151
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Xiong W, Li D, Feng Y, Jia C, Zhang X, Liu Z. CircLPAR1 Promotes Neuroinflammation and Oxidative Stress in APP/PS1 Mice by Inhibiting SIRT1/Nrf-2/HO-1 Axis Through Destabilizing GDF-15 mRNA. Mol Neurobiol 2023; 60:2236-2251. [PMID: 36646968 DOI: 10.1007/s12035-022-03177-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 12/16/2022] [Indexed: 01/18/2023]
Abstract
Circular RNA LPAR1 (circLPAR1) was revealed to be elevated in Alzheimer's disease (AD); nevertheless, its role and mechanisms in AD remain unknown. Memory performance of APP/PS1 mice was assessed by Morris water maze test. Expression of circLPAR1 and indicated messenger RNA (mRNA) in mouse brain tissues or/and SH-SY5Y cells were tested by quantitative real-time PCR (qRT-PCR). Protein expression of indicated gene was examined by western blot. Production of proinflammatory cytokines (tumor necrosis factor-α, TNF-α; interleukin-6, IL-6; interleukin-1β, IL-1β; and interleukin-8, IL-8) and oxidative stress-related factors (reactive oxygen species, ROS; malondialdehyde, MDA; superoxide dismutase, SOD; and glutathione, GSH) were assessed by commercial kits. RNA pull down and RNA immunoprecipitation were performed to verify the interplay between up-frameshift protein 1 (UPF1) and circLPAR1 or growth differentiation factor 15 (GDF-15). CircLPAR1 was elevated, while GDF-15 was decreased in both APP/PS1 mice and Aβ-treated SH-SY5Y cells. Knockdown of circLPAR1 and overexpression of GDF-15 protected cells against Aβ-caused inflammation, oxidative stress, and neuronal apoptosis. CircLPAR1 knockdown was also proved to improve AD-related pathological traits and ameliorate cognitive dysfunctions in vivo. In mechanism, we found that circLPAR1 repressed GDF-15 expression by decreasing GDF-15 mRNA stability through UPF1 recruitment. Rescue assays suggested that sirtuin 1 (SIRT1) knockdown reversed GDF-15 overexpression-induced inhibition on Aβ-induced neuronal damage and nuclear factor E2-related factor (Nrf-2)/heme oxygenase-1 (HO-1) pathway inhibition. Moreover, the protective effect of circLPAR1 knockdown against Aβ-induced apoptosis was abolished by GDF-15 knockdown, and SIRT1 overexpression could counteract this effect of GDF-15 knockdown. CircLPAR1 knockdown improved AD-related pathological traits in vitro and in vivo by inhibiting SIRT1/Nrf-2/HO-1 axis through GDF-15.
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Affiliation(s)
- Wenping Xiong
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, No. 169, East Lake Road, Wuchang District, Wuhan, 430071, Hubei Province, People's Republic of China
| | - Dongming Li
- Department of Cardiology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei Province, People's Republic of China
| | - Yu Feng
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, No. 169, East Lake Road, Wuchang District, Wuhan, 430071, Hubei Province, People's Republic of China
| | - Chenguang Jia
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, No. 169, East Lake Road, Wuchang District, Wuhan, 430071, Hubei Province, People's Republic of China
| | - Xiangyu Zhang
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, No. 169, East Lake Road, Wuchang District, Wuhan, 430071, Hubei Province, People's Republic of China
| | - Zheng Liu
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, No. 169, East Lake Road, Wuchang District, Wuhan, 430071, Hubei Province, People's Republic of China.
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152
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Zhang Z, Huang Y, Guo AY, Yang L. Research progress of circular RNA molecules in aging and age-related diseases. Ageing Res Rev 2023; 87:101913. [PMID: 36934850 DOI: 10.1016/j.arr.2023.101913] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/05/2023] [Accepted: 03/15/2023] [Indexed: 03/19/2023]
Abstract
Circular RNAs (circRNAs) are a class of single-chain endogenous closed circular RNAs that do not have a poly(A) tail at the 3' end and a cap structure at the 5' end and are connected end-to-end by covalent bonds. CircRNAs, which are pervasive, diverse, stable, and conversed, have functions in transcriptional control and protein translation and play vital roles in modulating cell senescence, individual aging, as well as the occurrence and development of age-related diseases. Studies in recent years were reviewed from aspects including the biosynthesis mechanisms, classification, expression, biomedical functions, associations with aging and age-related diseases, and potential clinical applications of circRNAs. It will provide the theoretic basis for exploring the molecular biological mechanisms of aging, using circRNA as the therapeutic target to delay aging, and finding therapeutic strategies to prevent and treat age-related diseases.
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Affiliation(s)
- Zhidan Zhang
- Departments of Infectious Disease, The First Hospital of China Medical University, Shenyang, PR China
| | - Yuling Huang
- Departments of Geriatrics, The First Hospital of China Medical University, Shenyang, PR China
| | - AYao Guo
- Department of Breast Surgery, The First Hospital of China Medical University, Shenyang, PR China.
| | - Lina Yang
- Departments of Geriatrics, The First Hospital of China Medical University, Shenyang, PR China.
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153
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Katsushima K, Pokhrel R, Mahmud I, Yuan M, Murad R, Baral P, Zhou R, Chapagain P, Garrett T, Stapleton S, Jallo G, Bettegowda C, Raabe E, Wechsler-Reya RJ, Eberhart CG, Perera RJ. The oncogenic circular RNA circ_63706 is a potential therapeutic target in sonic hedgehog-subtype childhood medulloblastomas. Acta Neuropathol Commun 2023; 11:38. [PMID: 36899402 PMCID: PMC10007801 DOI: 10.1186/s40478-023-01521-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 03/12/2023] Open
Abstract
Medulloblastoma (MB) develops through various genetic, epigenetic, and non-coding (nc) RNA-related mechanisms, but the roles played by ncRNAs, particularly circular RNAs (circRNAs), remain poorly defined. CircRNAs are increasingly recognized as stable non-coding RNA therapeutic targets in many cancers, but little is known about their function in MBs. To determine medulloblastoma subgroup-specific circRNAs, publicly available RNA sequencing (RNA-seq) data from 175 MB patients were interrogated to identify circRNAs that differentiate between MB subgroups. circ_63706 was identified as sonic hedgehog (SHH) group-specific, with its expression confirmed by RNA-FISH analysis in clinical tissue samples. The oncogenic function of circ_63706 was characterized in vitro and in vivo. Further, circ_63706-depleted cells were subjected to RNA-seq and lipid profiling to identify its molecular function. Finally, we mapped the circ_63706 secondary structure using an advanced random forest classification model and modeled a 3D structure to identify its interacting miRNA partner molecules. Circ_63706 regulates independently of the host coding gene pericentrin (PCNT), and its expression is specific to the SHH subgroup. circ_63706-deleted cells implanted into mice produced smaller tumors, and mice lived longer than parental cell implants. At the molecular level, circ_63706-deleted cells elevated total ceramide and oxidized lipids and reduced total triglyceride. Our study implicates a novel oncogenic circular RNA in the SHH medulloblastoma subgroup and establishes its molecular function and potential as a future therapeutic target.
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Affiliation(s)
- Keisuke Katsushima
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, School of Medicine, Johns Hopkins University, 1650 Orleans St., Baltimore, MD, 21231, USA.,Johns Hopkins All Children's Hospital, St. Petersburg, USA
| | - Rudramani Pokhrel
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, School of Medicine, Johns Hopkins University, 1650 Orleans St., Baltimore, MD, 21231, USA.,Johns Hopkins All Children's Hospital, St. Petersburg, USA
| | - Iqbal Mahmud
- Department Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, USA.,Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, USA
| | - Menglang Yuan
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, School of Medicine, Johns Hopkins University, 1650 Orleans St., Baltimore, MD, 21231, USA.,Johns Hopkins All Children's Hospital, St. Petersburg, USA
| | - Rabi Murad
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, USA
| | - Prabin Baral
- Department of Physics, Florida International University, Miami, USA
| | - Rui Zhou
- Johns Hopkins All Children's Hospital, St. Petersburg, USA
| | - Prem Chapagain
- Department of Physics, Florida International University, Miami, USA.,Biomolecular Sciences Institute, Florida International University, Miami, USA
| | - Timothy Garrett
- Department Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, USA
| | | | - George Jallo
- Johns Hopkins All Children's Hospital, St. Petersburg, USA.,Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Chetan Bettegowda
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, School of Medicine, Johns Hopkins University, 1650 Orleans St., Baltimore, MD, 21231, USA.,Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Eric Raabe
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, School of Medicine, Johns Hopkins University, 1650 Orleans St., Baltimore, MD, 21231, USA.,Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, USA
| | | | - Charles G Eberhart
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, School of Medicine, Johns Hopkins University, 1650 Orleans St., Baltimore, MD, 21231, USA.,Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Ranjan J Perera
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, School of Medicine, Johns Hopkins University, 1650 Orleans St., Baltimore, MD, 21231, USA. .,Johns Hopkins All Children's Hospital, St. Petersburg, USA. .,Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, USA.
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154
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Liu L, Cui J, Chen S, Zhang X, Wang S, Huang L. Circ_002363 is regulated by the RNA binding protein BCAS2 and inhibits neodymium oxide nanoparticle-induced DNA damage by non-homologous end-joining repair. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 863:160819. [PMID: 36526188 DOI: 10.1016/j.scitotenv.2022.160819] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/17/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Neodymium oxide nanoparticles (NPs-Nd2O3) are increasingly being used in industry and biomedicine, causing adverse health effects such as lung disease. However, the underlying molecular mechanisms controlling these adverse consequences are unknown at present. In this study, a human bronchial epithelial cell line (16HBE) was exposed to increasing concentrations of NPs-Nd2O3, and Sprague-Dawley rats were treated with NPs-Nd2O3 by intratracheal instillation. We found that NPs-Nd2O3 exposure induced DNA damage and down-regulated levels of circular RNA (circRNA) circ_002363 in 16HBE cells as well as in rat lung tissue. We also observed that circ_002363 levels in the serum of workers employed in the production of NPs-Nd2O3 diminished as the work time progressed, suggesting that circ_002363 may be a potential biomarker of lung injury. Functional experiments showed that circ_002363 significantly inhibited DNA damage induced by NPs-Nd2O3. RNA pull-down and western blot assays found that circ_002363 interacted with proteins PARP1/Ku70/Ku80/Rad50, which are critical participants in non-homologous end-joining (NHEJ) DNA repair. Moreover, we found that formation of circ_002363 was regulated by the RNA binding protein Breast Carcinoma Amplified Sequence 2 (BCAS2). The BCAS2 protein affected circ_002363 expression through interaction with Pre-DNA2, the host gene of circ_002363, in NPs-Nd2O3-exposed 16HBE cells. In conclusion, our findings show first that circ_002363, which is regulated by BCAS2, acts as regulator of DNA damage via the NHEJ pathway. These results enhance our understanding of the regulatory mechanisms controlling the actions of circular RNAs and highlight the relationship between genetics and epigenetics in the development of diseases following exposure to environmental chemicals.
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Affiliation(s)
- Ling Liu
- School of Public Health, Baotou Medical College, Baotou 014030, Inner Mongolia, China
| | - Jinjin Cui
- School of Public Health, Baotou Medical College, Baotou 014030, Inner Mongolia, China
| | - Shijie Chen
- School of Public Health, Baotou Medical College, Baotou 014030, Inner Mongolia, China
| | - Xia Zhang
- School of Public Health, Baotou Medical College, Baotou 014030, Inner Mongolia, China
| | - Suhua Wang
- School of Public Health, Baotou Medical College, Baotou 014030, Inner Mongolia, China
| | - Lihua Huang
- School of Public Health, Baotou Medical College, Baotou 014030, Inner Mongolia, China.
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155
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Zou YC, Wu J, Zhao C, Luo ZR. Analysis of circular RNA expression profile of pathological bone formation in ankylosing spondylitis. Int J Rheum Dis 2023. [PMID: 36876652 DOI: 10.1111/1756-185x.14638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/09/2023] [Accepted: 02/18/2023] [Indexed: 03/07/2023]
Abstract
OBJECTIVE To screen and analyze the function of specific CircRNAs involved in pathological bone formation in patients with ankylosing spondylitis (AS). METHODS From September 2019 to October 2020, hip capsule tissues obtained from 3 patients with AS developed hip joint fusion and 3 patients with femoral neck fracture (FNF) were obtained. The circular RNA expressions of hip capsule were analyzed by Arraystar CircRNA chip. qRT-PCR analysis wan performed to identify the expression patterns of differentially expression CircRNAs. RESULTS Our findings showed that there were 25 up-regulated and 39 down-regulated differential CircRNAs. Among these CircRNAs, we screened 10 highest up-regulatedCircRNAs and 13 lowest down-regulated CircRNAs (Fold Change≥2,P<0.05). In further verification analysis, hsa_circ_0067103, hsa_circ_0004496, and hsa_circ_0002649, ACTG1 were significantly upregulated, while hsa_circ_0020273, hsa_circ_0005699, and hsa_circ_0048764 were markly downregulated in AS tissue than FNF controls. CONCLUSION The expression of CircRNAs involved of pathological bone formation in AS were significantly different from those of control group. These differentially expressed Circular RNAs may be closely related to the occurrence and development of pathological bone formation in AS.
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Affiliation(s)
- Yu-Cong Zou
- The 5th People's Hospital of Foshan, Foshan, China
| | - Juan Wu
- Department of Rehabilitation, Suining Central Hospital, Suining, China
| | - Chang Zhao
- Department of Orthopedics, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Zi-Rui Luo
- The 5th People's Hospital of Foshan, Foshan, China
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156
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Zang J, Tang X, Su X, Zhang T, Lu D, Xu A. Systematic Analysis of RNA Expression Profiles in Different Ischemic Cortices in MCAO Mice. Cell Mol Neurobiol 2023; 43:859-878. [PMID: 35449428 DOI: 10.1007/s10571-022-01220-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 03/29/2022] [Indexed: 11/03/2022]
Abstract
The prognosis of ischemic stroke patients is highly associated with the collateral circulation. And the competing endogenous RNAs (ceRNAs) generated from different compensatory supply regions may also involve in the regulation of ischemic tissues prognosis. In this study, we found the apoptosis progress of ischemic neurons in posterior circulation-supplied regions (close to PCA, cortex2) was much slower than that in anterior circulation-supplied territory (close to ACA, cortex1) in MCAO-3-h mice. Using the RNA sequencing and functional enrichment analysis, we analyzed the difference between RNA expression profile in cortex1 and cortex2 and the related biological processes. The results indicated that the differential expressed ceRNAs in cortex1 were involved in cell process under acute injury, while the differential expressed ceRNAs in cortex2 was more likely to participate in long-term injury and repair process. Besides, by establishing the miRNA-ceRNA interaction network we further sorted out two specifically distributed miRNAs, namely mmu-miR446i-3p (in cortex1) and mmu-miR3473d (in cortex2). And the specifically increased mmu-miR3473d in cortex2 mainly involved the angiogenesis and cell proliferation after ischemic stroke, which may be the critical reason for the longer therapeutic time window in cortex2. In conclusion, the present study reported the specific changes of ceRNAs in distinct compensatory regions potentially involved in the evolution of cerebral ischemic tissues and the unbalance prognosis after stroke. It provided more evidence for the collateral compensatory effects on patients' prognosis and carried out the new targets for the ischemic stroke therapy.
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Affiliation(s)
- Jiankun Zang
- Department of Neurology and Stroke Center, The First Affiliated Hospital, Jinan University, 613 West Huangpu Ave, Guangzhou, 510632, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Xionglin Tang
- Department of Neurology and Stroke Center, The First Affiliated Hospital, Jinan University, 613 West Huangpu Ave, Guangzhou, 510632, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Xuanlin Su
- Department of Neurology and Stroke Center, The First Affiliated Hospital, Jinan University, 613 West Huangpu Ave, Guangzhou, 510632, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Tianyuan Zhang
- Department of Neurology and Stroke Center, The First Affiliated Hospital, Jinan University, 613 West Huangpu Ave, Guangzhou, 510632, China.,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Dan Lu
- Department of Neurology and Stroke Center, The First Affiliated Hospital, Jinan University, 613 West Huangpu Ave, Guangzhou, 510632, China. .,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Guangzhou, China.
| | - Anding Xu
- Department of Neurology and Stroke Center, The First Affiliated Hospital, Jinan University, 613 West Huangpu Ave, Guangzhou, 510632, China. .,Clinical Neuroscience Institute, The First Affiliated Hospital of Jinan University, Guangzhou, China.
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157
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Yu XZ, Yang BW, Ao MY, Wu YK, Ye H, Wang RY, Xi MR, Hou MM. CircNFIX stimulates the proliferation, invasion, and stemness properties of ovarian cancer cells by enhancing SH3RF3 mRNA stability via binding LIN28B. Kaohsiung J Med Sci 2023; 39:234-243. [PMID: 36495291 DOI: 10.1002/kjm2.12632] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/25/2022] [Accepted: 11/15/2022] [Indexed: 12/14/2022] Open
Abstract
We aimed to study the regulatory roles and mechanism of circular nuclear factor IX (circNFIX) in cancer growth and stemness properties of ovarian cancer (OC). CircNFIX and SH3RF3 levels in OC tissues and cells were tested by quantitative real-time PCR. RNase R treatment quantified circNFIX RNA stability. Molecular interaction among circNFIX, LIN28B, and SH3RF3 was predicted by bioinformatics software and validated through RNA immunoprecipitation (RIP) assay. The gain- or loss-experiments of circNFIX on capabilities of metastasis and stemness in vitro were assessed using Cell Counting Kit-8, Transwell, western blot, and sphere-formation assays. CircNFIX and SH3RF3 were markedly elevated in OC tissues and OC cells. Knocking down circNFIX repressed the proliferation, migration, invasion, and stemness properties of A2780 and SKOV3 cells. The RIP assay verified the direct binding relationship between LIN28B, circNFIX, and SH3RF3. Additionally, overexpression of circNFIX elevated the SH3RF3 expression, while this effect was reversed by LIN28B silence. Rescue experiments demonstrated that the overexpression of SH3RF3 reversed the knockdown of circNFIX on OC cells' proliferation, metastasis, and stemness properties. CircNFIX improved the mRNA stability and translation of SH3RF3 via recruiting LIN28B, thus promoting the proliferation, invasion, and stemness properties of OC cells in vitro.
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Affiliation(s)
- Xiu-Zhang Yu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Bo-Wen Yang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Meng-Yin Ao
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Yu-Ke Wu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Hui Ye
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Rui-Yu Wang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Ming-Rong Xi
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
| | - Min-Min Hou
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, Chengdu, Sichuan, People's Republic of China
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158
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Ye J, Feng JW, Wu WX, Qi GF, Wang F, Hu J, Hong LZ, Liu SY, Jiang Y. Microarray profiling identifies hsa_circ_0082003 as a novel tumor promoter for papillary thyroid carcinoma. J Endocrinol Invest 2023; 46:509-522. [PMID: 36115894 DOI: 10.1007/s40618-022-01922-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 09/11/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Circular RNAs (circRNAs) are non-coding RNAs that have essential regulatory roles in the development of various tumors. This study explored whether circRNAs are involved in the progression of papillary thyroid carcinoma (PTC). METHODS Differentially expressed circRNAs (DECs) in four pairs of PTC and matched normal thyroid tissues were screened using a circRNA microarray. The potential functions of dysregulated circRNAs were predicted by bioinformatic analyses. Reverse transcription quantitative polymerase chain reaction (RT-qPCR) was used to determine hsa_circ_0082003 expression in 80 pairs of PTC and matched normal thyroid tissues. Cell counting kit-8, colony formation, wound healing, and Transwell assays were performed to evaluate the biological functions of hsa_circ_0082003 in PTC cells. The role of hsa_circ_0082003 in PTC tumorigenesis in vivo was validated in nude mice. RESULTS In total, 3150 DECs (2317 upregulated and 833 downregulated) were identified. Pathway enrichment analyses indicated that the dysregulated circRNAs may play roles in PTC development. RT-qPCR validation demonstrated that hsa_circ_0082003 expression was significantly increased in PTC tissues and correlated with poor clinicopathological parameters. Receiver operating characteristic curve analysis showed that hsa_circ_0082003 had good performance for diagnosing PTC and judging whether it was accompanied by lymph node metastasis. Knockdown of hsa_circ_0082003 inhibited PTC cell proliferation, migration, and invasion. Tumor formation assays in vivo showed that downregulation of hsa_circ_0082003 significantly suppressed the growth of PTC. CONCLUSION Hsa_circ_0082003 may serve as a novel diagnostic biomarker and potential therapeutic target for PTC.
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Affiliation(s)
- J Ye
- Department of Thyroid Surgery, The Third Affiliated Hospital of Soochow University, Changzhou First People's Hospital, Changzhou, Jiangsu, China
| | - J-W Feng
- Department of Thyroid Surgery, The Third Affiliated Hospital of Soochow University, Changzhou First People's Hospital, Changzhou, Jiangsu, China
| | - W-X Wu
- Department of Thyroid Surgery, The Third Affiliated Hospital of Soochow University, Changzhou First People's Hospital, Changzhou, Jiangsu, China
| | - G-F Qi
- Department of Thyroid Surgery, The Third Affiliated Hospital of Soochow University, Changzhou First People's Hospital, Changzhou, Jiangsu, China
| | - F Wang
- Department of Thyroid Surgery, The Third Affiliated Hospital of Soochow University, Changzhou First People's Hospital, Changzhou, Jiangsu, China
| | - J Hu
- Department of Thyroid Surgery, The Third Affiliated Hospital of Soochow University, Changzhou First People's Hospital, Changzhou, Jiangsu, China
| | - L-Z Hong
- Department of Thyroid Surgery, The Third Affiliated Hospital of Soochow University, Changzhou First People's Hospital, Changzhou, Jiangsu, China
| | - S-Y Liu
- Department of Thyroid Surgery, The Third Affiliated Hospital of Soochow University, Changzhou First People's Hospital, Changzhou, Jiangsu, China
| | - Y Jiang
- Department of Thyroid Surgery, The Third Affiliated Hospital of Soochow University, Changzhou First People's Hospital, Changzhou, Jiangsu, China.
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159
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Liu J, Niu L, Hao J, Yao Y, Yan M, Li H. circIPO7 dissociates caprin-1 from ribosomes and inhibits gastric cancer cell proliferation by suppressing EGFR and mTOR. Oncogene 2023; 42:980-993. [PMID: 36732659 PMCID: PMC10038803 DOI: 10.1038/s41388-023-02610-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 01/19/2023] [Accepted: 01/23/2023] [Indexed: 02/04/2023]
Abstract
Circular RNA (circRNA) is a novel RNA molecule characterized by covalently closed loop structure. Since its discovery, researchers have shown that circRNA is not "splicing noise" but a participant of various pathophysiological processes through unique mechanisms. circIPO7, which was identified as an independent prognostic factor in gastric cancer (GC) patients, was downregulated in GC tissues and cells compared to paracarcinoma tissues and normal epithelial cells. circIPO7 overexpression significantly suppressed GC cell proliferation in vitro and in vivo. Mechanistically, circIPO7 directly binds with caprin-1, an RNA-binding protein involved in mRNA translation, sharing overlapping binding sites with G3BP1. Thus, the complex containing overexpressed circIPO7 blocked the caprin-1-G3BP1 interaction and dissociated caprin-1 and its target mRNAs (EGFR and mTOR) from ribosomes, resulting in their translational inhibition, followed by PI3K/AKT/mTOR pathway inactivation. We uncovered a novel molecular mechanism for circRNAs in GC development, identifying circIPO7 as a potential target for cancer treatment.
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Affiliation(s)
- Jing Liu
- Department of Gastrointestinal Cancer Biology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, 300060, China
- Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, 300060, China
| | - Liling Niu
- Department of Gastrointestinal Cancer Biology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, 300060, China
- Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, 300060, China
| | - Jiaru Hao
- Department of Gastrointestinal Cancer Biology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, 300060, China
- Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, 300060, China
| | - Yuan Yao
- Department of Gastrointestinal Cancer Biology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, 300060, China
- Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, 300060, China
| | - Meinan Yan
- Department of Gastrointestinal Cancer Biology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, 300060, China
- Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, 300060, China
| | - Hui Li
- Department of Gastrointestinal Cancer Biology, Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center for Cancer, Tianjin, 300060, China.
- Key Laboratory of Cancer Immunology and Biotherapy, Tianjin, 300060, China.
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160
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Lao QF, Zhang QQ, Qiao ZP, Li SL, Liu L, Martin FL, Pang WY. Whole transcriptome sequencing and competitive endogenous RNA regulation network construction analysis in benzo[a]pyrene-treated breast cancer cells. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 861:160564. [PMID: 36455743 DOI: 10.1016/j.scitotenv.2022.160564] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 11/23/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
Breast cancer is the most common malignant tumor in women worldwide, and environmental pollutants are considered to be risk factors. Currently, most studies into benzo[a]pyrene (B[a]P)-induced breast cancer focus on biological effects such as proliferation, invasion, and metastasis, DNA damage, estrogen receptor (ER)-related molecular mechanisms, oxidative damage, and other metabolic pathways. This study aims to provide insights into the role of B[a]P in breast cancer development through RNA-seq and bioinformatics analysis and construction of a competing endogenous RNA (ceRNA) regulatory network. By analyzing RNA-seq results, we identified 144 differentially-expressed circRNAs, 69 differentially-expressed lncRNAs, 20 differentially-expressed miRNAs, and 212 differentially-expressed mRNAs. Following on, we analyzed the gene ontology (GO) and KEGG enrichment functions of the differentially-expressed RNAs. In addition, the protein-protein interaction (PPI) network was mapped for differentially-expressed mRNAs. Subsequently, we constructed ceRNA networks, one of which consisted of 45 dysregulated circRNAs, 11 miRNAs, and 9 mRNAs, and a second consisted of 40 lncRNAs, 11 miRNAs, and 9 mRNAs. Finally, 6 circRNAs, 4 lncRNAs, 1 miRNA, and 4 mRNAs were randomly selected for quantitative real-time PCR verification. PCR results were further verified by Western blotting assays. These results show that the expression level of differentially-expressed RNA was consistent with the sequencing data, and the Western blotting results were highly consistent with the PCR results, confirming that the sequencing result was very reliable. This study systematically explores the ceRNA atlas of differentially-expressed genes related to B[a]P exposure in breast cancer cells, providing new insights into mechanisms of environmental pollutants in breast cancer.
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Affiliation(s)
- Qiu-Feng Lao
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Heath, Guilin Medical University, Guilin 541199, Guangxi, China; School of Public Health, Guilin Medical University, Guilin 541199, Guangxi, China
| | - Qing-Quan Zhang
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Heath, Guilin Medical University, Guilin 541199, Guangxi, China; School of Public Health, Guilin Medical University, Guilin 541199, Guangxi, China
| | - Zi-Peng Qiao
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Heath, Guilin Medical University, Guilin 541199, Guangxi, China; School of Public Health, Guilin Medical University, Guilin 541199, Guangxi, China
| | - Sheng-le Li
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Heath, Guilin Medical University, Guilin 541199, Guangxi, China; School of Public Health, Guilin Medical University, Guilin 541199, Guangxi, China
| | - Liu Liu
- School of Pharmacy, Guilin Medical University, Guilin 541199, Guangxi, China
| | - Francis L Martin
- Biocel UK Ltd, Hull HU10 6TS, UK; Department of Cellular Pathology, Blackpool Teaching Hospitals NHS Foundation Trust, Whinney Heys Road, Blackpool FY3 8NR, UK
| | - Wei-Yi Pang
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Heath, Guilin Medical University, Guilin 541199, Guangxi, China; School of Public Health, Guilin Medical University, Guilin 541199, Guangxi, China; School of Humanities and Management, Guilin Medical University, Guilin 541199, Guangxi, China.
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161
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Liu L, Sang M, Shi J, Zheng Y, Meng L, Gu L, Li Z, Liu F, Bu J, Duan X, Zhao F, Zhang W, Shan B. CircRNA mannosidase alpha class 1A member 2 promotes esophageal squamous cell carcinoma progression by regulating C-C chemokine ligand 5. Biochem Biophys Res Commun 2023; 645:61-70. [PMID: 36680938 DOI: 10.1016/j.bbrc.2023.01.043] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/04/2023] [Accepted: 01/14/2023] [Indexed: 01/19/2023]
Abstract
Esophageal squamous cell carcinoma (ESCC) is a common malignancy with high morbidity and mortality. Although circular RNAs (circRNAs) play important roles in various cancers including ESCC, the role of the circRNA mannosidase alpha class 1A member 2 (circMAN1A2) in ESCC has been rarely studied. This study aimed to explore the role of circMAN1A2 in ESCC. CircMAN1A2 expression in ESCC tissues and cells was evaluated, and the relationship between circMAN1A2 expression and prognosis in patients with ESCC was analyzed. C-C chemokine ligand 5 (CCL5) was found to be a downstream target of circMAN1A2 by analysing the Agilent Microarray. Next, we performed in vitro and in vivo xenotransplantation assays to explore the role of circMAN1A2 in ESCC. We observed that high circMAN1A2 expression is associated with poor prognosis in patients with ESCC. Suppression of circMAN1A2 expression inhibits the proliferation, migration, and invasiveness of ESCC via regulating CCL5. Our results suggest that circMAN1A2 can promote the progression of ESCC by regulating CCL5. Thus, circMAN1A2 might be a novel diagnostic biomarker of ESCC, and targeting circMAN1A2 using inhibitors could be a potential therapeutic strategy to treat ESCC.
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Affiliation(s)
- Lie Liu
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Meixiang Sang
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China; Department of Tumor Research Institute, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Jian Shi
- Department of Medical Oncology, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Yang Zheng
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Lingjiao Meng
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Lina Gu
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Ziyi Li
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Fei Liu
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Jing Bu
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Xiaoyang Duan
- Department of Medical Oncology, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Feifei Zhao
- Department of Hematology, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China
| | - Wentian Zhang
- Department of Medical Oncology, Lingshou County Hospital of Integrated Traditional Chinese and Western Medicine, Shijiazhuang, Hebei, 050500, People's Republic of China
| | - Baoen Shan
- Department of Research Center, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China; Department of Tumor Research Institute, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050017, People's Republic of China.
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162
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Regulation of the tumor immune microenvironment by cancer-derived circular RNAs. Cell Death Dis 2023; 14:132. [PMID: 36797245 PMCID: PMC9935907 DOI: 10.1038/s41419-023-05647-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/18/2023]
Abstract
Circular RNA (circRNAs) is a covalently closed circular non-coding RNA formed by reverse back-splicing from precursor messenger RNA. It is found widely in eukaryotic cells and can be released to the surrounding environment and captured by other cell types. This, circRNAs serve as connections between different cell types for the mediation of multiple signaling pathways. CircRNAs reshape the tumor microenvironment (TME), a key factor involved in all stages of cancer development, by regulating epithelial-stromal transformation, tumor vascularization, immune cell function, and inflammatory responses. Immune cells are the most abundant cellular TME components, and they have profound toxicity to cancer cells. This review summarizes circRNA regulation of immune cells, including T cells, natural killer cells, and macrophages; highlights the impact of circRNAs on tumor progression, treatment, and prognosis; and indicates new targets for tumor immunotherapy.
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163
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Yan S, Pei Y, Li J, Tang Z, Yang Y. Recent Progress on Circular RNAs in the Development of Skeletal Muscle and Adipose Tissues of Farm Animals. Biomolecules 2023; 13:biom13020314. [PMID: 36830683 PMCID: PMC9953704 DOI: 10.3390/biom13020314] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/15/2023] [Accepted: 01/30/2023] [Indexed: 02/11/2023] Open
Abstract
Circular RNAs (circRNAs) are a highly conserved and specifically expressed novel class of covalently closed non-coding RNAs. CircRNAs can function as miRNA sponges, protein scaffolds, and regulatory factors, and play various roles in development and other biological processes in mammals. With the rapid development of high-throughput sequencing technology, thousands of circRNAs have been discovered in farm animals; some reportedly play vital roles in skeletal muscle and adipose development. These are critical factors affecting meat yield and quality. In this review, we have highlighted the recent advances in circRNA-related studies of skeletal muscle and adipose in farm animals. We have also described the biogenesis, properties, and biological functions of circRNAs. Furthermore, we have comprehensively summarized the functions and regulatory mechanisms of circRNAs in skeletal muscle and adipose development in farm animals and their effects on economic traits such as meat yield and quality. Finally, we propose that circRNAs are putative novel targets to improve meat yield and quality traits during animal breeding.
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Affiliation(s)
- Shanying Yan
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Key Laboratory of Animal Molecular Design and Precise Breeding of Guangdong Higher Education Institutes, School of Life Science and Engineering, Foshan University, Foshan 528231, China
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518124, China
| | - Yangli Pei
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Key Laboratory of Animal Molecular Design and Precise Breeding of Guangdong Higher Education Institutes, School of Life Science and Engineering, Foshan University, Foshan 528231, China
| | - Jiju Li
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Key Laboratory of Animal Molecular Design and Precise Breeding of Guangdong Higher Education Institutes, School of Life Science and Engineering, Foshan University, Foshan 528231, China
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518124, China
| | - Zhonglin Tang
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518124, China
- Kunpeng Institute of Modern Agriculture at Foshan, Foshan 528226, China
- Correspondence: (Z.T.); (Y.Y.)
| | - Yalan Yang
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518124, China
- Kunpeng Institute of Modern Agriculture at Foshan, Foshan 528226, China
- Correspondence: (Z.T.); (Y.Y.)
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164
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Lv J, Li K, Yu H, Han J, Zhuang J, Yu R, Cheng Y, Song Q, Bai K, Cao Q, Yang H, Yang X, Lu Q. HNRNPL induced circFAM13B increased bladder cancer immunotherapy sensitivity via inhibiting glycolysis through IGF2BP1/PKM2 pathway. J Exp Clin Cancer Res 2023; 42:41. [PMID: 36747239 PMCID: PMC9901087 DOI: 10.1186/s13046-023-02614-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 01/31/2023] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND The response rate to immunotherapy in patients with bladder cancer (BCa) remains relatively low. Considering the stable existence and important functions in tumour metabolism, the role of circRNAs in regulating immune escape and immunotherapy sensitivity is receiving increasing attention. METHODS Circular RNA (circRNA) sequencing was performed on five pairs of BCa samples, and circFAM13B (hsa_circ_0001535) was screened out because of its remarkably low expression in BCa. Further mRNA sequencing was conducted, and the association of circFAM13B with glycolysis process and CD8+ T cell activation was confirmed. The functions of circFAM13B were verified by proliferation assays, glycolysis assays, BCa cells-CD8+ T cell co-culture assays and tumorigenesis experiment among human immune reconstitution NOG mice. Bioinformatic analysis, RNA-protein pull down, mass spectrometry, RNA immunoprecipitation, luciferase reporter assay and fluorescence in situ hybridization were performed to validate the HNRNPL/circFAM13B/IGF2BP1/PKM2 cascade. RESULTS Low expression of circFAM13B was observed in BCa, and it was positively associated with lower tumour stage and better prognosis among patients with BCa. The function of CD8+ T cells was promoted by circFAM13B, and it could attenuate the glycolysis of BCa cells and reverse the acidic tumour microenvironment (TME). The production of granzyme B and IFN-γ was improved, and the immunotherapy (PD-1 antibodies) sensitivity was facilitated by the inhibition of acidic TME. Mechanistically, circFAM13B was competitively bound to the KH3-4 domains of IGF2BP1 and subsequently reduced the binding of IGF2BP1 and PKM2 3'UTR. Thus, the stability of the PKM2 mRNA decreased, and glycolysis-induced acidic TME was inhibited. The generation of circFAM13B was explored by confirming whether heterogeneous nuclear ribonucleoprotein L (HNRNPL) could promote circFAM13B formation via pre-mRNA back-splicing. CONCLUSIONS HNRNPL-induced circFAM13B could repress immune evasion and enhance immunotherapy sensitivity by inhibiting glycolysis and acidic TME in BCa through the novel circFAM13B/IGF2BP1/PKM2 cascade. Therefore, circFAM13B can be used as a biomarker for guiding the immunotherapy among patients with BCa.
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Affiliation(s)
- Jiancheng Lv
- grid.412676.00000 0004 1799 0784Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029 China
| | - Kai Li
- grid.412676.00000 0004 1799 0784Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029 China
| | - Hao Yu
- grid.412676.00000 0004 1799 0784Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029 China
| | - Jie Han
- grid.412676.00000 0004 1799 0784Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029 China
| | - Juntao Zhuang
- grid.412676.00000 0004 1799 0784Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029 China
| | - Ruixi Yu
- grid.412676.00000 0004 1799 0784Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029 China
| | - Yidong Cheng
- grid.412676.00000 0004 1799 0784Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029 China
| | - Qiang Song
- grid.412676.00000 0004 1799 0784Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029 China
| | - Kexin Bai
- grid.412676.00000 0004 1799 0784Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029 China
| | - Qiang Cao
- grid.412676.00000 0004 1799 0784Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029 China
| | - Haiwei Yang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, China.
| | - Xiao Yang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, China.
| | - Qiang Lu
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, China.
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165
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Wang K, Gao XQ, Wang T, Zhou LY. The Function and Therapeutic Potential of Circular RNA in Cardiovascular Diseases. Cardiovasc Drugs Ther 2023; 37:181-198. [PMID: 34269929 DOI: 10.1007/s10557-021-07228-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/06/2021] [Indexed: 01/14/2023]
Abstract
Circular RNA (circRNA) has a closed-loop structure, and its 3' and 5' ends are directly covalently connected by reverse splicing, which is more stable than linear RNA. CircRNAs usually possess microRNA (miRNA) binding sites, which can bind miRNAs and inhibit miRNA function. Many studies have shown that circRNAs are involved in the processes of cell senescence, proliferation and apoptosis and a series of signalling pathways, playing an important role in the prevention and treatment of diseases. CircRNAs are potential biological diagnostic markers and therapeutic targets for cardiovascular diseases (CVDs). To identify biomarkers and potential effective therapeutic targets without toxicity for heart disease, we summarize the biogenesis, biology, characterization and functions of circRNAs in CVDs, hoping that this information will shed new light on the prevention and treatment of CVDs.
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Affiliation(s)
- Kai Wang
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, 266021, Shandong, China
| | - Xiang-Qian Gao
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, 266021, Shandong, China
| | - Tao Wang
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, 266021, Shandong, China
| | - Lu-Yu Zhou
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, 266021, Shandong, China.
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166
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Circular RNAs and tuberculosis infection. Int J Biol Macromol 2023; 226:1218-1225. [PMID: 36442574 DOI: 10.1016/j.ijbiomac.2022.11.235] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/13/2022] [Accepted: 11/18/2022] [Indexed: 11/27/2022]
Abstract
Tuberculosis (TB) is a deadly infectious disease caused by Mycobacterium tuberculosis (Mtb) that affects the immune system chronically. Therefore, effective control and treatment of tuberculosis requires rapid and accurate diagnostic strategies. Tuberculosis has always been a global burden on health, social and economic systems due to the lack of standard curative and diagnostic (bio)markers. Accordingly, the management and monitoring of patients with active TB at the primary care level may be possible through new, rapid and cost-effective non-sputum-based diagnostic procedures. Biomarkers can help diagnose various diseases, including circular RNA (circRNA), which has recently been introduced as an endogenous, abundant and stable RNA in the cytoplasm with unique tissue specificity. There are frequent reports of circRNA involvement in many pathological and physiological processes in human beings. Recent studies have highlighted the presence of circRNAs in serum and their role as promising biomarkers in the diagnosis of the disease, potentially due to the continuous, stable, closed covalent circular structures and lack of easy degradation by nucleases. The purpose of this review article is to scrutinize the behavior of circulating plasma RNAs in relation to the pathogenesis and diagnosis of tuberculosis.
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167
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Zhou Y, Zhang Y, Tian J, Miao Z, Lv S, Zhao X. A Meaningful Strategy for Glioma Diagnosis via Independent Determination of hsa_circ_0004214. Brain Sci 2023; 13:brainsci13020193. [PMID: 36831736 PMCID: PMC9954075 DOI: 10.3390/brainsci13020193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/06/2023] [Accepted: 01/16/2023] [Indexed: 01/26/2023] Open
Abstract
Glioma is one of the most common primary tumors in the central nervous system. Circular RNAs (circRNAs) may serve as novel biomarkers of various cancers. The purpose of this study is to reveal the diagnostic value of hsa_circ_0004214 for glioma and to predict its molecular interaction network. The expression of hsa_circ_0004214 was evaluated by RT-qPCR. The vector and siRNAs changed the expression of hsa_circ_0004214 to judge its influence on the migration degree of glioma cells. hsa_circ_0004214 can be stably expressed at a high level in high-grade glioma tissue (WHO III/IV). The area under the ROC curve of hsa_circ_0000745 in glioma tissue was 0.88, suggesting good diagnostic value. While used to distinguish high-grade glioma, AUC value can be increased to 0.931. The multi-factor correlation analysis found that the expression of hsa_circ_0004214 was correlated with GFAP (+) and Ki67 (+) in immunohistochemistry. In addition, the migration capacity of U87 was enhanced by overexpression of hsa_circ_0004214. Through miRNA microarray analysis and database screening, we finally identified 4 miRNAs and 9 RBPs that were most likely to interact with hsa_circ_0004214 and regulate the biological functions of glioma. Hsa_circ_0004 214 plays an important role in glioma, its expression level is a promising diagnostic marker for this malignancy.
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Affiliation(s)
- Yinan Zhou
- Department of Neurosurgery, Medical School of Nantong University, Nantong University, Nantong 226019, China
- Wuxi No. 2 People’s Hospital, Affiliated Wuxi Clinical College of Nantong University, Wuxi 214002, China
| | - Yating Zhang
- Department of Neurosurgery, Medical School of Nantong University, Nantong University, Nantong 226019, China
- Wuxi No. 2 People’s Hospital, Affiliated Wuxi Clinical College of Nantong University, Wuxi 214002, China
| | - Jiajia Tian
- Wuxi Clinical Medical College of Nanjing Medical University, Nanjing Medical University, Wuxi 214002, China
| | - Zengli Miao
- Department of Neurosurgery, Medical School of Nantong University, Nantong University, Nantong 226019, China
- Wuxi No. 2 People’s Hospital, Affiliated Wuxi Clinical College of Nantong University, Wuxi 214002, China
| | - Shangrui Lv
- Wuxi Clinical Medical College of Nanjing Medical University, Nanjing Medical University, Wuxi 214002, China
| | - Xudong Zhao
- Department of Neurosurgery, Medical School of Nantong University, Nantong University, Nantong 226019, China
- Wuxi No. 2 People’s Hospital, Affiliated Wuxi Clinical College of Nantong University, Wuxi 214002, China
- Department of Neurosurgery, Wuxi No. 2 People’s Hospital, Wuxi 214002, China
- Correspondence:
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168
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Yang R, Ma L, Wan J, Li Z, Yang Z, Zhao Z, Ming L. Ferroptosis-associated circular RNAs: Opportunities and challenges in the diagnosis and treatment of cancer. Front Cell Dev Biol 2023; 11:1160381. [PMID: 37152286 PMCID: PMC10157116 DOI: 10.3389/fcell.2023.1160381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 04/11/2023] [Indexed: 05/09/2023] Open
Abstract
Ferroptosis is an emerging form of non-apoptotic regulated cell death which is different from cell death mechanisms such as autophagy, apoptosis and necrosis. It is characterized by iron-dependent lipid peroxide accumulation. Circular RNA (circRNA) is a newly studied evolutionarily conserved type of non-coding RNA with a covalent closed-loop structure. It exhibits universality, conservatism, stability and particularity. At present, the functions that have been studied and found include microRNA sponge, protein scaffold, transcription regulation, translation and production of peptides, etc. CircRNA can be used as a biomarker of tumors and is a hotspot in RNA biology research. Studies have shown that ferroptosis can participate in tumor regulation through the circRNA molecular pathway and then affect cancer progression, which may become a direction of cancer diagnosis and treatment in the future. This paper reviews the molecular biological mechanism of ferroptosis and the role of circular RNA in tumors and summarizes the circRNA related to ferroptosis in tumors, which may inspire research prospects for the precise prevention and treatment of cancer in the future.
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Affiliation(s)
- Ruotong Yang
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Clinical Laboratory of Henan Province, Zhengzhou, China
| | - Liwei Ma
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Clinical Laboratory of Henan Province, Zhengzhou, China
| | - Junhu Wan
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Clinical Laboratory of Henan Province, Zhengzhou, China
| | - Zhuofang Li
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Clinical Laboratory of Henan Province, Zhengzhou, China
| | - Zhengwu Yang
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Clinical Laboratory of Henan Province, Zhengzhou, China
| | - Zhuochen Zhao
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Clinical Laboratory of Henan Province, Zhengzhou, China
| | - Liang Ming
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Clinical Laboratory of Henan Province, Zhengzhou, China
- *Correspondence: Liang Ming,
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169
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Wang E, Wang H, Chakrabarti S. Endothelial-to-mesenchymal transition: An underappreciated mediator of diabetic complications. Front Endocrinol (Lausanne) 2023; 14:1050540. [PMID: 36777351 PMCID: PMC9911675 DOI: 10.3389/fendo.2023.1050540] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 01/17/2023] [Indexed: 01/28/2023] Open
Abstract
Diabetes and its complications represent a great burden on the global healthcare system. Diabetic complications are fundamentally diseases of the vasculature, with endothelial cells being the centerpiece of early hyperglycemia-induced changes. Endothelial-to-mesenchymal transition is a tightly regulated process that results in endothelial cells losing endothelial characteristics and developing mesenchymal traits. Although endothelial-to-mesenchymal transition has been found to occur within most of the major complications of diabetes, it has not been a major focus of study or a common target in the treatment or prevention of diabetic complications. In this review we summarize the importance of endothelial-to-mesenchymal transition in each major diabetic complication, examine specific mechanisms at play, and highlight potential mechanisms to prevent endothelial-to-mesenchymal transition in each of the major chronic complications of diabetes.
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170
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Geng Y, Wang M, Wu Z, Jia J, Yang T, Yu L. Research progress of circRNA in malignant tumour metabolic reprogramming. RNA Biol 2023; 20:641-651. [PMID: 37599427 PMCID: PMC10443989 DOI: 10.1080/15476286.2023.2247877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 08/22/2023] Open
Abstract
Cancer is a multi-factor systemic malignant disease, which has seriously threatened human health and created a heavy burden on the world economy. Metabolic reprogramming, one of the important signs of malignant tumours, provides necessary nutrition for tumorigenesis and cancer development; thus, it has recently become a research hot spot, even though the metabolic mechanism is quite intricate. Circular RNA (circRNA) affects cancer cell metabolism through various molecular mechanisms, playing an important role in promoting or suppressing cancer. Because of the structure characteristics, circRNA is quite stable, and can be utilized as biomarkers. In this review, we analysed and summarized the characteristics and biological functions of circRNA and comprehensively reviewed and discussed the important role of circRNA in cancer metabolic reprogramming. This review will provide new ideas for developing new anti-cancer therapeutic targets, mining cancer diagnostic and prognostic markers, and will provide guidance for other researchers to design circRNA-related experiments and develop anti-tumour drugs.
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Affiliation(s)
- Yikun Geng
- Graduate school, Inner Mongolia Medical University, Hohhot, China
- Clinical Medical Research Center, Inner Mongolian People’s Hospital, Hohhot, China
| | - Min Wang
- Clinical Medical Research Center, Inner Mongolian People’s Hospital, Hohhot, China
- Inner Mongolia Key Laboratory of Gene Regulation of The Metabolic Disease, Inner Mongolian People’s Hospital, Hohhot, China
- Inner Mongolia Academy of Medical Sciences, Inner Mongolian People’s Hospital, Hohhot, China
| | - Zhouying Wu
- Clinical Medical Research Center, Inner Mongolian People’s Hospital, Hohhot, China
- Inner Mongolia Key Laboratory of Gene Regulation of The Metabolic Disease, Inner Mongolian People’s Hospital, Hohhot, China
- Inner Mongolia Academy of Medical Sciences, Inner Mongolian People’s Hospital, Hohhot, China
| | - Jianchao Jia
- Clinical Medical Research Center, Inner Mongolian People’s Hospital, Hohhot, China
- Inner Mongolia Key Laboratory of Gene Regulation of The Metabolic Disease, Inner Mongolian People’s Hospital, Hohhot, China
- Inner Mongolia Academy of Medical Sciences, Inner Mongolian People’s Hospital, Hohhot, China
| | - Tingyu Yang
- Clinical Medical Research Center, Inner Mongolian People’s Hospital, Hohhot, China
- Inner Mongolia Key Laboratory of Gene Regulation of The Metabolic Disease, Inner Mongolian People’s Hospital, Hohhot, China
- Inner Mongolia Academy of Medical Sciences, Inner Mongolian People’s Hospital, Hohhot, China
| | - Lan Yu
- Clinical Medical Research Center, Inner Mongolian People’s Hospital, Hohhot, China
- Inner Mongolia Key Laboratory of Gene Regulation of The Metabolic Disease, Inner Mongolian People’s Hospital, Hohhot, China
- Inner Mongolia Academy of Medical Sciences, Inner Mongolian People’s Hospital, Hohhot, China
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CircZNF367 suppresses osteogenic differentiation of human bone marrow mesenchymal stromal/stem cells via reducing HuR-mediated mRNA stability of LRP5. Hum Cell 2023; 36:146-162. [PMID: 36169884 DOI: 10.1007/s13577-022-00798-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 09/19/2022] [Indexed: 01/07/2023]
Abstract
Osteoporosis is a highly prevalent disease characterized by bone mass loss and structural deterioration. There are evidences that altered differentiation of human bone marrow mesenchymal stromal/stem cells (hBMSCs) is a major cause for osteoporosis. Recent studies suggest that circular RNAs (circRNAs) are dysregulated in osteoporosis patients and involved in the pathogenesis of osteoporosis. In the present study, we are aimed to analyze the circRNA expression profiles in osteoporosis patients and identify potential circRNAs that involved in the differentiation of hBMSCs during osteoporosis. Transcriptome RNA-sequencing was conducted to search for differentially expressed circRNAs. Transwell assay, ARS and ALP staining, and ectopic bone formation model were performed to evaluate osteogenic differentiation of hBMSCs. RNA pull-down assay, RNA immunoprecipitation, western blot, and in vitro binding assay were conducted to evaluate the interaction of circRNAs and RNA-binding protein HuR. We found that hsa_circ_0008842 (designated as circZNF367) was upregulated in osteoporosis patients and decreased in hBMSCs during osteogenic differentiation. CircZNF367 overexpression suppressed migration, invasion and osteogenic differentiation of hBMSCs in vitro and in vivo. In comparison, knockdown of circZNF367 promoted migration, invasion and osteogenic differentiation of hBMSCs. CircZNF367 could interact with the RNA-binding protein HuR, thus reduced the mRNA stability of LRP5. Furthermore, HuR overexpression or LRP5 restoration abrogated the effects of circZNF367 overexpression on osteogenic differentiation of hBMSCs. Our results indicated that circZNF367 played a role in osteogenic differentiation of hBMSCs via reducing HuR-mediated mRNA stability of LRP5.
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172
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Feng M, Tu W, Zhou Q, Du Y, Xu K, Wang Y. circHECTD1 Promotes the Proliferation and Migration of Human Brain Vascular Smooth Muscle Cells via Interacting with KHDRBS3 to Stabilize EZH2 mRNA Expression. J Inflamm Res 2023; 16:1311-1323. [PMID: 36998321 PMCID: PMC10046248 DOI: 10.2147/jir.s398199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/15/2023] [Indexed: 04/01/2023] Open
Abstract
Purpose The objective of this paper is to explore the role of circHECTD1 in vascular smooth muscle cells (VSMCs) and atherosclerosis (AS). Methods VSMCs were treated with platelet-derived growth factor-BB (PDGF-BB) in vitro, and the level of circHECTD1 was determined using qRT-PCR. Cell proliferation, migration, and invasion were analyzed using CCK8 and transwell assays. Cell apoptosis and cell cycle were analyzed using flow cytometry. The binding interaction between circHECTD1 and KHDRBS3 or EZH2 was investigated using the RIP, RNA pull-down. Results CircHECTD1 was upregulated in PDGF-BB-induced VSMCs with a dose-dependent and time-dependent manner. Knockdown of circHECTD1 suppressed VSMCsproliferation and migration and enhanced cell apoptosis in VSMCs, while circHECTD1 overexpression yielded opposite effects. Mechanistically, circHECTD1 could interact with KHDRBS3, thus enhanced the stability of EZH2 mRNA and increased EZH2 protein level. In addition, silencing EZH2 in VSMCs reversed the proliferation-enhancing effect of circHECTD1 overexpression. Conclusion Our findings provided providing a potential prognostic and therapy biomarker for AS.
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Affiliation(s)
- Meina Feng
- Department of Neurology, Wuhan Brain Hospital, General Hospital of the YANGTZE River Shipping, Wuhan, People’s Republic of China
| | - Wenxian Tu
- Department of Neurology, Wuhan Brain Hospital, General Hospital of the YANGTZE River Shipping, Wuhan, People’s Republic of China
| | - Qin Zhou
- Department of Neurology, Wuhan Brain Hospital, General Hospital of the YANGTZE River Shipping, Wuhan, People’s Republic of China
| | - Yuanmin Du
- Department of Neurology, Wuhan Brain Hospital, General Hospital of the YANGTZE River Shipping, Wuhan, People’s Republic of China
| | - Kang Xu
- Department of Neurology, Wuhan Brain Hospital, General Hospital of the YANGTZE River Shipping, Wuhan, People’s Republic of China
| | - Yunfeng Wang
- Department of Neurology, Wuhan Brain Hospital, General Hospital of the YANGTZE River Shipping, Wuhan, People’s Republic of China
- Correspondence: Yunfeng Wang, Email
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173
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Wang B, Shen W, Yan L, Li X, Zhang L, Zhao S, Jin X. Reveal the potential molecular mechanism of circRNA regulating immune-related mRNA through sponge miRNA in the occurrence and immune regulation of papillary thyroid cancer. Ann Med 2023; 55:2244515. [PMID: 37603701 PMCID: PMC10443982 DOI: 10.1080/07853890.2023.2244515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 08/23/2023] Open
Abstract
BACKGROUND Papillary thyroid cancer (PTC) is the most common endocrine malignant tumour. The purpose of this study was to explore the potential molecular mechanism of circRNA regulating immune-related mRNA through sponge miRNA in the occurrence and immune regulation of PTC. METHODS All data were downloaded from public databases, such as GEO, Immport and TCGA. Differentially expressed (DE) mRNAs (DEmRNAs), DEmiRNAs and DEcircRNAs were identified using metaMA and limma packages. Subsequently, immune-related DEmRNAs were screened, and circRNA-miRNA-mRNA (ceRNA) regulatory network was constructed. In addition, functional annotation, protein-protein interaction (PPI) network construction, immune cell infiltration analysis and Pearson correlation analysis were performed. Finally, qRT-PCR validation and cell experiments were also performed. RESULTS In total, 2962 DEmRNAs, 78 DEmiRNAs and 51 DEcircRNAs were obtained. Subsequently, 195 immune-related DEmRNAs were obtained based on Immport database. Cytokine-cytokine receptor interaction was the only signalling pathway obtained in KEGG analysis. Then, 8 hub immune-related DEmRNAs were identified based on PPI network and CytoHubba plug-in. Subsequently, ceRNA sub-network containing hub immune-related DEmRNAs was extracted from ceRNA regulatory network. In ceRNA sub-network, hsa_circ_0082182-hsa-miR-18b-5p-FGF1/PDGFC, hsa_circ_0016404-hsa-miR-1275-FGF1/CTSB/IL13RA1, hsa_circ_0070100-hsa-miR-27a-3p/hsa-miR-27b-3p-TGFBR3, hsa_circ_0060055/hsa_circ_0038718-hsa-miR-150-3p-CXCL14, hsa_circ_0030427/hsa_circ_0002917-hsa-miR-22-3p-BMP7 and hsa_circ_0030427/hsa_circ_0002917-hsa-miR-125a-5p-LIFR axes were identified. Moreover, FGF1, PDGFC, CTSB, IL13RA1, TGFBR3, CXCL14, BMP7, LIFR, hsa-miR-125a-5p, hsa-miR-1275, hsa-miR-150-3p, hsa-miR-18b-5p and hsa-miR-27b-3p were also found to have good diagnostic accuracy and may be potential novel diagnostic markers for PTC. XCell analysis showed that the levels of immune cell infiltration (including Tregs, HSC, DC and Monocytes) were significantly different between the PTC and the control groups. Knockdown of the expression of hsa_circ_0082182 significantly inhibits the activity, proliferation, migration and invasion of TPC-1 cells. CONCLUSION Several circRNA-miRNA-mRNA axes identified in this study may be related to the occurrence, progression and survival of PTC. This lays a theoretical foundation for further understanding the molecular mechanism of PTC, and also contributes to clinical management and research.
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Affiliation(s)
- Bo Wang
- Surgical Department of Thyroid and Breast, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Wei Shen
- Surgical Department of Thyroid and Breast, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Li Yan
- Surgical Department of Thyroid and Breast, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Xiaoyu Li
- Surgical Department of Thyroid and Breast, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Linlei Zhang
- Surgical Department of Thyroid and Breast, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Suyuan Zhao
- Surgical Department of Thyroid and Breast, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Xiao Jin
- Surgical Department of Thyroid and Breast, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
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Wang Y, Liu Y, Xu Y, Xing H, Tian Z, Tang K, Rao Q, Wang M, Wang J. AML1-ETO-Related Fusion Circular RNAs Contribute to the Proliferation of Leukemia Cells. Int J Mol Sci 2022; 24:ijms24010071. [PMID: 36613512 PMCID: PMC9820653 DOI: 10.3390/ijms24010071] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/08/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022] Open
Abstract
The AML1-ETO (RUNX1-RUNX1T1) fusion gene created by the chromosome translocation t(8;21) (q21;q22) is one of the essential contributors to leukemogenesis. Only a few studies in the literature have focused on fusion gene-derived circular RNAs (f-circRNAs). Here, we report several AML1-ETO-related fusion circular RNAs (F-CircAEs) in AML1-ETO-positive cell lines and primary patient blasts. Functional studies demonstrate that the over-expression of F-CircAE in NIH3T3 cells promotes cell proliferation in vitro and in vivo. F-CircAE expression enhances the colony formation ability of c-Kit+ hematopoietic stem and progenitor cells (HSPCs). Meanwhile, the knockdown of endogenous F-CircAEs can inhibit the proliferation and colony formation ability of AML1-ETO-positive Kasumi-1 cells. Intriguingly, bioinformatic analysis revealed that the glycolysis pathway is down-regulated in F-CircAE-knockdown Kasumi-1 cells and up-regulated in F-CircAE over-expressed NIH3T3 cells. Further studies show that F-CircAE binds to the glycolytic protein ENO-1, up-regulates the expression level of glycolytic enzymes, and enhances lactate production. In summary, our study demonstrates that F-CircAE may exert biological activities on the growth of AML1-ETO leukemia cells by regulating the glycolysis pathway. Determining the role of F-CircAEs in AML1-ETO leukemia can lead to great strides in understanding its pathogenesis, thus providing new diagnostic markers and therapeutic targets.
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Affiliation(s)
- Ying Wang
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- National Clinical Research Center for Blood Diseases, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Yu Liu
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Yingxi Xu
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Haiyan Xing
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Zheng Tian
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Kejing Tang
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Qing Rao
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Min Wang
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Correspondence: (M.W.); (J.W.)
| | - Jianxiang Wang
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- National Clinical Research Center for Blood Diseases, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Correspondence: (M.W.); (J.W.)
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Abstract
Bone is a connective tissue that has important functions in the human body. Cells and the extracellular matrix (ECM) are key components of bone and are closely related to bone-related diseases. However, the outcomes of conventional treatments for bone-related diseases are not promising, and hence it is necessary to elucidate the exact regulatory mechanisms of bone-related diseases and identify novel biomarkers for diagnosis and therapy. Circular RNAs (circRNAs) are single-stranded RNAs that form closed circular structures without a 5' cap or 3' tail and polycyclic adenylate tails. Due to their high stability, circRNAs have the potential to be typical biomarkers. Accumulating evidence suggests that circRNAs are involved in bone-related diseases, including osteoarthritis, osteoporosis, osteosarcoma, multiple myeloma, intervertebral disc degeneration, and rheumatoid arthritis. Herein, we summarize the recent research progress on the characteristics and functions of circRNAs, and highlight the regulatory mechanism of circRNAs in bone-related diseases.
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Affiliation(s)
- Linghui HU
- School of Exercise and Health, Shanghai University of Sport, Shanghai200438, China
| | - Wei WU
- School of Exercise and Health, Shanghai University of Sport, Shanghai200438, China
| | - Jun ZOU
- School of Exercise and Health, Shanghai University of Sport, Shanghai200438, China,Jun ZOU,
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Zhang J, Wang C, Jia C, Zhang Y, Qing X, Zhang Y, Liu J, Xu S, Pan Z. The Role of Circular RNAs in the Physiology and Pathology of the Mammalian Ovary. Int J Mol Sci 2022; 23:15204. [PMID: 36499522 PMCID: PMC9737273 DOI: 10.3390/ijms232315204] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/24/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
Circular RNAs (circRNAs) are an abundant class of endogenous non-coding RNAs (ncRNAs) generated from exonic, intronic, or untranslated regions of protein-coding genes or intergenic regions. The diverse, stable, and specific expression patterns of circRNAs and their possible functions through cis/trans regulation and protein-coding mechanisms make circRNA a research hotspot in various biological and pathological processes. It also shows practical value as biomarkers, diagnostic indicators, and therapeutic targets. This review summarized the characteristics, classification, biogenesis and elimination, detection and confirmation, and functions of circRNAs. We focused on research advances circRNAs in the mammalian ovary under conditions including ovarian cancer, polycystic ovarian syndrome (PCOS), and maternal aging, as well as during reproductive status, including ovarian follicle development and atresia. The roles of circRNAs in high reproductive traits in domestic animals were also summarized. Finally, we outlined some obstructive factors and prospects to work with circRNA, aiming to provide insights into the functional research interests of circRNAs in the reproduction and gynecology areas.
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Affiliation(s)
- Jinbi Zhang
- College of Animal Science and Food Engineering, Jinling Institute of Technology, Nanjing 211169, China
| | - Caixia Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Chao Jia
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yi Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xinxin Qing
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yuge Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jingge Liu
- College of Animal Science and Food Engineering, Jinling Institute of Technology, Nanjing 211169, China
| | - Shiyong Xu
- College of Animal Science and Food Engineering, Jinling Institute of Technology, Nanjing 211169, China
| | - Zengxiang Pan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
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Hussen BM, Abdullah SR, Hama Faraj GS, Rasul MF, Salihi A, Ghafouri-Fard S, Taheri M, Mokhtari M. Exosomal circular RNA: a signature for lung cancer progression. Cancer Cell Int 2022; 22:378. [PMID: 36457039 PMCID: PMC9714134 DOI: 10.1186/s12935-022-02793-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/15/2022] [Indexed: 12/03/2022] Open
Abstract
Membrane vesicles having a diameter of 30-150 nm are known as exosomes. Several cancer types secrete exosomes, which may contain proteins, circular RNAs (circRNAs), microRNAs, or DNA. CircRNAs are endogenous RNAs that do not code for proteins and can create continuous and covalently closed loops. In cancer pathogenesis, especially metastasis, exosomal circRNAs (exo-circRNAs) have a crucial role mainly due to the frequently aberrant expression levels within tumors. However, neither the activities nor the regulatory mechanisms of exo-circRNAs in advancing lung cancer (LC) are obvious. A better understanding of the regulation and network connections of exo-circRNAs will lead to better treatment for LCs. The main objective of the current review is to highlight the functions and mechanisms of exo-circRNAs in LC and assess the relationships between exo-circRNA dysregulation and LC progression. In addition, underline the possible therapeutic targets based on exo-circRNA modulating.
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Affiliation(s)
- Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Kurdistan Region, Iraq
- Medical Laboratory Science, Lebanese French University, Erbil, Kurdistan Region, Iraq
| | - Snur Rasool Abdullah
- Medical Laboratory Science, Lebanese French University, Erbil, Kurdistan Region, Iraq
| | - Goran Sedeeq Hama Faraj
- Department of Medical Laboratory Science, Komar University of Science and Technology, Sulaymaniyah, Iraq
| | - Mohammed Fatih Rasul
- Department of Pharmaceutical Basic Science, Faculty of Pharmacy, Tishk International University, Erbil, Kurdistan Region, Iraq
| | - Abbas Salihi
- Department of Biology, College of Science, Salahaddin University-Erbil, Erbil, Kurdistan Region, Iraq
- Department of Biomedical Sciences, Cihan University-Erbil, Kurdistan Region, Erbil, 44001, Iraq
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Institute of Human Genetics, Jena University Hospital, Jena, Germany.
| | - Majid Mokhtari
- Tracheal Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Mao Y, Zhou Q, Wang J, Zhao R, Yang X, Shi Y, Yin J, Jiang C, He Y. CircP50 functions through the phosphorylation- and acetylation-activated p53 pathway to mediate inorganic arsenic-induced apoptosis in A549 cells. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:91232-91240. [PMID: 35881289 DOI: 10.1007/s11356-022-22094-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
As a class I carcinogen, arsenic has been reported to cause diseases accompanied by circRNAs regulating proliferation and apoptosis at the molecular level, but whether circP50 (circBase ID: hsa_circ_0008012) does the same has not been demonstrated. The aim of this study is to provide the basis for anti-lung cancer mechanism research, by studying the expression of circP50 under arsenic-induced conditions, and the effect and mechanism on the proliferation and apoptosis of A549 cells based on the circP50 knockdown models. To explore whether the circP50 is responsive to arsenic exposure, the qRT-PCR was applied to discover that the relative expression of circP50 in A549 cells increased only with increasing NaAsO2 dose and independent of its metabolites. We further determined the mechanism of circP50 by establishing circP50 knockdown models. The results of cell viability and EdU assays indicated the proliferation of A549 cells. According to the western blotting, phosphorylation of p53 at Ser15, Ser376, and Ser392 and acetylation of p53 at Lys370 and Lys382 were inhibited, resulting in the deficiency of p53 expression. Subsequently, the expression of genes downstream of p53 was reduced, including p21, PUMA, Caspase3, and Bcl-xS. Furthermore, the expressions of IKB-α, p65, and p50 decreased, but C-myc expression did not change significantly, referring to the NF-κB pathway was not dominant. The results suggest that circP50 mainly functions through the p53 pathway to mediate apoptosis in response to arsenic exposure.
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Affiliation(s)
- Yizhu Mao
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China
| | - Qian Zhou
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China
| | - Jinhua Wang
- Bijie Weining Autonomous County Maternal and Child Health Hospital, No.166 Mingzhu Avenue, Haibin Street, Weining Autonomous County, Bijie, Guizhou Province, China
| | - Ruihuan Zhao
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China
| | - Xuefei Yang
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China
| | - Ya Shi
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China
| | - Jinyao Yin
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China
| | - Chenglan Jiang
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China
| | - Yuefeng He
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China.
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Liang X, Liu X, Song Z, Zhu J, Zhang J. Hsa_circ_0097922 promotes tamoxifen resistance and cell malignant behaviour of breast cancer cells by regulating ACTN4 expression via miR-876-3p. Clin Exp Pharmacol Physiol 2022; 49:1257-1269. [PMID: 35856314 DOI: 10.1111/1440-1681.13702] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/22/2022] [Accepted: 07/15/2022] [Indexed: 01/31/2023]
Abstract
An increasing number of findings have verified the critical roles of circular RNAs (circRNAs) in human cancers, and chemotherapy resistance is a poor prognostic factor for breast cancer (BC). This study is designed to explore the function of hsa_circ_0097922 in the tamoxifen resistance of breast cancer. Hsa_circ_0097922, microRNA-876-3p (miR-876-3p), and alpha-actinin 4 (ACTN4) level were detected by real-time quantitative polymerase chain reaction (RT-qPCR). Cell survival, proliferation, apoptosis, migration and invasion were detected by Cell Counting Kit-8 (CCK-8), 5-ethynyl-2'-deoxyuridine (EdU), and flow cytometry, wound healing and Transwell assays. Protein levels of proliferating cell nuclear antigen (PCNA), B-cell lymphoma-2 (Bcl-2), cleaved caspase 3, matrix metalloproteinase 9 (MMP9), and ACTN4 were determined using western blot assay. Using bioinformatics software, the binding between miR-876-3p and hsa_circ_0097922 or ACTN4 was predicted, followed by confirmation by RNA immunoprecipitation (RIP) and RNA pull-down assays. A xenograft tumour model in vivo analysed the biological role of hsa_circ_0097922 on BC tumour growth and drug resistance. Hsa_circ_0097922 and ACTN4 were increased, and miR-876-3p was decreased in tamoxifen resistance BC cells. Moreover, hsa_circ_0097922 knockdown can block BC cell malignant behaviour and tamoxifen resistance in vitro. Mechanically, hsa_circ_0097922 acted as a sponge of miR-876-3p to regulate ACTN4 expression. Hsa_circ_0097922 silencing increased the drug sensitivity of BC in vivo. Hsa_circ_0097922 might regulate BC cell malignant behaviour and tamoxifen resistance partly by regulating the miR-876-3p/ACTN4 axis, hinting at a promising therapeutic target for the BC treatment.
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Affiliation(s)
- Xiuju Liang
- Department of Oncology, No. 960 Hospital, the People's Liberation Army, Jinan City, Shandong, China
| | - Xiao Liu
- Department of Oncology, No. 960 Hospital, the People's Liberation Army, Jinan City, Shandong, China
| | - Zhonghua Song
- Department of General Practice, Shandong Provincial Third Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, Shandong, China
| | - Jian Zhu
- Department of Thyroid Breast Surgery, No. 960 Hospital, the People's Liberation Army, Jinan City, Shandong, China
| | - Jinqing Zhang
- Department of General Surgery, Shandong Provincial Third Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, Shandong, China
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180
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Gao S, Zhao T, Meng F, Luo Y, Li Y, Wang Y. Circular RNAs in endometrial carcinoma (Review). Oncol Rep 2022; 48:212. [PMID: 36263622 PMCID: PMC9608256 DOI: 10.3892/or.2022.8427] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 08/17/2022] [Indexed: 11/24/2022] Open
Abstract
As one of the leading causes of death in women in Western developed countries, endometrial carcinoma (EC) is a common gynecological malignant tumor that seriously threatens women's health. In recent years, a trend has emerged of EC being manifested in younger women, and its overall incidence is gradually rising. Circular RNAs (circRNAs) are novel endogenous transcripts that have limited ability to encode proteins due to their covalent closed‑loop structure, which differs from that of other types of RNA. A growing body of evidence has demonstrated that circRNAs fulfill an important role in lung cancer, gastric cancer, breast cancer, EC and other malignant tumor types, and they can affect the occurrence and development of these malignancies through a variety of pathways, further demonstrating the potential of circRNAs as molecular biomarkers for the diagnosis, treatment and prognosis of malignant tumors. The purpose of the present review is to summarize the current understanding of the biogenesis and effects of circRNAs, and to discuss the expression, function and underlying mechanism of circRNAs in EC in order to identify potential novel biomarkers.
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Affiliation(s)
- Shan Gao
- Department of Obstetrics and Gynecology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Tianjun Zhao
- Department of Obstetrics and Gynecology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Fangchi Meng
- Department of Obstetrics and Gynecology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Yinzhou Luo
- Fourth Department of Orthopedic Surgery, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Yan Li
- Department of Obstetrics and Gynecology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Yong Wang
- Department of Orthopedic Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
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181
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Zhang F, Li L, Fan Z. circRNAs and their relationship with breast cancer: a review. World J Surg Oncol 2022; 20:373. [PMID: 36443878 PMCID: PMC9703749 DOI: 10.1186/s12957-022-02842-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 11/20/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Recently, an increasing number of studies have been conducted on circular RNAs (circRNAs) that have demonstrated their different roles in a variety of biological processes. Moreover, a large number of circRNAs have been shown to be involved in the occurrence and development of breast cancer (BC). MAIN BODY Both functional and mechanistic experiments have shown that circular RNAs (circRNAs) can act as competing endogenous RNAs by sponging miRNAs, encoding proteins, and regulating parental genes. In doing so, circRNAs modulate the proliferation, migration, apoptosis, and invasion of BC cells in vitro as well as tumor growth and metastasis in vivo. Moreover, scores of circRNAs have been demonstrated to be related to clinicopathological features, prognosis, and treatment sensitivity in patients with BC; many circRNAs have shown potential as biomarkers for diagnosis, drug sensitivity, and prognosis prediction. Furthermore, researchers have focused on circRNAs as potential therapeutic targets. CONCLUSION In this review, we briefly summarize the functions and categories of circRNAs, their different roles in BC, and recent research and therapeutic progress related to circRNAs.
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Affiliation(s)
- Fan Zhang
- grid.430605.40000 0004 1758 4110Department of Breast Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin 130021 China
| | - Liying Li
- grid.430605.40000 0004 1758 4110Department of Breast Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin 130021 China
| | - Zhimin Fan
- grid.430605.40000 0004 1758 4110Department of Breast Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin 130021 China
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182
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Liu B, Dong C, Chen Q, Fan Z, Zhang Y, Wu Y, Cui T, Liu F. Circ_0007534 as new emerging target in cancer: Biological functions and molecular interactions. Front Oncol 2022; 12:1031802. [PMID: 36505874 PMCID: PMC9730518 DOI: 10.3389/fonc.2022.1031802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 11/08/2022] [Indexed: 11/25/2022] Open
Abstract
Circular RNA (circRNAs), an important member of the non-coding RNA (ncRNA) family, are widely expressed in a variety of biological cells. Owing to their stable structures, sequence conservations, and cell- or tissue-specific expressions, these RNA have become a popular subject of scientific research. With the development of sequencing methods, it has been revealed that circRNAs exert their biological function by sponging microRNAs (miRNAs), regulating transcription, or binding to proteins. Humans have historically been significantly impacted by various types of cancer. Studies have shown that circRNAs are abnormally expressed in various cancers and are involved in the occurrence and development of malignant tumors, such as tumor cell proliferation, migration, and invasion. As one of its star molecules, circ_0007534 is upregulated in colorectal, cervical, and pancreatic cancers; is closely related to the occurrence, development, and prognosis of tumors; and is expected to become a novel tumor marker and therapeutic target. This article briefly reviews the expression and mechanism of circ_0007534 in malignant tumors based on the domestic and foreign literature.
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Affiliation(s)
| | | | | | | | | | | | | | - Fuquan Liu
- Department of Interventional Therapy, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
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183
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Circular RNA circPTPRF promotes the progression of GBM via sponging miR-1208 to up-regulate YY1. Cancer Cell Int 2022; 22:359. [DOI: 10.1186/s12935-022-02753-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 10/07/2022] [Indexed: 11/18/2022] Open
Abstract
AbstractGlioblastoma (GBM) is the most common primary malignant tumor in the brain, and its robust proliferation and invasion abilities reduce the survival time of patients. Circular RNAs (circRNAs) play an essential role in various tumors, such as regulating tumor cell proliferation, apoptosis, invasion, metastasis, and other progressive phenotypes through different mechanisms. Finding novel circRNAs may significantly contribute to the prognosis of GBM and provide the basis for the targeted therapy of GBM. In this study, we found circPTPRF is a novel circRNA that has never been studied, which was highly expressed in GBM and is closely related to poor patient prognoses. After knockdown or overexpression in glioma cell lines (U87 and LN229) and glioma stem cells (GSCs), we identified that circPTPRF could promote proliferation, invasion, and neurospheres formation abilities of GBM via in vitro and in vivo experiments. Mechanisms, miR-1208 was confirmed as a target of circPTPRF, and miR-1208 can also target the 3’UTR of YY1, and they were proved by luciferase reporter, western blotting (WB), qPCR and RNA immunoprecipitation (RIP) assays. The following rescue experiments demonstrated that circPTPRF was a miR-1208 sponge for upregulating YY1 expression to promote proliferation, invasion and neurosphere formation abilities of GBM in vitro. In conclusion, the circPTPRF/miR-1208/YY1 axis can regulate GBM progression. CircPTPRF may play an essential role in GBM diagnosis and prognostic prediction and be an important molecular target for GBM therapy.
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184
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Involvement of circRNAs in the Development of Heart Failure. Int J Mol Sci 2022; 23:ijms232214129. [PMID: 36430607 PMCID: PMC9697219 DOI: 10.3390/ijms232214129] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/05/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022] Open
Abstract
In recent years, interest in non-coding RNAs as important physiological regulators has grown significantly. Their participation in the pathophysiology of cardiovascular diseases is extremely important. Circular RNA (circRNA) has been shown to be important in the development of heart failure. CircRNA is a closed circular structure of non-coding RNA fragments. They are formed in the nucleus, from where they are transported to the cytoplasm in a still unclear mechanism. They are mainly located in the cytoplasm or contained in exosomes. CircRNA expression varies according to the type of tissue. In the brain, almost 12% of genes produce circRNA, while in the heart it is only 9%. Recent studies indicate a key role of circRNA in cardiomyocyte hypertrophy, fibrosis, autophagy and apoptosis. CircRNAs act mainly by interacting with miRNAs through a "sponge effect" mechanism. The involvement of circRNA in the development of heart failure leads to the suggestion that they may be promising biomarkers and useful targets in the treatment of cardiovascular diseases. In this review, we will provide a brief introduction to circRNA and up-to-date understanding of their role in the mechanisms leading to the development of heart failure.
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185
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Ding P, Liu P, Wu H, Yang P, Tian Y, Zhao Q. Functional properties of circular RNAs and research progress in gastric cancer. Front Oncol 2022; 12:954637. [DOI: 10.3389/fonc.2022.954637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 10/24/2022] [Indexed: 11/18/2022] Open
Abstract
Circular RNAs (circRNAs) are a class of closed circular non-coding RNAs widely exist in eukaryotes, with high stability and species conservation. A large number of studies have shown that circRNAs are abnormally expressed in various tumor tissues, and are abundant in plasma with long half-life and high specificity, which may be served as potential tumor biomarkers for early diagnosis, treatment and prognosis of malignant tumors. However, the role of circRNAs is still poorly understood in gastric cancer. This article reviews the research progress of circRNAs in gastric cancer in recent years so as to explore the relationship between circRNAs and the occurrence and the development of gastric cancer, and provide new ideas for the diagnosis and treatment of gastric cancer.
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186
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Lu GF, Geng F, Deng LP, Lin DC, Huang YZ, Lai SM, Lin YC, Gui LX, Sham JSK, Lin MJ. Reduced CircSMOC1 Level Promotes Metabolic Reprogramming via PTBP1 (Polypyrimidine Tract-Binding Protein) and miR-329-3p in Pulmonary Arterial Hypertension Rats. Hypertension 2022; 79:2465-2479. [PMID: 35997022 DOI: 10.1161/hypertensionaha.122.19183] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 08/01/2022] [Indexed: 02/05/2023]
Abstract
BACKGROUND Pulmonary arterial hypertension maintains rapid cell proliferation and vascular remodeling through metabolic reprogramming. Recent studies suggested that circRNAs play important role in pulmonary vascular remodeling and pulmonary arterial smooth muscle cells proliferation. However, the relationship between circRNA, cell proliferation, and metabolic reprogramming in pulmonary arterial hypertension has not been investigated. METHODS RNA-seq and qRT-PCR reveal the differential expression profile of circRNA in pulmonary arteries of pulmonary arterial hypertension rat models. Transfection was used to examine the effects of circSMOC1 on pulmonary artery smooth muscle cells, and the roles of circSMOC1 in vivo were investigated by adenoassociated virus. Mass spectrometry, RNA pull-down, RNA immunoprecipitation, and dual-luciferase reporter assay were performed to investigate the signaling pathway of circSMOC1 regulating the metabolic reprogramming. RESULTS CircSMOC1 was significantly downregulated in pulmonary arteries of pulmonary arterial hypertension rats. CircSMOC1 knockdown promoted proliferation and migration and enhanced aerobic glycolysis of pulmonary artery smooth muscle cells. CircSMOC1 overexpression in vivo alleviates pulmonary vascular remodeling, right ventricular pressure, and right heart hypertrophy. In the nucleus, circSMOC1 directly binds to PTBP1 (polypyrimidine tract-binding protein), competitively inhibits the specific splicing of PKM (pyruvate kinase M) premRNA, resulting in the upregulation of PKM2 (pyruvate kinase M2), the key enzyme of aerobic glycolysis, to enhance glycolysis. In the cytoplasm, circSMOC1 acted as a miR-329-3p sponge, and its reduction in pulmonary arterial hypertension suppressed PDHB (pyruvate dehydrogenase E1 subunit beta) expression, leading to the impairment of mitochondrial oxidative phosphorylation. CONCLUSIONS circSMOC1 is crucially involved in the metabolic reprogramming of pulmonary artery smooth muscle cells through PTBP1 and miR-329-3p to regulate pulmonary vascular remodeling in pulmonary arterial hypertension.
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Affiliation(s)
- Gui-Feng Lu
- Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian Province, People’s Republic of China
| | - Fei Geng
- Department of Physiology and Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou, Guangdong province, People’s Republic of China
| | - Li-Ping Deng
- Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian Province, People’s Republic of China
| | - Da-Cen Lin
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou, Fujian Province, People’s Republic of China
| | - Yan-Zhen Huang
- Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian Province, People’s Republic of China
| | - Su-Mei Lai
- Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian Province, People’s Republic of China
| | - Yi-Chen Lin
- Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian Province, People’s Republic of China
| | - Long-Xin Gui
- Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian Province, People’s Republic of China
| | - James S K Sham
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Mo-Jun Lin
- Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian Province, People’s Republic of China
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187
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Zhao F, Zhang X, Pei X, Yang D, Han M. Deregulated Expression of Circular RNAs Is Associated with Immune Evasion and Leukemia Relapse after Allogeneic Hematopoietic Stem Cell Transplantation. Genes (Basel) 2022; 13:1986. [PMID: 36360223 PMCID: PMC9689715 DOI: 10.3390/genes13111986] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/21/2022] [Accepted: 10/25/2022] [Indexed: 07/26/2023] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) are a novel class of epigenetic regulators that participate in leukemogenesis. However, their roles in leukemia relapse after transplantation remain unclear. METHODS We defined the circRNAs profile of the bone-marrow-enriched CD34+ cells from ten acute myeloid leukemia (AML) patients after transplantation (five relapse [RE] and five continuous complete remission [CR]) and four healthy controls (HCs) by RNA-seq. Differentially expressed circRNAs were validated using real-time quantitative polymerase chain reaction (RT-qPCR) in an independent cohort of six AML patients with pairwise samples at diagnosis and at relapse and six controls. RESULTS The bioinformatics analysis revealed a distinct circRNAs profile in relapse patients compared with controls (CR or HCs), while there was no significant difference between CR and HCs. Functional enrichment analysis demonstrated that mRNAs co-expressed with identified circRNAs were primarily involved in immune-related pathways, including the T cell receptor signaling pathway and lymphocyte differentiation. Moreover, we performed a protein-protein interaction network based on the immune-related genes and annotated 20 hub genes. The abnormal expression of hub genes was responsible for impairing T cell co-stimulation and activation, thus contributing to the immune escape of relapse blasts. We further constructed competing endogenous RNAs (ceRNA) regulatory networks based on immune-related genes and identified 10 key circRNAs that are associated with immune evasion. Six candidate circRNAs and their associated miRNA/mRNAs in the ceRNA network were randomly selected to be validated in another set by RT-qPCR. CONCLUSIONS CircRNAs dysregulation may be involved in the immune evasion of relapse blasts and is associated with AML relapse. Our results identify several promising biomarkers and might provide novel insights into the biology of AML relapse post-transplantation.
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188
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Ma L, Chu H, Wang M, Zhang Z. Biological functions and potential implications of circular RNAs. J Biomed Res 2022; 37:89-99. [PMID: 36814375 PMCID: PMC10018409 DOI: 10.7555/jbr.36.20220095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
Circular RNAs (circRNAs) are characterized by a covalent closed-loop structure with an absence of both 5' cap structure and 3' polyadenylated tail. Numerous studies have found that circRNAs play an important role in various diseases and have a variety of biological regulatory mechanisms, including acting as microRNA sponges, interacting with proteins, modulating the expression of related genes and translating into peptides or proteins. CircRNAs have also been used as biomarkers for a number of diseases, which could improve clinical practice. This review summarizes the most recent advances in biogenesis and knowledge of the biological functions of circRNAs as well as the related bioinformatics databases. We specifically describe developments in understanding of circRNA functions in the field of environmental exposure-induced diseases. Finally, we focus on potential clinical implications of circRNAs to facilitate their clinical transformation into disease treatment.
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Affiliation(s)
- Lan Ma
- Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Haiyan Chu
- Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Meilin Wang
- Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Zhengdong Zhang
- Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China.,Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, Jiangsu 211166, China
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189
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George S, Cassidy RN, Saintilnord WN, Fondufe-Mittendorf Y. Epigenomic reprogramming in iAs-mediated carcinogenesis. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2022; 96:319-365. [PMID: 36858778 DOI: 10.1016/bs.apha.2022.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Arsenic is a naturally occurring metal carcinogen found in the Earth's crust. Millions of people worldwide are chronically exposed to arsenic through drinking water and food. Exposure to inorganic arsenic has been implicated in many diseases ranging from acute toxicities to malignant transformations. Despite the well-known deleterious health effects of arsenic exposure, the molecular mechanisms in arsenic-mediated carcinogenesis are not fully understood. Since arsenic is non-mutagenic, the mechanism by which arsenic causes carcinogenesis is via alterations in epigenetic-regulated gene expression. There are two possible ways by which arsenic may modify the epigenome-indirectly through an arsenic-induced generation of reactive oxygen species which then impacts chromatin remodelers, or directly through interaction and modulation of chromatin remodelers. Whether directly or indirectly, arsenic modulates epigenetic gene regulation and our understanding of the direct effect of this modulation on chromatin structure is limited. In this chapter we will discuss the various ways by which inorganic arsenic affects the epigenome with consequences in health and disease.
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Affiliation(s)
- Smitha George
- Department of Epigenetics, Van Andel Institute, Grand Rapids, MI, United States
| | - Richard N Cassidy
- Department of Epigenetics, Van Andel Institute, Grand Rapids, MI, United States
| | - Wesley N Saintilnord
- Department of Epigenetics, Van Andel Institute, Grand Rapids, MI, United States; Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, United States
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190
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Yu W, Liu R, Miao Z, Zhang L, Sheyhidin I, Ainiwaer J. The diagnostic significance of blood-derived circRNAs in NSCLC: Systematic review and meta-analysis. Front Oncol 2022; 12:987704. [PMID: 36353543 PMCID: PMC9638072 DOI: 10.3389/fonc.2022.987704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 10/03/2022] [Indexed: 12/24/2022] Open
Abstract
Background Using blood-derived circular RNAs (circRNAs) may be an efficient tool for noninvasive fluid biopsy in diagnosing non-small cell lung cancer (NSCLC). However, no relevant systemic meta-analysis has been conducted so far to support the diagnostic value of using blood-derived circRNAs in NSCLC clinically. The aim of this study is to clarify the issue through a meta-analysis. Methods A systematic search strategy was used to search relevant literature in the databases of PubMed, Web of Science, and Cochrane Library from 2017 to 2022. The relationship between the diagnostic accuracy of circRNAs and NSCLC was analyzed. For the purpose of evaluating the quality of the literature, Quality Assessment of Diagnostic Accuracy Studies-2 (QUADAS-2) was used. Statistical analyses were assessed using Stata software (version 17.0) and META-DISC (version 1.4). Results The meta-analysis included 1,093 patients with NSCLC and 959 controls. Results are as follows: pooled sensitivity, 0.78 (95% CI = 0.71–0.83, I2 = 71.86); pooled specificity, 0.76 (95% CI = 0.70–0.82, I2 = 70.12); pooled positive likelihood ratio (PLR), 3.3 (95% CI = 2.6–4.2, I2 = 37.56); pooled negative likelihood ratio (NLR), 0.29 (95% CI = 0.23–0.37, I2 = 64.67); diagnostic odds ratio (DOR), 11.42 (95% CI = 7.88–16.56, I2 = 99.05); area under the receiver operating characteristic curve (AUC), 0.84 (95% CI = 0.80–0.87). Based on the subgroup analysis, it appears that the heterogeneity is primarily caused by the NSCLC subgroup. Conclusion circRNAs are highly useful diagnostic biomarkers for NSCLC in China. Further prospective studies on the diagnostic value of circRNAs should be conducted in multiple countries. Systematic review registration https://www.crd.york.ac.uk/prospero/, identifier CRD42022323804.
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Affiliation(s)
- Weijie Yu
- Department of Cardio-Thoracic Surgery, The Fourth Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - Ruixue Liu
- Department of Thoracic Surgery, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - Zhoulin Miao
- Radiology Department, Qingdao Municipal Hospital, Qingdao, Shandong, China
| | - Liwei Zhang
- Department of Thoracic Surgery, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - Ilyar Sheyhidin
- Department of Thoracic Surgery, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - Julaiti Ainiwaer
- Department of Thoracic Surgery, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
- *Correspondence: Julaiti Ainiwaer,
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191
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Zhang S, Zheng S. Host Combats IBDV Infection at Both Protein and RNA Levels. Viruses 2022; 14:v14102309. [PMID: 36298864 PMCID: PMC9607458 DOI: 10.3390/v14102309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/15/2022] [Accepted: 10/18/2022] [Indexed: 01/24/2023] Open
Abstract
Infectious bursal disease (IBD) is an acute, highly contagious, and immunosuppressive avian disease caused by infectious bursal disease virus (IBDV). In recent years, with the emergence of IBDV variants and recombinant strains, IBDV still threatens the poultry industry worldwide. It seems that the battle between host and IBDV will never end. Thus, it is urgent to develop a more comprehensive and effective strategy for the control of this disease. A better understanding of the mechanisms underlying virus-host interactions would be of help in the development of novel vaccines. Recently, much progress has been made in the understanding of the host response against IBDV infection. If the battle between host and IBDV at the protein level is considered the front line, at the RNA level, it can be taken as a hidden line. The host combats IBDV infection at both the front and hidden lines. Therefore, this review focuses on our current understanding of the host response to IBDV infection at both the protein and RNA levels.
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Affiliation(s)
- Shujun Zhang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Shijun Zheng
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
- Correspondence: ; Tel.: +86-(10)-6273-4681
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192
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He R, Wen W, Fu B, Zhu R, Chen G, Bai S, Cao X, Wang H. CircKIF4A Is a Prognostic Factor and Modulator of Natural Killer/T-Cell Lymphoma Progression. Cancers (Basel) 2022; 14:cancers14194950. [PMID: 36230873 PMCID: PMC9562661 DOI: 10.3390/cancers14194950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/06/2022] [Accepted: 10/06/2022] [Indexed: 11/24/2022] Open
Abstract
Simple Summary CircKIF4A is significantly upregulated in NKTL cell lines and its upregulation correlates with the poor prognosis of NKTL. CircKIF4A regulates PDK1 and BCL11A expressions by sponging miR-1231. Our data indicated that circKIF4A is oncogenic in NKTL and that it is a predictor of poor prognosis of NKTL. Abstract Background: Natural killer/T-cell lymphoma (NKTL) is difficult to treat. Circular RNAs (circ RNAs) have been implicated in tumorigenesis. However, the function of circKIF4A in NKTL has not been investigated. Methods: QPCR analysis was used to compare circKIF4A levels in NKTL cell lines versus normal cell lines. Kaplan–Meier survival analysis was used to assess the effect of circKIF4A on the prognosis of NKTL. The correlation between clinicopathological features and circKIF4A expression was examined using cox regression analysis. Luciferase reporter, RNA immunoprecipitation and immunohistochemistry assays were also used to investigate the mechanisms of circKIF4A in NKTL. Results: Our analyses revealed that circKIF4A is significantly upregulated in NKTL cell lines and that its upregulation correlates with the poor prognosis of NKTL. The silencing of circKIF4A significantly suppressed glucose uptake and lactate production in NKTL cells. Moreover, we showed that circKIF4A, PDK1, and BCL11A bind miR-1231 and that circKIF4A regulates PDK1 and BCL11A expressions by sponging miR-1231. Conclusions: During NKTL progression, circKIF4A regulated PDK1 and BCL11A levels by sponging miR-1231. Our data indicated that circKIF4A is oncogenic in NKTL and that it is a predictor of poor prognosis of NKTL.
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Affiliation(s)
- Rongfang He
- The First Affiliated Hospital, Department of Pathology, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Wei Wen
- The First Affiliated Hospital, Department of Pathology, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Bibo Fu
- Department of Hematological Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Renjie Zhu
- East Hospital Affiliated to Tongji University, Shanghai 200120, China
| | - Guanjun Chen
- Department of Hematological Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Shenrui Bai
- Department of Hematological Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
| | - Xi Cao
- The First Affiliated Hospital, Department of Pathology, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Hua Wang
- Department of Hematological Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
- Correspondence:
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193
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CircCRIM1 Ameliorates Endothelial Cell Angiogenesis in Aging through the miR-455-3p/Twist1/VEGFR2 Signaling Axis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:2062885. [PMID: 36254231 PMCID: PMC9569221 DOI: 10.1155/2022/2062885] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 09/22/2022] [Indexed: 11/17/2022]
Abstract
Background. Aging leads to vascular endothelial cell senescence. Decreased expression of VEGFA and VEGFR2 plays a crucial role in impairing angiogenesis in senescent endothelial cells. Noncoding RNAs, including circular RNAs (circRNAs) and microRNAs (miRNAs), regulate endothelial cell proliferation, differentiation, apoptosis, and migration and participate in the occurrence and development of vascular diseases. However, the mechanism of noncoding RNAs in age-related vascular endothelial dysfunction remains unclear. Here, we aimed to identify the circRNA that is associated with VEGF/VEGFR2 signaling pathway activation in angiogenesis. Methods. Immunoblotting, quantitative reverse transcription-polymerase chain reaction (qRT–PCR), in vitro and in vivo experiments, luciferase assays, and chromatin immunoprecipitation followed by qRT–PCR (ChIP–qPCR) assays were performed to clarify the roles played by circCRIM1 in mouse aortic endothelial cell (MAEC) angiogenesis. Results. CircCRIM1 expression was downregulated in both an aging mouse model of lower limb ischemia in vivo and aging MAECs in vitro. Overexpressing circCRIM1 mediated through a plasmid or adeno-associated virus (AAV) reversed the downregulation of angiogenesis-related phenotype acquisition during aging. MiR-455-3p was confirmed to be a potential target of circCRIM1 through luciferase assays followed by RNA fluorescence in situ hybridization (FISH), which revealed the colocalization of circCRIM1 and miR-455-3p. CircCRIM1 was found to be a competitive endogenous RNA that sponged miR-455-3p and regulated angiogenesis-related phenotypes in MAECs. Furthermore, Twist1 was found to be downstream of miR-455-3p. A ChIP–qPCR assay showed that Twist1 promoted VEGFR2 expression by binding to the promoter region, playing a vital role in angiogenesis. Conclusions. Decreased expression of circCRIM1 impaired angiogenesis in aging via the miR-455-3p/Twist1/VEGFR2 axis. Our findings suggest that overexpression of circCRIM1 may be an effective therapeutic strategy for promoting ischemic lower limb blood flow recovery.
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Gao J, Ao YQ, Zhang LX, Deng J, Wang S, Wang HK, Jiang JH, Ding JY. Exosomal circZNF451 restrains anti-PD1 treatment in lung adenocarcinoma via polarizing macrophages by complexing with TRIM56 and FXR1. J Exp Clin Cancer Res 2022; 41:295. [PMID: 36209117 PMCID: PMC9547453 DOI: 10.1186/s13046-022-02505-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 09/29/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Although success was achieved in the therapy for a minority of advanced lung adenocarcinoma (LUAD) patients, anti-programmed death 1 (PD1) resistance was found in most LUAD patients. Here, we aimed to uncover a potential role of exosomal circular RNAs (circRNAs) in LUAD refractory to PD1 blockade. METHODS: circRNA sequencing and qRT-PCR were performed to determine the level of exosomal circRNAs in LUAD patients subsequently treated with anti-PD1. Then, the RNA pulldown, RNA immunoprecipitation, mass spectrometry, chromatin immunoprecipitation, luciferase reporter assays, flow cytometry, RNA sequencing, and in vitro and in vivo models were used to uncover the biological functions and underlying mechanism of circZNF451 in LUAD anti-PD1 treatment resistance. RESULTS circRNA sequencing and qRT-PCR identified the up-regulation of exosomal circZNF451 from LUAD patients with progressive disease (PD) compared to those with partial remission (PR) after PD1 blockade therapy. Furthermore, elevated circZNF451 was revealed to be associated with poor prognosis of LUAD patients. Additionally, exosomal circZNF451 was demonstrated to induce an anti-inflammatory phenotype in macrophages and exhaustion of cytotoxic CD8+ T cells, and enhanced TRIM56-mediated degradation of FXR1 to activate the ELF4-IRF4 pathway in macrophages. By transgenic mice, knockout of ELF4 in macrophages was found to rescue immunotherapy efficacy in tumors with high level of exosomal circZNF451. CONCLUSION Exosomal circZNF451 reshapes the tumor immune microenvironment by inducing macrophages polarization via the FXR1- ELF4-IRF4 axis and is a novel biomarker for predicting the sensitivity of PD1 blockade in LUAD.
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Affiliation(s)
- Jian Gao
- grid.413087.90000 0004 1755 3939Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032 People’s Republic of China ,grid.413087.90000 0004 1755 3939Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yong-Qiang Ao
- grid.413087.90000 0004 1755 3939Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032 People’s Republic of China ,grid.413087.90000 0004 1755 3939Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Ling-Xian Zhang
- grid.412455.30000 0004 1756 5980Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi China
| | - Jie Deng
- grid.412540.60000 0001 2372 7462Institute of Vascular Disease, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shuai Wang
- grid.413087.90000 0004 1755 3939Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032 People’s Republic of China ,grid.413087.90000 0004 1755 3939Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Hai-Kun Wang
- grid.429007.80000 0004 0627 2381CAS Key Laboratory of Molecular Virology and Immunology, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Jia-Hao Jiang
- grid.413087.90000 0004 1755 3939Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032 People’s Republic of China ,grid.413087.90000 0004 1755 3939Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jian-Yong Ding
- grid.413087.90000 0004 1755 3939Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032 People’s Republic of China ,grid.413087.90000 0004 1755 3939Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, China
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195
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Pepe G, Appierdo R, Carrino C, Ballesio F, Helmer-Citterich M, Gherardini PF. Artificial intelligence methods enhance the discovery of RNA interactions. Front Mol Biosci 2022; 9:1000205. [PMID: 36275611 PMCID: PMC9585310 DOI: 10.3389/fmolb.2022.1000205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
Understanding how RNAs interact with proteins, RNAs, or other molecules remains a challenge of main interest in biology, given the importance of these complexes in both normal and pathological cellular processes. Since experimental datasets are starting to be available for hundreds of functional interactions between RNAs and other biomolecules, several machine learning and deep learning algorithms have been proposed for predicting RNA-RNA or RNA-protein interactions. However, most of these approaches were evaluated on a single dataset, making performance comparisons difficult. With this review, we aim to summarize recent computational methods, developed in this broad research area, highlighting feature encoding and machine learning strategies adopted. Given the magnitude of the effect that dataset size and quality have on performance, we explored the characteristics of these datasets. Additionally, we discuss multiple approaches to generate datasets of negative examples for training. Finally, we describe the best-performing methods to predict interactions between proteins and specific classes of RNA molecules, such as circular RNAs (circRNAs) and long non-coding RNAs (lncRNAs), and methods to predict RNA-RNA or RNA-RBP interactions independently of the RNA type.
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Affiliation(s)
- G Pepe
- Department of Biology, University of Rome “Tor Vergata”, Rome, Italy
- *Correspondence: G Pepe, ; M Helmer-Citterich,
| | - R Appierdo
- Department of Biology, University of Rome “Tor Vergata”, Rome, Italy
| | - C Carrino
- PhD Program in Cellular and Molecular Biology, Department of Biology, University of Rome “Tor Vergata”, Rome, Italy
| | - F Ballesio
- PhD Program in Cellular and Molecular Biology, Department of Biology, University of Rome “Tor Vergata”, Rome, Italy
| | - M Helmer-Citterich
- Department of Biology, University of Rome “Tor Vergata”, Rome, Italy
- *Correspondence: G Pepe, ; M Helmer-Citterich,
| | - PF Gherardini
- Department of Biology, University of Rome “Tor Vergata”, Rome, Italy
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196
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Yu K, Jiang Z, Miao X, Yu Z, Du X, Lai K, Wang Y, Yang G. circRNA422 enhanced osteogenic differentiation of bone marrow mesenchymal stem cells during early osseointegration through the SP7/LRP5 axis. Mol Ther 2022; 30:3226-3240. [PMID: 35642253 PMCID: PMC9552913 DOI: 10.1016/j.ymthe.2022.05.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 04/27/2022] [Accepted: 05/21/2022] [Indexed: 10/18/2022] Open
Abstract
Circular RNAs (circRNAs) play an important role in biological activities, especially in regulating osteogenic differentiation of stem cells. However, no studies have reported the role of circRNAs in early osseointegration. Here we identified a new circRNA, circRNA422, from rat bone marrow mesenchymal stem cells (BMSCs) cultured on sandblasted, large-grit, acid-etched titanium surfaces. The results showed that circRNA422 significantly enhanced osteogenic differentiation of BMSCs with increased expression levels of alkaline phosphatase, the SP7 transcription factor (SP7/osterix), and lipoprotein receptor-related protein 5 (LRP5). Silencing of circRNA422 had opposite effects. There were two SP7 binding sites on the LRP5 promoter, indicating a direct regulatory relationship between SP7 and LRP5. circRNA422 could regulate early osseointegration in in vivo experiments. These findings revealed an important function of circRNA422 during early osseointegration. Therefore, circRNA422 may be a potential therapeutic target for enhancing implant osseointegration.
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Affiliation(s)
- Ke Yu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Zhiwei Jiang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Xiaoyan Miao
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Zhou Yu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Xue Du
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Kaichen Lai
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Ying Wang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Guoli Yang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China.
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Circ_0005615 contributes to the progression and Bortezomib resistance of multiple myeloma by sponging miR-185-5p and upregulating IRF4. Anticancer Drugs 2022; 33:893-902. [PMID: 36136989 DOI: 10.1097/cad.0000000000001378] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Circular RNAs (circRNAs) have been shown to play critical regulatory roles in multiple myeloma progression. Here, we aimed to explore the biologic role of circ_0005615 in multiple myeloma progression and its associated mechanism. Cell counting kit-8 assay was conducted to analyze the bortezomib resistance and proliferation of multiple myeloma cells. Cell proliferation was also analyzed by 5-Ethynyl-2'-deoxyuridine incorporation and flow cytometry assays. Cell apoptosis was assessed by flow cytometry. The interaction between microRNA-185-5p (miR-185-5p) and circ_0005615 or interferon regulatory factor 4 (IRF4) was verified by the dual-luciferase reporter and RNA immunoprecipitation (RIP) assays. A xenograft tumor model was established in non-obese diabetic/server combined immune-deficiency mice to analyze the roles of circ_0005615 in tumor growth and bortezomib resistance. Circ_0005615 was upregulated in multiple myeloma tissues and cell lines. Circ_0005615 knockdown restrained the bortezomib resistance and proliferation and induced the apoptosis of multiple myeloma cells. Circ_0005615 acted as a molecular sponge for miR-185-5p, and the antitumor effects mediated by circ_0005615 knockdown were reversed by silencing miR-185-5p. IRF4 was confirmed as a direct target of miR-185-5p, and miR-185-5p overexpression-induced antitumor influences could be counteracted by IRF4 overexpression. Circ_0005615 could positively regulate IRF4 expression by sponging miR-185-5p in multiple myeloma cells. Circ_0005615 knockdown suppressed the growth and bortezomib resistance of xenograft tumors in vivo. Circ_0005615 contributed to the malignant progression and bortezomib resistance of multiple myeloma through mediating miR-185-5p/IRF4 signaling.
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JLCRB: A unified multi-view-based joint representation learning for CircRNA binding sites prediction. J Biomed Inform 2022; 136:104231. [DOI: 10.1016/j.jbi.2022.104231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/14/2022] [Accepted: 10/14/2022] [Indexed: 11/07/2022]
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Zhu ZG, Liao GQ, Zhang JX, He CJ, Ni ZC. circVMA21 combining with TAF15 stabilizes SOCS3 mRNA to relieve septic lung injury through regulating NF-κB activation. Mol Immunol 2022; 151:183-192. [PMID: 36162226 DOI: 10.1016/j.molimm.2022.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 06/29/2022] [Accepted: 07/14/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Lung injury is a severe complication of sepsis, which brings great threats and challenges to human health. CircVMA21 has exhibited powerful anti- inflammation capacity. However, its underlying molecule mechanism remains blurry. METHODS Lipopolysaccharide (LPS) was used to treat mice and WI-38 cells to establish models of lung injury caused by sepsis. Lung injury was evaluated using HE staining. Cell apoptosis was tested by TUNEL and flow cytometry. Levels of inflammatory cytokines were detected using ELISA assay. CircVMA21 and SOCS3 expression was measured using RT-qPCR. The ROS, MDA, SOD and GSH production were monitored by commercial kits. The protein expression was examined with western blot. The correlations among circVMA21, SOCS3 and TAF15 were confirmed using RIP and RNA-pull down. RESULTS The expression of circVMA21 and SOCS3 was downregulated in LPS-induced lung injury of mice and WI-38 cells. Overexpressing circVMA21 or SOCS3 assuaged LPS-induced cell injury through repressing the levels of inflammatory factors, oxidative stress and cell apoptosis. NF-κB signaling pathway was inactivated by circVMA21 or SOCS3 overexpression. circVMA21 enhanced the stabilization of SOCS3 mRNA via interplaying with TAF15. SOCS3 knockdown destroyed the beneficial impacts of circVMA21 overexpression on LPS-induced cell injury. CONCLUSION CircVMA21 suppressed LPS-induced the levels of inflammatory factors, oxidative stress and cell apoptosis and improved LPS-induced lung injury by mediating TAF15/SOCS3/NF-κB axis.
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Affiliation(s)
- Zi-Gui Zhu
- Department of Intensive Care Unit, The Affiliated Nanhua Hospital, Hengyang Medical College, University of South China, Hengyang 421002, Hunan Province, PR China
| | - Gu-Qing Liao
- Department of Intensive Care Unit, The Affiliated Nanhua Hospital, Hengyang Medical College, University of South China, Hengyang 421002, Hunan Province, PR China
| | - Jian-Xin Zhang
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Nanhua Hospital, Hengyang Medical College, University of South China, Hengyang 421002, Hunan Province, PR China
| | - Cheng-Jian He
- Department of Intensive Care Unit, The Affiliated Nanhua Hospital, Hengyang Medical College, University of South China, Hengyang 421002, Hunan Province, PR China
| | - Zhi-Chao Ni
- Department of Thoracic and Cardiovascular Surgery, The Affiliated Nanhua Hospital, Hengyang Medical College, University of South China, Hengyang 421002, Hunan Province, PR China.
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200
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CircSEMA4B inhibits the progression of breast cancer by encoding a novel protein SEMA4B-211aa and regulating AKT phosphorylation. Cell Death Dis 2022; 13:794. [PMID: 36115854 PMCID: PMC9482637 DOI: 10.1038/s41419-022-05246-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 09/06/2022] [Accepted: 09/07/2022] [Indexed: 01/22/2023]
Abstract
PI3K/AKT signaling pathway plays an important role in regulating the tumorigenesis, recurrence, and metastasis of breast cancer (BC). In this study, we discovered a circRNA with protein-coding potential, which we named circSEMA4B. CircSEMA4B could encode a novel protein, SEMA4B-211aa. Both circSEMA4B and SEMA4B-211aa were remarkably downregulated in BC tissues and cell lines. Low expression of circSEMA4B was positively associated with TNM stage, tumor size, lymph node metastasis, and distant metastasis of BC patients. The functional investigation showed that circSEMA4B and SEMA4B-211aa could significantly inhibit the proliferation and migration of BC in vivo and in vitro. Of note, SEMA4B-211aa inhibited the generation of PIP3 by binding to p85, thereby inhibiting the phosphorylation of AKT (Thr308). CircSEMA4B inhibited the phosphorylation of AKT (Ser473) through miR-330-3p/PDCD4 axis. Taken together, circSEMA4B is a novel negative regulator of PI3K/AKT signaling pathway, providing novel mechanistic insights into the underlying mechanisms of BC.
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