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Elimam H, Abdel Mageed SS, Hatawsh A, Moussa R, Radwan AF, Elfar N, Alhamshry NAA, Abd-Elmawla MA, Mohammed OA, Zaki MB, Doghish AS. Unraveling the influence of LncRNA in gastric cancer pathogenesis: a comprehensive review focus on signaling pathways interplay. Med Oncol 2024; 41:218. [PMID: 39103705 DOI: 10.1007/s12032-024-02455-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Accepted: 07/16/2024] [Indexed: 08/07/2024]
Abstract
Gastric cancers (GCs) are among the most common and fatal malignancies in the world. Despite our increasing understanding of the molecular mechanisms underlying GC, further biomarkers are still needed for more in-depth examination, focused prognosis, and treatment. GC is one among the long non-coding RNAs, or lncRNAs, that have emerged as key regulators of the pathophysiology of cancer. This comprehensive review focuses on the diverse functions of long noncoding RNAs (lncRNAs) in the development of GC and their interactions with important intracellular signaling pathways. LncRNAs affect GC-related carcinogenic signaling cascades including pathways for EGFR, PI3K/AKT/mTOR, p53, Wnt/β-catenin, JAK/STAT, Hedgehog, NF-κB, and hypoxia-inducible factor. Dysregulated long non-coding RNA (lncRNA) expression has been associated with multiple characteristics of cancer, such as extended growth, apoptosis resistance, enhanced invasion and metastasis, angiogenesis, and therapy resistance. For instance, lncRNAs such as HOTAIR, MALAT1, and H19 promote the development of GC via altering these pathways. Beyond their main roles, GC lncRNAs exhibit potential as diagnostic and prognostic biomarkers. The overview discusses CRISPR/Cas9 genome-modifying methods, antisense oligonucleotides, small molecules, and RNA interference as potential therapeutic approaches to regulate the expression of long noncoding RNAs (lncRNAs). An in-depth discussion of the intricate functions that lncRNAs play in the development of the majority of stomach malignancies is provided in this review. It provides the groundwork for future translational research in lncRNA-based whole processes toward GC by highlighting their carcinogenic effects, regulatory roles in significant signaling cascades, and practical scientific uses as biomarkers and therapeutic targets.
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Affiliation(s)
- Hanan Elimam
- Department of Biochemistry, Faculty of Pharmacy, University of Sadat City, Sadat City, 32897, Egypt.
| | - Sherif S Abdel Mageed
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, 11829, Cairo, Egypt
| | - Abdulrahman Hatawsh
- Biotechnology School, Nile University, 26th of July Corridor, Sheikh Zayed City, 12588, Giza, Egypt
| | - Rewan Moussa
- Faculty of Medicine, Helwan University, Cairo, 11795, Egypt
| | - Abdullah F Radwan
- Department of Biochemistry, Faculty of Pharmacy, Egyptian Russian University, Badr City, 11829, Cairo, Egypt
| | - Nourhan Elfar
- School of Life and Medical Sciences, University of Hertfordshire Hosted by Global Academic Foundation, New Administrative Capital, 11578, Cairo, Egypt
- Egyptian Drug Authority (EDA), Ministry of Health and Population, Cairo, 11567, Egypt
| | - Nora A A Alhamshry
- Department of Biochemistry, Faculty of Pharmacy, University of Sadat City, Sadat City, 32897, Egypt
| | - Mai A Abd-Elmawla
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Osama A Mohammed
- Department of Pharmacology, College of Medicine, University of Bisha, 61922, Bisha, Saudi Arabia
| | - Mohamed Bakr Zaki
- Department of Biochemistry, Faculty of Pharmacy, University of Sadat City, Sadat City, 32897, Egypt
| | - Ahmed S Doghish
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, 11829, Cairo, Egypt.
- Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, 11231, Cairo, Egypt.
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2
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Tashakori N, Armanfar M, Mashhadi A, Mohammed AT, Karim MM, Hussein AHA, Adil M, Azimi SA, Abedini F. Deciphering the Role of Exosomal Non-Coding RNA (ncRNA) in Drug Resistance of Gastrointestinal Tumors; an Updated Review. Cell Biochem Biophys 2024; 82:609-621. [PMID: 38878101 DOI: 10.1007/s12013-024-01290-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2024] [Indexed: 08/25/2024]
Abstract
One of the most prevalent types of cancer worldwide today is gastric intestinal (GI) tumors. To guarantee their lives, people with a developed GI require palliative care. This covers the application of targeted medicines in addition to chemotherapy treatments including cisplatin, 5-fluorouracil, oxaliplatin, paclitaxel, and pemetrexed. Because of the evidence of drug resistance emerging in poor patient outcomes and prognoses, determining the exact process of medication resistance is motivated. Besides, it is noteworthy that exosomes and noncoding RNAs, like microRNAs and long non-coding RNAs (lncRNAs), produced from tumor cells are implicated in both GI medication resistance and the carcinogenesis and development of GI disease. Biochemical events related to the cell cycle, differentiation of cells, growth, and pluripotency, in addition to gene transcription, splicing, and epigenetics, are all regulated by noncoding RNAs (ncRNAs). Therefore, it should come as a wonder that several ncRNAs have been connected in recent years to drug susceptibility and resistance as well as tumorigenesis. Additionally, through communicating directly with medications, altering the transcriptome of tumor cells, and affecting the immune system, exosomes may govern treatment resistance. Because of this, exosomal lncRNAs often act as a competitive endogenous RNA (ceRNA) of miRNAs to carry out its role in modifying drug resistance. In light of this, we provide an overview of the roles and processes of ncRNA-enriched exosomes in GI medication resistance.
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Affiliation(s)
- Nafiseh Tashakori
- Department of Medicine, Faculty of Internal Medicine, Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Maryam Armanfar
- Department of Internal Medicine, Faculty of Internal Medicine, University of Shahid Beheshti Medical Science, Tehran, Iran
| | - Anahita Mashhadi
- Department of Medical Laboratory Science, Islamic Azad University, Arak branch, Arak, Iran
| | | | - Manal Morad Karim
- Collage of Pharmacy, National University of Science and Technology, Dhi Qar, 64001, Iraq
| | | | - Mohaned Adil
- Pharmacy College, Al-Farahidi University, Baghdad, Iraq
| | - Sajad Ataei Azimi
- Hematology-Oncology, Mashhad University of Medical Science, Mashhad, Iran.
| | - Fatemeh Abedini
- Department of Biology, Science and Art University, Yazd, Iran.
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3
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Jawad SF, Altalbawy FMA, Hussein RM, Fadhil AA, Jawad MA, Zabibah RS, Taraki TY, Mohan CD, Rangappa KS. The strict regulation of HIF-1α by non-coding RNAs: new insight towards proliferation, metastasis, and therapeutic resistance strategies. Cancer Metastasis Rev 2024; 43:5-27. [PMID: 37552389 DOI: 10.1007/s10555-023-10129-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 07/21/2023] [Indexed: 08/09/2023]
Abstract
The hypoxic environment is prominently witnessed in most solid tumors and is associated with the promotion of cell proliferation, epithelial-mesenchymal transition (EMT), angiogenesis, metabolic reprogramming, therapeutic resistance, and metastasis of tumor cells. All the effects are mediated by the expression of a transcription factor hypoxia-inducible factor-1α (HIF-1α). HIF-1α transcriptionally modulates the expression of genes responsible for all the aforementioned functions. The stability of HIF-1α is regulated by many proteins and non-coding RNAs (ncRNAs). In this article, we have critically discussed the crucial role of ncRNAs [such as microRNAs (miRNAs), long non-coding RNAs (lncRNAs), circular RNAs (circRNAs), Piwi-interacting RNAs (piRNAs), and transfer RNA (tRNA)-derived small RNAs (tsRNAs)] in the regulation of stability and expression of HIF-1α. We have comprehensively discussed the molecular mechanisms and relationship of HIF-1α with each type of ncRNA in either promotion or repression of human cancers and therapeutic resistance. We have also elaborated on ncRNAs that are in clinical examination for the treatment of cancers. Overall, the majority of aspects concerning the relationship between HIF-1α and ncRNAs have been discussed in this article.
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Affiliation(s)
- Sabrean Farhan Jawad
- Department of Pharmacy, Al-Mustaqbal University College, Hilla, Babylon, 51001, Iraq
| | - Farag M A Altalbawy
- National Institute of Laser Enhanced Sciences, University of Cairo, Giza, 12613, Egypt
- Department of Chemistry, University College of Duba, University of Tabuk, Tabuk, Saudi Arabia
| | | | - Ali Abdulhussain Fadhil
- College of Medical Technology, Medical Lab Techniques, Al-Farahidi University, Baghdad, Iraq
| | - Mohammed Abed Jawad
- Department of Medical Laboratories Technology, Al-Nisour University College, Baghdad, Iraq
| | - Rahman S Zabibah
- Medical Laboratory Technology Department, College of Medical Technology, The Islamic University, Najaf, Iraq
| | | | - Chakrabhavi Dhananjaya Mohan
- Department of Studies in Molecular Biology, University of Mysore, Manasagangotri, Mysore, 570006, India.
- FEST Division, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, Uttar Pradesh, 226 001, India.
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4
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Zhang Z, Liao Y, Zhao P, Chen X, Liu Y, Wu J, Zuo H. Hypoxia-based critical gene biomarkers as prognostic reporters for gastric adenocarcinoma. ENVIRONMENTAL TOXICOLOGY 2024; 39:1811-1821. [PMID: 38073300 DOI: 10.1002/tox.24064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 11/10/2023] [Accepted: 11/16/2023] [Indexed: 02/08/2024]
Abstract
BACKGROUND Gastric cancer is the most common malignant tumour of the digestive system, yet there is a lack of reported prognostic biomarkers for STAD patients. METHODS Transcriptomic expression data of STAD from GEO database, single cell sequencing data from OMIX gastric cancer database. Conservative molecular typing of gastric cancer was constructed using non-negative matrix factorization (NMF). The abundance of 28 immune cells in the tumour samples was assessed using ssGSEA. The R package "oncoPredict" was used to predict chemotherapy response. TIDE website for immunotherapy response prediction. Finally, single cell analysis was performed to clarify the specific type annotation of STAD cells and to analysis their spatial expression. RESULTS Hypoxia-score demonstrated excellent prognostic discrimination in TCGA gastric cancer samples. Among multiple deconvolution-based algorithms for immune infiltration, Hypoxia-score presented a general immunosuppressive efficacy across multiple datasets, as evidenced by a broad negative correlation with immune cell infiltration. By the likelihood that each group may have specific drug sensitivity to multiple chemotherapeutic and targeted agents. Results showed that high-risk scoring patients were more sensitive to Staurosporine, Sabutoclax, and AZD8055, while low-risk patients were more sensitive to Bortezomib, Dactinomycin, Docetaxel, Daporinad, Sepantronium, and bromide. In the immunotherapy cohort, the Hypoxia-score presented the ability to discriminate for immunotherapy efficacy. The distribution of Hypoxia-score in single-cell descending space was calculated using AddModuleScore and was found to be distributed across the various cell types annotated in the single-cell analysis. It is suggested that various cells in the tumour microenvironment are involved in hypoxia gene set processes to varying degrees. CONCLUSION The Hypoxia-score proves to be a valuable tool for assessing the prognosis of gastric cancer patients and guiding drug treatments, providing significant guidance for clinical diagnosis and treatment in the context of gastric cancer.
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Affiliation(s)
- Zhiya Zhang
- Department of Oncology, The Second People's Hospital of Meishan City, Meishan, Sichuan, China
| | - Yin Liao
- Department of Oncology, The Second People's Hospital of Meishan City, Meishan, Sichuan, China
| | - Peiyou Zhao
- Department of Oncology, The Second People's Hospital of Meishan City, Meishan, Sichuan, China
| | - Xinwei Chen
- Department of Oncology, The Second People's Hospital of Meishan City, Meishan, Sichuan, China
| | - Yunfei Liu
- Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Ji Wu
- Second School of Clinical Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Hongbin Zuo
- Department of General surgery, Wuhan Jiangxia Hospital of TCM (Traditional Chinese Medicine), Wuhan, Hubei, China
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5
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Islam S, Mukherjee C. Molecular regulation of hypoxia through the lenses of noncoding RNAs and epitranscriptome. WILEY INTERDISCIPLINARY REVIEWS. RNA 2023; 14:e1750. [PMID: 35785444 DOI: 10.1002/wrna.1750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 05/27/2022] [Accepted: 06/06/2022] [Indexed: 11/09/2022]
Abstract
Cells maintain homeostasis in response to environmental stress through specific cell stress responses. Hypoxic stress, well known to be associated with diverse solid tumors, is one of the main reasons for cancer-related mortality. Although cells can balance themselves well during hypoxic stress, the underlying molecular mechanisms are not well understood. The enhanced appreciation of diverse roles played by noncoding transcriptome and epigenome in recent years has brought to light the involvement of noncoding RNAs and epigenetic modifiers in hypoxic regulation. The emergence of techniques like deep sequencing has facilitated the identification of large numbers of long noncoding RNAs (lncRNAs) that are differentially regulated in various cancers. Similarly, proteomic studies have identified diverse epigenetic modifiers such as HATs, HDACs, DNMTs, polycomb groups of proteins, and their possible roles in the regulation of hypoxia. The crosstalk between lncRNAs and epigenetic modifiers play a pivotal role in hypoxia-induced cancer initiation and progression. Besides the lncRNAs, several other noncoding RNAs like circular RNAs, miRNAs, and so forth are also expressed during hypoxic conditions. Hypoxia has a profound effect on the expression of noncoding RNAs and epigenetic modifiers. Conversely, noncoding RNAs/epigenetic modifies can regulate the hypoxia signaling axis by modulating the stability of the hypoxia-inducible factors (HIFs). The focus of this review is to illustrate the molecular orchestration underlying hypoxia biology, especially in cancers, which can help in identifying promising therapeutic targets in hypoxia-induced cancers. This article is categorized under: RNA Turnover and Surveillance > Regulation of RNA Stability RNA in Disease and Development > RNA in Disease RNA Structure and Dynamics > RNA Structure, Dynamics and Chemistry.
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Affiliation(s)
- Safirul Islam
- Institute of Health Sciences (erstwhile School of Biotechnology), Presidency University, Kolkata, India
| | - Chandrama Mukherjee
- Institute of Health Sciences (erstwhile School of Biotechnology), Presidency University, Kolkata, India
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6
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Chen Z, Han F, Du Y, Shi H, Zhou W. Hypoxic microenvironment in cancer: molecular mechanisms and therapeutic interventions. Signal Transduct Target Ther 2023; 8:70. [PMID: 36797231 PMCID: PMC9935926 DOI: 10.1038/s41392-023-01332-8] [Citation(s) in RCA: 125] [Impact Index Per Article: 125.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 12/20/2022] [Accepted: 01/18/2023] [Indexed: 02/18/2023] Open
Abstract
Having a hypoxic microenvironment is a common and salient feature of most solid tumors. Hypoxia has a profound effect on the biological behavior and malignant phenotype of cancer cells, mediates the effects of cancer chemotherapy, radiotherapy, and immunotherapy through complex mechanisms, and is closely associated with poor prognosis in various cancer patients. Accumulating studies have demonstrated that through normalization of the tumor vasculature, nanoparticle carriers and biocarriers can effectively increase the oxygen concentration in the tumor microenvironment, improve drug delivery and the efficacy of radiotherapy. They also increase infiltration of innate and adaptive anti-tumor immune cells to enhance the efficacy of immunotherapy. Furthermore, drugs targeting key genes associated with hypoxia, including hypoxia tracers, hypoxia-activated prodrugs, and drugs targeting hypoxia-inducible factors and downstream targets, can be used for visualization and quantitative analysis of tumor hypoxia and antitumor activity. However, the relationship between hypoxia and cancer is an area of research that requires further exploration. Here, we investigated the potential factors in the development of hypoxia in cancer, changes in signaling pathways that occur in cancer cells to adapt to hypoxic environments, the mechanisms of hypoxia-induced cancer immune tolerance, chemotherapeutic tolerance, and enhanced radiation tolerance, as well as the insights and applications of hypoxia in cancer therapy.
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Affiliation(s)
- Zhou Chen
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China.,The First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Fangfang Han
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China.,The First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Yan Du
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Huaqing Shi
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Wence Zhou
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China. .,Lanzhou University Sencond Hospital, Lanzhou, Gansu, China.
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7
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Roshani M, Baniebrahimi G, Mousavi M, Zare N, Sadeghi R, Salarinia R, Sheida A, Molavizadeh D, Sadeghi S, Moammer F, Zolfaghari MR, Mirzaei H. Exosomal long non-coding RNAs: novel molecules in gastrointestinal cancers' progression and diagnosis. Front Oncol 2022; 12:1014949. [PMID: 36591473 PMCID: PMC9795196 DOI: 10.3389/fonc.2022.1014949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 11/10/2022] [Indexed: 12/15/2022] Open
Abstract
Gastrointestinal (GI) cancers arise in the GI tract and accessory organs, including the mouth, esophagus, stomach, liver, biliary tract, pancreas, small intestine, large intestine, and rectum. GI cancers are a major cause of cancer-related morbidity and mortality worldwide. Exosomes act as mediators of cell-to-cell communication, with pleiotropic activity in the regulation of homeostasis, and can be markers for diseases. Non-coding RNAs (ncRNAs), such as long non-coding RNAs (lncRNAs), can be transported by exosomes derived from tumor cells or non-tumor cells. They can be taken by recipient cells to alter their function or remodel the tumor microenvironment. Moreover, due to their uniquely low immunogenicity and excellent stability, exosomes can be used as natural carriers for therapeutic ncRNAs in vivo. Exosomal lncRNAs have a crucial role in regulating several cancer processes, including angiogenesis, proliferation, drug resistance, metastasis, and immunomodulation. Exosomal lncRNA levels frequently alter according to the onset and progression of cancer. Exosomal lncRNAs can therefore be employed as biomarkers for the diagnosis and prognosis of cancer. Exosomal lncRNAs can also monitor the patient's response to chemotherapy while also serving as potential targets for cancer treatment. Here, we discuss the role of exosomal lncRNAs in the biology and possible future treatment of GI cancer.
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Affiliation(s)
- Mohammad Roshani
- Internal Medicine and Gastroenterology, Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Ghazaleh Baniebrahimi
- Department of Pediatric Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahboubeh Mousavi
- Department of Anatomy, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Noushid Zare
- Faculty of Pharmacy, Tehran University of Medical Science, Tehran, Iran
| | - Reza Sadeghi
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Salarinia
- Department of Advanced Technologies, School of Medicine, North Khorasan University of Sciences, Bojnurd, Iran
| | - Amirhossein Sheida
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran,Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Danial Molavizadeh
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran,Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Sara Sadeghi
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran,Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Farzaneh Moammer
- Research Committee, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran,*Correspondence: Farzaneh Moammer, ; Mohammad Reza Zolfaghari, ; Hamed Mirzaei, ;
| | - Mohammad Reza Zolfaghari
- Department of Microbiology, Qom Branch, Islamic Azad University, Qom, Iran,*Correspondence: Farzaneh Moammer, ; Mohammad Reza Zolfaghari, ; Hamed Mirzaei, ;
| | - Hamed Mirzaei
- Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran,*Correspondence: Farzaneh Moammer, ; Mohammad Reza Zolfaghari, ; Hamed Mirzaei, ;
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8
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Feng YN, Li BY, Wang K, Li XX, Zhang L, Dong XZ. Epithelial-mesenchymal transition-related long noncoding RNAs in gastric carcinoma. Front Mol Biosci 2022; 9:977280. [PMCID: PMC9605205 DOI: 10.3389/fmolb.2022.977280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 09/29/2022] [Indexed: 11/13/2022] Open
Abstract
As an evolutionarily phenotypic conversion program, the epithelial-mesenchymal transition (EMT) has been implicated in tumour deterioration and has facilitated the metastatic ability of cancer cells via enhancing migration and invasion. Gastric cancer (GC) remains a frequently diagnosed non-skin malignancy globally. Most GC-associated mortality can be attributed to metastasis. Recent studies have shown that EMT-related long non-coding RNAs (lncRNAs) play a critical role in GC progression and GC cell motility. In addition, lncRNAs are associated with EMT-related transcription factors and signalling pathways. In the present review, we comprehensively described the EMT-inducing lncRNA molecular mechanisms and functional perspectives of EMT-inducing lncRNAs in GC progression. Taken together, the statements of this review provided a clinical implementation in identifying lncRNAs as potential therapeutic targets for advanced GC.
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9
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Regulating the Expression of HIF-1α or lncRNA: Potential Directions for Cancer Therapy. Cells 2022; 11:cells11182811. [PMID: 36139386 PMCID: PMC9496732 DOI: 10.3390/cells11182811] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/27/2022] [Accepted: 09/05/2022] [Indexed: 12/05/2022] Open
Abstract
Previous studies have shown that tumors under a hypoxic environment can induce an important hypoxia-responsive element, hypoxia-induced factor-1α (HIF-1α), which can increase tumor migration, invasion, and metastatic ability by promoting epithelial-to-mesenchymal transition (EMT) in tumor cells. Currently, with the deeper knowledge of long noncoding RNAs (lncRNAs), more and more functions of lncRNAs have been discovered. HIF-1α can regulate hypoxia-responsive lncRNAs under hypoxic conditions, and changes in the expression level of lncRNAs can regulate the production of EMT transcription factors and signaling pathway transduction, thus promoting EMT progress. In conclusion, this review summarizes the regulation of the EMT process by HIF-1α and lncRNAs and discusses their relationship with tumorigenesis. Since HIF-1α plays an important role in tumor progression, we also summarize the current drugs that inhibit tumor progression by modulating HIF-1α.
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10
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HIF in Gastric Cancer: Regulation and Therapeutic Target. Molecules 2022; 27:molecules27154893. [PMID: 35956843 PMCID: PMC9370240 DOI: 10.3390/molecules27154893] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 11/17/2022] Open
Abstract
HIF means hypoxia-inducible factor gene family, and it could regulate various biological processes, including tumor development. In 2021, the FDA approved the new drug Welireg for targeting HIF-2a, and it is mainly used to treat von Hippel-Lindau syndrome, which demonstrated its good prospects in tumor therapy. As the fourth deadliest cancer worldwide, gastric cancer endangers the health of people all across the world. Currently, there are various treatment methods for patients with gastric cancer, but the five-year survival rate of patients with advanced gastric cancer is still not high. Therefore, here we reviewed the regulatory role and target role of HIF in gastric cancer, and provided some references for the treatment of gastric cancer.
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11
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Li Z, Du G, Zhao R, Yang W, Li C, Huang J, Wen Z, Li H, Zhang B. Identification and validation of a hypoxia-related prognostic signature in clear cell renal cell carcinoma patients. Medicine (Baltimore) 2021; 100:e27374. [PMID: 34596153 PMCID: PMC8483867 DOI: 10.1097/md.0000000000027374] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 09/11/2021] [Indexed: 01/05/2023] Open
Abstract
Increasing evidence has shown that hypoxia is closely related to the development, progression, and prognosis of clear cell renal cell carcinoma (ccRCC). Nevertheless, reliable prognostic signatures based on hypoxia have not been well-established. This study aimed to establish a hypoxia-related prognostic signature and construct an optimized nomogram for patients with ccRCC.We accessed hallmark gene sets of hypoxia, including 200 genes, and an original RNA seq dataset of ccRCC cases with integrated clinical information obtained by mining the Cancer Genome Atlas database and the International Cancer Genome Consortium (ICGC) database. Univariate Cox regression analysis and multivariate Cox proportional hazards regression were performed to identify prognostic hub genes and further established prognostic model as well as visualized the nomogram. External validation of the optimized nomogram was performed in independent cohorts from the ICGC database.ANKZF1, ETS1, PLAUR, SERPINE1, FBP1, and PFKP were selected as prognostic hypoxia-related hub genes, and the prognostic model effectively distinguishes high-risk and low-risk patients with ccRCC. The results of receiver operating characteristic curve, risk plots, survival analysis, and independent analysis suggested that RiskScore was a useful tool and independent predictive factor. A novel prognosis nomogram optimized via RiskScore showed its promising performance in both the Cancer Genome Atlas-ccRCC cohort and an ICGC-ccRCC cohort.Our study reveals that the differential expressions of hypoxia-related genes are associated with the overall survival of patients with ccRCC. The prognostic model we established showed a good predictive and discerning ability in ccRCC patients. The novel nomogram optimized via RiskScore exhibited a promising predictive ability. It may be able to serve as a visualized tool for guiding clinical decisions and selecting effective individualized treatments.
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Affiliation(s)
| | - Gang Du
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Rong Zhao
- Guangxi Medical University, Nanning, China
| | | | - Chan Li
- Guangxi Medical University, Nanning, China
| | - Jun Huang
- Guangxi Medical University, Nanning, China
| | | | - Hening Li
- Guangxi Medical University, Nanning, China
| | - Bo Zhang
- Department of Orthopedics Trauma, The Third Affiliated Hospital of Guangxi Medical University, Nanning, China
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12
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Chen H, Pan Y, Jin X, Chen G. Identification of a Four Hypoxia-Associated Long Non-Coding RNA Signature and Establishment of a Nomogram Predicting Prognosis of Clear Cell Renal Cell Carcinoma. Front Oncol 2021; 11:713346. [PMID: 34386428 PMCID: PMC8353455 DOI: 10.3389/fonc.2021.713346] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 07/09/2021] [Indexed: 12/21/2022] Open
Abstract
To identify novel hypoxia-associated long non-coding RNAs (lncRNAs) as potential biomarkers, we developed a risk stratification signature and constructed a prognosis prediction nomogram of clear cell renal cell carcinoma (ccRCC). Hypoxia-related lncRNAs were identified through Pearson correlation analysis between the expression profiles of hypoxia-related differentially expressed genes and lncRNAs from The Cancer Genome Atlas Kidney Renal Clear Cell Carcinoma (TCGA-KIRC) dataset. Then, a signature of four key lncRNAs (COMETT, EMX2OS, AC026462.3, and HAGLR) was developed. The four lncRNAs were downregulated in high-grade, advanced stage, and high-risk ccRCC. The signature had an independent and long-standing prognosis prediction ability up to a 10-year follow-up. Notably, the risk score was significantly positively correlated with the infiltration abundances of six immune cells from the Tumor IMmune Estimation Resource (TIMER). The gene set enrichment analysis (GSEA) also suggested that the signature was involved in metabolism and tumorigenesis, which were closely related to the hypoxic tumor microenvironment. Ultimately, a nomogram of signature, age, stage, and grade, was built to predict the individual long-term survival possibility. Finally, the expressions of four lncRNAs were validated by quantitative real-time PCR (qRT-PCR). Our study identified a four-lncRNA signature and established a prognostic nomogram that reliably predicts survival in ccRCC. The findings may be beneficial to therapeutic customization and medical decision-making.
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Affiliation(s)
- Hualin Chen
- Department of Urology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yang Pan
- Department of Urology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaoxiang Jin
- Department of Urology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Gang Chen
- Department of Urology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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13
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Wu J, Xu S, Li W, Lu Y, Zhou Y, Xie M, Luo Y, Cao Y, He Y, Zeng T, Ling H. lncRNAs as Hallmarks for Individualized Treatment of Gastric Cancer. Anticancer Agents Med Chem 2021; 22:1440-1457. [PMID: 34229588 DOI: 10.2174/1871520621666210706113102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 04/16/2021] [Accepted: 04/18/2021] [Indexed: 11/22/2022]
Abstract
Gastric cancer is global cancer with a high mortality rate. A growing number of studies have found the abnormal expression of lncRNA (long noncoding RNA) in many tumors, which plays a role in promoting or inhibiting cancer. Similarly, lncRNA abnormal expression plays an essential biological function in gastric cancer. This article focuses on lncRNA involvement in the development of gastric cancer in terms of cell cycle disorder, apoptosis inhibition, metabolic remodeling, promotion of tumor inflammation, immune escape, induction of angiogenesis, and epithelial mesenchymal transition (EMT). The involvement of lncRNA in the development of gastric cancer is related to drug resistance, such as cisplatin and multi-drug resistance. It can also be used as a potential marker for the diagnosis and prognosis of gastric cancer and a target for the treatment. With an in-depth understanding of the mechanism of lncRNA in gastric cancer, new ideas for personalized treatment of gastric cancer are expected.
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Affiliation(s)
- Jing Wu
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Shan Xu
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Wei Li
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Yuru Lu
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Yu Zhou
- Shaoyang University, Shaoyang, Hunan 422000, China
| | - Ming Xie
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Yichen Luo
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Yijing Cao
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Yan He
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Tiebing Zeng
- Hunan Province Cooperative innovation Center for Molecular Target New Drug Study [Hunan Provincial Education Department document (Approval number: 2014-405], Hengyang, Hunan 421001, China
| | - Hui Ling
- Key Laboratory of Tumor Cellular & Molecular Pathology (University of South China),College of Hunan Province, Cancer Research Institute, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
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Gui CP, Wei JH, Chen YH, Fu LM, Tang YM, Cao JZ, Chen W, Luo JH. A new thinking: extended application of genomic selection to screen multiomics data for development of novel hypoxia-immune biomarkers and target therapy of clear cell renal cell carcinoma. Brief Bioinform 2021; 22:6273240. [PMID: 34237133 DOI: 10.1093/bib/bbab173] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/30/2021] [Accepted: 04/11/2021] [Indexed: 12/12/2022] Open
Abstract
Increasing evidences show the clinical significance of the interaction between hypoxia and immune in clear cell renal cell carcinoma (ccRCC) microenvironment. However, reliable prognostic signatures based on a combination of hypoxia and immune have not been well established. Moreover, many studies have only used RNA-seq profiles to screen the prognosis feature of ccRCC. Presently, there is no comprehensive analysis of multiomics data to mine a better one. Thus, we try and get it. First, t-SNE and ssGSEA analysis were used to establish tumor subtypes related to hypoxia-immune, and we investigated the hypoxia-immune-related differences in three types of genetic or epigenetic characteristics (gene expression profiles, somatic mutation, and DNA methylation) by analyzing the multiomics data from The Cancer Genome Atlas (TCGA) portal. Additionally, a four-step strategy based on lasso regression and Cox regression was used to construct a satisfying prognostic model, with average 1-year, 3-year and 5-year areas under the curve (AUCs) equal to 0.806, 0.776 and 0.837. Comparing it with other nine known prognostic biomarkers and clinical prognostic scoring algorithms, the multiomics-based signature performs better. Then, we verified the gene expression differences in two external databases (ICGC and SYSU cohorts). Next, eight hub genes were singled out and seven hub genes were validated as prognostic genes in SYSU cohort. Furthermore, it was indicated high-risk patients have a better response for immunotherapy in immunophenoscore (IPS) analysis and TIDE algorithm. Meanwhile, estimated by GDSC and cMAP database, the high-risk patients showed sensitive responses to six chemotherapy drugs and six candidate small-molecule drugs. In summary, the signature can accurately predict the prognosis of ccRCC and may shed light on the development of novel hypoxia-immune biomarkers and target therapy of ccRCC.
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Affiliation(s)
- Cheng-Peng Gui
- First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jin-Huan Wei
- First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yu-Hang Chen
- First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Liang-Min Fu
- First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yi-Ming Tang
- First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jia-Zheng Cao
- Affiliated Jiangmen Hospital, Sun Yat-sen University, Jiangmen, Guangdong, China
| | - Wei Chen
- First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jun-Hang Luo
- First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
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15
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UCA1 Overexpression Promotes Hypoxic Breast Cancer Cell Proliferation and Inhibits Apoptosis via HIF-1 α Activation. JOURNAL OF ONCOLOGY 2021; 2021:5512156. [PMID: 34054950 PMCID: PMC8123984 DOI: 10.1155/2021/5512156] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 04/30/2021] [Indexed: 12/13/2022]
Abstract
The noncoding RNA termed urothelial carcinoma-associated 1 (UCA1) is an oncogenic lncRNA involved in promoting the growth of several tumors through various pathways. The aim of this study was to explore the expression of UCA1 in hypoxic breast cancer and its impact on tumorigenesis in low levels of oxygen. Here, we show that UCA1 is upregulated in a number of hypoxic (1% O2) breast cancer cells. In addition, UCA1 expression is significantly overexpressed in breast cancer tissues compared to matched normal cells. UCA1 knockdown in hypoxia inhibits breast cancer proliferation and induces apoptosis. The knockdown of hypoxia-inducible transcription factor 1α (HIF-1α) but not HIF-2α significantly decreases the expression of UCA1 in hypoxia. Overall, these findings indicate that UCA1 is a hallmark of hypoxic breast cancer and its expression is positively regulated by HIF-1α.
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16
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Zhao Q, Xie J, Xie J, Zhao R, Song C, Wang H, Rong J, Yan L, Song Y, Wang F, Xie Y. Weighted correlation network analysis identifies FN1, COL1A1 and SERPINE1 associated with the progression and prognosis of gastric cancer. Cancer Biomark 2021; 31:59-75. [PMID: 33780362 DOI: 10.3233/cbm-200594] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Gastric cancer (GC) is one of the most deadliest tumours worldwide, and its prognosis remains poor. OBJECTIVE This study aims to identify and validate hub genes associated with the progression and prognosis of GC by constructing a weighted correlation network. METHODS The gene co-expression network was constructed by the WGCNA package based on GC samples and clinical data from the TCGA database. The module of interest that was highly related to clinical traits, including stage, grade and overall survival (OS), was identified. GO and KEGG pathway enrichment analyses were performed using the clusterprofiler package in R. Cytoscape software was used to identify the 10 hub genes. Differential expression and survival analyses were performed on GEPIA web resources and verified by four GEO datasets and our clinical gastric specimens. The receiver operating characteristic (ROC) curves of hub genes were plotted using the pROC package in R. The potential pathogenic mechanisms of hub genes were analysed using gene set enrichment analysis (GSEA) software. RESULTS A total of ten modules were detected, and the magenta module was identified as highly related to OS, stage and grade. Enrichment analysis of magenta module indicated that ECM-receptor interaction, focal adhesion, PI3K-Akt pathway, proteoglycans in cancer were significantly enriched. The PPI network identified ten hub genes, namely COL1A1, COL1A2, FN1, POSTN, THBS2, COL11A1, SPP1, MMP13, COMP, and SERPINE1. Three hub genes (FN1, COL1A1 and SERPINE1) were finally identified to be associated with carcinogenicity and poor prognosis of GC, and all were independent risk factors for GC. The area under the curve (AUC) values of FN1, COL1A1 and SERPINE1 for the prediction of GC were 0.702, 0.917 and 0.812, respectively. GSEA showed that three hub genes share 15 common upregulated biological pathways, including hypoxia, epithelial mesenchymal transition, angiogenesis, and apoptosis. CONCLUSION We identified FN1, COL1A1 and SERPINE1 as being associated with the progression and poor prognosis of GC.
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Affiliation(s)
- Qiaoyun Zhao
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Donghu District, Nanchang, Jiangxi, China.,Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Donghu District, Nanchang, Jiangxi, China
| | - Jun Xie
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Donghu District, Nanchang, Jiangxi, China.,Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Donghu District, Nanchang, Jiangxi, China
| | - Jinliang Xie
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Donghu District, Nanchang, Jiangxi, China
| | - Rulin Zhao
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Donghu District, Nanchang, Jiangxi, China
| | - Conghua Song
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Donghu District, Nanchang, Jiangxi, China
| | - Huan Wang
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Donghu District, Nanchang, Jiangxi, China
| | - Jianfang Rong
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Donghu District, Nanchang, Jiangxi, China
| | - Lili Yan
- Laboratory of Biochemistry and Molecular Biology, Jiangxi Institute of Medical Sciences, Donghu District, Nanchang, Jiangxi, China
| | - Yanping Song
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Donghu District, Nanchang, Jiangxi, China
| | - Fangfei Wang
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Donghu District, Nanchang, Jiangxi, China
| | - Yong Xie
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Donghu District, Nanchang, Jiangxi, China
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17
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Khajehdehi M, Khalaj-Kondori M, Ghasemi T, Jahanghiri B, Damaghi M. Long Noncoding RNAs in Gastrointestinal Cancer: Tumor Suppression Versus Tumor Promotion. Dig Dis Sci 2021; 66:381-397. [PMID: 32185664 DOI: 10.1007/s10620-020-06200-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 03/07/2020] [Indexed: 01/17/2023]
Abstract
Approximately 80% of the human genome harbors biochemical marks of active transcription that its majority transcribes to noncoding RNAs, namely long noncoding RNAs (lncRNAs). LncRNAs are heterogeneous RNA transcripts that regulate critical biological processes such as cell survival and death. They involve in the progression of different cancers by affecting transcriptional and post-transcriptional modifications as well as epigenetic control of numerous tumor suppressors and oncogenes. Recent findings show that aberrant expression of lncRNAs is associated with tumor initiation, progression, invasion, and overall survival of patients with gastrointestinal (GI) cancers. Some lncRNAs play as tumor suppressors in all GI cancers, but others play as tumor promoters. However, some other lncRNAs might function as a tumor suppressor in one GI cancer, but as a tumor promoter in another GI cancer type. This fact highlights possible context dependency of the expression patterns and roles of at least some lncRNAs in GI cancer development and progression. Here, we review the functional relation of lncRNAs involved in the development and progression of GI cancer by focusing on their roles as tumor suppressor and tumor promoter genes.
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Affiliation(s)
- Mina Khajehdehi
- Department of Animal Biology, Faculty of Natural Science, University of Tabriz, Tabriz, Iran
| | - Mohammad Khalaj-Kondori
- Department of Animal Biology, Faculty of Natural Science, University of Tabriz, Tabriz, Iran.
| | - Tayyebeh Ghasemi
- Department of Animal Biology, Faculty of Natural Science, University of Tabriz, Tabriz, Iran
| | - Babak Jahanghiri
- Department of Molecular Medicine, Institute of Medical Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Mehdi Damaghi
- Department of Oncologic Sciences, Morsani College of Medicine, University of South Florida, Tampa, 33612, FL, USA
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Abstract
Long non-coding RNA (lncRNA) plays a contributory role in rheumatoid arthritis (RA). In this review, we summarized the current findings of lncRNAs in RA, including cellular function and the potential mechanisms. Serum lncRNA levels are associated with serum proinflammatory cytokines and disease activity. LncRNAs regulate proliferation, migration, invasion and apoptosis of RA fibroblast-like synoviocytes (FLSs), modulate the differentiation of T lymphocytes and macrophages, and affect bone formation-destruction balance of chondrocytes. Besides, lncRNAs are involved in inflammation and cell motivation signaling pathways. In-depth research on lncRNAs may help elucidate the pathogenesis of RA and provides clues for novel treatment targets.
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Zhu P, He F, Hou Y, Tu G, Li Q, Jin T, Zeng H, Qin Y, Wan X, Qiao Y, Qiu Y, Teng Y, Liu M. A novel hypoxic long noncoding RNA KB-1980E6.3 maintains breast cancer stem cell stemness via interacting with IGF2BP1 to facilitate c-Myc mRNA stability. Oncogene 2021; 40:1609-1627. [PMID: 33469161 PMCID: PMC7932928 DOI: 10.1038/s41388-020-01638-9] [Citation(s) in RCA: 140] [Impact Index Per Article: 46.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 11/13/2020] [Accepted: 12/18/2020] [Indexed: 01/13/2023]
Abstract
The hostile hypoxic microenvironment takes primary responsibility for the rapid expansion of breast cancer tumors. However, the underlying mechanism is not fully understood. Here, using RNA sequencing (RNA-seq) analysis, we identified a hypoxia-induced long noncoding RNA (lncRNA) KB-1980E6.3, which is aberrantly upregulated in clinical breast cancer tissues and closely correlated with poor prognosis of breast cancer patients. The enhanced lncRNA KB-1980E6.3 facilitates breast cancer stem cells (BCSCs) self-renewal and tumorigenesis under hypoxic microenvironment both in vitro and in vivo. Mechanistically, lncRNA KB-1980E6.3 recruited insulin-like growth factor 2 mRNA-binding protein 1 (IGF2BP1) to form a lncRNA KB-1980E6.3/IGF2BP1/c-Myc signaling axis that retained the stability of c-Myc mRNA through increasing binding of IGF2BP1 with m6A-modified c-Myc coding region instability determinant (CRD) mRNA. In conclusion, we confirm that lncRNA KB-1980E6.3 maintains the stemness of BCSCs through lncRNA KB-1980E6.3/IGF2BP1/c-Myc axis and suggest that disrupting this axis might provide a new therapeutic target for refractory hypoxic tumors.
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Affiliation(s)
- Pengpeng Zhu
- Key Laboratory of Laboratory Medical Diagnostics, Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China
| | - Fang He
- Department of pharmacy, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yixuan Hou
- Experimental Teaching Center of Basic Medicine Science, Chongqing Medical University, Chongqing, 400016, China
| | - Gang Tu
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Qiao Li
- Key Laboratory of Laboratory Medical Diagnostics, Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China
| | - Ting Jin
- Key Laboratory of Laboratory Medical Diagnostics, Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China
| | - Huan Zeng
- Key Laboratory of Laboratory Medical Diagnostics, Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China
| | - Yilu Qin
- Key Laboratory of Laboratory Medical Diagnostics, Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China
| | - Xueying Wan
- Key Laboratory of Laboratory Medical Diagnostics, Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China
| | - Yina Qiao
- Key Laboratory of Laboratory Medical Diagnostics, Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China
| | - Yuxiang Qiu
- Key Laboratory of Laboratory Medical Diagnostics, Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China
| | - Yong Teng
- Department of Oral Biology and Dx Sciences, Dental College of Georgia; Georgia Cancer Center, Augusta University, Augusta, GA, 30907, USA
| | - Manran Liu
- Key Laboratory of Laboratory Medical Diagnostics, Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China.
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Wang X, Jiang Z, Yang H, Zhang Y, Xu L. Hypoxia-induced FOXO4/LDHA axis modulates gastric cancer cell glycolysis and progression. Clin Transl Med 2021; 11:e279. [PMID: 33463054 PMCID: PMC7809603 DOI: 10.1002/ctm2.279] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 12/22/2020] [Accepted: 12/28/2020] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND AND AIM We previously identified forkhead box (FOX) O4 mRNA as a predictor in gastric cancer (GC). However, the underlying mechanism has yet to be elucidated. We aimed to illustrate the mechanism by which FOXO4 regulated glycolysis under hypoxia in GC. METHODS FOXO4 protein expression was investigated by immunohistochemical staining of 252 GC and their normal adjacent tissues. We restored or silenced FOXO4 expression in GC cell lines to explore the underlying mechanisms. RESULTS FOXO4 was downregulated in GC. Loss of FOXO4 expression was validated in univariate and multivariate survival analysis as an independent prognostic predictor for overall survival (P < 0.05) and disease-free survival (P<0.05). Restored FOXO4 expression significantly impaired the glycolysis rate in GC cells, while silencing FOXO4 expression enhanced glycolysis rate. FOXO4 expression was inversely associated with maximum standardized uptake value in mice models and patient samples. Mechanistically, FOXO4 bound to the glycolytic enzyme lactate dehydrogenase (LDH)A promoter and inactivated its activity in a dose-dependent manner (P < 0.05). Finally, we determined that FOXO4 was a transcriptional target of hypoxia-inducible factor (HIF) -1α, which is central in response to hypoxia. CONCLUSIONS Our data suggested that FOXO4 plays a key role in the regulation of glycolysis in GC, and disrupting the HIF-1α-FOXO4-LDHA axis might be a promising therapeutic strategy for GC.
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Affiliation(s)
- Xiao‐Hong Wang
- Department of GastroenterologyThe Second Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsuChina
| | - Zhong‐Hua Jiang
- Department of GastroenterologyThe Yancheng Clinical College of Xuzhou Medical UniversityYanchengJiangsuChina
- Department of GastroenterologyThe First People's Hospital of YanchengYanchengJiangsuChina
| | - Hong‐Mei Yang
- Department of GastroenterologyThe Yancheng Clinical College of Xuzhou Medical UniversityYanchengJiangsuChina
- Department of GastroenterologyThe First People's Hospital of YanchengYanchengJiangsuChina
| | - Yu Zhang
- Department of GastroenterologyThe Second Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsuChina
| | - Li‐Hua Xu
- Department of GastroenterologyThe Sixth People's Hospital of NantongNantongJiangsuChina
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Wang X, Zhao D, Xie H, Hu Y. Interplay of long non-coding RNAs and HIF-1α: A new dimension to understanding hypoxia-regulated tumor growth and metastasis. Cancer Lett 2020; 499:49-59. [PMID: 33217445 DOI: 10.1016/j.canlet.2020.11.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 10/11/2020] [Accepted: 11/06/2020] [Indexed: 12/13/2022]
Abstract
Hypoxia is a feature of the solid tumor microenvironment that is associated with poor clinical outcomes in multiple tumor types. Hypoxia-induced factor-1 alpha (HIF-1α) is a master regulator of hypoxic adaption, has been demonstrated to modulate hypoxic gene expression profiling and signaling transduction networks, and is thus a potential therapeutic target. Despite hypoxic response signaling having being extensively studied, the involvement of long non-coding RNAs (lncRNAs) in the hypoxic response has become a new focus of attention. Emerging evidence has documented complex interactions between HIF-1α and lncRNAs, which contribute to the acquisition of multiple hallmarks of cancer. In this review, we focus on recent advances in the study of hypoxia and HIF-1α-regulated lncRNAs, and summarize the molecular mechanisms and functional outcomes of the interplay between lncRNAs and HIF-1α, which may provide important insights into cancer diagnosis and prognosis, enabling better control of cancer.
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Affiliation(s)
- Xingwen Wang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang Provence, 150001, China
| | - Dong Zhao
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang Provence, 150001, China
| | - Hui Xie
- State Key Laboratory of Robotics and Systems, Harbin Institute of Technology, 2 Yikuang, Harbin, 150001, China
| | - Ying Hu
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang Provence, 150001, China; Shenzhen Graduate School of Harbin Institute of Technology, Shenzhen, 518055, China.
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22
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Zhang X, Kang Z, Xie X, Qiao W, Zhang L, Gong Z, Chen Y, Shen W. Silencing of HIF-1α inhibited the expression of lncRNA NEAT1 to suppress development of hepatocellular carcinoma under hypoxia. Am J Transl Res 2020; 12:3871-3883. [PMID: 32774741 PMCID: PMC7407699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 06/02/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND We aimed to explore the relationship between hypoxia-inducible factors-1α (HIF-1α) and lncRNA nuclear-enriched abundant transcript 1 (NEAT1), and their functions on hepatocellular carcinoma (HCC) under hypoxia. METHODS HIF-1α and NEAT1 levels in HCC tissues and corresponding non-tumor tissues were determined by qRT-PCR, and the correlations of their levels in HCC tissues were analyzed by Pearson test. The relationship between overall survival and the two genes (HIF-1α and NEAT1) for HCC patients was detected by log-rank test. Clinicopathological features of NEAT1 in HCC patients were collected. HIF-1α and NEAT1 levels in HCC cells were measured by qRT-PCR and Western blot, and their relationship was determined by co-immunoprecipitation (Co-IP) assay. Cell viability, migration and invasion were detected by CCK-8, scratch wound healing and transwell assay, respectively. The interaction of NEAT1 with HIF-1α in tumor development was determined by xenograft tumor assays in nude mice. RESULTS NEAT1 and HIF-1α were highly expressed and showed a positive relationship in HCC tissues, and specifically, higher NEAT1 expression was positively associated with advanced TNM stage and metastasis in HCC patients. Up-regulated NEAT1 or HIF-1α in HCC patients had poorer prognosis. NEAT1 was induced by HIF-1α and suppressed by siHIF-1α. NEAT1 overexpression further promoted development of HCC under hypoxia while promoting cell viability, migration and invasion and suppressing apoptosis, and such effects were reversed by down-regulating HIF-1α. NEAT1 overexpression promoted tumor growth, which was reversed by down-regulating HIF-1α. CONCLUSION HIF-1α knockdown inhibits NEAT1 expression, which suppresses progression of HCC and improves its prognosis.
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Affiliation(s)
- Xiuming Zhang
- Department of Radiology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical UniversityNanjing, China
| | - Zheng Kang
- Department of Radiology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical UniversityNanjing, China
| | - Xiaodong Xie
- Department of Radiology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical UniversityNanjing, China
| | - Wei Qiao
- Department of Radiology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical UniversityNanjing, China
| | - Lei Zhang
- Department of Radiology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical UniversityNanjing, China
| | - Zhen Gong
- Department of Gynecology, Women’s Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care HospitalNanjing, China
| | - Yan Chen
- Department of Radiology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical UniversityNanjing, China
| | - Wenrong Shen
- Department of Radiology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical UniversityNanjing, China
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Long-Noncoding RNA (lncRNA) in the Regulation of Hypoxia-Inducible Factor (HIF) in Cancer. Noncoding RNA 2020; 6:ncrna6030027. [PMID: 32640630 PMCID: PMC7549355 DOI: 10.3390/ncrna6030027] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/25/2020] [Accepted: 07/03/2020] [Indexed: 02/06/2023] Open
Abstract
Hypoxia is dangerous for oxygen-dependent cells, therefore, physiological adaption to cellular hypoxic conditions is essential. The transcription factor hypoxia-inducible factor (HIF) is the main regulator of hypoxic metabolic adaption reducing oxygen consumption and is regulated by gradual von Hippel-Lindau (VHL)-dependent proteasomal degradation. Beyond physiology, hypoxia is frequently encountered within solid tumors and first drugs are in clinical trials to tackle this pathway in cancer. Besides hypoxia, cancer cells may promote HIF expression under normoxic conditions by altering various upstream regulators, cumulating in HIF upregulation and enhanced glycolysis and angiogenesis, altogether promoting tumor proliferation and progression. Therefore, understanding the underlying molecular mechanisms is crucial to discover potential future therapeutic targets to evolve cancer therapy. Long non-coding RNAs (lncRNA) are a class of non-protein coding RNA molecules with a length of over 200 nucleotides. They participate in cancer development and progression and might act as either oncogenic or tumor suppressive factors. Additionally, a growing body of evidence supports the role of lncRNAs in the hypoxic and normoxic regulation of HIF and its subunits HIF-1α and HIF-2α in cancer. This review provides a comprehensive update and overview of lncRNAs as regulators of HIFs expression and activation and discusses and highlights potential involved pathways.
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Liu Y, Wu J, Huang W, Weng S, Wang B, Chen Y, Wang H. Development and validation of a hypoxia-immune-based microenvironment gene signature for risk stratification in gastric cancer. J Transl Med 2020; 18:201. [PMID: 32410620 PMCID: PMC7226948 DOI: 10.1186/s12967-020-02366-0] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 05/07/2020] [Indexed: 12/23/2022] Open
Abstract
Background Increasing evidences have found that the clinical importance of the interaction between hypoxia and immune status in gastric cancer microenvironment. However, reliable prognostic signatures based on combination of hypoxia and immune status have not been well-established. This study aimed to develop a hypoxia-immune-based gene signature for risk stratification in gastric cancer. Methods Hypoxia and immune status was estimated with transcriptomic profiles for a discovery cohort from GEO database using the t-SNE and ESTIMATE algorithms, respectively. The Cox regression model with the LASSO method was applied to identify prognostic genes and to develop a hypoxia-immune-based gene signature. The TCGA cohort and two independent cohorts from GEO database were used for external validation. Results Low hypoxia status (p < 0.001) and high immune status (p = 0.005) were identified as favorable factors for patients’ overall survival. By using the LASSO model, four genes, including CXCR6, PPP1R14A and TAGLN, were identified to construct a gene signature for risk stratification. In the discovery cohort (n = 357), patients with low risk yielded better outcomes than those with high risk regarding overall survival across and within TNM stage subgroups. Multivariate analysis identified the hypoxia-immune-based gene signature as an independent prognostic factor (p < 0.001). A nomogram integrating the gene signature and known risk factors yielded better performance and net benefits in calibration and decision curve analyses. Similar results were validated in the TCGA (n = 321) and two independent GEO (n = 300 and n = 136, respectively) cohorts. Conclusions The hypoxia-immune-based gene signature represents a promising tool for risk stratification tool in gastric cancer. It might serve as a prognostic classifier for clinical decision-making regarding individualized prognostication and treatment, and follow-up scheduling.
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Affiliation(s)
- Yifan Liu
- The First Department of Gastrointestinal Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China.,Department of General Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jianhua Wu
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Weiwei Huang
- The First Department of Gastrointestinal Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Shaowen Weng
- The First Department of Gastrointestinal Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Baochun Wang
- The First Department of Gastrointestinal Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Yiming Chen
- The First Department of Gastrointestinal Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Hao Wang
- The First Department of Gastrointestinal Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China.
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25
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Kuo TC, Kung HJ, Shih JW. Signaling in and out: long-noncoding RNAs in tumor hypoxia. J Biomed Sci 2020; 27:59. [PMID: 32370770 PMCID: PMC7201962 DOI: 10.1186/s12929-020-00654-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 04/22/2020] [Indexed: 02/07/2023] Open
Abstract
Over the past few years, long non-coding RNAs (lncRNAs) are recognized as key regulators of gene expression at chromatin, transcriptional and posttranscriptional level with pivotal roles in various biological and pathological processes, including cancer. Hypoxia, a common feature of the tumor microenvironment, profoundly affects gene expression and is tightly associated with cancer progression. Upon tumor hypoxia, the central regulator HIF (hypoxia-inducible factor) is upregulated and orchestrates transcription reprogramming, contributing to aggressive phenotypes in numerous cancers. Not surprisingly, lncRNAs are also transcriptional targets of HIF and serve as effectors of hypoxia response. Indeed, the number of hypoxia-associated lncRNAs (HALs) identified has risen sharply, illustrating the expanding roles of lncRNAs in hypoxia signaling cascade and responses. Moreover, through extra-cellular vesicles, lncRNAs could transmit hypoxia responses between cancer cells and the associated microenvironment. Notably, the aberrantly expressed cellular or exosomal HALs can serve as potential prognostic markers and therapeutic targets. In this review, we provide an update of the current knowledge about the expression, involvement and potential clinical impact of lncRNAs in tumor hypoxia, with special focus on their unique molecular regulation of HIF cascade and hypoxia-induced malignant progression.
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Affiliation(s)
- Tse-Chun Kuo
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Miaoli County, 35053, Taiwan, ROC
| | - Hsing-Jien Kung
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Miaoli County, 35053, Taiwan, ROC.,Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan, ROC.,Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan, ROC.,Department of Biochemistry and Molecular Medicine, Comprehensive Cancer Center, University of California at Davis, Sacramento, CA, 95817, USA.,TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, 110, Taiwan, ROC
| | - Jing-Wen Shih
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan, ROC. .,Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan, ROC. .,TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, 110, Taiwan, ROC. .,Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan, ROC.
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26
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Fang Y, Tu J, Han D, Guo Y, Hong W, Wei W. The effects of long non-coding ribonucleic acids on various cellular components in rheumatoid arthritis. Rheumatology (Oxford) 2020; 59:46-56. [PMID: 31605483 PMCID: PMC6909907 DOI: 10.1093/rheumatology/kez472] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 09/07/2019] [Indexed: 01/13/2023] Open
Abstract
RA is a chronic, autoimmune-mediated inflammatory pathology. Long non-coding RNAs (lncRNAs) are a novel group of non-coding RNAs with a length of >200 nucleotides. There are reports emerging that suggest that lncRNAs participate in establishing and sustaining autoimmune diseases, including RA. In this review article, we highlight the functions of lncRNAs in different cell types in RA. Our review indicates that lncRNAs affect various cellular components and are novel candidates that could constitute promising targets for the diagnosis and treatment of RA.
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Affiliation(s)
- Yilong Fang
- Institute of Clinical Pharmacology, Hefei, China.,Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Anhui Medical University, Hefei, China
| | - Jiajie Tu
- Institute of Clinical Pharmacology, Hefei, China.,Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Anhui Medical University, Hefei, China
| | - Dafei Han
- Institute of Clinical Pharmacology, Hefei, China.,Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Anhui Medical University, Hefei, China
| | - Yawei Guo
- Institute of Clinical Pharmacology, Hefei, China.,Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Anhui Medical University, Hefei, China
| | - Wenming Hong
- Institute of Clinical Pharmacology, Hefei, China.,Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Anhui Medical University, Hefei, China
| | - Wei Wei
- Institute of Clinical Pharmacology, Hefei, China.,Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Anhui Medical University, Hefei, China
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27
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Ghafouri-Fard S, Taheri M. Long non-coding RNA signature in gastric cancer. Exp Mol Pathol 2019; 113:104365. [PMID: 31899194 DOI: 10.1016/j.yexmp.2019.104365] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 12/18/2019] [Accepted: 12/28/2019] [Indexed: 02/07/2023]
Abstract
Gastric cancer as a common human malignancy has been associated with aberrant expressions of several coding and non-coding genes. Long non-coding RNAs (lncRNAs) as regulators of gene expressions at different genomic, transcriptomic and post-transcriptomic levels are among putative biomarkers and therapeutic targets in gastric cancer. In the present study, we have searched available literature and listed lncRNAs that are involved in the pathogenesis of gastric cancer. In addition, we discuss associations between expressions of these lncRNAs and tumoral features or risk factors for gastric cancer. Based on the established role of lncRNAs in regulation of genomic stability, cell cycle, apoptosis, angiogenesis and other aspects of cell physiology, the potential of these transcripts as therapeutic targets in gastric cancer should be evaluated in future studies.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Taheri
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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28
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The Roles of Hypoxia-Inducible Factors and Non-Coding RNAs in Gastrointestinal Cancer. Genes (Basel) 2019; 10:genes10121008. [PMID: 31817259 PMCID: PMC6947354 DOI: 10.3390/genes10121008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 11/26/2019] [Accepted: 12/02/2019] [Indexed: 12/15/2022] Open
Abstract
Hypoxia-inducible factors (HIFs) are transcription factors that play central roles in cellular responses against hypoxia. In most cancers, HIFs are closely associated with tumorigenesis by regulating cell survival, angiogenesis, metastasis, and adaptation to the hypoxic tumor microenvironment. Recently, non-coding RNAs (ncRNAs) have been reported to play critical roles in the hypoxic response in various cancers. Here, we review the roles of hypoxia-response ncRNAs in gastrointestinal cancer, with a particular focus on microRNAs and long ncRNAs, and discuss the functional relationships and regulatory mechanisms between HIFs and ncRNAs.
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29
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Wang Y, Yang F, Yang Q. The regulatory roles and potential prognosis implications of long non-coding RNAs in gastric cancer. Histol Histopathol 2019; 35:433-442. [PMID: 31793657 DOI: 10.14670/hh-18-188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Accumulating dysregulated lncRNAs have been demonstrated to execute vital functions in the pathogenesis and progress of gastric cancer (GC) through versatile molecular mechanisms. In this review, we classify the mechanisms of dysregulated lncRNAs in GC into several governing types according to their roles at molecular level. For each regulatory role, we illustrate several instructive examples and introduce significant effects of lncRNAs on cellular biological properties of GC. Besides, we summarize a group of lncRNA-signatures that are potential biomarkers in the prediction of prognosis for GC patients.
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Affiliation(s)
- Yue Wang
- Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, Changchun City, Jilin Province, China
| | - Fan Yang
- Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, Changchun City, Jilin Province, China
| | - Qing Yang
- Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, Changchun City, Jilin Province, China.
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30
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He Y, Wu Z, Qiu C, Wang X, Xiang Y, Lu T, He Y, Shang T, Zhu Q, Wang X, Zeng Q, Zhang H, Li D. Long non-coding RNA GAPLINC promotes angiogenesis by regulating miR-211 under hypoxia in human umbilical vein endothelial cells. J Cell Mol Med 2019; 23:8090-8100. [PMID: 31589383 PMCID: PMC6850972 DOI: 10.1111/jcmm.14678] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/19/2019] [Accepted: 08/29/2019] [Indexed: 12/18/2022] Open
Abstract
In this study, we investigated the role of a long non-coding RNA GAPLINC in angiogenesis using human umbilical vein endothelial cells (HUVEC). We found that hypoxia and hypoxia-inducible factor 1α (HIF-1α) increased the expression of GAPLINC in HUVEC cells. Moreover, GAPLINC overexpression down-regulated miR-211 and up-regulated Bcl2 protein expression. Further rescue experiments confirmed that hypoxia directly increased GAPLINC expression. GAPLINC overexpression also increased cell migration and vessel formation which promoted angiogenesis, and these changes were attributed to the increased expression of vascular endothelial growth factor receptors (VEGFR) and delta-like canonical notch ligand 4 (DLL4) receptors. Finally, we demonstrated that GAPLINC promotes vessel formation and migration by regulating MAPK and NF-kB signalling pathways. Taken together, these findings comprehensively demonstrate that overexpression of GAPLINC increases HUVEC cells angiogenesis under hypoxia condition suggesting that GAPLINC can be a potential target for critical limb ischaemia (CLI) treatment.
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Affiliation(s)
- Yangyan He
- Department of Vascular SurgeryThe First Affiliated Hospital, College of Medicine, Zhejiang UniversityHang ZhouChina
| | - Ziheng Wu
- Department of Vascular SurgeryThe First Affiliated Hospital, College of Medicine, Zhejiang UniversityHang ZhouChina
| | - Chenyang Qiu
- Department of Vascular SurgeryThe First Affiliated Hospital, College of Medicine, Zhejiang UniversityHang ZhouChina
| | - Xiaohui Wang
- Department of Vascular SurgeryThe First Affiliated Hospital, College of Medicine, Zhejiang UniversityHang ZhouChina
| | - Yilang Xiang
- Department of Vascular SurgeryThe First Affiliated Hospital, College of Medicine, Zhejiang UniversityHang ZhouChina
| | - Tian Lu
- Department of Vascular SurgeryThe First Affiliated Hospital, College of Medicine, Zhejiang UniversityHang ZhouChina
| | - Yunjun He
- Department of Vascular SurgeryThe First Affiliated Hospital, College of Medicine, Zhejiang UniversityHang ZhouChina
| | - Tao Shang
- Department of Vascular SurgeryThe First Affiliated Hospital, College of Medicine, Zhejiang UniversityHang ZhouChina
| | - Qianqian Zhu
- Department of Vascular SurgeryThe First Affiliated Hospital, College of Medicine, Zhejiang UniversityHang ZhouChina
| | - Xun Wang
- Department of Vascular SurgeryThe First Affiliated Hospital, College of Medicine, Zhejiang UniversityHang ZhouChina
| | - Qinglong Zeng
- Department of Vascular SurgeryThe First Affiliated Hospital, College of Medicine, Zhejiang UniversityHang ZhouChina
| | - Hongkun Zhang
- Department of Vascular SurgeryThe First Affiliated Hospital, College of Medicine, Zhejiang UniversityHang ZhouChina
| | - Donglin Li
- Department of Vascular SurgeryThe First Affiliated Hospital, College of Medicine, Zhejiang UniversityHang ZhouChina
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31
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Hypoxia and lncRNAs in gastrointestinal cancers. Pathol Res Pract 2019; 215:152687. [DOI: 10.1016/j.prp.2019.152687] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/27/2019] [Accepted: 10/06/2019] [Indexed: 01/17/2023]
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32
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Pewarchuk ME, Barros-Filho MC, Minatel BC, Cohn DE, Guisier F, Sage AP, Marshall EA, Stewart GL, Rock LD, Garnis C, Lam WL. Upgrading the Repertoire of miRNAs in Gastric Adenocarcinoma to Provide a New Resource for Biomarker Discovery. Int J Mol Sci 2019; 20:ijms20225697. [PMID: 31739401 PMCID: PMC6888638 DOI: 10.3390/ijms20225697] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 11/04/2019] [Accepted: 11/05/2019] [Indexed: 12/14/2022] Open
Abstract
Recent studies have uncovered microRNAs (miRNAs) that have been overlooked in early genomic explorations, which show remarkable tissue- and context-specific expression. Here, we aim to identify and characterize previously unannotated miRNAs expressed in gastric adenocarcinoma (GA). Raw small RNA-sequencing data were analyzed using the miRMaster platform to predict and quantify previously unannotated miRNAs. A discovery cohort of 475 gastric samples (434 GA and 41 adjacent nonmalignant samples), collected by The Cancer Genome Atlas (TCGA), were evaluated. Candidate miRNAs were similarly assessed in an independent cohort of 25 gastric samples. We discovered 170 previously unannotated miRNA candidates expressed in gastric tissues. The expression of these novel miRNAs was highly specific to the gastric samples, 143 of which were significantly deregulated between tumor and nonmalignant contexts (p-adjusted < 0.05; fold change > 1.5). Multivariate survival analyses showed that the combined expression of one previously annotated miRNA and two novel miRNA candidates was significantly predictive of patient outcome. Further, the expression of these three miRNAs was able to stratify patients into three distinct prognostic groups (p = 0.00003). These novel miRNAs were also present in the independent cohort (43 sequences detected in both cohorts). Our findings uncover novel miRNA transcripts in gastric tissues that may have implications in the biology and management of gastric adenocarcinoma.
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Affiliation(s)
- Michelle E. Pewarchuk
- Department of Integrative Oncology, British Columbia Cancer Research Centre, Vancouver, BC V5Z 1L3, Canada; (M.E.P.); (B.C.M.); (D.E.C.); (F.G.); (A.P.S.); (E.A.M.); (G.L.S.); (L.D.R.); (C.G.); (W.L.L.)
| | - Mateus C. Barros-Filho
- Department of Integrative Oncology, British Columbia Cancer Research Centre, Vancouver, BC V5Z 1L3, Canada; (M.E.P.); (B.C.M.); (D.E.C.); (F.G.); (A.P.S.); (E.A.M.); (G.L.S.); (L.D.R.); (C.G.); (W.L.L.)
- International Research Center, A.C.Camargo Cancer Center, Sao Paulo 01508-010, Brazil
- Correspondence: ; Tel.: +1-604-675-8111
| | - Brenda C. Minatel
- Department of Integrative Oncology, British Columbia Cancer Research Centre, Vancouver, BC V5Z 1L3, Canada; (M.E.P.); (B.C.M.); (D.E.C.); (F.G.); (A.P.S.); (E.A.M.); (G.L.S.); (L.D.R.); (C.G.); (W.L.L.)
| | - David E. Cohn
- Department of Integrative Oncology, British Columbia Cancer Research Centre, Vancouver, BC V5Z 1L3, Canada; (M.E.P.); (B.C.M.); (D.E.C.); (F.G.); (A.P.S.); (E.A.M.); (G.L.S.); (L.D.R.); (C.G.); (W.L.L.)
| | - Florian Guisier
- Department of Integrative Oncology, British Columbia Cancer Research Centre, Vancouver, BC V5Z 1L3, Canada; (M.E.P.); (B.C.M.); (D.E.C.); (F.G.); (A.P.S.); (E.A.M.); (G.L.S.); (L.D.R.); (C.G.); (W.L.L.)
- Department of Pulmonology, Thoracic Oncology and Respiratory Intensive Care & CIC-CRB INSERM 1404, Rouen University Hospital, 76000 Rouen, France
- QuantIF-LITIS EA 4108, IRIB, Rouen University, 76000 Rouen, France
| | - Adam P. Sage
- Department of Integrative Oncology, British Columbia Cancer Research Centre, Vancouver, BC V5Z 1L3, Canada; (M.E.P.); (B.C.M.); (D.E.C.); (F.G.); (A.P.S.); (E.A.M.); (G.L.S.); (L.D.R.); (C.G.); (W.L.L.)
| | - Erin A. Marshall
- Department of Integrative Oncology, British Columbia Cancer Research Centre, Vancouver, BC V5Z 1L3, Canada; (M.E.P.); (B.C.M.); (D.E.C.); (F.G.); (A.P.S.); (E.A.M.); (G.L.S.); (L.D.R.); (C.G.); (W.L.L.)
| | - Greg L. Stewart
- Department of Integrative Oncology, British Columbia Cancer Research Centre, Vancouver, BC V5Z 1L3, Canada; (M.E.P.); (B.C.M.); (D.E.C.); (F.G.); (A.P.S.); (E.A.M.); (G.L.S.); (L.D.R.); (C.G.); (W.L.L.)
| | - Leigha D. Rock
- Department of Integrative Oncology, British Columbia Cancer Research Centre, Vancouver, BC V5Z 1L3, Canada; (M.E.P.); (B.C.M.); (D.E.C.); (F.G.); (A.P.S.); (E.A.M.); (G.L.S.); (L.D.R.); (C.G.); (W.L.L.)
- Faculty of Dentistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Cathie Garnis
- Department of Integrative Oncology, British Columbia Cancer Research Centre, Vancouver, BC V5Z 1L3, Canada; (M.E.P.); (B.C.M.); (D.E.C.); (F.G.); (A.P.S.); (E.A.M.); (G.L.S.); (L.D.R.); (C.G.); (W.L.L.)
- Department of Surgery, Division of Otolaryngology, University of British Columbia, Vancouver, BC V5Z 1L3, Canada
| | - Wan L. Lam
- Department of Integrative Oncology, British Columbia Cancer Research Centre, Vancouver, BC V5Z 1L3, Canada; (M.E.P.); (B.C.M.); (D.E.C.); (F.G.); (A.P.S.); (E.A.M.); (G.L.S.); (L.D.R.); (C.G.); (W.L.L.)
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Poor expression of long-chain noncoding RNA GAPLINC inhibits epithelial–mesenchymal transition, and invasion and migration of hepatocellular carcinoma cells. Anticancer Drugs 2019; 30:784-794. [DOI: 10.1097/cad.0000000000000752] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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34
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Liu W, Xu J, Zhang C. Clinical usefulness of gastric adenocarcinoma predictive long intergenic noncoding RNA in human malignancies: A meta-analysis. Pathol Res Pract 2019; 215:152387. [DOI: 10.1016/j.prp.2019.03.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/21/2019] [Accepted: 03/15/2019] [Indexed: 01/31/2023]
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35
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Zhao B, Liu K, Cai L. LINK-A lncRNA functions in the metastasis of osteosarcoma by upregulating HIF1α. Oncol Lett 2019; 17:5005-5011. [PMID: 31186711 PMCID: PMC6507337 DOI: 10.3892/ol.2019.10177] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 02/15/2019] [Indexed: 01/02/2023] Open
Abstract
Long intergenic non-coding RNA for kinase activation (LINK-A) long non-coding RNA (lncRNA) is an oncogenic lncRNA in triple-negative breast cancer. The involvement of LINK-A lncRNA in other diseases is unknown. The present study aimed to investigate the possible involvement of LINK-A lncRNA in osteosarcoma. The results demonstrated that plasma levels of LINK-A lncRNA were significantly higher in patients with metastatic osteosarcoma (MO) compared with healthy controls and patients with non-metastatic osteosarcoma (NMO). LINK-A lncRNA overexpression significantly promoted cancer cell migration and invasion in osteosarcoma cell lines MG-63 and U20S. Upregulated expression of hypoxia-inducible factor 1α (HIF1α) was observed in cancer cells following LINK-A lncRNA overexpression. Exogenous HIF1α treatment did not significantly affect the expression of LINK-A lncRNA in cancer cells, whereas treatment with an HIF1α inhibitor significantly attenuated the effects of LINK-A lncRNA overexpression on cancer cell migration and invasion. Based on the results it was concluded that LINK-A lncRNA participated in the metastasis of osteosarcoma by upregulating HIF1α; upregulation of LINK-A lncRNA may serve as a potential diagnostic biomarker for patients with MO but not in those with NMO.
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Affiliation(s)
- Boming Zhao
- Department of Orthopaedic Surgery, Zhongnan Hospital Affiliated to Medical College of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Kebin Liu
- Department of Orthopaedic Surgery, First People's Hospital of Jingzhou, Jingzhou, Hubei 434000, P.R. China
| | - Lin Cai
- Department of Orthopaedic Surgery, Zhongnan Hospital Affiliated to Medical College of Wuhan University, Wuhan, Hubei 430071, P.R. China
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Sarfi M, Abbastabar M, Khalili E. Long noncoding RNAs biomarker-based cancer assessment. J Cell Physiol 2019; 234:16971-16986. [PMID: 30835829 DOI: 10.1002/jcp.28417] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 02/04/2019] [Accepted: 02/14/2019] [Indexed: 12/18/2022]
Abstract
Cancer diagnosis have mainly relied on the incorporation of molecular biomarkers as part of routine diagnostic tool. The molecular alteration ranges from those involving DNA, RNA, noncoding RNAs (microRNAs and long noncoding RNAs [lncRNAs]) and proteins. lncRNAs are recently discovered noncoding endogenous RNAs that critically regulates the development, invasion, and metastasis of cancer cells. They are dysregulated in different types of malignancies and have the potential to serve as diagnostic markers for cancer. The expression of noncoding RNAs is altered following many diseases, and besides, some of them can be secreted from the cells into the circulation following the apoptotic and necrotic cell death. These secreted noncoding RNAs are known as cell free RNA. These RNAs can be secreted from the cell through the apoptotic body, extracellular vesicles including microvesicle and exosome, and bind to proteins. Since, lncRNAs display high organ and cell specificity, can be found in the blood, urine, tumor tissue, or other tissues or bodily fluids of some patients with cancer, this review summarizes the most significant and up-to-date findings of research on lncRNAs involvement in different cancers, focusing on the potential of cancer-related lncRNAs as biomarkers for diagnosis, prognosis, and therapy.
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Affiliation(s)
- Mohammad Sarfi
- Department of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Students Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Abbastabar
- Department of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Students Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Ehsan Khalili
- Department of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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Hypoxia-induced LncRNA PCGEM1 promotes invasion and metastasis of gastric cancer through regulating SNAI1. Clin Transl Oncol 2019; 21:1142-1151. [PMID: 30690667 DOI: 10.1007/s12094-019-02035-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 01/08/2019] [Indexed: 12/12/2022]
Abstract
PURPOSE Hypoxia is an indispensable factor in the progression of metastasis. Hypoxia inducible factor-1α (HIF-1α), the core element in generating the hypoxia response, induces invasion and metastasis by promoting epithelial-mesenchymal transition (EMT). This study explored the underlying mechanism of hypoxia associated with the invasion and metastasis of gastric cancer (GC). METHODS Six methods were employed to assess the function of the long noncoding RNA (lncRNA) prostate cancer gene expression marker 1 (PCGEM1) including gene silencing, RT-PCR, the separation of nuclear and cytoplasmic fractions, scrape motility assay, transwell migration assay, and Western-blot. RESULTS LncRNA PCGEM1 was overexpressed in GC cells and tissues, and was induced by hypoxia in GC cells. Additional experiments confirmed that the knockdown of PCGEM1 significantly repressed the invasion and metastasis of GC cells. SNAI1, a key transcription factor of EMT, was regulated by PCGEM1. Overexpression of SNAI1 rescued the inhibition of PCGEM1-knockdown during the invasion and metastasis of GC cells. In addition, PCGEM1 and SNAI1 jointly affected the biomarkers of EMT. CONCLUSION Our findings indicated that PCGEM1 is a hypoxia-responsive lncRNA, and contributes to the invasion and metastasis of GC. The potential mechanism is attributed to the regulation of EMT by PCGEM1 and its influence on the expression of SNAI1.
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GAPLINC is a predictor of poor prognosis and regulates cell migration and invasion in osteosarcoma. Biosci Rep 2018; 38:BSR20181171. [PMID: 30177521 PMCID: PMC6177557 DOI: 10.1042/bsr20181171] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 08/18/2018] [Accepted: 08/23/2018] [Indexed: 01/19/2023] Open
Abstract
Gastric adenocarcinoma predictive long intergenic non-coding (GAPLINC) is a novel long non-coding RNA (lncRNA) and has been found to function as an oncogenic lncRNA in gastric cancer, colorectal cancer, and bladder cancer. The expression status and biological function of GAPLINC in osteosarcoma are still unknown. Thus, we analyzed the association between GAPLINC expression and clinicopathological characteristics in osteosarcoma clinical samples, and conducted loss-of-function study in osteosarcoma cell lines. In our results, GAPLINC expression is elevated in osteosarcoma tissues and cell lines, and correlated with advanced Enneking stage, present distant metastasis, and poor histological grade. Survival analyses indicated that GAPLINC expression was negatively associated with overall survival, and GAPLINC high-expression was an independent risk factor in osteosarcoma patients. The in vitro studies showed knockdown of GAPLINC depressed osteosarcoma cell migration and invasion via inhibiting CD44 expression, but no effect on cell proliferation. In conclusion, GAPLINC may serve as a potential biomarker for predicting prognosis and developing therapy for osteosarcoma.
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Abstract
SIGNIFICANCE The emerging connections between an increasing number of long noncoding RNAs (lncRNAs) and oncogenic hallmarks provide a new twist to tumor complexity. Recent Advances: In the present review, we highlight specific lncRNAs that have been studied in relation to tumorigenesis, either as participants in the neoplastic process or as markers of pathway activity or drug response. These transcripts are typically deregulated by oncogenic or tumor-suppressing signals or respond to microenvironmental conditions such as hypoxia. CRITICAL ISSUES Among these transcripts are lncRNAs sufficiently divergent between mouse and human genomes that may contribute to biological differences between species. FUTURE DIRECTIONS From a translational standpoint, knowledge about primate-specific lncRNAs may help explain the reason behind the failure to reproduce the results from mouse cancer models in human cell-based systems. Antioxid. Redox Signal. 29, 922-935.
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Affiliation(s)
- Xue Wu
- 1 Department of Medicine, Indiana University School of Medicine , Indianapolis, Indiana.,2 Department of Microbiology and Immunology, Indiana University School of Medicine , Indianapolis, Indiana
| | - Oana M Tudoran
- 1 Department of Medicine, Indiana University School of Medicine , Indianapolis, Indiana.,3 Department of Functional Genomics and Experimental Pathology, The Oncology Institute "Prof. Dr. I. Chiricuta," Cluj-Napoca, Romania
| | - George A Calin
- 4 Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center , Houston, Texas.,5 Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center , Houston, Texas
| | - Mircea Ivan
- 1 Department of Medicine, Indiana University School of Medicine , Indianapolis, Indiana.,2 Department of Microbiology and Immunology, Indiana University School of Medicine , Indianapolis, Indiana
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Gao S, Zhao ZY, Wu R, Zhang Y, Zhang ZY. Prognostic value of long noncoding RNAs in gastric cancer: a meta-analysis. Onco Targets Ther 2018; 11:4877-4891. [PMID: 30147339 PMCID: PMC6098423 DOI: 10.2147/ott.s169823] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background In the last few years, accumulating evidence has indicated that numerous long noncoding RNAs (lncRNAs) are abnormally expressed in gastric cancer (GC) and are associated with the survival of GC patients. This study aimed to conduct a meta-analysis on 19 lncRNAs (AFAP1 antisense RNA 1 [AFAP1-AS1], CDKN2B antisense RNA 1 [ANRIL], cancer susceptibility 15 [CASC15], colon cancer associated transcript 2 [CCAT2], gastric adenocarcinoma associated, positive CD44 regulator, long intergenic noncoding RNA [GAPLINC], H19, imprinted maternally expressed transcript [H19], HOX transcript antisense RNA [HOTAIR], HOXA distal transcript antisense RNA [HOTTIP], long intergenic non-protein coding RNA 673 [LINC00673], metastasis-associated lung adenocarcinoma transcript 1 [MALAT1], maternally expressed 3 [MEG3], promoter of CDKN1A antisense DNA damage activated RNA [PANDAR], Pvt1 oncogene [PVT1], SOX2 overlapping transcript [Sox2ot], SPRY4 intronic transcript 1 [SPRY4-IT1], urothelial cancer associated 1 [UCA1], X inactive specific transcript [XIST], ZEB1 antisense RNA 1 [ZEB1-AS1] and ZNFX1 antisense RNA 1 [ZFAS1]) to systematically estimate their prognostic value in GC. Methods The qualified literature was systematically searched in PubMed, Web of Science, Embase and Cochrane Database of Systematic Reviews (up to March 16, 2018), and one meta-analysis relating to the relationship between lncRNA expression and overall survival (OS) of GC patients was performed. The only evaluation criterion of survival results was OS. Results A total of 6,095 GC patients and 19 lncRNAs from 51 articles were included in the present study. Among the listed 19 lncRNAs, 18 lncRNAs (other than SPRY4-IT1) showed a significantly prognostic value (P<0.05). Conclusion This meta-analysis suggested that the abnormally expressed lncRNAs (AFAP1-AS1, ANRIL, CASC15, CCAT2, GAPLINC, H19, HOTAIR, HOTTIP, LINC00673, MALAT1, MEG3, PANDAR, PVT1, Sox2ot, UCA1, XIST, ZEB1-AS1 and ZFAS1) were significantly associated with the survival of GC patients, among which AFAP1-AS1, CCAT2, LINC00673, PANDAR, PVT1, Sox2ot, ZEB1-AS1 and ZFAS1 were strong candidates in predicting the prognosis of GC patients.
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Affiliation(s)
- Song Gao
- The Second Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China,
| | - Zhi-Ying Zhao
- Division of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Rong Wu
- The Second Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China,
| | - Yue Zhang
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, People's Republic of China,
| | - Zhen-Yong Zhang
- The Second Department of Clinical Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China,
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Palm F, Koeners MP. Editorial: Hypoxia in Kidney Disease. Front Physiol 2018; 9:485. [PMID: 29773996 PMCID: PMC5943530 DOI: 10.3389/fphys.2018.00485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 04/16/2018] [Indexed: 11/13/2022] Open
Affiliation(s)
- Fredrik Palm
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Maarten P Koeners
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Exeter, United Kingdom.,School of Physiology, Pharmacology and Neuroscience, Biomedical Sciences, University of Bristol, Bristol, United Kingdom
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Yang Z, Shi X, Li C, Wang X, Hou K, Li Z, Zhang X, Fan Y, Qu X, Che X, Liu Y. Long non-coding RNA UCA1 upregulation promotes the migration of hypoxia-resistant gastric cancer cells through the miR-7-5p/EGFR axis. Exp Cell Res 2018; 368:194-201. [PMID: 29723509 DOI: 10.1016/j.yexcr.2018.04.030] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 04/25/2018] [Accepted: 04/28/2018] [Indexed: 10/17/2022]
Abstract
A variety of solid tumors are surrounded by a hypoxic microenvironment, which is known to be associated with high metastatic capability and resistance to various clinical therapies, contributing to a poor survival rate for cancer patients. Although the majority of previous studies on tumor-associated hypoxia have focused on acute hypoxia, chronic hypoxia more closely mimics the actual hypoxic microenvironment of a tumor. In this study, two novel hypoxia-resistant gastric cancer (HRGC) cell lines which could grow normally in 2% oxygen were established. The long non-coding RNA UCA1 was upregulated in HRGC cells, which promoted their migration. Bioinformatics analysis and a luciferase reporter assay showed that miR-7-5p could bind to specific sites of UCA1 to regulate the target EGFR through competitive endogenous RNA function. UCA1 directly interacted with miR-7-5p and decreased the binding of miR-7-5p to the EGFR 3'-untranslated region, which suppressed the degradation of EGFR mRNA by miR-7-5p. Therefore, long-term hypoxia induced UCA1 to promote cell migration by enhancing the expression of EGFR. This study thus reveals a new mechanism by which a hypoxic microenvironment promotes tumor metastasis, and highlights UCA1 as a potential biomarker for predicting the metastasis of gastric cancer to guide clinical treatment.
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Affiliation(s)
- Zichang Yang
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China; Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Xiaonan Shi
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China; Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Ce Li
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China; Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Xiaoxun Wang
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China; Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Kezuo Hou
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China; Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Zhi Li
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China; Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Xiaojie Zhang
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China; Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Yibo Fan
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China; Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Xiujuan Qu
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China; Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
| | - Xiaofang Che
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China; Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China.
| | - Yunpeng Liu
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China; Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China.
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Mo BY, Guo XH, Yang MR, Liu F, Bi X, Liu Y, Fang LK, Luo XQ, Wang J, Bellanti JA, Pan YF, Zheng SG. Long Non-Coding RNA GAPLINC Promotes Tumor-Like Biologic Behaviors of Fibroblast-Like Synoviocytes as MicroRNA Sponging in Rheumatoid Arthritis Patients. Front Immunol 2018; 9:702. [PMID: 29692777 PMCID: PMC5902673 DOI: 10.3389/fimmu.2018.00702] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 03/22/2018] [Indexed: 01/15/2023] Open
Abstract
Rapidly accumulating evidence has now suggested that the long non-coding RNAs (LncRNAs), a large and diverse class of non-coding transcribed RNA molecules with diverse functional roles and mechanisms, play a major role in the pathogenesis of many human inflammatory diseases. Although some LncRNAs are overexpressed in plasma, T cell, and synovial tissues of patients with rheumatoid arthritis (RA), there is a dearth of knowledge in what role these transcripts play in fibroblast-like synoviocytes (FLSs) of these patients. Here, our studies showed that GAPLINC, a newly identified functional LncRNA in oncology, displayed a greater degree of expression in FLSs from RA than in patients with traumatic injury. GAPLINC suppression in RA-FLS cells revealed significant alterations in cell proliferation, invasion, migration, and proinflammatory cytokines production. Additionally, we performed a preliminary bioinformatics analysis of GAPLINC gene sequence in order to find its target molecules, using miRanda, PITA, RNAhybrid algorithms, Kyoto encyclopedia of genes and genomes, and gene ontology analysis. Since the results predicted that some of microRNAs and mRNA may interact with GAPLINC, we simulated a gene co-action network model based on a competitive endogenous RNA theory. Further verification of this model demonstrated that silencing of GAPLINC increased miR-382-5p and miR-575 expression. The results of this study suggest that GAPLINC may function as a novel microRNAs sponging agent affecting the biological characteristics of RA-FLSs. Additionally, GAPLINC may also promote RA-FLS tumor-like behaviors in a miR-382-5p-dependent and miR-575-dependent manner. Based upon these findings, LncRNA GAPLINC may provide a novel valuable therapeutic target for RA patients.
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Affiliation(s)
- Bi Yao Mo
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xing Hua Guo
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Meng Ru Yang
- Department of Internal Medicine, Division of Rheumatology, The Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Fang Liu
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xuan Bi
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yan Liu
- Center for Clinic Immunology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Lin Kai Fang
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xi Qing Luo
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Julie Wang
- Department of Medicine, Division of Rheumatology, Hershey Medical Center at Penn State University, Hershey, PA, United States
| | - Joseph A Bellanti
- Department of Pediatrics and Microbiology-Immunology, Georgetown University Medical Center, Washington, DC, United States
| | - Yun Feng Pan
- Department of Internal Medicine, Division of Rheumatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Song Guo Zheng
- Department of Medicine, Division of Rheumatology, Hershey Medical Center at Penn State University, Hershey, PA, United States
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Luo Y, Ouyang J, Zhou D, Zhong S, Wen M, Ou W, Yu H, Jia L, Huang Y. Long Noncoding RNA GAPLINC Promotes Cells Migration and Invasion in Colorectal Cancer Cell by Regulating miR-34a/c-MET Signal Pathway. Dig Dis Sci 2018; 63:890-899. [PMID: 29427222 DOI: 10.1007/s10620-018-4915-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 01/03/2018] [Indexed: 01/17/2023]
Abstract
BACKGROUND Gastric adenocarcinoma predictive long intergenic noncoding RNA (GAPLINC) has been detected in colorectal cancer (CRC) cells and reportedly performs many functions related to tumor proliferation and metastasis. Aim The present study aimed to comprehensively explore the biological functions of GAPLINC and their underlying mechanism in CRC cell. METHODS The human cancer LncRNA PCR array was used to detect the differentially expressed long noncoding RNAs in human CRC samples. Real-time PCR, dual-luciferase assay, RNA pull-down assay, Transwell assay, and western blot analysis were performed to explore the molecular mechanism underlying GAPLINC functions related to migration and invasion of a human CRC cell line (HCT116). RESULTS Compared to the non-cancerous tissues, GAPLINC expression was obviously increased in CRC tissues. In HCT116, silencing of GAPLINC weakened cell migration and invasion, while overexpression of GAPLINC significantly promoted cell migration and invasion. Through dual-luciferase, RNA pull-down, and Transwell assays, we verified that miR-34a was the downstream molecule of GAPLINC and that miR-34a negatively regulated the migration and invasion of HCT116 cell. Furthermore, we found that GAPLINC positively regulated the miR-34a target gene c-MET in CRC tissues. CONCLUSIONS Our findings revealed that GAPLINC was up-regulated in CRC tissues and was involved in the migration and invasion of CRC cells by regulating miR-34a/c-MET signaling pathway.
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Affiliation(s)
- Yuqi Luo
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China.,Department of General Surgery, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 511457, China
| | - Jun Ouyang
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China.
| | - Donggen Zhou
- Ningbo international Travel Healthcare Center, Ningbo, 315000, China
| | - Shizhen Zhong
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Minjie Wen
- Department of General Surgery, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 511457, China
| | - Wentao Ou
- Department of General Surgery, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 511457, China
| | - Haitao Yu
- Department of General Surgery, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 511457, China
| | - Lin Jia
- Department of Gastroenterology, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 511457, China
| | - Yaoxin Huang
- Department of Gastroenterology, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 511457, China
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Zheng Z, Zhu D, Zhao F, Han J, Chen H, Cai Y, Xie W. Upregulated GAPLINC predicts a poor prognosis in bladder cancer patients and promotes tumor proliferation and invasion. Oncol Lett 2018; 15:6770-6776. [PMID: 29725414 DOI: 10.3892/ol.2018.8158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Accepted: 01/11/2018] [Indexed: 12/11/2022] Open
Abstract
Previous studies have demonstrated that long noncoding RNAs (lncRNAs) exhibit critical regulatory roles in cancer biology. However, few lncRNAs have been well characterized in bladder cancer. In the previous study, we demonstrated that gastric adenocarcinoma associated, positive CD44 regulator, long intergenic noncoding RNA (GAPLINC) was significantly upregulated in bladder cancer tissues compared with normal tissues in The Cancer Genome Atlas (TCGA) cohort (P=0.039) and a validated cohort of 80 patients with bladder cancer (P=0.021). Statistical analysis revealed that GAPLINC expression level was associated with tumor stage in the validated cohort (P=0.017). Kaplan-Meier analysis demonstrated that patients in the high GAPLINC expression group had a worse overall survival (P=0.0386), indicating that GAPLINC may be a sensitive prognostic biomarker for patients with bladder cancer. Furthermore, knockdown of GAPLINC inhibited cell proliferation and colony formation, promoted cells cycle arrest at G1 phase and suppressed cells migration and invasion. The findings of the present study suggest that GAPLINC exhibits an oncogenic role in bladder cancer and may be a potential prognostic biomarker and therapeutic target.
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Affiliation(s)
- Zaosong Zheng
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Dingjun Zhu
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Fengjin Zhao
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Jinli Han
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Haicheng Chen
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Yuhong Cai
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Wenlian Xie
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, P.R. China
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Patinha D, Pijacka W, Paton JFR, Koeners MP. Cooperative Oxygen Sensing by the Kidney and Carotid Body in Blood Pressure Control. Front Physiol 2017; 8:752. [PMID: 29046642 PMCID: PMC5632678 DOI: 10.3389/fphys.2017.00752] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 09/15/2017] [Indexed: 12/13/2022] Open
Abstract
Oxygen sensing mechanisms are vital for homeostasis and survival. When oxygen levels are too low (hypoxia), blood flow has to be increased, metabolism reduced, or a combination of both, to counteract tissue damage. These adjustments are regulated by local, humoral, or neural reflex mechanisms. The kidney and the carotid body are both directly sensitive to falls in the partial pressure of oxygen and trigger reflex adjustments and thus act as oxygen sensors. We hypothesize a cooperative oxygen sensing function by both the kidney and carotid body to ensure maintenance of whole body blood flow and tissue oxygen homeostasis. Under pathological conditions of severe or prolonged tissue hypoxia, these sensors may become continuously excessively activated and increase perfusion pressure chronically. Consequently, persistence of their activity could become a driver for the development of hypertension and cardiovascular disease. Hypoxia-mediated renal and carotid body afferent signaling triggers unrestrained activation of the renin angiotensin-aldosterone system (RAAS). Renal and carotid body mediated responses in arterial pressure appear to be synergistic as interruption of either afferent source has a summative effect of reducing blood pressure in renovascular hypertension. We discuss that this cooperative oxygen sensing system can activate/sensitize their own afferent transduction mechanisms via interactions between the RAAS, hypoxia inducible factor and erythropoiesis pathways. This joint mechanism supports our view point that the development of cardiovascular disease involves afferent nerve activation.
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Affiliation(s)
- Daniela Patinha
- School of Physiology, Pharmacology and Neuroscience, Biomedical Sciences, University of Bristol, Bristol, United Kingdom.,Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Exeter, United Kingdom
| | - Wioletta Pijacka
- School of Physiology, Pharmacology and Neuroscience, Biomedical Sciences, University of Bristol, Bristol, United Kingdom
| | - Julian F R Paton
- School of Physiology, Pharmacology and Neuroscience, Biomedical Sciences, University of Bristol, Bristol, United Kingdom
| | - Maarten P Koeners
- School of Physiology, Pharmacology and Neuroscience, Biomedical Sciences, University of Bristol, Bristol, United Kingdom.,Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Exeter, United Kingdom
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Shih JW, Kung HJ. Long non-coding RNA and tumor hypoxia: new players ushered toward an old arena. J Biomed Sci 2017; 24:53. [PMID: 28789687 PMCID: PMC5547530 DOI: 10.1186/s12929-017-0358-4] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 07/25/2017] [Indexed: 01/17/2023] Open
Abstract
Hypoxia is a classic feature of the tumor microenvironment with a profound impact on cancer progression and therapeutic response. Activation of complex hypoxia pathways orchestrated by the transcription factor HIF (hypoxia-inducible factor) contributes to aggressive phenotypes and metastasis in numerous cancers. Over the past few decades, exponentially growing research indicated the importance of the non-coding genome in hypoxic tumor regions. Recently, key roles of long non coding RNAs (lncRNAs) in hypoxia-driven cancer progression have begun to emerge. These hypoxia-responsive lncRNAs (HRLs) play pivotal roles in regulating hypoxic gene expression at chromatic, transcriptional, and post-transcriptional levels by acting as effectors of the indirect response to HIF or direct modulators of the HIF-transcriptional cascade. Notably, the aberrant expression of HRLs significantly correlates with poor outcomes in cancer patients, showing promise for future utility as a tumor marker or therapeutic target. Here we address the latest advances made toward understanding the functional relevance of HRLs, the involvement of these transcripts in hypoxia response and the underlying action mechanisms, highlighting their specific roles in HIF-1 signaling regulation and hypoxia-associated malignant transformation.
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Affiliation(s)
- Jing-Wen Shih
- Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, 110, Taiwan. .,Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, 110, Taiwan. .,Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 110, Taiwan.
| | - Hsing-Jien Kung
- Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, 110, Taiwan.,Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, 110, Taiwan.,Department of Biochemistry and Molecular Medicine, Comprehensive Cancer Center, University of California at Davis, Sacramento, CA, 95817, USA.,Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan, Miaoli County, 350, Taiwan
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