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Lu GM, Jiang LY, Huang DL, Rong YX, Li YH, Wei LX, Ning Y, Huang SF, Mo S, Meng FH, Li HM. Advanced Platelet-Rich Fibrin Extract Treatment Promotes the Proliferation and Differentiation of Human Adipose-Derived Mesenchymal Stem Cells through Activation of Tryptophan Metabolism. Curr Stem Cell Res Ther 2023; 18:127-142. [PMID: 34872484 DOI: 10.2174/1574888x16666211206150934] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 09/25/2021] [Accepted: 11/08/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Advanced platelet-rich fibrin extract (APRFE) contains a high concentration of various cytokines that are helpful for improving stem cells repair function. OBJECTIVE However, the underlying mechanism of APRFE improving stem cell repairing is not clear. METHODS We produced APRFE by centrifuging fresh peripheral blood samples and isolated and identified human adipose-derived mesenchymal stem cells (ADMSCs). The abundance of cytokines contained in APRFE was detected by the Enzyme-linked immunosorbent assay (ELISA). The ADMSCs treated with or without APRFE were collected for transcriptome sequencing. RESULTS Based on the sequencing data, the expression profiles were contracted. The differentially expressed genes and lncRNA (DEGs and DElncRNAs) were obtained using for the differential expression analysis. The lncRNA-miRNA-mRNA network was constructed based on the miRNet database. The further enrichment analysis results showed that the biological functions were mainly related to proliferation, differentiation, and cell-cell function. To explore the role of APRFE, the protein-protein interaction network was constructed among the cytokines included in APRFE and DEGs. Furthermore, we constructed the global regulatory network based on the RNAInter and TRRUST database. The pathways in the global regulatory network were considered as the core pathways. We found that the DEGs in the core pathways were associated with stemness scores. CONCLUSION In summary, we predicted that APRFE activated three pathways (tryptophan metabolism, mTOR signaling pathway, and adipocytokine signaling) to promote the proliferation and differentiation of ADMSCs. The finding may be helpful for guiding the application of ADMSCs in the clinic.
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Affiliation(s)
- Guan-Ming Lu
- Department of Breast and Thyroid Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi, 533000, China
| | - Li-Yuan Jiang
- Department of Orthopaedics, Guiping People's Hospital, Guigping, Guangxi, 537200, China
| | - Dong-Lin Huang
- Research Center of Medical Sciences, The People's Hospital of Guangxi Zhuang Autonomous Region & Guangxi Academy of Medical Sciences, Nanning 530021, China
| | - Yong-Xian Rong
- Department of Burn and Plastic Surgery, Guiping People's Hospital, Guigping, Guangxi, 537200, China
| | - Yang-Hong Li
- Department of Breast and Thyroid Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi, 533000, China
| | - Liu-Xing Wei
- Department of Breast and Thyroid Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi, 533000, China
| | - Yan Ning
- Research Center of Medical Sciences, The People's Hospital of Guangxi Zhuang Autonomous Region & Guangxi Academy of Medical Sciences, Nanning 530021, China
| | - Shan-Fu Huang
- Department of Dermatology, The People's Hospital of Binyang County, Binyang, Guangxi, 530405, China
| | - Steven Mo
- Yuan Dong International Academy of Life Sciences, Nanning, China
| | - Fu-Han Meng
- Department of Rehabilitation Medicine, The People's Hospital of Binyang County, Binyang, Guangxi, 530405, China
| | - Hong-Mian Li
- Research Center of Medical Sciences, The People's Hospital of Guangxi Zhuang Autonomous Region & Guangxi Academy of Medical Sciences, Nanning 530021, China
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Wang Y, Liu X, Wang L, Zhang Z, Li Z, Li M. Circ_PGPEP1 Serves as a Sponge of miR-1297 to Promote Gastric Cancer Progression via Regulating E2F3. Dig Dis Sci 2021; 66:4302-4313. [PMID: 33386518 DOI: 10.1007/s10620-020-06783-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 12/11/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Circular RNA (circRNA) is a special kind of noncoding RNA that plays a vital function in the progression of gastric cancer (GC). However, the role of a new circRNA, circ_PGPEP1, in GC is unclear. AIMS Exploring the role and mechanism of circ_PGPEP1 in GC progression. METHODS The expression levels of circ_PGPEP1, miR-1297, and E2F transcription factor 3 (E2F3) were determined using quantitative real-time PCR. Flow cytometry, colony formation assay, MTT assay, and transwell assay were used to evaluate cell cycle, apoptosis, proliferation, migration, and invasion. The protein levels of apoptosis-related markers and E2F3 were measured by western blot analysis. The interaction between circ_PGPEP1 and miR-1297 or miR-1297 and E2F3 was confirmed by dual-luciferase reporter assay. In addition, animal experiments were performed to assess the effect of circ_PGPEP1 on GC tumor growth in vivo. RESULTS Circ_PGPEP1 was a highly expressed circRNA in GC. Loss-of-function experiment indicated that circ_PGPEP1 silencing could induce cell cycle arrest and apoptosis, while inhibit proliferation, migration, and invasion in GC cells. MiR-1297 could be sponged by circ_PGPEP1, and its expression was downregulated in GC. MiR-1297 inhibitor could reverse the negatively regulation of circ_PGPEP1 knockdown on GC progression. Furthermore, we also found that E2F3 could be targeted by miR-1297, and its expression was positively regulated by circ_PGPEP1. Overexpression of E2F3 could invert the inhibitory effect of miR-1297 on GC progression. Animal experiments suggested that silenced circ_PGPEP1 could reduce GC tumor growth. CONCLUSION Our research showed that circ_PGPEP1 might serve as a potential biomarker for GC.
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Affiliation(s)
- Yingxin Wang
- Department of General Surgery, Shijiazhuang People's Hospital, No. 365 Jianhuanan Street, Shijiazhuang, 050031, Hebei, China
| | - Xia Liu
- Department of Forensic Pathology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China
| | - Liwei Wang
- Department of General Surgery, Shijiazhuang People's Hospital, No. 365 Jianhuanan Street, Shijiazhuang, 050031, Hebei, China
| | - Zhenduo Zhang
- Department of General Surgery, Shijiazhuang People's Hospital, No. 365 Jianhuanan Street, Shijiazhuang, 050031, Hebei, China
| | - Zhong Li
- Department of General Surgery, Shijiazhuang People's Hospital, No. 365 Jianhuanan Street, Shijiazhuang, 050031, Hebei, China
| | - Ming Li
- Department of General Surgery, Shijiazhuang People's Hospital, No. 365 Jianhuanan Street, Shijiazhuang, 050031, Hebei, China.
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Zhang Q, Liu XJ, Li Y, Ying XW, Chen L. Prognostic Value of Immune-Related lncRNA SBF2-AS1 in Diffuse Lower-Grade Glioma. Technol Cancer Res Treat 2021; 20:15330338211011966. [PMID: 34159865 PMCID: PMC8226362 DOI: 10.1177/15330338211011966] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
LncRNA SET-binding factor 2 (SBF2) antisense RNA1 (SBF2-AS1) has been proven to
play an oncogenic role in various types of tumors, but the prognostic role of
SBF2-AS1 in tumors, especially in diffuse lower-grade glioma (LGG), is still
unclear. Here, we aimed to investigate the prognostic value of SBF2-AS1 in LGG.
The LGG expression profiles from The Cancer Genome Atlas (TCGA,
n = 524) and Chinese Glioma Genome Atlas (CGGA,
n = 431) were mined by Kaplan-Meier analysis, Cox
regression analysis, Chi-square test and GSEA analysis. Through Kaplan-Meier
analysis, we found the prognosis of LGG patients with high expression of
SBF2-AS1 were worse than that of patients with low expression (Log Rank
P < 0.001). Cox analysis showed SBF2-AS1 was an
independent prognostic factor for poorer overall survival in LGG
(P < 0.05). SBF2-AS1 was found to be significantly
related to IDH mutation status and SBF2-AS1 was highly expressed in IDH wildtype
group. GSEA analysis obtained a total of 126 GO terms and 6 KEGG pathways that
were significantly enriched in SBF2-AS1 high expression phenotype (NOM
P value < 0.05). We found these 126 GO terms and KEGG
pathways were mainly related to immunity. In conclusion, lncRNA SBF2-AS1
expression is an immune-related lncRNA associated with unfavorable overall
survival in LGG. SBF2-AS1 could be a reliable prognostic biomarker for patients
with LGG.
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Affiliation(s)
- Qiang Zhang
- Department of Clinical laboratory, The People's Hospital of Lishui, Lishui, Zhejiang, China
| | - Xiao-Jun Liu
- External Liaison Office, The Central Hospital of Lishui City, Lishui, Zhejiang, China
| | - Yang Li
- The Emergency Department, The Central Hospital of Lishui City, Lishui, Zhejiang, China
| | - Xiao-Wei Ying
- Department of Hepatopancreatobiliary Surgery, The People's Hospital of Lishui, Lishui, Zhejiang, China
| | - Lu Chen
- Department of Hepatopancreatobiliary Surgery, The People's Hospital of Lishui, Lishui, Zhejiang, China
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Xiong X, Feng J, Yang X, Li H, Shi Q, Tao J, Chang J. Circular RNA CDR1as promotes tumor progression by regulating miR-432-5p/E2F3 axis in pancreatic cancer. Cancer Cell Int 2021; 21:112. [PMID: 33593338 PMCID: PMC7885204 DOI: 10.1186/s12935-021-01812-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/05/2021] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Pancreatic cancer (PC), characterized with high growth rate and metastatic rate. It's urgently necessary to explore new mechanism of PC. Circular RNA/miRNA/mRNA network was widely reported to participate in the cancer progression. METHODS In this research, circular RNA CDR1as (circCDR1as) was identified by microarray analysis and detected in pancreatic cancer (PC) tissues and cells. Transwell, colony-forming assay, nude mouse tumorigenicity assay were used to determine the function of circCDR1as in PC. Western blot, dual luciferase reporting test were applied to investigate the mechanism. RESULTS We found that circCDR1as was highly expressed in PC tissues. The levels of circCDR1as in PC tissues and cells were higher than those in controls. CircCDR1as promoted the migration, invasion and proliferation of PC cells in vitro and tumor growth in vivo via mediating E2F3 expression by sponging miR-432-5p. CONCLUSIONS In conclusion, circCDR1as could promote the development of PC and might be a novel diagnostic target for PC.
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Affiliation(s)
- Xingcheng Xiong
- Department of Pancreatic Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, China
| | - Jiarui Feng
- Department of Medical Management, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, China
| | - Xiao Yang
- Department of Hepatobiliary Surgery, Qianjiang Central Hospital of Hubei Province, 22 Zhanghua Middle Road, Qianjiang, 433199, Hubei, China.,Department of Hepatobiliary Surgery, Qianjiang Hospital Affiliated to Renmin Hospital of Wuhan University, 22 Zhanghua Middle Road, Qianjiang, 433199, Hubei, China.,Department of Hepatobiliary Surgery, Qianjiang Clinical Medical College, Health Science Center, Yangtze University, 22 Zhanghua Middle Road, Qianjiang, 433199, Hubei, China
| | - Hanjun Li
- Department of Pancreatic Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, China
| | - Qiao Shi
- Department of Pancreatic Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, China
| | - Jing Tao
- Department of Pancreatic Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, China.
| | - Jian Chang
- Department of Pancreatic Surgery, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, China.
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Zha W, Li X, Tie X, Xing Y, Li H, Gao F, Ye T, Du W, Chen R, Liu Y. The molecular mechanisms of the long noncoding RNA SBF2-AS1 in regulating the proliferation of oesophageal squamous cell carcinoma. Sci Rep 2021; 11:805. [PMID: 33436941 PMCID: PMC7804443 DOI: 10.1038/s41598-020-80817-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 12/28/2020] [Indexed: 12/24/2022] Open
Abstract
The long noncoding RNASBF2-AS1 can promote the occurrence and development of many kinds of tumours, but its role in oesophageal squamous cell carcinoma (ESCC) is unknown. We found that SBF2-AS1 was up-regulated in ESCC, and its expression was positively correlated with tumor size (P = 0.0001), but was not related to gender, age, TNM stage, histological grade, and lymphnode metastasis (P > 0.05). It was further found that the higher the expression of SBF2-AS1, the lower the survival rate. COX multivariate analysis showed that the expression of SBF2-AS1 was an independent prognostic factor. Functional experiments show that inhibition of SBF2-AS1 can inhibit the proliferation of ESCC through in vivo and in vitro, and overexpression of SBF2-AS1 can promote the proliferation of ESCC and inhibit its apoptosis. In mechanism, SBF2-AS1/miR-338-3P, miR-362-3P/E2F1 axis are involved in the regulation of ESCC growth. In general, SBF2-AS1 may be used as ceRNA to combine with miR-338-3P and miR-362-3P to up-regulate the expression ofE2F1, and ultimately play a role in promoting cancer. It may be used as a therapeutic target and a biomarker for prognosis.
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Affiliation(s)
- Wenjuan Zha
- Department of Radiotherapy, Taixing People's Hospital Affiliated with Bengbu Medical College, Bengbu, China
| | - Xiaomin Li
- Department of Radiotherapy, Taixing People's Hospital Affiliated with Bengbu Medical College, Bengbu, China
| | - Xiaowei Tie
- Department of Radiotherapy, Taixing People's Hospital Affiliated with Bengbu Medical College, Bengbu, China
| | - Yao Xing
- Department of Radiotherapy, Taixing People's Hospital Affiliated with Bengbu Medical College, Bengbu, China
| | - Hao Li
- Department of Clinical Laboratory, Taixing People's Hospital, Taixing, China
| | - Fei Gao
- Department of Radiotherapy, Taixing People's Hospital, Taixing, 225400, China
| | - Ting Ye
- Department of Clinical Laboratory, Taixing People's Hospital, Taixing, China
| | - Wangqi Du
- Department of Clinical Laboratory, Taixing People's Hospital, Taixing, China
| | - Rui Chen
- Department of Taixing People's Hospital Affiliated with Yangzhou University, Yangzhou, 225000, China.
| | - Yangchen Liu
- Department of Radiotherapy, Taixing People's Hospital, Taixing, 225400, China.
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Yang X, Meng L, Zhong Y, Hu F, Wang L, Wang M. The long intergenic noncoding RNA GAS5 reduces cisplatin-resistance in non-small cell lung cancer through the miR-217/LHPP axis. Aging (Albany NY) 2021; 13:2864-2884. [PMID: 33418541 PMCID: PMC7880381 DOI: 10.18632/aging.202352] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 11/03/2020] [Indexed: 12/20/2022]
Abstract
Long noncoding RNAs (lncRNAs) are known to exert their effects to tumor progression. In this study, the role of the lncRNA GAS5 (growth arrest specific 5) was confirmed in reducing non-small cell lung cancer (NSCLC) cisplatin (DDP) resistance. In NSCLC tissue samples, GAS5 expression decreased significantly. Low GAS5 levels were positively correlated with NSCLC characteristics including TNM, tumor size and lymphatic metastasis. Functionally, GAS5 significantly reduced NSCLC/DDP cell migration, invasion and epithelial-mesenchymal transition (EMT) progression in vitro. In vivo, GAS5 upregulation inhibited remarkably NSCLC/DDP cell tumor growth. Mechanism analysis suggested that GAS5 was a molecular sponge of miR-217, inhibiting the expression of phospholysine phosphohistidine inorganic pyrophosphate phosphatase (LHPP). In conclusion, this study reveals that the GAS5/miR-217/LHPP pathway reduces NSCLC cisplatin resistance and that LHPP may serve as a potential therapeutic target for NSCLC cisplatin resistance.
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Affiliation(s)
- Xuhui Yang
- Department of Thoracic Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Lifei Meng
- Department of Thoracic Surgery, Ningbo First Hospital, Ningbo, China
| | - Yuang Zhong
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Fengqing Hu
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Lei Wang
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Mingsong Wang
- Department of Thoracic Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
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Chen Q, Guo SM, Huang HQ, Huang GP, Li Y, Li ZH, Huang R, Xiao L, Fan CR, Yuan Q, Zheng SL. Long noncoding RNA SBF2-AS1 contributes to the growth and metastatic phenotypes of NSCLC via regulating miR-338-3p/ADAM17 axis. Aging (Albany NY) 2020; 12:17902-17920. [PMID: 32976115 PMCID: PMC7585082 DOI: 10.18632/aging.103332] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 03/31/2020] [Indexed: 01/24/2023]
Abstract
Non-small cell lung cancer (NSCLC) is a type of refractory malignant lung cancer with a high rate of metastasis and mortality. Currently, long non-coding RNA (lncRNA) SBF2 Antisense RNA 1 (SBF2-AS1) is considered as a biomarker for a variety of tumors. However, the function of SBF2-AS1 in the growth and metastasis of NSCLC needs to be further studied. In this study, we revealed that SBF2-AS1 was overexpressed in NSCLC tissues compared with that in normal tissues. SBF2-AS1 silencing restrained the growth and aggressive phenotypes of NSCLC cell in vitro. Consistently, SBF2-AS1 knockdown hindered the growth of NSCLC cell in nude mice. The following luciferase reporter gene assay and RNA immunoprecipitation (RIP) assay suggested the relationship between miR-338-3p and SBF2-AS1. The rescue experiments showed that miR-338-3p inhibitor abolished SBF2-AS1 silencing caused inhibition on the growth, migration and invasiveness of NSCLC cell. The luciferase reporter assay and immunoblotting assay validated that A Disintegrin and Metalloprotease 17 (ADAM17) was a target of miR-338-3p. In addition, SBF2-AS1 positively regulated the level of ADAM17 through sponging for miR-338-3p. Finally, we revealed that SBF2-AS1 contributed to the proliferation and metastatic phenotypes of NSCLC cell via regulating miR-338-3p/ADAM17 axis.
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Affiliation(s)
- Qi Chen
- Nursing Department, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Sheng Min Guo
- Rehabilitation Department, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Hou Qiang Huang
- Nursing Department, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Guo Ping Huang
- Laboratory Medicine, Zigong Maternal and Child Care Service Centre, Zigong 643000, Sichuan, China
| | - Yi Li
- School of Basic Medicine, Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Zi Hui Li
- Nursing Department, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Run Huang
- School of Basic Medicine, Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Lu Xiao
- Nursing Department, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Chun Rong Fan
- Nursing Department, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Qing Yuan
- School of Basic Medicine, Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Si Lin Zheng
- Nursing Department, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China
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Circular RNA circ_HN1 facilitates gastric cancer progression through modulation of the miR-302b-3p/ROCK2 axis. Mol Cell Biochem 2020; 476:199-212. [PMID: 32949310 DOI: 10.1007/s11010-020-03897-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 09/02/2020] [Indexed: 02/07/2023]
Abstract
Gastric cancer (GC) is a malignant tumor with high morbidity and mortality in the world. Circular RNA hsa_circHN1_005 (circ_HN1), also termed as hsa_circ_0045602, is reported as an oncogene in GC. However, the molecular mechanism of circ_HN1 in GC development has not been fully explored. Here, we surveyed the regulatory mechanism of circ_HN1 in GC progression. The levels of circ_HN1, miR-302b-3p, and rho-associated coiled-coil containing protein kinase 2 (ROCK2) mRNA were measured by quantitative real-time polymerase chain reaction (qRT-PCR). Cell proliferation, apoptosis, colony formation, cell cycle progresion, migration, and invasion were determined by using cell counting, flow cytometry, colony formation, or transwell assays. Protein levels were detected with Western blotting. The relationship between circ_HN1 or ROCK2 and miR-302b-3p was verified via dual luciferase reporter or RNA immunoprecipitation (RIP) assays. The role of circ_HN1 in vivo was confirmed by xenograft assay. We observed that circ_HN1 and ROCK2 were upregulated while miR-302b-3p was downregulated in GC tissues and cells. Circ_HN1 silencing slowed tumor growth in vivo and impeded cell proliferation migration, invasion, and facilitated cell apoptosis in GC cells in vitro. Circ_HN1 sponged miR-302b-3p to regulate ROCK2 expression. MiR-302b-3p inhibitor reversed circ_HN1 silencing-mediated influence on the malignant behaviors of GC cells. Furthermore, ROCK2 overexpression restored miR-302b-3p mimic-mediated impacts on cell malignant behaviors in GC cells. In conclusion, circ_HN1 exerted an oncogenic role in GC through upregulating ROCK2 via sponging miR-302b-3p, offering evidence that circ_HN1 is a potential target for GC therapy.
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Long Noncoding RNASBF2-AS1 Promotes Gastric Cancer Progression via Regulating miR-545/EMS1 Axis. BIOMED RESEARCH INTERNATIONAL 2020; 2020:6590303. [PMID: 32626753 PMCID: PMC7306839 DOI: 10.1155/2020/6590303] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 04/07/2020] [Indexed: 02/07/2023]
Abstract
Objective Long noncoding RNA (LncRNA) SBF2-AS1 was reportedly to function as an oncogene in several types of cancers, such as hepatocellular carcinoma, nonsmall cell lung cancer, glioma, and colorectal cancer. However, the biological roles and regulatory mechanisms of SBF2-AS1 in gastric cancer (GC) are unknown. Methods The expression of SBF2-AS1 and miR-545 were examined in GC tissues and cell lines via real-time quantitative PCR. The relationship of SBF2-AS1 with miR-545 was verified via dual-luciferase reporter gene assay and RNA immunoprecipitation. The influences of SBF2-AS1 on cell proliferation, migration, and invasion were determined using cell counting Kit-8 (CCK-8), wound healing, and transwell invasion assays, respectively. Results LncRNA SBF2-AS1 expression was upregulated in GC tissues, especially in advanced clinical stage cases. Moreover, increased SBF2-AS1 indicated a poor survival rate. Functionally, the downregulation of SBF2-AS1 by siRNA in GC cells suppressed the proliferation, migration, and invasion. In terms of mechanism, SBF2-AS1 can directly bind to miR-545 and regulate its expression. Moreover, SBF2-AS1 knockdown significantly decreased the expression of EMS1, which was the direct target of miR-545. Importantly, inhibition of miR-545 or overexpression of EMS1 partially reversed SBF2-AS1-depletion-caused suppression on proliferation, migration, and invasion. Conclusion These findings elucidated a crucial role of SBF2-AS1 as a miR-545 sponge in GC cells, suggesting that SBF2-AS1 might be a potential target for GC.
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