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Li J, Zhang X, Liu X, Ma X, Wang Y, Liu Y. JARID2 activation by NFYA promotes stemness of triple-negative breast cancer cells through the PI3K/AKT pathway. Expert Rev Anticancer Ther 2024:1-12. [PMID: 39254227 DOI: 10.1080/14737140.2024.2394167] [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: 07/13/2023] [Accepted: 06/19/2024] [Indexed: 09/11/2024]
Abstract
BACKGROUND This study aimed to investigate the role of Jumonji AT Rich Interacting Domain 2 (JARID2) in regulating triple-negative breast cancer (TNBC) stemness and its mechanism. RESEARCH DESIGN AND METHODS Bioinformatics analysis examined JARID2 expression, prognosis, and transcription factors. Quantitative polymerase chain reaction, western blot, and immunohistochemistry detected expression. Dual luciferase reporter gene and chromatin immunoprecipitation assays verified binding. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and colony formation assay detected viability and proliferation. Sphere formation assay detected the sphere formation efficiency. Flow cytometry detected CD44+/CD24- -marked stem cells. A xenograft tumor model verified the effect of JARID2 in vivo. RESULTS JARID2 and nuclear transcription factor Y subunit α (NFYA) were upregulated in TNBC tissues and positively correlated. Knockdown of JARID2 or NFYA inhibited cell stemness by inhibiting the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (PKB/AKT) signaling pathway. Enforced JARID2 expression rescued the suppressive effect of NFYA knockdown on the PI3K/AKT signaling pathway and cell stemness. Knockdown of JARID2 inhibited tumor growth and cell stemness in mice but was alleviated by concurrent overexpression of NFYA. CONCLUSIONS NFYA promotes TNBC cell stemness by upregulating JARID2 expression and regulating the PI3K/AKT signaling pathway, suggesting JARID2 as a potential target for innovating drugs that target TNBC stem cells.
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Affiliation(s)
- Jianjie Li
- Breast Cancer Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiangmei Zhang
- Breast Cancer Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xueliang Liu
- Breast Cancer Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiangmin Ma
- Breast Cancer Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yanfang Wang
- Breast Cancer Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yunjiang Liu
- Breast Cancer Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
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2
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Wang J, Yang B, Wang Y, Liu S, Ma C, Piao J, Ma S, Yu D, Wu W. CBX2 enhances the progression and TMZ chemoresistance of glioma via EZH2-mediated epigenetic silencing of PTEN expression. Front Pharmacol 2024; 15:1430891. [PMID: 39114365 PMCID: PMC11303140 DOI: 10.3389/fphar.2024.1430891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Accepted: 07/04/2024] [Indexed: 08/10/2024] Open
Abstract
Chromobox (CBX) 2, a member of the CBX protein family and a crucial component of the polycomb repressive complex (PRC), exerts significant influence on the epigenetic regulation of tumorigenesis, including glioma. However, the precise role of CBX2 in glioma has remained elusive. In our study, we observed a substantial upregulation of CBX2 expression in glioma, which displayed a strong correlation with pathological grade, chemoresistance, and unfavorable prognosis. Through a series of in vivo and in vitro experiments, we established that heightened CBX2 expression facilitated glioma cell proliferation and bolstered resistance to chemotherapy. Conversely, CBX2 knockdown led to a significant inhibition of glioma cell growth and a reduction in chemoresistance. Notably, our investigation uncovered the underlying mechanism by which CBX2 operates, primarily by inhibiting PTEN transcription and activating the AKT/mTOR signalling pathway. Conversely, silencing CBX2 curtailed cell proliferation and attenuated chemoresistance by impeding the activation of the PTEN/AKT/mTOR signalling pathway. Delving deeper into the molecular intricacies, we discovered that CBX2 can recruit EZH2 and modulate the trimethylation of histone H3 lysine 27 (H3K27me3) levels on the PTEN promoter, effectively suppressing PTEN transcription. Our research unveils a comprehensive understanding of how CBX2 impacts the tumorigenesis, progression, chemoresistance, and prognosis of glioma. Furthermore, it presents CBX2 as a promising therapeutic target for drug development and clinical management of glioma.
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Affiliation(s)
- Jian Wang
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, China
| | - Bo Yang
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun, China
| | - Yingzhao Wang
- Department of Neurology, Qianwei Hospital of Jilin Province, Changchun, China
| | - Shuhan Liu
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, China
| | - Changkai Ma
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, China
| | - Jianmin Piao
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, China
| | - Shiqiang Ma
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, China
| | - Dehai Yu
- Core Facility, The First Hospital of Jilin University, Changchun, China
| | - Wei Wu
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, China
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Cheng Y, Song Z, Cheng J, Tang Z. JARID2, a novel regulatory factor, promotes cell proliferation, migration, and invasion in oral squamous cell carcinoma. BMC Cancer 2024; 24:793. [PMID: 38961353 PMCID: PMC11220990 DOI: 10.1186/s12885-024-12457-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 05/31/2024] [Indexed: 07/05/2024] Open
Abstract
BACKGROUND Accurate regulation of gene expression is crucial for normal development and function of cells. The prognostic significance and potential carcinogenic mechanisms of the related gene JARID2 in OSCC are not yet clear, but existing research has indicated a significant association between the two. METHODS AND MATERIALS The relationship between the expression of the JARID2 gene in tumor samples of OSCC patients and clinical pathological factors was analyzed using immunohistochemistry experiments and RT-qPCR analysis. Based on the clinical pathological data of patients, bioinformatics analysis was conducted using public databases to determine the function of JARID2 in OSCC. Knockdown OSCC cell lines were constructed, and the impact of JARID2 on the biological behavior of OSCC cell lines was assessed through CCK-8, wound healing assay, and transwell analysis. RESULTS Immunohistochemistry experiments confirmed the correlation between JARID2 and the prognosis of OSCC patients, while RT-qPCR experiments demonstrated its expression levels in tissue and cells. CKK-8 experiments, wound healing assays, and Transwell experiments indicated that knocking down JARID2 had a negative impact on the proliferation, invasion, and migration of OSCC cells. Bioinformatics analysis results showed that the expression of JARID2 in OSCC is closely associated with patient gene co-expression, gene function enrichment, immune infiltration, and drug sensitivity. CONCLUSION Our study indicates that JARID2 is a novel prognostic biomarker and potential therapeutic target for OSCC.
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Affiliation(s)
- Yuxi Cheng
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, 410008, China
- Hunan Key Laboratory of Oral Health Research & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Changsha, Hunan, 410008, China
| | - Zhengzheng Song
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, 410008, China
- Hunan Key Laboratory of Oral Health Research & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Changsha, Hunan, 410008, China
| | - Jingyi Cheng
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, 410008, China.
- Hunan Key Laboratory of Oral Health Research & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Changsha, Hunan, 410008, China.
| | - Zhangui Tang
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, 410008, China.
- Hunan Key Laboratory of Oral Health Research & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Changsha, Hunan, 410008, China.
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Yang H, Zhang C, Chao X, Zhao J, Liu M, Chen J, Liu S, Wang T, Muhammad A, Schinckel AP, Zhou B. A Functional Single Nucleotide Polymorphism in the 3' Untranslated Region of the Porcine JARID2 Gene Is Associated with Aggressive Behavior of Weaned Pigs after Mixing. Int J Mol Sci 2023; 25:27. [PMID: 38203196 PMCID: PMC10779117 DOI: 10.3390/ijms25010027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/15/2023] [Accepted: 12/16/2023] [Indexed: 01/12/2024] Open
Abstract
In pig production, pigs often show more aggressive behavior after mixing, which adversely affects animal welfare and growth performance. The Jumonji and structural domain-rich AT interaction domain 2 (JARID2) gene plays an important role in neurodevelopment in mice and various psychiatric disorders in humans. The JARID2 gene may impact the aggressive behavior of pigs. By observing the behavior of 500 weaned pigs during the first 72 h after mixing, the ear tissue samples of the 12 most aggressive and 12 least aggressive pigs were selected for DNA resequencing based on the intensity of their aggressive behavior. Large group correlation analysis indicated that the rs3262221458 site located in the 3'-UTR region of the porcine JARID2 gene has a strong relationship with the aggressive behavior of weaned pigs. Pigs with the mutant TT genotype of rs3262221458 have more aggressive behavior than those pigs with the GG and GT genotypes. The dual luciferase assay indicated that the luciferase activity of the plasmids containing the G allele of rs326221458 was significantly less than that of plasmids containing the T allele of rs326221458 and control groups. The binding ability of miR-9828-3p to sequences containing the T allele was less than that of sequences containing the G allele. The overexpression of miR-9828-3p in porcine neuroglial cells (PNGCs) and PK15 cells significantly decreased the mRNA and protein levels of the JARID2 gene. In addition, miR-9828-3p inhibited the proliferation of PNGCs. After inhibiting miR-9828-3p, the mRNA and protein expression levels of JARID2 increased, and the proliferation of PNGCs showed an opposite trend to the cells that forced the expression of miR-9828-3p. In addition, interference with the JARID2 gene by siRNA can effectively inhibit the proliferation of PNGCs. In summary, we found that the rs326221458 locus regulates the expression of the JARID2 gene by affecting the binding of miR-9828-3p and the JARID2 gene, thereby affecting the aggressive behavior of weaned pigs after mixing.
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Affiliation(s)
- Huan Yang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (H.Y.); (C.Z.); (X.C.); (J.Z.); (M.L.); (J.C.); (S.L.); (T.W.); (A.M.)
| | - Chunlei Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (H.Y.); (C.Z.); (X.C.); (J.Z.); (M.L.); (J.C.); (S.L.); (T.W.); (A.M.)
| | - Xiaohuan Chao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (H.Y.); (C.Z.); (X.C.); (J.Z.); (M.L.); (J.C.); (S.L.); (T.W.); (A.M.)
| | - Jing Zhao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (H.Y.); (C.Z.); (X.C.); (J.Z.); (M.L.); (J.C.); (S.L.); (T.W.); (A.M.)
| | - Mingzheng Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (H.Y.); (C.Z.); (X.C.); (J.Z.); (M.L.); (J.C.); (S.L.); (T.W.); (A.M.)
| | - Jiahao Chen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (H.Y.); (C.Z.); (X.C.); (J.Z.); (M.L.); (J.C.); (S.L.); (T.W.); (A.M.)
| | - Shuhan Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (H.Y.); (C.Z.); (X.C.); (J.Z.); (M.L.); (J.C.); (S.L.); (T.W.); (A.M.)
| | - Tianshuo Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (H.Y.); (C.Z.); (X.C.); (J.Z.); (M.L.); (J.C.); (S.L.); (T.W.); (A.M.)
| | - Asim Muhammad
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (H.Y.); (C.Z.); (X.C.); (J.Z.); (M.L.); (J.C.); (S.L.); (T.W.); (A.M.)
| | - Allan P. Schinckel
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA;
| | - Bo Zhou
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (H.Y.); (C.Z.); (X.C.); (J.Z.); (M.L.); (J.C.); (S.L.); (T.W.); (A.M.)
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Yoo W, Kim S, Noh K. SAMD13 serves as a useful prognostic biomarker for hepatocellular carcinoma. Eur J Med Res 2023; 28:514. [PMID: 37968735 PMCID: PMC10648382 DOI: 10.1186/s40001-023-01347-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 09/06/2023] [Indexed: 11/17/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common form of liver cancer and the 5-year relative overall survival (OS) rate is less than 20%. Since there are no specific symptoms, most patients with HCC are diagnosed in an advanced stage with poor prognosis. Therefore, identifying novel prognostic biomarkers to improve the survival of patients with HCC is urgently needed. In the present study, we attempted to identify SAMD13 (Sterile Alpha Motif Domain-Containing Protein 13) as a novel biomarker associated with the prognosis of HCC using various bioinformatics tools. SAMD13 was found to be highly expressed pan-cancer; however, the SAMD13 expression was significantly correlated with the worst prognosis in HCC. Clinicopathological analysis revealed that SAMD13 upregulation was significantly associated with advanced HCC stage and high-grade tumor type. Simultaneously, high SAMD13 expression resulted in association with various immune markers in the immune cell subsets by TIMER databases and efficacy of immunotherapy. Methylation analysis showed SAMD13 was remarkably associated with prognosis. Furthermore, a six-hub gene signature associated with poor prognosis was correlated with the cell cycle, transcription, and epigenetic regulation and this analysis may support the connection between SAMD13 expression and drug-resistance. Our study illustrated the characteristics of SAMD13 role in patients with HCC using various bioinformatics tools and highlights its potential role as a therapeutic target and promising biomarker for prognosis in HCC.
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Affiliation(s)
- Wonbeak Yoo
- Personalized Genomic Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Seokho Kim
- Department of Health Sciences, The Graduate School of Dong-A University, Busan, 49315, Republic of Korea.
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, 37, Nakdong-daero 550 beon-gil, Saha-gu, Busan, 49315, Republic of Korea.
| | - KyungHee Noh
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea.
- Department of Nanobiotechnology, University of Science and Technology (UST), Daejeon, 34141, Republic of Korea.
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Shukla A, Jain A. Hepatocellular Carcinoma with Hepatic Vein and Inferior Vena Cava Invasion. J Clin Exp Hepatol 2023; 13:813-819. [PMID: 37693266 PMCID: PMC10482991 DOI: 10.1016/j.jceh.2023.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 03/15/2023] [Indexed: 09/12/2023] Open
Abstract
Hepatocellular carcinoma (HCC) invades intrahepatic vessels causing tumor thrombosis. Infrequently, there is involvement of the hepatic vein (HV) and inferior vena cava (IVC). In this review, we summarize the epidemiology, classification, clinical features, and management of HCC with HV and IVC invasion. While the involvement of HV and IVC usually portends an overall poor survival, selected patients may be candidates for aggressive treatment and thus improving outcomes.
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Affiliation(s)
- Akash Shukla
- Department of Gastroenterology, G.S.Medical College and KEM Hospital, Mumbai, India
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7
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Gu Y, Ding Z, Zhou Q, Li J, Qian W. JARID2 regulates epithelial mesenchymal transition through the PTEN/AKT signalling pathways in ovarian endometriosis. Reprod Biol 2023; 23:100729. [PMID: 36640627 DOI: 10.1016/j.repbio.2023.100729] [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: 08/15/2022] [Revised: 12/07/2022] [Accepted: 01/02/2023] [Indexed: 01/15/2023]
Abstract
Recently, it has been proposed that epithelial-mesenchymal transition (EMT) plays a key role in the development of endometriosis (EMs). Although EMs is a benign disease, it has the characteristics of malignant tumors, such as invasion and migration. JARID2 (Jumonji, AT rich interaction domain) can induce EMT in cancer cells to increase their invasion and migration abilities. However, whether JARID2 has the same function in EMs is not yet known. In this study, A retrospective immunohistochemistry(IHC) was used to measure the expression of JARID2, E-cadherin, PTEN, and p-AKT in ovarian endometriosis (OE) tissues. JARID2, EMT and PTEN/AKT signaling pathway related indicators were assessed by RT-PCR and western blotting in vitro. Furthermore, functional assays were applied to evaluate the involvement of JARID2 in the invasion and migration of Ishikawa cells. Here,we conclude that JARID2 could be involved in the PTEN/AKT signalling pathway and contribute to the development of ovarian endometriosis. The expression of JARID2 was negatively correlated with PTEN, but positively correlated with p-AKT in the ectopic endometrial tissues of OE cases. JARID2 overexpression increased the expression of N-cadherin, vimentin and AKT, but inhibited the expression of E-cadherin and PTEN. Accordingly, the opposite results were obtainedwhen JARID2 was downregulated. Furthermore, JARID2 promoted the invasion and migration ability of Ishikawa cells.
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Affiliation(s)
- Yiran Gu
- Department of Gyanecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shang hai 201620, PR China
| | - Zhiyun Ding
- Department of Gynaecology, Kunshan Hospital of Traditional Chinese Medicine Affiliated to Yangzhou University, Kunshan, Jiangsu 215300, PR China
| | - Qin Zhou
- Department of Gynaecology, Kunshan Hospital of Traditional Chinese Medicine Affiliated to Yangzhou University, Kunshan, Jiangsu 215300, PR China
| | - Juan Li
- Department of Gynaecology, Kunshan Hospital of Traditional Chinese Medicine Affiliated to Yangzhou University, Kunshan, Jiangsu 215300, PR China
| | - Wenyan Qian
- Department of Gynaecology, Kunshan Hospital of Traditional Chinese Medicine Affiliated to Yangzhou University, Kunshan, Jiangsu 215300, PR China.
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8
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Guo Y, Yu Y, Wang GG. Polycomb Repressive Complex 2 in Oncology. Cancer Treat Res 2023; 190:273-320. [PMID: 38113005 DOI: 10.1007/978-3-031-45654-1_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Dynamic regulation of the chromatin state by Polycomb Repressive Complex 2 (PRC2) provides an important mean for epigenetic gene control that can profoundly influence normal development and cell lineage specification. PRC2 and PRC2-induced methylation of histone H3 lysine 27 (H3K27) are critically involved in a wide range of DNA-templated processes, which at least include transcriptional repression and gene imprinting, organization of three-dimensional chromatin structure, DNA replication and DNA damage response and repair. PRC2-based genome regulation often goes wrong in diseases, notably cancer. This chapter discusses about different modes-of-action through which PRC2 and EZH2, a catalytic subunit of PRC2, mediate (epi)genomic and transcriptomic regulation. We will also discuss about how alteration or mutation of the PRC2 core or axillary component promotes oncogenesis, how post-translational modification regulates functionality of EZH2 and PRC2, and how PRC2 and other epigenetic pathways crosstalk. Lastly, we will briefly touch on advances in targeting EZH2 and PRC2 dependence as cancer therapeutics.
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Affiliation(s)
- Yiran Guo
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, 27710, USA.
- Duke Cancer Institute, Duke University School of Medicine, Durham, NC, 27710, USA.
| | - Yao Yu
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, 27710, USA
- Duke Cancer Institute, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Gang Greg Wang
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, 27710, USA.
- Duke Cancer Institute, Duke University School of Medicine, Durham, NC, 27710, USA.
- Department of Pathology, Duke University School of Medicine, Durham, NC, 27710, USA.
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9
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Wen Z, He K, Zhan M, Li Y, Liu F, He X, Wei Y, Zhao W, Zhang Y, Xue Y, Xia Y, Wang F, Xia Z, Xin Y, Wu Y, Duan X, Xiao J, Shen F, Feng Y, Xiang G, Lu L. Distinct binding pattern of EZH2 and JARID2 on RNAs and DNAs in hepatocellular carcinoma development. Front Oncol 2022; 12:904633. [PMID: 36578923 PMCID: PMC9792092 DOI: 10.3389/fonc.2022.904633] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 09/14/2022] [Indexed: 12/14/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most malignant cancers worldwide, with high mortality. However, the molecular regulatory mechanisms of liver cancer, especially transcriptional and post-transcriptional mechanisms, should be further studied. Here we used chromatin and cross-linking immunoprecipitation with high throughput sequencing methods (ChIP-seq and CLIP-seq) to capture the global binding profiles on RNAs and DNAs of Enhancer of zeste homolog 2 (EZH2) and its partner Jumonji And AT-Rich Interaction Domain Containing 2 (JARID2) in liver carcinoma cell lines (HepG2) and normal liver cell line (THLE-2), respectively. We also integrated HCC transcriptome data from the TCGA to analyze the expression pattern of bound genes. We found that EZH2 and JARID2 both showed distinct binding profiles between HepG2 and THLE-2 cells. By binding to the primary RNAs, bound transcripts of EZH2 and JARID2 in HepG2 showed significantly increased transcriptional levels in HCC patients. By performing gene set enrichment analysis (GSEA), the bound transcripts were also highly related to HCC development. We also found EZH2 and JARID2 could specifically bind to several long noncoding RNAs (lncRNAs), including H19. By exploring the DNA binding profile, we detected a dramatically repressed DNA binding ability of EZH2 in HepG2 cells. We also found that the EZH2-bound genes showed slightly increased transcriptional levels in HepG2 cells. Integrating analysis of the RNA and DNA binding profiles suggests EZH2 and JARID2 shift their binding ability from DNA to RNA in HepG2 cells to promote cancer development in HCC. Our study provided a comprehensive and distinct binding profile on RNAs and DNAs of EZH2 and JARID2 in liver cancer cell lines, suggesting their potential novel functional manners to promote HCC development.
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Affiliation(s)
- Zhili Wen
- Department of Gastroenterology, Second Affiliated Hospital, Nanchang University, Nanchang, China
- Infectious Hospital, Nanchang University, Nanchang, China
| | - Ke He
- Department of General Surgery, Guangdong Second Provincial General Hospital, Guangzhou, China
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory of Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Meixiao Zhan
- Zhuhai Interventional Medical Center, Zhuhai Precision Medical Center, Zhuhai People's Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, China
| | - Yong Li
- Zhuhai Interventional Medical Center, Zhuhai Precision Medical Center, Zhuhai People's Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, China
| | - Fei Liu
- Department of General Surgery, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Xu He
- Zhuhai Interventional Medical Center, Zhuhai Precision Medical Center, Zhuhai People's Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, China
| | - Yanli Wei
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory of Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Wei Zhao
- Zhuhai Interventional Medical Center, Zhuhai Precision Medical Center, Zhuhai People's Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, China
| | - Yu Zhang
- Center for Genome Analysis, ABLife Inc., Wuhan, China
| | - Yaqiang Xue
- Center for Genome Analysis, ABLife Inc., Wuhan, China
- Laboratory of Human Health and Genome Regulation, ABLife Inc., Wuhan, China
| | - Yong Xia
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Navy Medical University, Shanghai, China
| | - Fenfen Wang
- Department of Gastroenterology, Second Affiliated Hospital, Nanchang University, Nanchang, China
| | - Zhenglin Xia
- Department of General Surgery, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Yongjie Xin
- Zhuhai Interventional Medical Center, Zhuhai Precision Medical Center, Zhuhai People's Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, China
| | - Yeye Wu
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Navy Medical University, Shanghai, China
| | - Xiaopeng Duan
- Department of General Surgery, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Jing Xiao
- Zhuhai Interventional Medical Center, Zhuhai Precision Medical Center, Zhuhai People's Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, China
| | - Feng Shen
- Department of Hepatic Surgery, The Eastern Hepatobiliary Surgery Hospital, Navy Medical University, Shanghai, China
| | - Yuliang Feng
- Zhuhai Interventional Medical Center, Zhuhai Precision Medical Center, Zhuhai People's Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, China
| | - Guoan Xiang
- Department of General Surgery, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Ligong Lu
- Zhuhai Interventional Medical Center, Zhuhai Precision Medical Center, Zhuhai People's Hospital, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, China
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Zhou M, Yao Z, Zhao M, Fang Q, Ji X, Chen H, Zhao Y. Molecular Cloning and Expression Responses of Jarid2b to High-Temperature Treatment in Nile Tilapia ( Oreochromis niloticus). Genes (Basel) 2022; 13:1719. [PMID: 36292604 PMCID: PMC9602145 DOI: 10.3390/genes13101719] [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: 08/20/2022] [Revised: 09/12/2022] [Accepted: 09/20/2022] [Indexed: 10/27/2023] Open
Abstract
Nile tilapia is a GSD + TE (Genetic Sex Determination + Temperature Effect) fish, and high-temperature treatment during critical thermosensitive periods (TSP) can induce the sex reversal of Nile tilapia genetic females, and brain transcriptomes have revealed the upregulation of Jarid2 (Jumonji and AT-rich domain containing 2) expression after 36 °C high-temperature treatment for 12 days during TSP. It was shown that JARID2 forms a complex with polycomb repressive complex 2 (PRC2) that catalyzed H3K27me3, which was strongly associated with transcriptional repression. In this study, Jarid2b was cloned and characterized in Nile tilapia, which was highly conserved among the analyzed fish species. The expression of Jarid2b was upregulated in the gonad of 21 dpf XX genetic females after 12-day high-temperature treatment and reached a similar level to that of males. Similar responses to high-temperature treatment also appeared in the brain, heart, liver, muscle, eye, and skin tissues. Interestingly, Jarid2b expression was only in response to high-temperature treatment, and not to 17α-methyltestosterone (MT) or letrozole treatments; although, these treatments can also induce the sex reversal of genetic Nile tilapia females. Further studies revealed that Jarid2b responded rapidly at the 8th hour after high-temperature treatment. Considering that JARID2 can recruit PRC2 and establish H3K27me3, we speculated that it might be an upstream gene participating in the regulation of Nile tilapia GSD + TE through regulating the H3K27 methylation level at the locus of many sex differentiation-related genes.
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Affiliation(s)
| | | | | | | | | | | | - Yan Zhao
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian 271000, China
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11
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JMJD family proteins in cancer and inflammation. Signal Transduct Target Ther 2022; 7:304. [PMID: 36050314 PMCID: PMC9434538 DOI: 10.1038/s41392-022-01145-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/22/2022] [Accepted: 08/01/2022] [Indexed: 11/30/2022] Open
Abstract
The occurrence of cancer entails a series of genetic mutations that favor uncontrollable tumor growth. It is believed that various factors collectively contribute to cancer, and there is no one single explanation for tumorigenesis. Epigenetic changes such as the dysregulation of enzymes modifying DNA or histones are actively involved in oncogenesis and inflammatory response. The methylation of lysine residues on histone proteins represents a class of post-translational modifications. The human Jumonji C domain-containing (JMJD) protein family consists of more than 30 members. The JMJD proteins have long been identified with histone lysine demethylases (KDM) and histone arginine demethylases activities and thus could function as epigenetic modulators in physiological processes and diseases. Importantly, growing evidence has demonstrated the aberrant expression of JMJD proteins in cancer and inflammatory diseases, which might serve as an underlying mechanism for the initiation and progression of such diseases. Here, we discuss the role of key JMJD proteins in cancer and inflammation, including the intensively studied histone lysine demethylases, as well as the understudied group of JMJD members. In particular, we focused on epigenetic changes induced by each JMJD member and summarized recent research progress evaluating their therapeutic potential for the treatment of cancer and inflammatory diseases.
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12
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The Prognostic Value of AT-Rich Interaction Domain (ARID) Family Members in Patients with Hepatocellular Carcinoma. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:1150390. [PMID: 36034939 PMCID: PMC9410793 DOI: 10.1155/2022/1150390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 07/19/2022] [Indexed: 12/24/2022]
Abstract
Objective Hepatocellular carcinoma (HCC) is one of the most lethal malignancies with a poor prognosis. The AT-rich interaction domain (ARID) family plays an essential regulatory role in the pathogenesis and progression of cancers. This study aims to evaluate the prognostic value and clinical significance of human ARID family genes in HCC. Methods ONCOMINE and The Cancer Genome Atlas (TCGA) databases were employed to retrieve ARIDs expression profile and clinicopathological information of HCC. Kaplan–Meier plotter and MethSurv were applied to the survival analysis of patients with HCC. CBioPortal was used to analyze genetic mutations of ARIDs. Gene Expression Profiling Interactive Analysis (GEPIA) and Metascape were used to perform hub gene identification and functional enrichment. Results Expression levels of 11 ARIDs were upregulated in HCC, and 2 ARIDs were downregulated. Also, 4 ARIDs and 5 ARIDs were correlated with pathologic stages and histologic grades, respectively. Furthermore, higher expression of ARID1A, ARID1B, ARID2, ARID3A, ARID3B, ARID5B, KDM5A, KDM5B, KDM5C, and JARID2 was remarkably correlated with worse overall survival of patients with HCC, and the high ARID3C/KDM5D expression was related to longer overall survival. Multivariate Cox analysis indicated that ARID3A, KDM5C, and KDM5D were independent risk factors for HCC prognosis. Moreover, ARIDs mutations and 127 CpGs methylation in all ARIDs were observed to be significantly associated with the prognosis of HCC patients. Besides, our data showed that ARIDs could regulate tumor-related pathways and distinct immune cells in the HCC microenvironment. Conclusions ARIDs present the potential prognostic value for HCC. Our findings suggest that ARID3A, KDM5C, and KDM5D may be the prognostic biomarkers for patients with HCC.
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13
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Parreno V, Martinez AM, Cavalli G. Mechanisms of Polycomb group protein function in cancer. Cell Res 2022; 32:231-253. [PMID: 35046519 PMCID: PMC8888700 DOI: 10.1038/s41422-021-00606-6] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 12/10/2021] [Indexed: 02/01/2023] Open
Abstract
Cancer arises from a multitude of disorders resulting in loss of differentiation and a stem cell-like phenotype characterized by uncontrolled growth. Polycomb Group (PcG) proteins are members of multiprotein complexes that are highly conserved throughout evolution. Historically, they have been described as essential for maintaining epigenetic cellular memory by locking homeotic genes in a transcriptionally repressed state. What was initially thought to be a function restricted to a few target genes, subsequently turned out to be of much broader relevance, since the main role of PcG complexes is to ensure a dynamically choregraphed spatio-temporal regulation of their numerous target genes during development. Their ability to modify chromatin landscapes and refine the expression of master genes controlling major switches in cellular decisions under physiological conditions is often misregulated in tumors. Surprisingly, their functional implication in the initiation and progression of cancer may be either dependent on Polycomb complexes, or specific for a subunit that acts independently of other PcG members. In this review, we describe how misregulated Polycomb proteins play a pleiotropic role in cancer by altering a broad spectrum of biological processes such as the proliferation-differentiation balance, metabolism and the immune response, all of which are crucial in tumor progression. We also illustrate how interfering with PcG functions can provide a powerful strategy to counter tumor progression.
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Affiliation(s)
- Victoria Parreno
- Institute of Human Genetics, UMR 9002, CNRS-University of Montpellier, Montpellier, France
| | - Anne-Marie Martinez
- Institute of Human Genetics, UMR 9002, CNRS-University of Montpellier, Montpellier, France.
| | - Giacomo Cavalli
- Institute of Human Genetics, UMR 9002, CNRS-University of Montpellier, Montpellier, France.
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14
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Guo L, Ma H, Kong Y, Leng G, Liu G, Zhang Y. Long non-coding RNA TNK2 AS1/microRNA-125a-5p axis promotes tumor growth and modulated phosphatidylinositol 3 kinase/AKT pathway. J Gastroenterol Hepatol 2022; 37:124-133. [PMID: 34494305 DOI: 10.1111/jgh.15683] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/06/2021] [Accepted: 08/30/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIM Long non-coding RNA (lncRNA) TNK2 AS1 is a noncoding RNA with the capability of affecting microRNAs (miRNAs) levels and gene expression. The study was designed to investigate the mechanism of TNK2 AS1 in gastric cancer. METHODS The loss and gain of function of TNK2 AS1 were investigated by analyzing the malignant behavior of AGS cells including the abilities of migration, invasion, and epithelial-mesenchymal transition (EMT) process via wound healing and transwell assay, as well as western blot. The targeting relationship of LncRNA TNK2 AS1 was analyzed through searching bioinformatics database, luciferase reporter assay, and RNA immunoprecipitation (RIP) assay. Tumor-bearing experiment in nude mice was performed to further confirm the regulatory role of TNK2 AS1 in vivo. Immunofluorescence assay for Ki67 expression was carried out in tumor tissues of mice model. RESULTS The results showed that TNK2 AS1 overexpression promoted the malignant behaviors of AGS cells, which could be weakened by miR-125a-5p mimic addition. In addition, Jumonji, At-rich interaction domain (JARID2), and phosphatidylinositol 3 kinase (PI3K)/AKT pathway were regulated by TNK2-AS1/miR-125a-5p axis. In vivo, TNK2 AS1/miR-125a-5p axis promoted tumor growth and led to increases in green fluorescence intensity and vimentin expression and a decrease in E-cadherin level, which could be mediated by JARID2 and PI3K/AKT pathway. CONCLUSION Therefore, a conclusion was drawn that TNK2-AS1/miR-125a-5p promoted the progression of gastric cancer.
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Affiliation(s)
- Liuqing Guo
- Lanzhou University Second Hospital, Lanzhou, P.R. China
| | - Hanwei Ma
- Lanzhou University Second Hospital, Lanzhou, P.R. China
| | - Yin Kong
- Lanzhou University Second Hospital, Lanzhou, P.R. China
| | | | - Guiyuan Liu
- Lanzhou University Second Hospital, Lanzhou, P.R. China
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15
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Wang Q, Wu J, Wei H, Huang H, Huang Y, Fang H, Gong X, Sun J, Wu Y, Lei C, Yu J, Hu D. JARID2 promotes stemness and cisplatin resistance in non-small cell lung cancer via upregulation of Notch1. Int J Biochem Cell Biol 2021; 138:106040. [PMID: 34246759 DOI: 10.1016/j.biocel.2021.106040] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 02/06/2023]
Abstract
Increased stemness is causally linked to development of drug resistance in cancers. JARID2 is a member of the Jumonji family of proteins and regulates differentiation of embryonic stem cells. However, the role of JARID2 in lung cancer stemness and drug resistance is still unclear. In this study, we investigated the expression of JARID2 in parental and cisplatin (CDDP) resistant non-small cell lung cancer (NSCLC) cells. The function of JARID2 in modulating CDDP sensitivity of NSCLC cells was determined. It was found that JARID2 is upregulated in CDDP resistant NSCLC cells, which depends on SOX2 expression. JARID2 overexpression promotes CDDP resistance in NSCLC cells, whereas JARID2 depletion restores CDDP sensitivity in CDDP resistant NSCLC cells. Moreover, JARID2 overexpression enhances cancer stem cell-like properties in NSCLC cells, which is coupled with increased expression of cancer stem cell markers. Mechanistically, JARID2-induced stemness and CDDP resistance is mediated by upregulation of Notch1. In clinical settings, high expression of JARID2 is significantly associated with advanced TNM stage, shorter overall survival, and poor chemotherapeutic response. These findings point toward an important role of JARID2 in CDDP resistance and stemness of NSCLC and provide a promising target for overcoming CDDP resistance.
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Affiliation(s)
- Qun Wang
- Department of Radiation Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Oncology, The Fifth Hospital of Wuhan, Wuhan, China; WuHan University, Wuhan, China
| | - Jing Wu
- Department of Oncology, The Fifth Hospital of Wuhan, Wuhan, China
| | - Hua Wei
- Department of Radiology, The Fifth Hospital of Wuhan, Wuhan, China
| | - Hui Huang
- Department of Oncology, The Fifth Hospital of Wuhan, Wuhan, China
| | - Ying Huang
- Department of Oncology, The Fifth Hospital of Wuhan, Wuhan, China
| | - Hongyan Fang
- Department of Oncology, The Fifth Hospital of Wuhan, Wuhan, China
| | - Xiaojun Gong
- Department of General Surgery, The Fifth Hospital of Wuhan, Wuhan, China
| | - Jun Sun
- Department of Oncology, The Fifth Hospital of Wuhan, Wuhan, China
| | - Yujuan Wu
- Department of Oncology, The Fifth Hospital of Wuhan, Wuhan, China
| | - Changjiang Lei
- Department of General Surgery, The Fifth Hospital of Wuhan, Wuhan, China
| | - Jinming Yu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China.
| | - Desheng Hu
- Department of Radiation Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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16
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Zhang L, Yang P, Wang J, Liu Q, Wang T, Wang Y, Lin F. MiR-22 regulated T cell differentiation and hepatocellular carcinoma growth by directly targeting Jarid2. Am J Cancer Res 2021; 11:2159-2173. [PMID: 34094675 PMCID: PMC8167680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023] Open
Abstract
MiR-22 has been demonstrated to inhibits tumor growth in several cancers. However, its function in the tumor microenvironment is still unclear, especially for T cell differentiation. Here, miR-22 expression in the circulating T cells from hepatocellular carcinoma (HCC) patients and healthy controls was analyzed with quantitative polymerase chain reaction (qPCR). Diethylnitrosamine (DEN)/phenobarbital (PB)-mediated primary HCC and Hepa1-6 subcutaneous tumor mouse models were established and subjected to lenti-miR-22 injection. Mice immunoreconstituted with miR-22-overexpressing T cells were employed to investigate the antitumor effect of miR-22 in mice. Luciferase assay, immunofluorescent staining, in vitro Th17 cell differentiation assay, and rescue experiments were employed to investigate the mechanism underlying the miR-22-mediated regulation of Th17 cell differentiation and liver tumor growth. Results confirmed the dramatic downregulation of miR-22 expression in malignant tissues and circulating T cells from patients with HCC. MiR-22 expression correlated with good prognosis of patients. Overexpression of miR-22 impaired the DEN/PB-induced primary HCC formation and the growth of Hepa1-6 subcutaneous tumors by promoting Th17 differentiation. Injection of miR-22-overexpressing T cells in irradiated mice resulted in the inhibition of Hepa1-6 subcutaneous tumor growth via Th17 differentiation promotion. MiR-22 could directly bind to Jarid2, which played an important role during the miR-22-mediated regulation of Th17 differentiation. Taken together, our study expands the understanding of miR-22 function and provides a therapy target for HCC.
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Affiliation(s)
- Lian Zhang
- Department of Oncology, Affiliated Eighth People's Hospital, Jiangsu University Shanghai, China
| | - Ping Yang
- Department of Oncology, Affiliated Eighth People's Hospital, Jiangsu University Shanghai, China
| | - Jing Wang
- Department of Oncology, Affiliated Eighth People's Hospital, Jiangsu University Shanghai, China
| | - Qi Liu
- Department of Oncology, Affiliated Eighth People's Hospital, Jiangsu University Shanghai, China
| | - Tian Wang
- Department of Oncology, Affiliated Eighth People's Hospital, Jiangsu University Shanghai, China
| | - Yaling Wang
- Department of Oncology, Affiliated Eighth People's Hospital, Jiangsu University Shanghai, China
| | - Feng Lin
- Department of Oncology, Affiliated Eighth People's Hospital, Jiangsu University Shanghai, China
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17
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Abstract
2-Oxoglutarate-dependent dioxygenases (2OGDDs) are a superfamily of enzymes that play diverse roles in many biological processes, including regulation of hypoxia-inducible factor-mediated adaptation to hypoxia, extracellular matrix formation, epigenetic regulation of gene transcription and the reprogramming of cellular metabolism. 2OGDDs all require oxygen, reduced iron and 2-oxoglutarate (also known as α-ketoglutarate) to function, although their affinities for each of these co-substrates, and hence their sensitivity to depletion of specific co-substrates, varies widely. Numerous 2OGDDs are recurrently dysregulated in cancer. Moreover, cancer-specific metabolic changes, such as those that occur subsequent to mutations in the genes encoding succinate dehydrogenase, fumarate hydratase or isocitrate dehydrogenase, can dysregulate specific 2OGDDs. This latter observation suggests that the role of 2OGDDs in cancer extends beyond cancers that harbour mutations in the genes encoding members of the 2OGDD superfamily. Herein, we review the regulation of 2OGDDs in normal cells and how that regulation is corrupted in cancer.
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Affiliation(s)
- Julie-Aurore Losman
- Department of Medical Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Boston, MA, USA
- Division of Hematology, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Peppi Koivunen
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, Oulu Center for Cell-Matrix Research, University of Oulu, Oulu, Finland
| | - William G Kaelin
- Department of Medical Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Boston, MA, USA.
- Howard Hughes Medical Institute (HHMI), Chevy Chase, MD, USA.
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18
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Zhang X, Li J, Yang Q, Wang Y, Li X, Liu Y, Shan B. Tumor mutation burden and JARID2 gene alteration are associated with short disease-free survival in locally advanced triple-negative breast cancer. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1052. [PMID: 33145271 PMCID: PMC7576007 DOI: 10.21037/atm-20-3773] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background In locally advanced triple-negative breast cancer (TNBC), patients who did not achieve pathologic complete response (non-pCR) after neoadjuvant chemotherapy develop rapid tumor metastasis. Tumor mutation burden (TMB) is a potential biomarker of cancer therapy, though whether it is applicable to TNBC is still unclear. Methods A total of 14 non-pCR TNBC patients were enrolled, and tissue samples from radical operation were collected. Of these, 7 cases developed disease progression within 12 months after operation [short disease-free survival (short DFS)], while others showed longer DFS over 1 year (long DFS). Next generation sequencing (NGS) analysis targeting 422 cancer-related genes and in vitro studies were performed. Results A total of 72 mutations were detected within 14 patients, which ranged from 1 to 8 per patient with a median mutations number of 5. The median number of mutations in the short-DFS group was higher than that in the long-DFS group (6.0 vs. 4.3; P=0.094). Furthermore, 6 gene mutation types were detected, with missense mutations displayed in the majority (36/72, 50.0%). No correlation between mutation type and DFS was found. Among 422 cancer-related genes, alterations in 30 genes were detected. TP53 (12/14, 85.7%) was the most common mutation gene in the entire cohort. RB1 mutations significantly occurred in patients with high Ki-67 scores (P=0.013). Additionally, 4 mutations of PTPN13 (57.1%, 4/7) and 3 of JARID2 (42.9%, 3/7) were only detected in the short-DFS group, while patients with JARID2 mutation had a significantly shorter DFS period (P=0.026). Experiments in vitro confirmed that JARID2 gene was widely expressed in various breast cancer cell lines. Knockdown of JARID2 in MD-MBA-231 cells by small interfering RNA (siRNA) decreased the expression of E-cadherin, and increased the levels of vimentin, MMP7, and MMP9. Conclusions In non-pCR TNBC, JARID2 mutation and TMB elevated in patients with short-DFS, indicating the potential prognostic biomarkers and therapeutic molecular targets for locally advanced TNBC.
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Affiliation(s)
- Xiangmei Zhang
- Research Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jingping Li
- Breast Cancer Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Qing Yang
- Research Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yanfang Wang
- Medical Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xinhui Li
- Research Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yunjiang Liu
- Breast Cancer Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Baoen Shan
- Research Center, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
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19
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Zhu Z, Jin Z, Zhang H, Zhang M, Sun D. Integrative Clustering Reveals a Novel Subtype of Soft Tissue Sarcoma With Poor Prognosis. Front Genet 2020; 11:69. [PMID: 32127798 PMCID: PMC7038822 DOI: 10.3389/fgene.2020.00069] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 01/21/2020] [Indexed: 12/13/2022] Open
Abstract
Background Soft tissue sarcomas (STSs) are heterogeneous at the clinical and molecular level and need to be further sub-clustered for treatment and prognosis. Materials And Methods STSs were sub-clustered based on RNAseq and miRNAseq data extracted from The Cancer Genome Atlas (TCGA) through the combined process of similarity network fusion (SNF) and consensus clustering (CC). The expression and clinical characteristics of each sub-cluster were analyzed. The genes differentially expressed (lncRNAs, miRNAs, and mRNAs) between the poor prognosis and good prognosis clusters were used to construct a competing endogenous RNA (ceRNA) network. Functional enrichment analysis was conducted and a hub network was extracted from the constructed ceRNA network. Results A total of 247 STSs were classified into three optimal sub-clusters, and patients in cluster 2 (C2) had a significantly lower rate of survival. A ceRNA network with 91 nodes and 167 edges was constructed according to the hypothesis of ceRNA. Functional enrichment analysis revealed that the network was mainly associated with organism development functions. Moreover, LncRNA (KCNQ1OT1)-miRNA (has-miR-29c-3p)-mRNA (JARID2, CDK8, DNMT3A, TET1)-competing endogenous gene pairs were identified as hub networks of the ceRNA network, in which each component showed survival significance. Conclusion Integrative clustering analysis revealed that the STSs could be clustered into three sub-clusters. The ceRNA network, especially the subnetwork LncRNA (KCNQ1OT1)-miRNA (has-miR-29c-3p)-mRNA (JARID2, CDK8, DNMT3A, TET1) was a promising therapeutic target for the STS sub-cluster associated with a poor prognosis.
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Affiliation(s)
- Zhenhua Zhu
- Department of Orthopaedic Trauma, The First Hospital of Jilin University, Changchun, China
| | - Zheng Jin
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Haibo Zhang
- College of Chemistry, Jilin University, Changchun, China
| | - Mei Zhang
- College of Chemistry, Jilin University, Changchun, China
| | - Dahui Sun
- Department of Orthopaedic Trauma, The First Hospital of Jilin University, Changchun, China
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20
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Wang X, Lyu J, Ji A, Zhang Q, Liao G. Jarid2 enhances the progression of bladder cancer through regulating PTEN/AKT signaling. Life Sci 2019; 230:162-168. [DOI: 10.1016/j.lfs.2019.05.053] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 05/14/2019] [Accepted: 05/20/2019] [Indexed: 12/15/2022]
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21
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Pieters T, T'Sas S, Demoen L, Almeida A, Haenebalcke L, Matthijssens F, Lemeire K, D'Hont J, Van Rockeghem F, Hochepied T, Lintermans B, Reunes L, Lammens T, Berx G, Haigh JJ, Goossens S, Van Vlierberghe P. Novel strategy for rapid functional in vivo validation of oncogenic drivers in haematological malignancies. Sci Rep 2019; 9:10577. [PMID: 31332244 PMCID: PMC6646380 DOI: 10.1038/s41598-019-46853-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 07/05/2019] [Indexed: 12/17/2022] Open
Abstract
In cancer research, it remains challenging to functionally validate putative novel oncogenic drivers and to establish relevant preclinical models for evaluation of novel therapeutic strategies. Here, we describe an optimized and efficient pipeline for the generation of novel conditional overexpression mouse models in which putative oncogenes, along with an eGFP/Luciferase dual reporter, are expressed from the endogenous ROSA26 (R26) promoter. The efficiency of this approach was demonstrated by the generation and validation of novel R26 knock-in (KI) mice that allow conditional overexpression of Jarid2, Runx2, MN1 and a dominant negative allele of ETV6. As proof of concept, we confirm that MN1 overexpression in the hematopoietic lineage is sufficient to drive myeloid leukemia. In addition, we show that T-cell specific activation of MN1 in combination with loss of Pten increases tumour penetrance and stimulates the formation of Lyl1+ murine T-cell lymphoblastic leukemias or lymphomas (T-ALL/T-LBL). Finally, we demonstrate that these luciferase-positive murine AML and T-ALL/T-LBL cells are transplantable into immunocompromised mice allowing preclinical evaluation of novel anti-leukemic drugs in vivo.
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Affiliation(s)
- Tim Pieters
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,VIB Inflammation Research Center, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,Cancer Research Institute Ghent, Ghent, Belgium
| | - Sara T'Sas
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,VIB Inflammation Research Center, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,Cancer Research Institute Ghent, Ghent, Belgium
| | - Lisa Demoen
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,Cancer Research Institute Ghent, Ghent, Belgium
| | - André Almeida
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,Cancer Research Institute Ghent, Ghent, Belgium
| | - Lieven Haenebalcke
- VIB Inflammation Research Center, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Filip Matthijssens
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,Cancer Research Institute Ghent, Ghent, Belgium
| | - Kelly Lemeire
- VIB Inflammation Research Center, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jinke D'Hont
- VIB Inflammation Research Center, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Frederique Van Rockeghem
- VIB Inflammation Research Center, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Tino Hochepied
- VIB Inflammation Research Center, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Beatrice Lintermans
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,Cancer Research Institute Ghent, Ghent, Belgium
| | - Lindy Reunes
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,Cancer Research Institute Ghent, Ghent, Belgium
| | - Tim Lammens
- Cancer Research Institute Ghent, Ghent, Belgium.,Department of Pediatric Hematology-Oncology and Stem Cell Transplantation, Ghent University Hospital, Ghent, Belgium
| | - Geert Berx
- VIB Inflammation Research Center, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,Cancer Research Institute Ghent, Ghent, Belgium
| | - Jody J Haigh
- Mammalian Functional Genetics Group, Australian Centre for Blood Diseases, Monash University, Melbourne, VIC, Australia.,Department of Pharmacology and Therapeutics, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.,Research Institute in Oncology and Hematology, Cancer Care Manitoba, Winnipeg, Manitoba, Canada
| | - Steven Goossens
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium. .,VIB Inflammation Research Center, Ghent, Belgium. .,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium. .,Cancer Research Institute Ghent, Ghent, Belgium.
| | - Pieter Van Vlierberghe
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium. .,Cancer Research Institute Ghent, Ghent, Belgium.
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22
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Zhang Y, Liu J, Lv Y, Zhang C, Guo S. LncRNA meg3 suppresses hepatocellular carcinoma in vitro and vivo studies. Am J Transl Res 2019; 11:4089-4099. [PMID: 31396320 PMCID: PMC6684911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 06/09/2019] [Indexed: 06/10/2023]
Abstract
Although abnormal expression of the long non-coding RNA (lncRNA) MEG3 has been reported in multiple cancer types, the role of MEG3 in the pathobiology of hepatocellular carcinoma (HCC) remains unknown. This study evaluated the expression of lncRNA MEG3 and a microRNA (miRNA-10a-5p) implicated in HCC metastasis in cancer and carcinoma adjacent tissues of HCC samples (n=30 each) via in situ hybridization and quantitative RT-PCR. The effects of overexpressing either MEG3 alone, or MEG3 in combination with miRNA-10a-5p, on the proliferation, apoptosis, cell cycle progression, migration, and invasion of HepG2 cells were evaluated using functional assays. Dual luciferase reporter assays and western blotting were employed to delineate the mechanisms of MEG3 and miRNA-10a-5p regulation of key oncogenes and tumor suppressors in HCC cells. Compared to carcinoma-adjacent regions, MEG3 expression was downregulated in cancer regions of HCC samples; by contrast, miRNA-10a-5p was overexpressed in cancer regions compared to tumor-adjacent areas. Furthermore, overexpression of MEG3 (a) decreased proliferation, migration, and invasion of HepG2 cells; (b) enhanced apoptosis and the proportion of HepG2 cells in G1 of the cell cycle; (c) increased the expression of phosphatase and tensin homolog (PTEN), Bcl2-associated X (Bax), and p53 proteins; and (d) decreased the expression of miRNA-10a-5p, AKT, p-AKT, Bcl-2, and the matrix metalloproteinases (MMPs)-2 and -9. Furthermore, miRNA-10a-5p bound the 3-untranslated region of PTEN mRNA and downregulated PTEN protein expression. Taken together, these data suggest that MEG3 regulates the PTEN/AKT/MMP-2/MMP-9 signaling axis and contributes to HCC development by targeting miRNA-10a-5p.
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Affiliation(s)
- Yingying Zhang
- Department of Hand and Foot Surgery, Linyi Central HospitalLinyi 276400, Shandong, China
| | - Jinfeng Liu
- Department of Oncology, Rizhao Hospital of Traditional Chinese MedicineRizhao 276800, Shandong, China
| | - Yan Lv
- Department of Internal Medicine (4), Shandong Provincial Chest HospitalJinan 250013, Shandong, China
| | - Chao Zhang
- Department of Gastroenterology and Hepatobiliary Discipline, Rizhao Hospital of Traditional Chinese MedicineRizhao 276800, Shandong, China
| | - Shuai Guo
- Department of Oncology, Shandong Provincial Chest HospitalJinan 250013, Shandong, China
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Liang X, Chu G, Wang L, Lai G, Zhao Y. Role of Nkx2.5 in H 2O 2-induced Nsd1 suppression. Cell Stress Chaperones 2019; 24:697-707. [PMID: 31104268 PMCID: PMC6629736 DOI: 10.1007/s12192-019-00995-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 03/18/2019] [Accepted: 04/04/2019] [Indexed: 11/24/2022] Open
Abstract
Nuclear receptor-binding SET domain-containing protein 1 (Nsd1) acts as a histone lysine methyltransferase, and its role in oxidative stress-related abnormal embryonic heart development remains poorly understood. In the present study, H2O2 decreased the expression of Nsd1 and NK2 transcription factor related locus 5 (Nkx2.5). We further focused on Nkx2.5 modulating the transcription of Nsd1 in response to H2O2. Luciferase activity analysis indicated that a regulatory region from - 646 to - 282 is essential for the basal transcriptional activity, in which, an a Nkx2.5-binding element (NKE) was identified at - 412/- 406 of the Nsd1 promoter by electrophoresis mobility shift assay and a chromatin immunoprecipitation assay. H2O2 obviously reduced the p646-luc promoter activity, and the depletion of Nkx2.5 expression weakened H2O2 inhibition on the p646-luc promoter. The overexpression of Nkx2.5 increase Nsd1 p646-luc promoter activity, but did not affected p646-luc-mut. Furthermore, overexpression and depletion of Nkx2.5 led to the increase and decrease of Nsd1 protein and mRNA levels. These data indicated that H2O2-induced Nsd1 suppression resulted from the decrease of Nkx2.5 expression through the NKE element.
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Affiliation(s)
- Xiaoyan Liang
- Department of Clinical Genetics, China Medical University, No.36 San Hao Street, Shenyang, 110004, Liaoning, China
- Central Laboratory, Binzhou People's Hospital, Binzhou, 256600, Shandong, China
| | - Guoming Chu
- Department of Clinical Genetics, China Medical University, No.36 San Hao Street, Shenyang, 110004, Liaoning, China
| | - Leitong Wang
- Department of Clinical Genetics, China Medical University, No.36 San Hao Street, Shenyang, 110004, Liaoning, China
| | - Guangrui Lai
- Department of Clinical Genetics, China Medical University, No.36 San Hao Street, Shenyang, 110004, Liaoning, China
| | - Yanyan Zhao
- Department of Clinical Genetics, China Medical University, No.36 San Hao Street, Shenyang, 110004, Liaoning, China.
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IL-37b suppresses epithelial mesenchymal transition in hepatocellular carcinoma by inhibiting IL-6/STAT3 signaling. Hepatobiliary Pancreat Dis Int 2018; 17:408-415. [PMID: 30201411 DOI: 10.1016/j.hbpd.2018.08.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/24/2018] [Indexed: 02/05/2023]
Abstract
BACKGROUND Interleukin-37b (IL-37b), a vital negative regulator of the innate immune system, has been reported to be a tumor inhibitor in different type of cancers. However, little is known about the relationship between IL-37b and hepatocellular carcinoma (HCC). The present study aimed to investigate the potential roles of IL-37b in HCC progression. METHODS Subjects (n = 237) were recruited, and serum IL-37b was measured using ELISA. The tumor-suppressive capacity and underlying mechanisms of IL-37b in HCC were investigated in vitro and in vivo. RESULTS Compared to healthy controls, serum IL-37b levels were elevated in chronic hepatitis B (CHB) patients but decreased significantly in HBV-HCC patients, especially for those with portal venous tumor thrombus. Low level serum IL-37b in HBV-HCC patients correlated with high HCC stage and poor overall survival and disease-free survival. In vitro and in vivo, recombinant human IL-37b inhibited proliferation and metastasis in HCC cells. Furthermore, IL-37b inhibited epithelial mesenchymal transition in HCC cells in vitro by downregulating IL-6, pSTAT3 (Y705), N-cadherin, and vimentin expression and by upregulating E-cadherin expression. These effects were partially reversed by transfection of adenovirus encoding human IL-6. CONCLUSIONS IL-37b inhibits HCC growth, metastasis and epithelial mesenchymal transition by regulating IL-6/STAT3 signaling. Serum IL-37b may be a biomarker for HBV-HCC and its staging.
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25
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Liu L, Long H, Wu Y, Li H, Dong L, Zhong JL, Liu Z, Yang X, Dai X, Shi L, Ren M, Lin Z. HRD1-mediated PTEN degradation promotes cell proliferation and hepatocellular carcinoma progression. Cell Signal 2018; 50:90-99. [DOI: 10.1016/j.cellsig.2018.06.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 06/01/2018] [Accepted: 06/20/2018] [Indexed: 10/28/2022]
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26
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Adhikari A, Davie J. JARID2 and the PRC2 complex regulate skeletal muscle differentiation through regulation of canonical Wnt signaling. Epigenetics Chromatin 2018; 11:46. [PMID: 30119689 PMCID: PMC6097338 DOI: 10.1186/s13072-018-0217-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 08/10/2018] [Indexed: 12/31/2022] Open
Abstract
Background JARID2 is a non-catalytic member of the polycomb repressive complex 2 (PRC2), which is known to regulate developmental target genes in embryonic stem cells. Here, we provide mechanistic insight into the modulation of Wnt signaling by JARID2 during murine skeletal muscle differentiation. Results We show that JARID2 is expressed in proliferating myoblasts, but downregulated upon muscle differentiation. Unexpectedly, depletion of JARID2 or the catalytic subunit of the PRC2 complex, EZH2, inhibited differentiation, suggesting that JARID2 and the PRC2 complex are required to initiate this process. Expression of the myogenic regulatory factors required to promote differentiation, MYOD and MYOG, was downregulated in the absence of JARID2, even though decreases in the methylation of histone H3 lysine 27 (H3K27me3) were observed on both promoters. We found that activation of the Wnt signaling pathway upregulated MYOD and restored differentiation. Activation of the Wnt pathway in JARID2 depleted cells caused β-catenin to translocate to the nucleus, where it bound to and activated the Myod1 promoter. We show that the Wnt antagonist SFRP1 is highly upregulated in the absence of JARID2 and is a direct target of JARID2 and the PRC2 complex. Ectopic expression of SFRP1 blocked MYOD and late muscle gene expression and inhibited the translocation of β-catenin to the nucleus. Finally, we show that JARID2 and SFRP1 are inversely correlated in melanoma, confirming that the JARID2-mediated repression of SFRP1 extends beyond skeletal muscle and has important implications in many cellular systems, including cancer. Conclusions We show that JARID2 and the PRC2 complex regulate muscle differentiation by modulating Wnt signaling through the direct repression of Wnt antagonists. Electronic supplementary material The online version of this article (10.1186/s13072-018-0217-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Abhinav Adhikari
- Department of Biochemistry and Molecular Biology and Simmons Cancer Institute, Southern Illinois University School of Medicine, Carbondale, IL, 62901, USA
| | - Judith Davie
- Department of Biochemistry and Molecular Biology and Simmons Cancer Institute, Southern Illinois University School of Medicine, Carbondale, IL, 62901, USA.
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27
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A new metabolic gene signature in prostate cancer regulated by JMJD3 and EZH2. Oncotarget 2018; 9:23413-23425. [PMID: 29805743 PMCID: PMC5955128 DOI: 10.18632/oncotarget.25182] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 04/04/2018] [Indexed: 12/18/2022] Open
Abstract
Histone methylation is essential for gene expression control. Trimethylated lysine 27 of histone 3 (H3K27me3) is controlled by the balance between the activities of JMJD3 demethylase and EZH2 methyltransferase. This epigenetic mark has been shown to be deregulated in prostate cancer, and evidence shows H3K27me3 enrichment on gene promoters in prostate cancer. To study the impact of this enrichment, a transcriptomic analysis with TaqMan Low Density Array (TLDA) of several genes was studied on prostate biopsies divided into three clinical grades: normal (n = 23) and two tumor groups that differed in their aggressiveness (Gleason score ≤ 7 (n = 20) and >7 (n = 19)). ANOVA demonstrated that expression of the gene set was upregulated in tumors and correlated with Gleason score, thus discriminating between the three clinical groups. Six genes involved in key cellular processes stood out: JMJD3, EZH2, MGMT, TRA2A, U2AF1 and RPS6KA2. Chromatin immunoprecipitation demonstrated collocation of EZH2 and JMJD3 on gene promoters that was dependent on disease stage. Gene set expression was also evaluated on prostate cancer cell lines (DU 145, PC-3 and LNCaP) treated with an inhibitor of JMJD3 (GSK-J4) or EZH2 (DZNeP) to study their involvement in gene regulation. Results showed a difference in GSK-J4 sensitivity under PTEN status of cell lines and an opposite gene expression profile according to androgen status of cells. In summary, our data describe the impacts of JMJD3 and EZH2 on a new gene signature involved in prostate cancer that may help identify diagnostic and therapeutic targets in prostate cancer.
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28
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Lu J, Wang Z, Li S, Xin Q, Yuan M, Li H, Song X, Gao H, Pervaiz N, Sun X, Lv W, Jing T, Zhu Y. Quercetin Inhibits the Migration and Invasion of HCCLM3 Cells by Suppressing the Expression of p-Akt1, Matrix Metalloproteinase (MMP) MMP-2, and MMP-9. Med Sci Monit 2018; 24:2583-2589. [PMID: 29701200 PMCID: PMC5941983 DOI: 10.12659/msm.906172] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background Quercetin is a natural bioactive flavonoid that is present in a wide variety of vegetables and fruits and exhibits a promising anti-metastasis property in various human cancer cells. However, the effect of quercetin on human HCCLM3 cells is unclear. Material/Methods In the current study, a wound-healing assay was performed using quercetin-treated HCCLM3 cells to further explore whether quercetin affects the motility of human HCCLM3 cells. Transwell assay was used to explore the potential effect of quercetin in HCCLM3 cells on cell migration and cell invasion. Western blotting analysis was used to explore the expression of p-Akt1, MMP-2, and MMP-9 in quercetin-treated HCCLM3 cells. Results The wound-healing time was delayed in quercetin-treated HCCLM3 cells, and the ability to migrate and invade was inhibited in quercetin-treated human HCCLM3 cells. Moreover, the protein levels of p-Akt1, MMP-2, and MMP-9 were down-regulated in quercetin-treated HCCLM3 cells, as detected by Western blotting. Conclusions Our data show that quercetin attenuated cell migration and invasion by suppressing the protein levels of p-Akt1, MMP-2, and MMP-9 in HCCLM3 cells.
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Affiliation(s)
- Jun Lu
- Institute of Pathogenic Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China (mainland)
| | - Zhiqiang Wang
- Gansu Provincial Maternity and Child-Care Hospital, Lanzhou, Gansu, China (mainland)
| | - Shuyan Li
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, China (mainland)
| | - Qi Xin
- Institute of Pathogenic Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China (mainland)
| | - Miaomiao Yuan
- Institute of Pathogenic Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China (mainland)
| | - Huanping Li
- Institute of Pathogenic Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China (mainland)
| | - Xiaoxia Song
- Institute of Pathogenic Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China (mainland)
| | - Haijun Gao
- Institute of Pathogenic Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China (mainland)
| | - Nabeel Pervaiz
- Institute of Pathogenic Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China (mainland)
| | - Xudong Sun
- Institute of Pathogenic Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China (mainland)
| | - Wei Lv
- Institute of Pathogenic Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China (mainland)
| | - Tao Jing
- Institute of Pathogenic Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China (mainland)
| | - Yanmei Zhu
- Department of Physiology, School of Basic Medical Sciences, Qinghai University, Xining, Qinghai, China (mainland)
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29
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POU5F1B promotes hepatocellular carcinoma proliferation by activating AKT. Biomed Pharmacother 2018; 100:374-380. [DOI: 10.1016/j.biopha.2018.02.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 02/08/2018] [Accepted: 02/09/2018] [Indexed: 12/14/2022] Open
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30
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Zhu XX, Yan YW, Ai CZ, Jiang S, Xu SS, Niu M, Wang XZ, Zhong GS, Lu XF, Xue Y, Tian S, Li G, Tang S, Jiang YZ. Jarid2 is essential for the maintenance of tumor initiating cells in bladder cancer. Oncotarget 2018; 8:24483-24490. [PMID: 28445934 PMCID: PMC5421864 DOI: 10.18632/oncotarget.15522] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 02/07/2017] [Indexed: 11/25/2022] Open
Abstract
Bladder cancer is the most common urologic malignancy in China, with an increase of the incidence and mortality rates over past decades. Recent studies suggest that bladder tumors are maintained by a rare fraction of cells with stem cell proprieties. Targeting these bladder tumor initiating cell (TICs) population can overcome the drug-resistance of bladder cancer. However, the molecular and genetic mechanisms regulating TICs in bladder cancer remain poorly defined. Jarid2 is implicated in signaling pathways regulating cancer cell epithelial-mesenchymal transition, and stem cell maintenance. The goal of our study was to examine whether Jarid2 plays a role in the regulation of TICs in bladder cancer. We found that knockdown of Jarid2 was able to inhibit the invasive ability and sphere-forming capacity in bladder cancer cells. Moreover, knockdown of Jarid2 reduced the proportion of TICs and impaired the tumorigenicity of bladder cancer TICs in vivo. Conversely, ectopic overexpression of Jarid2 promoted the invasive ability and sphere-forming capacity in bladder cancer cells. Mechanistically, reduced Jarid2 expression led to the upregulation of p16 and H3K27me3 level at p16 promoter region. Collectively, we provided evidence that Jarid2 via modulation of p16 is a putative novel therapeutic target for treating malignant bladder cancer.
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Affiliation(s)
- Xin-Xing Zhu
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, China.,Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong, China
| | - Ya-Wei Yan
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, China.,Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong, China
| | - Chun-Zhi Ai
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, China
| | - Shan Jiang
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, China
| | - Shan-Shan Xu
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, China
| | - Min Niu
- Department of Statics, University of Wisconsin-Madison, Madison, WI, USA
| | - Xiang-Zhen Wang
- Maternal and Child Health Hospital of Nanshan District, Shenzhen, Guangdong, China
| | - Gen-Shen Zhong
- The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan, China
| | - Xi-Feng Lu
- Department of Physiology, Center for Diabetes, Obesity and Metabolism, Shenzhen University, Shenzhen, Guangdong, China
| | - Yu Xue
- Minnan Normal University, Zhangzhou, Fujian, China
| | - Shaoqi Tian
- The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Guangyao Li
- Department of Health Outcomes and Policy, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Shaojun Tang
- Innovation Center for Biomedical Informatics, Georgetown University Medical Center, Washington, DC, USA
| | - Yi-Zhou Jiang
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, China
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Suong DNA, Shimaji K, Pyo JH, Park JS, Yoshida H, Yoo MA, Yamaguchi M. Overexpression of dJmj differentially affects intestinal stem cells and differentiated enterocytes. Cell Signal 2018; 42:194-210. [DOI: 10.1016/j.cellsig.2017.10.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 10/19/2017] [Accepted: 10/29/2017] [Indexed: 01/17/2023]
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32
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Lei X, Liang Y, Chen J, Xiao S, Lei J, Li J, Duanmu J, Jiang Q, Liu D, Tang C, Li T. Sorcin Predicts Poor Prognosis and Promotes Metastasis by Facilitating Epithelial-mesenchymal Transition in Hepatocellular Carcinoma. Sci Rep 2017; 7:10049. [PMID: 28855589 PMCID: PMC5577205 DOI: 10.1038/s41598-017-10365-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 08/09/2017] [Indexed: 01/27/2023] Open
Abstract
Metastasis-associated recurrence is the main cause for the poor prognosis of hepatocellular carcinoma (HCC). However, the detailed molecular mechanisms underlying HCC metastasis remain elusive. Though some data indicated the oncogenic role of Sorcin in tumors, the prognostic value and biological role of Sorcin in HCC is still unknown. In this study, it demonstrated that Sorcin expression levels were significantly upregulated in HCC tumor tissues compared with matched adjacent nontumorous liver tissues and normal liver tissues, and such expression level correlated with HCC metastasis. High Sorcin expression was significantly correlated with aggressive clinicopathological characteristics such as multiple tumor nodules, high Edmondson-Steiner grade, microvascular invasion, advanced TNM stage and advanced BCLC stage (all P < 0.05). HCC patients with high Sorcin expression had both shorter survival and higher recurrence than those with low Sorcin expression (all P < 0.05). Sorcin expression was an independent and significant risk factor for survival and recurrence of HCC patients. Results of functional experiments showed that Sorcin could promote HCC cell proliferation, migration, and invasion in vitro, and facilitate HCC growth and metastasis in vivo. Mechanistically, Sorcin exerted its role by activating extracellular signal-regulated kinase (ERK) pathway and promoted metastasis by facilitating epithelial-mesenchymal transition (EMT) in HCC.
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Affiliation(s)
- Xiong Lei
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Yahang Liang
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Jian Chen
- Department of Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Shuai Xiao
- Liver Cancer Laboratory, Department of Surgery, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Jian Lei
- Department of Pathology, Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, China
| | - Jianfeng Li
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Jinzhong Duanmu
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Qunguang Jiang
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Dongning Liu
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Cheng Tang
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Taiyuan Li
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China.
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Cao J, Li H, Liu G, Han S, Xu P. Knockdown of JARID2 inhibits the proliferation and invasion of ovarian cancer through the PI3K/Akt signaling pathway. Mol Med Rep 2017; 16:3600-3605. [PMID: 28765957 DOI: 10.3892/mmr.2017.7024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Accepted: 05/26/2017] [Indexed: 11/06/2022] Open
Abstract
Protein Jumonji (JARID2), a member of the family of JmjC domain-containing proteins, has been reported to serve an important role in tumor growth and metastasis. However, the expression pattern and role of JARID2 in ovarian cancer remains unclear. Therefore, in the present study, the role of JARID2 in ovarian cancer was investigated, as well as the underlying mechanisms. The results of the present study demonstrated that the expression of JARID2 is upregulated in human ovarian cancer cell lines. Furthermore, downregulation of JARID2 significantly suppressed proliferation, migration, invasion and epithelial‑mesenchymal transition in human ovarian cancer cells. Mechanistically, downregulation of JARID2 decreased the protein expression levels of phosphorylated phosphoinositide 3‑kinase (PI3K) and protein kinase B (Akt) in ovarian cancer cells. In conclusion the observations suggested that knockdown of JARID2 inhibited proliferation, migration and invasion in vitro through the inactivation of the PI3K/Akt signaling pathway. Therefore, JARID2 may represent a potential therapeutic target for the treatment of ovarian cancer.
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Affiliation(s)
- Jian Cao
- Department of Obstetrics and Gynecology, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu 210004, P.R. China
| | - Huiling Li
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Guangquan Liu
- Department of Obstetrics and Gynecology, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu 210004, P.R. China
| | - Suping Han
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Pengfei Xu
- Nanjing Maternal and Child Health Institute, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu 210004, P.R. China
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Jiang Y, Chen Y, Chen Y. Knockdown of JARID2 inhibits the viability and migration of placenta trophoblast cells in preeclampsia. Mol Med Rep 2017; 16:3594-3599. [PMID: 28714012 DOI: 10.3892/mmr.2017.7011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 05/18/2017] [Indexed: 11/06/2022] Open
Abstract
Protein Jumonji (JARID2) is a member of the Jumonji family of proteins and has been demonstrated to regulate cell proliferation and invasion. However, little is known about the role of JARID2 in the metastasis of placenta trophoblast cells. In the present study, the effect and the underlying molecular mechanism of JARID2 on trophoblast cell viability and invasion was investigated. The expression of JARID2 in placental tissues was analyzed by reverse transcription‑quantitative polymerase chain reaction and western blotting. HTR8/SVneo cells were transfected with si‑JARID2 or scramble for 24 h. Cell viability, migration and invasion in HTR8/SVneo cells were then evaluated. The expression levels of matrix metallopeptidase 2 (MMP2), MMP9, phosphorylated phosphatidylinositol 3‑kinase (p‑PI3K), PI3K, phosphorylated AKT serine/threonine kinase 1 (p‑Akt) and Akt in HTR8/SVneo cells were also detected using western blotting. The results of the present study demonstrated that JARID2 is underexpressed in human preeclamptic placentas. The knockdown of JARID2 significantly inhibited the viability, migration and invasion of HTR8/SVneo cells. In addition, the knockdown of JARID2 significantly decreased the levels of phosphorylated PI3K and Akt in HTR8/SVneo cells. The results of the present study demonstrated that JARID2 may serve a role in the progression of preeclampsia. The knockdown of JARID2 inhibited the viability and invasion of trophoblast cells in preeclampsia by suppressing the PI3K/Akt signaling pathway. Therefore, JARID2 may serve as a novel potential target for treating preeclampsia.
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Affiliation(s)
- Yatao Jiang
- Department of Obstetrics and Gynecology, Fujian Provincial Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Yuqing Chen
- Department of Obstetrics and Gynecology, Fujian Provincial Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Yanping Chen
- Department of Obstetrics and Gynecology, Fujian Provincial Hospital, Fuzhou, Fujian 350001, P.R. China
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Su H, Zhu G, Rong X, Zhou Y, Jiang P, Chen P. Upregulation of ATG4A promotes osteosarcoma cell epithelial-to-mesenchymal transition through the Notch signaling pathway. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:7975-7982. [PMID: 31966649 PMCID: PMC6965260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 01/12/2017] [Indexed: 06/10/2023]
Abstract
Osteosarcoma is a malignant tumor in children and adolescents. Previous studies showed that ATG4A is an autophagy-related gene involved in cancers. In this study, we aimed to identify the biological role of ATG4A in osteosarcoma. The expression levels of ATG4A were analyzed in osteosarcoma tissues by using reverse transcription-quantitative polymerase chain reaction (qRT-PCR) and western blotting. ATG4A was knocked-down or overexpressed in SAOS2 and HOS cell lines by transfection. Cell counting kit-8 (CCK-8) and clone formation assay were used to assess the effects of ATG4A on cell proliferation. Wound healing and Transwell assays were performed to evaluate the effects of ATG4A on cell migration and invasion, respectively. Epithelial-mesenchymal transition (EMT) markers and Notch signaling pathway targeting molecules were examined by western blotting. The results indicated that ATG4A was up-regulated in osteosarcoma tissues. In SAOS2 cells, knockdown of ATG4A inhibited the proliferation, migration and invasion, up-regulated the expression of E-cadherin and down-regulated the expression of vimentin, Notch1 and Hes1. In HOS cells, overexpression of ATG4A promoted the proliferation, migration and invasion, up-regulated the expression of vimentin, Notch1 and Hes1 and down-regulated the expression of E-cadherin. In conclusion, these findings demonstrate that ATG4A is up-regulated in osteosarcoma tissues. In osteosarcoma cells, ATG4A promotes the EMT process partly by the Notch signaling pathway. These results suggest that ATG4A might represent a potential therapeutic target for patients with osteosarcoma.
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Affiliation(s)
- Han Su
- Department of Orthopedic, Wuxi Second Hospital Affiliated to Nanjing Medical University Wuxi, China
| | - Guoxing Zhu
- Department of Orthopedic, Wuxi Second Hospital Affiliated to Nanjing Medical University Wuxi, China
| | - Xiaoxu Rong
- Department of Orthopedic, Wuxi Second Hospital Affiliated to Nanjing Medical University Wuxi, China
| | - Yan Zhou
- Department of Orthopedic, Wuxi Second Hospital Affiliated to Nanjing Medical University Wuxi, China
| | - Ping Jiang
- Department of Orthopedic, Wuxi Second Hospital Affiliated to Nanjing Medical University Wuxi, China
| | - Peng Chen
- Department of Orthopedic, Wuxi Second Hospital Affiliated to Nanjing Medical University Wuxi, China
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Ha SD, Cho W, Kim SO. HDAC8 Prevents Anthrax Lethal Toxin-induced Cell Cycle Arrest through Silencing PTEN in Human Monocytic THP-1 Cells. Toxins (Basel) 2017; 9:E162. [PMID: 28509866 PMCID: PMC5450710 DOI: 10.3390/toxins9050162] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 05/09/2017] [Accepted: 05/10/2017] [Indexed: 02/08/2023] Open
Abstract
Anthrax lethal toxin (LeTx) is a cytotoxic virulence factor that causes cell cycle arrest and cell death in various cell types. However, susceptibility to the cytotoxic effects varies depending on cell types. In proliferating monocytes, LeTx has only transient cytotoxic effects due to activation of the phosphoinositide 3-kinase (PI3K)-AKT-mediated adaptive responses. To date, the mechanism of LeTx in activating PI3K-AKT signaling axis is unknown. This study shows that the histone deacetylase 8 (HDAC8) is involved in activating PI3K-AKT signaling axis through down-regulating the phosphatase and tensin homolog 1 (PTEN) in human monocytic THP-1 cells. The HDAC8-specific activator TM-2-51 and inhibitor PCI-34051 enhanced and prevented, respectively, AKT activation and cell cycle progression in LeTx-treated cells. Furthermore, HDAC8 induced tri-methylation of histone H3 lysine 27 (H3K27me3), which is known to suppress PTEN expression, through at least in part down-regulating the H3K27me3 eraser Jumonji Domain Containing (JMJD) 3. Importantly, the JMJD3-specific inhibitor GSK-J4 induced AKT activation and protected cell cycle arrest in LeTx-treated cells, regardless the presence of HDAC8 activity. Collectively, this study for the first time demonstrated that HDAC8 activity determines susceptibility to cell cycle arrest induced by LeTx, through regulating the PI3K-PTEN-AKT signaling axis.
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Affiliation(s)
- Soon-Duck Ha
- Department of Microbiology and Immunology, The University of Western Ontario, London, ON N6G 2V4, Canada.
| | - Woohyun Cho
- Department of Microbiology and Immunology, The University of Western Ontario, London, ON N6G 2V4, Canada.
| | - Sung Ouk Kim
- Department of Microbiology and Immunology, The University of Western Ontario, London, ON N6G 2V4, Canada.
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Li Z, Xu C, Gao M, Ding B, Wei X, Ji N. Reduced Expression of Jumonji AT-Rich Interactive Domain 2 (JARID2) in Glioma Inhibits Tumor Growth In Vitro and In Vivo. Oncol Res 2017; 25:365-372. [PMID: 27641964 PMCID: PMC7841153 DOI: 10.3727/096504016x14738135889976] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Jumonji AT-rich interactive domain 2 (JARID2) is a member of the Jumonji family of proteins and has been proposed as an oncogene in several types of human cancer. However, the role of JARID2 in human glioma has not yet been understood. The present study was designed to determine the roles of JARID2 in the proliferation and migration in human glioma cells and the growth of glioma cells in nude mice. Our data indicate that JARID2 is upregulated in human glioma tissues and cell lines. Knockdown of JARID2 obviously inhibits the proliferation of U87MG cells and tumor growth in vivo. Furthermore, knockdown of JARID2 inhibits migration and invasion as well as the epithelial-mesenchymal transition (EMT) process in U87MG cells. Mechanistically, knockdown of JARID2 reduces the phosphorylation levels of PI3K and Akt in U87MG cells. In summary, our study is the first one in our knowledge to indicate that JARID2 plays an important role in glioma development and progression. Therefore, JARID2 may serve as a potential therapeutic target for the treatment of glioma.
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Affiliation(s)
- Zhenjiang Li
- *Department of Neurology, Huaihe Hospital of Henan University, Kaifeng, P.R. China
| | - Chenyang Xu
- *Department of Neurology, Huaihe Hospital of Henan University, Kaifeng, P.R. China
| | - Ming Gao
- *Department of Neurology, Huaihe Hospital of Henan University, Kaifeng, P.R. China
| | - Bingqian Ding
- *Department of Neurology, Huaihe Hospital of Henan University, Kaifeng, P.R. China
| | - Xinting Wei
- †Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, P.R. China
| | - Nan Ji
- ‡Department of Neurosurgery, Tiantan Hospital, Capital Medical University, Beijing, P.R. China
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Electric field-induced suppression of PTEN drives epithelial-to-mesenchymal transition via mTORC1 activation. J Dermatol Sci 2016; 85:96-105. [PMID: 27919618 DOI: 10.1016/j.jdermsci.2016.11.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 11/03/2016] [Accepted: 11/17/2016] [Indexed: 01/05/2023]
Abstract
BACKGROUND Naturally occurring electric fields (EFs) are an intrinsic property of wounds. Endogenous EFs in skin wounds play critical roles in the dynamic and well-ordered biological process of wound healing. The epithelial-to-mesenchymal transition (EMT) allows keratinocytes to transition from sedentary cells to motile cells, facilitating wound healing. However, EMT-related studies have been performed without considering endogenous EFs. Thus, the relationship between electrical signals and the EMT remain elusive. OBJECTIVE Phosphatase and tension homolog (PTEN) and mammalian target of rapamycin complex 1 (mTORC1) are key molecules in sensing electrical cues, and they play significant roles in cellular responses to EFs. In addition, these molecules are closely related to the occurrence of the EMT in other cells. We used primary human keratinocytes to investigate the influence of EFs on the EMT as well as the roles of PTEN and mTORC1 in this process. METHODS The effects of EFs on the EMT were investigated by analyzing the levels of specific proteins and transcription factors. The roles of mTORC1 and PTEN and their relationship with each other were studied via pharmacological inhibition or genetic knockdown. A Zeiss imaging system and scratch assays were used to study single-cell motility and monolayer cell migration. RESULTS EFs induced a range of both biochemical changes (e.g., increased Snail, Slug, vimentin, and N-cadherin expression, decreased E-cadherin expression) and functional changes (e.g., enhanced migratory capacity) that are characteristic of the EMT. EF-stimulated cells exhibited suppressed PTEN expression, and further PTEN downregulation led to the acquisition of more mesenchymal features and the loss of epithelial characteristics, which was accompanied by increased migratory capacity. PTEN overexpression reversed the EF-induced EMT and inhibited the migratory capacity of keratinocytes. EF-induced mTORC1 activation was a required component of the causal relationship between PTEN suppression and the EMT, as mTORC1 inhibition reversed the EMT induced by PTEN downregulation. CONCLUSIONS Our data demonstrate that the EF-induced suppression of PTEN drives the EMT via mTORC1 activation, thereby revealing a new and promising role of EFs in facilitating wound reepithelialization. These results provide a novel perspective regarding the significance of EFs in wound healing; therefore, electrical stimulation offers a new avenue of wound management for improved and accelerated wound healing.
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Zhang X, Li S, Dong C, Xie X, Zhang Y. Knockdown of Long Noncoding RNA NR_026689 Inhibits Proliferation and Invasion and Increases Apoptosis in Ovarian Carcinoma HO-8910PM Cells. Oncol Res 2016; 25:259-265. [PMID: 27624216 PMCID: PMC7840675 DOI: 10.3727/096504016x14732503870766] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Ovarian cancer is one of the leading causes of gynecological cancer-related deaths worldwide. We investigated the role of a newly discovered long noncoding RNA, NR_026689, in cell proliferation, metastasis, and apoptosis in ovarian cancer cells. Our results showed that NR_026689 was overexpressed in both clinical ovarian cancer patients and cultured ovarian cancer cells. Knockdown of NR_026689 in HO-8910PM cells significantly decreased the cell proliferative rate and the ability to form colonies. Transwell assays revealed that depletion of NR_026689 suppressed cell migration ability by 68% and cell invasive capacity by 71% in HO-8910PM cells. Moreover, specific shRNAs against NR_026689 notably promoted cell apoptosis in HO-8910PM cells by upregulating the expression of proapoptotic proteins, including caspase 3, caspase 9, cytochrome C, and PARP. Our study suggests an oncogenic potential of NR_026689 in ovarian cancer and might provide novel clues for the diagnosis and treatment of ovarian cancer in the clinic.
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Affiliation(s)
- Xin Zhang
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, P.R. China
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