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Zhang Y, Guo S, Mao T, Guo J, Zhang Q, Tian Z, Li X. Tumor-Derived Exosomal LINC01480 Upregulates VCAM1 Expression by Acting as a Competitive Endogenous RNA of miR-204-5p to Promote Gastric Cancer Progression. ACS Biomater Sci Eng 2024; 10:550-562. [PMID: 38133901 DOI: 10.1021/acsbiomaterials.3c00394] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Exosomes are a type of cell-derived vesicles that range in size from 30 to 100 nm. They are widely present in various organisms and participate in diverse biological processes, playing crucial roles in tumorigenesis and progression. This study aimed to investigate whether LINC01480 in tumor-derived exosomes is involved in the molecular mechanism of gastric cancer by competitively upregulating the VCAM1 expression through binding miR-204-5p. The study analyzed transcriptome data related to gastric cancer from the cancer genome atlas database and constructed a risk-scoring model for epithelial-mesenchymal transition (EMT)-related lncRNAs to identify eight EMT-related lncRNAs associated with prognosis. EMT-related mRNAs positively correlated with LINC01480 were screened in the ExoRBase database. In vitro cell experiments showed that exosomal LINC01480 can promote the proliferation, migration, invasion, and EMT of gastric cancer cells by upregulating VCAM1 expression through competitive binding with miR-204-5p. In vivo experiments on nude mice showed that exosomal LINC01480 promotes the development of gastric cancer. These results suggest that exosomal LINC01480 could be a potential therapeutic target for gastric cancer.
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Affiliation(s)
- Yu Zhang
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao 266000, P. R. China
| | - Shan Guo
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao 266000, P. R. China
| | - Tao Mao
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao 266000, P. R. China
| | - Jing Guo
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao 266000, P. R. China
| | - Qi Zhang
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao 266000, P. R. China
| | - Zibin Tian
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao 266000, P. R. China
| | - Xiaoyu Li
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao 266000, P. R. China
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Yang H, Chen Y, Zeng M, Wu H, Zou X, Fang T, Zhai L, Liang H, Luo H, Tian G, Liu Q, Tang H. Long non-coding RNA LINC01480 is activated by Foxo3a and promotes hydroquinone-induced TK6 cell apoptosis by inhibiting the PI3K/AKT pathway. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 255:114786. [PMID: 36934544 DOI: 10.1016/j.ecoenv.2023.114786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 03/04/2023] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
Long non-coding RNAs (lncRNAs) have been shown to play a critical role in the damage caused to the body by environmental exogenous chemicals; however, few studies have explored their effects during exposure to benzene and its metabolite, hydroquinone (HQ). An emerging lncRNA, LINC01480, was found to be associated with the immune microenvironment of some cancers, but its specific function remains unknown. Therefore, this study aimed to investigate the role of LINC01480 in HQ-induced apoptosis. The biological function of LINC01480 was investigated through gain-of-function and loss-of-function experiments. Mechanically, nuclear-cytoplasmic fractionation experiment, chromatin immunoprecipitation (ChIP), dual-luciferase reporter assay, and rescue experiments were performed. In this study, when TK6 cells were treated with HQ (0, 5, 10, and 20 μM) for 12, 24, 48, and 72 h, the expression of LINC01480 was increased in a dose-dependent manner. Meanwhile, the phosphorylation levels of PI3K and AKT decreased, and apoptosis increased. As compared to the control group, HQ-induced apoptosis was significantly reduced, and the relative survival rate of TK6 cells increased after silencing LINC01480, while overexpression of LINC01480 further sensitized TK6 cells to HQ-induced apoptotic cell death. LINC01480 negatively regulated the PI3K/AKT pathway in TK6 cells, and the apoptosis-inhibiting effect of LINC01480 silencing was reversed after inhibition of the PI3K/AKT pathway. In addition, ChIP and the dual-luciferase reporter assays showed that the transcription factor Foxo3a promoted LINC01480 transcription by directly binding to the promoter regions - 149 to - 138 of LINC01480. Moreover, short-term HQ exposure promoted the expression of Foxo3a. From these findings, we can conclude that LINC01480 is activated by Foxo3a, and promotes HQ-induced apoptosis by inhibiting the PI3K/AKT pathway, suggesting that LINC01480 might become a possible target for therapeutic intervention of HQ-induced toxicity.
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Affiliation(s)
- Hui Yang
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523808, Guangdong, China; Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, Guangdong, China
| | - Yuting Chen
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523808, Guangdong, China; Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, Guangdong, China
| | - Minjuan Zeng
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, Guangdong, China
| | - Haipeng Wu
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, Guangdong, China
| | - Xiangli Zou
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, Guangdong, China
| | - Tiantian Fang
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, Guangdong, China
| | - Lu Zhai
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, Guangdong, China
| | - Hairong Liang
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, Guangdong, China
| | - Hao Luo
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, Guangdong, China
| | - Gaiqin Tian
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, Guangdong, China
| | - Qizhan Liu
- Center for Global Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China; Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Jiangsu Collaborative Innovation Center for Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China
| | - Huanwen Tang
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523808, Guangdong, China; Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, Guangdong, China.
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Huang K, Mei K, Duan J, Wang R, Yang C, Wang B, Gu R, Yang L. Identification and validation of ferroptosis-related genes and immune infiltration in ischemic cardiomyopathy. Front Cardiovasc Med 2023; 10:1078290. [PMID: 36895830 PMCID: PMC9989975 DOI: 10.3389/fcvm.2023.1078290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 01/31/2023] [Indexed: 02/25/2023] Open
Abstract
Background Cardiomyocyte death is an important pathophysiological basis for ischemic cardiomyopathy (ICM). Many studies have suggested that ferroptosis is a key link in the development of ICM. We performed bioinformatics analysis and experiment validation to explore the potential ferroptosis-related genes and immune infiltration of ICM. Methods We downloaded the datasets of ICM from the Gene Expression Omnibus database and analyzed the ferroptosis-related differentially expressed genes (DEGs). Gene Ontology, Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis, and protein-protein interaction network were performed to analyze ferroptosis-related DEGs. Gene Set Enrichment Analysis was used to evaluate the gene enrichment signaling pathway of ferroptosis-related genes in ICM. Then, we explored the immune landscape of patients with ICM. Finally, the RNA expression of the top five ferroptosis-related DEGs was validated in blood samples from patients with ICM and healthy controls using qRT-PCR. Results Overall, 42 ferroptosis-related DEGs (17 upregulated and 25 downregulated genes) were identified. Functional enrichment analysis indicated several enriched terms related to ferroptosis and the immune pathway. Immunological analysis suggested that the immune microenvironment in patients with ICM is altered. The immune checkpoint-related genes (PDCD1LG2, LAG3, and TIGIT) were overexpressed in ICM. The qRT-PCR results showed that the expression levels of IL6, JUN, STAT3, and ATM in patients with ICM and healthy controls were consistent with the bioinformatics analysis results from the mRNA microarray. Conclusion Our study showed significant differences in ferroptosis-related genes and functional pathway between ICM patients and healthy controls. We also provided insight into the landscape of immune cells and the expression of immune checkpoints in patients with ICM. This study provides a new road for future investigation of the pathogenesis and treatment of ICM.
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Affiliation(s)
- Kai Huang
- Department of Cardiology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Kun Mei
- Department of Cardiothoracic Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Jiahao Duan
- Department of Cardiology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Ruting Wang
- Department of Cardiology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Chun Yang
- Department of Anesthesiology and Perioperative Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Bin Wang
- Department of Cardiothoracic Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Renjun Gu
- Nanjing University of Chinese Medicine, Nanjing, China.,School of Chinese Medicine and School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Ling Yang
- Department of Cardiology, The Third Affiliated Hospital of Soochow University, Changzhou, China
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