1
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Ahmadpour ST, Orre C, Bertevello PS, Mirebeau-Prunier D, Dumas JF, Desquiret-Dumas V. Breast Cancer Chemoresistance: Insights into the Regulatory Role of lncRNA. Int J Mol Sci 2023; 24:15897. [PMID: 37958880 PMCID: PMC10650504 DOI: 10.3390/ijms242115897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/26/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023] Open
Abstract
Long noncoding RNAs (lncRNAs) are a subclass of noncoding RNAs composed of more than 200 nucleotides without the ability to encode functional proteins. Given their involvement in critical cellular processes such as gene expression regulation, transcription, and translation, lncRNAs play a significant role in organism homeostasis. Breast cancer (BC) is the second most common cancer worldwide and evidence has shown a relationship between aberrant lncRNA expression and BC development. One of the main obstacles in BC control is multidrug chemoresistance, which is associated with the deregulation of multiple mechanisms such as efflux transporter activity, mitochondrial metabolism reprogramming, and epigenetic regulation as well as apoptosis and autophagy. Studies have shown the involvement of a large number of lncRNAs in the regulation of such pathways. However, the underlying mechanism is not clearly elucidated. In this review, we present the principal mechanisms associated with BC chemoresistance that can be directly or indirectly regulated by lncRNA, highlighting the importance of lncRNA in controlling BC chemoresistance. Understanding these mechanisms in deep detail may interest the clinical outcome of BC patients and could be used as therapeutic targets to overcome BC therapy resistance.
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Affiliation(s)
- Seyedeh Tayebeh Ahmadpour
- Nutrition, Croissance et Cancer, Inserm, UMR1069, Université de Tours, 37032 Tours, France; (P.S.B.); (J.-F.D.)
| | - Charlotte Orre
- Inserm U1083, UMR CNRS 6214, Angers University, 49933 Angers, France; (C.O.); (D.M.-P.)
| | - Priscila Silvana Bertevello
- Nutrition, Croissance et Cancer, Inserm, UMR1069, Université de Tours, 37032 Tours, France; (P.S.B.); (J.-F.D.)
| | | | - Jean-François Dumas
- Nutrition, Croissance et Cancer, Inserm, UMR1069, Université de Tours, 37032 Tours, France; (P.S.B.); (J.-F.D.)
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2
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Raju GSR, Pavitra E, Bandaru SS, Varaprasad GL, Nagaraju GP, Malla RR, Huh YS, Han YK. HOTAIR: a potential metastatic, drug-resistant and prognostic regulator of breast cancer. Mol Cancer 2023; 22:65. [PMID: 36997931 PMCID: PMC10061914 DOI: 10.1186/s12943-023-01765-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 03/14/2023] [Indexed: 04/01/2023] Open
Abstract
HOX transcript antisense intergenic RNA (HOTAIR) is an oncogenic non-coding RNA whose expression is strongly correlated with the tumor grade and prognosis of a variety of carcinomas including breast cancer (BC). HOTAIR regulates various target genes via sponging and epigenetic mechanisms and controls various oncogenic cellular and signaling mechanisms including metastasis and drug resistance. In BC cells, HOTAIR expression is regulated by a variety of transcriptional and epigenetic mechanisms. In this review, we describe the regulatory mechanisms that govern HOTAIR expression during cancer development and explore how HOTAIR drives BC development, metastasis, and drug resistance. In the final section of this review, we focus on the role of HOTAIR in BC management, therapeutic treatment, and prognosis, highlighting its potential therapeutic applications.
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Affiliation(s)
- Ganji Seeta Rama Raju
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul, 04620, Republic of Korea
| | - Eluri Pavitra
- NanoBio High-Tech Materials Research Center, Biological Sciences and Bioengineering, Inha University, Incheon, 22212, Republic of Korea
| | | | - Ganji Lakshmi Varaprasad
- NanoBio High-Tech Materials Research Center, Biological Sciences and Bioengineering, Inha University, Incheon, 22212, Republic of Korea
| | | | - Rama Rao Malla
- Cancer Biology Laboratory, Department of Biochemistry and Bioinformatics, GIS, GITAM (Deemed to be University), Visakhapatnam, Andhra Pradesh, 530045, India.
| | - Yun Suk Huh
- NanoBio High-Tech Materials Research Center, Biological Sciences and Bioengineering, Inha University, Incheon, 22212, Republic of Korea.
| | - Young-Kyu Han
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul, 04620, Republic of Korea.
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3
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Kong W, Yin G, Zheng S, Liu X, Zhu A, Yu P, Zhang J, Shan Y, Ying R, Jin H. Long noncoding RNA (lncRNA) HOTAIR: Pathogenic roles and therapeutic opportunities in gastric cancer. Genes Dis 2022; 9:1269-1280. [PMID: 35873034 PMCID: PMC9293693 DOI: 10.1016/j.gendis.2021.07.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 06/21/2021] [Accepted: 07/06/2021] [Indexed: 01/17/2023] Open
Abstract
Gastric cancer is one of the first malignant cancers in the world and a large number of people die every year due to this disease. Many genetic and epigenetic risk factors have been identified that play a major role in gastric cancer. HOTAIR is an effective epigenetic agent known as long noncoding RNA (lncRNA). HOTAIR has been described to have biological functions in biochemical and cellular processes through interactions with many factors, leading to genomic stability, proliferation, survival, invasion, migration, metastasis, and drug resistance. In the present article, we reviewed the prognostic value of the molecular mechanisms underlying the HOTAIR regulation and its function in the development of Gastric Cancer, whereas elucidation of HOTAIR–protein and HOTAIR–DNA interactions can be helpful in the identification of cancer processes, leading to the development of potential therapeutic strategies.
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Affiliation(s)
- Wencheng Kong
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, PR China
| | - Guang Yin
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, PR China
| | - Sixin Zheng
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, PR China
| | - Xinchun Liu
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, PR China
| | - Akao Zhu
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, PR China
| | - Panpan Yu
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, PR China
| | - Jian Zhang
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, PR China
| | - Yuqiang Shan
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, PR China
| | - Rongchao Ying
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, PR China
| | - Huicheng Jin
- Department of Gastroenterological Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, PR China
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4
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Wang J, Zhao J, Hu P, Gao L, Tian S, He Z. Long Non-coding RNA HOTAIR in Central Nervous System Disorders: New Insights in Pathogenesis, Diagnosis, and Therapeutic Potential. Front Mol Neurosci 2022; 15:949095. [PMID: 35813070 PMCID: PMC9259972 DOI: 10.3389/fnmol.2022.949095] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 06/07/2022] [Indexed: 01/17/2023] Open
Abstract
Central nervous system (CNS) disorders, such as ischemic stroke, neurodegenerative diseases, multiple sclerosis, traumatic brain injury, and corresponding neuropathological changes, often lead to death or long-term disability. Long non-coding RNA (lncRNA) is a class of non-coding RNA with a transcription length over 200 nt and transcriptional regulation. lncRNA is extensively involved in physiological and pathological processes through epigenetic, transcription, and post-transcriptional regulation. Further, dysregulated lncRNA is closely related to the occurrence and development of human diseases, including CNS disorders. HOX Transcript antisense RNA (HOTAIR) is the first discovered lncRNA with trans-transcriptional regulation. Recent studies have shown that HOTAIR may participate in the regulation of the occurrence and development of CNS disorders. In addition, HOTAIR has the potential to become a new biomarker for the diagnosis and prognosis assessment of CNS disorders and even provide a new therapeutic target for CNS disorders. Here, we reviewed the research results of HOTAIR in CNS disorders to provide new insights into the pathogenesis, diagnostic value, and therapeutic target potential of HOTAIR in human CNS disorders.
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Affiliation(s)
- Jialu Wang
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Jiuhan Zhao
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Pan Hu
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Lianbo Gao
- Department of Neurology, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Shen Tian
- Department of Neurology, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Zhenwei He
- Department of Neurology, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
- *Correspondence: Zhenwei He,
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5
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The Mechanisms of lncRNA-Mediated Multidrug Resistance and the Clinical Application Prospects of lncRNAs in Breast Cancer. Cancers (Basel) 2022; 14:cancers14092101. [PMID: 35565231 PMCID: PMC9103444 DOI: 10.3390/cancers14092101] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/05/2022] [Accepted: 04/21/2022] [Indexed: 02/01/2023] Open
Abstract
Simple Summary Multidrug resistance (MDR) is a major cause of breast cancer (BC) chemotherapy failure. Long noncoding RNAs (lncRNAs) have been shown closely related to the chemoresistance of BC. In this work, the mechanisms of lncRNA-mediated MDR in BC were elaborated from eight sections, including apoptosis, autophagy, DNA repair, cell cycle, drug efflux, epithelial-mesenchymal transition, epigenetic modification and the tumor microenvironment. Additionally, we also discuss the clinical significance of lncRNAs, which may be biomarkers for diagnosis, therapy and prognosis. Abstract Breast cancer (BC) is a highly heterogeneous disease and presents a great threat to female health worldwide. Chemotherapy is one of the predominant strategies for the treatment of BC; however, multidrug resistance (MDR) has seriously affected or hindered the effect of chemotherapy. Recently, a growing number of studies have indicated that lncRNAs play vital and varied roles in BC chemoresistance, including apoptosis, autophagy, DNA repair, cell cycle, drug efflux, epithelial-mesenchymal transition (EMT), epigenetic modification and the tumor microenvironment (TME). Although thousands of lncRNAs have been implicated in the chemoresistance of BC, a systematic review of their regulatory mechanisms remains to be performed. In this review, we systematically summarized the mechanisms of MDR and the functions of lncRNAs mediated in the chemoresistance of BC from the latest literature. These findings significantly enhance the current understanding of lncRNAs and suggest that they may be promising prognostic biomarkers for BC patients receiving chemotherapy, as well as therapeutic targets to prevent or reverse chemoresistance.
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Liguori G, Cerrone M, De Chiara A, Tafuto S, de Bellis MT, Botti G, Di Bonito M, Cantile M. The Role of lncRNAs in Rare Tumors with a Focus on HOX Transcript Antisense RNA ( HOTAIR). Int J Mol Sci 2021; 22:ijms221810160. [PMID: 34576322 PMCID: PMC8466298 DOI: 10.3390/ijms221810160] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/17/2021] [Accepted: 09/17/2021] [Indexed: 12/14/2022] Open
Abstract
Rare cancers are identified as those with an annual incidence of fewer than 6 per 100,000 persons and includes both epithelial and stromal tumors from different anatomical areas. The advancement of analytical methods has produced an accurate molecular characterization of most human cancers, suggesting a “molecular classification” that has allowed the establishment of increasingly personalized therapeutic strategies. However, the limited availability of rare cancer samples has resulted in very few therapeutic options for these tumors, often leading to poor prognosis. Long non coding RNAs (lncRNAs) are a class of non-coding RNAs mostly involved in tumor progression and drug response. In particular, the lncRNA HOX transcript antisense RNA (HOTAIR) represents an emergent diagnostic, prognostic and predictive biomarker in many human cancers. The aim of this review is to highlight the role of HOTAIR in rare cancers, proposing it as a new biomarker usable in the management of these tumors.
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Affiliation(s)
- Giuseppina Liguori
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G. Pascale, 80131 Naples, Italy; (G.L.); (M.C.); (A.D.C.); (G.B.); (M.D.B.)
| | - Margherita Cerrone
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G. Pascale, 80131 Naples, Italy; (G.L.); (M.C.); (A.D.C.); (G.B.); (M.D.B.)
| | - Annarosaria De Chiara
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G. Pascale, 80131 Naples, Italy; (G.L.); (M.C.); (A.D.C.); (G.B.); (M.D.B.)
| | - Salvatore Tafuto
- Sarcomas and Rare Tumors Unit, Istituto Nazionale Tumori-Irccs-Fondazione G. Pascale, 80131 Naples, Italy;
| | - Maura Tracey de Bellis
- Rehabilitation Medicine Unit, Istituto Nazionale Tumori-Irccs-Fondazione G. Pascale, 80131 Naples, Italy;
| | - Gerardo Botti
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G. Pascale, 80131 Naples, Italy; (G.L.); (M.C.); (A.D.C.); (G.B.); (M.D.B.)
| | - Maurizio Di Bonito
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G. Pascale, 80131 Naples, Italy; (G.L.); (M.C.); (A.D.C.); (G.B.); (M.D.B.)
| | - Monica Cantile
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G. Pascale, 80131 Naples, Italy; (G.L.); (M.C.); (A.D.C.); (G.B.); (M.D.B.)
- Correspondence: ; Tel.: +39-08159031755; Fax: +39-0815903718
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7
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Shi Y, Huang Q, Kong X, Zhao R, Chen X, Zhai Y, Xiong L. Current Knowledge of Long Non-Coding RNA HOTAIR in Breast Cancer Progression and Its Application. Life (Basel) 2021; 11:life11060483. [PMID: 34073224 PMCID: PMC8230351 DOI: 10.3390/life11060483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/22/2021] [Accepted: 05/23/2021] [Indexed: 01/17/2023] Open
Abstract
Breast cancer is one of the most devastating cancers with high morbidity and mortality in females worldwide. Breast tumorigenesis and further development present great uncertainty and complexity, and efficient therapeutic approaches still lack. Accumulating evidence indicates HOX transcript antisense intergenic RNA (HOTAIR) is dysregulated in cancers and has emerged as a novel hotspot in the field. In breast cancer, aberrant HOTAIR expression is responsible for advanced tumor progression by regulating multifarious signaling pathways. Besides, HOTAIR may act as competitive endogenous RNA to bind to several microRNAs and suppress their expressions, which can subsequently upregulate the levels of targeted downstream messenger RNAs, thereby leading to further cancer progression. In addition, HOTAIR works as a promising biomarker and predictor for breast cancer patients’ diagnosis or outcome prediction. Recently, HOTAIR is potentially considered to be a drug target. Here, we have summarized the induction of HOTAIR in breast cancer and its impacts on cell proliferation, migration, apoptosis, and therapeutic resistance, as well as elucidating the underlying mechanisms. This review aims to provide new insights into investigations between HOTAIR and breast cancer development and inspire new methods for studying the association in depth.
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Affiliation(s)
- Yubo Shi
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China; (Y.S.); (Q.H.); (X.K.); (R.Z.); (X.C.); (Y.Z.)
- Queen Mary School, Nanchang University, Nanchang 330006, China
| | - Qingyun Huang
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China; (Y.S.); (Q.H.); (X.K.); (R.Z.); (X.C.); (Y.Z.)
| | - Xinyu Kong
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China; (Y.S.); (Q.H.); (X.K.); (R.Z.); (X.C.); (Y.Z.)
- Queen Mary School, Nanchang University, Nanchang 330006, China
| | - Ruichen Zhao
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China; (Y.S.); (Q.H.); (X.K.); (R.Z.); (X.C.); (Y.Z.)
- Queen Mary School, Nanchang University, Nanchang 330006, China
| | - Xinyue Chen
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China; (Y.S.); (Q.H.); (X.K.); (R.Z.); (X.C.); (Y.Z.)
- Second Clinical Medical College, Nanchang University, Nanchang 330006, China
| | - Yujia Zhai
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China; (Y.S.); (Q.H.); (X.K.); (R.Z.); (X.C.); (Y.Z.)
- Queen Mary School, Nanchang University, Nanchang 330006, China
| | - Lixia Xiong
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China; (Y.S.); (Q.H.); (X.K.); (R.Z.); (X.C.); (Y.Z.)
- Jiangxi Province Key Laboratory of Tumor Pathogenesis and Molecular Pathology, Nanchang 330006, China
- Correspondence: ; Tel.: +86-791-8636-0556
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Cantile M, Di Bonito M, Tracey De Bellis M, Botti G. Functional Interaction among lncRNA HOTAIR and MicroRNAs in Cancer and Other Human Diseases. Cancers (Basel) 2021; 13:cancers13030570. [PMID: 33540611 PMCID: PMC7867281 DOI: 10.3390/cancers13030570] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/22/2021] [Accepted: 01/28/2021] [Indexed: 02/06/2023] Open
Abstract
Simple Summary This review aimed to describe the contribution of functional interaction between the lncRNA HOTAIR and microRNAs in human diseases, including cancer. HOTAIR/miRNAs complexes interfere with different cellular processes during carcinogenesis, mainly deregulating a series of oncogenic signaling pathways. A great number of ncRNAs-related databases have been established, supported by bioinformatics technologies, to identify the ncRNA-mediated sponge regulatory network. These approaches need experimental validation through cells and animal models studies. The optimization of systems to interfere with HOTAIR/miRNAs interplay could represent a new tool for the definition of diagnostic therapeutics in cancer patients. Abstract LncRNAs are a class of non-coding RNAs mostly involved in regulation of cancer initiation, metastatic progression, and drug resistance, through participation in post-transcription regulatory processes by interacting with different miRNAs. LncRNAs are able to compete with endogenous RNAs by binding and sequestering miRNAs and thereby regulating the expression of their target genes, often represented by oncogenes. The lncRNA HOX transcript antisense RNA (HOTAIR) represents a diagnostic, prognostic, and predictive biomarker in many human cancers, and its functional interaction with miRNAs has been described as crucial in the modulation of different cellular processes during cancer development. The aim of this review is to highlight the relation between lncRNA HOTAIR and different microRNAs in human diseases, discussing the contribution of these functional interactions, especially in cancer development and progression.
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Affiliation(s)
- Monica Cantile
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G.Pascale, 80131 Naples, Italy;
- Correspondence: ; Tel.: +39-081-590-3471; Fax: +39-081-590-3718
| | - Maurizio Di Bonito
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G.Pascale, 80131 Naples, Italy;
| | - Maura Tracey De Bellis
- Scientific Direction, Istituto Nazionale Tumori-Irccs-Fondazione G.Pascale, 80131 Naples, Italy; (M.T.D.B.); (G.B.)
| | - Gerardo Botti
- Scientific Direction, Istituto Nazionale Tumori-Irccs-Fondazione G.Pascale, 80131 Naples, Italy; (M.T.D.B.); (G.B.)
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Toraih EA, El-Wazir A, Ageeli EA, Hussein MH, Eltoukhy MM, Killackey MT, Kandil E, Fawzy MS. Unleash multifunctional role of long noncoding RNAs biomarker panel in breast cancer: a predictor classification model. Epigenomics 2020; 12:1215-1237. [PMID: 32812439 DOI: 10.2217/epi-2019-0291] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Aim: We aimed to explore the circulating expression profile of nine lncRNAs (MALAT1, HOTAIR, PVT1, H19, ROR, GAS5, ANRIL, BANCR, MIAT) in breast cancer (BC) patients relative to normal and risky individuals. Methods: Serum relative expressions of the specified long non-coding RNAs were quantified in 155 consecutive women, using quantitative reverse-transcription PCR. Random Forest (RF) and decision tree were also applied. Results: Significant MALAT1 upregulation and GAS5 downregulation could discriminate risky women from healthy controls. Overexpression of the other genes showed good diagnostic performances. Lower GAS5 levels were associated with metastasis and recurrence. RF model revealed a better performance when combining gene expression patterns with risk factors. Conclusion: The studied panel could be utilized as diagnostic/prognostic biomarkers in BC, providing promising epigenetic-based therapeutic targets.
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Affiliation(s)
- Eman A Toraih
- Department of Histology & Cell Biology, Genetics Unit, Faculty of Medicine, Suez Canal University, Ismailia 41522, Egypt.,Department of Surgery, Tulane University, School of Medicine, New Orleans, LA 70112, USA
| | - Aya El-Wazir
- Department of Histology & Cell Biology, Genetics Unit, Faculty of Medicine, Suez Canal University, Ismailia 41522, Egypt
| | - Essam Al Ageeli
- Department of Clinical Biochemistry (Medical Genetics), Faculty of Medicine, Jazan University, Jazan 82911, Saudi Arabia
| | - Mohammad H Hussein
- Department of Surgery, Tulane University, School of Medicine, New Orleans, LA 70112, USA
| | - Mohamed M Eltoukhy
- College of Computing and Information Technology, Khulais, University of Jeddah, Jeddah 21959, Saudi Arabia.,Department of Computer Science, Faculty of Computers and Informatics, Suez Canal University, Ismailia 41522, Egypt
| | - Mary T Killackey
- Department of Surgery, Tulane University, School of Medicine, New Orleans, LA 70112, USA
| | - Emad Kandil
- Department of Surgery, Division of Endocrine & Oncologic Surgery, Tulane University, School of Medicine, New Orleans, LA 70112, USA
| | - Manal S Fawzy
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Suez Canal University, Ismailia 41522, Egypt.,Department of Biochemistry, Faculty of Medicine, Northern Border University, Arar 1321, Saudi Arabia
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10
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Li M, Alsager JS, Wang Z, Cheng L, Shan B. Epigenetic upregulation of HOXC10 in non-small lung cancer cells. Aging (Albany NY) 2020; 12:16921-16935. [PMID: 32687064 PMCID: PMC7521540 DOI: 10.18632/aging.103597] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 06/13/2020] [Indexed: 01/24/2023]
Abstract
The homeobox genes (HOX) have emerged as a new family of master regulators of development and cancer. In the current study, we examined the expression and function of HOXC10 in human non-small cell lung cancer (NSCLC). We observed increased expression of HOXC10 in the more aggressive human NSCLC cell line NCI-H23 over the well differentiated A549 cells. To elucidate the expression and function of HOXC10 in NSCLC cells, we employed RT-PCR, immunoblotting, methylation-specific PCR, apoptosis assays, and xenograft model. Overexpression of HOXC10 in A549 cells conveyed increased proliferation, reduced apoptosis, and accelerated tumor growth when transplanted into nude mice. In contrast, siRNA-mediated knockdown of HOXC10 in NCI-H23 cells reduced proliferation and increased apoptosis. Our results further indicated that hypomethylation of the CpG island in the HOXC10 promoter was critical to elevated expression of HOXC10 in NSCLC cells. Lastly, we identified a G-quadruplex in the HOXC10 promoter and its G-quadruplex formation was required for elevated expression of HOXC10 in NSCLC cells. Moreover our results suggest that disruption of G-quadruplex formation can silence HOXC10 expression in NSCLC cells. In summary, we report HOXC10 as a novel tumor promoting oncogene in NSCLC cells.
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Affiliation(s)
- Miao Li
- Department of Microbiology and Parasitology, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - John Simon Alsager
- Department of Biomedical Sciences, Elson S. Floyd College of Medicine, Washington State University, Spokane, WA 99202, USA
| | - Zhaokai Wang
- The First Clinical Department of China Medical University, Shenyang, China
| | - Lin Cheng
- The First Clinical Department of China Medical University, Shenyang, China
| | - Bin Shan
- Department of Biomedical Sciences, Elson S. Floyd College of Medicine, Washington State University, Spokane, WA 99202, USA
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11
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Wong KK. DNMT1: A key drug target in triple-negative breast cancer. Semin Cancer Biol 2020; 72:198-213. [PMID: 32461152 DOI: 10.1016/j.semcancer.2020.05.010] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 05/04/2020] [Accepted: 05/18/2020] [Indexed: 02/06/2023]
Abstract
Triple-negative breast cancer (TNBC) is the most aggressive subtype of breast cancer. Altered epigenetics regulation including DNA hypermethylation by DNA methyltransferase 1 (DNMT1) has been implicated as one of the causes of TNBC tumorigenesis. In this review, the oncogenic functions rendered by DNMT1 in TNBCs, and DNMT1 inhibitors targeting TNBC cells are presented and discussed. In summary, DNMT1 expression is associated with poor breast cancer survival, and it is overexpressed in TNBC subtype. The oncogenic roles of DNMT1 in TNBCs include: (1) Repression of estrogen receptor (ER) expression; (2) Promotion of epithelial-mesenchymal transition (EMT) required for metastasis; (3) Induces cellular autophagy and; (4) Promotes the growth of cancer stem cells in TNBCs. DNMT1 confers these phenotypes by hypermethylating the promoter regions of ER, multiple tumor suppressor genes, microRNAs and epithelial markers involved in suppressing EMT. DNMT1 inhibitors exert anti-tumorigenic effects against TNBC cells. This includes the hypomethylating agents azacitidine, decitabine and guadecitabine that might sensitize TNBC patients to immune checkpoint blockade therapy. DNMT1 represents an epigenetic target for TNBC cells destruction as well as to derail their metastatic and aggressive phenotypes.
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Affiliation(s)
- Kah Keng Wong
- Department of Immunology, School of Medical Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia.
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12
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Cantile M, Di Bonito M, Cerrone M, Collina F, De Laurentiis M, Botti G. Long Non-Coding RNA HOTAIR in Breast Cancer Therapy. Cancers (Basel) 2020; 12:cancers12051197. [PMID: 32397382 PMCID: PMC7281113 DOI: 10.3390/cancers12051197] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/05/2020] [Accepted: 05/06/2020] [Indexed: 02/07/2023] Open
Abstract
Breast cancer (BC) is the most common cancer type among women, and morbidity and mortality rates are still very high. Despite new innovative therapeutic approaches for all BC molecular subtypes, the discovery of new molecular biomarkers involved in tumor progression has been fundamental for the implementation of personalized treatment strategies and improvement of patient management. Many experimental studies indicate that long non-coding RNAs (lncRNAs) are strongly involved in BC initiation, metastatic progression, and drug resistance. In particular, aberrant expression of HOX transcript antisense intergenic RNA (HOTAIR) lncRNA plays an important role in BC contributing to its progression and represents a predictor of BC metastasis. For its proven prognostic value, HOTAIR could represent a potential therapeutic target in BC. In the present review, we summarize the role of HOTAIR in cancer progression and drug resistance, in particular in BC, and we illustrate the main approaches for silencing it.
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Affiliation(s)
- Monica Cantile
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G.Pascale, 80131 Naples, Italy; (M.D.B.); (M.C.); (F.C.)
- Correspondence: ; Tel.: +39-0815903471; Fax: +39-0815903718
| | - Maurizio Di Bonito
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G.Pascale, 80131 Naples, Italy; (M.D.B.); (M.C.); (F.C.)
| | - Margherita Cerrone
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G.Pascale, 80131 Naples, Italy; (M.D.B.); (M.C.); (F.C.)
| | - Francesca Collina
- Pathology Unit, Istituto Nazionale Tumori-Irccs-Fondazione G.Pascale, 80131 Naples, Italy; (M.D.B.); (M.C.); (F.C.)
| | | | - Gerardo Botti
- Scientific Direction, Istituto Nazionale Tumori-Irccs-Fondazione G.Pascale, 80131 Naples, Italy;
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13
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Zhang S, Wang B, Xiao H, Dong J, Li Y, Zhu C, Jin Y, Li H, Cui M, Fan S. LncRNA HOTAIR enhances breast cancer radioresistance through facilitating HSPA1A expression via sequestering miR-449b-5p. Thorac Cancer 2020; 11:1801-1816. [PMID: 32374522 PMCID: PMC7327697 DOI: 10.1111/1759-7714.13450] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/04/2020] [Accepted: 04/04/2020] [Indexed: 12/25/2022] Open
Abstract
Background Breast cancer (BRCA) is the leading cause of cancer‐related death in women worldwide. Pre‐ and postoperative radiotherapy play a pivotal role in BRCA treatment but its efficacy remains limited and plagued by the emergence of radiation resistance, which aggravates patient prognosis. The long noncoding RNA (lncRNA)‐implicated mechanisms underlying radiation resistance are rarely reported. The aim of this study was to determine whether lncRNA HOX transcript antisense RNA (HOTAIR) modulated the radiosensitivity of breast cancer through HSPA1A. Methods A Gammacell 40 Exactor was used for irradiation treatment. Bioinformatic tools and luciferase reporter assay were adopted to explore gene expression profile and demonstrate the interactions between lncRNA, miRNA and target mRNA 3′‐untranslated region (3′‐UTR). The expression levels of certain genes were determined by real‐time PCR and western‐blot analyses. in vitro and in vivo functional assays were conducted by cell viability and tumorigenicity assays. Results The levels of oncogenic lncRNA HOTAIR were positively correlated with the malignancy of BRCA but reversely correlated with the radiosensitivity of breast cancer cells. Moreover, the expression levels of HOTAIR were positively associated with those of heat shock protein family A (Hsp70) member 1A (HSPA1A) in clinical BRCA tissues and HOTAIR upregulated HSPA1A at the mRNA and protein levels in irradiated BRCA cells. Mechanistically, miR‐449b‐5p restrained HSPA1A expression through targeting the 3′‐UTR of HSPA1A mRNA, whereas HOTAIR acted as a competing sponge to sequester miR‐449b‐5p and thereby relieved the miR‐449b‐5p‐mediated HSPA1A repression. Functionally, HOTAIR conferred decreased radiosensitivity on BRCA cells, while miR‐449b‐5p overexpression or HSPA1A knockdown abrogated the HOTAIR‐enhanced BRCA growth under the irradiation exposure both in vitro and in vivo. Conclusions LncRNA HOTAIR facilitates the expression of HSPA1A by sequestering miR‐449b‐5p post‐transcriptionally and thereby endows BRCA with radiation resistance. Key points Therapeutically, HOTAIR and HSPA1A may be employed as potential targets for BRCA radiotherapy. Our findings shed new light into the mechanism by which lncRNAs modulate the radiosensitivity of tumors.
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Affiliation(s)
- Shuqin Zhang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Bin Wang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Huiwen Xiao
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Jiali Dong
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Yuan Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Changchun Zhu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Yuxiao Jin
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Hang Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Ming Cui
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Saijun Fan
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
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14
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Abolghasemi M, Tehrani SS, Yousefi T, Karimian A, Mahmoodpoor A, Ghamari A, Jadidi-Niaragh F, Yousefi M, Kafil HS, Bastami M, Edalati M, Eyvazi S, Naghizadeh M, Targhazeh N, Mihanfar A, Yousefi B, Safa A, Majidinia M, Rameshknia V. Critical roles of long noncoding RNAs in breast cancer. J Cell Physiol 2020; 235:5059-5071. [PMID: 31951025 DOI: 10.1002/jcp.29442] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 08/26/2019] [Indexed: 12/22/2022]
Abstract
Breast cancer is a major clinical challenge that affects a wide range of the female population and heavily burdens the health system. In the past few decades, attempts have been made to understand the etiology of breast cancer, possible environmental risk factors, and the genetic predispositions, pathogenesis, and molecular aberrations involved in the process. Studies have shown that breast cancer is a heterogeneous entity; each subtype has its specific set of aberrations in different cell signaling pathways, such as Notch, Wnt/β-catenin, transforming growth factor-β, and mitogen-activated protein kinase pathways. One novel group of molecules that have been shown to be inducted in the regulation of multiple cell signaling pathways is the long noncoding RNAs (lncRNAs). These molecules have important implications in the regulation of multiple signaling pathways by interacting with various genes, affecting the transcription process, and finally, playing roles in posttranslational control of these genes. There is growing evidence that lncRNAs are involved in the process of breast cancer formation by effecting the aforementioned signaling pathways, and that this involvement can have significant diagnostic and prognostic values in clinical contexts. The present review aims to elicit the significance of lncRNAs in the regulation of cell signaling pathways, and the resulting changes in cell survival, proliferation, and invasion, which are the hallmarks of breast cancer.
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Affiliation(s)
- Maryam Abolghasemi
- Cellular and Molecular Biology Research Center, Babol University of Medical Sciences, Babol, Iran.,Student Research Committee, Babol University of medical sciences, Babol, Iran
| | - Sadra S Tehrani
- Department of Clinical Biochemistry, Tehran University of Medical Sciences, Tehran, Iran.,Student Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Tooba Yousefi
- Cellular and Molecular Biology Research Center, Babol University of Medical Sciences, Babol, Iran.,Student Research Committee, Babol University of medical sciences, Babol, Iran
| | - Ansar Karimian
- Cellular and Molecular Biology Research Center, Babol University of Medical Sciences, Babol, Iran.,Student Research Committee, Babol University of medical sciences, Babol, Iran
| | - Ata Mahmoodpoor
- Anesthesiology Research Team, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Aliakbar Ghamari
- Anesthesiology Research Team, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Mehdi Yousefi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein S Kafil
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Milad Bastami
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdi Edalati
- Department of Laboratory Sciences, Paramedical Faculty, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shirin Eyvazi
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohsen Naghizadeh
- Department of Clinical Biochemistry, Tehran University of Medical Sciences, Tehran, Iran.,Student Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Niloufar Targhazeh
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ainaz Mihanfar
- Solid Tumor Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - Bahman Yousefi
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amin Safa
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam
| | - Maryam Majidinia
- Solid Tumor Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - Vahid Rameshknia
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Faculty of Medicine, Islamic Azad University, Tabriz, Iran
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15
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Long Non-Coding RNA: Dual Effects on Breast Cancer Metastasis and Clinical Applications. Cancers (Basel) 2019; 11:cancers11111802. [PMID: 31744046 PMCID: PMC6896003 DOI: 10.3390/cancers11111802] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/10/2019] [Accepted: 11/12/2019] [Indexed: 12/24/2022] Open
Abstract
As a highly heterogeneous malignancy, breast cancer (BC) has become the most significant threat to female health. Distant metastasis and therapy resistance of BC are responsible for most of the cases of mortality and recurrence. Distant metastasis relies on an array of processes, such as cell proliferation, epithelial-to-mesenchymal transition (EMT), mesenchymal-to-epithelial transition (MET), and angiogenesis. Long non-coding RNA (lncRNA) refers to a class of non-coding RNA with a length of over 200 nucleotides. Currently, a rising number of studies have managed to investigate the association between BC and lncRNA. In this study, we summarized how lncRNA has dual effects in BC metastasis by regulating invasion, migration, and distant metastasis of BC cells. We also emphasize that lncRNA has crucial regulatory effects in the stemness and angiogenesis of BC. Clinically, some lncRNAs can regulate chemotherapy sensitivity in BC patients and may function as novel biomarkers to diagnose or predict prognosis for BC patients. The exact impact on clinical relevance deserves further study. This review can be an approach to understanding the dual effects of lncRNAs in BC, thereby linking lncRNAs to quasi-personalized treatment in the future.
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16
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Botti G, Cantile M, Collina F, Cerrone M, Sarno S, Anniciello A, Di Bonito M. Morphological and pathological features of basal-like breast cancer. Transl Cancer Res 2019; 8:S503-S509. [PMID: 35117128 PMCID: PMC8797286 DOI: 10.21037/tcr.2019.06.50] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 06/25/2019] [Indexed: 12/19/2022]
Abstract
Basal-like breast cancer (BLBC) is characterized by high grade, high mitotic indices, presence of central necrotic or fibrotic zones, and lymphocytic infiltrate. Patients presenting with BLBC have a poor prognosis and a short-term disease-free and overall survival. BLBCs may include different histological types of breast cancers but the most common histological type is represented by invasive ductal carcinomas of no special type (IDC-NST). Typical immunohistochemical markers for these tumors are basal-type cytokeratin markers such as CK5/6, CK14, CK17, but several BLBCs also express luminal-type CKs, such as CK8/18, CK19. Different molecular alterations, including BRCA1 dysfunction, p53 mutations, up-regulation of EGFR, inactivation of PTEN and the aberrant expression of many non-coding RNAs molecules are detected in BLBC cells suggesting the possibility of defining new targeted therapeutic strategies for this tumor type.
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Affiliation(s)
- Gerardo Botti
- Scientific Direction, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, Naples, Italy
| | - Monica Cantile
- Pathology Unit, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, Naples, Italy
| | - Francesca Collina
- Pathology Unit, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, Naples, Italy
| | - Margherita Cerrone
- Pathology Unit, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, Naples, Italy
| | - Sabrina Sarno
- Pathology Unit, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, Naples, Italy
| | - Annamaria Anniciello
- Pathology Unit, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, Naples, Italy
| | - Maurizio Di Bonito
- Pathology Unit, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, Naples, Italy
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17
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HOX transcript antisense RNA (HOTAIR) in cancer. Cancer Lett 2019; 454:90-97. [DOI: 10.1016/j.canlet.2019.04.016] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/06/2019] [Accepted: 04/08/2019] [Indexed: 01/17/2023]
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18
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Li Z, Qian J, Li J, Zhu C. Knockdown of lncRNA-HOTAIR downregulates the drug-resistance of breast cancer cells to doxorubicin via the PI3K/AKT/mTOR signaling pathway. Exp Ther Med 2019; 18:435-442. [PMID: 31281438 PMCID: PMC6580102 DOI: 10.3892/etm.2019.7629] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 02/05/2019] [Indexed: 01/06/2023] Open
Abstract
The resistance to chemotherapeutic drugs is a critical feature of breast cancer recurrence and metastasis. Long non-coding RNAs (LncRNAs) serve key roles in tumor drug resistance. LncRNA-HOX transcript antisense RNA (HOTAIR) has been reported to be overexpressed in certain types of cancer and may be closely associated with tumor resistance. The current study aimed to investigate the role of lncRNA-HOTAIR in the regulation of breast cancer resistance to doxorubicin (DOX). A breast cancer cell line (MCF-7) and DOX-resistant breast cancer cell line (DOXR-MCF-7) were utilized in the current study. DOXR-MCF-7 cells were transfected with lncRNA-HOTAIR small interfering RNA (siRNA) and control siRNA. Subsequently, MTT and colony formation assays were performed to assess cell proliferation. Cell apoptosis was also evaluated via flow cytometry. In addition, western blotting and reverse transcription-quantitative polymerase chain reaction were performed to detect the expression of caspase-3, B-cell lymphoma 2, Bcl-2-associated X protein, phosphoinositide 3-kinase (PI3K), protein kinase B (AKT) and mechanistic target of rapamycin (mTOR), and the phosphorylation of PI3K, AKT, and mTOR. The data indicated that lncRNA-HOTAIR silencing decreased cell proliferation and increased apoptosis in MCF-7 and DOXR MCF-7 cells. Furthermore, lncRNA-HOTAIR silencing significantly decreased the phosphorylation of PI3K, AKT and mTOR, indicating that the knockdown of lncRNA-HOTAIR effectively attenuates the resistance of breast cancer cells to DOX by inhibiting the PI3K/AKT/mTOR pathway. In summary, the present study indicated that the knockdown of lncRNA-HOTAIR weakened the resistance of breast cancer cells to DOX via PI3K/AKT/mTOR signaling, suggesting that lncRNA-HOTAIR may be a novel intervention target to reverse DOX-resistance in breast cancer.
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Affiliation(s)
- Zhixiang Li
- Department of Tumor Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
| | - Jun Qian
- Department of Tumor Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
| | - Jing Li
- Department of Tumor Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
| | - Chao Zhu
- Department of Tumor Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
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19
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Temian DC, Pop LA, Irimie AI, Berindan-Neagoe I. The Epigenetics of Triple-Negative and Basal-Like Breast Cancer: Current Knowledge. J Breast Cancer 2018; 21:233-243. [PMID: 30275851 PMCID: PMC6158152 DOI: 10.4048/jbc.2018.21.e41] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 07/06/2018] [Indexed: 12/15/2022] Open
Abstract
Breast cancer has the highest incidence among all malignancies diagnosed in women. Therapies have significantly improved over the years due to extensive molecular and clinical research; in a large number of cases, targeted therapies have provided better prognosis. However, one specific subtype remains elusive to targeted therapies–the triple-negative breast cancer. This immunohistochemically defined subtype is resistant to both endocrine and targeted therapies, leading to its poor prognosis. A field that is of great promise in current cancer research is epigenetics. By studying the epigenetic mechanisms underlying tumorigenesis–DNA methylation, histone modifications, and noncoding RNAs–advances in cancer treatment, diagnosis, and prevention are possible. This review aims to synthesize the epigenetic discoveries that have been made related to the triple-negative breast cancer.
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Affiliation(s)
- Daiana Cosmina Temian
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Faculty of Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Laura Ancuta Pop
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Alexandra Iulia Irimie
- Division of Dental Propaedeutics, Aesthetic, Department of Prosthetic Dentistry and Dental Materials, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ioana Berindan-Neagoe
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.,MedFUTURE Research Center for Advanced Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Department of Functional Genomics and Experimental Pathology, The Oncology Institute "Prof. Dr. I Chiricuta", Cluj-Napoca, Romania
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20
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Botti G, De Chiara A, Di Bonito M, Cerrone M, Malzone MG, Collina F, Cantile M. Noncoding RNAs within the
HOX
gene network in tumor pathogenesis and progression. J Cell Physiol 2018; 234:395-413. [DOI: 10.1002/jcp.27036] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 06/25/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Gerardo Botti
- Department of Support for Oncological Pathways Diagnostic Area, Pathology Unit, Istituto Nazionale Tumori Fondazione “G. Pascale” Napoli Italy
| | - Anna De Chiara
- Department of Support for Oncological Pathways Diagnostic Area, Pathology Unit, Istituto Nazionale Tumori Fondazione “G. Pascale” Napoli Italy
| | - Maurizio Di Bonito
- Department of Support for Oncological Pathways Diagnostic Area, Pathology Unit, Istituto Nazionale Tumori Fondazione “G. Pascale” Napoli Italy
| | - Margherita Cerrone
- Department of Support for Oncological Pathways Diagnostic Area, Pathology Unit, Istituto Nazionale Tumori Fondazione “G. Pascale” Napoli Italy
| | - Maria Gabriella Malzone
- Department of Support for Oncological Pathways Diagnostic Area, Pathology Unit, Istituto Nazionale Tumori Fondazione “G. Pascale” Napoli Italy
| | - Francesca Collina
- Department of Support for Oncological Pathways Diagnostic Area, Pathology Unit, Istituto Nazionale Tumori Fondazione “G. Pascale” Napoli Italy
| | - Monica Cantile
- Department of Support for Oncological Pathways Diagnostic Area, Pathology Unit, Istituto Nazionale Tumori Fondazione “G. Pascale” Napoli Italy
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21
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Han L, Zhang HC, Li L, Li CX, Di X, Qu X. Downregulation of Long Noncoding RNA HOTAIR and EZH2 Induces Apoptosis and Inhibits Proliferation, Invasion, and Migration of Human Breast Cancer Cells. Cancer Biother Radiopharm 2018; 33:241-251. [PMID: 30048163 DOI: 10.1089/cbr.2017.2432] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND The long noncoding RNA HOTAIR (HOX transcript antisense intergenic RNA) has been reported to be a biomarker for various malignant tumors; however, its involvement in breast cancer is not fully understood. The aim of this study was to investigate the effects involved with long noncoding RNA HOTAIR and EZH2 (enhancer of zeste homologue 2) on the processes of proliferation, invasion, migration, and apoptosis of breast cancer cells. MATERIALS AND METHODS The expressions of HOTAIR and EZH2 in both normal human mammary epithelial cell (HBL-100) and breast cancer cell lines (MCF-7, MDA-MB-231, and SKBR-3) were detected by means of reverse transcription-quantitative polymerase chain reaction. The MCF-7 cells that exhibited the highest HOTAIR expressions were selected for further studies and divided into the control, negative control, and small interfering RNA-HOTAIR groups. The proliferation, invasion, migration, and apoptosis of breast cancer cells were evaluated by MTT assay, Scratch test, Transwell assay, and flow cytometry, respectively. The combination of HOTAIR with EZH2 and PTEN was predicted by bioinformation, with a dual-luciferase reporter gene assay providing further verification. RESULTS Initially, lower expressions of HOTAIR and EZH2 in the normal human mammary epithelial cells, while higher expressions in the breast cancer cells of MCF-7, MDA-MB-231, and SKBR-3 were detected. In addition, the downregulation of HOTAIR or silencing of EZH2 was revealed to repress the proliferation, invasion, and migration, while acting to promote the apoptosis of the breast cancer cells. Furthermore, HOTAIR could bind specifically to EZH2 and PTEN, highlighting the capability of HOTAIR to inhibit the expression of PTEN by recruiting EZH2 in breast cancer, while the TCGA database demonstrated the expressions of PTEN were lower in breast cancer cells. CONCLUSIONS The study suggests the higher expressions of HOTAIR and EZH2 among three breast cancer cells. Furthermore, the downregulation of HOTAIR or silencing of EZH2 was noted to inhibit the proliferation, invasion, and migration of breast cancer cells, while promoting their apoptosis.
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Affiliation(s)
- Lu Han
- 1 Department of Thyroid and Breast Surgery, Tianjin 4th Centre Hospital , Tianjin, P.R. China
| | - Hai-Chao Zhang
- 1 Department of Thyroid and Breast Surgery, Tianjin 4th Centre Hospital , Tianjin, P.R. China
| | - Li Li
- 2 Department of General Surgery, Tianjin Haihe Hospital , Tianjin, P.R. China
| | - Cai-Xia Li
- 1 Department of Thyroid and Breast Surgery, Tianjin 4th Centre Hospital , Tianjin, P.R. China
| | - Xu Di
- 1 Department of Thyroid and Breast Surgery, Tianjin 4th Centre Hospital , Tianjin, P.R. China
| | - Xin Qu
- 1 Department of Thyroid and Breast Surgery, Tianjin 4th Centre Hospital , Tianjin, P.R. China
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22
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Abstract
Majority of the human genome is transcribed into RNAs with absent or limited protein-coding potential. microRNAs (miRNAs) and long noncoding RNAs (lncRNAs) are two major families of the non-protein-coding transcripts. miRNAs and lncRNAs can regulate fundamental cellular processes via diverse mechanisms. The expression and function of miRNAs and lncRNAs are tightly regulated in development and physiological homeostasis. Dysregulation of miRNAs and lncRNAs is critical to pathogenesis of human disease. Moreover, recent evidence indicates a cross talk between miRNAs and lncRNAs. Herein we review recent advances in the biology of miRNAs and lncRNAs with respect to the above aspects. We focus on their roles in cancer, respiratory disease, and neurodegenerative disease. The complexity, flexibility, and versatility of the structures and functions of miRNAs and lncRNAs demand integration of experimental and bioinformatics tools to acquire sufficient knowledge for applications of these noncoding RNAs in clinical care.
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Affiliation(s)
- Min Xue
- Xuzhou College of Medicine, Xuzhou, Jiangsu, China
| | - Ying Zhuo
- Kadlec Regional Medical Center, 888 Swift Boulevard, Richland, WA, USA
| | - Bin Shan
- Elson S. Floyd College of Medicine, Washington State University Spokane, 1495, Spokane, WA, 99210-1495, USA.
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23
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Nasrollahzadeh-Khakiani M, Emadi-Baygi M, Schulz WA, Nikpour P. Long noncoding RNAs in gastric cancer carcinogenesis and metastasis. Brief Funct Genomics 2018; 16:129-145. [PMID: 27122631 DOI: 10.1093/bfgp/elw011] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Recent studies of the human transcriptome, most prominently by the ENCyclopedia Of DNA Elements project, have revealed an unexpected number of noncoding RNAs (ncRNAs). Long noncoding RNAs (lncRNAs) are typically referred to a heterogeneous group of polyadenylated long ncRNAs, with a length of > 200 nt. LncRNAs constitute an integral part of tumor biology, with many lncRNAs discovered to be aberrantly expressed in various cancer types. They are involved in many aspects of cancer pathogenesis from its initiation to progression, metastasis and treatment response. Gastric cancer (GC) is the third leading cause of cancer death worldwide. Despite the current improvements of life expectancy and survival rate, most of the patients are diagnosed when their cancer has been progressed to advanced stages. Therefore, unraveling the molecular mechanisms of GC to find early-stage biomarkers is urgent. As the list of lncRNAs with deregulated expression in GC is steadily expanding, these molecules offer a source for developing GC-specific biomarkers. In this review, we will present and discuss those lncRNAs whose expression has been shown to be deregulated in GC.
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24
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Li M, Li X, Zhuang Y, Wang Y, Burow ME, Collins-Burow B, Xue M, Song C, Shan B. Induction of HOXA9 expression in three-dimensional organotypic culture of the Claudin-low breast cancer cells. Oncotarget 2018; 7:51503-51514. [PMID: 27409175 PMCID: PMC5239492 DOI: 10.18632/oncotarget.10491] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 06/29/2016] [Indexed: 01/05/2023] Open
Abstract
The gene expression signatures of the molecular intrinsic subtypes of breast cancer are regulated by epigenetic mechanisms such as methylation of CpG islands in gene promoters. Epigenetic codes can be regulated by the tumor microenvironment. The Claudin-low subtype is associated with triple-negative invasive ductal carcinomas in patients. Herein we explored epigenetic regulation of gene expression in the Claudin-low breast cancer cells by extracellular matrix (ECM), a key component of the tumor microenvironment. We modeled attachment to ECM using laminin rich ECM three-dimensional organotypic culture (lrECM 3D). In 2D and lrECM 3D cultures we examined expression of the homeobox (HOX) genes that epigenetically regulated in development and cancer. We demonstrated induction of the selected HOX genes in lrECM 3D culture of the Claudin-low breast cancer cells MDA-MB-231 and Hs578T. In particular activation of HOXA9 expression in lrECM 3D culture required binding of bromodomain containing 4 to the HOXA9 promoter and involved CpG hypomethylation. Our findings warrant further investigation of the ECM-regulated epigenetic coding of gene expression in the Claudin-low breast cancer.
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Affiliation(s)
- Miao Li
- Department of Microbiology and Parasitology, College of Basic Medical Sciences, China Medical University, Shenyang, China
| | - Xi Li
- Department of Sports Medicine and Joint Surgery, The People's Hospital of Liaoning Province, Shenyang, China
| | - Yan Zhuang
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Yan Wang
- Department of Biological Engineering, Zunyi Medical College Zhuhai Campus, Zhuhai, China
| | - Matthew E Burow
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | | | - Min Xue
- Department of Physiology, Xuzhou Medical College, Xuzhou, China
| | - Chengjie Song
- Department of Physiology, Xuzhou Medical College, Xuzhou, China
| | - Bin Shan
- Department of Biomedical Sciences, Elson S. Floyd College of Medicine, Washington State University Spokane, Spokane, WA, USA
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25
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Lin Y, Guo W, Li N, Fu F, Lin S, Wang C. Polymorphisms of long non-coding RNA HOTAIR with breast cancer susceptibility and clinical outcomes for a southeast Chinese Han population. Oncotarget 2017; 9:3677-3689. [PMID: 29423075 PMCID: PMC5790492 DOI: 10.18632/oncotarget.23343] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 11/17/2017] [Indexed: 01/11/2023] Open
Abstract
Hox transcript antisense intergenic RNA (HOTAIR) is a well-known long non-coding RNA (lncRNA) which participates in tumorigenesis and progress of multiple cancers. However, the associations among polymorphisms on HOTAIR, breast cancer (BC) susceptibility and clinical outcomes have remained obscure. In this case-control study, we assessed the interaction between three lncRNA HOTAIR single nucleotide polymorphisms (SNPs) (rs1899663, rs4759314 and rs7958904) on the risk and clinical outcome of breast cancer in a Chinese Han population. In total, 969 breast cancer cases and 970 healthy controls were enrolled in this study. Associations among genotypes, BC risk and survival were evaluated by univariate and multivariate logistic regression to estimate the odds ratio (OR), hazard ratio (HR) and its 95% confidence interval (CI). The disease-free survival (DFS) and overall survival (OS) was calculated by the Kaplan–Meier method. We found that the T allele of rs1899663 and C allele of rs7958904 both achieved significant differences between cases and controls in the single locus analyses (P = 0.017 and 0.010, respectively). Multivariate analyses also revealed the rs1899663 TT genotype and rs7958904 CC genotype were both at higher risk of breast cancer compared with the GG homozygotes (OR = 2.08, 95% CI = 1.20–3.60 and OR = 1.45, 95% CI = 1.01–2.08, respectively). In survival analysis, we observed that the T allele of rs1899663 presented significant differences for both DFS (HR = 1.64, 95% CI = 1.12–2.40) and OS (HR = 2.10, 95% CI = 1.29–3.42) in younger subjects (age ≤ 40). Our findings may provide new insights into the associations among the genetic susceptibility, the fine classifications and the prognosis of breast cancer. Further studies with larger sample size and functional research should also be conducted to validate our findings and better elucidate the underlying biological mechanisms.
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Affiliation(s)
- Yuxiang Lin
- Department of Breast Surgery, Affiliated Union Hospital of Fujian Medical University, Fuzhou, Fujian Province 350001, China
| | - Wenhui Guo
- Department of Breast Surgery, Affiliated Union Hospital of Fujian Medical University, Fuzhou, Fujian Province 350001, China
| | - Neng Li
- Department of Pathogeny Microbilogy, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian Province 350108, China.,Key Laboratory of Tumor Microbiology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian Province 350108, China
| | - Fangmeng Fu
- Department of Breast Surgery, Affiliated Union Hospital of Fujian Medical University, Fuzhou, Fujian Province 350001, China
| | - Songping Lin
- Department of Breast Surgery, Affiliated Union Hospital of Fujian Medical University, Fuzhou, Fujian Province 350001, China
| | - Chuan Wang
- Department of Breast Surgery, Affiliated Union Hospital of Fujian Medical University, Fuzhou, Fujian Province 350001, China
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26
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Li M, Li X, Zhuang Y, Flemington EK, Lin Z, Shan B. Induction of a novel isoform of the lncRNA HOTAIR in Claudin-low breast cancer cells attached to extracellular matrix. Mol Oncol 2017; 11:1698-1710. [PMID: 28846832 PMCID: PMC5709615 DOI: 10.1002/1878-0261.12133] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 07/27/2017] [Accepted: 08/11/2017] [Indexed: 01/05/2023] Open
Abstract
Elevated overexpression of the lncRNA HOTAIR mediates invasion and metastasis in breast cancer. In an apparent paradox, we observed low expression of HOTAIR in the invasive Claudin‐low MDA‐MB‐231 and Hs578T cells in two‐dimensional culture (2D). However, HOTAIR expression exhibited robust induction in laminin‐rich extracellular matrix‐based three‐dimensional organotypic culture (lrECM 3D) over that in 2D culture. Induction of HOTAIR required intact ECM signaling, namely integrin α2 and SRC kinase activity. Moreover, invasive growth was suppressed by HOTAIR‐specific siRNA. Induction of HOTAIR in lrECM 3D culture resulted from the activation of a novel isoform of HOTAIR (HOTAIR‐N) whose transcription is started from the first intron of the HOXC11 gene. The HOTAIR‐N promoter exhibited increased trimethylation of histone H3 lysine 4, a histone marker of active transcription, and binding of BRD4, a reader of transcriptionally active histone markers. Inhibition of BRD4 substantially reduced the expression of HOTAIR in lrECM 3D culture. In summary, our results indicate that HOTAIR expression is activated by BRD4 binding to a novel HOTAIR‐N promoter in Claudin‐low breast cancer cells that are attached to ECM. Induction of HOTAIR is required for invasive growth of Claudin‐low breast cancer cells in lrECM 3D culture.
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Affiliation(s)
- Miao Li
- Department of Microbiology and Parasitology, College of Basic Medical Sciences, China Medical University, Shenyang, China.,Department of Biomedical Sciences, Elson S. Floyd College of Medicine, Washington State University Spokane, WA, USA
| | - Xi Li
- Department of Biomedical Sciences, Elson S. Floyd College of Medicine, Washington State University Spokane, WA, USA.,Department of Sports Medicine and Joint Surgery, The People's Hospital of Liaoning Province, Shenyang, China
| | - Yan Zhuang
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Erik K Flemington
- Department of Pathology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Zhen Lin
- Department of Pathology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Bin Shan
- Department of Biomedical Sciences, Elson S. Floyd College of Medicine, Washington State University Spokane, WA, USA
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27
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Hassanzarei S, Hashemi M, Sattarifard H, Hashemi SM, Bahari G, Ghavami S. Genetic polymorphisms of HOTAIR gene are associated with the risk of breast cancer in a sample of southeast Iranian population. Tumour Biol 2017; 39:1010428317727539. [DOI: 10.1177/1010428317727539] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Shekoufeh Hassanzarei
- Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mohammad Hashemi
- Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Hedieh Sattarifard
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Seyed Mehdi Hashemi
- Department of Internal Medicine, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Gholamreza Bahari
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Saeid Ghavami
- Department of Human Anatomy and Cell Science, College of Medicine, Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
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28
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Wang Y, Kong D. Retracted
: Knockdown of lncRNA MEG3 inhibits viability, migration, and invasion and promotes apoptosis by sponging miR‐127 in osteosarcoma cell. J Cell Biochem 2017. [DOI: 10.1002/jcb.26230] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yang Wang
- Department of OrthopaedicsChina‐Japan Union Hospital of Jilin UniversityChangchunChina
| | - Daliang Kong
- Department of OrthopaedicsChina‐Japan Union Hospital of Jilin UniversityChangchunChina
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29
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HOTAIR may regulate proliferation, apoptosis, migration and invasion of MCF-7 cells through regulating the P53/Akt/JNK signaling pathway. Biomed Pharmacother 2017; 90:555-561. [PMID: 28407576 DOI: 10.1016/j.biopha.2017.03.054] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 03/15/2017] [Accepted: 03/20/2017] [Indexed: 01/01/2023] Open
Abstract
Breast cancer is a common malignancy, and it is the second leading cause of cancer-related death among women worldwide. The pathogenesis of breast cancer is poorly understood, leading to unsatisfactory efficacy of current anti-PC therapies. The aim of this study is to investigate the role of LncRNA HOTAIR in proliferation, apoptosis, migration and invasion of human breast cancer cell line MCF-7. MCF-7 cells were cultured and transfected with HOTAIR siRNA, and the proliferation rate of cells was determined using MTT and colony-forming assay; moreover, the apoptosis as well as cell cycles were determined using annexin V/propidium iodide staining methods and analyzed using flow cytometery; furthermore, cell scratch and transwell assays have been performed to examine the migration and invasion of MCF-7 cells; Next, cells were collected, and RT-qPCR as well as western blotting assay were performed to examine the expression of P53, MDM2, AKT, JNK, MMP-2 and MMP-9. We discovered that knockdown of HOTAIR induced significant decrease in proliferation and increase in apoptosis of MCF-7 cells, and the cell cycles of HOTAIR siRNA transfected cells have been arrested at G1 phase (p<0.01); moreover, knockdown of HOTAIR lead to marked decrease in the migration and invasion ability of MCF-7 cells; finally, knockdown of HOTAIR induced significant decrease in the expression of P53/Akt/JNK (p<0.01), and significant increase in the expression of P53 in MCF-7 cells (p<0.01). In conclusion, our results proved that HOTAIR may regulate proliferation, apoptosis, migration and invasion of MCF-7 cells through regulating the P53/Akt/JNK signaling pathway.
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30
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Deng H, Zhang J, Shi J, Guo Z, He C, Ding L, Tang JH, Hou Y. Role of long non-coding RNA in tumor drug resistance. Tumour Biol 2016; 37:11623-11631. [PMID: 27380056 DOI: 10.1007/s13277-016-5125-8] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 06/29/2016] [Indexed: 01/06/2023] Open
Abstract
Chemotherapy has been extensively used in tumor treatment, including either systemic or local treatment. Miserably, in many kinds of cancers, chemotherapy is gradually insensitive. The mechanisms of tumor drug resistance have been widely explored, yet have not been fully characterized. With several studies in the development of drug resistance, recent works have highlighted the involvement of non-coding RNAs in tumor development. A growing number of long non-coding RNAs (lncRNAs) have been identified as transcripts of larger than 200 nucleotides in length, which have low coding potential, but potentially coding small peptides with 50-70 amino acids. Despite so often being branded as transcriptional noise, it is becoming increasingly clear that a large number of lncRNAs are crucial molecular regulators of the processes of tumor involving the initiation and progression of human tumor. More recently, accumulating evidence is revealing an important role of lncRNA in tumor drug resistance and lncRNA expression profiling can be correlated with the evolution of tumor drug resistance. The long non-coding-RNA-mediated form of drug resistance brings yet another mechanism of drug resistance. So, exploiting the newly emerging knowledge of lncRNAs for the development of new therapeutic applications to overcome human tumor drug resistance will be significant.
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Affiliation(s)
- Heng Deng
- Graduate School, Anhui University of Traditional Chinese Medicine, HeFei, China.,Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital, Cancer Institute of Jiangsu, 42 Bai Zi Ting Road, Nanjing, Jiangsu, 210000, China.,The People Hospital of SuSong, SuSong, AnHui, China
| | - Jun Zhang
- Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital, Cancer Institute of Jiangsu, 42 Bai Zi Ting Road, Nanjing, Jiangsu, 210000, China.,Surgery of Traditional Chinese Medicine Research Institute, Anhui University of Traditional Chinese Medicine, HeFei, China
| | - JinJun Shi
- The People Hospital of SuSong, SuSong, AnHui, China
| | - ZhengDong Guo
- Graduate School, Xuzhou Medical College, Xuzhou, China
| | - ChunRong He
- The People Hospital of SuSong, SuSong, AnHui, China
| | - Li Ding
- Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital, Cancer Institute of Jiangsu, 42 Bai Zi Ting Road, Nanjing, Jiangsu, 210000, China
| | - Jin Hai Tang
- Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital, Cancer Institute of Jiangsu, 42 Bai Zi Ting Road, Nanjing, Jiangsu, 210000, China.
| | - Yong Hou
- Department of General Surgery, The First Affiliated Hospital of Anhui University of Traditional Chinese Medicine, 139 Mei Shan Road, HeFei, AnHui, 230000, China.
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31
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Milevskiy MJG, Al-Ejeh F, Saunus JM, Northwood KS, Bailey PJ, Betts JA, McCart Reed AE, Nephew KP, Stone A, Gee JMW, Dowhan DH, Dray E, Shewan AM, French JD, Edwards SL, Clark SJ, Lakhani SR, Brown MA. Long-range regulators of the lncRNA HOTAIR enhance its prognostic potential in breast cancer. Hum Mol Genet 2016; 25:3269-3283. [PMID: 27378691 PMCID: PMC5179926 DOI: 10.1093/hmg/ddw177] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 06/05/2016] [Accepted: 06/07/2016] [Indexed: 01/17/2023] Open
Abstract
Predicting response to endocrine therapy and survival in oestrogen receptor positive breast cancer is a significant clinical challenge and novel prognostic biomarkers are needed. Long-range regulators of gene expression are emerging as promising biomarkers and therapeutic targets for human diseases, so we have explored the potential of distal enhancer elements of non-coding RNAs in the prognostication of breast cancer survival. HOTAIR is a long non-coding RNA that is overexpressed, promotes metastasis and is predictive of decreased survival. Here, we describe a long-range transcriptional enhancer of the HOTAIR gene that binds several hormone receptors and associated transcription factors, interacts with the HOTAIR promoter and augments transcription. This enhancer is dependent on Forkhead-Box transcription factors and functionally interacts with a novel alternate HOTAIR promoter. HOTAIR expression is negatively regulated by oestrogen, positively regulated by FOXA1 and FOXM1, and is inversely correlated with oestrogen receptor and directly correlated with FOXM1 in breast tumours. The combination of HOTAIR and FOXM1 enables greater discrimination of endocrine therapy responders and non-responders in patients with oestrogen receptor positive breast cancer. Consistent with this, HOTAIR expression is increased in cell-line models of endocrine resistance. Analysis of breast cancer gene expression data indicates that HOTAIR is co-expressed with FOXA1 and FOXM1 in HER2-enriched tumours, and these factors enhance the prognostic power of HOTAIR in aggressive HER2+ breast tumours. Our study elucidates the transcriptional regulation of HOTAIR, identifies HOTAIR and its regulators as novel biomarkers of patient response to endocrine therapy and corroborates the importance of transcriptional enhancers in cancer.
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Affiliation(s)
- Michael J G Milevskiy
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Fares Al-Ejeh
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Jodi M Saunus
- The University of Queensland, UQ Centre for Clinical Research, Herston, Australia
| | - Korinne S Northwood
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia.,The University of Queensland, UQ Centre for Clinical Research, Herston, Australia
| | - Peter J Bailey
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia.,Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Joshua A Betts
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia.,QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Amy E McCart Reed
- The University of Queensland, UQ Centre for Clinical Research, Herston, Australia
| | | | - Andrew Stone
- Epigenetics Research Laboratory, Division of Genomics and Epigenetics, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Julia M W Gee
- School of Pharmacy & Pharmaceutical Sciences, Cardiff University, Cardiff, UK
| | - Dennis H Dowhan
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Eloise Dray
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia.,Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Australia.,Queensland University of Technology, Brisbane, Australia
| | - Annette M Shewan
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Juliet D French
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia.,QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Stacey L Edwards
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia.,QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Susan J Clark
- Epigenetics Research Laboratory, Division of Genomics and Epigenetics, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Sunil R Lakhani
- The University of Queensland, UQ Centre for Clinical Research, Herston, Australia.,Pathology Queensland, The Royal Brisbane & Women's Hospital, Herston, Australia.,The University of Queensland School of Medicine, Herston, Australia
| | - Melissa A Brown
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
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32
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Wu H, Shang X, Shi Y, Yang Z, Zhao J, Yang M, Li Y, Xu S. Genetic variants of lncRNA HOTAIR and risk of epithelial ovarian cancer among Chinese women. Oncotarget 2016; 7:41047-41052. [PMID: 27166268 PMCID: PMC5173041 DOI: 10.18632/oncotarget.8535] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Accepted: 04/19/2016] [Indexed: 11/25/2022] Open
Abstract
Ovarian cancer is one of the common female malignant tumors globally. However, exactly mechanism of ovarian cancer remained unknown. HOTAIR, a lncRNA in the mammalian HOXC locus, has been fully explored for its genetic variants, expression level and carcinogenesis, development and progression of multiple cancers, except for ovarian cancer. In this study, we hypothesized that abnormal expression of HOTAIR and common variants of HOTAIR are associated with risk of Epithelial ovarian cancer (EOC). We first evaluated the HOTAIR levels in 100 paired tissues of EOC patients and corresponding normal tissues. Results showed that the expression level of HOTAIR in EOC tissues was significantly higher than that in corresponding normal tissues. Then the genotyping analyses of HOTAIR gene was conducted in a Chinese population. The results indicated that rs4759314 and rs7958904 were significantly associated with EOC susceptibility. For rs4759314, the difference between the G allele (as the reference) and the A allele was statistically significant (adjusted OR, 1.34; 95% CI: 1.08–1.65; P = 6.8 × 10−3). For rs7958904, C allele was associated a significantly decreased EOC risk when compared with G allele (OR: 0.77; 95% CI: 0.67–0.89; P = 4.2 × 10−4). The study identified that HOTAIR variants could be a useful biomarker for the predisposition to EOC and for the early diagnosis of the disease.
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Affiliation(s)
- Haijing Wu
- Department of Gynecologic Oncology, Sichuan Cancer Hospital, Chengdu, Sichuan, People's Republic of China
| | - Xiaofei Shang
- Department of Gynecologic Oncology, Sichuan Cancer Hospital, Chengdu, Sichuan, People's Republic of China
| | - Yu Shi
- Department of Gynecologic Oncology, Sichuan Cancer Hospital, Chengdu, Sichuan, People's Republic of China
| | - Zhirong Yang
- Department of Gynecologic Oncology, Sichuan Cancer Hospital, Chengdu, Sichuan, People's Republic of China
| | - Jun Zhao
- Department of Gynecologic Oncology, Sichuan Cancer Hospital, Chengdu, Sichuan, People's Republic of China
| | - Min Yang
- Department of Gynecologic Oncology, Sichuan Cancer Hospital, Chengdu, Sichuan, People's Republic of China
| | - Yan Li
- The First Affiliated Hospital, Nanchang University, Nanchang, People's Republic of China
| | - Shiqiang Xu
- Department of Gynecologic Oncology, Sichuan Cancer Hospital, Chengdu, Sichuan, People's Republic of China
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33
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EZH2 in Bladder Cancer, a Promising Therapeutic Target. Int J Mol Sci 2015; 16:27107-32. [PMID: 26580594 PMCID: PMC4661858 DOI: 10.3390/ijms161126000] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 10/28/2015] [Accepted: 11/02/2015] [Indexed: 01/17/2023] Open
Abstract
Bladder Cancer (BC) represents a current clinical and social challenge. The recent studies aimed to describe the genomic landscape of BC have underscored the relevance of epigenetic alterations in the pathogenesis of these tumors. Among the epigenetic alterations, histone modifications occupied a central role not only in cancer, but also in normal organism homeostasis and development. EZH2 (Enhancer of Zeste Homolog 2) belongs to the Polycomb repressive complex 2 as its catalytic subunit, which through the trimethylation of H3 (Histone 3) on K27 (Lysine 27), produces gene silencing. EZH2 is frequently overexpressed in multiple tumor types, including BC, and plays multiple roles besides the well-recognized histone mark generation. In this review, we summarize the present knowledge on the oncogenic roles of EZH2 and its potential use as a therapeutic target, with special emphasis on BC pathogenesis and management.
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34
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Wang W, Qin JJ, Voruganti S, Nag S, Zhou J, Zhang R. Polycomb Group (PcG) Proteins and Human Cancers: Multifaceted Functions and Therapeutic Implications. Med Res Rev 2015; 35:1220-67. [PMID: 26227500 DOI: 10.1002/med.21358] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Polycomb group (PcG) proteins are transcriptional repressors that regulate several crucial developmental and physiological processes in the cell. More recently, they have been found to play important roles in human carcinogenesis and cancer development and progression. The deregulation and dysfunction of PcG proteins often lead to blocking or inappropriate activation of developmental pathways, enhancing cellular proliferation, inhibiting apoptosis, and increasing the cancer stem cell population. Genetic and molecular investigations of PcG proteins have long been focused on their PcG functions. However, PcG proteins have recently been shown to exert non-classical-Pc-functions, contributing to the regulation of diverse cellular functions. We and others have demonstrated that PcG proteins regulate the expression and function of several oncogenes and tumor suppressor genes in a PcG-independent manner, and PcG proteins are associated with the survival of patients with cancer. In this review, we summarize the recent advances in the research on PcG proteins, including both the Pc-repressive and non-classical-Pc-functions. We specifically focus on the mechanisms by which PcG proteins play roles in cancer initiation, development, and progression. Finally, we discuss the potential value of PcG proteins as molecular biomarkers for the diagnosis and prognosis of cancer, and as molecular targets for cancer therapy.
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Affiliation(s)
- Wei Wang
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106.,Center for Cancer Biology and Therapy, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106
| | - Jiang-Jiang Qin
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106
| | - Sukesh Voruganti
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106
| | - Subhasree Nag
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106
| | - Jianwei Zhou
- Department of Molecular Cell Biology and Toxicology, Cancer Center, School of Public Health, Nanjing Medical University, Nanjing, 210029, P. R. China
| | - Ruiwen Zhang
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106.,Center for Cancer Biology and Therapy, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, 79106
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35
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Loewen G, Jayawickramarajah J, Zhuo Y, Shan B. Functions of lncRNA HOTAIR in lung cancer. J Hematol Oncol 2014; 7:90. [PMID: 25491133 PMCID: PMC4266198 DOI: 10.1186/s13045-014-0090-4] [Citation(s) in RCA: 317] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 11/22/2014] [Indexed: 01/17/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) govern fundamental biochemical and cellular processes. lncRNA HOX transcript antisense RNA (HOTAIR) represses gene expression through recruitment of chromatin modifiers. The expression of HOTAIR is elevated in lung cancer and correlates with metastasis and poor prognosis. Moreover, HOTAIR promotes proliferation, survival, invasion, metastasis, and drug resistance in lung cancer cells. Here we review the molecular mechanisms underlying HOTAIR-mediated aggressive phenotypes of lung cancer. We also discuss HOTAIR’s potential in diagnosis and treatment of lung cancer, as well as the challenges of exploiting HOTAIR for intervention of lung cancer.
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Affiliation(s)
- Gregory Loewen
- Providence Regional Cancer Center, 105 W. 8th Avenue, Spokane, WA, 99204, USA.
| | | | - Ying Zhuo
- Kadlec Regional Medical Center, 888 Swift Boulevard, Richland, WA, 99352, USA.
| | - Bin Shan
- College of Medical Sciences, Washington State University Spokane, 412 E. Spokane Falls Boulevard, Spokane, WA, 99202, USA.
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