1
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Gautam SK, Batra SK, Jain M. Molecular and metabolic regulation of immunosuppression in metastatic pancreatic ductal adenocarcinoma. Mol Cancer 2023; 22:118. [PMID: 37488598 PMCID: PMC10367391 DOI: 10.1186/s12943-023-01813-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 06/23/2023] [Indexed: 07/26/2023] Open
Abstract
Immunosuppression is a hallmark of pancreatic ductal adenocarcinoma (PDAC), contributing to early metastasis and poor patient survival. Compared to the localized tumors, current standard-of-care therapies have failed to improve the survival of patients with metastatic PDAC, that necessecitates exploration of novel therapeutic approaches. While immunotherapies such as immune checkpoint blockade (ICB) and therapeutic vaccines have emerged as promising treatment modalities in certain cancers, limited responses have been achieved in PDAC. Therefore, specific mechanisms regulating the poor response to immunotherapy must be explored. The immunosuppressive microenvironment driven by oncogenic mutations, tumor secretome, non-coding RNAs, and tumor microbiome persists throughout PDAC progression, allowing neoplastic cells to grow locally and metastasize distantly. The metastatic cells escaping the host immune surveillance are unique in molecular, immunological, and metabolic characteristics. Following chemokine and exosomal guidance, these cells metastasize to the organ-specific pre-metastatic niches (PMNs) constituted by local resident cells, stromal fibroblasts, and suppressive immune cells, such as the metastasis-associated macrophages, neutrophils, and myeloid-derived suppressor cells. The metastatic immune microenvironment differs from primary tumors in stromal and immune cell composition, functionality, and metabolism. Thus far, multiple molecular and metabolic pathways, distinct from primary tumors, have been identified that dampen immune effector functions, confounding the immunotherapy response in metastatic PDAC. This review describes major immunoregulatory pathways that contribute to the metastatic progression and limit immunotherapy outcomes in PDAC. Overall, we highlight the therapeutic vulnerabilities attributable to immunosuppressive factors and discuss whether targeting these molecular and immunological "hot spots" could improve the outcomes of PDAC immunotherapies.
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Affiliation(s)
- Shailendra K Gautam
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Maneesh Jain
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
- Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
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2
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Wang J, Zhu Y, Ai X, Wan H, Jia W, Chu J, Xu B, Kong X, Kong L. Long noncoding RNA 02027 inhibits proliferation, migration and invasion of hepatocellular carcinoma via miR-625-3p/PDLIM5 pathway. J Gene Med 2023:e3485. [PMID: 36811210 DOI: 10.1002/jgm.3485] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 01/02/2023] [Accepted: 02/16/2023] [Indexed: 02/24/2023] Open
Abstract
BACKGROUND Long non-coding RNAs have been established to promote or inhibit the oncogenic and tumorigenic potential of various cancers, acting as competing endogenous RNAs (ceRNAs) for specific microRNAs. The primary objective of the study was to investigate the underlying mechanism by which the LINC02027/miR-625-3p/PDLIM5 axis affects proliferation, migration and invasion in hepatocellular carcinoma (HCC). METHODS The differentially expressed gene was selected based on gene sequencing and bioinformation database analysis of HCC and adjacent non-tumor tissues. The expression of LINC02027 in HCC tissues and cells and its regulatory effect on the development of HCC were detected by colony formation, cell counting kit-8 assays, wound healing assays, Transwell assays and subcutaneous tumorigenesis assays in nude mice. According to the results of database prediction, quantitative real-time polymerase chain reaction and dual-luciferase reporter assay, the downstream microRNA and target gene were searched. Finally, HCC cells were transfected with lentivirus and used for cell function assays in vitro and in vivo. RESULTS Downregulation of LINC02027 was detected in HCC tissues and cell lines and was associated with poor prognosis. The overexpression of LINC02027 suppressed the proliferation, migration and invasion of HCC cells. Mechanistically, LINC02027 inhibited epithelial-to-mesenchymal transition. As a ceRNA, LINC02027 inhibited the malignant ability of HCC by competitively binding to miR-625-3p to regulate the expression of PDLIM5. CONCLUSIONS The LINC02027/miR-625-3p/PDLIM5 axis inhibits the development of HCC.
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Affiliation(s)
- Jinyi Wang
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu, China
| | - Yong Zhu
- Department of General Surgery, Anhui Public Clinical Center, The First Affiliated Hospital of Anhui Medical University North District, Hefei, China
| | - Xiaoming Ai
- Department of General Surgery, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Hong Wan
- Department of General Surgery, The Fourth Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Wenbo Jia
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu, China
| | - Jian Chu
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu, China
| | - Bin Xu
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu, China
| | - Xiangxu Kong
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu, China
| | - Lianbao Kong
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu, China
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3
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Wan L, Li W, Meng Y, Hou Y, Chen M, Xu B. Inflammatory Immune-Associated eRNA: Mechanisms, Functions and Therapeutic Prospects. Front Immunol 2022; 13:849451. [PMID: 35514959 PMCID: PMC9063412 DOI: 10.3389/fimmu.2022.849451] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
The rapid development of multiple high-throughput sequencing technologies has made it possible to explore the critical roles and mechanisms of functional enhancers and enhancer RNAs (eRNAs). The inflammatory immune response, as a fundamental pathological process in infectious diseases, cancers and immune disorders, coordinates the balance between the internal and external environment of the organism. It has been shown that both active enhancers and intranuclear eRNAs are preferentially expressed over inflammation-related genes in response to inflammatory stimuli, suggesting that enhancer transcription events and their products influence the expression and function of inflammatory genes. Therefore, in this review, we summarize and discuss the relevant inflammatory roles and regulatory mechanisms of eRNAs in inflammatory immune cells, non-inflammatory immune cells, inflammatory immune diseases and tumors, and explore the potential therapeutic effects of enhancer inhibitors affecting eRNA production for diseases with inflammatory immune responses.
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Affiliation(s)
- Lilin Wan
- Medical School, Southeast University, Nanjing, China
- Department of Urology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
| | - Wenchao Li
- Department of Urology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
| | - Yuan Meng
- Department of Urology, Nanjing Lishui District People’s Hospital, Zhongda Hospital, Southeast University, Nanjing, China
| | - Yue Hou
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, Biomedical Informatics and Genomics Center, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, China
| | - Ming Chen
- Department of Urology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
- Department of Urology, Nanjing Lishui District People’s Hospital, Zhongda Hospital, Southeast University, Nanjing, China
| | - Bin Xu
- Department of Urology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
- Department of Urology, Nanjing Lishui District People’s Hospital, Zhongda Hospital, Southeast University, Nanjing, China
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4
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Bure IV, Nemtsova MV. Methylation and Noncoding RNAs in Gastric Cancer: Everything Is Connected. Int J Mol Sci 2021; 22:ijms22115683. [PMID: 34073603 PMCID: PMC8199097 DOI: 10.3390/ijms22115683] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 05/19/2021] [Accepted: 05/25/2021] [Indexed: 12/18/2022] Open
Abstract
Despite recent progress, gastric cancer remains one of the most common cancers and has a high mortality rate worldwide. Aberrant DNA methylation pattern and deregulation of noncoding RNA expression appear in the early stages of gastric cancer. Numerous investigations have confirmed their significant role in gastric cancer tumorigenesis and their high potential as diagnostic and prognostic biomarkers. Currently, it is clear that these epigenetic regulators do not work alone but interact with each other, generating a complex network. The aim of our review was to summarize the current knowledge of this interaction in gastric cancer and estimate its clinical potential for the diagnosis, prognosis, and treatment of the disease.
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Affiliation(s)
- Irina V. Bure
- Laboratory of Medical Genetics, Institute of Molecular Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia;
- Correspondence: ; Tel.: +49-915-069-2721
| | - Marina V. Nemtsova
- Laboratory of Medical Genetics, Institute of Molecular Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia;
- Laboratory of Epigenetics, Research Centre for Medical Genetics, 115522 Moscow, Russia
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5
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Sharma J, Kumari R, Bhargava A, Tiwari R, Mishra PK. Mitochondrial-induced Epigenetic Modifications: From Biology to Clinical Translation. Curr Pharm Des 2021; 27:159-176. [PMID: 32851956 DOI: 10.2174/1381612826666200826165735] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 07/27/2020] [Indexed: 11/22/2022]
Abstract
Mitochondria are maternally inherited semi-autonomous organelles that play a central role in redox balance, energy metabolism, control of integrated stress responses, and cellular homeostasis. The molecular communication between mitochondria and the nucleus is intricate and bidirectional in nature. Though mitochondrial genome encodes for several key proteins involved in oxidative phosphorylation, several regulatory factors encoded by nuclear DNA are prominent contributors to mitochondrial biogenesis and function. The loss of synergy between this reciprocal control of anterograde (nuclear to mitochondrial) and retrograde (mitochondrial to nuclear) signaling, triggers epigenomic imbalance and affects mitochondrial function and global gene expressions. Recent expansions of our knowledge on mitochondrial epigenomics have offered novel perspectives for the study of several non-communicable diseases including cancer. As mitochondria are considered beacons for pharmacological interventions, new frontiers in targeted delivery approaches could provide opportunities for effective disease management and cure through reversible epigenetic reprogramming. This review focuses on recent progress in the area of mitochondrial-nuclear cross-talk and epigenetic regulation of mitochondrial DNA methylation, mitochondrial micro RNAs, and post-translational modification of mitochondrial nucleoid-associated proteins that hold major opportunities for targeted drug delivery and clinical translation.
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Affiliation(s)
- Jahnavi Sharma
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | - Roshani Kumari
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | - Arpit Bhargava
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | - Rajnarayan Tiwari
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | - Pradyumna K Mishra
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, India
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6
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Hallajzadeh J, Amirani E, Mirzaei H, Shafabakhsh R, Mirhashemi SM, Sharifi M, Yousefi B, Mansournia MA, Asemi Z. Circular RNAs: new genetic tools in melanoma. Biomark Med 2020; 14:563-571. [PMID: 32462914 DOI: 10.2217/bmm-2019-0567] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Melanoma is the most lethal form of skin cancer. New technologies have resulted in major advances in the diagnosis and treatment of melanoma and other cancer types. Recently, some studies have investigated the role of circular RNAs (circRNAs) in different cancers. CircRNAs are a member of long noncoding RNA family mainly formed through back-splicing and have a closed-loop structure. These molecules affect several biological and oncogenic cascades in diverse ways via acting as microRNA sponge, interacting with RNA-binding proteins and acting as a transcription regulator. In this review, we made an insight into the impact of circRNA dysregulation in the melanoma tumorigenesis based on the presented evidences.
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Affiliation(s)
- Jamal Hallajzadeh
- Department of Biochemistry & Nutrition, Research Center for Evidence-Based Health Management, Maragheh University of Medical Sciences, Maragheh, Iran
| | - Elaheh Amirani
- Research Center for Biochemistry & Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Hamed Mirzaei
- Research Center for Biochemistry & Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Rana Shafabakhsh
- Research Center for Biochemistry & Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Seyyed M Mirhashemi
- Metabolic Diseases Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Mehran Sharifi
- Department of Hematology & Oncology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Bahman Yousefi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad A Mansournia
- Department of Epidemiology & Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Zatollah Asemi
- Research Center for Biochemistry & Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
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7
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Shih JH, Chen HY, Lin SC, Yeh YC, Shen R, Lang YD, Wu DC, Chen CY, Chen RH, Chou TY, Jou YS. Integrative analyses of noncoding RNAs reveal the potential mechanisms augmenting tumor malignancy in lung adenocarcinoma. Nucleic Acids Res 2020; 48:1175-1191. [PMID: 31853539 PMCID: PMC7026595 DOI: 10.1093/nar/gkz1149] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/06/2019] [Accepted: 12/01/2019] [Indexed: 01/12/2023] Open
Abstract
Precise noncoding RNA (ncRNA)-based network prediction is necessary to reveal ncRNA functions and pathological mechanisms. Here, we established a systemic pipeline to identify prognostic ncRNAs, predict their functions and explore their pathological mechanisms in lung adenocarcinoma (LUAD). After in silico and experimental validation based on evaluations of prognostic value in multiple LUAD cohorts, we selected the PTTG3P pseudogene from among other prognostic ncRNAs (MIR497HG, HSP078, TBX5-AS1, LOC100506990 and C14orf64) for mechanistic studies. PTTG3P upregulation in LUAD cells shortens the metaphase to anaphase transition in mitosis, increases cell viability after cisplatin or paclitaxel treatment, facilitates tumor growth that leads to poor survival in orthotopic lung models, and is associated with a poor survival rate in LUAD patients in the TCGA cohort who received chemotherapy. Mechanistically, PTTG3P acts as an ncRNA that interacts with the transcription factor FOXM1 to regulate the transcriptional activation of the mitotic checkpoint kinase BUB1B, which augments tumor growth and chemoresistance and leads to poor outcomes for LUAD patients. Overall, we established a systematic strategy to uncover prognostic ncRNAs with functional prediction methods suitable for pan-cancer studies. Moreover, we revealed that PTTG3P, due to its upregulation of the PTTG3P/FOXM1/BUB1B axis, could be a therapeutic target for LUAD patients.
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Affiliation(s)
- Jou-Ho Shih
- Genome and Systems Biology Program, National Taiwan University and Academia Sinica, Taipei 10617, Taiwan.,Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Hsin-Yi Chen
- Graduate Institute of Cancer Biology & Drug Discovery, College of Medical Science & Technology, Taipei Medical University, Taipei 11221, Taiwan
| | - Shin-Chih Lin
- Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei 11221, Taiwan.,Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan.,Division of Molecular Pathology, Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei 11221, Taiwan
| | - Yi-Chen Yeh
- Division of Molecular Pathology, Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei 11221, Taiwan
| | - Roger Shen
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan.,Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei 11221, Taiwan
| | - Yaw-Dong Lang
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Dung-Chi Wu
- Genome and Systems Biology Program, National Taiwan University and Academia Sinica, Taipei 10617, Taiwan.,Department of Bio-Industrial Mechatronics Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Chien-Yu Chen
- Genome and Systems Biology Program, National Taiwan University and Academia Sinica, Taipei 10617, Taiwan.,Department of Bio-Industrial Mechatronics Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Ruey-Hwa Chen
- Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Teh-Ying Chou
- Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei 11221, Taiwan.,Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 11221, Taiwan.,Division of Molecular Pathology, Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei 11221, Taiwan.,Institute of Clinical Medicine, National Yang-Ming University, Taipei 11221, Taiwan
| | - Yuh-Shan Jou
- Genome and Systems Biology Program, National Taiwan University and Academia Sinica, Taipei 10617, Taiwan.,Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan.,Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei 11221, Taiwan
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8
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Unusual nature of long non-coding RNAs coding for “unusual peptides”. Gene 2020; 729:144298. [DOI: 10.1016/j.gene.2019.144298] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/05/2019] [Accepted: 12/15/2019] [Indexed: 01/09/2023]
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9
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Jia X, Shi Y, Zhu Y, Meng W, He L, Jia Y, Tong Z. Integrated Analysis of mRNA-miRNA-lncRNA ceRNA Network in Human HR+/Her-2- Breast Cancer and Triple Negative Breast Cancer. J Comput Biol 2019; 27:1055-1066. [PMID: 31647320 DOI: 10.1089/cmb.2019.0152] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Breast cancer is a heterogeneous disease highly diverse in different subtypes, including hormone receptor positive and hormone receptor negative subtypes with variable malignancy, therapy regimen, and different prognosis. In this study, we develop a hormone receptor-specific mRNA-miRNA-lncRNA ceRNA network to identify whether several RNAs play fundamental roles in development and metastasis of breast cancer. To understand the association of ceRNA expression profiles in different breast cancer subgroups, the expression profiles and clinical information of 428 HR+/Her-2- breast cancer samples and 113 triple negative breast cancer samples were downloaded from The Cancer Genome Atlas database (TCGA). We comprehensively integrated and compared expression profiles of mRNAs, miRNAs, and lncRNAs between the two subgroups mentioned. Aberrantly expressed hormone receptor specific RNAs were identified, whereas lncRNA-miRNA interactions predicted by miRcode and miRNA-targeted mRNA interactions were validated by miRTarBase, Targetscan, and miRDB database. In this study, mRNA-miRNA-lncRNA ceRNA network was constructed that consisted of 44 miRNA-lncRNA interaction pairs and 2 miRNA-mRNA interaction pairs, and visualized by Cytoscape software. Prognostic markers of HR-specific subtype of breast cancer associated with overall survival were identified by Kaplan-Meier survival analysis. Finally, SFRP1, AC006449.1, and MUC2 were novel clinical predictors that may also provide a new therapeutic target in the future.
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Affiliation(s)
- Xiaochen Jia
- Department of Breast Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center for Cancer; Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, People's Republic of China
| | - Yehui Shi
- Department of Breast Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center for Cancer; Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, People's Republic of China
| | - Yuehong Zhu
- Department of Breast Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center for Cancer; Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, People's Republic of China
| | - Wenjing Meng
- Department of Breast Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center for Cancer; Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, People's Republic of China
| | - Lihong He
- Department of Breast Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center for Cancer; Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, People's Republic of China
| | - Yongsheng Jia
- Department of Breast Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center for Cancer; Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, People's Republic of China
| | - Zhongsheng Tong
- Department of Breast Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center for Cancer; Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin, People's Republic of China
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10
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Sharma N, Pasala MS, Prakash A. Mitochondrial DNA: Epigenetics and environment. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2019; 60:668-682. [PMID: 31335990 PMCID: PMC6941438 DOI: 10.1002/em.22319] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 07/08/2019] [Accepted: 07/11/2019] [Indexed: 05/22/2023]
Abstract
Maintenance of the mitochondrial genome is essential for proper cellular function. For this purpose, mitochondrial DNA (mtDNA) needs to be faithfully replicated, transcribed, translated, and repaired in the face of constant onslaught from endogenous and environmental agents. Although only 13 polypeptides are encoded within mtDNA, the mitochondrial proteome comprises over 1500 proteins that are encoded by nuclear genes and translocated to the mitochondria for the purpose of maintaining mitochondrial function. Regulation of mtDNA and mitochondrial proteins by epigenetic changes and post-translational modifications facilitate crosstalk between the nucleus and the mitochondria and ultimately lead to the maintenance of cellular health and homeostasis. DNA methyl transferases have been identified in the mitochondria implicating that methylation occurs within this organelle; however, the extent to which mtDNA is methylated has been debated for many years. Mechanisms of demethylation within this organelle have also been postulated, but the exact mechanisms and their outcomes is still an active area of research. Mitochondrial dysfunction in the form of altered gene expression and ATP production, resulting from epigenetic changes, can lead to various conditions including aging-related neurodegenerative disorders, altered metabolism, changes in circadian rhythm, and cancer. Here, we provide an overview of the epigenetic regulation of mtDNA via methylation, long and short noncoding RNAs, and post-translational modifications of nucleoid proteins (as mitochondria lack histones). We also highlight the influence of xenobiotics such as airborne environmental pollutants, contamination from heavy metals, and therapeutic drugs on mtDNA methylation. Environ. Mol. Mutagen., 60:668-682, 2019. © 2019 Wiley Periodicals, Inc.
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11
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Sun Y, Sun H. Retracted
:Propofol exerts anticancer activity on hepatocellular carcinoma cells by raising lncRNA DGCR5. J Cell Physiol 2019; 235:2963-2972. [DOI: 10.1002/jcp.29202] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 09/03/2019] [Indexed: 01/01/2023]
Affiliation(s)
- Yan Sun
- Department of Anesthesiology China‐Japan Union Hospital of Jilin University Changchun China
| | - Hai Sun
- Department of Anesthesiology China‐Japan Union Hospital of Jilin University Changchun China
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12
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Xie SP, Zhou F, Li J, Duan SJ. NEAT1 regulates MPP +-induced neuronal injury by targeting miR-124 in neuroblastoma cells. Neurosci Lett 2019; 708:134340. [PMID: 31228597 DOI: 10.1016/j.neulet.2019.134340] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 06/11/2019] [Accepted: 06/18/2019] [Indexed: 12/21/2022]
Abstract
Long non-coding RNAs (lncRNAs) have been reported to play important roles in Parkinson's disease (PD) pathogenesis. It was indicated that lncRNA nuclear enriched abundant transcript 1 (NEAT1) is involved in PD. However, the underlying mechanism of NEAT1 is still not fully explored. Human neuroblastoma cell line SH-SY5Y was treated with 1-Methyl-4-phenylpyridinium (MPP+) to mimic PD model in vitro. qRT-PCR was employed to detect the expression of NEAT1, IL-1β, IL-6 and TNF-α. Starbase database, RNA pull-down assay and RNA immunoprecipitation (RIP) assay were performed to verify the relationship between NEAT1 and miR-124. MTT assay and flow cytometry assay were used to detect cell viability and apoptosis. Elisa was introduced to measure the levels of IL-1β, IL6 and TNF-α in culture media. We found that NEAT1 expression was significantly increased in SH-SY5Y cells after MPP+ treatment in dose- and time- dependent manners. MPP+ induced the expression and secretion of IL-1β, IL-6 and TNF-α, inhibited cell viability and induced apoptosis while these effects could be rescued by NEAT1 silencing. miR-124 was a target of NEAT1. Anti-miR-124 could reverse the effects caused by NEAT1 knockdown in MPP+ treated SH-SY5Y cells. Therefore, we speculated that NEAT1 may regulate MPP+ induced neuronal injury by targeting miR-124 in SH-SY5Y cells.
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Affiliation(s)
- San-Ping Xie
- Department of Neurology, Jingzhou Central Hospital, Jingzhou, Hubei, China
| | - Fan Zhou
- Department of Neurology, Jingzhou Central Hospital, Jingzhou, Hubei, China.
| | - Juan Li
- Department of Neurology, Jingzhou Central Hospital, Jingzhou, Hubei, China
| | - Shu-Jie Duan
- Department of Neurology, Jingzhou Central Hospital, Jingzhou, Hubei, China
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13
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Mongelli A, Martelli F, Farsetti A, Gaetano C. The Dark That Matters: Long Non-coding RNAs as Master Regulators of Cellular Metabolism in Non-communicable Diseases. Front Physiol 2019; 10:369. [PMID: 31191327 PMCID: PMC6539782 DOI: 10.3389/fphys.2019.00369] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 03/18/2019] [Indexed: 12/17/2022] Open
Abstract
Non-coding RNAs are pivotal for many cellular functions, such as splicing, gene regulation, chromosome structure, and hormone-like activity. Here, we will report about the biology and the general molecular mechanisms associated with long non-coding RNAs (lncRNAs), a class of >200 nucleotides-long ribonucleic acid sequences, and their role in chronic non-transmissible diseases. In particular, we will summarize knowledge about some of the best-characterized lncRNAs, such as H19 and MALAT1, and how they regulate carbohydrate and lipid metabolism as well as protein synthesis and degradation. Evidence is discussed about how lncRNAs expression might affect cellular and organismal metabolism and whether their modulation could provide ground for the development of innovative treatments.
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Affiliation(s)
| | - Fabio Martelli
- Molecular Cardiology Laboratory, IRCCS Policlinico San Donato, Milan, Italy
| | - Antonella Farsetti
- Institute of Cell Biology and Neurobiology, National Research Council, Università Cattolica di Roma, Rome, Italy
| | - Carlo Gaetano
- Laboratory of Epigenetics, ICS Maugeri S.p.A., Pavia, Italy
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14
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Zheng L, Hu N, Zhou X. TCF3-activated LINC00152 exerts oncogenic role in osteosarcoma through regulating miR-1182/CDK14 axis. Pathol Res Pract 2019; 215:373-380. [DOI: 10.1016/j.prp.2018.12.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 12/06/2018] [Accepted: 12/25/2018] [Indexed: 10/27/2022]
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15
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Laham-Karam N, Laitinen P, Turunen TA, Ylä-Herttuala S. Activating the Chromatin by Noncoding RNAs. Antioxid Redox Signal 2018; 29:813-831. [PMID: 28699365 DOI: 10.1089/ars.2017.7248] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
SIGNIFICANCE The extent and breadth of transcription have recently been uncovered and this has revealed an extensive array of noncoding RNAs (ncRNAs). The biological role and significance of these ncRNAs have been realized and to date it appears that ncRNAs may have many important regulatory functions. ncRNAs are multifaceted and they induce a complexity of different types of transcriptional and posttranscriptional regulation, including gene activation. Recent Advances: Association of ncRNAs with gene activation is an important finding. Not only enhancer RNA (eRNA) but other types of ncRNAs, including small RNA (sRNA), long-noncoding RNA (lncRNA), microRNA (miRNA), and PIWI-associated RNA (piRNA), have also been implicated in gene activation. Interestingly, they often coincide with histone modifications that favor an open chromatin. In addition, these ncRNAs can recruit key factors important for transcription, including RNA polymerase II. They may directly bind the genomic DNA or act as scaffolds; alternatively, they may loop the chromatin to enhance transcription. CRITICAL ISSUES Although the role of small activating (sa)RNAs has been considerably studied, the roles of miRNAs and piRNAs in gene activation still need to be substantiated and issues of specificity require further studies. FUTURE DIRECTIONS The ncRNA field is coming out of its infancy and we are gaining a global picture of the importance of ncRNAs. However, detailed mechanisms of action of the different ncRNAs are still to be determined. This may reveal novel ways of transcriptional regulation, which will facilitate our ability to utilize these regulatory pathways for research and therapeutic purposes. Antioxid. Redox Signal. 29, 813-831.
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Affiliation(s)
- Nihay Laham-Karam
- 1 A.I. Virtanen Institute, University of Eastern Finland , Kuopio, Finland
| | - Pia Laitinen
- 1 A.I. Virtanen Institute, University of Eastern Finland , Kuopio, Finland
| | - Tiia A Turunen
- 1 A.I. Virtanen Institute, University of Eastern Finland , Kuopio, Finland
| | - Seppo Ylä-Herttuala
- 1 A.I. Virtanen Institute, University of Eastern Finland , Kuopio, Finland .,2 Heart Center, Kuopio University Hospital , Kuopio, Finland .,3 Gene Therapy Unit, Kuopio University Hospital , Kuopio, Finland
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16
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Autophagy in glioma cells: An identity crisis with a clinical perspective. Cancer Lett 2018; 428:139-146. [PMID: 29709703 DOI: 10.1016/j.canlet.2018.04.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 04/14/2018] [Accepted: 04/20/2018] [Indexed: 01/06/2023]
Abstract
Over the last decade, autophagy has emerged as one of the critical cellular systems that control homeostasis. Besides management of normal homeostatic processes, autophagy can also be induced by tissue damage stress or by rapidly progressing tumors. During tumor progression, autophagy mediates a cellular reaction to the changes inside and outside of cells, which leads to tumor adaptation. Even though the regulation of autophagy seems universal and is a well-described process, its dysregulation and role in glioma progression remain an important topic of investigation. In this review, we summarize recent evidence of autophagy regulation in brain tumor tissues and possible interconnection between signaling pathways that govern cellular responses. This perspective may help to assess the qualitative differences and various outcomes in response to autophagy stimulation.
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17
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Zhou Z, Lin Z, Pang X, Tariq MA, Ao X, Li P, Wang J. Epigenetic regulation of long non-coding RNAs in gastric cancer. Oncotarget 2018; 9:19443-19458. [PMID: 29721215 PMCID: PMC5922409 DOI: 10.18632/oncotarget.23821] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 10/25/2017] [Indexed: 12/14/2022] Open
Abstract
Gastric cancer is one of the most common cancers and is the second leading cause of cancer mortality worldwide. Therefore, it is urgent to explore new molecular biomarkers for early diagnosis, early treatment and prognosis for gastric cancer patients. Recently, increasing evidence has shown that epigenetic changes, such as aberrant DNA methylation, histone modifications, and noncoding RNAs (ncRNAs) expression, play substantial roles in the development and progression of malignancies. Among these changes, long non-coding RNAs (lncRNAs), a novel class of ncRNAs, are emerging as highly versatile actors in a variety of cellular processes by regulating gene expression at the epigenetic level as well as at the transcriptional and post-transcriptional levels. Hundreds of lncRNAs become dysregulated in the various pathological processes of gastric cancer, and multiple lncRNAs have been reported to function as tumor-suppressors or oncogenes, although the underlying mechanisms are still under investigation. Here, we provide an overview of the epigenetic regulation of chromatin and the molecular functions of lncRNAs; we focus on lncRNA-mediated epigenetic regulation of cancer-related gene expression in gastric cancer, as well as discuss the clinical implications of lncRNAs on epigenetic-related cancer treatments, which may contribute helpful approaches for the development of new potential strategies for future diagnosis and therapeutic intervention in human cancers.
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Affiliation(s)
- Zhixia Zhou
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Zhijuan Lin
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Xin Pang
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Muhammad Akram Tariq
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Xiang Ao
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Peifeng Li
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
| | - Jianxun Wang
- Center for Tumor Molecular Biology, Institute for Translational Medicine, Qingdao University, Qingdao 266021, China
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18
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Ye F, Gong Y, Chen X, Yu M, Zuo Z, Pei D, Liu W, Wang Q, Zhou J, Duan L, Zhang L, Li X, Tang T, Huang J. Long noncoding AFAP1-antisense RNA 1 is upregulated and promotes tumorigenesis in gastric cancer. Oncol Lett 2018; 15:7523-7530. [PMID: 29740481 PMCID: PMC5934723 DOI: 10.3892/ol.2018.8266] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 04/28/2017] [Indexed: 12/14/2022] Open
Abstract
Long noncoding RNA serves important roles in gastric cancer (GC). However, the prognostic significance and tumorigenesis effect of AFAP1-antisense RNA 1 (AS1) in GC remain to be clarified. The present study was conducted in order to determine the expression level of AFAP1-AS1 by reverse transcription-quantitative polymerase chain reaction. It was demonstrated that AFAP1-AS1 expression level was higher in GC tissues in comparison with adjacent tissues. By analyzing 66 GC tissue specimens, AFAP1-AS1 expression level was found to be markedly associated with tumor size, clinical stage and differentiation. By performing multivariate Cox regression test, AFAP1-AS1 expression level was confirmed to be an independent factor for poor prognosis in patients with GC. Furthermore, SGC-7901 and BGC-823 cells were used for further investigation following transfection of an AFAP1-AS1 short hairpin RNA lentiviral vector. Knockdown of AFAP1-AS1 significantly inhibited GC cell proliferation, migration and invasion abilities in vitro. Finally, nude mice experiments confirmed that downregulation of AFAP1-AS1 in GC cells suppressed tumor growth in vivo. In conclusion, the results of the present study suggested that AFAP1-AS1 may serve as a valuable prognostic indicator and therapeutic target for GC.
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Affiliation(s)
- Fei Ye
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Yi Gong
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Xiangheng Chen
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Meiying Yu
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Zhongkun Zuo
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Dongni Pei
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Wei Liu
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Qunwei Wang
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Jun Zhou
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Lunxi Duan
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Leiyi Zhang
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Xiaojing Li
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Tenglong Tang
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
| | - Jiangsheng Huang
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, P.R. China
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19
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Qu Y, Zheng S, Kang M, Dong R, Zhou H, Zhao D, Zhao J. Knockdown of long non-coding RNA HOXD-AS1 inhibits the progression of osteosarcoma. Biomed Pharmacother 2018; 98:899-906. [PMID: 29571260 DOI: 10.1016/j.biopha.2018.01.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 12/21/2017] [Accepted: 01/03/2018] [Indexed: 12/18/2022] Open
Abstract
Long non-coding RNA HOXD-AS1 (HOXD-AS1) has recently been shown to be involved in the development and progression of multiple cancers. However, the expression, significance, and biological function of HOXD-AS1 in osteosarcoma (OS) remain unknown. Here, we found that the expression level of HOXD-AS1 was significantly upregulated in OS tissues and cells. Furthermore, high expression of HOXD-AS1 was positively associated with the clinical and pathological characteristics of OS, including tumor stage and lymph node metastasis, and negatively correlated with overall survival rate. in vitro assays confirmed that knockdown of HOXD-AS1 suppressed cell proliferation, colony formation, migration, and invasion, and promoted cell cycle arrest at G1 stage and apoptosis in OS cells. in vivo assays confirmed that knockdown of HOXD-AS1 significantly decreased tumor growth in xenograft mice, and decreased tumor size and weight. Importantly, we also showed that knockdown of HOXD-AS1 significantly reduced signal transducer and activator of transcription 3 and its target protein (CyclinD1, Bcl-2, and MMP-2) expression in vitro and in vivo. Moreover, overexpression of STAT3 could reverse the suppression of proliferation ability induced by sh-HOXD-AS1 in U2OS cells. Collectively, our data indicated that HOXD-AS1 might be an oncogenic long non-coding RNA (lncRNA) and might be a potential attractive therapeutic target for OS.
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Affiliation(s)
- Yang Qu
- Department of Orthopaedics, the Second Hospital of Jilin University, #218 Ziqiang Street, Changchun 130041, China
| | - Shuang Zheng
- Department of Orthopaedics, the Second Hospital of Jilin University, #218 Ziqiang Street, Changchun 130041, China
| | - Mingyang Kang
- Department of Orthopaedics, the Second Hospital of Jilin University, #218 Ziqiang Street, Changchun 130041, China
| | - Rongpeng Dong
- Department of Orthopaedics, the Second Hospital of Jilin University, #218 Ziqiang Street, Changchun 130041, China
| | - Haohan Zhou
- Department of Orthopaedics, the Second Hospital of Jilin University, #218 Ziqiang Street, Changchun 130041, China
| | - Dezhi Zhao
- Department of Orthopaedics, the Second Hospital of Jilin University, #218 Ziqiang Street, Changchun 130041, China
| | - Jianwu Zhao
- Department of Orthopaedics, the Second Hospital of Jilin University, #218 Ziqiang Street, Changchun 130041, China.
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20
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Yan W, Chen ZY, Chen JQ, Chen HM. LncRNA NEAT1 promotes autophagy in MPTP-induced Parkinson's disease through stabilizing PINK1 protein. Biochem Biophys Res Commun 2017; 496:1019-1024. [PMID: 29287722 DOI: 10.1016/j.bbrc.2017.12.149] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 12/24/2017] [Indexed: 11/15/2022]
Abstract
BACKGROUND Long non-coding RNA nuclear paraspeckle assembly transcript 1 (lncRNA NEAT1) was found to be closely related to the pathological changes in brain and nervous system. However, the role of NEAT1 and its potential mechanism in Parkinson's disease (PD) largely remain uncharacterized. METHODS In this study, PD mouse model was established by intraperitoneal injection of MPTP. The numbers of TH + neurons, NEAT1 expression and the level of PINK1, LC3-II, LC3-I protein were assessed in PD mice. SH-SY5Y cells were treated with MPP+ as PD cell model. RNA pull-down assay was used to identify the interaction between NEAT1 and PINK1 in vitro. The endogenous expression of NEAT1 was modified by lentiviral vector carrying interference sequence for NEAT1 in vivo. RESULTS The numbers of TH+ neurons significantly decreased in PD mice compared with the control. The expressions of NEAT1, PINK1 protein and LC3-II/LC3-I level were increased by MPTP in vitro and in vivo. Moreover, NEAT1 positively regulated the protein level of PINK1 through inhibition of PINK1 protein degradation. And NEAT1 mediated the effects of MPP+ on SH-SY5Y cells through stabilization of PINK1 protein. The results of in vivo experiments revealed that NEAT1 knockdown could effectively suppress MPTP-induced autophagy in vivo that alleviated dopaminergic neuronal injury. CONCLUSION LncRNA NEAT1 promoted the MPTP-induced autophagy in PD through stabilization of PINK1 protein.
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Affiliation(s)
- Wang Yan
- Neurological Department of Internal Medicine, Ningbo No. 2 Hospital, Ningbo 315000, China
| | - Zhao-Ying Chen
- Neurological Department of Internal Medicine, Ningbo No. 2 Hospital, Ningbo 315000, China
| | - Jia-Qi Chen
- Neurological Department of Internal Medicine, Ningbo No. 2 Hospital, Ningbo 315000, China
| | - Hui-Min Chen
- Neurological Department of Internal Medicine, Ningbo No. 2 Hospital, Ningbo 315000, China.
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