1
|
Sharma NK, Dwivedi P, Bhushan R, Maurya PK, Kumar A, Dakal TC. Engineering circular RNA for molecular and metabolic reprogramming. Funct Integr Genomics 2024; 24:117. [PMID: 38918231 DOI: 10.1007/s10142-024-01394-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 06/10/2024] [Accepted: 06/17/2024] [Indexed: 06/27/2024]
Abstract
The role of messenger RNA (mRNA) in biological systems is extremely versatile. However, it's extremely short half-life poses a fundamental restriction on its application. Moreover, the translation efficiency of mRNA is also limited. On the contrary, circular RNAs, also known as circRNAs, are a common and stable form of RNA found in eukaryotic cells. These molecules are synthesized via back-splicing. Both synthetic circRNAs and certain endogenous circRNAs have the potential to encode proteins, hence suggesting the potential of circRNA as a gene expression machinery. Herein, we aim to summarize all engineering aspects that allow exogenous circular RNA (circRNA) to prolong the time that proteins are expressed from full-length RNA signals. This review presents a systematic engineering approach that have been devised to efficiently assemble circRNAs and evaluate several aspects that have an impact on protein production derived from. We have also reviewed how optimization of the key components of circRNAs, including the topology of vector, 5' and 3' untranslated sections, entrance site of the internal ribosome, and engineered aptamers could be efficiently impacting the translation machinery for molecular and metabolic reprogramming. Collectively, molecular and metabolic reprogramming present a novel way of regulating distinctive cellular features, for instance growth traits to neoplastic cells, and offer new possibilities for therapeutic inventions.
Collapse
Affiliation(s)
- Narendra Kumar Sharma
- Department of Bioscience and Biotechnology, Banasthali Vidyapith (Deemed University), P.O. Banasthali Vidyapith Distt. Tonk, Rajasthan, 304 022, India.
| | - Pragya Dwivedi
- Department of Bioscience and Biotechnology, Banasthali Vidyapith (Deemed University), P.O. Banasthali Vidyapith Distt. Tonk, Rajasthan, 304 022, India
| | - Ravi Bhushan
- Department of Zoology, M.S. College, Motihari, Bihar, India
| | - Pawan Kumar Maurya
- Department of Biochemistry, Central University of Haryana, Mahendergarh, 123031, Haryana, India
| | - Abhishek Kumar
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, Karnataka, India
- Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Tikam Chand Dakal
- Genome and Computational Biology Lab, Department of Biotechnology, Mohanlal Sukhadia University, Udaipur, Rajasthan, 313001, India.
| |
Collapse
|
2
|
Ma Y, Wang T, Zhang X, Wang P, Long F. The role of circular RNAs in regulating resistance to cancer immunotherapy: mechanisms and implications. Cell Death Dis 2024; 15:312. [PMID: 38697964 PMCID: PMC11066075 DOI: 10.1038/s41419-024-06698-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/16/2024] [Accepted: 04/18/2024] [Indexed: 05/05/2024]
Abstract
Cancer immunotherapy has rapidly transformed cancer treatment, yet resistance remains a significant hurdle, limiting its efficacy in many patients. Circular RNAs (circRNAs), a novel class of non-coding RNAs, have emerged as pivotal regulators of gene expression and cellular processes. Increasing evidence indicates their involvement in modulating resistance to cancer immunotherapy. Notably, certain circRNAs function as miRNA sponges or interact with proteins, influencing the expression of immune-related genes, including crucial immune checkpoint molecules. This, in turn, shapes the tumor microenvironment and significantly impacts the response to immunotherapy. In this comprehensive review, we explore the evolving role of circRNAs in orchestrating resistance to cancer immunotherapy, with a specific focus on their mechanisms in influencing immune checkpoint gene expression. Additionally, we underscore the potential of circRNAs as promising therapeutic targets to augment the effectiveness of cancer immunotherapy. Understanding the role of circRNAs in cancer immunotherapy resistance could contribute to the development of new therapeutic strategies to overcome resistance and improve patient outcomes.
Collapse
Affiliation(s)
- Yu Ma
- Department of Clinical Research, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, 610041, China
| | - Ting Wang
- Department of Clinical Research, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, 610041, China
| | - Xudong Zhang
- Department of Clinical Research, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, 610041, China
| | - Pinghan Wang
- Laboratory Medicine Center, Sichuan Provincial Maternity and Child Health Care Hospital, Affiliated Women's and Children's Hospital of Chengdu Medical College, Chengdu Medical College, Chengdu, 610032, China
| | - Fangyi Long
- Laboratory Medicine Center, Sichuan Provincial Maternity and Child Health Care Hospital, Affiliated Women's and Children's Hospital of Chengdu Medical College, Chengdu Medical College, Chengdu, 610032, China.
| |
Collapse
|
3
|
Deng Z, Feng Q, Zhao D, Huang Z. A degradome-related signature for predicting the prognosis and immunotherapy benefit in stomach adenocarcinoma based on machine learning procedure. Medicine (Baltimore) 2024; 103:e37728. [PMID: 38608069 PMCID: PMC11018154 DOI: 10.1097/md.0000000000037728] [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: 01/04/2024] [Accepted: 03/05/2024] [Indexed: 04/14/2024] Open
Abstract
Stomach adenocarcinoma (STAD) is one of the subtype of gastric cancer with high invasiveness, extreme heterogeneity, high morbidity, and high mortality. The degradome is the most abundant class of cellular enzymes that play an essential role in regulating cellular activity and carcinogenesis. An integrative machine learning procedure including 10 methods was performed to develop a prognostic degradome-based prognostic signature (DPS) in TCGA, GSE15459, GSE26253, and GSE62254 datasets. Investigations of the DPS concerning immune infiltration, immunotherapy benefits, and drug priority were orchestrated. The DPS developed by Enet [alpha = 0.3] method was regarded as the optimal prognostic model. The DPS had a stable and powerful performance in predicting the clinical outcome of STAD and served as an independent risk factor in training and testing cohorts. The C-index of DPS was higher than that of age, sex, and clinical stage. STAD patients with low DPS scores had a higher abundance of B cells, CD8+ T cells, higher cytolytic scores, and T cell co-stimulation scores. Moreover, low DPS score indicated a lower tumor immune dysfunction and exclusion score, lower T cell dysfunction and exclusion score, higher PD1&CTLA4 immunophenoscore, and higher tumor mutation burden score in STAD, demonstrating a better immunotherapy response. STAD patients with a high DPS score had a lower IC50 value of common chemotherapy and targeted therapy regimens (Cisplatin, Docetaxel, Gefitinib, etc). Our study developed an optimal DPS for STAD. The DPS could predict the prognosis, risk stratification and guide treatment for STAD patients.
Collapse
Affiliation(s)
- Ziqing Deng
- Department of General Surgery, Nanchang People’s Hospital, Nanchang, China
| | - Qian Feng
- Department of Emergency, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Dan Zhao
- Department of Critical Care Medicine, The Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Zhihao Huang
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| |
Collapse
|
4
|
Deng C, Huo M, Chu H, Zhuang X, Deng G, Li W, Wei H, Zeng L, He Y, Liu H, Li J, Zhang C, Chen H. Exosome circATP8A1 induces macrophage M2 polarization by regulating the miR-1-3p/STAT6 axis to promote gastric cancer progression. Mol Cancer 2024; 23:49. [PMID: 38459596 PMCID: PMC10921793 DOI: 10.1186/s12943-024-01966-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 02/22/2024] [Indexed: 03/10/2024] Open
Abstract
Circular RNAs (circRNAs) play important roles in gastric cancer progression but the regulatory role of circRNAs in controlling macrophage function remains elusive. Exosomes serve as cargo for circRNAs and play a crucial role as mediators in facilitating communication between cancer cells and the tumor microenvironment. In this study, we found that circATP8A1, a previously unreported circular RNA, is highly expressed in both gastric cancer tissues and exosomes derived from plasma. Increased circATP8A1 was associated with advanced TNM stage and worse prognosis in patients with gastric cancer. We showed that the circATP8A1 knockdown significantly inhibited gastric cancer proliferation and invasion in vitro and in vivo. Functionally, exosome circATP8A1 induced the M2 polarization of macrophages through the STAT6 pathway instead of the STAT3 pathway. Mechanistically, circATP8A1 was shown to activate the STAT6 pathway through competitive binding to miR-1-3p, as confirmed by Fluorescence In Situ Hybridization (FISH), RNA immunoprecipitation, RNA pulldown, and Luciferase reporter assays. The reversal of circATP8A1-induced STAT6 pathway activation and macrophage polarization was observed upon blocking miR-1-3p. Macrophages treated with exosomes from gastric cancer cells overexpressing circATP8A1 were able to promote gastric cancer migration, while knockdown of circATP8A1 reversed these effects in vivo. In summary, exosome-derived circATP8A1 from gastric cancer cells induce macrophages M2 polarization via the circATP8A1/miR-1-3p/STAT6 axis, and tumor progression. Our results highlight circATP8A1 as a potential prognostic biomarker and therapeutic target in gastric cancer.
Collapse
Grants
- 2022M713588 and 2023M744016 China Postdoctoral Science Foundation
- U20A20379, 82220108013, 82073148, 82200569 and 82102716 the National Natural Science Foundation of China
- U20A20379, 82220108013, 82073148, 82200569 and 82102716 the National Natural Science Foundation of China
- U20A20379, 82220108013, 82073148, 82200569 and 82102716 the National Natural Science Foundation of China
- U20A20379, 82220108013, 82073148, 82200569 and 82102716 the National Natural Science Foundation of China
- RCBS20210706092410024 and JCYJ20220530144815035 Shenzhen Excellent Science and Technology Innovation Talent Training Project
- RCBS20210706092410024 and JCYJ20220530144815035 Shenzhen Excellent Science and Technology Innovation Talent Training Project
- 2021B1212040006 Guangdong Provincial Key Laboratory of Digestive Cancer Research
- SZSM201911010 Sanming Project of Medicine in Shenzhen
- SZSM201911010 Sanming Project of Medicine in Shenzhen
- SZXK016 Shenzhen Key Medical Discipline Construction Fund
Collapse
Affiliation(s)
- Cuncan Deng
- Digestive Diseases Center, Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
- The Biobank, Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, 518107, Guangdong, People's Republic of China
| | - Mingyu Huo
- Digestive Diseases Center, Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
| | - Hongwu Chu
- Digestive Diseases Center, Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
| | - Xiaomei Zhuang
- Digestive Diseases Center, Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
| | - Guofei Deng
- Digestive Diseases Center, Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
| | - Wenchao Li
- Digestive Diseases Center, Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
| | - Hongfa Wei
- Digestive Diseases Center, Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
| | - Leli Zeng
- Digestive Diseases Center, Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China.
- The Biobank, Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, 518107, Guangdong, People's Republic of China.
| | - Yulong He
- Digestive Diseases Center, Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
| | - Huashan Liu
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jia Li
- Digestive Diseases Center, Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China.
| | - Changhua Zhang
- Digestive Diseases Center, Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China.
- Clinical Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China.
| | - Hengxing Chen
- Digestive Diseases Center, Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China.
- Clinical Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China.
| |
Collapse
|
5
|
Li S, Qiu C, Sun D, Yang S, Wang L. circNINL facilitates aerobic glycolysis, proliferation, invasion, and migration in lung cancer by sponging miR-3918 to mediate FGFR1 expression. Eur J Med Res 2024; 29:67. [PMID: 38245787 PMCID: PMC10799498 DOI: 10.1186/s40001-024-01636-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 01/02/2024] [Indexed: 01/22/2024] Open
Abstract
Previously characterized as an oncogenic player in breast cancer, the function of circular RNA NINL (circNINL) in lung cancer (LC) remained elusive. This study aimed to delineate the biological role of circNINL in LC and to unveil its potential molecular mechanisms. We discovered elevated expression levels of circNINL and Fibroblast Growth Factor Receptor 1 (FGFR1) concomitant with diminished expression of microRNA-3918 (miR-3918) in LC specimens. Knockdown of circNINL led to a marked decrease in cell proliferation, migration, invasion, and aerobic glycolysis, alongside an upsurge in apoptosis in LC cells. Either downregulation of miR-3918 or overexpression of FGFR1 mitigated the suppressive impact of circNINL knockdown on LC pathogenesis. Mechanistic studies validated that circNINL served as a competitive endogenous RNA for miR-3918, thus influencing FGFR1 expression. Further, in vivo experiments using nude mouse xenograft models underscored that silencing circNINL substantially curtailed tumor growth in LC. Collectively, these findings illuminate that circNINL exacerbates LC malignancy via the miR-3918/FGFR1 axis, a process integrally linked with the activation of aerobic glycolysis.
Collapse
Affiliation(s)
- Sai Li
- Department of Medical Oncology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), No. 19, Xiuhua Road, Xiuying District, Haikou City, 570311, Hainan, China
| | - Chun Qiu
- Department of Medical Oncology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), No. 19, Xiuhua Road, Xiuying District, Haikou City, 570311, Hainan, China
| | - DaTong Sun
- Department of Medical Oncology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), No. 19, Xiuhua Road, Xiuying District, Haikou City, 570311, Hainan, China
| | - ShengHui Yang
- Department of Medical Oncology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), No. 19, Xiuhua Road, Xiuying District, Haikou City, 570311, Hainan, China
| | - Lin Wang
- Department of Medical Oncology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), No. 19, Xiuhua Road, Xiuying District, Haikou City, 570311, Hainan, China.
| |
Collapse
|
6
|
Sahib AS, Fawzi A, Zabibah RS, Koka NA, Khudair SA, Muhammad FA, Hamad DA. miRNA/epithelial-mesenchymal axis (EMT) axis as a key player in cancer progression and metastasis: A focus on gastric and bladder cancers. Cell Signal 2023; 112:110881. [PMID: 37666286 DOI: 10.1016/j.cellsig.2023.110881] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/30/2023] [Accepted: 09/01/2023] [Indexed: 09/06/2023]
Abstract
The metastasis a major hallmark of tumors that its significant is not only related to the basic research, but clinical investigations have revealed that majority of cancer deaths are due to the metastasis. The metastasis of tumor cells is significantly increased due to EMT mechanism and therefore, inhibition of EMT can reduce biological behaviors of tumor cells and improve the survival rate of patients. One of the gaps related to cancer metastasis is lack of specific focus on the EMT regulation in certain types of tumor cells. The gastric and bladder cancers are considered as two main reasons of death among patients in clinical level. Herein, the role of EMT in regulation of their progression is evaluated with a focus on the function of miRNAs. The inhibition/induction of EMT in these cancers and their ability in modulation of EMT-related factors including ZEB1/2 proteins, TGF-β, Snail and cadherin proteins are discussed. Moreover, lncRNAs and circRNAs in crosstalk of miRNA/EMT regulation in these tumors are discussed and final impact on cancer metastasis and response of tumor cells to the chemotherapy is evaluated. Moreover, the impact of miRNAs transferred by exosomes in regulation of EMT in these cancers are discussed.
Collapse
Affiliation(s)
- Ameer S Sahib
- Department of Pharmacy, Al- Mustaqbal University College, 51001 Hilla, Iraq
| | - Amjid Fawzi
- Medical Technical College, Al-Farahidi University, Iraq
| | - Rahman S Zabibah
- Medical Laboratory Technology Department, College of Medical Technology, The Islamic University, Najaf, Iraq
| | - Nisar Ahmad Koka
- Department of English, Faculty of Languages and Translation, King Khalid University, Abha, Kingdom of Saudi Arabia.
| | | | | | - Doaa A Hamad
- Nursing Department, Hilla University College, Babylon, Iraq
| |
Collapse
|
7
|
Matsuoka T, Yashiro M. The Role of the Transforming Growth Factor-β Signaling Pathway in Gastrointestinal Cancers. Biomolecules 2023; 13:1551. [PMID: 37892233 PMCID: PMC10605301 DOI: 10.3390/biom13101551] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
Transforming growth factor-β (TGF-β) has attracted attention as a tumor suppressor because of its potent growth-suppressive effect on epithelial cells. Dysregulation of the TGF-β signaling pathway is considered to be one of the key factors in carcinogenesis, and genetic alterations affecting TGF-β signaling are extraordinarily common in cancers of the gastrointestinal system, such as hereditary nonpolyposis colon cancer and pancreatic cancer. Accumulating evidence suggests that TGF-β is produced from various types of cells in the tumor microenvironment and mediates extracellular matrix deposition, tumor angiogenesis, the formation of CAFs, and suppression of the anti-tumor immune reaction. It is also being considered as a factor that promotes the malignant transformation of cancer, particularly the invasion and metastasis of cancer cells, including epithelial-mesenchymal transition. Therefore, elucidating the role of TGF-β signaling in carcinogenesis, cancer invasion, and metastasis will provide novel basic insight for diagnosis and prognosis and the development of new molecularly targeted therapies for gastrointestinal cancers. In this review, we outline an overview of the complex mechanisms and functions of TGF-β signaling. Furthermore, we discuss the therapeutic potentials of targeting the TGF-β signaling pathway for gastrointestinal cancer treatment and discuss the remaining challenges and future perspectives on targeting this pathway.
Collapse
Affiliation(s)
| | - Masakazu Yashiro
- Molecular Oncology and Therapeutics, Osaka Metropolitan University Graduate School of Medicine, Osaka 5458585, Japan;
| |
Collapse
|
8
|
Malviya A, Bhuyan R. The recent advancements in circRNA research: From biogenesis to therapeutic interventions. Pathol Res Pract 2023; 248:154697. [PMID: 37506629 DOI: 10.1016/j.prp.2023.154697] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/14/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023]
Abstract
Circular RNAs (circRNAs) belong to the genre of long non-coding RNAs that are formed by special back-splicing events and are currently the molecule of interest for studies globally due their involvement in various ailments like diabetes, neurodegenerative disorders, cardio-vascular diseases and cancers. These class of highly stable RNAs participate in diverse cellular functionalities including microRNA (miRNA) sponging, ceRNA (competing endogenous RNA) activity or via exhibiting RNA binding protein (RBP) interactions. They are also known to regulate cancer progression both positively and negatively through various biological pathways such as, modulating the cell cycle and apoptotic pathways, epigenetic regulation, and translational and/or transcriptional regulations etc. Given its significance, a variety of computational tools and dedicated databases have been created for the identification, quantification, and differential expression of such RNAs in combination with sequencing approaches. In this review, we provide a comprehensive analysis of the numerous computational tools, pipelines, and online resources developed in recent years for the detection and annotation of circRNAs. We also summarise the most recent findings regarding the characteristics, functions, biological processes, and involvement of circRNAs in diseases. The review emphasises the significance of circRNAs as potential disease biomarkers and new treatment targets.
Collapse
Affiliation(s)
- Ayushi Malviya
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Banasthali, Tonk, Rajasthan 304022, India
| | - Rajabrata Bhuyan
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Banasthali, Tonk, Rajasthan 304022, India.
| |
Collapse
|
9
|
Baker A, Lorch J, VanderWeele D, Zhang B. Smart Nanocarriers for the Targeted Delivery of Therapeutic Nucleic Acid for Cancer Immunotherapy. Pharmaceutics 2023; 15:1743. [PMID: 37376190 DOI: 10.3390/pharmaceutics15061743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/09/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
A wide variety of therapeutic approaches and technologies for delivering therapeutic agents have been investigated for treating cancer. Recently, immunotherapy has achieved success in cancer treatment. Successful clinical results of immunotherapeutic approaches for cancer treatment were led by antibodies targeting immune checkpoints, and many have advanced through clinical trials and obtained FDA approval. A major opportunity remains for the development of nucleic acid technology for cancer immunotherapy in the form of cancer vaccines, adoptive T-cell therapies, and gene regulation. However, these therapeutic approaches face many challenges related to their delivery to target cells, including their in vivo decay, the limited uptake by target cells, the requirements for nuclear penetration (in some cases), and the damage caused to healthy cells. These barriers can be avoided and resolved by utilizing advanced smart nanocarriers (e.g., lipids, polymers, spherical nucleic acids, metallic nanoparticles) that enable the efficient and selective delivery of nucleic acids to the target cells and/or tissues. Here, we review studies that have developed nanoparticle-mediated cancer immunotherapy as a technology for cancer patients. Moreover, we also investigate the crosstalk between the function of nucleic acid therapeutics in cancer immunotherapy, and we discuss how nanoparticles can be functionalized and designed to target the delivery and thus improve the efficacy, toxicity, and stability of these therapeutics.
Collapse
Affiliation(s)
- Abu Baker
- Department of Medicine, Hematology/Oncology Division, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Jochen Lorch
- Department of Medicine, Hematology/Oncology Division, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - David VanderWeele
- Department of Medicine, Hematology/Oncology Division, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Bin Zhang
- Department of Medicine, Hematology/Oncology Division, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| |
Collapse
|
10
|
Ren Y, Pan K, Wang Y, Zhang S, Wang Y, Zhou X, Dan H, Chen Q, Ji N, Li J. circFANCA accelerates the malignant process of OSCC by modulating miR-34a/PA28γ signaling. Biochem Biophys Res Commun 2023; 665:45-54. [PMID: 37148744 DOI: 10.1016/j.bbrc.2023.04.084] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 04/24/2023] [Indexed: 05/08/2023]
Abstract
OBJECTIVES To investigate the upstream regulatory molecules of proteasomal activator 28γ (PA28γ), and explore its specific regulatory mechanism and potential clinical significance in OSCC. MATERIALS AND METHODS qPCR was used to examine miR-34a, circFANCA and PSME3 expression. Western blotting was adopted to detect PA28γ expression. Transwell experiments were conducted to evaluate OSCC cell migration and invasion ability. FISH was used to evaluate the subcellular localization of circFANCA and miR-34a, and RNA pull-down verified the interaction between them. The expression of circFANCA and miR-34a in clinical cohorts was assessed by ISH, and the results were subjected to survival analysis using Kaplan-Meier analysis. RESULTS Here, we proved that miR-34a expression is lower in highly aggressive OSCC tissues and cell lines. Notably, miR-34a can downregulate PA28γ expression and inhibit OSCC invasion and migration. Next, we confirmed that circFANCA promoted OSCC cell metastatic ability by sponging miR-34a. Importantly, interfering with miR-34a rescued the malignant progression of OSCC induced by silencing circFANCA. Finally, clinical data showed lower miR-34a expression and higher circFANCA expression were associated with poor prognosis in OSCC patients. CONCLUSION The circFANCA/miR-34a/PA28γ axis facilitates the metastasis of OSCC, and circFANCA and miR-34a have potential to serve as prognostic markers for OSCC patients.
Collapse
Affiliation(s)
- Yuan Ren
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, PR China; State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, PR China
| | - Keran Pan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Ying Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Shiyu Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Yimei Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Xikun Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, PR China
| | - HongXia Dan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Ning Ji
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Jing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, PR China.
| |
Collapse
|
11
|
Mahmoudian RA, Akhlaghipour I, Lotfi M, Shahidsales S, Moghbeli M. Circular RNAs as the pivotal regulators of epithelial-mesenchymal transition in gastrointestinal tumor cells. Pathol Res Pract 2023; 245:154472. [PMID: 37087995 DOI: 10.1016/j.prp.2023.154472] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/11/2023] [Accepted: 04/18/2023] [Indexed: 04/25/2023]
Abstract
Gastrointestinal (GI) cancers, as the most common human malignancies are always considered one of the most important health challenges in the world. Late diagnosis in advanced tumor stages is one of the main reasons for the high mortality rate and treatment failure in these patients. Therefore, investigating the molecular pathways involved in GI tumor progression is required to introduce the efficient markers for the early tumor diagnosis. Epithelial-mesenchymal transition (EMT) is one of the main cellular mechanisms involved in the GI tumor metastasis. Non-coding RNAs (ncRNAs) are one of the main regulatory factors in EMT process. Circular RNAs (circRNAs) are a group of covalently closed loop ncRNAs that have higher stability in body fluids compared with other ncRNAs. Considering the importance of circRNAs in regulation of EMT process, in the present review we discussed the role of circRNAs in EMT process during GI tumor invasion. It has been reported that circRNAs mainly affect the EMT process through the regulation of EMT-specific transcription factors and signaling pathways such as WNT, PI3K/AKT, TGF-β, and MAPK. This review can be an effective step in introducing a circRNA/EMT based diagnostic panel marker for the early tumor detection among GI cancer patients.
Collapse
Affiliation(s)
- Reihaneh Alsadat Mahmoudian
- Basic Sciences Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Cancer Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Iman Akhlaghipour
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Malihe Lotfi
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Meysam Moghbeli
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| |
Collapse
|
12
|
Xi J, Li Y, Zhang H, Bai Z. Dynamic variations of the gastric microbiota: Key therapeutic points in the reversal of Correa's cascade. Int J Cancer 2023; 152:1069-1084. [PMID: 36029278 DOI: 10.1002/ijc.34264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 08/10/2022] [Accepted: 08/15/2022] [Indexed: 01/21/2023]
Abstract
Correa's cascade is a dynamic process in the development of intestinal-type gastric cancer (GC), and its pathological features, gastric microbiota and interactions between microorganisms and their hosts vary at different developmental stages. The characteristics of cells, tissues and gastric microbiota before or after key therapeutic points are critical for monitoring malignant transformation and early tumour reversal. This review summarises the pathological features of gastric mucosa, characteristics of gastric microbiota, specific microbial markers, microbe-microbe interactions and microbe-host interactions at different stages in Correa's cascade. The markers related to each Correa's cascade point were analysed in detail. We attempted to identify key therapeutic points for early cancer reversal and provide a novel approach to reduce the incidence of GC and improve precise treatment.
Collapse
Affiliation(s)
- Jiahui Xi
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China.,Key Laboratory of Biotherapy and Regenerative Medicine, Gansu Province, Lanzhou, China
| | - Yonghong Li
- NHC Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumour, Gansu Provincial Hospital, Lanzhou, China
| | - Hui Zhang
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China.,General Surgery Department, The First Hospital of Lanzhou University, Lanzhou, China
| | - Zhongtian Bai
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China.,Key Laboratory of Biotherapy and Regenerative Medicine, Gansu Province, Lanzhou, China.,General Surgery Department, The First Hospital of Lanzhou University, Lanzhou, China
| |
Collapse
|
13
|
Wang C, Jiang H, Peng J, Weng D, Zhang Y, Zhou Y, Zhang Q. Circular RNA circ_SKA3 enhances gastric cancer development by targeting miR-520h. Histol Histopathol 2023; 38:317-328. [PMID: 36134741 DOI: 10.14670/hh-18-521] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
PURPOSE To explore the mechanisms of action of circ_SKA3 in gastric cancer (GC), which are still not fully understood. METHODS Subcellular localization assay was used to analyze the localization of circ_SKA3, and Actinomycin D assay was applied to confirm the stability of circ_SKA3. The levels of circ_SKA3, microRNA (miR)-520h, and cell division cycle 42 (CDC42) mRNA were gauged by quantitative real-time polymerase chain reaction (qRT-PCR). The protein levels of CDC42 and proliferating cell nuclear antigen (PCNA) were assessed by western blot. Cell proliferation, colony formation, cell cycle distribution, apoptosis, migration, and invasion were detected by 3-[4,5-dimethylthiazol-2-yl]-2, 5-diphenyltetrazolium bromide (MTT), 5-Ethynyl-2'-Deoxyuridine (EdU) incorporation, colony formation, flow cytometry, and transwell assays, respectively. Directed relationship between miR-520h and circ_SKA3 or CDC42 was verified by a dual-luciferase reporter assay. Mouse xenograft experiments were used to elucidate the impact of circ_SKA3 in vivo. RESULTS Overexpression of circ_SKA3 was validated in GC tissues and cells. The down-regulation of circ_SKA3 suppressed proliferation, cell cycle progression, colony formation, migration, invasion, and promoted cell apoptosis in vitro, as well as weakening tumor growth in vivo. Circ_SKA3 directly bound to miR-520h, and circ_SKA3 regulated CDC42 expression through miR-520h. Circ_SKA3 exerted regulatory effects on GC cell behaviors by inhibiting miR-520h. Furthermore, CDC42 was a functional target of miR-520h in regulating GC cell behaviors. CONCLUSION Our findings established a strong molecular mechanism, the miR-520h/CDC42 axis, at least in part, for the oncogenic role of circ_SKA3 in GC.
Collapse
Affiliation(s)
- Chuntao Wang
- Department of Thyroid Gastroenterology and Thoracic Surgery, Suizhou Central Hospital, Suizhou, Hubei, China
| | - Hao Jiang
- Department of Hepatopancreatobiliary Surgery, Suizhou Central Hospital, Suizhou, Hubei, China
| | - Jiaqun Peng
- Department of Thyroid Gastroenterology and Thoracic Surgery, Suizhou Central Hospital, Suizhou, Hubei, China
| | - Duanshun Weng
- Department of Thyroid Gastroenterology and Thoracic Surgery, Suizhou Central Hospital, Suizhou, Hubei, China
| | - Yu Zhang
- Department of Thyroid Gastroenterology and Thoracic Surgery, Suizhou Central Hospital, Suizhou, Hubei, China
| | - Yanxun Zhou
- Department of Gastroenterology, Suizhou Central Hospital, Suizhou, Hubei, China
| | - Qin Zhang
- Department of Thyroid Gastroenterology and Thoracic Surgery, Suizhou Central Hospital, Suizhou, Hubei, China.
| |
Collapse
|
14
|
The Tumorigenic Role of Circular RNA-MicroRNA Axis in Cancer. Int J Mol Sci 2023; 24:ijms24033050. [PMID: 36769372 PMCID: PMC9917898 DOI: 10.3390/ijms24033050] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/30/2023] [Accepted: 02/02/2023] [Indexed: 02/09/2023] Open
Abstract
Circular RNAs (circRNAs) are a class of endogenous RNAs that control gene expression at the transcriptional and post-transcriptional levels. Recent studies have increasingly demonstrated that circRNAs act as novel diagnostic biomarkers and promising therapeutic targets for numerous cancer types by interacting with other non-coding RNAs such as microRNAs (miRNAs). The miRNAs are presented as crucial risk factors and regulatory elements in cancer by regulating the expression of their target genes. Some miRNAs are derived from transposable elements (MDTEs) that can transfer their location to another region of the genome. Genetic interactions between miRNAs and circular RNAs can form complex regulatory networks with various carcinogenic processes that play critical roles in tumorigenesis and cancer progression. This review focuses on the biological regulation of the correlative axis among circular RNAs, miRNAs, and their target genes in various cancer types and suggests the biological importance of MDTEs interacting with oncogenic or tumor-suppressive circRNAs in tumor progression.
Collapse
|
15
|
Luo M, Deng X, Chen Z, Hu Y. Circular RNA circPOFUT1 enhances malignant phenotypes and autophagy-associated chemoresistance via sequestrating miR-488-3p to activate the PLAG1-ATG12 axis in gastric cancer. Cell Death Dis 2023; 14:10. [PMID: 36624091 PMCID: PMC9829716 DOI: 10.1038/s41419-022-05506-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 12/01/2022] [Accepted: 12/08/2022] [Indexed: 01/11/2023]
Abstract
Circular RNAs are key regulators in regulating the progression and chemoresistance of gastric cancer (GC), suggesting circular RNAs as potential therapeutic targets for GC. The roles of a novel circular RNA circPOFUT1 in GC are unknown. Here, we found that circPOFUT1 was upregulated in GC tissues and cells, and increased circPOFUT1 expression indicated poor prognosis. Overexpression of circPOFUT1 enhanced cell proliferation, migration, invasion and autophagy-associated chemoresistance in GC, which were suppressed by miR-488-3p overexpression. CircPOFUT1 reduced miR-488-3p expression via sponging miR-488-3p in GC cells. PLAG1 interacted with ATG12 and promoted its expression. MiR-488-3p bound to PLAG1 and suppressed the expression of PLAG1 and ATG12 in GC cells. Overexpression of circPOFUT1 enhanced autophagy-associated chemoresistance of GC cells in vivo, but it was inhibited by overexpression of miR-488-3p. Collectively, circPOFUT1 directly sponged miR-488-3p to activate the expression of PLAG1 and ATG12, thus enhancing malignant phenotypes and autophagy-associated chemoresistance in GC. Our findings show the potential of circPOFUT1 as biomarkers and targeting circPOFUT1 as a therapeutic strategy for GC.
Collapse
Affiliation(s)
- Ming Luo
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan Province, China
| | - Xiaofeng Deng
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan Province, China
| | - Zonglin Chen
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan Province, China
| | - Yongjun Hu
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan Province, China.
| |
Collapse
|
16
|
In silico analysis revealed the potential circRNA-miRNA-mRNA regulative network of non-small cell lung cancer (NSCLC). Comput Biol Med 2023; 152:106315. [PMID: 36495751 DOI: 10.1016/j.compbiomed.2022.106315] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 10/31/2022] [Accepted: 11/13/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND The primary source of death in the world is non-small cell lung cancer (NSCLC). However, NSCLCs pathophysiology is still not completely understood. The current work sought to study the differential expression of mRNAs involved in NSCLC and their interactions with miRNAs and circRNAs. METHODS We utilized three microarray datasets (GSE21933, GSE27262, and GSE33532) from the GEO NCBI database to identify the differentially expressed genes (DEGs) in NSCLC. We employed DAVID Functional annotation tool to investigate the underlying GO biological process, molecular functions, and KEGG pathways involved in NSCLC. We performed the Protein-protein interaction (PPI) network, MCODE, and CytoHubba analysis from Cytoscape software to identify the significant DEGs in NSCLC. We utilized miRnet to anticipate and build interaction between miRNAs and mRNAs in NSCLC and ENCORI to predict the miRNA-circRNA relationships and build the ceRNA regulatory network. Finally, we executed the gene expression and Kaplan-Meier survival analysis to validate the significant DEGs in the ceRNA network utilizing TCGA NSCLC and GEPIA data. RESULTS We revealed a total of 156 overlapped DEGs (47 upregulated and 109 downregulated genes) in NSCLC. The PPI network, MCODE, and CytoHubba analysis revealed 12 hub genes (cdkn3, rrm2, ccnb1, aurka, nuf2, tyms, kif11, hmmr, ccnb2, nek2, anln, and birc5) that are associated with NSCLC. We identified that these 12 genes encode 12 mRNAs that are strongly linked with 8 miRNAs, and further, we revealed that 1 circRNA was associated with this 5 miRNA. We constructed the ceRNAs network that contained 1circRNA-5miRNAs-7mRNAs. The expression of these seven significant genes in LUAD & LUSC (NSCLC) was considerably higher in the TCGA database than in normal tissues. Kaplan-Meier survival plot reveals that increased expression of these hub genes was related to a poor survival rate in LUAD. CONCLUSION Overall, we developed a circRNA-miRNA-mRNA regulation network to study the probable mechanism of NSCLC.
Collapse
|
17
|
Xu Q, Yao Y, Ni H, Gu J, Wang X, Jiang L, Wang B, Zhu X. Hsa‐circ‐0052001 promotes gastric cancer cell proliferation and invasion via the
MAPK
pathway. Cancer Med 2022; 12:7246-7257. [PMID: 36453441 PMCID: PMC10067131 DOI: 10.1002/cam4.5446] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 08/29/2022] [Accepted: 11/04/2022] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND Gastric cancer (GC) ranks fourth among the causes of death from malignant tumors in the world. Studies have implicated the dysregulation of circRNAs with GC. However, the relationship between hsa-circ-0052001 and GC is unclear. METHODS In our current study, we assessed the expression levels of hsa-circ-0052001 in GC cells and tissues using quantitative real-time PCR (qPCR). The role of hsa-circ-0052001 expression on the proliferation and invasion of GC cells was assessed using in vitro experiments. The role of hsa-circ-0052001 on the proliferation of GC cells was also analyzed using in vivo models. The pathways downstream of hsa-circ-0052001 were identified using bioinformatics analyses, western blot (WB) assays, and qRT-PCR. RESULTS We found that compared with normal gastric mucosa epithelial cells and adjacent paracancer tissues, hsa-circ-0052001 was overexpressed in GC cells and tissues. Also, the hsa-circ-0052001 level was linked to patient clinicopathological characteristics of GC. Cell proliferation and metastatic ability were inhibited in gastric cancer cells when hsa-circ-0052001 was knocked down in vitro and cancer growth in vivo. Mechanistically, hsa-circ-0052001 promoted the carcinogenesis of GC cells via the MAPK signal pathway. CONCLUSION Hsa-circ-0052001 functions as a tumor gene in promoting the progression of GC through MAPK pathway, which has provided a promising target for patients with GC.
Collapse
Affiliation(s)
- Qixuan Xu
- Department of General Surgery The First Affiliated Hospital of Soochow University Suzhou People's Republic of China
| | - Yizhou Yao
- Department of General Surgery The First Affiliated Hospital of Soochow University Suzhou People's Republic of China
| | - Haishun Ni
- Department of General Surgery The First Affiliated Hospital of Soochow University Suzhou People's Republic of China
| | - Jinrong Gu
- Department of General Surgery The First Affiliated Hospital of Soochow University Suzhou People's Republic of China
| | - Xuchao Wang
- Department of General Surgery The First Affiliated Hospital of Soochow University Suzhou People's Republic of China
| | - Linhua Jiang
- Department of General Surgery The First Affiliated Hospital of Soochow University Suzhou People's Republic of China
| | - Bin Wang
- Department of General Surgery The First Affiliated Hospital of Soochow University Suzhou People's Republic of China
| | - Xinguo Zhu
- Department of General Surgery The First Affiliated Hospital of Soochow University Suzhou People's Republic of China
| |
Collapse
|
18
|
circXRCC5 foster gastric cancer growth and metastasis by the HNRNPC/circXRCC5/miR-655-3p/RREB1/UBA2 positive feedback loop. Cancer Gene Ther 2022; 29:1648-1661. [PMID: 35661832 DOI: 10.1038/s41417-022-00482-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 03/22/2022] [Accepted: 05/13/2022] [Indexed: 02/04/2023]
Abstract
Gastric cancer (GC) is one of the most common malignancies, leading to millions of deaths each year. Here, we investigated the molecular mechanisms of GC, with a focus on circXRCC5/miR-655-3p/RREB1/UBA2 axis. circXRCC5 was identified in 62 paired cancer specimens and adjacent normal tissues by genome-wide bioinformatics analysis and verified by qRT-PCR and Sanger sequencing. Knockdown or exogenous expression of circXRCC5 was performed to validate the functional significance of circXRCC5 using both in vitro and in vivo assays, including CCK-8, colony formation, EdU incorporation, transwell system, as well as animal experiments. RNA immunoprecipitation, biotinylated RNA pull-down, ChIP, and dual-luciferase assays were employed to validate the regulatory network of circXRCC5/miR-655-3p/RREB1/UBA2. Frequently elevated circXRCC5 in GC tissues and cell lines was associated with poor prognosis of GC patients. Functionally, circXRCC5 overexpression facilitated GC cell proliferation, migration, and invasion, as well as promoted tumor growth and metastasis in vivo. Mechanistically, circXRCC5 served as a sponge of miR-655-3p to induce upregulation of RREB1. RREB1 was identified as a transcriptional activator of UBA2, thus contributing to GC tumorigenesis. Moreover, RNA binding protein (RBP) HNRNPC was proved to interact with circXRCC5 to promote circXRCC5 biogenesis. Collectively, circXRCC5 facilitates GC progression through the HNRNPC/circXRCC5/miR-655-3p/RREB1/UBA2 axis, which might bring novel therapeutic strategies for GC treatment.
Collapse
|
19
|
Xu CY, Zeng XX, Xu LF, Liu M, Zhang F. Circular RNAs as diagnostic biomarkers for gastric cancer: A comprehensive update from emerging functions to clinical significances. Front Genet 2022; 13:1037120. [PMID: 36386850 PMCID: PMC9650219 DOI: 10.3389/fgene.2022.1037120] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 10/10/2022] [Indexed: 08/30/2023] Open
Abstract
The incidence and mortality of gastric cancer ranks as a fouth leading cause of cancer death worldwide, especially in East Asia. Due to the lack of specific early-stage symptoms, the majority of patients in most developing nations are diagnosed at an advanced stage. Therefore, it is urgent to find more sensitive and reliable biomarkers for gastric cancer screening and diagnosis. Circular RNAs (circRNAs), a novel type of RNAs with covalently closed loops, are becoming a latest hot spot in the field of. In recent years, a great deal of research has demonstrated that abnormal expression of circRNAs was associated with the development of gastric cancer, and suggested that circRNA might serve as a potential biomarker for gastric cancer diagnosis. In this review, we summarize the structural characteristics, formation mechanism and biological function of circRNAs, and elucidate research progress and existing problems in early screening of gastric cancer.
Collapse
Affiliation(s)
- Chun-Yi Xu
- Zhejiang Chinese Medical University, Hangzhou, China
- Core Facility, Quzhou People’s Hospital, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou, China
| | - Xi-Xi Zeng
- Core Facility, Quzhou People’s Hospital, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou, China
- Yangtze Delta Region Institute (Quzhou), University of Electronic Science and Technology of China, Quzhou, China
| | - Li-Feng Xu
- Core Facility, Quzhou People’s Hospital, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou, China
- Yangtze Delta Region Institute (Quzhou), University of Electronic Science and Technology of China, Quzhou, China
| | - Ming Liu
- Yangtze Delta Region Institute (Quzhou), University of Electronic Science and Technology of China, Quzhou, China
- The Joint Innovation Center for Engineering in Medicine, Quzhou, China
- University of Electronic Science and Technology of China, Chengdu, China
| | - Feng Zhang
- Core Facility, Quzhou People’s Hospital, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou, China
- Yangtze Delta Region Institute (Quzhou), University of Electronic Science and Technology of China, Quzhou, China
| |
Collapse
|
20
|
Liu X, Zhang Y, Zhou S, Dain L, Mei L, Zhu G. Circular RNA: An emerging frontier in RNA therapeutic targets, RNA therapeutics, and mRNA vaccines. J Control Release 2022; 348:84-94. [PMID: 35649485 PMCID: PMC9644292 DOI: 10.1016/j.jconrel.2022.05.043] [Citation(s) in RCA: 100] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 05/17/2022] [Accepted: 05/25/2022] [Indexed: 12/13/2022]
Abstract
Circular RNAs (circRNA) is a class of natural (biogenic) or synthetic closed RNA without 5' or 3' ends. Meanwhile, their unique covalently-closed structures of circRNA prevent RNA degradation by exonucleases, thereby empowering them with high pharmaceutical stability and biostability relative to current standard-of-care linear mRNA. Natural circRNA can be non-coding RNAs as well as protein-coding RNA, the latter of which was recently discovered. The physiological functions of biogenic circRNAs, which largely remain elusive, include protein and gene sponges, cell activity modulators, and protein translation. The discovery that the circRNA levels can be correlated with some human diseases empowers circRNA with the potential as a novel type of disease biomarkers and a noncanonical class of therapeutic targets. Recently, synthetic circRNA have been engineered to explore their applications as a novel class of mRNA therapeutics and vaccines. In this review, we will discuss the current understanding of the biogenesis and physiological functions of natural circRNAs, the approaches to circRNA synthesis, and current research in the exploration of endogenous circRNAs as novel therapeutic targets and testing circRNAs as an emerging class of RNA therapeutics and vaccines.
Collapse
Affiliation(s)
- Xiang Liu
- Department of Pharmaceutics and Center for Pharmaceutical Engineering and Sciences, School of Pharmacy, Institute for Structural Biology and Drug Discovery, The Developmental Therapeutics Program, Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Yu Zhang
- Department of Pharmaceutics and Center for Pharmaceutical Engineering and Sciences, School of Pharmacy, Institute for Structural Biology and Drug Discovery, The Developmental Therapeutics Program, Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Shurong Zhou
- Department of Pharmaceutics and Center for Pharmaceutical Engineering and Sciences, School of Pharmacy, Institute for Structural Biology and Drug Discovery, The Developmental Therapeutics Program, Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Lauren Dain
- Department of Pharmaceutics and Center for Pharmaceutical Engineering and Sciences, School of Pharmacy, Institute for Structural Biology and Drug Discovery, The Developmental Therapeutics Program, Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Lei Mei
- Department of Pharmaceutics and Center for Pharmaceutical Engineering and Sciences, School of Pharmacy, Institute for Structural Biology and Drug Discovery, The Developmental Therapeutics Program, Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Guizhi Zhu
- Department of Pharmaceutics and Center for Pharmaceutical Engineering and Sciences, School of Pharmacy, Institute for Structural Biology and Drug Discovery, The Developmental Therapeutics Program, Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA.
| |
Collapse
|
21
|
Gao Z, Hu L, Chen F, He C, Hu B, Wang X. Hsa_circular RNA_0001013 exerts oncogenic effects in gastric cancer through the microRNA-136-TWSG1 axis. Am J Transl Res 2022; 14:4948-4963. [PMID: 35958507 PMCID: PMC9360872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Gastric cancer (GC) is one of the leading malignancies of the digestive system. Circular RNAs (circRNAs) are well-established to play critical regulatory roles in GC development. The current study sought to explore the effects and regulatory mechanism of circ_0001013 in the course of GC. METHODS First, differential circRNAs and related mechanisms in GC were predicted by microarray analysis. Circ_0001013, microRNA (miR)-136, and TWSG1 expression patterns were subsequently detected in GC clinical samples and cells using RT-qPCR. The relationship among circ_0001013, miR-136, and TWSG1 was further assessed by dual-luciferase reporter assay, biotin-coupled probe pull-down assay, and biotin-coupled miRNA capture. Based on gain- and loss-of-function assays, GC cell proliferation, migration, invasion, and the cell cycle and apoptosis were also measured by 5-ethynyl-2'-deoxyuridine (EdU) assay, scratch test, Transwell assay, and flow cytometry, respectively. Moreover, the effect of circ_0001013 on tumor growth was detected by tumor xenografting in nude mice. RESULTS Circ_0001013 was predicted to be up-regulated in GC by microarray profiling, which was confirmed by RT-qPCR detection in GC tissues and cells. miR-136 was poorly expressed, and TWSG1 was highly expressed in GC tissues. Mechanistically, circ_0001013 bound to miR-136, which negatively targeted TWSG1 in the GC cells. Silencing circ_0001013 or TWSG1 or over-expressing miR-136 led to decreased GC cell proliferation, migration, invasion, and cell cycle arrest and enhanced apoptosis. Furthermore, silencing circ_0001013 resulted in diminished TWSG1 expression and inhibited transplanted tumor growth in the nude mice. CONCLUSION Collectively, our findings indicated that circ_0001013 increased TWSG1 expression by binding to miR-136, thereby exerting oncogenic effects in GC.
Collapse
Affiliation(s)
- Zhaofeng Gao
- Faculty of Graduate Studies, Zhejiang Chinese Medical UniversityHangzhou 310053, Zhejiang, P. R. China
- Department of Surgery, The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000, Zhejiang, P. R. China
| | - Lingyu Hu
- Department of Surgery, The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000, Zhejiang, P. R. China
| | - Fei Chen
- Department of Surgery, The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000, Zhejiang, P. R. China
| | - Chunhua He
- Department of Surgery, The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000, Zhejiang, P. R. China
| | - Biwen Hu
- Department of Surgery, The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000, Zhejiang, P. R. China
| | - Xiaoguang Wang
- Faculty of Graduate Studies, Zhejiang Chinese Medical UniversityHangzhou 310053, Zhejiang, P. R. China
- Department of Surgery, The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000, Zhejiang, P. R. China
| |
Collapse
|
22
|
Yang S, Wang L, Gu L, Wang Z, Wang Y, Wang J, Zhang Y. Mesenchymal stem cell-derived extracellular vesicles alleviate cervical cancer by delivering miR-331-3p to reduce LIMS2 methylation in tumor cells. Hum Mol Genet 2022; 31:3829-3845. [PMID: 35708510 DOI: 10.1093/hmg/ddac130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 05/17/2022] [Accepted: 05/26/2022] [Indexed: 11/13/2022] Open
Abstract
This study is to investigate if extracellular vesicles (EVs) from bone marrow mesenchymal stem cells (BMSCs) deliver miR-331-3p to regulate LIMS2 methylation in cervical cancer cells. Cervical cancer cells were incubated with EVs from BMSCs with altered expression of miR-331-3p, DNMT3A or/and LIMS2 and then subjected to EdU, Transwell, flow cytometry and Western blotting analyses. Dual-luciferase reporter assay was conducted to verify the binding between miR-331-3p and DNMT3A. A xenograft model was established to evaluate the effect of BMSC-derived EV-miR-331-3p on cervical tumor growth. miR-331-3p was lowly and DNMT3A was highly expressed in cervical cancer. BMSC-derived EVs delivered miR-331-3p to control the behaviors of cervical cancer cells. miR-331-3p inhibited the expression of DNMT3A by binding DNMT3A mRNA. DNMT3A promoted LIMS2 methylation and reduced the expression of LIMS2. Overexpression of DNMT3A or silencing of LIMS2 in BMSCs counteracted the tumor suppressive effects of miR-331-3p. BMSC-derived EV-miR-331-3p also inhibited the growth of cervical tumors in vivo. BMSC-derived EVs alleviate cervical cancer partially by delivering miR-331-3p to reduce DNMT3A-dependent LIMS2 methylation in tumor cells.
Collapse
Affiliation(s)
- Shanshan Yang
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin 150081, P. R. China
| | - Le Wang
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin 150081, P. R. China
| | - Lina Gu
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin 150081, P. R. China
| | - Zhao Wang
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin 150081, P. R. China
| | - Yuan Wang
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin 150081, P. R. China
| | - Jianan Wang
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin 150081, P. R. China
| | - Yunyan Zhang
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin 150081, P. R. China
| |
Collapse
|
23
|
Lidocaine Suppresses Gastric Cancer Development Through Circ_ANO5/miR-21-5p/LIFR Axis. Dig Dis Sci 2022; 67:2244-2256. [PMID: 34050852 DOI: 10.1007/s10620-021-07055-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 05/11/2021] [Indexed: 01/01/2023]
Abstract
BACKGROUND Lidocaine has been manifested to exert anti-tumor role in gastric cancer (GC) progression. However, the action mechanism by which Lidocaine functions in GC has not been fully elucidated. AIM The study aimed to reveal the molecular mechanism of Lidocaine in GC progression. METHODS Cell clonogenicity and viability were assessed by colony formation and methyl thiazolyl tetrazolium assays, respectively. Transwell assay was employed to detect cell migration and invasion. Flow cytometry was implemented to monitor cell apoptosis. Relative expression of circular RNA ANO5 (circ_ANO5), microRNA (miR)-21-5p and Leukemia inhibitory factor receptor (LIFR) was examined by quantitative reverse transcription-polymerase chain reaction. Western blot assay was performed to analyze the levels of LIFR and cell metastasis-related proteins. The target relationship between miR-21-5p and circ_ANO5 or LIFR was confirmed by dual-luciferase reporter assay. In addition, xenograft model was established to explore the role of Lidocaine in vivo. RESULTS Lidocaine inhibited cell proliferation, migration and invasion, while promoted apoptosis of GC cells. Lidocaine upregulated circ_ANO5 and LIFR expression, but downregulated miR-21-5p expression in GC cells. Additionally, expression of circ_ANO5 and LIFR was decreased, while miR-21-5p expression was increased in GC cells. Circ_ANO5 depletion or miR-21-5p overexpression attenuated Lidocaine-induced anti-proliferative and anti-metastatic effects on GC cells. Circ_ANO5 could sponge miR-21-5p, and miR-21-5p targeted LIFR. Moreover, Lidocaine suppressed the tumor growth in vivo. CONCLUSION Lidocaine might GC cell malignancy by modulating circ_ANO5/miR-21-5p/LIFR axis, highlighting a novel insight for GC treatment.
Collapse
|
24
|
Yao B, Zhu S, Wei X, Chen MK, Feng Y, Li Z, Xu X, Zhang Y, Wang Y, Zhou J, Tang N, Ji C, Jiang P, Zhao SC, Qin C, Feng N. The circSPON2/miR-331-3p axis regulates PRMT5, an epigenetic regulator of CAMK2N1 transcription and prostate cancer progression. Mol Cancer 2022; 21:119. [PMID: 35624451 PMCID: PMC9137111 DOI: 10.1186/s12943-022-01598-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 05/18/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Prostate cancer (PCa) is the most frequently diagnosed malignancy in men, and its mechanism remains poorly understood. Therefore, it is urgent to discover potential novel diagnostic biomarkers and therapeutic targets that can potentially facilitate the development of efficient anticancer strategies. METHODS A series of functional in vitro and in vivo experiments were conducted to evaluate the biological behaviors of PCa cells. RNA pulldown, Western blot, luciferase reporter, immunohistochemistry and chromatin immunoprecipitation assays were applied to dissect the detailed underlying mechanisms. High-throughput sequencing was performed to screen for differentially expressed circRNAs in PCa and adjacent normal tissues. RESULTS Upregulation of protein arginine methyltransferase 5 (PRMT5) is associated with poor progression-free survival and the activation of multiple signaling pathways in PCa. PRMT5 inhibits the transcription of CAMK2N1 by depositing the repressive histone marks H4R3me2s and H3R8me2s on the proximal promoter region of CAMK2N1, and results in malignant progression of PCa both in vitro and in vivo. Moreover, the expression of circSPON2, a candidate circRNA in PCa tissues identified by RNA-seq, was found to be associated with poor clinical outcomes in PCa patients. Further results showed that circSPON2 induced PCa cell proliferation and migration, and that the circSPON2-induced effects were counteracted by miR-331-3p. Particularly, circSPON2 acted as a competitive endogenous RNA (ceRNA) of miR-331-3p to attenuate the repressive effects of miR-331-3p on its downstream target PRMT5. CONCLUSIONS Our findings showed that the epigenetic regulator PRMT5 aggravates PCa progression by inhibiting the transcription of CAMK2N1 and is modulated by the circSPON2/miR-331-3p axis, which may serve as a potential therapeutic target for patients with aggressive PCa.
Collapse
Affiliation(s)
- Bing Yao
- Department of Urology, The Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Department of Medical Genetics, Nanjing Medical University, Nanjing, 211166, China
| | - Sha Zhu
- Department of Urology, The Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Department of Medical Genetics, Nanjing Medical University, Nanjing, 211166, China
| | - Xiyi Wei
- The State Key Lab of Reproductive Medicine, Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Ming-Kun Chen
- Department of Urology, the Third Affiliated Hospital of Southern Medical University, Guangzhou, 510500, China
| | - Yangkun Feng
- Medical School of Nantong University, Nantong, 226001, China
| | - Zhimin Li
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Xinyu Xu
- Department of Urology, The Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Department of Medical Genetics, Nanjing Medical University, Nanjing, 211166, China
| | - Yuwei Zhang
- Department of Urology, The Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Department of Medical Genetics, Nanjing Medical University, Nanjing, 211166, China
| | - Yang Wang
- Department of Urology, The Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Department of Medical Genetics, Nanjing Medical University, Nanjing, 211166, China
| | - Jingwan Zhou
- Department of Urology, The Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Department of Medical Genetics, Nanjing Medical University, Nanjing, 211166, China
| | - Ningyuan Tang
- Department of Urology, The Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Department of Medical Genetics, Nanjing Medical University, Nanjing, 211166, China
| | - Chengjian Ji
- The State Key Lab of Reproductive Medicine, Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Peng Jiang
- Department of Urology, The Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Department of Medical Genetics, Nanjing Medical University, Nanjing, 211166, China
| | - Shan-Chao Zhao
- Department of Urology, the Third Affiliated Hospital of Southern Medical University, Guangzhou, 510500, China. .,Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Chao Qin
- The State Key Lab of Reproductive Medicine, Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.
| | - Ninghan Feng
- Department of Urology, The Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Department of Medical Genetics, Nanjing Medical University, Nanjing, 211166, China. .,Wuxi Clinical College, Nantong University, Wuxi, 214002, China.
| |
Collapse
|
25
|
Wu Z, Liu P, Zhang G. Identification of circRNA-miRNA-Immune-Related mRNA Regulatory Network in Gastric Cancer. Front Oncol 2022; 12:816884. [PMID: 35280778 PMCID: PMC8907717 DOI: 10.3389/fonc.2022.816884] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 01/24/2022] [Indexed: 12/31/2022] Open
Abstract
The pathogenesis of gastric cancer (GC) is still not fully understood. We aimed to find the potential regulatory network for ceRNA (circRNA–miRNA–immune-related mRNA) to uncover the pathological molecular mechanisms of GC. The expression profiles of circRNA, miRNA, and mRNA in gastric tissue from GC patients were downloaded from the Gene Expression Omnibus (GEO) datasets. Differentially expressed circRNAs, miRNAs, and immune-related mRNAs were filtered, followed by the construction of the ceRNA (circRNA–miRNA–immune-related mRNA) network. Functional annotation and protein–protein interaction (PPI) analysis of immune-related mRNAs in the network were performed. Expression validation of circRNAs and immune-related mRNAs was performed in the new GEO and TCGA datasets and in-vitro experiment. A total of 144 differentially expressed circRNAs, 216 differentially expressed miRNAs, and 2,392 differentially expressed mRNAs were identified in GC. Some regulatory pairs of circRNA–miRNA–immune-related mRNA were obtained, including hsa_circ_0050102–hsa-miR-4537–NRAS–Tgd cells, hsa_circ_0001013–hsa-miR-485-3p–MAP2K1–Tgd cells, hsa_circ_0003763–hsa-miR-145-5p–FGF10–StromaScore, hsa_circ_0001789–hsa-miR-1269b–MET–adipocytes, hsa_circ_0040573–hsa-miR-3686–RAC1–Tgd cells, and hsa_circ_0006089–hsa-miR-5584-3p–LYN–neurons. Interestingly, FGF10, MET, NRAS, RAC1, MAP2K1, and LYN had potential diagnostic value for GC patients. In the KEGG analysis, some signaling pathways were identified, such as Rap1 and Ras signaling pathways (involved NRAS and FGF10), Fc gamma R-mediated phagocytosis and cAMP signaling pathway (involved RAC1), proteoglycans in cancer (involved MET), T-cell receptor signaling pathway (involved MAP2K1), and chemokine signaling pathway (involved LYN). The expression validation of hsa_circ_0003763, hsa_circ_0004928, hsa_circ_0040573, FGF10, MET, NRAS, RAC1, MAP2K1, and LYN was consistent with the integrated analysis. In conclusion, the identified ceRNA (circRNA–miRNA–immune-related mRNA) regulatory network may be associated with the development of GC.
Collapse
Affiliation(s)
- Zhenhai Wu
- Department of Oncology, Zhejiang Hospital, Hangzhou, China
| | - Pengyuan Liu
- The Second School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ganlu Zhang
- Department of Oncology, Zhejiang Hospital, Hangzhou, China
| |
Collapse
|
26
|
Li C, Guan X, Jing H, Xiao X, Jin H, Xiong J, Ai S, Wang Y, Su T, Sun G, Fu T, Wang Y, Guo S, Liang P. Circular RNA circBFAR promotes glioblastoma progression by regulating a miR-548b/FoxM1 axis. FASEB J 2022; 36:e22183. [PMID: 35202487 DOI: 10.1096/fj.202101307r] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 12/30/2021] [Accepted: 01/18/2022] [Indexed: 01/04/2023]
Abstract
Glioblastoma multiforme (GBM) is the most common and aggressive type of tumor of the primary nervous system. Treatment options for GBM include surgery, chemotherapy, and radiation therapy; however, the clinical outcomes are poor, with a high rate of recurrence. An increasing number of studies have shown that circular RNAs (circRNAs) serve important roles in several types of cancer. Gene Expression Omnibus (GEO) database was utilized to identify the differentially expressed circRNAs and their biological functions. Then, we detected the circular RNA bifunctional apoptosis regulator (circBFAR) was significantly increased in three GEO datasets. However, the role of circBFAR has not been reported in GBM. In this study, the expression of circBFAR was significantly increased both in GBM tissues or cell lines and was negatively correlated with overall survival in patients with GBM. Knockdown of circBFAR inhibited proliferation and invasion both in vitro and in vivo. Increased expression of circBFAR resulted in a reduction of miR-548b expression in glioma cells. A luciferase reporter and RIP assay indicated that miR-548b was a direct target of circBFAR, and miR-548b may negatively regulate the expression of FoxM1. Rescue experiments showed that overexpression of FoxM1 could counter the effect of circBFAR silencing on the proliferation and invasion of glioma cell lines. Moreover, we identified that circBFAR regulates FoxM1 by interacting with miR-548b in glioma cells. In conclusion, the present study demonstrated that a circBFAR/miR-548b/FoxM1 axis regulates the development of GBM and highlights potentially novel therapeutic targets for the treatment of GBM.
Collapse
Affiliation(s)
- Chenlong Li
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Xue Guan
- Animal Laboratory Center, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hanguang Jing
- Breast Surgery, Lin Yi Famous Doctor Studio, Guangdong Provincial Hospital of Traditional Chinese Medicine, Guangzhou, China
| | - Xu Xiao
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Hua Jin
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Jinsheng Xiong
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Siqi Ai
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Yingjie Wang
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Tianqi Su
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Guiyin Sun
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Tianjiao Fu
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Yujie Wang
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Shouli Guo
- Animal Experiment Center, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Peng Liang
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, China
| |
Collapse
|
27
|
He Y, Zhang H, Zhang Y, Wang P, Zhu K, Ba Y. Comprehensive Characterization of Transforming Growth Factor Beta Receptor 1 in Stomach Adenocarcinoma Identifies a Prognostic Signature for Predicting Clinical Outcomes and Immune Infiltrates. Int J Gen Med 2022; 15:3375-3391. [PMID: 35368798 PMCID: PMC8965104 DOI: 10.2147/ijgm.s353879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 03/08/2022] [Indexed: 11/30/2022] Open
Abstract
Background Stomach adenocarcinoma (STAD) ranks as the third leading cause of cancer death worldwide. TGF‑β receptor 1 (TGFBR1), serving important roles in the TGF‑β family, the mechanisms whereby TGFBR1 governs tumor progression, immune cell infiltration in STAD remains unintelligible. Methods We used the TCGA, GEPIA, and HPA databases to explore TGFBR1 expression in STAD, the correlation between TGFBR1 expression and the clinical features. A receiver operating characteristic (ROC) curve and nomogram were constructed, and LASSO (the Least Absolute Shrinkage and Selection Operator)-selected features were used to build the TGFBR1 prognostic signature. GSEA is used to find the potential mechanism of TGFBR1 to promote the malignant process of STAD. We explored the influence of the TGFBR1 on the immune microenvironment of STAD through the TIMER2.0 and GEPIA database. Results In our study, TGFBR1 expression was significantly elevated in STAD and positively co-expression with pathologic stage, lymph node metastases (LNM) stage and histopathological grade. Nine factors with non-zero coefficients were identified by LASSO-selected features. Survival analysis revealed that patients with high TGFBR1 had shorter OS, FP, and PPS. Multivariate Cox analysis revealed that TGFBR1 was an independent prognostic factor for OS in STAD. The ROC analysis suggested that high diagnostic value with the AUC of TGFBR1 was 0.739. GSEA revealed that high TGFBR1 expression was correlated with pathway in cancer, MAPK signaling pathway, NOTCH signaling pathway, and VEGF-C production. ssGSEA showed that TGFBR1 is correlated with NK cells, Tem and Th17 cells. Furthermore, elevated TGFBR1 expression was found to be significantly correlated with several immune checkpoint and immune markers associated with immune cell subsets. Conclusion In summary, TGFBR1 could be a prognostic biomarker and an important regulator of immune cell infiltration in STAD. The present study revealed the probable underlying molecular mechanisms of TGFBR1 in STAD and provided a potential target for improving the prognosis.
Collapse
Affiliation(s)
- Yi He
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin’s Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060, People’s Republic of China
| | - Haiyang Zhang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin’s Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060, People’s Republic of China
| | - Yan Zhang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin’s Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060, People’s Republic of China
- Department of Gastroenterology, Tianjin Haihe Hospital, Tianjin, 300350, People’s Republic of China
| | - Peiyun Wang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin’s Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060, People’s Republic of China
| | - Kegan Zhu
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin’s Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060, People’s Republic of China
| | - Yi Ba
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin’s Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060, People’s Republic of China
- Correspondence: Yi Ba, Email
| |
Collapse
|
28
|
Gilani N, Arabi Belaghi R, Aftabi Y, Faramarzi E, Edgünlü T, Somi MH. Identifying Potential miRNA Biomarkers for Gastric Cancer Diagnosis Using Machine Learning Variable Selection Approach. Front Genet 2022; 12:779455. [PMID: 35082831 PMCID: PMC8785967 DOI: 10.3389/fgene.2021.779455] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 11/22/2021] [Indexed: 01/21/2023] Open
Abstract
Aim: This study aimed to accurately identification of potential miRNAs for gastric cancer (GC) diagnosis at the early stages of the disease. Methods: We used GSE106817 data with 2,566 miRNAs to train the machine learning models. We used the Boruta machine learning variable selection approach to identify the strong miRNAs associated with GC in the training sample. We then validated the prediction models in the independent sample GSE113486 data. Finally, an ontological analysis was done on identified miRNAs to eliciting the relevant relationships. Results: Of those 2,874 patients in the training the model, there were 115 (4%) patients with GC. Boruta identified 30 miRNAs as potential biomarkers for GC diagnosis and hsa-miR-1343-3p was at the highest ranking. All of the machine learning algorithms showed that using hsa-miR-1343-3p as a biomarker, GC can be predicted with very high precision (AUC; 100%, sensitivity; 100%, specificity; 100% ROC; 100%, Kappa; 100) using with the cut-off point of 8.2 for hsa-miR-1343-3p. Also, ontological analysis of 30 identified miRNAs approved their strong relationship with cancer associated genes and molecular events. Conclusion: The hsa-miR-1343-3p could be introduced as a valuable target for studies on the GC diagnosis using reliable biomarkers.
Collapse
Affiliation(s)
- Neda Gilani
- Department of Statistics and Epidemiology, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Arabi Belaghi
- Department of Mathematics, Uppsala University, Uppsala, Sweden
- Department of Statistics, Faculty of Mathematical Science, University of Tabriz, Tabriz, Iran
| | - Younes Aftabi
- Tuberculosis and Lung Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elnaz Faramarzi
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Tuba Edgünlü
- Department of Medical Biology, Faculty of Medicine, Muğla Sıtkı Koçman University, Muğla, Turkey
| | - Mohammad Hossein Somi
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
29
|
He Y, Zhang Z, Wang Z, Jiao Y, Kang Q, Li J. Downregulation of circ-SFMBT2 blocks the development of gastric cancer by targeting the miR-885-3p/CHD7 pathway. Anticancer Drugs 2022; 33:e247-e259. [PMID: 34387601 DOI: 10.1097/cad.0000000000001195] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Accumulating evidence insists that circular RNAs (circRNAs) play important roles in the development of human cancers, including gastric cancer. This study aimed to investigate the role of circ-SFMBT2 and provide a potential mechanism to explain its function. The expression of circ-SFMBT2, miR-885-3p and chromodomain-helicase-DNA-binding protein 7 (CHD7) mRNA was determined by quantitative real-time PCR (qRT-PCR), and the protein level of CHD7 was determined by western blot. To investigate the function of circ-SFMBT2 in vitro, the effects of circ-SFMBT2 on cell viability, colony formation, apoptosis, migration and invasion were assessed using cell counting kit-8 assay, colony formation assay, flow cytometry assay, wounding healing assay and transwell assay, respectively. The indicators of oxidative stress were assessed using matched kits. Besides, the function of circ-SFMBT2 was also investigated in animal models. The relationship between miR-885-3p and circ-SFMBT2 or CHD7 was verified by dual-luciferase reporter assay and RNA immunoprecipitation assay. Circ-SFMBT2 and CHD7 were upregulated, whereas miR-885-3p was downregulated in gastric cancer tissues and cells. In functional assay, circ-SFMBT2 knockdown suppressed gastric cancer cell viability, colony formation ability, migration, invasion and oxidative stress but induced apoptosis, and circ-SFMBT2 downregulation also blocked tumor growth in vivo. In mechanism analysis, circ-SFMBT2 regulated CHD7 expression by sponging its target miRNA, miR-885-3p. Rescue experiments manifested that miR-885-3p inhibition reversed the effects of circ-SFMBT2 knockdown, and CHD7 overexpression abolished the antitumor role of miR-885-3p overexpression. Moreover, circ-SFMBT2 knockdown inactivated the Wnt/β-catenin signaling pathway. Circ-SFMBT2 downregulation repressed the development of gastric cancer partially by controlling the miR-885-3p/CHD7 axis, which might be a novel strategy to inhibit gastric cancer progression.
Collapse
Affiliation(s)
- Yuqi He
- Department of Oncology, The First People's Hospital of Lanzhou City, Lanzhou City, Gansu Province, China
| | | | | | | | | | | |
Collapse
|
30
|
Lu Y, Li K, Gao Y, Liang W, Wang X, Chen L. CircRNAs in gastric cancer: current research and potential clinical implications. FEBS Lett 2021; 595:2644-2654. [PMID: 34561854 DOI: 10.1002/1873-3468.14196] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 09/04/2021] [Accepted: 09/14/2021] [Indexed: 12/11/2022]
Abstract
Gastric cancer (GC) has a dismal prognosis and is also one of the most commonly diagnosed malignancies worldwide. circRNAs are covalently closed circular RNA molecules without 5'-cap and a 3'-tail, currently listed among the broad noncoding RNA family. circRNAs participate in a variety of pathophysiological processes relevant to human diseases, especially malignancies, including GC. Compelling evidence has shown that circRNAs can function by sponging miRNAs, interacting with RNA binding proteins, and encoding proteins or peptides. Yet, our current understanding of these RNA circles remains very limited. Here, we overview the biogenesis, characteristics, functions, and degradation of circRNAs. Moreover, we give an account of the circRNAs that have been linked with GC, describing their functions and mechanisms of action in the context of GC. Next, we discuss the potential value of circRNAs as diagnostic or prognostic GC biomarkers and summarize future prospects, important questions, and challenges of circRNA-based therapeutics.
Collapse
Affiliation(s)
- Yixun Lu
- Medical School of Chinese PLA, Beijing, China
- Department & Institute of General Surgery, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Kai Li
- Medical School of Chinese PLA, Beijing, China
- Department & Institute of General Surgery, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yunhe Gao
- Department & Institute of General Surgery, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Wenquan Liang
- Department & Institute of General Surgery, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xinxin Wang
- Department & Institute of General Surgery, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Lin Chen
- Department & Institute of General Surgery, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| |
Collapse
|
31
|
Liu Z, Wang Y, Ding Y. Circular RNA circPRKDC promotes tumorigenesis of gastric cancer via modulating insulin receptor substrate 2 (IRS2) and mediating microRNA-493-5p. Bioengineered 2021; 12:7631-7643. [PMID: 34605348 PMCID: PMC8806545 DOI: 10.1080/21655979.2021.1981798] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
CircPRKDC has been disclosed to participate in the tumorigenesis of serval tumors, but the regulatory mechanisms of circPRKDC in GC are still unknown. CircPRKDC, miR-493-5p, and insulin receptor substrate 2 (IRS2) levels were tested by RT-qPCR. The epithelial-mesenchymal transition (EMT)-related protein levels were evaluated via western blot. The cell viability, migration and invasion were evaluated through CCK-8 and Transwell assays. Luciferase reporter and RIP assays were employed to confirm the binding ability between miR-493-5p and circPRKDC or IRS2. CircPRKDC was upregulated in GC samples, and circPRKDC silencing restrained GC cell viability, metastasis, and EMT and suppressed GC tumor growth. Besides, miR-493-5p was a target of circPRKDC, and the repressive impact of circPRKDC knockdown on GC development was neutralized by miR-493-5p inhibition. Moreover, miR-493-5p targeted IRS2 and IRS2 addition rescued the effects of circPRKDC depletion on GC progression. Finally, circPRKDC knockdown could regulate IRS2 expression by targeting miR-493-5p. These results elaborated that circPRKDC accelerated GC development via sponging miR-493-5p and increasing IRS2, which might provide novel potential targets for GC treatment.
Collapse
Affiliation(s)
- Zhipeng Liu
- Department of Emergency General Surgery, Weifang People's Hospital, Weifang, China
| | - Yangang Wang
- Department of Emergency General Surgery, Weifang People's Hospital, Weifang, China
| | - Yunlong Ding
- Department of Emergency General Surgery, Weifang People's Hospital, Weifang, China
| |
Collapse
|
32
|
Ma Y, Ren Y, Wen H, Cui C. circCOL1A1 Promotes the Progression of Gastric Cancer Cells through Sponging miR-145 to Enhance RABL3 Expression. J Immunol Res 2021; 2021:6724854. [PMID: 34631898 PMCID: PMC8494588 DOI: 10.1155/2021/6724854] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/19/2021] [Indexed: 12/09/2022] Open
Abstract
Circular RNA has been reported to be a new noncoding RNA which plays important roles in tumor progression. One of the most common functions of circular RNA is to regulate microRNA expression by acting as a microRNA sponge. However, the circular RNA expression profile and function remain mostly unclear in gastric cancer. In the study, we explored the expression and function of circCOL1A1 (hsa_circ_0044556) in gastric cancer. We performed RT-PCR with divergent primers, mRNA stability assay, and RNase R digestion assay to characterize circCOL1A1 in gastric cancer cell lines. qRT-PCR was applied to detect the level of circCOL1A1 in both gastric cancer cell lines and tissues. Gain- and loss-of-function studies were carried out to detect the influence of circCOL1A1 on gastric cancer cells by performing CCK8, migration, and invasion assays. The regulation of the downstream genes was identified by qRT-PCR, western blot assay, dual luciferase assay, and RNA pull-down assay. The results showed that circCOL1A1 was highly expressed in both gastric cancer cells and tissues. Silence of circCOL1A1 inhibited the proliferation, migration, and invasion of gastric cancer cells. circCOL1A1 regulated the expression of miR-145 by acting as a microRNA sponge, and the influence of circCOL1A1 could be abrogated by miR-145 mimics. Our research shows that miR-145 plays its functions through targeting and regulating RABL3. Inhibition of circCOL1A1/miR-145/RABL3 could effectively suppress gastric cancer cell proliferation, migration, and invasion. circCOL1A1 also promote the transformation of M1 into M2 macrophage. Our study identified circCOL1A1 as a novel oncogenic circRNA and will provide more information for gastric cancer therapy.
Collapse
Affiliation(s)
- Yue Ma
- Department of Gastroenterology, Hospital of Chengdu University of Traditional Chinese Medicine, No. 39 Shi-er-qiao Road, Chengdu 610072, Sichuan Province, China
| | - Yanyi Ren
- Department of Gastroenterology, Hospital of Chengdu University of Traditional Chinese Medicine, No. 39 Shi-er-qiao Road, Chengdu 610072, Sichuan Province, China
| | - Huitao Wen
- Department of Nephrology, Chengdu First People's Hospital, No. 18 Norn Vientiane Road, Chengdu, Hi-Tech Zone 610041, Sichuan Province, China
| | - Chengcheng Cui
- Department of Pediatrics, Huai'an Second People's Hospital, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, China
| |
Collapse
|
33
|
Zhou X, Jiang J, Guo S. Hsa_circ_0004712 downregulation attenuates ovarian cancer malignant development by targeting the miR-331-3p/FZD4 pathway. J Ovarian Res 2021; 14:118. [PMID: 34507595 PMCID: PMC8434704 DOI: 10.1186/s13048-021-00859-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 08/10/2021] [Indexed: 01/22/2023] Open
Abstract
Background Circular RNAs (circRNAs) are gradually reported to be implicated in the development of malignant tumors, including ovarian cancer (OC). This paper intended to explore the function and action mechanism of hsa_circ_0004712 in OC. Results In our results, hsa_circ_0004712 was aberrantly overexpressed in OC tissues and cells. Downregulation of hsa_circ_0004712 impaired OC cell proliferation, colony formation, invasion and migration, and accelerated apoptosis. Hsa_circ_0004712 directly targeted miR-331-3p whose inhibitors reversed the effects of hsa_circ_0004712 downregulation. FZD4 was targeted by miR-331-3p, and hsa_circ_0004712 could positively regulated FZD4 expression by targeting miR-331-3p. The anti-tumor effects of miR-331-3p restoration were reversed by FZD4 overexpression. Downregulation of hsa_circ_0004712 also impaired tumor development in vivo by regulating miR-331-3p and FZD4. Conclusion In conclusion, hsa_circ_0004712 deficiency repressed OC development by mediating the miR-331-3p/FZD4 pathway, predicting that hsa_circ_0004712 was a promising biomarker for OC diagnosis and therapy. Supplementary Information The online version contains supplementary material available at 10.1186/s13048-021-00859-0.
Collapse
Affiliation(s)
- Xuan Zhou
- Reproductive Medicine Center, Shenyang Women's and Children's Hospital, No. 87 Danan Street, Shenhe District, Shenyang, 110000, Liaoning, China
| | - Jinchi Jiang
- Department of Radiology, Shenyang Women's and Children's Hospital, Shenyang, Liaoning, China
| | - Shuaishuai Guo
- Reproductive Medicine Center, Shenyang Women's and Children's Hospital, No. 87 Danan Street, Shenhe District, Shenyang, 110000, Liaoning, China.
| |
Collapse
|
34
|
Ye J, Li J, Zhao P. Roles of ncRNAs as ceRNAs in Gastric Cancer. Genes (Basel) 2021; 12:genes12071036. [PMID: 34356052 PMCID: PMC8305186 DOI: 10.3390/genes12071036] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/28/2021] [Accepted: 06/28/2021] [Indexed: 01/19/2023] Open
Abstract
Although ignored in the past, with the recent deepening of research, significant progress has been made in the field of non-coding RNAs (ncRNAs). Accumulating evidence has revealed that microRNA (miRNA) response elements regulate RNA. Long ncRNAs, circular RNAs, pseudogenes, miRNAs, and messenger RNAs (mRNAs) form a competitive endogenous RNA (ceRNA) network that plays an essential role in cancer and cardiovascular, neurodegenerative, and autoimmune diseases. Gastric cancer (GC) is one of the most common cancers, with a high degree of malignancy. Considerable progress has been made in understanding the molecular mechanism and treatment of GC, but GC’s mortality rate is still high. Studies have shown a complex ceRNA crosstalk mechanism in GC. lncRNAs, circRNAs, and pseudogenes can interact with miRNAs to affect mRNA transcription. The study of the involvement of ceRNA in GC could improve our understanding of GC and lead to the identification of potential effective therapeutic targets. The research strategy for ceRNA is mainly to screen the different miRNAs, lncRNAs, circRNAs, pseudogenes, and mRNAs in each sample through microarray or sequencing technology, predict the ceRNA regulatory network, and, finally, conduct functional research on ceRNA. In this review, we briefly discuss the proposal and development of the ceRNA hypothesis and the biological function and principle of ceRNAs in GC, and briefly introduce the role of ncRNAs in the GC’s ceRNA network.
Collapse
Affiliation(s)
- Junhong Ye
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing 400716, China;
| | - Jifu Li
- College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400716, China;
| | - Ping Zhao
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing 400716, China;
- Correspondence: ; Tel.: +86-23-6825-0885
| |
Collapse
|
35
|
Qiang F, Li J. CircCSNK1G1 Contributes to the Tumorigenesis of Gastric Cancer by Sponging miR-758 and Regulating ZNF217 Expression. Cancer Manag Res 2021; 13:5027-5038. [PMID: 34234548 PMCID: PMC8253995 DOI: 10.2147/cmar.s305767] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 05/07/2021] [Indexed: 12/29/2022] Open
Abstract
Background Increasing evidence indicates that circular RNAs (circRNAs) act as vital regulators in various cancers. Nevertheless, the effect of circCSNK1G1 on gastric cancer (GC) is still unknown. Methods The mRNA levels of circCSNK1G1, miR-758, and ZNF217 were measured by RT-qPCR. The protein levels of ZNF217 were evaluated by Western blotting. Cell migration, invasion, proliferation, and apoptosis were detected by Transwell, CCK-8, and flow cytometry assays. The association between miR-758 and circCSNK1G1/ZNF217 was confirmed by RIP and luciferase reporter assays. Xenograft assay was employed for in vivo experiment. Results In the current study, it was demonstrated that the expression levels of circCSNK1G1 and ZNF217 were upregulated in GC tissues and cells, while the level of miR-758 was declined. Furthermore, functional assays indicated that circCSNK1G1 depletion suppressed GC progression in vitro and in vivo. In addition, circCSNK1G1 directly interacted with miR-758, and the supplementation of miR-758 suppressed the development of GC, which was abolished following pcDNA3.1-circCSNK1G1 transfection. Then, we explored the downstream mechanism of miR-758 and found that miR-758 could target the 3'UTR of ZNF217 mRNA. The overexpression of miR-758 neutralized the ZNF217-mediated effects on facilitating the progression of GC. Finally, we revealed that circCSNK1G1 could upregulate ZNF217 expression by sponging miR-758 in GC cells. Conclusion Our study revealed that circCSNK1G1 accelerated GC progression via the miR-758/ZNF217 axis, suggesting that circCSNK1G1 might be a potential biomarker for GC diagnosis and treatment.
Collapse
Affiliation(s)
- Feng Qiang
- Department of Gastroenterology, the First People's Hospital of Huzhou, Huzhou, 313000, People's Republic of China
| | - Jingjing Li
- Department of Gastroenterology, the First People's Hospital of Huzhou, Huzhou, 313000, People's Republic of China
| |
Collapse
|
36
|
Wang Q, Zheng D, Li Y, Zhang Y, Sui R, Chen Y, Liang H, Shi J, Pan R, Xu X, Sun D. Circular RNA circ_0001588 sponges miR-211-5p to facilitate the progression of glioblastoma via up-regulating YY1 expression. J Gene Med 2021; 23:e3371. [PMID: 34105224 DOI: 10.1002/jgm.3371] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/04/2021] [Accepted: 06/04/2021] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND As the most common and detrimental brain tumor with high invasiveness and poor prognosis, glioblastoma (GBM) has severely threatened people's health globally. Therefore, it is of great importance and necessary to identify the molecular mechanisms involved in tumorigenesis and development, thus contributing to potential therapeutic targets and strategies. METHODS The level of circ_0001588 was detected in 68 pairs of GBM tissues and adjacent normal tissues and human glioma cell lines via a real-time quantitative reverse transcriptase polymerase chain reaction (qRT-PCR). Then, the effect of circ_0001588 on the proliferation, migration and invasion of glioma cells was evaluated. In addition, potential downstream targets of circ_0001588 were forecasted by circBANK and Starbase. Their interaction was confirmed by introducing luciferase reporter assays. Moreover, sh-circ_0001588 transfected U251 cells were used to form tumors in vivo. Finally, the functional mechanism of circ_0001588 was identified by qRT-PCR, western blotting, xenograft and immunohistochemistry (IHC) assays. RESULTS The expression of circ_0001588 is markedly up-regulated in GBM tissues and human gliomas cells. Additionally, increased expression of circ_0001588 is positively relevant with poor survival in GBM patients. The down-regulation of circ_0001588 distinctly inhibits the proliferation, migration and invasion of GBM in vitro, as well as tumor growth in vivo. Moreover, knockdown of circ_0001588 reduces the tumor volume and weight, enhances the relative IHC staining index of E-cadherin and decreases the relative IHC staining index of Ki-67, Yin Yang 1 (YY1) and vinmentin in vivo. Mechanistically, circ_0001588 locates in the cytoplasm, which is directly bound with miR-211-5p. Furthermore, circ_0001588 can positively regulate YY1 via sponging miR-211-5p. Moreover, circ_0001588 accelerates the proliferation, migration and invasion of GBM by modulating miR-211-5p/YY1 signaling. CONCLUSIONS These results illustrate a new circ_0001588/miR-211-5p/YY1 regulatory signaling axis in GBM.
Collapse
Affiliation(s)
- Qian Wang
- Radiation Oncology Department of Gastrointestinal & Urinary & Musculoskeletal, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Insititute, Shenyang, Liaoning Province, 110042, PR China
| | - Dahai Zheng
- Department of Neurosurgery, Shunde Hospital, Southern Medical University, The First People's Hospital of Shunde, Foshan, Guangdong Province, 528300, PR China
| | - Yuhan Li
- Department of Neurosurgery, Shanghai Blue Cross Brain Hospital affiliated to Tongji University, Shanghai, 201101, PR China
| | - Ye Zhang
- Department of Neurosurgery, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Insititute, Shenyang, Liaoning Province, 110042, PR China
| | - Rui Sui
- Department of Neurosurgery, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Insititute, Shenyang, Liaoning Province, 110042, PR China
| | - Yi Chen
- Department of Neurosurgery, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Insititute, Shenyang, Liaoning Province, 110042, PR China
| | - Haiyang Liang
- Department of Neurosurgery, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Insititute, Shenyang, Liaoning Province, 110042, PR China
| | - Ji Shi
- Department of Neurosurgery, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Insititute, Shenyang, Liaoning Province, 110042, PR China
| | - Renlong Pan
- Department of Neurosurgery, Shanghai Blue Cross Brain Hospital affiliated to Tongji University, Shanghai, 201101, PR China
| | - Xiaobing Xu
- Department of Neurosurgery, Shunde Hospital, Southern Medical University, The First People's Hospital of Shunde, Foshan, Guangdong Province, 528300, PR China
| | - Deyu Sun
- Radiation Oncology Department of Gastrointestinal & Urinary & Musculoskeletal, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Insititute, Shenyang, Liaoning Province, 110042, PR China
| |
Collapse
|
37
|
He AT, Liu J, Li F, Yang BB. Targeting circular RNAs as a therapeutic approach: current strategies and challenges. Signal Transduct Target Ther 2021; 6:185. [PMID: 34016945 PMCID: PMC8137869 DOI: 10.1038/s41392-021-00569-5] [Citation(s) in RCA: 249] [Impact Index Per Article: 83.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 02/28/2021] [Accepted: 03/16/2021] [Indexed: 02/04/2023] Open
Abstract
Significant progress has been made in circular RNA (circRNA) research in recent years. Increasing evidence suggests that circRNAs play important roles in many cellular processes, and their dysregulation is implicated in the pathogenesis of various diseases. CircRNAs are highly stable and usually expressed in a tissue- or cell type-specific manner. Therefore, they are currently being explored as potential therapeutic targets. Gain-of-function and loss-of-function approaches are typically performed using circRNA expression plasmids and RNA interference-based strategies, respectively. These strategies have limitations that can be mitigated using nanoparticle and exosome delivery systems. Furthermore, recent developments show that the cre-lox system can be used to knockdown circRNAs in a cell-specific manner. While still in the early stages of development, the CRISPR/Cas13 system has shown promise in knocking down circRNAs with high specificity and efficiency. In this review, we describe circRNA properties and functions and highlight their significance in disease. We summarize strategies that can be used to overexpress or knockdown circRNAs as a therapeutic approach. Lastly, we discuss major challenges and propose future directions for the development of circRNA-based therapeutics.
Collapse
Affiliation(s)
- Alina T. He
- grid.17063.330000 0001 2157 2938Sunnybrook Research Institute, Toronto, ON Canada
| | - Jinglei Liu
- Department of Bioinformatics, ATCGene Inc, Guangzhou, China
| | - Feiya Li
- grid.17063.330000 0001 2157 2938Sunnybrook Research Institute, Toronto, ON Canada ,grid.17063.330000 0001 2157 2938Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON Canada
| | - Burton B. Yang
- grid.17063.330000 0001 2157 2938Sunnybrook Research Institute, Toronto, ON Canada ,grid.17063.330000 0001 2157 2938Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON Canada
| |
Collapse
|
38
|
Fan Y, Liu M, Liu A, Cui N, Chen Z, Yang Q, Su A. Depletion of Circular RNA circ_CORO1C Suppresses Gastric Cancer Development by Modulating miR-138-5p/KLF12 Axis. Cancer Manag Res 2021; 13:3789-3801. [PMID: 34007212 PMCID: PMC8123969 DOI: 10.2147/cmar.s290629] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 02/05/2021] [Indexed: 12/24/2022] Open
Abstract
Background Gastric cancer (GC) is a common and deadly malignancy in the world. CircRNAs have emerged as important regulators in human diseases, including GC. In this work, we intended to explore the role of circ_CORO1C in GC progression and potential mechanism. Methods Quantitative real-time PCR (qRT-PCR) or Western blot assay was performed to examine the expression of circRNA coronin-like actin-binding protein 1C (circ_CORO1C), microRNA (miR)-138-5p and Krueppel-like factor 12 (KLF12) in clinical samples and cells. Cell colony formation ability and viability were measured by colony formation assay and methyl thiazolyl tetrazolium (MTT) assay, respectively. Expression of cell proliferation and epithelia-mesenchymal transition (EMT) biomarker was detected by Western blot analysis. And cell metastasis, including migration and invasion, and apoptosis were analyzed via Transwell assay and flow cytometry, respectively. Target relationship among circ_CORO1C, miR-138-5p and KLF12 was validated by dual-luciferase reporter assay. The in vivo role of circ_CORO1C was investigated by tumor xenograft assay. Results Circ_CORO1C and KLF12 were upregulated, while miR-138-5p was downregulated in GC tissues and cells. Circ_CORO1C knockdown suppressed colony formation ability, viability, migration, invasion and EMT in GC cells, while promoted cell apoptosis in vitro. Circ_CORO1C targeted miR-138-5p, the inhibition of which could attenuate silenced circ_CORO1C-induced inhibitory effects on GC progression. MiR-138-5p repressed the aggressive malignant behaviors of GC cells by directly targeting KLF12. Circ_CORO1C deficiency inhibited GC tumor growth in vivo. Conclusion Depletion of circ_CORO1C suppressed GC progression by regulating miR-138-5p/KLF12 axis, offering a potential molecular target for GC therapy.
Collapse
Affiliation(s)
- Yongqiang Fan
- Department of Gastroenterology, Sunshine Union Hospital, Weifang City, Shandong Province, People's Republic of China
| | - Min Liu
- Department of Gastroenterology, Sunshine Union Hospital, Weifang City, Shandong Province, People's Republic of China
| | - Anquan Liu
- Department of Gastroenterology, Sunshine Union Hospital, Weifang City, Shandong Province, People's Republic of China
| | - Nailing Cui
- Department of Gastroenterology, Weifang Medical University, Weifang City, Shandong Province, People's Republic of China
| | - Zhimei Chen
- Department of Gastroenterology, Sunshine Union Hospital, Weifang City, Shandong Province, People's Republic of China
| | - Qian Yang
- Department of Gastroenterology, Sunshine Union Hospital, Weifang City, Shandong Province, People's Republic of China
| | - Aihua Su
- Department of Emergency, Affiliated Hospital of Weifang Medical University, Weifang City, Shandong Province, People's Republic of China
| |
Collapse
|
39
|
Bu X, Chen Z, Zhang A, Zhou X, Zhang X, Yuan H, Zhang Y, Yin C, Yan Y. Circular RNA circAFF2 accelerates gastric cancer development by activating miR-6894-5p and regulating ANTXR 1 expression. Clin Res Hepatol Gastroenterol 2021; 45:101671. [PMID: 33722777 DOI: 10.1016/j.clinre.2021.101671] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 12/22/2020] [Accepted: 02/23/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Circular RNAs (circRNAs) contain a new class of non-coding RNAs that play an important role in adjusting biological function and gene expression. But the function of circRNAs in gastric cancer remains unclear. In the present research, we explored the functions of circular RNA AFF2(circAFF2, hsa_circ_0001947) in gastric cancer cells and an animal model of gastric cancer. METHODS The expression of circAFF2, microRNA-6894-5p (miR-6894-5p), and Anthrax toxin receptor 1 (ANTXR 1) were determined by quantitative reverse transcription polymerase chain reaction (qRT-PCR). Cell counting kit 8 (CCK-8) and transwell assays were used to analyze the knockdown effects of circAFF2, miR-6894-5p, and overexpression of ANTXR 1 on cell proliferation, migration, and invasion abilities. Binding interactions between, circAFF2 and miR-6894-5p and between, miR-6894-5p and ANTXR 1 were detected by Dual-luciferase reporter assays. Levels of protein expression were analyzed by Western blotting. Tumor models were established by subcutaneous injection of tumor cells in nude mice. RESULT The result showed that circAFF2 expression was significantly increased in gastric cancer cell lines and tissues. The knockdown of circAFF2 dramatically suppressed the cell migration, invasion and proliferation of gastric cancer cells. In vivo studies showed that knockdown of circAFF2 delayed tumor growth. Furthermore, we revealed that circAFF2 functioned as a sponge to absorb miR-6984-5p and elevated the expression of ANTXR 1. CONCLUSION CircAFF2 acts as an oncogene in gastric cancer and exerts its effects via miR-6894-5p/ANTXR 1 signaling.
Collapse
Affiliation(s)
- Xuefeng Bu
- Department of General Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Zhengwei Chen
- Department of General Surgery, Nanjing Lishui District People's Hospital, Nanjing, Jiangsu 211200, China; School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Anwei Zhang
- Department of General Surgery, Kunshan Hospital, Affiliated to Jiangsu University, Kunshan, Jiangsu 215300, China
| | - Xiaodong Zhou
- Department of General Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Xuanfeng Zhang
- Department of General surgery, Xuzhou Central Hospital, Xuzhou, Jiangsu 221000, China
| | - Haitao Yuan
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yao Zhang
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Chaoyun Yin
- Department of Vascular surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Yulan Yan
- Department of Respiratory medicine, the Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China.
| |
Collapse
|
40
|
Wang J, Xiang H, Lu Y, Wu T. Role and clinical significance of TGF‑β1 and TGF‑βR1 in malignant tumors (Review). Int J Mol Med 2021; 47:55. [PMID: 33604683 PMCID: PMC7895515 DOI: 10.3892/ijmm.2021.4888] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 01/27/2021] [Indexed: 12/24/2022] Open
Abstract
The appearance and growth of malignant tumors is a complicated process that is regulated by a number of genes. In recent years, studies have revealed that the transforming growth factor-β (TGF-β) signaling pathway serves an important role in cell cycle regulation, growth and development, differentiation, extracellular matrix synthesis and immune response. Notably, two members of the TGF-β signaling pathway, TGF-β1 and TGF-β receptor 1 (TGF-βR1), are highly expressed in a variety of tumors, such as breast cancer, colon cancer, gastric cancer and hepatocellular carcinoma. Moreover, an increasing number of studies have demonstrated that TGF-β1 and TGF-βR1 promote proliferation, migration and epithelial-mesenchymal transition of tumor cells by activating other signaling pathways, signaling molecules or microRNAs (miRs), such as the NF-κB signaling pathway and miR-133b. In addition, some inhibitors targeting TGF-β1 and TGF-βR1 have exhibited positive effects in in vitro experiments. The present review discusses the association between TGF-β1 or TGF-βR1 and tumors, and the development of some inhibitors, hoping to provide more approaches to help identify novel tumor markers to restrain and cure tumors.
Collapse
Affiliation(s)
- Junmin Wang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Hongjiao Xiang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Yifei Lu
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Tao Wu
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| |
Collapse
|
41
|
Chen L, Shan G. CircRNA in cancer: Fundamental mechanism and clinical potential. Cancer Lett 2021; 505:49-57. [PMID: 33609610 DOI: 10.1016/j.canlet.2021.02.004] [Citation(s) in RCA: 237] [Impact Index Per Article: 79.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 02/02/2021] [Accepted: 02/03/2021] [Indexed: 02/07/2023]
Abstract
Circular RNAs (CircRNAs) are a class of single-stranded noncoding RNAs that are formed in a circular conformation via non-canonical splicing or back-splicing events. Aberrant expressions of many circRNAs are observed in diverse cancers, indicating their crucial roles in tumorigenesis and tumor development. Recently, several pieces of evidence have revealed that many circRNAs are involved in the promotion or suppression of cancers to varying degrees via different molecular mechanisms. Here in this review, we present a summary of the characteristics, types, biogenesis, and functions of circRNAs, and outline a series of the most recently studied circRNAs and their functional mechanisms in multiple cancer types with future perspectives. With great advances in nucleic acid-based therapeutic tools, circRNAs could be further explored as targetable molecules in future cancer treatments.0.
Collapse
Affiliation(s)
- Liang Chen
- Department of Clinical Laboratory, The First Affiliated Hospital of USTC, Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Science and Medicine, University of Science and Technology of China, Hefei, 230027, China.
| | - Ge Shan
- Department of Clinical Laboratory, The First Affiliated Hospital of USTC, Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Science and Medicine, University of Science and Technology of China, Hefei, 230027, China.
| |
Collapse
|
42
|
Li C, Liu Y, Lv Z, Zheng H, Li Z, Zhang J, Bao H, Zhang S, Xiong J, Jin H, Yu L, Ai S, Wang Y, Xiao X, Su T, Liang P. Circular RNA circHECTD1 facilitates glioma progression by regulating the miR-296-3p/SLC10A7 axis. J Cell Physiol 2021; 236:5953-5965. [PMID: 33561315 DOI: 10.1002/jcp.30277] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 12/08/2020] [Accepted: 01/04/2021] [Indexed: 12/13/2022]
Abstract
Glioma is the most common type of primary brain tumor. Treatment options for recurrent gliomas include surgery, chemotherapy, and radiation therapy, but the clinical outcome is usually limited. In recent years, circular RNAs have been found to play a vital role in several human cancers. Gene Expression Omnibus database was utilized to verify the differentially expressed circRNAs. Then we detected that the expression of circular RNA circHECTD1 was significantly increased. The expression and function of circHECDT1 has not yet been reported in glioma. Then we confirmed that the level of circHECTD1 was significantly increased both in glioma tissues and cell lines, which is negatively correlated with the overall survival of patients. Knockdown of circHECTD1 inhibited proliferation and invasion in vitro, and also reduced the growth of tumor and prolonged the prognosis in vivo. Knockdown of circHECTD1 significantly elevated the miR-296-3p expression in LN229 and T98G cells. Luciferase reports and RNA immunoprecipitation data indicated that miR-296-3p was a direct target of circHECTD1 and that the miR-296-3p expression negatively regulated SLC10A7. Rescue experiments showed that the overexpression of SLC10A7 could impede the effects of circHECTD1 silencing on the proliferation and invasion of glioma cells. In this study, we identified that circHECTD1 regulates SLC10A7 by interacting with miR-296-3p in glioma cells. In conclusion, this study investigated a novel biomarker panel consisting of the circHECTD1/miR-296-3p/SLC10A7 axis, which is critical for glioma tumorigenesis and invasiveness and may represent a novel therapeutic target for intervening in glioma progression.
Collapse
Affiliation(s)
- Chenlong Li
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Yan Liu
- Department of Medical Oncology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Zhonghua Lv
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Hongshan Zheng
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Zhenzhe Li
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Jixing Zhang
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Hongbo Bao
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Sibin Zhang
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Jinsheng Xiong
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Hua Jin
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Lei Yu
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Siqi Ai
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Yingjie Wang
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Xu Xiao
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Tianqi Su
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Peng Liang
- Department of Neurosurgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| |
Collapse
|
43
|
Xu Q, Liao B, Hu S, Zhou Y, Xia W. Circular RNA 0081146 facilitates the progression of gastric cancer by sponging miR-144 and up-regulating HMGB1. Biotechnol Lett 2021; 43:767-779. [PMID: 33496921 DOI: 10.1007/s10529-020-03058-x] [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] [Received: 07/16/2020] [Accepted: 12/10/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Recent studies have revealed that circular RNA (circRNA) plays a pivotal role in cancer development. The study aimed to investigate the role of circ_0081146 in gastric cancer (GC). RESULTS Circ_0081146 was upregulated in GC tissues and cells. Patients with high expression of circ_0081146 had a significantly reduced 5-year overall survival rate. Circ_0081146 knockdown restrained the growth, migration and invasion of GC cells in vitro as well as tumorigenesis in vivo. Circ_0081146 targeted miR-144 and HMGB1 was targeted by miR-144. Circ_0081146 was negatively correlated with miR-144 expression, while positively correlated with HMGB1 expression in GC tissues. Moreover, the inhibitory effect of circ_0081146 knockdown on the progression of GC cells were reversed by silencing miR-144 or HMGB1 overexpression. Mechanically, circ_0081146 increased HMGB1 expression by targeting miR-144. CONCLUSION Circ_0081146 functions as an oncogene in GC to promote cell growth, migration and invasion via modulating the miR-144/HMGB1 axis.
Collapse
Affiliation(s)
- Qihua Xu
- Department of Gastroenterology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No. 358, Datong Road, Pudong New Area, Shanghai, 200137, China
| | - Bingling Liao
- Department of Gastroenterology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No. 358, Datong Road, Pudong New Area, Shanghai, 200137, China
| | - Sheng Hu
- Department of Gastrointestinal Surgery, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, 200137, China
| | - Ying Zhou
- Department of Gastroenterology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No. 358, Datong Road, Pudong New Area, Shanghai, 200137, China.
| | - Wei Xia
- Department of Nuclear Medicine, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, No. 358, Datong Road, Pudong New Area, Shanghai, 200137, China.
| |
Collapse
|
44
|
Tang X, Ren H, Guo M, Qian J, Yang Y, Gu C. Review on circular RNAs and new insights into their roles in cancer. Comput Struct Biotechnol J 2021; 19:910-928. [PMID: 33598105 PMCID: PMC7851342 DOI: 10.1016/j.csbj.2021.01.018] [Citation(s) in RCA: 188] [Impact Index Per Article: 62.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 12/13/2022] Open
Abstract
Circular RNAs (circRNAs) are a very interesting class of conserved single-stranded RNA molecules derived from exonic or intronic sequences by precursor mRNA back-splicing. Unlike canonical linear RNAs, circRNAs form covalently closed, continuous stable loops without a 5'end cap and 3'end poly(A) tail, and therefore are resistant to exonuclease digestion. The majority of circRNAs are highly abundant, and conserved across different species with a tissue or developmental-stage-specific expression. circRNAs have been shown to play important roles as microRNA sponges, regulators of gene splicing and transcription, RNA-binding protein sponges and protein/peptide translators. Emerging evidence reveals that circRNAs function in various human diseases, particularly cancers, and may function as better predictive biomarkers and therapeutic targets for cancer treatment. In consideration of their potential clinical relevance, circRNAs have become a new research hotspot in the field of tumor pathology. In the present study, the current understanding of the biogenesis, characteristics, databases, research methods, biological functions subcellular distribution, epigenetic regulation, extracellular transport and degradation of circRNAs was discussed. In particular, the multiple databases and methods involved in circRNA research were first summarized, and the recent advances in determining the potential roles of circRNAs in tumor growth, migration and invasion, which render circRNAs better predictive biomarkers, were described. Furthermore, future perspectives for the clinical application of circRNAs in the management of patients with cancer were proposed, which could provide new insights into circRNAs in the future.
Collapse
Key Words
- AML, acute myloid leukemia
- BSJ, back-splice junction
- Biomarker
- CLL, chronic lymphocytic leukemia
- CML, chronic myeloid leukemia
- CRC, colorectal cancer
- Cancer
- Circular RNAs
- EIciRNAs, exon–intron RNAs
- EMT, epithelial-mesenchymal transition
- Functions
- GC, gastric cancer
- HCC, hepatocellular carcinoma
- ISH, in situ hybridization
- LUAD, lung adenocarcinoma
- MER, miRNA response elements
- MM, multiple myeloma
- NSCLC, non-small cell lung cancer
- PCR, polymerase chain reaction
- PDAC, pancreatic ductal adenocarcinoma
- RBP, RNA-binding protein
- RNA, ribonucleic acid
- RNase, ribonuclease
- RT-PCR, reverse transcription-PCR
- TNM, tumor node metastases
- UTR, untranslated regions
- ccRCC, clear cell renal cell carcinoma
- ceRNAs, endogenous RNAs
- ciRNAs, circular intronic RNAs
- ciRS-7, circular RNA sponge for miR-7
- circRNAs, circular RNAs
- ecircRNAs, exonic circular RNAs
- lncRNAs, long ncRNA
- miRNAs, microRNAs
- ncRNAs, noncoding RNAs
- qPCR, quantitative PCR
- rRNA, ribosomal RNA
- siRNAs, small interfering RNAs
- snRNA, small nuclear RNA
- tricRNAs, tRNA intronic circRNAs
Collapse
Affiliation(s)
- Xiaozhu Tang
- The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210001, China
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Hongyan Ren
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Mengjie Guo
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jinjun Qian
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Ye Yang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Chunyan Gu
- The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210001, China
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| |
Collapse
|
45
|
Gu R, Shao K, Xu Q, Zhao X, Qiu H, Hu H. Circular RNA hsa_circ_0008003 facilitates tumorigenesis and development of non-small cell lung carcinoma via modulating miR-488/ZNF281 axis. J Cell Mol Med 2020; 26:1754-1765. [PMID: 33320427 PMCID: PMC8918407 DOI: 10.1111/jcmm.15987] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/07/2020] [Accepted: 09/29/2020] [Indexed: 01/03/2023] Open
Abstract
As one of the most aggressive malignancies, non‐small cell lung carcinoma (NSCLC) has high risks of death. It has been demonstrated that circRNAs accelerate NSCLC progression, but the underlying molecular mechanisms of circRNAs in NSCLC were still obscure. In the first place, the circRNA microarray of NSCLC was investigated in this study, and hsa_circ_0008003 (circ‐0008003) was chosen as the research object. Then, it was unveiled that the expression of circ‐0008003 examined via qRT‐PCR was elevated in tumour tissues relative to the non‐tumour tissues, which was associated with TNM stage and lymphatic metastasis in NSCLC. Additionally, the prognosis of NSCLC patients with high circ‐0008003 level was poor. Besides, circ‐0008003 silencing dampened the invasion and proliferation of NSCLC cells. Next, according to the mechanistic studies, circ‐0008003 functioned as a ceRNA of ZNF281 in NSCLC by acting as the endogenous sponge for miR‐488, which was proved to be a tumour suppressor in NSCLC. Additionally, ZNF281 overexpression and miR‐488 suppression recovered the influences of repressed circ‐0008003 on NSCLC cellular processes. It was validated in this research that circ‐0008003 triggered tumour formation in NSCLC, which was adjusted via miR‐488/ZNF281 axis, casting a novel light on the resultful target for treating NSCLC and predicting the prognosis.
Collapse
Affiliation(s)
- Runhuan Gu
- Department of Oncology, The Affiliated Huai'an Hospital of Xuzhou Medical University, The Second People's Hospital of Huai'an, Huai'an, China
| | - Koufeng Shao
- Department of Oncology, Huai'an Chuzhou Hospital of Traditional Chinese Medicine, Zhongda Hospital Group Hospital Addiliated to Southest University, Huai'an, China
| | - Qiaoxia Xu
- Nursing Department, Huaiyin Hospital of Huai'an City, Huai'an, China
| | - Xue Zhao
- Department of Thoracic Surgery, The Affiliated Huai'an Hospital of Xuzhou Medical University, The Second People's Hospital of Huai'an, Huai'an, China
| | - Haibing Qiu
- Department of Respiratory, Huaiyin Hospital of Huai'an City, Huai'an, China
| | - Haibo Hu
- Department of Thoracic Surgery, The Affiliated Huai'an Hospital of Xuzhou Medical University, The Second People's Hospital of Huai'an, Huai'an, China
| |
Collapse
|
46
|
Non-coding RNAs underlying chemoresistance in gastric cancer. Cell Oncol (Dordr) 2020; 43:961-988. [PMID: 32495294 DOI: 10.1007/s13402-020-00528-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 04/17/2020] [Accepted: 04/24/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Gastric cancer (GC) is a major health issue in the Western world. Current clinical imperatives for this disease include the identification of more effective biomarkers to detect GC at early stages and enhance the prevention and treatment of metastatic and chemoresistant GC. The advent of non-coding RNAs (ncRNAs), particularly microRNAs (miRNAs) and long-non coding RNAs (lncRNAs), has led to a better understanding of the mechanisms by which GC cells acquire features of therapy resistance. ncRNAs play critical roles in normal physiology, but their dysregulation has been detected in a variety of cancers, including GC. A subset of ncRNAs is GC-specific, implying their potential application as biomarkers and/or therapeutic targets. Hence, evaluating the specific functions of ncRNAs will help to expand novel treatment options for GC. CONCLUSIONS In this review, we summarize some of the well-known ncRNAs that play a role in the development and progression of GC. We also review the application of such ncRNAs in clinical diagnostics and trials as potential biomarkers. Obviously, a deeper understanding of the biology and function of ncRNAs underlying chemoresistance can broaden horizons toward the development of personalized therapy against GC.
Collapse
|
47
|
Feng J, Li Z, Li L, Xie H, Lu Q, He X. Hypoxia‑induced circCCDC66 promotes the tumorigenesis of colorectal cancer via the miR‑3140/autophagy pathway. Int J Mol Med 2020; 46:1973-1982. [PMID: 33125087 PMCID: PMC7595663 DOI: 10.3892/ijmm.2020.4747] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 07/03/2020] [Indexed: 02/07/2023] Open
Abstract
Circular RNAs (circRNAs) have been reported to be involved in the progression of colorectal cancer (CRC). However, the biological role of circCCDC66 in CRC remains unclear. Therefore, the present study aimed to elucidate the mechanisms through which circCCDC66 affects the hypoxia‑induced progression of CRC. It was found that hypoxia promoted the progression of CRC and upregulated the expression of circCCDC66. Furthermore, circCCDC66‑knockdown reduced viability, migration and invasion, and enhanced the apoptosis of hypoxia‑exposed CRC cells. Using the starBase database, it was identified that circCCDC66 may bind to miR‑3140. Subsequently, it was confirmed that circCCDC66 serves as a sponge of miR‑3140 and the depletion of miR‑3140 partly abolished the effects of circCCDC66 on the phenotype of hypoxia‑exposed CRC cells. In addition, miR‑3140 was validated to inhibit the autophagy pathway. The use of an autophagy inducer partially reversed the miR‑3140 overexpression‑induced inhibition of the viability and invasion, and the promotion of the apoptosis of hypoxia‑exposed CRC cells. In summary, the findings of the present study demonstrated that circCCDC66 facilitates the development of CRC cells under hypoxic conditions via regulation of miR‑3140/autophagy. These findings may provide a novel therapeutic option for patients with CRC.
Collapse
Affiliation(s)
- Jin Feng
- Department of Gastrointestinal Surgery
| | - Zhong Li
- Department of Gastrointestinal Surgery
| | - Ling Li
- Department of Gastrointestinal Surgery
| | | | | | - Xiaozhou He
- Department of Urology Surgery, The First People's Hospital of Changzhou, Changzhou, Jiangsu 213029, P.R. China
| |
Collapse
|
48
|
Yang W, Zhao J, Zhao Y, Li W, Zhao L, Ren Y, Ou R, Xu Y. Hsa_circ_0048179 attenuates free fatty acid-induced steatosis via hsa_circ_0048179/miR-188-3p/GPX4 signaling. Aging (Albany NY) 2020; 12:23996-24008. [PMID: 33221744 PMCID: PMC7762518 DOI: 10.18632/aging.104081] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 08/17/2020] [Indexed: 12/12/2022]
Abstract
Although circular RNAs (circRNAs) are known to play key roles in non-alcoholic fatty liver disease, much about their targets and mechanisms remains unknown. We therefore investigated the actions and mechanisms of hsa_circ_0048179 in an in vitro model of NAFLD. HepG2 cells were exposed to oleate/palmitate (2:1 ratio) for 24 h to induce intracellular lipid accumulation. Using CCK-8 assays, flow cytometry, fluorescence microscopy, western blotting, RT-qPCR, and Oil red O staining, we found that oleate/palmitate treatment reduced cell viability while increasing apoptosis and lipid accumulation in HepG2 cells. Levels of the antioxidant enzyme GPX4 were decreased in oleate/palmitate-treated HepG2 cells, and there were corresponding increases in reactive oxygen species and damage to mitochondrial cristae. Levels of hsa_circ_0048179 expression were also suppressed by oleate/palmitate treatment, and GPX4 levels were markedly increased in HepG2 cells following transfection with hsa_circ_0048179. Analysis of its mechanism revealed that hsa_circ_0048179 upregulated GPX4 levels by acting as a competitive “sponge” of miR-188-3p and that hsa_circ_0048179 attenuated oleate/palmitate-induced lipid accumulation in HepG2 cells by sponging miR-188-3p. Collectively, our findings suggest that hsa_circ_0048179 may play a key role in the pathogenesis of steatosis and may thus be a useful target for drug development.
Collapse
Affiliation(s)
- Wenjun Yang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jinduo Zhao
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Ye Zhao
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Wenfeng Li
- Laboratory for Advanced Interdisciplinary Research, Institutes of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Liang Zhao
- Laboratory for Advanced Interdisciplinary Research, Institutes of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yi Ren
- Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, FL 32304, USA
| | - Rongying Ou
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,Laboratory for Advanced Interdisciplinary Research, Institutes of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yunsheng Xu
- Laboratory for Advanced Interdisciplinary Research, Institutes of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,Department of Dermatovenereology, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, China
| |
Collapse
|
49
|
Rajappa A, Banerjee S, Sharma V, Khandelia P. Circular RNAs: Emerging Role in Cancer Diagnostics and Therapeutics. Front Mol Biosci 2020; 7:577938. [PMID: 33195421 PMCID: PMC7655967 DOI: 10.3389/fmolb.2020.577938] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/26/2020] [Indexed: 12/17/2022] Open
Abstract
Circular RNAs (circRNAs) are rapidly coming to the fore as major regulators of gene expression and cellular functions. They elicit their influence via a plethora of diverse molecular mechanisms. It is not surprising that aberrant circRNA expression is common in cancers and they have been implicated in multiple aspects of cancer pathophysiology such as apoptosis, invasion, migration, and proliferation. We summarize the emerging role of circRNAs as biomarkers and therapeutic targets in cancer.
Collapse
Affiliation(s)
| | | | - Vivek Sharma
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani - Hyderabad Campus, Hyderabad, India
| | - Piyush Khandelia
- Department of Biological Sciences, Birla Institute of Technology and Science, Pilani - Hyderabad Campus, Hyderabad, India
| |
Collapse
|
50
|
Xue VW, Chung JYF, Córdoba CAG, Cheung AHK, Kang W, Lam EWF, Leung KT, To KF, Lan HY, Tang PMK. Transforming Growth Factor-β: A Multifunctional Regulator of Cancer Immunity. Cancers (Basel) 2020. [PMID: 33114183 DOI: 10.3390/cancers12113099.pmid:33114183;pmcid:pmc7690808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023] Open
Abstract
Transforming growth factor-β (TGF-β) was originally identified as an anti-tumour cytokine. However, there is increasing evidence that it has important roles in the tumour microenvironment (TME) in facilitating cancer progression. TGF-β actively shapes the TME via modulating the host immunity. These actions are highly cell-type specific and complicated, involving both canonical and non-canonical pathways. In this review, we systemically update how TGF-β signalling acts as a checkpoint regulator for cancer immunomodulation. A better appreciation of the underlying pathogenic mechanisms at the molecular level can lead to the discovery of novel and more effective therapeutic strategies for cancer.
Collapse
Affiliation(s)
- Vivian Weiwen Xue
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Jeff Yat-Fai Chung
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Cristina Alexandra García Córdoba
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Alvin Ho-Kwan Cheung
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Wei Kang
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Eric W-F Lam
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London W12 0NN, UK
| | - Kam-Tong Leung
- Department of Paediatrics, The Chinese University of Hong Kong, Shatin, Hong Kong 999077, China
| | - Ka-Fai To
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Hui-Yao Lan
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Patrick Ming-Kuen Tang
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, The Chinese University of Hong Kong, Hong Kong 999077, China
| |
Collapse
|