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Du J, Su Y, Gao J, Tai Y. The expression and function of long noncoding RNAs in hepatocellular carcinoma. CANCER INNOVATION 2023; 2:488-499. [PMID: 38125766 PMCID: PMC10730004 DOI: 10.1002/cai2.90] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/23/2023] [Accepted: 07/07/2023] [Indexed: 12/23/2023]
Abstract
With the deepening of the genome project study, attention on noncoding RNAs is increasing. Long noncoding RNAs (lncRNAs) have become a new research hotspot. A growing number of studies have revealed that lncRNAs are involved in tumorigenesis and tumor suppressor pathways. Aberrant expressions of lncRNAs have been found in a variety of human tumors including hepatocellular carcinoma (HCC). In this review, we provide a brief introduction to lncRNA and highlight recent research on the functions and clinical significance of lncRNAs in HCC.
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Affiliation(s)
- Jingli Du
- Senior Department of TuberculosisThe 8th Medical Center of PLA General HospitalBeijingChina
| | - Yue Su
- Senior Department of TuberculosisThe 8th Medical Center of PLA General HospitalBeijingChina
| | - Jianzhi Gao
- Department of OncologyZhuozhou Hospital, ZhuozhouHebeiChina
| | - Yanhong Tai
- Department of PathologyThe 5th Medical Center of PLA General HospitalBeijingChina
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2
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Zhang Y, Wang X, Zhang C, Yi H. The dysregulation of lncRNAs by epigenetic factors in human pathologies. Drug Discov Today 2023; 28:103664. [PMID: 37348827 DOI: 10.1016/j.drudis.2023.103664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 06/05/2023] [Accepted: 06/06/2023] [Indexed: 06/24/2023]
Abstract
Dysregulation of long noncoding RNAs (lncRNAs) contributes to numerous human diseases, including cancers and autoimmune diseases (ADs). Given the importance of lncRNAs in disease initiation and progression, a deeper understanding of their complex regulatory network is required to facilitate their use as therapeutic targets for ADs. In this review, we summarize how lncRNAs are dysregulated in pathological states by epigenetic factors, including RNA-binding proteins, chemical modifications (N6-methyladenosine, 5-methylcytosine, 7-methylguanosine, adenosine-to-inosine editing, microRNA, alternative splicing, DNA methylation, and histone modification). Moreover, the roles of lncRNA epigenetic regulators in immune response and ADs are discussed, providing new insights into the complicated epigenetic factor-lncRNA network, thus, laying a theoretical foundation for future research and clinical application of lncRNAs.
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Affiliation(s)
- Yanli Zhang
- Central Laboratory, The First Hospital of Jilin University, Changchun, Jilin, China; Key Laboratory of Organ Regeneration and Transplantation, Ministry of Education, Changchun, Jilin 130021, China; Department of Echocardiography, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Xiaocong Wang
- Department of Echocardiography, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Chen Zhang
- Colorectal and Anal Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Huanfa Yi
- Central Laboratory, The First Hospital of Jilin University, Changchun, Jilin, China; Key Laboratory of Organ Regeneration and Transplantation, Ministry of Education, Changchun, Jilin 130021, China.
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3
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Ebrahimi N, Parkhideh S, Samizade S, Esfahani AN, Samsami S, Yazdani E, Adelian S, Chaleshtori SR, Shah-Amiri K, Ahmadi A, Aref AR. Crosstalk between lncRNAs in the apoptotic pathway and therapeutic targets in cancer. Cytokine Growth Factor Rev 2022; 65:61-74. [PMID: 35597701 DOI: 10.1016/j.cytogfr.2022.04.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/13/2022] [Accepted: 04/14/2022] [Indexed: 11/03/2022]
Abstract
The assertion that a significant portion of the mammalian genome has not been translated and that non-coding RNA accounts for over half of polyadenylate RNA have received much attention. In recent years, increasing evidence proposes non-coding RNAs (ncRNAs) as new regulators of various cellular processes, including cancer progression and nerve damage. Apoptosis is a type of programmed cell death critical for homeostasis and tissue development. Cancer cells often have inhibited apoptotic pathways. It has recently been demonstrated that up/down-regulation of various lncRNAs in certain types of tumors shapes cancer cells' response to apoptotic stimuli. This review discusses the most recent studies on lncRNAs and apoptosis in healthy and cancer cells. In addition, the role of lncRNAs as novel targets for cancer therapy is reviewed here. Finally, since it has been shown that lncRNA expression is associated with specific types of cancer, the potential for using lncRNAs as biomarkers is also discussed.
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Affiliation(s)
- Nasim Ebrahimi
- Genetics Division, Department of Cell and Molecular Biology and Microbiology, Faculty of Science and Technology, University of Isfahan, Iran
| | - Sahar Parkhideh
- Research Institute for Oncology, Hematology and Cell Therapy, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Setare Samizade
- Department of Cellular and molecular, School of Biological Sciences, Islamic Azad University of Falavarjan, Iran
| | - Alireza Nasr Esfahani
- Department of Cellular and molecular, School of Biological Sciences, Islamic Azad University of Falavarjan, Iran
| | - Sahar Samsami
- Biotechnology department of Fasa University of medical science, Fasa, Iran
| | - Elnaz Yazdani
- Department of Biology, Faculty of Science, University Of Isfahan, Isfahan, Iran; Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran
| | - Samaneh Adelian
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | | | - Kamal Shah-Amiri
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Amirhossein Ahmadi
- Department of Biological Science and Technology, Faculty of Nano and Bio Science and Technology, Persian Gulf University, Bushehr 75169, Iran.
| | - Amir Reza Aref
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA.
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4
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Shafabakhsh R, Arianfar F, Vosough M, Mirzaei HR, Mahjoubin-Tehran M, Khanbabaei H, Kowsari H, Shojaie L, Azar MEF, Hamblin MR, Mirzaei H. Autophagy and gastrointestinal cancers: the behind the scenes role of long non-coding RNAs in initiation, progression, and treatment resistance. Cancer Gene Ther 2021; 28:1229-1255. [PMID: 33432087 DOI: 10.1038/s41417-020-00272-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 10/06/2020] [Accepted: 11/23/2020] [Indexed: 02/07/2023]
Abstract
Gastrointestinal (GI) cancers comprise a heterogeneous group of complex disorders that affect different organs, including esophagus, stomach, gallbladder, liver, biliary tract, pancreas, small intestine, colon, rectum, and anus. Recently, an explosion in nucleic acid-based technologies has led to the discovery of long non-coding RNAs (lncRNAs) that have been found to possess unique regulatory functions. This class of RNAs is >200 nucleotides in length, and is characterized by their lack of protein coding. LncRNAs exert regulatory effects in GI cancer development by affecting different functions such as the proliferation and metastasis of cancer cells, apoptosis, glycolysis and angiogenesis. Over the past few decades, considerable evidence has revealed the important role of autophagy in both GI cancer progression and suppression. In addition, recent studies have confirmed a significant correlation between lncRNAs and the regulation of autophagy. In this review, we summarize how lncRNAs play a behind the scenes role in the pathogenesis of GI cancers through regulation of autophagy.
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Affiliation(s)
- Rana Shafabakhsh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Farzaneh Arianfar
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Massoud Vosough
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, 1665659911, Iran
| | - Hamid Reza Mirzaei
- Department of Medical Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Mahjoubin-Tehran
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medical Biotechnology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hashem Khanbabaei
- Medical Physics Department, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hamed Kowsari
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Layla Shojaie
- Research Center for Liver Diseases, Keck School of Medicine, Department of Medicine, University of Southern California, Los Angeles, CA, USA
| | | | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein, 2028, South Africa.
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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5
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Yan H, Chai H, Zhao H. Detecting lncRNA-Cancer Associations by Combining miRNAs, Genes, and Prognosis With Matrix Factorization. Front Genet 2021; 12:639872. [PMID: 34262591 PMCID: PMC8273282 DOI: 10.3389/fgene.2021.639872] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 04/15/2021] [Indexed: 11/13/2022] Open
Abstract
Motivation: Long non-coding RNAs (lncRNAs) play important roles in cancer development. Prediction of lncRNA–cancer association is necessary for efficiently discovering biomarkers and designing treatment for cancers. Currently, several methods have been developed to predict lncRNA–cancer associations. However, most of them do not consider the relationships between lncRNA with other molecules and with cancer prognosis, which has limited the accuracy of the prediction. Method: Here, we constructed relationship matrices between 1,679 lncRNAs, 2,759 miRNAs, and 16,410 genes and cancer prognosis on three types of cancers (breast, lung, and colorectal cancers) to predict lncRNA–cancer associations. The matrices were iteratively reconstructed by matrix factorization to optimize low-rank size. This method is called detecting lncRNA cancer association (DRACA). Results: Application of this method in the prediction of lncRNAs–breast cancer, lncRNA–lung cancer, and lncRNA–colorectal cancer associations achieved an area under curve (AUC) of 0.810, 0.796, and 0.795, respectively, by 10-fold cross-validations. The performances of DRACA in predicting associations between lncRNAs with three kinds of cancers were at least 6.6, 7.2, and 6.9% better than other methods, respectively. To our knowledge, this is the first method employing cancer prognosis in the prediction of lncRNA–cancer associations. When removing the relationships between cancer prognosis and genes, the AUCs were decreased 7.2, 0.6, and 5% for breast, lung, and colorectal cancers, respectively. Moreover, the predicted lncRNAs were found with greater numbers of somatic mutations than the lncRNAs not predicted as cancer-associated for three types of cancers. DRACA predicted many novel lncRNAs, whose expressions were found to be related to survival rates of patients. The method is available at https://github.com/Yanh35/DRACA.
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Affiliation(s)
- Huan Yan
- Department of Medical Research Center, Sun Yat-sen Memorial Hospital, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangzhou, China
| | - Hua Chai
- School of Data and Computer Science, Sun Yat-sen University, Guangzhou, China
| | - Huiying Zhao
- Department of Medical Research Center, Sun Yat-sen Memorial Hospital, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangzhou, China
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6
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Mastoraki A, Schizas D, Charalampakis N, Naar L, Ioannidi M, Tsilimigras D, Sotiropoulou M, Moris D, Vassiliu P, Felekouras E. Contribution of Histone Deacetylases in Prognosis and Therapeutic Management of Cholangiocarcinoma. Mol Diagn Ther 2021; 24:175-184. [PMID: 32125662 DOI: 10.1007/s40291-020-00454-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Cholangiocarcinoma (CCA), a malignant tumor that occurs in the epithelium of the biliary tract, has a very poor prognosis because affected patients are frequently diagnosed at an advanced stage and recurrence after resection is common. Over the last two decades, our understanding of the molecular biology of this malignancy has expanded, and various studies have explored targeted therapy for CCA in order to improve patient survival. The histone acetylation/deacetylation equilibrium is affected in carcinogenesis, leading to altered chromatin structure and therefore changes in gene expression. Understanding the molecular identity of histone deacetylases (HDACs), their cellular interactions and potential role as anticancer agents will help us develop new therapeutic strategies for CCA-affected patients. Furthermore, HDAC inhibitors act on cellular stress response pathways and decrease cancer angiogenesis. Downregulation of pro-angiogenic genes such as vascular endothelial growth factor (VEGF), hypoxia inducible factor-1 (HIF-1), and endothelial nitric oxide synthase (eNOS) inhibit formation of new vessels and can negatively affect the metastatic process. Finally, recent clinical trials prove that administration of both HDAC inhibitors and DNA-targeting chemotherapeutic agents, such as topoisomerase inhibitors, DNA intercalating agents, inhibitors of DNA synthesis, covalently modifying DNA agents, and ionizing radiation, maximizes the anticancer effect by increasing the cytotoxic efficiency of a variety of DNA-damaging anticancer drugs. Therefore, combination therapy of classic chemotherapeutic drugs with HDAC inhibitors can act synergistically for the patients' benefit.
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Affiliation(s)
- Aikaterini Mastoraki
- Fourth Department of Surgery, Attikon University Hospital, National and Kapodistrian University of Athens, 1 Rimini Str, 12462, Athens, Greece.
| | - Dimitrios Schizas
- First Department of Surgery, Laikon General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Leon Naar
- Fourth Department of Surgery, Attikon University Hospital, National and Kapodistrian University of Athens, 1 Rimini Str, 12462, Athens, Greece
| | - Maria Ioannidi
- Fourth Department of Surgery, Attikon University Hospital, National and Kapodistrian University of Athens, 1 Rimini Str, 12462, Athens, Greece
| | - Diamantis Tsilimigras
- Division of Surgical Oncology, Department of Surgery, James Cancer Hospital, Solove Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | | | - Dimitrios Moris
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | - Pantelis Vassiliu
- Fourth Department of Surgery, Attikon University Hospital, National and Kapodistrian University of Athens, 1 Rimini Str, 12462, Athens, Greece
| | - Evangelos Felekouras
- First Department of Surgery, Laikon General Hospital, National and Kapodistrian University of Athens, Athens, Greece
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7
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The Long Noncoding RNA LOXL1-AS1 Promotes the Proliferation, Migration, and Invasion in Hepatocellular Carcinoma. ACTA ACUST UNITED AC 2020; 2020:4182092. [PMID: 33381389 PMCID: PMC7759407 DOI: 10.1155/2020/4182092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 11/07/2020] [Accepted: 12/05/2020] [Indexed: 12/27/2022]
Abstract
Objective To investigate the expression of long noncoding RNA lysyl oxidase-like 1-antisense 1 (LOXL1-AS1) in hepatocellular carcinoma tissues and its effect on cell proliferation, migration, and invasion. Methods Quantitative real-time PCR was used to analyze the expression of LOXL1-AS1 RNA in tumor tissues, adjacent normal tissues, and cell lines. MTT assay, colony formation assay, flow cytometry analysis, transwell assays, and lentivirus-mediated RNA interference (RNAi) technology were used to evaluate cell proliferation and migration. Results In the present study, we observed that the expression level of LOXL1-AS1 in hepatocellular carcinoma tissue was significantly higher than that in adjacent nontumor tissues, and its expression in three hepatic carcinoma cell lines was obviously higher than that in a normal cell line. In addition, in the Hep-G2 cell line, LOXL1-AS1 downregulation significantly inhibited cell proliferation in the light of the MTT and colony formation assays in vitro, which was consistent with animal experiment in vivo. What is more, cell migration was also inhibited in vitro in Matrigel Transwell Assay by LOXL1-AS1 knockdown, which might be partly attributed to the reduction of MMP-2 and MMP-9 protein expressions. Finally, cell cycle analysis revealed that knockdown of LOXL1-AS1 induced significantly a G0/G1 phase cell cycle arrest, which might be partly attributed to the downregulation of Cdc2, Cdc25A, and cyclin B1 protein expression. Conclusion In conclusion, we demonstrated that reduced LOXL1-AS1 expression could inhibit hepatocellular carcinoma cell proliferation, migration, and invasion. The application of RNAi targeting LOXL1-AS1 might be a potential treatment strategy in advanced cases.
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8
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Zhang L, Deng S, Zhang Y, Peng Q, Li H, Wang P, Fu X, Lei X, Qin A, Yu X. Homotypic Targeting Delivery of siRNA with Artificial Cancer Cells. Adv Healthc Mater 2020; 9:e1900772. [PMID: 32181988 DOI: 10.1002/adhm.201900772] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 01/27/2020] [Accepted: 02/25/2020] [Indexed: 01/10/2023]
Abstract
The camouflage with cell membrane bestows nanoparticles with cell-like functions, such as specific recognition, long blood circulation, and immune escaping. For cancer therapy, the nanoparticles camouflaged with cancer cell membrane (CCM) from homologous cells show homotypic targeting delivery of small molecule compounds, photosensitizers, or enzymes to the tumors. However, effective gene therapy encounters difficulties by this approach due to the properties of nucleic acids. Herein, a cancer cell-like gene delivery system is developed using an excellent polymer poly(β-amino ester) (PBAE) to condense small interfering RNA (siRNA) (targeting to Plk1 gene) into nanoparticles (PBAE/siPlk1) as the core, which is further camouflaged with CCM. These novel biomimetic nanoparticles CCM/PBAE/siPlk1 (CCMPP) demonstrate highly specific targeting to homotypic cancer cells, effective downregulation of PLK1 level, and inducing apoptosis of cancer cells. Based on the homotypic binding adhesion molecules on the CCM, the cellular internalization and homotypic-targeting accumulation to the tumors are clearly improved. CCMPP induces highly efficient apoptosis of cancer cells both in vitro and in vivo and results in significant tumor inhibition. The artificial cancer cells with homotypic properties can serve as a biomimetic delivery system for cancer-targeted gene therapy.
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Affiliation(s)
- Lingmin Zhang
- Key Laboratory of Molecular Target and Clinical Pharmacology and the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences and the Fifth Affiliated HospitalGuangzhou Medical University Guangzhou Guangdong 511436 China
| | - Sai Deng
- Key Laboratory of Molecular Target and Clinical Pharmacology and the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences and the Fifth Affiliated HospitalGuangzhou Medical University Guangzhou Guangdong 511436 China
| | - Yanfen Zhang
- Key Laboratory of Molecular Target and Clinical Pharmacology and the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences and the Fifth Affiliated HospitalGuangzhou Medical University Guangzhou Guangdong 511436 China
| | - Qingsheng Peng
- Key Laboratory of Molecular Target and Clinical Pharmacology and the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences and the Fifth Affiliated HospitalGuangzhou Medical University Guangzhou Guangdong 511436 China
| | - Huan Li
- Key Laboratory of Molecular Target and Clinical Pharmacology and the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences and the Fifth Affiliated HospitalGuangzhou Medical University Guangzhou Guangdong 511436 China
| | - Ping Wang
- Key Laboratory of Molecular Target and Clinical Pharmacology and the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences and the Fifth Affiliated HospitalGuangzhou Medical University Guangzhou Guangdong 511436 China
| | - Xiaomei Fu
- Key Laboratory of Molecular Target and Clinical Pharmacology and the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences and the Fifth Affiliated HospitalGuangzhou Medical University Guangzhou Guangdong 511436 China
| | - Xueping Lei
- Key Laboratory of Molecular Target and Clinical Pharmacology and the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences and the Fifth Affiliated HospitalGuangzhou Medical University Guangzhou Guangdong 511436 China
| | - Aiping Qin
- Key Laboratory of Molecular Target and Clinical Pharmacology and the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences and the Fifth Affiliated HospitalGuangzhou Medical University Guangzhou Guangdong 511436 China
| | - Xiyong Yu
- Key Laboratory of Molecular Target and Clinical Pharmacology and the State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences and the Fifth Affiliated HospitalGuangzhou Medical University Guangzhou Guangdong 511436 China
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9
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Knockdown of LINC00467 contributed to Axitinib sensitivity in hepatocellular carcinoma through miR-509-3p/PDGFRA axis. Gene Ther 2020; 28:634-645. [DOI: 10.1038/s41434-020-0137-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 02/15/2020] [Accepted: 02/20/2020] [Indexed: 12/18/2022]
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10
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Wang X, Mao J, Zhou X, Li Q, Gao L, Zhao J. Thyroid Stimulating Hormone Triggers Hepatic Mitochondrial Stress through Cyclophilin D Acetylation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:1249630. [PMID: 31998431 PMCID: PMC6970002 DOI: 10.1155/2020/1249630] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 09/01/2019] [Accepted: 09/14/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS Oxidative stress-related liver diseases were shown to be associated with elevated serum thyroid stimulating hormone (TSH) levels. Mitochondria are the main source of cellular reactive oxygen species. However, the relationship between TSH and hepatic mitochondrial stress/dysfunction and the underlying mechanisms are largely unknown. Here, we focused on exploring the effects and mechanism of TSH on hepatic mitochondrial stress. METHODS As the function of TSH is mediated through the TSH receptor (TSHR), Tshr -/- mice and liver-specific Tshr -/- mice and liver-specific Tshr -/- mice and liver-specific. RESULTS A relatively lower degree of mitochondrial stress was observed in the livers of Tshr -/- mice and liver-specific in vitro. Microarray and RT-PCR analyses showed that Tshr -/- mice and liver-specific. CONCLUSIONS TSH stimulates hepatic CypD acetylation through the lncRNA-AK044604/SIRT1/SIRT3 signaling pathway, indicating an essential role for TSH in mitochondrial stress in the liver.
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Affiliation(s)
- Xiaolei Wang
- Shandong Institute of Endocrine & Metabolic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250014, China
| | - Jinbao Mao
- Department of Anesthesiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Xinli Zhou
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Qiu Li
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Ling Gao
- Scientific Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
- Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan 250021, China
| | - Jiajun Zhao
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
- Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan 250021, China
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11
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Current Research Progress on Long Noncoding RNAs Associated with Hepatocellular Carcinoma. Anal Cell Pathol (Amst) 2019; 2019:1534607. [PMID: 31341758 PMCID: PMC6612982 DOI: 10.1155/2019/1534607] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 02/20/2019] [Accepted: 03/10/2019] [Indexed: 02/08/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the second leading cause of mortality among cancers. It has been found that long noncoding RNAs (lncRNAs) are involved in many human cancers, including liver cancer. It has been identified that carcinogenic and tumor-suppressing lncRNAs are associated with complex processes in liver cancer. These lncRNAs may participate in a variety of pathological and biological activities, such as cell proliferation, apoptosis, invasion, and metastasis. Here, we review the regulation and function of lncRNA in liver cancer and evaluate the potential of lncRNA as a new goal for liver cancer.
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12
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Shi Y, Yang X, Xue X, Sun D, Cai P, Song Q, Zhang B, Qin L. HANR promotes lymphangiogenesis of hepatocellular carcinoma via secreting miR-296 exosome and regulating EAG1/VEGFA signaling in HDLEC cells. J Cell Biochem 2019; 120:17699-17708. [PMID: 31127654 DOI: 10.1002/jcb.29036] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 04/28/2019] [Accepted: 04/30/2019] [Indexed: 01/03/2023]
Abstract
The long noncoding RNA HANR has been shown to be involved in the progression of hepatocellular carcinoma (HCC). However, the underlying mechanism of HCC-associated long noncoding RNA (HANR)-regulated HCC metastasis and lymphangiogenesis has not been elucidated. RT-qPCR and Western blot methods were utilized to detect the gene expressions. Interaction of HANR with miR-296 was predicted by a bioinformatic program and validated by a dual-luciferase reporter assay. For the functional experiment, a transwell invasion assay was utilized to examine the invasion abilities of HepG2 and Huh-7 cells. The lymphatic vessel formation assay was used to show the HCC-associated lymphatic vessel formation ability of human dermal lymphatic endothelial cells (HDLEC). HANR was shown to directly bind to miR-296, and miR-296 downregulated HANR expression in HepG2 cells. Then, we observed that miR-296 inhibitor transfection in shHANR HCC cells could promote lymphatic vessel formation and invasion of HDLEC cells compared with shHANR HCC cells. EAG1 or VEGFA overexpression in HDLEC cells rescued lymphatic vessel formation and invasion in HDLEC cells coincubated with the medium of HepG2 cells expressing shHANR or miR-296 mimic. Ultimately, HANR knockdown and miR-296 mimic led to a significant decrease in the EAG1 and VEGFA expression levels in HepG2 cells. Here, we reveal a novel molecular mechanism in which the HANR/miR-296/EAG1/VEGF axis is responsible for the lymphangiogenesis of HCC cells. Our findings provide more insights into developing therapeutical or diagnostic methods by targeting HANR.
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Affiliation(s)
- Yang Shi
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, P.R. China
| | - Xiaohua Yang
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, P.R. China
| | - Xiaofeng Xue
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, P.R. China
| | - Ding Sun
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, P.R. China
| | - Peng Cai
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, P.R. China
| | - Qingwei Song
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, P.R. China
| | - Bin Zhang
- Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, P.R. China
| | - Lei Qin
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, P.R. China
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13
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LncRNAs with miRNAs in regulation of gastric, liver, and colorectal cancers: updates in recent years. Appl Microbiol Biotechnol 2019; 103:4649-4677. [PMID: 31062053 DOI: 10.1007/s00253-019-09837-5] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 04/07/2019] [Accepted: 04/08/2019] [Indexed: 12/15/2022]
Abstract
Long noncoding RNA (lncRNA) is a kind of RNAi molecule composed of hundreds to thousands of nucleotides. There are several major types of functional lncRNAs which participate in some important cellular pathways. LncRNA-RNA interaction controls mRNA translation and degradation or serves as a microRNA (miRNA) sponge for silencing. LncRNA-protein interaction regulates protein activity in transcriptional activation and silencing. LncRNA guide, decoy, and scaffold regulate transcription regulators of enhancer or repressor region of the coding genes for alteration of expression. LncRNA plays a role in cellular responses including the following activities: regulation of chromatin structural modification and gene expression for epigenetic and cell function control, promotion of hematopoiesis and maturation of immunity, cell programming in stem cell and somatic cell development, modulation of pathogen infection, switching glycolysis and lipid metabolism, and initiation of autoimmune diseases. LncRNA, together with miRNA, are considered the critical elements in cancer development. It has been demonstrated that tumorigenesis could be driven by homeostatic imbalance of lncRNA/miRNA/cancer regulatory factors resulting in biochemical and physiological alterations inside the cells. Cancer-driven lncRNAs with other cellular RNAs, epigenetic modulators, or protein effectors may change gene expression level and affect the viability, immortality, and motility of the cells that facilitate cancer cell cycle rearrangement, angiogenesis, proliferation, and metastasis. Molecular medicine will be the future trend for development. LncRNA/miRNA could be one of the potential candidates in this category. Continuous studies in lncRNA functional discrepancy between cancer cells and normal cells and regional and rational genetic differences of lncRNA profiles are critical for clinical research which is beneficial for clinical practice.
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14
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Epigenetic Targeting of Autophagy via HDAC Inhibition in Tumor Cells: Role of p53. Int J Mol Sci 2018; 19:ijms19123952. [PMID: 30544838 PMCID: PMC6321134 DOI: 10.3390/ijms19123952] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/05/2018] [Accepted: 12/06/2018] [Indexed: 12/19/2022] Open
Abstract
Tumor development and progression is the consequence of genetic as well as epigenetic alterations of the cell. As part of the epigenetic regulatory system, histone acetyltransferases (HATs) and deacetylases (HDACs) drive the modification of histone as well as non-histone proteins. Derailed acetylation-mediated gene expression in cancer due to a delicate imbalance in HDAC expression can be reversed by histone deacetylase inhibitors (HDACi). Histone deacetylase inhibitors have far-reaching anticancer activities that include the induction of cell cycle arrest, the inhibition of angiogenesis, immunomodulatory responses, the inhibition of stress responses, increased generation of oxidative stress, activation of apoptosis, autophagy eliciting cell death, and even the regulation of non-coding RNA expression in malignant tumor cells. However, it remains an ongoing issue how tumor cells determine to respond to HDACi treatment by preferentially undergoing apoptosis or autophagy. In this review, we summarize HDACi-mediated mechanisms of action, particularly with respect to the induction of cell death. There is a keen interest in assessing suitable molecular factors allowing a prognosis of HDACi-mediated treatment. Addressing the results of our recent study, we highlight the role of p53 as a molecular switch driving HDACi-mediated cellular responses towards one of both types of cell death. These findings underline the importance to determine the mutational status of p53 for an effective outcome in HDACi-mediated tumor therapy.
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15
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Wang Y, Jing W, Ma W, Liang C, Chai H, Tu J. Down-regulation of long non-coding RNA GAS5-AS1 and its prognostic and diagnostic significance in hepatocellular carcinoma. Cancer Biomark 2018; 22:227-236. [PMID: 29660898 DOI: 10.3233/cbm-170781] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is the most common solid tumor in global range, with high degree of malignancy and poor prognosis. But the relationship between the expression of GAS5-AS1 and HCC is not documented. This study aimed to profile GAS5-AS1 expression signature and then to explore its clinical significance in HCC. METHODS Quantitative real-time PCR (RT-qPCR) was performed to detect the expression of GAS5-AS1 in 83 pairs of HCC surgical tissues and adjacent normal liver tissues. We also performed RT-qPCR on plasma samples of 156 patients and 58 healthy controls. RESULTS We found that GAS5-AS1 was down-regulated in HCC tissues (P< 0.01). Correlation analysis showed that the expression of GAS5-AS1 was notably associated with differentiation (High/Moderate vs Low, P= 0.031), tumor-node-metastasis (TNM) stage (I∼II vs III∼IV, P= 0.020) and glucose levels (< 6.2 vs≧ 6.2, P= 0.047) in HCC patients. The overall survival analysis showed that patients with lower GAS5-AS1 expression had a relatively poor prognosis. Univariate and multivariate analysis elaborated that GAS5-AS1 was an independent prognostic factor for HCC patients. The area under the ROC (AUCROC) demonstrated that GAS5-AS1 presented a high accuracy (AUC = 0.824, 95% CI: 0.741-0.906) for distinguishing HCC from the cirrhosis. When differentiating HCC cases with AFP < 200 ng/ml from the cirrhosis and hepatitis B whose AFP levels were also below 200 ng/ml, GAS5-AS1 had the high sensitivity (89.5%, 89.5%, respectively). CONCLUSIONS GAS5-AS1 could be considered as a potential prognostic and diagnostic marker in HCC. However, the potential clinical application value of GAS5-AS1 still needs to be further illustrated.
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Affiliation(s)
- Yingchao Wang
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China.,Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China
| | - Wei Jing
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Key laboratory of Laboratory Medicine of Henan, Zhengzhou 450000, China.,Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China
| | - Weijie Ma
- Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China
| | - Chunzi Liang
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China
| | - Hongyan Chai
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China
| | - Jiancheng Tu
- Department of Clinical Laboratory Medicine and Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China
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16
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Yang Z, Li H, Wang Z, Yang Y, Niu J, Liu Y, Sun Z, Yin C. Microarray expression profile of long non-coding RNAs in human lung adenocarcinoma. Thorac Cancer 2018; 9:1312-1322. [PMID: 30151992 PMCID: PMC6166069 DOI: 10.1111/1759-7714.12845] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 07/22/2018] [Accepted: 07/23/2018] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) participate in many biological dynamics and play significant roles in gene regulation. LncRNA expression is altered in many cancers; however, the expressions and functions of lncRNA genes in lung adenocarcinoma (LAD) remain unknown. METHODS LncRNA and messenger RNA (mRNA) expression in LAD without lymphatic metastasis versus paired adjacent non-tumor (ANT) lung tissues and LAD with versus without lymphatic metastasis were analyzed using Human LncRNA Arraystar V3.0. The expression levels of four downregulated and four upregulated lncRNAs were verified using quantitative real-time PCR in cells and tissue specimens. RESULTS In this study, 949 lncRNAs and 681 mRNAs had differential expression in LAD without lymphatic metastasis compared to ANT lung tissues, while 2740 lncRNAs and 1714 mRNAs were differentially expressed in LAD with lymphatic metastasis compared to LAD without lymphatic metastasis. The expression patterns of selected lncRNAs (LINC00113, AC005009.1, ARHGAP22-IT1, AC009411.1, SRGAP3-AS2, EGFEM1P, FAM66E, and HLA-F-AS1) were consistent with microarray data. Differentially expressed mRNA genes were enriched in crucial Gene Ontology terms and pathways. CONCLUSION Our results revealed differentially expressed lncRNAs in LAD, suggesting lncRNAs may be potential indicators for LAD diagnosis and therapy.
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Affiliation(s)
- Zhiyi Yang
- Department of PathologyWeifang Medical UniversityWeifangChina
| | - Hongli Li
- Medicine Research Center, Weifang Medical UniversityWeifangChina
| | - Zhaoyan Wang
- Department of PathologyWeifang Medical UniversityWeifangChina
| | - Yuling Yang
- Department of PathologyWeifang Medical UniversityWeifangChina
| | - Jie Niu
- College of NursingWeifang Medical UniversityWeifangChina
| | - Yuanyuan Liu
- College of NursingWeifang Medical UniversityWeifangChina
| | - Zhiliang Sun
- College of Biological Science and TechnologyWeifang Medical UniversityWeifangChina
| | - Chonggao Yin
- College of NursingWeifang Medical UniversityWeifangChina
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17
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Chen X, Xu Y, Zhao D, Chen T, Gu C, Yu G, Chen K, Zhong Y, He J, Liu S, Nie Y, Yang H. LncRNA-AK012226 Is Involved in Fat Accumulation in db/db Mice Fatty Liver and Non-alcoholic Fatty Liver Disease Cell Model. Front Pharmacol 2018; 9:888. [PMID: 30135656 PMCID: PMC6092710 DOI: 10.3389/fphar.2018.00888] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 07/20/2018] [Indexed: 12/19/2022] Open
Abstract
Instances of obesity and related metabolic abnormalities are increasing across the world. Non-alcoholic fatty liver disease (NAFLD) is a common disorder in obese people and is becoming the leading cause of hepatocellular carcinoma. Recently, long non-coding RNAs (lncRNAs) have been proven to play remarkable roles in numerous biological processes and human diseases, including NAFLD. However, the function of lncRNA in NAFLD pathogenesis remains largely unknown. The aim of this study was to explore the lncRNA expression profile in NAFLD mice and to identify novel lncRNAs involved in the pathogenesis of NAFLD. We performed microarray analysis to compare the expression profiles of lncRNAs and mRNAs in the liver of diabetic db/db mice with NAFLD and normal mice. A total of 3360 lncRNAs (2048 up-regulated and 1312 down-regulated) and 2685 mRNAs (1195 up-regulated and 1490 down-regulated) were found to be differentially expressed between the NAFLD and control groups. Real-time PCR validation of five differentially expressed lncRNAs in the liver samples was consistent with the microarray results. Besides, the up-regulated lncRNA, AK012226, was also significantly increased in an NCTC1469 NAFLD cellular model. Thus, the up-regulated lncRNA, AK012226, was chosen for subsequent studies. A co-expression network of AK012226-mRNAs was constructed and bioinformatic analysis of these co-expressed mRNAs indicated that they were enriched in the PPAR signaling pathway. Furthermore, Nile red staining and flow cytometry analysis revealed that knockdown of AK012226 by siRNA significantly reduced the lipid accumulation in the NCTC1469 cells treated with free fatty acids. In conclusion, the present study identifies the dysregulated lncRNAs and mRNAs involved in NAFLD, and in particular, a novel lncRNA, AK012226, was identified to be associated with lipid accumulation in NAFLD.
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Affiliation(s)
- Xingtian Chen
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Cadre Health Care, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yangzhi Xu
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Dan Zhao
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ting Chen
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Chengxin Gu
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ganxiang Yu
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ken Chen
- Department of Cadre Health Care, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yun Zhong
- Guangzhou Institute of Cardiovascular Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jie He
- Department of Gastroenterology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Shiming Liu
- Guangzhou Institute of Cardiovascular Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yuqiang Nie
- Department of Gastroenterology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Hui Yang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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18
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Liu X, Wang Y, Sun L, Min J, Liu J, Chen D, Zhang H, Zhang H, Zhang H, Zhou Y, Liu L. Long noncoding RNA BC005927 upregulates EPHB4 and promotes gastric cancer metastasis under hypoxia. Cancer Sci 2018; 109:988-1000. [PMID: 29383777 PMCID: PMC5891181 DOI: 10.1111/cas.13519] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 01/10/2018] [Accepted: 01/22/2018] [Indexed: 01/03/2023] Open
Abstract
Hypoxia plays a critical role in the metastasis of gastric cancer (GC), yet the underlying mechanism remains largely unclear. It is also not known whether long, noncoding RNAs (lncRNAs) are involved in the contribution of hypoxia to GC metastasis. In the present study, we found that lncRNA BC005927 can be induced by hypoxia in GC cells and mediates hypoxia-induced GC cell metastasis. Furthermore, BC005927 is frequently upregulated in GC samples and increased BC005927 expression was correlated with a higher tumor-node-metastasis stage. GC patients with higher BC005927 expression had poorer prognoses than those with lower expression. Additional experiments showed that BC005927 expression is induced by hypoxia inducible factor-1 alpha (HIF-1α); ChIP assay and luciferase reporter assays confirmed that this lncRNA is a direct transcriptional target of HIF-1α. Next, we found that EPHB4, a metastasis-related gene, is regulated by BC005927 and that the expression of EPHB4 was positively correlated with that of BC005927 in the clinical GC samples assessed. Intriguingly, EPHB4 expression was also increased under hypoxia, and its upregulation by BC005927 resulted in hypoxia-induced GC cell metastasis. These results advance the current understanding of the role of BC005927 in the regulation of hypoxia signaling and offer new avenues for the development of therapeutic interventions against cancer progression.
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Affiliation(s)
- Xiangqiang Liu
- Department of Oncology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.,Department of Gastroenterology, Guangzhou General Hospital of the Guangzhou Military Command of the PLA, Guangzhou, China
| | - Yafang Wang
- Department of Oncology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Li Sun
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Jie Min
- Department of Oncology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Jiaming Liu
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Di Chen
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Hongbo Zhang
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Hongwei Zhang
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
| | - Helong Zhang
- Department of Oncology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yongan Zhou
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Lili Liu
- Department of Oncology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
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19
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Sun P, Zhou X, He Y, Liu H, Wang Y, Chen Y, Li M, He Y, Li G, Li Y. Effect of trichostatin A on Burkitt's lymphoma cells: Inhibition of EPS8 activity through Phospho-Erk1/2 pathway. Biochem Biophys Res Commun 2018; 497:990-996. [PMID: 29462617 DOI: 10.1016/j.bbrc.2018.02.128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 02/14/2018] [Indexed: 01/24/2023]
Abstract
Histone deacetylase inhibitors (HDACi) manifest great potential for treatment of Burkitt's lymphoma (BL), an aggressive B-cell lymphoma. Epidermal growth factor receptor pathway substrate 8 (EPS8) is confirmed overexpressed and associated with poor prognosis in solid tumors and leukemia. However, EPS8 expression and the relationship between EPS8 and HDACi on BL remains obscure. Here, we hypothesized that trichostatin A (TSA), a pan-HDACi, could inhibit BL cells by downregulating EPS8. We demonstrated that TSA reduced cell viability, induced apoptosis and cell arrest at G0/G1. Mechanismly, TSA attenuated EPS8 and downstream Phospho-Erk1/2 pathway. Knockdown of EPS8 resulted in a significant reduction in cellular proliferation and suppressed Phospho-Erk1/2 pathway activity, particularly when combined with TSA. Conversely, overexpression of EPS8 rescued this phenomenon. Then we showed that the combination of TSA and Epirubicin had a more significant effect when compared with TSA or Epirubicin alone. Finally, knockdown of EPS8 and TSA had a synergistic suppression effect on BALB/c nude mice. In conclusion, this study reveals that TSA affects BL cells by suppressing Phospho-Erk1/2 pathway through downregulating EPS8.
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Affiliation(s)
- Peipei Sun
- Department of Hematology, Zhujiang Hospital, Southern Medical University, 510282, Guangzhou, China.
| | - Xin Zhou
- Department of Hematology, Zhujiang Hospital, Southern Medical University, 510282, Guangzhou, China.
| | - Yingzhi He
- Department of Hematology, Zhujiang Hospital, Southern Medical University, 510282, Guangzhou, China.
| | - Huimin Liu
- Department of Hematology, Zhujiang Hospital, Southern Medical University, 510282, Guangzhou, China.
| | - Yuxin Wang
- Department of Hematology, Zhujiang Hospital, Southern Medical University, 510282, Guangzhou, China.
| | - Yiran Chen
- Department of Hematology, Zhujiang Hospital, Southern Medical University, 510282, Guangzhou, China.
| | - Meifang Li
- Department of Hematology, Zhujiang Hospital, Southern Medical University, 510282, Guangzhou, China.
| | - Yanjie He
- Department of Hematology, Zhujiang Hospital, Southern Medical University, 510282, Guangzhou, China.
| | - Guowei Li
- Department of Hematology, Huizhou Municipal Central Hospital, 41 Eling Road North, 516001, Huizhou, China.
| | - Yuhua Li
- Department of Hematology, Zhujiang Hospital, Southern Medical University, 510282, Guangzhou, China.
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20
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Qiu L, Tang Q, Li G, Chen K. Long non-coding RNAs as biomarkers and therapeutic targets: Recent insights into hepatocellular carcinoma. Life Sci 2017; 191:273-282. [PMID: 28987633 DOI: 10.1016/j.lfs.2017.10.007] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/19/2017] [Accepted: 10/03/2017] [Indexed: 12/19/2022]
Abstract
Hepatocellular carcinoma (HCC) is the most prevalent primary liver cancer worldwide, and the survival rates of patients with HCC remains quite low after 5years. Long non-coding RNAs (LncRNAs) are a novel class of non-coding RNAs that are capable of regulating gene expression at various levels. Recent works have demonstrated that lncRNAs are often dysregulated in HCC, and the dysregulation of some of these lncRNAs are associated with the clinicopathological features of HCC. They regulate cell proliferation, apoptosis, autophagy, Epithelial-Mesenchymal Transition (EMT), invasion and metastasis of HCC by modulating gene expression and cancer-related signaling pathways, and thus contribute to the onset and progression of HCC. In this review, we provide a comprehensive survey of dysregulated lncRNAs in HCC, with particular focus on the functions and regulatory mechanisms of several essential and important lncRNAs, and discuss their potential clinical application as early diagnostic and/or prognostic biomarkers or therapeutic targets for HCC.
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Affiliation(s)
- Lipeng Qiu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China
| | - Qi Tang
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China
| | - Guohui Li
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China
| | - Keping Chen
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China.
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21
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Chen T, Gu C, Xue C, Yang T, Zhong Y, Liu S, Nie Y, Yang H. LncRNA-uc002mbe.2 Interacting with hnRNPA2B1 Mediates AKT Deactivation and p21 Up-Regulation Induced by Trichostatin in Liver Cancer Cells. Front Pharmacol 2017; 8:669. [PMID: 28993733 PMCID: PMC5622184 DOI: 10.3389/fphar.2017.00669] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 09/07/2017] [Indexed: 01/08/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) have been implicated in liver carcinogenesis. We previously showed that the induction of lncRNA-uc002mbe.2 is positively associated with the apoptotic effect of trichostatin A (TSA) in hepatocellular carcinoma (HCC) cells. The current study further analyzed the role of uc002mbe.2 in TSA-induced liver cancer cell death. The level of uc002mbe.2 was markedly increased by TSA in the cytoplasm of HCC cells. Knockdown of uc002mbe.2 prohibited TSA-induced G2/M cell cycle arrest, p21 induction, and apoptosis of Huh7 cells and reversed the TSA-mediated decrease in p-AKT. RNA pull-down and RNA-binding protein immunoprecipitation (RIP) assays revealed that TSA induced an interaction between uc002mbe.2 and heterogeneous nuclear ribonucleoprotein A2B1 (hnRNPA2B1) in Huh7 cells. This interaction mediated AKT deactivation and p21 induction in liver cancer cells. In an athymic xenograft mouse model, knockdown of uc002mbe.2 significantly prohibited the TSA-mediated reduction in tumor size and weight. In addition, the ability of TSA to reduce hnRNPA2B1 and p-AKT levels and induce p21 in the xenograft tumors was prevented by uc002mbe.2 knockdown. Therefore, the interaction of uc002mbe.2 and hnRNPA2B1 in mediating AKT deactivation and p21 induction is involved in the cytostatic effect of trichostatin in liver cancer cells.
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Affiliation(s)
- Ting Chen
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou, China
| | - Chengxin Gu
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou, China
| | - Cailin Xue
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou, China.,Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou, China
| | - Tao Yang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou, China
| | - Yun Zhong
- Guangzhou Institute of Cardiovascular DiseaseGuangzhou, China
| | - Shiming Liu
- Guangzhou Institute of Cardiovascular DiseaseGuangzhou, China
| | - Yuqiang Nie
- Department of Gastroenterology, Guangzhou First People's Hospital of Guangzhou Medical UniversityGuangzhou, China
| | - Hui Yang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou, China
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22
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Histone Deacetylase Inhibitors as Anticancer Drugs. Int J Mol Sci 2017; 18:ijms18071414. [PMID: 28671573 PMCID: PMC5535906 DOI: 10.3390/ijms18071414] [Citation(s) in RCA: 791] [Impact Index Per Article: 113.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 06/11/2017] [Accepted: 06/27/2017] [Indexed: 12/11/2022] Open
Abstract
Carcinogenesis cannot be explained only by genetic alterations, but also involves epigenetic processes. Modification of histones by acetylation plays a key role in epigenetic regulation of gene expression and is controlled by the balance between histone deacetylases (HDAC) and histone acetyltransferases (HAT). HDAC inhibitors induce cancer cell cycle arrest, differentiation and cell death, reduce angiogenesis and modulate immune response. Mechanisms of anticancer effects of HDAC inhibitors are not uniform; they may be different and depend on the cancer type, HDAC inhibitors, doses, etc. HDAC inhibitors seem to be promising anti-cancer drugs particularly in the combination with other anti-cancer drugs and/or radiotherapy. HDAC inhibitors vorinostat, romidepsin and belinostat have been approved for some T-cell lymphoma and panobinostat for multiple myeloma. Other HDAC inhibitors are in clinical trials for the treatment of hematological and solid malignancies. The results of such studies are promising but further larger studies are needed. Because of the reversibility of epigenetic changes during cancer development, the potency of epigenetic therapies seems to be of great importance. Here, we summarize the data on different classes of HDAC inhibitors, mechanisms of their actions and discuss novel results of preclinical and clinical studies, including the combination with other therapeutic modalities.
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23
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Ge Z, Cheng Z, Yang X, Huo X, Wang N, Wang H, Wang C, Gu D, Zhao F, Yao M, Fan J, Qin W. Long noncoding RNA SchLAH suppresses metastasis of hepatocellular carcinoma through interacting with fused in sarcoma. Cancer Sci 2017; 108:653-662. [PMID: 28196303 PMCID: PMC5406589 DOI: 10.1111/cas.13200] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 01/26/2017] [Accepted: 02/04/2017] [Indexed: 12/13/2022] Open
Abstract
Emerging evidence has indicated that deregulation of long non‐coding RNAs (lncRNAs) can contribute to the progression and metastasis of human cancer, including hepatocellular carcinoma (HCC). However, the roles of most lncRNAs in HCC remain largely unknown. Here we found a long noncoding RNA termed SchLAH (seven chromosome locus associated with HCC; also called BC035072) was generally downregulated in HCC. Low expression of SchLAH was significantly correlated with shorter overall survival of HCC patients. In vitro and in vivo assays indicated that overexpression of SchLAH inhibited the migration and lung metastasis of HCC cells. Knockdown of SchLAH by siRNA pool promoted the migration of HCC cells. RNA pull‐down and RNA immunoprecipitation assays demonstrated SchLAH physically interacted with fused in sarcoma (FUS). PCR array analysis showed that RhoA and Rac1 were the downstream effector molecules of SchLAH during HCC metastasis. Knockdown of FUS rescued the mRNA levels of RhoA and Rac1 that were repressed by SchLAH. These results suggest that SchLAH may suppress the metastasis of HCC cells by interacting with FUS, which indicates potential of SchLAH for the prognosis and treatment of HCC.
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Affiliation(s)
- Zhouhong Ge
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhuoan Cheng
- Shanghai Jiao Tong University School of Biomedical Engineering, Shanghai, China
| | - Xinrong Yang
- Department of Liver Surgery, Liver Cancer Institute, Zhongshan Hospital and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai, China
| | - Xisong Huo
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ning Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hui Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Cun Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dishui Gu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Pathophysiology, Guangdong Medical College, Dongguan, Guangdong, China
| | - Fangyu Zhao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ming Yao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jia Fan
- Department of Liver Surgery, Liver Cancer Institute, Zhongshan Hospital and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai, China
| | - Wenxin Qin
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Li C, Tao Y, Li C, Liu B, Liu J, Wang G, Liu H. PU.1-Bim axis is involved in Trichostatin A-induced apoptosis in murine pro-B lymphoma FL5.12 cells. Acta Biochim Biophys Sin (Shanghai) 2016; 48:850-5. [PMID: 27451443 DOI: 10.1093/abbs/gmw067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 04/29/2016] [Indexed: 11/13/2022] Open
Abstract
Trichostatin A (TSA) is a well-known histone deacetylases (HDACs) inhibitor that has been reported to show potent anti-tumor capabilities in some types of cancer cell lines. However, detailed mechanism of TSA action on lymphoma remains to be described. In the present study, anti-proliferative effects of TSA were investigated using a murine pro-B lymphoma cell line FL5.12. MTT assay revealed that TSA potently inhibited the proliferation of FL5.12 cells in a time- and dose-dependent manner. Bright-field microscopy of FL5.12 cells showed apoptotic morphology at 24 h after TSA treatment. Consistently, TSA treatment led to DNA fragmentation and increased the protein levels of cleaved caspase 3 and PARP as revealed by western blot analysis. To explore the underlying mechanism of TSA-induced apoptosis of FL5.12 cells, we further analyzed the hematopoietic transcription factor Purine Rich Box-1 (PU.1) by western blot analysis. TSA treatment resulted in the inhibition of PU.1 in FL5.12 cells. In contrast, apoptotic protein Bim was induced by TSA, which was inversely correlated with the survival of FL5.12 cells. These results suggest the possible mechanism of TSA-induced apoptosis in murine pro-B lymphoma FL5.12 cells via the PU.1-Bim axis.
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Affiliation(s)
- Chao Li
- Infection and Immunity Laboratory, Kunming National High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Science & Peking Union Medical College, Kunming 650118, China
| | - Yufen Tao
- Infection and Immunity Laboratory, Kunming National High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Science & Peking Union Medical College, Kunming 650118, China
| | - Chao Li
- Infection and Immunity Laboratory, Kunming National High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Science & Peking Union Medical College, Kunming 650118, China
| | - Bo Liu
- Infection and Immunity Laboratory, Kunming National High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Science & Peking Union Medical College, Kunming 650118, China
| | - Jiansheng Liu
- Infection and Immunity Laboratory, Kunming National High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Science & Peking Union Medical College, Kunming 650118, China
| | - Guanlin Wang
- Kunming University of Science and Technology, Kunming 650118, China
| | - Hongqi Liu
- Infection and Immunity Laboratory, Kunming National High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Science & Peking Union Medical College, Kunming 650118, China
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25
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Regulatory non-coding RNA: new instruments in the orchestration of cell death. Cell Death Dis 2016; 7:e2333. [PMID: 27512954 PMCID: PMC5108314 DOI: 10.1038/cddis.2016.210] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 06/10/2016] [Accepted: 06/20/2016] [Indexed: 01/17/2023]
Abstract
Non-coding RNA (ncRNA) comprises a substantial portion of primary transcripts that are generated by genomic transcription, but are not translated into protein. The possible functions of these once considered ‘junk' molecules have incited considerable interest and new insights have emerged. The two major members of ncRNAs, namely micro RNA (miRNA) and long non-coding RNA (lncRNA), have important regulatory roles in gene expression and many important physiological processes, which has recently been extended to programmed cell death. The previous paradigm of programmed cell death only by apoptosis has recently expanded to include modalities of regulated necrosis (RN), and particularly necroptosis. However, most research efforts in this field have been on protein regulators, leaving the role of ncRNAs largely unexplored. In this review, we discuss important findings concerning miRNAs and lncRNAs that modulate apoptosis and RN pathways, as well as the miRNA–lncRNA interactions that affect cell death regulation.
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Yu J, Han J, Zhang J, Li G, Liu H, Cui X, Xu Y, Li T, Liu J, Wang C. The long noncoding RNAs PVT1 and uc002mbe.2 in sera provide a new supplementary method for hepatocellular carcinoma diagnosis. Medicine (Baltimore) 2016; 95:e4436. [PMID: 27495068 PMCID: PMC4979822 DOI: 10.1097/md.0000000000004436] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common primary malignancy of the liver in adults worldwide. Several studies have demonstrated that long noncoding RNAs (lncRNAs) are involved in the development of various types of cancer, including HCC. These findings prompted us to examine the detectability of lncRNAs in blood samples from patients with HCC. In this study, we explored the expression levels of 31 cancer-related lncRNAs in sera from 71 HCC patients and 64 healthy individuals by reverse transcription and quantitative polymerase chain reaction (RT-qPCR). We found that 25 lncRNAs could be detected in the serum and that 7 had significantly different expression levels. A 2-lncRNA signature (PVT1 and uc002mbe.2) identified by stepwise regression showed potential as a diagnostic marker for HCC. The area under the receiver operating characteristic (ROC) curve was 0.764 (95% CI: 0.684-0.833). The sensitivity and specificity values of this serum 2-lncRNA signature for distinguishing HCC patients from the healthy group were 60.56% and 90.62%, respectively. The diagnostic ability of the combination of the serum 2-lncRNA signature with alpha-fetoprotein (AFP) was much greater than that of AFP alone. The expression levels of the 2 lncRNAs were associated with clinical parameters including tumor size, Barcelona Clinic Liver Cancer (BCLC) stage, and serum bilirubin.
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Affiliation(s)
- Jinyu Yu
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University
| | - Junqing Han
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University
| | - Jian Zhang
- Department of Radiation Oncology, Shandong Cancer Hospital, Shandong Academy of Medical Sciences
| | - Guanzhen Li
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University
| | - Hui Liu
- Department of Gastroenterology
| | | | | | - Tao Li
- Department of Infectious Disease, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | | | - Chuanxi Wang
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University
- Correspondence: Chuanxi Wang, PhD, Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong Province, 250021 China (e-mail: )
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Long noncoding RNAs in cancer: mechanisms of action and technological advancements. Mol Cancer 2016; 15:43. [PMID: 27233618 PMCID: PMC4884374 DOI: 10.1186/s12943-016-0530-6] [Citation(s) in RCA: 336] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 05/12/2016] [Indexed: 02/06/2023] Open
Abstract
The previous decade has seen long non-coding RNAs (lncRNAs) rise from obscurity to being defined as a category of genetic elements, leaving its mark on the field of cancer biology. With the current number of curated lncRNAs increasing by 10,000 in the last five years, the field is moving from annotation of lncRNA expression in various tumours to understanding their importance in the key cancer signalling networks and characteristic behaviours. Here, we summarize the previously identified as well as recently discovered mechanisms of lncRNA function and their roles in the hallmarks of cancer. Furthermore, we identify novel technologies for investigation of lncRNA properties and their function in carcinogenesis, which will be important for their translation to the clinic as novel biomarkers and therapeutic targets.
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Xiong XD, Ren X, Cai MY, Yang JW, Liu X, Yang JM. Long non-coding RNAs: An emerging powerhouse in the battle between life and death of tumor cells. Drug Resist Updat 2016; 26:28-42. [PMID: 27180308 DOI: 10.1016/j.drup.2016.04.001] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 03/31/2016] [Accepted: 04/08/2016] [Indexed: 12/12/2022]
Abstract
Long non-coding RNAs (lncRNAs) represent a class of non-protein coding transcripts longer than 200 nucleotides that have aptitude for regulating gene expression at the transcriptional, post-transcriptional or epigenetic levels. In recent years, lncRNAs, which are believed to be the largest transcript class in the transcriptomes, have emerged as important players in a variety of biological processes. Notably, the identification and characterization of numerous lncRNAs in the past decade has revealed a role for these molecules in the regulation of cancer cell survival and death. It is likely that this class of non-coding RNA constitutes a critical contributor to the assorted known or/and unknown mechanisms of intrinsic or acquired drug resistance. Moreover, the expression of lncRNAs is altered in various patho-physiological conditions, including cancer. Therefore, lncRNAs represent potentially important targets in predicting or altering the sensitivity or resistance of cancer cells to various therapies. Here, we provide an overview on the molecular functions of lncRNAs, and discuss their impact and importance in cancer development, progression, and therapeutic outcome. We also provide a perspective on how lncRNAs may alter the efficacy of cancer therapy and the promise of lncRNAs as novel therapeutic targets for overcoming chemoresistance. A better understanding of the functional roles of lncRNA in cancer can ultimately translate to the development of novel, lncRNA-based intervention strategies for the treatment or prevention of drug-resistant cancer.
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Affiliation(s)
- Xing-Dong Xiong
- Department of Biochemistry and Molecular Biology, Institute of Aging Research, Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Guangdong Medical University, Dongguan 523808, China; Department of Pharmacology and The Penn State Hershey Cancer Institute, The Pennsylvania State University College of Medicine and Milton S. Hershey Medical Center, 500 University Drive, Hershey, PA 17033, USA.
| | - Xingcong Ren
- Department of Pharmacology and The Penn State Hershey Cancer Institute, The Pennsylvania State University College of Medicine and Milton S. Hershey Medical Center, 500 University Drive, Hershey, PA 17033, USA
| | - Meng-Yun Cai
- Department of Biochemistry and Molecular Biology, Institute of Aging Research, Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Guangdong Medical University, Dongguan 523808, China
| | - Jay W Yang
- Department of Pharmacology and The Penn State Hershey Cancer Institute, The Pennsylvania State University College of Medicine and Milton S. Hershey Medical Center, 500 University Drive, Hershey, PA 17033, USA
| | - Xinguang Liu
- Department of Biochemistry and Molecular Biology, Institute of Aging Research, Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Guangdong Medical University, Dongguan 523808, China
| | - Jin-Ming Yang
- Department of Pharmacology and The Penn State Hershey Cancer Institute, The Pennsylvania State University College of Medicine and Milton S. Hershey Medical Center, 500 University Drive, Hershey, PA 17033, USA.
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Long Noncoding RNA KIAA0125 Potentiates Cell Migration and Invasion in Gallbladder Cancer. BIOMED RESEARCH INTERNATIONAL 2015; 2015:108458. [PMID: 26448925 PMCID: PMC4584029 DOI: 10.1155/2015/108458] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 08/15/2014] [Accepted: 08/20/2014] [Indexed: 01/13/2023]
Abstract
Gallbladder cancer (GBC) is one of the mostly aggressive diseases with poor prognosis due to the lack of severe symptoms. To date, little is known about the potential roles and underlying mechanisms of long noncoding RNAs (lncRNAs) in GBC initiation and progression. Thus, it provides us with a novel insight into the contribution of lncRNAs to GBC development. Remarkably, we found the differential expression of a lncRNA, namely, KIAA0125, in a pair of GBC cell sublines which possess different metastatic potentials. Then the effects of KIAA0125 on GBC cell migration, invasion, and epithelial-mesenchymal transitions (EMT) were investigated by using a lentivirus-mediated RNA interference (RNAi) system. Notably, cell migration and invasion were strongly inhibited by KIAA0125 suppression. Moreover, the expression of β-Catenin was increased and the expression of Vimentin was decreased in GBC-SD/M cells after KIAA0125 knockdown. Thus, our findings suggested that KIAA0125 promoted the migration and invasion of GBC cells and could serve as a potential therapeutic target in advanced GBC.
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30
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Wang Y, Liu X, Zhang H, Sun L, Zhou Y, Jin H, Zhang H, Zhang H, Liu J, Guo H, Nie Y, Wu K, Fan D, Zhang H, Liu L. Hypoxia-inducible lncRNA-AK058003 promotes gastric cancer metastasis by targeting γ-synuclein. Neoplasia 2015; 16:1094-106. [PMID: 25499222 PMCID: PMC4309257 DOI: 10.1016/j.neo.2014.10.008] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 10/16/2014] [Accepted: 10/23/2014] [Indexed: 02/07/2023] Open
Abstract
Hypoxia has been implicated as a crucial microenvironmental factor that induces cancer metastasis. We previously reported that hypoxia could promote gastric cancer (GC) metastasis, but the underlying mechanisms are not clear. Long noncoding RNAs (lncRNAs) have recently emerged as important regulators of carcinogenesis that act on multiple pathways. However, whether lncRNAs are involved in hypoxia-induced GC metastasis remains unknown. In this study, we investigated the differentially expressed lncRNAs resulting from hypoxia-induced GC and normoxia conditions using microarrays and validated our results through real-time quantitative polymerase chain reaction. We found an lncRNA, AK058003, that is upregulated by hypoxia. AK058003 is frequently upregulated in GC samples and promotes GC migration and invasion in vivo and in vitro. Furthermore, AK058003 can mediate the metastasis of hypoxia-induced GC cells. Next, we identified γ-synuclein (SNCG), which is a metastasis-related gene regulated by AK058003. In addition, we found that the expression of SNCG is positively correlated with that of AK058003 in the clinical GC samples used in our study. Furthermore, we found that the SNCG gene CpG island methylation was significantly increased in GC cells depleted of AK058003. Intriguingly, SNCG expression is also increased by hypoxia, and SNCG upregulation by AK058003 mediates hypoxia-induced GC cell metastasis. These results advance our understanding of the role of lncRNA-AK058003 as a regulator of hypoxia signaling, and this newly identified hypoxia/lncRNA-AK058003/SNCG pathway may help in the development of new therapeutics.
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Affiliation(s)
- Yafang Wang
- Department of Oncology, Tangdu Hospital, Fourth Military Medical University, 1 Xinsi Road, Xi'an 710038, China
| | - Xiangqiang Liu
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032,China
| | - Hongbo Zhang
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032,China
| | - Li Sun
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032,China
| | - Yongan Zhou
- Department of thoracic surgery, Tangdu Hospital, Fourth Military Medical University, 1 Xinsi Road, Xi'an 710038, China
| | - Haifeng Jin
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032,China
| | - Hongwei Zhang
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032,China
| | - Hui Zhang
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032,China
| | - Jiaming Liu
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032,China
| | - Hao Guo
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032,China
| | - Yongzhan Nie
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032,China
| | - Kaichun Wu
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032,China
| | - Daiming Fan
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032,China
| | - Helong Zhang
- Department of Oncology, Tangdu Hospital, Fourth Military Medical University, 1 Xinsi Road, Xi'an 710038, China.
| | - Lili Liu
- Department of Oncology, Tangdu Hospital, Fourth Military Medical University, 1 Xinsi Road, Xi'an 710038, China.
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31
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Lisitsyn NA, Chernyi AA, Karpov VL, Beresten SF. A role of long noncoding RNAs in carcinogenesis. Mol Biol 2015. [DOI: 10.1134/s002689331504010x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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32
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Knockdown of Rad9A enhanced DNA damage induced by trichostatin A in esophageal cancer cells. Tumour Biol 2015; 37:963-70. [DOI: 10.1007/s13277-015-3879-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 07/30/2015] [Indexed: 12/24/2022] Open
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Wang L, Zhang Y, Lv W, Lu J, Mu J, Liu Y, Dong P. Long non-coding RNA Linc-ITGB1 knockdown inhibits cell migration and invasion in GBC-SD/M and GBC-SD gallbladder cancer cell lines. Chem Biol Drug Des 2015; 86:1064-71. [PMID: 25893892 DOI: 10.1111/cbdd.12573] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 03/17/2015] [Accepted: 04/12/2015] [Indexed: 12/23/2022]
Abstract
Gallbladder cancer is a highly aggressive malignancy with a low 5-year survival rate. Despite advances in the molecular understanding of the initiation and progression in gallbladder cancer, treatment modalities such as surgery, radiotherapy, or chemotherapy in advanced cases did not yield promising outcomes. Therefore, it is of great importance to uncover new mechanism underlying gallbladder cancer growth and metastasis. In this study, we identified a differentially expressed long intergenic non-coding RNA, linc-ITGB1, in a pair of higher and lower metastatic gallbladder cancer cell sublines. Then, the potential role of linc-ITGB1 in gallbladder cancer cell proliferation, migration, and invasion was explored using a lentivirus-mediated RNA interference system. Functional analysis showed that knockdown of linc-ITGB1 significantly inhibited gallbladder cancer cell proliferation. Moreover, cell migration and invasion were reduced by over twofold in linc-ITGB1 knockdown cells probably due to upregulation of β-catenin and downregulation of vimentin, slug, and TCF8. In conclusion, linc-ITGB1 potentially promoted gallbladder cancer invasion and metastasis by accelerating the process of epithelial-to-mesenchymal transition, and the application of RNA interference targeting linc-ITGB1 might be a potential form of gallbladder cancer treatment in advanced cases.
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Affiliation(s)
- Lei Wang
- Department of General Surgery, Xinhua Hospital, Affiliated to School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092, China
| | - Yunjiao Zhang
- Department of General Surgery, Xinhua Hospital, Affiliated to School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092, China
| | - Wenjie Lv
- Department of General Surgery, Xinhua Hospital, Affiliated to School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092, China
| | - Jianhua Lu
- Department of General Surgery, Xinhua Hospital, Affiliated to School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092, China
| | - Jiasheng Mu
- Department of General Surgery, Xinhua Hospital, Affiliated to School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092, China
| | - Yingbin Liu
- Department of General Surgery, Xinhua Hospital, Affiliated to School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092, China
| | - Ping Dong
- Department of General Surgery, Xinhua Hospital, Affiliated to School of Medicine, Shanghai Jiao Tong University, Shanghai, 200092, China
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Liu J, Wan L, Lu K, Sun M, Pan X, Zhang P, Lu B, Liu G, Wang Z. The Long Noncoding RNA MEG3 Contributes to Cisplatin Resistance of Human Lung Adenocarcinoma. PLoS One 2015; 10:e0114586. [PMID: 25992654 PMCID: PMC4439130 DOI: 10.1371/journal.pone.0114586] [Citation(s) in RCA: 142] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 11/11/2014] [Indexed: 01/01/2023] Open
Abstract
Long noncoding RNAs (lncRNAs) have been identified as oncogenes or tumor suppressors that are involved in tumorigenesis and chemotherapy drug resistance. Maternally expressed gene 3 (MEG3) is an imprinted gene located at 14q32 that encodes an lncRNA, and decreased MEG3 expression plays an important role in multiple cancers. However, its biological role in the development of the chemoresistance phenotype of human lung adenocarcinoma (LAD) is unknown. This study aimed to observe the expression of MEG3 in LAD and to evaluate its biological role and clinical significance in the resistance of LAD cells to cisplatin. MEG3 expression was markedly decreased in cisplatin-resistant A549/DDP cells compared with parental A549 cells as shown by an lncRNA microarray. MEG3 overexpression in A549/DDP cells increased their chemosensitivity to cisplatin both in vitro and in vivo by inhibiting cell proliferation and inducing apoptosis. By contrast, MEG3 knockdown in A549 cells decreased the chemosensitivity. Moreover, MEG3 was decreased in cisplatin-insensitive LAD tissues while p53 protein levels were decreased and Bcl-xl protein levels increased. Furthermore, patients with lower levels of MEG3 expression showed worse responses to cisplatin-based chemotherapy. These findings demonstrate that MEG3 is significantly downregulated in LAD and partially regulates the cisplatin resistance of LAD cells through the control of p53 and Bcl-xl expression. Thus, MEG3 may represent a new marker of poor response to cisplatin and could be a potential therapeutic target for LAD chemotherapy.
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Affiliation(s)
- Jing Liu
- Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, P.R. China
| | - Li Wan
- Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, P.R. China
| | - Kaihua Lu
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, P.R. China
| | - Ming Sun
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, P.R. China
| | - Xuan Pan
- Department of Medical Oncology, Nanjing Medical University Affiliated Cancer Hospital of Jiangsu Province, Cancer Institution of Jiangsu Province, Nanjing,P.R. China
| | - Ping Zhang
- Department of Pathology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, P.R. China
| | - Binbin Lu
- Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, P.R. China
| | - Guojian Liu
- Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, P.R. China
| | - Zhaoxia Wang
- Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, P.R. China
- * E-mail:
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Liu LX, Wu LF. Research progress in long non-coding RNAs and liver diseases. Shijie Huaren Xiaohua Zazhi 2015; 23:1211-1217. [DOI: 10.11569/wcjd.v23.i8.1211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) are RNA transcripts longer than 200 nt without protein coding capacity. LncRNAs regulate gene expression at epigenetic transcriptional and post-transcriptional levels, and they are deeply involved in biological and pathological changes. Recently, more and more evidence has shown that the altered expression of lncRNAs in hepatocellular carcinoma and viral hepatitis is important for the development, progression and prognosis of hepatic diseases. This review focuses on the role of lncRNAs in the pathogenesis of hepatocellular carcinoma and other liver diseases.
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36
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Sun J, Bie B, Zhang S, Yang J, Li Z. Long non-coding RNAs: critical players in hepatocellular carcinoma. Int J Mol Sci 2014; 15:20434-48. [PMID: 25387074 PMCID: PMC4264176 DOI: 10.3390/ijms151120434] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Revised: 10/30/2014] [Accepted: 10/30/2014] [Indexed: 02/07/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is a complex disease with multiple underlying pathogenic mechanisms caused by a variety of etiologic factors. Emerging evidence showed that long non-coding RNAs (lncRNAs), with size larger than 200 nucleotides (nt), play important roles in various types of cancer development and progression. In recent years, some dysregulated lncRNAs in HCC have been revealed and roles for several of them in HCC have been characterized. All these findings point to the potential of lncRNAs as prospective novel therapeutic targets in HCC. In this review, we summarize known dysregulated lncRNAs in HCC, and review potential biological roles and underlying molecular mechanisms of lncRNAs in HCC. Additionally, we discussed prospects of lncRNAs as potential biomarker and therapeutic target for HCC. In conclusion, this paper will help us gain better understanding of molecular mechanisms by which lncRNAs perform their function in HCC and also provide general strategies and directions for future research.
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Affiliation(s)
- Jin Sun
- National-Local Joint Engineering Research Center of Biodiagnostics and Biotherapy, Xi'an Jiaotong University, Xi'an 710004, China.
| | - Beibei Bie
- National-Local Joint Engineering Research Center of Biodiagnostics and Biotherapy, Xi'an Jiaotong University, Xi'an 710004, China.
| | - Shu Zhang
- National-Local Joint Engineering Research Center of Biodiagnostics and Biotherapy, Xi'an Jiaotong University, Xi'an 710004, China.
| | - Jun Yang
- National-Local Joint Engineering Research Center of Biodiagnostics and Biotherapy, Xi'an Jiaotong University, Xi'an 710004, China.
| | - Zongfang Li
- National-Local Joint Engineering Research Center of Biodiagnostics and Biotherapy, Xi'an Jiaotong University, Xi'an 710004, China.
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Abstract
Long non-coding RNAs (lncRNAs) are series of transcripts with important biological functions. Various diseases have been associated with aberrant expression of lncRNAs and the related dysregulation of mRNAs. In this review, we highlight the mechanisms of dynamic lncRNA expression. The chromatin state contributes to the low and specific expression of lncRNAs. The transcription of non-coding RNA genes is regulated by many core transcription factors applied to protein-coding genes. However, specific DNA sequences may allow their unsynchronized transcription with their location-associated mRNAs. Additionally, there are multiple mechanisms involved in the post-transcriptional regulation of lncRNAs. Among these, microRNAs might have indispensible regulatory effects on lncRNAs, based on recent discoveries.
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38
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Long non-coding RNAs and hepatocellular carcinoma. Mol Clin Oncol 2014; 3:13-17. [PMID: 25469263 DOI: 10.3892/mco.2014.429] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 09/13/2014] [Indexed: 02/06/2023] Open
Abstract
Recent advances in next-generation sequencing technology in transcriptome analysis have helped identify numerous non-coding RNAs. The long non-coding RNA (lncRNA) is commonly defined as an RNA molecule with a length of 200 bp-100 kbp that lacks protein-coding potential. LncRNAs play a critical role in the regulation of gene expression, including chromatin modification, transcription and post-transcriptional processing. It has been confirmed that dysregulation of lncRNAs is associated with a number of human diseases, particularly tumors. In this study, we focused on the most extensively investigated lncRNAs in hepatocellular carcinoma (HCC). The biological functions and molecular mechanisms of the majority of lncRNAs have yet to be investigated. The improved knowledge on lncRNAs in HCC may help identify lncRNAs that may be used as novel prognostic markers and therapeutic targets.
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39
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Anestopoulos I, Voulgaridou GP, Georgakilas AG, Franco R, Pappa A, Panayiotidis MI. Epigenetic therapy as a novel approach in hepatocellular carcinoma. Pharmacol Ther 2014; 145:103-19. [PMID: 25205159 DOI: 10.1016/j.pharmthera.2014.09.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 09/02/2014] [Indexed: 02/07/2023]
Abstract
Hepatocellular carcinoma (HCC) is the most common type of liver malignancy and one with high fatality. Its 5-year survival rate remains low and thus, there is a need for improvement of current treatment strategies as well as development of novel targeted methodologies in order to optimize existing therapeutic protocols. To this end, only recently, it was discovered that its pathophysiology also involves epigenetic alterations in DNA methylation, histone modifications and/or non-coding microRNA patterns. Unlike genetic events, epigenetic alterations are reversible and thus potentially considered to be an alternative option in cancer treatment protocols. In this review, we describe the general characteristics and resulted major alterations of the epigenetic machinery as well as current state of progress of epigenetic therapy (via different single or combinatorial experimental approaches) in HCC.
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Affiliation(s)
- Ioannis Anestopoulos
- Department of Molecular Biology & Genetics, Democritus University of Thrace, Alexandroupolis, Greece
| | | | - Alexandros G Georgakilas
- School of Applied Mathematical & Physical Sciences, National Technical University of Athens, Athens, Greece
| | - Rodrigo Franco
- Redox Biology Center, School of Veterinary Medicine & Biomedical Sciences, Redox Biology Center, University of Nebraska-Lincoln, USA
| | - Aglaia Pappa
- Department of Molecular Biology & Genetics, Democritus University of Thrace, Alexandroupolis, Greece
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Marrone AK, Beland FA, Pogribny IP. Noncoding RNA response to xenobiotic exposure: an indicator of toxicity and carcinogenicity. Expert Opin Drug Metab Toxicol 2014; 10:1409-22. [PMID: 25171492 DOI: 10.1517/17425255.2014.954312] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Human exposure to certain environmental and occupational chemicals is one of the major risk factors for noncommunicable diseases, including cancer. Therefore, it is desirable to take advantage of subtle exposure-related adverse cellular events for early disease detection and to identify potential dangers caused by new and currently under-evaluated drugs and chemicals. Nongenotoxic events due to carcinogen/toxicant exposure are a general hallmark of sustained cellular stress leading to tumorigenesis. These processes are globally regulated via noncoding RNAs (ncRNAs). Tumorigenesis-associated genotoxic and nongenotoxic events lead to the altered expression of ncRNAs and may provide a mechanistic link between chemical exposure and tumorigenesis. Current advances in toxicogenomics are beginning to provide valuable insight into gene-chemical interactions at the transcriptome level. AREAS COVERED In this review, we summarize recent information about the impact of xenobiotics on ncRNAs. Evidence highlighted in this review suggests a critical role of ncRNAs in response to carcinogen/toxicant exposure. EXPERT OPINION Benefits for the use of ncRNAs in carcinogenicity assessment include remarkable tissue specificity, early appearance, low baseline variability, and their presence and stability in biological fluids, which suggests that the incorporation of ncRNAs in the evaluation of cancer risk assessment may enhance substantially the efficiency of toxicity and carcinogenicity testing.
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Affiliation(s)
- April K Marrone
- Commissioner Fellow, Research Chemist,National Center for Toxicological Research, Division of Biochemical Toxicology , Jefferson, AR , USA
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Zhao J, Greene CM, Gray SG, Lawless MW. Long noncoding RNAs in liver cancer: what we know in 2014. Expert Opin Ther Targets 2014; 18:1207-18. [PMID: 25145388 DOI: 10.1517/14728222.2014.941285] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
INTRODUCTION Hepatocellular carcinoma (HCC) is the most common form of primary liver cancer with an estimated over half a million new cases diagnosed annually. Due to the difficulty in early diagnosis and lack of effective treatment options, HCC is currently ranked as the second highest neoplastic-related mortality in the world, with an extremely low 5-year survival rate of between 6 and 11%. Long noncoding RNAs (lncRNAs), are genes lacking protein coding ability, have recently emerged as pivotal participants in biological processes, often dysregulated in a range of cancers, including HCC. AREAS COVERED In this review, we highlight the recent findings of lncRNAs in HCC pathogenesis, with particular attention on epigenetic events. In silico analysis was utilized to emphasize intrinsic linkages within the ncRNA families associated with hepatocarcinogenesis. EXPERT OPINION While our understanding of lncRNAs in the onset and progression of HCC is still in its infancy, there is no doubt that understanding the activities of ncRNAs will certainly secure strong biomarkers and improve treatment options for HCC patients.
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Affiliation(s)
- Jun Zhao
- Experimental Medicine, UCD School of Medicine and Medical Science, Mater Misericordiae University Hospital, Catherine McAuley Centre, Nelson Street , Dublin 7 , Ireland
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Li YL, Yang TS, Ruan WM, Cui W, Jin Y, Zou XM. Effect of trichostatin a on SGC-7901 gastric cancer cells. Int J Clin Exp Med 2014; 7:1958-1966. [PMID: 25232376 PMCID: PMC4161536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 06/28/2014] [Indexed: 06/03/2023]
Abstract
AIM To explore Trichostatin A (TSA) effect on SGC-7901 gastric cancer cells. METHODS MTT, fluorescence microscopy, and flow cytometry were used to assess TSA effect on cell growth and apoptosis in SGC-7901. Immunocytochemistry was used to evaluate the expression of acetylated histone H4 in SGC-7901 cells.Gene expression profile was determined by microarray assays. Glycoprotein hormones alpha subunit (CGA) gene and protein expressions in SGC-7901 cells were evaluated by Real-time PCR and Western blot, respectively. In addition, CGA protein levels in gastric adenocarcinoma and normal adjacent tissues were assessed by immunohistochemistry. RESULTS TSA inhibited SGC-7901 cell growth. In addition, cell proliferation was significantly decreased (P = 0.02) in TSA treatment groups (0.93 ± 0.07) compared with controls (1.15 ± 0.07). Apoptosis related morphological changes, including nuclear chromatin condensation and fluorescence strength, were observed by fluorescence microscopy. These findings corroborated the increased expression of acetylated histone H4 observed in TSA treated cells compared to controls, as determined by immunocytochemistry. Interestingly, treatment of SGC-7901 cells with TSA (75 ng/ml) resulted in CGA gene down-regulation (P = 0.0381). Accordingly, CGA protein levels were decreased in TSA treated SGC-7901 cells. Finally, immunohistochemistry analysis showed that CGA expression was significantly higher in gastric adenocarcinoma tissues than normal adjacent tissues (P = 0.001). CONCLUSION TSA induces cell apoptosis and increases the levels of acetylated histone H4 in SGC-7901 cells. In addition, TSA treatment decreases the expression in gastric cancer cells of the CGA gene, which is upregulated in gastric adenocarcinoma tissues.
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Affiliation(s)
- Yun-Long Li
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical UniversityHarbin 150081, Heilongjiang Province, China
| | - Tong-Shu Yang
- Department of Laboratory, The Third Affiliated Hospital of Harbin Medical UniversityHarbin 150081, Heilongjiang Province, China
| | - Wei-Min Ruan
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical UniversityHarbin 150081, Heilongjiang Province, China
| | - Wu Cui
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical UniversityHarbin 150081, Heilongjiang Province, China
| | - Yan Jin
- Key Laboratory of Medical Genetics (Harbin Medical University), Heilongjiang Higher Education InstitutionsHarbin 150081, Heilongjiang Province, China
| | - Xiao-Ming Zou
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical UniversityHarbin 150081, Heilongjiang Province, China
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Rossi MN, Antonangeli F. LncRNAs: New Players in Apoptosis Control. Int J Cell Biol 2014; 2014:473857. [PMID: 24627686 PMCID: PMC3929073 DOI: 10.1155/2014/473857] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 11/22/2013] [Indexed: 12/26/2022] Open
Abstract
The discovery that the mammalian genome is largely transcribed and that almost half of the polyadenylated RNAs is composed of noncoding RNAs has attracted the attention of the scientific community. Growing amount of data suggests that long noncoding RNAs (lncRNAs) are a new class of regulators involved not only in physiological processes, such as imprinting and differentiation, but also in cancer progression and neurodegeneration. Apoptosis is a well regulated type of programmed cell death necessary for correct organ development and tissue homeostasis. Indeed, cancer cells often show an inhibition of the apoptotic pathways and it is now emerging that overexpression or downregulation of different lncRNAs in specific types of tumors sensitize cancer cells to apoptotic stimuli. In this review we summarize the latest studies on lncRNAs and apoptosis with major attention to those performed in cancer cells and in healthy cells upon differentiation. We discuss the new perspectives of using lncRNAs as targets of anticancer drugs. Finally, considering that lncRNA levels have been reported to have a correlation with specific cancer types, we argue the possibility of using lncRNAs as tumor biomarkers.
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Affiliation(s)
- Marianna Nicoletta Rossi
- 1Pasteur Institute-Fondazione Cenci Bolognetti, Department of Cellular Biotechnologies and Hematology, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
| | - Fabrizio Antonangeli
- 2Pasteur Institute-Fondazione Cenci Bolognetti, Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 291, 00161 Rome, Italy
- *Fabrizio Antonangeli:
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Huang JL, Zheng L, Hu YW, Wang Q. Characteristics of long non-coding RNA and its relation to hepatocellular carcinoma. Carcinogenesis 2013; 35:507-14. [PMID: 24296588 DOI: 10.1093/carcin/bgt405] [Citation(s) in RCA: 155] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most common cancers worldwide with high prevalence and lethality. However, the underlying mechanism for HCC has not been entirely elucidated. Recent studies have highlighted the roles of long non-coding RNAs (lncRNAs) in carcinogenesis, and it is suggested that they might play critical roles in HCC progression. Here, we will briefly introduce the biology of lncRNAs, emphasizing the mechanisms and emerging roles of HCC-related lncRNAs. To date, HCC-related lncRNAs are demonstrated to influence the life cycle of genes by various means including epigenetic silencing, splicing regulation, lncRNA-miRNA interaction, lncRNA-protein interaction and genetic variation. Moreover, they can participate in diverse biological processes involved in HCC progression through impacts upon cell proliferation, apoptosis, invasion and metastasis and angiogenesis. Since lncRNA can present in body fluid and have good specificity and accessibility, some HCC-related lncRNAs are suggested to be useful as novel potential biomarkers for HCC diagnosis, prognosis and prediction of response to therapy. Those HCC-related lncRNAs may provide potential novel therapeutic targets for HCC and other diseases.
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Affiliation(s)
- Jin-Lan Huang
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Road, Guangzhou, Guangdong 510515, China
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45
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Zhao Y, Guo Q, Chen J, Hu J, Wang S, Sun Y. Role of long non-coding RNA HULC in cell proliferation, apoptosis and tumor metastasis of gastric cancer: a clinical and in vitro investigation. Oncol Rep 2013; 31:358-64. [PMID: 24247585 DOI: 10.3892/or.2013.2850] [Citation(s) in RCA: 218] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 11/04/2013] [Indexed: 12/12/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) are emerging as key molecules in human cancer. Highly upregulated in liver cancer (HULC), an lncRNA, has recently been revealed to be involved in hepatocellular carcinoma development and progression. It remains unclear, however, whether HULC plays an oncogenic role in human gastric cancer (GC). In the present study, we demonstrated that HULC was significantly overexpressed in GC cell lines and GC tissues compared with normal controls, and this overexpression was correlated with lymph node metastasis, distant metastasis and advanced tumor node metastasis stages. In addition, a receiver operating characteristic (ROC) curve was constructed to evaluate the diagnostic values and the area under the ROC curve of HULC was up to 0.769. To uncover its functional importance, gain- and loss-of-function studies were performed to evaluate the effect of HULC on cell proliferation, apoptosis and invasion in vitro. Overexpression of HULC promoted proliferation and invasion and inhibited cell apoptosis in SGC7901 cells, while knockdown of HULC in SGC7901 cells showed the opposite effect. Mechanistically, we discovered that overexpression of HULC could induce patterns of autophagy in SGC7901 cells; more importantly, autophagy inhibition increased overexpression of HULC cell apoptosis. We also determined that silencing of HULC effectively reversed the epithelial-to-mesenchymal transition (EMT) phenotype. In summary, our results suggest that HULC may play an important role in the growth and tumorigenesis of human GC, which provides us with a new biomarker in GC and perhaps a potential target for GC prevention, diagnosis and therapeutic treatment.
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Affiliation(s)
- Yan Zhao
- Department of Minimally Invasive Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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He Y, Meng XM, Huang C, Wu BM, Zhang L, Lv XW, Li J. Long noncoding RNAs: Novel insights into hepatocelluar carcinoma. Cancer Lett 2013; 344:20-27. [PMID: 24183851 DOI: 10.1016/j.canlet.2013.10.021] [Citation(s) in RCA: 320] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 10/18/2013] [Accepted: 10/23/2013] [Indexed: 02/07/2023]
Abstract
Recent advances in non-protein coding part of human genome analysis have discovered extensive transcription of large RNA transcripts that lack of coding protein function, termed long noncoding RNAs (lncRNAs). It is becoming evident that lncRNAs may be an important class of pervasive genes involved in carcinogenesis and metastasis. However, the biological and molecular mechanisms of lncRNAs in diverse diseases are not yet fully understood. Thus, it is anticipated that more efforts should be made to clarify the lncRNAs world. Moreover, accumulating studies have demonstrated that a class of lncRNAs are dysregulated in hepatocellular carcinoma(HCC) and closely related with tumorigenesis, metastasis, prognosis or diagnosis. In this review, we will briefly discuss the regulation and functional role of lncRNAs in HCC, therefore evaluating the potential of lncRNAs as prospective novel therapeutic targets in HCC.
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Affiliation(s)
- Yong He
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Xiao-Ming Meng
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Cheng Huang
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Bao-Ming Wu
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Lei Zhang
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Xiong-Wen Lv
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China
| | - Jun Li
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, Hefei 230032, China; The Key Laboratory of Anti-Inflammatory and Immune Medicine (Anhui Medical University), Ministry of Education, China; Institute for Liver Diseases of Anhui Medical University (ILD-AMU), Anhui Medical University, Hefei 230032, China.
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