1
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Li J, Zhang Y, Dong PY, Yang GM, Gurunathan S. A comprehensive review on the composition, biogenesis, purification, and multifunctional role of exosome as delivery vehicles for cancer therapy. Biomed Pharmacother 2023; 165:115087. [PMID: 37392659 DOI: 10.1016/j.biopha.2023.115087] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/24/2023] [Accepted: 06/26/2023] [Indexed: 07/03/2023] Open
Abstract
All forms of life produce nanosized extracellular vesicles called exosomes, which are enclosed in lipid bilayer membranes. Exosomes engage in cell-to-cell communication and participate in a variety of physiological and pathological processes. Exosomes function via their bioactive components, which are delivered to target cells in the form of proteins, nucleic acids, and lipids. Exosomes function as drug delivery vehicles due to their unique properties of innate stability, low immunogenicity, biocompatibility, biodistribution, accumulation in desired tissues, low toxicity in normal tissues, and the stimulation of anti-cancer immune responses, and penetration capacity into distance organs. Exosomes mediate cellular communications by delivering various bioactive molecules including oncogenes, oncomiRs, proteins, specific DNA, messenger RNA (mRNA), microRNA (miRNA), small interfering RNA (siRNA), and circular RNA (circRNA). These bioactive substances can be transferred to change the transcriptome of target cells and influence tumor-related signaling pathways. After considering all of the available literature, in this review we discuss the biogenesis, composition, production, and purification of exosomes. We briefly review exosome isolation and purification techniques. We explore great-length exosomes as a mechanism for delivering a variety of substances, including proteins, nucleic acids, small chemicals, and chemotherapeutic drugs. We also talk about the benefits and drawbacks of exosomes. This review concludes with a discussion future perspective and challenges. We hope that this review will provide us a better understanding of the current state of nanomedicine and exosome applications in biomedicine.
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Affiliation(s)
- Jian Li
- Fujian Key Laboratory of Traditional Chinese Veterinary Medicine and Animal Health, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ye Zhang
- Advanced Medical Research Institute, Shandong University, Jinan, Shandong 250014, China
| | - Pei-Yu Dong
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao 266109, China
| | - Guo-Ming Yang
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao 266109, China
| | - Sangiliyandi Gurunathan
- Department of Biotechnology, Rathinam College of Arts and Science, Pollachi Road, Eachanari, Coimbatore, Tamil Nadu 641021, India.
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2
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Lv Y, Yin W, Zhang Z. Non-coding RNAs as potential biomarkers of gallbladder cancer. CLINICAL & TRANSLATIONAL ONCOLOGY : OFFICIAL PUBLICATION OF THE FEDERATION OF SPANISH ONCOLOGY SOCIETIES AND OF THE NATIONAL CANCER INSTITUTE OF MEXICO 2022; 25:1489-1511. [PMID: 36576705 DOI: 10.1007/s12094-022-03056-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 12/20/2022] [Indexed: 12/29/2022]
Abstract
Gallbladder cancer (GBC) performs strongly invasive and poor prognosis, and adenocarcinoma is the most common histological type in it. Statistically, the 5-year survival rate of patients with advanced GBC is less than 5%. Such dismal outcome might be caused by chemotherapy resistance and native biology of tumor cells, regardless of emerging therapeutic strategies. Early diagnosis, depending on biomarkers, receptors and secretive proteins, is more important than clinical therapy, guiding the pathologic stage of cancer and the choice of medication. Therefore, it is in urgent need to understand the specific pathogenesis of GBC and strive to find promising novel biomarkers for early screening in GBC. Non-coding RNAs (ncRNAs), especially microRNAs (miRNAs, miRs), long non-coding RNAs (lncRNAs), and circular RNAs (circRNAs), are confirmed to participate in and regulate the occurrence and development of GBC. Exceptionally, lncRNAs and circRNAs could act as competing endogenous RNAs (ceRNAs) containing binding sites for miRNAs and crosstalk with miRNAs to target regulatory downstream protein-coding messenger RNAs (mRNAs), thus affecting the expression levels of specific proteins to participate in and regulate the development and progression of GBC. It follows that ncRNAs may become promising biomarkers and potential therapeutic targets for GBC. In this review, we mainly summarize the recent research progress of miRNAs and lncRNAs in regulating the development and progression of GBC, chemoresistance, and predicting the prognosis of patients, and highlight the potential applications of the lncRNA/circRNA-miRNA-mRNA cross-regulatory networks in early diagnosis, chemoresistance, and prognostic evaluation, aiming to better understand the pathogenesis of GBC and develop new diagnostic and therapeutic strategies.
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Affiliation(s)
- Yan Lv
- The Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, 443002, China.
- College of Basic Medical Science, China Three Gorges University, Life Science Building, No.8 Daxue Road, Yichang, 443002, China.
| | - Wanyue Yin
- College of Basic Medical Science, China Three Gorges University, Life Science Building, No.8 Daxue Road, Yichang, 443002, China
| | - Zhikai Zhang
- The Third-Grade Pharmacological Laboratory On Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, 443002, China
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3
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Liu J, Peng X, Yang Y, Zhang Y, Han M, Shi X, Zheng J, Li T, Chen J, Lv W, Liu Y, Qi Y, Zhang L, Liu Q. The value of hsa_circ_0058514 in plasma extracellular vesicles for breast cancer. Front Oncol 2022; 12:995196. [PMID: 36387225 PMCID: PMC9663982 DOI: 10.3389/fonc.2022.995196] [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: 07/15/2022] [Accepted: 10/04/2022] [Indexed: 01/25/2023] Open
Abstract
The aim of this study was to investigate the diagnostic value of hsa_circ_0058514 in plasma extracellular vesicles (EVs) in BC patients and its predictive value for neoadjuvant chemotherapy. The expression of hsa_circ_0058514 in a large sample of BC plasma and healthy subjects' plasma was detected by qPCR, and the ROC curve was drawn to verify its diagnostic value as a plasma tumor marker. Furthermore, the association between the expression of hsa_circ_0058514 and clinicopathological characteristics before and after treatment was detected in the plasma of 40 pairs of BC patients undergoing neoadjuvant therapy. The expression level of hsa_circ_0058514 in the plasma of BC patients was significantly higher than that of healthy subjects. The ROC curve showed that plasma hsa_circ_0058514 ROC in differentiating non-metastatic BC and healthy people had better diagnostic efficiency than conventional tumor markers CA153, CA125, and CEA. In patients with neoadjuvant therapy, the decrease in plasma hsa_circ_0058514 value before and after treatment correlated with pathological MP grade (r = 0.444, p = 0.004) and imaging tumor regression value (r = 0.43, p = 0.005) positive correlation. The detection of hsa_circ_0058514 in both extracellular vesicles of BC cell culture medium and human plasma was demonstrated. Hsa_circ_0058514 is detected in the plasma from BC cells secreted in the form of vesicles. Hsa_circ_0058514 can be used as an early plasma biological indicator for the diagnosis of BC in clinical applications, with a higher risk of recurrence and metastasis, and as a predictor of the effect of neoadjuvant therapy to guide the clinical use of neoadjuvant therapy.
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Affiliation(s)
- Jiani Liu
- Department of Breast Surgery, The First Hospital of Qinhuangdao, Qinhuangdao, China
| | - Xinyu Peng
- Department of Gastrointestinal Surgery, Affiliated Hospital of Hebei University, Baoding, China
| | - Yang Yang
- Department of Oncology, Affiliated Hospital of Hebei University, Baoding, China
| | - Yao Zhang
- Department of Plastic Surgery, Hangzhou Xiaoshan Yaoran Medical Cosmetology Clinic Co. Ltd, Hangzhou, China
| | - Meng Han
- Department of Breast Surgery, The First Hospital of Qinhuangdao, Qinhuangdao, China
| | - Xiaohui Shi
- Department of Breast Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jie Zheng
- Department of Breast Surgery, The First Hospital of Qinhuangdao, Qinhuangdao, China
| | - Tong Li
- Graduate school of Chengde Medical University, Chengde, China
| | - Jinxia Chen
- Clinical Laboratory of the Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Weihua Lv
- Clinical Laboratory of the Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yunjiang Liu
- Department of Breast Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China,*Correspondence: Yunjiang Liu, ; Yixin Qi,
| | - Yixin Qi
- Department of Breast Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China,*Correspondence: Yunjiang Liu, ; Yixin Qi,
| | - Lei Zhang
- School of Nursing, Hebei Medical University, Shijiazhuang, China
| | - Qi Liu
- School of Nursing, Hebei Medical University, Shijiazhuang, China
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4
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Wu M, Han Y, Gong X, Wan K, Liu Y, Zhou Y, Zhang L, Tang G, Fang H, Chen B, Yang F, Zhao Q, Wang G, Zhanghuang C, Zhang Y. Novel Insight of CircRNAs in Cervical Cancer: Potential Biomarkers and Therapeutic Target. Front Med (Lausanne) 2022; 9:759928. [PMID: 35814779 PMCID: PMC9260044 DOI: 10.3389/fmed.2022.759928] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 03/23/2022] [Indexed: 01/01/2023] Open
Abstract
Cervical cancer (CC) is a prominent cancer around the globe, with a high incidence, and fatality rate. Numerous recent investigations have shown that various non-coding RNAs are associated with the progression of CC. Circular RNAs, a novel class of non-coding RNAs, have a single chain covalent closed-loop structure and are involved in cell growth and other physiological processes. These dysregulated circRNAs seem to have environment-specific functions. They have been demonstrated in certain studies to have a dual involvement in oncogene production and tumor inhibition in different cell settings. Simultaneously, some evidence indicates that circRNAs are abnormally expressed in CC and contributes to its progression. Thus, the distinctive expression profile of circRNAs is associated with the diagnosis, prognosis, and treatment outcomes of CC. We summarized numerous CC-specific circles and their function in revealing the molecular processes of carcinogenesis and progression in CC in this review. Taken together, these data suggest that circRNA may be used as an early detection biomarker and potential therapeutic target in patients with CC.
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Affiliation(s)
- Maomao Wu
- Department of Pharmacy, Anhui Chest Hospital, Hefei, China
| | - Yanxun Han
- Department of Otolaryngology – Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | | | - Ke Wan
- School of Pharmacy, Anhui Medical University, Hefei, China
| | - Yuchen Liu
- Department of Otolaryngology – Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yi Zhou
- The First Clinical Medical College, Anhui Medical University, Hefei, China
| | - Lizhi Zhang
- The First Clinical Medical College, Anhui Medical University, Hefei, China
| | - Guozheng Tang
- The First Clinical Medical College, Anhui Medical University, Hefei, China
| | - Hui Fang
- Department of Pharmacy, Hangzhou Normal University Affiliated Hospital, Hangzhou, China
| | - Bangjie Chen
- The First Clinical Medical College, Anhui Medical University, Hefei, China
| | - Fan Yang
- The First Clinical Medical College, Anhui Medical University, Hefei, China
| | - Qing Zhao
- Department of Pharmacy, Hangzhou Normal University Affiliated Hospital, Hangzhou, China
| | - Genbao Wang
- Department of Pharmacy, Hangzhou Normal University Affiliated Hospital, Hangzhou, China
- Genbao Wang,
| | - Chenghao Zhanghuang
- Department of Urology, Kunming Children’s Hospital, Kunming, China
- *Correspondence: Chenghao Zhanghuang,
| | - Yunling Zhang
- Department of Pharmacy, Anhui Chest Hospital, Hefei, China
- Yunling Zhang,
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5
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Du T, Yi S, Wang Y, Zhao Q, Ma P, Jiang W. Circular RNA_0120376 regulates microRNA-148b-3 and centrosomal protein 55 to promote non-small cell lung cancer development. Bioengineered 2022; 13:11844-11855. [PMID: 35549631 PMCID: PMC9275942 DOI: 10.1080/21655979.2022.2052647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Circular RNAs (circRNAs) are non-coding RNAs with covalent closed-loop structures that are vital in regulating diverse pathological processes. This work is aimed to investigate the role of circ_0120376 in non-small cell lung cancer (NSCLC). Circ_0120376, microRNA (miR)-148b-3p, and centrosomal protein 55 (CEP55) mRNA expression in NSCLC tissues and cells were determined using qRT-PCR. The influences of circ_0120376 and miR-148b-3p on the proliferation of NSCLC cell lines were analyzed by CCK-8 and colony formation assays. Apoptosis was analyzed by flow cytometry. Cell migration and invasion were analyzed using the Transwell experiment. Binding relationships between circ_0120376 and miR-148b-3p and between miR-148b-3p and CEP55 3'UTR were investigated using the dual-luciferase reporter experiment and the RIP experiment. Western blot was conducted to analyze the regulatory effect of circ_0120376 and miR-148b-3p on CEP55 expression. We found that circ_0120376 was markedly overexpressed in NSCLC, and its overexpression was positively associated with increased T stage and lymph node metastasis of the patients. Functional experiments unveiled that circ_0120376 enhanced the proliferation, migration and invasion of NSCLC cells and impeded apoptosis, while knocking down circ_0120376 remarkably suppressed the malignant features of NSCLC cells mentioned above. Circ_0120376 could adsorb miR-148b-3p to reduce miR-148b-3p expression, and circ_0120376 could increase CEP55 expression via adsorbing miR-148b-3p. In summary, circ_0120376 contributes to the malignancy of NSCLC cells through a ceRNA mechanism via regulating miR-148b-3p/CEP55 axis. Circ_0120376 is likely to be a potential diagnostic biomarker and therapeutic target for NSCLC.
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Affiliation(s)
- Tiantian Du
- Department of Respiratory and Critical Medicine, Yantai Yuhuangding Hospital, Yantai, China
| | - Shenni Yi
- Department of Respiratory and Critical Medicine, Yantai Yuhuangding Hospital, Yantai, China
| | - Yuanyuan Wang
- Department of Respiratory and Critical Medicine, Yantai Yuhuangding Hospital, Yantai, China
| | - Qiang Zhao
- Chinese Academy of Sciences, Beijing, China
| | - Ping Ma
- Department of Respiratory and Critical Medicine, Yantai Yuhuangding Hospital, Yantai, China
| | - Wei Jiang
- Department of Respiratory and Critical Medicine, Yantai Yuhuangding Hospital, Yantai, China
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6
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Ye D, Gong M, Deng Y, Fang S, Cao Y, Xiang Y, Shen Z. Roles and clinical application of exosomal circRNAs in the diagnosis and treatment of malignant tumors. J Transl Med 2022; 20:161. [PMID: 35382838 PMCID: PMC8981684 DOI: 10.1186/s12967-022-03367-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 03/26/2022] [Indexed: 02/07/2023] Open
Abstract
Exosomes are microvesicles secreted by cells. They contain a variety of bioactive substances with important roles in intercellular communication. Circular RNA (circRNA), a type of nucleic acid molecule found in exosomes, forms a covalently bonded closed loop without 5′ caps or 3′ poly(A) tails. It is structurally stable, widely distributed, and tissue specific. CircRNAs mainly act as microRNA sponges and have important regulatory roles in gene expression; they are superior to other non-coding RNAs as molecular diagnostic markers and drug treatment targets. Exosomal-derived circRNAs in the body fluids of tumor patients can modulate tumor proliferation, invasion, metastasis, and drug resistance. They can be used as effective biomarkers for early non-invasive diagnosis and prognostic evaluation of tumors, and also represent ideal targets for early precision therapeutic intervention. This review provides a theoretical basis for exploring the applications of exosomal circRNAs in malignant tumor diagnosis and treatment. We describe the biological functions of exosomal circRNAs in the occurrence and development of malignant tumors, their potential utility in diagnosis and treatment, and possible mechanisms.
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Affiliation(s)
- Dong Ye
- Department of Otorhinolaryngology-Head and Neck Surgery, Lihuili Hospital of Ningbo University, Ningbo, 315040, Zhejiang, China.
| | - Mengdan Gong
- Department of Otorhinolaryngology-Head and Neck Surgery, Lihuili Hospital of Ningbo University, Ningbo, 315040, Zhejiang, China
| | - Yongqin Deng
- Department of Otorhinolaryngology-Head and Neck Surgery, Lihuili Hospital of Ningbo University, Ningbo, 315040, Zhejiang, China
| | - Shuai Fang
- Department of Thoracic Surgery, Affiliated Hospital of Ningbo University, Ningbo, 315020, Zhejiang, China
| | - Yujie Cao
- Department of Otorhinolaryngology-Head and Neck Surgery, Lihuili Hospital of Ningbo University, Ningbo, 315040, Zhejiang, China
| | - Yizhen Xiang
- Department of Otorhinolaryngology-Head and Neck Surgery, Lihuili Hospital of Ningbo University, Ningbo, 315040, Zhejiang, China
| | - Zhisen Shen
- Department of Otorhinolaryngology-Head and Neck Surgery, Lihuili Hospital of Ningbo University, Ningbo, 315040, Zhejiang, China.
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7
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Li Y, Qin G, Du J, Yue P, Zhang Y, Hou N. circRNA LDLRAD3 Enhances the Malignant Behaviors of NSCLC Cells via the miR-20a-5p-SLC7A5 Axis Activating the mTORC1 Signaling Pathway. JOURNAL OF HEALTHCARE ENGINEERING 2022; 2022:2373580. [PMID: 35035814 PMCID: PMC8758255 DOI: 10.1155/2022/2373580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 12/12/2022]
Abstract
Circular RNA LDLRAD3 behaved as an oncogene in several malignancies, but its effects in NSCLC and the involvement of downstream molecules and activation of signaling pathways had not been fully reported. We planned to explore how LDLRAD3 facilitated the malignancy of NSCLC. QRT-PCR was performed to evaluate the expression levels of LDLRAD3, miR-20a-5p, and SLC7A5 in NSCLC tissues and cells. si-LDLRAD3 was transfected to A549 and H1299 cells to knock down intrinsic LDLRAD3 to determine its oncogenic roles. CCK-8 assay and transwell assay were executed to assess cell proliferative, migrative, and invasive abilities. Dual-luciferase reporter (DLR) assay was manipulated to verify the ENCORI-predicted relationships between LDLRAD3 and miR-20a-5p and between miR-20a-5p and SLC7A5. Western blot, immunofluorescent assay, and immunohistochemistry were applied to explore the expression levels of SLC7A5, and the levels of mTORC1 pathway-related proteins were evaluated using western blot. Rescue experiments were conducted by transfecting si-LDLRAD3, miR-20a-5p inhibitor, and si-SLC7A5 to explore the influence of the LDLRAD3-miR-20a-5p-SLC7A5 axis on the malignant behaviors of NSCLC cells. The expression levels of LDLRAD3 and SLC7A5 were boosted, whereas miR-20a-5p was impeded in NSCLC tissues and cell lines. Knockdown of LDLRAD3 weakened the proliferation, migration, and invasion of A549 and H1299 cells. LDLRAD3 was verified to sponge miR-20a-5p and miR-20a-5p targeted SLC7A5. LDLRAD3 activated the mTORC1 singling pathway via the miR-20a-5p-SLC7A5 axis to strengthen the malignant properties of A549 and H1299 cells. We concluded that LDLRAD3 exerted oncogenic effects via the miR-20a-5p-SLC7A5 axis to activate the mTORC1 signaling pathway in NSCLC. Our findings enlightened that LDLRAD3 could become a potential therapeutic target in the treatment and management of NSCLC.
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Affiliation(s)
- Yu Li
- Department of ICU Medicine, Shandong Province Zibo No. 1 Hospital, Zibo 255200, Shandong, China
| | - Guangle Qin
- Emergency Department, Shandong Province Zibo No. 1 Hospital, Zibo 255200, Shandong, China
| | - Jinyun Du
- Department of ICU Medicine, Shandong Province Zibo No. 1 Hospital, Zibo 255200, Shandong, China
| | - Peng Yue
- Emergency Department, Shandong Province Zibo No. 1 Hospital, Zibo 255200, Shandong, China
| | - Yanling Zhang
- Department of Intensive Care, Boxing County Hospital of Traditional Chinese Medicine, Binzhou 256500, Shandong, China
| | - Na Hou
- Oncology Dept. II, Shandong Province Zibo No. 1 Hospital, Zibo 255200, Shandong, China
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8
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Xie F, Xiong Y, Yan J, Wang L, Yan W. Circular RNA circ_0048764 promotes the development of breast cancer by regulating microRNA-1296-5p/tripartite motif containing 14 axis. Bioengineered 2021; 13:1963-1974. [PMID: 34787066 PMCID: PMC8973759 DOI: 10.1080/21655979.2021.1995990] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Breast cancer (BC) is one of the leading causes of cancer-related deaths in female. Circular RNA (circRNA), as reported, is involved in the progression of BC. This work focuses on clarifying the biological function of circ_0048764 in BC and its hidden mechanism. Quantitative real-time polymerase chain reaction (qRT-PCR) was performed to detect the expressions of circ_0048764, microRNA-1296-5p (miR-1296-5p), and tripartite motif containing 14 (TRIM14) in BC tissues and cell lines. Besides, the status of proliferation, migration, invasion and apoptosis of BC cells was probed by cell counting kit-8 (CCK-8), EdU, transwell and flow cytometry assays. Western blot was adopted to examine the level of TRIM14 protein in BC cells. In addition, dual-luciferase reporter gene assay and RNA immunoprecipitation (RIP) assay were conducted to corroborate the targeting relationships between miR-1296-5p and circ_0048764 or TRIM14. It was revealed that circ_0048764 expression was remarkably up-regulated in BC tissues and cells, and circ_0048764 expression was associated with TNM stage and tumor size. Functionally, overexpression of circ_0048764 significantly promoted BC cell proliferative, migrative and invasive abilities and inhibited apoptosis, while circ_0048764 knockdown exerted the opposite effects. Mechanistically, circ_0048764 directly targeted miR-1296-5p and could negatively modulate its expression in BC cells. Besides, miR-1296-5p could reverse the influence of circ_0048764 on BC viability, migration, invasion and apoptosis. Moreover, TRIM14 was confirmed to be a downstream target of miR-1296-5p. Circ_0048764 positively regulated TRIM14 expression in BC cells via targeting miR-1296-5p. Collectively, it is concluded that circ_0048764 promotes the development of BC via modulating the miR-1296-5p/TRIM14 axis.
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Affiliation(s)
- Fei Xie
- Department of General Surgery, Xiangyang Central Hospital, Xiangyang 441021, Hubei Province, People's Republic of China
| | - Yuyuan Xiong
- Department of General Surgery, Xiangyang Central Hospital, Xiangyang 441021, Hubei Province, People's Republic of China
| | - Jiayin Yan
- Department of General Surgery, Xiangyang Central Hospital, Xiangyang 441021, Hubei Province, People's Republic of China
| | - Ling Wang
- Department of General Surgery, Xiangyang Central Hospital, Xiangyang 441021, Hubei Province, People's Republic of China
| | - Wei Yan
- Department of General Surgery, Xiangyang Central Hospital, Xiangyang 441021, Hubei Province, People's Republic of China
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9
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Yan Y, Peng J, Liang Q, Ren X, Cai Y, Peng B, Chen X, Wang X, Yi Q, Xu Z. Dynamic m6A-ncRNAs association and their impact on cancer pathogenesis, immune regulation and therapeutic response. Genes Dis 2021; 10:135-150. [PMID: 37013031 PMCID: PMC10066278 DOI: 10.1016/j.gendis.2021.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 10/11/2021] [Accepted: 10/25/2021] [Indexed: 02/08/2023] Open
Abstract
Several types of modifications have been proven to participate in the metabolism and processing of different RNA types, including non-coding RNAs (ncRNAs). N-6-methyladenosine (m6A) is a dynamic and reversible RNA modification that is closely involved in the ncRNA homeostasis, and serves as a crucial regulator for multiple cancer-associated signaling pathways. The ncRNAs usually regulate the epigenetic modification, mRNA transcription and other biological processes, displaying enormous roles in human cancers. In this review, we summarized the significant implications of m6A-ncRNA interaction in various types of cancers. In particular, the interplay between m6A and ncRNAs in cancer pathogenesis and therapeutic resistance are being widely recognized. We also discussed the relevance of m6A-ncRNA interaction in immune regulation, followed by the interference on cancer immunotherapeutic procedures. In addition, we briefly highlighted the computation tools that could identify the accurate features of m6A methylome among ncRNAs. In summary, this review would pave the way for a better understanding of the biological functions of m6A-ncRNA crosstalk in cancer research and treatment.
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10
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Liu Z, Li M. Circular RNAs and their role in renal cell carcinoma: a current perspective. Cancer Cell Int 2021; 21:469. [PMID: 34488780 PMCID: PMC8422676 DOI: 10.1186/s12935-021-02181-7] [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: 04/01/2021] [Accepted: 08/27/2021] [Indexed: 02/07/2023] Open
Abstract
Circular RNAs (circRNAs) are a new class of long non-coding RNAs, that results from a special type of alternative splicing referred to as back-splicing. They are widely distributed in eukaryotic cells and demonstrate tissue-specific expression patterns in humans. CircRNAs actively participate in various important biological activities like gene transcription, pre-mRNA splicing, translation, sponging miRNA and proteins, etc. With such diverse biological functions, circRNAs not only play a crucial role in normal human physiology, as well as in multiple diseases, including cancer. In this review, we summarized our current understanding of circRNAs and their role in renal cell carcinoma (RCC), the most common cancer of kidneys. Studies have shown that the expression level of several circRNAs are considerably varied in RCC samples and RCC cell lines suggesting the potential role of these circRNAs in RCC progression. Several circRNAs promote RCC development and progression mostly via the miRNA/target gene axis making them ideal candidates for novel anti-cancer therapy. Apart from these, there are a few circRNAs that are significantly downregulated in RCC and overexpression of these circRNAs leads to suppression of RCC growth. Differential expression patterns and novel functions of circRNAs in RCC suggest that circRNAs can be utilized as potential biomarkers and therapeutic targets for RCC therapy. However, our current understanding of the role of circRNA in RCC is still in its infancy and much comprehensive research is needed to achieve clinical translation of circRNAs as biomarkers and therapeutic targets in developing effective treatment options for RCC.
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Affiliation(s)
- Zhongyuan Liu
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, People's Republic of China
| | - Ming Li
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, People's Republic of China.
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11
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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.
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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
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Lu T, Qiu T, Han B, Wang Y, Sun X, Qin Y, Liu A, Ge N, Jiao W. Circular RNA circCSNK1G3 induces HOXA10 signaling and promotes the growth and metastasis of lung adenocarcinoma cells through hsa-miR-143-3p sponging. Cell Oncol (Dordr) 2021; 44:297-310. [PMID: 33118120 DOI: 10.1007/s13402-020-00565-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND In the last decade, a relatively novel, ubiquitous and highly stable subclass of non-coding RNAs, called circular (circ)-RNAs, has increasingly been implicated in cancer development, and several of them have been shown to act as microRNA sponges. As yet, however, the role of circRNAs in lung adenocarcinoma (LUAD) development has largely remained unexplored. METHODS Bioinformatics, microarray-based and qRT-PCR expression assays were used to assess circRNA, miRNA and mRNA expression in LUAD patient samples and cell lines. siRNA-mediated silencing was used to assess the effect of circCSNK1G3 on various LUAD-associated characteristics such as proliferation, migration, invasion and tumorigenesis, both in vitro and in vivo. Western blotting, immunohistochemistry, fluorescence in situ hybridization (FISH) and luciferase reporter activity assays were used to characterize relationships between circCSNK1G3, miR-143-3p and HOXA10 in LUAD cells. RESULTS By screening for differentially expressed circRNAs, we found that circCSNK1G3 was aberrantly expressed in primary LUAD tissues and cell lines. An oncogenic role of circCSNK1G3 was deduced from its aberrant expression and associated enhancement of LUAD A549 and H1299 cell proliferation, migration and invasion. We also found that circCSNK1G3 can directly interact with and suppress miR-143-3p expression by serving as a 'miR-143-3p sponge'. In addition, we found that circCSNK1G3 can modulate homeobox (HOX) A10 expression through miR-143-3p signaling and, thereby, affect LUAD tumorigenesis. CONCLUSIONS Our data indicate that circCSNK1G3 can induce HOXA10 expression and, thereby, promote the growth and metastasis of LUAD cells through hsa-miR-143-3p sponging. As such, our data highlight the targetability of the circCSNK1G3/miR-143-3p/HOXA10 signaling axis in patients with LUAD. Graphical abstract.
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Affiliation(s)
- Tong Lu
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Tong Qiu
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Bin Han
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Yuanyong Wang
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Xiao Sun
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Yi Qin
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Ao Liu
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Nan Ge
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Wenjie Jiao
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao, 266000, China.
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Dai X, Cheng Y, Wang C, Huang J, Chao J. Role of circular RNAs in visceral organ fibrosis. Food Chem Toxicol 2021; 150:112074. [PMID: 33610620 DOI: 10.1016/j.fct.2021.112074] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 01/28/2021] [Accepted: 02/14/2021] [Indexed: 02/06/2023]
Abstract
Circular RNAs (circRNAs) are a novel class of noncoding RNAs produced during pre-mRNA splicing and are emerging as new members of the gene regulatory network. Unlike linear RNAs, circRNAs have a unique structure with a covalently closed loop formed from the ligation of exons, introns, or both. CircRNAs are widely expressed in various organisms in a species-, tissue-, developmental stage- and disease-specific manner; circRNAs have been demonstrated to play a vital role in the pathogenesis and progression of human diseases. Fibrosis is characterized by an abnormal excessive deposition of extracellular matrix (ECM) in the extracellular space and plays important roles in many different pathologies of various organs. CircRNAs function as master regulators of gene expression to "sponge" or sequester other genes and target gene expression, transcription, splicing, etc. Increasing evidence has revealed that circRNAs are tightly associated with fibrotic diseases in various organs, including the lungs, liver, heart and kidneys. Herein, we provide the current understanding of the molecular characteristics of circRNAs and summarize the findings from circRNA studies in which the functions and mechanisms of action of circRNAs in organ fibrosis were proposed.
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Affiliation(s)
- Xiaoniu Dai
- Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China; School of Medicine, Xizang Minzu University, Xianyang, Shanxi, 712082, China; Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Yusi Cheng
- Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Cuifen Wang
- Tissue Sciences Facility, University of Nebraska Medical Center, 985815 Nebraska Medical Center, Omaha, NE6B19B-5815, USA
| | - Jie Huang
- Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Jie Chao
- Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China; School of Medicine, Xizang Minzu University, Xianyang, Shanxi, 712082, China; Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China; Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, 210009, China.
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Jin C, Zhao J, Zhang Z, Wu M, Li J, Liu B, Bin Liao X, Liao Y, Liu J. CircRNA EPHB4 modulates stem properties and proliferation of gliomas via sponging miR-637 and up-regulating SOX10. Mol Oncol 2021; 15:596-622. [PMID: 33085838 PMCID: PMC7858283 DOI: 10.1002/1878-0261.12830] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 08/20/2020] [Accepted: 08/26/2020] [Indexed: 12/14/2022] Open
Abstract
Gliomas are the most common type of primary brain tumors. CircRNA ephrin type-B receptor 4 (circEPHB4) is a circular RNA derived from the receptor tyrosine kinase EPHB4. However, the clinical significance and the specific roles of circEPHB4 in gliomas and glioma cancer stem cells (CSC) have not been studied. Here, we found that circEPHB4 (hsa_circ_0081519) and SOX10 were up-regulated and microRNA (miR)-637 was down-regulated in glioma tissues and cell lines. Consistently, circEPHB4 was positively correlated with SOX10 but negatively correlated with miR-637. The altered expressions of these molecules were independently associated with overall survival of patients. CircEPHB4 up-regulated SOX10 and Nestin by directly sponging miR-637, thereby stimulating stemness, proliferation and glycolysis of glioma cells. Functionally, silencing circEPHB4 or increasing miR-637 levels in glioma cells was sufficient to inhibit xenograft growth in vivo. In conclusion, the circEPHB4/miR-637/SOX10/Nestin axis plays a central role in controlling stem properties, self-renewal and glycolysis of glioma cells and predicts the overall survival of glioma patients. Targeting this axis might provide a therapeutic strategy for malignant gliomas.
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Affiliation(s)
- Chen Jin
- Department of NeurosurgeryXiangya HospitalCentral South UniversityChangshaChina
| | - Jie Zhao
- Department of NeurosurgeryXiangya HospitalCentral South UniversityChangshaChina
| | - Zhi‐Ping Zhang
- Department of NeurosurgeryXiangya HospitalCentral South UniversityChangshaChina
| | - Ming Wu
- Department of NeurosurgeryXiangya HospitalCentral South UniversityChangshaChina
| | - Jian Li
- Department of NeurosurgeryXiangya HospitalCentral South UniversityChangshaChina
| | - Bo Liu
- Department of NeurosurgeryXiangya HospitalCentral South UniversityChangshaChina
| | - Xin‐ Bin Liao
- Department of NeurosurgeryXiangya HospitalCentral South UniversityChangshaChina
| | - Yu‐Xiang Liao
- Department of NeurosurgeryXiangya HospitalCentral South UniversityChangshaChina
| | - Jing‐Ping Liu
- Department of NeurosurgeryXiangya HospitalCentral South UniversityChangshaChina
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Abstract
Non-coding RNAs participate in most cellular processes and play a causative role in several diseases. In addition to their relevance as targets or tools for therapy, ncRNAs have been extensively detected in body fluids supporting their role as easily accessible and minimally invasive biomarkers. However, the precise measurement of circulating ncRNAs remains challenging due to their low abundance and the heterogeneity of the ncRNA population (size, polyadenylation status, circular forms). Microarrays constitute a very powerful method to analyze the expression level and the splicing pattern of circulating ncRNAs since they preserve sample integrity (no need to remove globin or rRNA) and allow precise quantification of low-abundance transcripts (no limitation by read depth). This chapter describes the protocols used in our lab to extract and purify total RNAs from PAXgene RNA Blood Tubes and to perform RNA labeling and hybridization on the Clariom™ D microarrays from Affymetrix.
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16
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Rong Z, Xu J, Shi S, Tan Z, Meng Q, Hua J, Liu J, Zhang B, Wang W, Yu X, Liang C. Circular RNA in pancreatic cancer: a novel avenue for the roles of diagnosis and treatment. Am J Cancer Res 2021; 11:2755-2769. [PMID: 33456571 PMCID: PMC7806488 DOI: 10.7150/thno.56174] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 12/12/2020] [Indexed: 12/13/2022] Open
Abstract
Pancreatic cancer (PC), an important cause of cancer-related deaths worldwide, is one of the most malignant cancers characterized by a dismal prognosis. Circular RNAs (circRNAs), a class of endogenous ncRNAs with unique covalently closed loops, have attracted great attention in regard to various diseases, especially cancers. Compelling studies have suggested that circRNAs are aberrantly expressed in different cancer tissues and cell types, including PC. More specifically, circRNAs can modify the proliferation, progression, tumorigenesis and chemosensitivity of PC, and some circRNAs could serve as biomarkers for diagnosis and prognosis. Herein, we summarize what is currently known to be related to the biogenesis, functions and potential roles of human circRNAs in PC and their application prospects for PC clinical treatments.
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Lin Z, Lu S, Xie X, Yi X, Huang H. Noncoding RNAs in drug-resistant pancreatic cancer: A review. Biomed Pharmacother 2020; 131:110768. [PMID: 33152930 DOI: 10.1016/j.biopha.2020.110768] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/17/2020] [Accepted: 09/17/2020] [Indexed: 02/06/2023] Open
Abstract
Pancreatic cancer is the fourth-leading cause of cancer-related deaths and is expected to be the second-leading cause of cancer-related deaths in Europe and the United States by 2030. The high fatality rate of pancreatic cancer is ascribed to untimely diagnosis, early metastasis and limited responses to both chemotherapy and radiotherapy. Although gemcitabine, 5-fluorouracil and some other drugs can profoundly improve patient prognosis, most pancreatic cancer patients eventually develop drug resistance, leading to poor clinical outcomes. The underlying mechanisms of pancreatic cancer drug resistance are complicated and inconclusive. Interestingly, accumulating evidence has demonstrated that different noncoding RNAs (ncRNAs), such as microRNAs (miRNAs), long noncoding RNAs (lncRNAs) and circular RNAs (circRNAs), play a crucial role in pancreatic cancer resistance to chemotherapy reagents. In this paper, we systematically summarize the molecular mechanism underlying the influence of ncRNAs on the generation and development of drug resistance in pancreatic cancer and discuss the potential role of ncRNAs as prognostic markers and new therapeutic targets for pancreatic cancer.
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Affiliation(s)
- Zhengjun Lin
- Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan Province, China.
| | - Shiyao Lu
- Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan Province, China.
| | - Xubin Xie
- Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan Province, China.
| | - Xuyang Yi
- Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan Province, China.
| | - He Huang
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan Province, China; State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, School of Pre-Clinical Medicine/ Second Affiliated Hospital, Xinjiang Medical University, Urumqi, Xinjiang, 830011, China.
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18
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Wang Y, Lin Q, Song C, Ma R, Li X. Depletion of circ_0007841 inhibits multiple myeloma development and BTZ resistance via miR-129-5p/JAG1 axis. Cell Cycle 2020; 19:3289-3302. [PMID: 33131409 DOI: 10.1080/15384101.2020.1839701] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Circular RNAs (circRNAs) possess important regulatory effects on multiple myeloma (MM) progression. Here, we aimed at exploring the function of circ_0007841 in MM and the underlying molecular mechanism. Expression of circ_0007841, microRNA (miR)-129-5p and Jagged1 (JAG1) was determined via qRT-PCR or western blot assay. Methyl thiazolyl tetrazolium (MTT) assay was applied to examine cell viability and IC50 value of MM cells to bortezomib (BTZ). Colony formation assay was performed to analyze cell proliferation. Moreover, cell apoptosis was assessed by flow cytometry and western blot analysis. Cell metastasis was evaluated by wound healing assay and Transwell assay. Function of circ_0007841 in vivo was determined by xenograft tumor assay. Target relationship between miR-129-5p and circ_0007841 or JAG1 was confirmed via dual-luciferase reporter, RNA immunoprecipitation (RIP) and pull-down assays. The up-regulation of circ_0007841 and JAG1, and the down-regulation of miR-129-5p were detected in MM bone marrow aspirates and cells. Circ_0007841 knockdown significantly repressed cell proliferation, chemoresistance, and metastasis, while contributed to apoptosis of MM cells in vitro, and reduced tumor growth in vivo. Circ_0007841 targeted miR-129-5p, and miR-129-5p inhibition reversed impact of silencing of circ_0007841 on MM cells. JAG1 was a mRNA target of miR-129-5p, whose overexpression could undermine the miR-129-5p-mediated effects on MM cells. Circ_0007841 positively regulated JAG1 expression via absorbing miR-129-5p. Circ_0007841 knockdown inhibited MM cell proliferation, metastasis and chemoresistance through modulating miR-129-5p/JAG1 axis, suggesting that circ_0007841 might serve as a potential therapeutic target of MM.
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Affiliation(s)
- Yan Wang
- Department of Hematology, The Fifth Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China
| | - Quande Lin
- Department of Hematology, Henan Cancer Hospital , Zhengzhou, Henan, China
| | - Chunge Song
- Department of Hematology, The Fifth Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China
| | - Ruojin Ma
- Department of Hematology, The Fifth Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China
| | - Xiaojie Li
- Department of Hematology, The Fifth Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China
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Leng X, Huang G, Ding J, Ma F. Circ_0000043 promotes the proliferation, migration, invasiveness, and epithelial-mesenchymal transition in breast cancer cells via the miR-136-Smad3 axis. Biochem Cell Biol 2020; 99:277-285. [PMID: 33043682 DOI: 10.1139/bcb-2020-0219] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Circular RNAs (circRNAs) are tissue-specific RNAs with a more stable structure than linear RNAs, and their association with breast cancer (BC) is poorly understood. This study examined the biological effects of circ_0000043 in the progression of BC. In this study, expression of circ_0000043 in BC tissue samples was measured using quantitative real-time polymerase chain reaction. Immunohistochemistry and Western blot were used to detect the expression of Smad family member 3 (Smad3). CCK-8, wound healing, and Transwell assays were used to assess the effect of circ_0000043 on the proliferation, migration, and invasiveness of BC cells. Moreover, the binding relationships between circ_0000043 and miR-136, and miR-136 and Smad3 were detected by dual-luciferase reporter assay. Additionally, Western blot was used to detect the expressions of markers related to epithelial-mesenchymal transition, including E-cadherin, N-cadherin, and vimentin. Our results show that the expression of circ_0000043 is up-regulated in BC tissues and cell lines. The proliferation, migration, invasiveness, and epithelial-mesenchymal transition of BC cells were significantly inhibited by knockdown of circ_0000043, and overexpression of circ_0000043 had the opposite effects. Additionally, circ_0000043 up-regulate the expression of Smad3 by sponging miR-136. In conclusion, our study demonstrates that circ_0000043 promote the progression of BC via regulating the miR-136-Smad3 axis.
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Affiliation(s)
- Xiaoling Leng
- Department of Ultrasonography, The Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi 830011, Xinjiang, P.R. China
| | - Guofu Huang
- Department of Radio-Chemotherapy, The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, Xinjiang, P.R. China
| | - Jianbing Ding
- Department of Immunology, College of Basic Medicine, Xinjiang Medical University, Urumqi 830011, Xinjiang, P.R. China
| | - Fucheng Ma
- Department of Ultrasonography, The Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi 830011, Xinjiang, P.R. China
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You X, Zhang Y, Long Q, Liu Z, Ma X, Lu Z, Yang W, Feng Z, Zhang W, Teng Z, Zeng Y. Investigating aberrantly expressed microRNAs in peripheral blood mononuclear cells from patients with treatment‑resistant schizophrenia using miRNA sequencing and integrated bioinformatics. Mol Med Rep 2020; 22:4340-4350. [PMID: 33000265 PMCID: PMC7533444 DOI: 10.3892/mmr.2020.11513] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 07/31/2020] [Indexed: 12/14/2022] Open
Abstract
Treatment-resistant schizophrenia (TRS) is a common phenotype of schizophrenia that places a considerable burden on patients as well as on society. TRS is known for its tendency to relapse and uncontrollable nature, with a poor response to antipsychotics other than clozapine. Therefore, it is urgent to identify objective biological markers, so as to guide its treatment and associated clinical work. In the present study, the peripheral blood mononuclear cells (PBMCs) of patients with TRS and a healthy control group, which were gender-, age- and ethnicity-matched, were subjected to microRNA (miRNA/miR) sequencing to screen out the top three miRNAs with the highest fold change values. These were then validated in the TRS (n=34) and healthy control (n=31) groups by reverse transcription-quantitative PCR. For two of the top three miRNAs, the PCR results were in accordance with the sequencing result (P<0.01), while the third miRNA exhibited the opposite trend (P<0.01). To elucidate the functions of these two miRNAs, Homo sapiens (hsa)-miR-218-5p and hsa-miR-1262 and their regulatory network, target gene prediction was first performed using online TargetScan and Diana-micro T software. Bioinformatics analysis was then performed using functional enrichment analysis to determine the Gene Ontology terms in the category biological process and the Kyoto Encyclopedia of Genes and Genomes pathways. It was revealed that these target genes were markedly associated with the nervous system and brain function, and it was obvious that the differentially expressed miRNAs most likely participated in the pathogenesis of TRS. A receiver operating characteristic curve was generated to confirm the distinct diagnostic value of these two miRNAs. It was concluded that aberrantly expressed miRNAs in PMBCs may be implicated in the pathogenesis of TRS and may serve as specific peripheral blood-based biomarkers for the early diagnosis of TRS.
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Affiliation(s)
- Xu You
- Research Management Department, The Sixth Affiliated Hospital, Kunming Medical University, Yuxi, Yunnan 653100, P.R. China
| | - Yunqiao Zhang
- Research Management Department, The Sixth Affiliated Hospital, Kunming Medical University, Yuxi, Yunnan 653100, P.R. China
| | - Qing Long
- Research Management Department, The Sixth Affiliated Hospital, Kunming Medical University, Yuxi, Yunnan 653100, P.R. China
| | - Zijun Liu
- Research Management Department, The Sixth Affiliated Hospital, Kunming Medical University, Yuxi, Yunnan 653100, P.R. China
| | - Xiao Ma
- Research Management Department, The Sixth Affiliated Hospital, Kunming Medical University, Yuxi, Yunnan 653100, P.R. China
| | - Zixiang Lu
- Psychiatric Ward, Honghe Second People's Hospital, Honghe, Yunnan 654399, P.R. China
| | - Wei Yang
- Psychiatric Ward, Yuxi Second People's Hospital, Yuxi, Yunnan 653100, P.R. China
| | - Ziqiao Feng
- Research Management Department, The Sixth Affiliated Hospital, Kunming Medical University, Yuxi, Yunnan 653100, P.R. China
| | - Wengyu Zhang
- Research Management Department, The Sixth Affiliated Hospital, Kunming Medical University, Yuxi, Yunnan 653100, P.R. China
| | - Zhaowei Teng
- Research Management Department, The Sixth Affiliated Hospital, Kunming Medical University, Yuxi, Yunnan 653100, P.R. China
| | - Yong Zeng
- Research Management Department, The Sixth Affiliated Hospital, Kunming Medical University, Yuxi, Yunnan 653100, P.R. China
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Zhang B, Li F, Zhu Z, Ding A, Luo J. CircRNA CDR1as/miR-1287/Raf1 Axis Modulates Hepatocellular Carcinoma Progression Through MEK/ERK Pathway. Cancer Manag Res 2020; 12:8951-8964. [PMID: 33061591 PMCID: PMC7522432 DOI: 10.2147/cmar.s252679] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 08/18/2020] [Indexed: 12/15/2022] Open
Abstract
Background Hepatocellular carcinoma (HCC) is a common lethal malignant tumor worldwide. Circular RNAs (circRNAs) have been reported to affect the development of human cancers, including HCC. In this project, we aim to clarify the functional effect of circular CDR1as (circ_CDR1as) on HCC progression. Methods Quantitative real-time polymerase chain reaction (qRT-PCR) or Western blot is implemented to detect the expression of circ_CDR1as, microRNA (miR)-1287 and Raf-1 proto-oncogene, serine/threonine kinase (Raf1). Cell proliferation is assessed via colony formation and 3-(4, 5)-dimethylthiazole-2-y1)-2, 5-biphenyl tetrazolium bromide (MTT) assays. Cell migration and invasion are measured by Transwell assay. The target relationship between miR-1287 and circ_CDR1as or Raf1 is validated through dual-luciferase reporter assay. The levels of epithelia–mesenchymal transition (EMT) markers and the MEK/ERK signal pathway-related proteins are examined by Western blot. Model in nude mice is constructed to determine the role of circ_CDR1as in vivo. Results Expression of circ_CDR1as and Raf1 is elevated, while miR-1287 expression is decreased in HCC. Depletion of circ_CDR1as or Raf1 could inhibit proliferation and metastasis of HCC cells. Besides, circ_CDR1as regulates Raf1 expression by targeting miR-1287. MiR-1287 upregulation or Raf1 depletion could partially counterbalance circ_CDR1as depletion-mediated inhibitory effects on HCC cell behaviors. Moreover, circ_CDR1as depletion represses HCC progression through inactivating MEK/ERK pathway. In addition, circ_CDR1as depletion suppresses tumor growth in vivo via regulating miR-1287/Raf1 pathway. Conclusion Circ_CDR1as depletion inhibits HCC cell proliferation and metastasis by miR-1287/Raf1 and MEK/ERK pathways, highlighting a promising molecular target for HCC treatment.
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Affiliation(s)
- Bashan Zhang
- Department of Clinical Laboratory, Affiliated Dongguan People's Hospital, Southern Medical University of Dongguan, Dongguan City, Guangdong Province, People's Republic of China
| | - Fei Li
- Department of Clinical Laboratory, Affiliated Dongguan People's Hospital, Southern Medical University of Dongguan, Dongguan City, Guangdong Province, People's Republic of China
| | - Zinian Zhu
- Department of Clinical Laboratory, Affiliated Dongguan People's Hospital, Southern Medical University of Dongguan, Dongguan City, Guangdong Province, People's Republic of China
| | - Aijiao Ding
- Department of Clinical Laboratory, Affiliated Dongguan People's Hospital, Southern Medical University of Dongguan, Dongguan City, Guangdong Province, People's Republic of China
| | - Jintong Luo
- Department of Clinical Laboratory, Affiliated Dongguan People's Hospital, Southern Medical University of Dongguan, Dongguan City, Guangdong Province, People's Republic of China
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Rozitis E, Johnson B, Cheng YY, Lee K. The Use of Immunohistochemistry, Fluorescence in situ Hybridization, and Emerging Epigenetic Markers in the Diagnosis of Malignant Pleural Mesothelioma (MPM): A Review. Front Oncol 2020; 10:1742. [PMID: 33014860 PMCID: PMC7509088 DOI: 10.3389/fonc.2020.01742] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 08/04/2020] [Indexed: 12/13/2022] Open
Abstract
Malignant pleural mesothelioma (MPM) is an aggressive asbestos related disease that is generally considered to be difficult to diagnose, stage and treat. The diagnostic process is continuing to evolve and requires highly skilled pathology input, and generally an extensive list of biomarkers for definitive diagnosis. Diagnosis of MPM requires histological evidence of invasion by malignant mesothelial cells often confirmed by various immunohistochemical biomarkers in order to separate it from pleural metastatic carcinoma. Often when invasion of neoplastic mesothelial cells into adjacent tissue is not apparent, further immunohistochemical testing - namely BAP1 and MTAP, as well as FISH testing for loss of p16 (CDKN2A) are used to separate reactive mesothelial proliferation due to benign processes, from MPM. Various combinations of these markers, such as BAP1 and/or MTAP immunohistochemistry alongside FISH testing for loss of p16, have shown excellent sensitivity and specificity in the diagnosis of MPM. Additionally, over the recent years, research into epigenetic marker use in the diagnosis of MPM has gained momentum. Although still in their research stages, various markers in DNA methylation, long non-coding RNA, micro RNA, circular RNA, and histone modifications have all been found to support diagnosis of MPM with generally good sensitivity and specificity. Many of these studies are however, limited by small sample sizes or other study limitations and further research into the area would be beneficial. Epigenetic markers show promise for use in the future to facilitate the diagnosis of MPM.
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Affiliation(s)
- Eric Rozitis
- Sydney Medical School, The University of Sydney, Sydney, NSW, Australia
| | - Ben Johnson
- Asbestos Diseases Research Institute, Concord, NSW, Australia
| | - Yuen Yee Cheng
- Asbestos Diseases Research Institute, Concord, NSW, Australia
| | - Kenneth Lee
- Sydney Medical School, The University of Sydney, Sydney, NSW, Australia.,Asbestos Diseases Research Institute, Concord, NSW, Australia.,Anatomical Pathology Department, NSW Health Pathology, Concord Repatriation General Hospital, Concord, NSW, Australia
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23
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de Gonzalo-Calvo D, Vea A, Bär C, Fiedler J, Couch LS, Brotons C, Llorente-Cortes V, Thum T. Circulating non-coding RNAs in biomarker-guided cardiovascular therapy: a novel tool for personalized medicine? Eur Heart J 2020; 40:1643-1650. [PMID: 29688487 PMCID: PMC6528150 DOI: 10.1093/eurheartj/ehy234] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 12/22/2017] [Accepted: 04/06/2018] [Indexed: 02/06/2023] Open
Abstract
Current clinical guidelines emphasize the unmet need for technological innovations to guide physician decision-making and to transit from conventional care to personalized cardiovascular medicine. Biomarker-guided cardiovascular therapy represents an interesting approach to inform tailored treatment selection and monitor ongoing efficacy. However, results from previous publications cast some doubts about the clinical applicability of biomarkers to direct individualized treatment. In recent years, the non-coding human transcriptome has emerged as a new opportunity for the development of novel therapeutic strategies and biomarker discovery. Non-coding RNA (ncRNA) signatures may provide an accurate molecular fingerprint of patient phenotypes and capture levels of information that could complement traditional markers and established clinical variables. Importantly, ncRNAs have been identified in body fluids and their concentrations change with physiology and pathology, thus representing promising non-invasive biomarkers. Previous publications highlight the translational applicability of circulating ncRNAs for diagnosis and prognostic stratification within cardiology. Numerous independent studies have also evaluated the potential of the circulating non-coding transcriptome to predict and monitor response to cardiovascular treatment. However, this field has not been reviewed in detail. Here, we discuss the state-of-the-art research into circulating ncRNAs, specifically microRNAs and long non-coding RNAs, to support clinical decision-making in cardiovascular therapy. Furthermore, we summarize current methodological and conceptual limitations and propose future steps for their incorporation into personalized cardiology. Despite the lack of robust population-based studies and technical barriers, circulating ncRNAs emerge as a promising tool for biomarker-guided therapy.
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Affiliation(s)
- David de Gonzalo-Calvo
- Biomedical Research Institute Sant Pau (IIB Sant Pau), Av. Sant Antoni Maria Claret 167, Pavelló del Convent, Barcelona, Spain.,Institute of Health Carlos III, CIBERCV, Av. Monforte de Lemos 5, Madrid, Spain.,Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover, Germany.,Institute of Biomedical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), C/ Rosselló 161, Barcelona, Spain
| | - Angela Vea
- Biomedical Research Institute Sant Pau (IIB Sant Pau), Av. Sant Antoni Maria Claret 167, Pavelló del Convent, Barcelona, Spain
| | - Christian Bär
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover, Germany
| | - Jan Fiedler
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover, Germany
| | - Liam S Couch
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover, Germany.,National Heart and Lung Institute, Imperial College London, Dovehouse Street, London, UK
| | - Carlos Brotons
- Biomedical Research Institute Sant Pau (IIB Sant Pau), Sardenya Primary Health Care Center, C/ Sardenya 466, Barcelona, Spain
| | - Vicenta Llorente-Cortes
- Biomedical Research Institute Sant Pau (IIB Sant Pau), Av. Sant Antoni Maria Claret 167, Pavelló del Convent, Barcelona, Spain.,Institute of Health Carlos III, CIBERCV, Av. Monforte de Lemos 5, Madrid, Spain.,Institute of Biomedical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), C/ Rosselló 161, Barcelona, Spain
| | - Thomas Thum
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover, Germany.,National Heart and Lung Institute, Imperial College London, Dovehouse Street, London, UK.,Excellence Cluster REBIRTH, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover, Germany
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24
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Yang Y, Dai E, Wang S, Bai Y. Whole Transcriptome RNA Sequencing Identified circ_022743, circ_052666, and circ_004452 Were Associated with Colon Cancer Development. DNA Cell Biol 2020; 39:1825-1837. [PMID: 32799546 DOI: 10.1089/dna.2019.5320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The objective of this study was to identify the key circular RNAs (circRNAs) related to the development of colon cancer. High-throughput RNA sequencing on eight early-stage (ES) and eight later stage (LS) colon tumor tissues, and eight normal tissues, was performed. Differentially expressed circRNAs and differentially expressed mRNAs were identified. Functional enrichment analysis and the miRNA-circRNA-mRNA network were performed. In addition, the differential expression levels of key circRNAs were verified using real-time quantitative PCR (qPCR). In total, 408, 472, and 278 differentially expressed circRNAs were identified in ES versus normal control (N), LS versus N, and LS versus ES groups, respectively. Functional enrichment analysis showed that circ_052666 was significantly enriched in "extracellular matrix/receptor interaction"; circ_022743 was remarkably enriched in "neurotrophin signaling pathway"; and circ_004452 was observably enriched in "TGF-β signaling pathway." Moreover, key miRNA-circRNA-mRNA relationships, such as hsa-miR-29b/c-3p-circ_052666-COL1A1 and hsa-miR-1294-circ_004452-left-right determination factor 1 (LEFTY1), were identified. Furthermore, qPCR showed consistent results with RNA sequencing. Our findings indicate that key circRNAs, such as circ_022743, circ_052666, and circ_004452, may be involved in colon cancer development, and could be used as potential biomarkers for the diagnosis and treatment of this disease.
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Affiliation(s)
- Yang Yang
- Department of Oncology and Hematology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Enyong Dai
- Department of Oncology and Hematology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Shibao Wang
- Department of Oncology and Hematology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Yuansong Bai
- Department of Oncology and Hematology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
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25
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Li H, Xia T, Guan Y, Yu Y. Sevoflurane Regulates Glioma Progression by Circ_0002755/miR-628-5p/MAGT1 Axis. Cancer Manag Res 2020; 12:5085-5098. [PMID: 32669871 PMCID: PMC7335772 DOI: 10.2147/cmar.s242135] [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: 12/12/2019] [Accepted: 05/27/2020] [Indexed: 12/12/2022] Open
Abstract
Background Glioma is a common malignant tumor worldwide. Sevoflurane (Sev) has been reported to inhibit the metastasis of glioma cells, but the underlying molecular mechanism needs further exploration. Methods Cell Counting Kit-8 (CCK8) assay was used to check cell viability. Flow cytometry assay was hired to check cell apoptosis. The protein levels of B-cell lymphoma-2 (Bcl-2), BCL2-Associated X (Bax), hexokinase 2 (HK2) and magnesium transporter 1 (MAGT1) in samples were measured by Western blot. The abilities of cell migration and invasion were estimated by transwell assay. Glucose colorimetric assay kit and lactate colorimetric assay kit were used to check glucose consumption and lactate production, respectively. Quantitative real-time polymerase chain reaction (qRT-PCR) was performed to detect the levels of circular RNA (circRNA) circ_0002755 (also known as the circRNA1656) and microRNA (miR)-628-5p in samples. The interaction between miR-628-5p and circ_0002755 or MAGT1 was predicated by starBase, which was verified by the dual-luciferase reporter assay. Xenograft tumor model was established to explore the biological role of circ_0002755 in vivo. Results Sev inhibited cell viability, migration, invasion and promoted cell apoptosis, and also reduced glucose consumption and lactate production. Circ_0002755 was significantly upregulated in glioma tissues and cells, while its level was notably declined under Sev treatment. Besides, overexpression of circ_0002755 overturned Sev-mediated inhibitory effect on glioma progression. Further research indicated that circ_0002755 targeted miR-628-5p, and miR-628-5p targeted MAGT1, and Sev modulated glioma progression via circ_0002755/miR-628-5p/MAGT1 axis. Moreover, Sev hindered tumor growth in vivo. Conclusion Sev mediated glioma progression via circ_0002755/miR-628-5p/MAGT1 axis.
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Affiliation(s)
- Haoyi Li
- Department of Anaesthesiology, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, People's Republic of China
| | - Tian Xia
- Department of Anaesthesiology, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, People's Republic of China
| | - Yilin Guan
- Department of Anaesthesiology, Dalian Municipal Women and Children's Medical Center, Dalian, Liaoning 116037, People's Republic of China
| | - Yao Yu
- Department of Anaesthesiology, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, People's Republic of China
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26
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Zhuang C, Huang X, Yu J, Gui Y. Circular RNA hsa_circ_0075828 promotes bladder cancer cell proliferation through activation of CREB1. BMB Rep 2020. [PMID: 31072448 PMCID: PMC7061208 DOI: 10.5483/bmbrep.2020.53.2.059] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Circular RNAs (circRNAs), one kind of non-coding RNA, have been reported as critical regulators for modulating gene expression in cancer. In this study, microarray analysis was used to screen circRNA expression profiles of bladder cancer (BC) 5637 cells, T24 cells and normal control SV-HUC-1 cells. The data from the microarray showed that hsa_circ_0075828 (named circCASC15) was most highly expressed in 5637 and T24 cells. circCASC15 was highly expressed in BC tissues and cells. Overexpression of circCASC15 was closely associated with BC tumor stage and promoted cell proliferation significantly in vitro and in vivo. Mechanistically, circCASC15 could act as miR-1224-5p sponge to activate the expression of CREB1 to promote cell proliferation in BC. In short, circCASC15 promotes cell proliferation in BC, which might be a new molecular target for BC diagnosis and therapy.
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Affiliation(s)
- Chengle Zhuang
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Institute of Urology, Peking University Shenzhen Hospital, Shenzhen-Peking University-the Hong Kong University of Science and Technology Medical Center, Shenzhen 518000, PR China
| | - Xinbo Huang
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Institute of Urology, Peking University Shenzhen Hospital, Shenzhen-Peking University-the Hong Kong University of Science and Technology Medical Center, Shenzhen 518000, PR China
| | - Jing Yu
- Department of Laboratory Medicine, Peking University Shenzhen Hospital, Shenzhen 518000, PR China
| | - Yaoting Gui
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Institute of Urology, Peking University Shenzhen Hospital, Shenzhen-Peking University-the Hong Kong University of Science and Technology Medical Center, Shenzhen 518000, PR China
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27
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Li H, Heng B, Ouyang P, Xie X, Zhang T, Chen G, Chen Z, Cheang K, Lai C. Comprehensive profiling of circRNAs and the tumor suppressor function of circHIPK3 in clear cell renal carcinoma. J Mol Histol 2020; 51:317-327. [PMID: 32409849 DOI: 10.1007/s10735-020-09882-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Accepted: 05/09/2020] [Indexed: 12/24/2022]
Abstract
Increasing evidence has indicated that circular RNAs (circRNAs) play a key role in the development and progression of diverse cancers, but their role in clear cell renal carcinoma (CCRCC) tumorigenesis is not well understood. In this study, we firstly performed comprehensive circRNA-seq from CCRCC tissues and pair-matched adjacent normal tissues. In total, 1184 circRNAs were dysregulated in human CCRCC tissues compared with those in adjacent normal tissues. We randomly selected four circRNAs, including circHIPK3 (circBase ID: hsa_circ_0000284), to test the circRNA-seq data in another 40 CCRCC tissues by quantitative real-time PCR (qRT-PCR). Furthermore, we found that circHIPK3 was downregulated in CCRCC tissues and cell lines. Overexpression of circHIPK3 effectively suppressed CCRCC cell invasion and migration in vitro, and inhibited CCRCC cell proliferation in vitro and in vivo. Moreover, bioinformatic analysis and luciferase reporter assay showed that circHIPK3 targeted miR-637 in CCRCC cells. Hence, CircHIPK3 may represent a tumor suppressor and target miR-637 in clear cell renal carcinoma.
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Affiliation(s)
- Haomin Li
- Department of Urology, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Road, Guangzhou, China
| | - Baoli Heng
- Yingde Center, Institute of Kidney Surgery, Jinan University, Guangdong, China.
- Department of Urology, People's Hospital of Yingde City, Yingde, China.
| | - Peng Ouyang
- Department of Urology, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Road, Guangzhou, China
| | - Xuexia Xie
- Department of Urology, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Road, Guangzhou, China
| | - Tingshun Zhang
- Department of Urology, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Road, Guangzhou, China
| | - Guo Chen
- Department of Urology, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Road, Guangzhou, China
| | - Zheng Chen
- Department of Urology, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Road, Guangzhou, China
| | - Kahong Cheang
- Centor Medico Kong, Wa-Estrada do Arco NO. S124, Ki Kuan Bairro, AZ, Macau
| | - Caiyong Lai
- Department of Urology, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Road, Guangzhou, China.
- Yang Xi General Hospital People's Hospital, Yangjiang, China.
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28
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Drula R, Braicu C, Harangus A, Nabavi SM, Trif M, Slaby O, Ionescu C, Irimie A, Berindan-Neagoe I. Critical function of circular RNAs in lung cancer. WILEY INTERDISCIPLINARY REVIEWS-RNA 2020; 11:e1592. [PMID: 32180372 DOI: 10.1002/wrna.1592] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 02/11/2020] [Accepted: 02/12/2020] [Indexed: 12/12/2022]
Abstract
Lung cancer is one of the main causes of cancer-related death in the world, especially due to its frequency and ineffective therapeutically approaches in the late stages of the disease. Despite the recent advent of promising new targeted therapies, lung cancer diagnostic strategies still have difficulty in identifying the disease at an early stage. Therefore, the characterizations of more sensible and specific cancer biomarkers have become an important goal for clinicians. Circular RNAs (circRNAs), a type of RNA with covalently closed continuous loop structures that display high structural resistance and tissue specificity pointed toward a potential biomarker role. Current investigations have identified that circRNAs have a prominent function in the regulation of oncogenic pathways, by regulating gene expression both at transcriptional and post-transcriptional level. The aim of this review is to provide novel information regarding the implications of circRNAs in lung cancer, with an emphasis on the role in disease development and progression. Initially, we explored the potential utility of circRNAs as biomarkers, focusing on function, mechanisms, and correlation with disease progression in lung cancer. Further, we will describe the interaction between circRNAs and other non-coding species of RNA (particularly microRNA) and their biological significance in lung cancer. Describing the nature of these interactions and their therapeutic potential will provide additional insight regarding the altered molecular landscape of lung cancer and consolidate the potential clinical value of these circular transcripts. This article is categorized under: RNA Structure and Dynamics > Influence of RNA Structure in Biological Systems RNA in Disease and Development > RNA in Disease RNA in Disease and Development > RNA in Development.
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Affiliation(s)
- Rares Drula
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cornelia Braicu
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Antonia Harangus
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,"Leon Daniello" Pneumology Clinic, Cluj-Napoca, Romania
| | - Seyed M Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | | | - Ondrej Slaby
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic.,Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Calin Ionescu
- 5th Surgical Department, Municipal Hospital, Cluj-Napoca, Romania.,Department of Surgery, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Alexandru Irimie
- Department of Surgery, The Oncology Institute "Prof. Dr. Ion Chiricuta", Cluj-Napoca, Romania.,Department of Surgical Oncology and Gynecological Oncology, University of Medicine and Pharmacy Iuliu Hatieganu, Cluj-Napoca, Romania
| | - Ioana Berindan-Neagoe
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,MEDFUTURE-Research Center for Advanced Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, Cluj-Napoca, Romania.,Department of Functional Genomics and Experimental Pathology, The Oncology Institute Prof. Dr. Ion Chiricuta, Cluj-Napoca, Romania
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Correia de Sousa M, Gjorgjieva M, Dolicka D, Sobolewski C, Foti M. Deciphering miRNAs' Action through miRNA Editing. Int J Mol Sci 2019; 20:E6249. [PMID: 31835747 PMCID: PMC6941098 DOI: 10.3390/ijms20246249] [Citation(s) in RCA: 489] [Impact Index Per Article: 97.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/04/2019] [Accepted: 12/06/2019] [Indexed: 12/13/2022] Open
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs with the capability of modulating gene expression at the post-transcriptional level either by inhibiting messenger RNA (mRNA) translation or by promoting mRNA degradation. The outcome of a myriad of physiological processes and pathologies, including cancer, cardiovascular and metabolic diseases, relies highly on miRNAs. However, deciphering the precise roles of specific miRNAs in these pathophysiological contexts is challenging due to the high levels of complexity of their actions. Indeed, regulation of mRNA expression by miRNAs is frequently cell/organ specific; highly dependent on the stress and metabolic status of the organism; and often poorly correlated with miRNA expression levels. Such biological features of miRNAs suggest that various regulatory mechanisms control not only their expression, but also their activity and/or bioavailability. Several mechanisms have been described to modulate miRNA action, including genetic polymorphisms, methylation of miRNA promoters, asymmetric miRNA strand selection, interactions with RNA-binding proteins (RBPs) or other coding/non-coding RNAs. Moreover, nucleotide modifications (A-to-I or C-to-U) within the miRNA sequences at different stages of their maturation are also critical for their functionality. This regulatory mechanism called "RNA editing" involves specific enzymes of the adenosine/cytidine deaminase family, which trigger single nucleotide changes in primary miRNAs. These nucleotide modifications greatly influence a miRNA's stability, maturation and activity by changing its specificity towards target mRNAs. Understanding how editing events impact miRNA's ability to regulate stress responses in cells and organs, or the development of specific pathologies, e.g., metabolic diseases or cancer, should not only deepen our knowledge of molecular mechanisms underlying complex diseases, but can also facilitate the design of new therapeutic approaches based on miRNA targeting. Herein, we will discuss the current knowledge on miRNA editing and how this mechanism regulates miRNA biogenesis and activity.
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Affiliation(s)
| | | | | | | | - Michelangelo Foti
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, CH-1211 Geneva, Switzerland; (M.C.d.S.); (M.G.); (D.D.); (C.S.)
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30
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Yang D, Qian H, Fang Z, Xu A, Zhao S, Liu B, Li D. Silencing circular RNA VANGL1 inhibits progression of bladder cancer by regulating miR-1184/IGFBP2 axis. Cancer Med 2019; 9:700-710. [PMID: 31758655 PMCID: PMC6970048 DOI: 10.1002/cam4.2650] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/10/2019] [Accepted: 10/10/2019] [Indexed: 12/30/2022] Open
Abstract
Circular RNA VANGL1 (circVANGL1) is generated from two exons of the Van Gogh‐like 1 (VANGL1) gene and serves as a tumor promoter by sponging certain microRNAs (miRNAs). However, the role of circVANGL1 in bladder cancer (BC) is still unclear. So, in order to investigate the role of circVANGL1 in BC, quantitative reverse transcription‐polymerase chain reaction (qRT‐PCR) was employed to evaluate the circVANGL1 expression in tumor tissues from BC patients and in BC cell lines. Small interfering RNA against circVANGL1 was constructed and stably transfected into human bladder epithelium immortalized cells (SV‐HUC). Cell invasion and migration were detected in Transwell chambers, cell proliferation was determined by CCK8 assays, and tumorigenesis in nude mice was examined to assess the effect of circVANGL1 in BC. Subcellular localization of circVANGL1 was confirmed by fluorescence in situ hybridization. The interactive relationships among circVANGL1, miRNA, and relative proteins were confirmed by luciferase reporter assays. The results showed that circVANGL1 was upregulated in both BC tissues and cell lines. Silencing the expression of circVANGL1 suppressed cell invasion, migration, and proliferation during in vitro experiments. Mechanistically, we demonstrated that circVANGL1 upregulated the expression of miR‐1184 target gene insulin‐like growth factor‐binding protein 2 (IGFBP2) by sponging miR‐1184, which promoted the aggressive biological behaviors of BC. Taken together, our results indicate that circVANGL1 acts as a tumor promoter through the novel circVANGL1/miR‐1184/IGFBP2 axis. Hopefully, our study will provide new ideas for the clinical treatment of BC.
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Affiliation(s)
- Dengke Yang
- Department of Urinary Surgery, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Haining Qian
- Department of Urinary Surgery, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zhen Fang
- Department of Urinary Surgery, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - An Xu
- Department of Urinary Surgery, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Shutian Zhao
- Department of Urinary Surgery, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Bingyan Liu
- Department of Interventional Radiology, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Dong Li
- Department of Urinary Surgery, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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31
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Chen H, Liu S, Li M, Huang P, Li X. circ_0003418 Inhibits Tumorigenesis And Cisplatin Chemoresistance Through Wnt/β-Catenin Pathway In Hepatocellular Carcinoma. Onco Targets Ther 2019; 12:9539-9549. [PMID: 31807029 PMCID: PMC6857737 DOI: 10.2147/ott.s229507] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 10/25/2019] [Indexed: 12/13/2022] Open
Abstract
Background Accumulating evidences indicate that circRNAs play important roles in the progression and chemoresistance of human cancers. The present study is designated for researching the roles of circ_0003418 in hepatocellular carcinoma (HCC). Methods We detected the expression profile of circ_0003418 in human HCC tissues and cell lines by quantitative real-time-PCR assays. CCK-8 assay, transwell migration assay, transwell invasion assay and drug-sensitivity analysis were carried out to estimate the effects of circ_0003418 on HCC cells' proliferation, migration, invasion and resistance to cisplatin, respectively. Mouse xenograft model was conducted to monitor the role of circ_0003418 in cisplatin resistance in vivo. Western blotting was performed to explore the changes of the Wnt/β-catenin pathway after knockdown of circ_0003418. The rescue experiment was carried out to explore circ_0003418-activated biological functions through Wnt/β-catenin pathway. Results The expression level of circ_0003418 was downregulated in HCC tissues and cell lines, and the level correlated with tumor size, TNM stage and HBsAg level in HCC patients. circ_0003418 knockdown promoted HCC cells' proliferation, migration, and invasion. Additionally, suppression of circ_0003418 enhanced cisplatin resistance of HCC cells in vivo and vitro. Knockdown of circ_0003418 activated the Wnt/β-catenin signalling pathway in HCC cells. The effect of circ-0003418 on sensitivity of HCC cells to cisplatin was reversed after inhibition of Wnt/β-catenin pathway. Conclusion circ-0003418 exerts an antitumorigenic role in HCC and advances the sensitivity of HCC cells to cisplatin by restraining the Wnt/β-catenin pathway. Thus, circ-0003418 may represent a novel biomarker and provide us a new strategy for the treatment of HCC.
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Affiliation(s)
- Hang Chen
- Department of Oncology and Hematology, The People's Hospital of Tongliang District, Chongqing 402560, People's Republic of China
| | - Shan Liu
- Department of Oncology and Hematology, The People's Hospital of Tongliang District, Chongqing 402560, People's Republic of China
| | - Molin Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing 400000, People's Republic of China
| | - Ping Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing 400000, People's Republic of China
| | - Xiaoping Li
- Department of Oncology and Hematology, The People's Hospital of Tongliang District, Chongqing 402560, People's Republic of China
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Cheng Y, Sun H, Wang H, Jiang W, Tang W, Lu C, Zhang W, Chen Z, Lv C. Star Circular RNAs In Human Cancer: Progress And Perspectives. Onco Targets Ther 2019; 12:8249-8261. [PMID: 31632075 PMCID: PMC6789430 DOI: 10.2147/ott.s215390] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 09/20/2019] [Indexed: 12/14/2022] Open
Abstract
Circular RNAs (circRNAs) are a recently discovered subclass of non-coding RNAs (ncRNAs) characterized by a covalently closed loop structure created by reverse splicing. Because they do not have a 5' cap structure and a 3' poly A tail, circRNAs have higher stability, abundance and evolutionary conservation than linear RNA between species. These features produce various potential biological functions of circRNAs, such as miRNA sponges, RNA-binding proteins that form RNA protein complexes. In recent years, more and more studies have shown that circRNAs play a vital role in the occurrence and development of human diseases. At the same time, their enormous potential as a biomarker and therapeutic target is also evolving. The purpose of this review is to summarize existing cancer-associated circRNAs and to try to find circRNAs that are abnormally expressed in many cancers. Therefore, we reviewed previous circRNAs studies related to cancer and selected them by statistics. The eight circRNAs that have the highest frequency in different cancers or involve key pathways are called star circRNAs. Here, we review the classification, features, and functions of emerging star circRNAs, with particular attention to the role of circRNAs in various cancers.
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Affiliation(s)
- Ye Cheng
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Hanzhi Sun
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Hanjin Wang
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Wei Jiang
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Weiwei Tang
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Chen Lu
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Wenling Zhang
- Department of Gastroenterology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Ziyi Chen
- Department of General Surgery, Zhongda Hospital, Medical School, Southeast University, Nanjing, Jiangsu, People’s Republic of China
| | - Chengyu Lv
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
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Yu P, Song H, Gao J, Li B, Liu Y, Wang Y. Vitamin D (1,25-(OH) 2D 3) regulates the gene expression through competing endogenous RNAs networks in high glucose-treated endothelial progenitor cells. J Steroid Biochem Mol Biol 2019; 193:105425. [PMID: 31302220 DOI: 10.1016/j.jsbmb.2019.105425] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 07/05/2019] [Accepted: 07/07/2019] [Indexed: 02/08/2023]
Abstract
Vitamin D (vit-D) supplementation can improve endothelial cell function in type 2 diabetes mellitus patients with vit-D insufficiency or deficiency. In the present study, we aimed to compare the expression profiles of circRNAs, lncRNAs, miRNAs, and mRNAs between 1,25-(OH)2D3-treated endothelial progenitor cells (EPCs) and control cells, and to further construct the 1,25-(OH)2D3-regulated ceRNA networks in EPCs. RNA sequencing was performed on the 1,25-(OH)2D3-treated EPCs and control cells derived from the bone marrow (BM). Bioinformatics analyses were performed to identify differentially expressed (DE) microRNAs (miRNAs), circular RNAs (circRNAs), mRNAs, and long non-coding RNAs (lncRNAs). Then Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses were conducted to predict the function of genes. Competing endogenous RNA (ceRNA) networks were constructed with Cytoscape software. 1,25-(OH)2D3 application induced changes in the expression profiles of 1791 mRNAs, 2726 lncRNAs, 205 circRNAs, and 45 miRNAs in EPCs treated with high levels of glucose. These DE RNAs were associated with MMP and GTPase activities, specific signaling pathways, and components of actin, extracellular matrix, or adherens junction. DE circRNAs, which functioned independently of their linear host genes, interacted with miRNAs to serve as miRNA sponges in complex ceRNA networks. The data indicated that circRNAs and lncRNAs comprised ceRNAs to sponge effects of miRNAs on the expressions of mRNAs following 1,25-(OH)2D3 application in EPCs. 1,25-(OH)2D3 improved the function of EPCs via associated ceRNA interaction networks in diabetes patients.
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Affiliation(s)
- Ping Yu
- Department of Endocrinology, Shenzhen Samii Medical Center, Shenzhen, 518000, China; Department of Endocrinology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China.
| | - Haiyan Song
- Department of Endocrinology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China
| | - Jiaxin Gao
- Department of Endocrinology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China
| | - Bo Li
- Department of Endocrinology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China
| | - Ying Liu
- Department of Endocrinology, Daqing People's Hospital (The Fifth Affiliated Hospital of Harbin Medical University), Daqing, 163316, China
| | - Yanhe Wang
- Department of Endocrinology, Shenzhen Samii Medical Center, Shenzhen, 518000, China; Department of Endocrinology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China
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34
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Lei X, Fang Z, Guo L. Predicting circRNA-Disease Associations Based on Improved Collaboration Filtering Recommendation System With Multiple Data. Front Genet 2019; 10:897. [PMID: 31608124 PMCID: PMC6773885 DOI: 10.3389/fgene.2019.00897] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 08/23/2019] [Indexed: 12/04/2022] Open
Abstract
With the development of high-throughput techniques, various biological molecules are discovered, which includes the circular RNAs (circRNAs). Circular RNA is a novel endogenous noncoding RNA that plays significant roles in regulating gene expression, moderating the microRNAs transcription as sponges, diagnosing diseases, and so on. Based on the circRNA particular molecular structures that are closed-loop structures with neither 5′-3′ polarities nor polyadenylated tails, circRNAs are more stable and conservative than the normal linear coding or noncoding RNAs, which makes circRNAs a biomarker of various diseases. Although some conventional experiments are used to identify the associations between circRNAs and diseases, almost the techniques and experiments are time-consuming and expensive. In this study, we propose a collaboration filtering recommendation system–based computational method, which handles the “cold start” problem to predict the potential circRNA–disease associations, which is named ICFCDA. All the known circRNA–disease associations data are downloaded from circR2Disease database (http://bioinfo.snnu.edu.cn/CircR2Disease/). Based on these data, multiple data are extracted from different databases to calculate the circRNA similarity networks and the disease similarity networks. The collaboration filtering recommendation system algorithm is first employed to predict circRNA–disease associations. Then, the leave-one-out cross validation mechanism is adopted to measure the performance of our proposed computational method. ICFCDA achieves the areas under the curve of 0.946, which is better than other existing methods. In order to further illustrate the performance of ICFCDA, case studies of some common diseases are made, and the results are confirmed by other databases. The experimental results show that ICFCDA is competent in predicting the circRNA–disease associations.
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Affiliation(s)
- Xiujuan Lei
- School of Computer Science, Shaanxi Normal University, Xi'an, China
| | - Zengqiang Fang
- School of Computer Science, Shaanxi Normal University, Xi'an, China
| | - Ling Guo
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
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35
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Schwarzenbach H, Gahan PB. Circulating non-coding RNAs in recurrent and metastatic ovarian cancer. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2019; 2:399-418. [PMID: 35582568 PMCID: PMC8992516 DOI: 10.20517/cdr.2019.51] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/15/2019] [Accepted: 08/21/2019] [Indexed: 12/25/2022]
Abstract
Ovarian cancer has a poor outcome because it is usually detected at advanced tumor stages, and the majority of the patients develop disease relapse as a result of chemotherapy resistance. This most lethal gynecological malignancy metastasizes within the peritoneal fluid or ascites to pelvic and distal organs. In ovarian cancer progression and metastasis, small non-coding RNAs (ncRNAs), including long noncoding RNAs and microRNAs have been recognized as important regulators. Their dysregulation modulates gene expression and cellular signal pathways and can be detected in liquid biopsies. In this review, we provide an overview on circulating plasma and serum ncRNAs participating in tumor cell migration and invasion, and contributing to recurrence and metastasis of ovarian cancer. We will also discuss the development of potential, novel therapies using ncRNAs as target molecules or tumor markers for ovarian cancer.
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Affiliation(s)
- Heidi Schwarzenbach
- Department of Tumor Biology, University Medical Center Hamburg-Eppendorf, Hamburg 20246, Germany
| | - Peter B Gahan
- Fondazione "Enrico Puccinelli" Onlus, Perugia 06123, Italy
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36
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Mei M, Wang Y, Li Z, Zhang M. Role of circular RNA in hematological malignancies. Oncol Lett 2019; 18:4385-4392. [PMID: 31611947 PMCID: PMC6781753 DOI: 10.3892/ol.2019.10836] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 08/13/2019] [Indexed: 12/18/2022] Open
Abstract
Compared with linear RNA, circular RNAs (circRNAs) form a covalently closed circular continuous loop and are highly conserved, stable and tissue-specific. In recent years, circRNAs received considerable attention in the diagnosis, classification, treatment and prognosis of hematological tumors. circRNAs function as microRNA sponges and competitive endogenous RNAs that play an essential role in the translation, regulation and interaction of proteins. The present review discussed the fundamental properties and functions of circRNAs and the latest advancements in the context of circRNAs in the clinical research of hematological malignancies, namely acute and chronic myeloid leukemia, and chronic lymphocytic leukemia. circRNAs show potential in the diagnosis and prognosis of various diseases and can be used as therapeutic targets and biomarkers for disease.
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Affiliation(s)
- Mei Mei
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Yingjun Wang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Zhaoming Li
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Mingzhi Zhang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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37
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Ou ZL, Luo Z, Wei W, Liang S, Gao TL, Lu YB. Hypoxia-induced shedding of MICA and HIF1A-mediated immune escape of pancreatic cancer cells from NK cells: role of circ_0000977/miR-153 axis. RNA Biol 2019; 16:1592-1603. [PMID: 31402756 DOI: 10.1080/15476286.2019.1649585] [Citation(s) in RCA: 113] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
One key to malignant progression of pancreatic cancer (PC) is the acquired ability of tumour cells to escape immune-mediated lysis. Hypoxic microenvironment plays a causal role in PC metastasis. According to previous studies, hypoxia could induce the upregulation of HIF1A, ADAM10 and sMICA, leading to decreased NKG2D in NK cells and tumour cells escape from immune surveillance and NK cell-mediated lysis. In the present study, in NK cells derived from high-HIF1A expression patients, the levels of internalization of MICA/B and NKG2D were obviously higher than those in low-HIF1A expression group; hypoxia dramatically upregulated the levels of sMICA culture supernatant of Panc-1 cells. Regarding the molecular mechanism, dysregulated circRNAs and miRNAs that might modulate HIF1A-mediated immune escape were selected and examined for detailed functions. The expression of circ_0000977 could be induced by hypoxia, and circ_0000977 knockdown enhanced the killing effect of NK cells on PC cells under hypoxia through HIF1A and ADAM10. HIF1 and ADAM10 were direct downstream targets of miR-153; circ_0000977 served as a sponge for miR-153 to counteract miR-153-mediated repression of HIF1 and ADAM10 mRNA through direct targeting in both 293T cells and Panc-1 cells. miR-153 inhibition exerted an opposing effect on HIF1A-mediated immune escape of PC cells to circ_0000977 knockdown; the effect of circ_0000977 knockdown were partially attenuated by miR-153 inhibition. In summary, circ_0000977/miR-153 axis modulates HIF1A-mediated immune escape of PC cells through miR-153 downstream targets HIF1A and ADAM10. We provided a novel mechanism of HIF1A-mediated immune escape of PC cells from the perspective of circRNAs-miRNA-mRNA axis. Abbreviations: Pancreatic cancer (PC); peripheral blood lymphocytes (PBLs); A Disintegrin and Metalloproteinase Domain 10 (ADAM10); MHC class I-related molecule A (MICA); soluble MICA (sMICA); membrane MICA (mMICA); Hypoxia-inducible factor 1-alpha (HI1FA); long non-coding RNAs (lncRNAs); non-coding RNAs (ncRNAs); natural killer (NK); Haematoxylin and eosin (H&E); Immunohistochemistry (IHC); natural killer group 2 member D (NKG2D).
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Affiliation(s)
- Zheng-Lin Ou
- Department of General Surgery, Xiangya Hospital, Central South University , Changsha , P.R. China
| | - Zhen Luo
- Department of General Surgery, The Third Xiangya Hospital, Central South University , Changsha , Hunan , P.R. China
| | - Wei Wei
- Department of General Surgery, Xiangya Hospital, Central South University , Changsha , P.R. China
| | - Shuai Liang
- Department of General Surgery, Xiangya Hospital, Central South University , Changsha , P.R. China
| | - Tai-Long Gao
- Department of Hepatobiliary Surgery, Hunan People's Hospital , Changsha , Hunan , P.R.China
| | - Ye-Bin Lu
- Department of General Surgery, Xiangya Hospital, Central South University , Changsha , P.R. China
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38
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Wei J, Yan Y, Chen X, Qian L, Zeng S, Li Z, Dai S, Gong Z, Xu Z. The Roles of Plant-Derived Triptolide on Non-Small Cell Lung Cancer. Oncol Res 2019; 27:849-858. [PMID: 30982492 PMCID: PMC7848329 DOI: 10.3727/096504018x15447833065047] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Over the past decade, natural compounds have been proven to be effective against many human diseases, including cancers. Triptolide (TPL), a diterpenoid triepoxide from the Chinese herb Tripterygium wilfordii Hook F, has exhibited attractive cytotoxic activity on several cancer cells. An increasing number of studies have emphasized the antitumor effects of TPL on non-small cell lung cancer (NSCLC). Here we mainly focused on the key molecular signaling pathways that lead to the inhibitory effects of TPL on human NSCLC, such as mitogen-activated protein kinases (MAPKs) modulation, inhibition of NF-κB activation, suppression of miRNA expression, etc. In addition, the effect of TIG on immune response in cancer patients is summarized for improved immune modulation utilization. However, the clinical use of TPL is often limited by its severe toxicity and water insolubility. Future clinical trials and drug delivery strategies that will evaluate the security and validate the underlying tumor-killing properties of TPL in human NSCLC are also to be discussed.
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Affiliation(s)
- Jie Wei
- *Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
- †National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Yuanliang Yan
- *Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
- †National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Xi Chen
- *Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
- †National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Long Qian
- *Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
- †National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Shuangshuang Zeng
- *Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
- †National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Zhi Li
- ‡Center for Molecular Medicine, Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Shuang Dai
- *Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
- †National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Zhicheng Gong
- *Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
- †National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Zhijie Xu
- §Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
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39
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Enguita FJ. New promising circulating RNA biomarkers for early diagnosis of lung adenocarcinoma. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:S130. [PMID: 31576337 PMCID: PMC6685864 DOI: 10.21037/atm.2019.05.70] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 05/27/2019] [Indexed: 01/22/2023]
Affiliation(s)
- Francisco J. Enguita
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Cardiomics Unit, Centro de Cardiologia da Universidade de Lisboa (CCUL), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
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40
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Osaki M, Okada F. Exosomes and Their Role in Cancer Progression. Yonago Acta Med 2019; 62:182-190. [PMID: 31320822 DOI: 10.33160/yam.2019.06.002] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 03/28/2019] [Indexed: 12/14/2022]
Abstract
Exosomes are a subset of extracellular vesicles and their size is approximately 100 nm in diameter. They are surrounded by a lipid bilayer membrane and secreted from almost all of cells. Exosomes are generated within the endocytic system as ILV (intraluminal membrane vesicle) and secreted during the fusion of MVB (multivesicular body) with the cell membrane. Recently it has been reported that exosomes modulate cell-cell communication contributing to the maintenance of tissue homeostasis by molecules including exosomes. Moreover, exosomes released from cancer cells are involved in cancer progression. Thus, data regarding the role of the exosomes in malignant cancer will lead to development of novel diagnostic and therapeutic methods.
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Affiliation(s)
- Mitsuhiko Osaki
- Division of Pathological Biochemistry, Department of Biomedical Sciences, School of Life Science, Tottori University Faculty of Medicine, Yonago 683-8503, Japan.,Chromosome Engineering Research Center, Tottori University, Yonago 683-8503, Japan
| | - Futoshi Okada
- Division of Pathological Biochemistry, Department of Biomedical Sciences, School of Life Science, Tottori University Faculty of Medicine, Yonago 683-8503, Japan.,Chromosome Engineering Research Center, Tottori University, Yonago 683-8503, Japan
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41
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Duan X, Li L, Gan J, Peng C, Wang X, Chen W, Peng D. Identification and functional analysis of circular RNAs induced in rats by middle cerebral artery occlusion. Gene 2019; 701:139-145. [DOI: 10.1016/j.gene.2019.03.053] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 03/05/2019] [Accepted: 03/22/2019] [Indexed: 01/01/2023]
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42
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Zhang M, Jiang D, Xie X, He Y, Lv M, Jiang X. miR-129-3p inhibits NHEJ pathway by targeting SAE1 and represses gastric cancer progression. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2019; 12:1539-1547. [PMID: 31933971 PMCID: PMC6947116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 01/25/2019] [Indexed: 06/10/2023]
Abstract
Gastric cancer (GC) is one of the leading malignancies worldwide and is also a leading cause of cancer-related mortality. Micro RNA (miRNA) is a group of short non-coding RNAs modulating gene expression through targeting the 3'UTR of genes. Peripheral blood exosome miRNAs are relatively stable and might be used as biomarkers for clinical diagnosis. In this study, we found a reduced level of miR-129-3p in GC tumor when compared with adjacent non-tumor tissues, and the peripheral blood exosome miR-129-3p level was also reduced when compared with healthy controls. Subsequently, we identified that miR-129-3p repressed the expression of SUMO-activating enzyme subunit 1 (SAE1) directly through targeting 3'UTR. miR-129-3p also inhibited the sumoylation modification of XRCC4 which disturbed the nuclear localization of XRCC4 and induced more DNA damage in GC cells. Furthermore, overexpression of miR-129-3p induced more cell apoptosis and inhibited GC cell proliferation, migration and invasion, indicating miR-129-3p is a powerful anti-tumor miRNA and has potential for GC treatment.
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Affiliation(s)
- Mingming Zhang
- Department of Gastroenterology, Qingdao University Affiliated Qingdao Municipal Hospital Jiaozhou Road 1#, Qingdao 266071, PR China
| | - Dalei Jiang
- Department of Gastroenterology, Qingdao University Affiliated Qingdao Municipal Hospital Jiaozhou Road 1#, Qingdao 266071, PR China
| | - Xiangjun Xie
- Department of Gastroenterology, Qingdao University Affiliated Qingdao Municipal Hospital Jiaozhou Road 1#, Qingdao 266071, PR China
| | - Yuanlong He
- Department of Gastroenterology, Qingdao University Affiliated Qingdao Municipal Hospital Jiaozhou Road 1#, Qingdao 266071, PR China
| | - Mei Lv
- Department of Gastroenterology, Qingdao University Affiliated Qingdao Municipal Hospital Jiaozhou Road 1#, Qingdao 266071, PR China
| | - Xiangjun Jiang
- Department of Gastroenterology, Qingdao University Affiliated Qingdao Municipal Hospital Jiaozhou Road 1#, Qingdao 266071, PR China
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43
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Chen X, Yang T, Wang W, Xi W, Zhang T, Li Q, Yang A, Wang T. Circular RNAs in immune responses and immune diseases. Theranostics 2019; 9:588-607. [PMID: 30809295 PMCID: PMC6376182 DOI: 10.7150/thno.29678] [Citation(s) in RCA: 183] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 12/13/2018] [Indexed: 02/06/2023] Open
Abstract
Circular RNAs (circRNAs) are novel clusters of endogenous noncoding RNAs (ncRNAs) that are widely expressed in eukaryotic cells. In contrast to the generation of linear RNA transcripts, circRNAs undergo a "back-splicing" process to form a continuous, covalently closed, stable loop structure without 5' or 3' polarities and poly (A) tails during posttranscriptional modification. Due to the widespread availability of several technologies, especially high-throughput RNA sequencing, numerous circRNAs have been discovered not only in mammals but also in plants and insects. Notably, due to their abilities to serve as microRNA (miRNA) "sponges", miRNA "reservoirs", regulate gene expression and encode proteins, circRNAs participate in the development and progression of different immune responses and immune diseases by enriching various forms of epigenetic modification. CircRNAs have been demonstrated to be expressed in a tissue-specific and pathogenesis-related manner during the occurrence of multiple immune diseases. Additionally, because of their circular configurations, expression in blood and peripheral tissues and coexistence with exosomes, circRNAs show inherent conservation along with environmental resistance stability and may be regarded as potential biomarkers or therapeutic targets for some immune diseases. In this review, we summarize the characteristics, functions and mechanisms of circRNAs and their involvement in immune responses and diseases. Although our knowledge of circRNAs remains preliminary, this field is worthy of deeper exploration and greater research efforts.
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Affiliation(s)
- Xu Chen
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Tian Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Wei Wang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Wenjin Xi
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Tianze Zhang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Qi Li
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Angang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Tao Wang
- Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
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44
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Ma Y, Zhang X, Wang YZ, Tian H, Xu S. Research progress of circular RNAs in lung cancer. Cancer Biol Ther 2018; 20:123-129. [PMID: 30403899 DOI: 10.1080/15384047.2018.1523848] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Lung cancer is one of the most common cancers and the leading cause of cancer-related death worldwide. Despite encouraging results achieved with targeted therapy in recent years, the early diagnosis and treatment of lung cancer remains a major problem. Circular RNA (circRNA), a type of RNA with covalently closed continuous loop structures, has structural stability and certain tissue specificity. Recent studies have found that circRNAs have an important role in tumor development and are expected to be revealed as new targets for tumor prediction and treatment. Research on the biological functions and regulation mechanisms of circRNAs in lung cancer is in its infancy but is gathering momentum. In this review, we discuss the properties, biogenesis, biological function, and research progress of circRNAs in lung cancer to provide a theoretical foundation and new directions for studies on circRNAs in lung cancer.
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Affiliation(s)
- Yi Ma
- a Department of thoracic surgery , First Affiliated Hospital of China Medical University , Shenyang , Liaoning , China
| | - Xin Zhang
- a Department of thoracic surgery , First Affiliated Hospital of China Medical University , Shenyang , Liaoning , China
| | - Yi-Zhi Wang
- a Department of thoracic surgery , First Affiliated Hospital of China Medical University , Shenyang , Liaoning , China
| | - Hao Tian
- a Department of thoracic surgery , First Affiliated Hospital of China Medical University , Shenyang , Liaoning , China
| | - Shun Xu
- a Department of thoracic surgery , First Affiliated Hospital of China Medical University , Shenyang , Liaoning , China
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Gong Y, Mao J, Wu D, Wang X, Li L, Zhu L, Song R. Circ-ZEB1.33 promotes the proliferation of human HCC by sponging miR-200a-3p and upregulating CDK6. Cancer Cell Int 2018; 18:116. [PMID: 30123094 PMCID: PMC6090603 DOI: 10.1186/s12935-018-0602-3] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 07/23/2018] [Indexed: 12/23/2022] Open
Abstract
Background Accumulating data indicated that circRNA plays important roles in regulating many biological processes of the tumor, the present study is designated for exploring roles of the circ-ZEB1.33-miR-200a-3p-CDK6 regulating axis in human hepatocellular carcinoma (HCC). Methods The regulation axis as predicted by using online tool circNet, the expression and correlation of circ-ZEB1.33-miR-200a-3p-CDK6 was verified in human HCC. The diagnostic value of both tumor and serum circ-ZEB1.33 was estimated by using clinical samples. The roles of circ-ZEB1.33-miR-200a-3p-CDK6 in regulating cell cycle were explored by using in vitro studies. Results Overexpression of circ-ZEB1.33 and CDK6, downregulation of miR-200a-3p were detected in human HCC tissues, negative correlation between circ-ZEB1.33 and miR-200a-3p, positive correlation between circ-ZEB1.33 and CDK6 were confirmed in human HCC tissues. Tissue and serum circ-ZEB1.33 were related to different TMN stages and prognosis in HCC patients. RNA pull-down assay implied that circ-ZEB1.33 could decrease miR-200a-3p by sponging miR-200a-3p, and the luciferase reporter assay indicated that miR-200a-3p could downregulate CDK6 transcription by targeting its 3′UTR. The in vitro assays indicated that circ-ZEB1.33 could promote the proliferation of HCC cells by increasing the percentage of S phase regulated by CDK6/Rb. Conclusion Proliferation promotion roles of the circ-ZEB1.33-miR-200a-3p-CDK6 regulating axis are existed and verified in human HCC, both tumor and serum circ-ZEB1.33 can serve as an indicator for the prognosis of HCC patients. Electronic supplementary material The online version of this article (10.1186/s12935-018-0602-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yuhua Gong
- Department of Clinical Laboratory, The Third People's Hospital of Zhenjiang, 300 Daijiamen, Zhenjiang, 212005 Jiangsu China
| | - Jinzhong Mao
- Department of Radiology, The Third People's Hospital of Zhenjiang, 300 Daijiamen, Zhenjiang, 212005 Jiangsu China
| | - Di Wu
- Department of Hepatosis Inpatient, The Third People's Hospital of Zhenjiang, 300 Daijiamen, Zhenjiang, 212005 Jiangsu China
| | - Xuemei Wang
- Department of Clinical Laboratory, The Third People's Hospital of Zhenjiang, 300 Daijiamen, Zhenjiang, 212005 Jiangsu China
| | - Long Li
- Department of Clinical Laboratory, The Third People's Hospital of Zhenjiang, 300 Daijiamen, Zhenjiang, 212005 Jiangsu China
| | - Liang Zhu
- Department of Clinical Laboratory, The Third People's Hospital of Zhenjiang, 300 Daijiamen, Zhenjiang, 212005 Jiangsu China
| | - Rong Song
- Department of Clinical Laboratory, The Third People's Hospital of Zhenjiang, 300 Daijiamen, Zhenjiang, 212005 Jiangsu China
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Vea A, Llorente-Cortes V, de Gonzalo-Calvo D. Circular RNAs in Blood. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1087:119-130. [PMID: 30259362 DOI: 10.1007/978-981-13-1426-1_10] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Recent advances in RNA sequencing and bioinformatic analysis have allowed the development of a new research field: circular RNAs (circRNAs). These members of the non-coding transcriptome are generated by backsplicing, which results in a covalently closed, single-stranded RNA molecule. To date, thousands of circRNAs have been identified in different human cell types. CircRNAs are evolutionarily conserved, highly stable, cell-/developmental stage-specific and have longer half-lives compared with linear RNAs. Interestingly, different studies have demonstrated that circRNAs are abundantly expressed in the bloodstream. In this chapter, we review the current knowledge of circRNA biology in blood cells and the cell-free compartment, including extracellular vesicles. The potential clinical application of blood circRNAs in the biomarker and therapy fields is also discussed. Finally, perspectives for future studies are proposed.
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Affiliation(s)
- Angela Vea
- Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain
| | - Vicenta Llorente-Cortes
- Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain.,Institute of Biomedical Research of Barcelona (IIBB) - Spanish National Research Council (CSIC), Barcelona, Spain.,CIBERCV, Institute of Health Carlos III, Madrid, Spain
| | - David de Gonzalo-Calvo
- Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain. .,Institute of Biomedical Research of Barcelona (IIBB) - Spanish National Research Council (CSIC), Barcelona, Spain. .,CIBERCV, Institute of Health Carlos III, Madrid, Spain.
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Abstract
Circular RNAs (circRNAs) are a novel family of non-coding endogenous RNAs discovered in all eukaryotic cells and generated through a particular mechanism of alternative splicing called "back-splicing". These molecules show multiple functions, by acting as modulators of gene and miRNA expression, and may have a role in several biological processes, such as cell proliferation and invasion with, tumour development and progression, and in several mechanisms underlying other diseases. Their presence has been shown to be abundant in several body fluids such as blood and saliva. Based on their biogenesis mechanism, circRNAs may be categorized into five classes: exonic circRNAs, intronic circRNAs, antisense circRNAs, sense overlapping circRNAs and intergenic circRNAs. Recently, the presence of circRNAs, in addition to that of miRNAs and long non-coding RNAs, has been detected also in small extracellular vesicles called exosomes. Investigating the presence and expression levels of serum exosomal circRNAs could allow us, in future, to discriminate cancer patients from healthy individuals, identifying new potential exosome-based cancer biomarkers.In this chapter, we briefly will describe the major features and functions of exosomal circRNAs, discussing their potential role as molecular biomarkers for diagnosis, prognosis and monitoring of complex diseases, including cancer.
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