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Xun C, Zhang Y, Zheng X, Qin S. A novel AKR1C3 specific prodrug AST-3424 and its combination therapy in hepatocellular carcinoma. J Pharmacol Sci 2023; 152:69-75. [PMID: 37169481 DOI: 10.1016/j.jphs.2023.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 02/08/2023] [Accepted: 03/27/2023] [Indexed: 05/13/2023] Open
Abstract
OBJECTIVE AST-3424 is a novel specific aldo-keto reductase 1C3 (AKR1C3) prodrug that releases a DNA alkylating reagent upon reduction by AKR1C3. This study aimed to evaluate the efficacy and safety of AST-3424 in patient-derived tumor xenograft (PDTX) model and orthotopic model against hepatocellular carcinoma (HCC). MATERIALS AND METHOD PDTX models derived from three HCC patients and orthotopic mice models using HepG2 cells were developed. The mice were treated with AST-3424 alone or combined with other drugs (oxaliplatin, apatinib, sorafenib and elemene in PDTX models, oxaliplatin and 5- fluorouracil in orthotopic models). The tumor volume and weight, as well as the mice weight were assessed. The liver tumor and transplanted tumor were removed for histological, immunohistochemical and Western blot detection in orthotopic model experiments. RESULTS AST-3424 could inhibit tumor growth in HCC PDTX models and orthotopic models, with no difference in safety compared with other marketed drugs, and the drug combination did not increase toxicity. The inhibitory effect of combination treatment was more obvious than which used alone. The reduction of AKR1C3 expression was negatively correlated with AST-3424 dose. CONCLUSION AST-3424 had a promising effect against HCC in PDTX model and orthotopic model with good safety. It could promote the sensitivity of other drugs without increasing toxicity. Clinical trials are warranted to further certify its antitumor effect and safety.
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Affiliation(s)
- Chen Xun
- Department of Medical Oncology Center, Bayi Affiliated Hospital of Nanjing University of Chinese Medicine; Yanggongjing 34 Biao No. 34, Qinhuai Distrct, Nanjing City, Jiangsu Province, 210002, China
| | - Yu Zhang
- Nanjing University of Chinese Medicine; No. 138 Xianlin Road, Qixia District, Nanjing City, Jiangsu Province, 210023, China
| | - Xia Zheng
- Department of Oncology, Jiangsu Provincial Hospital of Chinese Medicine; No. 200 Xianlin Road, Qixia District, Nanjing City, Jiangsu Province, 210023, China
| | - Shukui Qin
- Department of Medical Oncology Center, Bayi Affiliated Hospital of Nanjing University of Chinese Medicine; Yanggongjing 34 Biao No. 34, Qinhuai Distrct, Nanjing City, Jiangsu Province, 210002, China.
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2
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The miR-27a-3p/FTO axis modifies hypoxia-induced malignant behaviors of glioma cells. Acta Biochim Biophys Sin (Shanghai) 2023; 55:103-116. [PMID: 36718644 PMCID: PMC10157519 DOI: 10.3724/abbs.2023002] [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: 02/01/2023] Open
Abstract
<p indent="0mm">Glioblastoma multiforme (GBM) is one of the most malignant types of central nervous system (CNS) tumors. N6-methyladenine (m6A) RNA modification is a main type of RNA modification in eukaryotic cells. In this study, we find that the m6A RNA methylation eraser FTO is dramatically downregulated in glioma samples and cell lines, particularly in intermediate and core regions and hypoxia-challenged glioma cells. <italic>In vitro</italic>, FTO overexpression inhibits the hypoxia-induced capacities of glioma cells to proliferate, migrate and invade, and decreases the percentage of cells with m6A RNA methylation. <italic>In vivo</italic>, FTO overexpression inhibits tumor growth in the xenograft model and decreases the protein levels of migration markers, including Vimentin and Twist. miR-27a-3p is upregulated within glioma intermediate and core regions and hypoxia-challenged glioma cells. miR-27a-3p inhibits the expression of FTO via direct binding to FTO. miR-27a-3p overexpression promotes hypoxia-challenged glioma cell aggressiveness, whereas FTO overexpression partially diminishes the oncogenic effects of miR-27a-3p overexpression. FTO overexpression promotes the nuclear translocation of FOXO3a and upregulates the expression levels of the <sc>FOXO3a</sc> downstream targets BIM, BNIP3, BCL-6, and PUMA, possibly by interacting with FOXO3a. Conclusively, FTO serves as a tumor suppressor in glioma by suppressing hypoxia-induced malignant behaviors of glioma cells, possibly by promoting the nuclear translocation of FOXO3a and upregulating FOXO3a downstream targets. miR-27a-3p is a major contributor to FTO downregulation in glioma under hypoxia. </p>.
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Li S, Hu X, Yu S, Yi P, Chen R, Huang Z, Huang Y, Huang Y, Zhou R, Fan X. Hepatic stellate cell-released CXCL1 aggravates HCC malignant behaviors through the MIR4435-2HG/miR-506-3p/TGFB1 axis. Cancer Sci 2022; 114:504-520. [PMID: 36169092 PMCID: PMC9899617 DOI: 10.1111/cas.15605] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 09/08/2022] [Accepted: 09/15/2022] [Indexed: 02/07/2023] Open
Abstract
Hepatic stellate cell (HSC) activation is a critical event in the development of hepatic fibrosis and hepatocellular carcinoma (HCC). By the release of soluble cytokines, chemokines, and chemotaxis, HSCs affect HCC cell phenotypes through a complex tumor microenvironment. In this study, weighted gene co-expression network analysis (WGCNA) was used to identify the TGF-β signaling pathway as a key signaling pathway in Hep3B cells cultured in HSC conditioned medium. MIR4435-2HG is a hub lncRNA associated with the TGF-β signaling pathway and HSC activation. HSC-condition medium (CM) culture induced HCC cell malignant behaviors, which were partially reversed by MIR4435-2HG silencing. miR-506-3p directly bound to MIR4435-2HG and the 3'UTR of TGFB1. Similarly, overexpression of miR-506-3p also attenuated HSC-CM-induced malignant behavior of HCC cells. In HSC-CM cultured HCC cells, the effects of MIR4435-2HG knockdown on TGFB1 expression and HCC cell phenotypes were partially reversed by miR-506-3p inhibition. HSCs affected HCC cell phenotypes by releasing CXCL1. In an orthotopic xenotransplanted tumor model of HCC cells plus HSCs in mice, CXCR2 knockdown in HCC cells significantly inhibited tumorigenesis, which was partially reversed by MIR4435-2HG overexpression in HCC cells. In HCC tissue samples, the levels of CXCL1, TGF-β1, and MIR4435-2HG were upregulated, while miR-506-3p expression was downregulated. In conclusion, HSC-released CXCL1 aggravated HCC cell malignant behaviors through the MIR4435-2HG/miR-506-3p/TGFB1 axis. In addition to CXCL1, the MIR4435-2HG/miR-506-3p/TGFB1 axis might also be the underlying target for HCC therapy.
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Affiliation(s)
- Shaling Li
- Hunan Key Laboratory of Viral Hepatitis, Department of Infectious Disease, Xiangya HospitalCentral South UniversityChangshaChina
| | - Xingwang Hu
- Hunan Key Laboratory of Viral Hepatitis, Department of Infectious Disease, Xiangya HospitalCentral South UniversityChangshaChina
| | - Songman Yu
- Hunan Key Laboratory of Viral Hepatitis, Department of Infectious Disease, Xiangya HospitalCentral South UniversityChangshaChina
| | - Panpan Yi
- Hunan Key Laboratory of Viral Hepatitis, Department of Infectious Disease, Xiangya HospitalCentral South UniversityChangshaChina
| | - Ruochan Chen
- Hunan Key Laboratory of Viral Hepatitis, Department of Infectious Disease, Xiangya HospitalCentral South UniversityChangshaChina
| | - Zebing Huang
- Hunan Key Laboratory of Viral Hepatitis, Department of Infectious Disease, Xiangya HospitalCentral South UniversityChangshaChina
| | - Yan Huang
- Hunan Key Laboratory of Viral Hepatitis, Department of Infectious Disease, Xiangya HospitalCentral South UniversityChangshaChina
| | - Yun Huang
- Department of Surgery, Xiangya HospitalCentral South UniversityChangshaChina
| | - Rongrong Zhou
- Hunan Key Laboratory of Viral Hepatitis, Department of Infectious Disease, Xiangya HospitalCentral South UniversityChangshaChina
| | - Xuegong Fan
- Hunan Key Laboratory of Viral Hepatitis, Department of Infectious Disease, Xiangya HospitalCentral South UniversityChangshaChina
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4
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He Z, Cheng M, Hu J, Liu L, Liu P, Chen L, Cao D, Tang J. miR-1297 sensitizes glioma cells to temozolomide (TMZ) treatment through targeting adrenomedullin (ADM). J Transl Med 2022; 20:443. [PMID: 36183123 PMCID: PMC9526964 DOI: 10.1186/s12967-022-03647-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 09/18/2022] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Gliomas account for about 80% of all malignant brain and other central nervous system (CNS) tumors. Temozolomide (TMZ) resistance represents a major treatment hurdle. Adrenomedullin (ADM) has been reported to induce glioblastoma cell growth. METHODS Cell viability was measured using the CCK-8 assay. The apoptosis analysis was performed using the Annexin V-FITC Apoptosis Detection Kit. The mitochondrial membrane potential was determined by JC-1 staining. A nude mouse tumor assay was used to detect tumor formation. Hematoxylin and eosin (H&E) and immunohistochemical (IHC) staining were performed in tissue sections. Activation of Akt and Erk and expression of apoptosis-related proteins were determined by immunoblotting. RESULTS ADM expression has been found upregulated in TMZ -resistant glioma samples based on bioinformatics and experimental analyses. Knocking down ADM in glioma cells enhanced the suppressive effects of TMZ on glioma cell viability, promotive effects on cell apoptosis, and inhibitory effects on mitochondrial membrane potential. Moreover, ADM knockdown also enhanced TMZ effects on Bax/Bcl-2, Akt phosphorylation, and Erk1/2 phosphorylation. Bioinformatics and experimental investigation indicated that miR-1297 directly targeted ADM and inhibited ADM expression. miR-1297 overexpression exerted similar effects to ADM knockdown on TMZ-treated glioma cells. More importantly, under TMZ treatment, inhibition of miR-1297 attenuated TMZ treatment on glioma cells; ADM knockdown partially attenuated the effects of miR-1297 inhibition on TMZ-treated glioma cells. CONCLUSIONS miR-1297 sensitizes glioma cells to TMZ treatment through targeting ADM. The Bax/Bcl-2, Akt, and Erk1/2 signaling pathways, as well as mitochondrial functions might be involved.
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Affiliation(s)
- Zongze He
- Department of Neurosurgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, No.32 West Second Section First Ring Road, Chengdu, 610072, Sichuan, China
- Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, 610072, China
| | - Meixiong Cheng
- Department of Neurosurgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, No.32 West Second Section First Ring Road, Chengdu, 610072, Sichuan, China
| | - Junting Hu
- Department of Neurosurgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, No.32 West Second Section First Ring Road, Chengdu, 610072, Sichuan, China
| | - Lingtong Liu
- Department of Neurosurgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, No.32 West Second Section First Ring Road, Chengdu, 610072, Sichuan, China
| | - Ping Liu
- Department of Neurosurgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, No.32 West Second Section First Ring Road, Chengdu, 610072, Sichuan, China
| | - Longyi Chen
- Department of Neurosurgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, No.32 West Second Section First Ring Road, Chengdu, 610072, Sichuan, China.
| | - Deqian Cao
- Department of Neurosurgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, No.32 West Second Section First Ring Road, Chengdu, 610072, Sichuan, China.
| | - Jian Tang
- Department of Neurosurgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, No.32 West Second Section First Ring Road, Chengdu, 610072, Sichuan, China.
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Cheng M, Wang Q, Chen L, Zhao D, Tang J, Xu J, He Z. LncRNA UCA1/miR-182-5p/MGMT axis modulates glioma cell sensitivity to TMZ through MGMT-related DNA damage pathways. Hum Pathol 2022; 123:59-73. [DOI: 10.1016/j.humpath.2022.02.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/16/2022] [Accepted: 02/18/2022] [Indexed: 12/30/2022]
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6
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Habibe JJ, Clemente-Olivo MP, de Vries CJ. How (Epi)Genetic Regulation of the LIM-Domain Protein FHL2 Impacts Multifactorial Disease. Cells 2021; 10:2611. [PMID: 34685595 PMCID: PMC8534169 DOI: 10.3390/cells10102611] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 01/13/2023] Open
Abstract
Susceptibility to complex pathological conditions such as obesity, type 2 diabetes and cardiovascular disease is highly variable among individuals and arises from specific changes in gene expression in combination with external factors. The regulation of gene expression is determined by genetic variation (SNPs) and epigenetic marks that are influenced by environmental factors. Aging is a major risk factor for many multifactorial diseases and is increasingly associated with changes in DNA methylation, leading to differences in gene expression. Four and a half LIM domains 2 (FHL2) is a key regulator of intracellular signal transduction pathways and the FHL2 gene is consistently found as one of the top hyper-methylated genes upon aging. Remarkably, FHL2 expression increases with methylation. This was demonstrated in relevant metabolic tissues: white adipose tissue, pancreatic β-cells, and skeletal muscle. In this review, we provide an overview of the current knowledge on regulation of FHL2 by genetic variation and epigenetic DNA modification, and the potential consequences for age-related complex multifactorial diseases.
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Affiliation(s)
- Jayron J. Habibe
- Department of Medical Biochemistry, Amsterdam University Medical Centers, Amsterdam Cardiovascular Sciences, and Amsterdam Gastroenterology, Endocrinology and Metabolism, 1105 AZ Amsterdam, The Netherlands; (J.J.H.); (M.P.C.-O.)
- Department of Physiology, Amsterdam University Medical Centers, Amsterdam Cardiovascular Sciences, 1081 HV Amsterdam, The Netherlands
| | - Maria P. Clemente-Olivo
- Department of Medical Biochemistry, Amsterdam University Medical Centers, Amsterdam Cardiovascular Sciences, and Amsterdam Gastroenterology, Endocrinology and Metabolism, 1105 AZ Amsterdam, The Netherlands; (J.J.H.); (M.P.C.-O.)
| | - Carlie J. de Vries
- Department of Medical Biochemistry, Amsterdam University Medical Centers, Amsterdam Cardiovascular Sciences, and Amsterdam Gastroenterology, Endocrinology and Metabolism, 1105 AZ Amsterdam, The Netherlands; (J.J.H.); (M.P.C.-O.)
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7
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Zhao H, Du P, Peng R, Peng G, Yuan J, Liu D, Liu Y, Mo X, Liao Y. Long Noncoding RNA OR7E156P/miR-143/HIF1A Axis Modulates the Malignant Behaviors of Glioma Cell and Tumor Growth in Mice. Front Oncol 2021; 11:690213. [PMID: 34422645 PMCID: PMC8377393 DOI: 10.3389/fonc.2021.690213] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 07/19/2021] [Indexed: 12/28/2022] Open
Abstract
Gliomas are characterized by high incidence, recurrence and mortality all of which are significant challenges to efficacious clinical treatment. The hypoxic microenvironment in the inner core and intermediate layer of the tumor mass of gliomas is a critical contributor to glioma pathogenesis. In this study, we identified an upregulated lncRNA, OR7E156P, in glioma was identified. The silencing of OR7E156P inhibited cell invasion and DNA synthesis in vitro and tumor growth in vivo. OR7E156P was intricately linked to the HIF1A pathway. Hypoxia could induce OR7E156P expression, whereas OR7E156P silencing decreased HIF1A protein levels under hypoxic conditions. Hypoxia promoted glioma cell invasion and DNA synthesis, and HUVEC tube formation, whereas OR7E156P silencing partially reversed the cellular effects of hypoxia. HIF1A overexpression promoted, whereas OR7E156P silencing inhibited tumor growth; the inhibitory effects of OR7E156P silencing on tumor growth were partially reversed by HIF1A overexpression. miR-143 directly targeted OR7E156P and HIF1A, respectively. miR-143 inhibition increased HIF1A protein levels, promoted glioma cell invasion and DNA synthesis. Moreover, they enhanced HUVEC tube formation, whereas OR7E156P silencing partially reversed the cellular effects of miR-143 inhibition. HIF1A targeted the promoter region of miR-143 and inhibited miR-143 expression. Altogether a regulatory axis consisting of OR7E156P, miR-143, and HIF1A, was identified which is deregulated in glioma, and the process of the OR7E156P/miR-143/HIF1A axis modulating glioma cell invasion through ZEB1 and HUVEC tube formation through VEGF was demonstrated.
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Affiliation(s)
- Haiting Zhao
- Department of Neurosurgery, Xiangya Hospital, The Central South University (CSU), Changsha, China.,Department of Neurology, Xiangya Hospital, The Central South University (CSU), Changsha, China
| | - Peng Du
- Department of Neurosurgery, The Second Affiliated Hospital, Xinjiang Medical University, Urumqi, China
| | - Renjun Peng
- Department of Neurosurgery, Xiangya Hospital, The Central South University (CSU), Changsha, China
| | - Gang Peng
- Department of Neurosurgery, Xiangya Hospital, The Central South University (CSU), Changsha, China
| | - Jian Yuan
- Department of Neurosurgery, Xiangya Hospital, The Central South University (CSU), Changsha, China
| | - Dingyang Liu
- Department of Neurosurgery, Xiangya Hospital, The Central South University (CSU), Changsha, China
| | - Yi Liu
- Department of Neurosurgery, Xiangya Hospital, The Central South University (CSU), Changsha, China
| | - Xin Mo
- Department of Neurosurgery, Xiangya Hospital, The Central South University (CSU), Changsha, China
| | - Yiwei Liao
- Department of Neurosurgery, Xiangya Hospital, The Central South University (CSU), Changsha, China
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Du P, Liao Y, Zhao H, Zhang J, Mu K. ANXA2P2/miR-9/LDHA axis regulates Warburg effect and affects glioblastoma proliferation and apoptosis. Cell Signal 2020; 74:109718. [PMID: 32707073 DOI: 10.1016/j.cellsig.2020.109718] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/15/2020] [Accepted: 07/15/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND Aerobic glycolysis is a unique tumor cell phenotype considered as one of the hallmarks of cancer. Aerobic glycolysis can accelerate tumor development by increasing glucose uptake and lactate production. In the present study, lactate dehydrogenase A (LDHA) is significantly increased within glioma tissue samples and cells, further confirming the oncogenic role of LDHA within glioma. METHODS Hematoxylin and eosin (H&E) and immunohistochemical (IHC) staining were applied for histopathological examination. The protein levels of LDHA, transporter isoform 1 (GLUT1), hexokinase 2 (HK2), phosphofructokinase (PFK) in target cells were detected by Immunoblotting. The predicted miR-9 binding to lncRNA Annexin A2 Pseudogene 2 (ANXA2P2) or the 3' untranslated region (UTR) of LDHA was verified using Luciferase reporter assay. Cell viability or apoptosis were examined by MTT assay or Flow cytometry. Intracellular glucose and Lactate levels were measured using glucose assay kit and lactate colorimetric assay kit. RESULTS The expression of ANXA2P2 showed to be dramatically upregulated within glioma tissue samples and cells. Knocking down ANXA2P2 within glioma cells significantly inhibited cell proliferation and aerobic glycolysis, as manifested as decreased lactate and increased glucose in culture medium, and downregulated protein levels of glycolysis markers, GLUT1, HK2, PFK, as well as LDHA. miR-9 was predicted to target both lncRNA ANXA2P2 and LDHA. The overexpression of miR-9 suppressed the cell proliferation and aerobic glycolysis of glioma cells. Notably, miR-9 could directly bind to LDHA 3'UTR to inhibit LDHA expression and decrease the protein levels of LDHA. ANXA2P2 competitively targeted miR-9, therefore counteracting miR-9-mediated repression on LDHA. Within tissues, miR-9 exhibited a negative correlation with ANXA2P2 and LDHA, respectively, whereas ANXA2P2 and LDHA exhibited a positive correlation with each other. CONCLUSIONS In conclusion, ANXA2P2/miR-9/LDHA axis modulates the aerobic glycolysis progression in glioma cells, therefore affecting glioma cell proliferation.
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Affiliation(s)
- Peng Du
- Department of Neurosurgery, Xiangya Hospital, The Central South University, Changsha 410008, PR China; Department of Neurosurgery, The Second Affiliated Hospital, Xinjiang Medical University, Urumqi 830063, PR China
| | - Yiwei Liao
- Department of Neurosurgery, Xiangya Hospital, The Central South University, Changsha 410008, PR China.
| | - Haiting Zhao
- Department of Neurology, Xiangya Hospital, The Central South University, Changsha 410008, PR China
| | - Jingjing Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, Xinjiang Medical University, Urumqi 830063, PR China
| | - Kere Mu
- Department of Neurosurgery, The Second Affiliated Hospital, Xinjiang Medical University, Urumqi 830063, PR China
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Kroone C, Vos M, Rademakers T, Kuijpers M, Hoogenboezem M, van Buul J, Heemskerk JWM, Ruf W, van Hylckama Vlieg A, Versteeg HH, Goumans MJ, de Vries CJM, Kurakula K. LIM-only protein FHL2 attenuates vascular tissue factor activity, inhibits thrombus formation in mice and FHL2 genetic variation associates with human venous thrombosis. Haematologica 2019; 105:1677-1685. [PMID: 31467128 PMCID: PMC7271603 DOI: 10.3324/haematol.2018.203026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 08/26/2019] [Indexed: 12/21/2022] Open
Abstract
Bleeding disorders and thrombotic complications are major causes of morbidity and mortality with many cases being unexplained. Thrombus formation involves aberrant expression and activation of tissue factor (TF) in vascular endothelial and smooth muscle cells. Here, we sought to identify factors that modulate TF gene expression and activity in these vascular cells. The LIM-only protein FHL2 is a scaffolding protein that modulates signal transduction pathways with crucial functions in endothelial and smooth muscle cells. However, the role of FHL2 in TF regulation and thrombosis remains unexplored. Using a murine model of venous thrombosis in mesenteric vessels, we demonstrated that FHL2 deficiency results in exacerbated thrombus formation. Gain- and loss-of-function experiments revealed that FHL2 represses TF expression in endothelial and smooth muscle cells through inhibition of the transcription factors nuclear factor κB and activating protein-1. Furthermore, we observed that FHL2 interacts with the cytoplasmic tail of TF. In line with our in vivo observations, FHL2 decreases TF activity in endothelial and smooth muscle cells whereas FHL2 knockdown or deficiency results in enhanced TF activity. Finally, the FHL2 single nucleotide polymorphism rs4851770 was associated with the risk of venous thrombosis in a large population of venous thrombosis cases and control subjects from 12 studies (INVENT consortium). Altogether, our results highlight functional involvement of FHL2 in TF-mediated coagulation and identify FHL2 as a novel gene associated with venous thrombosis in humans.
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Affiliation(s)
- Chantal Kroone
- The Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center (UMC), Leiden, the Netherlands
| | - Mariska Vos
- Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Timo Rademakers
- Department of Molecular Cell Biology, Sanquin Research, Amsterdam, the Netherlands
| | - Marijke Kuijpers
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht UMC, Maastricht, The Netherlands
| | - Mark Hoogenboezem
- Department of Molecular Cell Biology, Sanquin Research, Amsterdam, the Netherlands
| | - Jaap van Buul
- Department of Molecular Cell Biology, Sanquin Research, Amsterdam, the Netherlands
| | - Johan W M Heemskerk
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht UMC, Maastricht, The Netherlands
| | - Wolfram Ruf
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, USA.,Center for Thrombosis and Hemostasis Mainz, Germany
| | | | - Henri H Versteeg
- The Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center (UMC), Leiden, the Netherlands
| | - Marie-José Goumans
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands
| | - Carlie J M de Vries
- Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Kondababu Kurakula
- Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands .,Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands
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10
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Lee YJ, Kim WI, Kim SY, Cho SW, Nam HS, Lee SH, Cho MK. Flavonoid morin inhibits proliferation and induces apoptosis of melanoma cells by regulating reactive oxygen species, Sp1 and Mcl-1. Arch Pharm Res 2019; 42:531-542. [PMID: 31049822 DOI: 10.1007/s12272-019-01158-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 04/22/2019] [Indexed: 01/21/2023]
Abstract
Reactive oxygen species (ROS) is associated with cancer progression in different cancers, including melanoma. It also affects specificity protein (Sp1), a transcription factor. Flavonoid morin is known to inhibit growth of cancer cells, including lung cancer and breast cancer. Herein, we hypothesized that morin can inhibit cancer activities in melanoma by altering ROS generation. The aim of this study is to determine the effects of morin and its underlying mechanisms in melanoma cells. Effects of morin on cell proliferation and apoptosis were determined using standardized assays. Changes in pro-apoptotic and anti-apoptotic proteins were analyzed by western blot analysis. Cellular ROS levels and mitochondrial function were evaluated by measuring DCF-DA fluorescence and rhodamine-123 fluorescence intensities, respectively. Morin induced ROS production and apoptosis, as presented by increased proportion of cells with Annexin V-PE(+) staining and sub-G0/G1 peak in cell cycle analysis. It also downregulated Sp1, Mcl-1, Bcl-2, and caspase-3 but upregulated cleaved caspase-3, Bax, and PUMA. In immunohistochemical staining, Sp1 was overexpressed in melanoma tissues compared to normal skin tissues. Collectively, our data suggest that morin can induce apoptosis of melanoma cells by regulating pro-apoptotic and anti-apoptotic proteins through ROS, and may be a potential substance for treatment of melanoma.
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Affiliation(s)
- Yoon Jin Lee
- Molecular Cancer Research, Soonchunhyang University College of Medicine, Cheonan, 31151, Republic of Korea
| | - Woo Il Kim
- Department of Dermatology, Soonchunhyang University Hospital, Seoul, 04401, Republic of Korea
| | - Soo Young Kim
- Department of Dermatology, Soonchunhyang University Hospital, Seoul, 04401, Republic of Korea
| | - Sung Woo Cho
- Molecular Cancer Research, Soonchunhyang University College of Medicine, Cheonan, 31151, Republic of Korea
| | - Hae Seon Nam
- Molecular Cancer Research, Soonchunhyang University College of Medicine, Cheonan, 31151, Republic of Korea
| | - Sang Han Lee
- Molecular Cancer Research, Soonchunhyang University College of Medicine, Cheonan, 31151, Republic of Korea
| | - Moon Kyun Cho
- Department of Dermatology, Soonchunhyang University Hospital, Seoul, 04401, Republic of Korea.
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Xu H, Jiang J, Zhang J, Cheng L, Pan S, Li Y. MicroRNA-375 inhibits esophageal squamous cell carcinoma proliferation through direct targeting of SP1. Exp Ther Med 2018; 17:1509-1516. [PMID: 30867685 PMCID: PMC6396021 DOI: 10.3892/etm.2018.7106] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 09/28/2018] [Indexed: 12/20/2022] Open
Abstract
Several studies have shown that microRNA-375 (miR-375) is frequently downregulated in several types of human cancer including gastric cancer, colorectal cancer and oral squamous cell carcinoma. However, the role of miR-375 in human esophageal cancer remains unknown. In the current study, the expression level of miR-375 was analyzed in 43 esophageal squamous cell carcinoma (ESCC) tissue and matched adjacent normal tissue samples from patients with ESCC by reverse transcription-quantitative polymerase chain reaction. In addition, the expression level of miR-375 was analyzed in ESCC cell lines (KYSE450 and KYSE150) and the human esophageal epithelial cell line Het-1A by the same method. The expression level of miR-375 was significantly downregulated in ESCC tissue samples and cell lines compared with adjacent normal tissue samples and the human esophageal epithelial cell line, respectively. The effect of miR-375 on ESCC cell proliferation was detected by cell counting kit-8 (CCK-8) and colony formation assays. miR-375 overexpression significantly decreased ESCC cell proliferation and colony formation. Bioinformatics analysis was used to predict specificity protein 1 (SP1) as a target gene of miR-375 in ESCC, and this was verified by dual-luciferase assay. The present study demonstrated that SP1 regulates ESCC cell proliferation and colony formation through direct interaction with miR-375. In addition, the overall survival of patients with ESCC was analyzed using the Kaplan-Meier method and log-rank test. The results indicated that patients with ESCC with high miR-375 expression had a better survival rate compared with patients with ESCC with low miR-375 expression. Taken together, these results suggest that downregulated miR-375 promotes ESCC cell proliferation and colony formation via direct targeting of SP1, and this association may contribute to ESCC progression.
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Affiliation(s)
- Hui Xu
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China.,Department of Anesthesiology, The Third People's Hospital of Bengbu, Bengbu, Anhui 233000, P.R. China
| | - Jialong Jiang
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Jingjun Zhang
- Department of Anesthesiology, The Third People's Hospital of Bengbu, Bengbu, Anhui 233000, P.R. China
| | - Liang Cheng
- Department of Anesthesiology, The Third People's Hospital of Bengbu, Bengbu, Anhui 233000, P.R. China
| | - Song Pan
- Department of Anesthesiology, The Third People's Hospital of Bengbu, Bengbu, Anhui 233000, P.R. China
| | - Yuanhai Li
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
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12
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Chen Y, Liu J, Wang W, Xiang L, Wang J, Liu S, Zhou H, Guo Z. High expression of hnRNPA1 promotes cell invasion by inducing EMT in gastric cancer. Oncol Rep 2018; 39:1693-1701. [PMID: 29484423 PMCID: PMC5868405 DOI: 10.3892/or.2018.6273] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 02/09/2018] [Indexed: 12/20/2022] Open
Abstract
Advanced gastric cancer (GC) has a poor prognosis and its treatment strategies are not very efficient. Heterogeneous nuclear ribonucleoprotein A1 (hnRNPA1) has emerged as a plausible GC marker, however the role and molecular mechanism of hnRNPA1 in cell invasion and migration remains unknown. In the present study, the gene expression across normal and tumor tissue (GENT) database was used to evaluate the mRNA expression of hnRNPA1 in various types of cancer. Western blot analysis (WB) and immunohistochemistry (IHC) were performed to detect the protein expression of hnRNPA1 in GC tissues and adjacent non-tumor tissues. The expression of multiple oncogenes was detected by western blot analysis and quantitative RT-PCR in hnRNPA1 overexpressing GC cells. Soft agar colony formation, EdU incorporation, wound healing and invasion assays were applied to verify the role of hnRNPA1 in anchorage-independent cell growth, migration and invasion in GC cells. Epithelial-to-mesenchymal transition (EMT) markers were detected by immunofluorescence, western blot analysis and IHC in vitro. A nude mice model of metastasis carcinoma was established to confirm the role of hnRNPA1 during EMT in vivo. Our results revealed that hnRNPA1 was significantly upregulated in GC tissue. HnRNPA1 overexpression significantly induced cell growth, migration and invasion ability in GC cells. In addition, hnRNPA1 promoted EMT of GC cells in vitro and in vivo. These findings indicated that hnRNPA1 is highly expressed in GC and promoted invasion by inducing EMT transition in GC cells. Thus, hnRNPA1 may be a potential therapeutic target for GC.
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Affiliation(s)
- Yahua Chen
- Department of Gastroenterology, Longgang People's Hospital, Shenzhen, Guangdong 518172, P.R. China
| | - Jun Liu
- Department of Gastroenterology, Longgang People's Hospital, Shenzhen, Guangdong 518172, P.R. China
| | - Wei Wang
- Department of Gastroenterology, Longgang People's Hospital, Shenzhen, Guangdong 518172, P.R. China
| | - Li Xiang
- Department of Gastroenterology, Longgang People's Hospital, Shenzhen, Guangdong 518172, P.R. China
| | - Jide Wang
- Department of Gastroenterology, Longgang People's Hospital, Shenzhen, Guangdong 518172, P.R. China
| | - Side Liu
- Department of Gastroenterology, Longgang People's Hospital, Shenzhen, Guangdong 518172, P.R. China
| | - Hongyan Zhou
- Department of Pathology, The First People's Hospital of Xinxiang City, Xinxiang, Henan 453100, P.R. China
| | - Zheng Guo
- Department of Oncology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi 341000, P.R. China
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13
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Kim CK, He P, Bialkowska AB, Yang VW. SP and KLF Transcription Factors in Digestive Physiology and Diseases. Gastroenterology 2017; 152:1845-1875. [PMID: 28366734 PMCID: PMC5815166 DOI: 10.1053/j.gastro.2017.03.035] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 03/21/2017] [Accepted: 03/24/2017] [Indexed: 12/14/2022]
Abstract
Specificity proteins (SPs) and Krüppel-like factors (KLFs) belong to the family of transcription factors that contain conserved zinc finger domains involved in binding to target DNA sequences. Many of these proteins are expressed in different tissues and have distinct tissue-specific activities and functions. Studies have shown that SPs and KLFs regulate not only physiological processes such as growth, development, differentiation, proliferation, and embryogenesis, but pathogenesis of many diseases, including cancer and inflammatory disorders. Consistently, these proteins have been shown to regulate normal functions and pathobiology in the digestive system. We review recent findings on the tissue- and organ-specific functions of SPs and KLFs in the digestive system including the oral cavity, esophagus, stomach, small and large intestines, pancreas, and liver. We provide a list of agents under development to target these proteins.
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Affiliation(s)
- Chang-Kyung Kim
- Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY
| | - Ping He
- Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY
| | - Agnieszka B. Bialkowska
- Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY,Corresponding Authors: Vincent W. Yang & Agnieszka B. Bialkowska, Department of Medicine, Stony Brook University School of Medicine, HSC T-16, Rm. 020; Stony Brook, NY, USA. Tel: (631) 444-2066; Fax: (631) 444-3144; ;
| | - Vincent W. Yang
- Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY,Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY,Corresponding Authors: Vincent W. Yang & Agnieszka B. Bialkowska, Department of Medicine, Stony Brook University School of Medicine, HSC T-16, Rm. 020; Stony Brook, NY, USA. Tel: (631) 444-2066; Fax: (631) 444-3144; ;
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14
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Bajpai R, Nagaraju GP. Specificity protein 1: Its role in colorectal cancer progression and metastasis. Crit Rev Oncol Hematol 2017; 113:1-7. [PMID: 28427500 DOI: 10.1016/j.critrevonc.2017.02.024] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Indexed: 01/20/2023] Open
Abstract
Specificity protein 1 (Sp1) is a widely expressed transcription factor that plays an important role in the promotion of oncogenes required for tumor survival, progression and metastasis. Sp1 is highly expressed in several cancers including colorectal cancer (CRC) and is related to poor prognosis. Therefore, targeting Sp1 is a rational for CRC therapy. In this review, we will recapitulate the current understanding of Sp1 signaling, its molecular mechanisms, and its potential involvement in CRC growth, progression and metastasis. We will also discuss the current therapeutic drugs for CRC and their mechanism of action via Sp1.
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Affiliation(s)
- Richa Bajpai
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, GA, 30322, USA
| | - Ganji Purnachandra Nagaraju
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, GA, 30322, USA.
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15
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Yan Q, Zhang W, Wu Y, Wu M, Zhang M, Shi X, Zhao J, Nan Q, Chen Y, Wang L, Cheng T, Li J, Bai Y, Liu S, Wang J. KLF8 promotes tumorigenesis, invasion and metastasis of colorectal cancer cells by transcriptional activation of FHL2. Oncotarget 2016; 6:25402-17. [PMID: 26320172 PMCID: PMC4694840 DOI: 10.18632/oncotarget.4517] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 07/03/2015] [Indexed: 12/23/2022] Open
Abstract
The transcription factor Krüppel-like factor (KLF)8 plays an important role in the formation of several human tumors, including colorectal cancer. We recently identified four-and-a-half LIM protein 2 (FHL2) as a critical inducer of the epithelial-to-mesenchymal transition (EMT) and invasion. However, the molecular mechanism by which KLF8 affects FHL2-mediated tumor proliferation, EMT and metastasis remains unknown. Here, we showed that KLF8 overexpression promoted EMT and metastatic phenotypes. KLF8 expression was stimulated by transforming growth factor (TGF)-β1. Moreover, KLF8 acted as a potential EMT inducer by stimulating vimentin expression and inducing a loss of E-cadherin in stable KLF8-transfected cells. KLF8 overexpression induced a strong increase in FHL2 expression, and a positive correlation between the expression patterns of KLF8 and FHL2 was observed in CRC cells. Promoter reporter and chromatin immunoprecipitation (ChIP) assays demonstrated that KLF8 directly bound to and activated the human FHL2 gene promoter. However, siRNA-mediated repression of FHL2 in KLF8-overexpressing cells reversed the EMT and the proliferative and metastatic phenotypes. In vivo, KLF8 promoted FHL2-mediated proliferation and metastasis via orthotopic implantation. Taken together, this work identified KLF8-induced FHL2 activation as a novel and critical signaling mechanism underlying human breast/colorectal cancer invasion and metastasis.
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Affiliation(s)
- Qingqing Yan
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wenjing Zhang
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yao Wu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Meiyan Wu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Mengnan Zhang
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xinpeng Shi
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jinjun Zhao
- Department of Rheumatism, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qingzhen Nan
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ye Chen
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Long Wang
- Division of Vascular Interventional Radiology, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Tianming Cheng
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jiachu Li
- Department of Oncology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yang Bai
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Side Liu
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jide Wang
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
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16
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Abstract
The Four-and-a-half LIM (FHL)-only protein is a subfamily of protein members under the LIM-only protein family. These proteins are identified by their characteristic four and a half cysteinerich LIM homeodomain. Five members have been categorized into the FHL subfamily, which are FHL1, FHL2, FHL3, FHL4 and activator of CREM in testis (ACT) in human. FHL2 is amongst the most examined members within the family. Fhl2, the gene that code for the protein, is transcriptionally regulated by diverse types of transcription factors, for example, p53, serum response factor (SRF), and specificity protein 1 (Sp1). The expression of FHL2 is found in different tissues and organs and has been reported as a critical participant influencing the wide types of cancer such as breast cancer, gastrointestinal (GI) cancers, liver cancer and prostate cancer. The expression profile of FHL2 appeared to have a significant functional role in the carcinogenesis of these cancers which are mediated by different types of transcription factor including both tumor suppressors and inducers. In this review, we will first describe the molecular network governing FHL2 expression, which focus on the transcription factors conveying FHL2-initiated responses. In the second part, FHL2-linked cancers and the underlying molecular machinery will be discussed. Factors other than transcriptional regulation which may involve the cancer progression such as mutations of fhl2 and posttranslational modifications of the protein will also be mentioned.
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Affiliation(s)
- Cyanne Ye Cao
- School of Biomedical Sciences, the Chinese University of Hong Kong, Hong Kong, China
| | - Simon Wing-Fai Mok
- School of Biomedical Sciences, the Chinese University of Hong Kong, Hong Kong, China.
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17
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SHI XINPENG, LUO XIAOYONG, YAN QINGQING, ZHANG WENJING, WU YAO, ZHANG MENGNAN, ZHAO JINJUN, PENG YING, CHEN YE, ZHANG YALI, CHEN CUNLONG, CHENG TIANMING, CHEN CHUDI, LIU SIDE, BAI YANG, WANG JIDE. Suppression of KLF8 induces cell differentiation and sensitizes colorectal cancer to 5-fluorouracil. Oncol Rep 2015; 34:1221-30. [DOI: 10.3892/or.2015.4094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 05/20/2015] [Indexed: 11/05/2022] Open
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18
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HIF-1α Promotes Epithelial-Mesenchymal Transition and Metastasis through Direct Regulation of ZEB1 in Colorectal Cancer. PLoS One 2015; 10:e0129603. [PMID: 26057751 PMCID: PMC4461314 DOI: 10.1371/journal.pone.0129603] [Citation(s) in RCA: 195] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 05/11/2015] [Indexed: 01/08/2023] Open
Abstract
It is well recognized that hypoxia-inducible factor 1 alpha (HIF-1α) is involved in cancer metastasis, chemotherapy and poor prognosis. We previously found that deferoxamine, a hypoxia-mimetic agent, induces epithelial-mesenchymal transition (EMT) in colorectal cancer. Therefore, here we explored a new molecular mechanism for HIF-1α contributing to EMT and cancer metastasis through binding to ZEB1. In this study, we showed that overexpression of HIF-1α with adenovirus infection promoted EMT, cell invasion and migration in vitro and in vivo. On a molecular level, HIF-1α directly binding to the proximal promoter of ZEB1 via hypoxia response element (HRE) sites thus increasing the transactivity and expression of ZEB1. In addition, inhibition of ZEB1 was able to abrogate the HIF-1α-induced EMT and cell invasion. HIF-1α expression was highly correlated with the expression of ZEB1 in normal colorectal epithelium, primary and metastatic CRC tissues. Interestingly, both HIF-1α and ZEB1 were positively associated with Vimentin, an important mesenchymal marker of EMT, whereas negatively associated with E-cadherin expression. These findings suggest that HIF-1α enhances EMT and cancer metastasis by binding to ZEB1 promoter in CRC. HIF-1α and ZEB1 are both widely considered as tumor-initiating factors, but our results demonstrate that ZEB1 is a direct downstream of HIF-1α, suggesting a novel molecular mechanism for HIF-1α-inducing EMT and cancer metastasis.
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19
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Li M, Ling B, Xiao T, Tan J, An N, Han N, Guo S, Cheng S, Zhang K. Sp1 transcriptionally regulates BRK1 expression in non-small cell lung cancer cells. Gene 2014; 542:134-40. [PMID: 24680773 DOI: 10.1016/j.gene.2014.03.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 01/27/2014] [Accepted: 03/21/2014] [Indexed: 11/25/2022]
Abstract
Following a previous study reporting that BRK1 is upregulated in non-small cell lung cancer (NSCLC), the present study sought to clarify the role of specificity protein 1 (Sp1) in the transcriptional regulation of the BRK1 gene. Therefore, a construct, named F8, consisting of the -1341 to -1 nt sequence upstream of the start codon of the BRK1 gene inserted into pGL4.26 was made. A series of truncated fragments was then constructed based on F8. Segment S831, which contained the -84 to -1 nt region, displayed the highest transcriptional activity in the A549, H1299 and H520 NSCLC cell lines. Bioinformatic analysis showed a potential Sp1-binding element at -73 to -64 nt, and a mutation in this region suppressed the transcriptional activity of S831. Then the RNAi assays of Sp1 and its coworkers Sp3 and Sp4 were performed, and suppression of Sp1 by siRNA inhibited the mRNA expression of BRK1. Both an electrophoretic mobility shift assay (EMSA) and a chromatin immunoprecipitation (ChIP) assay demonstrated that Sp1 bound to the promoter area of the BRK1 gene. Our data identified a functional and positive Sp1 regulatory element from -73 to -64 nt in the BRK1 promoter, which may likely explain the overexpression of BRK1 in NSCLC.
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Affiliation(s)
- Meng Li
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100021, China
| | - Bing Ling
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100021, China
| | - Ting Xiao
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100021, China
| | - Jinjing Tan
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100021, China
| | - Ning An
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100021, China
| | - Naijun Han
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100021, China
| | - Suping Guo
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100021, China
| | - Shujun Cheng
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100021, China
| | - Kaitai Zhang
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100021, China.
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20
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Alnajar A, Nordhoff C, Schied T, Chiquet-Ehrismann R, Loser K, Vogl T, Ludwig S, Wixler V. The LIM-only protein FHL2 attenuates lung inflammation during bleomycin-induced fibrosis. PLoS One 2013; 8:e81356. [PMID: 24260575 PMCID: PMC3832604 DOI: 10.1371/journal.pone.0081356] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Accepted: 10/11/2013] [Indexed: 11/18/2022] Open
Abstract
Fibrogenesis is usually initiated when regenerative processes have failed and/or chronic inflammation occurs. It is characterised by the activation of tissue fibroblasts and dysregulated synthesis of extracellular matrix proteins. FHL2 (four-and-a-half LIM domain protein 2) is a scaffolding protein that interacts with numerous cellular proteins, regulating signalling cascades and gene transcription. It is involved in tissue remodelling and tumour progression. Recent data suggest that FHL2 might support fibrogenesis by maintaining the transcriptional expression of alpha smooth muscle actin and the excessive synthesis and assembly of matrix proteins in activated fibroblasts. Here, we present evidence that FHL2 does not promote bleomycin-induced lung fibrosis, but rather suppresses this process by attenuating lung inflammation. Loss of FHL2 results in increased expression of the pro-inflammatory matrix protein tenascin C and downregulation of the macrophage activating C-type lectin receptor DC-SIGN. Consequently, FHL2 knockout mice developed a severe and long-lasting lung pathology following bleomycin administration due to enhanced expression of tenascin C and impaired activation of inflammation-resolving macrophages.
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Affiliation(s)
- Abdulaleem Alnajar
- Institute of Molecular Virology, Centre for Molecular Biology of Inflammation (ZMBE), Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Carolin Nordhoff
- Institute of Molecular Virology, Centre for Molecular Biology of Inflammation (ZMBE), Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Tanja Schied
- Institute of Molecular Virology, Centre for Molecular Biology of Inflammation (ZMBE), Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Ruth Chiquet-Ehrismann
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland
- Faculty of Science, University of Basel, Basel, Switzerland
| | - Karin Loser
- Department of Dermatology, Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Thomas Vogl
- Institute of Immunology, Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Stephan Ludwig
- Institute of Molecular Virology, Centre for Molecular Biology of Inflammation (ZMBE), Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Viktor Wixler
- Institute of Molecular Virology, Centre for Molecular Biology of Inflammation (ZMBE), Westfaelische Wilhelms-University Muenster, Muenster, Germany
- * E-mail:
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21
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ZHAO YINGYING, ZHANG WENJING, GUO ZHENG, MA FENG, WU YAO, BAI YANG, GONG WEI, CHEN YE, CHENG TIANMING, ZHI FACHAO, ZHANG YALI, WANG JIDE, JIANG BO. Inhibition of the transcription factor Sp1 suppresses colon cancer stem cell growth and induces apoptosis in vitro and in nude mouse xenografts. Oncol Rep 2013; 30:1782-92. [DOI: 10.3892/or.2013.2627] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Accepted: 05/02/2013] [Indexed: 11/06/2022] Open
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22
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EpCAM regulates cell cycle progression via control of cyclin D1 expression. Oncogene 2012; 32:641-50. [PMID: 22391566 DOI: 10.1038/onc.2012.75] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The epithelial cell adhesion molecule (EpCAM) is an integral transmembrane protein that is frequently overexpressed in embryonic stem cells, tissue progenitors, carcinomas and cancer-initiating cells. In cancer cells, expression of EpCAM is associated with enhanced proliferation and upregulation of target genes including c-myc. However, the exact molecular mechanisms underlying the observed EpCAM-dependent cell proliferation remained unexplored. Here, we show that EpCAM directly affects cell cycle progression via its capacity to regulate the expression of cyclin D1 at the transcriptional level and depending on the direct interaction partner FHL2 (four-and-a-half LIM domains protein 2). As a result, downstream events such as phosphorylation of the retinoblastoma protein (Rb) and expression of cyclins E and A are similarly affected. In vivo, EpCAM expression strength and pattern are both positively correlated with the proliferation marker Ki67, high expression and nuclear localisation of cyclin D1, and Rb phosphorylation. Thus, EpCAM enhances cell cycle progression via the classical cyclin-regulated pathway.
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23
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Ng CF, Zhou WJW, Ng PKS, Li MS, Ng YK, Lai PBS, Tsui SKW. Characterization of human FHL2 transcript variants and gene expression regulation in hepatocellular carcinoma. Gene 2011; 481:41-7. [DOI: 10.1016/j.gene.2011.04.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Accepted: 04/15/2011] [Indexed: 11/25/2022]
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