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De L, Xing N, Du Q, Guo S, Wang S. Investigating the anti-lung cancer properties of Zhuang medicine Cycas revoluta Thunb. leaves targeting ion channels and transporters through a comprehensive strategy. Comput Biol Chem 2024; 112:108156. [PMID: 39067352 DOI: 10.1016/j.compbiolchem.2024.108156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 06/24/2024] [Accepted: 07/16/2024] [Indexed: 07/30/2024]
Abstract
BACKGROUND Cycas revoluta Thunb., known for its ornamental, economic, and medicinal value, has leaves often discarded as waste. However, in ethnic regions of China, the leaves (CRL) are used in folk medicine for anti-tumor properties, particularly for regulating pathways related to cancer. Recent studies on ion channels and transporters (ICTs) highlight their therapeutic potential against cancer, making it vital to identify CRL's active constituents targeting ICTs in lung cancer. PURPOSE This study aims to uncover bioactive substances in CRL and their mechanisms in regulating ICTs for lung cancer treatment using network pharmacology, bioinformatics, molecular docking, molecular dynamics (MD) simulations, in vitro cell assays and HPLC. METHODS We analyzed 62 CRL compounds, predicted targets using PubChem and SwissTargetPrediction, identified lung cancer and ICT targets via GeneCards, and visualized overlaps with R software. Interaction networks were constructed using Cytoscape and STRING. Gene expression, GO, and KEGG analyses were performed using R software. TCGA data provided insights into differential, correlation, survival, and immune analyses. Key interactions were validated through molecular docking and MD simulations. Main biflavonoids were quantified using HPLC, and in vitro cell viability assays were conducted for key biflavonoids. RESULTS Venn diagram analysis identified 52 intersecting targets and ten active CRL compounds. The PPI network highlighted seven key targets. GO and KEGG analysis showed CRL-targeted ICTs involved in synaptic transmission, GABAergic synapse, and proteoglycans in cancer. Differential expression and correlation analysis revealed significant differences in five core targets in lung cancer tissues. Survival analysis linked EGFR and GABRG2 with overall survival, and immune infiltration analysis associated the core targets with most immune cell types. Molecular docking indicated strong binding of CRL ingredients to core targets. HPLC revealed amentoflavone as the most abundant biflavonoid, followed by hinokiflavone, sciadopitysin, and podocarpusflavone A. MD simulations showed that podocarpusflavone A and amentoflavone had better binding stability with GABRG2, and the cell viability assay also proved that they had better anti-lung cancer potential. CONCLUSIONS This study identified potential active components, targets, and pathways of CRL-targeted ICTs for lung cancer treatment, suggesting CRL's utility in drug development and its potential beyond industrial waste.
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Affiliation(s)
- Luo De
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Ethnic Medicine, Meishan Traditional Chinese Medicine Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Nan Xing
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Qinyun Du
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Sa Guo
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Shaohui Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Ethnic Medicine, Meishan Traditional Chinese Medicine Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
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Wu X, Fu M, Ge C, Zhou H, Huang H, Zhong M, Zhang M, Xu H, Zhu G, Hua W, Lv K, Yang H. m 6A-Mediated Upregulation of lncRNA CHASERR Promotes the Progression of Glioma by Modulating the miR-6893-3p/TRIM14 Axis. Mol Neurobiol 2024; 61:5418-5440. [PMID: 38193984 DOI: 10.1007/s12035-023-03911-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 12/28/2023] [Indexed: 01/10/2024]
Abstract
Long noncoding RNAs (lncRNAs) play crucial roles in tumor progression and are dysregulated in glioma. However, the functional roles of lncRNAs in glioma remain largely unknown. In this study, we utilized the TCGA (the Cancer Genome Atlas database) and GEPIA2 (Gene Expression Profiling Interactive Analysis 2) databases and observed the overexpression of lncRNA CHASERR in glioma tissues. We subsequently investigated this phenomenon in glioma cell lines. The effects of lncRNA CHASERR on glioma proliferation, migration, and invasion were analyzed using in vitro and in vivo experiments. Additionally, the regulatory mechanisms among PTEN/p-Akt/mTOR and Wnt/β-catenin, lncRNA CHASERR, Micro-RNA-6893-3p(miR-6893-3p), and tripartite motif containing14 (TRIM14) were investigated via bioinformatics analyses, quantitative real-time PCR (qRT-PCR), western blot (WB), RNA immunoprecipitation (RIP), dual luciferase reporter assay, fluorescence in situ hybridization (FISH), and RNA sequencing assays. RIP and RT-qRCR were used to analyze the regulatory effect of N6-methyladenosine(m6A) on the aberrantly expressed lncRNA CHASERR. High lncRNA CHASERR expression was observed in glioma tissues and was associated with unfavorable prognosis in glioma patients. Further functional assays showed that lncRNA CHASERR regulates glioma growth and metastasis in vitro and in vivo. Mechanistically, lncRNA CHASERR sponged miR-6893-3p to upregulate TRIM14 expression, thereby facilitating glioma progression. Additionally, the activation of PTEN/p-Akt/mTOR and Wnt/β-catenin pathways by lncRNA CHASERR, miR-6893-3p, and TRIM14 was found to regulate glioma progression. Moreover, the upregulation of lncRNA CHASERR was observed in response to N6-methyladenosine modification, which was facilitated by METTL3/YTHDF1-mediated RNA transcripts. This study elucidates the m6A/lncRNACHASERR/miR-6893-3p/TRIM14 pathway that contributes to glioma progression and underscores the potential of lncRNA CHASERR as a novel prognostic indicator and therapeutic target for glioma.
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Affiliation(s)
- Xingwei Wu
- Anhui Province Key Laboratory of Non-Coding RNA Basic Research and Clinical Transformation, Wannan Medical College, Wuhu, 241001, China
- Key Laboratory of Non-Coding RNA Transformation Research of Anhui Higher Education Institution (Yijishan Hospital of Wannan Medical College), Wuhu, 241001, Anhui, China
- Central Laboratory, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241001, Anhui, China
| | - Minjie Fu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, 200040, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Neurosurgical Institute of Fudan University, Shanghai, China
| | - Chang Ge
- Department of Psychology, Zhejiang Sci-Tech University, Hangzhou, 310000, Zhejiang, China
| | - Hanyu Zhou
- Anhui Province Key Laboratory of Non-Coding RNA Basic Research and Clinical Transformation, Wannan Medical College, Wuhu, 241001, China
- Key Laboratory of Non-Coding RNA Transformation Research of Anhui Higher Education Institution (Yijishan Hospital of Wannan Medical College), Wuhu, 241001, Anhui, China
- Central Laboratory, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241001, Anhui, China
- Department of Psychology, Zhejiang Sci-Tech University, Hangzhou, 310000, Zhejiang, China
| | - Haoyu Huang
- Anhui Province Key Laboratory of Non-Coding RNA Basic Research and Clinical Transformation, Wannan Medical College, Wuhu, 241001, China
- Key Laboratory of Non-Coding RNA Transformation Research of Anhui Higher Education Institution (Yijishan Hospital of Wannan Medical College), Wuhu, 241001, Anhui, China
- Central Laboratory, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241001, Anhui, China
| | - Min Zhong
- Anhui Province Key Laboratory of Non-Coding RNA Basic Research and Clinical Transformation, Wannan Medical College, Wuhu, 241001, China
- Key Laboratory of Non-Coding RNA Transformation Research of Anhui Higher Education Institution (Yijishan Hospital of Wannan Medical College), Wuhu, 241001, Anhui, China
- Central Laboratory, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241001, Anhui, China
- Department of Psychology, Zhejiang Sci-Tech University, Hangzhou, 310000, Zhejiang, China
| | - Mengying Zhang
- Anhui Province Key Laboratory of Non-Coding RNA Basic Research and Clinical Transformation, Wannan Medical College, Wuhu, 241001, China
- Key Laboratory of Non-Coding RNA Transformation Research of Anhui Higher Education Institution (Yijishan Hospital of Wannan Medical College), Wuhu, 241001, Anhui, China
- Central Laboratory, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241001, Anhui, China
- Department of Psychology, Zhejiang Sci-Tech University, Hangzhou, 310000, Zhejiang, China
| | - Hao Xu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Guoping Zhu
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, 241001, Anhui, China.
- College of Life Sciences, Key Laboratory of Biomedicine in Gene Diseases and Health of Anhui Higher Education Institutes, Anhui Normal University, Wuhu, 241001, Anhui, China.
- Auhui Provincial Engineering Research Centre for Molecular Detection and Diagnostics, College of Life Sciences, Anhui Normal University, Wuhu, 241001, Anhui, China.
| | - Wei Hua
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, 200040, China.
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Neurosurgical Institute of Fudan University, Shanghai, China.
| | - Kun Lv
- Anhui Province Key Laboratory of Non-Coding RNA Basic Research and Clinical Transformation, Wannan Medical College, Wuhu, 241001, China.
- Key Laboratory of Non-Coding RNA Transformation Research of Anhui Higher Education Institution (Yijishan Hospital of Wannan Medical College), Wuhu, 241001, Anhui, China.
- Central Laboratory, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241001, Anhui, China.
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, 241001, Anhui, China.
- College of Life Sciences, Key Laboratory of Biomedicine in Gene Diseases and Health of Anhui Higher Education Institutes, Anhui Normal University, Wuhu, 241001, Anhui, China.
- Auhui Provincial Engineering Research Centre for Molecular Detection and Diagnostics, College of Life Sciences, Anhui Normal University, Wuhu, 241001, Anhui, China.
- Clinical Research Center for Critical Respiratory Medicine of Anhui Province, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241001, Anhui, China.
| | - Hui Yang
- Anhui Province Key Laboratory of Non-Coding RNA Basic Research and Clinical Transformation, Wannan Medical College, Wuhu, 241001, China.
- Key Laboratory of Non-Coding RNA Transformation Research of Anhui Higher Education Institution (Yijishan Hospital of Wannan Medical College), Wuhu, 241001, Anhui, China.
- Central Laboratory, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241001, Anhui, China.
- Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases, College of Life Sciences, Anhui Normal University, Wuhu, 241001, Anhui, China.
- College of Life Sciences, Key Laboratory of Biomedicine in Gene Diseases and Health of Anhui Higher Education Institutes, Anhui Normal University, Wuhu, 241001, Anhui, China.
- Auhui Provincial Engineering Research Centre for Molecular Detection and Diagnostics, College of Life Sciences, Anhui Normal University, Wuhu, 241001, Anhui, China.
- Clinical Research Center for Critical Respiratory Medicine of Anhui Province, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241001, Anhui, China.
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Elkhalifa AEO, Banu H, Khan MI, Ashraf SA. Integrated Network Pharmacology, Molecular Docking, Molecular Simulation, and In Vitro Validation Revealed the Bioactive Components in Soy-Fermented Food Products and the Underlying Mechanistic Pathways in Lung Cancer. Nutrients 2023; 15:3949. [PMID: 37764733 PMCID: PMC10537301 DOI: 10.3390/nu15183949] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/03/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
Globally, lung cancer remains one of the leading causes of cancer-related mortality, warranting the exploration of novel and effective therapeutic approaches. Soy-fermented food products have long been associated with potential health benefits, including anticancer properties. There is still a lack of understanding of the active components of these drugs as well as their underlying mechanistic pathways responsible for their anti-lung cancer effects. In this study, we have undertaken an integrated approach combining network pharmacology and molecular docking to elucidate the mechanism of action of soy-fermented food products against lung cancer through simulation and in vitro validation. Using network pharmacology, we constructed a comprehensive network of interactions between the identified isoflavones in soy-fermented food products and lung cancer-associated targets. Molecular docking was performed to predict the binding affinities of these compounds with key lung cancer-related proteins. Additionally, molecular simulation was utilized to investigate the stability of the compound-target complexes over time, providing insights into their dynamic interactions. Our results identified daidzein as a potential active component in soy-fermented food products with high binding affinities towards critical lung cancer targets. Molecular dynamic simulations confirmed the stability of the daidzein-MMP9 and daidzein-HSP90AA1 complexes, suggesting their potential as effective inhibitors. Additionally, in vitro validation experiments demonstrated that treatment with daidzein significantly inhibited cancer cell proliferation and suppressed cancer cell migration and the invasion of A549 lung cancer cells. Consequently, the estrogen signaling pathway was recognized as the pathway modulated by daidzein against lung cancer. Overall, the findings of the present study highlight the therapeutic potential of soy-fermented food products in lung cancer treatment and provide valuable insights for the development of targeted therapies using the identified bioactive compounds. Further investigation and clinical studies are warranted to validate these findings and translate them into clinical applications for improved lung cancer management.
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Affiliation(s)
- Abd Elmoneim O. Elkhalifa
- Department of Clinical Nutrition, College of Applied Medical Sciences, University of Ha’il, Ha’il P.O. Box 2440, Saudi Arabia
| | - Humera Banu
- Department of Clinical Nutrition, College of Applied Medical Sciences, University of Ha’il, Ha’il P.O. Box 2440, Saudi Arabia
| | - Mohammad Idreesh Khan
- Department of Clinical Nutrition, College of Applied Health Sciences in Ar Rass, Qassim University, Ar Rass 51921, Saudi Arabia
| | - Syed Amir Ashraf
- Department of Clinical Nutrition, College of Applied Medical Sciences, University of Ha’il, Ha’il P.O. Box 2440, Saudi Arabia
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4
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Liu B, Shen H, He J, Jin B, Tian Y, Li W, Hou L, Zhao W, Nan J, Zhao J, Shen J, Yu H, Wang Y, Shan G, Shi L, Cai X. Cytoskeleton remodeling mediated by circRNA-YBX1 phase separation suppresses the metastasis of liver cancer. Proc Natl Acad Sci U S A 2023; 120:e2220296120. [PMID: 37459535 PMCID: PMC10372620 DOI: 10.1073/pnas.2220296120] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 05/22/2023] [Indexed: 07/20/2023] Open
Abstract
Metastasis, especially intrahepatic, is a major challenge for hepatocellular carcinoma (HCC) treatment. Cytoskeleton remodeling has been identified as a vital process mediating intrahepatic spreading. Previously, we reported that HCC tumor adhesion and invasion were modulated by circular RNA (circRNA), which has emerged as an important regulator of various cellular processes and has been implicated in cancer progression. Here, we uncovered a nuclear circRNA, circASH2, which is preferentially lost in HCC tissues and inhibits HCC metastasis by altering tumor cytoskeleton structure. Tropomyosin 4 (TPM4), a critical binding protein of actin, turned out to be the major target of circASH2 and was posttranscriptionally suppressed. Such regulation is based on messenger RNA (mRNA)/precursormRNA splicing and degradation process. Furthermore, liquid-liquid phase separation of nuclear Y-box binding protein 1 (YBX1) enhanced by circASH2 augments TPM4 transcripts decay. Together, our data have revealed a tumor-suppressive circRNA and, more importantly, uncovered a fine regulation mechanism for HCC progression.
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Affiliation(s)
- Boqiang Liu
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Zhejiang University, Hangzhou310016, China
- Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou310016, China
- Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou310016, China
| | - Hao Shen
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Zhejiang University, Hangzhou310016, China
- Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou310016, China
- Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou310016, China
| | - Jing He
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Zhejiang University, Hangzhou310016, China
- Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou310016, China
- Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou310016, China
| | - Binghan Jin
- Department of Endocrinology, The Children's Hospital, School of Medicine, National Clinical Research Center for Child Health, Zhejiang University, Hangzhou310053, China
| | - Yuanshi Tian
- Department of Diagnostic Ultrasound & Echocardiography, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
| | - Weiqi Li
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Zhejiang University, Hangzhou310016, China
- Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou310016, China
- Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou310016, China
| | - Lidan Hou
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Zhejiang University, Hangzhou310016, China
- Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou310016, China
- Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou310016, China
| | - Weijun Zhao
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Zhejiang University, Hangzhou310016, China
- Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou310016, China
- Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou310016, China
| | - Junjie Nan
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Zhejiang University, Hangzhou310016, China
- Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou310016, China
- Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou310016, China
| | - Jia Zhao
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Zhejiang University, Hangzhou310016, China
| | - Jiliang Shen
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Zhejiang University, Hangzhou310016, China
- Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou310016, China
- Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou310016, China
| | - Hong Yu
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Zhejiang University, Hangzhou310016, China
- Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou310016, China
- Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou310016, China
| | - Yifan Wang
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Zhejiang University, Hangzhou310016, China
- Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou310016, China
- Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou310016, China
| | - Ge Shan
- Zhejiang University Cancer Center, Zhejiang University, Hangzhou310030, China
- Department of Pulmonary and Critical Care Medicine, Regional medical center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
- Division of Life Science and Medicine, Department of Clinical Laboratory, First Affiliated Hospital of the University of Science and Technology of China, Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, University of Science and Technology of China, Hefei230027, China
| | - Liang Shi
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Zhejiang University, Hangzhou310016, China
- Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou310016, China
- Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou310016, China
| | - Xiujun Cai
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou310016, China
- Zhejiang Provincial Key Laboratory of Laparoscopic Technology, Zhejiang University, Hangzhou310016, China
- Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou310016, China
- Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou310016, China
- Zhejiang University Cancer Center, Zhejiang University, Hangzhou310030, China
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5
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Zhang W, Zhao J, Deng L, Ishimwe N, Pauli J, Wu W, Shan S, Kempf W, Ballantyne MD, Kim D, Lyu Q, Bennett M, Rodor J, Turner AW, Lu YW, Gao P, Choi M, Warthi G, Kim HW, Barroso MM, Bryant WB, Miller CL, Weintraub NL, Maegdefessel L, Miano JM, Baker AH, Long X. INKILN is a Novel Long Noncoding RNA Promoting Vascular Smooth Muscle Inflammation via Scaffolding MKL1 and USP10. Circulation 2023; 148:47-67. [PMID: 37199168 PMCID: PMC10330325 DOI: 10.1161/circulationaha.123.063760] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 04/14/2023] [Indexed: 05/19/2023]
Abstract
BACKGROUND Activation of vascular smooth muscle cell (VSMC) inflammation is vital to initiate vascular disease. The role of human-specific long noncoding RNAs in VSMC inflammation is poorly understood. METHODS Bulk RNA sequencing in differentiated human VSMCs revealed a novel human-specific long noncoding RNA called inflammatory MKL1 (megakaryoblastic leukemia 1) interacting long noncoding RNA (INKILN). INKILN expression was assessed in multiple in vitro and ex vivo models of VSMC phenotypic modulation as well as human atherosclerosis and abdominal aortic aneurysm. The transcriptional regulation of INKILN was verified through luciferase reporter and chromatin immunoprecipitation assays. Loss-of-function and gain-of-function studies and multiple RNA-protein and protein-protein interaction assays were used to uncover a mechanistic role of INKILN in the VSMC proinflammatory gene program. Bacterial artificial chromosome transgenic mice were used to study INKILN expression and function in ligation injury-induced neointimal formation. RESULTS INKILN expression is downregulated in contractile VSMCs and induced in human atherosclerosis and abdominal aortic aneurysm. INKILN is transcriptionally activated by the p65 pathway, partially through a predicted NF-κB (nuclear factor kappa B) site within its proximal promoter. INKILN activates proinflammatory gene expression in cultured human VSMCs and ex vivo cultured vessels. INKILN physically interacts with and stabilizes MKL1, a key activator of VSMC inflammation through the p65/NF-κB pathway. INKILN depletion blocks interleukin-1β-induced nuclear localization of both p65 and MKL1. Knockdown of INKILN abolishes the physical interaction between p65 and MKL1 and the luciferase activity of an NF-κB reporter. Furthermore, INKILN knockdown enhances MKL1 ubiquitination through reduced physical interaction with the deubiquitinating enzyme USP10 (ubiquitin-specific peptidase 10). INKILN is induced in injured carotid arteries and exacerbates ligation injury-induced neointimal formation in bacterial artificial chromosome transgenic mice. CONCLUSIONS These findings elucidate an important pathway of VSMC inflammation involving an INKILN/MKL1/USP10 regulatory axis. Human bacterial artificial chromosome transgenic mice offer a novel and physiologically relevant approach for investigating human-specific long noncoding RNAs under vascular disease conditions.
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Affiliation(s)
- Wei Zhang
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Jinjing Zhao
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
| | - Lin Deng
- Centre for Cardiovascular Science University of Edinburgh, Edinburgh, Scotland
| | - Nestor Ishimwe
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Jessica Pauli
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany
| | - Wen Wu
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
| | - Shengshuai Shan
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Wolfgang Kempf
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany
| | | | - David Kim
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Qing Lyu
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Matthew Bennett
- Centre for Cardiovascular Science University of Edinburgh, Edinburgh, Scotland
| | - Julie Rodor
- Centre for Cardiovascular Science University of Edinburgh, Edinburgh, Scotland
| | - Adam W. Turner
- Center for Public Health Genomics, University of Virginia, Charlottesville, VA, USA
| | - Yao Wei Lu
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
| | - Ping Gao
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
| | - Mihyun Choi
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
| | - Ganesh Warthi
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Ha Won Kim
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Margarida M Barroso
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
| | - William B. Bryant
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Clint L. Miller
- Center for Public Health Genomics, University of Virginia, Charlottesville, VA, USA
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA, USA
| | - Neal L. Weintraub
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Lars Maegdefessel
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany
- German Center for Cardiovascular Research (DZHK, partner site Munich), Germany
- Department of Medicine, Karolinska Institute, Stockholm, Sweden
| | - Joseph M. Miano
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Andrew H Baker
- Centre for Cardiovascular Science University of Edinburgh, Edinburgh, Scotland
| | - Xiaochun Long
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
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Zhang W, Zhao J, Deng L, Ishimwe N, Pauli J, Wu W, Shan S, Kempf W, Ballantyne MD, Kim D, Lyu Q, Bennett M, Rodor J, Turner AW, Lu YW, Gao P, Choi M, Warthi G, Kim HW, Barroso MM, Bryant WB, Miller CL, Weintraub NL, Maegdefessel L, Miano JM, Baker AH, Long X. INKILN is a novel long noncoding RNA promoting vascular smooth muscle inflammation via scaffolding MKL1 and USP10. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.07.522948. [PMID: 36711681 PMCID: PMC9881896 DOI: 10.1101/2023.01.07.522948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Background Activation of vascular smooth muscle cells (VSMCs) inflammation is vital to initiate vascular disease. However, the role of human-specific long noncoding RNAs (lncRNAs) in VSMC inflammation is poorly understood. Methods Bulk RNA-seq in differentiated human VSMCs revealed a novel human-specific lncRNA called IN flammatory M K L1 I nteracting L ong N oncoding RNA ( INKILN ). INKILN expression was assessed in multiple in vitro and ex vivo models of VSMC phenotypic modulation and human atherosclerosis and abdominal aortic aneurysm (AAA) samples. The transcriptional regulation of INKILN was determined through luciferase reporter system and chromatin immunoprecipitation assay. Both loss- and gain-of-function approaches and multiple RNA-protein and protein-protein interaction assays were utilized to uncover the role of INKILN in VSMC proinflammatory gene program and underlying mechanisms. Bacterial Artificial Chromosome (BAC) transgenic (Tg) mice were utilized to study INKLIN expression and function in ligation injury-induced neointimal formation. Results INKILN expression is downregulated in contractile VSMCs and induced by human atherosclerosis and abdominal aortic aneurysm. INKILN is transcriptionally activated by the p65 pathway, partially through a predicted NF-κB site within its proximal promoter. INKILN activates the proinflammatory gene expression in cultured human VSMCs and ex vivo cultured vessels. Mechanistically, INKILN physically interacts with and stabilizes MKL1, a key activator of VSMC inflammation through the p65/NF-κB pathway. INKILN depletion blocks ILIβ-induced nuclear localization of both p65 and MKL1. Knockdown of INKILN abolishes the physical interaction between p65 and MKL1, and the luciferase activity of an NF-κB reporter. Further, INKILN knockdown enhances MKL1 ubiquitination, likely through the reduced physical interaction with the deubiquitinating enzyme, USP10. INKILN is induced in injured carotid arteries and exacerbates ligation injury-induced neointimal formation in BAC Tg mice. Conclusions These findings elucidate an important pathway of VSMC inflammation involving an INKILN /MKL1/USP10 regulatory axis. Human BAC Tg mice offer a novel and physiologically relevant approach for investigating human-specific lncRNAs under vascular disease conditions.
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MKL-1-induced PINK1-AS overexpression contributes to the malignant progression of hepatocellular carcinoma via ALDOA-mediated glycolysis. Sci Rep 2022; 12:21283. [PMID: 36494481 PMCID: PMC9734095 DOI: 10.1038/s41598-022-24023-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 11/08/2022] [Indexed: 12/13/2022] Open
Abstract
Aldolase A (ALDOA), an important metabolic enzyme in the glycolytic pathway, plays an important role in regulating tumour metabolism. In this study, we investigated the expression pattern of ALDOA in hepatocellular carcinoma (HCC) and its biological role in tumour progression. Bioinformatics analysis, western blot (WB) and RT-qPCR were performed to detect the relative expression of ALDOA in HCC tissues and cell lines. A loss-of-function approach was used to investigate the biological function of ALDOA. The role of ALDOA on glycolysis was assessed by WB, glucose and lactate assay kits and a nude mouse xenograft model. Luciferase reporter experiment, chromatin immunoprecipitation and WB were performed to elucidate the underlying molecular. The expression level of ALODA was up-regulated in HCC tissues and cell lines. High ALDOA levels were associated with poorer patient overall survival. Mechanistic studies suggest that ALDOA is a direct target of miR-34a-5p, which can inhibit glycolysis in hepatocellular carcinoma cells by targeting the 3'UTR of ALDOA. PINK1 antisense RNA (PINK1-AS) competitively sponged miR-34a-5p to increase ALDOA expression by antagonizing miR-34a-5p-mediated ALDOA inhibition. MKL-1 acted as a transcription factor to promote the expression of PINK1-AS and ALDOA, thus promoting the deterioration of HCC cells. This study shows that high expression of ALDOA contributes to the development and poor prognosis of hepatocellular carcinoma and will be a target and potential prognostic biomarker for the treatment of HCC.
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Guo T, He C, Venado A, Zhou Y. Extracellular Matrix Stiffness in Lung Health and Disease. Compr Physiol 2022; 12:3523-3558. [PMID: 35766837 PMCID: PMC10088466 DOI: 10.1002/cphy.c210032] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The extracellular matrix (ECM) provides structural support and imparts a wide variety of environmental cues to cells. In the past decade, a growing body of work revealed that the mechanical properties of the ECM, commonly known as matrix stiffness, regulate the fundamental cellular processes of the lung. There is growing appreciation that mechanical interplays between cells and associated ECM are essential to maintain lung homeostasis. Dysregulation of ECM-derived mechanical signaling via altered mechanosensing and mechanotransduction pathways is associated with many common lung diseases. Matrix stiffening is a hallmark of lung fibrosis. The stiffened ECM is not merely a sequelae of lung fibrosis but can actively drive the progression of fibrotic lung disease. In this article, we provide a comprehensive view on the role of matrix stiffness in lung health and disease. We begin by summarizing the effects of matrix stiffness on the function and behavior of various lung cell types and on regulation of biomolecule activity and key physiological processes, including host immune response and cellular metabolism. We discuss the potential mechanisms by which cells probe matrix stiffness and convert mechanical signals to regulate gene expression. We highlight the factors that govern matrix stiffness and outline the role of matrix stiffness in lung development and the pathogenesis of pulmonary fibrosis, pulmonary hypertension, asthma, chronic obstructive pulmonary disease (COPD), and lung cancer. We envision targeting of deleterious matrix mechanical cues for treatment of fibrotic lung disease. Advances in technologies for matrix stiffness measurements and design of stiffness-tunable matrix substrates are also explored. © 2022 American Physiological Society. Compr Physiol 12:3523-3558, 2022.
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Affiliation(s)
- Ting Guo
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Alabama, USA.,Department of Respiratory Medicine, the Second Xiangya Hospital, Central-South University, Changsha, Hunan, China
| | - Chao He
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Alabama, USA
| | - Aida Venado
- Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, University of California San Francisco, San Francisco, California, USA
| | - Yong Zhou
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Alabama at Birmingham, Alabama, USA
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9
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Alcalá AC, Contreras MA, Cuevas-Juárez E, Ramírez OT, Palomares LA. Effect of sericin, a silk derived protein, on the amplification of Zika virus in insect and mammalian cell cultures. J Biotechnol 2022; 353:28-35. [PMID: 35623476 DOI: 10.1016/j.jbiotec.2022.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/15/2022] [Accepted: 05/13/2022] [Indexed: 02/07/2023]
Abstract
Sericin, a silk-derived non-immunogenic protein, has been used to improve cell culture performance by increasing viability, cell concentration, and promoting adherence of several cell lines. Here, we hypothesized that the properties of sericin can enhance the amplification of flaviviruses in cell cultures. The propagation of flavivirus is inefficient and limits scientific research. Zika virus (ZIKV) is an important human pathogen that has been widely studied because of its high impact on public health. There is a need to amplify Zika virus both for research and vaccine development. In this work, we show that sericin improves ZIKV amplification in insect (C6/36) and mammalian (Vero) cell cultures, and that it has a cryoprotectant capacity. Supplementation of cell culture media with sericin at 80 µg/mL resulted in a significant increase of 1 log in the concentration of ZIKV infectious particles produced from both cell lines. Furthermore, final virus yields increased between 5 and 10-fold in Vero cells and between 7 and 23-fold in C6/36 cells when sericin was supplemented, compared to control conditions. These results show that sericin is an effective supplement to increase ZIKV production by Vero and C6/36 cells. Additionally, sericin was a suitable cryoprotective agent, and hence an alternative to FBS and DMSO, for the cryopreservation of C6/36 cells but not for Vero cells.
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Affiliation(s)
- Ana C Alcalá
- Departamento de Medicina Molecular y Bioprocesosō, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Martha A Contreras
- Departamento de Medicina Molecular y Bioprocesosō, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Esmeralda Cuevas-Juárez
- Departamento de Medicina Molecular y Bioprocesosō, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Octavio T Ramírez
- Departamento de Medicina Molecular y Bioprocesosō, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México.
| | - Laura A Palomares
- Departamento de Medicina Molecular y Bioprocesosō, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México.
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Wang S, Li J, Wang Y. M2PP: a novel computational model for predicting drug-targeted pathogenic proteins. BMC Bioinformatics 2022; 23:7. [PMID: 34983358 PMCID: PMC8728953 DOI: 10.1186/s12859-021-04522-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 12/07/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Detecting pathogenic proteins is the origin way to understand the mechanism and resist the invasion of diseases, making pathogenic protein prediction develop into an urgent problem to be solved. Prediction for genome-wide proteins may be not necessarily conducive to rapidly cure diseases as developing new drugs specifically for the predicted pathogenic protein always need major expenditures on time and cost. In order to facilitate disease treatment, computational method to predict pathogenic proteins which are targeted by existing drugs should be exploited. RESULTS In this study, we proposed a novel computational model to predict drug-targeted pathogenic proteins, named as M2PP. Three types of features were presented on our constructed heterogeneous network (including target proteins, diseases and drugs), which were based on the neighborhood similarity information, drug-inferred information and path information. Then, a random forest regression model was trained to score unconfirmed target-disease pairs. Five-fold cross-validation experiment was implemented to evaluate model's prediction performance, where M2PP achieved advantageous results compared with other state-of-the-art methods. In addition, M2PP accurately predicted high ranked pathogenic proteins for common diseases with public biomedical literature as supporting evidence, indicating its excellent ability. CONCLUSIONS M2PP is an effective and accurate model to predict drug-targeted pathogenic proteins, which could provide convenience for the future biological researches.
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Affiliation(s)
- Shiming Wang
- School of Computer Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, China
| | - Jie Li
- School of Computer Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, China.
| | - Yadong Wang
- School of Computer Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, China.
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11
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Hypoxia in Lung Cancer Management: A Translational Approach. Cancers (Basel) 2021; 13:cancers13143421. [PMID: 34298636 PMCID: PMC8307602 DOI: 10.3390/cancers13143421] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/30/2021] [Accepted: 07/06/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Hypoxia is a common feature of lung cancers. Nonetheless, no guidelines have been established to integrate hypoxia-associated biomarkers in patient management. Here, we discuss the current knowledge and provide translational novel considerations regarding its clinical detection and targeting to improve the outcome of patients with non-small-cell lung carcinoma of all stages. Abstract Lung cancer represents the first cause of death by cancer worldwide and remains a challenging public health issue. Hypoxia, as a relevant biomarker, has raised high expectations for clinical practice. Here, we review clinical and pathological features related to hypoxic lung tumours. Secondly, we expound on the main current techniques to evaluate hypoxic status in NSCLC focusing on positive emission tomography. We present existing alternative experimental approaches such as the examination of circulating markers and highlight the interest in non-invasive markers. Finally, we evaluate the relevance of investigating hypoxia in lung cancer management as a companion biomarker at various lung cancer stages. Hypoxia could support the identification of patients with higher risks of NSCLC. Moreover, the presence of hypoxia in treated tumours could help clinicians predict a worse prognosis for patients with resected NSCLC and may help identify patients who would benefit potentially from adjuvant therapies. Globally, the large quantity of translational data incites experimental and clinical studies to implement the characterisation of hypoxia in clinical NSCLC management.
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12
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Zhang Z, Chen B, Zhu Y, Zhang T, Yuan Y, Zhang X, Xu Y. The Jumonji Domain-Containing Histone Demethylase Homolog 1D/lysine Demethylase 7A (JHDM1D/KDM7A) Is an Epigenetic Activator of RHOJ Transcription in Breast Cancer Cells. Front Cell Dev Biol 2021; 9:664375. [PMID: 34249916 PMCID: PMC8262595 DOI: 10.3389/fcell.2021.664375] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 04/08/2021] [Indexed: 12/12/2022] Open
Abstract
The small GTPase RHOJ is a key regulator of breast cancer metastasis by promoting cell migration and invasion. The prometastatic stimulus TGF-β activates RHOJ transcription via megakaryocytic leukemia 1 (MKL1). The underlying epigenetic mechanism is not clear. Here, we report that MKL1 deficiency led to disrupted assembly of the RNA polymerase II preinitiation complex on the RHOJ promoter in breast cancer cells. This could be partially explained by histone H3K9/H3K27 methylation status. Further analysis confirmed that the H3K9/H3K27 dual demethylase JHDM1D/KDM7A was essential for TGF-β-induced RHOJ transcription in breast cancer cells. MKL1 interacted with and recruited KDM7A to the RHOJ promoter to cooperatively activate RHOJ transcription. KDM7A knockdown attenuated migration and invasion of breast cancer cells in vitro and mitigated the growth and metastasis of breast cancer cells in nude mice. KDM7A expression level, either singularly or in combination with that of RHOJ, could be used to predict prognosis in breast cancer patients. Of interest, KDM7A appeared to be a direct transcriptional target of TGF-β signaling. A SMAD2/SMAD4 complex bound to the KDM7A promoter and mediated TGF-β-induced KDM7A transcription. In conclusion, our data unveil a novel epigenetic mechanism whereby TGF-β regulates the transcription of the prometastatic small GTPase RHOJ. Screening for small-molecule inhibitors of KDM7A may yield effective therapeutic solutions to treat malignant breast cancers.
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Affiliation(s)
- Ziyu Zhang
- Key Laboratory of Women's Reproductive Health of Jiangxi, Jiangxi Provincial Maternal and Child Health Hospital, Nanchang, China.,Central Laboratory, Jiangxi Provincial Maternal and Child Health Hospital, Nanchang, China
| | - Baoyu Chen
- Key Laboratory of Targeted Invention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Yuwen Zhu
- Key Laboratory of Targeted Invention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Tianyi Zhang
- Key Laboratory of Targeted Invention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Yibiao Yuan
- Key Laboratory of Targeted Invention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Xiaoling Zhang
- School of Medicine, Nanchang University, Nanchang, China.,Department of Gynecology, Jiangxi Provincial Maternal and Child Health Hospital, Nanchang, China
| | - Yong Xu
- Key Laboratory of Targeted Invention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China.,Institute of Biomedical Research, Liaocheng University, Liaocheng, China
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13
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Sun P, Lu Q, Li Z, Qin N, Jiang Y, Ma H, Jin G, Yu H, Dai J. Assessment of prognostic prediction models for gastric cancer using genomic and transcriptomic profiles. Meta Gene 2021. [DOI: 10.1016/j.mgene.2021.100890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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14
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Liu L, Zhao Q, Lin L, Yang G, Yu L, Zhuo L, Yang Y, Xu Y. Myeloid MKL1 Disseminates Cues to Promote Cardiac Hypertrophy in Mice. Front Cell Dev Biol 2021; 9:583492. [PMID: 33898415 PMCID: PMC8063155 DOI: 10.3389/fcell.2021.583492] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 01/04/2021] [Indexed: 12/11/2022] Open
Abstract
Cardiac hypertrophy is a key pathophysiological process in the heart in response to stress cues. Although taking place in cardiomyocytes, the hypertrophic response is influenced by other cell types, both within the heart and derived from circulation. In the present study we investigated the myeloid-specific role of megakaryocytic leukemia 1 (MKL1) in cardiac hypertrophy. Following transverse aortic constriction (TAC), myeloid MKL1 conditional knockout (MFCKO) mice exhibit an attenuated phenotype of cardiac hypertrophy compared to the WT mice. In accordance, the MFCKO mice were protected from excessive cardiac inflammation and fibrosis as opposed to the WT mice. Conditioned media collected from macrophages enhanced the pro-hypertrophic response in cardiomyocytes exposed to endothelin in an MKL1-dependent manner. Of interest, expression levels of macrophage derived miR-155, known to promote cardiac hypertrophy, were down-regulated in the MFCKO mice compared to the WT mice. MKL1 depletion or inhibition repressed miR-155 expression in macrophages. Mechanistically, MKL1 interacted with NF-κB to activate miR-155 transcription in macrophages. In conclusion, our data suggest that MKL1 may contribute to pathological hypertrophy via regulating macrophage-derived miR-155 transcription.
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Affiliation(s)
- Li Liu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China.,Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Qianwen Zhao
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Lin Lin
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Guang Yang
- Department of Pathology, Suzhou Municipal Hospital Affiliated with Nanjing Medical University, Suzhou, China
| | - Liming Yu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Lili Zhuo
- Department of Geriatrics, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yuyu Yang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China.,Institute of Biomedical Research, Liaocheng University, Liaocheng, China
| | - Yong Xu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China.,Institute of Biomedical Research, Liaocheng University, Liaocheng, China
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15
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Wang Y, Min P, Qi C, Zhao S, Yu M, Zhang Y, Du J. MICAL2 Facilitates Gastric Cancer Cell Migration via MRTF-A-Mediated CDC42 Activation. Front Mol Biosci 2021; 8:568868. [PMID: 33842533 PMCID: PMC8024553 DOI: 10.3389/fmolb.2021.568868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 02/23/2021] [Indexed: 11/13/2022] Open
Abstract
Aims and Hypothesis: Cell migration is driven by the reorganization of the actin cytoskeleton. Although MICAL2 is known to mediate the oxidation of actin filaments to regulate F-actin dynamics, relatively few studies have investigated the potential role of MICAL2 during cancer cell migration. Methods: The migratory ability of gastric cancer cells was measured by wound healing and transwell assays. The relationship between MICAL2 expression and MRTF-A nuclear localization was analyzed using gene overexpression and knockdown strategies. The production of reactive oxygen species (ROS) was evaluated by DCFH-DA staining. mRNA and protein levels of MMP9 were measured using qPCR and immunoblotting analysis. The activities of CDC42 and RhoA were assessed using pulldown assays. Results: Depletion of MICAL2 markedly reduced gastric cancer cell migration. Mechanistically, silencing of MICAL2 inhibited the nuclear translocation of MRTF-A in response to EGF and serum stimulation, whereas the contents of MRTF-A remained unchanged. Further analysis showed that silencing of MICAL2 decreased the activation of CDC42 as well as mRNA and protein levels of MMP9. Ectopic expression of MICAL2 augmented MRTF-A levels in the nucleus, and promoted the activation of CDC42, MMP9 expression, and gastric cancer cell migration. Moreover, silencing of MRTF-A inhibited the CDC42 activation induced by overexpression of MICAL2. In addition, MICAL2-induced ROS generation contributed to the effect exerted by MICAL2 on MRTF-A nuclear translocation. Conclusion: Together, these results provide evidence that MICAL2 facilitates gastric cancer cell migration via positive regulation of nuclear translocation of MRTF-A and subsequent CDC42 activation and MMP9 expression.
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Affiliation(s)
- Yueyuan Wang
- Department of Physiology, Nanjing Medical University, Nanjing, China.,The Laboratory Center for Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Pengxiang Min
- Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Chenxiang Qi
- Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Shuo Zhao
- Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Minjie Yu
- The First Clinical Medical College, Nanjing Medical University, Nanjing, China
| | - Yujie Zhang
- Department of Physiology, Nanjing Medical University, Nanjing, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - Jun Du
- Department of Physiology, Nanjing Medical University, Nanjing, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
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Reed F, Larsuel ST, Mayday MY, Scanlon V, Krause DS. MRTFA: A critical protein in normal and malignant hematopoiesis and beyond. J Biol Chem 2021; 296:100543. [PMID: 33722605 PMCID: PMC8079280 DOI: 10.1016/j.jbc.2021.100543] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 03/11/2021] [Accepted: 03/12/2021] [Indexed: 12/03/2022] Open
Abstract
Myocardin-related transcription factor A (MRTFA) is a coactivator of serum response factor, a transcription factor that participates in several critical cellular functions including cell growth and apoptosis. MRTFA couples transcriptional regulation to actin cytoskeleton dynamics, and the transcriptional targets of the MRTFA–serum response factor complex include genes encoding cytoskeletal proteins as well as immediate early genes. Previous work has shown that MRTFA promotes the differentiation of many cell types, including various types of muscle cells and hematopoietic cells, and MRTFA's interactions with other protein partners broaden its cellular roles. However, despite being first identified as part of the recurrent t(1;22) chromosomal translocation in acute megakaryoblastic leukemia, the mechanisms by which MRTFA functions in malignant hematopoiesis have yet to be defined. In this review, we provide an in-depth examination of the structure, regulation, and known functions of MRTFA with a focus on hematopoiesis. We conclude by identifying areas of study that merit further investigation.
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Affiliation(s)
- Fiona Reed
- Department of Laboratory Medicine, Yale School of Medicine, New Haven, Connecticut, USA; Yale Stem Cell Center, Yale School of Medicine, New Haven, Connecticut, USA
| | - Shannon T Larsuel
- Department of Laboratory Medicine, Yale School of Medicine, New Haven, Connecticut, USA; Yale Stem Cell Center, Yale School of Medicine, New Haven, Connecticut, USA
| | - Madeline Y Mayday
- Yale Stem Cell Center, Yale School of Medicine, New Haven, Connecticut, USA; Department of Pathology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Vanessa Scanlon
- Department of Laboratory Medicine, Yale School of Medicine, New Haven, Connecticut, USA; Yale Stem Cell Center, Yale School of Medicine, New Haven, Connecticut, USA
| | - Diane S Krause
- Department of Laboratory Medicine, Yale School of Medicine, New Haven, Connecticut, USA; Yale Stem Cell Center, Yale School of Medicine, New Haven, Connecticut, USA; Department of Pathology, Yale School of Medicine, New Haven, Connecticut, USA.
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MKL1-induced lncRNA SNHG18 drives the growth and metastasis of non-small cell lung cancer via the miR-211-5p/BRD4 axis. Cell Death Dis 2021; 12:128. [PMID: 33500406 PMCID: PMC7838315 DOI: 10.1038/s41419-021-03399-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 12/31/2020] [Accepted: 01/04/2021] [Indexed: 12/12/2022]
Abstract
Megakaryocytic leukemia 1 (MKL1) is a key transcription factor involved in non-small cell lung cancer (NSCLC) growth and metastasis. Yet, its downstream target genes, especially long non-coding RNA (lncRNA) targets, are poorly investigated. In this study, we employed lncRNA array technology to identify differentially expressed lncRNAs in NSCLC cells with or without overexpression of MKL1. Candidate lncRNAs were further explored for their clinical significance and function in NSCLC. The results showed that MKL1 promoted the expression of lncRNA SNHG18 in NSCLC cells. SNHG18 upregulation in NSCLC specimens correlated with lymph node metastasis and reduced overall survival of NSCLC patients. SNHG18 expression served as an independent prognostic factor for NSCLC. Knockdown of SNHG18 blocked MKL1-induced growth and invasion of NSCLC cells in vitro. Animal studies validated the requirement for SNHG18 in NSCLC growth and metastasis. Moreover, overexpression of SNHG18 promoted NSCLC cell proliferation and invasion. Mechanically, SNHG18 exerted its prometastatic effects on NSCLC cells through repression of miR-211-5p and induction of BRD4. Clinical evidence indicated that SNHG18 expression was negatively correlated with miR-211-5p expression in NSCLC tissues. Altogether, SNHG18 acts as a lncRNA mediator of MKL1 in NSCLC. SNHG18 facilitates NSCLC growth and metastasis by modulating the miR-211-5p/BRD4 axis. Therefore, SNHG18 may be a potential therapeutic target for the treatment of NSCLC.
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18
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Veerasubramanian PK, Trinh A, Akhtar N, Liu WF, Downing TL. Biophysical and epigenetic regulation of cancer stemness, invasiveness and immune action. CURRENT TISSUE MICROENVIRONMENT REPORTS 2020; 1:277-300. [PMID: 33817661 PMCID: PMC8015331 DOI: 10.1007/s43152-020-00021-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/14/2020] [Indexed: 02/08/2023]
Abstract
PURPOSE OF REVIEW The tumor microenvironment (TME) is an amalgam of multiple dysregulated biophysical cues that can alter cellular behavior through mechanotransductive signaling and epigenetic modifications. Through this review, we seek to characterize the extent of biophysical and epigenetic regulation of cancer stemness and tumor-associated immune cells in order to identify ideal targets for cancer therapy. RECENT FINDINGS Recent studies have identified cancer stemness and immune action as significant contributors to neoplastic disease, due to their susceptibility to microenvironmental influences. Matrix stiffening, altered vasculature, and resultant hypoxia within the TME can influence cancer stem cell (CSC) and immune cell behavior, as well as alter the epigenetic landscapes involved in cancer development. SUMMARY This review highlights the importance of aberrant biophysical cues in driving cancer progression through altered behavior of CSCs and immune cells, which in turn sustains further biophysical dysregulation. We examine current and potential therapeutic approaches that break this self-sustaining cycle of disease progression by targeting the presented biophysical and epigenetic signatures of cancer. We also summarize strategies including the normalization of the TME, targeted drug delivery, and inhibition of cancer-enabling epigenetic players.
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Affiliation(s)
- Praveen Krishna Veerasubramanian
- Department of Biomedical Engineering, University of California-Irvine, Irvine, CA, USA
- The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California-Irvine, Irvine, CA, USA
| | - Annie Trinh
- The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California-Irvine, Irvine, CA, USA
- Department of Microbiology and Molecular Genetics, University of California-Irvine, Irvine, CA, USA
| | - Navied Akhtar
- Department of Biomedical Engineering, University of California-Irvine, Irvine, CA, USA
- The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California-Irvine, Irvine, CA, USA
| | - Wendy F. Liu
- Department of Biomedical Engineering, University of California-Irvine, Irvine, CA, USA
- The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California-Irvine, Irvine, CA, USA
- Department of Chemical and Biomolecular Engineering, University of California-Irvine, Irvine, CA, USA
| | - Timothy L. Downing
- Department of Biomedical Engineering, University of California-Irvine, Irvine, CA, USA
- The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California-Irvine, Irvine, CA, USA
- Department of Microbiology and Molecular Genetics, University of California-Irvine, Irvine, CA, USA
- NSF-Simons Center for Multiscale Cell Fate Research, University of California-Irvine, Irvine, CA, USA
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Wei W, Li D, Cai X, Liu Z, Bai Z, Xiao J. Highly specific recognition of denatured collagen by fluorescent peptide probes with the repetitive Gly-Pro-Pro and Gly-Hyp-Hyp sequences. J Mater Chem B 2020; 8:10093-10100. [PMID: 32935727 DOI: 10.1039/d0tb01691h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Denatured collagen is a key biomarker for various critical diseases such as cancer. Peptide probes with the repetitive (Gly-Pro-Hyp)n sequences have recently been found to selectively target denatured collagen; however, thermal or UV pretreatment is required to drive the peptides into the monomer conformation, which poses a substantial challenge for clinical applications. We herein construct two peptide probes, FAM-GOO and FAM-GPP, consisting of the repetitive (Gly-Hyp-Hyp)8 and (Gly-Pro-Pro)8 sequences, respectively. The CD, fluorescence and colorimetric studies have consistently revealed that FAM-GOO showed strong capability of forming the triple helical structure, while FAM-GPP pronouncedly displayed the single stranded conformation at temperatures as low as 4 °C. The binding experiments have indicated that both peptide probes could recognize denatured collagen with high specificity, and FAM-GPP remarkably did not need the preheating treatment. The tissue staining results have shown that preheated FAM-GOO and unheated FAM-GPP could target denatured collagen in a wide variety of rat frozen and human FFPE tissue sections. Compared with antibodies specific for a certain type of collagen, both FAM-GOO and FAM-GPP act as broad-spectrum probes for the selective detection of denatured collagen of different types and from different species. Importantly, FAM-GPP possessed the unique capability of maintaining the monomer conformation by itself, thus avoiding the potential risks of the thermal or UV pretreatment. This novel peptide probe provides a handy and versatile biosensor for specifically targeting denatured collagen, which has attractive potential in the diagnosis and therapeutics of collagen-involved diseases.
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Affiliation(s)
- Wenyu Wei
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
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20
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Epigenetic activation of the small GTPase TCL contributes to colorectal cancer cell migration and invasion. Oncogenesis 2020; 9:86. [PMID: 32999272 PMCID: PMC7528090 DOI: 10.1038/s41389-020-00269-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 08/21/2020] [Accepted: 09/10/2020] [Indexed: 01/25/2023] Open
Abstract
TC10-like (TCL) is a small GTPase that has been implicated in carcinogenesis. Elevated TCL expression has been observed in many different types of cancers although the underlying epigenetic mechanism is poorly understood. Here we report that TCL up-regulation was associated with high malignancy in both human colorectal cancer biopsy specimens and in cultured colorectal cancer cells. Hypoxia, a pro-metastatic stimulus, up-regulated TCL expression in HT-29 cells. Further studies revealed that myocardin-related transcription factor A (MRTF-A) promoted migration and invasion of HT-29 cells in a TCL-dependent manner. MRTF-A directly bound to the proximal TCL promoter in response to hypoxia to activate TCL transcription. Chromatin immunoprecipitation (ChIP) assay showed that hypoxia stimulation specifically enhanced acetylation of histone H4K16 surrounding the TCL promoter, which was abolished by MRTF-A depletion or inhibition. Mechanistically, MRTF-A interacted with and recruited the H4K16 acetyltransferase hMOF to the TCL promoter to cooperatively regulate TCL transcription. hMOF depletion or inhibition attenuated hypoxia-induced TCL expression and migration/invasion of HT-29 cells. In conclusion, our data identify a novel MRTF-A-hMOF-TCL axis that contributes to colorectal cancer metastasis.
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21
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Chen B, Yuan Y, Sun L, Chen J, Yang M, Yin Y, Xu Y. MKL1 Mediates TGF-β Induced RhoJ Transcription to Promote Breast Cancer Cell Migration and Invasion. Front Cell Dev Biol 2020; 8:832. [PMID: 32984327 PMCID: PMC7478007 DOI: 10.3389/fcell.2020.00832] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 08/04/2020] [Indexed: 12/24/2022] Open
Abstract
Differential regulation of gene transcription contributes to cancer metastasis. We investigated the involvement of a Rho GTPase (RhoJ) in breast cancer metastasis focusing on the mechanism underlying RhoJ trans-activation by pro-metastatic cues. We report that expression of RhoJ was up-regulated in malignant breast cancer cells compared to more benign ones. Higher RhoJ expression was also detected in human breast cancer biopsy specimens of advanced stages. RhoJ depletion attenuated breast cancer cell migration and invasion in vitro and metastasis in vivo. The pro-metastatic stimulus TGF-β activated RhoJ via megakaryocytic leukemia 1 (MKL1). MKL1 interacted with and was recruited by ETS-related gene 1 (ERG1) to the RhoJ promoter to activate transcription. In conclusion, our data delineate a novel transcriptional pathway that contributes to breast cancer metastasis. Targeting the ERG1-MKL1-RhoJ axis may be considered as a reasonable approach to treat malignant breast cancer.
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Affiliation(s)
- Baoyu Chen
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysioloy and Laboratory Center for Experimental Medicine, Nanjing Medical University, Nanjing, China
| | - Yibiao Yuan
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysioloy and Laboratory Center for Experimental Medicine, Nanjing Medical University, Nanjing, China
| | - Lina Sun
- Department of Pathology and Pathophysiology, College of Life and Basic Medical Sciences, Soochow University, Suzhou, China.,Institute of Biomedical Research, Liaocheng University, Liaocheng, China
| | - Junliang Chen
- Department of Pathophysiology, Wuxi Medical School, Jiangnan University, Wuxi, China
| | - Mengzhu Yang
- Department of Oncology, First Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Yongmei Yin
- Department of Oncology, First Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Yong Xu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysioloy and Laboratory Center for Experimental Medicine, Nanjing Medical University, Nanjing, China.,Institute of Biomedical Research, Liaocheng University, Liaocheng, China
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22
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Zhang Y, Bewerunge-Hudler M, Schick M, Burwinkel B, Herpel E, Hoffmeister M, Brenner H. Blood-derived DNA methylation predictors of mortality discriminate tumor and healthy tissue in multiple organs. Mol Oncol 2020; 14:2111-2123. [PMID: 32506842 PMCID: PMC7463320 DOI: 10.1002/1878-0261.12738] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 05/14/2020] [Accepted: 06/02/2020] [Indexed: 12/27/2022] Open
Abstract
Evidence has shown that certain methylation markers derived from blood can mirror corresponding methylation signatures in internal tissues. In the current study, we aimed to investigate two strong epigenetic predictors for life span, derived from blood DNA methylation data, in tissue samples of solid cancer patients. Using data from the Cancer Genome Atlas (TCGA) and the German DACHS study, we compared a mortality risk score (MRscore) and DNAmPhenoAge in paired tumor and adjacent normal tissue samples of patients with lung (N = 69), colorectal (n = 299), breast (n = 90), head/neck (n = 50), prostate (n = 50), and liver (n = 50) cancer. To explore the concordance across tissue and blood, we additionally assessed the two markers in blood samples of colorectal cancer (CRC) cases and matched controls (n = 93) in the DACHS+ study. The MRscore was significantly elevated in tumor tissues compared to normal tissues of all cancers except prostate cancer, for which an opposite pattern was observed. DNAmPhenoAge was consistently higher in all tumor tissues. The MRscore discriminated lung, colorectal, and prostate tumor tissues from normal tissues with very high accuracy [AUCs of 0.87, 0.99 (TCGA) /0.94 (DACHS), and 0.92, respectively]. DNAmPhenoAge accurately discriminated five types of tumor tissues from normal tissues (except prostate cancer), with AUCs of 0.82–0.93. The MRscore was also significantly higher in blood samples of CRC cases than in controls, with areas under the curve (AUC) of 0.74, whereas DNAmPhenoAge did not distinguish cases from controls, with AUC of 0.54. This study provides compelling evidence that blood‐derived DNAm markers could reflect methylation changes in less accessible tissues. Further research should explore the potential use of these findings for cancer diagnosis and early detection.
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Affiliation(s)
- Yan Zhang
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany.,German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Melanie Bewerunge-Hudler
- Genomics and Proteomics Core Facilities, Microarray Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Matthias Schick
- Genomics and Proteomics Core Facilities, Microarray Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Barbara Burwinkel
- Molecular Epidemiology, German Cancer Research Center, Heidelberg, Germany.,Molecular Biology of Breast Cancer, Department of Obstetrics and Gynecology, University of Heidelberg, Heidelberg, Germany
| | - Esther Herpel
- Department of General Pathology, Institute of Pathology, University of Heidelberg, Heidelberg, Germany.,NCT Tissue Bank, National Center for Tumor Diseases (NCT), Heidelberg, Germany
| | - Michael Hoffmeister
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany.,German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), Heidelberg, Germany
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23
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Yang Y, Yang G, Yu L, Lin L, Liu L, Fang M, Xu Y. An Interplay Between MRTF-A and the Histone Acetyltransferase TIP60 Mediates Hypoxia-Reoxygenation Induced iNOS Transcription in Macrophages. Front Cell Dev Biol 2020; 8:484. [PMID: 32626711 PMCID: PMC7315810 DOI: 10.3389/fcell.2020.00484] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 05/22/2020] [Indexed: 01/23/2023] Open
Abstract
Cardiac ischemia-reperfusion injury (IRI) represents a major pathophysiological event associated with permanent loss of heart function. Several inter-dependent processes contribute to cardiac IRI that include accumulation of reactive oxygen species (ROS), aberrant inflammatory response, and depletion of energy supply. Inducible nitric oxide synthase (iNOS) is a pro-inflammatory mediator and a major catalyst of ROS generation. In the present study we investigated the epigenetic mechanism whereby iNOS transcription is up-regulated in macrophages in the context of cardiac IRI. We report that germline deletion or systemic inhibition of myocardin-related transcription factor A (MRTF-A) in mice attenuated up-regulation of iNOS following cardiac IRI in the heart. In cultured macrophages, depletion or inhibition of MRTF-A suppressed iNOS induction by hypoxia-reoxygenation (HR). In contrast, MRTF-A over-expression potentiated activation of the iNOS promoter by HR. MRTF-A directly binds to the iNOS promoter in response to HR stimulation. MRTF-A binding to the iNOS promoter was synonymous with active histone modifications including trimethylated H3K4, acetylated H3K9, H3K27, and H4K16. Further analysis revealed that MRTF-A interacted with H4K16 acetyltransferase TIP60 to synergistically activate iNOS transcription. TIP60 depletion or inhibition achieved equivalent effects as MRTF-A depletion/inhibition in terms of iNOS repression. Of interest, TIP60 appeared to form a crosstalk with the H3K4 trimethyltransferase complex to promote iNOS trans-activation. In conclusion, we data suggest that the MRTF-A-TIP60 axis may play a critical role in iNOS transcription in macrophages and as such be considered as a potential target for the intervention of cardiac IRI.
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Affiliation(s)
- Yuyu Yang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China.,Institute of Biomedical Research, Liaocheng University, Liaocheng, China.,Key Laboratory of Emergency and Trauma of Ministry of Education, Institute of Cardiovascular Research of the First Affiliated Hospital, Hainan Medical University, Haikou, China
| | - Guang Yang
- Department of Pathology, Soochow Municipal Hospital Affiliated with Nanjing Medical University, Soochow, China
| | - Liming Yu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Disease, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Ling Lin
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Li Liu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Disease, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Mingming Fang
- Center for Experimental Medicine, Jiangsu Health Vocational College, Nanjing, China.,Institute of Biomedical Research, Liaocheng University, Liaocheng, China
| | - Yong Xu
- Institute of Biomedical Research, Liaocheng University, Liaocheng, China.,Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Disease, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
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24
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Transforming a toxic drug into an efficacious nanomedicine using a lipoprodrug strategy for the treatment of patient-derived melanoma xenografts. J Control Release 2020; 324:289-302. [PMID: 32442582 DOI: 10.1016/j.jconrel.2020.05.025] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 05/13/2020] [Accepted: 05/16/2020] [Indexed: 12/19/2022]
Abstract
Despite the progress made with the recent clinical use of the anticancer compound cabazitaxel, the efficacy in patients remains unsatisfactory, largely due to the high in vivo toxicity of the agent. Therefore, strategies that achieve favorable outcomes and good safety profiles will greatly expand the repertoire of this potent agent. Here, we propose a combinatorial strategy to reform the cabazitaxel agent and the use of sequential supramolecular nanoassembly with liposomal compositions to assemble a prodrug-formulated liposome, termed lipoprodrug, for safe and effective drug delivery. Reconstructing cabazitaxel with a polyunsaturated fatty acid (i.e., docosahexaenoic acid) via a hydrolyzable ester bond confers the generated prodrug with the ability to be readily integrated into the lipid bilayer of liposomes for systemic administration. The resulting lipoprodrug scaffold showed significantly sustained drug release profiles and improved pharmacokinetics in rats as well as a reduction in systemic toxicity in vivo. Notably, the lipoprodrug outperformed free cabazitaxel in terms of in vivo therapeutic efficacy in multiple separate tumor xenograft-bearing mouse models, one of which was a patient-derived xenograft model. Surprisingly, the lipoprodrug was able to reduce tumor invasiveness and reprogram the tumor immunosuppressive microenvironment by proinflammatory macrophage polarization. Our findings validate this lipoprodrug approach as a simple yet effective strategy for transforming the highly toxic cabazitaxel agent into an efficacious nanomedicine with excellent in vivo tolerability. This approach could also be applied to rescue other drugs or drug candidates that have failed in clinical trials due to poor pharmacokinetic properties or unacceptable toxicity in patients.
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25
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Tang J, Zou J, Zhang X, Fan M, Tian Q, Fu S, Gao S, Fan S. PretiMeth: precise prediction models for DNA methylation based on single methylation mark. BMC Genomics 2020; 21:364. [PMID: 32414326 PMCID: PMC7227319 DOI: 10.1186/s12864-020-6768-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 05/04/2020] [Indexed: 11/29/2022] Open
Abstract
Background The computational prediction of methylation levels at single CpG resolution is promising to explore the methylation levels of CpGs uncovered by existing array techniques, especially for the 450 K beadchip array data with huge reserves. General prediction models concentrate on improving the overall prediction accuracy for the bulk of CpG loci while neglecting whether each locus is precisely predicted. This leads to the limited application of the prediction results, especially when performing downstream analysis with high precision requirements. Results Here we reported PretiMeth, a method for constructing precise prediction models for each single CpG locus. PretiMeth used a logistic regression algorithm to build a prediction model for each interested locus. Only one DNA methylation feature that shared the most similar methylation pattern with the CpG locus to be predicted was applied in the model. We found that PretiMeth outperformed other algorithms in the prediction accuracy, and kept robust across platforms and cell types. Furthermore, PretiMeth was applied to The Cancer Genome Atlas data (TCGA), the intensive analysis based on precise prediction results showed that several CpG loci and genes (differentially methylated between the tumor and normal samples) were worthy for further biological validation. Conclusion The precise prediction of single CpG locus is important for both methylation array data expansion and downstream analysis of prediction results. PretiMeth achieved precise modeling for each CpG locus by using only one significant feature, which also suggested that our precise prediction models could be probably used for reference in the probe set design when the DNA methylation beadchip update. PretiMeth is provided as an open source tool via https://github.com/JxTang-bioinformatics/PretiMeth.
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Affiliation(s)
- Jianxiong Tang
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Jianxiao Zou
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Xiaoran Zhang
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China.,Department of Automation, Tsinghua University, Beijing, 100084, China
| | - Mei Fan
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Qi Tian
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Shuyao Fu
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Shihong Gao
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Shicai Fan
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China. .,Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu, 611731, China.
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26
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The pan-cancer landscape of netrin family reveals potential oncogenic biomarkers. Sci Rep 2020; 10:5224. [PMID: 32251318 PMCID: PMC7090012 DOI: 10.1038/s41598-020-62117-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 03/09/2020] [Indexed: 02/02/2023] Open
Abstract
Recent cancer studies have found that the netrin family of proteins plays vital roles in the development of some cancers. However, the functions of the many variants of these proteins in cancer remain incompletely understood. In this work, we used the most comprehensive database available, including more than 10000 samples across more than 30 tumor types, to analyze the six members of the netrin family. We performed comprehensive analysis of genetic change and expression of the netrin genes and analyzed epigenetic and pathway relationships, as well as the correlation of expression of these proteins with drug sensitivity. Although the mutation rate of the netrin family is low in pan-cancer, among the tumor patients with netrin mutations, the highest number are Uterine Corpus Endometrial Carcinoma patients, accounting for 13.6% of cases (54 of 397). Interestingly, the highest mutation rate of a netrin family member is 38% for NTNG1 (152 of 397). Netrin proteins may participate in the development of endocrine-related tumors and sex hormone-targeting organ tumors. Additionally, the participation of NTNG1 and NTNG2 in various cancers shows their potential for use as new tumor markers and therapeutic targets. This analysis provides a broad molecular perspective of this protein family and suggests some new directions for the treatment of cancer.
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27
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Song G, Guo G, Du T, Li X, Wang J, Yan Y, Zhao Y. RALY may cause an aggressive biological behavior and a dismal prognosis in non-small-cell lung cancer. Exp Cell Res 2020; 389:111884. [PMID: 32014444 DOI: 10.1016/j.yexcr.2020.111884] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 01/20/2020] [Accepted: 01/31/2020] [Indexed: 12/27/2022]
Abstract
RALY is a member of the heterogeneous nuclear ribonucleoprotein (hnRNP), an RNA-binding protein that plays a role in mRNA splicing and metabolism, may be involved in tumorigenesis and development. Some studies have shown that RALY plays a role in promoting cancer in a variety of tumors. However, the biological function and molecular mechanism of RALY in non-small cell lung cancer (NSCLC) remain unknown. TCGA databases were used to gather RALY expression data in NSCLC, the results indicate that RALY is highly expressed in cancer tissue of NSCLC patients. Then we demonstrated that RALY gene expression was notably upregulated in NSCLC tissue and cell lines (A549 and SK-MES-1), and was associated with lymph node metastasis (P = 0.007) and poorer overall survival in NSCLC patients. Subsequently, RALY in A549 and SK-MES-1 cells was knocked down by lentivirus to analyze the consequences of RALY on the biological behavior of NSCLC cell lines. Our results indicated that RALY knockdown impaired NSCLC cells proliferation, migration, and invasion, as well as arrested cells in G1 phase, and the reintroduction of RALY recused its biological phenotype. Furthermore, RALY knockdown down-regulated the expression levels of c-Myc, Cyclin D1, CDK4, MMP9, Rho A ,Rho C, N-cadherin and β-catenin, and up-regulated the expression levels of P27, Rho B and E-cadherin. Therefore, targeting RALY could be a promising molecular target for NSCLC treatment.
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Affiliation(s)
- Guanchu Song
- Department of Radiation Oncology, Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, Liaoning province, China
| | - Genyan Guo
- Department of Radiation Oncology, Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, Liaoning province, China
| | - Tianqi Du
- Department of Radiation Oncology, Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, Liaoning province, China
| | - Xiang Li
- Department of Radiation Oncology, Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, Liaoning province, China
| | - Jie Wang
- Department of Radiation Oncology, Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, Liaoning province, China
| | - Ying Yan
- Department of Radiation Oncology, Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, Liaoning province, China; Department of Radiation Oncology, General Hospital of the Northern War Zone of the Chinese People's Liberation Army, Shenyang, 110016, Liaoning province, China.
| | - Yuxia Zhao
- Department of Radiation Oncology, Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, Liaoning province, China.
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Bone marrow niche-derived extracellular matrix-degrading enzymes influence the progression of B-cell acute lymphoblastic leukemia. Leukemia 2020; 34:1540-1552. [PMID: 31919471 PMCID: PMC7266746 DOI: 10.1038/s41375-019-0674-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 11/16/2019] [Accepted: 11/20/2019] [Indexed: 12/11/2022]
Abstract
Specific and reciprocal interactions with the bone marrow microenvironment (BMM) govern the course of hematological malignancies. Matrix metalloproteinase-9 (MMP-9), secreted by leukemia cells, facilitates tumor progression via remodeling of the extracellular matrix (ECM) of the BMM. Hypothesizing that leukemias may instruct the BMM to degrade the ECM, we show, that MMP-9-deficiency in the BMM prolongs survival of mice with BCR-ABL1-induced B-cell acute lymphoblastic leukemia (B-ALL) compared with controls and reduces leukemia-initiating cells. MMP-9-deficiency in the BMM leads to reduced degradation of proteins of the ECM and reduced invasion of B-ALL. Using various in vivo and in vitro assays, as well as recipient mice deficient for the receptor for tumor necrosis factor (TNF) α (TNFR1) we demonstrate that B-ALL cells induce MMP-9-expression in mesenchymal stem cells (MSC) and possibly other cells of the BMM via a release of TNFα. MMP-9-expression in MSC is mediated by activation of nuclear factor kappa B (NF-κB) downstream of TNFR1. Consistently, knockdown of TNF-α in B-ALL-initiating cells or pharmacological inhibition of MMP-9 led to significant prolongation of survival in mice with B-ALL. In summary, leukemia cell-derived Tnfα induced MMP-9-expression by the BMM promoting B-ALL progression. Inhibition of MMP-9 may act as an adjunct to existing therapies.
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Li Z, Xia J, Fang M, Xu Y. Epigenetic regulation of lung cancer cell proliferation and migration by the chromatin remodeling protein BRG1. Oncogenesis 2019; 8:66. [PMID: 31695026 PMCID: PMC6834663 DOI: 10.1038/s41389-019-0174-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 10/14/2019] [Accepted: 10/15/2019] [Indexed: 01/10/2023] Open
Abstract
Malignant lung cancer cells are characterized by uncontrolled proliferation and migration. Aberrant lung cancer cell proliferation and migration are programmed by altered cancer transcriptome. The underlying epigenetic mechanism is unclear. Here we report that expression levels of BRG1, a chromatin remodeling protein, were significantly up-regulated in human lung cancer biopsy specimens of higher malignancy grades compared to those of lower grades. Small interfering RNA mediated depletion or pharmaceutical inhibition of BRG1 suppressed proliferation and migration of lung cancer cells. BRG1 depletion or inhibition was paralleled by down-regulation of cyclin B1 (CCNB1) and latent TGF-β binding protein 2 (LTBP2) in lung cancer cells. Further analysis revealed that BRG1 directly bound to the CCNB1 promoter to activate transcription in response to hypoxia stimulation by interacting with E2F1. On the other hand, BRG1 interacted with Sp1 to activate LTBP2 transcription. Mechanistically, BRG1 regulated CCNB1 and LTBP2 transcription by altering histone modifications on target promoters. Specifically, BRG1 recruited KDM3A, a histone H3K9 demethylase, to remove dimethyl H3K9 from target gene promoters thereby activating transcription. KDM3A knockdown achieved equivalent effects as BRG1 silencing by diminishing lung cancer proliferation and migration. Of interest, BRG1 directly activated KDM3A transcription by forming a complex with HIF-1α. In conclusion, our data unveil a novel epigenetic mechanism whereby malignant lung cancer cells acquired heightened ability to proliferate and migrate. Targeting BRG1 may yield effective interventional strategies against malignant lung cancers.
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Affiliation(s)
- Zilong Li
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Jun Xia
- Department of Respiratory Medicine, The Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, China.
| | - Mingming Fang
- Department of Clinical Medicine and Laboratory Center for Experimental Medicine, Jiangsu Health Vocational College, Nanjing, China.,Institute of Biomedical Research, Liaocheng University, Liaocheng, China
| | - Yong Xu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China. .,Institute of Biomedical Research, Liaocheng University, Liaocheng, China.
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30
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Record J, Sendel A, Kritikou JS, Kuznetsov NV, Brauner H, He M, Nagy N, Oliveira MMS, Griseti E, Haase CB, Dahlström J, Boddul S, Wermeling F, Thrasher AJ, Liu C, Andersson J, Claesson HE, Winqvist O, Burns SO, Björkholm M, Westerberg LS. An intronic deletion in megakaryoblastic leukemia 1 is associated with hyperproliferation of B cells in triplets with Hodgkin lymphoma. Haematologica 2019; 105:1339-1350. [PMID: 31582539 PMCID: PMC7193474 DOI: 10.3324/haematol.2019.216317] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 09/26/2019] [Indexed: 11/09/2022] Open
Abstract
Megakaryoblastic leukemia 1 (MKL1) is a coactivator of serum response factor and together they regulate transcription of actin cytoskeleton genes. MKL1 is associated with hematologic malignancies and immunodeficiency, but its role in B cells is unexplored. Here we examined B cells from monozygotic triplets with an intronic deletion in MKL1, two of whom had been previously treated for Hodgkin lymphoma (HL). To investigate MKL1 and B-cell responses in the pathogenesis of HL, we generated Epstein-Barr virus-transformed lymphoblastoid cell lines from the triplets and two controls. While cells from the patients with treated HL had a phenotype close to that of the healthy controls, cells from the undiagnosed triplet had increased MKL1 mRNA, increased MKL1 protein, and elevated expression of MKL1-dependent genes. This profile was associated with elevated actin content, increased cell spreading, decreased expression of CD11a integrin molecules, and delayed aggregation. Moreover, cells from the undiagnosed triplet proliferated faster, displayed a higher proportion of cells with hyperploidy, and formed large tumors in vivo This phenotype was reversible by inhibiting MKL1 activity. Interestingly, cells from the triplet treated for HL in 1985 contained two subpopulations: one with high expression of CD11a that behaved like control cells and the other with low expression of CD11a that formed large tumors in vivo similar to cells from the undiagnosed triplet. This implies that pre-malignant cells had re-emerged a long time after treatment. Together, these data suggest that dysregulated MKL1 activity participates in B-cell transformation and the pathogenesis of HL.
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Affiliation(s)
- Julien Record
- Department of Microbiology, Tumor and Cell Biology, Biomedicum, Karolinska Institutet, Stockholm, Sweden
| | - Anton Sendel
- Department of Microbiology, Tumor and Cell Biology, Biomedicum, Karolinska Institutet, Stockholm, Sweden
| | - Joanna S Kritikou
- Department of Microbiology, Tumor and Cell Biology, Biomedicum, Karolinska Institutet, Stockholm, Sweden
| | - Nikolai V Kuznetsov
- Department of Microbiology, Tumor and Cell Biology, Biomedicum, Karolinska Institutet, Stockholm, Sweden
| | - Hanna Brauner
- Department of Microbiology, Tumor and Cell Biology, Biomedicum, Karolinska Institutet, Stockholm, Sweden
| | - Minghui He
- Department of Microbiology, Tumor and Cell Biology, Biomedicum, Karolinska Institutet, Stockholm, Sweden
| | - Noemi Nagy
- Department of Microbiology, Tumor and Cell Biology, Biomedicum, Karolinska Institutet, Stockholm, Sweden
| | - Mariana M S Oliveira
- Department of Microbiology, Tumor and Cell Biology, Biomedicum, Karolinska Institutet, Stockholm, Sweden
| | - Elena Griseti
- Department of Microbiology, Tumor and Cell Biology, Biomedicum, Karolinska Institutet, Stockholm, Sweden
| | - Christoph B Haase
- Department of Microbiology, Tumor and Cell Biology, Biomedicum, Karolinska Institutet, Stockholm, Sweden
| | - Jenny Dahlström
- Department of Medicine Solna, Karolinska University Hospital, Stockholm, Sweden
| | - Sanjaykumar Boddul
- Department of Medicine Solna, Karolinska University Hospital, Stockholm, Sweden
| | - Fredrik Wermeling
- Department of Medicine Solna, Karolinska University Hospital, Stockholm, Sweden
| | | | - Chaohong Liu
- Department of Pathogen Biology, School of Basic Medicine, Huazhong University of Science and Technology, Wuhan, China
| | - John Andersson
- Department of Microbiology, Tumor and Cell Biology, Biomedicum, Karolinska Institutet, Stockholm, Sweden.,Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Hans-Erik Claesson
- Department of Medicine Solna, Karolinska University Hospital, Stockholm, Sweden
| | - Ola Winqvist
- Department of Medicine Solna, Karolinska University Hospital, Stockholm, Sweden
| | - Siobhan O Burns
- Institute of Immunity and Transplantation, University College London, London, UK.,Department of Immunology, Royal Free London NHS Foundation Trust, London, UK
| | - Magnus Björkholm
- Department of Medicine Solna, Karolinska University Hospital, Stockholm, Sweden
| | - Lisa S Westerberg
- Department of Microbiology, Tumor and Cell Biology, Biomedicum, Karolinska Institutet, Stockholm, Sweden
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Cheng X, Xu S, Pan J, Zheng J, Wang X, Yu H, Bao J, Xu Y, Guan H, Zhang L. MKL1 overexpression predicts poor prognosis in patients with papillary thyroid cancer and promotes nodal metastasis. J Cell Sci 2019; 132:jcs.231399. [PMID: 31363007 DOI: 10.1242/jcs.231399] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 07/19/2019] [Indexed: 12/20/2022] Open
Abstract
Papillary thyroid cancer (PTC), the most common thyroid malignancy, has a strong propensity for cervical lymph node metastasis (LNM), which increases the risk of locoregional recurrence and decreases survival probability in some high-risk groups. Hence, there is a pressing requirement for a reliable biomarker to predict LNM in thyroid cancer. In the present study, MKL1 (also known as MRTFA) expression was significantly increased in PTC patients with LNM compared with those without. Further receiver operating characteristic (ROC) analysis showed that MKL1 expression had a diagnostic value in the differentiation of LNM in PTC. Furthermore, Kaplan-Meier analysis revealed that high MKL1 expression was associated with significantly decreased survival in PTC. Additionally, our study indicated that MKL1 promoted the migration and invasion of PTC cells. MKL1 interacted with and recruited Smad3 to the promoter of MMP2 to activate MMP2 transcription upon treatment with TGF-β. Moreover, there was significant correlation between expression of TGF-β, MKL1 and MMP2 in our clinical cohort of specimens from individuals with PTC. Our results suggest that the detection of MKL1 expression could be used to predict cervical LNM and inform post-operative follow-up in individuals with PTC.
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Affiliation(s)
- Xian Cheng
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, Jiangsu, China
| | - Shichen Xu
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, Jiangsu, China
| | - Jie Pan
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, Jiangsu, China.,State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214000, Jiangsu, China
| | - Jiangxia Zheng
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, Jiangsu, China.,State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214000, Jiangsu, China
| | - Xiaowen Wang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, Jiangsu, China.,State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214000, Jiangsu, China
| | - Huixin Yu
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, Jiangsu, China
| | - Jiandong Bao
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, Jiangsu, China
| | - Yong Xu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing 211100, China
| | - Haixia Guan
- Department of Endocrinology & Metabolism and Institute of Endocrinology, the First Hospital of China Medical University, Shenyang, Liaoning 110000, China
| | - Li Zhang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, Jiangsu, China
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32
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Matrine suppresses lung metastasis of human hepatocellular carcinoma by directly targeting matrix metalloproteinase-9. Biochem Biophys Res Commun 2019; 515:57-63. [DOI: 10.1016/j.bbrc.2019.04.063] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 04/09/2019] [Indexed: 12/17/2022]
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33
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Xu W, Zhao Q, Wu M, Fang M, Xu Y. MKL1 mediates TNF-α induced pro-inflammatory transcription by bridging the crosstalk between BRG1 and WDR5. J Biomed Res 2019; 33:164-172. [PMID: 29109331 PMCID: PMC6551423 DOI: 10.7555/jbr.32.20170025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Tumor necrosis factor alpha (TNF-α) is a cytokine that can potently stimulate the synthesis of a range of pro-inflammatory mediators in macrophages. The underlying epigenetic mechanism, however, is underexplored. Here we report that the transcriptional modulator megakaryocytic leukemia 1 (MKL1) is associated with a histone H3K4 methyltransferase activity. Re-ChIP assay suggests that MKL1 interacts with and recruits WDR5, a component of the COMPASS complex responsible for H3K4 methylation, to the promoter regions of pro-inflammatory genes in macrophages treated with TNF-α. WDR5 enhances the ability of MKL1 to stimulate the promoter activities of pro-inflammatory genes. In contrast, silencing of WDR5 attenuates TNF-α induced production of pro-inflammatory mediators and erases the H3K4 methylation from the gene promoters. Of interest, the chromatin remodeling protein BRG1 also plays an essential role in maintaining H3K4 methylation on MKL1 target promoters by interacting with WDR5. MKL1 knockdown disrupts the interaction between BRG1 and WDR5. Together, our data illustrate a role for MKL1 in moderating the crosstalk between BRG1 and WDR5 to activate TNF-α induced pro-inflammatory transcription in macrophages.
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Affiliation(s)
- Wenping Xu
- Department of Medicine, Jiangsu Jiankang Vocational College, Nanjing, Jiangsu 211800, China
| | - Quanyi Zhao
- Department of Biochemistry and Molecular Biology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Min Wu
- Department of Biochemistry and Molecular Biology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Mingming Fang
- Department of Medicine, Jiangsu Jiankang Vocational College, Nanjing, Jiangsu 211800, China
| | - Yong Xu
- Department of Pathophysiology, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, Jiangsu 211166, China
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Megakaryocytic leukemia 1 (MKL1) mediates high glucose induced epithelial-mesenchymal transition by activating LOX transcription. Biochem Biophys Res Commun 2018; 509:633-640. [PMID: 30553442 DOI: 10.1016/j.bbrc.2018.12.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 12/04/2018] [Indexed: 12/17/2022]
Abstract
Diabetic retinopathy (DR) is one of the most devastating complications of diabetes mellitus. When exposed to high glucose (HG), retinal epithelial cells undergo profound alterations both morphologically and functionally in a well-conserved process known as epithelial-to-mesenchymal transition (EMT). The mechanism governing HG-induced EMT in retinal epithelial cells is not completely understood. Here we report that treatment with 25 mM glucose led to EMT in retinal pigmented epithelial cells (RPE) characterized by a simultaneous down-regulation of E-Cadherin (encoded by CDH1) and up-regulation of alpha smooth muscle actin (encoded by ACTA2). HG-induced EMT in RPEs was accompanied by augmented expression and enhanced nuclear enrichment of MKL1, a transcriptional modulator. In contrast, MKL1 knockdown by siRNA or inhibition by CCG-1423 abrogated HG-induced EMT in RPEs. Of interest, MKL1 mediated the transcriptional activation of LOX, a mesenchymal marker, in RPEs in response to HG stimulation. Mechanistically, MKL1 interacted with and was recruited by AP-1 to the proximal LOX promoter to promote LOX trans-activation likely through altering the chromatin structure. Finally, LOX depletion by siRNA or inhibition by aminopropionitrile in RPEs abolished HG-induced EMT. In conclusion, our data support a role for MKL1 in mediating HG-induced EMT in retinal epithelial cells via epigenetic activation of LOX transcription.
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35
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Chen B, Li Z, Feng Y, Wu X, Xu Y. Myocardin-related transcription factor A (MRTF-A) mediates doxorubicin-induced PERP transcription in colon cancer cells. Biochem Biophys Res Commun 2018; 503:1732-1739. [DOI: 10.1016/j.bbrc.2018.07.106] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 07/21/2018] [Indexed: 10/28/2022]
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36
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Huang Y, Peng Q, Li HY, Jia ZD, Li Y, Gao Y. Novel sericin-based hepatocyte serum-free medium and sericin’s effect on hepatocyte transcriptome. World J Gastroenterol 2018; 24:3398-3413. [PMID: 30122879 PMCID: PMC6092578 DOI: 10.3748/wjg.v24.i30.3398] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 06/17/2018] [Accepted: 06/28/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To develop a novel hepatocyte serum-free medium based on sericin, and to explore the effect of sericin on the hepatocyte transcriptome.
METHODS A controlled trial comparing novel serum-free medium and other media: C3A cells were cultured in our novel serum-free medium, HepatoZYME, complete medium (DMEM/F12 with 100 mL/L FBS), and DMEM/F12, and then cell attachment, proliferation, and function as well as the biocompatibility of the media were assessed. A comparative study of serum-free media with or without 2 mg/mL sericin: the effect of sericin on C3A growth was assessed by cell viability and proliferation, the effect of sericin on C3A cell cycle distribution was determined by flow cytometry, and the effect of sericin on the C3A transcriptome was assessed by gene-chip array and RT-qPCR.
RESULTS More C3A cells attached to the plate containing our serum-free medium than to those containing HepatoZYME and DMEM/F12 at 24 h post-seeding. Both the viability and proliferation rate of C3A cells in sericin-based serum-free medium were superior to those of cells in HepatoZYME and DMEM/F12 (P < 0.001). The content of albumin and urea in our serum-free medium was significantly higher than that in HepatoZYME and DMEM/F12 throughout the whole culture period (P < 0.001) and was similar to that in complete medium at day 3, 4, and 5. In part 2, cell viability and proliferation were greater in the presence of 2 mg/mL sericin (P < 0.001), as was the proportion of cells in S phase (16.21% ± 0.98% vs 12.61% ± 0.90%, P < 0.01). Gene-chip array analysis indicated that the expression of CCR6, EGFR, and FOS were up-regulated by 2 mg/mL sericin, and RT-qPCR revealed that the expression of CCR6, EGFR, FOS, AKT1, JNK1, NFkB1, MMP-9, MEK2, ERK1/2 and MYC was up-regulated by 2 mg/mL sericin (P < 0.05).
CONCLUSION We developed a novel hepatocyte serum-free medium. Sericin probably enhances cell attachment through the CCR6-Akt-JNK-NF-κB pathway and promotes cell proliferation through CCR6-mediated activation of the ERK1/2-MAPK pathway.
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Affiliation(s)
- Yun Huang
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center for Artificial Organ and Tissue Engineering, Guangzhou Clinical Research and Transformation Center for Artificial Liver, Institute of Regenerative Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, Guangdong Province, China
| | - Qing Peng
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center for Artificial Organ and Tissue Engineering, Guangzhou Clinical Research and Transformation Center for Artificial Liver, Institute of Regenerative Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, Guangdong Province, China
| | - Hai-Yan Li
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center for Artificial Organ and Tissue Engineering, Guangzhou Clinical Research and Transformation Center for Artificial Liver, Institute of Regenerative Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, Guangdong Province, China
| | - Zhi-Dong Jia
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center for Artificial Organ and Tissue Engineering, Guangzhou Clinical Research and Transformation Center for Artificial Liver, Institute of Regenerative Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, Guangdong Province, China
| | - Yang Li
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center for Artificial Organ and Tissue Engineering, Guangzhou Clinical Research and Transformation Center for Artificial Liver, Institute of Regenerative Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, Guangdong Province, China
| | - Yi Gao
- Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center for Artificial Organ and Tissue Engineering, Guangzhou Clinical Research and Transformation Center for Artificial Liver, Institute of Regenerative Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, Guangdong Province, China
- State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou 510515, Guangdong Province, China
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Liu L, Wu X, Xu H, Yu L, Zhang X, Li L, Jin J, Zhang T, Xu Y. Myocardin-related transcription factor A (MRTF-A) contributes to acute kidney injury by regulating macrophage ROS production. Biochim Biophys Acta Mol Basis Dis 2018; 1864:3109-3121. [PMID: 29908908 DOI: 10.1016/j.bbadis.2018.05.026] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 05/11/2018] [Accepted: 05/31/2018] [Indexed: 11/17/2022]
Abstract
A host of pathogenic factors induce acute kidney injury (AKI) leading to insufficiencies of renal function. In the present study we evaluated the role of myocardin-related transcription factor A (MRTF-A) in the pathogenesis of AKI. We report that systemic deletion of MRTF-A or inhibition of MRTF-A activity with CCG-1423 significantly attenuated AKI in mice induced by either ischemia-reperfusion or LPS injection. Of note, MRTF-A deficiency or suppression resulted in diminished renal ROS production in AKI models with down-regulation of NAPDH oxdiase 1 (NOX1) and NOX4 expression. In cultured macrophages, MRTF-A promoted NOX1 transcription in response to either hypoxia-reoxygenation or LPS treatment. Interestingly, macrophage-specific MRTF-A deletion ameliorated AKI in mice. Mechanistic analyses revealed that MRTF-A played a role in regulating histone H4K16 acetylation surrounding the NOX gene promoters by interacting with the acetyltransferase MYST1. MYST1 depletion repressed NOX transcription in macrophages. Finally, administration of a MYST1 inhibitor MG149 alleviated AKI in mice. Therefore, we data illustrate a novel epigenetic pathway that controls ROS production in macrophages contributing to AKI. Targeting the MRTF-A-MYST1-NOX axis may yield novel therapeutic strategies to combat AKI.
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Affiliation(s)
- Li Liu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Xiaoyan Wu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Huihui Xu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Liming Yu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Xinjian Zhang
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Luyang Li
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Jianliang Jin
- Department of Anatomy and Histology, Nanjing Medical University, Nanjing, China
| | - Tao Zhang
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China; Department of Renal Medicine, Jiangsu Remin Hospital affiliated to Nanjing Medical University, Nanjing, China.
| | - Yong Xu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China.
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Rivero-Hinojosa S, Lau LS, Stampar M, Staal J, Zhang H, Gordish-Dressman H, Northcott PA, Pfister SM, Taylor MD, Brown KJ, Rood BR. Proteomic analysis of Medulloblastoma reveals functional biology with translational potential. Acta Neuropathol Commun 2018; 6:48. [PMID: 29880060 PMCID: PMC5992829 DOI: 10.1186/s40478-018-0548-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Accepted: 05/17/2018] [Indexed: 12/14/2022] Open
Abstract
Genomic characterization has begun to redefine diagnostic classifications of cancers. However, it remains a challenge to infer disease phenotypes from genomic alterations alone. To help realize the promise of genomics, we have performed a quantitative proteomics investigation using Stable Isotope Labeling by Amino Acids in Cell Culture (SILAC) and 41 tissue samples spanning the 4 genomically based subgroups of medulloblastoma and control cerebellum. We have identified and quantitated thousands of proteins across these groups and find that we are able to recapitulate the genomic subgroups based upon subgroup restricted and differentially abundant proteins while also identifying subgroup specific protein isoforms. Integrating our proteomic measurements with genomic data, we calculate a poor correlation between mRNA and protein abundance. Using EPIC 850 k methylation array data on the same tissues, we also investigate the influence of copy number alterations and DNA methylation on the proteome in an attempt to characterize the impact of these genetic features on the proteome. Reciprocally, we are able to use the proteome to identify which genomic alterations result in altered protein abundance and thus are most likely to impact biology. Finally, we are able to assemble protein-based pathways yielding potential avenues for clinical intervention. From these, we validate the EIF4F cap-dependent translation pathway as a novel druggable pathway in medulloblastoma. Thus, quantitative proteomics complements genomic platforms to yield a more complete understanding of functional tumor biology and identify novel therapeutic targets for medulloblastoma.
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Yuan L, Zeng G, Chen L, Wang G, Wang X, Cao X, Lu M, Liu X, Qian G, Xiao Y, Wang X. Identification of key genes and pathways in human clear cell renal cell carcinoma (ccRCC) by co-expression analysis. Int J Biol Sci 2018; 14:266-279. [PMID: 29559845 PMCID: PMC5859473 DOI: 10.7150/ijbs.23574] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/11/2018] [Indexed: 12/13/2022] Open
Abstract
Human clear cell renal cell carcinoma (ccRCC) is the most common solid lesion within kidney, and its prognostic is influenced by the progression covering a complex network of gene interactions. In our study, we screened differential expressed genes, and constructed protein-protein interaction (PPI) network and a weighted gene co-expression network to identify key genes and pathways associated with the progression of ccRCC (n = 56). Functional and pathway enrichment analysis demonstrated that upregulated differentially expressed genes (DEGs) were significantly enriched in response to wounding, positive regulation of immune system process, leukocyte activation, immune response and cell activation. Downregulated DEGs were significantly enriched in oxidation reduction, monovalent inorganic cation transport, ion transport, excretion and anion transport. In the PPI network, top 10 hub genes were identified (TOP2A, MYC, ALB, CDK1, VEGFA, MMP9, PTPRC, CASR, EGFR and PTGS2). In co-expression network, 6 ccRCC-related modules were identified. They were associated with immune response, metabolic process, cell cycle regulation, angiogenesis and ion transport. In conclusion, our study illustrated the hub genes and pathways involved in the progress of ccRCC, and further molecular biological experiments are needed to confirm the function of the candidate biomarkers in human ccRCC.
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Affiliation(s)
- Lushun Yuan
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Guang Zeng
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Liang Chen
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Gang Wang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China.,Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xiaolong Wang
- Department of Urology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Xinyue Cao
- Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Mengxin Lu
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xuefeng Liu
- Department of Pathology, Lombardi Comprehensive Cancer Center, Georgetown University Medical School, Washington DC, USA
| | - Guofeng Qian
- Department of Endocrinology, The First Affiliated Hospital of Zhejiang University, Hangzhou, China
| | - Yu Xiao
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan, China.,Laboratory of Precision Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xinghuan Wang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
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Hong M, Cheng H, Song L, Wang W, Wang Q, Xu D, Xing W. Wogonin Suppresses the Activity of Matrix Metalloproteinase-9 and Inhibits Migration and Invasion in Human Hepatocellular Carcinoma. Molecules 2018; 23:molecules23020384. [PMID: 29439451 PMCID: PMC6017513 DOI: 10.3390/molecules23020384] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 01/22/2018] [Accepted: 02/07/2018] [Indexed: 12/17/2022] Open
Abstract
As one of the major active ingredients in Radix Scutellariae, wogonin has been shown to be associated with various pharmacological activities on cancer cell growth, apoptosis, and cell invasion and migration. Here, we demonstrated that wogonin may harbor potential anti-metastatic activities in hepatocarcinoma (HCC). The anti-metastasis potential of wogonin and its underlying mechanisms were evaluated by ligand–protein docking approach, surface plasmon resonance assay, and in vitro gelatin zymography studies. Our results showed that wogonin (100 μM, 50 μM) suppressed MHCC97L and PLC/PRF/5 cells migration and invasion in vitro. The docking approach and surface plasmon resonance assay indicated that the potential binding affinity between wogonin and matrix metalloproteinase-9 (MMP-9) may lead to inhibition of MMP-9 activity and further leads to suppression of tumor metastasis. This conclusion was further verified by Western blot results and gelatin zymography analysis. Wogonin might be a potent treatment option for disrupting the tumor metastasis that favors HCC development. The potential active targets from computational screening integrated with biomedical study may help us to explore the molecular mechanism of herbal medicines.
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Affiliation(s)
- Ming Hong
- Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, 12 Jichang Road, Guangzhou 510405, China.
| | - Honghui Cheng
- College of mechanical engineering, Yangzhou University, 88 South University Ave., Yangzhou 225009, China.
| | - Lei Song
- Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, 12 Jichang Road, Guangzhou 510405, China.
| | - Wencai Wang
- Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, 12 Jichang Road, Guangzhou 510405, China.
| | - Qi Wang
- Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, 12 Jichang Road, Guangzhou 510405, China.
| | - Donggang Xu
- Department of Genome Engineering, Beijing Institute of Basic Medical Sciences, Taiping Road 27, Beijing 100850, China.
| | - Weiwei Xing
- Department of Genome Engineering, Beijing Institute of Basic Medical Sciences, Taiping Road 27, Beijing 100850, China.
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Liu L, Chen J, Sun L, Xu Y. RhoJ promotes hypoxia induced endothelial‐to‐mesenchymal transition by activating WDR5 expression. J Cell Biochem 2018; 119:3384-3393. [DOI: 10.1002/jcb.26505] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 11/07/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Li Liu
- Key Laboratory of Targeted Invention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine,Department of PathophysiologyNanjing Medical UniversityNanjingChina
| | - Junliang Chen
- Key Laboratory of Targeted Invention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine,Department of PathophysiologyNanjing Medical UniversityNanjingChina
- Department of Pathophysiology, Wuxi College of MedicineJiangnan UniversityJiangsuChina
| | - Lina Sun
- Key Laboratory of Targeted Invention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine,Department of PathophysiologyNanjing Medical UniversityNanjingChina
- Department of Pathology and PathophysiologySoochow UniversityJiangsuChina
| | - Yong Xu
- Key Laboratory of Targeted Invention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine,Department of PathophysiologyNanjing Medical UniversityNanjingChina
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42
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Xu X, Cao L, Zhang Y, Yin Y, Hu X, Cui Y. Network analysis of DEGs and verification experiments reveal the notable roles of PTTG1 and MMP9 in lung cancer. Oncol Lett 2018; 15:257-263. [PMID: 29387220 PMCID: PMC5768071 DOI: 10.3892/ol.2017.7329] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 06/02/2017] [Indexed: 01/05/2023] Open
Abstract
Lung cancer, a malignant tumor, is the most frequently fatal cancer, with poor survival rates in the advanced stages. In order to improve the understanding of this disease, and to improve the outcomes of patients, additional studies are required. In the present study, differentially expressed genes (DEGs) in patients with lung cancer compared with controls were identified. To understand how these DEGs act together to account for the initiation of lung cancer, a protein interaction network and a transcriptional regulatory network were constructed to explore the clusters and pathways in lung cancer, and the results indicated that PTTG1 and MMP9 served major roles in the development of lung cancer in the regulatory system. Consistent with this, mRNA and protein expression levels of PTTG1 and MMP9 were significantly upregulated in lung cancer tissues compared with normal lung tissues. The overexpression of PTTG1 or MMP9 was induced in the human bronchial epithelial BEAS-2B cell line, indicating that increased PTTG1 or MMP9 alone may not only facilitate cell migration, proliferation and induce colony formation, but also suppress cell apoptosis. In summary, PTTG1 and MMP9 were identified as potential targets for therapeutic intervention through gene therapy in lung cancer.
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Affiliation(s)
- Xiaohui Xu
- Department of Thoracic Surgery, Peking Union Medical College Hospital, Beijing 100730, P.R. China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, P.R. China
| | - Lei Cao
- Department of Thoracic Surgery, Peking Union Medical College Hospital, Beijing 100730, P.R. China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, P.R. China
| | - Ye Zhang
- Department of Thoracic Surgery, Peking Union Medical College Hospital, Beijing 100730, P.R. China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, P.R. China
| | - Yan Yin
- Department of Thoracic Surgery, Peking Union Medical College Hospital, Beijing 100730, P.R. China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, P.R. China
| | - Xue Hu
- Department of Thoracic Surgery, Peking Union Medical College Hospital, Beijing 100730, P.R. China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, P.R. China
| | - Yushang Cui
- Department of Thoracic Surgery, Peking Union Medical College Hospital, Beijing 100730, P.R. China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, P.R. China
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Zhang X, Chen J, Sun L, Xu Y. SIRT1 deacetylates KLF4 to activate Claudin-5 transcription in ovarian cancer cells. J Cell Biochem 2017; 119:2418-2426. [PMID: 28888043 DOI: 10.1002/jcb.26404] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 08/30/2017] [Indexed: 12/23/2022]
Abstract
Malignant cancers are distinguished from more benign forms of cancers by enhanced ability to disseminate. A number of factors aid the migration and invasion of malignant cancer cells. Epithelial-to-mesenchymal transition (EMT), which greatly facilitates the dissemination of cancer cells, is characterized by the loss of epithelial markers and the acquisition of mesenchymal markers thereby rendering the cells more migratory and invasive. We have previously shown that the class III lysine deacetylase SIRT1 plays a critical role curbing the metastasis of ovarian cancer cells partly by blocking EMT. Here we investigated the mechanism by which SIRT1 regulates the transcription of Claudin 5 (CLDN5), an epithelial marker gene, in ovarian cancer cells. SIRT1 activation or over-expression up-regulated CLDN5 expression while SIRT1 inhibition or depletion down-regulated CLDN5 expression. SIRT1 interacted with and deacetylated Kruppel-like factor 4 (KLF4), a known transcriptional activator for CLDN5. Deacetylation by SIRT1 promoted nuclear accumulation of KLF4 and enhanced the binding of KLF4 to the CLDN5 promoter in the nucleus. SIRT1-mediated up-regulation of CLDN5 was abrogated in the absence of KLF4. In accordance, KLF4 depletion by siRNA rendered ovarian cancer cells more migratory and invasive despite of SIRT1 activation or over-expression. In conclusion, our data suggest that SIRT1 activates CLDN5 transcription by deacetylating and potentiating KLF4.
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Affiliation(s)
- Xinjian Zhang
- Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Junliang Chen
- Department of Pathophysiology, Wuxi College of Medicine, Jiangnan University, Nanjing, Jiangsu, China
| | - Lina Sun
- Department of Pathology and Pathophysiology, Soochow University, Suzhou, Jiangsu, China
| | - Yong Xu
- Department of Pathophysiology, Nanjing Medical University, Nanjing, China
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HADC5 deacetylates MKL1 to dampen TNF-α induced pro-inflammatory gene transcription in macrophages. Oncotarget 2017; 8:94235-94246. [PMID: 29212224 PMCID: PMC5706870 DOI: 10.18632/oncotarget.21670] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 09/18/2017] [Indexed: 12/20/2022] Open
Abstract
Macrophage-dependent inflammatory response on the one hand functions as a key line of defense in host immunity but on the other hand underlies the pathogenesis of a host of human pathologies when aberrantly activated. Our previous investigations have led to the identification of megakaryocytic leukemia 1 (MKL1) as a key co-factor of NF-κB/p65 participating in TNF-α induced pro-inflammatory transcription in macrophages. How post-translational modifications contribute to the modulation of MKL1 activity remains an underexplored subject matter. Here we report that the lysine deacetylase HDAC5 interacts with and deacetylates MKL1 in cells. TNF-α treatment down-regulates HDAC5 expression and expels HDAC5 from the promoters of pro-inflammatory genes in macrophages. In contrast, over-expression of HDAC5 attenuates TNF-α induced pro-inflammatory transcription. Mechanistically, HDAC5-mediated MKL1 deacetylation disrupts the interaction between MKL1 and p65. In addition, deacetylation of MKL1 by HDAC5 blocks its nuclear translocation in response to TNF-α treatment. In conclusion, our work has identified an important pathway that contributes to the regulation of pro-inflammatory response in macrophages.
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Li L, Wang S, Yang X, Long S, Xiao S, Wu W, Hann SS. Traditional Chinese medicine, Fuzheng Kang‑Ai decoction, inhibits metastasis of lung cancer cells through the STAT3/MMP9 pathway. Mol Med Rep 2017; 16:2461-2468. [PMID: 28677797 PMCID: PMC5548059 DOI: 10.3892/mmr.2017.6905] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 04/28/2017] [Indexed: 12/21/2022] Open
Abstract
Lung cancer is a leading cause of cancer-associated mortality worldwide, including in developing countries such as China. Traditional Chinese medicine may provide a novel insight for the treatment of patients with lung cancer. The present study aimed to uncover the mechanism by which the Chinese herbal medicine, Fuzheng Kang-Ai (FZKA), functions on lung cancer cell metastasis. The results demonstrated that treatment with FZKA markedly inhibited cell viability, migration and invasion of lung cancer cells, as determined by cell viability and Transwell assays. Notably, the activity and expression of matrix metalloproteinase 9 (MMP9) was significantly inhibited by FZKA treatment on lung cancer cells, as determined by an MMP9 activity assay and western blot analysis. Furthermore, FZKA markedly inhibited epithelial-mesenchymal transition (EMT) of lung cancer cells by inhibiting the expression of the mesenchymal markers N-cadherin and vimentin. In addition, activation of the oncoprotein signal transducer and activator of transcription 3 (STAT3) was suppressed following treatment with FZKA. Conversely, overexpression of STAT3 was able to rescue MMP9 activity following FZKA treatment. The present study indicated that FZKA may inhibit lung cancer metastasis via the STAT3/MMP9 pathway and EMT, suggesting that FZKA may serve as a novel promising therapeutic strategy for the treatment of patients with late stage lung cancer.
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Affiliation(s)
- Longmei Li
- Laboratory of Tumor Biology and Targeted Therapies of TCM, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong 510120, P.R. China
| | - Sumei Wang
- Department of Medical Oncology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong 510120, P.R. China
| | - Xiaobin Yang
- Department of Medical Oncology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong 510120, P.R. China
| | - Shunqin Long
- Department of Medical Oncology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong 510120, P.R. China
| | - Shujing Xiao
- Department of Medical Oncology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong 510120, P.R. China
| | - Wanyin Wu
- Department of Medical Oncology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong 510120, P.R. China
| | - Swei Sunny Hann
- Laboratory of Tumor Biology and Targeted Therapies of TCM, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong 510120, P.R. China
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Yu L, Li Z, Fang M, Xu Y. Acetylation of MKL1 by PCAF regulates pro-inflammatory transcription. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2017; 1860:839-847. [PMID: 28571745 DOI: 10.1016/j.bbagrm.2017.05.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 05/08/2017] [Accepted: 05/28/2017] [Indexed: 01/14/2023]
Abstract
Inflammation is considered a fundamental host defense mechanism and, when aberrantly activated, contributes to a host of human diseases. Previously we have reported that the transcriptional regulator megakaryocytic leukemia 1 (MKL1) plays a role programming cellular inflammatory response by modulating NF-κB activity. Here we report that MKL1 was acetylated in vivo and pro-inflammatory stimuli (TNF-α and LPS) augmented MKL1 acetylation accompanying increased MKL1 binding to NF-κB target promoters. Further analysis revealed that the lysine acetyltransferase PCAF mediated MKL1 acetylation: TNF-α and LPS promoted the interaction between MKL1 and PCAF whereas depletion of PCAF abrogated the induction of MKL1 acetylation by TNF-α and LPS. Acetylation of MKL1 was necessary for MKL1 to activate the transcription of pro-inflammatory genes because mutation of four conserved lysine residues in MKL1 attenuated its capacity as a trans-activator of NF-κB target genes. Mechanistically, MKL1 acetylation served to promote MKL1 nuclear enrichment, to enhance the MKL1-NF-κB interaction, and to stabilize the binding of MKL1 on target promoters. In conclusion, our data unveil an important pathway that contributes to the transcriptional regulation of inflammatory response.
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Affiliation(s)
- Liming Yu
- Department of Pathophysiology, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China
| | - Zilong Li
- Department of Pathophysiology, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China
| | - Mingming Fang
- Department of Nursing, Jiangsu Jiankang Vocational College, Nanjing, China
| | - Yong Xu
- Department of Pathophysiology, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China.
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47
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Xu W, Xu H, Fang M, Wu X, Xu Y. MKL1 links epigenetic activation of MMP2 to ovarian cancer cell migration and invasion. Biochem Biophys Res Commun 2017; 487:500-508. [PMID: 28385531 DOI: 10.1016/j.bbrc.2017.04.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 04/02/2017] [Indexed: 11/15/2022]
Abstract
Responding to pro-metastatic cues such as low oxygen tension, cancer cells develop several different strategies to facilitate migration and invasion. During this process, expression levels of matrix metalloproteinases (MMPs) are up-regulated so that cancer cells can more easily enter or exit the circulation. In this report we show that message levels of the transcriptional modulator MKL1 were elevated in malignant forms of ovarian cancer tissues in humans when compared to more benign forms accompanying a similar change in MMP2 expression. MKL1 silencing blocked hypoxia-induced migration and invasion of ovarian cancer cells (SKOV-3) in vitro. Over-expression of MKL1 activated while MKL1 depletion repressed MMP2 transcription in SKOV-3 cells. MKL1 was recruited to the MMP2 promoter by NF-κB in response to hypoxia. Mechanistically, MKL1 recruited a histone methyltransferase, SET1, and a chromatin remodeling protein, BRG1, and coordinated their interaction to alter the chromatin structure surrounding the MMP2 promoter leading to transcriptional activation. Both BRG1 and SET1 were essential for hypoxia-induced MMP2 trans-activation. Finally, expression levels of SET1 and BRG1 were positively correlated with ovarian cancer malignancies in humans. Together, our data suggest that MKL1 promotes ovarian cancer cell migration and invasion by epigenetically activating MMP2 transcription.
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Affiliation(s)
- Wenping Xu
- Department of Pathophysiology, Jiangsu Jiankang Vocational College, Nanjing, China
| | - Huihui Xu
- Key Laboratory of Cardiovascular Disease, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Mingming Fang
- Department of Nursing, Jiangsu Jiankang Vocational College, Nanjing, China
| | - Xiaoyan Wu
- Key Laboratory of Cardiovascular Disease, Department of Pathophysiology, Nanjing Medical University, Nanjing, China.
| | - Yong Xu
- Key Laboratory of Cardiovascular Disease, Department of Pathophysiology, Nanjing Medical University, Nanjing, China.
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Bei Y, Tianqian H, Fanyuan Y, Haiyun L, Xueyang L, Jing Y, Chenglin W, Ling Y. ASH1L Suppresses Matrix Metalloproteinase through Mitogen-activated Protein Kinase Signaling Pathway in Pulpitis. J Endod 2016; 43:306-314.e2. [PMID: 28041684 DOI: 10.1016/j.joen.2016.10.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Revised: 09/21/2016] [Accepted: 10/11/2016] [Indexed: 02/05/2023]
Abstract
INTRODUCTION Pulpitis is an inflammation of dental pulp produced by a response to external stimuli. The response entails substantial cellular and molecular activities. Both genetic and epigenetic regulators contribute to the occurrence of pulpitis. However, the epigenetic mechanisms are still poorly understood. In this research, we studied the role of the absent, small, or homeotic-like (ASH1L) gene in the process of pulpitis. METHODS Human dental pulp cells (HDPCs) were stimulated with proinflammatory cytokine tumor necrosis factor alpha (TNF-α). Gene expression profiling was performed to assess the occurrence of epigenetic regulators. Pulp tissue from rat experimental pulpitis was subjected to immunofluorescence to detect the occurrence of ASH1L and trimethylation of lysine 4 histone 3 (H3K4me3). The presence of ASH1L in HDPCs that had been generated by TNF-α stimulation was analyzed by Western blot procedures and cellular immunofluorescence. Once detected, ASH1L was silenced through the use of specific small interfering RNA. The effects of ASH1L on the occurrence and operation of matrix metalloproteinases (MMPs) were then tested by analysis of quantitative polymerase chain reactions, Western blotting, and zymography. Chromatin immunoprecipitation was performed to detect whether ASH1L and H3K4me3 were present in the promoter regions of MMPs. We then used Western blot procedures to examine the nuclear factor kappa B and the mitogen-activated protein kinase (MAPK) responses to the silencing of ASH1L. We also examined the specific pathway involved in ASH1L regulation of the MMPs. RESULTS After stimulating HDPCs with TNF-α, ASH1L emerged as 1 of the most strongly induced epigenetic mediators. We found that TNF-α treatment induced the expression of ASH1L through the nuclear factor kappa B and MAPK signal pathways. ASH1L was found in both the nucleus and the cytoplasm. TNF-α treatment was particularly active in inducing the accumulation of ASH1L in cellular cytoplasm. As is also consistent with in vitro results, ASH1L was found in increased quantities in experimental dental pulpitis tissue. ASH1L knockdown markedly up-regulated the occurrence of MMP-1, MMP-2, and MMP-13. It also exercised an impact on the enzymatic activity of MMP-2 in HDPCs that had been stimulated with TNF-α. ASH1L knockdown activated the MAPK signal pathway in TNF-α-triggered HDPCs, the inhibition of which reversed the induction of MMPs. CONCLUSIONS Our research identifies a mechanism by which ASH1L suppresses the occurrence and operation of MMPs during pulpitis. It does this through the MAPK pathway.
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Affiliation(s)
- Yin Bei
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hui Tianqian
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yu Fanyuan
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Luo Haiyun
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Liao Xueyang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yang Jing
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Wang Chenglin
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ye Ling
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
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Hu Z, Wang Y, Wang Y, Zang B, Hui H, You Z, Wang X. Epigenetic activation of SIN1 promotes NSCLC cell proliferation and metastasis by affecting the epithelial-mesenchymal transition. Biochem Biophys Res Commun 2016; 483:645-651. [PMID: 27993679 DOI: 10.1016/j.bbrc.2016.12.089] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Accepted: 12/13/2016] [Indexed: 11/17/2022]
Abstract
Stress-activated protein kinase (SAPK) interacting protein 1 (SIN1) is an essential component of mTORC2. Previous studies have shown that SIN1 is a key regulator of Akt pathway which plays an important role in various pathological conditions including cancer. While its effects and mechanisms on the progression of NSCLC remain unknown. In this study, we report that SIN1 is able to promote the growth and migration of NSCLC cells both in vitro and in vivo. Overexpression of SIN1 promoted A549 and H1299 cells proliferation by both MTT and colony formation assays. Consistently, knockdown of SIN1 inhibited the proliferation of these cells. In transwell assay, overexpression of SIN1 increased the migration of A549 and H1299 cells, while SIN1 knockdown reduced their migration. In a tumor xenograft model, overexpression of SIN1 promoted tumor growth of A549 cells in vivo, while SIN1 knockdown suppresses the tumor growth. We also found a mechanistic link between SIN1 and H3K4me3, H3K4me3 is involved in SIN1 upregulation. Moreover, SIN1 can significantly promote the in vitro migration and invasion of NSCLC cells via induction epithelial mesenchymal transition (EMT) process, which subsequently leads to transcriptional downregulation of epithelial marker E-cadherin and upregulation of mesenchymal markers N-cadherin and Vimentin expression. Together, our results reveal that SIN1 plays an important role in NSCLC and SIN1 is a potential biomarker and a promising target in the treatment of NSCLC.
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Affiliation(s)
- Zhongwu Hu
- Department of Thoracic Surgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, 223300, PR China
| | - Yaqin Wang
- Department of Thoracic Surgery, Huai'an Hospital Affiliated to Xuzhou Medical University, Huai'an, Jiangsu, 223002, PR China
| | - Yuemei Wang
- Department of Operation Anesthesiology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, 223300, PR China
| | - Bao Zang
- Department of Thoracic Surgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, 223300, PR China
| | - Hongxia Hui
- Department of Medical Oncology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, 223300, PR China
| | - Zhenbing You
- Department of Thoracic Surgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, 223300, PR China
| | - Xiaowei Wang
- Department of Medical Oncology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, 223300, PR China.
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50
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Finch-Edmondson M, Sudol M. Framework to function: mechanosensitive regulators of gene transcription. Cell Mol Biol Lett 2016; 21:28. [PMID: 28536630 PMCID: PMC5415767 DOI: 10.1186/s11658-016-0028-7] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 11/16/2016] [Indexed: 01/06/2023] Open
Abstract
Mechanobiology has shifted our understanding of fundamental cellular and physiological functions. Changes to the stiffness of the extracellular matrix, cell rigidity, or shape of the cell environment were considered in the past to be a consequence of aging or pathological processes. We now understand that these factors can actually be causative biological mediators of cell growth to control organ size. Mechanical cues are known to trigger a relatively fast translocation of specific transcriptional co-factors such as MRTFs, YAP and TAZ from the cytoplasm to the cell nucleus to initiate discrete transcriptional programs. The focus of this review is the molecular mechanisms by which biophysical stimuli that induce changes in cytoplasmic actin dynamics are communicated within cells to elicit gene-specific transcription via nuclear localisation or activation of specialized transcription factors, namely MRTFs and the Hippo pathway effectors YAP and TAZ. We propose here that MRTFs, YAP and TAZ closely collaborate as mechano-effectors.
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Affiliation(s)
- Megan Finch-Edmondson
- Mechanobiology Institute, National University of Singapore, 5A Engineering Drive 1, 117411 Singapore, Singapore.,Department of Physiology, National University of Singapore, Yong Loo Lin School of Medicine, 2 Medical Drive, 117597 Singapore, Singapore
| | - Marius Sudol
- Mechanobiology Institute, National University of Singapore, 5A Engineering Drive 1, 117411 Singapore, Singapore.,Department of Physiology, National University of Singapore, Yong Loo Lin School of Medicine, 2 Medical Drive, 117597 Singapore, Singapore
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