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Yu LR, Han XZ, Tang YZ, Liu D, Luo XQ, Qiu XW, Feng J, Yuan WX, Ding JY. Activation of the MEK/ERK Pathway Mediates the Inhibitory Effects of Silvestrol on Nasopharyngeal Carcinoma Cells via RAP1A, HK2, and GADD45A. FRONT BIOSCI-LANDMRK 2024; 29:160. [PMID: 38682208 DOI: 10.31083/j.fbl2904160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/26/2024] [Accepted: 03/18/2024] [Indexed: 05/01/2024]
Abstract
BACKGROUND Nasopharyngeal carcinoma (NPC) is a malignant tumor associated with Epstein-Barr virus (EBV) infection. Chemoradiotherapy is the mainstream treatment for locally advanced NPC, and chemotherapeutic drugs are an indispensable part of NPC treatment. However, the toxic side-effects of chemotherapy drugs limit their therapeutic value, and new chemotherapy drugs are urgently needed for NPC. Silvestrol, an emerging natural plant anticancer molecule, has shown promising antitumor activity in breast cancer, melanoma, liver cancer, and other tumor types by promoting apoptosis in cancer cells to a greater extent than in normal cells. However, the effects of silvestrol on NPC and its possible molecular mechanisms have yet to be fully explored. METHODS Cell counting kit-8 (CCK-8), cell scratch, flow cytometry, 5-ethynyl-2'-deoxyuridine (EdU), and Western blot (WB) assays were used to evaluate the effects of silvestrol on the cell viability, cell cycle, apoptosis, and migration of NPC cells. RNA sequencing (RNA-Seq) was used to study the effect of extracellular signal-regulated kinase (ERK) inhibitors on the cell transcriptome, and immunohistochemistry (IHC) to assess protein expression levels in patient specimens. RESULTS Silvestrol inhibited cell migration and DNA replication of NPC cells, while promoting the expression of cleaved caspase-3, apoptosis, and cell cycle arrest. Furthermore, silvestrol altered the level of ERK phosphorylation. The ERK-targeted inhibitor LY3214996 attenuated silvestrol-mediated inhibition of NPC cell proliferation but not migration. Analysis of RNA-Seq data and WB were used to identify and validate the downstream regulatory targets of silvestrol. Expression of GADD45A, RAP1A, and hexokinase-II (HK2) proteins was inhibited by silvestrol and LY3214996. Finally, IHC revealed that GADD45A, RAP1A, and HK2 protein expression was more abundant in cancer tissues than in non-tumor tissues. CONCLUSIONS Silvestrol inhibits the proliferation of NPC cells by targeting ERK phosphorylation. However, the inhibition of NPC cell migration by silvestrol was independent of the Raf-MEK-ERK pathway. RAP1A, HK2, and GADD45A may be potential targets for the action of silvestrol.
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Affiliation(s)
- Lu-Rong Yu
- College of Traditional Chinese Medicine, Chongqing Medical University, 401331 Chongqing, China
| | - Xian-Zhong Han
- Department of Pharmacy, Chongqing General Hospital, Chongqing University, 400014 Chongqing, China
| | - Ying-Zi Tang
- Department of Pathology, Chongqing General Hospital, Chongqing University, 400014 Chongqing, China
| | - Dan Liu
- Department of Pharmacy, Chongqing General Hospital, Chongqing University, 400014 Chongqing, China
| | - Xian-Qin Luo
- College of Traditional Chinese Medicine, Chongqing Medical University, 401331 Chongqing, China
| | - Xue-Wen Qiu
- Department of Pharmacy, Chongqing General Hospital, Chongqing University, 400014 Chongqing, China
| | - Jie Feng
- Department of Pharmacy, Chongqing General Hospital, Chongqing University, 400014 Chongqing, China
| | - Wen-Xiao Yuan
- Department of Pharmacy, Chongqing General Hospital, Chongqing University, 400014 Chongqing, China
| | - Jia-Yu Ding
- Department of Pharmacy, Chongqing General Hospital, Chongqing University, 400014 Chongqing, China
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Wu Y, Zhu X, Jiang W, Li J, Li H, Zhang K, Yang Y, Qu S, Guan X, Bai Y, Guo H, Dai L. LMNA-related muscular dystrophy involving myoblast proliferation and apoptosis through the FOXO1/ GADD45A pathway. Biochim Biophys Acta Mol Basis Dis 2024; 1870:166943. [PMID: 37951507 DOI: 10.1016/j.bbadis.2023.166943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/07/2023] [Accepted: 10/30/2023] [Indexed: 11/14/2023]
Abstract
LMNA-related muscular dystrophy is a major disease phenotype causing mortality and morbidity in laminopathies, but its pathogenesis is still unclear. To explore the molecular pathogenesis, a knock-in mouse harbouring the Lmna-W520R mutation was modelled. Morphological and motor functional analyses showed that homozygous mutant mice revealed severe muscular atrophy, profound motor dysfunction, and shortened lifespan, while heterozygotes showed a variant arrangement of muscle bundles and mildly reduced motor capacity. Mechanistically, the FOXO1/GADD45A pathway involving muscle atrophy processes was found to be altered in vitro and in vivo assays. The expression levels of FOXO1 and its downstream regulatory molecule GADD45A significantly increased in atrophic muscle tissue. The elevated expression of FOXO1 was associated with decreased H3K27me3 in its gene promotor region. Overexpression of GADD45A induced apoptosis and cell cycle arrest of myoblasts in vitro, and it could be partially restored by the FOXO1 inhibitor AS1842856, which also slowed the muscle atrophy process with improved motor function and prolonged survival time of homozygous mutant mice in vivo. Notably, the inhibitor also partly rescued the apoptosis and cell cycle arrest of hiPSC-derived myoblasts harbouring the LMNA-W520R mutation. Together, these data suggest that the activation of the FOXO1/GADD45A pathway contributes to the pathogenesis of LMNA-related muscle atrophy, and it might serve as a potential therapeutic target for laminopathies.
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Affiliation(s)
- Yue Wu
- Department of Medical Genetics, College of Basic Medical Science, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Xintong Zhu
- Department of Medical Genetics, College of Basic Medical Science, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Wen Jiang
- Department of Medical Genetics, College of Basic Medical Science, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Jia Li
- Department of Medical Genetics, College of Basic Medical Science, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Hongyan Li
- Department of Medical Genetics, College of Basic Medical Science, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Kun Zhang
- Department of Pathogenic Biology, College of Basic Medical Science, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Yixuan Yang
- Department of Medical Genetics, College of Basic Medical Science, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Song Qu
- Department of Medical Genetics, College of Basic Medical Science, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Xingying Guan
- Department of Medical Genetics, College of Basic Medical Science, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Yun Bai
- Department of Medical Genetics, College of Basic Medical Science, Army Medical University (Third Military Medical University), Chongqing 400038, China
| | - Hong Guo
- Department of Medical Genetics, College of Basic Medical Science, Army Medical University (Third Military Medical University), Chongqing 400038, China.
| | - Limeng Dai
- Department of Medical Genetics, College of Basic Medical Science, Army Medical University (Third Military Medical University), Chongqing 400038, China; Department of Gynecology and Obstetrics, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing 400038, China.
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Palomer X, Salvador JM, Griñán-Ferré C, Barroso E, Pallàs M, Vázquez-Carrera M. GADD45A: With or without you. Med Res Rev 2024. [PMID: 38264852 DOI: 10.1002/med.22015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/11/2023] [Accepted: 01/09/2024] [Indexed: 01/25/2024]
Abstract
The growth arrest and DNA damage inducible (GADD)45 family includes three small and ubiquitously distributed proteins (GADD45A, GADD45B, and GADD45G) that regulate numerous cellular processes associated with stress signaling and injury response. Here, we provide a comprehensive review of the current literature investigating GADD45A, the first discovered member of the family. We first depict how its levels are regulated by a myriad of genotoxic and non-genotoxic stressors, and through the combined action of intricate transcriptional, posttranscriptional, and even, posttranslational mechanisms. GADD45A is a recognized tumor suppressor and, for this reason, we next summarize its role in cancer, as well as the different mechanisms by which it regulates cell cycle, DNA repair, and apoptosis. Beyond these most well-known actions, GADD45A may also influence catabolic and anabolic pathways in the liver, adipose tissue and skeletal muscle, among others. Not surprisingly, GADD45A may trigger AMP-activated protein kinase activity, a master regulator of metabolism, and is known to act as a transcriptional coregulator of numerous nuclear receptors. GADD45A has also been reported to display a cytoprotective role by regulating inflammation, fibrosis and oxidative stress in several organs and tissues, and is regarded an important contributor for the development of heart failure. Overall data point to that GADD45A may play an important role in metabolic, neurodegenerative and cardiovascular diseases, and also autoimmune-related disorders. Thus, the potential mechanisms by which dysregulation of GADD45A activity may contribute to the progression of these diseases are also reviewed below.
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Affiliation(s)
- Xavier Palomer
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
- Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, Barcelona, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Diseases (CIBERDEM)-Instituto de Salud Carlos III, Madrid, Spain
- Pediatric Research Institute-Hospital Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain
| | - Jesús M Salvador
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, Madrid, Spain
| | - Christian Griñán-Ferré
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
- Institut de Neurociències, Universitat de Barcelona (NeuroUB), Barcelona, Spain
- Spanish Biomedical Research Center in Neurodegenerative Diseases (CIBERNED)-Instituto de Salud Carlos III, Madrid, Spain
| | - Emma Barroso
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
- Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, Barcelona, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Diseases (CIBERDEM)-Instituto de Salud Carlos III, Madrid, Spain
- Pediatric Research Institute-Hospital Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain
| | - Mercè Pallàs
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
- Institut de Neurociències, Universitat de Barcelona (NeuroUB), Barcelona, Spain
- Spanish Biomedical Research Center in Neurodegenerative Diseases (CIBERNED)-Instituto de Salud Carlos III, Madrid, Spain
| | - Manuel Vázquez-Carrera
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
- Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, Barcelona, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Diseases (CIBERDEM)-Instituto de Salud Carlos III, Madrid, Spain
- Pediatric Research Institute-Hospital Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain
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Wang S, Xie Z, Jun T, Ma X, Zhang M, Rao F, Xu H, Lu J, Ding X, Li Z. Identification of potential crucial genes and therapeutic targets for epilepsy. Eur J Med Res 2024; 29:43. [PMID: 38212777 PMCID: PMC10782668 DOI: 10.1186/s40001-024-01643-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 01/04/2024] [Indexed: 01/13/2024] Open
Abstract
BACKGROUND Epilepsy, a central neurological disorder, has a complex genetic architecture. There is some evidence suggesting that genetic factors play a role in both the occurrence of epilepsy and its treatment. However, the genetic determinants of epilepsy are largely unknown. This study aimed to identify potential therapeutic targets for epilepsy. METHODS Differentially expressed genes (DEGs) were extracted from the expression profiles of GSE44031 and GSE1834. Gene co-expression analysis was used to confirm the regulatory relationship between newly discovered epilepsy candidate genes and known epilepsy genes. Expression quantitative trait loci analysis was conducted to determine if epilepsy risk single-nucleotide polymorphisms regulate DEGs' expression in human brain tissue. Finally, protein-protein interaction analysis and drug-gene interaction analysis were performed to assess the role of DEGs in epilepsy treatment. RESULTS The study found that the protein tyrosine phosphatase receptor-type O gene (PTPRO) and the growth arrest and DNA damage inducible alpha gene (GADD45A) were significantly upregulated in epileptic rats compared to controls in both datasets. Gene co-expression analysis revealed that PTPRO was co-expressed with RBP4, NDN, PAK3, FOXG1, IDS, and IDS, and GADD45A was co-expressed with LRRK2 in human brain tissue. Expression quantitative trait loci analysis suggested that epilepsy risk single-nucleotide polymorphisms could be responsible for the altered PTPRO and GADD45A expression in human brain tissue. Moreover, the protein encoded by GADD45A had a direct interaction with approved antiepileptic drug targets, and GADD45A interacts with genistein and cisplatin. CONCLUSIONS The results of this study highlight PTPRO and GADD45A as potential genes for the diagnosis and treatment of epilepsy.
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Affiliation(s)
- Shitao Wang
- Department of Neurology, Affiliated Fuyang People's Hospital of Anhui Medical University, Fuyang, 236000, Anhui, China.
| | - Zhenrong Xie
- The Medical Biobank, First Affiliated Hospital of Kunming Medical University, Kunming, 650032, Yunnan, China
| | - Tian Jun
- Department of Neurology, Affiliated Fuyang People's Hospital of Anhui Medical University, Fuyang, 236000, Anhui, China
| | - Xuelu Ma
- Department of Neurology, Affiliated Fuyang People's Hospital of Anhui Medical University, Fuyang, 236000, Anhui, China
| | - Mengen Zhang
- Department of Neurology, Affiliated Fuyang People's Hospital of Anhui Medical University, Fuyang, 236000, Anhui, China
| | - Feng Rao
- Department of Neurology, Affiliated Fuyang People's Hospital of Anhui Medical University, Fuyang, 236000, Anhui, China
| | - Hui Xu
- Department of Neurology, Affiliated Fuyang People's Hospital of Anhui Medical University, Fuyang, 236000, Anhui, China
| | - Jinghong Lu
- Department of Neurology, Affiliated Fuyang People's Hospital of Anhui Medical University, Fuyang, 236000, Anhui, China
| | - Xiangqian Ding
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Zongyou Li
- Department of Neurology, Affiliated Fuyang People's Hospital of Anhui Medical University, Fuyang, 236000, Anhui, China
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Cai J, Ma W, Wang X, Chang H, Wei Z, Li J, Zeng M. The spike protein of SARS-CoV-2 induces inflammation and EMT of lung epithelial cells and fibroblasts through the upregulation of GADD45A. Open Med (Wars) 2023; 18:20230779. [PMID: 38025528 PMCID: PMC10656760 DOI: 10.1515/med-2023-0779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 06/27/2023] [Accepted: 07/31/2023] [Indexed: 12/01/2023] Open
Abstract
Lung epithelial cells and fibroblasts poorly express angiotensin-converting enzyme 2, and the study aimed to investigate the role of the spike protein of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on inflammation and epithelial-mesenchymal transition (EMT) in two lung cell lines and to understand the potential mechanism. Lung epithelial cells (BEAS-2B) and fibroblasts (MRC-5) were treated with the spike protein, then inflammatory and EMT phenotypes were detected by enzyme-linked immunosorbent assay, Transwell, and western blot assays. RNA-sequence and bioinformatic analyses were performed to identify dysregulated genes. The roles of the candidate genes were further investigated. The results showed that treatment with 1,000 ng/mL of spike protein in two lung cell lines caused increased levels of IL-6, TNF-α, CXCL1, and CXCL3, and the occurrence of EMT. RNA-sequence identified 4,238 dysregulated genes in the spike group, and 18 candidate genes were involved in both inflammation- and EMT-related processes. GADD45A had the highest verified fold change (abs), and overexpression of GADD45A promoted the secretion of cytokines and EMT in the two lung cell lines. In conclusion, the spike protein induces inflammation and EMT in lung epithelial cells and fibroblasts by upregulating GADD45A, providing a new target to inhibit inflammation and EMT.
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Affiliation(s)
- Jiehao Cai
- Department of Infectious Diseases, Children’s Hospital of Fudan University, Shanghai201102, China
| | - Wenjie Ma
- Department of Infectious Diseases, Children’s Hospital of Fudan University, Shanghai201102, China
| | - Xiangshi Wang
- Department of Infectious Diseases, Children’s Hospital of Fudan University, Shanghai201102, China
| | - Hailing Chang
- Department of Infectious Diseases, Children’s Hospital of Fudan University, Shanghai201102, China
| | - Zhongqiu Wei
- Department of Infectious Diseases, Children’s Hospital of Fudan University, Shanghai201102, China
| | - Jingjing Li
- Department of Infectious Diseases, Children’s Hospital of Fudan University, Shanghai201102, China
| | - Mei Zeng
- Department of Infectious Diseases, Children’s Hospital of Fudan University, Shanghai201102, China
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You W, Liu S, Li J, Tu Y, Shan T. GADD45A regulates subcutaneous fat deposition and lipid metabolism by interacting with Stat1. BMC Biol 2023; 21:212. [PMID: 37807064 PMCID: PMC10561432 DOI: 10.1186/s12915-023-01713-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 09/26/2023] [Indexed: 10/10/2023] Open
Abstract
BACKGROUND Obesity, characterized by excessive white adipose tissue expansion, is associated with several metabolic complications. Identifying new adipogenesis regulators may lead to effective therapies for obesity-induced metabolic disorders. RESULTS Here, we identified the growth arrest and DNA damage-inducible A (GADD45A), a stress-inducible histone-folding protein, as a novel regulator of subcutaneous adipose metabolism. We found that GADD45A expression was positively correlated with subcutaneous fat deposition and obesity in humans and fatty animals. In vitro, the gain or loss function of GADD45A promoted or inhibited subcutaneous adipogenic differentiation and lipid accumulation, respectively. Using a Gadd45a-/- mouse model, we showed that compared to wild-type (WT) mice, knockout (KO) mice exhibited subcutaneous fat browning and resistance to high-fat diet (HFD)-induced obesity. GADD45A deletion also upregulated the expression of mitochondria-related genes. Importantly, we further revealed that the interaction of GADD45A with Stat1 prevented phosphorylation of Stat1, resulting in the impaired expression of Lkb1, thereby regulating subcutaneous adipogenesis and lipid metabolism. CONCLUSIONS Overall, our results reveal the critical regulatory roles of GADD45A in subcutaneous fat deposition and lipid metabolism. We demonstrate that GADD45A deficiency induces the inguinal white adipose tissue (iWAT) browning and protects mice against HFD-induced obesity. Our findings provide new potential targets for combating obesity-related metabolic diseases and improving human health.
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Affiliation(s)
- Wenjing You
- College of Animal Sciences, Zhejiang University, Hangzhou, China
- The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China
- Zhejiang Provincial Laboratory of Feed and Animal Nutrition, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang, China
| | - Shiqi Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, China
- The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China
- Zhejiang Provincial Laboratory of Feed and Animal Nutrition, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang, China
| | - Jie Li
- College of Animal Sciences, Zhejiang University, Hangzhou, China
- The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China
- Zhejiang Provincial Laboratory of Feed and Animal Nutrition, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang, China
| | - Yuang Tu
- College of Animal Sciences, Zhejiang University, Hangzhou, China
- The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China
- Zhejiang Provincial Laboratory of Feed and Animal Nutrition, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang, China
| | - Tizhong Shan
- College of Animal Sciences, Zhejiang University, Hangzhou, China.
- The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China.
- Zhejiang Provincial Laboratory of Feed and Animal Nutrition, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang, China.
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Xie M, Xie R, Huang P, Yap DYH, Wu P. GADD45A and GADD45B as Novel Biomarkers Associated with Chromatin Regulators in Renal Ischemia-Reperfusion Injury. Int J Mol Sci 2023; 24:11304. [PMID: 37511062 PMCID: PMC10379085 DOI: 10.3390/ijms241411304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/21/2023] [Accepted: 07/03/2023] [Indexed: 07/30/2023] Open
Abstract
Chromatin regulators (CRs) are essential upstream regulatory factors of epigenetic modification. The role of CRs in the pathogenesis of renal ischemia-reperfusion injury (IRI) remains unclear. We analyzed a bioinformatic analysis on the differentially expressed chromatin regulator genes in renal IRI patients using data from public domains. The hub CRs identified were used to develop a risk prediction model for renal IRI, and their expressions were also validated using Western blot, qRT-PCR, and immunohistochemistry in a murine renal IRI model. We also examined the relationships between hub CRs and infiltrating immune cells in renal IRI and used network analysis to explore drugs that target hub CRs and their relevant downstream microRNAs. The results of machine learning methods showed that five genes (DUSP1, GADD45A, GADD45B, GADD45G, HSPA1A) were upregulated in renal IRI, with key roles in the cell cycle, p38 MAPK signaling pathway, p53 signaling pathway, FoxO signaling pathway, and NF-κB signaling pathway. Two genes from the network, GADD45A and GADD45B (growth arrest and DNA damage-inducible protein 45 alpha and beta), were chosen for the renal IRI risk prediction model. They all showed good performance in the testing and validation cohorts. Mice with renal IRI showed significantly upregulated GADD45A and GADD45B expression within kidneys compared to sham-operated mice. GADD45A and GADD45B showed correlations with plasmacytoid dendritic cells (pDCs) in infiltrating immune cell analysis and enrichment in the MAPK pathway based on the weighted gene co-expression network analysis (WGCNA) method. Candidate drugs that target GADD45A and GADD45B include beta-escin, sertraline, primaquine, pimozide, and azacyclonol. The dysregulation of GADD45A and GADD45B is related to renal IRI and the infiltration of pDCs, and drugs that target GADD45A and GADD45B may have therapeutic potential for renal IRI.
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Affiliation(s)
- Ming Xie
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Ruiyan Xie
- Division of Nephrology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong 999077, China
| | - Pengcheng Huang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Desmond Y H Yap
- Division of Nephrology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong 999077, China
| | - Peng Wu
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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Li Y, Zhao H, Li N, Yuan C, Dong N, Wen J, Li Z, Wang Q, Wang L, Mao H. BBOX1-AS1 mediates trophoblast cells dysfunction via regulating hnRNPK/ GADD45A axis†. Biol Reprod 2023; 108:408-422. [PMID: 36617174 DOI: 10.1093/biolre/ioad002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/20/2022] [Accepted: 01/01/2023] [Indexed: 01/09/2023] Open
Abstract
Recurrent pregnancy loss (RPL) is a common pathological problem during pregnancy, and its clinical etiology is complex and unclear. Dysfunction of trophoblasts may cause a series of pregnancy complications, including preeclampsia, fetal growth restriction, and RPL. Recently, lncRNAs have been found to be closely related to the occurrence and regulation of pregnancy-related diseases, but few studies have focused on their role in RPL. In this study, we identified a novel lncRNA BBOX1-AS1 that was significantly upregulated in villous tissues and serum of RPL patients. Functionally, BBOX1-AS1 inhibited proliferation, migration, invasion, tube formation and promoted apoptosis of trophoblast cells. Mechanistically, overexpression of BBOX1-AS1 activated the p38 and JNK MAPK signaling pathways by upregulating GADD45A expression. Further studies indicated that BBOX1-AS1 could increase the stability of GADD45A mRNA by binding hnRNPK and ultimately cause abnormal trophoblast function. Collectively, our study highlights that the BBOX1-AS1/hnRNPK/GADD45A axis plays an important role in trophoblast-induced RPL and that BBOX1-AS1 may serve as a potential target for the diagnosis of RPL.
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Affiliation(s)
- Yali Li
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Hui Zhao
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Ning Li
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Chao Yuan
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Nana Dong
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Jin Wen
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Zihui Li
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Qun Wang
- Key Laboratory of Infection and Immunity of Shandong Province, Department of Immunology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Lina Wang
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Haiting Mao
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, China
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Chu Z, Wang Y, Zhang S, Cao P. Circ_0004904 suppresses trophoblast cell proliferation, invasion and migration in preeclampsia via upregulating the expression of DNA damage inducible alpha by interacting with miR-19a-3p. Cell Cycle 2023; 22:464-475. [PMID: 36533778 PMCID: PMC9879172 DOI: 10.1080/15384101.2022.2124616] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 08/29/2022] [Accepted: 09/11/2022] [Indexed: 12/23/2022] Open
Abstract
Preeclampsia (PE) is the most common complication in the pregnancy of women. PE progression was found to be associated with dysregulated circular RNAs (circRNAs), and we aimed to explore the pathological mechanism with circ_0004904 in PE. The circ_0004904, microRNA-19a-3p (miR-19a-3p) and DNA damage inducible alpha (GADD45A) were quantified via reverse transcription-quantitative polymerase chain reaction assay. Trophoblast cell behaviors were examined by cell viability using Cell Counting Kit-8 assay, cell proliferation using EdU assay, cell apoptosis using flow cytometry, cell invasion using transwell assay and migration using wound healing assay. Western blot was used for protein analysis of epithelial mesenchymal transition (EMT) and GADD45A. Dual-luciferase reporter assay and RNA immunoprecipitation assay were used for target interaction analysis. The circ_0004904 upregulation was detected in placenta tissues from PE patients. Trophoblast cell proliferation, invasion, migration and EMT were repressed but cell apoptosis was promoted after overexpression of circ_0004904. Circ_0004904 acted as a miR-19a-3p sponge in trophoblast cells, and all regulatory effects of circ_0004904 on trophoblast cell behaviors were reversed by miR-19a-3p upregulation. The miR-19a-3p directly targeted GADD45A and miR-19a-3p downregulation inhibited trophoblast cell development through elevating the GADD45A level. Moreover, circ_0004904 enhanced the expression of GADD45A via sponging miR-19a-3p. Our results elucidated that circ_0004904 reduced proliferation and cell motility of trophoblast cells via the miR-19a-3p-mediated GADD45A level elevation, indicating the involvement of circ_0004904/miR-19a-3p/GADD45A in PE progression.
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Affiliation(s)
- Zhenhao Chu
- Department of Gynaecology and Obstetrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yang Wang
- Department of Gynaecology and Obstetrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Shuo Zhang
- Department of Gynaecology and Obstetrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Pin Cao
- Department of Gynaecology and Obstetrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
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10
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You W, Liu S, Ji J, Ling D, Tu Y, Zhou Y, Chen W, Valencak TG, Wang Y, Shan T. Growth arrest and DNA damage-inducible alpha regulates muscle repair and fat infiltration through ATP synthase F1 subunit alpha. J Cachexia Sarcopenia Muscle 2023; 14:326-341. [PMID: 36511343 PMCID: PMC9891974 DOI: 10.1002/jcsm.13134] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 10/06/2022] [Accepted: 11/10/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Skeletal muscle fat infiltration is a common feature during ageing, obesity and several myopathies associated with muscular dysfunction and sarcopenia. However, the regulatory mechanisms of intramuscular adipogenesis and strategies to reduce fat infiltration in muscle remain unclear. Here, we identified the growth arrest and DNA damage-inducible alpha (GADD45A), a stress-inducible histone folding protein, as a critical regulator of intramuscular fat (IMAT) infiltration. METHODS To explore the role of GADD45A on IMAT infiltration and muscle regeneration, the gain or loss function of GADD45A in intramuscular preadipocytes was performed. The adipocyte-specific GADD45A knock-in (KI) mice and high IMAT-infiltrated muscle model by glycerol injection (50 μL of 50% v/v GLY) were generated. RNA-sequencing, histological changes, gene expression, lipid metabolism, mitochondrial function and the effect of dietary factor epigallocatechin-3-gallate (EGCG) treatment (100 mg/kg) on IMAT infiltration were studied. RESULTS The unbiased transcriptomics data analysis indicated that GADD45A expression positively correlates with IMAT infiltration and muscle metabolic disorders in humans (correlation: young vs. aged people, Gadd45a and Cebpa, r2 = 0.20, P < 0.05) and animals (correlation: wild-type [WT] vs. mdx mice, Gadd45a and Cebpa, r2 = 0.38, P < 0.05; NaCl vs. GLY mice, Gadd45a and Adipoq/Fabp4, r2 = 0.80/0.71, both P < 0.0001). In vitro, GADD45A overexpression promotes intramuscular preadipocyte adipogenesis, upregulating the expression of adipogenic genes (Ppara: +47%, Adipoq: +28%, P < 0.001; Cebpa: +135%, Fabp4: +16%, P < 0.01; Pparg: +66%, Leptin: +77%, P < 0.05). GADD45A knockdown robustly decreased lipid accumulation (Pparg: -57%, Adipoq: -35%, P < 0.001; Fabp4: -37%, P < 0.01; Leptin: -28%, P < 0.05). GADD45A KI mice exhibit inhibited skeletal muscle regeneration (myofibres: -40%, P < 0.01) and enhanced IMAT infiltration (adipocytes: +20%, P < 0.05). These KI mice have impaired exercise endurance and mitochondrial function. Mechanistically, GADD45A affects ATP synthase F1 subunit alpha (ATP5A1) ubiquitination degradation (ubiquitinated ATP5A1, P < 0.001) by recruiting the E3 ubiquitin ligase TRIM25, which decreases ATP synthesis (ATP production: -23%, P < 0.01) and inactivates the cAMP/PKA/LKB1 signalling pathway (cAMP: -36%, P < 0.01; decreased phospho-PKA and phospho-LKB1 protein content, P < 0.01). The dietary factor EGCG can protect against muscle fat infiltration (triglyceride: -64%, P < 0.05) via downregulating GADD45A (decreased GADD45A protein content, P < 0.001). CONCLUSIONS Our findings reveal a crucial role of GADD45A in regulating muscle repair and fat infiltration and suggest that inhibition of GADD45A by EGCG might be a potential strategy to combat fat infiltration and its associated muscle dysfunction.
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Affiliation(s)
- Wenjing You
- College of Animal SciencesZhejiang UniversityHangzhouZhejiangChina
- The Key Laboratory of Molecular Animal NutritionMinistry of EducationHangzhouChina
- Zhejiang Provincial Laboratory of Feed and Animal NutritionHangzhouChina
| | - Shiqi Liu
- College of Animal SciencesZhejiang UniversityHangzhouZhejiangChina
- The Key Laboratory of Molecular Animal NutritionMinistry of EducationHangzhouChina
- Zhejiang Provincial Laboratory of Feed and Animal NutritionHangzhouChina
| | - Jianfei Ji
- Key Laboratory for Cell and Gene Engineering of Zhejiang Province, College of Life SciencesZhejiang UniversityHangzhouChina
| | - Defeng Ling
- College of Animal SciencesZhejiang UniversityHangzhouZhejiangChina
- The Key Laboratory of Molecular Animal NutritionMinistry of EducationHangzhouChina
- Zhejiang Provincial Laboratory of Feed and Animal NutritionHangzhouChina
| | - Yuang Tu
- College of Animal SciencesZhejiang UniversityHangzhouZhejiangChina
- The Key Laboratory of Molecular Animal NutritionMinistry of EducationHangzhouChina
- Zhejiang Provincial Laboratory of Feed and Animal NutritionHangzhouChina
| | - Yanbing Zhou
- College of Animal SciencesZhejiang UniversityHangzhouZhejiangChina
- The Key Laboratory of Molecular Animal NutritionMinistry of EducationHangzhouChina
- Zhejiang Provincial Laboratory of Feed and Animal NutritionHangzhouChina
| | - Wentao Chen
- College of Animal SciencesZhejiang UniversityHangzhouZhejiangChina
- The Key Laboratory of Molecular Animal NutritionMinistry of EducationHangzhouChina
- Zhejiang Provincial Laboratory of Feed and Animal NutritionHangzhouChina
| | | | - Yizhen Wang
- College of Animal SciencesZhejiang UniversityHangzhouZhejiangChina
- The Key Laboratory of Molecular Animal NutritionMinistry of EducationHangzhouChina
- Zhejiang Provincial Laboratory of Feed and Animal NutritionHangzhouChina
| | - Tizhong Shan
- College of Animal SciencesZhejiang UniversityHangzhouZhejiangChina
- The Key Laboratory of Molecular Animal NutritionMinistry of EducationHangzhouChina
- Zhejiang Provincial Laboratory of Feed and Animal NutritionHangzhouChina
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11
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Soederberg A, Meißgeier T, Bosserhoff AK, Linck-Paulus L. MAGOH and MAGOHB Knockdown in Melanoma Cells Decreases Nonsense-Mediated Decay Activity and Promotes Apoptosis via Upregulation of GADD45A. Cells 2022; 11:cells11233859. [PMID: 36497117 PMCID: PMC9738831 DOI: 10.3390/cells11233859] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/22/2022] [Accepted: 11/29/2022] [Indexed: 12/05/2022] Open
Abstract
Cutaneous malignant melanoma is a highly proliferative and aggressive skin cancer with a steadily increasing incidence and a low long-term survival rate after metastatic progression. The protein MAGOH and its highly identical homologue MAGOHB are core components of the exon junction complex (EJC), which regulates splicing, stability and translation of mRNAs. The EJC, and especially MAGOH, has been shown to be involved in the development and progression of several cancers. In melanoma, the expression and function of both homologues remain essentially unexplored. This study identifies high MAGOH and MAGOHB protein expression in cutaneous melanoma cell lines and patient derived tissue samples. An siRNA-mediated knockdown of MAGOH significantly inhibits melanoma cell proliferation. The loss of MAGOH does not affect cell cycle progression, but induces apoptosis, an effect that is enhanced by a simultaneous knockdown of MAGOH and MAGOHB. MAGOH and MAGOHB do not influence the expression of the pro-apoptotic protein Bcl-XS or exon skipping. However, the knockdown of MAGOH and MAGOHB strongly decreases nonsense-mediated decay (NMD) activity, leading to an upregulation of the pro-apoptotic protein GADD45A. In conclusion, simultaneous inhibition of MAGOH and MAGOHB expression substantially affects cell survival, indicating both MAGOH homologues as promising new targets for the treatment of melanoma.
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Affiliation(s)
- Agnes Soederberg
- Institute of Biochemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Fahrstraße 17, 91054 Erlangen, Germany
| | - Tina Meißgeier
- Institute of Biochemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Fahrstraße 17, 91054 Erlangen, Germany
| | - Anja Katrin Bosserhoff
- Institute of Biochemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Fahrstraße 17, 91054 Erlangen, Germany
- Comprehensive Cancer Center (CCC) Erlangen-EMN, 91054 Erlangen, Germany
| | - Lisa Linck-Paulus
- Institute of Biochemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Fahrstraße 17, 91054 Erlangen, Germany
- Correspondence:
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12
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Qian X, Zhang Y. EZH2 enhances proliferation and migration of trophoblast cell lines by blocking GADD45A-mediated p38/MAPK signaling pathway. Bioengineered 2022; 13:12583-12597. [PMID: 35609316 PMCID: PMC9275956 DOI: 10.1080/21655979.2022.2074620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Impaired activity of the trophoblasts is a major contributor to the progression of pregnancy pathologies including preeclampsia (PE). This research probed the function of enhancer of zeste homolog 2 (EZH2) in activity of trophoblast cells and its correlation with growth arrest and DNA damage inducible alpha (GADD45A). EZH2 was predicted to be downregulated in placental tissues in PE according to a gene chip analysis, and reduced expression of EZH2 was detected in the placental tissues of patients with PE. Overexpression of EZH2 augmented proliferation and invasiveness of two trophoblast cell lines HTR-8/SVneo and JEG3 cells. EZH2 catalyzed trimethylation of lysine 27 on histone 3 (H3K27me3) in GADD45A promoter to suppress its transcription. GADD45A silencing increased the activity of the trophoblast cell lines and inactivated the p38/mitogen-activated protein kinase (MAPK) signaling pathway. Rescue experiments confirmed that either inhibition of GADD45A or p38 restored the proliferation, migration, and invasiveness of the trophoblast cell lines suppressed by EZH2 silencing. In conclusion, this work suggests that EZH2 enhances activity of trophoblast cell lines by suppressing GADD45A-mediated p38/MAPK signaling pathway.
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Affiliation(s)
- Xuefang Qian
- Department of Gynaecology and Obstetrics, Suzhou Hospital of Integrated Traditional Chinese and Western Medicine, Suzhou, P.R. China
| | - Yuying Zhang
- Department of Gynaecology and Obstetrics, Suzhou Hospital of Integrated Traditional Chinese and Western Medicine, Suzhou, P.R. China
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13
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Li J, Chen J. GADD45A induces neuropathic pain by activating P53 apoptosis pathway in mice. Genes Genomics 2022. [PMID: 35167054 DOI: 10.1007/s13258-022-01226-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 01/25/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND Neuropathic pain is a common condition with current heights of varying etiology. The therapeutic drugs are also poorly work and often limited by side effects such as dizziness. OBJECTIVE This study aimed to explore the function mechanism of GADD45A in neuropathic pain. METHODS The DEGs in neuropathic pain mouse model chip were screened by bioinformatics analysis. The expression of GADD45A in SNL model was determined by RT-qPCR and Immunofluorescence assay. The protein expression of p53-apoptosis pathway proteins was determined by western blotting. RESULTS Combination analysis of bioinformatics methods revealed that the expression of GADD45A was upregulated in SNL. The results of RT-qPCR assay and Immunofluorescence assay revealed that GADD45A was overexpressed in all of time points SNL model. Furthermore, knockdown of GADD45A in SNL remarkably antagonized the malignance phenotype compared with the Ad-GFP treated SNL. In addition, knockdown of GADD45A downregulated the expression of p53 and reduced the apoptosis of spinal cord nerve cells. CONCLUSIONS Our study suggests that GADD45A may be a biomarker in the neuropathic pain of mice.
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14
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Arab K, Niehrs C. In Vitro Binding of GADD45A to RNA:DNA Hybrids. Methods Mol Biol 2022; 2528:277-287. [PMID: 35704198 DOI: 10.1007/978-1-0716-2477-7_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
R-loops are three-stranded RNA:DNA hybrid structures that frequently form during transcription. While R-loop misregulation is associated with genome instability, cells also harness RNA-DNA hybrids in scheduled, "regulatory," R-loops to control gene expression. One regulatory role involves epigenetic gene regulation by the R-loop reader Growth Arrest and DNA Damage 45A (GADD45A). This small stress related protein promotes DNA demethylation by recruiting TET dioxygenase and Thymine DNA glycosylase to specific genomic loci. GADD45A requires adapters for its genomic localization. One such class of adapters are R-loops formed at certain CpG island promoters to which GADD45A binds directly, targets the demethylation machinery, and confers an open chromatin state. Here, we describe protocols for carrying out in vitro binding assays with GADD45A to RNA:DNA hybrids to biochemically study its direct binding to R-loops, specifically GADD45A pulldown and EMSA (electrophoretic mobility shift) assays.
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Affiliation(s)
- Khelifa Arab
- Institute of Molecular Biology (IMB), Mainz, Germany.
| | - Christof Niehrs
- Institute of Molecular Biology (IMB), Mainz, Germany.
- Division of Molecular Embryology, DKFZ-ZMBH Alliance, Heidelberg, Germany.
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15
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Niwa AM, Semprebon SC, D'Epiro GFR, Marques LA, Zanetti TA, Mantovani MS. Salinomycin induces cell cycle arrest and apoptosis and modulates hepatic cytochrome P450 mRNA expression in HepG2/C3a cells. Toxicol Mech Methods 2021; 32:341-351. [PMID: 34806536 DOI: 10.1080/15376516.2021.2008570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Salinomycin (SAL) is a monocarboxylic polyether ionophore antibiotic isolated from Streptomyces albus. It exhibits an effective antitumor potential against numerous human cancer cells. This study aimed to assess the antiproliferative effects of SAL in human hepatocellular carcinoma HepG2/C3a cell line. We investigated the effects of SAL on cell growth, DNA damage induction, cell cycle changes and apoptosis; and relative changes in expression of cell cycle-related, apoptosis-related, and CYP450 genes. SAL induced cell cycle arrest in the G2/M phase, upregulation of CDKN1A and GADD45A and downregulation of cyclin genes including CCNB1 and CCNA2. SAL effectively suppressed mRNA levels of CTNNB1 gene, an important oncogene that promotes tumorigenesis. The decrease of HepG2/C3A cells' survival can also be due to downregulation of antiapoptotic BCL-2 expression, thus promoting the induction of apoptosis by SAL. This study also demonstrated the ability of SAL in modulating hepatic cytochrome P450 (CYP) mRNA expression, such that SAL caused the upregulation of CYP1A members and CYP3A5; and downregulation of CYP3A4. Taken together, these data contribute to the understanding of the mechanism of action of SAL, highlighting that metabolizing enzymes modulated by SAL can interfere with chemotherapy treatment and it must be considered in associated treatments.
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Affiliation(s)
- Andressa Megumi Niwa
- Department of General Biology, Center of Biological Sciences, Londrina State University - UEL, Londrina, Brazil
| | - Simone Cristine Semprebon
- Department of General Biology, Center of Biological Sciences, Londrina State University - UEL, Londrina, Brazil
| | | | - Lilian Areal Marques
- Department of General Biology, Center of Biological Sciences, Londrina State University - UEL, Londrina, Brazil
| | - Thalita Alves Zanetti
- Department of General Biology, Center of Biological Sciences, Londrina State University - UEL, Londrina, Brazil
| | - Mário Sérgio Mantovani
- Department of General Biology, Center of Biological Sciences, Londrina State University - UEL, Londrina, Brazil
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16
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Wang F, Kong L, Pu Y, Chao F, Zang C, Qin W, Zhao F, Cai S. Long Noncoding RNA DICER1-AS1 Functions in Methylation Regulation on the Multi-Drugresistance of Osteosarcoma Cells via miR-34a-5p and GADD45A. Front Oncol 2021; 11:685881. [PMID: 34307152 PMCID: PMC8299526 DOI: 10.3389/fonc.2021.685881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 06/07/2021] [Indexed: 12/18/2022] Open
Abstract
Osteosarcoma (OS) is a common malignant bone tumor that commonly occurs in children and adolescents. Long noncoding RNAs (lncRNAs) are recognized as a novel class of regulators of gene expression associated with tumorigenesis. However, the effect and mechanism of lncRNAs in OS tumorigenesis and drug resistance have not been characterized. The purpose of the study is to screen potential biomarker and therapeutic target against OS. We compared the lncRNA expression profiles between OS cell lines with different drug resistance levels using RNA-seq analysis and found that lncRNA DICER1-AS1 was significantly differentially expressed in multi-drugresistant OS cells SJSA-1 versus multi-drugsensitive OS cells G-292. Bisulfite Sequencing PCR (BSP) assay was performed to analyze the differential methylation status of the promoter region of DICER1-AS1 in four OS cells. Subsequently, in vitro gain- and loss-of-function experiments demonstrated the roles of DICER1-AS1 and miR-34a-5p in the multi-drugresistance of OS cells. The main findings is that DICER1-AS1 directly binds to miR-34a-5p, and their expression has a negative correlation with each other. The hypermethylation of the promoter region of DICER1-AS1 silenced its expression in the drugresistant cells SJSA-1 and MNNG/HOS. Moreover, we found that growth arrest and DNA damage-inducible alpha (GADD45A) participates in the DICER1-AS1/miR-34a-5p-regulated drug resistance of OS cells, probably via the cell cycle/pRb-E2F pathway. Our results revealed DICER1-AS1/miR-34a-5p-regulated drug resistance of OS cells, a new lncRNA-regulated network in OS tumorigenesis, suggested that DICER1-AS1 can be considered as a potential biomarker and therapeutic target against OS cells.
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Affiliation(s)
- Feng Wang
- Department of Oncology, The First Affiliated Hospital of University of Science and Technology of China (USTC), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Lingsuo Kong
- Department of Anesthesiology, West district of The First Affiliated Hospital of USTC, Division of life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Youguang Pu
- Department of Cancer Epigenetics Program, Anhui Provincial Cancer Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Fengmei Chao
- Department of Cancer Epigenetics Program, Anhui Provincial Cancer Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Chunbao Zang
- Department of Radiation Oncology, Anhui Provincial Cancer Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Wei Qin
- Department of Science and Education Section, Anhui Provincial Cancer Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Fangfang Zhao
- Department of Cancer Epigenetics Program, Anhui Provincial Cancer Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Shanbao Cai
- Department of Orthopedic Surgery, Anhui Provincial Cancer Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
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Yang Y, Shang H. Silencing lncRNA-DGCR5 increased trophoblast cell migration, invasion and tube formation, and inhibited cell apoptosis via targeting miR-454-3p/ GADD45A axis. Mol Cell Biochem 2021; 476:3407-3421. [PMID: 33973132 DOI: 10.1007/s11010-021-04161-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 04/15/2021] [Indexed: 12/26/2022]
Abstract
Long noncoding RNA (lncRNA)-DGCR5 has been recognized as a potential tumor progression regulator, while its expression and specific functions in preeclampsia (PE) development remain unveiled. The expressions of miR-454-3p, lncRNA-DiGeorge syndrome critical region gene 5 (DGCR5) and growth arrest and DNA damage protein-inducible 45A (GADD45A) in placental tissues from PE patients or HTR-8/SVneo cells were assessed by Western blot or qRT-PCR. Dual-luciferase reporter assay determined the binding relations between miR-454-3p and GADD45A and between miR-454-3p and lncRNA-DGCR5. The viability, apoptosis, migration, invasiveness and tube formation of HTR-8/SVneo cell were evaluated using cell counting kit (CCK)-8, Annexin-V/Propidium iodide staining, wound healing, transwell and tube formation assays, respectively. miR-454-3p was low-expressed in PE tissue, and upregulation of miR-454-3p increased viability and promoted migration, invasion and tube formation in HTR-8/SVneo cells while inhibiting apoptosis. Then, miR-454-3p was found to directly target GADD45A which was high-expressed in PE tissues. Overexpressing GADD45A decreased the viability and inhibited the migration, invasion and tube formation of HTR-8/SVneo cells while enhancing apoptosis, and it neutralized the effect of miR-454-3p upregulation. In turn, miR-454-3p upregulation reversed the effect of GADD45A overexpression. Meanwhile, miR-454-3p could also target lncRNA-DGCR5. Silencing lncRNA-DGCR5 increased miR-454-3p expression and cell viability and promoted migration, invasion and tube formation in HTR-8/SVneo cells while inhibiting apoptosis, and it counteracted the effect of miR-454-3p downregulation. As usual, miR-454-3p downregulation reversed the effect of lncRNA-DGCR5 silencing. To conclude, silencing lncRNA-DGCR5 increased viability, promoted migration, invasion and tube formation, and inhibited apoptosis in HTR-8/SVneo cells by rescuing the inhibition of GADD45A expression caused by miR-454-3p.
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Affiliation(s)
- Yanlin Yang
- Department of Obstetrics and Gynecology, Shanxi Bethune Hospital Shanxi Academy of Medical Sciences, No.99, Longcheng Street, Taiyuan, 030032, China.
| | - Haixia Shang
- Department of Obstetrics and Gynecology, Shanxi Bethune Hospital Shanxi Academy of Medical Sciences, No.99, Longcheng Street, Taiyuan, 030032, China
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Chi F, Wang Z, Li Y, Chang N. Knockdown of GINS2 inhibits proliferation and promotes apoptosis through the p53/ GADD45A pathway in non-small-cell lung cancer. Biosci Rep 2020; 40:BSR20193949. [PMID: 32181475 DOI: 10.1042/BSR20193949] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/25/2020] [Accepted: 02/05/2020] [Indexed: 12/12/2022] Open
Abstract
Lung cancer is a malignant tumour type with the highest morbidity and mortality, and non-small-cell lung cancer (NSCLC) is the most common pathological type. GINS complex subunit 2 (GINS2) is a member of the GINS family and is closely related to DNA replication and damage, participates in cell cycle regulation and plays a key role in cell proliferation and apoptosis. In the present study, we aimed to explore the role and underlying molecular mechanism of GINS2 in the development of NSCLC. The results showed that GINS2 is significantly increased in NSCLC tissues and cell lines. Knockdown of GINS2 significantly decreases cell proliferation, causing G2/M phase cell cycle arrest. Knockdown of GINS2 reverses the effect of nocodazole on the levels of cyclin-dependent kinase 1 (CDK1) and cyclin-B1. Meanwhile, knockdown of GINS2 significantly elevates the apoptosis rate and apoptosis-related protein Bax and decreases Bcl-2. In addition, GINS2 knockdown induces an increase in the levels of p53 and growth arrest and DNA damage 45A (GADD45A). Co-transfection with GINS2-siRNA and siRNA against p53 (p53-siRNA) or co-transfection with GINS2-siRNA and siRNA against GADD45A (GADD45A-siRNA) partially reverses the effects of GINS2 knockdown on cell proliferation and apoptosis. Taken together, these results indicate that GINS2 knockdown down-regulates cell proliferation, induces G2/M phase cell cycle arrest and increases apoptosis, possibly through the p53/GADD45A pathway.
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Yang C, Lee M, Song G, Lim W. tRNA Lys-Derived Fragment Alleviates Cisplatin-Induced Apoptosis in Prostate Cancer Cells. Pharmaceutics 2021; 13:55. [PMID: 33406670 DOI: 10.3390/pharmaceutics13010055] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/29/2020] [Accepted: 12/30/2020] [Indexed: 02/06/2023] Open
Abstract
Cisplatin is a standard treatment for prostate cancer, which is the third leading cause of cancer-related deaths among men globally. However, patients who have undergone cisplatin can rxperience relapse. tRNA-derived fragments (tRFs) are small non-coding RNAs generated via tRNA cleavage; their physiological activities are linked to the development of human diseases. Specific tRFs, including tRF-315 derived from tRNALys, are highly expressed in prostate cancer patients. However, whether tRF-315 regulates prostate cancer cell proliferation or apoptosis is unclear. Herein, we confirmed that tRF-315 expression was higher in prostate cancer cells (LNCaP, DU145, and PC3) than in normal prostate cells. tRF-315 prevented cisplatin-induced apoptosis and alleviated cisplatin-induced mitochondrial dysfunction in LNCaP and DU145 cells. Moreover, transfection of tRF-315 inhibitor increased the expression of apoptotic pathway-related proteins in LNCaP and DU145 cells. Furthermore, tRF-315 targeted the tumor suppressor gene GADD45A, thus regulating the cell cycle, which was altered by cisplatin in LNCaP and DU145 cells. Thus, tRF-315 protects prostate cancer cells from mitochondrion-dependent apoptosis induced by cisplatin treatment.
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Hnatiuk OS, Tsymbal DO, Minchenko DO, Khita OO, Viletska YM, Rundytska OV, Kozynkevych HE, Maslak HS, Minchenko OH. Insulin receptor substrate 1 gene expression is strongly up-regulated by HSPB8 silencing in U87 glioma cells. Endocr Regul 2020; 54:231-43. [PMID: 33885248 DOI: 10.2478/enr-2020-0026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Objective. The aim of the present investigation was to study the expression of genes encoding IRS1 (insulin receptor substrate 1) and some other functionally active proteins in U87 glioma cells under silencing of polyfunctional chaperone HSPB8 for evaluation of the possible significance of this protein in intergenic interactions.Methods. Silencing of HSPB8 mRNA was introduced by HSPB8 specific siRNA. The expression level of HSPB8, IRS1, HK2, GLO1, HOMER3, MYL9, NAMPT, PER2, PERP, GADD45A, and DEK genes was studied in U87 glioma cells by quantitative polymerase chain reaction.Results. It was shown that silencing of HSPB8 mRNA by specific to HSPB8 siRNA led to a strong down-regulation of this mRNA and significant modification of the expression of IRS1 and many other genes in glioma cells: strong up-regulated of HOMER3, GLO1, and PERP and down-regulated of MYL9, NAMPT, PER2, GADD45A, and DEK gene expressions. At the same time, no significant changes were detected in the expression of HK2 gene in glioma cells treated by siRNA, specific to HSPB8. Moreover, the silencing of HSPB8 mRNA enhanced the glioma cells proliferation rate.Conclusions. Results of this investigation demonstrated that silencing of HSPB8 mRNA affected the expression of IRS1 gene as well as many other genes encoding tumor growth related proteins. It is possible that the dysregulation of most of the studied genes in glioma cells after silencing of HSPB8 is reflected by a complex of intergenic interactions and that this polyfunctional chaperone is an important factor for the stability of genome function and regulatory mechanisms contributing to the tumorigenesis control.
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Lou M, Li R, Lang TY, Zhang LY, Zhou Q, Li L. Aberrant methylation of GADD45A is associated with decreased radiosensitivity in cervical cancer through the PI3K/AKT signaling pathway. Oncol Lett 2020; 21:8. [PMID: 33240414 PMCID: PMC7681222 DOI: 10.3892/ol.2020.12269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 10/08/2020] [Indexed: 12/12/2022] Open
Abstract
Epigenetic inactivation of GADD45A is a common occurrence in different types of cancer. However, little is known regarding its association with radiosensitivity in cervical cancer (CC). Thus, the present study aimed to investigate the association between aberrant GADD45A methylation and radiosensitivity in CC. SiHa, HeLa and CaSki CC cells were treated with 5-azacytidine (5-azaC), with or without irradiation. The expression levels of GADD45A and AKT related molecules were detected via reverse transcription-quantitative PCR and western blot analyses. The methylation status of GADD45A was assessed via methylation-specific PCR and cell proliferation assays, while clonogenic assays and flow cytometric analysis were performed to assess the function of the genes (GADD45A and AKT) in the CC cell lines. The results demonstrated that methylation of GADD45A was significantly higher in the radioresistant tissues (63.16%) compared with the radiosensitive samples (33.33%). In addition, the surviving fraction of SiHa cells following irradiation with 2 Gy was demonstrated to be highest amongst the three CC cells (CaSki, 57±9.5%; HeLa, 70±4% and SiHa, 75±10%). The survival rate of SiHa cells following treatment with 5-azaC and ionizing radiation (IR) significantly decreased as the radiation dose increased, compared with treatment with IR alone. Following overexpression of GADD45A or treatment with 5-azaC, the radiosensitivity of SiHa cells significantly increased compared with both the control vector and PBS treated groups. In addition, the AKT inhibitor, MK-2206, increased the radiosensitivity of SiHa cells. Notably, aberrant methylation of GADD45A was associated with decreased radiosensitivity in CC, and the PI3K/AKT signaling pathway was essential for radioresistance, which was mediated through downregulation of GADD45A.
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Affiliation(s)
- Meng Lou
- Department of Gynecologic Oncology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Rong Li
- Department of Gynecologic Oncology, Chongqing University Cancer Hospital and Chongqing Cancer Institute and Chongqing Cancer Hospital, Chongqing 400030, P.R. China
| | - Ting-Yuan Lang
- Department of Gynecologic Oncology, Chongqing University Cancer Hospital and Chongqing Cancer Institute and Chongqing Cancer Hospital, Chongqing 400030, P.R. China
| | - Li-Ying Zhang
- Department of Gynecology, The Second Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi 530000, P.R. China
| | - Qi Zhou
- Department of Gynecologic Oncology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China.,Department of Gynecologic Oncology, Chongqing University Cancer Hospital and Chongqing Cancer Institute and Chongqing Cancer Hospital, Chongqing 400030, P.R. China.,Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital and Chongqing Cancer Institute and Chongqing Cancer Hospital, Chongqing 400030, P.R. China.,Key Laboratory for Biorheological Science and Technology of Ministry of Education, Chongqing University Cancer Hospital and Chongqing Cancer Institute and Chongqing Cancer Hospital, Chongqing 400030, P.R. China
| | - Li Li
- Department of Gynecologic Oncology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
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22
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Wang H, Huang Z, Zhao X, Guo B, Ji Z. miR-4270 regulates cell proliferation and apoptosis in patients with Sertoli cell-only syndrome by targeting GADD45A and inactivating the NOTCH signaling pathway. Am J Transl Res 2020; 12:5730-5740. [PMID: 33042452 PMCID: PMC7540124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 08/01/2020] [Indexed: 06/11/2023]
Abstract
In recent decades, growing data has suggested that microRNAs (miRNAs, miRs) play a critical role in the development of Sertoli cells (SC), including regulating SC maturation, synthesis, proliferation, and apoptosis. Previous reports of miRNA microarray have identified aberrant miR-4270 expression in patients with Sertoli-cell-only syndrome (SCOS). However, it is not known whether miR-4270 is associated with the pathogenesis of SCOS. In this study, we aimed to further investigate the roles and potential mechanisms of miR-4270 on SC proliferation and apoptosis. Our data confirmed that miR-4270 was significantly upregulated in SC of SCOS patients compared with healthy controls. EdU and CCK-8 assays showed silencing of miR-4270 by specific inhibitor significantly enhanced human SC and TM4 cells proliferation. ELISA and flow cytometry assays indicated that miR-4270 knockdown prominently suppressed the apoptosis of human SC and TM4 cells. Furthermore, expression of cell cycle genes, including CCNE1 (cyclin E1), CCND1 (cyclin D1) and CDK4 (cyclin dependent kinase 4), were obviously upregulated in human SC and TM4 cells by qRT-PCR assay after knockdown of miR-4270, while expression of cell apoptotic factors, including CASP3 (caspase 3), CASP6 (caspase 6) and CASP7 (caspase 7), were all markedly decreased. Notably, GADD45A (growth arrest and DNA damage inducible alpha) mRNA was downregulated in SC of SCOS patients, and negatively corrected with miR-4270 expression. Moreover, bioinformatics tools and dual-luciferase reporter assay identified that miR-4270 directly bound the 3'-UTR of GADD45A mRNA to inhibit GADD45A expression. Meanwhile, Western blots analysis validated that the protein expression levels of NOTCH1 (notch receptor 1) and HES1 (hes family bHLH transcription factor 1) were significantly increased in SC and TM4 cells after miR-4270 silencing or GADD45A overexpression. Taken together, our data demonstrated that miR-4270 regulates proliferation and apoptosis in SC of SCOS patients by inactivating NOTCH signaling pathway via GADD45A gene, which may offer a new insight into the development of human SC and provide a promising biomarker for the treatment of SCOS.
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Affiliation(s)
- Hai Wang
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical SciencesBeijing 100730, P. R. China
| | - Zhongming Huang
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical SciencesBeijing 100730, P. R. China
| | - Xin Zhao
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical SciencesBeijing 100730, P. R. China
| | - Boda Guo
- Department of Urology, Beijing Hospital, National Center of GerontologyBeijing 100730, P. R. China
| | - Zhigang Ji
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical SciencesBeijing 100730, P. R. China
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23
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Xie L, Jia L, Qu J, Chen D, Lv Y, Li H, Zheng J. Expression and prognostic significance of the P53-related DNA damage repair proteins checkpoint kinase 1 (CHK1) and growth arrest and DNA-damage-inducible 45 alpha ( GADD45A) in human oral squamous cell carcinoma. Eur J Oral Sci 2020; 128:128-135. [PMID: 32154612 DOI: 10.1111/eos.12685] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/28/2020] [Indexed: 02/06/2023]
Abstract
DNA damage repair is a key factor in the maintenance of cell genome stability, plays an important role in the regulation of tumour evolution, and can affect the prognosis of cancer patients. This study aimed to detect the protein expression of the DNA damage repair protein P53 and its upstream and downstream regulators, CHK1, GADD45A, and MDM2, in oral squamous cell carcinoma (OSCC), in order to analyse the association between the expression of these proteins and overall survival, and to assess their prognostic implications for OSCC patients. The expression of the above proteins was detected by immunohistochemistry in 80 human OSCC tissue samples and in non-cancerous tissue samples. Compared to that in the non-cancerous tissue, the expression of CHK1, GADD45A, and MDM2 in OSCC tissue was significantly increased. The protein expression of the tumour suppressor gene P53 was also increased. Patients with high CHK1 and MDM2 expression levels had a reduced survival time and a poor prognosis, whereas patients with high GADD45A expression levels had a good prognosis. Our results indicate that high CHK1 expression is an independent risk factor for poor OSCC prognosis, and that CHK1 may be a potential target for OSCC clinical treatment.
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Affiliation(s)
- Liping Xie
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Limin Jia
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Jinyue Qu
- Department of Stomatology, the Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Dong Chen
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Harbin Medical University, Harbin, China
| | - Yanhong Lv
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Haixia Li
- Department of Forensic Medicine, Harbin Medical University, Harbin, China
| | - Jinhua Zheng
- Department of Anatomy, Harbin Medical University, Harbin, China
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24
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Pietrasik S, Zajac G, Morawiec J, Soszynski M, Fila M, Blasiak J. Interplay between BRCA1 and GADD45A and Its Potential for Nucleotide Excision Repair in Breast Cancer Pathogenesis. Int J Mol Sci 2020; 21:E870. [PMID: 32013256 DOI: 10.3390/ijms21030870] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/26/2020] [Accepted: 01/27/2020] [Indexed: 12/12/2022] Open
Abstract
A fraction of breast cancer cases are associated with mutations in the BRCA1 (BRCA1 DNA repair associated, breast cancer type 1 susceptibility protein) gene, whose mutated product may disrupt the repair of DNA double-strand breaks as BRCA1 is directly involved in the homologous recombination repair of such DNA damage. However, BRCA1 can stimulate nucleotide excision repair (NER), the most versatile system of DNA repair processing a broad spectrum of substrates and playing an important role in the maintenance of genome stability. NER removes carcinogenic adducts of diol-epoxy derivatives of benzo[α]pyrene that may play a role in breast cancer pathogenesis as their accumulation is observed in breast cancer patients. NER deficiency was postulated to be intrinsic in stage I of sporadic breast cancer. BRCA1 also interacts with GADD45A (growth arrest and DNA damage-inducible protein GADD45 alpha) that may target NER machinery to actively demethylate genome sites in order to change the expression of genes that may be important in breast cancer. Therefore, the interaction between BRCA1 and GADD45 may play a role in breast cancer pathogenesis through the stimulation of NER, increasing the genomic stability, removing carcinogenic adducts, and the local active demethylation of genes important for cancer transformation.
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25
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Xu M, Xu X, Pan B, Chen X, Lin K, Zeng K, Liu X, Xu T, Sun L, Qin J, He B, Pan Y, Sun H, Wang S. LncRNA SATB2-AS1 inhibits tumor metastasis and affects the tumor immune cell microenvironment in colorectal cancer by regulating SATB2. Mol Cancer 2019; 18:135. [PMID: 31492160 PMCID: PMC6729021 DOI: 10.1186/s12943-019-1063-6] [Citation(s) in RCA: 177] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 08/28/2019] [Indexed: 12/11/2022] Open
Abstract
Background Emerging studies suggest that long non-coding RNAs (lncRNAs) play crucial roles in colorectal cancer (CRC). Here, we report a lncRNA, SATB2-AS1, which is specifically expressed in colorectal tissue and is significantly reduced in CRC. We systematically elucidated its functions and possible molecular mechanisms in CRC. Methods LncRNA expression in CRC was analyzed by RNA-sequencing and RNA microarrays. The expression level of SATB2-AS1 in tissues was determined by quantitative reverse transcription polymerase chain reaction (qRT-PCR) and in situ hybridization (ISH). The functional role of SATB2-AS1 in CRC was investigated by a series of in vivo and in vitro assays. RNA pull-down, RNA immunoprecipitation (RIP), chromatin immunoprecipitation (ChIP), chromatin isolation by RNA purification (ChIRP), Bisulfite Sequencing PCR (BSP) and bioinformatics analysis were utilized to explore the potential mechanisms of SATB2-AS1. Results SATB2-AS1 is specifically expressed in colorectal tissues and downregulated in CRC. Survival analysis indicates that decreased SATB2-AS1 expression is associated with poor survival. Functional experiments and bioinformatics analysis revealed that SATB2-AS1 inhibits CRC cell metastasis and regulates TH1-type chemokines expression and immune cell density in CRC. Mechanistically, SATB2-AS1 directly binds to WDR5 and GADD45A, cis-activating SATB2 (Special AT-rich binding protein 2) transcription via mediating histone H3 lysine 4 tri-methylation (H3K4me3) deposition and DNA demethylation of the promoter region of SATB2. Conclusions This study reveals the functions of SATB2-AS1 in CRC tumorigenesis and progression, suggesting new biomarkers and therapeutic targets in CRC. Electronic supplementary material The online version of this article (10.1186/s12943-019-1063-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mu Xu
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China
| | - Xueni Xu
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China.,School of Medicine, Southeast University, Nanjing, 210009, China
| | - Bei Pan
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China
| | - Xiaoxiang Chen
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China.,School of Medicine, Southeast University, Nanjing, 210009, China
| | - Kang Lin
- Department of Laboratory Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, China
| | - Kaixuan Zeng
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China.,School of Medicine, Southeast University, Nanjing, 210009, China
| | - Xiangxiang Liu
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China
| | - Tao Xu
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China
| | - Li Sun
- Department of Laboratory Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, 210011, China
| | - Jian Qin
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China
| | - Bangshun He
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China
| | - Yuqin Pan
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China
| | - Huiling Sun
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China
| | - Shukui Wang
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, No. 68, Changle Road, Nanjing, 210006, China.
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26
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Machado ART, Aissa AF, Ribeiro DL, Ferreira RS, Sampaio SV, Antunes LMG. BjussuLAAO-II induces cytotoxicity and alters DNA methylation of cell-cycle genes in monocultured/co-cultured HepG2 cells. J Venom Anim Toxins Incl Trop Dis 2019; 25:e147618. [PMID: 31131003 PMCID: PMC6527400 DOI: 10.1590/1678-9199-jvatitd-1476-18] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 10/22/2018] [Indexed: 12/18/2022] Open
Abstract
Background: The use of animal venoms and their toxins as material sources for
biotechnological applications has received much attention from the
pharmaceutical industry. L-amino acid oxidases from snake venoms (SV-LAAOs)
have demonstrated innumerous biological effects and pharmacological
potential against different cancer types. Hepatocellular carcinoma has
increased worldwide, and the aberrant DNA methylation of liver cells is a
common mechanism to promote hepatic tumorigenesis. Moreover, tumor
microenvironment plays a major role in neoplastic transformation. To
elucidate the molecular mechanisms responsible for the cytotoxic effects of
SV-LAAO in human cancer cells, this study aimed to evaluate the cytotoxicity
and the alterations in DNA methylation profiler in the promoter regions of
cell-cycle genes induced by BjussuLAAO-II, an LAAO from Bothrops
jaracussu venom, in human hepatocellular carcinoma (HepG2)
cells in monoculture and co-culture with endothelial (HUVEC) cells. Methods: BjussuLAAO-II concentrations were 0.25, 0.50, 1.00 and 5.00 μg/mL. Cell
viability was assessed by MTT assay and DNA methylation of the promoter
regions of 22 cell-cycle genes by EpiTect Methyl II PCR array. Results: BjussuLAAO-II decreased the cell viability of HepG2 cells in monoculture at
all concentrations tested. In co-culture, 1.00 and 5.00 μg/mL induced
cytotoxicity (p < 0.05). BjussuLAAO-II increased the
methylation of CCND1 and decreased the methylation of
CDKN1A in monoculture and GADD45A in
both cell-culture models (p < 0.05). Conclusion: Data showed BjussuLAAO-II induced cytotoxicity and altered DNA methylation of
the promoter regions of cell-cycle genes in HepG2 cells in monoculture and
co-culture models. We suggested the analysis of DNA methylation profile of
GADD45A as a potential biomarker of the cell cycle
effects of BjussuLAAO-II in cancer cells. The tumor microenvironment should
be considered to comprise part of biotechnological strategies during the
development of snake-toxin-based novel drugs.
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Affiliation(s)
- Ana Rita Thomazela Machado
- Department of Clinical Analysis, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo - USP, Ribeirão Preto, SP, Brazil
| | - Alexandre Ferro Aissa
- Department of Clinical Analysis, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo - USP, Ribeirão Preto, SP, Brazil
| | - Diego Luis Ribeiro
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo - USP, Ribeirão Preto, SP, Brazil
| | - Rui Seabra Ferreira
- Center for the Study of Venoms and Venomous Animals (CEVAP), São Paulo State University - UNESP, Botucatu, SP, Brazil
| | - Suely Vilela Sampaio
- Department of Clinical Analysis, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo - USP, Ribeirão Preto, SP, Brazil
| | - Lusânia Maria Greggi Antunes
- Department of Clinical Analysis, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo - USP, Ribeirão Preto, SP, Brazil
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27
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Wang J, Wang Y, Long F, Yan F, Wang N, Wang Y. The expression and clinical significance of GADD45A in breast cancer patients. PeerJ 2018; 6:e5344. [PMID: 30128181 PMCID: PMC6098681 DOI: 10.7717/peerj.5344] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 07/09/2018] [Indexed: 01/21/2023] Open
Abstract
Background Growth arrest and DNA-damage-inducible protein 45 alpha (GADD45A) was previously found to be associated with risk of several kinds of human tumors. Here, we studied the expression and clinical significance of GADD45A in breast cancer. Methods We performed an immunohistochemical study of GADD45A protein from 419 breast cancer tissues and 116 adjacent non-neoplastic tissues. Results Significantly high GADD45A expression were observed in breast cancer tissues compared with adjacent non-neoplastic tissues (P < 0.001) and were independently correlative with estrogen receptor negative (P = 0.028) and high Ki-67 index (P < 0.001). Kaplan-Meier survival analysis revealed that patients with high GADD45A expression levels had a worse long-term prognosis in triple negative breast cancer (P = 0.041), but it was not an independent prognostic factor in multivariate analysis (P = 0.058). Conclusions GADD45A expression levels are significantly correlative with estrogen receptor status and Ki-67 index in human breast cancer. Patients with triple negative breast cancer might be stratified into high risk and low risk groups based on the GADD45A expression levels.
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Affiliation(s)
- Junnan Wang
- Basic Medical College, Navy Medical University, Shanghai, China
| | - Yiran Wang
- Changhai Hospital, Navy Medical University, Shanghai, China
| | - Fei Long
- Department of Oncology, Changhai Hospital, Navy Medical University, Shanghai, China
| | - Fengshang Yan
- Basic Medical College, Navy Medical University, Shanghai, China
| | - Ning Wang
- Department of Oncology, Changhai Hospital, Navy Medical University, Shanghai, China
| | - Yajie Wang
- Department of Oncology, Changhai Hospital, Navy Medical University, Shanghai, China
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28
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Tan Y, Xiao D, Xu Y, Wang C. Long non-coding RNA DLX6-AS1 is upregulated in preeclampsia and modulates migration and invasion of trophoblasts through the miR-376c/ GADD45A axis. Exp Cell Res 2018; 370:718-724. [PMID: 30055134 DOI: 10.1016/j.yexcr.2018.07.039] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 07/23/2018] [Accepted: 07/24/2018] [Indexed: 12/20/2022]
Abstract
Long non-coding RNA (lncRNA) are key regulatory molecules that are implicated in diverse biological processes and human diseases, including preeclampsia. However, their expression and functions in the progression of preeclampsia remains largely unclear. In this study, lncRNA DLX6-AS1 was confirmed to be significantly upregulated in the placentas of patients with preeclampsia, compared with normal controls. Overexpression of DLX6-AS1 dramatically decreased proliferation, migration and invasion in trophoblast JEG3 and HTR-8/SVneo cells. Luciferase activity and RNA pull-down assays showed that DLX6-AS1 interacted with miR-376c, and that overexpression of DLX6-AS1 significantly reduced expression of miR-376c in HTR-8/SVneo cells. Also, miR-376c targeted and downregulated GADD45A in HTR-8/SVneo cells. Overexpression of GADD45A effectively attenuated a miR-376c-induced increase in the proliferation, migration and invasion of HTR-8/SVneo cells. Further research showed that DLX6-AS1-induced inhibition of trophoblast proliferation, migration and invasion was effectively neutralized by GADD45A knockdown and miR-376c overexpression. Taken together, these findings suggest that DLX6-AS1 may contribute to preeclampsia by impairing proliferative, migratory and invasive abilities of trophoblasts via the miR-376c/GADD45A axis.
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Affiliation(s)
- Yan Tan
- Department of Gynecology and Obstetrics, Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University (Shenzhen Maternity & Child Healthcare Hospital), Shenzhen 518028, Guangdong, China
| | - Di Xiao
- Department of Gynecology and Obstetrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510150, Guangdong, China
| | - Yanbin Xu
- Department of Gynecology and Obstetrics, Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University (Shenzhen Maternity & Child Healthcare Hospital), Shenzhen 518028, Guangdong, China
| | - Chenhong Wang
- Department of Gynecology and Obstetrics, Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University (Shenzhen Maternity & Child Healthcare Hospital), Shenzhen 518028, Guangdong, China; Department of Gynecology and Obstetrics, Shenzhen Hospital, Southern Medical University, Shenzhen 518000, Guangdong, China.
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29
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Cui D, Sajan P, Shi J, Shen Y, Wang K, Deng X, Zhou L, Hu P, Gao L. MiR-148a increases glioma cell migration and invasion by downregulating GADD45A in human gliomas with IDH1 R132H mutations. Oncotarget 2018; 8:25345-25361. [PMID: 28445981 PMCID: PMC5421935 DOI: 10.18632/oncotarget.15867] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 02/13/2017] [Indexed: 01/09/2023] Open
Abstract
High-grade gliomas are severe tumors with poor prognosis. An R132H mutation in the isocitrate dehydrogenase (IDH1) gene prolongs the life of glioma patients. In this study, we investigated which genes are differentially regulated in IDH1 wild type (IDH1WT) or IDH1 R132H mutation (IDH1R132H) glioblastoma cells. Growth arrest and DNA-damage-inducible protein (GADD45A) was downregulated and microRNA 148a (miR-148a) was upregulated in in IDH1R132H human glioblastomas tissues. The relationship between GADD45A and miR-148a is unknown. In vitro experiments showed that GADD45A negatively regulates IDH1R132H glioma cell proliferation, migration, and invasion, and neurosphere formation in IDH1R132H glioblastoma stem cells (GSC). In addition, a human orthotopic xenograft mouse model showed that GADD45A reduced tumorigenesis in vivo. Our findings demonstrated that miR-148a promotes glioma cell invasion and tumorigenesis by downregulating GADD45A. Our findings provide novel insights into how GADD45A is downregulated by miR-148a in IDH1R132H glioma and may help to identify therapeutic targets for the effective treatment of high-grade glioma.
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Affiliation(s)
- Daming Cui
- Department of Neurosurgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, People's Republic of China
| | - Pandey Sajan
- Department of Neurosurgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, People's Republic of China
| | - Jinlong Shi
- Department of Neurosurgery, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu Province, People's Republic of China
| | - Yiwen Shen
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200070, People's Republic of China
| | - Ke Wang
- Department of Neurosurgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, People's Republic of China
| | - Xianyu Deng
- Department of Neurosurgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, People's Republic of China
| | - Lin Zhou
- Department of Neurosurgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, People's Republic of China
| | - Pingping Hu
- Department of Neurosurgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, People's Republic of China
| | - Liang Gao
- Department of Neurosurgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, People's Republic of China
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30
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Abstract
GADD45A is a TP53-regulated and DNA damage-inducible tumor suppressor protein, which regulates cell cycle arrest, apoptosis, and DNA repair, and inhibits tumor growth and angiogenesis. However, the function of GADD45A in autophagy remains unknown. In this report, we demonstrate that GADD45A plays an important role in regulating the process of autophagy. GADD45A is able to decrease LC3-II expression and numbers of autophagosomes in mouse tissues and different cancer cell lines. Using bafilomycin A1 treatment, we have observed that GADD45A regulates autophagosome initiation. Likely, GADD45A inhibition of autophagy is through its influence on the interaction between BECN1 and PIK3C3. Immunoprecipitation and GST affinity isolation assays exhibit that GADD45A directly interacts with BECN1, and in turn dissociates the BECN1-PIK3C3 complex. Furthermore, we have mapped the 71 to 81 amino acids of the GADD45A protein that are necessary for the GADD45A interaction with BECN1. Knockdown of BECN1 can abolish autophagy alterations induced by GADD45A. Taken together, these findings provide the novel evidence that GADD45A inhibits autophagy via impairing the BECN1-PIK3C3 complex formation.
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Affiliation(s)
- Dongdong Zhang
- a State Key Laboratory of Molecular Oncology; Cancer Institute and Hospital; Chinese Academy of Medical Sciences & Peking Union Medical College ; Beijing , China.,b CAS Key Laboratory of RNA Biology; Institute of Biophysics; Chinese Academy of Sciences ; Beijing , China
| | - Weimin Zhang
- a State Key Laboratory of Molecular Oncology; Cancer Institute and Hospital; Chinese Academy of Medical Sciences & Peking Union Medical College ; Beijing , China
| | - Dan Li
- a State Key Laboratory of Molecular Oncology; Cancer Institute and Hospital; Chinese Academy of Medical Sciences & Peking Union Medical College ; Beijing , China
| | - Ming Fu
- a State Key Laboratory of Molecular Oncology; Cancer Institute and Hospital; Chinese Academy of Medical Sciences & Peking Union Medical College ; Beijing , China
| | - Runsheng Chen
- b CAS Key Laboratory of RNA Biology; Institute of Biophysics; Chinese Academy of Sciences ; Beijing , China
| | - Qimin Zhan
- a State Key Laboratory of Molecular Oncology; Cancer Institute and Hospital; Chinese Academy of Medical Sciences & Peking Union Medical College ; Beijing , China.,c Collaborative Innovation Center For Biotherapy; West China Hospital; Sichuan University ; Sichuan , China
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31
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Chen L, Tian H, Li M, Ge C, Zhao F, Zhang L, Li H, Liu J, Wang T, Yao M, Li J. Derivate isocorydine inhibits cell proliferation in hepatocellular carcinoma cell lines by inducing G2/M cell cycle arrest and apoptosis. Tumour Biol 2015; 37:5951-61. [PMID: 26596832 DOI: 10.1007/s13277-015-4362-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Accepted: 10/30/2015] [Indexed: 12/15/2022] Open
Abstract
We have previously demonstrated that isocorydine (ICD) can be served as a potential antitumor agent in hepatocellular carcinoma (HCC). A novel derivate of isocorydine (d-ICD) could significantly improve its anticancer activity in tumors. However, the molecular mechanisms of d-ICD on HCC cells remain to be unclear. In this study, we observed that d-ICD inhibited cell proliferation and induced apoptosis of HCC cells in a concentration-dependent manner. We found d-ICD induced G2/M cycle arrest of HCC cells via DNA damage 45 alpha (GADD45A) and p21 pathway in vitro and in vivo. In d-ICD-treated cells, cell cycle-related proteins cyclin B1 and p-CDC2 were upregulated and p-cyclin B1, CDC2, and E2F1 were inhibited. p21 expression can be reversed by knockdown of GADD45A in d-ICD-treated HCC cells. Enforced expression of CCAAT/enhancer-binding protein β (C/EBPβ) in combination with d-ICD enhanced the p21 expression in HCC cells. Furthermore, the luciferase reporter assay showed that upregulation of GADD45A by C/EBPβ was achieved through the increase of GADD45A promoter activity. These findings indicate that d-ICD inhibits cell proliferation and induces cell cycle arrest through activation of C/EBPβ-GADD45A-p21 pathway in HCC cells. d-ICD might be a promising chemotherapeutic agent for the treatment of HCC.
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Affiliation(s)
- Lijuan Chen
- Shanghai Medical College, Fudan University, Shanghai, China.,State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Jiaotong University School of Medicine, Shanghai, China
| | - Hua Tian
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Jiaotong University School of Medicine, Shanghai, China
| | - Meng Li
- Shanghai Medical College, Fudan University, Shanghai, China.,State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Jiaotong University School of Medicine, Shanghai, China
| | - Chao Ge
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Jiaotong University School of Medicine, Shanghai, China
| | - Fangyu Zhao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Jiaotong University School of Medicine, Shanghai, China
| | - Lixing Zhang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Jiaotong University School of Medicine, Shanghai, China
| | - Hong Li
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Jiaotong University School of Medicine, Shanghai, China
| | - Junxi Liu
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory Fornatural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China
| | - Tingpu Wang
- College of Life Sciences and Chemistry, Tianshui Normal University, Tianshui, China
| | - Ming Yao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Jiaotong University School of Medicine, Shanghai, China
| | - Jinjun Li
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Jiaotong University School of Medicine, Shanghai, China.
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32
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Ishiguro H, Kimura M, Takahashi H, Tanaka T, Mizoguchi K, Takeyama H. GADD45A expression is correlated with patient prognosis in esophageal cancer. Oncol Lett 2015; 11:277-282. [PMID: 26870203 DOI: 10.3892/ol.2015.3882] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Accepted: 09/09/2015] [Indexed: 01/18/2023] Open
Abstract
The prognosis of patients with esophageal cancer remains poor, and the tumor-node-metastasis classification system is not sufficient for predicting patient prognoses. Therefore, the identification of novel predictive markers for esophageal cancer is required. The present study investigated the clinicopathological significance of growth arrest and DNA damage-inducible 45α (GADD45A) and p53 in resectable esophageal squamous cell carcinoma (ESCC). The study consisted of 62 patients with esophageal cancer who underwent surgery between 2001 and 2007. The expression of the GADD45A gene product (GADD45A) and the p53 protein was analyzed by immunohistochemistry. The correlations among GADD45A expression, clinicopathological factors and prognosis were then analyzed in the patients with ESCC. GADD45A and p53 were expressed in 56.5% (35/62) and 48.4% (30/62) of patients, respectively. The expression of GADD45A did not show a marked correlation with that of p53. However, GADD45A expression correlated with pathological stage (stage 0-I vs. stages II-IV; P=0.014) and did not correlate with the tumor (T) or node (N) status. Furthermore, patients who were positive for GADD45A exhibited a significantly higher survival rate than those who were negative for GADD45A (log-rank test, P=0.009). Multivariate analysis indicated that T status, N status and GADD45A expression were significant variables predicting survival (hazard ratio, 2.486; 95% confidence interval, 1.168-5.290; P=0.018). Overall, GADD45A expression significantly affected the survival of patients with ESCC, and the reduced expression of GADD45A was correlated with a poor prognosis following curative surgery in these patients.
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Affiliation(s)
- Hideyuki Ishiguro
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medical Science, Nagoya, Aichi 467-8601, Japan
| | - Masahiro Kimura
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medical Science, Nagoya, Aichi 467-8601, Japan
| | - Hiroki Takahashi
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medical Science, Nagoya, Aichi 467-8601, Japan
| | - Tatsuya Tanaka
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medical Science, Nagoya, Aichi 467-8601, Japan
| | - Koji Mizoguchi
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medical Science, Nagoya, Aichi 467-8601, Japan
| | - Hiromitsu Takeyama
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medical Science, Nagoya, Aichi 467-8601, Japan
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