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Yang J, Lin L, Zou GJ, Wang LF, Li F, Li CQ, Cui YH, Huang FL. CK2 negatively regulates the extinction of remote fear memory. Behav Brain Res 2024; 465:114960. [PMID: 38494129 DOI: 10.1016/j.bbr.2024.114960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 03/13/2024] [Accepted: 03/14/2024] [Indexed: 03/19/2024]
Abstract
Cognitive behavioral therapy, rooted in exposure therapy, is currently the primary approach employed in the treatment of anxiety-related conditions, including post-traumatic stress disorder (PTSD). In laboratory settings, fear extinction in animals is a commonly employed technique to investigate exposure therapy; however, the precise mechanisms underlying fear extinction remain elusive. Casein kinase 2 (CK2), which regulates neuroplasticity via phosphorylation of its substrates, has a significant influence in various neurological disorders, such as Alzheimer's disease and Parkinson's disease, as well as in the process of learning and memory. In this study, we adopted a classical Pavlovian fear conditioning model to investigate the involvement of CK2 in remote fear memory extinction and its underlying mechanisms. The results indicated that the activity of CK2 in the medial prefrontal cortex (mPFC) of mice was significantly upregulated after extinction training of remote cued fear memory. Notably, administration of the CK2 inhibitor CX-4945 prior to extinction training facilitated the extinction of remote fear memory. In addition, CX-4945 significantly upregulated the expression of p-ERK1/2 and p-CREB in the mPFC. Our results suggest that CK2 negatively regulates remote fear memory extinction, at least in part, by inhibiting the ERK-CREB pathway. These findings contribute to our understanding of the underlying mechanisms of remote cued fear extinction, thereby offering a theoretical foundation and identifying potential targets for the intervention and treatment of PTSD.
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Affiliation(s)
- Jie Yang
- Department of Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan 410013, China; School of Basic Medicine, Yiyang Medical College, Yiyang, Hunan 413000, China
| | - Lin Lin
- Nursing Department, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, China
| | - Guang-Jing Zou
- Department of Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan 410013, China
| | - Lai-Fa Wang
- Hunan Provincial University Key Laboratory of the Fundamental and Clinical Research on Neurodegenerative Diseases, Changsha Medical University, Changsha, Hunan 410219, China
| | - Fang Li
- Department of Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan 410013, China
| | - Chang-Qi Li
- Department of Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan 410013, China
| | - Yan-Hui Cui
- Department of Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan 410013, China.
| | - Fu-Lian Huang
- School of Basic Medicine, Yiyang Medical College, Yiyang, Hunan 413000, China.
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Yao Q, Long C, Yi P, Zhang G, Wan W, Rao X, Ying J, Liang W, Hua F. C/EBPβ: A transcription factor associated with the irreversible progression of Alzheimer's disease. CNS Neurosci Ther 2024; 30:e14721. [PMID: 38644578 PMCID: PMC11033503 DOI: 10.1111/cns.14721] [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: 11/15/2023] [Revised: 03/20/2024] [Accepted: 03/27/2024] [Indexed: 04/23/2024] Open
Abstract
BACKGROUND Alzheimer's disease (AD) is a neurodegenerative disorder distinguished by a swift cognitive deterioration accompanied by distinctive pathological hallmarks such as extracellular Aβ (β-amyloid) peptides, neuronal neurofibrillary tangles (NFTs), sustained neuroinflammation, and synaptic degeneration. The elevated frequency of AD cases and its proclivity to manifest at a younger age present a pressing challenge in the quest for novel therapeutic interventions. Numerous investigations have substantiated the involvement of C/EBPβ in the progression of AD pathology, thus indicating its potential as a therapeutic target for AD treatment. AIMS Several studies have demonstrated an elevation in the expression level of C/EBPβ among individuals afflicted with AD. Consequently, this review predominantly delves into the association between C/EBPβ expression and the pathological progression of Alzheimer's disease, elucidating its underlying molecular mechanism, and pointing out the possibility that C/EBPβ can be a new therapeutic target for AD. METHODS A systematic literature search was performed across multiple databases, including PubMed, Google Scholar, and so on, utilizing predetermined keywords and MeSH terms, without temporal constraints. The inclusion criteria encompassed diverse study designs, such as experimental, case-control, and cohort studies, restricted to publications in the English language, while conference abstracts and unpublished sources were excluded. RESULTS Overexpression of C/EBPβ exacerbates the pathological features of AD, primarily by promoting neuroinflammation and mediating the transcriptional regulation of key molecular pathways, including δ-secretase, apolipoprotein E4 (APOE4), acidic leucine-rich nuclear phosphoprotein-32A (ANP32A), transient receptor potential channel 1 (TRPC1), and Forkhead BoxO (FOXO). DISCUSSION The correlation between overexpression of C/EBPβ and the pathological development of AD, along with its molecular mechanisms, is evident. Investigating the pathways through which C/EBPβ regulates the development of AD reveals numerous multiple vicious cycle pathways exacerbating the pathological progression of the disease. Furthermore, the exacerbation of pathological progression due to C/EBPβ overexpression and its molecular mechanism is not limited to AD but also extends to other neurodegenerative diseases such as amyotrophic lateral sclerosis (ALS), Parkinson's disease (PD), and multiple sclerosis (MS). CONCLUSION The overexpression of C/EBPβ accelerates the irreversible progression of AD pathophysiology. Additionally, C/EBPβ plays a crucial role in mediating multiple pathways linked to AD pathology, some of which engender vicious cycles, leading to the establishment of feedback mechanisms. To sum up, targeting C/EBPβ could hold promise as a therapeutic strategy not only for AD but also for other degenerative diseases.
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Affiliation(s)
- Qing Yao
- Department of AnesthesiologyThe Second Affiliated Hospital of Nanchang UniversityNanchang CityJiangxi ProvinceChina
- Key Laboratory of Anesthesiology of Jiangxi ProvinceNanchang CityJiangxi ProvinceChina
| | - Chubing Long
- Department of AnesthesiologyThe Second Affiliated Hospital of Nanchang UniversityNanchang CityJiangxi ProvinceChina
- Key Laboratory of Anesthesiology of Jiangxi ProvinceNanchang CityJiangxi ProvinceChina
| | - Pengcheng Yi
- Department of AnesthesiologyThe Second Affiliated Hospital of Nanchang UniversityNanchang CityJiangxi ProvinceChina
- Key Laboratory of Anesthesiology of Jiangxi ProvinceNanchang CityJiangxi ProvinceChina
| | - Guangyong Zhang
- Department of AnesthesiologyThe Second Affiliated Hospital of Nanchang UniversityNanchang CityJiangxi ProvinceChina
- Key Laboratory of Anesthesiology of Jiangxi ProvinceNanchang CityJiangxi ProvinceChina
| | - Wei Wan
- Department of AnesthesiologyThe Second Affiliated Hospital of Nanchang UniversityNanchang CityJiangxi ProvinceChina
- Key Laboratory of Anesthesiology of Jiangxi ProvinceNanchang CityJiangxi ProvinceChina
| | - Xiuqin Rao
- Department of AnesthesiologyThe Second Affiliated Hospital of Nanchang UniversityNanchang CityJiangxi ProvinceChina
- Key Laboratory of Anesthesiology of Jiangxi ProvinceNanchang CityJiangxi ProvinceChina
| | - Jun Ying
- Department of AnesthesiologyThe Second Affiliated Hospital of Nanchang UniversityNanchang CityJiangxi ProvinceChina
- Key Laboratory of Anesthesiology of Jiangxi ProvinceNanchang CityJiangxi ProvinceChina
| | - Weidong Liang
- Department of AnesthesiologyThe First Affiliated Hospital of Gannan Medical UniversityGanzhouJiangxi ProvinceChina
| | - Fuzhou Hua
- Department of AnesthesiologyThe Second Affiliated Hospital of Nanchang UniversityNanchang CityJiangxi ProvinceChina
- Key Laboratory of Anesthesiology of Jiangxi ProvinceNanchang CityJiangxi ProvinceChina
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Xu H, Wu D, Xiao M, Lei Y, Lei Y, Yu X, Shi S. PP2A complex disruptor SET prompts widespread hypertranscription of growth-essential genes in the pancreatic cancer cells. SCIENCE ADVANCES 2024; 10:eadk6633. [PMID: 38277454 PMCID: PMC10816699 DOI: 10.1126/sciadv.adk6633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 12/26/2023] [Indexed: 01/28/2024]
Abstract
Hyperactivation of the oncogenic transcription reflects the epigenetic plasticity of the cancer cells. Su(var)3-9, enhancer of zeste, Trithorax (SET) was described as a nuclear factor that stimulated transcription from the chromatin template. However, the mechanisms of SET-dependent transcription are unknown. Here, we found that overexpression of SET and CDK9 induced very similar transcriptome signatures in multiple cancer cell lines. SET localized in the transcription start site (TSS)-proximal regions and supported the RNA transcription. SET specifically bound the PP2A-C subunit and induced PP2A-A subunit repulsion from the C subunit, which indicated the role of SET as a PP2A-A/C complex disruptor in the TSS-proximal regions. Through blocking PP2A activity, SET assisted CDK9 to maintain Pol II CTD phosphorylation and activated mRNA transcription. Our findings position SET as a key factor that modulates chromatin PP2A activity, promoting the oncogenic transcription in the pancreatic cancer.
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Affiliation(s)
- He Xu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Di Wu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Mingming Xiao
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Yubin Lei
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, 18 Shilongshan Road, Hangzhou, Zhejiang Province 310024, China
| | - Yalan Lei
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Xianjun Yu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Si Shi
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
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Kou F, Wu L, Zheng Y, Yi Y, Ji Z, Huang Z, Guo S, Yang L. HMGB1/SET/HAT1 complex-mediated SASH1 repression drives glycolysis and metastasis in lung adenocarcinoma. Oncogene 2023; 42:3407-3421. [PMID: 37794134 DOI: 10.1038/s41388-023-02850-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 09/15/2023] [Accepted: 09/19/2023] [Indexed: 10/06/2023]
Abstract
High-mobility group box 1 (HMGB1) can enhance the stability and accessibility of nucleus binding sites to nucleosomes and transcription factors. Recently, HMGB1 has been recognized as a positive regulator of tumor glutamine, and its overexpression has been correlated with tumorigenesis and cancer progression. However, functions and mechanisms of HMGB1 in regulation of glycolysis during cancer progression in lung adenocarcinoma (LUAD) is still unclear. Here, we found that intracellular HMGB1 was consistently upregulated in LUAD specimens, and positively relevant to tumor grade and poor survival. HMGB1 facilitated glycolysis and promoted metastasis through physical interaction with SET and HAT1, forming HMGB1/SET/HAT1 complex that inhibited H3K9 and H3K27 acetylation in LUAD. The functional proteins complex coordinated histone modification to suppress the expression of SASH1, thus further facilitating glycolysis and inducing the metastasis in vitro and in vivo. Consistent with this, the expression of SASH1 was negatively correlated with HMGB1, SET and GLUT1, and positively correlated with HAT1 in human LUAD specimens. Clinically, LUAD patients with high expression of HMGB1 and low expression of SASH1 exhibited the worst clinical outcomes. Overall, the findings of this study revealed the critical role of HMGB1 in glycolysis and metastasis by attenuating H3K9ace and H3K27ace through physical interacted with SET and HAT1, which may facilitate future targeted therapies.
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Affiliation(s)
- Fan Kou
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, Tianjin, China
- Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, China
- Tianjin's Clinical Research Center for Cancer, Tianjin, China
- Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, China
- Department of Interventional Pulmonology, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
| | - Lei Wu
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, Tianjin, China
- Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, China
- Tianjin's Clinical Research Center for Cancer, Tianjin, China
- Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, China
- Cancer Center, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Yu Zheng
- Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, China
- Tianjin's Clinical Research Center for Cancer, Tianjin, China
- Department of Clinical Pharmacology, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Yeran Yi
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, Tianjin, China
- Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, China
- Tianjin's Clinical Research Center for Cancer, Tianjin, China
- Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, China
| | - Zhenyu Ji
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, Tianjin, China
- Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, China
- Tianjin's Clinical Research Center for Cancer, Tianjin, China
- Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, China
| | - Ziqi Huang
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, Tianjin, China
- Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, China
- Tianjin's Clinical Research Center for Cancer, Tianjin, China
- Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, China
| | - Shiwei Guo
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, Tianjin, China
- Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, China
- Tianjin's Clinical Research Center for Cancer, Tianjin, China
- Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, China
| | - Lili Yang
- Department of Immunology, Tianjin Medical University Cancer Institute & Hospital, Tianjin, China.
- Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, China.
- Tianjin's Clinical Research Center for Cancer, Tianjin, China.
- Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, China.
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Shen Y, Yang D, Zhang R, Chen X, Ma Q, Wei J, Zhai W, Pang A, He Y, Jiang E, Feng S. The outcome of acute leukemia patients with SET-NUP214 fusion after allogeneic stem cell transplantation. Front Oncol 2023; 13:1256043. [PMID: 37901324 PMCID: PMC10611484 DOI: 10.3389/fonc.2023.1256043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 09/25/2023] [Indexed: 10/31/2023] Open
Abstract
SET-NUP214 fusion gene, also known as TAF-1-CAN and SET-CAN, is observed in acute myeloid leukemia (AML) and T-cell lymphoblastic leukemia (T-ALL). SET-NUP214 fusion in T-cell lymphoblastic leukemia is associated with chemotherapy resistance, but the prognosis of patients with AML with SET-NUP214 has rarely been reported. In the present study, we retrospectively analyzed all patients with acute leukemia including AML and T-ALL patients with SET-NUP214 fusion who underwent allogeneic stem cell transplantation (alloHSCT) in our center from July 2017 to November 2022. Of the total 11 patients, 5 patients were diagnosed with AML and 6 patients were diagnosed with T-ALL de novo. All patients received myeloablative regimens in CR1, and there were three (60%) AML patients who relapsed post-alloHSCT and three T-ALL (50%) patients who relapsed post-alloHSCT. Only one patient with AML who relapsed post-alloHSCT responded to subsequent chemotherapy plus donor lymphocyte infusion and survived the last follow-up. The estimated 1-year overall survival and 3-year overall survival for all these 11 patients were 69.3% and 38.5%, respectively. The estimated 1-year leukemia-free survival and 3-year leukemia-free survival for all patients were 69.3% and 38.5%, respectively. The research shows a high incidence of relapse for patients with acute leukemia with the SET-NUP214 fusion gene, even after alloHSCT. More clinical trials or research with larger samples are urgently needed for this group of patients.
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Affiliation(s)
- Yuyan Shen
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Donglin Yang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Rongli Zhang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Xin Chen
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Qiaoling Ma
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Jialin Wei
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Weihua Zhai
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Aiming Pang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Yi He
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Erlie Jiang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Sizhou Feng
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
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Sun S, Zhong B, Zeng X, Li J, Chen Q. Transcription factor E4F1 as a regulator of cell life and disease progression. SCIENCE ADVANCES 2023; 9:eadh1991. [PMID: 37774036 PMCID: PMC10541018 DOI: 10.1126/sciadv.adh1991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 08/31/2023] [Indexed: 10/01/2023]
Abstract
E4F transcription factor 1 (E4F1), a member of the GLI-Kruppel family of zinc finger proteins, is now widely recognized as a transcription factor. It plays a critical role in regulating various cell processes, including cell growth, proliferation, differentiation, apoptosis and necrosis, DNA damage response, and cell metabolism. These processes involve intricate molecular regulatory networks, making E4F1 an important mediator in cell biology. Moreover, E4F1 has also been implicated in the pathogenesis of a range of human diseases. In this review, we provide an overview of the major advances in E4F1 research, from its first report to the present, including studies on its protein domains, molecular mechanisms of transcriptional regulation and biological functions, and implications for human diseases. We also address unresolved questions and potential research directions in this field. This review provides insights into the essential roles of E4F1 in human health and disease and may pave the way for facilitating E4F1 from basic research to clinical applications.
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Affiliation(s)
- Silu Sun
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Bing Zhong
- Upper Airways Research Laboratory, Department of Otolaryngology–Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Xin Zeng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
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Menchits Y, Salimova T, Komkov A, Abramov D, Konyukhova T, Abasov R, Raykina E, Itov A, Gaskova M, Borkovskaia A, Kazakova A, Soldatkina O, Kashpor S, Semchenkova A, Popov A, Novichkova G, Olshanskaya Y, Maschan A, Zerkalenkova E. Unusual Presentation of SET::NUP214-Associated Concomitant Hematological Neoplasm in a Child-Diagnostic and Treatment Struggle. Int J Mol Sci 2023; 24:14451. [PMID: 37833906 PMCID: PMC10572181 DOI: 10.3390/ijms241914451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/15/2023] [Accepted: 09/16/2023] [Indexed: 10/15/2023] Open
Abstract
Simultaneous multilineage hematologic malignancies are uncommon and associated with poorer prognosis than single-lineage leukemia or lymphoma. Here, we describe a concomitant malignant neoplasm in a 4-year-old boy. The child presented with massive lymphoproliferative syndrome, nasal breathing difficulties, and snoring. Morphological, immunocytochemical, and flow cytometry diagnostics showed coexistence of acute myeloid leukemia (AML) and peripheral T-cell lymphoma (PTCL). Molecular examination revealed a rare t(9;9)(q34;q34)/SET::NUP214 translocation as well as common TCR clonal rearrangements in both the bone marrow and lymph nodes. The disease showed primary refractoriness to both lymphoid and myeloid high-dose chemotherapy as well as combined targeted therapy (trametinib + ruxolitinib). Hence, HSCT was performed, and the patient has since been in complete remission for over a year. This observation highlights the importance of molecular techniques for determining the united nature of complex SET::NUP214-positive malignant neoplasms arising from precursor cells with high lineage plasticity.
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Affiliation(s)
- Yaroslav Menchits
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Tatiana Salimova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Alexander Komkov
- Abu Dhabi Stem Cells Center, Mahdar Qutouf Str., 25, Abu Dhabi 22404, United Arab Emirates;
| | - Dmitry Abramov
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Tatiana Konyukhova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Ruslan Abasov
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Elena Raykina
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Albert Itov
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Marina Gaskova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Aleksandra Borkovskaia
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Anna Kazakova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Olga Soldatkina
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Svetlana Kashpor
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Alexandra Semchenkova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Alexander Popov
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Galina Novichkova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Yulia Olshanskaya
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Alexey Maschan
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
| | - Elena Zerkalenkova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Samora Maschela Str., 1, 117998 Moscow, Russia (T.K.); (R.A.)
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González-Arzola K, Díaz-Quintana A. Mitochondrial Factors in the Cell Nucleus. Int J Mol Sci 2023; 24:13656. [PMID: 37686461 PMCID: PMC10563088 DOI: 10.3390/ijms241713656] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/31/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023] Open
Abstract
The origin of eukaryotic organisms involved the integration of mitochondria into the ancestor cell, with a massive gene transfer from the original proteobacterium to the host nucleus. Thus, mitochondrial performance relies on a mosaic of nuclear gene products from a variety of genomes. The concerted regulation of their synthesis is necessary for metabolic housekeeping and stress response. This governance involves crosstalk between mitochondrial, cytoplasmic, and nuclear factors. While anterograde and retrograde regulation preserve mitochondrial homeostasis, the mitochondria can modulate a wide set of nuclear genes in response to an extensive variety of conditions, whose response mechanisms often merge. In this review, we summarise how mitochondrial metabolites and proteins-encoded either in the nucleus or in the organelle-target the cell nucleus and exert different actions modulating gene expression and the chromatin state, or even causing DNA fragmentation in response to common stress conditions, such as hypoxia, oxidative stress, unfolded protein stress, and DNA damage.
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Affiliation(s)
- Katiuska González-Arzola
- Centro Andaluz de Biología Molecular y Medicina Regenerativa—CABIMER, Consejo Superior de Investigaciones Científicas—Universidad de Sevilla—Universidad Pablo de Olavide, 41092 Seville, Spain
- Departamento de Bioquímica Vegetal y Biología Molecular, Universidad de Sevilla, 41012 Seville, Spain
| | - Antonio Díaz-Quintana
- Departamento de Bioquímica Vegetal y Biología Molecular, Universidad de Sevilla, 41012 Seville, Spain
- Instituto de Investigaciones Químicas—cicCartuja, Universidad de Sevilla—C.S.I.C, 41092 Seville, Spain
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9
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Park J, Kim JY, Park JW, Kang JY, Oh H, Hahm J, Chae YC, Chakravarti D, Seo S. INHAT subunit SET/TAF-Iβ regulates PRC1-independent H2AK119 mono-ubiquitination via E3 ligase MIB1 in colon cancer. NAR Cancer 2023; 5:zcad050. [PMID: 37746636 PMCID: PMC10516711 DOI: 10.1093/narcan/zcad050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 08/21/2023] [Accepted: 09/11/2023] [Indexed: 09/26/2023] Open
Abstract
SET/TAF-Iβ, a subunit of the inhibitor of acetyltransferases (INHAT) complex, exhibits transcriptional repression activity by inhibiting histone acetylation. We find that SET/TAF-Iβ regulates mono-ubiquitination of histone H2A at lysine 119 (H2AK119ub), which is involved in polycomb-mediated transcriptional repression, in HCT116 cells. In this report, we demonstrate that SET/TAF-Iβ acts as an E2 ubiquitin-conjugating enzyme for PRC1-independent H2AK119ub. Furthermore, we identify that MIB1 is the E3 ligase partner for SET/TAF-Iβ using LC-MS/MS and in vitro ubiquitination assays. Transcriptome analysis reveals that SET/TAF-Iβ and MIB1 regulate the expression of genes related to DNA replication and cell cycle progression in HCT116 cells, and knockdown of either protein reduces proliferation of HCT116 cells by impeding cell cycle progression. Together, our study reveals a novel PRC1-independent epigenetic regulatory mechanism for H2AK119ub by SET/TAF-Iβ and MIB1 in colon cancer.
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Affiliation(s)
- Junyoung Park
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Ji-Young Kim
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Jin Woo Park
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Joo Young Kang
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Hyein Oh
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Ja Young Hahm
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Yun-Cheol Chae
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Debabrata Chakravarti
- Division of Reproductive Sciences in Medicine, Department of Obstetrics and Gynecology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Sang Beom Seo
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul 06974, Republic of Korea
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10
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Tao W, Lei H, Luo W, Huang Z, Ling P, Guo M, Wan L, Zhai K, Huang Q, Wu Q, Xu S, Zeng L, Wang X, Dong Z, Rich JN, Bao S. Novel INHAT repressor drives glioblastoma growth by promoting ribosomal DNA transcription in glioma stem cells. Neuro Oncol 2023; 25:1428-1440. [PMID: 36521011 PMCID: PMC10398814 DOI: 10.1093/neuonc/noac272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023] Open
Abstract
BACKGROUND Cancer cells including cancer stem cells exhibit a higher rate of ribosome biogenesis than normal cells to support rapid cell proliferation in tumors. However, the molecular mechanisms governing the preferential ribosome biogenesis in glioma stem cells (GSCs) remain unclear. In this work, we show that the novel INHAT repressor (NIR) promotes ribosomal DNA (rDNA) transcription to support GSC proliferation and glioblastoma (GBM) growth, suggesting that NIR is a potential therapeutic target for GBM. METHODS Immunoblotting, immunohistochemical and immunofluorescent analysis were used to determine NIR expression in GSCs and human GBMs. Using shRNA-mediated knockdown, we assessed the role and functional significance of NIR in GSCs and GSC-derived orthotopic GBM xenografts. We further performed mass spectrometry analysis, chromatin immunoprecipitation, and other biochemical assays to define the molecular mechanisms by which NIR promotes GBM progression. RESULTS Our results show that high expression of NIR predicts poor survival in GBM patients. NIR is enriched in the nucleoli of GSCs in human GBMs. Disrupting NIR markedly suppresses GSC proliferation and tumor growth by inhibiting rDNA transcription and pre-ribosomal RNA synthesis. In mechanistic studies, we find that NIR activates rDNA transcription to promote GSC proliferation by cooperating with Nucleolin (NCL) and Nucleophosmin 1 (NPM1), 2 important nucleolar transcription factors. CONCLUSIONS Our study uncovers a critical role of NIR-mediated rDNA transcription in the malignant progression of GBM, indicating that targeting this axis may provide a novel therapeutic strategy for GBM.
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Affiliation(s)
- Weiwei Tao
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Hong Lei
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Wenlong Luo
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Zhi Huang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Peng Ling
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Mengyue Guo
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Lihao Wan
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Kui Zhai
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Qian Huang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Qiulian Wu
- Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Shutong Xu
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Liang Zeng
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiuxing Wang
- Department of Cell Biology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zhiqiang Dong
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Jeremy N Rich
- Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Shideng Bao
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
- Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Center for Cancer Stem Cell Research, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA)
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11
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Zaghi M, Banfi F, Massimino L, Volpin M, Bellini E, Brusco S, Merelli I, Barone C, Bruni M, Bossini L, Lamparelli LA, Pintado L, D'Aliberti D, Spinelli S, Mologni L, Colasante G, Ungaro F, Cioni JM, Azzoni E, Piazza R, Montini E, Broccoli V, Sessa A. Balanced SET levels favor the correct enhancer repertoire during cell fate acquisition. Nat Commun 2023; 14:3212. [PMID: 37270547 DOI: 10.1038/s41467-023-39043-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 05/23/2023] [Indexed: 06/05/2023] Open
Abstract
Within the chromatin, distal elements interact with promoters to regulate specific transcriptional programs. Histone acetylation, interfering with the net charges of the nucleosomes, is a key player in this regulation. Here, we report that the oncoprotein SET is a critical determinant for the levels of histone acetylation within enhancers. We disclose that a condition in which SET is accumulated, the severe Schinzel-Giedion Syndrome (SGS), is characterized by a failure in the usage of the distal regulatory regions typically employed during fate commitment. This is accompanied by the usage of alternative enhancers leading to a massive rewiring of the distal control of the gene transcription. This represents a (mal)adaptive mechanism that, on one side, allows to achieve a certain degree of differentiation, while on the other affects the fine and corrected maturation of the cells. Thus, we propose the differential in cis-regulation as a contributing factor to the pathological basis of SGS and possibly other the SET-related disorders in humans.
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Affiliation(s)
- Mattia Zaghi
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Federica Banfi
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
- CNR Institute of Neuroscience, 20129, Milan, Italy
| | - Luca Massimino
- Esperimental Gastroenterology Unit, Division of Immunology, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Monica Volpin
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget); IRCCS, San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Edoardo Bellini
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Simone Brusco
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
- CNR Institute of Neuroscience, 20129, Milan, Italy
| | - Ivan Merelli
- CNR Institute of Biomedical Technologies, 20090, Segrate, Italy
| | - Cristiana Barone
- School of Medicine and Surgery, University of Milano-Bicocca, 20900, Monza, Italy
| | - Michela Bruni
- RNA biology of the Neuron Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Linda Bossini
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Luigi Antonio Lamparelli
- Esperimental Gastroenterology Unit, Division of Immunology, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Laura Pintado
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Deborah D'Aliberti
- School of Medicine and Surgery, University of Milano-Bicocca, 20900, Monza, Italy
| | - Silvia Spinelli
- School of Medicine and Surgery, University of Milano-Bicocca, 20900, Monza, Italy
| | - Luca Mologni
- School of Medicine and Surgery, University of Milano-Bicocca, 20900, Monza, Italy
| | - Gaia Colasante
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Federica Ungaro
- Esperimental Gastroenterology Unit, Division of Immunology, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Jean-Michel Cioni
- RNA biology of the Neuron Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Emanuele Azzoni
- School of Medicine and Surgery, University of Milano-Bicocca, 20900, Monza, Italy
| | - Rocco Piazza
- School of Medicine and Surgery, University of Milano-Bicocca, 20900, Monza, Italy
| | - Eugenio Montini
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget); IRCCS, San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Vania Broccoli
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
- CNR Institute of Neuroscience, 20129, Milan, Italy
| | - Alessandro Sessa
- Stem Cell and Neurogenesis Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy.
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12
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Epigenetic Regulation Mediated by Sphingolipids in Cancer. Int J Mol Sci 2023; 24:ijms24065294. [PMID: 36982369 PMCID: PMC10048860 DOI: 10.3390/ijms24065294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/02/2023] [Accepted: 03/06/2023] [Indexed: 03/12/2023] Open
Abstract
Epigenetic changes are heritable modifications that do not directly affect the DNA sequence. In cancer cells, the maintenance of a stable epigenetic profile can be crucial to support survival and proliferation, and said profile can differ significantly from that of healthy cells. The epigenetic profile of a cancer cell can be modulated by several factors, including metabolites. Recently, sphingolipids have emerged as novel modulators of epigenetic changes. Ceramide and sphingosine 1-phosphate have become well known in cancer due to activating anti-tumour and pro-tumour signalling pathways, respectively, and they have recently been shown to also induce several epigenetic modifications connected to cancer growth. Additionally, acellular factors in the tumour microenvironment, such as hypoxia and acidosis, are now recognised as crucial in promoting aggressiveness through several mechanisms, including epigenetic modifications. Here, we review the existing literature on sphingolipids, cancer, and epigenetic changes, with a focus on the interaction between these elements and components of the chemical tumour microenvironment.
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13
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Lu S, Chen Z, Liu Z, Liu Z. Unmasking the biological function and regulatory mechanism of NOC2L: a novel inhibitor of histone acetyltransferase. J Transl Med 2023; 21:31. [PMID: 36650543 PMCID: PMC9844006 DOI: 10.1186/s12967-023-03877-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 01/05/2023] [Indexed: 01/18/2023] Open
Abstract
NOC2 like nucleolar associated transcriptional repressor (NOC2L) was recently identified as a novel inhibitor of histone acetyltransferase (INHAT). NOC2L is found to have two INHAT function domains and regulates histone acetylation in a histone deacetylases (HDAC) independent manner, which is distinct from other INHATs. In this review, we summarize the biological function of NOC2L in histone acetylation regulation, P53-mediated transcription, ribosome RNA processing, certain development events and carcinogenesis. We propose that NOC2L may be explored as a potential biomarker and a therapeutic target in clinical practice.
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Affiliation(s)
- Siyi Lu
- grid.411642.40000 0004 0605 3760Department of General Surgery, Peking University Third Hospital, Beijing, 100191 China
| | - Zhaoyu Chen
- grid.11135.370000 0001 2256 9319Department of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191 China
| | - Zhenzhen Liu
- grid.414360.40000 0004 0605 7104Department of Thoracic Surgery, Beijing Jishuitan Hospital, Beijing, 100035 China
| | - Zhentao Liu
- grid.411642.40000 0004 0605 3760Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing, 100191 China
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14
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Lee HC, Lai WL, Lin CY, Zeng CW, Sheu JC, Chou TB, Tsai HJ. Anp32a Promotes Neuronal Regeneration after Spinal Cord Injury of Zebrafish Embryos. Int J Mol Sci 2022; 23:ijms232415921. [PMID: 36555564 PMCID: PMC9786895 DOI: 10.3390/ijms232415921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
After spinal cord injury (SCI) in mammals, neuronal regeneration is limited; in contrast, such regeneration occurs quickly in zebrafish. Member A of the acidic nuclear phosphoprotein 32 (ANP32a) family is involved in neuronal development, but its function is controversial, and its involvement in zebrafish SCI remains unknown. To determine the role of zebrafish ANP32a in the neuronal regeneration of SCI embryos, we microinjected ANP32a mRNA into embryos from zebrafish transgenic line Tg(mnx1:GFP) prior to SCI. Compared to control SCI embryos, the results showed that the regeneration of spinal cord and resumption of swimming capability were promoted by the overexpression of ANP32a mRNA but reduced by its knockdown. We next combined fluorescence-activated cell sorting with immunochemical staining of anti-GFAP and immunofluorescence staining against anti-PH3 on Tg(gfap:GFP) SCI embryos. The results showed that ANP32a promoted the proliferation and cell number of radial glial cells at the injury epicenter at 24 h post-injury (hpi). Moreover, when we applied BrdU labeling to SCI embryos derived from crossing the Tg(gfap:GFP) and Tg(mnx1:TagRFP) lines, we found that both radial glial cells and motor neurons had proliferated, along with their increased cell numbers in Anp32a-overexpression SCI-embryos. On this basis, we conclude that ANP32a plays a positive role in the regeneration of zebrafish SCI embryos.
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Affiliation(s)
- Hung-Chieh Lee
- Department of Life Science, Fu Jen Catholic University, New Taipei City 242062, Taiwan
| | - Wei-Lin Lai
- Institute of Molecular and Cellular Biology, College of Life Science, National Taiwan University, Taipei 10617, Taiwan
| | - Cheng-Yung Lin
- Institute of Biomedical Science, Mackay Medical College, New Taipei City 25245, Taiwan
| | - Chih-Wei Zeng
- Liver Disease Prevention and Treatment Research Foundation, Taipei 100008, Taiwan
| | - Jin-Chuan Sheu
- Liver Disease Prevention and Treatment Research Foundation, Taipei 100008, Taiwan
| | - Tze-Bin Chou
- Institute of Molecular and Cellular Biology, College of Life Science, National Taiwan University, Taipei 10617, Taiwan
| | - Huai-Jen Tsai
- Department of Life Science, Fu Jen Catholic University, New Taipei City 242062, Taiwan
- Institute of Molecular and Cellular Biology, College of Life Science, National Taiwan University, Taipei 10617, Taiwan
- School of Medicine, Fu-Jen Catholic University, New Taipei City 242062, Taiwan
- Correspondence:
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15
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Hwang IJ, Park J, Seo SB. Non-canonical transcriptional regulation of INHAT subunit SET/TAF-Iβ by EZH2. Biochem Biophys Res Commun 2022; 635:136-143. [DOI: 10.1016/j.bbrc.2022.10.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 10/10/2022] [Indexed: 11/26/2022]
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16
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Shukla S, Lazarchuk P, Pavlova MN, Sidorova JM. Genome-wide survey of D/E repeats in human proteins uncovers their instability and aids in identifying their role in the chromatin regulator ATAD2. iScience 2022; 25:105464. [PMCID: PMC9672403 DOI: 10.1016/j.isci.2022.105464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/03/2022] [Accepted: 10/26/2022] [Indexed: 11/15/2022] Open
Abstract
D/E repeats are stretches of aspartic and/or glutamic acid residues found in over 150 human proteins. We examined genomic stability of D/E repeats and functional characteristics of D/E repeat-containing proteins vis-à-vis the proteins with poly-Q or poly-A repeats, which are known to undergo pathologic expansions. Mining of tumor sequencing data revealed that D/E repeat-coding regions are similar to those coding poly-Qs and poly-As in increased incidence of trinucleotide insertions/deletions but differ in types and incidence of substitutions. D/E repeat-containing proteins preferentially function in chromatin metabolism and are the more likely to be nuclear and interact with core histones, the longer their repeats are. One of the longest D/E repeats of unknown function is in ATAD2, a bromodomain family ATPase frequently overexpressed in tumors. We demonstrate that D/E repeat deletion in ATAD2 suppresses its binding to nascent and mature chromatin and to the constitutive pericentromeric heterochromatin, where ATAD2 represses satellite transcription. Many human proteins contain runs of aspartic/glutamic acid residues (D/E repeats) D/E repeats show increased incidence of in-frame insertions/deletions in tumors Nuclear and histone-interacting proteins often have long D/E repeats D/E repeat of the oncogene ATAD2 controls its binding to pericentric chromatin
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Affiliation(s)
- Shalabh Shukla
- Department of Laboratory Medicine and Pathology, University of Washington, 1959 NE Pacific St., Box 357705, Seattle, WA 98195, USA
| | - Pavlo Lazarchuk
- Department of Laboratory Medicine and Pathology, University of Washington, 1959 NE Pacific St., Box 357705, Seattle, WA 98195, USA
| | - Maria N. Pavlova
- Department of Laboratory Medicine and Pathology, University of Washington, 1959 NE Pacific St., Box 357705, Seattle, WA 98195, USA
| | - Julia M. Sidorova
- Department of Laboratory Medicine and Pathology, University of Washington, 1959 NE Pacific St., Box 357705, Seattle, WA 98195, USA
- Corresponding author
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17
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Di Mambro A, Esposito M. Thirty years of SET/TAF1β/I2PP2A: from the identification of the biological functions to its implications in cancer and Alzheimer's disease. Biosci Rep 2022; 42:BSR20221280. [PMID: 36345878 PMCID: PMC9679398 DOI: 10.1042/bsr20221280] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 10/17/2022] [Accepted: 11/07/2022] [Indexed: 10/29/2023] Open
Abstract
The gene encoding for the protein SE translocation (SET) was identified for the first time 30 years ago as part of a chromosomal translocation in a patient affected by leukemia. Since then, accumulating evidence have linked overexpression of SET, aberrant SET splicing, and cellular localization to cancer progression and development of neurodegenerative tauopathies such as Alzheimer's disease. Molecular biology tools, such as targeted genetic deletion, and pharmacological approaches based on SET antagonist peptides, have contributed to unveil the molecular functions of SET and its implications in human pathogenesis. In this review, we provide an overview of the functions of SET as inhibitor of histone and non-histone protein acetylation and as a potent endogenous inhibitor of serine-threonine phosphatase PP2A. We discuss the role of SET in multiple cellular processes, including chromatin remodelling and gene transcription, DNA repair, oxidative stress, cell cycle, apoptosis cell migration and differentiation. We review the molecular mechanisms linking SET dysregulation to tumorigenesis and discuss how SET commits neurons to progressive cell death in Alzheimer's disease, highlighting the rationale of exploiting SET as a therapeutic target for cancer and neurodegenerative tauopathies.
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Affiliation(s)
- Antonella Di Mambro
- The Centre for Integrated Research in Life and Health Sciences, School of Health and Life Science, University of Roehampton, London, U.K
| | - Maria Teresa Esposito
- The Centre for Integrated Research in Life and Health Sciences, School of Health and Life Science, University of Roehampton, London, U.K
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18
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Hajjo R, Sabbah DA, Abusara OH, Al Bawab AQ. A Review of the Recent Advances in Alzheimer's Disease Research and the Utilization of Network Biology Approaches for Prioritizing Diagnostics and Therapeutics. Diagnostics (Basel) 2022; 12:diagnostics12122975. [PMID: 36552984 PMCID: PMC9777434 DOI: 10.3390/diagnostics12122975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 11/16/2022] [Accepted: 11/18/2022] [Indexed: 11/29/2022] Open
Abstract
Alzheimer's disease (AD) is a polygenic multifactorial neurodegenerative disease that, after decades of research and development, is still without a cure. There are some symptomatic treatments to manage the psychological symptoms but none of these drugs can halt disease progression. Additionally, over the last few years, many anti-AD drugs failed in late stages of clinical trials and many hypotheses surfaced to explain these failures, including the lack of clear understanding of disease pathways and processes. Recently, different epigenetic factors have been implicated in AD pathogenesis; thus, they could serve as promising AD diagnostic biomarkers. Additionally, network biology approaches have been suggested as effective tools to study AD on the systems level and discover multi-target-directed ligands as novel treatments for AD. Herein, we provide a comprehensive review on Alzheimer's disease pathophysiology to provide a better understanding of disease pathogenesis hypotheses and decipher the role of genetic and epigenetic factors in disease development and progression. We also provide an overview of disease biomarkers and drug targets and suggest network biology approaches as new tools for identifying novel biomarkers and drugs. We also posit that the application of machine learning and artificial intelligence to mining Alzheimer's disease multi-omics data will facilitate drug and biomarker discovery efforts and lead to effective individualized anti-Alzheimer treatments.
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Affiliation(s)
- Rima Hajjo
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, P.O. Box 130, Amman 11733, Jordan
- Laboratory for Molecular Modeling, Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, The University of North Carlina at Chapel Hill, Chapel Hill, NC 27599, USA
- National Center for Epidemics and Communicable Disease Control, Amman 11118, Jordan
- Correspondence:
| | - Dima A. Sabbah
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, P.O. Box 130, Amman 11733, Jordan
| | - Osama H. Abusara
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, P.O. Box 130, Amman 11733, Jordan
| | - Abdel Qader Al Bawab
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, P.O. Box 130, Amman 11733, Jordan
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19
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Feng H, Zhou BR, Schwieters CD, Bai Y. Structural Mechanism of TAF-Iβ Chaperone Function on Linker Histone H1.10. J Mol Biol 2022; 434:167755. [PMID: 35870650 PMCID: PMC9489631 DOI: 10.1016/j.jmb.2022.167755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 11/21/2022]
Abstract
Linker histone H1, facilitated by its chaperones, plays an essential role in regulating gene expression by maintaining chromatin's higher-order structure and epigenetic state. However, we know little about the structural mechanism of how the chaperones recognize linker histones and conduct their function. Here, we used biophysical and biochemical methods to investigate the recognition of human linker histone isoform H1.10 by the TAF-Iβ chaperone. Both H1.10 and TAF-Iβ proteins consist of folded cores and disordered tails. We found that H1.10 formed a complex with TAF-Iβ in a 2:2 stoichiometry. Using distance restraints obtained from methyl-TROSY NMR and spin labels, we built a structural model for the core region of the complex. In the model, the TAF-Iβ core interacts with the globular domain of H1.10 mainly through electrostatic interactions. We confirmed the interactions by measuring the effects of mutations on the binding affinity. A comparison of our structural model with the chromatosome structure shows that TAF-Iβ blocks the DNA binding sites of H1.10. Our study provides insights into the structural mechanism whereby TAF-Iβ functions as a chaperone by preventing H1.10 from interacting with DNA directly.
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Affiliation(s)
- Haniqao Feng
- Laboratory of Biochemistry and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Bing-Rui Zhou
- Laboratory of Biochemistry and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Charles D Schwieters
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Yawen Bai
- Laboratory of Biochemistry and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.
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20
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van den Berg DLC, Heng JIT, Sessa A, Dias C. Editorial: Transcription and chromatin regulators in neurodevelopmental disorders. Front Neurosci 2022; 16:1023580. [PMID: 36188461 PMCID: PMC9524249 DOI: 10.3389/fnins.2022.1023580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 12/01/2022] Open
Affiliation(s)
- Debbie L. C. van den Berg
- Department of Cell Biology, Erasmus University Medical Center, Rotterdam, Netherlands
- *Correspondence: Debbie L. C. van den Berg
| | | | - Alessandro Sessa
- Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Alessandro Sessa
| | - Cristina Dias
- Department of Medical and Molecular Genetics, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
- Neural Stem Cell Biology Laboratory, The Francis Crick Institute, London, United Kingdom
- Cristina Dias
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21
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Zhang Q, Wang S, Li W, Yau E, Hui H, Singh PK, Achuthan V, Young Karris MA, Engelman AN, Rana T. Genome-wide CRISPR/Cas9 transcriptional activation screen identifies a histone acetyltransferase inhibitor complex as a regulator of HIV-1 integration. Nucleic Acids Res 2022; 50:6687-6701. [PMID: 35713529 PMCID: PMC9262610 DOI: 10.1093/nar/gkac464] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 04/28/2022] [Accepted: 06/14/2022] [Indexed: 12/24/2022] Open
Abstract
The retrovirus human immunodeficiency virus-1 (HIV-1) is the causative agent of AIDS. Although treatment of HIV/AIDS with antiretroviral therapy provides suppression of viremia, latent reservoirs of integrated proviruses preclude cure by current antiviral treatments. Understanding the mechanisms of host-viral interactions may elucidate new treatment strategies. Here, we performed a CRISPR/Cas9 transcriptional activation screen using a high-complexity, genome-wide sgRNA library to identify cellular factors that inhibit HIV-1 infection of human CD4+ T cells. MT4 cells were transduced with a CRISPR/Cas9 sgRNA library and infected with nef-deficient HIV-1NL4-3 expressing ganciclovir-sensitive thymidine kinase, thus enabling selection of HIV-1-resistant cells for analysis of enriched sgRNAs. After validation of screen hits, multiple host factors essential for HIV-1 infection were identified, including SET (SET nuclear proto-oncogene) and ANP32A (acidic nuclear phosphoprotein 32A, PP32A), which together form a histone acetylase inhibitor complex. Using multiple human cell lines and peripheral blood mononuclear cells (PBMCs) from healthy donors and HIV-1-infected individuals, we demonstrate that SET depletion increased HIV-1 infectivity by augmenting DNA integration without significantly changing sites of integration. Conversely, SET overexpression decreased HIV-1 integration and infectivity. SET protein expression was significantly reduced in PBMCs from HIV-1-infected individuals and was downregulated by HIV-1 infection of healthy donor cells in vitro. Notably, HIV-1-induced downregulation of SET could be alleviated by inhibition of the protease granzyme A. Altogether, we have identified cellular inhibitors of HIV-1 infection on a genome-wide scale, which affords new insight into host-virus interactions and may provide new strategies for HIV-1 treatment.
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Affiliation(s)
| | | | - Wanyu Li
- Division of Genetics, Department of Pediatrics, Program in Immunology, Institute for Genomic Medicine, UCSD Center for AIDS Research, University of California San Diego, 9500 Gilman Drive MC 0762, La Jolla, CA 92093, USA
| | - Edwin Yau
- Division of Genetics, Department of Pediatrics, Program in Immunology, Institute for Genomic Medicine, UCSD Center for AIDS Research, University of California San Diego, 9500 Gilman Drive MC 0762, La Jolla, CA 92093, USA
| | - Hui Hui
- Division of Genetics, Department of Pediatrics, Program in Immunology, Institute for Genomic Medicine, UCSD Center for AIDS Research, University of California San Diego, 9500 Gilman Drive MC 0762, La Jolla, CA 92093, USA
| | - Parmit Kumar Singh
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA,Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Vasudevan Achuthan
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA,Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Maile Ann Young Karris
- Division of Infectious Diseases, Department of Medicine, UCSD Center for AIDS Research, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Alan N Engelman
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA,Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Tariq M Rana
- To whom correspondence should be addressed. Tel: +1 858 246 1100; Fax: +1 858 246 1600;
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22
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Antonyan L, Ernst C. Putative Roles of SETBP1 Dosage on the SET Oncogene to Affect Brain Development. Front Neurosci 2022; 16:813430. [PMID: 35685777 PMCID: PMC9173722 DOI: 10.3389/fnins.2022.813430] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 04/19/2022] [Indexed: 12/24/2022] Open
Abstract
Mutations in SET BINDING PROTEIN 1 (SETBP1) cause two different clinically distinguishable diseases called Schinzel–Giedion syndrome (SGS) or SETBP1 deficiency syndrome (SDD). Both disorders are disorders of protein dosage, where SGS is caused by decreased rate of protein breakdown due to mutations in a proteosome targeting domain, and SDD is caused by heterozygous loss-of-function mutations leading to haploinsufficiency. While phenotypes of affected individuals support a role for SETBP1 in brain development, little is known about the mechanisms that might underlie this. The binding partner which gave SETBP1 its name is SET and there is extensive literature on this important oncogene in non-neural tissues. Here we describe different molecular complexes in which SET is involved as well as the role of these complexes in brain development. Based on this information, we postulate how SETBP1 protein dosage might influence these SET-containing molecular pathways and affect brain development. We examine the roles of SET and SETBP1 in acetylation inhibition, phosphatase activity, DNA repair, and cell cycle control. This work provides testable hypotheses for how altered SETBP1 protein dosage affects brain development.
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23
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Sevoflurane inhibits histone acetylation and contributes to cognitive dysfunction by enhancing the expression of ANP32A in aging mice. Behav Brain Res 2022; 431:113949. [DOI: 10.1016/j.bbr.2022.113949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 05/11/2022] [Accepted: 05/26/2022] [Indexed: 12/15/2022]
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24
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Monteagudo S, Cornelis FMF, Wang X, de Roover A, Peeters T, Quintiens J, Sermon A, de Almeida RC, Meulenbelt I, Lories RJ. ANP32A represses Wnt signaling across tissues thereby protecting against osteoarthritis and heart disease. Osteoarthritis Cartilage 2022; 30:724-734. [PMID: 35227892 DOI: 10.1016/j.joca.2022.02.615] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/24/2022] [Accepted: 02/20/2022] [Indexed: 02/06/2023]
Abstract
OBJECTIVES To investigate how ANP32A, previously linked to the antioxidant response, regulates Wnt signaling as unraveled by transcriptome analysis of Anp32a-deficient mouse articular cartilage, and its implications for osteoarthritis (OA) and diseases beyond the joint. METHODS Anp32a knockdown chondrogenic ATDC5 cells were cultured in micromasses. Wnt target genes, differentiation markers and matrix deposition were quantified. Wnt target genes were determined in articular cartilage from Anp32a-deficient mice and primary human articular chondrocytes upon ANP32A silencing, using qPCR, luciferase assays and immunohistochemistry. Co-immunoprecipitation, immunofluorescence and chromatin-immunoprecipitation quantitative PCR probed the molecular mechanism via which ANP32A regulates Wnt signaling. Anp32a-deficient mice were subjected to the destabilization of the medial meniscus (DMM) OA model and treated with a Wnt inhibitor and an antioxidant. Severity of OA was assessed by cartilage damage and osteophyte formation. Human Protein Atlas data analysis identified additional organs where ANP32A may regulate Wnt signaling. Wnt target genes were determined in heart and hippocampus from Anp32a-deficient mice, and cardiac hypertrophy and fibrosis quantified. RESULTS Anp32a loss triggered Wnt signaling hyper-activation in articular cartilage. Mechanistically, ANP32A inhibited target gene expression via histone acetylation masking. Wnt antagonist treatment reduced OA severity in Anp32a-deficient mice by preventing osteophyte formation but not cartilage degradation, contrasting with antioxidant treatment. Dual therapy ameliorated more OA features than individual treatments. Anp32a-deficient mice also showed Wnt hyper-activation in the heart, potentially explaining the cardiac hypertrophy phenotype found. CONCLUSIONS ANP32A is a novel translationally relevant repressor of Wnt signaling impacting osteoarthritis and cardiac disease.
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Affiliation(s)
- S Monteagudo
- Laboratory of Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.
| | - F M F Cornelis
- Laboratory of Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.
| | - X Wang
- Laboratory of Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.
| | - A de Roover
- Laboratory of Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.
| | - T Peeters
- Laboratory of Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.
| | - J Quintiens
- Laboratory of Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.
| | - A Sermon
- Department of Trauma Surgery, University Hospitals Leuven, Leuven, Belgium; Department of Development and Regeneration, KU Leuven, Leuven, Belgium.
| | - R C de Almeida
- Department of Biomedical Data Sciences, Section of Molecular Epidemiology, Leiden University Medical Center, RC Leiden, the Netherlands.
| | - I Meulenbelt
- Department of Biomedical Data Sciences, Section of Molecular Epidemiology, Leiden University Medical Center, RC Leiden, the Netherlands; Integrated Research on Developmental Determinants of Ageing and Longevity (IDEAL), RC Leiden, the Netherlands.
| | - R J Lories
- Department of Trauma Surgery, University Hospitals Leuven, Leuven, Belgium; Division of Rheumatology, University Hospitals Leuven, Leuven, Belgium.
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25
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Uhl M, Schmeisser MJ, Schumann S. The Sexual Dimorphic Synapse: From Spine Density to Molecular Composition. Front Mol Neurosci 2022; 15:818390. [PMID: 35250477 PMCID: PMC8894598 DOI: 10.3389/fnmol.2022.818390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 01/20/2022] [Indexed: 11/13/2022] Open
Abstract
A synaptic sexual dimorphism is relevant in the context of multiple neurodevelopmental, neurodegenerative, and neuropsychiatric disorders. Many of these disorders show a different prevalence and progression in woman and man. A similar variance is also present in corresponding animal models. To understand and characterize this dimorphism in pathologies it is important to first understand sex differences in unaffected individuals. Therefore, sexual differences have been studied since 1788, first focusing on brain weight, size, and volume. But as these measures are not directly related to brain function, the investigation of sexual dimorphism also expanded to other organizational levels of the brain. This review is focused on sexual dimorphism at the synaptic level, as these specialized structures are the smallest functional units of the brain, determining cell communication, connectivity, and plasticity. Multiple differences between males and females can be found on the levels of spine density, synaptic morphology, and molecular synapse composition. These differences support the importance of sex-disaggregated data. The specificity of changes to a particular brain region or circuit might support the idea of a mosaic brain, in which each tile individually lies on a continuum from masculinization to feminization. Moreover, synapses can be seen as the smallest tiles of the mosaic determining the classification of larger areas.
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Affiliation(s)
- Mara Uhl
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
- Focus Program Translational Neurosciences, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Michael J. Schmeisser
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
- Focus Program Translational Neurosciences, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
- *Correspondence: Michael J. Schmeisser,
| | - Sven Schumann
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
- Sven Schumann,
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26
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Wang M, Guo H, Zhang X, Wang X, Tao H, Zhang T, Peng M, Zhang M, Huang Z. Small peptide targeting ANP32A as a novel strategy for acute myeloid leukemia therapy. Transl Oncol 2021; 15:101245. [PMID: 34678588 PMCID: PMC8529559 DOI: 10.1016/j.tranon.2021.101245] [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: 08/05/2021] [Revised: 09/26/2021] [Accepted: 10/12/2021] [Indexed: 12/22/2022] Open
Abstract
H3BP targeted ANP32A against AML by competitively disrupting ANP32A and H3 interaction and decreasing H3 acetylation and the expression of lipid metabolism genes. Expressed H3BP-GFP and synthetic TAT-H3BP peptide impaired H3 acetylation on multiple locus of target genes that reduced proliferation and caused apoptosis of leukemia cells in vitro. TAT-H3BP exhibits potent efficacy against leukemia in vivo: Intra-tumor injection of TAT-H3BP peptide prominently diminished the volume of subcutaneous tumors in nude mice; AMKL mice engrafted with TAT-H3BP-pretreated 6133/MPL W515L cells displayed dramatically moderated disease burden and prolonged survival time. TAT-H3BP peptide possess a therapeutic potential in patients with AML for micromole concentration of TAT-H3BP peptide efficiently inhibited the proliferation and CFU of human primary leukemia cells from AML patients. High ANP32A levels in human primary AML cells correlate with the intervention effect of TAT-H3BP peptide.
Clinic therapy of acute myeloid leukemia (AML) remains unsatisfactory that urges for development of novel strategies. Recent studies identified ANP32A as a novel biomarker of unfavorable outcome of leukemia, which promoted leukemogenesis by increasing H3 acetylation and the expression of lipid metabolism genes. It is of great significance to investigate whether targeting ANP32A is a novel strategy for leukemia therapy. To target ANP32A, we identified a peptide that competed with ANP32A to bind to histone 3 (termed as H3-binding peptide, H3BP). Disrupting ANP32A and H3 interaction by the overexpression of H3BP-GFP fusion protein mimicked the effect of ANP32A knockdown, impaired H3 acetylation on multiple locus of target genes, reduced proliferation, and caused apoptosis in leukemia cells. Furthermore, a synthesized membrane-penetrating peptide TAT-H3BP effectively entered into leukemia cells and phenocopied such effect. In vivo, TAT-H3BP showed potent efficacy against leukemia: Intra-tumor injection of TAT-H3BP significantly reduced the volume of subcutaneous tumors in nude mice and recipient mice engrafted with TAT-H3BP-pretreated 6133/MPL W515L cells exhibited ameliorated leukemia burden and prolonged survival. Noticeably, TAT-H3BP efficiently suppressed proliferation and colony-forming unit of human primary AML cells without affecting normal cord blood cells. Our findings demonstrate that intervening the physical interaction of ANP32A with H3 impairs the oncogenicity of ANP32A and may be a promising therapeutic strategy against AML.
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Affiliation(s)
- Manman Wang
- School of Life Sciences, Key Laboratory of Cell Hemostasis of Hubei Province, Wuhan University, No. 299 Bayi Road, Wuhan, Hubei 430072, PR China
| | - Hao Guo
- Medical Research Institute, Wuhan University, Wuhan, Hubei, PR China
| | - Xuechun Zhang
- School of Life Sciences, Key Laboratory of Cell Hemostasis of Hubei Province, Wuhan University, No. 299 Bayi Road, Wuhan, Hubei 430072, PR China
| | - Xiyang Wang
- School of Life Sciences, Key Laboratory of Cell Hemostasis of Hubei Province, Wuhan University, No. 299 Bayi Road, Wuhan, Hubei 430072, PR China
| | - Hu Tao
- School of Life Sciences, Key Laboratory of Cell Hemostasis of Hubei Province, Wuhan University, No. 299 Bayi Road, Wuhan, Hubei 430072, PR China
| | - Tan Zhang
- School of Life Sciences, Key Laboratory of Cell Hemostasis of Hubei Province, Wuhan University, No. 299 Bayi Road, Wuhan, Hubei 430072, PR China
| | - Min Peng
- Department of Oncology, Renmin Hospital of Wuhan University, Wuhan, Hubei PR China
| | - Min Zhang
- Department of Hematology, Union Hospital of Huazhong University of Science and Technology, Wuhan, Hubei PR China
| | - Zan Huang
- School of Life Sciences, Key Laboratory of Cell Hemostasis of Hubei Province, Wuhan University, No. 299 Bayi Road, Wuhan, Hubei 430072, PR China.
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27
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Yoneda M, Yasui K, Nakagawa T, Hattori N, Ito T. Nucleosome assembly protein 1 (NAP-1) is a regulator of histone H1 acetylation. J Biochem 2021; 170:763-773. [PMID: 34551067 DOI: 10.1093/jb/mvab098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 09/14/2021] [Indexed: 11/13/2022] Open
Abstract
Acetylation of histone H1 is generally considered to activate transcription, whereas deacetylation of H1 represses transcription. However, the precise mechanism of the acetylation is unknown. Here, using chromatography, we identified nucleosome assembly protein 1 (NAP-1) as having inhibitory activity against histone H1 acetylation by acetyltransferase p300. We found that native NAP-1 interacts with H1 in a Drosophila crude extract. We also found that it inhibits the deacetylation of histone H1 by histone deacetylase 1 (HDAC1). The core histones in nucleosomes were acetylated in a GAL4-VP16 transcriptional activator-dependent manner in vitro. This acetylation was strongly repressed by hypoacetylated H1 but to a lesser extent by hyperacetylated H1. Consistent with these findings, a micrococcal nuclease assay indicated that hypoacetylated H1, which represses activator-dependent acetylation, was incorporated into chromatin, whereas hyperacetylated H1 was not. To determine the contribution of NAP-1 to transcriptional regulation in vivo, we compared NAP-1 knockdown (KD) with coactivator CREB-binding protein (CBP) KD using RNA sequencing in Drosophila Schneider 2 cells. Most genes were downregulated rather than upregulated by NAP-1 KD, and those downregulated genes were also downregulated by CBP KD. Our results suggest that NAP-1 plays a role in transcriptional regulation by fine-tuning the acetylation of histone H1.
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Affiliation(s)
- Mitsuhiro Yoneda
- Department of Biochemistry, Nagasaki University School of Medicine, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan.,Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8523, Japan
| | - Kiyoshi Yasui
- Department of Biochemistry, Nagasaki University School of Medicine, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan.,Department of Oncology, Nagasaki University School of Medicine, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan
| | - Takeya Nakagawa
- Department of Biochemistry, Nagasaki University School of Medicine, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan.,Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8523, Japan
| | - Naoko Hattori
- Department of Biochemistry, Nagasaki University School of Medicine, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan.,Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8523, Japan
| | - Takashi Ito
- Department of Biochemistry, Nagasaki University School of Medicine, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan.,Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8523, Japan
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28
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Kato K, Kawaguchi A, Nagata K. Template activating factor-I epigenetically regulates the TERT transcription in human cancer cells. Sci Rep 2021; 11:17726. [PMID: 34489496 PMCID: PMC8421516 DOI: 10.1038/s41598-021-97009-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 08/19/2021] [Indexed: 11/09/2022] Open
Abstract
Telomere, the terminus of linear chromosome in eukaryotes, is composed of specific repeat DNA which is mainly synthesized by a protein complex called telomerase. The maintenance of telomere DNA is important for unlimited proliferative capacity of cancer cells. The telomerase activity is controlled by the expression level of telomerase reverse transcriptase (TERT), a catalytic unit of telomerase, in some species including human. Therefore, to reveal the regulatory mechanisms of the transcription of TERT gene is important for understanding the tumor development. We found that template activating factor-I (TAF-I), a multifunctional nuclear protein, is involved in the transcriptional activation of TERT for the maintenance of telomere DNA in HeLa cells. TAF-I maintains the histone H3 modifications involved in transcriptional activation and hypomethylated cytosines in CpG dinucleotides around the transcription start site (TSS) in the TERT gene locus. Collectively, TAF-I is involved in the maintenance of telomere DNA through the regulation of TERT transcription, then consequently the occurrence and/or recurrence of cancer cells.
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Affiliation(s)
- Kohsuke Kato
- Department of Infection Biology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8575, Japan.
| | - Atsushi Kawaguchi
- Department of Infection Biology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8575, Japan.,Transborder Medical Research Center, University of Tsukuba, Tsukuba, Japan.,Microbiology Research Center for Sustainability, University of Tsukuba, Tsukuba, Japan
| | - Kyosuke Nagata
- Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.
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29
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González‐Arzola K, Guerra‐Castellano A, Rivero‐Rodríguez F, Casado‐Combreras MÁ, Pérez‐Mejías G, Díaz‐Quintana A, Díaz‐Moreno I, De la Rosa MA. Mitochondrial cytochrome c shot towards histone chaperone condensates in the nucleus. FEBS Open Bio 2021; 11:2418-2440. [PMID: 33938164 PMCID: PMC8409293 DOI: 10.1002/2211-5463.13176] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 04/26/2021] [Indexed: 12/15/2022] Open
Abstract
Despite mitochondria being key for the control of cell homeostasis and fate, their role in DNA damage response is usually just regarded as an apoptotic trigger. However, growing evidence points to mitochondrial factors modulating nuclear functions. Remarkably, after DNA damage, cytochrome c (Cc) interacts in the cell nucleus with a variety of well-known histone chaperones, whose activity is competitively inhibited by the haem protein. As nuclear Cc inhibits the nucleosome assembly/disassembly activity of histone chaperones, it might indeed affect chromatin dynamics and histone deposition on DNA. Several histone chaperones actually interact with Cc Lys residues through their acidic regions, which are also involved in heterotypic interactions leading to liquid-liquid phase transitions responsible for the assembly of nuclear condensates, including heterochromatin. This relies on dynamic histone-DNA interactions that can be modulated by acetylation of specific histone Lys residues. Thus, Cc may have a major regulatory role in DNA repair by fine-tuning nucleosome assembly activity and likely nuclear condensate formation.
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Affiliation(s)
- Katiuska González‐Arzola
- Institute for Chemical Research (IIQ)Scientific Research Centre Isla de la Cartuja (cicCartuja)University of Seville – CSICSpain
| | - Alejandra Guerra‐Castellano
- Institute for Chemical Research (IIQ)Scientific Research Centre Isla de la Cartuja (cicCartuja)University of Seville – CSICSpain
| | - Francisco Rivero‐Rodríguez
- Institute for Chemical Research (IIQ)Scientific Research Centre Isla de la Cartuja (cicCartuja)University of Seville – CSICSpain
| | - Miguel Á. Casado‐Combreras
- Institute for Chemical Research (IIQ)Scientific Research Centre Isla de la Cartuja (cicCartuja)University of Seville – CSICSpain
| | - Gonzalo Pérez‐Mejías
- Institute for Chemical Research (IIQ)Scientific Research Centre Isla de la Cartuja (cicCartuja)University of Seville – CSICSpain
| | - Antonio Díaz‐Quintana
- Institute for Chemical Research (IIQ)Scientific Research Centre Isla de la Cartuja (cicCartuja)University of Seville – CSICSpain
| | - Irene Díaz‐Moreno
- Institute for Chemical Research (IIQ)Scientific Research Centre Isla de la Cartuja (cicCartuja)University of Seville – CSICSpain
| | - Miguel A. De la Rosa
- Institute for Chemical Research (IIQ)Scientific Research Centre Isla de la Cartuja (cicCartuja)University of Seville – CSICSpain
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30
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Harikumar A, Lim PSL, Nissim-Rafinia M, Park JE, Sze SK, Meshorer E. Embryonic Stem Cell Differentiation Is Regulated by SET through Interactions with p53 and β-Catenin. Stem Cell Reports 2021; 15:1260-1274. [PMID: 33296674 PMCID: PMC7724474 DOI: 10.1016/j.stemcr.2020.11.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 11/07/2020] [Accepted: 11/09/2020] [Indexed: 02/07/2023] Open
Abstract
The multifunctional histone chaperone, SET, is essential for embryonic development in the mouse. Previously, we identified SET as a factor that is rapidly downregulated during embryonic stem cell (ESC) differentiation, suggesting a possible role in the maintenance of pluripotency. Here, we explore SET's function in early differentiation. Using immunoprecipitation coupled with protein quantitation by LC-MS/MS, we uncover factors and complexes, including P53 and β-catenin, by which SET regulates lineage specification. Knockdown for P53 in SET-knockout (KO) ESCs partially rescues lineage marker misregulation during differentiation. Paradoxically, SET-KO ESCs show increased expression of several Wnt target genes despite reduced levels of active β-catenin. Further analysis of RNA sequencing datasets hints at a co-regulatory relationship between SET and TCF proteins, terminal effectors of Wnt signaling. Overall, we discover a role for both P53 and β-catenin in SET-regulated early differentiation and raise a hypothesis for SET function at the β-catenin-TCF regulatory axis.
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Affiliation(s)
- Arigela Harikumar
- Department of Genetics, The Institute of Life Sciences, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Patrick S L Lim
- Department of Genetics, The Institute of Life Sciences, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Malka Nissim-Rafinia
- Department of Genetics, The Institute of Life Sciences, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Jung Eun Park
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore
| | - Siu Kwan Sze
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore
| | - Eran Meshorer
- Department of Genetics, The Institute of Life Sciences, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel; The Edmond and Lily Safra Center for Brain Sciences, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel.
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Jos S, Gogoi H, Prasad TK, Hurakadli MA, Kamariah N, Padmanabhan B, Padavattan S. Molecular insights into α-synuclein interaction with individual human core histones, linker histone, and dsDNA. Protein Sci 2021; 30:2121-2131. [PMID: 34382268 DOI: 10.1002/pro.4167] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 06/26/2021] [Accepted: 08/04/2021] [Indexed: 12/28/2022]
Abstract
α-Synuclein (αS) plays a key role in Parkinson's disease (PD). The αS nuclear role, its binding affinity and specificity to histones and dsDNA remains unknown. Here, we have measured the binding affinity ( K d ) between αS wild-type (wt) and PD-specific αS S129-phosphorylation mimicking (S129E) mutant with full-length and flexible tail truncated individual core histones (H2a, H2b, H3, and H4), linker histone (H1), and carried out αS-dsDNA interaction studies. This study revealed that αS(wt) interacts specifically with N-terminal flexible tails of histone H3, H4, and flexible tails of H1. The αS(S129E) mutant recognizes histones similar to αS(wt) but binds with higher affinity. Intriguingly, αS(S129E) showed a binding affinity for control proteins (bovine serum albumin and lysozyme), while no interaction was seen for αS(wt). Based on our above observation, we contemplate that the physio-chemical properties of αS with S129-phosphorylation has changed compared to αS(wt), resulting in interaction for other proteins, which is the basis for Lewy body formation. Besides, this study showed αS binding to dsDNA is weak and nonspecific. Overall, αS specificity for histone binding suggests that its nuclear role is possibly driven through histone interaction.
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Affiliation(s)
- Sneha Jos
- Department of Biophysics, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Hemanga Gogoi
- Department of Biophysics, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Thazhe Kootteri Prasad
- Center for Chemical Biology & Therapeutics, Institute for Stem Cell Science and Regenerative Medicine, Bangalore, India
| | - Manjunath A Hurakadli
- Center for Chemical Biology & Therapeutics, Institute for Stem Cell Science and Regenerative Medicine, Bangalore, India
| | - Neelagandan Kamariah
- Center for Chemical Biology & Therapeutics, Institute for Stem Cell Science and Regenerative Medicine, Bangalore, India
| | - Balasundaram Padmanabhan
- Department of Biophysics, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Sivaraman Padavattan
- Department of Biophysics, National Institute of Mental Health and Neurosciences, Bangalore, India
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Höllmüller E, Greiner K, Kienle SM, Scheffner M, Marx A, Stengel F. Interactome of Site-Specifically Acetylated Linker Histone H1. J Proteome Res 2021; 20:4443-4451. [PMID: 34351766 DOI: 10.1021/acs.jproteome.1c00396] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Linker histone H1 plays a key role in chromatin organization and maintenance, yet our knowledge of the regulation of H1 functions by post-translational modifications is rather limited. In this study, we report on the generation of site-specifically mono- and di-acetylated linker histone H1.2 by genetic code expansion. We used these modified histones to identify and characterize the acetylation-dependent cellular interactome of H1.2 by affinity purification mass spectrometry and show that site-specific acetylation results in overlapping but distinct groups of interacting partners. Among these, we find multiple translational initiation factors and transcriptional regulators such as the NAD+-dependent deacetylase SIRT1, which we demonstrate to act on acetylated H1.2. Taken together, our data suggest that site-specific acetylation of H1.2 plays a role in modulating protein-protein interactions.
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Serifi I, Besta S, Karetsou Z, Giardoglou P, Beis D, Niewiadomski P, Papamarcaki T. Targeting of SET/I2PP2A oncoprotein inhibits Gli1 transcription revealing a new modulator of Hedgehog signaling. Sci Rep 2021; 11:13940. [PMID: 34230583 PMCID: PMC8260731 DOI: 10.1038/s41598-021-93440-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 06/18/2021] [Indexed: 01/17/2023] Open
Abstract
The Hedgehog (Hh)/Gli signaling pathway controls cell proliferation and differentiation, is critical for the development of nearly every tissue and organ in vertebrates and is also involved in tumorigenesis. In this study, we characterize the oncoprotein SET/I2PP2A as a novel regulator of Hh signaling. Our previous work has shown that the zebrafish homologs of SET are expressed during early development and localized in the ciliated organs. In the present work, we show that CRISPR/Cas9-mediated knockdown of setb gene in zebrafish embryos resulted in cyclopia, a characteristic patterning defect previously reported in Hh mutants. Consistent with these findings, targeting setb gene using CRISPR/Cas9 or a setb morpholino, reduced Gli1-dependent mCherry expression in the Hedgehog reporter zebrafish line Tg(12xGliBS:mCherry-NLS). Likewise, SET loss of function by means of pharmacological inhibition and gene knockdown prevented the increase of Gli1 expression in mammalian cells in vitro. Conversely, overexpression of SET resulted in an increase of the expression of a Gli-dependent luciferase reporter, an effect likely attributable to the relief of the Sufu-mediated inhibition of Gli1. Collectively, our data support the involvement of SET in Gli1-mediated transcription and suggest the oncoprotein SET/I2PP2A as a new modulator of Hedgehog signaling.
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Affiliation(s)
- Iliana Serifi
- Laboratory of Biological Chemistry, Medical Department, School of Health Sciences, University of Ioannina, 451 10, Ioannina, Greece.,Department of Biomedical Research, Foundation for Research and Technology-Hellas, Institute of Molecular Biology and Biotechnology, 451 10, Ioannina, Greece
| | - Simoni Besta
- Laboratory of Biological Chemistry, Medical Department, School of Health Sciences, University of Ioannina, 451 10, Ioannina, Greece
| | - Zoe Karetsou
- Laboratory of Biological Chemistry, Medical Department, School of Health Sciences, University of Ioannina, 451 10, Ioannina, Greece
| | - Panagiota Giardoglou
- Developmental Biology, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation Academy of Athens, 115 27, Athens, Greece
| | - Dimitris Beis
- Developmental Biology, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation Academy of Athens, 115 27, Athens, Greece
| | | | - Thomais Papamarcaki
- Laboratory of Biological Chemistry, Medical Department, School of Health Sciences, University of Ioannina, 451 10, Ioannina, Greece. .,Department of Biomedical Research, Foundation for Research and Technology-Hellas, Institute of Molecular Biology and Biotechnology, 451 10, Ioannina, Greece.
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Dacol EC, Wang S, Chen Y, Lepique AP. The interaction of SET and protein phosphatase 2A as target for cancer therapy. Biochim Biophys Acta Rev Cancer 2021; 1876:188578. [PMID: 34116173 DOI: 10.1016/j.bbcan.2021.188578] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/31/2021] [Accepted: 05/31/2021] [Indexed: 11/16/2022]
Abstract
In cancer cells, tumor suppressor proteins loss-of-function are usually the result of genetic mutations. Protein Phosphatase 2A is a tumor suppressor that inactivates several signaling pathways through removal of phosphate residues important for other proteins stability and/or activation. Different from other tumor suppressors, PP2A is, in many cancer types, inactivated by endogenous inhibitors. In physiological conditions, these inhibitors are important to balance PP2A activity. However, in cancer cells, overexpression of these inhibitors can keep PP2A inactive, resulting in sustained activation of mitogenic signaling pathways and transcription factors, metabolic reprogramming, with the resulting cancer progression and the resistance to anti-cancer therapies. One of these endogenous inhibitors is the protein SET (SE Translocation). SET is a multifunctional protein, which high expression has been associated with several types of cancer, as well as other diseases such as Alzheimer's disease. Disruption of the interaction between SET and PP2A to rescue the activity of PP2A may represent a new therapeutic strategy and opportunity for cancer treatment. This review brings up-to-date advances on the interactions between SET and PP2A and their biological consequences. Moreover, we review reported inhibitors of SET-PP2A interaction under investigation as therapeutic opportunities for the treatment of cancers.
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Affiliation(s)
- E C Dacol
- Department of Immunology, Instituto de Ciências Biomédicas, Universidade de São Paulo, Av.Prof. Lineu Prestes, 1730, room 136, Biomedicas IV Building, São Paulo CEP 05508-000, SP, Brazil
| | - S Wang
- Laboratory of Chemical Biology, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, China
| | - Y Chen
- Laboratory of Chemical Biology, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, China.
| | - A P Lepique
- Department of Immunology, Instituto de Ciências Biomédicas, Universidade de São Paulo, Av.Prof. Lineu Prestes, 1730, room 136, Biomedicas IV Building, São Paulo CEP 05508-000, SP, Brazil.
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Qu J, Yang SZ, Zhu Y, Guo T, Thannickal VJ, Zhou Y. Targeting mechanosensitive MDM4 promotes lung fibrosis resolution in aged mice. J Exp Med 2021; 218:e20202033. [PMID: 33688918 PMCID: PMC7953267 DOI: 10.1084/jem.20202033] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 12/18/2020] [Accepted: 01/21/2021] [Indexed: 12/15/2022] Open
Abstract
Aging is a strong risk factor and an independent prognostic factor for progressive human idiopathic pulmonary fibrosis (IPF). Aged mice develop nonresolving pulmonary fibrosis following lung injury. In this study, we found that mouse double minute 4 homolog (MDM4) is highly expressed in the fibrotic lesions of human IPF and experimental pulmonary fibrosis in aged mice. We identified MDM4 as a matrix stiffness-regulated endogenous inhibitor of p53. Reducing matrix stiffness down-regulates MDM4 expression, resulting in p53 activation in primary lung myofibroblasts isolated from IPF patients. Gain of p53 function activates a gene program that sensitizes lung myofibroblasts to apoptosis and promotes the clearance of apoptotic myofibroblasts by macrophages. Destiffening of the fibrotic lung matrix by targeting nonenzymatic cross-linking or genetic ablation of Mdm4 in lung (myo)fibroblasts activates the Mdm4-p53 pathway and promotes lung fibrosis resolution in aged mice. These findings suggest that mechanosensitive MDM4 is a molecular target with promising therapeutic potential against persistent lung fibrosis associated with aging.
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Affiliation(s)
- Jing Qu
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Shan-Zhong Yang
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Yi Zhu
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Ting Guo
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL
- The Second Xiangya Hospital, Central-South University, Changsha, Hunan, China
| | - Victor J. Thannickal
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Yong Zhou
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL
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Panagopoulos I, Heim S. Interstitial Deletions Generating Fusion Genes. Cancer Genomics Proteomics 2021; 18:167-196. [PMID: 33893073 DOI: 10.21873/cgp.20251] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/15/2021] [Accepted: 03/16/2021] [Indexed: 12/16/2022] Open
Abstract
A fusion gene is the physical juxtaposition of two different genes resulting in a structure consisting of the head of one gene and the tail of the other. Gene fusion is often a primary neoplasia-inducing event in leukemias, lymphomas, solid malignancies as well as benign tumors. Knowledge about fusion genes is crucial not only for our understanding of tumorigenesis, but also for the diagnosis, prognostication, and treatment of cancer. Balanced chromosomal rearrangements, in particular translocations and inversions, are the most frequent genetic events leading to the generation of fusion genes. In the present review, we summarize the existing knowledge on chromosome deletions as a mechanism for fusion gene formation. Such deletions are mostly submicroscopic and, hence, not detected by cytogenetic analyses but by array comparative genome hybridization (aCGH) and/or high throughput sequencing (HTS). They are found across the genome in a variety of neoplasias. As tumors are increasingly analyzed using aCGH and HTS, it is likely that more interstitial deletions giving rise to fusion genes will be found, significantly impacting our understanding and treatment of cancer.
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Affiliation(s)
- Ioannis Panagopoulos
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway;
| | - Sverre Heim
- Section for Cancer Cytogenetics, Institute for Cancer Genetics and Informatics, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
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Pronobis MI, Zheng S, Singh SP, Goldman JA, Poss KD. In vivo proximity labeling identifies cardiomyocyte protein networks during zebrafish heart regeneration. eLife 2021; 10:e66079. [PMID: 33764296 PMCID: PMC8034980 DOI: 10.7554/elife.66079] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 03/25/2021] [Indexed: 01/04/2023] Open
Abstract
Strategies have not been available until recently to uncover interacting protein networks specific to key cell types, their subcellular compartments, and their major regulators during complex in vivo events. Here, we apply BioID2 proximity labeling to capture protein networks acting within cardiomyocytes during a key model of innate heart regeneration in zebrafish. Transgenic zebrafish expressing a promiscuous BirA2 localized to the entire myocardial cell or membrane compartment were generated, each identifying distinct proteomes in adult cardiomyocytes that became altered during regeneration. BioID2 profiling for interactors with ErbB2, a co-receptor for the cardiomyocyte mitogen Nrg1, implicated Rho A as a target of ErbB2 signaling in cardiomyocytes. Blockade of Rho A during heart regeneration, or during cardiogenic stimulation by the mitogenic influences Nrg1, Vegfaa, or vitamin D, disrupted muscle creation. Our findings reveal proximity labeling as a useful resource to interrogate cell proteomes and signaling networks during tissue regeneration in zebrafish.
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Affiliation(s)
- Mira I Pronobis
- Department of Cell Biology, Duke University Medical CenterDurhamUnited States
- Regeneration Next, Duke UniversityDurhamUnited States
| | - Susan Zheng
- Department of Cell Biology, Duke University Medical CenterDurhamUnited States
| | | | - Joseph A Goldman
- Department of Biological Chemistry and Pharmacology, The Ohio State University Medical CenterColumbusUnited States
| | - Kenneth D Poss
- Department of Cell Biology, Duke University Medical CenterDurhamUnited States
- Regeneration Next, Duke UniversityDurhamUnited States
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Nikolac Perkovic M, Videtic Paska A, Konjevod M, Kouter K, Svob Strac D, Nedic Erjavec G, Pivac N. Epigenetics of Alzheimer's Disease. Biomolecules 2021; 11:biom11020195. [PMID: 33573255 PMCID: PMC7911414 DOI: 10.3390/biom11020195] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/19/2021] [Accepted: 01/26/2021] [Indexed: 02/07/2023] Open
Abstract
There are currently no validated biomarkers which can be used to accurately diagnose Alzheimer’s disease (AD) or to distinguish it from other dementia-causing neuropathologies. Moreover, to date, only symptomatic treatments exist for this progressive neurodegenerative disorder. In the search for new, more reliable biomarkers and potential therapeutic options, epigenetic modifications have emerged as important players in the pathogenesis of AD. The aim of the article was to provide a brief overview of the current knowledge regarding the role of epigenetics (including mitoepigenetics) in AD, and the possibility of applying these advances for future AD therapy. Extensive research has suggested an important role of DNA methylation and hydroxymethylation, histone posttranslational modifications, and non-coding RNA regulation (with the emphasis on microRNAs) in the course and development of AD. Recent studies also indicated mitochondrial DNA (mtDNA) as an interesting biomarker of AD, since dysfunctions in the mitochondria and lower mtDNA copy number have been associated with AD pathophysiology. The current evidence suggests that epigenetic changes can be successfully detected, not only in the central nervous system, but also in the cerebrospinal fluid and on the periphery, contributing further to their potential as both biomarkers and therapeutic targets in AD.
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Affiliation(s)
- Matea Nikolac Perkovic
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Ruder Boskovic Institute, HR-10000 Zagreb, Croatia; (M.N.P.); (M.K.); (D.S.S.); (G.N.E.)
| | - Alja Videtic Paska
- Medical Center for Molecular Biology, Institute of Biochemistry and Molecular Genetics, Faculty of Medicine, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (A.V.P.); (K.K.)
| | - Marcela Konjevod
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Ruder Boskovic Institute, HR-10000 Zagreb, Croatia; (M.N.P.); (M.K.); (D.S.S.); (G.N.E.)
| | - Katarina Kouter
- Medical Center for Molecular Biology, Institute of Biochemistry and Molecular Genetics, Faculty of Medicine, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (A.V.P.); (K.K.)
| | - Dubravka Svob Strac
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Ruder Boskovic Institute, HR-10000 Zagreb, Croatia; (M.N.P.); (M.K.); (D.S.S.); (G.N.E.)
| | - Gordana Nedic Erjavec
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Ruder Boskovic Institute, HR-10000 Zagreb, Croatia; (M.N.P.); (M.K.); (D.S.S.); (G.N.E.)
| | - Nela Pivac
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Ruder Boskovic Institute, HR-10000 Zagreb, Croatia; (M.N.P.); (M.K.); (D.S.S.); (G.N.E.)
- Correspondence: ; Tel.: +38-514-571-207
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Gao MG, Hong Y, Qin YZ, Chang YJ, Wang Y, Zhang XH, Xu LP, Huang XJ, Zhao XS. Prognostic significance of SET-NUP214 fusion gene in acute leukemia after allogeneic hematopoietic stem cell transplantation. Medicine (Baltimore) 2020; 99:e23569. [PMID: 33327316 PMCID: PMC7738098 DOI: 10.1097/md.0000000000023569] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The SET nuclear proto-oncogene (SET)-nucleoporin (NUP) 214 fusion gene (SET-NUP214) is a rare leukemia fusion gene. Due to the limited number of samples with SET-NUP214 fusion gene in previous studies, the significance of SET-NUP214 for measurable residual disease (MRD) monitoring in patients with acute leukemia (AL) is still unclear. Our study aimed to observe the dynamic changes in SET-NUP214 expression before and after allogeneic hematopoietic stem cell transplantation (allo-HSCT), and analyzed whether SET-NUP214 could be used to evaluate MRD status. Our study included 24 AL patients who were newly diagnosed with SET-NUP214 fusion gene and they all received allo-HSCT. Their MRD was evaluated by monitoring SET-NUP214 fusion gene and leukemia-associated immunophenotype (LAIP). The median follow-up time was 501 days (56-2208 days). Of the enrolled patients, 6 (25%) patients died, including 3 (12.5%) patients died of leukemia relapse. Total 5 (20.8%) patients experienced hematological relapse at a median of 225 days (56-1057 days) post-transplantation. The SET-NUP214 median expression level at diagnosis was 405.1% (14.6%-1482.4%). SET-NUP214 gene expression generally became positive prior to flow cytometry results. In addition, the Kaplan-Meier survival curves analysis showed that those who had SET-NUP214 positive (SET-NUP214+) post-transplantation had a higher 2-year cumulative incidence of leukemia relapse (CIR) of 43.7 ± 18.8% (P < .05). However, there was no significant difference between SET-NUP214 positive and SET-NUP214 negative patients with regard to their 2-year overall survival (OS) (82.5 ± 11.3 vs 64.6 ± 17.5%, respectively, P = .271). ROC curve analysis turned out that the area under the ROC curve (AUC) was 0.916 (95% CI: 0.784-1.0; P = .005). In conclusion, SET-NUP214 fusion gene determined by real-time quantitative reverse transcriptase polymerase chain reaction (RQ-PCR) could be used to evaluate MRD status after allo-HSCT. Patients with positive SET-NUP214 expression after transplantation will have a poor prognosis.
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Affiliation(s)
- Meng-Ge Gao
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell
| | - Yan Hong
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell
| | - Ya-Zhen Qin
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell
| | - Ying-Jun Chang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell
- Collaborative Innovation Center of Hematology, Peking University, China
| | - Yu Wang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell
- Collaborative Innovation Center of Hematology, Peking University, China
| | - Xiao-Hui Zhang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell
- Collaborative Innovation Center of Hematology, Peking University, China
| | - Lan-Ping Xu
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell
- Collaborative Innovation Center of Hematology, Peking University, China
| | - Xiao-Jun Huang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell
- Peking-Tsinghua Center for Life Sciences, Beijing
- Research Unit of Key Technique for Diagnosis and Treatments of Hematologic Malignancies, Chinese Academy of Medical Sciences
- Collaborative Innovation Center of Hematology, Peking University, China
| | - Xiao-Su Zhao
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell
- Research Unit of Key Technique for Diagnosis and Treatments of Hematologic Malignancies, Chinese Academy of Medical Sciences
- Collaborative Innovation Center of Hematology, Peking University, China
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Flora P, Ezhkova E. Regulatory mechanisms governing epidermal stem cell function during development and homeostasis. Development 2020; 147:147/22/dev194100. [PMID: 33191273 DOI: 10.1242/dev.194100] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cell divisions and cell-fate decisions require stringent regulation for proper tissue development and homeostasis. The mammalian epidermis is a highly organized tissue structure that is sustained by epidermal stem cells (ESCs) that balance self-renewal and cell-fate decisions to establish a protective barrier, while replacing dying cells during homeostasis and in response to injury. Extensive work over past decades has provided insights into the regulatory mechanisms that control ESC specification, self-renewal and maintenance during different stages of the lifetime of an organism. In this Review, we discuss recent findings that have furthered our understanding of key regulatory features that allow ESCs to establish a functional barrier during development and to maintain tissue homeostasis in adults.
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Affiliation(s)
- Pooja Flora
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Elena Ezhkova
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
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41
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Synergic effect of OP449 and FTY720 on oral squamous cell carcinoma. Eur J Pharmacol 2020; 882:173268. [DOI: 10.1016/j.ejphar.2020.173268] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 06/05/2020] [Accepted: 06/08/2020] [Indexed: 02/07/2023]
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An Z, Yin L, Liu Y, Peng M, Shen WH, Dong A. The histone methylation readers MRG1/MRG2 and the histone chaperones NRP1/NRP2 associate in fine-tuning Arabidopsis flowering time. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 103:1010-1024. [PMID: 32324922 DOI: 10.1111/tpj.14780] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 03/31/2020] [Indexed: 06/11/2023]
Abstract
Histones are highly basic proteins involved in packaging DNA into chromatin, and histone modifications are fundamental in epigenetic regulation in eukaryotes. Among the numerous chromatin modifiers identified in Arabidopsis (Arabidopsis thaliana), MORF-RELATED GENE (MRG)1 and MRG2 have redundant functions in reading histone H3 lysine 36 trimethylation (H3K36me3). Here, we show that MRG2 binds histone chaperones belonging to the NUCLEOSOME ASSEMBLY PROTEIN 1 (NAP1) family, including NAP1-RELATED PROTEIN (NRP)1 and NRP2. Characterization of the loss-of-function mutants mrg1 mrg2, nrp1 nrp2 and mrg1 mrg2 nrp1 nrp2 revealed that MRG1/MRG2 and NRP1/NRP2 regulate flowering time through fine-tuning transcription of floral genes by distinct molecular mechanisms. In particular, the physical interaction between NRP1/NRP2 and MRG1/MRG2 inhibited the binding of MRG1/MRG2 to the transcription factor CONSTANS (CO), leading to a transcriptional repression of FLOWERING LOCUS T (FT) through impeded H4K5 acetylation (H4K5ac) within the FT chromatin. By contrast, NRP1/NRP2 and MRG1/MRG2 act together, likely in a multiprotein complex manner, in promoting the transcription of FLOWERING LOCUS C (FLC) via an increase of both H4K5ac and H3K9ac in the FLC chromatin. Because the expression pattern of FLC represents the major category of differentially expressed genes identified by genome-wide RNA-sequencing analysis in the mrg1 mrg2, nrp1 nrp2 and mrg1 mrg2 nrp1 nrp2 mutants, it is reasonable to speculate that the NRP1/NRP2-MRG1/MRG2 complex may be involved in transcriptional activation of genes beyond FLC and flowering time control.
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Affiliation(s)
- Zengxuan An
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, Department of Biochemistry, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Liufan Yin
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, Department of Biochemistry, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Yuhao Liu
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, Department of Biochemistry, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Maolin Peng
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, Department of Biochemistry, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Wen-Hui Shen
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, Department of Biochemistry, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, 200438, China
- Universitè de Strasbourg, CNRS, IBMP UPR 2357, Strasbourg, F-67000, France
| | - Aiwu Dong
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, International Associated Laboratory of CNRS-Fudan-HUNAU on Plant Epigenome Research, Department of Biochemistry, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, 200438, China
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Mendes A, Jühlen R, Bousbata S, Fahrenkrog B. Disclosing the Interactome of Leukemogenic NUP98-HOXA9 and SET-NUP214 Fusion Proteins Using a Proteomic Approach. Cells 2020; 9:E1666. [PMID: 32664447 PMCID: PMC7407662 DOI: 10.3390/cells9071666] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/07/2020] [Accepted: 07/07/2020] [Indexed: 02/07/2023] Open
Abstract
The interaction of oncogenes with cellular proteins is a major determinant of cellular transformation. The NUP98-HOXA9 and SET-NUP214 chimeras result from recurrent chromosomal translocations in acute leukemia. Functionally, the two fusion proteins inhibit nuclear export and interact with epigenetic regulators. The full interactome of NUP98-HOXA9 and SET-NUP214 is currently unknown. We used proximity-dependent biotin identification (BioID) to study the landscape of the NUP98-HOXA9 and SET-NUP214 environments. Our results suggest that both fusion proteins interact with major regulators of RNA processing, with translation-associated proteins, and that both chimeras perturb the transcriptional program of the tumor suppressor p53. Other cellular processes appear to be distinctively affected by the particular fusion protein. NUP98-HOXA9 likely perturbs Wnt, MAPK, and estrogen receptor (ER) signaling pathways, as well as the cytoskeleton, the latter likely due to its interaction with the nuclear export receptor CRM1. Conversely, mitochondrial proteins and metabolic regulators are significantly overrepresented in the SET-NUP214 proximal interactome. Our study provides new clues on the mechanistic actions of nucleoporin fusion proteins and might be of particular relevance in the search for new druggable targets for the treatment of nucleoporin-related leukemia.
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Affiliation(s)
- Adélia Mendes
- Institute of Molecular Biology and Medicine, Université Libre de Bruxelles, 6041 Charleroi, Belgium; (R.J.); (S.B.)
| | - Ramona Jühlen
- Institute of Molecular Biology and Medicine, Université Libre de Bruxelles, 6041 Charleroi, Belgium; (R.J.); (S.B.)
- Present address: Institute of Biochemistry and Molecular Cell Biology, RWTH Aachen University, 52074 Aachen, Germany
| | - Sabrina Bousbata
- Institute of Molecular Biology and Medicine, Université Libre de Bruxelles, 6041 Charleroi, Belgium; (R.J.); (S.B.)
| | - Birthe Fahrenkrog
- Institute of Molecular Biology and Medicine, Université Libre de Bruxelles, 6041 Charleroi, Belgium; (R.J.); (S.B.)
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Mandemaker IK, Zhou D, Bruens ST, Dekkers DH, Verschure PJ, Edupuganti RR, Meshorer E, Demmers JAA, Marteijn JA. Histone H1 eviction by the histone chaperone SET reduces cell survival following DNA damage. J Cell Sci 2020; 133:jcs235473. [PMID: 32184266 DOI: 10.1242/jcs.235473] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 02/27/2020] [Indexed: 08/31/2023] Open
Abstract
Many chromatin remodeling and modifying proteins are involved in the DNA damage response, where they stimulate repair or induce DNA damage signaling. Interestingly, we identified that downregulation of the histone H1 (H1)-interacting protein SET results in increased resistance to a wide variety of DNA damaging agents. We found that this increased resistance does not result from alleviation of an inhibitory effect of SET on DNA repair but, rather, is the consequence of a suppressed apoptotic response to DNA damage. Furthermore, we provide evidence that the histone chaperone SET is responsible for the eviction of H1 from chromatin. Knockdown of H1 in SET-depleted cells resulted in re-sensitization of cells to DNA damage, suggesting that the increased DNA damage resistance in SET-depleted cells is the result of enhanced retention of H1 on chromatin. Finally, clonogenic survival assays showed that SET and p53 act epistatically in the attenuation of DNA damage-induced cell death. Taken together, our data indicate a role for SET in the DNA damage response as a regulator of cell survival following genotoxic stress.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Imke K Mandemaker
- Erasmus MC, University Medical Center Rotterdam, Department of Molecular Genetics, Oncode Institute, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands
| | - Di Zhou
- Erasmus MC, University Medical Center Rotterdam, Department of Molecular Genetics, Oncode Institute, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands
| | - Serena T Bruens
- Erasmus MC, University Medical Center Rotterdam, Department of Molecular Genetics, Oncode Institute, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands
| | - Dick H Dekkers
- Proteomics Center, Erasmus University Medical Center, 3015 CN Rotterdam, The Netherlands
| | - Pernette J Verschure
- Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Raghu R Edupuganti
- The Department of Genetics, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Edmond J. Safra campus, 91904 Jerusalem, Israel
| | - Eran Meshorer
- The Department of Genetics, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Edmond J. Safra campus, 91904 Jerusalem, Israel
- The Edmond and Lily Safra Center for Brain Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Jeroen A A Demmers
- Proteomics Center, Erasmus University Medical Center, 3015 CN Rotterdam, The Netherlands
| | - Jurgen A Marteijn
- Erasmus MC, University Medical Center Rotterdam, Department of Molecular Genetics, Oncode Institute, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands
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45
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Sousa LO, Sobral LM, de Almeida LO, Garcia CB, Greene LJ, Leopoldino AM. SET protein modulates H4 histone methylation status and regulates miR-137 level in oral squamous cell carcinoma. Epigenomics 2020; 12:475-485. [PMID: 32267167 DOI: 10.2217/epi-2019-0181] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Aim: Histone acetylation and methylation control gene expression. We investigated the impact of SET knockdown on histone methylation status and the consequences for the miRNAs levels in oral squamous cell carcinoma (OSCC). Methods: OSCC cells with and without SET knockdown were analyzed by quantitative real-time PCR to determine miRNA levels, and by immunoreactions to histone modifications. Results: The knockdown of SET increased the levels of histone H4K20me2 and miR-137. Still, SET protein binds to the miR-137 promoter region. The transfection of miR-137 mimic reduced the KI67 and Rb proteins and proliferation of OSCC cells. Conclusion: Our results show for the first time a relationship between SET and histone methylation associated with the control of miRNA expression and KI67 and Rb as targets of miR-137 in OSCC.
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Affiliation(s)
- Lucas Oliveira Sousa
- Department of Clinical Analyses, Toxicology & Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil.,Department of Cell & Molecular Biology & Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Lays Martin Sobral
- Department of Clinical Analyses, Toxicology & Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | | | - Cristiana Bernadelli Garcia
- Department of Clinical Analyses, Toxicology & Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Lewis Joel Greene
- Department of Cell & Molecular Biology & Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,CEPID/CTC, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Andréia Machado Leopoldino
- Department of Clinical Analyses, Toxicology & Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil.,CEPID/CTC, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
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Kauko O, Imanishi SY, Kulesskiy E, Yetukuri L, Laajala TD, Sharma M, Pavic K, Aakula A, Rupp C, Jumppanen M, Haapaniemi P, Ruan L, Yadav B, Suni V, Varila T, Corthals GL, Reimand J, Wennerberg K, Aittokallio T, Westermarck J. Phosphoproteome and drug-response effects mediated by the three protein phosphatase 2A inhibitor proteins CIP2A, SET, and PME-1. J Biol Chem 2020; 295:4194-4211. [PMID: 32071079 PMCID: PMC7105317 DOI: 10.1074/jbc.ra119.011265] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 02/03/2020] [Indexed: 12/15/2022] Open
Abstract
Protein phosphatase 2A (PP2A) critically regulates cell signaling and is a human tumor suppressor. PP2A complexes are modulated by proteins such as cancerous inhibitor of protein phosphatase 2A (CIP2A), protein phosphatase methylesterase 1 (PME-1), and SET nuclear proto-oncogene (SET) that often are deregulated in cancers. However, how they impact cellular phosphorylation and how redundant they are in cellular regulation is poorly understood. Here, we conducted a systematic phosphoproteomics screen for phosphotargets modulated by siRNA-mediated depletion of CIP2A, PME-1, and SET (to reactivate PP2A) or the scaffolding A-subunit of PP2A (PPP2R1A) (to inhibit PP2A) in HeLa cells. We identified PP2A-modulated targets in diverse cellular pathways, including kinase signaling, cytoskeleton, RNA splicing, DNA repair, and nuclear lamina. The results indicate nonredundancy among CIP2A, PME-1, and SET in phosphotarget regulation. Notably, PP2A inhibition or reactivation affected largely distinct phosphopeptides, introducing a concept of nonoverlapping phosphatase inhibition- and activation-responsive sites (PIRS and PARS, respectively). This phenomenon is explained by the PPP2R1A inhibition impacting primarily dephosphorylated threonines, whereas PP2A reactivation results in dephosphorylation of clustered and acidophilic sites. Using comprehensive drug-sensitivity screening in PP2A-modulated cells to evaluate the functional impact of PP2A across diverse cellular pathways targeted by these drugs, we found that consistent with global phosphoproteome effects, PP2A modulations broadly affect responses to more than 200 drugs inhibiting a broad spectrum of cancer-relevant targets. These findings advance our understanding of the phosphoproteins, pharmacological responses, and cellular processes regulated by PP2A modulation and may enable the development of combination therapies.
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Affiliation(s)
- Otto Kauko
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20500 Turku, Finland; Institute of Biomedicine, University of Turku, 20500 Turku, Finland; TuBS and TuDMM Doctoral Programmes, University of Turku, 20500 Turku, Finland
| | - Susumu Y Imanishi
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20500 Turku, Finland
| | - Evgeny Kulesskiy
- Institute for Molecular Medicine Finland FIMM, University of Helsinki, Tukholmankatu 8, Helsinki, Finland
| | - Laxman Yetukuri
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20500 Turku, Finland
| | - Teemu Daniel Laajala
- Institute for Molecular Medicine Finland FIMM, University of Helsinki, Tukholmankatu 8, Helsinki, Finland; Department of Mathematics and Statistics, University of Turku, 20500 Turku, Finland
| | - Mukund Sharma
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20500 Turku, Finland; Institute of Biomedicine, University of Turku, 20500 Turku, Finland; TuBS and TuDMM Doctoral Programmes, University of Turku, 20500 Turku, Finland
| | - Karolina Pavic
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20500 Turku, Finland
| | - Anna Aakula
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20500 Turku, Finland
| | - Christian Rupp
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20500 Turku, Finland
| | - Mikael Jumppanen
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20500 Turku, Finland
| | - Pekka Haapaniemi
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20500 Turku, Finland
| | - Luyao Ruan
- Computational Biology Program, Ontario Institute for Cancer Research, Toronto, Ontario M5G 0A3, Canada
| | - Bhagwan Yadav
- Institute for Molecular Medicine Finland FIMM, University of Helsinki, Tukholmankatu 8, Helsinki, Finland
| | - Veronika Suni
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20500 Turku, Finland
| | - Taru Varila
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20500 Turku, Finland
| | - Garry L Corthals
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20500 Turku, Finland
| | - Jüri Reimand
- Computational Biology Program, Ontario Institute for Cancer Research, Toronto, Ontario M5G 0A3, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Ontario M5G 1L7, Canada
| | - Krister Wennerberg
- Institute for Molecular Medicine Finland FIMM, University of Helsinki, Tukholmankatu 8, Helsinki, Finland
| | - Tero Aittokallio
- Institute for Molecular Medicine Finland FIMM, University of Helsinki, Tukholmankatu 8, Helsinki, Finland; Department of Mathematics and Statistics, University of Turku, 20500 Turku, Finland
| | - Jukka Westermarck
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20500 Turku, Finland; Institute of Biomedicine, University of Turku, 20500 Turku, Finland.
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47
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The Role of MYC and PP2A in the Initiation and Progression of Myeloid Leukemias. Cells 2020; 9:cells9030544. [PMID: 32110991 PMCID: PMC7140463 DOI: 10.3390/cells9030544] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/23/2020] [Accepted: 02/24/2020] [Indexed: 12/18/2022] Open
Abstract
The MYC transcription factor is one of the best characterized PP2A substrates. Deregulation of the MYC oncogene, along with inactivation of PP2A, are two frequent events in cancer. Both proteins are essential regulators of cell proliferation, apoptosis, and differentiation, and they, directly and indirectly, regulate each other’s activity. Studies in cancer suggest that targeting the MYC/PP2A network is an achievable strategy for the clinic. Here, we focus on and discuss the role of MYC and PP2A in myeloid leukemias.
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48
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Schmitz ML, Higgins JMG, Seibert M. Priming chromatin for segregation: functional roles of mitotic histone modifications. Cell Cycle 2020; 19:625-641. [PMID: 31992120 DOI: 10.1080/15384101.2020.1719585] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Posttranslational modifications (PTMs) of histone proteins are important for various cellular processes including regulation of gene expression and chromatin structure, DNA damage response and chromosome segregation. Here we comprehensively review mitotic histone PTMs, in particular phosphorylations, and discuss their interplay and functions in the control of dynamic protein-protein interactions as well as their contribution to centromere and chromosome structure and function during cell division. Histone phosphorylations can create binding sites for mitotic regulators such as the chromosomal passenger complex, which is required for correction of erroneous spindle attachments and chromosome bi-orientation. Other histone PTMs can alter the structural properties of nucleosomes and the accessibility of chromatin. Epigenetic marks such as lysine methylations are maintained during mitosis and may also be important for mitotic transcription as well as bookmarking of transcriptional states to ensure the transmission of gene expression programs through cell division. Additionally, histone phosphorylation can dissociate readers of methylated histones without losing epigenetic information. Through all of these processes, mitotic histone PTMs play a functional role in priming the chromatin for faithful chromosome segregation and preventing genetic instability, one of the characteristic hallmarks of cancer cells.
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Affiliation(s)
- M Lienhard Schmitz
- Institute of Biochemistry, Medical Faculty, Member of the German Center for Lung Research, Justus-Liebig-University, Giessen, Germany
| | - Jonathan M G Higgins
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Markus Seibert
- Institute of Biochemistry, Medical Faculty, Member of the German Center for Lung Research, Justus-Liebig-University, Giessen, Germany
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3' UTRs Regulate Protein Functions by Providing a Nurturing Niche during Protein Synthesis. COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY 2020; 84:95-104. [PMID: 31900325 DOI: 10.1101/sqb.2019.84.039206] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Messenger RNAs (mRNAs) are the templates for protein synthesis as the coding region is translated into the amino acid sequence. mRNAs also contain 3' untranslated regions (3' UTRs) that harbor additional elements for the regulation of protein function. If the amino acid sequence of a protein is necessary and sufficient for its function, we call it 3' UTR-independent. In contrast, functions that are accomplished by protein complexes whose formation requires the presence of a specific 3' UTR are 3' UTR-dependent protein functions. We showed that 3' UTRs can regulate protein activity without affecting protein abundance, and alternative 3' UTRs can diversify protein functions. We currently think that the regulation of protein function by 3' UTRs is facilitated by the local environment at the site of protein synthesis, which we call the nurturing niche for nascent proteins. This niche is composed of the mRNA and the bound proteins that consist of RNA-binding proteins and recruited proteins. It enables the formation of specific protein complexes, as was shown for TIS granules, a recently discovered cytoplasmic membraneless organelle. This finding suggests that changing the niche for nascent proteins will alter protein activity and function, implying that cytoplasmic membraneless organelles can regulate protein function in a manner that is independent of protein abundance.
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50
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Lynch KL, Gooding LR, Garnett-Benson C, Ornelles DA, Avgousti DC. Epigenetics and the dynamics of chromatin during adenovirus infections. FEBS Lett 2019; 593:3551-3570. [PMID: 31769503 DOI: 10.1002/1873-3468.13697] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 11/20/2019] [Accepted: 11/23/2019] [Indexed: 12/26/2022]
Abstract
The DNA genome of eukaryotic cells is compacted by histone proteins within the nucleus to form chromatin. Nuclear-replicating viruses such as adenovirus have evolved mechanisms of chromatin manipulation to promote infection and subvert host defenses. Epigenetic factors may also regulate persistent adenovirus infection and reactivation in lymphoid tissues. In this review, we discuss the viral proteins E1A and protein VII that interact with and alter host chromatin, as well as E4orf3, which separates host chromatin from sites of viral replication. We also highlight recent advances in chromatin technologies that offer new insights into virus-directed chromatin manipulation. Beyond the role of chromatin in the viral replication cycle, we discuss the nature of persistent viral genomes in lymphoid tissue and cell lines, and the potential contribution of epigenetic signals in maintaining adenovirus in a quiescent state. By understanding the mechanisms through which adenovirus manipulates host chromatin, we will understand new aspects of this ubiquitous virus and shed light on previously unknown aspects of chromatin biology.
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Affiliation(s)
- Kelsey L Lynch
- Human Biology Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Linda R Gooding
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA, USA
| | | | - David A Ornelles
- Department of Microbiology and Immunology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Daphne C Avgousti
- Human Biology Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
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