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Dou L, Yan F, Pang J, Zheng D, Li D, Gao L, Wang L, Xu Y, Shi J, Wang Q, Zhou L, Shen N, Singh P, Wang L, Li Y, Gao Y, Liu T, Chen C, Al-Kali A, Litzow MR, Chi YI, Bode AM, Liu C, Huang H, Liu D, Marcucci G, Liu S, Yu L. Protein lysine 43 methylation by EZH1 promotes AML1-ETO transcriptional repression in leukemia. Nat Commun 2019; 10:5051. [PMID: 31699991 PMCID: PMC6838331 DOI: 10.1038/s41467-019-12960-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 10/11/2019] [Indexed: 11/10/2022] Open
Abstract
The oncogenic fusion protein AML1-ETO retains the ability of AML1 to interact with the enhancer core DNA sequences, but blocks AML1-dependent transcription. Previous studies have shown that post-translational modification of AML1-ETO may play a role in its regulation. Here we report that AML1-ETO-positive patients, with high histone lysine methyltransferase Enhancer of zeste homolog 1 (EZH1) expression, show a worse overall survival than those with lower EZH1 expression. EZH1 knockdown impairs survival and proliferation of AML1-ETO-expressing cells in vitro and in vivo. We find that EZH1 WD domain binds to the AML1-ETO NHR1 domain and methylates AML1-ETO at lysine 43 (Lys43). This requires the EZH1 SET domain, which augments AML1-ETO-dependent repression of tumor suppressor genes. Loss of Lys43 methylation by point mutation or domain deletion impairs AML1-ETO-repressive activity. These findings highlight the role of EZH1 in non-histone lysine methylation, indicating that cooperation between AML1-ETO and EZH1 and AML1-ETO site-specific lysine methylation promote AML1-ETO transcriptional repression in leukemia.
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Affiliation(s)
- Liping Dou
- Department of Hematology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, 100853, Beijing, China
- The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, MN, 55912, USA
| | - Fei Yan
- The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, MN, 55912, USA
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), International Research Center for Chemistry-Medicine Joint Innovation, College of Chemistry, Jilin University, 2699 Qianjin Street, 130012, Changchun, China
| | - Jiuxia Pang
- The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, MN, 55912, USA
| | - Dehua Zheng
- Department of Hepatology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, 100853, Beijing, China
| | - Dandan Li
- Department of Hematology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, 100853, Beijing, China
| | - Li Gao
- Department of Hematology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, 100853, Beijing, China
| | - Lijun Wang
- The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, MN, 55912, USA
| | - Yihan Xu
- Department of Hematology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, 100853, Beijing, China
| | - Jinlong Shi
- Department of Hematology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, 100853, Beijing, China
| | - Qian Wang
- Department of Hematology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, 100853, Beijing, China
| | - Lei Zhou
- Department of Hematology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, 100853, Beijing, China
| | - Na Shen
- The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, MN, 55912, USA
| | - Puja Singh
- The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, MN, 55912, USA
| | - Lili Wang
- Department of Hematology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, 100853, Beijing, China
| | - Yonghui Li
- Department of Hematology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, 100853, Beijing, China
| | - Yvchi Gao
- Annoroad Gene Technical Laboratory, 6 Kechuang road, 100176, Beijing, China
| | - Tao Liu
- Annoroad Gene Technical Laboratory, 6 Kechuang road, 100176, Beijing, China
| | - Chongjian Chen
- Annoroad Gene Technical Laboratory, 6 Kechuang road, 100176, Beijing, China
| | - Aref Al-Kali
- Division of Hematology, Mayo Clinic, 200 1st Street SW, Rochester, MN, 55905, USA
| | - Mark R Litzow
- Division of Hematology, Mayo Clinic, 200 1st Street SW, Rochester, MN, 55905, USA
| | - Young-In Chi
- The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, MN, 55912, USA
| | - Ann M Bode
- The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, MN, 55912, USA
| | - Chunhui Liu
- Haoshi Biotechnical Laboratory, 1 Pingshan First Road, 518055, Shenzhen, China
| | - Haojie Huang
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 1st Street SW, Rochester, MN, 55905, USA
| | - Daihong Liu
- Department of Hematology, Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, 100853, Beijing, China
| | - Guido Marcucci
- Department of Hematologic Malignancies Translational Science, City of Hope, 1500 East Duarte Road, Duarte, CA, 91010, USA
| | - Shujun Liu
- The Hormel Institute, University of Minnesota, 801 16th Avenue NE, Austin, MN, 55912, USA.
| | - Li Yu
- Department of Hematology-Oncology, International Cancer Center, Shenzhen University General Hospital, Shenzhen University Health Science Center, 1098 Xueyuan Ave, 518060, Shenzhen, China.
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Wang L, Liu N, Xue X, Zhou S. The Effect of Overexpression of the Enhancer of Zeste Homolog 1 (EZH1) Gene on Aristolochic Acid-Induced Injury in HK-2 Human Kidney Proximal Tubule Cells In Vitro. Med Sci Monit 2019; 25:801-810. [PMID: 30688289 PMCID: PMC6362760 DOI: 10.12659/msm.911611] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Background Acute kidney injury (AKI) involves the renal tubular epithelium. The enhancer of zeste homolog 1 (EZH1) gene has a role in cell development and differentiation. This study aimed to investigate the effect of overexpression of the EZH1 gene on aristolochic acid-induced injury in HK-2 human kidney proximal tubule epithelial cells in vitro. Material/Methods The HK-2 cells were cultured and treated with aristolochic acid and the effects of aristolochic acid-injury were evaluated using a cell counting kit-8 (CCK-8) assay. Overexpression of EZH1 used gene plasmid transfection into HK-2 cells. The cell apoptosis rate and levels of intracellular reactive oxygen species (ROS) were measured using flow cytometry. Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot were performed to determine the expressions of inflammatory cytokines including interleukin (IL)-1β, IL-6, tumor necrosis factor-α (TNF-α), apoptosis-related genes, and the downstream target genes of NF-κB signaling pathway, including NFKBIA, CXCL8, and cyclin D1. Results Aristolochic acid inhibited HK-2 cell viability, induced cell apoptosis, increased the levels of ROS and inflammatory cytokines, including IL-1β, IL-6, TNF-α, and activated the NF-κB pathway. Overexpression the EZH1 gene inhibited HK-2 cell apoptosis, reduced ROS levels, and down-regulated the expressions of IL-1β, IL-6, TNF-α, Bax and Cyt C mRNA and protein, and increased the expressions of Bcl-2 and NFKBIA, CXCL8 and cyclin D1, indicating that overexpression of EZH1 suppressed NF-κB signaling in aristolochic acid-injured HK-2 cells. Conclusions Overexpression of EZH1 reduced HK-2 cell injury induced by aristolochic acid in vitro by inhibition of NF-κB signaling.
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Affiliation(s)
- Liping Wang
- Department of Emergency, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou, Jiangsu, China (mainland)
| | - Ning Liu
- Department of Critical Care Medicine, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou, Jiangsu, China (mainland)
| | - Xiaoyan Xue
- Department of Pharmacy, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou, Jiangsu, China (mainland)
| | - Shujun Zhou
- Department of Critical Care Medicine, The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou, Jiangsu, China (mainland)
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Arai D, Hayakawa K, Ohgane J, Hirosawa M, Nakao Y, Tanaka S, Shiota K. An epigenetic regulatory element of the Nodal gene in the mouse and human genomes. Mech Dev 2014; 136:143-54. [PMID: 25528267 DOI: 10.1016/j.mod.2014.12.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 12/12/2014] [Accepted: 12/15/2014] [Indexed: 01/28/2023]
Abstract
Nodal signaling plays critical roles during embryonic development. The Nodal gene is not expressed in adult tissues but is frequently activated in cancer cells, contributing to progression toward malignancy. Although several regulatory elements of the Nodal gene have been identified, the epigenetic mechanisms by which Nodal expression is regulated over the long term remain unclear. We found a region exhibiting dynamic changes in DNA methylation at approximately -3.0 kb to -0.4 kb upstream from the transcriptional start site (TSS) that we termed the epigenetic regulatory element (ERE). The ERE was unmethylated in mouse embryonic stem cells (mESCs) but became increasingly methylated in differentiated cells and tissues, concomitant with the downregulation of Nodal mRNA expression. In vitro reporter assays identified an Oct3/4 binding motif within the ERE, indicating that the ERE is responsible for the activation of Nodal in mESCs. Furthermore, the ERE was a target of differentiation-associated Polycomb silencing, and the chromatin condensed when mESCs differentiated to embryoid bodies (EBs). Pharmacological inhibition of PRC2 led to the reactivation of Nodal expression in EBs and mouse embryonic fibroblasts (MEFs). The ERE was also targeted by PRC2 in normal human cells. In NODAL-expressing human cancer cells, accumulation of EZH2 and trimethylation of H3K27 at the ERE were diminished. In conclusion, Nodal is epigenetically controlled through the ERE in the mouse embryo and human cells.
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Affiliation(s)
- Daisuke Arai
- Laboratory of Cellular Biochemistry, Department of Animal Resource Sciences/Veterinary Medical Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan; Laboratory of Chemical Biology, Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Koji Hayakawa
- Laboratory of Cellular Biochemistry, Department of Animal Resource Sciences/Veterinary Medical Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Jun Ohgane
- Laboratory of Genomic Function Engineering, Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-mita, Tama-ku, Kawasaki 214-8571, Japan
| | - Mitsuko Hirosawa
- Laboratory of Cellular Biochemistry, Department of Animal Resource Sciences/Veterinary Medical Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Yoichi Nakao
- Laboratory of Chemical Biology, Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Satoshi Tanaka
- Laboratory of Cellular Biochemistry, Department of Animal Resource Sciences/Veterinary Medical Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Kunio Shiota
- Laboratory of Cellular Biochemistry, Department of Animal Resource Sciences/Veterinary Medical Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
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Halstead AM, Wright CVE. Disrupting Foxh1-Groucho interaction reveals robustness of nodal-based embryonic patterning. Mech Dev 2014; 136:155-65. [PMID: 25511461 DOI: 10.1016/j.mod.2014.12.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 12/02/2014] [Accepted: 12/09/2014] [Indexed: 12/12/2022]
Abstract
The winged-helix transcription factor Foxh1 is an essential regulator of Nodal signaling during the key developmental processes of gastrulation, anterior-posterior (A-P) patterning, and the derivation of left-right (L-R) asymmetry. Current models have Foxh1 bound to phospho-Smad2/3 (pSmad2/3) as a central transcriptional activator for genes targeted by Nodal signaling including Nodal itself, the feedback inhibitor Lefty2, and the positive transcriptional effector Pitx2. However, the conserved Engrailed homology-1 (EH1) motif present in Foxh1 suggests that modulated interaction with Groucho (Grg) co-repressors would allow Foxh1 to function as a transcriptional switch, toggling between transcriptional on and off states via pSmad2-Grg protein-switching, to ensure the properly timed initiation and suppression, and/or amplitude, of expression of Nodal and its target genes. We minimally mutated the Foxh1 EH1 motif, creating a novel Foxh1(mEH1) allele to test directly the contribution of Foxh1-Grg-mediated repression on the transient, dynamic pattern of Nodal signaling in mice. All aspects of Nodal and its target gene expression in Foxh1(mEH1/mEH1) embryos were equivalent to wild type. A-P patterning and organ situs in homozygous embryos and adult mice were also unaffected. The finding that Foxh1-Grg-mediated repression is not essential for Nodal expression during mouse embryogenesis suggests that other regulators compensate for the loss of repressive regulatory input that is mediated by Grg interactions. We suggest that the pervasive inductive properties of Nodal signaling exist within the context of a strongly buffered regulatory system that contributes to resilience and accuracy of its dynamic expression pattern.
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Affiliation(s)
- Angela M Halstead
- Department of Cell and Developmental Biology, Program in Developmental Biology, Center for Stem Cell Biology, Vanderbilt University Medical School, 2213 Garland Ave., Nashville, TN 37232, United States
| | - Christopher V E Wright
- Department of Cell and Developmental Biology, Program in Developmental Biology, Center for Stem Cell Biology, Vanderbilt University Medical School, 2213 Garland Ave., Nashville, TN 37232, United States.
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