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Sun F, Liu J, Wang Y, Yang H, Song D, Fu H, Feng X. BASP1 promotes high glucose-induced endothelial apoptosis in diabetes via activation of EGFR signaling. J Diabetes Investig 2023; 14:535-547. [PMID: 36756695 PMCID: PMC10034959 DOI: 10.1111/jdi.13920] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 09/08/2022] [Accepted: 09/19/2022] [Indexed: 02/10/2023] Open
Abstract
AIMS Diabetes mellitus is a common chronic disease of glucose metabolism. Endothelial dysfunction is an early event in diabetes complicated by cardiovascular disease. This study aimed to reveal the expression of BASP1 and its biological roles in endothelial cell dysfunction in diabetes complicated by cardiovascular disease. MATERIALS AND METHODS By analyzing the databases related to diabetes complicated with coronary heart disease, BASP1 was screened out as an upregulated gene. Human umbilical vein endothelial cells (HUVECs) and primary mouse aortic endothelial cells were treated with high glucose to establish cell models of diabetes-related endothelial dysfunction, and the expression changes of BASP1 were verified by RT-qPCR, western blot, and immunofluorescence. BASP1 was silenced or overexpressed by siRNA or overexpression plasmid, and its effects on cell migration, apoptosis, tube formation, inflammatory response, and ROS were detected. The possible signaling pathway of BASP1 was found and the mechanism of BASP1 on promoting the progression of endothelial dysfunction was explored using the EGFR inhibitor, gefitinib. RESULTS Bioinformatics analysis indicated that the expression of BASP1 in patients with diabetes mellitus and concomitant coronary heart disease was increased. High glucose induced the upregulation of BASP1 expression in endothelial cells, and showed a time-dependent relationship. Silencing of BASP1 alleviated the damage of high glucose to endothelial cells. BASP1 regulated EGFR positively. The promoting effect of BASP1 on endothelial cell apoptosis may be achieved by regulating the EGFR pathway. CONCLUSION BASP1 promotes endothelial cell injury induced by high glucose in patients with diabetes, which may be activated by activating the EGFR pathway.
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Affiliation(s)
- Fengnan Sun
- Department of Laboratory Medicine, Yantaishan Hospital, Yantai, China
| | - Junwei Liu
- Department of Laboratory Medicine, Qishan Hospital, Yantai, China
| | - Yanzheng Wang
- Department of Laboratory Medicine, Yantaishan Hospital, Yantai, China
| | - Hongmei Yang
- Department of Laboratory Medicine, Yantaishan Hospital, Yantai, China
| | - Danfeng Song
- Department of Laboratory Medicine, Yantaishan Hospital, Yantai, China
| | - Haiyan Fu
- Department of Laboratory Medicine, Yantaishan Hospital, Yantai, China
| | - Xingxing Feng
- Kunming Key Laboratory of Children Infection and Immunity, Yunnan Key Laboratory of Children's Major Disease Research, Yunnan Institute of Pediatrics, Kunming Children's Hospital, Kunming, China
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2
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Xue S, Ma M, Bei S, Li F, Wu C, Li H, Hu Y, Zhang X, Qian Y, Qin Z, Jiang J, Feng L. Identification and Validation of the Immune Regulator CXCR4 as a Novel Promising Target for Gastric Cancer. Front Immunol 2021; 12:702615. [PMID: 34322132 PMCID: PMC8311657 DOI: 10.3389/fimmu.2021.702615] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/10/2021] [Indexed: 12/24/2022] Open
Abstract
Immune checkpoint blockade has attracted a lot of attention in the treatment of human malignant tumors. We are trying to establish a prognostic model of gastric cancer (GC) based on the expression profile of immunoregulatory factor-related genes. Based on the TCGA database, we identified 234 differentially expressed immunoregulatory factors. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) conducted enrichment analysis to clarify the biological functions of differential expression of immunoregulatory factors. STRING database predicted the interaction network between 234 differently expressed immune regulatory factors. The expression of 11 immunoregulatory factors was significantly related to the overall survival of gastric cancer patients. Univariate Cox regression analysis, Kaplan–Meier analysis and multivariate Cox regression analysis found that immunomodulatory factors were involved in the progression of gastric cancer and promising biomarkers for predicting prognosis. Among them, CXCR4 was related to the low survival of GC patients and a key immunomodulatory factor in GC. Based on TCGA data, the high expression of CXCR4 in GC was positively correlated with the advanced stage and grade of gastric cancer and related to poor prognosis. Univariate analysis and multivariate analysis indicated that CXCR4 was an independent prognostic indicator for TCGA gastric cancer patients. In vitro functional studies had shown that CXCR4 promoted the proliferation, migration, and invasion of gastric cancer cells. In summary, this study has determined the prognostic value of 11 immunomodulatory factors in gastric cancer. CXCR4 is an independent prognostic indicator for gastric cancer patients, which may help to improve the individualized prognostic prediction of GC and provide candidates for the diagnosis and treatment of GC.
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Affiliation(s)
- Shuai Xue
- Endoscopy Center, Minhang Hospital, Fudan University, Shanghai, China
| | - Ming Ma
- Department of Gastroenterology, Minhang Hospital, Fudan University, Shanghai, China
| | - Songhua Bei
- Endoscopy Center, Minhang Hospital, Fudan University, Shanghai, China
| | - Fan Li
- Endoscopy Center, Minhang Hospital, Fudan University, Shanghai, China
| | - Chenqu Wu
- Endoscopy Center, Minhang Hospital, Fudan University, Shanghai, China
| | - Huanqing Li
- Endoscopy Center, Minhang Hospital, Fudan University, Shanghai, China
| | - Yanling Hu
- Institute of Fudan Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Xiaohong Zhang
- Endoscopy Center, Minhang Hospital, Fudan University, Shanghai, China
| | - YanQing Qian
- Endoscopy Center, Minhang Hospital, Fudan University, Shanghai, China
| | - Zhe Qin
- Endoscopy Center, Minhang Hospital, Fudan University, Shanghai, China
| | - Jun Jiang
- Endoscopy Center, Minhang Hospital, Fudan University, Shanghai, China
| | - Li Feng
- Endoscopy Center, Minhang Hospital, Fudan University, Shanghai, China
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3
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Lee SA, Lee KH, Kim H, Cho JY. METTL8 mRNA Methyltransferase Enhances Cancer Cell Migration via Direct Binding to ARID1A. Int J Mol Sci 2021; 22:ijms22115432. [PMID: 34063990 PMCID: PMC8196784 DOI: 10.3390/ijms22115432] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/16/2021] [Accepted: 05/19/2021] [Indexed: 12/24/2022] Open
Abstract
The association of RNA modification in cancer has recently been highlighted. Methyltransferase like 8 (METTL8) is an enzyme and its role in mRNA m3C modification has barely been studied. In this study, we found that METTL8 expression was significantly up-regulated in canine mammary tumor and investigated its functional roles in the tumor process, including cancer cell proliferation and migration. METTL8 expression was up-regulated in most human breast cancer cell lines tested and decreased by Yin Yang 1 (YY1) transcription factor knockdown, suggesting that YY1 is a regulating transcription factor. The knockdown of METTL8 attenuated tumor cell growth and strongly blocked tumor cell migration. AT-rich interactive domain-containing protein 1A (ARID1A) was identified as a candidate mRNA by METTL8. ARID1A mRNA binds to METTL8 protein. ARID1A mRNA expression was not changed by METTL8 knockdown, but ARID1A protein level was significantly increased. Collectively, our study indicates that METTL8 up-regulated by YY1 in breast cancer plays an important role in cancer cell migration through the mRNA modification of ARID1A, resulting in the attenuation of its translation.
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Affiliation(s)
| | | | | | - Je-Yoel Cho
- Correspondence: ; Tel.: +82-02-880-1268; Fax: +82-02-886-1268
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4
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Wang X, Cao Y, BoPan B, Meng Q, Yu Y. High BASP1 Expression is Associated with Poor Prognosis and Promotes Tumor Progression in Human Lung Adenocarcinoma. Cancer Invest 2021; 39:409-422. [PMID: 33813994 DOI: 10.1080/07357907.2021.1910290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BASP1 is involved in signal transduction and cytoskeleton formation and plays a tumor-promoting or tumor-suppressing role in cancers. We found BASP1 was overexpressed in lung adenocarcinoma tissues and promoted the proliferation and migration of lung adenocarcinoma cells. The mechanism may be related to inhibition of cell apoptosis and abnormal activation of the Wnt/β-catenin pathway and epithelial-mesenchymal transformation. BASP1 is associated with poor prognosis in lung adenocarcinoma.
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Affiliation(s)
- Xin Wang
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, P. R. China
| | - Yingyue Cao
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, P. R. China
| | - Bo BoPan
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, P. R. China
| | - Qingwei Meng
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, P. R. China
| | - Yan Yu
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, P. R. China
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5
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Xin W, Zhao C, Jiang L, Pei D, Zhao L, Zhang C. Identification of a Novel Epithelial-Mesenchymal Transition Gene Signature Predicting Survival in Patients With HNSCC. Pathol Oncol Res 2021; 27:585192. [PMID: 34257533 PMCID: PMC8262154 DOI: 10.3389/pore.2021.585192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 02/15/2021] [Indexed: 12/26/2022]
Abstract
Head and neck squamous cell cancer (HNSCC) is one of the most common types of cancer worldwide. There have been many reports suggesting that biomarkers explored via database mining plays a critical role in predicting HNSCC prognosis. However, a single biomarker for prognostic analysis is not adequate. Additionally, there is growing evidence indicating that gene signature could be a better choice for HNSCC prognosis. We performed a comprehensive analysis of mRNA expression profiles using clinical information of HNSCC patients from The Cancer Genome Atlas (TCGA). Gene Set Enrichment Analysis (GSEA) was performed, and we found that a set of genes involved in epithelial mesenchymal transition (EMT) contributed to HNSCC. Cox proportional regression model was used to identify a four-gene (WIPF1, PPIB, BASP1, PLOD2) signature that were significantly associated with overall survival (OS), and all the four genes were significantly upregulated in tumor tissues. We successfully classified the patients with HNSCC into high-risk and low-risk groups, where in high-risk indicated poorer patient prognosis, indicating that this gene signature might be a novel potential biomarker for the prognosis of HNSCC. The prognostic ability of the gene signature was further validated in an independent cohort from the Gene Expression Omnibus (GEO) database. In conclusion, we identified a four-EMT-based gene signature which provides the potentiality to serve as novel independent biomarkers for predicting survival in HNSCC patients, as well as a new possibility for individualized treatment of HNSCC.
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Affiliation(s)
- Wei Xin
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China.,Liaoning Key Laboratory of Molecular Targeted Anti-tumor Drug Development and Evaluation China Medical University, Shenyang, China
| | - Chaoran Zhao
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China.,Liaoning Key Laboratory of Molecular Targeted Anti-tumor Drug Development and Evaluation China Medical University, Shenyang, China
| | - Longyang Jiang
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China.,Liaoning Key Laboratory of Molecular Targeted Anti-tumor Drug Development and Evaluation China Medical University, Shenyang, China
| | - Dongmei Pei
- Department of Family Medicine, Shengjing Hospital, China Medical University, Shenyang, China
| | - Lin Zhao
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China.,Liaoning Key Laboratory of Molecular Targeted Anti-tumor Drug Development and Evaluation China Medical University, Shenyang, China
| | - Chengpu Zhang
- Department of Family Medicine, Shengjing Hospital, China Medical University, Shenyang, China
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6
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Bansal R, Khan MM, Dasari S, Verma I, Goodlett DR, Manes NP, Nita-Lazar A, Sharma SP, Kumar A, Singh N, Chakraborti A, Gupta V, Dogra MR, Ram J, Gupta A. Proteomic profile of vitreous in patients with tubercular uveitis. Tuberculosis (Edinb) 2021; 126:102036. [PMID: 33359883 PMCID: PMC11005023 DOI: 10.1016/j.tube.2020.102036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 10/31/2020] [Accepted: 11/29/2020] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To elucidate disease-specific host protein profile in vitreous fluid of patients with intraocular inflammation due to tubercular uveitis (TBU). METHODS Vitreous samples from 13 patients with TBU (group A), 7 with non-TBU (group B) and 9 with no uveitis (group C) were analysed by shotgun proteomics using Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS). Differentially expressed proteins (DEPs) were subjected to pathway analysis using WEB-based Gene SeT Analysis Toolkit software. RESULTS Compared to control groups (B + C combined), group A (TBU) displayed 32 (11 upregulated, 21 downregulated) DEPs, which revealed an upregulation of coagulation cascades, complement and classic pathways, and downregulation of metabolism of carbohydrates, gluconeogenesis, glucose metabolism and glycolysis/gluconeogenesis pathways. When compared to group B (non-TBU) alone, TBU displayed 58 DEPs (21 upregulated, 37 downregulated), with an upregulation of apoptosis, KRAS signaling, diabetes pathways, classic pathways, and downregulation of MTORC1 signaling, glycolysis/gluconeogenesis, and glucose metabolism. CONCLUSION This differential protein profile provides novel insights into the molecular mechanisms of TBU and a baseline to explore vitreous biomarkers to differentiate TBU from non-TBU, warranting future studies to identify and validate them as a diagnostic tool in TBU. The enriched pathways generate interesting hypotheses and drive further research.
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Affiliation(s)
- Reema Bansal
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
| | - Mohd M Khan
- University of Maryland, School of Medicine, Baltimore, MD, USA; Laboratory of Immune System Biology (LISB), National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD, USA.
| | - Surendra Dasari
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA.
| | - Indu Verma
- Department of Biochemistry, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
| | | | - Nathan P Manes
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.
| | - Aleksandra Nita-Lazar
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.
| | - Surya P Sharma
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
| | - Aman Kumar
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
| | - Nirbhai Singh
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
| | - Anuradha Chakraborti
- Department of Experimental Medicine & Biotechnology, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
| | - Vishali Gupta
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
| | - M R Dogra
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
| | - Jagat Ram
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
| | - Amod Gupta
- Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
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7
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BASP1 Suppresses Cell Growth and Metastasis through Inhibiting Wnt/ β-Catenin Pathway in Gastric Cancer. BIOMED RESEARCH INTERNATIONAL 2020; 2020:8628695. [PMID: 33426068 PMCID: PMC7775134 DOI: 10.1155/2020/8628695] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 11/27/2020] [Accepted: 12/08/2020] [Indexed: 02/06/2023]
Abstract
Objective Our research is designed to explore the function of brain acid soluble protein 1 (BASP1) in the progression of gastric cancer (GC) and its underlying molecular mechanisms. Methods In this study, the expression of BASP1 was detected by quantitative real-time polymerase chain reaction (qRT-PCR) in both GC tissue and GC cells. The cell cloning, proliferation, apoptosis, migration, and invasion potential of AGS and HGC-27 cells were, respectively, determined using colony formation assay, 5-ethynyl-20-deoxyuridine (EDU) assay, flow cytometry, and Transwell assay. The protein expressions of Bax, caspase-3, Bcl-2, matrix metalloproteinases 2 (MMP-2), MMP-9, Wilms tumor 1 (WT1), Wnt, and β-catenin in AGS and HGC-27 cells were measured by western blot. In addition, the mRNA expressions of WT1, Wnt, and β-catenin in AGS and HGC-27 cells were detected by qRT-PCR. Results BASP1 expression was significantly downregulated in both GC tissue and GC cells. BASP1 overexpression markedly repressed proliferation, migration, and invasion and facilitated apoptosis in AGS and HGC-27 cells. In addition, BASP1 overexpression notably promoted the protein expression of Bax and caspase-3 in AGS and HGC-27 cells and inhibited the expression of Bcl-2, MMP-2, and MMP-9. Moreover, BASP1 overexpression significantly inhibited the mRNA and protein expression of WT1, Wnt, and β-catenin in AGS and HGC-27 cells. Conclusion BASP1 could significantly suppress cell proliferation, migration, and invasion and promote apoptosis through inhibiting the activation of the Wnt/β-catenin pathway in GC.
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8
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Jaikumarr Ram A, Girija As S, Jayaseelan VP, Arumugam P. Overexpression of BASP1 Indicates a Poor Prognosis in Head and Neck Squamous Cell Carcinoma. Asian Pac J Cancer Prev 2020; 21:3435-3439. [PMID: 33247706 PMCID: PMC8033119 DOI: 10.31557/apjcp.2020.21.11.3435] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Indexed: 01/04/2023] Open
Abstract
Objective: Brain abundant membrane attached signal protein 1 (BASP1) was originally identified as a membrane and cytoplasmic protein. Recent studies have shown that BASP1 highly expressed in cancer and promoted the proliferation of cancer. However, the role of BASP1 in head and neck squamous cell carcinoma (HNSCC) is largely unknown. Here, we performed a systematic data analysis to examine whether BASP1 can function as prognostic marker in HNSCC. Methods: In this study, we used Oncomine, and UALCAN, databases to analyze the expression of BASP1 in HNSCC. We used Kaplan-Meier plotter to evaluate the effect of BASP1 on clinical prognosis. In addition, we also analyzed genetic alterations, interaction network, and functional enrichment of BASP1. Results: BASP1 mRNA expression level was remarkably increased in HNSCC than in normal tissues (P=1.624e-12). Moreover, high BASP1 expression was significantly related to poor survival (p=0.00056) in HNSCC patients. In addition, BASP1 gene amplified in 5% of HNSCC patients which contributes to the overexpression of BASP1. Conclusions: These findings suggest that BASP1 was frequently amplified which contributes to the overexpression of BASP1, thereby promoting HNSCC progression. Thus, these results indicate that BASP1 might serve as a biomarker to predict the progression and prognosis of HNSCC patients.
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Affiliation(s)
- Ashwin Jaikumarr Ram
- Department of Microbiology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Smiline Girija As
- Department of Microbiology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | | | - Paramasivam Arumugam
- BRULAC-DRC, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
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9
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Wei N, Song Y, Zhang F, Sun Z, Zhang X. Transcriptome Profiling of Acquired Gefitinib Resistant Lung Cancer Cells Reveals Dramatically Changed Transcription Programs and New Treatment Targets. Front Oncol 2020; 10:1424. [PMID: 32923394 PMCID: PMC7456826 DOI: 10.3389/fonc.2020.01424] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 07/06/2020] [Indexed: 01/24/2023] Open
Abstract
Background: Targeted therapy for lung cancer with epidermal growth factor receptor (EGFR) mutations with tyrosine kinase inhibitors (TKIs) represents one of the major breakthroughs in lung cancer management. However, gradually developed resistance to these drugs prevents sustained clinical benefits and calls for resistant mechanism research and identification of new therapeutic targets. Acquired T790M mutation accounts for the majority of resistance cases, yet transcriptome changes in these cells are less characterized, and it is not known if new treatment targets exist by available drugs. Methods: Transcriptome profiling was performed for lung cancer cell line PC9 and its resistant line PC9GR after long-term exposure to gefitinib through RNA sequencing. Differentially expressed genes and changed pathways were identified along with existing drugs targeting these upregulated genes. Using 144 lung cancer cell lines with both gene expression and drug response data from the cancer cell line encyclopedia (CCLE) and Cancer Therapeutics Response Portal (CTRP), we screened 549 drugs whose response was correlated with these upregulated genes in PC9GR cells, and top drugs were evaluated for their response in both PC9 and PC9GR cells. Results: In addition to the acquired T790M mutation, the resistant PC9GR cells had very different transcription programs from the sensitive PC9 cells. Multiple pathways were changed with the top ones including TNFA signaling, androgen/estrogen response, P53 pathway, MTORC1 signaling, hypoxia, and epithelial mesenchymal transition. Thirty-two upregulated genes had available drugs that can potentially be effective in treating the resistant cells. From the response profiles of CCLE, we found 17 drugs whose responses were associated with at least four of these upregulated genes. Among the four drugs evaluated (dasatinib, KPT-185, trametinib, and pluripotin), all except trametinib demonstrated strong inhibitory effects on the resistant PC9GR cells, among which KPT185 was the most potent. KPT-185 suppressed growth, caused apoptosis, and inhibited migration of the PC9GR cells at similar (or better) rates as the sensitive PC9 cells in a dose-dependent manner. Conclusions: Acquired TKI-resistant lung cancer cells (PC9GR) have dramatically changed transcription and pathway regulation, which expose new treatment targets. Existing drugs may be repurposed to treat those patients with developed resistance to TKIs.
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Affiliation(s)
- Nan Wei
- Department of Respiratory and Critical Care Medicine, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, China.,Academy of Medical Science, Zhengzhou University, Zhengzhou, China
| | - Yong'an Song
- Department of Respiratory and Critical Care Medicine, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, China.,Academy of Medical Science, Zhengzhou University, Zhengzhou, China
| | - Fan Zhang
- Department of Respiratory and Critical Care Medicine, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, China
| | - Zhifu Sun
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, United States
| | - Xiaoju Zhang
- Department of Respiratory and Critical Care Medicine, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, China
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Hartl M, Puglisi K, Nist A, Raffeiner P, Bister K. The brain acid-soluble protein 1 (BASP1) interferes with the oncogenic capacity of MYC and its binding to calmodulin. Mol Oncol 2020; 14:625-644. [PMID: 31944520 PMCID: PMC7053243 DOI: 10.1002/1878-0261.12636] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 12/16/2019] [Accepted: 01/09/2020] [Indexed: 12/13/2022] Open
Abstract
The MYC protein is a transcription factor with oncogenic potential controlling fundamental cellular processes such as cell proliferation, metabolism, differentiation, and apoptosis. The MYC gene is a major cancer driver, and elevated MYC protein levels are a hallmark of most human cancers. We have previously shown that the brain acid-soluble protein 1 gene (BASP1) is specifically downregulated by the v-myc oncogene and that ectopic BASP1 expression inhibits v-myc-induced cell transformation. The 11-amino acid effector domain of the BASP1 protein interacts with the calcium sensor calmodulin (CaM) and is mainly responsible for this inhibitory function. We also reported recently that CaM interacts with all MYC variant proteins and that ectopic CaM increases the transactivation and transformation potential of the v-Myc protein. Here, we show that the presence of excess BASP1 or of a synthetic BASP1 effector domain peptide leads to displacement of v-Myc from CaM. The protein stability of v-Myc is decreased in cells co-expressing v-Myc and BASP1, which may account for the inhibition of v-Myc. Furthermore, suppression of v-Myc-triggered transcriptional activation and cell transformation is compensated by ectopic CaM, suggesting that BASP1-mediated withdrawal of CaM from v-Myc is a crucial event in the inhibition. In view of the tumor-suppressive role of BASP1 which was recently also reported for human cancer, small compounds or peptides based on the BASP1 effector domain could be used in drug development strategies aimed at tumors with high MYC expression.
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Affiliation(s)
- Markus Hartl
- Institute of Biochemistry and Center for Molecular Biosciences (CMBI), University of Innsbruck, Austria
| | - Kane Puglisi
- Institute of Biochemistry and Center for Molecular Biosciences (CMBI), University of Innsbruck, Austria
| | - Andrea Nist
- Institute of Biochemistry and Center for Molecular Biosciences (CMBI), University of Innsbruck, Austria
| | - Philipp Raffeiner
- Institute of Biochemistry and Center for Molecular Biosciences (CMBI), University of Innsbruck, Austria
| | - Klaus Bister
- Institute of Biochemistry and Center for Molecular Biosciences (CMBI), University of Innsbruck, Austria
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11
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LINC00473 inhibits vascular smooth muscle cell viability to promote aneurysm formation via miR-212-5p/BASP1 axis. Eur J Pharmacol 2020; 873:172935. [PMID: 31954705 DOI: 10.1016/j.ejphar.2020.172935] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 12/15/2019] [Accepted: 01/13/2020] [Indexed: 12/19/2022]
Abstract
Abdominal aortic aneurysm (AAA), as the most common type of aortic aneurysm, is closely related to the proliferation and apoptosis ability of vascular smooth muscle cells (VSMCs). Long non-coding RNAs (lncRNAs) are emerging regulators in disease development. LncRNA LINC00473 has been shown to affect cell proliferation and apoptosis in various cancers, but its role in AAA is still blank. In this work, in vitro AAA models were successfully established since cell viability was inhibited whereas apoptosis stimulated in VSMCs treated with H2O2. LINC00473 was up-regulated in VSMCs after H2O2 treatment. Overexpression of LINC00473 inhibited VSMC cell proliferation and promoted cell apoptosis and its silence mitigated H2O2-induced injuries to VSMCs. Additionally, we uncovered that LINC00473 sponged miR-212-5p to regulate brain acid soluble protein 1 (BASP1) expression. Finally, rescue assays uncovered that overexpression of miR-212-5p or suppression of BASP1 reversed the effects of LINC00473 up-regulation on cell proliferation and cell apoptosis. And the positive correlation between LINC00473 and BASP1 as well as the negative relation of miR-212-5p to both LINC00473 and BASP1 were confirmed in AAA tissues. All finding illuminated that LINC00473 participated in AAA development by regulating miR-212-5p/BASP1 pathway, suggesting LINC00473 as a promising target for AAA therapy.
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12
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Hartl M, Schneider R. A Unique Family of Neuronal Signaling Proteins Implicated in Oncogenesis and Tumor Suppression. Front Oncol 2019; 9:289. [PMID: 31058089 PMCID: PMC6478813 DOI: 10.3389/fonc.2019.00289] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 03/29/2019] [Indexed: 12/20/2022] Open
Abstract
The neuronal proteins GAP43 (neuromodulin), MARCKS, and BASP1 are highly expressed in the growth cones of nerve cells where they are involved in signal transmission and cytoskeleton organization. Although their primary structures are unrelated, these signaling proteins share several structural properties like fatty acid modification, and the presence of cationic effector domains. GAP43, MARCKS, and BASP1 bind to cell membrane phospholipids, a process reversibly regulated by protein kinase C-phosphorylation or by binding to the calcium sensor calmodulin (CaM). GAP43, MARCKS, and BASP1 are also expressed in non-neuronal cells, where they may have important functions to manage cytoskeleton architecture, and in case of MARCKS and BASP1 to act as cofactors in transcriptional regulation. During neoplastic cell transformation, the proteins reveal differential expression in normal vs. tumor cells, and display intrinsic tumor promoting or tumor suppressive activities. Whereas GAP43 and MARCKS are oncogenic, tumor suppressive functions have been ascribed to BASP1 and in part to MARCKS depending on the cell type. Like MARCKS, the myristoylated BASP1 protein is localized both in the cytoplasm and in the cell nucleus. Nuclear BASP1 participates in gene regulation converting the Wilms tumor transcription factor WT1 from an oncoprotein into a tumor suppressor. The BASP1 gene is downregulated in many human tumor cell lines particularly in those derived from leukemias, which display elevated levels of WT1 and of the major cancer driver MYC. BASP1 specifically inhibits MYC-induced cell transformation in cultured cells. The tumor suppressive functions of BASP1 and MARCKS could be exploited to expand the spectrum of future innovative therapeutic approaches to inhibit growth and viability of susceptible human tumors.
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Affiliation(s)
- Markus Hartl
- Center of Molecular Biosciences (CMBI), Institute of Biochemistry, University of Innsbruck, Innsbruck, Austria
| | - Rainer Schneider
- Center of Molecular Biosciences (CMBI), Institute of Biochemistry, University of Innsbruck, Innsbruck, Austria
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Perovic V, Sumonja N, Marsh LA, Radovanovic S, Vukicevic M, Roberts SGE, Veljkovic N. IDPpi: Protein-Protein Interaction Analyses of Human Intrinsically Disordered Proteins. Sci Rep 2018; 8:10563. [PMID: 30002402 PMCID: PMC6043496 DOI: 10.1038/s41598-018-28815-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Accepted: 06/28/2018] [Indexed: 01/04/2023] Open
Abstract
Intrinsically disordered proteins (IDPs) are characterized by the lack of a fixed tertiary structure and are involved in the regulation of key biological processes via binding to multiple protein partners. IDPs are malleable, adapting to structurally different partners, and this flexibility stems from features encoded in the primary structure. The assumption that universal sequence information will facilitate coverage of the sparse zones of the human interactome motivated us to explore the possibility of predicting protein-protein interactions (PPIs) that involve IDPs based on sequence characteristics. We developed a method that relies on features of the interacting and non-interacting protein pairs and utilizes machine learning to classify and predict IDP PPIs. Consideration of both sequence determinants specific for conformational organizations and the multiplicity of IDP interactions in the training phase ensured a reliable approach that is superior to current state-of-the-art methods. By applying a strict evaluation procedure, we confirm that our method predicts interactions of the IDP of interest even on the proteome-scale. This service is provided as a web tool to expedite the discovery of new interactions and IDP functions with enhanced efficiency.
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Affiliation(s)
- Vladimir Perovic
- Centre for Multidisciplinary Research and Engineering, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - Neven Sumonja
- Centre for Multidisciplinary Research and Engineering, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - Lindsey A Marsh
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Sandro Radovanovic
- Centre for business decision making, Faculty of organizational Sciences, University of Belgrade, Belgrade, Serbia
| | - Milan Vukicevic
- Centre for business decision making, Faculty of organizational Sciences, University of Belgrade, Belgrade, Serbia
| | - Stefan G E Roberts
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Nevena Veljkovic
- Centre for Multidisciplinary Research and Engineering, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia.
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Methylation-associated silencing of BASP1 contributes to leukemogenesis in t(8;21) acute myeloid leukemia. Exp Mol Med 2018; 50:1-8. [PMID: 29674693 PMCID: PMC5938046 DOI: 10.1038/s12276-018-0067-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 12/06/2017] [Accepted: 01/02/2018] [Indexed: 12/20/2022] Open
Abstract
The AML1-ETO fusion protein (A/E), which results from the t(8;21) translocation, is considered to be a leukemia-initiating event. Identifying the mechanisms underlying the oncogenic activity of A/E remains a major challenge. In this study, we identified a specific down-regulation of brain acid-soluble protein 1 (BASP1) in t(8;21) acute myeloid leukemia (AML). A/E recognized AML1-binding sites and recruited DNA methyltransferase 3a (DNMT3a) to the BASP1 promoter sequence, which triggered DNA methylation-mediated silencing of BASP1. Ectopic expression of BASP1 inhibited proliferation and the colony-forming ability of A/E-positive AML cell lines and led to apoptosis and cell cycle arrest. The DNMT inhibitor decitabine up-regulated the expression of BASP1 in A/E-positive AML cell lines. In conclusion, our data suggest that BASP1 silencing via promoter methylation may be involved in A/E-mediated leukemogenesis and that BASP1 targeting may be an actionable therapeutic strategy in t(8;21) AML. A chromosomal rearrangement commonly observed in certain leukemias selectively inactivates a gene that otherwise thwarts cancerous growth. Between 7 and 12% of acute myeloid leukemia cases exhibit a dramatic alteration in chromosomal structure that results in the production of an abnormal fusion protein. Researchers led by Li Yu at the General Hospital of Shenzen University in China have learned that this protein promotes disease progression by switching off an important tumor suppressor. Yu and colleagues showed that it binds a genomic sequence that regulates the gene encoding a second protein called BASP1, dramatically reducing its production. This gene silencing facilitates tumor growth. Chemicals that reactivated BASP1 production slowed proliferation and initiated ‘self-destruct’ mechanisms in leukemia cells. These findings suggest that BASP1-oriented therapies could offer a fruitful avenue of treatment for some patients.
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BASP1 interacts with oestrogen receptor α and modifies the tamoxifen response. Cell Death Dis 2017; 8:e2771. [PMID: 28492543 PMCID: PMC5520704 DOI: 10.1038/cddis.2017.179] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 03/14/2017] [Accepted: 03/15/2017] [Indexed: 01/01/2023]
Abstract
Tamoxifen binds to oestrogen receptor α (ERα) to elicit distinct responses that vary by cell/tissue type and status, but the factors that determine these differential effects are unknown. Here we report that the transcriptional corepressor BASP1 interacts with ERα and in breast cancer cells, this interaction is enhanced by tamoxifen. We find that BASP1 acts as a major selectivity factor in the transcriptional response of breast cancer cells to tamoxifen. In all, 40% of the genes that are regulated by tamoxifen in breast cancer cells are BASP1 dependent, including several genes that are associated with tamoxifen resistance. BASP1 elicits tumour-suppressor activity in breast cancer cells and enhances the antitumourigenic effects of tamoxifen treatment. Moreover, BASP1 is expressed in breast cancer tissue and is associated with increased patient survival. Our data have identified BASP1 as an ERα cofactor that has a central role in the transcriptional and antitumourigenic effects of tamoxifen.
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