1
|
Liang Z, Shi Y, Guan Z. CircECE1 promotes osteosarcoma progression through regulating RAB3D by sponging miR-588. J Orthop Surg Res 2023; 18:587. [PMID: 37559140 PMCID: PMC10410784 DOI: 10.1186/s13018-023-04045-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 07/25/2023] [Indexed: 08/11/2023] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) have been confirmed to be involved in cancer pathogenesis. However, the underlying mechanism of circRNA endothelin converting enzyme 1 (circECE1) in osteosarcoma (OS) development is still not understood. METHODS The expression levels of circECE1, microRNA-588 (miR-588) and RAB3D, member RAS oncogene family (RAB3D) were gauged by quantitative real-time polymerase chain reaction (qRT-PCR) and western blot. OS cell proliferation was assessed by cell counting kit-8 (CCK-8) assay and 5-ethynyl-2'-deoxyuridine (EdU) assay. OS cell apoptosis rate and metastasis were identified by flow cytometry and transwell assay. Dual-luciferase reporter analysis and RNA immunoprecipitation (RIP) assay were performed to confirm the interactions among circECE1, miR-588 and RAB3D. Xenograft tumor models were established to explore circECE1 function in vivo. Immunohistochemistry (IHC) assay was applied to analyze RAB3D level after circECE1 knockdown. RESULTS In OS, circECE1 expression was higher than that in normal chondroma tissues. High levels of circECE1 were positively linked to OS cell viability, proliferation, migration and invasion, and negatively linked to OS cell apoptosis rate. It was found that circECE1 was a miR-588 sponge, and miR-588 inhibitor abrogated the influence of si-circECE1 on OS cells. MiR-588 targeted RAB3D to further regulate the pathological process of OS. Moreover, silencing circECE1 blocked OS tumor growth in vivo. CONCLUSION We elucidated the function of a novel circECE1/miR-588/RAB3D axis in OS progression.
Collapse
Affiliation(s)
- Zhizhong Liang
- Department of Bone and Soft Tissue Oncology, Shanxi Province Cancer Hospital, Shanxi Hospital Affiliated to Cancer Hospital, Chinese Academy of Medical Sciences, Cancer Hospital Affiliated to Shanxi Medical University, No.3, Zhigong New Street, Xinghualing District, Taiyuan, 030013, China
| | - Yuxia Shi
- Department of Bone and Soft Tissue Oncology, Shanxi Province Cancer Hospital, Shanxi Hospital Affiliated to Cancer Hospital, Chinese Academy of Medical Sciences, Cancer Hospital Affiliated to Shanxi Medical University, No.3, Zhigong New Street, Xinghualing District, Taiyuan, 030013, China
| | - Zhe Guan
- Department of Bone and Soft Tissue Oncology, Shanxi Province Cancer Hospital, Shanxi Hospital Affiliated to Cancer Hospital, Chinese Academy of Medical Sciences, Cancer Hospital Affiliated to Shanxi Medical University, No.3, Zhigong New Street, Xinghualing District, Taiyuan, 030013, China.
| |
Collapse
|
2
|
Zheng X, Shao J, Qian J, Liu S. circRPS19 affects HK2‑mediated aerobic glycolysis and cell viability via the miR‑125a‑5p/USP7 pathway in gastric cancer. Int J Oncol 2023; 63:98. [PMID: 37449524 PMCID: PMC10552706 DOI: 10.3892/ijo.2023.5546] [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: 11/11/2022] [Accepted: 05/23/2023] [Indexed: 07/18/2023] Open
Abstract
Despite advances in diagnosis and treatment, gastric cancer (GC) remains a refractory disease, which limits overall survival. Therefore, it is key to identify novel targets to develop more effective and precise treatment. Circular RNAs (circRNAs) serve essential roles in the process of various human cancers. Through analyzing GSE83521 dataset, the present study identified a novel circRNA derived from ribosomal protein S19 (circRPS19), which was considered a potential treatment target for GC. Results of RT‑qPCR indicated that circRPS19 was upregulated in GC compared with normal gastric epithelial cells. Loss‑of function assays revealed that silencing of circRPS19 suppressed proliferation and aerobic glycolysis but increased apoptosis of GC cells. circRPS19 upregulated ubiquitin‑specific processing protease 7 (USP7) expression by sponging microRNA (miR)‑125a‑5p. circRPS19 stabilized hexokinase 2 (HK2) protein by USP7‑mediated deubiquitination of HK2. In vivo experiments confirmed that circRPS19 promoted GC progression and aerobic glycolysis. Taken together, circRPS19 induced aerobic glycolysis of GC cells by stabilizing HK2 protein via the miR‑125a‑5p/USP7 axis and thus promoting the progression of GC. These findings suggested that circRPS19 served a critical role in the progression of GC and may be a novel therapeutic target for GC.
Collapse
Affiliation(s)
- Xia Zheng
- Oncology Department, Affiliated Hospital of Nanjing University of Chinese Medicine
- Oncology Department, Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Jie Shao
- Oncology Department, Affiliated Hospital of Nanjing University of Chinese Medicine
- Oncology Department, Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Jun Qian
- Oncology Department, Affiliated Hospital of Nanjing University of Chinese Medicine
- Oncology Department, Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| | - Shenlin Liu
- Oncology Department, Affiliated Hospital of Nanjing University of Chinese Medicine
- Oncology Department, Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China
| |
Collapse
|
3
|
Yang H, Ai H, Zhang J, Ma J, Liu K, Li Z. UPS: Opportunities and challenges for gastric cancer treatment. Front Oncol 2023; 13:1140452. [PMID: 37077823 PMCID: PMC10106573 DOI: 10.3389/fonc.2023.1140452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 03/20/2023] [Indexed: 04/05/2023] Open
Abstract
Gastric cancer remains the fourth most frequently diagnosed malignancy and the fifth leading cause of cancer-related mortality worldwide owning to the lack of efficient drugs and targets for therapy. Accumulating evidence indicates that UPS, which consists of E1, E2, and E3 enzymes and proteasome, plays an important role in the GC tumorigenesis. The imbalance of UPS impairs the protein homeostasis network during development of GC. Therefore, modulating these enzymes and proteasome may be a promising strategy for GC target therapy. Besides, PROTAC, a strategy using UPS to degrade the target protein, is an emerging tool for drug development. Thus far, more and more PROTAC drugs enter clinical trials for cancer therapy. Here, we will analyze the abnormal expression enzymes in UPS and summarize the E3 enzymes which can be developed in PROTAC so that it can contribute to the development of UPS modulator and PROTAC technology for GC therapy.
Collapse
Affiliation(s)
- Hang Yang
- The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
| | - Huihan Ai
- The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
| | - Jialin Zhang
- The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
| | - Jie Ma
- The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
| | - Kangdong Liu
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
- China-US Hormel (Henan) Cancer Institute, Zhengzhou, Henan, China
- Research Center of Basic Medicine, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
- *Correspondence: Zhi Li, ; Kangdong Liu,
| | - Zhi Li
- The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
- *Correspondence: Zhi Li, ; Kangdong Liu,
| |
Collapse
|
4
|
Long noncoding RNA DLEU2 regulates the progression of Wilm's tumor via miR-539-3p/HOXB2 axis. J Pediatr Urol 2023; 19:25-32. [PMID: 36209036 DOI: 10.1016/j.jpurol.2022.07.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 06/24/2022] [Accepted: 07/07/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND Wilm's tumor is the most common renal cancer in the pediatric age group. Long noncoding RNAs (lncRNAs) are a kind of RNA transcripts longer than ∼200 nucleotides, which have been revealed to be involved in the progression of Wilm's tumor. OBJECTIVE The purpose of this study was to investigate the function and molecular mechanism of deleted in lymphocytic leukemia 2 (DLEU2) lncRNA in Wilm's tumor progression. STUDY DESIGN Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect the expression of DLEU2, miR-539-3p and HOXB2 mRNA in Wilm's tumor tissues and cells. Cell counting kit-8 assay, 5-ethynyl-2'-deoxyuridine (EdU) assay, colony formation assay, transwell assay, and flow cytometry were applied to explore the function of DLEU2 in Wilm's tumor cell malignant phenotypes and the regulatory mechanism among DLEU2, miR-539-3p and HOXB2 in Wilm's tumor cells. Western blot examined the protein levels of Bax, Bcl-2 and HOXB2. The relationship between miR-539-3p and DLEU2 or HOXB2 was verified by dual-luciferase reporter assay. Xenograft models of Wilm's tumor were established to study the role of DLEU2 in vivo. RESULTS DLEU2 and HOXB2 were significantly highly expressed in primary Wilm's tumor tissues and in vitro cell lines. Silencing of DLEU2 reduced the proliferation, migration and invasion of Wilm's tumor cells, and promoted cell apoptosis. MiR-539-3p was confirmed to be a target of DLEU2. DLEU2 silencing inhibited the malignant behaviors of Wilm's tumor cells by releasing miR-539-3p. In addition, HOXB2 was a target of miR-539-3p. Overexpression of HOXB2 partially restored the inhibitory effects of miR-539-3p on Wilm's tumor cell malignant behaviors. Animal experiments also confirmed the anti-tumor effects of DLEU2 silencing in vivo. CONCLUSION DLEU2 up-regulates the expression of HOXB2 by targetedly repressing miR-539-3p, thereby at least partially promoting the development of Wilm's tumor, these findings provided novel therapeutic targets for Wilm's tumor.
Collapse
|
5
|
Zhang Y, Wang S, Guo S, Zhang X, Yang C, Su G, Wan J. Circ_0004104 participates in the regulation of ox-LDL-induced endothelial cells injury via miR-942-5p/ROCK2 axis. BMC Cardiovasc Disord 2022; 22:517. [PMID: 36460954 PMCID: PMC9717494 DOI: 10.1186/s12872-022-02959-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 11/17/2022] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND Cardiovascular disease was the most common disease among the elderly with high morbidity and mortality. Circ_0004104 was demonstrated to be involved in the regulation of atherosclerosis. METHODS Quantitative real-time polymerase chain reaction was employed to measure the expression of circ_0004104, miR-942-5p and Rho associated coiled-coil containing protein kinase 2 (ROCK2). Cell proliferation was tested by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay. Cell apoptosis was measured by flow cytometry, and tube formation assay was used to detect the angiogenesis ability of cells. Western blot assay was performed to assess protein levels. Enzyme‑linked immunosorbent assay was used to detect the release of IL-1β and TNF-α. The relationship between miR-942-5p and circ_0004104 or ROCK2 was identified by dual-luciferase reporter assay, RNA immunoprecipitation (RIP) assay, and RNA pull-down assay. RESULTS Oxidized low-density lipoprotein (ox-LDL) inhibited the proliferation of human umbilical vein endothelial cells (HUVECs) and promoted apoptosis in a dose-dependent manner. Circ_0004104 was increased in serum of atherosclerosis patients and ox-LDL-treated HUVECs, and silence of circ_0004104 promoted the proliferation of ox-LDL-exposed HUVECs and inhibited cell apoptosis. MiR-942-5p downregulation reversed si-circ_0004104-mediated influences in HUVECs upon ox-LDL exposure. ROCK2 was the target of miR-942-5p and circ_0004104 regulated the expression of ROCK2 through sponging miR-942-5p. ROCK2 abated the influences of miR-942-5p in ox-LDL-stimulated HUVECs. Circ_0004104 was increased in the exosomes derived from ox-LDL-exposed HUVECs, and the expression of circ_0004104 was promoted in HUVECs after stimulation with ox-LDL-treated HUVECs cells-derived exosomes. CONCLUSION Circ_0004104 downregulation receded ox-LDL-induced injury in HUVECs through miR-942-5p and ROCK2.
Collapse
Affiliation(s)
- Yuanyuan Zhang
- grid.412467.20000 0004 1806 3501Cardiovascular Internal Medicine Department, Shengjing Hospital of China Medical University, No. 36, Sanhao Street, Heping District, Shenyang, 110000 China
| | - Shaojun Wang
- grid.412467.20000 0004 1806 3501Cardiovascular Internal Medicine Department, Shengjing Hospital of China Medical University, No. 36, Sanhao Street, Heping District, Shenyang, 110000 China
| | - Sicong Guo
- grid.412467.20000 0004 1806 3501Cardiovascular Internal Medicine Department, Shengjing Hospital of China Medical University, No. 36, Sanhao Street, Heping District, Shenyang, 110000 China
| | - Xinzhong Zhang
- grid.412467.20000 0004 1806 3501Cardiovascular Internal Medicine Department, Shengjing Hospital of China Medical University, No. 36, Sanhao Street, Heping District, Shenyang, 110000 China
| | - Chuan Yang
- grid.412467.20000 0004 1806 3501Cardiovascular Internal Medicine Department, Shengjing Hospital of China Medical University, No. 36, Sanhao Street, Heping District, Shenyang, 110000 China
| | - Guangsheng Su
- grid.412467.20000 0004 1806 3501Cardiovascular Internal Medicine Department, Shengjing Hospital of China Medical University, No. 36, Sanhao Street, Heping District, Shenyang, 110000 China
| | - Jiye Wan
- grid.412467.20000 0004 1806 3501Cardiovascular Internal Medicine Department, Shengjing Hospital of China Medical University, No. 36, Sanhao Street, Heping District, Shenyang, 110000 China
| |
Collapse
|
6
|
Chu C, Liu X, Zhao Z, Shi Z. Circ_0008035 promotes the progression of gastric cancer via the regulation of miR-1256/CEACAM6 axis. Cell Cycle 2022; 21:1091-1102. [PMID: 35220873 PMCID: PMC9037572 DOI: 10.1080/15384101.2022.2041354] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Gastric cancer (GC) is one of the most common malignant tumors. Circular RNA (circRNA) has been shown to be involved in the progression of GC. However, the function of circ_0008035 in GC has not been studied. Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect the expression of circ_0008035, microRNA-1256 (miR-1256) and carcinoembryonic antigen-related cell adhesion molecule 6 (CEACAM6). 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay, 5-ethynyl-2'-deoxyuridine (EdU) assay, flow cytometry, and transwell assay were used to detect cell function. Western blot examined the protein levels of Ki67, Bax, MMP-2, and CEACAM6. The relationship between miR-1256 and circ_0008035 or CEACAM6 was verified by dual-luciferase reporter assays and RNA pull down. The xenotransplantation model was established in BALB/c nude mice to study the role of circ_0008035 in vivo. Circ_0008035 and CEACAM6 were significantly high-expressed in GC tissues and cells. Silencing of circ_0008035 reduced GC cell proliferation, migration, and invasion while enhancing apoptosis. MiR-1256 was a target of circ_0008035. The inhibition effect of circ_0008035 knockdown on the malignant behavior of GC cells could be reversed by miR-1256 inhibitor. In addition, CEACAM6 was a target of miR-1256. Overexpression of CEACAM6 partially restored the inhibitory effect of miR-1256 on cell progression. Animal experiments confirmed the anti-tumor effect of circ_0008035 knockdown in vivo. Collectively, circ_0008035 regulated the expression of CEACAM6 by sponging miR-1256, thereby promoting the development of GC. Our data provided a novel targeted therapy for GC.
Collapse
Affiliation(s)
- Chaoyang Chu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, Henan, China
| | - Xianli Liu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, Henan, China,CONTACT Xianli Liu Department of Gastrointestinal Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, 636 Guanlin Road, Luolong District, Luoyang, 471003, Henan Province, China
| | - Zhiguo Zhao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, Henan, China
| | - Zhijie Shi
- Department of Gastrointestinal Surgery, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, Henan, China
| |
Collapse
|
7
|
Circ_0000442 functions as a tumor repressor in breast cancer by impacting miR-1229-3p and upregulating ZBTB1. Mamm Genome 2022; 33:543-554. [PMID: 35394175 DOI: 10.1007/s00335-022-09950-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 02/22/2022] [Indexed: 10/18/2022]
Abstract
A variety of circular RNAs (circRNAs) have tumor-regulatory roles in breast cancer (BC). Circ_0000442 was reported to inhibit the progression of BC, and this study was designed to explore the novel functional mechanism of circ_0000442 in BC. The expression analysis for circ_0000442, microRNA-1229-3p (miR-1229-3p) and zinc finger and BTB domain containing 1 (ZBTB1) was performed using the quantitative real-time polymerase chain reaction (qRT-PCR). Dual-luciferase reporter assay was used to affirm the target interaction. Cell proliferation was examined using Edu assay and colony formation assay. Cell migration and invasion were assessed by transwell assay. Flow cytometry was applied for the detection of cell apoptosis. Glycolysis was analyzed using the detection kits to measure the glucose consumption and lactate production. The protein expression levels were determined by western blot. The role of circ_0000442 in BC in vivo was explored using tumor xenograft assay. Circ_0000442 expression was downregulated and miR-1229-3p expression was upregulated in BC tissues and cells. Circ_0000442 directly interacted with miR-1229-3p. Circ_0000442 repressed proliferation, migration, invasion and glycolysis but promoted apoptosis in BC cells. The anti-tumor role of circ_0000442 was attributed to the sponge effect on miR-1229-3p. ZBTB1 was a downstream target for miR-1229-3p. Downregulation of miR-1229-3p blocked the malignant behaviors in BC cells by elevating the expression of ZBTB1. Circ_0000442 regulated the ZBTB1 level by targeting miR-1229-3p, and it inhibited tumor growth of BC in vivo by mediating the miR-1229-3p/ZBTB1 axis. All evidence unraveled that circ_0000442 impeded the progression of BC by sponging miR-1229-3p to evoke the ZBTB1 expression upregulation.
Collapse
|
8
|
Chen C, Xia C, Tang H, Jiang Y, Wang S, Zhang X, Huang T, Yuan X, Wang J, Peng L. Circular RNAs Involve in Immunity of Digestive Cancers From Bench to Bedside: A Review. Front Immunol 2022; 13:833058. [PMID: 35464462 PMCID: PMC9020258 DOI: 10.3389/fimmu.2022.833058] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 03/01/2022] [Indexed: 12/12/2022] Open
Abstract
The immune system plays a complex role in tumor formation and development. On the one hand, immune surveillance can inhibit the growth of tumors; on the other hand, immune evasion of tumors can create conditions conducive for tumor development and growth. CircRNAs are endogenous non-coding RNAs with a covalently closed loop structure that are abundantly expressed in eukaryotic organisms. They are characterized by stable structure, rich diversity, and high evolutionary conservation. In particular, circRNAs play a vital role in the occurrence, development, and treatment of tumors through their unique functions. Recently, the incidence and mortality of digestive cancers, especially those of gastric cancer, colorectal cancer, and liver cancer, have remained high. However, the functions of circRNAs in digestive cancers immunity are less known. The relationship between circRNAs and digestive tumor immunity is systematically discussed in our paper for the first time. CircRNA can influence the immune microenvironment of gastrointestinal tumors to promote their occurrence and development by acting as a miRNA molecular sponge, interacting with proteins, and regulating selective splicing. The circRNA vaccine even provides a new idea for tumor immunotherapy. Future studies should be focused on the location, transportation, and degradation mechanisms of circRNA in living cells and the relationship between circRNA and tumor immunity. This paper provides a new idea for the diagnosis and treatment of gastrointestinal tumors.
Collapse
Affiliation(s)
- Chunyue Chen
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Congcong Xia
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Hao Tang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Yirun Jiang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Shan Wang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
- Department of Pathology, School of Basic Medicine, Central South University, Changsha, China
| | - Xin Zhang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
- Department of Pathology, School of Basic Medicine, Central South University, Changsha, China
| | - Tao Huang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
- Department of Pathology, School of Basic Medicine, Central South University, Changsha, China
| | - Xiaoqing Yuan
- Guangdong Provincial Key Laboratory of Malignant Tumour Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Breast Tumour Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Junpu Wang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
- Department of Pathology, School of Basic Medicine, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Li Peng, ; Junpu Wang,
| | - Li Peng
- Guangdong Provincial Key Laboratory of Malignant Tumour Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- *Correspondence: Li Peng, ; Junpu Wang,
| |
Collapse
|
9
|
Qin F, Wang F, Wang XP, Chen J, Zeng FH, Sun CL, Mao JCP, Li CL. MiR-539-3p inhibited chondrogenic differentiation in human adipose stem cells by targeting Sox9. J Orthop Surg Res 2022; 17:168. [PMID: 35303885 PMCID: PMC8932305 DOI: 10.1186/s13018-022-03053-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 03/02/2022] [Indexed: 11/26/2022] Open
Abstract
Background Mesenchymal stem cells (MSCs) have emerged as the attractive candidates for cell therapy for cartilage repair in clinical therapy of osteoarthritis (OA). MiR-539-3p was reported to differentially express during chondrogenic differentiation of adipose stem cells (ASCs) by miRNA microarrays. The aim of the study was to investigate the effects and underlying mechanisms of miR-539-3p on chondrogenic differentiation of ASCs. Methods Human ASCs (hASCs) were obtained from liposuction and transfected with miR-539-3p mimic or inhibitor. Then, the cells were cultured in chondrogenic differentiation medium including transforming growth factor-β1 (TGF-β1). Results Our results found that miR-539-3p was gradually down-regulated during chondrogenic differentiation of hASCs. MiR-539-3p overexpression inhibited TGF-β1-induced chondrogenic differentiation of hASCs, as supported by reducing the gene and protein expression of chondrogenic differentiation markers type II collagen alpha 1 (COL2A1), aggrecan (ACAN), and type II collagen. In contrast, miR-539-3p inhibitor significantly promoted the chondrogenic differentiation of hASCs. Dual luciferase reporter assay demonstrated that Sox9 was a direct target gene of miR-539-3p. The expression of SRY-box transcription factor 9 (Sox9) was up-regulated progressively over time during chondrogenic differentiation of hASCs. Additionally, Sox9 overexpression notably reversed chondrogenic differentiation of hASCs inhibited by miR-539-3p mimic, as demonstrated by the decreased expression of COL2A1, ACAN, and type II collagen. Conclusions Altogether, miR-539-3p inhibited chondrogenic differentiation of hASCs by targeting Sox9. MiR-539-3p may have significant clinical applications for use as a targeted therapy of OA.
Collapse
Affiliation(s)
- Feng Qin
- Department of Endocrinology, Qinghai University Affiliated Hospital, Xining, 810006, China
| | - Fang Wang
- Department of Gastroenterology, Qinghai University Affiliated Hospital, Xining, 810006, China
| | - Xiao-Ping Wang
- Department of the Image Center, Qinghai University Affiliated Hospital, Xining, 810006, China
| | - Jie Chen
- Department of Anesthesia, Qinghai Provincial People's Hospital, Xining, 810007, China
| | - Feng-Hua Zeng
- Department of Anesthesia, Qinghai Provincial People's Hospital, Xining, 810007, China
| | - Cui-Lan Sun
- Department of Clean Operating Room, Qinghai Provincial People's Hospital, Xining, 810007, China
| | - Jia-Cuo Peng Mao
- Department of Orthopedic, Qinghai Provincial People's Hospital, Chengdong District, No. 2 Gonghe Road, Xining, 810007, Qinghai, China
| | - Chun-Liang Li
- Department of Orthopedic, Qinghai Provincial People's Hospital, Chengdong District, No. 2 Gonghe Road, Xining, 810007, Qinghai, China.
| |
Collapse
|
10
|
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.
Collapse
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
| |
Collapse
|
11
|
Ren J, Pan G, Yang J, Xu N, Zhang Q, Li W. Circ_0000620 acts as an oncogenic factor in gastric cancer through regulating MMP2 expression via sponging miR-671-5p. JOURNAL OF BIOLOGICAL RESEARCH (THESSALONIKE, GREECE) 2021; 28:23. [PMID: 34972532 PMCID: PMC8720221 DOI: 10.1186/s40709-021-00154-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 12/10/2021] [Indexed: 04/14/2023]
Abstract
BACKGROUND Gastric cancer (GC) is one of the most common cancers in the digestive system. Circular RNAs (circRNAs) have been found to function as important regulators in the pathogenesis of GC. This study focused on the biological role and molecular mechanism of circ_0000620 in GC progression. METHODS The expression levels of circ_0000620, microRNA-671-5p (miR-671-5p) and Matrix MetalloProteinase 2 (MMP2) were measured by quantitative real-time polymerase chain reaction (qRT-PCR), immunohistochemistry (IHC) assay or western blot. The stability of circ_0000620 was confirmed by Ribonuclease R (RNase R) assay. The protein levels were determined by western blot assay. Cell viability, colony formation, cell migratory ability, cell invasive ability and tube formation capacity were respectively examined by CCK-8 assay, colony formation assay, wound healing assay, transwell invasion assay and tube formation assay. The interaction between miR-671-5p and circ_0000620 or MMP2 was validated by dual-luciferase reporter assay, RNA immunoprecipitation (RIP) assay and RNA pull-down assay. The role of circ_0000620 in GC undefined was explored by xenograft tumor assay. RESULTS Circ_0000620 was conspicuously upregulated in GC tissues and cells. Circ_0000620 knockdown reduced cell viability, colony formation, migration, invasion and tube formation capacity of GC cells in vitro. Furthermore, MMP2 was upregulated in GC and MMP2 overexpression reversed the anti-tumor response of circ_0000620 knockdown in GC progression. Moreover, circ_0000620 directly interacted with miR-671-5p and circ_0000620 downregulation regulated malignant behaviors of GC cells by upregulating miR-671-5p. In addition, silencing of circ_0000620 inhibited tumor growth in vivo. CONCLUSIONS Circ_0000620 knockdown inhibited the malignant development of GC partly through modulating the miR-671-5p/MMP2 axis.
Collapse
Affiliation(s)
- Junyu Ren
- Department of Oncology, First Affiliated Hospital of Kunming Medical University, No. 295, Xichang Road, Wuhua District, 650032, Kunming, China
| | - Guoqing Pan
- Department of Pathology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Jun Yang
- Department of Oncology, First Affiliated Hospital of Kunming Medical University, No. 295, Xichang Road, Wuhua District, 650032, Kunming, China
| | - Ning Xu
- Department of Oncology, First Affiliated Hospital of Kunming Medical University, No. 295, Xichang Road, Wuhua District, 650032, Kunming, China
| | - Qiong Zhang
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Wenliang Li
- Department of Oncology, First Affiliated Hospital of Kunming Medical University, No. 295, Xichang Road, Wuhua District, 650032, Kunming, China.
| |
Collapse
|
12
|
Circ-SFMBT2 drives the malignant phenotypes of esophageal cancer by the miR-107-dependent regulation of SLC1A5. Cancer Cell Int 2021; 21:495. [PMID: 34530825 PMCID: PMC8447765 DOI: 10.1186/s12935-021-02156-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 08/17/2021] [Indexed: 12/19/2022] Open
Abstract
Background Increasing studies focused on the regulatory roles of circular RNAs (circRNAs) in diverse cancers. This study was to evaluate the function and mechanism of circRNA Scm-like with four malignant brain tumor domains 2 (circ-SFMBT2) in esophageal cancer (EC). Methods The circ-SFMBT2, microRNA-107 (miR-107) and solute-linked carrier family A1 member 5 (SLC1A5) levels were analyzed by quantitative real-time polymerase chain reaction (qRT-PCR). Cell proliferation was evaluated by 3-(4, 5-dimethylthiazol-2-y1)-2, 5-diphenyl tetrazolium bromide (MTT) assay, colony formation assay and EdU assay. Cell apoptosis and invasion were detected by flow cytometry and transwell assay. Glutamine metabolism was assessed by the corresponding kits for glutamine consumption, α-ketoglutarate production and glutamate production. Western blot was used for protein quantification. The binding analysis was performed using dual-luciferase reporter assay, RNA immunoprecipitation (RIP) and pull-down assays. The functional research of circ-SFMBT2 in vivo was performed by xenograft tumor assay. Exosomes were identified by morphological observation and protein detection. Results Circ-SFMBT2 was overexpressed in EC samples and cells. Circ-SFMBT2 downregulation inhibited EC cell proliferation, invasion and glutamine metabolism. Circ-SFMBT2 targeted miR-107 and the regulation of circ-SFMBT2 was achieved by sponging miR-107. SLC1A5 was a target of miR-107, and it worked as an oncogene in EC cells. MiR-107 retarded the EC progression by downregulating SLC1A5. Circ-SFMBT2 could affect the SLC1A5 expression by targeting miR-107. Circ-SFMBT2 regulated EC progression in vivo by miR-107/SLC1A5 axis. Circ-SFMBT2 was transferred by exosomes in EC cells. Conclusion These results suggested that circ-SFMBT2 upregulated the SLC1A5 expression to promote the malignant development of EC by serving as a miR-107 sponge. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-02156-8.
Collapse
|