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Huyan Y, Chen X, Chang Y, Hua X, Fan X, Shan D, Xu Z, Tao M, Zhang H, Liu S, Song J. Single-Cell Transcriptomic Analysis Reveals Myocardial Fibrosis Mechanism of Doxorubicin-Induced Cardiotoxicity. Int Heart J 2024; 65:487-497. [PMID: 38749755 DOI: 10.1536/ihj.23-302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
Myocardial fibrosis is a pathological feature of doxorubicin-induced chronic cardiotoxicity that severely affects the prognosis of oncology patients. However, the specific cellular and molecular mediators driving doxorubicin-induced cardiac fibrosis, and the relative impact of different cell populations on cardiac fibrosis, remain unclear.This study aimed to explore the mechanism of doxorubicin-induced cardiotoxicity and myocardial fibrosis and to find potential therapeutic targets. Single-cell RNA sequencing was used to analyze the transcriptome of non-cardiomyocytes from normal and doxorubicin-induced chronic cardiotoxicity in mouse model heart tissue.We established a mouse model of doxorubicin-induced cardiotoxicity with a well-defined fibrotic phenotype. Analysis of single-cell sequencing results showed that fibroblasts were the major origin of extracellular matrix in doxorubicin-induced myocardial fibrosis. Further resolution of fibroblast subclusters showed that resting fibroblasts were converted to matrifibrocytes and then to myofibroblasts to participate in the myocardial remodeling process in response to doxorubicin treatment. Ctsb expression was significantly upregulated in fibroblasts after doxorubicin-induced.This study provides a comprehensive map of the non-cardiomyocyte landscape at high resolution, reveals multiple cell populations contributing to pathological remodeling of the cardiac extracellular matrix, and identifies major cellular sources of myofibroblasts and dynamic gene-expression changes in fibroblast activation. Finally, we used this strategy to detect potential therapeutic targets and identified Ctsb as a specific target for fibroblasts in doxorubicin-induced myocardial fibrosis.
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Affiliation(s)
- Yige Huyan
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Xiao Chen
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Yuan Chang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Xiumeng Hua
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Xuexin Fan
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Dan Shan
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Zhenyu Xu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Menghao Tao
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Hang Zhang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Sheng Liu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Jiangping Song
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College
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Liu Y, Xu W, Li M, Yang Y, Sun D, Chen L, Li H, Chen L. The regulatory mechanisms and inhibitors of isocitrate dehydrogenase 1 in cancer. Acta Pharm Sin B 2023; 13:1438-1466. [PMID: 37139412 PMCID: PMC10149907 DOI: 10.1016/j.apsb.2022.12.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/07/2022] [Accepted: 11/18/2022] [Indexed: 02/04/2023] Open
Abstract
Reprogramming of energy metabolism is one of the basic characteristics of cancer and has been proved to be an important cancer treatment strategy. Isocitrate dehydrogenases (IDHs) are a class of key proteins in energy metabolism, including IDH1, IDH2, and IDH3, which are involved in the oxidative decarboxylation of isocitrate to yield α-ketoglutarate (α-KG). Mutants of IDH1 or IDH2 can produce d-2-hydroxyglutarate (D-2HG) with α-KG as the substrate, and then mediate the occurrence and development of cancer. At present, no IDH3 mutation has been reported. The results of pan-cancer research showed that IDH1 has a higher mutation frequency and involves more cancer types than IDH2, implying IDH1 as a promising anti-cancer target. Therefore, in this review, we summarized the regulatory mechanisms of IDH1 on cancer from four aspects: metabolic reprogramming, epigenetics, immune microenvironment, and phenotypic changes, which will provide guidance for the understanding of IDH1 and exploring leading-edge targeted treatment strategies. In addition, we also reviewed available IDH1 inhibitors so far. The detailed clinical trial results and diverse structures of preclinical candidates illustrated here will provide a deep insight into the research for the treatment of IDH1-related cancers.
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Ni Y, Shen P, Wang X, Liu H, Luo H, Han X. The roles of IDH1 in tumor metabolism and immunity. Future Oncol 2022; 18:3941-3953. [PMID: 36621781 DOI: 10.2217/fon-2022-0583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
IDH1 is a key metabolic enzyme for cellular respiration in the tricarboxylic acid (TCA) cycle that can convert isocitrate into α-ketoglutarate (α-KG) and generate NADPH. The reduction of IDH1 may affect dioxygenase activity and damage the body's detoxification mechanism. Many studies have shown that IDH1 is closely related to the occurrence and development of tumors, and the changes in IDH1 expression levels or gene mutations have appeared in many tumor tissues and produced a series of metabolic and immunity changes at the same time. To better understand the relationship between IDH1 and tumor development, this article reviews the latest advances in IDH1 and tumor metabolism, tumor immunity, IDH1 regulatory mechanisms and IDH1 target inhibitors.
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Affiliation(s)
- Yingqian Ni
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, China
| | - Peibo Shen
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, China
| | - Xingchen Wang
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, China
| | - He Liu
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, China
| | - Huiyuan Luo
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, China
| | - Xiuzhen Han
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, China.,Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Science, Shandong University, China.,Shandong Cancer Hospital and Institute, 440 Jiyan Road, Jinan, 250117, Shandong Province, China
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LncRNA H19 inhibits ER stress induced apoptosis and improves diabetic cardiomyopathy by regulating PI3K/AKT/mTOR axis. Aging (Albany NY) 2022; 14:6809-6828. [PMID: 36044268 PMCID: PMC9467416 DOI: 10.18632/aging.204256] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 08/17/2022] [Indexed: 02/06/2023]
Abstract
Objective: Extensive studies have shown that ERS may be implicated in the pathogenesis of DCM. We explored the therapeutic effects of lncRNAH19 on DCM and its effect on ERS-associated cardiomyocyte apoptosis. Methods: C57/BL-6j mice were randomly divided into 3 groups: non-DM group (controls), DM group (DCM), and lncRNAH19 overexpression group (DCM+H19 group). The effect of H19 on cardiac function was detected. The effect of H19 on cardiomyocyte apoptosis and cardiac fibrosis in DM was examined. Differentially expressed genes (DEGs) and activated pathways were examined by bioinformatics analysis. STRING database was applied to construct a PPI network using Cytoscape software. The expression of p-PERK, p-IRE1, ATF6, CHOP, cleaved caspase-3, -9, -12 and BAX proteins in cardiac tissue was used to determine the ERS-associated apoptotic indicators. We established the HG-stimulated inflammatory cell model. The expression of p-PERK and CHOP in HL-1 cells following HG was determined by immunofluorescence labeling. The effects of H19 on ERS and PI3K/AKT/mTOR pathway were also detected. Results: H19 improved left ventricular dysfunction in DM. H19 could reduce cardiomyocytes apoptosis and improve fibrosis in vivo. H19 could reduce the expression of p-PERK, p-IRE1α, ATF6, CHOP, cleaved caspase-3, cleaved caspase-9, cleaved caspase-12, and BAX proteins in cardiac tissues. Furthermore, H19 repressed oxidative stress, ERS and apoptosis in vitro. Moreover, the effect of H19 on ERS-associated apoptosis might be rescued by LY294002 (the specific inhibitor for PI3K and AKT). Conclusion: H19 attenuates DCM in DM and ROS, ERS-induced cardiomyocyte apoptosis, which is associated with the activation of PI3K/AKT/mTOR signaling pathway.
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Yu X, Xu X, Dong W, Yang C, Luo Y, He Y, Jiang C, Wu Y, Wang J. DDIT3/CHOP mediates the inhibitory effect of ER stress on chondrocyte differentiation by AMPKα-SIRT1 pathway. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2022; 1869:119265. [PMID: 35381294 DOI: 10.1016/j.bbamcr.2022.119265] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 03/26/2022] [Accepted: 03/30/2022] [Indexed: 06/14/2023]
Abstract
Endoplasmic reticulum (ER) stress is an evolutionarily conserved cellular stress response related to multiple diseases, including temporomandibular joint (TMJ) cartilage-related diseases. Recent studies have indicated that DDIT3/CHOP (a downstream transcription factor of ER stress) is an important effector in mediating ER stress to inhibit chondrogenesis. However, the underlying mechanism by which DDIT3 regulates chondrogenesis remains unclear. In this study, tunicamycin (an ER stress agonist)-induced ER stress inhibited chondrocyte differentiation and matrix synthesis in vitro and led to an osteoarthritis-like phenotype in mouse TMJ cartilage. Meanwhile, DDIT3 expression in chondrocytes was robustly upregulated. Loss-of-function experiments validated the inhibiting effect of DDIT3 on chondrocyte differentiation and matrix synthesis. Mechanistically, the inhibiting effect was attributed to the direct and indirect regulatory effect of DDIT3 on SIRT1 (sirtuin1, silent mating type information regulation protein type 1, a member of NAD+ dependent class III histone deacetylases). On one hand, DDIT3 directly promoted the transcription of SIRT1. On the other hand, DDIT3 indirectly increased the expression of SIRT1 by promoting AMPKα phosphorylation and activation. Furthermore, activation of AMPKα or SIRT1 with the corresponding agonist AICAR or resveratrol in the DDIT3-knockdown cells partially restored the inhibiting effect of DDIT3 on chondrocyte differentiation and matrix synthesis. Collectively, these novel findings indicate that DDIT3 regulates the inhibitory effect of ER stress on chondrocyte differentiation and matrix synthesis partially via the AMPKα-SIRT1 pathway. A thorough understanding of ER stress in regulating chondrocyte homeostasis and its role in the onset of osteoarthritis may be promising to develop therapeutic targets and prevent condyle cartilage destruction.
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Affiliation(s)
- Xijie Yu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Xiaoxiao Xu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Wei Dong
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Chang Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Yao Luo
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Ying He
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Chenxi Jiang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China; Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Yanru Wu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China
| | - Jiawei Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei 430079, China.
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6
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MYC, mitochondrial metabolism and O-GlcNAcylation converge to modulate the activity and subcellular localization of DNA and RNA demethylases. Leukemia 2022; 36:1150-1159. [PMID: 34997181 PMCID: PMC8983447 DOI: 10.1038/s41375-021-01489-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/17/2021] [Accepted: 11/25/2021] [Indexed: 12/31/2022]
Abstract
Mitochondria can function as signaling organelles, and part of this output leads to epigenetic remodeling. The full extent of this far-reaching interplay remains undefined. Here, we show that MYC transcriptionally activates IDH2 and increases alpha-ketoglutarate (αKG) levels. This regulatory step induces the activity of αKG-dependent DNA hydroxylases and RNA demethylases, thus reducing global DNA and RNA methylation. MYC, in a IDH2-dependent manner, also promotes the nuclear accumulation of TET1-TET2-TET3, FTO and ALKBH5. Notably, this subcellular movement correlated with the ability of MYC, in an IDH2-dependent manner, and, unexpectedly, of αKG to directly induce O-GlcNAcylation. Concordantly, modulation of the activity of OGT and OGA, enzymes that control the cycling of this non-canonical mono-glycosylation, largely recapitulated the effects of the MYC-IDH2-αKG axis on the subcellular movement of DNA and RNA demethylases. Together, we uncovered a hitherto unsuspected crosstalk between MYC, αKG and O-GlcNAcylation which could influence the epigenome and epitranscriptome homeostasis.
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Wang T, Lin Q, Zhang Y, Xu Z, Shi D, Cheng Y, Fu Z, Tan H, Cheng D, Shi H. Synthesis and biological evaluation of novel PET tracers [ 18F]AG120 & [ 18F]AG135 for imaging mutant isocitrate dehydrogenase 1 expression. Bioorg Med Chem 2022; 53:116525. [PMID: 34871844 DOI: 10.1016/j.bmc.2021.116525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/04/2021] [Accepted: 11/16/2021] [Indexed: 12/21/2022]
Abstract
Mutations in isocitrate dehydrogenase 1 (IDH1) are commonly found in various human malignancies. Inhibitors of several mutant IDH1 enzymes have entered clinical trials as target therapeutic drugs for the treatment of patients with IDH1 mutations. Herein, we report the synthesis and evaluation of two 18F-labeled tracers, [18F]AG120 and [18F]AG135 for imaging expression of mutated IDH1 in positron emission tomography (PET). [18F]AG120 and [18F]AG135 were synthesized in decay-corrected radiochemical yield of 1 % and 3 %, respectively, high molar activity (52-66 MBq/nmol and 216-339 MBq/nmol, respectively) and high radiochemical purity (>99%). Both tracers showed good in vitro stability, selective uptake into mutated IDH1-expressing cells and good pharmacokinetic profiles with low uptake in most organs/tissues. Furthermore, [18F]AG120 micro-PET/CT imaging displayed significantly greater uptake in IDH1-mutant than in wild-type tumors, Relatively, uptake of [18F]AG135 was observed neither in IDH1-mutant tumor xenografts nor in wild-type tumors. This study suggests that [18F]AG120 is a promising radiotracer for PET imaging of IDH1 mutation, However, further optimization and investigation are necessary for [18F]AG135 due to the limited uptake in mutated IDH1-expressing tumors.
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Affiliation(s)
- Tingting Wang
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No.180 Fenglin Road, Shanghai 200032, China
| | - Qingyu Lin
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No.180 Fenglin Road, Shanghai 200032, China; Institute of Nuclear Medicine, Fudan University, Shanghai, China; Shanghai Institute of Medical Imaging, Shanghai, China
| | - Yingying Zhang
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No.180 Fenglin Road, Shanghai 200032, China
| | - Zhan Xu
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No.180 Fenglin Road, Shanghai 200032, China
| | - Dai Shi
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No.180 Fenglin Road, Shanghai 200032, China
| | - Yuan Cheng
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No.180 Fenglin Road, Shanghai 200032, China
| | - Zhequan Fu
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No.180 Fenglin Road, Shanghai 200032, China
| | - Hui Tan
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No.180 Fenglin Road, Shanghai 200032, China
| | - Dengfeng Cheng
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No.180 Fenglin Road, Shanghai 200032, China; Institute of Nuclear Medicine, Fudan University, Shanghai, China; Shanghai Institute of Medical Imaging, Shanghai, China.
| | - Hongcheng Shi
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No.180 Fenglin Road, Shanghai 200032, China; Institute of Nuclear Medicine, Fudan University, Shanghai, China; Shanghai Institute of Medical Imaging, Shanghai, China.
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Yang C, Xu X, Dong X, Yang B, Dong W, Luo Y, Liu X, Wu Y, Wang J. DDIT3/CHOP promotes autophagy in chondrocytes via SIRT1-AKT pathway. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2021; 1868:119074. [PMID: 34087318 DOI: 10.1016/j.bbamcr.2021.119074] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 05/09/2021] [Accepted: 05/27/2021] [Indexed: 01/18/2023]
Abstract
Endoplasmic reticulum (ER) stress can initiate autophagy via unfolded protein response (UPR). As a key downstream gene of UPR, DDIT3/CHOP is expressed in chondrocytes. However, the regulation mechanism of DDIT3/CHOP on autophagy in chondrocytes remains unclear. In this study, the expression levels of autophagic markers Beclin1 and LC3B were found to decrease while p62 increase in the tibial growth plate and costal primary chondrocytes from DDIT3/CHOP KO mice. In vitro, overexpressing DDIT3/CHOP induced autophagy in ATDC5 chondrocytes, displaying an elevated immunofluorescence signal of LC3B and elevated numbers of autophagosomes and autolysosomes. Analysis of the gain- and loss-of-function indicated that the protein level of Beclin1 and the ratio of LC3BII/I increased in DDIT3/CHOP overexpression cells, whereas decreased in DDIT3/CHOP knockdown cells. The decreased level of p62 and additional accumulation of LC3BII caused by chloroquine (CQ) further indicated that DDIT3/CHOP enhanced autophagic flux. Mechanistically, we found that DDIT3/CHOP binds directly to the promoter of SIRT1 to promote its expression by CHIP, qRT-PCR, and Western blot analysis. In addition, SIRT1 enhanced autophagic activity in ATDC5 cells, and inhibition or activation of SIRT1 partially reversed the effect of overexpressing or downregulating DDIT3/CHOP on autophagy. Furthermore, AKT signaling was found to be responsible for DDIT3/CHOP-regulated autophagy in ATDC5 cells. SIRT1 knockdown reversed the effect of DDIT3/CHOP overexpression on AKT signaling. In conclusion, our data clarifies that DDIT3/CHOP promotes autophagy in ATDC5 chondrocytes through the SIRT1-AKT pathway. These results were also confirmed in the primary chondrocytes.
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Affiliation(s)
- Chang Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei, China
| | - Xiaoxiao Xu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei, China
| | - Xiaofei Dong
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei, China
| | - Beining Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei, China
| | - Wei Dong
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei, China
| | - Yao Luo
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei, China
| | - Xiayi Liu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei, China
| | - Yanru Wu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei, China
| | - Jiawei Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei, China.
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Li F, Wen J, Shi J, Wang Y, Yang F, Liu C. MicroRNA-191 targets CCAAT/enhanced binding protein β and functions as an oncogenic molecule in human non-small cell lung carcinoma cells. Exp Ther Med 2019; 18:1175-1183. [PMID: 31316611 PMCID: PMC6601399 DOI: 10.3892/etm.2019.7668] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 10/26/2018] [Indexed: 12/24/2022] Open
Abstract
The aberrant expression of microRNAs (miRs) may be involved in tumor growth and progression in human non-small cell lung carcinoma (NSCLC). The present study aimed to investigate the potential roles of miR-191 in NSCLC. Western blotting and reverse transcription-quantitative polymerase chain reaction were performed to assess protein and/or mRNA levels. Scratch wound healing and transwell assays were performed to determine the NSCLC cell migration and invasion. A luciferase demonstrated that CCAAT/enhanced binding protein β (C/EBPβ) was a target of miR-191. Previously, miR-191 has been reported to act as an oncogenic player in multiple human cancers. C/EBPβ has been identified as a target gene of miR-191; however, the roles and underlying mechanisms of miR-191 associated with the regulation of tumor invasion in NSCLC remain unknown. In the present study, it was demonstrated that miR-191 expression levels were higher in human NSCLC tumors compared with in normal adjacent tissue and elevated miR-191 expression levels were closely associated with tumor node metastasis stage in patients with NSCLC. Furthermore, transfection with miR-191 mimic inhibited C/EBPβ expression at the mRNA and protein levels and promoted A549 cell migration and invasion. C/EBPβ was reported to be the direct target gene of miR-191 using a dual luciferase reporter assay. Finally, C/EBPβ siRNA can mimic the effects of miR-191. These findings indicated that miR-191 may function as an oncogene in NSCLC, at least partially due to its negative regulatory on C/EBPβ.
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Affiliation(s)
- Fuliang Li
- Department of Pathology, Anqiu People's Hospital, Anqiu, Shandong 262100, P.R. China
| | - Jingjing Wen
- Department of Pathology, Weifang Yidu Central Hospital, Weifang, Shandong 262500, P.R. China
| | - Jinsheng Shi
- Department of Pathology, Weifang Yidu Central Hospital, Weifang, Shandong 262500, P.R. China
| | - Yun Wang
- Department of Pathology, Anqiu People's Hospital, Anqiu, Shandong 262100, P.R. China
| | - Feifei Yang
- Department of Pathology, Anqiu People's Hospital, Anqiu, Shandong 262100, P.R. China
| | - Chunying Liu
- Department of B-ultrasound, Anqiu People's Hospital, Anqiu, Shandong 262100, P.R. China
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Bala Bhaskara Rao K, Katragunta K, Sarma UM, Jain N. Abundance of
d
‐2‐hydroxyglutarate in G2/M is determined by FOXM1 in mutant IDH1‐expressing cells. FEBS Lett 2019; 593:2177-2193. [DOI: 10.1002/1873-3468.13500] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/22/2019] [Accepted: 06/07/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Kancharana Bala Bhaskara Rao
- Department of Applied Biology CSIR‐Indian Institute of Chemical Technology Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR) New Delhi India
| | - Kumar Katragunta
- Organic Synthesis and Process Chemistry CSIR‐Indian Institute of Chemical Technology Hyderabad India
| | - Uma Maheswara Sarma
- Organic Synthesis and Process Chemistry CSIR‐Indian Institute of Chemical Technology Hyderabad India
| | - Nishant Jain
- Department of Applied Biology CSIR‐Indian Institute of Chemical Technology Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR) New Delhi India
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Zhang L, Wang Y, Zhang L, Xia X, Chao Y, He R, Han C, Zhao W. ZBTB7A, a miR-663a target gene, protects osteosarcoma from endoplasmic reticulum stress-induced apoptosis by suppressing LncRNA GAS5 expression. Cancer Lett 2019; 448:105-116. [PMID: 30753838 DOI: 10.1016/j.canlet.2019.01.046] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 01/26/2019] [Accepted: 01/29/2019] [Indexed: 01/13/2023]
Abstract
Many studies have uncovered the essential role of ZBTB7A in regulating tumourigenesis. However, its functional significance in cell responses to endoplasmic reticulum stress (ER stress) remains poorly understood. Here we report that ZBTB7A functions as an important prosurvival factor in osteosarcoma cells undergoing pharmacological ER stress-induced by tunicamycin (TM) or thapsigargin (TG). The downregulation of ZBTB7A expression by ER stress promoted cell apoptosis in vitro and in vivo. ZBTB7A expression levels were increased in osteosarcoma tissues and elevated ZBTB7A was associated with osteosarcoma metastasis. Further mechanistic studies revealed that miR-663a induced by ER stress directly bound to the 3'UTR of ZBTB7A and contributed to ER stress-induced ZBTB7A downregulation in osteosarcoma cells. Additionally, our data revealed that ZBTB7A bound to the promoter of LncRNA GAS5 and transcriptionally suppressed LncRNA GAS5 expression, leading to a decline in ER stress-induced cell apoptosis. Collectively, our findings reveal the prosurvival role of ZBTB7A in osteosarcoma adaptation to ER stress and suggest that the miR-663a-ZBTB7A-LncRNAGAS5 pathway is essential for the survival of human osteosarcoma cells under ER stress.
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Affiliation(s)
- Lu Zhang
- The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China
| | - Yuan Wang
- The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China
| | - Li Zhang
- Laboratory of Pathogenic Biology, College of Basic Medical Science, Dalian Medical University, Dalian, 116044, China
| | - Xin Xia
- The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China
| | - Yulin Chao
- The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China
| | - Ruiping He
- The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China
| | - Chuanchun Han
- The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China.
| | - Wenzhi Zhao
- The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China.
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Ma B, Zhang L, Zou Y, He R, Wu Q, Han C, Zhang B. Reciprocal regulation of integrin β4 and KLF4 promotes gliomagenesis through maintaining cancer stem cell traits. J Exp Clin Cancer Res 2019; 38:23. [PMID: 30658712 PMCID: PMC6339386 DOI: 10.1186/s13046-019-1034-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 01/09/2019] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND The dismal prognosis of patients with glioma is largely attributed to cancer stem cells that display pivotal roles in tumour initiation, progression, metastasis, resistance to therapy, and relapse. Therefore, understanding how these populations of cells maintain their stem-like properties is critical in developing effective glioma therapeutics. METHODS RNA sequencing analysis was used to identify genes potentially involved in regulating glioma stem cells (GSCs). Integrin β4 (ITGB4) expression was validated by quantitative real-time PCR (qRT-PCR) and immunohistochemical (IHC) staining. The role of ITGB4 was investigated by flow cytometry, mammosphere formation, transwell, colony formation, and in vivo tumorigenesis assays. The reciprocal regulation between Integrin β4 and KLF4 was investigated by chromatin immunoprecipitation (ChIP), dual-luciferase reporter assay, immunoprecipitation, and in vivo ubiquitylation assays. RESULTS In this study, we found that ITGB4 expression was increased in GSCs and human glioma tissues. Upregulation of ITGB4 was correlated with glioma grades. Inhibition of ITGB4 in glioma cells decreased the self-renewal abilities of GSCs and suppressed the malignant behaviours of glioma cells in vitro and in vivo. Further mechanistic studies revealed that KLF4, an important transcription factor, directly binds to the promoter of ITGB4, facilitating its transcription and contributing to increased ITGB4 expression in glioma. Interestingly, this increased expression enabled ITGB4 to bind KLF4, thus attenuating its interaction with its E3 ligase, the von Hippel-Lindau (VHL) protein, which subsequently decreases KLF4 ubiquitination and leads to its accumulation. CONCLUSIONS Collectively, our data indicate the existence of a positive feedback loop between KLF4 and ITGB4 that promotes GSC self-renewal and gliomagenesis, suggesting that ITGB4 may be a valuable therapeutic target for glioma.
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Affiliation(s)
- Binbin Ma
- Department of Neurosurgery, Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116027 China
| | - Li Zhang
- Laboratory of Pathogenic Biology, College of Basic Medical Science, Dalian Medical University, Dalian, 116027 China
| | - Yujie Zou
- Nursing Department, First Affiliated Hospital, Dalian Medical University, Dalian, 116011 China
| | - Ruiping He
- Department of Neurosurgery, Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116027 China
| | - Qiong Wu
- Department of Neurology of Dalian Municipal Central Hospital Affiliated, Dalian Medical University, Dalian, 116033 China
| | - Chuanchun Han
- Department of Neurosurgery, Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116027 China
| | - Bo Zhang
- Department of Neurosurgery, Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116027 China
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Liu X, Sun H, Yu M, Liu J, Yang B, Wu Y, Wang J. DDIT3 regulates cementoblast mineralization by isocitrate dehydrogenase 1 through nuclear factor-κB pathway. J Cell Physiol 2018; 234:11602-11609. [PMID: 30488444 DOI: 10.1002/jcp.27811] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 11/06/2018] [Indexed: 02/06/2023]
Abstract
DDIT3 is of great importance in endoplasmic reticulum stress and is involved in many inflammatory diseases and mineralization processes. The cementum protects teeth from periodontitis and provides attachment for Sharpey's fibers of the periodontal ligament. However, the effect of DDIT3 on cementoblast differentiation remains largely unknown. In this study, we found that DDIT3 was suppressed during cementoblast differentiation. Knockdown of DDIT3 increased the messenger RNA (mRNA) and protein levels of several key osteogenic markers in vitro, including alkaline phosphatase, runt-related transcription factor 2, and osteocalcin (OCN). In addition, isocitrate dehydrogenase 1 (IDH1) was increased during cementoblast differentiation, and knockdown of DDIT3 increased the protein and mRNA levels of IDH1. Furthermore, inhibition of IDH1 could partially reduce the effect of DDIT3 on cementoblast differentiation. The DDIT3 knockdown activated nuclear factor-κB (NF-κB) transcriptional activity and upregulated the expression of p-p65 and p-IκBα. The increased osteogenic differentiation ability and IDH1 expression, as induced by the DDIT3 knockdown, could be partially turned over by the addition of NF-κB inhibitor BAY 11-7082. Overall, our data clarified that DDIT3 suppresses cementoblast differentiation through IDH1, via the NF-κB pathway.
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Affiliation(s)
- Xiayi Liu
- Department of Prosthodontics, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Hualing Sun
- Department of Prosthodontics, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Miao Yu
- Department of Prosthodontics, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Jie Liu
- Department of Prosthodontics, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Beining Yang
- Department of Prosthodontics, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Yanru Wu
- Department of Prosthodontics, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Jiawei Wang
- Department of Prosthodontics, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
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Ma CH, Zhang YX, Tang LH, Yang XJ, Cui WM, Han CC, Ji WY. MicroRNA-1469, a p53-responsive microRNA promotes Genistein induced apoptosis by targeting Mcl1 in human laryngeal cancer cells. Biomed Pharmacother 2018; 106:665-671. [DOI: 10.1016/j.biopha.2018.07.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 06/23/2018] [Accepted: 07/01/2018] [Indexed: 01/22/2023] Open
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Zhang L, Li X, Chao Y, He R, Liu J, Yuan Y, Zhao W, Han C, Song X. KLF4, a miR-32-5p targeted gene, promotes cisplatin-induced apoptosis by upregulating BIK expression in prostate cancer. Cell Commun Signal 2018; 16:53. [PMID: 30176890 PMCID: PMC6122640 DOI: 10.1186/s12964-018-0270-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 08/30/2018] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Chemotherapeutic insensitivity remains a big challenge in prostate cancer treatment. Recently, increasing evidence has indicated that KLF4 plays a key role in prostate cancer. However, the potential biological role of KLF4 in Chemotherapeutic insensitivity of prostate cancer is still unknown. METHODS The role of KLF4 in cisplatin-induced apoptosis was detected by western blotting and a cell counting kit (CCK8). The potential molecular mechanism of KLF4 in regulating prostate cancer chemosensitivity was investigated by RNA sequencing analysis, q-RT-PCR, western blotting and chromatin immunoprecipitation (ChIP). The expression level of KLF4 mediated by miR-32-5p was confirmed by bioinformatic analysis and luciferase assays. RESULTS Here, we found that KLF4 was induced by cisplatin in prostate cancer cells and that the increase in KLF4 promoted cell apoptosis. Further mechanistic studies revealed that KLF4 directly bound to the promoter of BIK, facilitating its transcription. Additionally, we also found that the gene encoding KLF4 was a direct target of miR-32-5p. The downregulation of miR-32-5p in response to cisplatin treatment promoted KLF4 expression, which resulted in a increase in the chemosensitivity of prostate cancer. CONCLUSION Thus, our data revealed that KLF4 is an essential regulator in cisplatin-induced apoptosis, and the miR-32-5p-KLF4-BIK signalling axis plays an important role in prostate cancer chemosensitivity.
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Affiliation(s)
- Lu Zhang
- Department of Urology of the First Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning 116044 People’s Republic of China
- Department of Orthopedics, Second Affiliated Hospital, Dalian Medical University, Dalian, 116044 China
| | - Xiaojie Li
- Department of Urology of the First Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning 116044 People’s Republic of China
- College of Stomatology, Dalian Medical University, Dalian, 116044 China
| | - Yulin Chao
- Department of Urology of the First Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning 116044 People’s Republic of China
| | - Ruiping He
- Department of Urology of the First Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning 116044 People’s Republic of China
| | - Junqiang Liu
- Department of Urology of the First Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning 116044 People’s Republic of China
| | - Yi Yuan
- Department of Urology of the First Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning 116044 People’s Republic of China
| | - Wenzhi Zhao
- Department of Orthopedics, Second Affiliated Hospital, Dalian Medical University, Dalian, 116044 China
| | - Chuanchun Han
- Department of Urology of the First Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning 116044 People’s Republic of China
| | - Xishuang Song
- Department of Urology of the First Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning 116044 People’s Republic of China
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Zhang D, Lin J, Chao Y, Zhang L, Jin L, Li N, He R, Ma B, Zhao W, Han C. Regulation of the adaptation to ER stress by KLF4 facilitates melanoma cell metastasis via upregulating NUCB2 expression. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:176. [PMID: 30055641 PMCID: PMC6064624 DOI: 10.1186/s13046-018-0842-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 07/13/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Adaptation to ER stress has been indicated to play an important role in resistance to therapy in human melanoma. However, the relationship between adaptation to ER stress and cell metastasis in human melanoma remains unclear. METHODS The relationship of adaptation to ER stress and cell metastasis was investigated using transwell and mouse metastasis assays. The potential molecular mechanism of KLF4 in regulating the adaptation to ER stress and cell metastasis was investigated using RNA sequencing analysis, q-RT-PCR and western blot assays. The transcriptional regulation of nucleobindin 2 (NUCB2) by KLF4 was identified using bioinformatic analysis, luciferase assay, and chromatin immunoprecipitation (ChIP). The clinical significance of KLF4 and NUCB2 was based on human tissue microarray (TMA) analysis. RESULTS Here, we demonstrated that KLF4 was induced by ER stress in melanoma cells, and increased KLF4 inhibited cell apoptosis and promoted cell metastasis. Further mechanistic studies revealed that KLF4 directly bound to the promoter of NUCB2, facilitating its transcription. Additionally, an increase in KLF4 promoted melanoma ER stress resistance, tumour growth and cell metastasis by regulating NCUB2 expression in vitro and in vivo. Elevated KLF4 was found in human melanoma tissues, which was associated with NUCB2 expression. CONCLUSION Our data revealed that the promotion of ER stress resistance via the KLF4-NUCB2 axis is essential for melanoma cell metastasis, and KLF4 may be a promising specific target for melanoma therapy.
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Affiliation(s)
- Dongmei Zhang
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116044, China.,Department of Physiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China
| | - Jingrong Lin
- Department of Dermatology, the First Affiliated Hospital, Dalian Medical University, Liaoning, 116027, China
| | - Yulin Chao
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116044, China
| | - Lu Zhang
- Department of Orthopedics, Second Affiliated Hospital, Dalian Medical University, Dalian, 116044, China
| | - Lei Jin
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116044, China
| | - Na Li
- Department of Physiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044, China
| | - Ruiping He
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116044, China
| | - Binbin Ma
- Department of Orthopedics, Second Affiliated Hospital, Dalian Medical University, Dalian, 116044, China
| | - Wenzhi Zhao
- Department of Orthopedics, Second Affiliated Hospital, Dalian Medical University, Dalian, 116044, China.
| | - Chuanchun Han
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116044, China.
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17
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Jung HJ, Raghuram V, Lee JW, Knepper MA. Genome-Wide Mapping of DNA Accessibility and Binding Sites for CREB and C/EBP β in Vasopressin-Sensitive Collecting Duct Cells. J Am Soc Nephrol 2018; 29:1490-1500. [PMID: 29572403 DOI: 10.1681/asn.2017050545] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 02/18/2018] [Indexed: 11/03/2022] Open
Abstract
Background Renal water excretion is controlled by vasopressin, in part through regulation of the transcription of the aquaporin-2 gene (Aqp2).Methods To identify enhancer regions likely to be involved in the regulation of Aqp2 and other principal cell-specific genes, we used several next generation DNA-sequencing techniques in a well characterized cultured cell model of collecting duct principal cells (mpkCCD). To locate enhancers, we performed the assay for transposase-accessible chromatin using sequencing (ATAC-Seq) to identify accessible regions of DNA and integrated the data with data generated by chromatin immunoprecipitation followed by next generation DNA-sequencing (ChIP-Seq) for CCCTC binding factor (CTCF) binding, histone H3 lysine-27 acetylation, and RNA polymerase II.Results We identified two high-probability enhancers centered 81 kb upstream and 5.8 kb downstream from the Aqp2 transcriptional start site. Motif analysis of these regions and the Aqp2 promoter identified several potential transcription factor binding sites, including sites for two b-ZIP transcription factors: CCAAT/enhancer binding protein-β (C/EBPβ) and cAMP-responsive element binding protein (CREB). To identify genomic binding sites for both, we conducted ChIP-Seq using well characterized antibodies. In the presence of vasopressin, C/EBPβ, a pioneer transcription factor critical to cell-specific gene expression, bound strongly at the identified enhancer downstream from Aqp2 However, over multiple replicates, we found no detectable CREB binding sites within 390 kb of Aqp2 Thus, any role for CREB in the regulation of Aqp2 gene transcription is likely to be indirect.Conclusions The analysis identified two enhancer regions pertinent to transcriptional regulation of the Aqp2 gene and showed C/EBPβ (but not CREB) binding.
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Affiliation(s)
- Hyun Jun Jung
- Epithelial Systems Biology Laboratory, Systems Biology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland; and
| | - Viswanathan Raghuram
- Epithelial Systems Biology Laboratory, Systems Biology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland; and
| | - Jae Wook Lee
- National Cancer Center, Goyang, Gyeonggi-do, Republic of Korea
| | - Mark A Knepper
- Epithelial Systems Biology Laboratory, Systems Biology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland; and
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Lin J, Zhang D, Fan Y, Chao Y, Chang J, Li N, Han L, Han C. Regulation of Cancer Stem Cell Self-Renewal by HOXB9 Antagonizes Endoplasmic Reticulum Stress-Induced Melanoma Cell Apoptosis via the miR-765-FOXA2 Axis. J Invest Dermatol 2018; 138:1609-1619. [PMID: 29408459 DOI: 10.1016/j.jid.2018.01.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 01/13/2018] [Accepted: 01/15/2018] [Indexed: 01/13/2023]
Abstract
Adaptation to endoplasmic reticulum (ER) stress has been indicated as a driver of malignancy and resistance to therapy in human melanoma. However, the relationship between cancer stem cells and adaptation to ER stress remains unclear. Here, we show that the ratio of cancer stem cells is increased in ER stress-resistant melanoma cells, which inhibit ER stress-induced apoptosis and promote tumorigenesis. Further mechanistic studies showed that HOXB9 triggered by ER stress favors cancer stem cell self-renewal and enhances ER stress resistance. HOXB9 directly binds to the promoter of microRNA-765 and facilitates its transcription, which in turn targets FOXA2, resulting in a FOXA2 decrease and cancer stem cell increase. Additionally, an increase in HOXB9 promotes melanoma growth and inhibits cell apoptosis in a mouse xenograft model. Elevated HOXB9 is found in human melanoma tissues, which is associated with microRNA-765 up-regulation and FOXA2 decreases. Thus, our data showed that the HOXB9-dependent, microRNA-765-mediated FOXA2 pathway contributes to the survival of melanoma under ER stress by maintaining the properties of cancer stem cells.
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Affiliation(s)
- Jingrong Lin
- Institute of Cancer Stem Cell and Department of Dermatology of the First Affiliated Hospital, Dalian Medical University, Dalian, Liaoning, China
| | - Dongmei Zhang
- Department of Physiology of College of Basic Medical Science, Dalian Medical University, Dalian, Liaoning, China
| | - Yongsheng Fan
- Institute of Cancer Stem Cell and Department of Dermatology of the First Affiliated Hospital, Dalian Medical University, Dalian, Liaoning, China
| | - Yulin Chao
- Institute of Cancer Stem Cell and Department of Dermatology of the First Affiliated Hospital, Dalian Medical University, Dalian, Liaoning, China
| | - Jinming Chang
- Institute of Cancer Stem Cell and Department of Dermatology of the First Affiliated Hospital, Dalian Medical University, Dalian, Liaoning, China
| | - Na Li
- Department of Physiology of College of Basic Medical Science, Dalian Medical University, Dalian, Liaoning, China
| | - Linlin Han
- Physical Examination Center, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Chuanchun Han
- Institute of Cancer Stem Cell and Department of Dermatology of the First Affiliated Hospital, Dalian Medical University, Dalian, Liaoning, China.
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Lin Z, He R, Luo H, Lu C, Ning Z, Wu Y, Han C, Tan G, Wang Z. Integrin-β5, a miR-185-targeted gene, promotes hepatocellular carcinoma tumorigenesis by regulating β-catenin stability. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:17. [PMID: 29386044 PMCID: PMC5793391 DOI: 10.1186/s13046-018-0691-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 01/24/2018] [Indexed: 12/15/2022]
Abstract
Background The tumour microenvironment is essential for cancer progress and metastasis. Integrin-β5 (ITGB5), a member of the integrin family, has been implicated to mediate the interactions of cells with the extracellular matrix (ECM) and promote tumorigenesis in several malignancies. However, the role of ITGB5 in hepatocellular carcinoma (HCC) is still unknown. Methods The biological function of ITGB5 in HCC was investigated using migration, colony formation assays. The potential molecular mechanism of ITGB5 in regulating HCC tumorigenesis and β-catenin stabilization was investigated by western blotting, co-immunoprecipitation and ubiquitination assays. The expression level of ITGB5 mediated by miR-185 was confirmed by bioinformatic analysis, luciferase assay. The clinical significance of ITGB5 was based on human tissue microarray (TMA) analysis. Results Here, we found that the expression of ITGB5 is increased in HCC tissues. Elevated ITGB5 markedly facilitates HCC cell migration and tumorigenesis in vitro and in vivo. Further mechanistic studies revealed that ITGB5, as a partner of β-catenin, directly interacts with β-catenin and inhibits its degradation, thus leading to WNT/β-catenin activity. Subsequently, we also found that ITGB5 is a direct targeted gene of miR-185. The downregulation of miR-185 in HCC cells promotes an increase in ITGB5. An additional increase of ITGB5 is associated with β-catenin upregulation and a miR-185 decrease in HCC tissues. Conclusions Our data reveal that the miR-185-ITGB5-β-catenin pathway plays an important role in HCC tumorigenesis, and ITGB5 may be a promising specific target for HCC therapy. Electronic supplementary material The online version of this article (10.1186/s13046-018-0691-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Zhikun Lin
- Department of Hepatobiliary Surgery of the First Affiliated Hospital& Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116027, China
| | - Ruiping He
- Department of Hepatobiliary Surgery of the First Affiliated Hospital& Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116027, China
| | - Haifeng Luo
- Department of Hepatobiliary Surgery of the First Affiliated Hospital& Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116027, China
| | - Chang Lu
- Department of Hepatobiliary Surgery of the First Affiliated Hospital& Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116027, China
| | - Zhen Ning
- Department of Hepatobiliary Surgery of the First Affiliated Hospital& Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116027, China
| | - Yuanhang Wu
- Department of Oncology of the First Affiliated Hospital, Dalian Medical University, Dalian, 116027, China
| | - Chuanchun Han
- Department of Hepatobiliary Surgery of the First Affiliated Hospital& Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116027, China.
| | - Guang Tan
- Department of Hepatobiliary Surgery of the First Affiliated Hospital& Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116027, China.
| | - Zhongyu Wang
- Department of Hepatobiliary Surgery of the First Affiliated Hospital& Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116027, China.
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Zhang N, Liu L, Fan N, Zhang Q, Wang W, Zheng M, Ma L, Li Y, Shi L. The requirement of SEPT2 and SEPT7 for migration and invasion in human breast cancer via MEK/ERK activation. Oncotarget 2018; 7:61587-61600. [PMID: 27557506 PMCID: PMC5308674 DOI: 10.18632/oncotarget.11402] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Accepted: 07/28/2016] [Indexed: 11/25/2022] Open
Abstract
Septins are a novel class of GTP-binding cytoskeletal proteins evolutionarily conserved from yeast to mammals and have now been found to play a contributing role in a broad range of tumor types. However, their functional importance in breast cancer remains largely unclear. Here, we demonstrated that pharmaceutical inhibition of global septin dynamics would greatly suppress proliferation, migration and invasiveness in breast cancer cell lines. We then examined the expression and subcellular distribution of the selected septins SEPT2 and SEPT7 in breast cancer cells, revealing a rather variable localization of the two proteins with cell cycle progression. To determine the role of both septins in mediating malignant behavior of cancer cells, we used RNA silencing to specifically deplete endogenous SEPT2 or SEPT7 in highly invasive breast cancer cell line MDA-MB-231. Our findings showed that SEPT2/7 depletion had virtually identical inhibitory effects on cellular proliferation, apoptosis, migration and invasion. Moreover, the opposite performance in migration and invasion was observed after enforced expression of SEPT2/7 in the same cell line. We further demonstrated MEK/ERK activation, but not other MAPKs and AKT, was positively correlated with the protein levels of SEPT2 and SEPT7. Additionally, in SEPT2/7-overexpressing cells, the MEK specific inhibitor U0126 was able to correct the high active status of MEK/ERK while normalizing the increased invasive behaviors of these cells. Taken together, these results strongly suggest that SEPT2 and SEPT7 are involved in breast carcinogenesis and may serve as valuable therapeutic targets for breast cancer.
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Affiliation(s)
- Nianzhu Zhang
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, 116044, Liaoning, P.R.China
| | - Lu Liu
- College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044 Liaoning, P.R.China
| | - Ning Fan
- College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044 Liaoning, P.R.China
| | - Qian Zhang
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, 116044, Liaoning, P.R.China
| | - Weijie Wang
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, 116044, Liaoning, P.R.China
| | - Mingnan Zheng
- Department of Gynecology and Obstetrics, Dalian Municipal Central Hospital Affiliated to Dalian Medical University, Dalian, 116033, Liaoning, P.R.China
| | - Lingfei Ma
- The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, Liaoning, P.R.China
| | - Yan Li
- College of Basic Medical Sciences, Dalian Medical University, Dalian, 116044 Liaoning, P.R.China
| | - Lei Shi
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, 116044, Liaoning, P.R.China.,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, P.R.China
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21
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Zhang L, Zhang L, Xia X, He S, He H, Zhao W. Krüppel-like factor 4 promotes human osteosarcoma growth and metastasis via regulating CRYAB expression. Oncotarget 2018; 7:30990-1000. [PMID: 27105535 PMCID: PMC5058733 DOI: 10.18632/oncotarget.8824] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 03/31/2016] [Indexed: 12/20/2022] Open
Abstract
Krüppel-like factor 4 (KLF4), a zinc-finger transcription factor, is an essential regulator in many cellular processes, including differentiation, proliferation, inflammation, pluripotency, and apoptosis. Along with these roles in normal cells and tissues, KLF4 has been reported as a tumor suppressor or an oncogene in many cancers. However, the role of KLF4 in osteosarcoma is largely unknown. Here we found the expression of KLF4 was significantly increased in human osteosarcoma tissues compared with the normal tissues. Elevated KLF4 promoted human osteosarcoma cell proliferation and metastasis. Subsequently, mechanistic studies revealed KLF4 specifically bound the promoter of CRYAB and upregulated CRYAB expression in human osteosarcoma cells. Moreover, we found that KLF4 enhanced osteosarcoma cell proliferation and migration via upregulating CRYAB. Therefore, our studies suggested KLF4 may be a potential target for human osteosarcoma therapy.
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Affiliation(s)
- Lu Zhang
- Department of Orthopedics, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China
| | - Li Zhang
- Laboratory of Pathogenic Biology, College of Basic Medical Science of Dalian Medical University, Dalian 116027, China
| | - Xin Xia
- Department of Orthopedics, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China
| | - Shengwei He
- Department of Orthopedics, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China
| | - Hongtao He
- Department of Orthopedics, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China
| | - Wenzhi Zhao
- Department of Orthopedics, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China.,Department of Orthopedics, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, China
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22
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Yang X, Sun D, Dong C, Tian Y, Gao Z, Wang L. Pinin associates with prognosis of hepatocellular carcinoma through promoting cell proliferation and suppressing glucose deprivation-induced apoptosis. Oncotarget 2018; 7:39694-39704. [PMID: 27175589 PMCID: PMC5129963 DOI: 10.18632/oncotarget.9233] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 04/24/2016] [Indexed: 01/16/2023] Open
Abstract
The roles of Pinin have been well studied in epithelial cell-cell adhesion and RNA alternative splicing, which suggests its involvement in cancer progression. However, little is known about the association between Pinin expression and hepatocellular carcinoma (HCC) tumorigenesis. In this study we report increased expression of Pinin in HCC tissues and cells. Elevated levels of Pinin closely associates with pathological grade and overall survival of patients with hepatocellular carcinoma. Suppression of Pinin expression via lentivirus mediated shRNA knockdown inhibits HCC cell proliferation, colony formation, cell viability, but promotes glucose deprivation (GD)-induced cell apoptosis. On the contrary, overexpression of Pinin reverses these effects observed in Pinin depleted cells. Meanwhile, overexpression of Pinin attenuates GD initiated poly ADP-ribose polymerase (PARP) cleavage and ERK1/2 dephosphorylation, which can be completely blocked with MEK1/2 inhibitor U0126. Therefore, we conclude that Pinin contributes to HCC progression and resistance to GD-induced apoptosis via maintaining ERK1/2 activation and hence may be a potential therapeutic target in hepatocellular carcinoma treatment.
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Affiliation(s)
- Xuejun Yang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian 116027, China.,Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Deguang Sun
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Chengyong Dong
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Yu Tian
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Zhenming Gao
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Liming Wang
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian 116011, China
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23
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Yang Y, Liu L, Naik I, Braunstein Z, Zhong J, Ren B. Transcription Factor C/EBP Homologous Protein in Health and Diseases. Front Immunol 2017; 8:1612. [PMID: 29230213 PMCID: PMC5712004 DOI: 10.3389/fimmu.2017.01612] [Citation(s) in RCA: 120] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Accepted: 11/07/2017] [Indexed: 12/13/2022] Open
Abstract
C/EBP homologous protein (CHOP), known also as DNA damage-inducible transcript 3 and as growth arrest and DNA damage-inducible protein 153 (GADD153), is induced in response to certain stressors. CHOP is universally acknowledged as a main conduit to endoplasmic reticulum stress-induced apoptosis. Ongoing research established the existence of CHOP-mediated apoptosis signaling networks, for which novel downstream targets are still being determined. However, there are studies that contradict this notion and assert that apoptosis is not the only mechanism by which CHOP plays in the development of pathologies. In this review, insights into the roles of CHOP in pathophysiology are summarized at the molecular and cellular levels. We further focus on the newest advances that implicate CHOP in human diseases including cancer, diabetes, neurodegenerative disorders, and notably, fibrosis.
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Affiliation(s)
- Yuan Yang
- Center for Molecular Medicine, Medical School of Yangtze University, Jingzhou, China.,Department of Radiology, Medical School of Yangtze University, Jingzhou, China
| | - Lian Liu
- Department of Pharmacology, Medical School of Yangtze University, Jingzhou, China
| | - Ishan Naik
- Cardiovascular Research Institute, Case Western Reserve University, Cleveland, OH, United States
| | - Zachary Braunstein
- Boonshoft School of Medicine, Wright State University, Dayton, OH, United States
| | - Jixin Zhong
- Cardiovascular Research Institute, Case Western Reserve University, Cleveland, OH, United States
| | - Boxu Ren
- Center for Molecular Medicine, Medical School of Yangtze University, Jingzhou, China.,Department of Radiology, Medical School of Yangtze University, Jingzhou, China
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24
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Li X, Ma C, Zhang L, Li N, Zhang X, He J, He R, Shao M, Wang J, Kang L, Han C. LncRNAAC132217.4, a KLF8-regulated long non-coding RNA, facilitates oral squamous cell carcinoma metastasis by upregulating IGF2 expression. Cancer Lett 2017; 407:45-56. [DOI: 10.1016/j.canlet.2017.08.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 08/05/2017] [Accepted: 08/09/2017] [Indexed: 12/11/2022]
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25
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Zhang L, Wang Y, Li X, Xia X, Li N, He R, He H, Han C, Zhao W. ZBTB7A Enhances Osteosarcoma Chemoresistance by Transcriptionally Repressing lncRNALINC00473-IL24 Activity. Neoplasia 2017; 19:908-918. [PMID: 28942243 PMCID: PMC5609875 DOI: 10.1016/j.neo.2017.08.008] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 08/14/2017] [Accepted: 08/22/2017] [Indexed: 12/21/2022] Open
Abstract
Chemoresistance remains a major drawback to osteosarcoma treatment. ZBTB7A, a member of the POK transcription repressor family, was shown to play an important role in tumorigenesis. However, the effect of ZBTB7A on osteosarcoma chemoresistance is completely unknown. In this study, we found that ZBTB7A is increased in cisplatin-resistant osteosarcoma cells and that elevated ZBTB7A inhibits cisplatin-induced apoptosis by repressing LINC00473 expression. Further mechanistic studies revealed that ZBTB7A directly binds to the promoter and suppresses the transcription of LINC00473. Additionally, our data indicate that LINC00473 interacts with the transcript factor C/EBPβ, facilitating its binding to the promoter of IL24, leading to decrease chemoresistance. Thus, these findings indicate that the ZBTB7A-mediated LINC00473-C/EBPβ-IL24 pathway is a promising novel target for overcoming cisplatin resistance in osteosarcoma.
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Affiliation(s)
- Lu Zhang
- Department of Orthopedics, Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian116027, China
| | - Yuan Wang
- Department of Orthopedics, Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian116027, China
| | - Xiaojie Li
- College of Stomatology, Dalian Medical University, Dalian 116044, China
| | - Xin Xia
- Department of Orthopedics, Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian116027, China
| | - Na Li
- Pathology Department of College of Basic Medical Science, Dalian Medical University, Dalian 116044, China
| | - Ruiping He
- Department of Orthopedics, Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian116027, China
| | - Hongtao He
- Department of Orthopedics, Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian116027, China
| | - Chuanchun Han
- Department of Orthopedics, Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian116027, China.
| | - Wenzhi Zhao
- Department of Orthopedics, Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian116027, China.
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26
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Shen T, Li Y, Chen Z, Liang S, Guo Z, Wang P, Wu Q, Ba G, Fu Q. CHOP negatively regulates Polo-like kinase 2 expression via recruiting C/EBPα to the upstream-promoter in human osteosarcoma cell line during ER stress. Int J Biochem Cell Biol 2017; 89:207-215. [DOI: 10.1016/j.biocel.2017.06.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 06/09/2017] [Accepted: 06/22/2017] [Indexed: 01/06/2023]
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27
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Ma B, Gao Z, Lou J, Zhang H, Yuan Z, Wu Q, Li X, Zhang B. Long non-coding RNA MEG3 contributes to cisplatin-induced apoptosis via inhibition of autophagy in human glioma cells. Mol Med Rep 2017; 16:2946-2952. [DOI: 10.3892/mmr.2017.6897] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 04/06/2017] [Indexed: 11/05/2022] Open
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28
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Liu DC, Zheng X, Zho Y, Yi WR, Li ZH, Hu X, Yu AX. HIF-1α inhibits IDH-1 expression in osteosarcoma. Oncol Rep 2017; 38:336-342. [DOI: 10.3892/or.2017.5655] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Accepted: 11/16/2016] [Indexed: 11/05/2022] Open
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29
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Ma B, Yuan Z, Zhang L, Lv P, Yang T, Gao J, Pan N, Wu Q, Lou J, Han C, Zhang B. Long non-coding RNA AC023115.3 suppresses chemoresistance of glioblastoma by reducing autophagy. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2017; 1864:1393-1404. [PMID: 28499919 DOI: 10.1016/j.bbamcr.2017.05.008] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 05/05/2017] [Accepted: 05/08/2017] [Indexed: 12/13/2022]
Abstract
Malignant glioma is an aggressive brain cancer that responds poorly to chemotherapy. However, the molecular mechanism underlying the development of chemoresistance in glioma is not well-understood. In this study, we show that long non-coding RNA AC023115.3 is induced by cisplatin in human glioblastoma cells and that elevated AC023115.3 promotes cisplatin-induced apoptosis by inhibiting autophagy. Further mechanistic studies revealed that AC023115.3 acts as a competing endogenous RNA for miR-26a and attenuates the inhibitory effect of miR-26a on GSK3β, a proline-directed serine-threonine kinase that promotes the degradation of Mcl1, leading to an increase in GSK3β and a decrease in autophagy. Additionally, we discovered that AC023115.3 improves chemosensitivity of glioma cells to cisplatin by regulating the miR-26a-GSK3β-Mcl1 pathway. Thus, these data indicate that the AC023115.3-miR-26a-GSK3β signalling axis plays an important role in reducing the chemoresistance of glioma.
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Affiliation(s)
- Binbin Ma
- Department of Neurosurgery, Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116027, China
| | - Zhongbo Yuan
- Department of Neurosurgery, Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116027, China
| | - Li Zhang
- Laboratory of Pathogenic Biology, College of Basic Medical Science, Dalian Medical University, Dalian 116027, China
| | - Peng Lv
- Research Center, Second Affiliated Hospital, Dalian Medical University, Dalian 116027, China
| | - Ting Yang
- Department of Neurosurgery, Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116027, China
| | - Jinxia Gao
- Department of Anaesthesiology, Second Affiliated Hospital, Dalian Medical University, 116027, China
| | - Ning Pan
- Department of Anaesthesiology, Second Affiliated Hospital, Dalian Medical University, 116027, China
| | - Qiong Wu
- Department of Neurology of Dalian Municipal Central Hospital Affiliated, Dalian Medical University, 116033, China
| | - Jiacheng Lou
- Department of Neurosurgery, Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116027, China
| | - Chuanchun Han
- Department of Neurosurgery, Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116027, China.
| | - Bo Zhang
- Department of Neurosurgery, Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116027, China.
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30
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Transcription factors regulate GPR91-mediated expression of VEGF in hypoxia-induced retinopathy. Sci Rep 2017; 7:45807. [PMID: 28374767 PMCID: PMC5379554 DOI: 10.1038/srep45807] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 08/03/2016] [Indexed: 12/28/2022] Open
Abstract
Hypoxia is the most important factor in the pathogenesis of diabetic retinopathy (DR). Our previous studies demonstrated that G protein-coupled receptor 91(GPR91) participated in the regulation of vascular endothelial growth factor (VEGF) secretion in DR. The present study induced OIR model in newborn rats using exposure to alternating 24-hour episodes of 50% and 12% oxygen for 14 days. Treatment with GPR91 shRNA attenuated the retinal avascular area, abnormal neovascularization and pericyte loss. Western blot and qRT-PCR demonstrated that CoCl2 exposure promoted VEGF expression and secretion, activated the ERK1/2 signaling pathways and upregulated C/EBP and AP-1. Knockdown of GPR91 inhibited ERK1/2 activity. GPR91 siRNA transduction and the ERK1/2 inhibitor U0126 inhibited the increases in C/EBP β, C/EBP δ, c-Fos and HIF-1α. Luciferase reporter assays and a chromatin immunoprecipitation (ChIP) assay demonstrated that C/EBP β and c-Fos bound the functional transcriptional factor binding site in the region of the VEGF promoter, but not C/EBP δ. Knockdown of C/EBP β and c-Fos using RNAi reduced VEGF expression. Our data suggest that activation of the GPR91-ERK1/2-C/EBP β (c-Fos, HIF-1α) signaling pathway plays a tonic role in regulating VEGF transcription in rat retinal ganglion cells.
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31
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Wang H, Yuan G, Zhao B, Zhao Y, Qiu Y. High expression of B23 is associated with tumorigenesis and poor prognosis in bladder urothelial carcinoma. Mol Med Rep 2016; 15:743-749. [PMID: 27959455 PMCID: PMC5364846 DOI: 10.3892/mmr.2016.6033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 11/10/2016] [Indexed: 12/02/2022] Open
Abstract
B23, a multifunctional nucleolar protein, is overexpressed in numerous cancers and is associated with tumorigenesis. However, the clinical significance and potential role of B23 in bladder urothelial carcinoma remains to be elucidated. The present study observed that the mRNA and protein expression levels of B23 were increased in bladder cancer cells and tissues. The overexpression of B23 contributed to tumorigenesis and was associated with poor prognosis in bladder cancer patients. Silencing of B23 by short hairpin RNA inhibited tumor cell growth and colony formation. In addition, knockdown of B23 suppressed the phosphorylation of extracellular signal-regulated kinase (ERK), resulting in the inactivation of the ERK signaling pathway. Therefore, the present study indicated that B23 promotes bladder cancer cell growth via activation of the ERK signaling pathway and is a novel potential biomarker for the diagnosis and prognosis of bladder cancer.
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Affiliation(s)
- Haiping Wang
- Department of Urology, Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Gangjun Yuan
- Department of Urology, Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Bai Zhao
- Department of Urology, Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Yakun Zhao
- Department of Urology, Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Yu Qiu
- Department of Urology, Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
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32
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Abdel Malik R, Zippel N, Frömel T, Heidler J, Zukunft S, Walzog B, Ansari N, Pampaloni F, Wingert S, Rieger MA, Wittig I, Fisslthaler B, Fleming I. AMP-Activated Protein Kinase α2 in Neutrophils Regulates Vascular Repair via Hypoxia-Inducible Factor-1α and a Network of Proteins Affecting Metabolism and Apoptosis. Circ Res 2016; 120:99-109. [PMID: 27777247 PMCID: PMC5213742 DOI: 10.1161/circresaha.116.309937] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 10/17/2016] [Accepted: 10/21/2016] [Indexed: 12/21/2022]
Abstract
RATIONALE The AMP-activated protein kinase (AMPK) is stimulated by hypoxia, and although the AMPKα1 catalytic subunit has been implicated in angiogenesis, little is known about the role played by the AMPKα2 subunit in vascular repair. OBJECTIVE To determine the role of the AMPKα2 subunit in vascular repair. METHODS AND RESULTS Recovery of blood flow after femoral artery ligation was impaired (>80%) in AMPKα2-/- versus wild-type mice, a phenotype reproduced in mice lacking AMPKα2 in myeloid cells (AMPKα2ΔMC). Three days after ligation, neutrophil infiltration into ischemic limbs of AMPKα2ΔMC mice was lower than that in wild-type mice despite being higher after 24 hours. Neutrophil survival in ischemic tissue is required to attract monocytes that contribute to the angiogenic response. Indeed, apoptosis was increased in hypoxic neutrophils from AMPKα2ΔMC mice, fewer monocytes were recruited, and gene array analysis revealed attenuated expression of proangiogenic proteins in ischemic AMPKα2ΔMC hindlimbs. Many angiogenic growth factors are regulated by hypoxia-inducible factor, and hypoxia-inducible factor-1α induction was attenuated in AMPKα2-deficient cells and accompanied by its enhanced hydroxylation. Also, fewer proteins were regulated by hypoxia in neutrophils from AMPKα2ΔMC mice. Mechanistically, isocitrate dehydrogenase expression and the production of α-ketoglutarate, which negatively regulate hypoxia-inducible factor-1α stability, were attenuated in neutrophils from wild-type mice but remained elevated in cells from AMPKα2ΔMC mice. CONCLUSIONS AMPKα2 regulates α-ketoglutarate generation, hypoxia-inducible factor-1α stability, and neutrophil survival, which in turn determine further myeloid cell recruitment and repair potential. The activation of AMPKα2 in neutrophils is a decisive event in the initiation of vascular repair after ischemia.
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Affiliation(s)
- Randa Abdel Malik
- From the Institute for Vascular Signaling, Centre for Molecular Medicine (R.A.M., N.Z., T.F., S.Z., B.F., I.F.), Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine (J.H., I.W.), ECCPS Metabolomics Facility, Institute for Vascular Signaling, Centre for Molecular Medicine (S.Z.), Department of Hematology/Oncology (S.W., M.A.R.), and Buchmann Institute for Molecular Life Sciences (N.A., F.P.), Goethe University, Frankfurt am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany (R.A.M., T.F., J.H., S.Z., B.F., I.F.); and Walter-Brendel-Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Ludwig Maximilians University, Munich, Germany (B.W.)
| | - Nina Zippel
- From the Institute for Vascular Signaling, Centre for Molecular Medicine (R.A.M., N.Z., T.F., S.Z., B.F., I.F.), Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine (J.H., I.W.), ECCPS Metabolomics Facility, Institute for Vascular Signaling, Centre for Molecular Medicine (S.Z.), Department of Hematology/Oncology (S.W., M.A.R.), and Buchmann Institute for Molecular Life Sciences (N.A., F.P.), Goethe University, Frankfurt am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany (R.A.M., T.F., J.H., S.Z., B.F., I.F.); and Walter-Brendel-Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Ludwig Maximilians University, Munich, Germany (B.W.)
| | - Timo Frömel
- From the Institute for Vascular Signaling, Centre for Molecular Medicine (R.A.M., N.Z., T.F., S.Z., B.F., I.F.), Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine (J.H., I.W.), ECCPS Metabolomics Facility, Institute for Vascular Signaling, Centre for Molecular Medicine (S.Z.), Department of Hematology/Oncology (S.W., M.A.R.), and Buchmann Institute for Molecular Life Sciences (N.A., F.P.), Goethe University, Frankfurt am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany (R.A.M., T.F., J.H., S.Z., B.F., I.F.); and Walter-Brendel-Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Ludwig Maximilians University, Munich, Germany (B.W.)
| | - Juliana Heidler
- From the Institute for Vascular Signaling, Centre for Molecular Medicine (R.A.M., N.Z., T.F., S.Z., B.F., I.F.), Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine (J.H., I.W.), ECCPS Metabolomics Facility, Institute for Vascular Signaling, Centre for Molecular Medicine (S.Z.), Department of Hematology/Oncology (S.W., M.A.R.), and Buchmann Institute for Molecular Life Sciences (N.A., F.P.), Goethe University, Frankfurt am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany (R.A.M., T.F., J.H., S.Z., B.F., I.F.); and Walter-Brendel-Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Ludwig Maximilians University, Munich, Germany (B.W.)
| | - Sven Zukunft
- From the Institute for Vascular Signaling, Centre for Molecular Medicine (R.A.M., N.Z., T.F., S.Z., B.F., I.F.), Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine (J.H., I.W.), ECCPS Metabolomics Facility, Institute for Vascular Signaling, Centre for Molecular Medicine (S.Z.), Department of Hematology/Oncology (S.W., M.A.R.), and Buchmann Institute for Molecular Life Sciences (N.A., F.P.), Goethe University, Frankfurt am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany (R.A.M., T.F., J.H., S.Z., B.F., I.F.); and Walter-Brendel-Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Ludwig Maximilians University, Munich, Germany (B.W.)
| | - Barbara Walzog
- From the Institute for Vascular Signaling, Centre for Molecular Medicine (R.A.M., N.Z., T.F., S.Z., B.F., I.F.), Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine (J.H., I.W.), ECCPS Metabolomics Facility, Institute for Vascular Signaling, Centre for Molecular Medicine (S.Z.), Department of Hematology/Oncology (S.W., M.A.R.), and Buchmann Institute for Molecular Life Sciences (N.A., F.P.), Goethe University, Frankfurt am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany (R.A.M., T.F., J.H., S.Z., B.F., I.F.); and Walter-Brendel-Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Ludwig Maximilians University, Munich, Germany (B.W.)
| | - Nariman Ansari
- From the Institute for Vascular Signaling, Centre for Molecular Medicine (R.A.M., N.Z., T.F., S.Z., B.F., I.F.), Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine (J.H., I.W.), ECCPS Metabolomics Facility, Institute for Vascular Signaling, Centre for Molecular Medicine (S.Z.), Department of Hematology/Oncology (S.W., M.A.R.), and Buchmann Institute for Molecular Life Sciences (N.A., F.P.), Goethe University, Frankfurt am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany (R.A.M., T.F., J.H., S.Z., B.F., I.F.); and Walter-Brendel-Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Ludwig Maximilians University, Munich, Germany (B.W.)
| | - Francesco Pampaloni
- From the Institute for Vascular Signaling, Centre for Molecular Medicine (R.A.M., N.Z., T.F., S.Z., B.F., I.F.), Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine (J.H., I.W.), ECCPS Metabolomics Facility, Institute for Vascular Signaling, Centre for Molecular Medicine (S.Z.), Department of Hematology/Oncology (S.W., M.A.R.), and Buchmann Institute for Molecular Life Sciences (N.A., F.P.), Goethe University, Frankfurt am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany (R.A.M., T.F., J.H., S.Z., B.F., I.F.); and Walter-Brendel-Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Ludwig Maximilians University, Munich, Germany (B.W.)
| | - Susanne Wingert
- From the Institute for Vascular Signaling, Centre for Molecular Medicine (R.A.M., N.Z., T.F., S.Z., B.F., I.F.), Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine (J.H., I.W.), ECCPS Metabolomics Facility, Institute for Vascular Signaling, Centre for Molecular Medicine (S.Z.), Department of Hematology/Oncology (S.W., M.A.R.), and Buchmann Institute for Molecular Life Sciences (N.A., F.P.), Goethe University, Frankfurt am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany (R.A.M., T.F., J.H., S.Z., B.F., I.F.); and Walter-Brendel-Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Ludwig Maximilians University, Munich, Germany (B.W.)
| | - Michael A Rieger
- From the Institute for Vascular Signaling, Centre for Molecular Medicine (R.A.M., N.Z., T.F., S.Z., B.F., I.F.), Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine (J.H., I.W.), ECCPS Metabolomics Facility, Institute for Vascular Signaling, Centre for Molecular Medicine (S.Z.), Department of Hematology/Oncology (S.W., M.A.R.), and Buchmann Institute for Molecular Life Sciences (N.A., F.P.), Goethe University, Frankfurt am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany (R.A.M., T.F., J.H., S.Z., B.F., I.F.); and Walter-Brendel-Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Ludwig Maximilians University, Munich, Germany (B.W.)
| | - Ilka Wittig
- From the Institute for Vascular Signaling, Centre for Molecular Medicine (R.A.M., N.Z., T.F., S.Z., B.F., I.F.), Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine (J.H., I.W.), ECCPS Metabolomics Facility, Institute for Vascular Signaling, Centre for Molecular Medicine (S.Z.), Department of Hematology/Oncology (S.W., M.A.R.), and Buchmann Institute for Molecular Life Sciences (N.A., F.P.), Goethe University, Frankfurt am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany (R.A.M., T.F., J.H., S.Z., B.F., I.F.); and Walter-Brendel-Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Ludwig Maximilians University, Munich, Germany (B.W.)
| | - Beate Fisslthaler
- From the Institute for Vascular Signaling, Centre for Molecular Medicine (R.A.M., N.Z., T.F., S.Z., B.F., I.F.), Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine (J.H., I.W.), ECCPS Metabolomics Facility, Institute for Vascular Signaling, Centre for Molecular Medicine (S.Z.), Department of Hematology/Oncology (S.W., M.A.R.), and Buchmann Institute for Molecular Life Sciences (N.A., F.P.), Goethe University, Frankfurt am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany (R.A.M., T.F., J.H., S.Z., B.F., I.F.); and Walter-Brendel-Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Ludwig Maximilians University, Munich, Germany (B.W.)
| | - Ingrid Fleming
- From the Institute for Vascular Signaling, Centre for Molecular Medicine (R.A.M., N.Z., T.F., S.Z., B.F., I.F.), Functional Proteomics, SFB 815 Core Unit, Faculty of Medicine (J.H., I.W.), ECCPS Metabolomics Facility, Institute for Vascular Signaling, Centre for Molecular Medicine (S.Z.), Department of Hematology/Oncology (S.W., M.A.R.), and Buchmann Institute for Molecular Life Sciences (N.A., F.P.), Goethe University, Frankfurt am Main, Germany; German Center of Cardiovascular Research (DZHK), Partner site Rhein-Main, Frankfurt am Main, Germany (R.A.M., T.F., J.H., S.Z., B.F., I.F.); and Walter-Brendel-Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Ludwig Maximilians University, Munich, Germany (B.W.).
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Wang Y, Zhang L, Zheng X, Zhong W, Tian X, Yin B, Tian K, Zhang W. Long non-coding RNA LINC00161 sensitises osteosarcoma cells to cisplatin-induced apoptosis by regulating the miR-645-IFIT2 axis. Cancer Lett 2016; 382:137-146. [PMID: 27609068 DOI: 10.1016/j.canlet.2016.08.024] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 08/25/2016] [Accepted: 08/28/2016] [Indexed: 12/20/2022]
Abstract
Chemotherapeutic insensitivity remains a major obstacle to osteosarcoma treatment. Recently, increasing evidence has suggested that long non-coding RNAs (lncRNAs) play an essential role in tumourigenesis. However, the potential biological roles and regulatory mechanisms of novel lncRNAs in response to cisplatin treatment are poorly understood. Here, we found that lncRNA LINC00161 was induced by cisplatin in osteosarcoma cells. Elevated LINC00161 increased cisplatin-induced apoptosis and reversed the cisplatin-resistant phenotype of osteosarcoma cells by upregulating IFIT2. Further mechanistic studies revealed that LINC00161 could sponge endogenous miR-645 and inhibit its activity leading to IFIT2 increase. In addition, we identified that LINC00161 enhanced cisplatin-induced apoptosis through regulation of the miR-645-IFIT2 pathway. Thus, these findings demonstrate that LINC00161 is an essential regulator in cisplatin-induced apoptosis, and the LINC00161-miR-645-IFIT2 signalling axis plays an important role in reducing osteosarcoma chemoresistance.
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Affiliation(s)
- Yuan Wang
- Department of Orthopaedics, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116044, China
| | - Li Zhang
- Laboratory of Pathogenic Biology, College of Basic Medical Science of Dalian Medical University, Dalian 116027, China
| | - Xifu Zheng
- Department of Orthopaedics, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116044, China
| | - Weiliang Zhong
- Department of Orthopaedics, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116044, China
| | - Xiliang Tian
- Department of Orthopaedics, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116044, China
| | - Baosheng Yin
- Department of Orthopaedics, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116044, China
| | - Kang Tian
- Department of Orthopaedics, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116044, China
| | - Weiguo Zhang
- Department of Orthopaedics, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116044, China.
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Sterol Regulatory Element Binding Protein Regulates the Expression and Metabolic Functions of Wild-Type and Oncogenic IDH1. Mol Cell Biol 2016; 36:2384-95. [PMID: 27354064 DOI: 10.1128/mcb.00163-16] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 06/21/2016] [Indexed: 01/08/2023] Open
Abstract
Sterol regulatory element binding protein (SREBP) is a major transcriptional regulator of the enzymes underlying de novo lipid synthesis. However, little is known about the SREBP-mediated control of processes that indirectly support lipogenesis, for instance, by supplying reducing power in the form of NAPDH or directing carbon flux into lipid precursors. Here, we characterize isocitrate dehydrogenase 1 (IDH1) as a transcriptional target of SREBP across a spectrum of cancer cell lines and human cancers. IDH1 promotes the synthesis of lipids specifically from glutamine-derived carbons. Neomorphic mutations in IDH1 occur frequently in certain cancers, leading to the production of the oncometabolite 2-hydroxyglutarate (2-HG). We found that SREBP induces the expression of oncogenic IDH1 and influences 2-HG production from glucose. Treatment of cells with 25-hydroxycholesterol or statins, which respectively inhibit or activate SREBP, further supports SREBP-mediated regulation of IDH1 and, in cells with oncogenic IDH1, carbon flux into 2-HG.
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Kim KH, Chae JI, Oh H, Cho JH, Lee RH, Yoon G, Cho SS, Cho YS, Lee MH, Liu K, Lee HJ, Shim JH. Manumycin A induces apoptosis in malignant pleural mesothelioma through regulation of Sp1 and activation of the mitochondria-related apoptotic pathway. Oncol Rep 2016; 36:117-24. [PMID: 27176604 DOI: 10.3892/or.2016.4801] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 04/11/2016] [Indexed: 11/06/2022] Open
Abstract
Manumycin A (Manu A) is a natural product isolated from Streptomyces parvulus and has been reported to have anti-carcinogenic and anti-biotic properties. However, neither its molecular mechanism nor its molecular targets are well understood. Thus, the aim of the present study was to explore the possibility that Manu A has cancer preventive and chemotherapeutic effects on malignant pleural mesothelioma (MPM) through regulation of Sp1 and induction of mitochondrial cell death pathway. Manu A inhibited the cell viability of MSTO-211H and H28 cells in a concentration‑dependent manner as determined by MTS assay. IC50 values were calculated as 8.3 and 4.3 µM in the MSTO-311H and H28 cells following 48 h incubation, respectively. Manu A induced a significant increase in apoptotic indices as shown by DAPI staining, Annexin V assay, multi-caspase activity and mitochondrial membrane potential assay. The downregulation of Sp1 mRNA and protein expression by Manu A led to apoptosis by suppressing Sp1-regulated proteins (cyclin D1, Mcl-1 and survivin). Manu A decreased the protein levels of BID, Bcl-xL and PARP while it increased Bax levels. Manu A caused depolarization of the mitochondrial membrane with induction of CHOP, DR4 and DR5. Our results demonstrated that Manu A exerted anticancer effects by inducing apoptosis via inhibition of the Sp1-related signaling pathway in human MPM.
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Affiliation(s)
- Ka Hwi Kim
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Jeonnam 534-729, Republic of Korea
| | - Jung-Il Chae
- Department of Dental Pharmacology, School of Dentistry and Institute of Oral Bioscience, BK21 Plus, Chonbuk National University, Jeonju 651-756, Republic of Korea
| | - Hana Oh
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Jeonnam 534-729, Republic of Korea
| | - Jin Hyoung Cho
- Department of Dental Pharmacology, School of Dentistry and Institute of Oral Bioscience, BK21 Plus, Chonbuk National University, Jeonju 651-756, Republic of Korea
| | - Ra-Ham Lee
- Department of Dental Pharmacology, School of Dentistry and Institute of Oral Bioscience, BK21 Plus, Chonbuk National University, Jeonju 651-756, Republic of Korea
| | - Goo Yoon
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Jeonnam 534-729, Republic of Korea
| | - Seung-Sik Cho
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Jeonnam 534-729, Republic of Korea
| | - Young-Sik Cho
- College of Pharmacy, Keimyung University, Dalseo-gu, Daegu 704-701, Republic of Korea
| | - Mee-Hyun Lee
- The China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan 450001, P.R. China
| | - Kangdong Liu
- The China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan 450001, P.R. China
| | - Hyun-Jeong Lee
- Division of Animal Genomics and Bioinformatics, National Institute of Animal Science, Rural Development Administration, Suwon 441-706, Republic of Korea
| | - Jung-Hyun Shim
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Jeonnam 534-729, Republic of Korea
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YiQiFuMai Powder Injection Ameliorates Cerebral Ischemia by Inhibiting Endoplasmic Reticulum Stress-Mediated Neuronal Apoptosis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:5493279. [PMID: 27087890 PMCID: PMC4818822 DOI: 10.1155/2016/5493279] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 02/04/2016] [Indexed: 02/05/2023]
Abstract
YiQiFuMai (YQFM) powder injection as a modern preparation derived from Sheng Mai San, a traditional Chinese medicine, has been widely used in the treatment of cardiovascular and cerebrovascular diseases. However, its neuroprotective effect and underlying mechanism in cerebral ischemia remain to be explored. The present study was designed to investigate the neuroprotective effect of YQFM on endoplasmic reticulum (ER) stress-mediated neuronal apoptosis in the permanent middle cerebral artery occlusion- (MCAO-) injured mice and the oxygen-glucose deprivation- (OGD-) induced pheochromocytoma (PC12) cells. The results showed that single administration of YQFM (1.342 g/kg, i.p.) could reduce the brain infarction and improve the neurological deficits and the cerebral blood flow (CBF) after MCAO for 24 h in mice. Moreover, incubation with YQFM (100, 200, and 400 μg/mL) could increase the cell viability, decrease the caspase-3 activity, and inhibit the cell apoptosis in OGD-induced PC12 cells for 12 h. In addition, YQFM treatment could significantly modulate cleaved caspase-3 and Bcl-2 expressions and inhibit the expressions of ER stress-related marker proteins and signaling pathways in vivo and in vitro. In conclusion, our findings provide the first evidence that YQFM ameliorates cerebral ischemic injury linked with modulating ER stress-related signaling pathways, which provided some new insights for its prevention and treatment of cerebral ischemia diseases.
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Guo F, Chen H, Chang J, Zhang L. Mutation R273H confers p53 a stimulating effect on the IGF-1R-AKT pathway via miR-30a suppression in breast cancer. Biomed Pharmacother 2016; 78:335-341. [PMID: 26898459 DOI: 10.1016/j.biopha.2016.01.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 01/23/2016] [Accepted: 01/25/2016] [Indexed: 01/09/2023] Open
Abstract
p53 is the most highly mutated tumor suppressor in human malignancies. A wide array of p53 mutations has been revealed to play pivotal roles during cancer progression, which abolish anti-tumor functions of wild type p53 but also elicit tumorigenic effects by activating a diverse subset of downstream molecules. R273H mutation of p53 has been closely implicated in human cancer. Here we report miR-30a as a novel downstream target of p53 R273H mutant, which binds to the promoter region to repress miR-30a expression. Consequently, p53 R273H mutant enhances the migratory capabilities of tumor cells that are compromised by exogenous miR-30a over-expression. Our further investigation indicates that p53 R273H mutation unleashes the inhibition effect of miR-30a on IGF-1R expression, thus leading to elevated activation of IGF-1R-AKT signaling cascade in tumor cells.
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Affiliation(s)
- Fangdong Guo
- Department of breast and thyroid surgery, The Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, China.
| | - Hongshen Chen
- Department of breast and thyroid surgery, The Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, China
| | - Jian Chang
- The Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116044, China
| | - Lin Zhang
- The Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116044, China
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Iron chelator-induced apoptosis via the ER stress pathway in gastric cancer cells. Tumour Biol 2016; 37:9709-19. [PMID: 26803514 DOI: 10.1007/s13277-016-4878-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 01/15/2016] [Indexed: 01/17/2023] Open
Abstract
Many reports have shown the anticancer effects of iron deficient on cancer cells, but the effects of iron-chelators on gastric cancer have not been clearly elucidated. Recently, we reported that iron chelators induced an antiproliferative effect in human malignant lymphoma and myeloid leukemia cells. In the present study, we investigated the antitumor activity of these two iron-chelating agents, deferoxamine (DFO) and deferasirox (DFX), with gastric cancer cell lines, and their apoptosis-inducing effects as the potential mechanism. We found that iron chelators displayed significant antiproliferative activity in human gastric cancer cell lines, which may be attributed to their induction of G1 phase arrest and apoptosis. We also found that iron chelators induced reactive oxygen species (ROS) production, resulting in the activation of both c-Jun N-terminal kinase (JNK) and endoplasmic reticulum (ER) stress apoptotic pathways in gastric cancer cells. Taken together, our data suggest that iron chelators induced apoptosis in gastric cancer, involving ROS formation ER stress and JNK activation.
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Wang H, Hu XX, Lu H. Changes of TRB3 and CHOP expression in nonalcoholic fatty liver disease in rats. Shijie Huaren Xiaohua Zazhi 2015; 23:4636-4642. [DOI: 10.11569/wcjd.v23.i29.4636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the changes of Tribbles related protein 3 (TRB3) and CCAAT/enhancer-binding protein homologous protein (CHOP) expression in nonalcoholic fatty liver disease (NAFLD) in rats.
METHODS: Thirty Wistar rats were randomly divided into a normal control group and an NAFLD group. The rats of the NAFLD group were given a high-fat, high-glucose diet for 16 weeks to induce NAFLD, while the normal control group was given an ordinary diet. The levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein (LDL) and high-density lipoprotein (HDL) were detected with an automatic biochemical analyzer. The expression of TRB3 and CHOP mRNAs in the liver was detected by real-time quantitative PCR. The expression of TRB3 and CHOP proteins in liver tissue was detected by immunohistochemistry. Cell apoptosis was detected by flow cytometry.
RESULTS: The levels of TC, TG, and LDL in the NAFLD group were significantly higher than those in the normal control group (P < 0.05), while the level of HDL was lower than that in the normal control group (P < 0.05). Compared with the normal group, levels of TRB3 and CHOP mRNAs and proteins in the NAFLD group were significantly increased (mRNA: P < 0.05 or P < 0.01; protein: P < 0.01). Flow cytometry analysis showed that the apoptosis in the NAFLD group was higher than that in the normal control group.
CONCLUSION: The changes of TRB3 and CHOP expression may play important roles in the development of NAFLD.
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