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Chen XY, Yang YL, Yu Y, Chen ZY, Fan HN, Zhang J, Zhu JS. CircUGGT2 downregulation by METTL14-dependent m 6A modification suppresses gastric cancer progression and cisplatin resistance through interaction with miR-186-3p/MAP3K9 axis. Pharmacol Res 2024; 204:107206. [PMID: 38729588 DOI: 10.1016/j.phrs.2024.107206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 05/03/2024] [Accepted: 05/05/2024] [Indexed: 05/12/2024]
Abstract
Chemoresistance is a major therapeutic challenge in advanced gastric cancer (GC). N6-methyladenosine (m6A) RNA modification has been shown to play fundamental roles in cancer progression. However, the underlying mechanisms by which m6A modification of circRNAs contributes to GC and chemoresistance remain unknown. We found that hsa_circ_0030632 (circUGGT2) was a predominant m6A target of METTL14, and METTL14 knockdown (KD) reduced circUGGT2 m6A levels but increased its mRNA levels. The expression of circUGGT2 was markedly increased in cisplatin (DDP)-resistant GC cells. CircUGGT2 KD impaired cell growth, metastasis and DDP-resistance in vitro and in vivo, but circUGGT2 overexpression prompted these effects. Furthermore, circUGGT2 was validated to sponge miR-186-3p and upregulate MAP3K9 and could abolish METTL14-caused miR-186-3p upregulation and MAP3K9 downregulation in GC cells. circUGGT2 negatively correlated with miR-186-3p expression and harbored a poor prognosis in patients with GC. Our findings unveil that METTL14-dependent m6A modification of circUGGT2 inhibits GC progression and DDP resistance by regulating miR-186-3p/MAP3K9 axis.
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Affiliation(s)
- Xiao-Yu Chen
- Department of Gastroenterology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China.
| | - Yan-Ling Yang
- Department of Gastroenterology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China.
| | - Yi Yu
- Department of Gastroenterology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China.
| | - Zhao-Yu Chen
- Department of Gastroenterology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China.
| | - Hui-Ning Fan
- Department of Gastroenterology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China.
| | - Jing Zhang
- Department of Gastroenterology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China.
| | - Jin-Shui Zhu
- Department of Gastroenterology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China.
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Gao J, Chen J, Huang X, Zheng Y, Hu K. Circular RNA circ_0058123 Targets the miR-939-5p/RAC1 Pathway to Promote the Development of Colorectal Cancer. Biochem Genet 2024; 62:1485-1501. [PMID: 37642813 DOI: 10.1007/s10528-023-10485-8] [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: 03/15/2023] [Accepted: 08/06/2023] [Indexed: 08/31/2023]
Abstract
Circular RNA (circRNA) can be used as a potential target for cancer treatment. However, the biological function and potential molecular mechanism of circ_0058123 in the development of colorectal cancer (CRC) are still unclear. The expression levels of circ_0058123, microRNA-939-5p (miR-939-5p) and Rac family small GTPase 1 (RAC1) were measured by quantitative real-time polymerase chain reaction or western blot assay. 5-Ethynyl-2'-deoxyuridine (EdU) incorporation assay, transwell assay, tube formation assay and flow cytometry apoptosis assay were conducted to assess CRC cell functions. In addition, protein expression was measured with western blot assay. Dual-luciferase reporter assays and RNA immunoprecipitation assay were conducted to confirm the relationships between miR-939-5p and circ_0058123, and miR-939-5p and RAC1. In vivo CRC tumor growth experiment also were carried out to determine circ_0058123-mediatede effects on tumor formation. Our data showed that circ_0058123 and RAC1 expression were increased, but miR-939-5p was decreased in both of CRC tissues and cell lines. Circ_0058123 depletion repressed CRC cell proliferation, migration, invasion and tube formation but promoted cell apoptosis. Down-regulation of circ_0058123 could significantly suppress the CRC progression, while the addition of miR-939-5p inhibitor could reverse this effect. Circ_0058123 directly targeted miR-939-5p, and RAC1 was a target of miR-939-5p. Furthermore, RAC1 overexpression could rescue the effect of miR-939-5p on CRC development. Lastly, silence of circ_0058123 inhibited CRC tumor growth in vivo. In conclusion, circ_0058123 could promote CRC progression through regulating the miR-939-5p/RAC1 axis and may be a valuable biomarker for early diagnosis and prognosis of CRC.
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Affiliation(s)
- Jie Gao
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Anhui Medical University, No. 218, Jixi Road, Hefei, 230022, China
- Department of Gastrointestinal Surgery, Nanping First Hospital Affiliated to Fujian Medical University, Nanping, 353023, China
| | - Jun Chen
- Department of Gastrointestinal Surgery, Nanping First Hospital Affiliated to Fujian Medical University, Nanping, 353023, China
| | - Xing Huang
- Department of Gastrointestinal Surgery, Nanping First Hospital Affiliated to Fujian Medical University, Nanping, 353023, China
| | - Yiping Zheng
- Department of Respiratory and Critical Care Medicine, Nanping First Hospital Affiliated to Fujian Medical University, Nanping, 353023, China
| | - Kongwang Hu
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Anhui Medical University, No. 218, Jixi Road, Hefei, 230022, China.
- Department of Gastrointestinal Surgery, Fuyang Hospital Affiliated to Anhui Medical University, Fuyang, 236000, China.
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Qiu M, Chen Y, Zeng C. Biological functions of circRNA in regulating the hallmarks of gastrointestinal cancer (Review). Int J Oncol 2024; 64:49. [PMID: 38488023 PMCID: PMC10997371 DOI: 10.3892/ijo.2024.5637] [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: 11/04/2023] [Accepted: 02/06/2024] [Indexed: 03/19/2024] Open
Abstract
Circular RNA (circRNA) was first observed in the cytoplasm of eukaryotic cells in 1979, but it was not characterized in detail until 2012, when high‑throughput sequencing technology was more advanced and available. Consequently, the mechanism of circRNA formation and its biological function have been progressively elucidated by researchers. circRNA is abundant in eukaryotic cells and exhibits a certain degree of organization, timing and disease‑specificity. Additionally, it is poorly degradable, meeting the characteristics of an ideal clinical biomarker. In the present review, the recent research progress of circRNAs in digestive tract malignant tumors was primarily discussed. This included the roles, biological functions and clinical significance of circRNA, providing references for its research value and clinical potential in gastrointestinal cancer.
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Affiliation(s)
- Mengjun Qiu
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Youxiang Chen
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Chunyan Zeng
- Department of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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Zhang W, Yang Q, Qian D, Zhao K, Tang C, Ju S. Deregulation of circRNA hsa_circ_0009109 promotes tumor growth and initiates autophagy by sponging miR-544a-3p in gastric cancer. Gastroenterol Rep (Oxf) 2024; 12:goae008. [PMID: 38425655 PMCID: PMC10902679 DOI: 10.1093/gastro/goae008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 11/26/2023] [Accepted: 01/24/2024] [Indexed: 03/02/2024] Open
Abstract
Background Autophagy death of cancer cells is detrimental to apoptosis induced by therapeutic drugs, which promotes tumor progression to a certain extent. Increasing reports have demonstrated the regulatory role of circular RNAs (circRNAs) in autophagy. Here, we aimed to determine the role of hsa_circ_0009109 in autophagy in gastric cancer (GC). Methods The effects of hsa_circ_0009109 on autophagy were examined using quantitative real-time polymerase chain reaction (qPCR), transmission electron microscopy, Western blot, and immunofluorescence. The mechanism of hsa_circ_0009109 regulating the miR-544a-3p/bcl-2 axis was analysed using fluorescence in situ hybridization, dual-luciferase reporter, and rescue experiments. Results Functional testing indicated that hsa_circ_0009109 was significantly down-expressed in GC tissues and cell lines. A reduction in cytoplasmic-derived hsa_circ_0009109 could promote GC progression by accelerating cell proliferation, enhancing migration and invasion, inhibiting apoptosis, and accelerating the cell cycle progression. Besides, hsa_circ_0009109 was found to exert the effect of an autophagy inhibitor such as 3-Methyladenine (3-MA), which was manifested by the weakening of the immunofluorescence of LC3B and the reduction in autophagy-related proteins after overexpression of hsa_circ_0009109, while increased autophagosomes were observed after interference with hsa_circ_0009109. Subsequently, the crosstalk between hsa_circ_0009109 and miR-544a-3p/bcl-2 was verified using dual-luciferase reporter assay. The autophagy status was altered under the regulation of the hsa_circ_0009109-targeted miR-544a-3p/bcl-2 axis. Conclusions The hsa_circ_0009109 mediated a novel autophagy regulatory network through targeting the miR-544a-3p/bcl-2 axis, which may shed new light on the exploration of therapeutic targets for the clinical treatment of GC.
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Affiliation(s)
- Weiwei Zhang
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P. R. China
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P. R. China
| | - Qian Yang
- Center of Clinical Laboratory, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, P. R. China
| | - Dongchen Qian
- Department of Anesthesia and Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P. R. China
| | - Keli Zhao
- Key Laboratory of Interdisciplinary Research, Institute of Biophysics, Chinese Academy of Sciences, Beijing, P. R. China
| | - Chenxue Tang
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P. R. China
| | - Shaoqing Ju
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P. R. China
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Liu S, Wang Y, Wang T, Shi K, Fan S, Li C, Chen R, Wang J, Jiang W, Zhang Y, Chen Y, Xu X, Yu Y, Li C, Li X. CircPCNXL2 promotes tumor growth and metastasis by interacting with STRAP to regulate ERK signaling in intrahepatic cholangiocarcinoma. Mol Cancer 2024; 23:35. [PMID: 38365721 PMCID: PMC10873941 DOI: 10.1186/s12943-024-01950-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 01/29/2024] [Indexed: 02/18/2024] Open
Abstract
BACKGROUND circular RNAs (circRNAs) have been reported to exert important effects in the progression of numerous cancers. However, the functions of circRNAs in intrahepatic cholangiocarcinoma (ICC) are still unclear. METHODS circPCNXL2 (has_circ_0016956) were identified in paired ICC by circRNA microarray. Then, we assessed the biological functions of circPCNXL2 by CCK8, EdU, clone formation, transwell, wound healing assays, and xenograft models. RNA pull-down, mass spectrometry, and RNA immunoprecipitation (RIP) were applied to explore the interaction between cirrcPCNXL2 and serine-threonine kinase receptor-associated protein (STRAP). RNA pull-down, RIP and luciferase reporter assays were used to investigate the sponge functions of circPCNXL2. In the end, we explore the effects of circPCNXL2 and trametinib (a MEK1/2 inhibitor) in vivo. RESULTS circPCNXL2 was upregulated in ICC tissues and cell lines, which promoted the proliferation and metastasis of ICC in vitro and in vivo. In terms of the mechanisms, circPCNXL2 could directly bind to STRAP and induce the interaction between STRAP and MEK1/2, resulting in the tumor promotion in ICC by activation of ERK/MAPK pathways. Besides, circPCNXL2 could regulate the expression of SRSF1 by sponging miR-766-3p and subsequently facilitated the growth of ICC. Finally, circPCNXL2 could partially inhibit the anti-tumor activity of trametinib in vivo. CONCLUSION circPCNXL2 played a crucial role in the progression of ICC by interacting with STRAP to activate the ERK signaling pathway, as well as by modulating the miR-766-3p/SRSF1 axis. These findings suggest that circPCNXL2 may be a promising biomarker and therapeutic target for ICC.
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Affiliation(s)
- Shuochen Liu
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Yirui Wang
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Tianlin Wang
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Kuangheng Shi
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Shilong Fan
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Chang Li
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Ruixiang Chen
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Jifei Wang
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Wangjie Jiang
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Yaodong Zhang
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Yananlan Chen
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Xiao Xu
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Yue Yu
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China
| | - Changxian Li
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China.
| | - Xiangcheng Li
- Hepatobiliary Center, Key Laboratory of Liver Transplantation, The First Affiliated Hospital of Nanjing Medical University, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation (Nanjing Medical University), Nanjing, Jiangsu Province, China.
- Wuxi People's Hospital, Wuxi Medical Center, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Nanjing Medical University, Wuxi, Jiangsu Province, China.
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Liu J, Bai X, Zhang M, Wu S, Xiao J, Zeng X, Li Y, Zhang Z. Energy metabolism: a new target for gastric cancer treatment. Clin Transl Oncol 2024; 26:338-351. [PMID: 37477784 DOI: 10.1007/s12094-023-03278-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 07/05/2023] [Indexed: 07/22/2023]
Abstract
Gastric cancer is the fifth most common malignancy worldwide having the fourth highest mortality rate. Energy metabolism is key and closely linked to tumour development. Most important in the reprogramming of cancer metabolism is the Warburg effect, which suggests that tumour cells will utilise glycolysis even with normal oxygen levels. Various molecules exert their effects by acting on enzymes in the glycolytic pathway, integral to glycolysis. Second, mitochondrial abnormalities in the reprogramming of energy metabolism, with consequences for glutamine metabolism, the tricarboxylic acid cycle and oxidative phosphorylation, abnormal fatty acid oxidation and plasma lipoprotein metabolism are important components of tumour metabolism. Third, inflammation-induced oxidative stress is a danger signal for cancer. Fourth, patterns of signalling pathways involve all aspects of metabolic transduction, and many clinical drugs exert their anticancer effects through energy metabolic signalling. This review summarises research on energy metabolism genes, enzymes and proteins and transduction pathways associated with gastric cancer, and discusses the mechanisms affecting their effects on postoperative treatment resistance and prognoses of gastric cancer. We believe that an in-depth understanding of energy metabolism reprogramming will aid the diagnosis and subsequent treatment of gastric cancer.
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Affiliation(s)
- Jiangrong Liu
- Cancer Research Institute of Hengyang Medical School, Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, University of South China, 28 Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China
| | - Xue Bai
- Cancer Research Institute of Hengyang Medical School, Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, University of South China, 28 Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China
| | - Meilan Zhang
- Cancer Research Institute of Hengyang Medical School, Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, University of South China, 28 Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China
| | - Shihua Wu
- Department of Pathology, The Second Affiliated Hospital, Shaoyang College, Shaoyang, 422000, Hunan, People's Republic of China
| | - Juan Xiao
- Department of Head and Neck Surgery, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, People's Republic of China
| | - Xuemei Zeng
- Cancer Research Institute of Hengyang Medical School, Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, University of South China, 28 Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China
| | - Yuwei Li
- Cancer Research Institute of Hengyang Medical School, Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, University of South China, 28 Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China
| | - Zhiwei Zhang
- Cancer Research Institute of Hengyang Medical School, Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, University of South China, 28 Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China.
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Sun H, Xu F, You D. CircPI4KA Overexpression Enhances Carcinogenesis and Glycolysis Metabolism in Papillary Thyroid Carcinoma by Causing the miR-1287-5p-Mediated NRP2 Expression Elevation. Horm Metab Res 2023; 55:701-710. [PMID: 37813099 DOI: 10.1055/a-2153-7428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Circular RNAs (circRNAs) are implicated in regulating the pathogenesis of papillary thyroid carcinoma (PTC). Herein, we aimed to investigate how circRNA phosphatidylinositol 4-kinase IIIα (circPI4KA, hsa_circ_0062389) functioned as an oncogene in PTC. CircPI4KA, microRNA-1287-5p (miR-1287-5p) and Neuropilin-2 (NRP2) level detection were completed by reverse transcription-quantitative polymerase chain reaction assay. Cell proliferation was assessed through Cell Counting Kit-8 assay, colony formation assay, and EdU assay. Transwell assay was used for detecting migration and invasion abilities. Cell migration was also determined by wound healing assay. Cell apoptosis was assessed using flow cytometry assay. The protein examination was performed using western blot. Glycolysis was evaluated via commercial kits. Dual-luciferase reporter assay and RNA immunoprecipitation assay were conducted for target analysis. The role of circPI4KA in vivo was explored and analyzed via tumor xenograft assay. CircPI4KA was significantly upregulated in PTC tissues and cells. Knockdown of circPI4KA suppressed proliferation, migration, invasion, glycolysis, and induced apoptosis of PTC cells. CircPI4KA interacted with miR-1287-5p in PTC cells. The antitumor function of circPI4KA downregulation was reversed by inhibition of miR-1287-5p. The miR-1287-5p directly targeted NRP2, and circPI4KA elevated the NRP2 expression by sponging miR-1287-5p. PTC progression was impeded by miR-1287-5p via targeting NRP2. Silencing circPI4KA inhibited tumor growth in vivo through the miR-1287-5p/NRP2 axis. The collective results revealed that circPI4KA induced the upregulation of NRP2 via sponging miR-1287-5p, thus acting as a carcinogenic factor in PTC.
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Affiliation(s)
- Huanhuan Sun
- Head, Neck and Thoracic Tumor Surgery, Huangshi Central Hospital, Edong Healthcare, Affiliated Hospital of Hubei Institute of Technology, Huangshi, China
| | - Fen Xu
- Otorhinolaryngology Head and Neck Surgery, Huangshi Central Hospital, Edong Healthcare, Affiliated Hospital of Hubei Institute of Technology, Huangshi, China
| | - Dongyang You
- Head, Neck and Thoracic Tumor Surgery, Huangshi Central Hospital, Edong Healthcare, Affiliated Hospital of Hubei Institute of Technology, Huangshi, China
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Tan XY, Li YT, Li HH, Ma LX, Zeng CM, Zhang TT, Huang TX, Zhao XD, Fu L. WNT2-SOX4 positive feedback loop promotes chemoresistance and tumorigenesis by inducing stem-cell like properties in gastric cancer. Oncogene 2023; 42:3062-3074. [PMID: 37634009 DOI: 10.1038/s41388-023-02816-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 08/14/2023] [Accepted: 08/18/2023] [Indexed: 08/28/2023]
Abstract
Gastric cancer (GC) is characterized by its vigorous chemoresistance to current therapies, which is attributed to the highly heterogeneous and immature phenotype of cancer stem cells (CSCs) during tumor initiation and progression. The secretory WNT2 ligand regulates multiple cancer pathways and has been demonstrated to be a potential therapeutic target for gastrointestinal tumors; however, its role involved in gastric CSCs (GCSCs) remains unclear. Here, we found that overexpression of WNT2 enhanced stemness properties to promote chemoresistance and tumorigenicity in GCSCs. Mechanistically, WNT2 was positively regulated by its transcription factor SOX4, and in turn, SOX4 was upregulated by the canonical WNT2/FZD8/β-catenin signaling pathway to form an auto-regulatory positive feedback loop, resulting in the maintenance of GCSCs self-renewal and tumorigenicity. Furthermore, simultaneous overexpression of both WNT2 and SOX4 was correlated with poor survival and reduced responsiveness to chemotherapy in clinical GC specimens. Blocking WNT2 using a specific monoclonal antibody significantly disrupted the WNT2-SOX4 positive feedback loop in GCSCs and enhanced the chemotherapeutic efficacy when synergized with the chemo-drugs 5-fluorouracil and oxaliplatin in a GCSC-derived mouse xenograft model. Overall, this study identified a novel WNT2-SOX4 positive feedback loop as a mechanism for GCSCs-induced chemo-drugs resistance and suggested that the WNT2-SOX4 axis may be a potential therapeutic target for gastric cancer treatment.
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Affiliation(s)
- Xiang-Yu Tan
- Guangdong Province Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
| | - Yu-Ting Li
- Guangdong Province Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
- Shenzhen University-Friedrich Schiller Universität Jena Joint PhD Program in Biomedical Sciences, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
| | - Hua-Hui Li
- Guangdong Province Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
- Shenzhen University-Friedrich Schiller Universität Jena Joint PhD Program in Biomedical Sciences, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
| | - Li-Xiang Ma
- Guangdong Province Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
| | - Chui-Mian Zeng
- Department of Endocrinology and Diabetes Center, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong, China
| | - Tian-Tian Zhang
- Guangdong Province Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
| | - Tu-Xiong Huang
- Guangdong Province Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China
| | - Xiao-Di Zhao
- Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Li Fu
- Guangdong Province Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518055, Guangdong, China.
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Zhang W, Zhang L, Dong Q, Wang X, Li Z, Wang Q. Hsa_circ_0003928 regulates the progression of diabetic nephropathy through miR-136-5p/PAQR3 axis. J Endocrinol Invest 2023; 46:2103-2114. [PMID: 37017919 DOI: 10.1007/s40618-023-02061-z] [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: 08/19/2022] [Accepted: 03/06/2023] [Indexed: 04/06/2023]
Abstract
BACKGROUND Diabetic nephropathy (DN) is one of the complications of diabetes and has a high mortality, but its specific pathogenesis is not clear. In recent years, researches on the mechanism of circRNAs in DN have been proved a lot, whereas the functional mechanism of circ_0003928 in DN remains open and it must be investigated to value its important role in DN prevention. METHODS HK-2 cells were treated with high glucose (HG), normal glucose (NG) or Mannitol. Cell counting kit-8 (CCK8) and 5-ethynyl-2'-deoxyuridine (EdU) assays were performed to detect cell proliferation. Enzyme-linked immunosorbent assay (ELISA) was applied to analyze malondialdehyde (MDA) and superoxide dismutase 1 (SOD) levels. Flow cytometry and western blot were preformed to measure cell apoptosis. Real-time quantitative PCR (RT-qPCR) was used to test the levels of circ_0003928, miR-136-5p and progestin and adipoQ receptor family member 3 (PAQR3) mRNA. Western blot was executed to detect Bcl2 associated X (Bax), B cell leukemia/lymphoma 2 (Bcl2), smooth muscle (αSMA), apolipoprotein (C-IV) and PAQR3 levels. Luciferase reporter assay and RNA pull-down assay were used to analyze the target relationship between miR-136-5p and circ_0003928 or PAQR3. RESULTS Circ_0003928 and PAQR3 expression were up-regulated, whereas miR-136-5p was decreased in DN serum and HG-induced HK-2 cells. Circ_0003928 knockdown promoted cell proliferation, and inhibit cell apoptosis, oxidative stress, and fibrosis in HK-2 cells under HG condition. MiR-136-5p silencing overturned the protective effects of si-circ_0003928 on HG-induced HK-2 cells. MiR-136-5p was targeted by circ_0003928 and directly targeted PAQR3. Overexpression of PAQR3 counteracted the inhibitory functions of circ_0003928 knockdown or miR-136-5p overexpression on HG-induced HK-2 cell injury. CONCLUSION Circ_0003928 acted as a sponge of miR-136-5p to up-regulating PAQR3 expression, and then regulate the proliferation, oxidative stress, fibrosis and apoptosis in HG-induced HK-2 cells.
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Affiliation(s)
- W Zhang
- Kidney Disease and Dialysis Center, Shaanxi Provincial People's Hospital, No. 256 Youyi West Road, Beilin District, Xi'an, 710068, Shaanxi, China
| | - L Zhang
- Kidney Disease and Dialysis Center, Shaanxi Provincial People's Hospital, No. 256 Youyi West Road, Beilin District, Xi'an, 710068, Shaanxi, China
| | - Q Dong
- Kidney Disease and Dialysis Center, Shaanxi Provincial People's Hospital, No. 256 Youyi West Road, Beilin District, Xi'an, 710068, Shaanxi, China
| | - X Wang
- Kidney Disease and Dialysis Center, Shaanxi Provincial People's Hospital, No. 256 Youyi West Road, Beilin District, Xi'an, 710068, Shaanxi, China
| | - Z Li
- Kidney Disease and Dialysis Center, Shaanxi Provincial People's Hospital, No. 256 Youyi West Road, Beilin District, Xi'an, 710068, Shaanxi, China
| | - Q Wang
- Kidney Disease and Dialysis Center, Shaanxi Provincial People's Hospital, No. 256 Youyi West Road, Beilin District, Xi'an, 710068, Shaanxi, China.
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10
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Fang L, Huang H, Lv J, Chen Z, Lu C, Jiang T, Xu P, Li Y, Wang S, Li B, Li Z, Wang W, Xu Z. m5C-methylated lncRNA NR_033928 promotes gastric cancer proliferation by stabilizing GLS mRNA to promote glutamine metabolism reprogramming. Cell Death Dis 2023; 14:520. [PMID: 37582794 PMCID: PMC10427642 DOI: 10.1038/s41419-023-06049-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/30/2023] [Accepted: 08/07/2023] [Indexed: 08/17/2023]
Abstract
Abnormal 5-methylcytosine (m5C) methylation has been proved to be closely related to gastric carcinogenesis, progression, and prognosis. Dysregulated long noncoding RNAs (lncRNAs) participate in a variety of biological processes in cancer. However, to date, m5C-methylated lncRNAs are rarely researched in gastric cancer (GC). Here, we found that RNA cytosine-C(5)-methyltransferase (NSUN2) was upregulated in GC and high NSUN2 expression was associated with poor prognosis. NR_033928 was identified as an NSUN2-methylated and upregulated lncRNA in GC. Functionally, NR_033928 upregulated the expression of glutaminase (GLS) by interacting with IGF2BP3/HUR complex to promote GLS mRNA stability. Increased glutamine metabolite, α-KG, upregulated NR_033928 expression by enhancing its promoter 5-hydroxymethylcytosine (hm5C) demethylation. In conclusion, our results revealed that NSUN2-methylated NR_033928 promoted GC progression and might be a potential prognostic and therapeutic target for GC.
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Affiliation(s)
- Lang Fang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Hongxin Huang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Jialun Lv
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Zetian Chen
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Chen Lu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Tianlu Jiang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Penghui Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Ying Li
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Sen Wang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Bowen Li
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Zheng Li
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Weizhi Wang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China.
| | - Zekuan Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China.
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, 210029, Nanjing, Jiangsu Province, China.
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11
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Zhou B, Xue J, Wu R, Meng H, Li R, Mo Z, Zhai H, Chen X, Liu R, Lai G, Chen X, Li T, Zheng S. CREBZF mRNA nanoparticles suppress breast cancer progression through a positive feedback loop boosted by circPAPD4. J Exp Clin Cancer Res 2023; 42:138. [PMID: 37264406 DOI: 10.1186/s13046-023-02701-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 05/08/2023] [Indexed: 06/03/2023] Open
Abstract
BACKGROUND Breast cancer (BC) negatively impacts the health of women worldwide. Circular RNAs (circRNAs) are a group of endogenous RNAs considered essential regulatory factor in BC tumorigenesis and progression. However, the underlying molecular mechanisms of circRNAs remain unclear. METHODS Expression levels of circPAPD4, miR-1269a, CREBZF, and ADAR1 in BC cell lines and tissues were measured using bioinformatics analysis, RT-qPCR, ISH, and IHC. Cell proliferation and apoptosis were measured using CCK8, EdU staining, flow cytometry, and TUNEL assays. Pearson correlation analysis, RNA pull-down, dual-luciferase reporter, and co-immunoprecipitation assays were used to explore the correlation among circPAPD4, miR-1269a, CREBZF, STAT3, and ADAR1. Effects of circPAPD4 overexpression on tumor progression were investigated using in vivo assays. Moreover, CREBZF mRNA delivered by polymeric nanoparticles (CREBZF-mRNA-NPs) was used to examine application value of our findings. RESULTS CircPAPD4 expression was low in BC tissues and cells. Functionally, circPAPD4 inhibited proliferation and promoted apoptosis in vitro and in vivo. Mechanistically, circPAPD4 biogenesis was regulated by ADAR1. And circPAPD4 promoted CREBZF expression by competitively binding to miR-1269a. More importantly, CREBZF promoted circPAPD4 expression by suppressing STAT3 dimerization and ADAR1 expression, revealing a novel positive feedback loop that curbed BC progression. Systematic delivery of CREBZF-mRNA-NPs effectively induced CREBZF expression and activated the positive feedback loop of circPAPD4/miR-1269a/CREBZF/STAT3/ADAR1, which might suppress BC progression in vitro and in vivo. CONCLUSION Our findings firstly illustrated that circPAPD4/miR-1269a/CREBZF/STAT3/ADAR1 positive feedback loop mediated BC progression, and delivering CREBZF mRNA nanoparticles suppressed BC progression in vitro and in vivo, which might provide novel insights into therapeutic strategies for breast cancer.
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Affiliation(s)
- Boxuan Zhou
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330000, China
- Department of Breast Surgery, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, 341000, China
| | - Jinhua Xue
- Department of Physiology, School of Basic Medical Sciences, Gannan Medical University, Ganzhou, 341000, China
| | - Runxin Wu
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Hongyu Meng
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Ruixi Li
- Department of Hepatobiliary and Pancreatic Surgery, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, China
| | - Zhaohong Mo
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Hang Zhai
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Xianyu Chen
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, China
| | - Rongqiang Liu
- Department of Hepatobiliary Surgery, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Guie Lai
- Department of Breast Surgery, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, 341000, China
| | - Xiaohong Chen
- Department of Laboratory, The First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, China.
| | - Taiyuan Li
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330000, China.
| | - Shiyang Zheng
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330000, China.
- Department of Head and Neck surgery, Cancer Center of Guangzhou Medical University, Guangzhou, 510060, China.
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12
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Hou MY, Liu YK. Progress in research of exosomal circRNAs in colorectal cancer. Shijie Huaren Xiaohua Zazhi 2023; 31:172-177. [DOI: 10.11569/wcjd.v31.i5.172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/08/2023] Open
Abstract
Exosomes are lipid bilayer vesicles secreted by almost various cell types, including circRNAs, microRNAs (miRNAs), proteins, and nucleic acids. CircRNAs act as molecular sponges of miRNAs and participate in regulating gene transcription. This paper reviews the biogenesis, function, isolation, and identification of exosomal circRNAs and their role in the early diagnosis, prognosis, therapy, and drug resistance of colorectal cancer.
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Affiliation(s)
- Meng-Yuan Hou
- Graduate College of North China University of Technology, Tangshan 063200, Hebei Province, China
| | - Yan-Kun Liu
- Department of Medical Molecular Diagnosis, Tangshan People's Hospital, Tangshan Key Laboratory of Precision Medicine Testing, Tangshan 063000, Hebei Province, China
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13
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Xu J, Song J, Chen X, Huang Y, You T, Zhu C, Shen X, Zhao Y. Genomic instability-related twelve-microRNA signatures for predicting the prognosis of gastric cancer. Comput Biol Med 2023; 155:106598. [PMID: 36764156 DOI: 10.1016/j.compbiomed.2023.106598] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/26/2022] [Accepted: 01/22/2023] [Indexed: 01/25/2023]
Abstract
Gastric cancer (GC) ranks fifth among all malignant tumors globally, especially in East Asia, and has attracted extensive attention and research. MicroRNA (miRNA) modulation during genomic instability (GI) may be associated with the development and metastasis of malignant tumors. We aimed to identify GI-related miRNA signatures for the prediction of GC prognosis. We constructed a GI-related miRNA signature (GIMiSig) scheme based on The Cancer Genome Atlas (TCGA) training set (n = 389), which was later verified based on the TCGA test set (n = 194). GI-related miRNAs were identified by analyzing somatic mutation profiles and miRNA expression. A GI-related miRNA-gene co-expression network was also constructed. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) were analyzed to reveal possible biological pathways associated with GI-related miRNAs. The correlation of the GIMiSig with clinical factors of the TCGA dataset was analyzed. MiRNA mimics and inhibitors were used to evaluate the biological functions of miR-100-5p and miR-145-3p in GC cell lines AGS and MKN-45. This study identified a GI-related 12-miRNA signature for the prediction of GC prognosis. GIMiSig scores, similar to tumor stages, showed significant correlations with overall survival (OS, p < 0.05). GIMiSig showed high accuracy in predicting GC prognosis. MiR-100-5p and miR-145-3p promoted cell growth, invasion, and migration but inhibited apoptosis in GC cells. We report a reliable GI-related 12-miRNA signature for predicting GC prognosis. Furthermore, miR-100-5p and miR-145-3p may promote GC cell growth, invasion, and migration.
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Affiliation(s)
- Jingxuan Xu
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jingjing Song
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xinxin Chen
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yingpeng Huang
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Tao You
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ce Zhu
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xian Shen
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Yaping Zhao
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.
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14
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Zhao B, Zhang H, Zhao D, Liang Y, Qiao L, Liu J, Pan Y, Yang K, Liu W. circINSR Inhibits Adipogenic Differentiation of Adipose-Derived Stromal Vascular Fractions through the miR-152/ MEOX2 Axis in Sheep. Int J Mol Sci 2023; 24:ijms24043501. [PMID: 36834919 PMCID: PMC9964708 DOI: 10.3390/ijms24043501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 02/12/2023] Open
Abstract
Adipose tissue plays a crucial role in energy metabolism. Several studies have shown that circular RNA (circRNA) is involved in the regulation of fat development and lipid metabolism. However, little is known about their involvement in the adipogenic differentiation of ovine stromal vascular fractions (SVFs). Here, based on previous sequencing data and bioinformatics analysis, a novel circINSR was identified in sheep, which acts as a sponge to promote miR-152 in inhibiting the adipogenic differentiation of ovine SVFs. The interactions between circINSR and miR-152 were examined using bioinformatics, luciferase assays, and RNA immunoprecipitation. Of note, we found that circINSR was involved in adipogenic differentiation via the miR-152/mesenchyme homeobox 2 (MEOX2) pathway. MEOX2 inhibited adipogenic differentiation of ovine SVFs and miR-152 inhibited the expression of MEOX2. In other words, circINSR directly isolates miR-152 in the cytoplasm and inhibits its ability to promote adipogenic differentiation of ovine SVFs. In summary, this study revealed the role of circINSR in the adipogenic differentiation of ovine SVFs and its regulatory mechanisms, providing a reference for further interpretation of the development of ovine fat and its regulatory mechanisms.
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15
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Ding L, Lin Y, Chen X, Wang R, Lu H, Wang H, Luo W, Lu Z, Xia L, Zhou X, Li G, Cheng S. circPHF16 suppresses prostate cancer metastasis via modulating miR-581/RNF128/Wnt/β-catenin pathway. Cell Signal 2023; 102:110557. [PMID: 36503162 DOI: 10.1016/j.cellsig.2022.110557] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/01/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022]
Abstract
Circular RNAs (circRNAs) have been recognized as important regulators in tumorigenesis. However, the specific role of circRNAs in prostate cancer is still largely unknown. Here, we identified that circPHF16 was downregulated in prostate cancer (PCa) tissues compared with normal tissues. Functionally, circPHF16 restrained prostate cancer metastasis both in vivo and in vitro. Mechanistically, circPHF16 directly interacted with miR-581, leading to the downregulation of ring finger protein 128 (RNF128) and inhibiting the metastatic ability of PCa. Furthermore, circPHF16-dependent upregulation of RNF128 inactivated Wnt/β-catenin signaling. In total, our findings revealed that circPHF16 suppressed prostate cancer metastasis through the circPHF16/miR-581/Wnt/β-catenin pathways.
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Affiliation(s)
- Lifeng Ding
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Yudong Lin
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Xianjiong Chen
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Ruyue Wang
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Haohua Lu
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Huan Wang
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Wenqin Luo
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Zeyi Lu
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Liqun Xia
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Xiaobo Zhou
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Gonghui Li
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China.
| | - Sheng Cheng
- Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China.
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16
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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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17
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Wang Y, Huang X, Wang P, Zeng Y, Zhou G. The hsa_circ_0007396-miR-767-3p-CHD4 axis is involved in the progression and carcinogenesis of gastric cancer. J Gastrointest Oncol 2022; 13:2885-2902. [PMID: 36636050 PMCID: PMC9830344 DOI: 10.21037/jgo-22-1218] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 12/14/2022] [Indexed: 12/29/2022] Open
Abstract
Background Circular RNAs (circRNAs) have been linked to numerous human cancers, including gastric cancer (GC), in numerous recent investigations. The expression of circRNA and the mechanisms involved in GC are still unknown. Methods In this work, Gene Expression Omnibus 2R (GEO2R) online tool was first used to screen 6 candidates of differentially expressed circRNAs in 2 datasets, GSE83521 and GSE89143. Then, using Cancer-Specific CircRNA Database (CSCD), the structural loop diagrams of these circRNAs were generated. After combining the Circular RNA Interactome (CRI) and CSCD databases for miRNA co-prediction, a candidate circRNA-miRNA sub-network was successfully created. The expression of these miRNAs was further examined using Cytoscape software, and 2 miRNAs, miR-767-5p and miR-767-3p. Results We used GEO2R to analyze the differential expression of GSE83521 and GSE89143 datasets in GEO database. Through the construction of the structural ring diagram of CSCD database, we found that hsa_circRNA_100571, hsa_circRNA_103102, hsa_circRNA_100754, hsa_circRNA_100737, hsa_circRNA_100269, hsa_circRNA_102476, hsa_circRNA_101287 is the final candidate circRNA in GC. MiR-767-5p and miR-767-3p were found to be important miRNAs in GC. The miRNet database indicated their downstream target genes. In various studies, namely central gene screening, correlation analysis, and protein-protein interaction (PPI), we detected chromodomain helicase DNA binding protein 4 (CHD4) as a key potential candidate of hsa-mir-767-3p. Next, we conducted validation of clinical data. We included the clinical data of 100 patients with GC, and found that patients with low CHD4 expression had significantly higher OS and PFS than those with high CHD4 expression (P<0.001, P=0.005). Cox regression analysis showed that low CHD4 expression was an independent risk factor for tumor progression (P=0.001). At the same time, tumor differentiation and chemotherapy also had a certain impact on the progression of GC (all P<0.05). Therefore, CHD4 may provide a promising therapeutic target for the future treatment of GC. Conclusions We identified an important hsa_circ_0007396-miR-767-3p-CHD4 axis, which is associated with GC proliferation and carcinogenesis, and may represent a promising therapeutic target for the future cure of GC.
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Affiliation(s)
- Yantao Wang
- Guangzhou Weimi Biotechnology Co., Ltd., Guangzhou, China
| | - Xuan Huang
- Department of Laboratory Medicine, the Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Panpan Wang
- Guangzhou Weimi Biotechnology Co., Ltd., Guangzhou, China
| | - Yi Zeng
- Guangzhou Weimi Biotechnology Co., Ltd., Guangzhou, China
| | - Guozhi Zhou
- Department of Oncology, Sir Run Run Hospital, Nanjing Medical University, Nanjing, China
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18
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Liu M, Cao S, Guo Z, Wu Z, Meng J, Wu Y, Shao Y, Li Y. Roles and mechanisms of CircRNAs in ovarian cancer. Front Cell Dev Biol 2022; 10:1044897. [PMID: 36506086 PMCID: PMC9727202 DOI: 10.3389/fcell.2022.1044897] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 11/09/2022] [Indexed: 11/24/2022] Open
Abstract
Ovarian cancer (OC) is one of the female malignancies with nearly 45% 5-year survival rate. Circular RNAs (circRNAs), a kind of single-stranded non-coding RNAs, are generated from the back-splicing of cellular housekeeping noncoding RNAs and precursor messenger RNAs. Recent studies revealed that circRNAs have different biological function, including sponging miRNAs, encoding micropeptides, regulating stability of cytoplasmic mRNAs, affecting transcription and splicing, via interacting with DNA, RNA and proteins. Due to their stability, circRNAs have the potential of acting as biomarkers and treatment targets. In this review, we briefly illustrate the biogenesis mechanism and biological function of circRNAs in OC, and make a perspective of circRNAs drug targeting immune responses and signaling pathways in OC. This article can provide a systematic view into the current situation and future of circRNAs in OC.
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Affiliation(s)
- Min Liu
- Lab for Noncoding RNA and Cancer, School of Life Sciences, Shanghai University, Shanghai, China
| | - Siyu Cao
- Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Ziyi Guo
- Lab for Noncoding RNA and Cancer, School of Life Sciences, Shanghai University, Shanghai, China
| | - Zong Wu
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jiao Meng
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yong Wu
- Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, China,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China,*Correspondence: Yong Wu, ; Yang Shao, ; Yanli Li,
| | - Yang Shao
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China,*Correspondence: Yong Wu, ; Yang Shao, ; Yanli Li,
| | - Yanli Li
- Lab for Noncoding RNA and Cancer, School of Life Sciences, Shanghai University, Shanghai, China,*Correspondence: Yong Wu, ; Yang Shao, ; Yanli Li,
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19
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Xu CY, Zeng XX, Xu LF, Liu M, Zhang F. Circular RNAs as diagnostic biomarkers for gastric cancer: A comprehensive update from emerging functions to clinical significances. Front Genet 2022; 13:1037120. [PMID: 36386850 PMCID: PMC9650219 DOI: 10.3389/fgene.2022.1037120] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 10/10/2022] [Indexed: 08/30/2023] Open
Abstract
The incidence and mortality of gastric cancer ranks as a fouth leading cause of cancer death worldwide, especially in East Asia. Due to the lack of specific early-stage symptoms, the majority of patients in most developing nations are diagnosed at an advanced stage. Therefore, it is urgent to find more sensitive and reliable biomarkers for gastric cancer screening and diagnosis. Circular RNAs (circRNAs), a novel type of RNAs with covalently closed loops, are becoming a latest hot spot in the field of. In recent years, a great deal of research has demonstrated that abnormal expression of circRNAs was associated with the development of gastric cancer, and suggested that circRNA might serve as a potential biomarker for gastric cancer diagnosis. In this review, we summarize the structural characteristics, formation mechanism and biological function of circRNAs, and elucidate research progress and existing problems in early screening of gastric cancer.
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Affiliation(s)
- Chun-Yi Xu
- Zhejiang Chinese Medical University, Hangzhou, China
- Core Facility, Quzhou People’s Hospital, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou, China
| | - Xi-Xi Zeng
- Core Facility, Quzhou People’s Hospital, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou, China
- Yangtze Delta Region Institute (Quzhou), University of Electronic Science and Technology of China, Quzhou, China
| | - Li-Feng Xu
- Core Facility, Quzhou People’s Hospital, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou, China
- Yangtze Delta Region Institute (Quzhou), University of Electronic Science and Technology of China, Quzhou, China
| | - Ming Liu
- Yangtze Delta Region Institute (Quzhou), University of Electronic Science and Technology of China, Quzhou, China
- The Joint Innovation Center for Engineering in Medicine, Quzhou, China
- University of Electronic Science and Technology of China, Chengdu, China
| | - Feng Zhang
- Core Facility, Quzhou People’s Hospital, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou, China
- Yangtze Delta Region Institute (Quzhou), University of Electronic Science and Technology of China, Quzhou, China
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20
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Fang P, Jiang Q, Liu S, Gu J, Hu K, Wang Z. Circ_0002099 is a novel molecular therapeutic target for bladder cancer. Drug Dev Res 2022; 83:1890-1905. [DOI: 10.1002/ddr.22005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/27/2022] [Accepted: 09/29/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Ping Fang
- Department of Oncology The 902nd Hospital of the PLA Joint Logistics Support Force Bengbu China
| | - Qingling Jiang
- Department of Oncology The PLA Navy Anqing Hospital Anqing China
| | - Sizhong Liu
- Department of Oncology The 902nd Hospital of the PLA Joint Logistics Support Force Bengbu China
| | - Jun Gu
- Department of Oncology The 902nd Hospital of the PLA Joint Logistics Support Force Bengbu China
| | - Kai Hu
- Department of Oncology, Radiotherapy and Chemotherapy Guangde Traditional Chinese Medicine Hospital Xuancheng China
| | - Zishu Wang
- Department of Medical Oncology The First Affiliated Hospital of Bengbu Medical College Bengbu China
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21
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Ge T, Gu X, Jia R, Ge S, Chai P, Zhuang A, Fan X. Crosstalk between metabolic reprogramming and epigenetics in cancer: updates on mechanisms and therapeutic opportunities. CANCER COMMUNICATIONS (LONDON, ENGLAND) 2022; 42:1049-1082. [PMID: 36266736 PMCID: PMC9648395 DOI: 10.1002/cac2.12374] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 09/19/2022] [Accepted: 10/10/2022] [Indexed: 11/24/2022]
Abstract
Reversible, spatial, and temporal regulation of metabolic reprogramming and epigenetic homeostasis are prominent hallmarks of carcinogenesis. Cancer cells reprogram their metabolism to meet the high bioenergetic and biosynthetic demands for vigorous proliferation. Epigenetic dysregulation is a common feature of human cancers, which contributes to tumorigenesis and maintenance of the malignant phenotypes by regulating gene expression. The epigenome is sensitive to metabolic changes. Metabolism produces various metabolites that are substrates, cofactors, or inhibitors of epigenetic enzymes. Alterations in metabolic pathways and fluctuations in intermediate metabolites convey information regarding the intracellular metabolic status into the nucleus by modulating the activity of epigenetic enzymes and thus remodeling the epigenetic landscape, inducing transcriptional responses to heterogeneous metabolic requirements. Cancer metabolism is regulated by epigenetic machinery at both transcriptional and post‐transcriptional levels. Epigenetic modifiers, chromatin remodelers and non‐coding RNAs are integral contributors to the regulatory networks involved in cancer metabolism, facilitating malignant transformation. However, the significance of the close connection between metabolism and epigenetics in the context of cancer has not been fully deciphered. Thus, it will be constructive to summarize and update the emerging new evidence supporting this bidirectional crosstalk and deeply assess how the crosstalk between metabolic reprogramming and epigenetic abnormalities could be exploited to optimize treatment paradigms and establish new therapeutic options. In this review, we summarize the central mechanisms by which epigenetics and metabolism reciprocally modulate each other in cancer and elaborate upon and update the major contributions of the interplays between epigenetic aberrations and metabolic rewiring to cancer initiation and development. Finally, we highlight the potential therapeutic opportunities for hematological malignancies and solid tumors by targeting this epigenetic‐metabolic circuit. In summary, we endeavored to depict the current understanding of the coordination between these fundamental abnormalities more comprehensively and provide new perspectives for utilizing metabolic and epigenetic targets for cancer treatment.
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Affiliation(s)
- Tongxin Ge
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
| | - Xiang Gu
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
| | - Renbing Jia
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
| | - Shengfang Ge
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
| | - Peiwei Chai
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
| | - Ai Zhuang
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
| | - Xianqun Fan
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
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22
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CircCSDE1 Regulates Proliferation and Differentiation of C2C12 Myoblasts by Sponging miR-21-3p. Int J Mol Sci 2022; 23:ijms231912038. [PMID: 36233353 PMCID: PMC9570022 DOI: 10.3390/ijms231912038] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/21/2022] [Accepted: 10/03/2022] [Indexed: 11/16/2022] Open
Abstract
The growth and development of skeletal muscle is regulated by many factors, and recent studies have shown that circular RNAs (circRNAs) can participate in this process. The model of porcine skeletal muscle injury was constructed to search for circRNAs that can regulate the growth and development of skeletal muscle in pigs. Using whole-transcriptome sequencing and bioinformatics analysis, a novel circRNA (circCSDE1) was screened out, which is highly expressed in skeletal muscle. Functional studies in C2C12 cells demonstrated that circCSDE1 could promote proliferation and inhibit myoblast differentiation, while opposing changes were observed by circCSDE1 knockdown. A dual-luciferase reporter assay revealed that circCSDE1 directly targeted miR-21-3p to regulate the expression of the downstream target gene (Cyclin-dependent kinase 16, CDK16). Moreover, miR-21-3p could inhibit proliferation and promote myoblast differentiation in C2C12 cells, opposite with the effects of circCSDE1. Additionally, the rescue experiments offered further evidence that circCSDE1 and its target, miR-21-3p, work together to regulate myoblast proliferation and differentiation. This study provides a theoretical basis for further understanding the regulatory mechanisms of circRNAs.
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23
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Zeng X, Xiao J, Bai X, Liu Y, Zhang M, Liu J, Lin Z, Zhang Z. Research progress on the circRNA/lncRNA-miRNA-mRNA axis in gastric cancer. Pathol Res Pract 2022; 238:154030. [PMID: 36116329 DOI: 10.1016/j.prp.2022.154030] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 07/14/2022] [Accepted: 07/16/2022] [Indexed: 01/19/2023]
Abstract
Gastric cancer is one of the most common malignant tumours worldwide. Genetic and epigenetic alterations are key factors in gastric carcinogenesis and drug resistance to chemotherapy. Competing endogenous RNA (ceRNA) regulation models have defined circRNA/lncRNA as miRNA sponges that indirectly regulate miRNA downstream target genes. The ceRNA regulatory network is related to the malignant biological behaviour of gastric cancer. The circRNA/lncRNA-miRNA-mRNA axis may be a marker for the early diagnosis and prognosis of gastric cancer and a potential therapeutic target for gastric cancer. Exosomal ncRNAs play an important role in gastric cancer and are expected to be ideal biomarkers for the diagnosis, prognosis, and treatment of gastric cancer. This review summarizes the specific ceRNA regulatory network (circRNA/lncRNA-miRNA-mRNA) discovered in gastric cancer in recent years, which may provide new ideas or strategies for early clinical diagnosis, further development, and application.
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Affiliation(s)
- Xuemei Zeng
- Cancer Research Institute of Hengyang Medical School, University of South China; Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, Hengyang, Hunan 421001, China
| | - Juan Xiao
- Department of Otorhinolaryngology, The Second Affiliated Hospital, Hengyang Medical School,University of South China, Hengyang 421001, China
| | - Xue Bai
- Cancer Research Institute of Hengyang Medical School, University of South China; Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, Hengyang, Hunan 421001, China
| | - Yiwen Liu
- Cancer Research Institute of Hengyang Medical School, University of South China; Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, Hengyang, Hunan 421001, China
| | - Meilan Zhang
- Cancer Research Institute of Hengyang Medical School, University of South China; Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, Hengyang, Hunan 421001, China
| | - Jiangrong Liu
- Cancer Research Institute of Hengyang Medical School, University of South China; Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, Hengyang, Hunan 421001, China
| | - Zixuan Lin
- Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Zhiwei Zhang
- Cancer Research Institute of Hengyang Medical School, University of South China; Key Laboratory of Cancer Cellular and Molecular Pathology in Hunan Province, Hengyang, Hunan 421001, China.
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24
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Zhang M, Jin M, Gao Z, Yu W, Zhang W. High COL10A1 expression potentially contributes to poor outcomes in gastric cancer with the help of LEF1 and Wnt2. J Clin Lab Anal 2022; 36:e24612. [PMID: 35929139 PMCID: PMC9459277 DOI: 10.1002/jcla.24612] [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: 03/24/2022] [Revised: 05/15/2022] [Accepted: 06/13/2022] [Indexed: 11/14/2022] Open
Abstract
Background COL10A1 is a secreted, short‐chain collagen found in several types of cancer. Studies have shown that COL10A1 aberrant expression is considered an oncogenic factor. However, its underlying mechanisms and regulation of gastric cancer remain undefined. Methods The data on the expression of COL10A1, clinicopathological characteristics, and outcome of patients with GC were obtained from The Cancer Genome Atlas. The ALGGEN‐PROMO database defined the related transcription factors. Quantitative real‐time reverse transcription‐polymerase chain reaction and western blotting analysis were used to identify the differential expression levels of COL10A1 and related transcription factors. Results We found that high COL10A1 expression is an independent risk factor for gastric cancer. Upregulation of LEF1 and Wnt2 was also observed in gastric cancer, suggesting a potential correlation between LEF1/COL10A1 regulation in the Wnt2 signaling pathway. Conclusion High COL10A1 expression may contribute to poor outcomes via upregulation of LEF1 and Wnt2 in gastric cancer.
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Affiliation(s)
- Miaozun Zhang
- Department of Gastrointestinal Surgery, The Affiliated Lihuili Hospital, Ningbo University, Ningbo, China
| | - Ming Jin
- Department of Radiation Oncology, The Affiliated Lihuili Hospital, Ningbo University, Ningbo, China
| | - Zhiqiang Gao
- Department of Gastroenterology, The Affiliated Lihuili Hospital, Ningbo University, Ningbo, China
| | - Weiming Yu
- Department of Gastrointestinal Surgery, The Affiliated Lihuili Hospital, Ningbo University, Ningbo, China
| | - Wei Zhang
- Department of Gastroenterology, The HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China
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25
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Lv Y, Li X, Zhang H, Zou F, Shen B. CircRNA expression profiles in deltamethrin-susceptible and -resistant Culex pipiens pallens (Diptera: Culicidae). Comp Biochem Physiol B Biochem Mol Biol 2022; 261:110750. [PMID: 35513264 DOI: 10.1016/j.cbpb.2022.110750] [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: 02/25/2022] [Revised: 04/18/2022] [Accepted: 04/21/2022] [Indexed: 11/18/2022]
Abstract
The excessive and improper application of insecticides has caused the evolution of resistance in many mosquito populations, including Culex pipiens pallens (L.). Deltamethrin, a representative pyrethroid insecticide, is the most widely used synthetic insecticide in mosquito-borne control field. Comprehensively identifying genes and regulators associated with deltamethrin resistance and elucidating the manner in which they regulate this process is critical for effective control of mosquitoes. CircRNAs are the upstream regulatory factors of miRNAs and mRNAs, which play a role via the competitive endogenous RNA mechanism. In this study, we used high-throughput circRNA sequencing to identify circRNAs that were expressed differently in deltamethrin-susceptible strain (DS strain) and -resistant strain (DR strain) mosquitoes [NCBI Sequence Read Archive (SRA) database accession number: PRJNA714543]. We detected a total of 12,816 significantly differentially expressed circRNAs (DE-circRNAs). Among them, 6769 circRNAs were up-regulated and 6047 circRNAs were down-regulated in the DR strain compared to DS strain. Among the DE-circRNAs, we further screened that supercont3.352:252102|253283 was significantly over-expressed in the DR strain through qPCR multiple verification (P < 0.05).We used the divergent primer to amplify the rolling circle product and obtained the full-length sequence of supercont3.352:252102|253283 (GeneBank accession number: MW729338). Through software comparison and bioinformatics analysis, we predicted that supercont3.352:252102|253283 might participate in deltamethrin resistance by sponging cpp-miR-1671 and blocking its inhibition on CYP4G15.We further found that the expression of cpp-miR-1671 was significantly lower in DR strain (P < 0.01), while the expression of CYP4G15 was significantly higher in DR strain (P < 0.05).Taken together, the present study provided the most comprehensive circRNA expression profile of mosquitoes, and suggested that supercont3.352:252102|253283 might participate in deltamethrin resistance through the supercont3.352:252102|253283/cpp-miR-1671/CYP4G15 pathway.
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Affiliation(s)
- Yuan Lv
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xixi Li
- Department of Pathogen Biology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Hongbo Zhang
- Department of Pathogen Biology, Nanjing Medical University, Nanjing, China
| | - Feifei Zou
- Department of Pathogen Biology, Nanjing University of Chinese Medicine, Nanjing, China.
| | - Bo Shen
- Department of Pathogen Biology, Nanjing Medical University, Nanjing, China.
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26
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Yang F, Peng ZX, Ji WD, Yu JD, Qian C, Liu JD, Fang GE. LncRNA CCAT1 Upregulates ATG5 to Enhance Autophagy and Promote Gastric Cancer Development by Absorbing miR-140-3p. Dig Dis Sci 2022; 67:3725-3741. [PMID: 34417924 DOI: 10.1007/s10620-021-07187-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 07/20/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Long noncoding RNA colon cancer-associated transcript 1 (LncRNA CCAT1) is highly expressed in gastric cancer tissues and plays a role in autophagy. However, the underlying mechanism still needs to be further clarified. OBJECTIVE To study the role of LncRNA CCAT1 in regulating autophagy of gastric cancer cells, analyze its downstream targets, and elucidate the mechanism. METHODS qPCR detected the expression of LncRNA CCAT1 in gastric cancer cells. The proliferation, migration, and invasion ability of LncRNA CCAT1 and the expression level of autophagy-related proteins in gastric cancer cells were detected. Bioinformatics method predicted the downstream targets of LncRNA CCAT1, and they were verified by dual-luciferase assay. The relationship between LncRNA CCAT1, miR-140, and ATG5 was verified by co-transfection, and the expression levels of ATG5 and ATG5-ATG12 complex proteins were detected. Finally, the role of LncRNA CCAT1 in vivo was confirmed by gastric cancer transplantation model. RESULTS LncRNA CCAT1 was highly expressed in gastric cancer cells. LncRNA CCAT1 can promote the proliferation, migration, invasion, and autophagy activity of gastric cancer cells. LncRNA CCAT1 can bind to miR-140-3p and regulate its expression, while miR-140-3p further regulates the expression of ATG5. Overexpression of LncRNA CCAT1 can promote tumor growth in nude mice. After LncRNA CCAT1 silencing, the positive expression rate of ATG5 in nude mice was low. CONCLUSION LncRNA CCAT1 may inhibit the expression of miR-140-3p by sponge adsorption, thus weakening its inhibitory effect on ATG5. Eventually, gastric cancer cells were more prone to autophagy under the pressure of stress.
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Affiliation(s)
- Feng Yang
- Department of General Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, 201805, People's Republic of China
| | - Zhang-Xiao Peng
- Molecular Tumor Laboratory, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, 201805, People's Republic of China
| | - Wei-Dan Ji
- Molecular Tumor Laboratory, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, 201805, People's Republic of China
| | - Ju-Dian Yu
- Department of General Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, 201805, People's Republic of China
| | - Chen Qian
- Department of General Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, 201805, People's Republic of China
| | - Jian-Dong Liu
- Department of General Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, 201805, People's Republic of China
| | - Guo-En Fang
- Department of General Surgery, Changhai Hospital, Second Military Medical University, 68 Changhai Road, Yangpu District, Shanghai, 200433, People's Republic of China.
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27
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Li H, Chai L, Ding Z, He H. CircCOL1A2 Sponges MiR-1286 to Promote Cell Invasion and Migration of Gastric Cancer by Elevating Expression of USP10 to Downregulate RFC2 Ubiquitination Level. J Microbiol Biotechnol 2022; 32:938-948. [PMID: 35791074 PMCID: PMC9628928 DOI: 10.4014/jmb.2112.12044] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 04/29/2022] [Accepted: 05/07/2022] [Indexed: 12/15/2022]
Abstract
Gastric cancers (GC) are generally malignant tumors, occurring with high incidence and threatening public health around the world. Circular RNAs (circRNAs) play crucial roles in modulating various cancers, including GC. However, the functions of circRNAs and their regulatory mechanism in colorectal cancer (CRC) remain largely unknown. This study focuses on both the role of circCOL1A2 in CRC progression as well as its downstream molecular mechanism. Quantitative polymerase chain reaction (qPCR) and western blot were adopted for gene expression analysis. Functional experiments were performed to study the biological functions. Fluorescence in situ hybridization (FISH) and subcellular fraction assays were employed to detect the subcellular distribution. Luciferase reporter, RNA-binding protein immunoprecipitation (RIP), co-immunoprecipitation (Co-IP), RNA pull-down, and immunofluorescence (IF) and immunoprecipitation (IP) assays were used to explore the underlying mechanisms. Our results found circCOL1A2 to be not only upregulated in GC cells, but that it also propels the migration and invasion of GC cells. CircCOL1A2 functions as a competing endogenous RNA (ceRNA) by sequestering microRNA-1286 (miR-1286) to modulate ubiquitin-specific peptidase 10 (USP10), which in turn spurs the migration and invasion of GC cells by regulating RFC2. In sum, CircCOL1A2 sponges miR-1286 to promote cell invasion and migration of GC by elevating the expression of USP10 to downregulate the level of RFC2 ubiquitination. Our study offers a potential novel target for the early diagnosis and treatment of GC.
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Affiliation(s)
- Hang Li
- Gastroenterology and Hepatobiliary Surgery, The Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, Zhejiang, P.R.China,Corresponding author Phone: +13456888058 Fax: +0571-88303631 E-mail:
| | - Lixin Chai
- Gastroenterology and Hepatobiliary Surgery, The Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, Zhejiang, P.R.China
| | - Zujun Ding
- Gastroenterology and Hepatobiliary Surgery, The Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, Zhejiang, P.R.China
| | - Huabo He
- Gastroenterology and Hepatobiliary Surgery, The Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, Zhejiang, P.R.China
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28
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Guo Z, Zhang Y, Xu W, Zhang X, Jiang J. Engineered exosome-mediated delivery of circDIDO1 inhibits gastric cancer progression via regulation of MiR-1307-3p/SOCS2 Axis. J Transl Med 2022; 20:326. [PMID: 35864511 PMCID: PMC9306104 DOI: 10.1186/s12967-022-03527-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: 04/27/2022] [Accepted: 07/08/2022] [Indexed: 01/15/2023] Open
Abstract
Background Our previous study has identified a novel circRNA (circDIDO1) that is down-regulated in gastric cancer (GC) and significantly inhibits GC progression. The purpose of this study is to identify the molecular mechanism for circDIDO1 and to evaluate the therapeutic effect of circDIDO1 in GC. Methods By combining bioinformatic analysis with RNA sequencing data, we predicted the potential target of circDIDO1 and further validated the regulatory mechanisms for its tumor suppressor function in GC. RIP assay, luciferase reporter assay and in vitro cell function assays were performed to analyze circDIDO1-regulated downstream target genes. For the therapeutic study, circDIDO1-loaded, RGD-modified exosomes (RGD-Exo-circDIDO1) were constructed and its anti-tumor efficacy and biological safety were evaluated in vitro and in vivo. Results CircDIDO1 inhibited GC progression by regulating the expression of the signal transducer inhibitor SOSC2 through sponging miR-1307-3p. Overexpression of circDIDO1 or SOSC2 antagonized the oncogenic role of miR-1307-3p. RGD-Exo-circDIDO1 could efficiently deliver circDIDO1 to increase SOCS2 expression in GC cells. Compared with PBS and RGD-Exo-vector treatment, RGD-Exo-circDIDO1 treatment significantly inhibited the proliferation, migration and invasion of GC cells while promoted cell apoptosis. The therapeutic efficacy of RGD-Exo-circDIDO1 was further confirmed in a mouse xenograft tumor model. In addition, major tissues including the heart, liver, spleen, lungs and kidneys showed no obvious histopathological abnormalities or lesions in the RGD-Exo-circDIDO1 treated group. Conclusion Our findings revealed that circDIDO1 suppressed the progression of GC via modulating the miR-1307-3p/SOSC2 axis. Systemic administration of RGD modified, circDIDO1 loaded exosomes repressed the tumorigenicity and aggressiveness of GC both in vitro and in vivo, suggesting that RGD-Exo-circDIDO1 could be used as a feasible nanomedicine for GC therapy. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-022-03527-z.
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Affiliation(s)
- Zhen Guo
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China.,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China
| | - Yu Zhang
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China.,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China
| | - Wenrong Xu
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China.,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China
| | - Xu Zhang
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China. .,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China.
| | - Jiajia Jiang
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Suzhou, 215600, Jiangsu, China. .,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, Jiangsu, China.
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29
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Gao Z, Hu L, Chen F, He C, Hu B, Wang X. Hsa_circular RNA_0001013 exerts oncogenic effects in gastric cancer through the microRNA-136-TWSG1 axis. Am J Transl Res 2022; 14:4948-4963. [PMID: 35958507 PMCID: PMC9360872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Gastric cancer (GC) is one of the leading malignancies of the digestive system. Circular RNAs (circRNAs) are well-established to play critical regulatory roles in GC development. The current study sought to explore the effects and regulatory mechanism of circ_0001013 in the course of GC. METHODS First, differential circRNAs and related mechanisms in GC were predicted by microarray analysis. Circ_0001013, microRNA (miR)-136, and TWSG1 expression patterns were subsequently detected in GC clinical samples and cells using RT-qPCR. The relationship among circ_0001013, miR-136, and TWSG1 was further assessed by dual-luciferase reporter assay, biotin-coupled probe pull-down assay, and biotin-coupled miRNA capture. Based on gain- and loss-of-function assays, GC cell proliferation, migration, invasion, and the cell cycle and apoptosis were also measured by 5-ethynyl-2'-deoxyuridine (EdU) assay, scratch test, Transwell assay, and flow cytometry, respectively. Moreover, the effect of circ_0001013 on tumor growth was detected by tumor xenografting in nude mice. RESULTS Circ_0001013 was predicted to be up-regulated in GC by microarray profiling, which was confirmed by RT-qPCR detection in GC tissues and cells. miR-136 was poorly expressed, and TWSG1 was highly expressed in GC tissues. Mechanistically, circ_0001013 bound to miR-136, which negatively targeted TWSG1 in the GC cells. Silencing circ_0001013 or TWSG1 or over-expressing miR-136 led to decreased GC cell proliferation, migration, invasion, and cell cycle arrest and enhanced apoptosis. Furthermore, silencing circ_0001013 resulted in diminished TWSG1 expression and inhibited transplanted tumor growth in the nude mice. CONCLUSION Collectively, our findings indicated that circ_0001013 increased TWSG1 expression by binding to miR-136, thereby exerting oncogenic effects in GC.
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Affiliation(s)
- Zhaofeng Gao
- Faculty of Graduate Studies, Zhejiang Chinese Medical UniversityHangzhou 310053, Zhejiang, P. R. China
- Department of Surgery, The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000, Zhejiang, P. R. China
| | - Lingyu Hu
- Department of Surgery, The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000, Zhejiang, P. R. China
| | - Fei Chen
- Department of Surgery, The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000, Zhejiang, P. R. China
| | - Chunhua He
- Department of Surgery, The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000, Zhejiang, P. R. China
| | - Biwen Hu
- Department of Surgery, The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000, Zhejiang, P. R. China
| | - Xiaoguang Wang
- Faculty of Graduate Studies, Zhejiang Chinese Medical UniversityHangzhou 310053, Zhejiang, P. R. China
- Department of Surgery, The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000, Zhejiang, P. R. China
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Gao Y, Zhou Y, Wei L, Feng Z, Chen Y, Liu P, Peng Y, Huang Q, Gao L, Liu Y, Han Y, Shen H, Cai C, Zeng S. Hsa_Circ_0066351 Acts as a Prognostic and Immunotherapeutic Biomarker in Colorectal Cancer. Front Immunol 2022; 13:927811. [PMID: 36405685 PMCID: PMC9667793 DOI: 10.3389/fimmu.2022.927811] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 06/15/2022] [Indexed: 11/05/2022] Open
Abstract
Circular RNA (circRNA), a novel class of non-coding RNA, has been reported in various diseases, especially in tumors. However, the key signatures of circRNA-competitive endogenous RNA (ceRNA) network are largely unclear in colorectal cancer (CRC). We first characterized circRNAs profile by using circRNA-seq analysis from real-word dataset. The expression level of hsa_circ_0066351 in CRC tissues and cell lines was detected by quantitative real-time PCR. Then, cell proliferation assay was used to confirm the proliferation function of hsa_circ_0066351. Next, Cytoscape was used to construct circRNA–miRNA–mRNA networks. Last but not least, the landscape of hsa_circ_0066351–miRNA–mRNA in CRC had been investigated in the bulk tissue RNA-Seq level and single-cell Seq level. We proved that hsa_circ_0066351 was significantly downregulated in CRC cell lines and tissues (P < 0.001), and was negatively associated with distant metastasis (P < 0.01). Significantly, the expression of hsa_circ_0066351 was associated with better survival in patients with CRC. Function assays showed that hsa_circ_0066351 could inhibit CRC cells proliferation. In addition, a ceRNA network, including hsa_circ_0066351, two miRNAs, and ten mRNAs, was constructed. Our analyses showed that these ten mRNAs were consistently downregulated in pan-cancer and enriched in tumor suppressive function. A risk score model constructed by these ten downstream genes also indicated that they were related to the prognosis and immune response in CRC. In conclusion, we demonstrated that a novel circRNA (hsa_circ_0066351) inhibited CRC proliferation, and revealed a potential prognostic and immunotherapeutic biomarker in CRC.
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Affiliation(s)
- Yan Gao
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
| | - Yulai Zhou
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
| | - Le Wei
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
| | - Ziyang Feng
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
| | - Yihong Chen
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
| | - Ping Liu
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
| | - Yinghui Peng
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
| | - Qiaoqiao Huang
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
| | - Le Gao
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
| | - Yongting Liu
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
| | - Ying Han
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
| | - Hong Shen
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Changjing Cai
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Changjing Cai, ; Shan Zeng,
| | - Shan Zeng
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
- Key Laboratory for Molecular Radiation Oncology of Hunan Province, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Changjing Cai, ; Shan Zeng,
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Circ_0110940 Exerts an Antiapoptotic and Pro-Proliferative Effect in Gastric Cancer Cells via the miR-1178-3p/SLC38A6 Axis. JOURNAL OF ONCOLOGY 2022; 2022:3494057. [PMID: 35813866 PMCID: PMC9262524 DOI: 10.1155/2022/3494057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/02/2022] [Accepted: 06/08/2022] [Indexed: 12/14/2022]
Abstract
Circular RNAs (circRNAs) are essential regulators in human cancers, including gastric cancer, by the miRNA/mRNA axis. A previous study identified the upregulation of circ_0110940 in human gastric cancer tissues. The present study performed in vitro assays to reveal the functions of circ_0110940 and its downstream miRNA/mRNA axis in gastric cancer cells. Traditional proliferation and apoptosis assays including colony formation, EdU staining, and Annexin V-PI staining assays were conducted. A luciferase reporter assay was performed to assess the binding between miR-1178-3p and circ_0110940 or SLC38A. We found the significant upregulation of circ_0110940 in human gastric cancer cells AGS and MKN45. Circ_0110940 was a stable circRNA and exerted an antiproliferative and proapoptotic effect in AGS and MKN45. Circ_0110940 binded with miR-1178-3p, which further targeted SLC38A6 3′UTR. Circ_0110940 degraded miR-1178-3p, and miR-1178-3p degraded SLC38A6. Thus, circ_0110940 has a positive effect on SLC38A6 expression. Furthermore, SLC38A6 rescued the effects of circ_0110940 knockdown on gastric cancer cell proliferation and apoptosis. In conclusion, circ_0110940 exerted an antiapoptotic and pro-proliferative effect in gastric cancer cells via the miR-1178-3p/SLC38A6 axis, which may provide basis for the targeted therapy of gastric cancer.
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Kong S, Tian S, Wang Z, Shi Y, Zhang J, Zhuo H. Circular RNA circPFKP suppresses the proliferation and metastasis of gastric cancer cell via sponging miR-644 and regulating ADAMTSL5 expression. Bioengineered 2022; 13:12326-12337. [PMID: 35587154 PMCID: PMC9275984 DOI: 10.1080/21655979.2022.2073001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
The treatment of gastric cancer (GC) is extremely challenging; however, the specific pathogenesis of GC remains unclear. Circular RNAs (CircRNAs) are non-coding RNAs that can regulate gene expression both transcriptionally and post-transcriptionally. However, little is known about the circRNAs that are important in the progression of GC. This study identified significantly dysregulated circRNAs by analyzing gastric cancer patients and normal control tissues. The target gene was predicted using online bioinformatics tools and verified using RNA pull-down and luciferase reporter assays. Quantitative real-time polymerase chain reaction (qRT-PCR) and western blotting were used to evaluate gene and protein expression. The malignant behavior of GC cells was determined using 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay, wound healing assay, Transwell invasion assay, and flow cytometry. CircPFKP is downregulated in GC tissues, and overexpression of circPFKP inhibits malignant behavior in GC cells. Bioinformatics predicted that circPFKP could bind to miR-644, and miR-644 could target disintegrin-like and metalloprotease domain-containing thrombospondin type 1 motif-like 5 (ADAMTSL5). Overexpression of circPFKP enhances the expression of ADAMTSL5 by decreasing the expression of miR-644 to suppress the growth of xenograft GC tumors in vivo and in vitro. In conclusion, the circPFKP/miR-644/ADAMTSL5 regulatory pathway inhibited the malignant progression of GC. These findings may extend our understanding of the effects of circRNAs on cancer development and provide novel targets for the diagnosis of GC.
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Affiliation(s)
- Shuai Kong
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Shubo Tian
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Zhu Wang
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Yulong Shi
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Jizhun Zhang
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Hongqing Zhuo
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
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Zhang Y, Zhang X, Xu Y, Fang S, Ji Y, Lu L, Xu W, Qian H, Liang ZF. Circular RNA and Its Roles in the Occurrence, Development, Diagnosis of Cancer. Front Oncol 2022; 12:845703. [PMID: 35463362 PMCID: PMC9021756 DOI: 10.3389/fonc.2022.845703] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 03/14/2022] [Indexed: 12/19/2022] Open
Abstract
Circular RNAs (circRNAs) are non-coding single-stranded covalently closed circular RNA, mainly produced by reverse splicing of exons of precursor mRNAs (pre-mRNAs). The characteristics of high abundance, strong specificity, and good stability of circRNAs have been discovered. A large number of studies have reported its various functions and mechanisms in biological events, such as the occurrence and development of cancer. In this review, we focus on the classification, characterization, biogenesis, functions of circRNAs, and the latest advances in cancer research. The development of circRNAs as biomarkers in cancer diagnosis and treatment also provides new ideas for studying circRNAs research.
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Affiliation(s)
- Yue Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Xinyi Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Yumeng Xu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Shikun Fang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Ying Ji
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Ling Lu
- Child Healthcare Department, The Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Wenrong Xu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Hui Qian
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Zhao Feng Liang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
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Liu H, Xue Q, Cai H, Jiang X, Cao G, Chen T, Chen Y, Wang D. RUNX3-mediated circDYRK1A inhibits glutamine metabolism in gastric cancer by up-regulating microRNA-889-3p-dependent FBXO4. J Transl Med 2022; 20:120. [PMID: 35272674 PMCID: PMC8908664 DOI: 10.1186/s12967-022-03286-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 01/31/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Targeting glutamine metabolism is previously indicated as a potential and attractive strategy for gastric cancer (GC) therapy. However, the underlying mechanisms responsible for the modification of glutamine metabolism in GC cells have not been fully elucidated. Accordingly, the current study sought to investigate the physiological mechanisms of RUNX3-mediated circDYRK1A in glutamine metabolism of GC. METHODS Firstly, GC tissues and adjacent normal tissues were obtained from 50 GC patients to determine circDYRK1A expression in GC tissues. Next, the binding affinity among RUNX3, circDYRK1A, miR-889-3p, and FBXO4 was detected to clarify the mechanistic basis. Moreover, GC cells were subjected to ectopic expression and knockdown manipulations of circDYRK1A, miR-889-3p, and/or FBXO4 to assay GC cell malignant phenotypes, levels of glutamine, glutamic acid, and α-KG in cell supernatant and glutamine metabolism-related proteins (GLS and GDH). Finally, nude mice were xenografted with GC cells to explore the in vivo effects of circDYRK1A on the tumorigenicity and apoptosis. RESULTS circDYRK1A was found to be poorly expressed in GC tissues. RUNX3 was validated to bind to the circDYRK1A promoter, and circDYRK1A functioned as a miR-889-3p sponge to up-regulate FBXO4 expression. Moreover, RUNX3-upregulated circDYRK1A reduced levels of glutamine, glutamic acid, and α-KG, and protein levels of GLS and GDH, and further diminished malignant phenotypes in vitro. Furthermore, in vivo experimentation substantiated that circDYRK1A inhibited the tumorigenicity and augmented the apoptosis in GC. CONCLUSION In conclusion, these findings highlighted the significance and mechanism of RUNX3-mediated circDYRK1A in suppressing glutamine metabolism in GC via the miR-889-3p/FBXO4 axis.
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Affiliation(s)
- Haofeng Liu
- Department of General Surgery, Tumor Hospital Affiliated to Nantong University & Nantong Tumor Hospital, No. 30, Tongyang North Road, Pingchao Town, Tongzhou District, Nantong, 226361, Jiangsu, People's Republic of China
| | - Qiu Xue
- Department of General Surgery, Tumor Hospital Affiliated to Nantong University & Nantong Tumor Hospital, No. 30, Tongyang North Road, Pingchao Town, Tongzhou District, Nantong, 226361, Jiangsu, People's Republic of China
| | - Hongzhou Cai
- Department of Urology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research &, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, 210009, People's Republic of China
| | - Xiaohui Jiang
- Department of General Surgery, Tumor Hospital Affiliated to Nantong University & Nantong Tumor Hospital, No. 30, Tongyang North Road, Pingchao Town, Tongzhou District, Nantong, 226361, Jiangsu, People's Republic of China
| | - Guangxin Cao
- Department of General Surgery, Tumor Hospital Affiliated to Nantong University & Nantong Tumor Hospital, No. 30, Tongyang North Road, Pingchao Town, Tongzhou District, Nantong, 226361, Jiangsu, People's Republic of China
| | - Tie Chen
- Department of General Surgery, Tumor Hospital Affiliated to Nantong University & Nantong Tumor Hospital, No. 30, Tongyang North Road, Pingchao Town, Tongzhou District, Nantong, 226361, Jiangsu, People's Republic of China
| | - Yuan Chen
- Department of General Surgery, Tumor Hospital Affiliated to Nantong University & Nantong Tumor Hospital, No. 30, Tongyang North Road, Pingchao Town, Tongzhou District, Nantong, 226361, Jiangsu, People's Republic of China.
| | - Ding Wang
- Department of General Surgery, Tumor Hospital Affiliated to Nantong University & Nantong Tumor Hospital, No. 30, Tongyang North Road, Pingchao Town, Tongzhou District, Nantong, 226361, Jiangsu, People's Republic of China.
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Circ-PKD2 promotes Atg13-mediated autophagy by inhibiting miR-646 to increase the sensitivity of cisplatin in oral squamous cell carcinomas. Cell Death Dis 2022; 13:192. [PMID: 35220397 PMCID: PMC8882170 DOI: 10.1038/s41419-021-04497-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 11/03/2021] [Accepted: 12/20/2021] [Indexed: 12/16/2022]
Abstract
Autophagy is an evolutionally conserved catabolic process that degrades cells to maintain homeostasis. Cisplatin-activated autophagy promotes the expression of circ-PKD2, which plays a role as a tumor suppressor gene in the proliferation, migration, and invasion in oral squamous cell carcinoma (OSCC). However, the role of circ-PKD2 in regulating the sensitivity of OSCC patients to cisplatin remains to be elucidated. Overexpression of circ-PKD2 increased the formation of autophagosomes in OSCC cells and activation of proteins, such as LC3 II/I. Its activation effect on autophagy was, however, alleviated by 3-MA. Bioinformatics analyses and double luciferases reporter assays conducted in this study confirmed the existence of targeted relationships between circ-PKD2 and miR-646 and miR-646 and Atg13. Functional experiments further revealed that miR-646 reversed the autophagy and apoptosis effects of circ-PKD2 in OSCC cells treated with cisplatin. In addition, circ-PKD2 promoted the expression of ATG13 by adsorption of miR-646. Its interference with Atg13 alleviated the activation effects of circ-PKD2 on autophagy and apoptosis of miR-646. Notably, the in vivo animal experiments also confirmed that circ-PKD2 inhibited tumor proliferation and activated autophagy in OSCC cells. This study provides a theoretical basis for using circ-PKD2 as a target to regulate the sensitivity of OSCC patients to cisplatin, thus increasing its chemotherapeutic effects.
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Yang Y, Huang Y, Lin W, Liu J, Chen X, Chen C, Yu X, Teng L. Host miRNAs-microbiota interactions in gastric cancer. J Transl Med 2022; 20:52. [PMID: 35093110 PMCID: PMC8800214 DOI: 10.1186/s12967-022-03264-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 01/17/2022] [Indexed: 12/24/2022] Open
Abstract
It is widely acknowledged that gastric cancer seriously affects the quality of life and survival of patients. The correlation between the microbiota and gastric cancer has attracted extensive attention in recent years, nonetheless the specific mechanism of its impact on gastric cancer remain largely unclear. Recent studies have shown that in addition to its role in the host’s inflammatory and immune response, the microbiota can also affect the occurrence and development of gastric cancer by affecting the expression of miRNAs. This paper brings together all currently available data on miRNAs, microbiota and gastric cancer, and preliminarily describes the relationship among them.
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Tang SY, Zhou PJ, Meng Y, Zeng FR, Deng GT. Gastric cancer: An epigenetic view. World J Gastrointest Oncol 2022; 14:90-109. [PMID: 35116105 PMCID: PMC8790429 DOI: 10.4251/wjgo.v14.i1.90] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 05/17/2021] [Accepted: 12/23/2021] [Indexed: 02/06/2023] Open
Abstract
Gastric cancer (GC) poses a serious threat worldwide with unfavorable prognosis mainly due to late diagnosis and limited therapies. Therefore, precise molecular classification and search for potential targets are required for diagnosis and treatment, as GC is complicated and heterogeneous in nature. Accumulating evidence indicates that epigenetics plays a vital role in gastric carcinogenesis and progression, including histone modifications, DNA methylation and non-coding RNAs. Epigenetic biomarkers and drugs are currently under intensive evaluations to ensure efficient clinical utility in GC. In this review, key epigenetic alterations and related functions and mechanisms are summarized in GC. We focus on integration of existing epigenetic findings in GC for the bench-to-bedside translation of some pivotal epigenetic alterations into clinical practice and also describe the vacant field waiting for investigation.
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Affiliation(s)
- Si-Yuan Tang
- Department of Gastroenterology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
| | - Pei-Jun Zhou
- Cancer Research Institute, School of Basic Medicine Science, Central South University, School of Basic Medicine Science, Central South University 410008, Hunan Province, China
| | - Yu Meng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
| | - Fu-Rong Zeng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
| | - Guang-Tong Deng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
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Hsa_circ_0008259 modulates miR-21-5p and PDCD4 expression to restrain osteosarcoma progression. Aging (Albany NY) 2021; 13:25484-25495. [PMID: 34905503 PMCID: PMC8714152 DOI: 10.18632/aging.203769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 11/11/2021] [Indexed: 12/21/2022]
Abstract
BACKGROUND Osteosarcoma (OS) is one of the most common primary bone tumors in children and adolescents. However, the molecular mechanism of OS tumorigenesis is still little known. Circular RNA (circRNA) is a key player in the progression of many cancers. This study is performed to decipher the role and mechanism of circ_0008259 in the progression of OS. METHODS A differentially expressed circRNA, circ_0008259, was screened out by analyzing the expression profile of circRNA in OS tissue. Circ_0008259, miR-21-5p and programmable cell death 4 (PDCD4) mRNA expression levels in OS tissues and cells were detected by qRT-PCR. Cell viability, metastatic potential and apoptosis were evaluated by cell counting kit-8 assay, Transwell and flow cytometry. The targeting relationship between circ_0008259 and miR-21-5p, and miR-21-5p and PDCD4 mRNA was analyzed and probed by bioinformatics analysis and dual-luciferase reporter assay, RNA-binding protein immunoprecipitation assay and RNA-pull down assay. The regulatory effects of circ_0008259 and miR-21-5p on PDCD4 protein expression in OS cells were detected by Western blot assay. RESULTS Circ_0008259 expression and PDCD4 expression were down-regulated and miR-21-5p expression was elevated in the OS tissues and cells. Functional experiments showed that circ_0008259 overexpression significantly inhibited the proliferation and metastatic potential of OS cells and promoted the apoptosis. Besides, PDCD4 was validated as the target gene of miR-21-5p, and circ_0008259 could competitively bind to miR-21-5p, thus up-regulating PDCD4 expression in OS cells. CONCLUSIONS Circ_0008259 suppresses OS progression via regulating miR-21-5p/PDCD4 axis.
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Papaspyropoulos A, Hazapis O, Lagopati N, Polyzou A, Papanastasiou AD, Liontos M, Gorgoulis VG, Kotsinas A. The Role of Circular RNAs in DNA Damage Response and Repair. Cancers (Basel) 2021; 13:cancers13215352. [PMID: 34771517 PMCID: PMC8582540 DOI: 10.3390/cancers13215352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/15/2021] [Accepted: 10/15/2021] [Indexed: 12/12/2022] Open
Abstract
Circular RNAs (circRNA) comprise a distinct class of non-coding RNAs that are abundantly expressed in the cell. CircRNAs have the capacity to regulate gene expression by interacting with regulatory proteins and/or other classes of RNAs. While a vast number of circRNAs have been discovered, the majority still remains poorly characterized. Particularly, there is no detailed information on the identity and functional role of circRNAs that are transcribed from genes encoding components of the DNA damage response and repair (DDRR) network. In this article, we not only review the available published information on DDRR-related circRNAs, but also conduct a bioinformatic analysis on data obtained from public repositories to uncover deposited, yet uncharacterized circRNAs derived from components of the DDRR network. Finally, we interrogate for potential targets that are regulated by this class of molecules and look into potential functional implications.
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Affiliation(s)
- Angelos Papaspyropoulos
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Biomedical Research Foundation, Academy of Athens, GR-11527 Athens, Greece
| | - Orsalia Hazapis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
| | - Nefeli Lagopati
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Biomedical Research Foundation, Academy of Athens, GR-11527 Athens, Greece
| | - Aikaterini Polyzou
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
| | - Anastasios D. Papanastasiou
- Department of Biomedical Sciences, University of West Attica, GR-12462 Athens, Greece;
- Histopathology Unit, Biomedical Sciences Research Center ‘Alexander Fleming’, GR-16672 Vari, Greece
| | - Michalis Liontos
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Oncology Unit, Department of Clinical Therapeutics, Medical School, National and Kapodistrian University of Athens, Alexandra Hospital, GR-11528 Athens, Greece
| | - Vassilis G. Gorgoulis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Biomedical Research Foundation, Academy of Athens, GR-11527 Athens, Greece
- Molecular and Clinical Cancer Sciences, Manchester Cancer Research Centre, Manchester Academic Health Sciences Centre, University of Manchester, Manchester M20 4GJ, UK
- Center for New Biotechnologies and Precision Medicine, Medical School, National and Kapodistrian University of Athens, GR-11527 Athens, Greece
- Faculty of Health and Medical Sciences, University of Surrey, Surrey GU2 7YH, UK
- Correspondence: (V.G.G.); (A.K.); Tel.: +30-210-746-2352 (V.G.G.); +30-210-746-2420 (A.K.)
| | - Athanassios Kotsinas
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National Kapodistrian University of Athens (NKUA), 75 Mikras Asias Str., Goudi, GR-11527 Athens, Greece; (A.P.); (O.H.); (N.L.); (A.P.); (M.L.)
- Correspondence: (V.G.G.); (A.K.); Tel.: +30-210-746-2352 (V.G.G.); +30-210-746-2420 (A.K.)
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Lu Y, Li K, Gao Y, Liang W, Wang X, Chen L. CircRNAs in gastric cancer: current research and potential clinical implications. FEBS Lett 2021; 595:2644-2654. [PMID: 34561854 DOI: 10.1002/1873-3468.14196] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 09/04/2021] [Accepted: 09/14/2021] [Indexed: 12/11/2022]
Abstract
Gastric cancer (GC) has a dismal prognosis and is also one of the most commonly diagnosed malignancies worldwide. circRNAs are covalently closed circular RNA molecules without 5'-cap and a 3'-tail, currently listed among the broad noncoding RNA family. circRNAs participate in a variety of pathophysiological processes relevant to human diseases, especially malignancies, including GC. Compelling evidence has shown that circRNAs can function by sponging miRNAs, interacting with RNA binding proteins, and encoding proteins or peptides. Yet, our current understanding of these RNA circles remains very limited. Here, we overview the biogenesis, characteristics, functions, and degradation of circRNAs. Moreover, we give an account of the circRNAs that have been linked with GC, describing their functions and mechanisms of action in the context of GC. Next, we discuss the potential value of circRNAs as diagnostic or prognostic GC biomarkers and summarize future prospects, important questions, and challenges of circRNA-based therapeutics.
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Affiliation(s)
- Yixun Lu
- Medical School of Chinese PLA, Beijing, China.,Department & Institute of General Surgery, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Kai Li
- Medical School of Chinese PLA, Beijing, China.,Department & Institute of General Surgery, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yunhe Gao
- Department & Institute of General Surgery, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Wenquan Liang
- Department & Institute of General Surgery, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xinxin Wang
- Department & Institute of General Surgery, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Lin Chen
- Department & Institute of General Surgery, the First Medical Center of Chinese PLA General Hospital, Beijing, China
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Ma S, Gu X, Shen L, Chen Y, Qian C, Shen X, Ju S. CircHAS2 promotes the proliferation, migration, and invasion of gastric cancer cells by regulating PPM1E mediated by hsa-miR-944. Cell Death Dis 2021; 12:863. [PMID: 34556632 PMCID: PMC8460735 DOI: 10.1038/s41419-021-04158-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/19/2021] [Accepted: 09/09/2021] [Indexed: 12/24/2022]
Abstract
Gastric cancer (GC) is considered one of the most common gastrointestinal malignancies worldwide. Circular RNAs (circRNAs) are a new class of endogenous noncoding RNAs, which can be used as biomarkers and therapeutic targets for many tumors. However, the role and potential regulatory mechanisms of circRNAs in GC remain unclear. In this study, we demonstrated that a specific circRNA, circHAS2, was upregulated in GC tissues and cells and was positively correlated with tumor metastasis. In vitro experiments demonstrated that circHAS2 knockdown or the addition of hsa-miR-944 mimics inhibited the proliferation, migration, and invasion ability of GC cells and affected the epithelial-mesenchymal transition. In addition, hsa-miR-944 interacted with protein phosphatase, Mg2+/Mn2+-dependent 1E (PPM1E), and was found to be a target gene of circHAS2. The upregulation of PPM1E reversed the effects of circHAS2 knockout on GC cells. The circHAS2/hsa-miR-944/PPM1E axis may be involved in the progression of GC; thus, circHAS2 may be a potential biomarker and therapeutic target for GC.
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Affiliation(s)
- Shuo Ma
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
- Medical School of Nantong University, Nantong University, Nantong, 226001, Jiangsu, China
| | - Xinliang Gu
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
- Medical School of Nantong University, Nantong University, Nantong, 226001, Jiangsu, China
| | - Lei Shen
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
- Medical School of Nantong University, Nantong University, Nantong, 226001, Jiangsu, China
| | - Yinhao Chen
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
- Department of Urology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
| | - Chen Qian
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
| | - Xianjuan Shen
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China.
| | - Shaoqing Ju
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China.
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Huang Y, Zhu Q. Mechanisms Regulating Abnormal Circular RNA Biogenesis in Cancer. Cancers (Basel) 2021; 13:cancers13164185. [PMID: 34439339 PMCID: PMC8391333 DOI: 10.3390/cancers13164185] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 01/22/2023] Open
Abstract
Simple Summary Circular RNAs (circRNAs) are circular RNA molecules without a 5′ cap and a 3′ poly(A) tail structure, which play an important role in tumor development, invasion and metastasis, etc. However, the mechanism of circRNA dysregulation in cancer remains unclear. Different from the classic splicing of linear RNA, circRNA is formed by back-splicing and is regulated by many cis-acting elements and trans-acting proteins. Exploring how the dysregulation of cis-regulatory elements and trans-acting proteins in tumor cells affects the biogenesis of circRNA, which in turn affects the development and prognosis of cancer, is of great significance for circRNA to become a cancer biomarker and therapeutic target. Abstract Circular RNAs (circRNAs), which are a class of endogenous RNA with covalently closed loops, play important roles in epigenetic regulation of gene expression at both the transcriptional and post-transcriptional level. Accumulating evidence demonstrated that numerous circRNAs were abnormally expressed in tumors and their dysregulation was involved in the tumorigenesis and metastasis of cancer. Although the functional mechanisms of many circRNAs have been revealed, how circRNAs are dysregulated in cancer remains elusive. CircRNAs are generated by a “back-splicing” process, which is regulated by different cis-regulatory elements and trans-acting proteins. Therefore, how these cis and trans elements change during tumorigenesis and how they regulate the biogenesis of circRNAs in cancer are two questions that interest us. In this review, we summarized the pathways for the biogenesis of circRNAs; and then illustrated how circRNAs dysregulated in cancer by discussing the changes of cis-regulatory elements and trans-acting proteins that related to circRNA splicing and maturation in cancer.
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Affiliation(s)
| | - Qubo Zhu
- Correspondence: ; Tel.: +86-18670318650
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Zhang Y, Hu G, Zhang Z, Jing Y, Tao F, Ye M. CircRNA_0043691 sponges miR-873-3p to promote metastasis of gastric cancer. Mamm Genome 2021; 32:476-487. [PMID: 34370061 DOI: 10.1007/s00335-021-09900-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 07/30/2021] [Indexed: 12/25/2022]
Abstract
Circular RNAs (circRNAs) are a class of novel RNAs, and aberrant expression of circRNAs has been implicated in human diseases, including gastric cancer (GC). This study aimed to identify the mechanism of circRNA_0043691 in regulating the progression of GC. GSE141977 was downloaded from Gene Expression Omibus ( http://www.ncbi.nlm.nih.gov/geo/ ). Differentially expressed circRNAs were obtained by R software. The expression levels of circRNA_0043691 in GC tissue and normal tissue were identified by quantitative real-time polymerase chain reaction (qRT-PCR). Knockdown of circRNA_0043691 was then constructed and verified by qRT-PCR. Cell viability, migration, and invasion capacity were determined by Cell Counting Kit-8 assay, Transwell migration, and invasion, respectively. Next, knockdown of miR-873-3p was constructed and co-cultured with circRNA_0043691 knockdown to identify whether knockdown of miR-873-3p could attenuate the circRNA_0043691 knockdown on GC cells proliferation, migration, and invasion. The relationship between miR-873-3p and circRNA_0043691 or GART was predicted by bioinformatics tools and verified by dual-luciferase reporter. A total of 211 circRNAs were significantly differentially expressed, including 143 remarkably downregulated circRNAs and 68 significantly upregulated circRNAs. CircRNA_0043691 was upregulated in GC tissue. Knockdown of circRNA_0043691 decreased cell viability, migration, and invasion in GC cells. CircRNA_0043691 has potential putative binding sites with miR-873-3p. Moreover, CircRNA_0043691 positively regulated GART expression by sponging miR-873-3p. Furthermore, knockdown of miR-591 could partially attenuate the si-circRNA_0043691 on the GART expression. GART was upregulated in GC tissue and knockdown of GART could inhibit GC cells proliferation and invasion. Knockdown of circRNA_0043691 delayed the progression of GC via modulating the miR-873-3p-GART axis.
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Affiliation(s)
- Yu Zhang
- Department of Gastrointestinal Surgery, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), No. 568 Zhongxing North Road, Shaoxing, 312000, Zhejiang Province, China
| | - Gengyuan Hu
- Department of Gastrointestinal Surgery, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), No. 568 Zhongxing North Road, Shaoxing, 312000, Zhejiang Province, China
| | - Zhenxing Zhang
- Department of Gastrointestinal Surgery, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), No. 568 Zhongxing North Road, Shaoxing, 312000, Zhejiang Province, China
| | - Yuanming Jing
- Department of Gastrointestinal Surgery, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), No. 568 Zhongxing North Road, Shaoxing, 312000, Zhejiang Province, China
| | - Feng Tao
- Department of Gastrointestinal Surgery, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), No. 568 Zhongxing North Road, Shaoxing, 312000, Zhejiang Province, China
| | - Minfeng Ye
- Department of Gastrointestinal Surgery, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), No. 568 Zhongxing North Road, Shaoxing, 312000, Zhejiang Province, China.
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Wang M, Wu X, Yu L, Hu ZY, Li X, Meng X, Lv CT, Kim GY, Choi YH, Wang Z, Xu HW, Jin CY. LCT-3d Induces Oxidative Stress-Mediated Apoptosis by Upregulating Death Receptor 5 in Gastric Cancer Cells. Front Oncol 2021; 11:658608. [PMID: 33937072 PMCID: PMC8085419 DOI: 10.3389/fonc.2021.658608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 03/22/2021] [Indexed: 12/18/2022] Open
Abstract
Gastric cancer is a global health problem. In this study, we investigate the role of a novel Indole derivative, named LCT-3d, in inhibiting the growth of gastric cancer cells by MTT assay. The Western blotting results showed that LCT-3d modulated the mitochondrial-related proteins and Cleaved-Caspases 3/9, to induce cell apoptosis. The up-regulation of Death receptor 5 (DR5) in MGC803 cells was observed with LCT-3d treatment. Knockdown of DR5 on MGC803 cells partially reversed the LCT-3d-induced mitochondrial apoptosis. The level of Reactive Oxygen Species (ROS) in MGC803 cells was increased with LCT-3d treatment and could be blocked with the pretreatment of the ROS inhibitor N-Acetylcysteine (NAC). The results demonstrate that the elevating ROS can up-regulate the expression of DR5, resulting in apoptosis via mitochondrial pathway. Although the nuclear factor erythroid-2 related factor 2 (Nrf2) pathway served an important role in protecting gastric cancer cells against the injury of ROS, it can’t reverse LCT-3d-induced cell apoptosis. Taken together, our study showed that LCT-3d induced apoptosis via DR5-mediated mitochondrial apoptotic pathway in gastric cancer cells. LCT-3d could be a novel lead compound for development of anti-cancer activity in gastric cancer.
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Affiliation(s)
- Menglin Wang
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Xinxin Wu
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Lu Yu
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Zi-Yun Hu
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Xiaobo Li
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Xia Meng
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Chun-Tao Lv
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Gi-Young Kim
- Department of Marine Life Sciences, Jeju National University, Jeju, South Korea
| | - Yung Hyun Choi
- Department of Biochemistry, College of Oriental Medicine, Dong-Eui University, Busan, South Korea
| | - Zhengya Wang
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Hai-Wei Xu
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Cheng-Yun Jin
- Key Laboratory of Advanced Technology for Drug Preparation, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, China
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