Germany
| | - Bertram Opalka
- Department of Hematology and Stem Cell Transplantation, West German Cancer Center (WTZ), University Hospital Essen, Essen, Germany
| | - Georg Lenz
- Department of Medicine A, Hematology, Hemostaseology, Oncology, and Pneumology, University Hospital Münster, Münster, Germany
| | - Ashok Kumar Jayavelu
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Munich, Germany
- Molecular Medicine Partnership Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
- Department of Pediatric Oncology, Hematology, and Immunology, Heidelberg University Hospital, Heidelberg, Germany
- Hopp Children’s Cancer Center Heidelberg (KiTZ), Heidelberg, Germany
- Clinical Cooperation Unit Pediatric Leukemia, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Cyrus Khandanpour
- Department of Medicine A, Hematology, Hemostaseology, Oncology, and Pneumology, University Hospital Münster, Münster, Germany
- Department of Hematology and Oncology, University Hospital of Schleswig-Holstein, University of Lübeck, Lübeck, Germany
- *Correspondence: Cyrus Khandanpour,
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7
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Zhang Z, Cai J, Hao S, Li C, Chen J, Li T, Feng X. Transcriptomic analysis of spleen B cell revealed the molecular basis of bursopentin on B cell differentiation. Vet Res 2022; 53:109. [PMID: 36517897 PMCID: PMC9753308 DOI: 10.1186/s13567-022-01123-z] [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: 03/23/2022] [Accepted: 08/30/2022] [Indexed: 12/23/2022] Open
Abstract
The bursa of Fabricius, the acknowledged humoral immune organ unique to birds, plays a vital role in B cell development. Bursopentin (BP5) derived from the bursa is reported to induce the development and formation of B cells. However, the mechanism of BP5 on B cell differentiation is still unclear. In this paper, total B lymphocytes from mice immunized with H9N2 subtype AIV vaccine were stimulated with BP5. The results show that BP5 at the experimental dosages promoted B cell differentiation, including the total B cells, activated B cells, differentiated B cells, mature B cells and plasma cells. Then, the in vivo immune experiment proved that the percentages of activated and differentiated B cells from mice immunized with AIV vaccine and 0.25 mg/mL BP5 were increased. To investigate the molecular mechanism of BP5 on B cell differentiation, the gene expression profiles of B cells purified from the spleen cells of mice immunized with AIV vaccine and BP5 were detected following RNA sequencing technology. The results show that BP5 at 0.05 and 0.25 mg/mL induced the enrichment of various biological functions, and stimulated five common significant enrichment pathways in B cells from the immunized mice. Additionally, 120 and 59 differentially expressed genes (DEG) represented transcriptional factors in B cells following 0.05 and 0.25 mg/mL BP5 immunization, respectively. In summary, these results suggest that BP5 regulates various gene expression involved in regulation of B cell development, which provides the knowledge required for additional studies on B cell differentiation in response to bursal-derived peptides and also provides an important experimental basis for improving vaccine immunity.
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Affiliation(s)
- Ze Zhang
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Jiaxi Cai
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Shanshan Hao
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Chenfei Li
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Jiajing Chen
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Tongtong Li
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Xiuli Feng
- grid.27871.3b0000 0000 9750 7019Key Laboratory of Animal Microbiology of China’s Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China ,grid.27871.3b0000 0000 9750 7019MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
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8
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Stamos DB, Clubb LM, Mitra A, Chopp LB, Nie J, Ding Y, Das A, Venkataganesh H, Lee J, El-Khoury D, Li L, Bhandoola A, Bosselut R, Love PE. The histone demethylase Lsd1 regulates multiple repressive gene programs during T cell development. J Exp Med 2021; 218:e20202012. [PMID: 34726730 PMCID: PMC8570297 DOI: 10.1084/jem.20202012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 08/27/2021] [Accepted: 09/30/2021] [Indexed: 11/27/2022] Open
Abstract
Analysis of the transcriptional profiles of developing thymocytes has shown that T lineage commitment is associated with loss of stem cell and early progenitor gene signatures and the acquisition of T cell gene signatures. Less well understood are the epigenetic alterations that accompany or enable these transcriptional changes. Here, we show that the histone demethylase Lsd1 (Kdm1a) performs a key role in extinguishing stem/progenitor transcriptional programs in addition to key repressive gene programs during thymocyte maturation. Deletion of Lsd1 caused a block in late T cell development and resulted in overexpression of interferon response genes as well as genes regulated by the Gfi1, Bcl6, and, most prominently, Bcl11b transcriptional repressors in CD4+CD8+ thymocytes. Transcriptional overexpression in Lsd1-deficient thymocytes was not always associated with increased H3K4 trimethylation at gene promoters, indicating that Lsd1 indirectly affects the expression of many genes. Together, these results identify a critical function for Lsd1 in the epigenetic regulation of multiple repressive gene signatures during T cell development.
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Affiliation(s)
- Daniel B. Stamos
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Lauren M. Clubb
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Apratim Mitra
- Bioinformatics and Scientific Programing Core, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Laura B. Chopp
- Laboratory of Immune Cell Biology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Jia Nie
- Laboratory of Immune Cell Biology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Yi Ding
- Laboratory of Genome Integrity, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Arundhoti Das
- Laboratory of Genome Integrity, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Harini Venkataganesh
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Jan Lee
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Dalal El-Khoury
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - LiQi Li
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Avinash Bhandoola
- Laboratory of Genome Integrity, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Remy Bosselut
- Laboratory of Immune Cell Biology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Paul E. Love
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
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