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Jiang H, Su W, Wang H, Luo C, Wang Y, Zhang L, Luo L, Lu Z, Shen D, Su G. DPY30 knockdown suppresses colorectal carcinoma progression via inducing Raf1/MST2-mediated apoptosis. Heliyon 2024; 10:e24807. [PMID: 38314299 PMCID: PMC10837565 DOI: 10.1016/j.heliyon.2024.e24807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 01/11/2024] [Accepted: 01/15/2024] [Indexed: 02/06/2024] Open
Abstract
Colorectal Carcinoma (CRC) is one of the most common malignant tumors of the digestive tract, with a high mortality rate. DPY30 is one of the core subunits of the histone methyltransferase complex, which was involved in many cancer processes. However, the role of DPY30 in the occurrence and progression of CRC remains unclear. In this study, we sought to evaluate the role and mechanism of DPY30 in CRC cells apoptosis. Here, we identified that knockdown of DPY30 significantly inhibited the HT29 and HCT116 cells proliferation in vitro. Moreover, the knockdown of DPY30 significantly increased the apoptosis rate and promoted the expression of apoptosis-related proteins in CRC cells. Meanwhile, DPY30 knockdown promoted CRC cells apoptosis through endogenous programmed death and in a caspase activation-dependent manner. Furthermore, RNA-seq analysis revealed that the action of DPY30 is closely related to the apoptosis biological processes, and screened its potential effectors Raf1. Mechanistically, DPY30 downregulation promotes MST2-induced apoptosis by inhibiting Raf1 transcriptional activity through histone H3 lysine 4 trimethylation (H3K4me3). In vivo experiments showed that DPY30 was correlated with Raf1 in nude mouse subcutaneous xenografts tissues significantly. Clinical colorectal specimens further confirmed that overexpression of DPY30 in malignant tissues was significantly correlated with Raf1 level. The vital role of the DPY30/Raf1/MST2 signaling axis in the cell death and survival rate of CRC cells was disclosed, which provides potential new targets for early diagnosis and clinical treatment of CRC.
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Affiliation(s)
- HaiFeng Jiang
- Department of Colorectal Tumor Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, Fujian Province, China
- Department of Critical Care Medicine, Second People's Hospital of Yibin City, Yibin, 644000, Sichuan Province, China
| | - WeiChao Su
- Department of Colorectal Tumor Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, Fujian Province, China
- Xiamen Xianyue Hospital, Xianyue Hospital Affiliated with Xiamen Medical College, Fujian Psychiatric Center, Fujian Clinical Research Center for Mental Disorders, Xiamen, 361012, China
| | - HaiXing Wang
- Department of Endoscopy Center, The First Affiliated Hospital of Xiamen University, Xiamen, 361003, China
| | - ChunYing Luo
- Department of Pathology, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, 533000, China
| | - YaTao Wang
- Department of Colorectal Tumor Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, Fujian Province, China
| | - LinJun Zhang
- Xiamen Cell Therapy Research Center, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, China
| | - LingTao Luo
- Department of Colorectal Tumor Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, Fujian Province, China
| | - ZeBin Lu
- Department of Clinical Medicine, Fujian Medical University, Fuzhou, 350122, China
| | - DongYan Shen
- Xiamen Cell Therapy Research Center, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, China
| | - GuoQiang Su
- Department of Colorectal Tumor Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, Fujian Province, China
- Department of Pathology, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, 533000, China
- Department of Clinical Medicine, Fujian Medical University, Fuzhou, 350122, China
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Tian L, Wang Y, Zhang Z, Feng X, Xiao F, Zong M. CD72, a new immune checkpoint molecule, is a novel prognostic biomarker for kidney renal clear cell carcinoma. Eur J Med Res 2023; 28:531. [PMID: 37980541 PMCID: PMC10656955 DOI: 10.1186/s40001-023-01487-8] [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: 09/20/2023] [Accepted: 10/30/2023] [Indexed: 11/20/2023] Open
Abstract
BACKGROUND The incidence and mortality of clear cell carcinoma of the kidney increases yearly. There are limited screening methods and advances in treating kidney renal clear cell carcinoma (KIRC). It is important to find new biomarkers to screen, diagnose and predict the prognosis of KIRC. Some studies have shown that CD72 influences the development and progression of colorectal cancer, nasopharyngeal cancer, and acute lymphoid leukemia. However, there is a lack of research on the role of CD72 in the pathogenesis of KIRC. This study aimed to determine whether CD72 is associated with the prognosis and immune infiltration of KIRC, providing an essential molecular basis for the early non-invasive diagnosis and immunotherapy of KIRC. METHODS Using TCGA, GTE, GEO, and ImmPort databases, we obtained the differentially expressed mRNA (DEmRNA) associated with the prognosis and immunity of KIRC patients. We used the Kruskal-Wallis test to identify clinicopathological parameters associated with target gene expression. We performed univariate and multivariate COX regression analyses to determine the effect of target gene expression and clinicopathological parameters on survival. We analyzed the target genes' relevant functions and signaling pathways through enrichment analysis. Finally, the correlation of target genes with tumor immune infiltration was explored by ssGSEA and Spearman correlation analysis. RESULTS The results revealed that patients with KIRC with higher expression of CD72 have a poorer prognosis. CD72 was associated with the Pathologic T stage, Pathologic stage, Pathologic M stage, Pathologic N stage, Histologic grade in KIRC patients, Laterality, and OS event. It was an independent predictor of the overall survival of KIRC patients. Functional enrichment analysis showed that CD72 was significantly enriched in oncogenic and immune-related pathways. According to ssGSEA and Spearman correlation analysis, CD72 expression was significantly associated with tumor immune cells and immune checkpoints. CONCLUSION Our study suggests that CD72 is associated with tumor immunity and may be a biomarker relevant to the diagnosis and prognosis of KIRC patients.
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Affiliation(s)
- Lv Tian
- Department of Rehabilitation, China-Japan Union Hospital of Jilin University, Changchun, 130033, China
- School of Nursing, Jilin University, Changchun, China
| | - Yiming Wang
- School of Nursing, Jilin University, Changchun, China
| | - Zhiyuan Zhang
- School of Nursing, Jilin University, Changchun, China
| | - Xuechao Feng
- School of Life Sciences, Northeast Normal University, Changchun, China
| | - Fengjun Xiao
- Beijing Institute of Radiation Medicine, Beijing, 100850, China.
| | - Minru Zong
- Department of Rehabilitation, China-Japan Union Hospital of Jilin University, Changchun, 130033, China.
- School of Nursing, Jilin University, Changchun, China.
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3
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Su WC, Mao XM, Li SY, Luo CY, Fan R, Jiang HF, Zhang LJ, Wang YT, Su GQ, Shen DY. DPY30 Promotes Proliferation and Cell Cycle Progression of Colorectal Cancer Cells via Mediating H3K4 Trimethylation. Int J Med Sci 2023; 20:901-917. [PMID: 37324189 PMCID: PMC10266052 DOI: 10.7150/ijms.80073] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 03/25/2023] [Indexed: 06/17/2023] Open
Abstract
DPY30, a core subunit of the SET1/MLL histone H3K4 methyltransferase complexes, plays an important role in diverse biological functions through the epigenetic regulation of gene transcription, especially in cancer development. However, its involvement in human colorectal carcinoma (CRC) has not been elucidated yet. Here we demonstrated that DPY30 was overexpressed in CRC tissues, and significantly associated with pathological grading, tumor size, TNM stage, and tumor location. Furthermore, DPY30 knockdown remarkably suppressed the CRC cell proliferation through downregulation of PCNA and Ki67 in vitro and in vivo, simultaneously induced cell cycle arrest at S phase by downregulating Cyclin A2. In the mechanistic study, RNA-Seq analysis revealed that enriched gene ontology of cell proliferation and cell growth was significantly affected. And ChIP result indicated that DPY30 knockdown inhibited H3 lysine 4 trimethylation (H3K4me3) and attenuated interactions between H3K4me3 with PCNA, Ki67 and cyclin A2 respectively, which led to the decrease of H3K4me3 establishment on their promoter regions. Taken together, our results demonstrate overexpression of DPY30 promotes CRC cell proliferation and cell cycle progression by facilitating the transcription of PCNA, Ki67 and cyclin A2 via mediating H3K4me3. It suggests that DPY30 may serve as a potential therapeutic molecular target for CRC.
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Affiliation(s)
- Wei-Chao Su
- Department of Colorectal Tumor Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian Province, P.R. China
| | - Xiao-Mei Mao
- School of Pharmaceutical Science and Technology, Suzhou Chien-Shiung Institute of Technology, Suzhou 215411, Jiangsu Province, P.R. China
| | - Si-Yang Li
- Xiamen Cell Therapy Research Center, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian Province, P.R. China
| | - Chun-Ying Luo
- Department of Pathology, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, Guangxi Province, P.R. China
- Medical College, Guangxi University, Nanning 530004, Guangxi Province, P.R. China
| | - Rui Fan
- Xiamen Cell Therapy Research Center, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian Province, P.R. China
| | - Hai-Feng Jiang
- Department of Colorectal Tumor Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian Province, P.R. China
| | - Lin-Jun Zhang
- Xiamen Cell Therapy Research Center, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian Province, P.R. China
| | - Ya-Tao Wang
- Department of Colorectal Tumor Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian Province, P.R. China
| | - Guo-Qiang Su
- Department of Colorectal Tumor Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian Province, P.R. China
- Medical College, Guangxi University, Nanning 530004, Guangxi Province, P.R. China
| | - Dong-Yan Shen
- Xiamen Cell Therapy Research Center, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian Province, P.R. China
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Mei PY, Xiao H, Guo Q, Meng WY, Wang ML, Huang QF, Liao YD. Identification and validation of DPY30 as a prognostic biomarker and tumor immune microenvironment infiltration characterization in esophageal cancer. Oncol Lett 2022; 25:68. [PMID: 36644145 PMCID: PMC9827447 DOI: 10.3892/ol.2022.13654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 11/10/2022] [Indexed: 12/28/2022] Open
Abstract
Esophageal cancer (ESCA) is a lethal malignancy and is associated with the alterations of various genes and epigenetic modifications. The protein dpy-30 homolog (DPY30) is a core member of histone H3K4 methylation catalase and its dysfunction is associated with the occurrence and development of cancer. Therefore, the present study investigated the role of DPY30 in ESCA and evaluated the association between the expression of DPY30, the clinicopathological characteristics of ESCA and the tumor immune microenvironment. It conducted a comprehensive analysis of DPY30 in patients with ESCA using The Cancer Genome Atlas (TCGA) database and clinical tissue microarray specimens of ESCA. Immunohistochemistry was performed to assess the expression levels of DPY30 in tissues. Receiver operating curve analysis, Kaplan-Meier survival analysis and Cox regression analysis were performed to identify the diagnostic and prognostic value of DPY30. Gene Set Enrichment Analysis, protein-protein interaction network and Estimation of Stromal and Immune cells in Malignant Tumor tissues using the Expression data were used to screen DPY30-associated genes and evaluate the immune score of the TCGA samples. The results demonstrated that the expression of mRNA and protein levels of DPY30 were significantly upregulated in tumor tissues compared with normal tissue samples. The expression of DPY30 was closely associated with the poor prognosis of patients with ESCA. The present study also found that DPY30 expression and the pathological characteristics of ESCA were significantly correlated. Additionally, the expression of DPY30 demonstrated a significant positive correlation with various immune cells infiltration. The results suggested that DPY30 might influence tumor immune infiltration. In conclusion, the findings suggested that DPY30 might be a potential prognostic biomarker and an immunotherapeutic target in ESCA.
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Affiliation(s)
- Pei-Yuan Mei
- Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Han Xiao
- Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Qiang Guo
- Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Wang-Yang Meng
- Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Ming-Liang Wang
- Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Quan-Fu Huang
- Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China,Correspondence to: Professor Yong-De Liao or Dr Quan-Fu Huang, Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, Hubei 430022, P.R. China, E-mail: , E-mail:
| | - Yong-De Liao
- Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China,Correspondence to: Professor Yong-De Liao or Dr Quan-Fu Huang, Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, Hubei 430022, P.R. China, E-mail: , E-mail:
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5
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Zhang Z, Han Y, Sun Q, Wang Y, Sun L. The DPY30-H3K4me3 Axis-Mediated PD-L1 Expression in Melanoma. J Inflamm Res 2022; 15:5595-5609. [PMID: 36185638 PMCID: PMC9525212 DOI: 10.2147/jir.s377678] [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: 06/23/2022] [Accepted: 09/20/2022] [Indexed: 11/23/2022] Open
Abstract
Background DPY30 is a common subunit of the human SET1/MLL complex and is an essential protein required for the activity of SET1/MLL methyltransferase. DPY30 regulates the histone H3K4 modification, and dysfunction of DPY30 might contribute to the regulation of cancer immune evasion. However, the functions and regulation of DPY30 in the expression of programmed cell death ligand 1 (PD-L1) is still not completely explored. Methods Various online databases were used for data processing and visualization, including UALCAN, Oncomine, cBioPortal, SangerBox, TISIDB, TIMER, and GEPIA databases. The expression of DPY30 and PD-L1 in melanoma tissues were evaluated by IHC. Chromatin Immunoprecipitation (ChIP), RT-PCR and flow cytometry were used to elucidate the underlying molecular mechanism of PD-L1 expression regulation and its function. Results The mRNA level of DPY30 in melanoma was higher than in normal tissues. The expression of DPY30 was positively associated with TMB, neoantigens and PD-L1 expression. Furthermore, DPY30 expression showed significant positive correlations with immune suppressor cells and ICP genes involved in T-cell exhaustion. IHC showed that the positive rates of DPY30 and PD-L1 in melanoma tissues were 62% and 58%, respectively. Correlation analysis revealed that DPY30 over-expression was positively associated with PD-L1 expression. Silencing of DPY30 by specific siRNA significantly inhibited PD-L1 expression. ChIP analysis revealed that H3K4me3 levels were enriched in the proximal PD-L1 promoter region in tumor cells. Inhibition of DPY30 still suppressed the PD-L1 level in IFN-γ treated MMAC-SF cells. Furthermore, the apoptosis of PD1+ T-cells in co-culture with MMAC-SF cells by knockdown of DPY30 were markedly reduced. Conclusion This study shows the roles of DPY30 in regulating the cancer immune evasion in melanoma. Targeting the DPY30-H3K4me3 axis might be an alternative approach to enhance the efficacy of checkpoint immunotherapy.
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Affiliation(s)
- Zhichun Zhang
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, People’s Republic of China
| | - Yixuan Han
- Department of Rheumatology and Immunology, Affiliated Kailuan General Hospital of North China University of Science and Technology, Tangshan, People’s Republic of China
| | - Qiuyue Sun
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, People’s Republic of China
| | - Yipeng Wang
- Department of Breast Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
| | - Lichao Sun
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, People’s Republic of China
- Correspondence: Lichao Sun; Yipeng Wang, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, People’s Republic of China, Tel/Fax +86 10-67781331, Email ;
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6
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Bochyńska A, Stenzel AT, Boroujeni RS, Kuo CC, Barsoum M, Liang W, Bussmann P, Costa IG, Lüscher-Firzlaff J, Lüscher B. Induction of senescence upon loss of the Ash2l core subunit of H3K4 methyltransferase complexes. Nucleic Acids Res 2022; 50:7889-7905. [PMID: 35819198 PMCID: PMC9371893 DOI: 10.1093/nar/gkac591] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 05/30/2022] [Accepted: 06/28/2022] [Indexed: 12/12/2022] Open
Abstract
Gene expression is controlled in part by post-translational modifications of core histones. Methylation of lysine 4 of histone H3 (H3K4), associated with open chromatin and gene transcription, is catalyzed by type 2 lysine methyltransferase complexes that require WDR5, RBBP5, ASH2L and DPY30 as core subunits. Ash2l is essential during embryogenesis and for maintaining adult tissues. To expand on the mechanistic understanding of Ash2l, we generated mouse embryo fibroblasts (MEFs) with conditional Ash2l alleles. Upon loss of Ash2l, methylation of H3K4 and gene expression were downregulated, which correlated with inhibition of proliferation and cell cycle progression. Moreover, we observed induction of senescence concomitant with a set of downregulated signature genes but independent of SASP. Many of the signature genes are FoxM1 responsive. Indeed, exogenous FOXM1 was sufficient to delay senescence. Thus, although the loss of Ash2l in MEFs has broad and complex consequences, a distinct set of downregulated genes promotes senescence.
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Affiliation(s)
- Agnieszka Bochyńska
- Institute of Biochemistry and Molecular Biology, Faculty of Medicine, RWTH Aachen University, Pauwelsstrasse 30, 52057 Aachen, Germany
| | - Alexander T Stenzel
- Institute of Biochemistry and Molecular Biology, Faculty of Medicine, RWTH Aachen University, Pauwelsstrasse 30, 52057 Aachen, Germany
| | - Roksaneh Sayadi Boroujeni
- Institute of Biochemistry and Molecular Biology, Faculty of Medicine, RWTH Aachen University, Pauwelsstrasse 30, 52057 Aachen, Germany
| | - Chao-Chung Kuo
- Institute for Computational Genomics, Faculty of Medicine, RWTH Aachen University, Pauwelsstrasse 30, 52057 Aachen, Germany.,Interdisciplinary Center for Clinical Research (IZKF), Faculty of Medicine, RWTH Aachen University, Aachen, Germany
| | - Mirna Barsoum
- Institute of Biochemistry and Molecular Biology, Faculty of Medicine, RWTH Aachen University, Pauwelsstrasse 30, 52057 Aachen, Germany
| | - Weili Liang
- Institute of Biochemistry and Molecular Biology, Faculty of Medicine, RWTH Aachen University, Pauwelsstrasse 30, 52057 Aachen, Germany
| | - Philip Bussmann
- Institute of Biochemistry and Molecular Biology, Faculty of Medicine, RWTH Aachen University, Pauwelsstrasse 30, 52057 Aachen, Germany
| | - Ivan G Costa
- Institute for Computational Genomics, Faculty of Medicine, RWTH Aachen University, Pauwelsstrasse 30, 52057 Aachen, Germany
| | - Juliane Lüscher-Firzlaff
- Institute of Biochemistry and Molecular Biology, Faculty of Medicine, RWTH Aachen University, Pauwelsstrasse 30, 52057 Aachen, Germany
| | - Bernhard Lüscher
- Institute of Biochemistry and Molecular Biology, Faculty of Medicine, RWTH Aachen University, Pauwelsstrasse 30, 52057 Aachen, Germany
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7
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Dixit D, Prager BC, Gimple RC, Miller TE, Wu Q, Yomtoubian S, Kidwell RL, Lv D, Zhao L, Qiu Z, Zhang G, Lee D, Park DE, Wechsler-Reya RJ, Wang X, Bao S, Rich JN. Glioblastoma stem cells reprogram chromatin in vivo to generate selective therapeutic dependencies on DPY30 and phosphodiesterases. Sci Transl Med 2022; 14:eabf3917. [PMID: 34985972 DOI: 10.1126/scitranslmed.abf3917] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Glioblastomas are universally fatal cancers and contain self-renewing glioblastoma stem cells (GSCs) that initiate tumors. Traditional anticancer drug discovery based on in vitro cultures tends to identify targets with poor therapeutic indices and fails to accurately model the effects of the tumor microenvironment. Here, leveraging in vivo genetic screening, we identified the histone H3 lysine 4 trimethylation (H3K4me3) regulator DPY30 (Dpy-30 histone methyltransferase complex regulatory subunit) as an in vivo–specific glioblastoma dependency. On the basis of the hypothesis that in vivo epigenetic regulation may define critical GSC dependencies, we interrogated active chromatin landscapes of GSCs derived from intracranial patient-derived xenografts (PDXs) and cell culture through H3K4me3 chromatin immunoprecipitation and transcriptome analyses. Intracranial-specific genes marked by H3K4me3 included FOS, NFκB, and phosphodiesterase (PDE) family members. In intracranial PDX tumors, DPY30 regulated angiogenesis and hypoxia pathways in an H3K4me3-dependent manner but was dispensable in vitro in cultured GSCs. PDE4B was a key downstream effector of DPY30, and the PDE4 inhibitor rolipram preferentially targeted DPY30-expressing cells and impaired PDX tumor growth in mice without affecting tumor cells cultured in vitro. Collectively, the MLL/SET1 (mixed lineage leukemia/SET domain-containing 1, histone lysine methyltransferase) complex member DPY30 selectively regulates H3K4me3 modification on genes critical to support angiogenesis and tumor growth in vivo, suggesting the DPY30-PDE4B axis as a specific therapeutic target in glioblastoma.
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Affiliation(s)
- Deobrat Dixit
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA
| | - Briana C Prager
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA.,Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA.,Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH 44106, USA
| | - Ryan C Gimple
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA.,Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Tyler E Miller
- Department of Pathology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Qiulian Wu
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA.,University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | - Shira Yomtoubian
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA
| | - Reilly L Kidwell
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA
| | - Deguan Lv
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA.,University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | - Linjie Zhao
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA.,University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | - Zhixin Qiu
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA.,University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | - Guoxin Zhang
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA
| | - Derrick Lee
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA.,University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | - Donglim Esther Park
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA
| | - Robert J Wechsler-Reya
- Tumor Initiation and Maintenance Program, NCI-Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Xiuxing Wang
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA
| | - Shideng Bao
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH 44106, USA.,Department of Cancer Biology, Cleveland Clinic Lerner Research Institute, Cleveland, OH 44106, USA
| | - Jeremy N Rich
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA.,University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, PA 15232, USA
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8
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Histone modifications in neurodifferentiation of embryonic stem cells. Heliyon 2022; 8:e08664. [PMID: 35028451 PMCID: PMC8741459 DOI: 10.1016/j.heliyon.2021.e08664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/25/2021] [Accepted: 12/21/2021] [Indexed: 11/30/2022] Open
Abstract
Post-translational modifications of histone proteins regulate a long cascade of downstream cellular activities, including transcription and replication. Cellular lineage differentiation involves large-scale intracellular signaling and extracellular context. In particular, histone modifications play instructive and programmatic roles in central nervous system development. Deciphering functions of histone could offer feasible molecular strategies for neural diseases caused by histone modifications. Here, we review recent advances of in vitro and in vivo studies on histone modifications in neural differentiation.
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Wu B, Yu J, Liu Y, Dou G, Hou Y, Zhang Z, Pan X, Wang H, Zhou P, Zhu D. Potential Pathogenic Genes and Mechanism of Ankylosing Spondylitis: A Study Based on WGCNA and Bioinformatics Analysis. World Neurosurg 2021; 158:e543-e556. [PMID: 34775094 DOI: 10.1016/j.wneu.2021.11.014] [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: 08/07/2021] [Revised: 11/02/2021] [Accepted: 11/03/2021] [Indexed: 10/19/2022]
Abstract
OBJECTIVE The purpose of this study is to explore the high-risk pathogenic driver genes for the occurrence and development of ankylosing spondylitis (AS) based on the bioinformatics method at the molecular level, to further elaborate the molecular mechanism of the pathogenesis of AS, and to provide potential biological targets for the diagnosis and treatment of clinical AS. METHODS The gene expression profile data GSE16879 were downloaded from the GEO (Gene Expression Omnibus) database, and weighted gene coexpression network analysis was performed. Highly correlated genes were divided into 14 modules, and 582 genes contained in the yellow (classic module) and 59 genes contained in grey60 (hematologic module) modules had the strongest correlation with AS. After protein-protein interaction (PPI) analysis, the top 20 genes with the highest scores were obtained from classic module and hematologic module, respectively. The DAVID (Database for Annotation, Visualization, and Integrated Discovery) database was used for Gene Ontology analysis and Kyoto Encyclopedia of Genes and Genomes analysis to analyze the biological functions of high-risk genes related to AS. RESULTS The results showed that the process of signal recognition particle-dependent cotranslational protein targeting to membrane, ribosome, nicotinamide adenine diphosphate hydride dehydrogenase (ubiquinone) activity, platelet activation, integrin complex, and extracellular matrix binding were enriched. CONCLUSIONS In this study, weighted gene coexpression network analysis, an efficient system biology algorithm, was used to analyze the high-risk pathogenic driver gene of AS. We provide new targets for the diagnosis and treatment of clinical AS and new ideas for further study.
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Affiliation(s)
- Bo Wu
- Department of Orthopaedics, the First Bethune Hospital of Jilin University, Changchun, China; Clinical College, Jilin University, Changchun, China
| | - Jing Yu
- Operating Theatre No. 1, the First Bethune Hospital of Jilin University, Changchun, China
| | - Yibing Liu
- Clinical College, Jilin University, Changchun, China
| | - Gaojing Dou
- Clinical College, Jilin University, Changchun, China; Department of Breast Surgery, the First Bethune Hospital of Jilin University, Changchun, China
| | - Yuanyuan Hou
- Clinical College, Jilin University, Changchun, China
| | - Zhiyun Zhang
- Clinical College, Jilin University, Changchun, China
| | - Xuefeng Pan
- Department of Obstetrics, the First Bethune Hospital of Jilin University, Changchun, China
| | - Hongyu Wang
- Clinical College, Jilin University, Changchun, China
| | - Pengcheng Zhou
- Department of Orthopaedics, the First Bethune Hospital of Jilin University, Changchun, China
| | - Dong Zhu
- Department of Orthopaedics, the First Bethune Hospital of Jilin University, Changchun, China.
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AHNAK controls 53BP1-mediated p53 response by restraining 53BP1 oligomerization and phase separation. Mol Cell 2021; 81:2596-2610.e7. [PMID: 33961796 PMCID: PMC8221568 DOI: 10.1016/j.molcel.2021.04.010] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 03/05/2021] [Accepted: 04/09/2021] [Indexed: 12/21/2022]
Abstract
p53-binding protein 1 (53BP1) regulates both the DNA damage response and p53 signaling. Although 53BP1's function is well established in DNA double-strand break repair, how its role in p53 signaling is modulated remains poorly understood. Here, we identify the scaffolding protein AHNAK as a G1 phase-enriched interactor of 53BP1. We demonstrate that AHNAK binds to the 53BP1 oligomerization domain and controls its multimerization potential. Loss of AHNAK results in hyper-accumulation of 53BP1 on chromatin and enhanced phase separation, culminating in an elevated p53 response, compromising cell survival in cancer cells but leading to senescence in non-transformed cells. Cancer transcriptome analyses indicate that AHNAK-53BP1 cooperation contributes to the suppression of p53 target gene networks in tumors and that loss of AHNAK sensitizes cells to combinatorial cancer treatments. These findings highlight AHNAK as a rheostat of 53BP1 function, which surveys cell proliferation by preventing an excessive p53 response.
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11
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Campbell SA, McDonald CL, Krentz NAJ, Lynn FC, Hoffman BG. TrxG Complex Catalytic and Non-catalytic Activity Play Distinct Roles in Pancreas Progenitor Specification and Differentiation. Cell Rep 2020; 28:1830-1844.e6. [PMID: 31412250 DOI: 10.1016/j.celrep.2019.07.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 06/04/2019] [Accepted: 07/12/2019] [Indexed: 02/06/2023] Open
Abstract
Appropriate regulation of genes that coordinate pancreas progenitor proliferation and differentiation is required for pancreas development. Here, we explore the role of H3K4 methylation and the Trithorax group (TrxG) complexes in mediating gene expression during pancreas development. Disruption of TrxG complex assembly, but not catalytic activity, prevented endocrine cell differentiation in pancreas progenitor spheroids. In vivo loss of TrxG catalytic activity in PDX1+ cells increased apoptosis and the fraction of progenitors in the G1 phase of the cell cycle. Pancreas progenitors were reallocated to the acinar lineage, primarily at the expense of NEUROG3+ endocrine progenitors. Later in development, acinar and endocrine cell numbers were decreased, and increased gene expression variance and reduced terminal marker activation in acinar cells led to their incomplete differentiation. These findings demonstrate that TrxG co-activator activity is required for gene induction, whereas TrxG catalytic activity and H3K4 methylation help maintain transcriptional stability.
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Affiliation(s)
- Stephanie A Campbell
- Department of Surgery, University of British Columbia, Vancouver, BC V5Z 4E3, Canada; Diabetes Research Group, British Columbia Children's Hospital Research Institute, 950 West 28th Avenue, Vancouver, BC V5Z 4H4, Canada
| | - Cassandra L McDonald
- Department of Surgery, University of British Columbia, Vancouver, BC V5Z 4E3, Canada
| | - Nicole A J Krentz
- Department of Surgery, University of British Columbia, Vancouver, BC V5Z 4E3, Canada; Diabetes Research Group, British Columbia Children's Hospital Research Institute, 950 West 28th Avenue, Vancouver, BC V5Z 4H4, Canada
| | - Francis C Lynn
- Department of Surgery, University of British Columbia, Vancouver, BC V5Z 4E3, Canada; Diabetes Research Group, British Columbia Children's Hospital Research Institute, 950 West 28th Avenue, Vancouver, BC V5Z 4H4, Canada
| | - Brad G Hoffman
- Department of Surgery, University of British Columbia, Vancouver, BC V5Z 4E3, Canada; Diabetes Research Group, British Columbia Children's Hospital Research Institute, 950 West 28th Avenue, Vancouver, BC V5Z 4H4, Canada.
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12
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Sharma S, Plotkin M. Id1 expression in kidney endothelial cells protects against diabetes-induced microvascular injury. FEBS Open Bio 2020; 10:1447-1462. [PMID: 31957231 PMCID: PMC7396439 DOI: 10.1002/2211-5463.12793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 11/25/2019] [Accepted: 01/16/2020] [Indexed: 11/08/2022] Open
Abstract
The inhibitor of differentiation (Id) transcription regulators, which are induced in response to oxidative stress, promote cell proliferation and inhibit senescence. Inhibitor of differentiation 1 (Id1) expression is limited to endothelial cells (EC) in the normal mouse kidney and is required for a normal response to injury. Endothelial dysfunction leads to the development of diabetic nephropathy, and so, we hypothesized that endothelial Id1 may help protect against hyperglycemia-induced microvascular injury and nephropathy. Here, we tested this hypothesis by using streptozotocin to induce diabetes in Id1 knockout (KO) mice and WT B6;129 littermates and examining the mice at 3 months. Expression of Id1 was observed to be increased 15-fold in WT kidney EC, and Id1 KO mice exhibited increased mesangial and myofibroblast proliferation, matrix deposition, and albuminuria compared with WT mice. Electron microscopy demonstrated peritubular capillary EC injury and lumen narrowing, and fluorescence microangiography showed a 45% reduction in capillary perfusion area with no reduction in CD31-stained areas in Id1 KO mice. Microarray analysis of EC isolated from WT and KO control and diabetic mice demonstrated activation of senescence pathways in KO cells. Kidneys from KO diabetic mice showed increased histological expression of senescence markers. In addition, premature senescence in cultured KO EC was also seen in response to oxidative stress. In conclusion, endothelial Id1 upregulation with hyperglycemia protects against microvascular injury and senescence and subsequent nephropathy.
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Affiliation(s)
| | - Matthew Plotkin
- Department of Nephrology, John L. McClellan VA Hospital, University of Arkansas for Medical Sciences, Little Rock, AR, USA
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Upregulation of DPY30 promotes cell proliferation and predicts a poor prognosis in cholangiocarcinoma. Biomed Pharmacother 2019; 123:109766. [PMID: 31846841 DOI: 10.1016/j.biopha.2019.109766] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/23/2019] [Accepted: 12/04/2019] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES Modification of lysine 4 on histone H3 methylation by SET1 and MLL family methyltransferase complexes is tightly linked to cancer progression. DPY30 is an important subunit of SET1 and MLL complexes, however, its expression and roles in cancer progression was little known, especially in cholangiocarcinoma (CCA). MATERIALS AND METHODS The Q-PCR and IHC were performed to detect the levels of DPY30 mRNA and protein in CCA tissues. Effect of DPY30 knockdown on the proliferation of CCA cells was detected by MTS and colony formation, and cell cycle distribution was analyzed by flow cytometer. The glucose uptake, lactate release and ATP production assays were performed to detect the glycolysis of CCA cells. RESULTS The level of DPY30 mRNA and protein in CCA tissues were all significantly higher than that of pericancer tissues, and its upregulation was closely associated with pathological differentiation, tumor size, and TNM stage. In addition, Kaplan-Meier analysis of overall survival revealed that DPY30 upregulation was significantly associated with poor survival, and univariate and multivariate analysis indicated that it was an independently prognosis factor in CCA patients. Moreover, DPY30 knockdown inhibited in-vitro growth and induced cell cycle arrest at G2/M and decreased glycolysis in CCA cells. CONCLUSIONS DPY30 upregulation may promote the development of CCA and was associated with the aggressive malignant behavior and poor survival outcome of CCA patients. DPY30 might serve as a potential novel target for treatment of CCA patients.
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14
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He FX, Zhang LL, Jin PF, Liu DD, Li AH. DPY30 regulates cervical squamous cell carcinoma by mediating epithelial-mesenchymal transition (EMT). Onco Targets Ther 2019; 12:7139-7147. [PMID: 31564898 PMCID: PMC6730605 DOI: 10.2147/ott.s209315] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 07/01/2019] [Indexed: 12/29/2022] Open
Abstract
Introduction Set1/MLL complexes are the main histone H3K4 methyltransferases and are crucial regulators of tumor pathogenesis. DPY30 is a fairly uncharacterized protein in the Set1/MLL complex, but it has been reported to regulate tumor growth. However, the exact mechanism by which DPY30 mediates the progression of cervical squamous cell carcinoma (CSCC) remains unknown. In the present study, we investigated the role of DPY30 in CSCC at a molecular level. Methods We obtained normal cervical and cervical cancer tissue samples from patients. We used immunohistochemistry and real-time polymerase chain reaction (PCR) to detect DPY30 expression in CSCC tissues. In addition, we used the human cervical cancer cell line to evaluate expression levels of DPY30 and epithelial–mesenchymal transition (EMT) markers in vitro. Results Immunohistochemical and real-time PCR analyses showed that DPY30 expression was upregulated in tissue samples from patients with CSCC and that DPY30 levels were associated with EMT markers such as E-cadherin. Furthermore, knock-down of DPY30 by siRNA resulted in a decrease in the proliferation, migration, and invasion of CSCC cells. We also found that DPY30-induced EMT is mediated by the Wnt/β-catenin signaling pathway. Conclusion Our results suggest that elevated DPY30 levels may contribute to EMT by activating Wnt/β-catenin signaling in the progression of CSCC.
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Affiliation(s)
- Feng-Xi He
- Department of Obstetrics and Gynecology, Liaocheng People's Hospital Affiliated to Shandong First Medical University, Liaocheng 252000, People's Republic of China
| | - Li-Li Zhang
- Department of Obstetrics and Gynecology, Liaocheng People's Hospital Affiliated to Shandong First Medical University, Liaocheng 252000, People's Republic of China
| | - Peng-Fei Jin
- Department of Obstetrics and Gynecology, Liaocheng People's Hospital Affiliated to Shandong First Medical University, Liaocheng 252000, People's Republic of China
| | - Dan-Dan Liu
- Shandong First Medical University, Taian 271016, People's Republic of China
| | - Ai-Hua Li
- Department of Obstetrics and Gynecology, Liaocheng People's Hospital Affiliated to Shandong First Medical University, Liaocheng 252000, People's Republic of China
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15
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Shah KK, Whitaker RH, Busby T, Hu J, Shi B, Wang Z, Zang C, Placzek WJ, Jiang H. Specific inhibition of DPY30 activity by ASH2L-derived peptides suppresses blood cancer cell growth. Exp Cell Res 2019; 382:111485. [PMID: 31251903 DOI: 10.1016/j.yexcr.2019.06.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 06/21/2019] [Accepted: 06/24/2019] [Indexed: 12/28/2022]
Abstract
DPY30 facilitates H3K4 methylation by directly binding to ASH2L in the SET1/MLL complexes and plays an important role in hematologic malignancies. However, the domain on DPY30 that regulates cancer growth is not evident, and the potential of pharmacologically targeting this chromatin modulator to inhibit cancer has not been explored. Here we have developed a peptide-based strategy to specifically target DPY30 activity. We have designed cell-penetrating peptides derived from ASH2L that can either bind to DPY30 or show defective or enhanced binding to DPY30. The DPY30-binding peptides specifically inhibit DPY30's activity in interacting with ASH2L and enhancing H3K4 methylation. Treatment with the DPY30-binding peptides significantly inhibited the growth of MLL-rearranged leukemia and other MYC-dependent hematologic cancer cells. We also revealed subsets of genes that may mediate the effect of the peptides on cancer cell growth, and showed that the DPY30-binding peptide sensitized leukemia to other types of epigenetic inhibitors. These results strongly support a critical role of the ASH2L-binding groove of DPY30 in promoting blood cancers, and demonstrate a proof-of-principle for the feasibility of pharmacologically targeting the ASH2L-binding groove of DPY30 for potential cancer inhibition.
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Affiliation(s)
- Kushani K Shah
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham School of Medicine, Birmingham, AL, 35294, United States
| | - Robert H Whitaker
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham School of Medicine, Birmingham, AL, 35294, United States
| | - Theodore Busby
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham School of Medicine, Birmingham, AL, 35294, United States
| | - Jing Hu
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham School of Medicine, Birmingham, AL, 35294, United States; Department of Biochemistry and Molecular Genetics, Charlottesville, VA, 22908, USA
| | - Bi Shi
- Department of Biochemistry and Molecular Genetics, Charlottesville, VA, 22908, USA
| | - Zhenjia Wang
- Center for Public Health Genomics, Charlottesville, VA, 22908, USA
| | - Chongzhi Zang
- Department of Biochemistry and Molecular Genetics, Charlottesville, VA, 22908, USA; Center for Public Health Genomics, Charlottesville, VA, 22908, USA; Department of Public Health Sciences, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA
| | - William J Placzek
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham School of Medicine, Birmingham, AL, 35294, United States
| | - Hao Jiang
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham School of Medicine, Birmingham, AL, 35294, United States; Department of Biochemistry and Molecular Genetics, Charlottesville, VA, 22908, USA.
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16
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Yang Z, Shah K, Khodadadi-Jamayran A, Jiang H. Control of Hematopoietic Stem and Progenitor Cell Function through Epigenetic Regulation of Energy Metabolism and Genome Integrity. Stem Cell Reports 2019; 13:61-75. [PMID: 31231026 PMCID: PMC6627005 DOI: 10.1016/j.stemcr.2019.05.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 05/23/2019] [Accepted: 05/24/2019] [Indexed: 12/23/2022] Open
Abstract
It remains largely unclear how stem cells regulate bioenergetics and genome integrity to ensure tissue homeostasis. Here, our integrative gene analyses suggest that metabolic and genotoxic stresses may underlie the common functional defects of both fetal and adult hematopoietic stem and progenitor cells (HSPCs) upon loss of DPY30, an epigenetic modulator that facilitates H3K4 methylation. DPY30 directly regulates expression of several key glycolytic genes, and its loss in HSPCs critically impaired energy metabolism, including both glycolytic and mitochondrial pathways. We also found significant increase in DNA breaks as a result of impaired DNA repair upon DPY30 loss, and inhibition of DNA damage response partially rescued clonogenicity of the DPY30-deficient HSPCs. Moreover, CDK inhibitor p21 was upregulated in DPY30-deficient HSPCs, and p21 deletion alleviated their functional defect. These results demonstrate that epigenetic mechanisms by H3K4 methylation play a crucial role in HSPC function through control of energy metabolism and protecting genome integrity. DPY30-deficient fetal and adult HSCs are defective in maintenance and differentiation Glycolytic and oxidative metabolism are dysregulated in DPY30-deficient HSCs Increase in DNA damage response contributes to dysfunction of DPY30-deficient HSPCs P21 increase partially mediates dysfunction of DPY30-deficient HSPCs
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Affiliation(s)
- Zhenhua Yang
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA.
| | - Kushani Shah
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA
| | - Alireza Khodadadi-Jamayran
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA
| | - Hao Jiang
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA; Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, 1340 JPA, Pinn Hall Room 6017, Charlottesville, VA 22908, USA.
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17
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Liu B. DPY30 functions in glucose homeostasis via integrating activated histone epigenetic modifications. Biochem Biophys Res Commun 2018; 507:286-290. [DOI: 10.1016/j.bbrc.2018.11.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 11/05/2018] [Indexed: 01/07/2023]
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18
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Differential Proteome Analysis of Human Neuroblastoma Xenograft Primary Tumors and Matched Spontaneous Distant Metastases. Sci Rep 2018; 8:13986. [PMID: 30228356 PMCID: PMC6143537 DOI: 10.1038/s41598-018-32236-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 09/05/2018] [Indexed: 12/18/2022] Open
Abstract
Metastasis formation is the major cause for cancer-related deaths and the underlying mechanisms remain poorly understood. In this study we describe spontaneous metastasis xenograft mouse models of human neuroblastoma used for unbiased identification of metastasis-related proteins by applying an infrared laser (IR) for sampling primary tumor and metastatic tissues, followed by mass spectrometric proteome analysis. IR aerosol samples were obtained from ovarian and liver metastases, which were indicated by bioluminescence imaging (BLI), and matched subcutaneous primary tumors. Corresponding histology proved the human origin of metastatic lesions. Ovarian metastases were commonly larger than liver metastases indicating differential outgrowth capacities. Among ~1,900 proteins identified at each of the three sites, 55 proteins were differentially regulated in ovarian metastases while 312 proteins were regulated in liver metastases. There was an overlap of 21 and 7 proteins up- and down-regulated at both metastatic sites, respectively, most of which were so far not related to metastasis such as LYPLA2, EIF4B, DPY30, LGALS7, PRPH, and NEFM. Moreover, we established in vitro sublines from primary tumor and metastases and demonstrate differences in cellular protrusions, migratory/invasive potential and glycosylation. Summarized, this work identified several novel putative drivers of metastasis formation that are tempting candidates for future functional studies.
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Zhang L, Zhang S, Li A, Zhang A, Zhang S, Chen L. DPY30 is required for the enhanced proliferation, motility and epithelial-mesenchymal transition of epithelial ovarian cancer cells. Int J Mol Med 2018; 42:3065-3072. [PMID: 30221689 PMCID: PMC6202113 DOI: 10.3892/ijmm.2018.3869] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 08/28/2018] [Indexed: 12/20/2022] Open
Abstract
Epithelial ovarian cancer (EOC) is one of the most lethal gynecological malignancies and is known to be associated with the accumulation of various genetic and epigenetic alterations. As a member of the human histone-lysine N-methyltransferase SETD1A (SET1)/histone-lysine N-methyltransferase 2A (MLL) complexes that are required for full SET1/MLL methyltransferase activity, protein dpy-30 homolog (DPY30) catalyzes histone H3K4 methylation, and its dysfunction has been associated with the occurrence of cancer. Therefore, the present study investigated the role of DPY30 in EOC and the potential association between DPY30 expression and the clinicopathological characteristics of EOC. The expression of DPY30 was examined in EOC tissues and cell lines to identify any correlations between the clinico-pathological characteristics of EOC and DPY30 expression, and to determine the effects of DPY30 on EOC cell proliferation, migration and invasion. DPY30 was highly expressed in EOC tissues and cell lines, and high DPY30 expression was significantly associated with notable clinicopathological variables in EOC patients, including International Federation of Gynecology and Obstetrics stage, pathological grade and lymph node metastasis. Functional studies on EOC cell lines demonstrated that DPY30 significantly promoted cell proliferation, migration, and invasion, accelerated cell cycle progression, and promoted epithelial-mesenchymal transition. Chromatin immunoprecipitation assay results revealed that DPY30 regulates histone H3K4 modification via interaction with the vimentin gene promoter, suggesting that DPY30 promotes the transcription of vimentin. Finally, high expression of DPY30 was significantly associated with reduced survival in patients with EOC. The results indicated that DPY30 may act as an oncogene in EOC and thus represents a potential therapeutic target and prognostic marker in EOC.
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Affiliation(s)
- Lili Zhang
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Shuguang Zhang
- Liaocheng People's Hospital, Liaocheng, Shandong 252000, P.R. China
| | - Aihua Li
- Liaocheng People's Hospital, Liaocheng, Shandong 252000, P.R. China
| | - Anqi Zhang
- Liaocheng People's Hospital, Liaocheng, Shandong 252000, P.R. China
| | - Shiqian Zhang
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Liang Chen
- Department of Gynecological Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, Shandong 250117, P.R. China
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20
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Yang Z, Shah K, Busby T, Giles K, Khodadadi-Jamayran A, Li W, Jiang H. Hijacking a key chromatin modulator creates epigenetic vulnerability for MYC-driven cancer. J Clin Invest 2018; 128:3605-3618. [PMID: 29870403 DOI: 10.1172/jci97072] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 05/29/2018] [Indexed: 12/14/2022] Open
Abstract
While the genomic binding of MYC protein correlates with active epigenetic marks on chromatin, it remains largely unclear how major epigenetic mechanisms functionally impact the tumorigenic potential of MYC. Here, we show that, compared with the catalytic subunits, the core subunits, including DPY30, of the major H3K4 methyltransferase complexes were frequently amplified in human cancers and selectively upregulated in Burkitt lymphoma. We show that DPY30 promoted the expression of endogenous MYC and was also functionally important for efficient binding of MYC to its genomic targets by regulating chromatin accessibility. Dpy30 heterozygosity did not affect normal animal physiology including lifespan, but significantly suppressed Myc-driven lymphomagenesis, as cells failed to combat oncogene-triggered apoptosis as a result of insufficient epigenetic modulation and expression of a subset of antiapoptotic genes. Dpy30 reduction also greatly impeded MYC-dependent cellular transformation, without affecting normal cell growth. These results suggest that MYC hijacks a major epigenetic pathway - H3K4 methylation - to facilitate its molecular activity in target binding and to coordinate its oncogenic program for efficient tumorigenesis, meanwhile creating "epigenetic vulnerability." DPY30 and the H3K4 methylation pathway are thus potential epigenetic targets for treating certain MYC-driven cancers.
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Affiliation(s)
- Zhenhua Yang
- Department of Biochemistry and Molecular Genetics, UAB Stem Cell Institute, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - Kushani Shah
- Department of Biochemistry and Molecular Genetics, UAB Stem Cell Institute, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - Theodore Busby
- Department of Biochemistry and Molecular Genetics, UAB Stem Cell Institute, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - Keith Giles
- Department of Biochemistry and Molecular Genetics, UAB Stem Cell Institute, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - Alireza Khodadadi-Jamayran
- Department of Biochemistry and Molecular Genetics, UAB Stem Cell Institute, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - Wei Li
- Department of Biochemistry and Molecular Genetics, UAB Stem Cell Institute, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA.,Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Hao Jiang
- Department of Biochemistry and Molecular Genetics, UAB Stem Cell Institute, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA.,Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, Virginia, USA
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Bao L, Zhang Y, Wang J, Wang H, Dong N, Su X, Xu M, Wang X. Variations of chromosome 2 gene expressions among patients with lung cancer or non-cancer. Cell Biol Toxicol 2016; 32:419-35. [DOI: 10.1007/s10565-016-9343-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 06/09/2016] [Indexed: 12/15/2022]
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22
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Poupardin R, Schöttner K, Korbelová J, Provazník J, Doležel D, Pavlinic D, Beneš V, Koštál V. Early transcriptional events linked to induction of diapause revealed by RNAseq in larvae of drosophilid fly, Chymomyza costata. BMC Genomics 2015; 16:720. [PMID: 26391666 PMCID: PMC4578651 DOI: 10.1186/s12864-015-1907-4] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 09/09/2015] [Indexed: 02/06/2023] Open
Abstract
Background Diapause is a developmental alternative to direct ontogeny in many invertebrates. Its primary adaptive meaning is to secure survival over unfavourable seasons in a state of developmental arrest usually accompanied by metabolic suppression and enhanced tolerance to environmental stressors. During photoperiodically triggered diapause of insects, the ontogeny is centrally turned off under hormonal control, the molecular details of this transition being poorly understood. Using RNAseq technology, we characterized transcription profiles associated with photoperiodic diapause induction in the larvae of the drosophilid fly Chymomyza costata with the goal of identifying candidate genes and processes linked to upstream regulatory events that eventually lead to a complex phenotypic change. Results Short day photoperiod triggering diapause was associated to inhibition of 20-hydroxy ecdysone (20-HE) signalling during the photoperiod-sensitive stage of C. costata larval development. The mRNA levels of several key genes involved in 20-HE biosynthesis, perception, and signalling were significantly downregulated under short days. Hormonal change was translated into downregulation of a series of other transcripts with broad influence on gene expression, protein translation, alternative histone marking by methylation and alternative splicing. These changes probably resulted in blockade of direct development and deep restructuring of metabolic pathways indicated by differential expression of genes involved in cell cycle regulation, metabolism, detoxification, redox balance, protection against oxidative stress, cuticle formation and synthesis of larval storage proteins. This highly complex alteration of gene transcription was expressed already during first extended night, within the first four hours after the change of the photoperiodic signal from long days to short days. We validated our RNAseq differential gene expression results in an independent qRT-PCR experiment involving wild-type (photoperiodic) and NPD-mutant (non-photoperiodic) strains of C. costata. Conclusions Our study revealed several strong candidate genes for follow-up functional studies. Candidate genes code for upstream regulators of a complex change of gene expression, which leads to phenotypic switch from direct ontogeny to larval diapause. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1907-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Rodolphe Poupardin
- Biology Centre CAS, Institute of Entomology, Branišovská 31, 37005, České Budějovice, Czech Republic.
| | - Konrad Schöttner
- Biology Centre CAS, Institute of Entomology, Branišovská 31, 37005, České Budějovice, Czech Republic.
| | - Jaroslava Korbelová
- Biology Centre CAS, Institute of Entomology, Branišovská 31, 37005, České Budějovice, Czech Republic.
| | - Jan Provazník
- Biology Centre CAS, Institute of Entomology, Branišovská 31, 37005, České Budějovice, Czech Republic. .,Faculty of Science, University of South Bohemia, Branišovská 31, 37005, České Budějovice, Czech Republic.
| | - David Doležel
- Biology Centre CAS, Institute of Entomology, Branišovská 31, 37005, České Budějovice, Czech Republic.
| | - Dinko Pavlinic
- Genomics Core Facility, European Molecular Biology Laboratory, Meyerhofstraße 1, 69117, Heidelberg, Germany.
| | - Vladimír Beneš
- Genomics Core Facility, European Molecular Biology Laboratory, Meyerhofstraße 1, 69117, Heidelberg, Germany.
| | - Vladimír Koštál
- Biology Centre CAS, Institute of Entomology, Branišovská 31, 37005, České Budějovice, Czech Republic.
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Lee YJ, Han ME, Baek SJ, Kim SY, Oh SO. Roles of DPY30 in the Proliferation and Motility of Gastric Cancer Cells. PLoS One 2015; 10:e0131863. [PMID: 26147337 PMCID: PMC4493084 DOI: 10.1371/journal.pone.0131863] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 06/08/2015] [Indexed: 12/11/2022] Open
Abstract
Various types of histone methylation have been associated with cancer progression. Depending on the methylation site in histone proteins, its effects on transcription are different. DPY30 is a common member of SET1/MLL histone H3K4 methyltransferase complexes. However, its expression and roles in gastric cancer have been poorly characterized. To determine whether DPY30 has pathophysiological roles in gastric cancer, its expression and roles were examined. Immunohistochemistry and real time PCR showed up-regulation of DPY30 expression in some gastric cancer cell lines and patients’ tissues. Its knockdown by siRNA decreased the proliferation, migration, and invasion of gastric cancer cells, whereas its overexpression showed the opposite effects. These results indicate that DPY30 has critical roles in the proliferation, migration, and invasion of gastric cancer cells, and suggest DPY30 might be a therapeutic target in gastric cancer.
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Affiliation(s)
- Yong Joo Lee
- Departments of Anatomy, School of Medicine, Pusan National University, Busan, Republic of Korea
| | - Myoung-Eun Han
- Departments of Anatomy, School of Medicine, Pusan National University, Busan, Republic of Korea
- Medical Research Center for Ischemic Tissue Regeneration, Pusan National University, Busan, Republic of Korea
| | - Su-Jin Baek
- Medical Genomics Research Center, KRIBB, Daejeon, Republic of Korea
| | - Seon-Young Kim
- Medical Genomics Research Center, KRIBB, Daejeon, Republic of Korea
| | - Sae-Ock Oh
- Departments of Anatomy, School of Medicine, Pusan National University, Busan, Republic of Korea
- * E-mail:
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24
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Tremblay V, Zhang P, Chaturvedi CP, Thornton J, Brunzelle JS, Skiniotis G, Shilatifard A, Brand M, Couture JF. Molecular basis for DPY-30 association to COMPASS-like and NURF complexes. Structure 2014; 22:1821-1830. [PMID: 25456412 DOI: 10.1016/j.str.2014.10.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 09/15/2014] [Accepted: 10/06/2014] [Indexed: 01/31/2023]
Abstract
DPY-30 is a subunit of mammalian COMPASS-like complexes (complex of proteins associated with Set1) and regulates global histone H3 Lys-4 trimethylation. Here we report structural evidence showing that the incorporation of DPY-30 into COMPASS-like complexes is mediated by several hydrophobic interactions between an amphipathic α helix located on the C terminus of COMPASS subunit ASH2L and the inner surface of the DPY-30 dimerization/docking (D/D) module. Mutations impairing the interaction between ASH2L and DPY-30 result in a loss of histone H3K4me3 at the β locus control region and cause a delay in erythroid cell terminal differentiation. Using overlay assays, we defined a consensus sequence for DPY-30 binding proteins and found that DPY-30 interacts with BAP18, a subunit of the nucleosome remodeling factor complex. Overall, our results indicate that the ASH2L/DPY-30 complex is important for cell differentiation and provide insights into the ability of DPY-30 to associate with functionally divergent multisubunit complexes.
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Affiliation(s)
- Véronique Tremblay
- Ottawa Institute of Systems Biology, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - Pamela Zhang
- Ottawa Institute of Systems Biology, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada
| | - Chandra-Prakash Chaturvedi
- The Sprott Center for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada; Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON K1H 8L6, Canada
| | - Janet Thornton
- Department of Biochemistry and Molecular Genetics, Northwestern University, Searle Building, 320 East Superior Street, Chicago, IL 60611, USA
| | - Joseph S Brunzelle
- Department of Molecular Pharmacology and Biological Chemistry, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Georgios Skiniotis
- Life Sciences Institute and Department of Biological Chemistry, Medical School, University of Michigan, Ann Arbor, MI 48109-2216, USA
| | - Ali Shilatifard
- Department of Biochemistry and Molecular Genetics, Northwestern University, Searle Building, 320 East Superior Street, Chicago, IL 60611, USA
| | - Marjorie Brand
- The Sprott Center for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada; Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON K1H 8L6, Canada
| | - Jean-François Couture
- Ottawa Institute of Systems Biology, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada.
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25
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The DPY30 subunit in SET1/MLL complexes regulates the proliferation and differentiation of hematopoietic progenitor cells. Blood 2014; 124:2025-33. [PMID: 25139354 DOI: 10.1182/blood-2014-01-549220] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Epigenetic mechanisms, including histone modifications, have emerged as important factors influencing cell fate determination. The functional role of H3K4 methylation, however, remains largely unclear in the maintenance and differentiation of hematopoietic stem cells (HSCs)/hematopoietic progenitor cells (HPCs). Here we show that DPY30, a shared core subunit of the SET1/MLL family methyltransferase complexes and a facilitator of their H3K4 methylation activity, is important for ex vivo proliferation and differentiation of human CD34(+) HPCs. DPY30 promotes HPC proliferation by directly regulating the expression of genes critical for cell proliferation. Interestingly, while DPY30 knockdown in HPCs impaired their differentiation into the myelomonocytic lineage, it potently promoted hemoglobin production and affected the kinetics of their differentiation into the erythroid lineage. In an in vivo model, we show that morpholino-mediated dpy30 knockdown resulted in severe defects in the development of the zebrafish hematopoietic system, which could be partially rescued by coinjection of dpy30 messenger RNA. Taken together, our results establish a critical role of DPY30 in the proliferation and appropriate differentiation of hematopoietic progenitor cells and in animal hematopoiesis. Finally, we also demonstrate a crucial role of DPY30 in the growth of several MLL1-fusion-mediated leukemia cell lines.
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26
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Ali A, Veeranki SN, Tyagi S. A SET-domain-independent role of WRAD complex in cell-cycle regulatory function of mixed lineage leukemia. Nucleic Acids Res 2014; 42:7611-24. [PMID: 24880690 PMCID: PMC4081079 DOI: 10.1093/nar/gku458] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
MLL, the trithorax ortholog, is a well-characterized histone 3 lysine 4 methyltransferase that is crucial for proper regulation of the Hox genes during embryonic development. Chromosomal translocations, disrupting the Mll gene, lead to aggressive leukemia with poor prognosis. However, the functions of MLL in cellular processes like cell-cycle regulation are not well studied. Here we show that the MLL has a regulatory role during multiple phases of the cell cycle. RNAi-mediated knockdown reveals that MLL regulates S-phase progression and, proper segregation and cytokinesis during M phase. Using deletions and mutations, we narrow the cell-cycle regulatory role to the C subunit of MLL. Our analysis reveals that the transactivation domain and not the SET domain is important for the S-phase function of MLL. Surprisingly, disruption of MLL–WRAD interaction is sufficient to disrupt proper mitotic progression. These mitotic functions of WRAD are independent of SET domain of MLL and, therefore, define a new role of WRAD in subset of MLL functions. Finally, we address the overlapping and unique roles of the different SET family members in the cell cycle.
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Affiliation(s)
- Aamir Ali
- Laboratory of Cell Cycle Regulation, Centre for DNA Fingerprinting and Diagnostics (CDFD), Nampally, Hyderabad, India
| | - Sailaja Naga Veeranki
- Laboratory of Cell Cycle Regulation, Centre for DNA Fingerprinting and Diagnostics (CDFD), Nampally, Hyderabad, India
| | - Shweta Tyagi
- Laboratory of Cell Cycle Regulation, Centre for DNA Fingerprinting and Diagnostics (CDFD), Nampally, Hyderabad, India
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27
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Simboeck E, Di Croce L. p16INK4a in cellular senescence. Aging (Albany NY) 2013; 5:590-591. [PMID: 23965734 PMCID: PMC3796211 DOI: 10.18632/aging.100592] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 08/15/2013] [Indexed: 06/02/2023]
Affiliation(s)
- Elisabeth Simboeck
- Centre for Genomic Regulation (CRG) and UPF, Dr.Aiguader 88, 08003 Barcelona, Spain
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