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Zhang M, Yan X, Wen P, Bai W, Zhang Q. CircANKRD52 Promotes the Tumorigenesis of Hepatocellular Carcinoma by Sponging miR-497-5p and Upregulating BIRC5 Expression. Cell Transplant 2021; 30:9636897211008874. [PMID: 33845641 PMCID: PMC8058805 DOI: 10.1177/09636897211008874] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
CircRNAs participate in the pathogenesis of a variety of cancers. Previous studies showed that baculoviral IAP repeat containing 5 (BIRC5) can promote tumor progression. But, the mechanisms by which circRNAs regulate BIRC5 expression in hepatocellular carcinoma (HCC) remain unknown. The clinical prognosis of BIRC5 or miR-497-5p expression in patients with HCC was assessed by TCGA RNA-seq dataset. hsa_circ_0026939 (circANKRD52) or BIRC5 was identified to bind with miR-497-5p by luciferase gene report, RIP and circRIP assays. MTT, colony formation, Transwell assays and a xenograft tumor model were used to estimate the role of miR-497-5p or circANKRD52 in HCC cells. As a result, we found that elevated expression of BIRC5 or decreased expression of miR-497-5p was linked to poor survival in HCC. Restored expression of miR-497-5p repressed cell proliferation, colony formation and invasiveness by targeting BIRC5, but its inhibitor showed the opposite results. Furthermore, circANKRD52 possessed a tumor-promoting effect by acting as a sponge of miR-497-5p and thereby upregulated BIRC5 in HCC cells. In conclusion, our findings demonstrated that circANKRD52 enhances the tumorigenesis of HCC by sponging miR-497-5p and upregulating BIRC5 expression.
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Affiliation(s)
- Mingzhi Zhang
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin, China.,Department of Gastroenterology, The Third Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Xinxin Yan
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin, China.,Geriatric Department, Aerospace Central Hospital, Beijing, China
| | - Peihao Wen
- Department of Liver Transplantation, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenkun Bai
- Department of Ultrasonography, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Qingyu Zhang
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin, China
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Testicular orphan receptor 4 (TR4) promotes papillary thyroid cancer invasion via activating circ-FNLA/miR-149-5p/MMP9 signaling. MOLECULAR THERAPY-NUCLEIC ACIDS 2021; 24:755-767. [PMID: 33996257 PMCID: PMC8094593 DOI: 10.1016/j.omtn.2021.03.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 03/30/2021] [Indexed: 02/06/2023]
Abstract
The incidence and mortality of papillary thyroid cancer (PTC) have steadily increased. Although conventional therapies are very effective toward differentiated PTC patients, very limited therapeutic options are applicable to those patients with distant metastases. Therefore, better understanding of the molecular biology of metastatic PTC helps identify novel targets and facilitates the development of new therapies. In this study, we first found that testicular orphan receptor 4 (TR4) was significantly increased in PTC tumors spreading to lymph nodes compared to the paired primary tumors. Experimental evidence suggested that TR4 drove PTC progression via promoting its cell invasion and cell migration. Mechanistically, TR4 transcriptionally regulated the expression level of circ-filamin A (FLNA), which competed with matrix metalloproteinase 9 (MMP9) for microRNA (miR)-149-5p binding and led to an increased protein level of MMP9. Interruption assays with various gene manipulations verified that the TR4/circ-FLNA/miR-149-5p/MMP9 signaling axis played a central role in cell invasion and cell migration of PTC cells. Moreover, a xenografted mouse model also confirmed that the TR4/circ-FLNA signal promoted PTC tumor growth. Overall, our study pinpoints the oncogenic role of TR4 in PTC development, and the targeting of TR4/circ-FLNA/miR-149-5p/MMP9 signaling may be an alternative option for metastatic PTC patients.
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Circ-ITCH sponges miR-214 to promote the osteogenic differentiation in osteoporosis via upregulating YAP1. Cell Death Dis 2021; 12:340. [PMID: 33795657 PMCID: PMC8016856 DOI: 10.1038/s41419-021-03586-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 12/14/2022]
Abstract
Osteoporosis is the most prevailing primary bone disease and a growing health care burden. The aim of this study was to clarify the functional roles and mechanisms of the circ-ITCH regulating osteogenic differentiation of osteoporosis. Circ-ITCH and yes-associated protein 1 (YAP1) levels were downregulated, but the miR‐214 level was upregulated in osteoporotic mice and patients. Knockdown of circ-ITCH inhibited the alkaline phosphatase (ALP) activity, mineralized nodule formation, and expression of runt-related transcription factor 2 (RUNX2), osteopontin (OPN), and osteocalcin (OCN) during osteogenic induction. Furthermore, miR-214 was a target of circ-ITCH, knockdown of miR-214 could impede the regulatory effects of sh-circ-ITCH on osteogenic differentiation. Moreover, miR-214 suppressed hBMSCs osteogenic differentiation by downregulating YAP1. Finally, in vivo experiments indicated that overexpression of circ-ITCH could improve osteogenesis in ovariectomized mice. In conclusion, circ-ITCH upregulated YAP1 expression to promote osteogenic differentiation in osteoporosis via sponging miR-214. Circ-ITCH could act as a novel therapeutic target for osteoporosis.
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54
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Lyu N, Zeng Y, Kong Y, Chen Q, Deng H, Ou S, Bai Y, Tang H, Wang X, Zhao M. Ferroptosis is involved in the progression of hepatocellular carcinoma through the circ0097009/miR-1261/SLC7A11 axis. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:675. [PMID: 33987373 PMCID: PMC8106082 DOI: 10.21037/atm-21-997] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Background Circular RNAs (circRNAs) are a class of non-coding RNAs that have been demonstrated to play important roles in tumorigenesis. However, how circRNAs regulate the progression of hepatocellular cancer (HCC) remains unclear. Methods In the present study, circRNA microarray analyses were performed with HCC tissues to identify circRNAs that are differentially expressed. Quantitative reverse transcription polymerase chain reaction (qRT-PCR) analysis was conducted on HCC cell lines and tissues, and circ0097009 was found to be significantly upregulated. The functions of circ0097009 in HCC were investigated by a series of experiments, including cell proliferation, invasion, and mouse xenograft assays. Additionally, luciferase assays and RNA immunoprecipitation (RIP) assays were used to explore the interactions of circ0097009, microRNA-1261 (miR-1261), and solute carrier family 7 member 11 (SLC7A11) in HCC. Results Microarray analysis and qRT-PCR verified that circRNA, circ0097009, was significantly upregulated in HCC tissues and cell lines. Knockdown of circ0097009 inhibited the proliferation and invasion of HCC cells. Luciferase reporter assays showed that circ0097009 and SLC7A11 directly bound to miR-1261. Subsequent experiments showed that circ0097009 and SLC7A11 reciprocally regulated their expression via miR-1261 sponging by circ0097009. Conclusions Circ0097009 acts as a competing endogenous RNA to regulate the expression of SLC7A11, a key regulator of cancer cell ferroptosis, by sponging miR-1261 in HCC. Circ0097009 may be used as a diagnostic biomarker for HCC and as a potential target for HCC therapy.
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Affiliation(s)
- Ning Lyu
- Department of Minimally Invasive Interventional Radiology, Liver Cancer Study and Service Group, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangzhou, China
| | - Yan Zeng
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangzhou, China
| | - Yanan Kong
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangzhou, China
| | - Qifeng Chen
- Department of Minimally Invasive Interventional Radiology, Liver Cancer Study and Service Group, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangzhou, China
| | - Haijing Deng
- Department of Minimally Invasive Interventional Radiology, Liver Cancer Study and Service Group, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangzhou, China
| | - Shunling Ou
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangzhou, China
| | - Yanfang Bai
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangzhou, China
| | - Hailin Tang
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangzhou, China
| | - Xiaolan Wang
- Reproductive Center of Medicine, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Ming Zhao
- Department of Minimally Invasive Interventional Radiology, Liver Cancer Study and Service Group, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangzhou, China
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Ouyang Y, Chen J, Jiang L, Li Y, Hu Y, Li S, Huang J, Zeng Q. UVB-Induced ciRS-7 Activates Melanogenesis by Paracrine Effects. DNA Cell Biol 2021; 40:523-531. [PMID: 33687273 DOI: 10.1089/dna.2020.5489] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Antisense to the cerebellar degeneration-related protein 1 transcript (CDR1as or ciRS-7) is an important member of the circular RNA family and is involved in the regulation of numerous biological functions. Keratinocytes and fibroblasts (FBs) affect melanogenesis through paracrine effects. However, whether ciRS-7 is involved in melanogenesis by regulating paracrine effects remains unclear. This study demonstrates for the first time that ciRS-7 is highly expressed in keratinocytes, FBs, and melanocytes (MCs). Ultraviolet B (UVB) irradiation promotes ciRS-7 expression in keratinocytes and FBs. Following inhibition of ciRS-7 expression in keratinocytes and FBs, the culture supernatant from these cells inhibited melanogenesis of MCs. Further analyses revealed that the expression and secretion of fibroblast growth factor 2 (FGF2) and phosphorylation of STAT3 and AKT in keratinocytes and FBs were significantly downregulated following inhibition of ciRS-7 expression, whereas the level of miR-7 was increased. Overexpression of miR-7 in keratinocytes and FBs significantly inhibited the expression of FGF2. In conclusion, our findings demonstrate that UVB-induced ciRS-7 triggers melanogenesis in MCs through regulation of the miR-7/STAT3 and AKT/FGF2 paracrine axis in both keratinocytes and FBs. ciRS-7 may serve as a regulator in the development of pigmented skin diseases.
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Affiliation(s)
- Yujie Ouyang
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Jing Chen
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Ling Jiang
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Yumeng Li
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Yibo Hu
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Si Li
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Jinhua Huang
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Qinghai Zeng
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
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56
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Xiong D, He R, Dang Y, Wu H, Feng Z, Chen G. The Latest Overview of circRNA in the Progression, Diagnosis, Prognosis, Treatment, and Drug Resistance of Hepatocellular Carcinoma. Front Oncol 2021; 10:608257. [PMID: 33680930 PMCID: PMC7928415 DOI: 10.3389/fonc.2020.608257] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 12/18/2020] [Indexed: 12/24/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the main causes of tumor-related deaths worldwide. Due to the lack of obvious early symptoms and the lack of sensitive screening indicators in the early stage of HCC, the vast majority of patients are diagnosed with advanced or metastatic HCC, resulting in dissatisfactory treatment result. Therefore, it is urgent to determine effective and sensitive diagnostic and prognostic indicators and to determine new therapeutic targets. Circular RNA (circRNA) is a type of non-coding RNA that has been neglected for a long time. In recent years, it has been proved to play an important role in the development of many human diseases. Increasing evidence shows that change in circRNA expression has an extensive effect on the biological behavior of HCC. In this study, we comprehensively tracked the latest progress of circRNA in the pathogenesis of HCC, and reviewed its role as a biomarker for diagnosis and prognosis prediction in patients with HCC. In addition, we also summarized the potential of circRNA as therapeutic target in HCC and its relationship with HCC drug resistance, providing clues for the clinical development of circRNA-based therapeutic strategies.
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Affiliation(s)
- Dandan Xiong
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Rongquan He
- Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yiwu Dang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Huayu Wu
- Department of Cell Biology & Genetics, School of Preclinical Medicine, Guangxi Medical University, Nanning, China
| | - Zhenbo Feng
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Gang Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
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57
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Tang Y, Jiang M, Jiang HM, Ye ZJ, Huang YS, Li XS, Qin BY, Zhou RS, Pan HF, Zheng DY. The Roles of circRNAs in Liver Cancer Immunity. Front Oncol 2021; 10:598464. [PMID: 33614486 PMCID: PMC7890029 DOI: 10.3389/fonc.2020.598464] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 12/03/2020] [Indexed: 12/11/2022] Open
Abstract
Circular RNAs (circRNAs) are stable covalently closed non-coding RNAs (ncRNAs). Many studies indicate that circRNAs are involved in the pathological and physiological processes of liver cancer. However, the functions of circRNAs in liver cancer immunity are less known. In this review, we summarized the functions of circRNAs in liver cancer, including proliferative, metastasis and apoptosis, liver cancer stemness, cell cycle, immune evasion, glycolysis, angiogenesis, drug resistance/sensitizer, and senescence. Immune escape is considered to be one of the hallmarks of cancer development, and circRNA participates in the immune escape of liver cancer cells by regulating natural killer (NK) cell function. CircRNAs may provide new ideas for immunotherapy in liver cancer.
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Affiliation(s)
- Ying Tang
- Department of Oncology, Institute of Tumor, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Mei Jiang
- Department of Oncology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hai-Mei Jiang
- Department of Oncology, Institute of Tumor, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zeng Jie Ye
- Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yu-Sheng Huang
- Department of Oncology, Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiu-Shen Li
- Department of Oncology, Institute of Tumor, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Bin-Yu Qin
- Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Rui-Sheng Zhou
- Department of Oncology, Institute of Tumor, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hua-Feng Pan
- Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Da-Yong Zheng
- Department of Oncology, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Hepatopancreatobiliary, Cancer Center, Southern Medical University, Guangzhou, China.,Department of Hepatology, TCM-Integrated Hospital of Southern Medical University, Guangzhou, China
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Sang J, Li X, Lv L, Zhang C, Zhang X, Li G. Circ‑TOP2A acts as a ceRNA for miR‑346 and contributes to glioma progression via the modulation of sushi domain‑containing 2. Mol Med Rep 2021; 23:255. [PMID: 33537815 PMCID: PMC7893696 DOI: 10.3892/mmr.2021.11894] [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: 07/22/2020] [Accepted: 01/18/2021] [Indexed: 01/02/2023] Open
Abstract
Dysregulated circular RNAs (circRNAs) are involved in the carcinogenesis and progression of multiple human malignancies. Knowledge of circRNAs in glioma (GM) is limited and further study to uncover new therapeutic targets for GM is urgently required. The present study demonstrated that circ-TOP2A was elevated in GM tissue specimens and cells and that circ-TOP2A levels indicated an unfavorable clinical prognosis in GM. Functionally, circ-TOP2A knockdown reduced viability, migration and invasion and triggered apoptosis in LN229 cells. Ectopic expression of circ-TOP2A aggravated these malignant behaviors in U87MG cells. In terms of mechanism, RNA-seq was performed to discover the potential targets regulated by circ-TOP2A. Circ-TOP2A acted as a competing endogenous RNA to upregulate sushi domain-containing 2 (SUSD2) expression by sponging microRNA (miR) 346. Rescue assays revealed that the oncogenic function of circ-TOP2A was partially dependent on its regulation of the miR-346/SUSD2 axis. In conclusion, the present study identified that circ-TOP2A promoted GM proliferation and aggressiveness via miR-346/SUSD2 signaling, which is a potential prognostic biomarker and therapeutic target for GM.
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Affiliation(s)
- Junzhi Sang
- Department of Magnetic Resonance Imaging, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Xing Li
- Department of Ultrasonics, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Luting Lv
- Department of Neurology, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Chunyu Zhang
- Department of Magnetic Resonance Imaging, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Xiaoqian Zhang
- Department of Magnetic Resonance Imaging, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Guoan Li
- Department of Magnetic Resonance Imaging, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
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Li Y, Zu X, Hu X, Zhao C, Mo M, Fan B. Competing endogenous RNA network analysis reveals pivotal ceRNAs in bladder urothelial carcinoma. Transl Androl Urol 2021; 10:797-808. [PMID: 33718081 PMCID: PMC7947459 DOI: 10.21037/tau-20-1167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Background Bladder urothelial cancer (BUC) has become one of the most frequently occurring malignant tumors worldwide and it is of great importance to explore the molecular pathogenesis of bladder cancer. Emerging evidence has demonstrated that dysregulation of noncoding RNAs is critically involved in the tumorigenesis and progression of BUC. Long noncoding RNAs (lncRNAs) can act as microRNA (miRNA) sponges to regulate protein-coding gene expression and therefore form a competing endogenous RNA (ceRNA) network. ceRNA networks have been proven to play vital roles during tumorigenesis and progression. Elements involved in the ceRNA network have also been identified as potential therapeutic targets and prognostic biomarkers in various tumors. Understanding the regulatory mechanisms and functional roles of the ceRNA system will help understand tumorigenesis, progression mechanisms of BUC and develop therapeutics against cancer. Methods In this study, we utilized the TCGA database and analyzed the multilevel expression profile of BUC. ceRNA regulatory networks were constructed by integrating tumor progression and prognosis information. RNA immunoprecipitation (RIP) and qRT-PCR were applied to verify the identified ceRNA networks. KEGG enrichment analysis was implemented to infer the biological functions of the regulatory system. Results We identified a lncRNA-miRNA-mRNA regulatory ceRNA network containing two lncRNAs, one miRNA and 14 mRNAs. The ceRNA network we identified showed significant roles in BUC tumorigenesis, progression, and metastases. Conclusions The proposed ceRNA network may help explain the regulatory mechanism by which lncRNAs function as ceRNAs and improve our understanding of the pathogenesis of BUC. Moreover, the candidate elements involved in the ceRNA network can be further evaluated as potential therapeutic targets and prognostic biomarkers for BUC.
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Affiliation(s)
- Yangle Li
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiongbing Zu
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiheng Hu
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Cheng Zhao
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Miao Mo
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Benyi Fan
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
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Wang D, Hu X, Xiao L, Long G, Yao L, Wang Z, Zhou L. Prognostic Nutritional Index and Systemic Immune-Inflammation Index Predict the Prognosis of Patients with HCC. J Gastrointest Surg 2021; 25:421-427. [PMID: 32026332 PMCID: PMC7904713 DOI: 10.1007/s11605-019-04492-7] [Citation(s) in RCA: 103] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 11/23/2019] [Indexed: 01/31/2023]
Abstract
INTRODUCTION Systemic nutrition and inflammation are the critical factors in cancer initiation, evolution, and progression. This study aimed to evaluate the prognostic value of the prognostic nutritional index (PNI) and systemic immune-inflammation index (SII) in hepatocellular carcinoma (HCC) patients who underwent liver resection. METHODS A total of 202 HCC patients met the criteria and were included in the study. The receiver operating characteristic (ROC) curve was used to calculate the optimal PNI and SII cutoff values. The relationship between PNI/SII and clinicopathologic parameters was analyzed. The effect of PNI and SII on recurrence-free survival (RFS) and overall survival (OS) was investigated by Kaplan-Meier curves and Cox proportional hazards models. RESULTS The areas under the ROC curve for PNI and SII were 0.64 and 0.58. The ideal preoperative PNI and SII cutoff values were 50.25 and 461.5, respectively. Multivariate Cox regression analysis identified that the PNI (P = 0.001) and tumor diameter (P = 0.018) were significant prognostic markers for RFS, and that the PNI (P = 0.049), SII (P = 0.039) and tumor diameter (P = 0.001) were significant prognostic markers for OS. The median RFS in the PNI-low and PNI-high groups was 13.5 months and 23 months (P = 0.001), and that in the SII-low and SII-high groups was 18 months and 15 months (P = 0.03), respectively. The median OS in the PNI-low and PNI-high groups was 24 months and 39 months (P = 0.001), and that in the SII-low and SII-high groups was 36 months and 22 months (P = 0.002), respectively. CONCLUSION Interestingly, we found that PNI and SII could be important prognostic parameters for HCC patients who under hepatectomy.
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Affiliation(s)
- Dong Wang
- Department of General Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Xi Hu
- Department of General Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Liang Xiao
- Department of General Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Guo Long
- Department of General Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Lei Yao
- Department of General Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - ZhiMing Wang
- Department of General Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - LeDu Zhou
- Department of General Surgery, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.
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Wang L, Zhou L, Hou J, Meng J, Lin K, Wu X, Chen X. Three novel circRNAs upregulated in tissue and plasma from hepatocellular carcinoma patients and their regulatory network. Cancer Cell Int 2021; 21:72. [PMID: 33482819 PMCID: PMC7824949 DOI: 10.1186/s12935-021-01762-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/06/2021] [Indexed: 12/13/2022] Open
Abstract
Background The regulatory roles of circular RNAs (circRNAs) in tumorigenesis have attracted increasing attention. However, novel circRNAs with the potential to be used as serum/plasma biomarkers and their regulatory mechanism in the pathogenesis of hepatocellular carcinoma (HCC) remain explored. Methods CircRNA expression profiles of tumor tissues and plasma samples from HCC patients were compiled and jointly analyzed. CircRNA–miRNA–mRNA interactions were predicted by bioinformatics tools. The expression of interacting miRNAs and mRNA was verified in independent datasets. Survival analysis and pathway enrichment analysis were conducted on hub genes. Results We identified three significantly up-regulated circRNAs (hsa_circ_0009910, hsa_circ_0049783, and hsa_circ_0089172) both in HCC tissues and plasma samples. Two of them were validated to be indeed circular and could be excreted from hepatoma cells. We further revealed four miRNAs (hsa-miR-455-5p, hsa-miR-615-3p, hsa-miR-18a-3p, hsa-miR-4524a-3p) that targeting circRNAs and expressed in human HCC samples, and 95 mRNAs targeted by miRNAs and significantly up-regulated in two HCC cohorts. A protein-protein interaction network revealed 19 hub genes, 12 of them (MCM6, CCNB1, CDC20, NDC80, ZWINT, ASPM, CENPU, MCM3, MCM5, ECT2, CDC7, and DLGAP5) were associated with reduced survival in two HCC cohorts. KEGG, Reactome, and Wikipathway enrichment analysis indicated that the hub genes mainly functioned in DNA replication and cell cycle. Conclusions Our study uncovers three novel deregulated circRNAs in tumor and plasma from HCC patients and provides an insight into the pathogenesis from the circRNA–miRNA–mRNA regulatory network.
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Affiliation(s)
- Lianghai Wang
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases/the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China.
| | - Lisha Zhou
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases/the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Jun Hou
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases/the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Jin Meng
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases/the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Ke Lin
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases/the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China
| | - Xiangwei Wu
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases/the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China.
| | - Xueling Chen
- Key Laboratory of Xinjiang Endemic and Ethnic Diseases/the First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang, China.
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Gong J, Kong X, Qi J, Lu J, Yuan S, Wu M. CircRNA_104565 Promoted Cell Proliferation in Papillary Thyroid Carcinoma by Sponging miR-134. Int J Gen Med 2021; 14:179-185. [PMID: 33500653 PMCID: PMC7822225 DOI: 10.2147/ijgm.s288360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 12/11/2020] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Thyroid cancer is one of the most common cancers with rising incidence worldwide, and papillary thyroid carcinoma (PTC) accounts for 80-85% of thyroid malignancy. Although it has been reported that many genes relate to the carcinogenesis of PTC, the molecular mechanisms remain mostly unclear. METHODS QRT-PCR assay was performed to detect circRNA_104565, miR-134 and ELF2 expression. CCK8 assay was exercised to examine cell proliferation. Western blot was used to detect ELF2 expression. RESULTS We found that circRNA_104565 was highly expressed in PTC tissue and cell and promoted cell proliferation in vitro and in vivo. In addition, circRNA_104565 promoted cell proliferation in PTC by regulating the miR-134/ELF2 axis. CONCLUSION Hence, revealing the function of circRNA_104565 in PTC is important for understanding the molecular mechanism of carcinogenesis and providing new biomarkers or therapeutic targets for PTC.
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Affiliation(s)
- Jianming Gong
- Department of Surgery, Tinglin Hospital of Jinshan District, Shanghai201505, People’s Republic of China
| | - Xiangdong Kong
- Department of Surgery, Tinglin Hospital of Jinshan District, Shanghai201505, People’s Republic of China
| | - Jinhui Qi
- Department of Surgery, Tinglin Hospital of Jinshan District, Shanghai201505, People’s Republic of China
| | - Jiangkun Lu
- Department of Surgery, Tinglin Hospital of Jinshan District, Shanghai201505, People’s Republic of China
| | - Shaofeng Yuan
- Department of Surgery, Tinglin Hospital of Jinshan District, Shanghai201505, People’s Republic of China
| | - Ming Wu
- Department of Surgery, Tinglin Hospital of Jinshan District, Shanghai201505, People’s Republic of China
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Wang Q, Yu G, He H, Zheng Z, Li X, Lin R, Xu D. Differential expression of circular RNAs in bone marrow-derived exosomes from essential thrombocythemia patients. Cell Biol Int 2020; 45:869-881. [PMID: 33325145 DOI: 10.1002/cbin.11534] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 11/19/2020] [Accepted: 12/13/2020] [Indexed: 12/12/2022]
Abstract
Circular RNAs (circRNA) are closely associated with the pathogenesis of various hematological diseases. However, little is known about the potential functions of circRNAs in essential thrombocythemia (ET) development. The circRNA profile alterations in the bone marrow of ET patients were mainly investigated in this study. The sizes of exosomes derived from human bone marrow tissues were validated by the nanoparticle tracking analysis (NTA) method. CD63 and TSG101 expressions in exosomes were analyzed by western blot analysis. The profiles and differential expression of circRNAs in bone-derived exosomes were characterized by high-throughput sequencing. Herein, circular structures and expression of circRNAs were verified by Sanger sequencing and real-time polymerase chain reaction, respectively. The circRNA-miRNA-mRNA networks were predicted using the Cytoscape software. And we detected the effect of circ_0014614 on the transformation of K562 cells into megakaryocytes. Exosomes derived from the bone marrow of ET patients and healthy volunteers showed a diameter between 70 and 140 nm and expressed high CD63 and TSG101. Meanwhile, the circRNA profiles were significantly altered in bone marrow-derived exosomes from ET patients, among which circDAP3, circASXL1, and circRUNX1 were significantly downregulated in ET patients, thus conferring a new insight into the role of circRNAs in the pathogenesis of ET. Besides this, circRNA-encoding genes and miRNA-mRNA networks targeted by this three circRNA were involved in various biological processes and signaling pathways. And circ_0014614 could inhibit K562 cells' differentiation into megakaryocytes. The predictions of the potential function of these three differentially expressed circRNAs along with their interaction with specific miRNAs could provide a basis for circRNA-based ET diagnosis and treatment.
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Affiliation(s)
- Qiang Wang
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Guopan Yu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Han He
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhongxin Zheng
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xuan Li
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ren Lin
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Dan Xu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Bu N, Dong Z, Zhang L, Zhu W, Wei F, Zheng S. CircPVT1 Regulates Cell Proliferation, Apoptosis and Glycolysis in Hepatocellular Carcinoma via miR-377/TRIM23 Axis. Cancer Manag Res 2020; 12:12945-12956. [PMID: 33364841 PMCID: PMC7751302 DOI: 10.2147/cmar.s280478] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/20/2020] [Indexed: 12/14/2022] Open
Abstract
Background Recent studies reported that circular RNAs (circRNAs) exert essential functions in hepatocellular carcinoma (HCC) progression. However, the expression profile and function of circular RNA PVT1 (circPVT1) in HCC are not fully addressed. Thus, we aimed to probe into the function of circPVT1 in HCC development. Methods The levels of circPVT1, microRNA-377 (miR-377) and transcripts encoding tripartite motif containing 23 (TRIM23) were determined by qRT-PCR. The stability and localization of circPVT1 were examined by RNase R digestion assay and subcellular fraction assay, respectively. Cell proliferation and apoptosis were evaluated by MTT assay and flow cytometry analysis, respectively. The relationship between miR-377 and circPVT1 or TRIM23 was determined by dual-luciferase reporter assay and RNA immunoprecipitation (RIP). The protein expression of TRIM23 was measured by Western blot. The glycolysis level was assessed by specific kits and Seahorse Extracellular Flux Analyzer XF96. The function of circPVT1 in vivo was investigated in a murine xenograft model. Results CircPVT1 and TRIM23 levels were elevated, while miR-377 was decreased in HCC. CircPVT1 knockdown restrained proliferation and glycolysis, but enhanced apoptosis in HCC cells. CircPVT1 could bind to miR-377 and inhibition of miR-377 restored circPVT1 knockdown-mediated effect on HCC cells. TRIM23 was certified as a target of miR-377, and TRIM23 upregulation overturned the influence of miR-377 upregulation or circPVT1 silence on HCC progression. Moreover, circPVT1 knockdown restrained tumor growth in HCC in vivo. Conclusion CircPVT1 aggravated the progression of HCC by upregulating TRIM23 via sponging miR-377.
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Affiliation(s)
- Nan Bu
- Department of Gastroenterology, Chinese Medicine Hospital of Jiamusi City, Heilongjiang Province, Jiamusi, Heilongjiang, People's Republic of China
| | - Zheng Dong
- Department of General Surgery, Ningbo Mingzhou Hospital, Ningbo, Zhejinag, People's Republic of China
| | - Lingfeng Zhang
- Department of Hepatobiliary Surgery, The First People's Hospital of Huaihua City, Huaihua, Hunan, People's Republic of China
| | - Weibo Zhu
- Department of Medical Technology, Qujing Medical College, Qujing, Yunan, People's Republic of China
| | - Furong Wei
- Department of Gastroenterology, Central Hospital of Haining, Haining, Zhejinag, People's Republic of China
| | - Sheng Zheng
- Department of Gastroenterology, The Third People's Hospital of Yunnan Province, Kunming, Yunnan, People's Republic of China
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Tang X, Wen X, Li Z, Wen D, Lin L, Liu J, Li M. Hsa_circ_0102171 aggravates the progression of cervical cancer through targeting miR-4465/CREBRF axis. J Cell Physiol 2020; 236:4973-4984. [PMID: 33615474 DOI: 10.1002/jcp.30210] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 12/18/2022]
Abstract
Cervical cancer (CC) has caused numerous cancer-related deaths in women. Recent years, circular RNAs have been reported as vital factors in CC tumorigenesis. Our current study focused on the role of hsa_circ_0102171 (called circ_0102171 subsequently) in CC. At first, we applied reverse transcription polymerase chain reaction to detect the expression of circ_0102171 in CC tissues and cells. Subsequently, we silenced circ_0102171 to conduct loss-of-function assays, including cell counting kit-8 assay, 5-ethynyl-2'-deoxyuridine staining, Transwell assay, and flow cytometry analysis. Interestingly, we discovered that circ_0102171 expressed at a high level in CC tissues and cells. Functionally, silencing circ_0102171 prohibited cell proliferation, migration and invasion, and strengthened cell apoptosis in CC in vitro. Mechanistic investigations revealed that circ_0102171 could act as a sponge for miR-4465. Gain-of-function assays demonstrated that miR-4465 hindered the growth and migration of CC cells. Moreover, circ_0102171 enhanced the level of CREB3 regulatory factor (CREBRF) which was the downstream target of miR-4465. Rescue assays suggested that CREBRF and miR-4465 could involve in circ_0102171-mediated CC progression. Finally, in vivo data supported that silencing circ_0102171 hindered CC cell growth. In conclusion, circ_0102171 aggravates CC progression via targeting miR-4465/CREBRF axis.
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Affiliation(s)
- Xi Tang
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Xiaomin Wen
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Zhouyu Li
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Danxia Wen
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ling Lin
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jinquan Liu
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Mingyi Li
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
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66
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Li W, Liu JQ, Chen M, Xu J, Zhu D. Circular RNA in cancer development and immune regulation. J Cell Mol Med 2020; 26:1785-1798. [PMID: 33277969 PMCID: PMC8918416 DOI: 10.1111/jcmm.16102] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 10/14/2020] [Accepted: 11/01/2020] [Indexed: 12/22/2022] Open
Abstract
Circular RNAs (circRNAs) are a class of single‐stranded RNAs with closed loop structures formed by covalent bonds of head and tail. Exploration of circRNAs is continually increasing; however, their functional relevance largely remains to be elucidated. In general, they are stable, abundant, conserved and expressed in tissue‐specific manner. These distinct properties and their diverse cellular actions indicate that circRNAs modulate transcription and translation, and may even function as translation templates. Growing evidence reveals that circRNAs contribute to various physiological and pathological processes, including the initiation and progression of cancer. In this review, we present the current knowledge about circRNAs in cancer development, as well as their potential for use as biomarkers and even therapeutic targets. CircRNA’s role in immune regulation and antitumour immunotherapy is also discussed. In addition, possible challenges in antitumour therapy are raised, and current progress and future perspectives are provided.
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Affiliation(s)
- Weizhen Li
- Department of Laboratory Medicine, Sixth Affiliated Hospital of Yangzhou University, Taizhou, China.,Department of Laboratory Medicine, Affiliated Taixing Hospital of Bengbu Medical College, Taizhou, China
| | - Jia-Qiang Liu
- Department of Oral and Cranio-Maxillofacial, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ming Chen
- Department of Laboratory Medicine, Sixth Affiliated Hospital of Yangzhou University, Taizhou, China.,Department of Laboratory Medicine, Affiliated Taixing Hospital of Bengbu Medical College, Taizhou, China
| | - Jiang Xu
- Department of Rehabilitation, Huai'an Second People's Hospital, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, China
| | - Di Zhu
- School of Pharmacy and Shanghai Pudong Hospital, Fudan University, Shanghai, China
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67
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Jiang X, Chen D. Circular RNA hsa_circ_0000658 inhibits osteosarcoma cell proliferation and migration via the miR-1227/IRF2 axis. J Cell Mol Med 2020; 25:510-520. [PMID: 33264494 PMCID: PMC7810968 DOI: 10.1111/jcmm.16105] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 10/27/2020] [Accepted: 11/01/2020] [Indexed: 12/12/2022] Open
Abstract
Osteosarcoma (OS) is the most frequently occurring bone cancer. Circular RNAs (circRNAs) have been shown to exert pivotal impact in modulation of gene expression, but their roles in OS are still not fully understood. In this study, we analysed the role of circ‐0000658 in OS. Thereafter, molecular techniques such as Western blot, qRT‐PCR, RNA‐binding protein immunoprecipitation and Dual‐Luciferase reporter assays were implemented to investigate the role of circ‐0000658/miR‐1227/interferon regulatory factor‐2 (IRF2) axis in OS. Eventually, the impact of circ‐0000658 on tumour growth and metastasis was observed in a xenograft mouse model. The results of this study revealed that circ‐0000658 exhibits low levels in OS tissues and cell lines. Moreover, circ‐0000658 repression promoted cell cycle, proliferation, invasion and migration but inhibited the apoptosis of OS cells. Researches have previously shown that circ‐0000658 contains a binding site for miR‐1227 and thus can abundantly sponge miR‐1227 to up‐regulate the expression of its target gene IRF2. Moreover, both inhibition of miR‐1227 and overexpression of IRF2 reversed cell proliferation and invasion, which was triggered by circ‐0000658 repression. Conclusively, circ‐0000658 modulates biological function of OS cells through the miR‐1227/IRF2 axis. Therefore, circ‐0000658 might act as a possible novel therapeutic target for the treatment of OS.
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Affiliation(s)
- Xin Jiang
- Department of Orthopedics, China-Japan Friendship Hospital, Beijing, China
| | - Dong Chen
- Department of Orthopedics, China-Japan Friendship Hospital, Beijing, China
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68
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Su XY, Zhao Q, Ke JM, Wu DH, Zhu X, Lin J, Deng ZQ. Circ_0002232 Acts as a Potential Biomarker for AML and Reveals a Potential ceRNA Network of Circ_0002232/ miR-92a-3p/ PTEN. Cancer Manag Res 2020; 12:11871-11881. [PMID: 33239917 PMCID: PMC7682446 DOI: 10.2147/cmar.s278499] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 10/17/2020] [Indexed: 01/08/2023] Open
Abstract
Purpose Our research aimed to investigate the expression level of circ_0002232, which is transcribed from PTEN, and find out the association of circ_0002232/miR-92a-3p/PTEN network in acute myeloid leukemia (AML). Methods Circ_0002232 expression in 115 AML patients and 48 controls was detected by using real-time quantitative PCR. The diagnostic value of circ_0002232 expression was evaluated by receiver operating characteristic curve. Kaplan–Meier curves were used to analyse the impact of circ_0002232 for overall survival. Associated network of circ_0002232 was predicted by using interaction prediction websites. Results Compared with controls, circ_0002232 was notably low-expressed in AML (P<0.001). According to the result of receiver operating characteristic curve, circ_0002232 expression could distinguish AML patients from controls (P<0.001). There were significant differences in patients’ age (P=0.004), FAB classifications (P=0.036), white blood cell count (P=0.041) and platelet count (P=0.021) between low-expressed circ_0002232 group and high-expressed circ_0002232 group. Moreover, there was a positive correlation between circ_0002232 expression and patients’ age (Pearson r=0.256, P=0.0057). Interestingly, we found that patients in low-expressed circ_0002232 group had better overall survival both in whole AML (P=0.030) and non-APL AML (P=0.014). Remarkably, the expression of circ_0002232 was positively correlated with PTEN (Spearman r=0.678, P<0.001). Furthermore, there was a negative correlation in AML between circ_0002232 and miR-92a-3p (Spearman r=−0.301, P=0.016), miR-92a-3p and PTEN (Spearman r=−0.324, P=0.034). Interaction prediction websites revealed that circ_0002232 might affect the expression of PTEN and the process of AML through sponging miR-92a-3p. Conclusion Circ_0002232, one of the circRNAs transcribed from PTEN, was remarkably down-regulated in AML and could act as a promising biomarker for the diagnosis of AML. In addition, there might be a potential association network of circ_0002232/miR-92a-3p/PTEN in AML.
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Affiliation(s)
- Xiao-Yu Su
- Laboratory Center, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, People's Republic of China
| | - Qian Zhao
- Laboratory Center, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, People's Republic of China
| | - Jin-Ming Ke
- Faculty of Forestry, Zhejiang A&F University, Hangzhou, Zhejiang, People's Republic of China
| | - De-Hong Wu
- Laboratory Center, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, People's Republic of China
| | - Xin Zhu
- Laboratory Center, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, People's Republic of China
| | - Jiang Lin
- Laboratory Center, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, People's Republic of China
| | - Zhao-Qun Deng
- Laboratory Center, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, People's Republic of China
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Xu J, Wan Z, Tang M, Lin Z, Jiang S, Ji L, Gorshkov K, Mao Q, Xia S, Cen D, Zheng J, Liang X, Cai X. N 6-methyladenosine-modified CircRNA-SORE sustains sorafenib resistance in hepatocellular carcinoma by regulating β-catenin signaling. Mol Cancer 2020; 19:163. [PMID: 33222692 PMCID: PMC7681956 DOI: 10.1186/s12943-020-01281-8] [Citation(s) in RCA: 177] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 11/12/2020] [Indexed: 12/22/2022] Open
Abstract
Background and aims Accumulating evidence suggests that the primary and acquired resistance of hepatocellular carcinoma (HCC) to sorafenib is mediated by multiple molecular, cellular, and microenvironmental mechanisms. Understanding these mechanisms will enhance the likelihood of effective sorafenib therapy. Methods In vitro and in vivo experiments were performed and clinical samples and online databases were acquired for clinical investigation. Results In this study, we found that a circular RNA, circRNA-SORE, which is up-regulated in sorafenib-resistant HCC cells, was necessary for the maintenance of sorafenib resistance, and that silencing circRNA-SORE substantially increased the efficacy of sorafenib-induced apoptosis. Mechanistic studies determined that circRNA-SORE sequestered miR-103a-2-5p and miR-660-3p by acting as a microRNA sponge, thereby competitively activating the Wnt/β-catenin pathway and inducing sorafenib resistance. The increased level of circRNA-SORE in sorafenib-resistant cells resulted from increased RNA stability. This was caused by an increased level of N6-methyladenosine (m6A) at a specific adenosine in circRNA-SORE. In vivo delivery of circRNA-SORE interfering RNA by local short hairpin RNA lentivirus injection substantially enhanced sorafenib efficacy in animal models. Conclusions This work indicates a novel mechanism for maintaining sorafenib resistance and is a proof-of-concept study for targeting circRNA-SORE in sorafenib-treated HCC patients as a novel pharmaceutical intervention for advanced HCC. Supplementary Information The online version contains supplementary material available at 10.1186/s12943-020-01281-8.
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Affiliation(s)
- Junjie Xu
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China.,Key Laboratory of Laparoscopic Technology of Zhejiang Province, Hangzhou, China.,Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou, China.,Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou, China.,Zhejiang University Cancer Center, Hangzhou, China
| | - Zhe Wan
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China.,Key Laboratory of Laparoscopic Technology of Zhejiang Province, Hangzhou, China.,Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou, China.,Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou, China.,Zhejiang University Cancer Center, Hangzhou, China
| | - Minyue Tang
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China
| | - Zhongjie Lin
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China.,Key Laboratory of Laparoscopic Technology of Zhejiang Province, Hangzhou, China.,Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou, China.,Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou, China.,Zhejiang University Cancer Center, Hangzhou, China
| | - Shi Jiang
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China.,Key Laboratory of Laparoscopic Technology of Zhejiang Province, Hangzhou, China.,Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou, China.,Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou, China.,Zhejiang University Cancer Center, Hangzhou, China
| | - Lin Ji
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China.,Key Laboratory of Laparoscopic Technology of Zhejiang Province, Hangzhou, China.,Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou, China.,Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou, China.,Zhejiang University Cancer Center, Hangzhou, China
| | - Kirill Gorshkov
- National Center for Advancing Translational Sciences, National Institutes of Health, 9800 Medical Center Drive, Bethesda, MD, 20892, USA
| | - Qijiang Mao
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China.,Key Laboratory of Laparoscopic Technology of Zhejiang Province, Hangzhou, China.,Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou, China.,Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou, China.,Zhejiang University Cancer Center, Hangzhou, China
| | - Shunjie Xia
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China.,Key Laboratory of Laparoscopic Technology of Zhejiang Province, Hangzhou, China.,Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou, China.,Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou, China.,Zhejiang University Cancer Center, Hangzhou, China
| | - Dong Cen
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China.,Key Laboratory of Laparoscopic Technology of Zhejiang Province, Hangzhou, China.,Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou, China.,Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou, China.,Zhejiang University Cancer Center, Hangzhou, China
| | - Junhao Zheng
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China.,Key Laboratory of Laparoscopic Technology of Zhejiang Province, Hangzhou, China.,Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou, China.,Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou, China.,Zhejiang University Cancer Center, Hangzhou, China
| | - Xiao Liang
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China. .,Key Laboratory of Laparoscopic Technology of Zhejiang Province, Hangzhou, China. .,Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou, China. .,Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou, China. .,Zhejiang University Cancer Center, Hangzhou, China.
| | - Xiujun Cai
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China. .,Key Laboratory of Laparoscopic Technology of Zhejiang Province, Hangzhou, China. .,Zhejiang Minimal Invasive Diagnosis and Treatment Technology Research Center of Severe Hepatobiliary Disease, Hangzhou, China. .,Zhejiang Research and Development Engineering Laboratory of Minimally Invasive Technology and Equipment, Hangzhou, China. .,Zhejiang University Cancer Center, Hangzhou, China.
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Shao T, Pan YH, Xiong XD. Circular RNA: an important player with multiple facets to regulate its parental gene expression. MOLECULAR THERAPY-NUCLEIC ACIDS 2020; 23:369-376. [PMID: 33425494 PMCID: PMC7779830 DOI: 10.1016/j.omtn.2020.11.008] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Circular RNAs (circRNAs), a novel type of endogenous RNAs with covalently closed-loop structures, have become a new research hotspot in the RNA world. Their diversity, stability, evolutionary conservation, and cell type- or tissue-specific expression patterns endow circRNAs with various important biological functions. As a consequence, circRNAs are emerging as important regulators of physiological development and disease pathogenesis. Growing evidence has shown that circRNAs can regulate parental gene expression through diverse mechanisms, such as transcription and splicing regulation, microRNA (miRNA) sponges, mRNA traps, translational modulation, and post-translational modification. The study of circRNAs and how circRNAs regulate the expression of parental genes will facilitate a deeper understanding of their biological functions and provide new perspectives on their clinical application. Herein, we review the biogenesis of circRNAs, with a particular focus on the molecular mechanisms of circRNAs regulating their parental gene expression and the biological significance of such regulation.
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Affiliation(s)
- Tong Shao
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan 523808, P.R. China.,Institute of Biochemistry & Molecular Biology, Guangdong Medical University, Zhanjiang 524023, P.R. China
| | - Yan-Hong Pan
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan 523808, P.R. China.,Institute of Biochemistry & Molecular Biology, Guangdong Medical University, Zhanjiang 524023, P.R. China
| | - Xing-Dong Xiong
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan 523808, P.R. China.,Institute of Biochemistry & Molecular Biology, Guangdong Medical University, Zhanjiang 524023, P.R. China
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Xu G, Xu WY, Xiao Y, Jin B, Du SD, Mao YL, Zhang ZT. The emerging roles of non-coding competing endogenous RNA in hepatocellular carcinoma. Cancer Cell Int 2020; 20:496. [PMID: 33061848 PMCID: PMC7552539 DOI: 10.1186/s12935-020-01581-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 09/28/2020] [Indexed: 01/17/2023] Open
Abstract
Accumulating evidence has emerged revealing that noncoding RNAs (ncRNAs) play essential roles in the occurrence and development of hepatocellular carcinoma (HCC). However, the complicated regulatory interactions among various ncRNAs in the development of HCC are not entirely understood. The newly discovered mechanism of competing endogenous RNAs (ceRNAs) uncovered regulatory interactions among different varieties of RNAs. In recent years, a growing number of studies have suggested that ncRNAs, including long ncRNAs, circular RNAs and pseudogenes, play major roles in the biological functions of the ceRNA network in HCC. These ncRNAs can share microRNA response elements to affect microRNA affinity with target RNAs, thus regulating gene expression at the transcriptional level and both physiological and pathological processes. The ncRNAs that function as ceRNAs are involved in diverse biological processes in HCC cells, such as tumor cell proliferation, epithelial-mesenchymal transition, invasion, metastasis and chemoresistance. Based on these findings, ncRNAs that act as ceRNAs may be promising candidates for clinical diagnosis and treatments. In this review, we discuss the mechanisms and research methods of ceRNA networks. We also reviewed the recent advances in studying the roles of ncRNAs as ceRNAs in HCC and highlight possible directions and possibilities of ceRNAs as diagnostic biomarkers or therapeutic targets. Finally, the limitations, gaps in knowledge and opportunities for future research are also discussed.
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Affiliation(s)
- Gang Xu
- Department of Liver Surgery, Peking Union Medical College (PUMC) Hospital and Chinese Academy of Medical Sciences, 1# Shuaifuyuan, Wangfujing, Dong-Cheng District, Beijing, 100730 China
| | - Wei-Yu Xu
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, No. 95 Yong-An Road, Xi-Cheng District, Beijing, 100050 People's Republic of China
| | - Yao Xiao
- Department of Liver Surgery, Peking Union Medical College (PUMC) Hospital and Chinese Academy of Medical Sciences, 1# Shuaifuyuan, Wangfujing, Dong-Cheng District, Beijing, 100730 China
| | - Bao Jin
- Department of Liver Surgery, Peking Union Medical College (PUMC) Hospital and Chinese Academy of Medical Sciences, 1# Shuaifuyuan, Wangfujing, Dong-Cheng District, Beijing, 100730 China
| | - Shun-Da Du
- Department of Liver Surgery, Peking Union Medical College (PUMC) Hospital and Chinese Academy of Medical Sciences, 1# Shuaifuyuan, Wangfujing, Dong-Cheng District, Beijing, 100730 China
| | - Yi-Lei Mao
- Department of Liver Surgery, Peking Union Medical College (PUMC) Hospital and Chinese Academy of Medical Sciences, 1# Shuaifuyuan, Wangfujing, Dong-Cheng District, Beijing, 100730 China
| | - Zhong-Tao Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, No. 95 Yong-An Road, Xi-Cheng District, Beijing, 100050 People's Republic of China
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Liang Y, Shi J, He Q, Sun G, Gao L, Ye J, Tang X, Qu H. Hsa_circ_0026416 promotes proliferation and migration in colorectal cancer via miR-346/NFIB axis. Cancer Cell Int 2020; 20:494. [PMID: 33061846 PMCID: PMC7549246 DOI: 10.1186/s12935-020-01593-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 10/06/2020] [Indexed: 02/07/2023] Open
Abstract
Background Colorectal cancer (CRC) is one of the most common cancers worldwide. Circular RNAs (circRNAs), a novel class of non-coding RNAs, have been confirmed to be key regulators of many diseases. With many scholars devoted to studying the biological function and mechanism of circRNAs, their mysterious veil is gradually being revealed. In our research, we explored a new circRNA, hsa_circ_0026416, which was identified as upregulated in CRC with the largest fold change (logFC = 3.70) of the evaluated circRNAs via analysing expression profiling data by high throughput sequencing of members of the GEO dataset (GSE77661) to explore the molecular mechanisms of CRC. Methods qRT-PCR and western blot analysis were utilized to assess the expression of hsa_circ_0026416, miR-346 and Nuclear Factor I/B (NFIB). CCK-8 and transwell assays were utilized to examine cell proliferation, migration and invasion in vitro, respectively. A luciferase reporter assay was used to verify the combination of hsa_circ_0026416, miR-346 and NFIB. A nude mouse xenograft model was also utilized to determine the role of hsa_circ_0026416 in CRC cell growth in vivo. Results Hsa_circ_0026416 was markedly upregulated in CRC patient tissues and plasma and was a poor prognosis in CRC patients. In addition, the area under the curve (AUC) of hsa_circ_0026416 (0.767) was greater than the AUC of CEA (0.670), CA19-9 (0.592) and CA72-4 (0.575). Functionally, hsa_circ_0026416 promotes cell proliferation, migration and invasion both in vitro and in vivo. Mechanistically, hsa_circ_0026416 may function as a ceRNA via competitively absorbing miR-346 to upregulate the expression of NFIB. Conclusions In summary, our findings demonstrate that hsa_circ_0026416 is an oncogene in CRC. Hsa_circ_0026416 promotes the progression of CRC via the miR-346/NFIB axis and may represent a potential biomarker for diagnosis and therapy in CRC.
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Affiliation(s)
- Yahang Liang
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107, West of Wenhua Street, Lixia District, Jinan, 250012 China
| | - Jingbo Shi
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107, West of Wenhua Street, Lixia District, Jinan, 250012 China
| | - Qingsi He
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107, West of Wenhua Street, Lixia District, Jinan, 250012 China
| | - Guorui Sun
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107, West of Wenhua Street, Lixia District, Jinan, 250012 China
| | - Lei Gao
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107, West of Wenhua Street, Lixia District, Jinan, 250012 China
| | - Jianhong Ye
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107, West of Wenhua Street, Lixia District, Jinan, 250012 China
| | - Xiaolong Tang
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107, West of Wenhua Street, Lixia District, Jinan, 250012 China
| | - Hui Qu
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, No. 107, West of Wenhua Street, Lixia District, Jinan, 250012 China
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Jin Y, Zhang S, Liu L. Circular RNA circ_C16orf62 Suppresses Cell Growth in Gastric Cancer by miR-421/Tubulin beta-2A Chain (TUBB2A) Axis. Med Sci Monit 2020; 26:e924343. [PMID: 33006960 PMCID: PMC7537480 DOI: 10.12659/msm.924343] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Background Gastric cancer (GC) is the third leading cause of cancer-associated mortality in the world. Expression of circular RNA circ_C16orf62 is reported to be low in GC. The role and mechanism of circ_C16orf62 remain unclear. Material/Methods Expression levels of circ_C16orf62 and tubulin beta-2A chain (TUBB2A) in GC tissues and cells, and microRNA-421 (miR-421) level in GC cells were detected by real-time quantitative polymerase chain reaction (RT-qPCR). The predominant cytoplasmic localization of circ_C16orf62 was identified by subcellular fractionation. The protein level of TUBB2A was detected by western blot assay. Cell proliferative ability, migration, and invasion were measured by 3-(4, 5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2-H-tetrazolium bromide (MTT), colony formation, and several transwell assaysy. The binding relationship between miR-421 and circ_C16orf62 or TUBB2A was predicted by starBase3.0 or Targetscan, and then verified by the dual-luciferase reporter assay. The biological role ofcirc_C16orf62 was examined by xenograft tumor model in vivo. Results Circ_C16orf62 andTUBB2A were downregulated in GC tissues and cells. Circ_C16orf62 was predominantly located in the cytoplasm of GC cells, and repressed proliferation, migration, and invasion of GC cells. Mechanistically, circ_C16orf62 worked as the miR-421 sponge to upregulate TUBB2A in GC, thereby hindering GC growth. Circ_C16orf62 repressed GC tumor growth in vivo. Conclusions These findings demonstrate that circ_C16orf62 impeded proliferation, migration, and invasion in vitro and retarded tumor growth in vivo by the miR-421/TUBB2A axis in GC, providing a potential therapeutic strategy for patients with GC.
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Affiliation(s)
- Yanfeng Jin
- Department of Gastroenterology, Yantai Yuhuangding Hospital, Yantai, Shandong, China (mainland)
| | - Shanshan Zhang
- Department of Gastroenterology, Yantai Yuhuangding Hospital, Yantai, Shandong, China (mainland)
| | - Li Liu
- Department of Oncology, The Second Hospital of Weifang, Weifang, Shandong, China (mainland)
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Li Y, Zhou S, Peng P, Wang X, Du L, Huo Z, Xu B. Emerging role of circular RNA in intervertebral disc degeneration: Knowns and unknowns (Review). Mol Med Rep 2020; 22:3057-3065. [PMID: 32945490 PMCID: PMC7453660 DOI: 10.3892/mmr.2020.11437] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 06/04/2020] [Indexed: 12/13/2022] Open
Abstract
Lower back pain (LBP) is one of the predominant factors contributing to dyskinesia and remains a serious social and economic burden worldwide. Intervertebral disc degeneration (IDD) is the leading cause of LBP; the existing IDD treatments cannot completely prevent IDD. Circular RNAs (circRNAs) are non‑coding RNAs resulting from back‑splicing with unique structural characteristics and functions. Accumulating evidence suggests that circRNAs are involved in the pathological process of IDD and modulate a range of IDD‑related genes or proteins. However, the underlying circRNA‑mediated regulatory mechanisms remain poorly understood. The aim of the present review is to describe the current understanding of circRNA characteristics, classification, biogenesis and function in relation to its specific roles in IDD. Additionally, the limitations on the current knowledge in the field and the future direction of IDD‑related research are also discussed.
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Affiliation(s)
- Yongjin Li
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin 300211, P.R. China
| | - Suzhe Zhou
- Department of General Practice, Xiamen Branch, Zhongshan Hospital, Fudan University, Xiamen, Fujian 361015, P.R. China
| | - Peng Peng
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Xuke Wang
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin 300211, P.R. China
- Department of Minimally Invasive Spine Surgery, Luoyang Orthopedic-Traumatological Hospital, Luoyang, Henan 471002, P.R. China
| | - Lilong Du
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin 300211, P.R. China
| | - Zhenxin Huo
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin 300211, P.R. China
| | - Baoshan Xu
- Department of Minimally Invasive Spine Surgery, Tianjin Hospital, Tianjin 300211, P.R. China
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Zhu J, Li J, Wei Y, Wang J, Zhang XY. Roles of circular RNAs in the progression of hepatocellular carcinoma and their values as diagnostic and prognostic biomarkers. Gene 2020; 767:145175. [PMID: 33002570 DOI: 10.1016/j.gene.2020.145175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/23/2020] [Accepted: 09/23/2020] [Indexed: 02/07/2023]
Affiliation(s)
- Jing Zhu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, The Sparkfire Scientific Research Group of Nanjing Medical University, Nanjing 210029, China
| | - Jingtao Li
- Department of Liver Diseases, The Hospital Affiliated to Shaanxi University of Chinese Medicine, Xianyang 712000, Shaanxi, China
| | - Yi Wei
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, The Sparkfire Scientific Research Group of Nanjing Medical University, Nanjing 210029, China
| | - Jianchu Wang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, No. 18 Zhongshan Road, Baise 533000, Guangxi Zhuang Autonomous Region, China
| | - Xiao-Yu Zhang
- Division of Gastrointestinal Surgery, Huai'an Second People's Hospital and The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an 223002, 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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Abstract
Circular RNAs (circRNAs) are covalently circularized RNA moieties that despite being relatively abundant were only recently identified and have only begun to be investigated within the last couple of years. Even though there are many thousands of genes that appear capable of producing circRNAs, and the fact that many circRNAs appear to be highly evolutionarily conserved, the function of all but a few remain to be fully explored. What has been determined, however, is that circRNAs play key regulatory roles in many aspects of biology with focus being given to their function in cancer. Most of the studies to date have found that circRNAs act as master regulator of gene expression most often than not acting to regulate levels though sequestration or "sponging" of other gene expression regulators, particularly miRNAs. They can also function directly modulating transcription, or by interfering with splicing mechanisms. Some circRNAs can also be translated into functional proteins or peptides. A combination of tissue and developmental stage specific expression along with an innate resistance to RNAse activity means that circRNAs show perhaps their greatest potential as novel biomarkers of cancer. In this chapter we consider the current state of knowledge regarding these molecules, their synthesis, function, and association with cancer. We also consider some of the challenges that remain to be overcome to allow this emerging class of RNAs to fulfill their potential in clinical practice.
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Affiliation(s)
- Carla Solé
- Molecular Oncology Group, Biodonostia Research Institute, San Sebastián, Spain
| | - Charles Henderson Lawrie
- Molecular Oncology Group, Biodonostia Research Institute, San Sebastián, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain; Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom.
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Han TS, Hur K, Cho HS, Ban HS. Epigenetic Associations between lncRNA/circRNA and miRNA in Hepatocellular Carcinoma. Cancers (Basel) 2020; 12:cancers12092622. [PMID: 32937886 PMCID: PMC7565033 DOI: 10.3390/cancers12092622] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/10/2020] [Accepted: 09/13/2020] [Indexed: 02/06/2023] Open
Abstract
Simple Summary Non-coding RNAs such as microRNAs, long non-coding RNAs, and circular RNAs contribute to the development and progression of hepatocellular carcinoma through epigenetic association. Long non-coding RNAs and circular RNAs act as competing endogenous RNAs that contain binding sites for miRNAs and thus compete with the miRNAs, which results in promotion of miRNA target gene expression, thereby leading to proliferation and metastasis of hepatocellular carcinoma. Competing endogenous RNAs have the potential to become diagnostic biomarkers and therapeutic targets for treatment of hepatocellular carcinoma. Abstract The three major members of non-coding RNAs (ncRNAs), named microRNAs (miRNAs), long non-coding RNAs (lncRNAs), and circular RNAs (circRNAs), play an important role in hepatocellular carcinoma (HCC) development. Recently, the competing endogenous RNA (ceRNA) regulation model described lncRNA/circRNA as a sponge for miRNAs to indirectly regulate miRNA downstream target genes. Accumulating evidence has indicated that ceRNA regulatory networks are associated with biological processes in HCC, including cancer cell growth, epithelial to mesenchymal transition (EMT), metastasis, and chemoresistance. In this review, we summarize recent discoveries, which are specific ceRNA regulatory networks (lncRNA/circRNA-miRNA-mRNA) in HCC and discuss their clinical significance.
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Affiliation(s)
- Tae-Su Han
- Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea;
| | - Keun Hur
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Daegu 41944, Korea;
| | - Hyun-Soo Cho
- Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea;
- Correspondence: (H.-S.C.); (H.S.B.)
| | - Hyun Seung Ban
- Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea;
- Correspondence: (H.-S.C.); (H.S.B.)
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Gao J, Li E, Liu W, Yang Q, Xie C, Ai J, Zhou F, Liao W, Wu L. Circular RNA MYLK Promotes Hepatocellular Carcinoma Progression Through the miR29a/KMT5C Signaling Pathway. Onco Targets Ther 2020; 13:8615-8627. [PMID: 32904604 PMCID: PMC7457592 DOI: 10.2147/ott.s258715] [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: 04/18/2020] [Accepted: 08/04/2020] [Indexed: 12/24/2022] Open
Abstract
Purpose This study aimed to investigate the functions of the circular RNA circMYLK (hsa_circ_0002768) in the development of hepatocellular carcinoma (HCC) and to identify the underlying mechanisms of the circMYLK/miR29a/KMT5C axis. Materials and Methods Quantitative real-time polymerase chain reaction (qRT-PCR) was utilized to explore the expressions of circMYLK, miR-29a and KMT5C in HCC tissues and cells. A potential miRNA (miR-29a) regulated by circMYLK was also explored, and the target relationship between miR-29a and KMT5C was confirmed. FISH, qRT-PCR, Western blotting, and dual-luciferase reporter assays were used to examine the circMYLK/miR29a/KMT5C signaling pathways involved in HCC development. Additionally, HCC cells were implanted into nude mice subcutaneously to test the role of circMYLK in tumor growth. Results circMYLK was determined to be significantly upregulated in HCC tissues and cells. Suppression of circMYLK repressed HCC cell proliferation, migration, and invasion while increasing apoptosis. In addition, FISH, qRT-PCR, and Western blotting, as well as dual-luciferase reporter assays, revealed that circMYLK could bind to miR-29a. In rescue experiments, miR-29a had the potential to eliminate the inhibitory effect of circMYLK knockdown in HCC. Moreover, miR-29a was found to target the KMT5C gene, which was positively regulated by circMYLK. Finally, a nude mouse tumorigenicity assay showed that injection of circMYLK siRNA into nude mice drastically suppressed xenograft tumor formation in vivo. Conclusion Our current study demonstrated that circMYLK promotes HCC progression by acting as a competing endogenous RNA of miR-29a, which regulates the downstream oncogene KMT5C.
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Affiliation(s)
- Jun Gao
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Enliang Li
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Weiwei Liu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Qingping Yang
- Department of Assisted Reproductive, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Chunyan Xie
- Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, People's Republic of China
| | - Jiyuan Ai
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Fan Zhou
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Wenjun Liao
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Linquan Wu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
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Zhang S, Zhang X, Chen G, Zheng X, Zhu X, Shan L. Hsa_circ_0007494 suppresses prostate cancer progression via miR-616/PTEN axis. Exp Cell Res 2020; 395:112233. [PMID: 32810511 DOI: 10.1016/j.yexcr.2020.112233] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/28/2020] [Accepted: 08/09/2020] [Indexed: 11/18/2022]
Abstract
Circular RNAs (circRNAs) are important players in prostate cancer (PCa) development and progression, but their detailed mechanisms have not been elucidated. Herein, hsa_circ_0007494 was suppressed in the PCa cell lines and tissues. This resulted in metastasis of tumors to the lymph node and predicted tumor stage. Functionally, overexpression of hsa_circ_0007494 inhibited the proliferation and invasive capacity of the cells in vitro and blocked the growth of tumors in vivo. Hsa_circ_0007494 functioned as a "molecular sponge" for miR-616 and hence upregulated the target of miR-616, PTEN. In addition, rescue assays revealed that PTEN silencing (or miR-616 mimics) blocked the tumor-suppressing effects of hsa_circ_0007494 overexpression on PCa progression. Together, our findings indicate that hsa_circ_0007494 suppresses PCa by forming a negative regulatory network including hsa_circ_0007494/miR-616/PTEN. Thus, hsa_circ_0007494 may be a treatment target for PCa.
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Affiliation(s)
- Shilong Zhang
- Department of Urology Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, Henan Province, China
| | - Xiangsheng Zhang
- Department of Urology Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, Henan Province, China
| | - Guoxiao Chen
- Department of Urology Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, Henan Province, China
| | - Xiaokang Zheng
- Department of Urology Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, Henan Province, China
| | - Xiaobo Zhu
- Department of Urology Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, Henan Province, China
| | - Lei Shan
- Department of Urology Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, Henan Province, China.
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Circular RNA circ_0026359 Enhances Cisplatin Resistance in Gastric Cancer via Targeting miR-1200/POLD4 Pathway. BIOMED RESEARCH INTERNATIONAL 2020; 2020:5103272. [PMID: 32855967 PMCID: PMC7443216 DOI: 10.1155/2020/5103272] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 06/18/2020] [Accepted: 06/25/2020] [Indexed: 12/13/2022]
Abstract
Human gastric cancer is one of the most common malignant tumors with a poor prognosis. Cisplatin (CDDP) is a well-known first-line chemotherapeutic drug. Acquired resistance retards the clinical application of CDDP in gastric cancer. In this study, circular RNA circ_0026359 was demonstrated to be overexpressed in gastric cancer tissues/cells compared with normal gastric tissues/cells and was overexpressed in CDDP-resistant gastric cancer tissues/cells compared with CDDP-sensitive gastric cancer tissues/cells. High levels of circ_0026359 were associated with low overall survival (OS) and relapse-free survival (RFS) rates in gastric cancer patients. circ_0026359 was examined to promote CDDP resistance in gastric cancer cells. circ_0026359 directly interacted and negatively regulated miR-1200. POLD4 was a direct target of miR-1200. miR-1200/POLD4 pathway mediated the promoting role of circ_0026359 in CDDP resistance of gastric cancer. circ_0026359 could be used as a potential target for CDDP-resistant gastric cancer therapy.
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The circEPSTI1/mir-942-5p/LTBP2 axis regulates the progression of OSCC in the background of OSF via EMT and the PI3K/Akt/mTOR pathway. Cell Death Dis 2020; 11:682. [PMID: 32826876 PMCID: PMC7443145 DOI: 10.1038/s41419-020-02851-w] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 07/30/2020] [Indexed: 11/08/2022]
Abstract
Oral squamous cell carcinoma (OSCC) in the background of oral submucous fibrosis (OSF) caused by areca nut chewing has a high incidence in Asia-Pacific countries. However, the molecular mechanism remains unclear. Here, we performed circRNA microarray analysis to screen the circRNA expression profiles in OSCC and OSF. We identified circEPSTI1 as a circRNA with consistent, sequential upregulation from normal buccal mucosa (NBM) to OSF to OSCC. Functionally, circEPSTI1 significantly promoted OSCC cell proliferation and invasion, as evidenced by the CCK8, colony formation, wound healing, and transwell assays with circEPSTI1 overexpression and silencing. OSCC patients with circEPSTI1high status exhibited poor prognoses. CircEPSTI1 sponged miR-942-5p and accelerated epithelial-mesenchymal transition (EMT) to increase LTBP2 expression in OSCC through phosphorylation of PI3K/Akt/mTOR signaling pathway components. Blocking the PI3K/Akt/mTOR signaling pathway with the dual PI3k/mTOR inhibitor BEZ235 reversed OSCC progression induced by overexpression of circEPSTI1 and LTBP2. Collectively, these results indicate that the circEPSTI1/miR-942-5p/LTBP2 axis affects OSCC cell proliferation and invasion via the acceleration of EMT and the phosphorylation of PI3K/Akt/mTOR signaling pathway components. CircEPSTI1 may be an independent diagnostic and prognostic marker and a potential therapeutic target for OSCC patients with OSF.
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Lin C, Xu X, Yang Q, Liang L, Qiao S. Circular RNA ITCH suppresses proliferation, invasion, and glycolysis of ovarian cancer cells by up-regulating CDH1 via sponging miR-106a. Cancer Cell Int 2020; 20:336. [PMID: 32714095 PMCID: PMC7376874 DOI: 10.1186/s12935-020-01420-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/13/2020] [Indexed: 02/07/2023] Open
Abstract
Background Accumulating data suggested that circular RNAs (circRNAs) played important roles in the development of human cancer. However, the potential mechanism of circRNAs in ovarian cancer remains unclear. Methods Quantitative real-time polymerase chain reaction (qRT-PCR) was used to measure the levels of circRNA itchy E3 ubiquitin protein ligase (circ-ITCH), microRNA-106a (miR-106a) and E-cadherin (CDH1). Cell Counting Kit-8 (CCK-8) and Transwell assay were carried out to measure cell proliferation and invasion. Glucose consumption, lactate production, and ATP level were assessed by the glucose, lactate, and ATP assay kits, respectively. Cell apoptosis was detected by Flow cytometry. The binding sites were predicted by StarBase v.2.0 or microT-CDS and verified by dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assays. CDH1 protein level was determined by western blot. The functional role of circ-ITCH was measured by xenograft tumor model in vivo. Results Circ-ITCH was down-regulated in ovarian cancer and positively correlated with 5-year overall survival of patients with ovarian cancer. RNase R digestion assay confirmed that circ-ITCH was more stable than its linear mRNA form. Moreover, circ-ITCH was mainly distributed in the cytoplasm of ovarian cancer cells.Functionally, circ-ITCH overexpression hindered proliferation, invasion, glycolysis and promoted apoptosis of ovarian cancer cells. Besides, circ-ITCH overexpression inhibited ovarian cancer cell progression by targeting miR-106a. Additionally, CDH1 was a target of miR-106a, and the protein level of CDH1 was negatively regulated by miR-106a. Similarly, CDH1 knockdown recovered the inhibition effects of miR-106a inhibitor or circ-ITCH overexpression on the progression of ovarian cancer cells. Importantly, circ-ITCH up-regulated the protein level of CDH1 by sponging miR-106a in ovarian cancer cells. Circ-ITCH overexpression suppressed the growth of ovarian cancer cells in vivo. Conclusion Circ-ITCH suppressed proliferation, invasion, glycolysis, and promoted apoptosis of ovarian cancer cells by modulating the miR-106a/CDH1 axis.
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Affiliation(s)
- Chunli Lin
- Department of Oncology, Shangqiu First People's Hospital, No. 292, South Kaixuan Road, Shangqiu, 476100 Henan China
| | - Xiaofeng Xu
- Department of Obsterics, Zhengzhou Yihe Hospital, Zhengzhou, Henan China
| | - Qiumin Yang
- Department of Oncology, Shangqiu First People's Hospital, No. 292, South Kaixuan Road, Shangqiu, 476100 Henan China
| | - Lu Liang
- Department of Oncology, Shangqiu First People's Hospital, No. 292, South Kaixuan Road, Shangqiu, 476100 Henan China
| | - Shulin Qiao
- Department of Oncology, Shangqiu First People's Hospital, No. 292, South Kaixuan Road, Shangqiu, 476100 Henan China
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Huang Y, Xiao D, Huang S, Zhuang J, Zheng X, Chang Y, Yin D. Circular RNA YAP1 attenuates osteoporosis through up-regulation of YAP1 and activation of Wnt/β-catenin pathway. Biomed Pharmacother 2020; 129:110365. [PMID: 32768931 DOI: 10.1016/j.biopha.2020.110365] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 06/02/2020] [Accepted: 06/02/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Osteoporosis is a systemic bone disease resulting from decreased bone mass and bone microstructure degeneration. Yes-associated protein 1 (YAP1) belongs to YAP family and plays a significant part in controlling bone quality. AIM OF THE STUDY Present study aimed to study the function and up-stream mechanism of YAP1 in the differentiation of BMSCs (bone marrow stromal cells) and MC3T3-E1. METHODS ALP staining, alizarin red staining and western blot analysis of osteogenic biomarkers determined osteogenic differentiation in BMSCs and MC3T3-E1. Mechanistic assays including luciferase reporter assay, RIP assay and RNA pull down assay disclosed the interplays between RNAs. RESULTS YAP1 promoted osteogenic differentiation of BMSCs and MC3T3-E1. Circ_0024097 originated from YAP1 sponged miR-376b-3p to elevate YAP1 expression in BMSCs and MC3T3-E1. Further, YAP1 mediated circ_0024097- promoted effects on osteogenic differentiation. Moreover, circ_0024097 activated Wnt/β-catenin pathway to facilitate osteogenic differentiation. CONCLUSION It was firstly uncovered in present study that circ_0024097 attenuated osteoporosis through promoting osteogenic differentiation via miR-376b-3p/YAP1 axis and Wnt/β-catenin pathway.
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Affiliation(s)
- Yongxiong Huang
- Department of Spine Surgery, Guangdong Provincial People's Hospital, Guangzhou, 510080, Guangdong, China
| | - Dan Xiao
- Department of Spine Surgery, Guangdong Provincial People's Hospital, Guangzhou, 510080, Guangdong, China
| | - Shuaihao Huang
- Department of Spine Surgery, Guangdong Provincial People's Hospital, Guangzhou, 510080, Guangdong, China
| | - Jianxiong Zhuang
- Department of Spine Surgery, Guangdong Provincial People's Hospital, Guangzhou, 510080, Guangdong, China
| | - Xiaoqing Zheng
- Department of Spine Surgery, Guangdong Provincial People's Hospital, Guangzhou, 510080, Guangdong, China
| | - Yunbing Chang
- Department of Spine Surgery, Guangdong Provincial People's Hospital, Guangzhou, 510080, Guangdong, China.
| | - Dong Yin
- Department of Spine Surgery, Guangdong Provincial People's Hospital, Guangzhou, 510080, Guangdong, China.
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Wang Y, Li Z, Xu S, Guo J. Novel potential tumor biomarkers: Circular RNAs and exosomal circular RNAs in gastrointestinal malignancies. J Clin Lab Anal 2020; 34:e23359. [PMID: 32419229 PMCID: PMC7370736 DOI: 10.1002/jcla.23359] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 04/12/2020] [Accepted: 04/18/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) are structural ubiquitous RNA molecules. Accumulating evidences have elucidated that circRNAs play essential roles in the pathogenesis of diseases including cancers. Exosomal circRNAs are those circRNAs stably existing in exosomes and having high clinical values as novel potential diagnostic biomarkers of many diseases. Gastrointestinal (GI) malignancies, including pancreatic cancer, colorectal cancer, hepatocellular carcinoma (HCC), and gastric cancer, are leading causes of mortality worldwide and a major global health burden. However, no ideal tumor biomarkers of screening early GI cancers are currently available. METHODS We collected data through Web of Science. The search terms used were as follows: circular RNA, circRNA, exosomes, exosomal circRNAs, biomarkers, gastrointestinal malignancies, pancreatic cancer, hepatocellular carcinoma, HCC, gastric cancer, colorectal cancer, physiological functions, biogenesis, molecular mechanism. Only articles published in English were included. RESULTS We found that several circRNAs and exosomal circRNAs have been used as potential biomarkers to screen GI cancers including pancreatic cancer (hsa_circ_0001649, circ_0007534, circ_0030235, circRHOT1, circZMYM2, circ-LDLRAD3, chr14:101402109-101464448C, chr4:52729603-52780244C, circ-IARS, and circ-PDE8A), HCC (circSETD3, circADAMTS13, hsa_circ_0007874, hsa_circ_104135, circFBLIM1, cSMARCA5, circRNA-100338, and circPTGR1), colorectal cancer (hsa_circ_0001178, hsa_circ_0000826, hsa_circ_0004771, circDDX17, circITGA7, and circHIPK3), and gastric cancer (hsa_circ_0074362, circNRIP1, circAKT3, circ-DONSON, circPSMC3, circ-KIAA1244, circPVRL3, circPVT1, hsa_circ_0000096, ciRS-133, hsa_circ_0001017, and hsa_circ_0061276). CONCLUSION CircRNAs and exosomal circRNAs have the potential high clinical diagnostic values for GI malignancies.
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Affiliation(s)
- Yezhao Wang
- Department of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of PathophysiologyNingbo University School of MedicineNingboChina
| | - Zhe Li
- Department of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of PathophysiologyNingbo University School of MedicineNingboChina
| | - Suyuan Xu
- Department of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of PathophysiologyNingbo University School of MedicineNingboChina
| | - Junming Guo
- Department of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of PathophysiologyNingbo University School of MedicineNingboChina
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86
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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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87
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Guo Y, Huang Q, Zheng J, Hsueh CY, Yuan X, Heng Y, Zhou L. Diagnostic Role of Dysregulated Circular RNA hsa_circ_0036722 in Laryngeal Squamous Cell Carcinoma. Onco Targets Ther 2020; 13:5709-5719. [PMID: 32606783 PMCID: PMC7306465 DOI: 10.2147/ott.s231076] [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: 09/15/2019] [Accepted: 05/17/2020] [Indexed: 12/14/2022] Open
Abstract
Purpose Dysregulated circular RNAs (circRNAs) have been shown to play important roles in various cancers, and could serve as diagnostic biomarkers. However, research focusing on the roles of the circRNAs in laryngeal squamous cell carcinoma (LSCC) is limited. This research aimed to explore the expressions of hsa_circ_0036722 in LSCCs and its diagnostic significance. Materials and Methods The expression levels of the circular RNA, hsa_circ_0036722, and its parental gene, RHCG, in 41 pairs of LSCC tissues and paired adjacent normal tissues were validated with quantitative real-time polymerase chain reaction (qRT-PCR). The diagnostic values of hsa_circ_0036722 alone and combined with RHCG in LSCC were evaluated using receiver operating characteristic (ROC) curves. Bioinformatics analysis predicted likely cross-talk between hsa_circ_0036722 and RHCG. Then, qRT-PCR and luciferase reporter assay were used to examine the effect of hsa_circ_0036722 on miR-1248 and miR‑1248 on RHCG expression. CCK-8 assays were conducted to investigate their effects on LSCC cell line. Results Hsa_circ_0036722 and RHCG were downregulated in LSCC tissues (P < 0.0001). The expression level of hsa_circ_0036722 was significantly correlated with the differentiation level of LSCC (P = 0.018). The area under the ROC curve of hsa_circ_0036722 was 0.838, which reached 0.859 when hsa_circ_0036722 was combined with RHCG as a biomarker. Mechanistically, hsa_circ_0036722 could directly sponge miR-1248 to antagonize its inhibitory effect on RHCG. And downregulation of hsa_circ_0036722 could promote the proliferation of LSCC cell line through upregulating miR-1248. Conclusion Our results indicated that hsa_circ_0036722 was downregulated in LSCC, which regulate the function of RHCG in LSCC via inhibiting miR-1248, and it could serve as a potential diagnostic marker for LSCC.
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Affiliation(s)
- Yang Guo
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Eye & ENT Hospital of Fudan University, Shanghai, People's Republic of China
| | - Qiang Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Eye & ENT Hospital of Fudan University, Shanghai, People's Republic of China
| | - Juan Zheng
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Eye & ENT Hospital of Fudan University, Shanghai, People's Republic of China
| | - Chi-Yao Hsueh
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Eye & ENT Hospital of Fudan University, Shanghai, People's Republic of China
| | - Xiaohui Yuan
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Eye & ENT Hospital of Fudan University, Shanghai, People's Republic of China
| | - Yu Heng
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Eye & ENT Hospital of Fudan University, Shanghai, People's Republic of China
| | - Liang Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Key Clinical Disciplines of Otorhinolaryngology, Eye & ENT Hospital of Fudan University, Shanghai, People's Republic of China
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Xia B, Zhao Z, Wu Y, Wang Y, Zhao Y, Wang J. Circular RNA circTNPO3 Regulates Paclitaxel Resistance of Ovarian Cancer Cells by miR-1299/NEK2 Signaling Pathway. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 21:780-791. [PMID: 32791450 PMCID: PMC7419276 DOI: 10.1016/j.omtn.2020.06.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 05/29/2020] [Accepted: 06/02/2020] [Indexed: 12/14/2022]
Abstract
Circular RNAs (circRNAs) were recently reported to be involved in the pathogenesis of ovarian cancer (OC); however, the molecular mechanisms of circRNAs in tumor progression and paclitaxel (PTX) resistance of OC remain largely undetermined. Here, we focused on circTNPO3 (hsa_circ_0001741), which is located on chromosome 7 (chr7): 128655032–128658211 and derived from TNPO3 gene, and thus we termed as circTNPO3. By microarray and qRT-PCR we identified circTNPO3 to be dramatically high expressed in OC samples and correlated with PTX resistance. Functionally, knockdown of circTNPO3 enhanced cell sensitivity to PTX via promoting PTX-induced apoptosis in vitro and in vivo. In mechanism, circTNPO3 acted as a sponge for microRNA-1299 (miR-1299), and NEK2 (NIMA-related kinase 2) was revealed to be target gene of miR-1299. Subsequently, functional assays illustrated that the oncogenic effects of circTNPO3 were attributed to the regulation of miR-1299/NEK2 axis. In conclusion, circTNPO3 contributed to PTX resistance of OC cells at least partly through upregulating NEK2 expression by sponging miR-1299. circTNPO3/miR-1299/NEK2 signaling pathway might play vital roles in the tumorigenesis and chemoresistance of OC.
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Affiliation(s)
- Bing Xia
- Department of Gynecologic Oncology, Hunan Cancer Hospital and the Affiliated Tumor Hospital of Xiang-Ya School of Medicine, Central South University, Changsha 410078, China
| | - Zitong Zhao
- Department of Gynecologic Oncology, Hunan Cancer Hospital and the Affiliated Tumor Hospital of Xiang-Ya School of Medicine, Central South University, Changsha 410078, China
| | - Yinnayuan Wu
- Department of Gynecologic Oncology, Hunan Cancer Hospital and the Affiliated Tumor Hospital of Xiang-Ya School of Medicine, Central South University, Changsha 410078, China
| | - Ying Wang
- Department of Gynecologic Oncology, Hunan Cancer Hospital and the Affiliated Tumor Hospital of Xiang-Ya School of Medicine, Central South University, Changsha 410078, China
| | - Yan Zhao
- Department of Gynecology and Obstetrics, The Maternal and Child Health Hospital of Hunan, Changsha 410008, China.
| | - Jing Wang
- Department of Gynecologic Oncology, Hunan Cancer Hospital and the Affiliated Tumor Hospital of Xiang-Ya School of Medicine, Central South University, Changsha 410078, China.
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89
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Xing L, Yang R, Wang X, Zheng X, Yang X, Zhang L, Jiang R, Ren G, Chen J. The circRNA circIFI30 promotes progression of triple-negative breast cancer and correlates with prognosis. Aging (Albany NY) 2020; 12:10983-11003. [PMID: 32497020 PMCID: PMC7346060 DOI: 10.18632/aging.103311] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 03/31/2020] [Indexed: 01/16/2023]
Abstract
Growing evidence suggests that circRNAs exert a critical role in tumorigenesis and cancer progression. To date, the molecular mechanisms underlying circRNAs in triple-negative breast cancer (TNBC) are still poorly known. Here, circRNA expression profile was investigated by RNA sequencing in TNBC tissues and matched para-carcinoma tissues. We found that circIFI30 was significantly up-regulated in TNBC tissues and cells using quantitative real-time PCR and in situ hybridization. High circIFI30 expression was positively correlated with clinical TNM stage, pathological grade and poor prognosis of TNBC patients. Functionally, a series of in vivo and in vitro experiments showed that knockdown of circIFI30 could markedly inhibit TNBC cell proliferation, migration, invasion and cell cycle progression, induce apoptosis as well as suppress tumorigenesis and metastasis. Up-regulation of circIFI30 exerted an opposite effect. Mechanistically, we demonstrated that circIFI30 might act as a competing endogenous RNA (ceRNA) of miR-520b-3p to abolish the suppressive effect on target gene CD44 by fluorescent in situ hybridization (FISH), dual luciferase reporter assay, RNA immunoprecipitation and RNA pull-down assays. Therefore, our work uncovers the mechanism by which circIFI30 could promote TNBC progression through circIFI30/miR-520b-3p/CD44 axis and circIFI30 could be a novel diagnostic/prognostic marker and therapeutic target for TNBC patients.
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Affiliation(s)
- Lei Xing
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Rui Yang
- Department of Cell Biology and Genetics, Chongqing Medical University, Chongqing, China
| | - Xiaosong Wang
- Department of Cell Biology and Genetics, Chongqing Medical University, Chongqing, China
| | - Xiaying Zheng
- Department of Cell Biology and Genetics, Chongqing Medical University, Chongqing, China
| | - Xin Yang
- Department of Thoracic Surgery, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Luyu Zhang
- Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing, China
| | - Rong Jiang
- Laboratory of Stem Cells and Tissue Engineering, Chongqing Medical University, Chongqing, China
| | - Guosheng Ren
- Department of Endocrine and Breast Surgery, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Junxia Chen
- Department of Cell Biology and Genetics, Chongqing Medical University, Chongqing, China
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90
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Liu Y, Song J, Liu Y, Zhou Z, Wang X. Transcription activation of circ-STAT3 induced by Gli2 promotes the progression of hepatoblastoma via acting as a sponge for miR-29a/b/c-3p to upregulate STAT3/Gli2. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2020; 39:101. [PMID: 32493490 PMCID: PMC7268652 DOI: 10.1186/s13046-020-01598-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 05/19/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Hepatoblastoma (HB) is a common liver malignancy in children. Our previous study has disclosed the crucial role of STAT3 (signal transducer and activator of transcription 3) in HB. AIM OF THE STUDY Present study was designed to study the circular RNA (circRNA) STAT3 in HB. METHODS Gel electrophoresis revealed the circular characteristics of circ-STAT3. Function assays like EdU, transwell and sphere formation assay disclosed the function of circ-STAT3 in HB cells. Mechanism assays including ChIP, RIP, RNA pull down assay demonstrated the macular mechanism underlying circ-STAT3. RESULTS Circ_0043800, which was originated from STAT3, was up-regulated in HB tissues and cells. More importantly, silencing of circ-STAT3 led to the inhibition on HB cell growth, migration and stem-cell characteristics. Circ_0043800 was predominantly located in the cytoplasm of HB cells. Then, circ_0043800 was found to up-regulate STAT3 via sponging miR-29a/b/c-3p. Besides, we identified that STAT3 overexpression partially rescued silenced circ_0043800, while miR-29a/b/c-3p inhibition completely rescued silenced circ_0043800 on HB cellular biological behaviors. Subsequently, Gli2 (GLI family zinc finger 2) was identified as another target of miR-29a/b/c-3p. Circ_0043800 served as a competing endogenous RNA (ceRNA) to up-regulate both Gli2 and STAT3 via sponging miR-29a/b/c-3p. Moreover, we figured out that Gli2 overexpression completely rescued silenced circ_0043800 on HB cell malignant behaviors. After that, we discovered that Gli2 transcriptionally activated circ_0043800. The in-vivo assays further revealed that circ_0043800 promoted HB tumor growth by up-regulation of Gli2 and STAT3. CONCLUSION Gli2-induced circ_0043800 served as the ceRNA to promote HB by up-regulation of STAT3 and Gli2 at a miR-29a/b/c-3p dependent manner.
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Affiliation(s)
- Yanfeng Liu
- Department of Hepatobiliary Surgery, Qilu Hospital of Shandong University, No.107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China
| | - Jianping Song
- Department of Hepatobiliary Surgery, Qilu Hospital of Shandong University, No.107 Wenhuaxi Road, Jinan, 250012, Shandong Province, China
| | - Yu Liu
- Department of General Surgery, 96602 Military Hospital, No.462 Chuanjin Road, Kunming, 650224, Yunnan Province, China
| | - Zhipeng Zhou
- Second Department of Hepatobiliary Surgery, PLA General Hospital, No.28 Fuxing Road, Haidian District, Beijing, 100853, China.
| | - Xianqiang Wang
- Department of Pediatric Surgery, PLA General Hospital, No.28 Fuxing Road, Haidian District, Beijing, 100853, China.
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Du Q, Zhang W, Feng Q, Hao B, Cheng C, Cheng Y, Li Y, Fan X, Chen Z. Comprehensive circular RNA profiling reveals that hsa_circ_0001368 is involved in growth hormone-secreting pituitary adenoma development. Brain Res Bull 2020; 161:65-77. [PMID: 32389802 DOI: 10.1016/j.brainresbull.2020.04.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 04/03/2020] [Accepted: 04/27/2020] [Indexed: 01/01/2023]
Abstract
Growth hormone-secreting pituitary adenoma (GHPA) represents about 20% of all histological subtypes of pituitary adenoma (PA), which may result in serious complications and shortened lifespan via growth-hormone (GH) hypersecretion. To date, no biomarkers of early diagnosis or therapeutic targets for GHPA treatment have yet been found. Recently, growing evidence has indicated that circular RNAs (circRNAs) are critical for the development and progression of numerous diseases, including cancers; however, their role in the pathogenesis of GHPA has not been reported. Here, we revealed the expression profile of circRNAs in GHPA using a circRNA microarray, and found 1938 circRNAs were upregulated and 1601 circRNAs were downregulated in GHPA versus normal control. Then the ten most up-regulated circRNAs were selected for the mapping of a circRNA-miRNA-target gene interaction network. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses further indicate that target genes were mostly enriched in the mTOR and the Wnt signaling pathway. Among these differentially expressed circRNAs, hsa_circ_0001368 was verified significant up-regulated by qRT-PCR, which was specific up-regulated in GHPA and correlated with the invasiveness and serum GH level of GHPA; functional studies indicated that knockdown of hsa_circ_0001368 significantly inhibited the proliferation, invasion and GH secreting level of GHPA primary culture cells. Moreover, hsa_circ_0001368 had a significant positive correlation with the pituitary-specific transcription factor Pit-1. In conclusion, our study identified a wealth of candidate circRNAs involved in GHPA and proposed that hsa_circ_0001368 may represent a novel potential biomarker and therapeutic target of GHPA.
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Affiliation(s)
- Qiu Du
- Department of Neurosurgery, The Affiliated Hospital of Yangzhou University, Yangzhou 225000, China; Central Laboratory, The Affiliated Hospital of Yangzhou University, Yangzhou 225000, China
| | - Weiyu Zhang
- Department of Neurosurgery, The Fifth Affiliated Hospital of SunYat-sen University, Zhuhai 519000, China
| | - Qingling Feng
- Department of Critical Care Medicine, The Affiliated Hospital of Yangzhou University, Yangzhou 225000, China
| | - Bo Hao
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Zhuhai 519000, China; Guangdong Province Translational Forensic Medicine Engineering Technology Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Zhuhai 519000, China; Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, Zhuhai 519000, China
| | - Cheng Cheng
- Department of Neurosurgery, The Affiliated Hospital of Yangzhou University, Yangzhou 225000, China
| | - Yunjiu Cheng
- Department of Cardiology, The First Affiliated Hospital of SunYat-sen University, Guangzhou 510080, China
| | - Yehai Li
- Department of Neurosurgery, Guangdong 999 Brain Hospital, Guangzhou 510507, China
| | - Xiang Fan
- Department of Neurosurgery, The Fifth Affiliated Hospital of SunYat-sen University, Zhuhai 519000, China.
| | - Zhiyong Chen
- Department of Neurosurgery, The First Affiliated Hospital of Jinan University, Guangzhou 510632, China.
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92
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Zhang S, Zhou Y, Wang Y, Wang Z, Xiao Q, Zhang Y, Lou Y, Qiu Y, Zhu F. The mechanistic, diagnostic and therapeutic novel nucleic acids for hepatocellular carcinoma emerging in past score years. Brief Bioinform 2020; 22:1860-1883. [PMID: 32249290 DOI: 10.1093/bib/bbaa023] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/09/2020] [Accepted: 02/12/2020] [Indexed: 02/07/2023] Open
Abstract
Despite The Central Dogma states the destiny of gene as 'DNA makes RNA and RNA makes protein', the nucleic acids not only store and transmit genetic information but also, surprisingly, join in intracellular vital movement as a regulator of gene expression. Bioinformatics has contributed to knowledge for a series of emerging novel nucleic acids molecules. For typical cases, microRNA (miRNA), long noncoding RNA (lncRNA) and circular RNA (circRNA) exert crucial role in regulating vital biological processes, especially in malignant diseases. Due to extraordinarily heterogeneity among all malignancies, hepatocellular carcinoma (HCC) has emerged enormous limitation in diagnosis and therapy. Mechanistic, diagnostic and therapeutic nucleic acids for HCC emerging in past score years have been systematically reviewed. Particularly, we have organized recent advances on nucleic acids of HCC into three facets: (i) summarizing diverse nucleic acids and their modification (miRNA, lncRNA, circRNA, circulating tumor DNA and DNA methylation) acting as potential biomarkers in HCC diagnosis; (ii) concluding different patterns of three key noncoding RNAs (miRNA, lncRNA and circRNA) in gene regulation and (iii) outlining the progress of these novel nucleic acids for HCC diagnosis and therapy in clinical trials, and discuss their possibility for clinical applications. All in all, this review takes a detailed look at the advances of novel nucleic acids from potential of biomarkers and elaboration of mechanism to early clinical application in past 20 years.
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Affiliation(s)
- Song Zhang
- State Key Laboratory for Diagnosis and Treatment of Infectious Disease, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang Provincial Key Laboratory for Drug Clinical Research and Evaluation, The First Affiliated Hospital in Zhejiang University, China.,College of Pharmaceutical Sciences in Zhejiang University, China
| | - Ying Zhou
- State Key Laboratory for Diagnosis and Treatment of Infectious Disease, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang Provincial Key Laboratory for Drug Clinical Research and Evaluation, The First Affiliated Hospital in Zhejiang University, China
| | - Yanan Wang
- School of Life Sciences in Nanchang University, China
| | - Zhengwen Wang
- College of Pharmaceutical Sciences in Zhejiang University, China
| | - Qitao Xiao
- College of Pharmaceutical Sciences in Zhejiang University, China
| | - Ying Zhang
- College of Pharmaceutical Sciences in Zhejiang University, China
| | - Yan Lou
- State Key Laboratory for Diagnosis and Treatment of Infectious Disease, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang Provincial Key Laboratory for Drug Clinical Research and Evaluation, The First Affiliated Hospital in Zhejiang University, China
| | - Yunqing Qiu
- State Key Laboratory for Diagnosis and Treatment of Infectious Disease, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang Provincial Key Laboratory for Drug Clinical Research and Evaluation, The First Affiliated Hospital in Zhejiang University, China
| | - Feng Zhu
- State Key Laboratory for Diagnosis and Treatment of Infectious Disease, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang Provincial Key Laboratory for Drug Clinical Research and Evaluation, The First Affiliated Hospital in Zhejiang University, China.,College of Pharmaceutical Sciences in Zhejiang University, China
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93
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The Regulatory Functions of Circular RNAs in Digestive System Cancers. Cancers (Basel) 2020; 12:cancers12030770. [PMID: 32213977 PMCID: PMC7140005 DOI: 10.3390/cancers12030770] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 03/19/2020] [Accepted: 03/20/2020] [Indexed: 02/07/2023] Open
Abstract
Circular ribonucleic acids (circRNAs), which are a type of covalently closed circular RNA, are receiving increasing attention. An increasing amount of evidence suggests that circRNAs are involved in the biogenesis and development of multiple diseases such as digestive system cancers. Dysregulated circRNAs have been found to act as oncogenes or tumour suppressors in digestive system cancers. Moreover, circRNAs are related to ageing and a wide variety of processes in tumour cells, such as cell apoptosis, invasion, migration, and proliferation. Moreover, circRNAs can perform a remarkable multitude of biological functions, such as regulating splicing or transcription, binding RNA-binding proteins to enable function, acting as microRNA (miRNA) sponges, and undergoing translated into proteins. However, in digestive system cancers, circRNAs function mainly as miRNA sponges. Herein, we summarise the latest research progress on biological functions of circRNAs in digestive system cancers. This review serves as a synopsis of potential therapeutic targets and biological markers for digestive system cancer.
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94
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Liang S, Wang F, Han J, Chen K. Latent periodic process inference from single-cell RNA-seq data. Nat Commun 2020; 11:1441. [PMID: 32188848 PMCID: PMC7080821 DOI: 10.1038/s41467-020-15295-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 03/03/2020] [Indexed: 11/15/2022] Open
Abstract
The development of a phenotype in a multicellular organism often involves multiple, simultaneously occurring biological processes. Advances in single-cell RNA-sequencing make it possible to infer latent developmental processes from the transcriptomic profiles of cells at various developmental stages. Accurate characterization is challenging however, particularly for periodic processes such as cell cycle. To address this, we develop Cyclum, an autoencoder approach identifying circular trajectories in the gene expression space. Cyclum substantially improves the accuracy and robustness of cell-cycle characterization beyond existing approaches. Applying Cyclum to removing cell-cycle effects substantially improves delineations of cell subpopulations, which is useful for establishing various cell atlases and studying tumor heterogeneity.
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Affiliation(s)
- Shaoheng Liang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
- Department of Computer Science, Rice University, Houston, TX, 77005, USA.
| | - Fang Wang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Jincheng Han
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Ken Chen
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
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95
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Li YF, Pei FL, Cao MZ. CircRNA_101951 promotes migration and invasion of colorectal cancer cells by regulating the KIF3A-mediated EMT pathway. Exp Ther Med 2020; 19:3355-3361. [PMID: 32266033 PMCID: PMC7132243 DOI: 10.3892/etm.2020.8600] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 02/18/2020] [Indexed: 12/17/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most lethal tumor types worldwide. Circular RNAs (circRNAs), which are covalent closed loops of RNA, perform vital roles for the proliferation and metastasis of a variety of tumor types. In the present study, the expression, function and molecular mechanisms of action of a novel circRNA, circRNA_101951, were examined in CRC. The expression levels of circRNA_101951 in CRC tissue and cell lines were examined using reverse transcription-quantitative (RT-qPCR). Cell proliferation, the clone formation ability, cell apoptosis, the cell cycle and the cell migratory and invasive abilities were examined using MTT assays, colony formation assays, flow cytometric assays, and cell migration and invasion assays, respectively. The effects of circRNA_101951 on Kinesin II family member 3A (KIF3A) related gene expression were examined using RT-qPCR and western blot assays. The results indicated that circRNA_101951 was increased in CRC tissues and cell lines. The downregulation of circRNA_101951 inhibited cell proliferation and colony formation as well as cell migration and invasion of CRC cell lines. In addition, the downregulation of circRNA_101951 blocked the KIF3A-mediated epithelial-mesenchymal transition (EMT) pathway, which was detected by examining the expression levels of KIF3A and EMT related proteins. In conclusion, the current data revealed that circRNA_101951 may act as a potential biomarker for patients with CRC, and provided a novel insight demonstrating that the suppression of circRNA_101951 may be a potential therapeutic strategy for CRC.
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Affiliation(s)
- Yue-Feng Li
- Department of Oncology, Linyi Central Hospital, Linyi, Shandong 276400, P.R. China
| | - Fu-Lai Pei
- Department of Oncology, Linyi Central Hospital, Linyi, Shandong 276400, P.R. China
| | - Ming-Zheng Cao
- Department of General Surgery, Linyi Central Hospital, Linyi, Shandong 276400, P.R. China
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96
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Geng X, Lin X, Zhang Y, Li Q, Guo Y, Fang C, Wang H. Exosomal circular RNA sorting mechanisms and their function in promoting or inhibiting cancer. Oncol Lett 2020; 19:3369-3380. [PMID: 32269609 PMCID: PMC7114721 DOI: 10.3892/ol.2020.11449] [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: 09/12/2019] [Accepted: 02/13/2020] [Indexed: 02/06/2023] Open
Abstract
Exosomes are nanoscale phospholipid bilayer vesicles that can be artificially engineered into vectors for the treatment of cancer. Circular RNA (circRNA), a type of non-coding RNA, has crucial regulatory functions in various aspects of cancer, such as tumorigenesis, apoptosis, proliferation, invasion, metastasis and chemo- and radiotherapeutic resistance, as well as in cancer prognosis. Notably, the exosomal transfer of circRNAs may function to both promote and inhibit cancer. Numerous studies have addressed the importance of circRNAs in cancer and non-coding RNAs (such as microRNAs and long non-coding RNAs) in exosomes. However, little research has focussed on a class of RNAs called exosomal circRNAs. The present review discusses current studies regarding exosomal circRNAs, including their biogenesis and biological functions, their abundance in exosomes and possible sorting mechanisms and their potential roles in both promoting and inhibiting cancer. It is predicted that in the next five years there will be increasing research exploring the functional mechanisms of exosomal circRNA in various diseases, in particular their roles in cancer genesis and progression.
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Affiliation(s)
- Xiuchao Geng
- Faculty of Integrated Traditional Chinese and Western Medicine, Hebei University of Chinese Medicine, Shijiazhuang, Hebei 050091, P.R. China
| | - Xiaomeng Lin
- Department of Breast Surgery, Affiliated Hospital of Hebei University, Baoding, Hebei 071000, P.R. China
| | - Yuhao Zhang
- Department of Neurosurgery, Affiliated Hospital of Hebei University, Baoding, Hebei 071000, P.R. China
| | - Qiang Li
- Faculty of Acupuncture-Moxibustion and Tuina, Hebei University of Chinese Medicine, Shijiazhuang, Hebei 050200, P.R. China
| | - Yajing Guo
- Scientific Research Center, Hebei University of Chinese Medicine, Shijiazhuang, Hebei 050091, P.R. China
| | - Chuan Fang
- Department of Neurosurgery, Affiliated Hospital of Hebei University, Baoding, Hebei 071000, P.R. China
| | - Hong Wang
- Faculty of Integrated Traditional Chinese and Western Medicine, Hebei University of Chinese Medicine, Shijiazhuang, Hebei 050091, P.R. China
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97
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Han L, Zhang X, Wang A, Ji Y, Cao X, Qin Q, Yu T, Huang H, Yin L. A Dual-Circular RNA Signature as a Non-invasive Diagnostic Biomarker for Gastric Cancer. Front Oncol 2020; 10:184. [PMID: 32154178 PMCID: PMC7047344 DOI: 10.3389/fonc.2020.00184] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 02/03/2020] [Indexed: 12/16/2022] Open
Abstract
Gastric cancer (GC) is the TOP3 leading cause of human mortality in malignant tumors. Notwithstanding, the association between GC and circRNAs is not clear. The purpose of this research was to determine the association between GC progression and circRNAs. The data of circRNAs was obtained from the Gene Expression Omnibus (GEO) database to identify gene, which differentially expressed circRNAs in GC tissues and paired normal tissues. The expression of circRNAs in cancer tissues and normal tissues were tested, and the target circRNA was verified before and after surgery in the plasma. A circRNA-micro(mi)RNA-mRNA competing endogenous RNAs (ceRNAs) network was established, and GO and KEGG analysis are performed. Five candidate circRNAs were identified through bioinformatics analysis. Hsa_circ_0021087 and hsa_circ_0005051 were both downregulated in GC tissues, cells and plasma by RTq-PCR. Additionally, there was a significant difference in the expression of plasma hsa_circ_0021087 in patients with GC at the preoperative and postoperative stages (P < 0.001). Hsa_circ_0021087 also promoted the proliferation of GC cells in vitro. Next, the circRNA-miRNA-mRNA network of hsa_circ_0021087 was predicted, which may be associated with the development of GC by bioinformatics analysis. In summary, the aforementioned dual-circular RNAs may have important implications on the potential, novel and non-invasive diagnostic method for patients with GC.
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Affiliation(s)
- Li Han
- School of Nursing, Qingdao University, Qingdao, China.,Department of Cardiology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaoying Zhang
- Department of Emergency Internal Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Aimin Wang
- School of Nursing, Qingdao University, Qingdao, China
| | - Yang Ji
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xuelei Cao
- Department of Emergency Internal Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Qiaoji Qin
- Department of Emergency Internal Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Tao Yu
- Department of Emergency Internal Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Huan Huang
- Department of Emergency Internal Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lei Yin
- Department of Emergency Internal Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
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98
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The novel circCLK3/miR-320a/FoxM1 axis promotes cervical cancer progression. Cell Death Dis 2019; 10:950. [PMID: 31831728 PMCID: PMC6908646 DOI: 10.1038/s41419-019-2183-z] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 11/28/2019] [Accepted: 11/29/2019] [Indexed: 12/18/2022]
Abstract
As a new class of non-coding RNA, circular RNAs (circRNAs) play crucial roles in the development and progression of various cancers. However, the detailed functions of circRNAs in cervical cancer have seldom been reported. In this study, circRNA sequence was applied to detect the differentially expressed circRNAs between cervical cancer tissues and adjacent normal tissues. The relationships between circCLK3 level with clinicopathological characteristics and prognosis were analyzed. In vitro CCK-8, cell count, cell colony, cell wound healing, transwell migration and invasion, and in vivo tumorigenesis and lung metastasis models were performed to evaluate the functions of circCLK3. The pull-down, RNA immunoprecipitation (RIP), luciferase reporter and rescue assays were employed to clarify the interaction between circCLK3 and miR-320a and the regulation of miR-320a on FoxM1. We found that the level of circCLK3 was remarkably higher in cervical cancer tissues than in adjacent normal tissues, and closely associated with tumor differentiation, FIGO stage and depth of stromal invasion. Down-regulated circCLK3 evidently inhibited cell growth and metastasis of cervical cancer in vitro and in vivo, while up-regulated circCLK3 significantly promoted cell growth and metastasis in vitro and in vivo. The pull-down, luciferase reporter and RIP assays demonstrated that circCLK3 directly bound to and sponge miR-320a. MiR-320a suppressed the expression of FoxM1 through directly binding to 3′UTR of FoxM1 mRNA. In addition, FoxM1 promoted cell proliferation, migration, and invasion of cervical cancer, while miR-320a suppressed cell proliferation, migration, and invasion through suppressing FoxM1, and circCLK3 enhanced cell proliferation, migration and invasion through sponging miR-320a and promoting FoxM1 expression. In summary, circCLK3 may serve as a novel diagnostic biomarker for disease progression and a promising molecular target for early diagnoses and treatments of cervical cancer.
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99
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Wang D, Hu X, Long G, Xiao L, Wang ZM, Zhou LD. The clinical value of total plasma cell-free DNA in hepatitis B virus-related hepatocellular carcinoma. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:650. [PMID: 31930051 DOI: 10.21037/atm.2019.10.78] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Background Circulating cell-free DNA (cfDNA), which is present in the blood, is related to the apoptosis and necrosis of cancer cells; inflammation also influences the total plasma level of cfDNA. However, the total plasma cfDNA level has not been investigated in patients with hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) who experience cancer and HBV infection at the same time. The aim of the study was to investigate total plasma cfDNA in patients with HBV-related HCC. Methods HBV-related HCC patients were included from January 2018 to May 2019. All patients underwent hepatectomy and were diagnosed with HCC by histopathology. Peripheral blood samples were obtained preoperatively, and the levels of total plasma cfDNA were quantitated by a fluorometric double-stranded DNA (dsDNA) assay. We examined the correlation between cfDNA and clinical parameters, and recurrence-free survival was evaluated using Kaplan-Meier curves. Results Forty-eight HBV-related HCC patients were included. The average age in years was 50.90±13.15, and the mean albumin level was 41.63±5.38 g/L. HBV-DNA, Child-Turcotte-Pugh (CTP) class, TNM stage, tumor number and vascular invasion showed a relationship with total plasma cfDNA (P<0.05), and albumin, prothrombin time (PT) and tumor diameter had linear correlation with plasma cfDNA. Based on multivariate analysis, tumor diameter, vascular invasion, and CTP class (P<0.05) were independent risk factors of total plasma cfDNA. Median recurrence times for low-cfDNA and high-cfDNA groups were 14.729±0.712 and 9.264±1.22 months (P=0.026). Conclusions In addition to tumor diameter and vascular invasion, CTP class can influence total plasma cfDNA in HBV-related HCC patients, and the total plasma cfDNA level can be used as a biomarker to predict early recurrence in HBV-related HCC patients.
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Affiliation(s)
- Dong Wang
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Xi Hu
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Guo Long
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Liang Xiao
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Zhi-Ming Wang
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Le-Du Zhou
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
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100
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Liu J, Li D, Luo H, Zhu X. Circular RNAs: The star molecules in cancer. Mol Aspects Med 2019; 70:141-152. [PMID: 31676107 DOI: 10.1016/j.mam.2019.10.006] [Citation(s) in RCA: 117] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 02/07/2023]
Abstract
Circular RNAs (circRNAs) are a class of endogenous non-coding RNAs with a closed loop structure. These RNAs are produced by pre-mRNA through variable shear processing and are highly conserved. Such highly conserved molecules play an important role in biology, especially in cancer biology. With the development of experimental techniques such as circRNA microarray screening and high-throughput sequencing technologies, the mystery of circRNAs has gradually been unveiled and the values of function and application have gradually emerged. Among them, cancer-related circRNAs are the most eye-catching. Numerous studies have shown that some circRNAs were involved in the pathogenesis of cancer. This review systematically introduced the cancer-related circRNAs and their origin, formation mechanisms, functions, and applications in the diagnosis and treatment of sixteen kinds of tumors.
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Affiliation(s)
- Jianhong Liu
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China; Cancer Center, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, 524023, China
| | - Dongpei Li
- Medical College of Georgia, Augusta University, Augusta, GA, 30901, USA
| | - Hui Luo
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
| | - Xiao Zhu
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China; Cancer Center, The Affiliated Hospital, Guangdong Medical University, Zhanjiang, 524023, China.
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