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Zhang R, Yang R, Huang Z, Xu X, Lv S, Guan X, Li H, Wu J. METTL3/YTHDC1-mediated upregulation of LINC00294 promotes hepatocellular carcinoma progression. Heliyon 2023; 9:e22595. [PMID: 38125436 PMCID: PMC10730722 DOI: 10.1016/j.heliyon.2023.e22595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 11/06/2023] [Accepted: 11/15/2023] [Indexed: 12/23/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is a highly prevalent malignancy and the third highest contributor to cancer-associated deaths globally. Research has increasingly demonstrated a strong correlation between long noncoding RNAs (lncRNAs) and the incidence and progression of HCC. Nonetheless, the exact mechanism whereby the function of lncRNAs in HCC has not been elucidated. This study explored the pathological role of LINC00294 in HCC, as well as the modulatory mechanism involved. Based on the "The Cancer Genome Atlas (TCGA)" database and validation in HCC cell lines and tissues, the expression of LINC00294 was discovered to be upregulated in HCC tissues and correlated with tumor grade and the prognosis of patients with HCC. Functionally, LINC00294 stimulated the proliferation of HCC cells as well as the Warburg effect (aerobic glycolysis) to enhance progression of tumor in vivo. Mechanistically, METTL3/YTHDC1-mediated N6-methyladenosine (m6A) modification underwent a significant enrichment within LINC00294 and was shown to enhance its RNA stability. Moreover, LINC00294 promoted the interaction between YTHDC1 and HK2 and GLUT1 mRNA. Overall, our study illustrates the m6A modification-mediated epigenetic mechanism of LINC00294 expression and regulatory role in HK2and GLUT1 mRNA expression and indicate LINC00294 as a potential biomarker panel for prognostic prediction and treatment in HCC.
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Affiliation(s)
- Rulin Zhang
- Department of Laboratory Medicine, Jiading Branch of Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201803, China
| | - Rui Yang
- Department of Laboratory Medicine, Jiading Branch of Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201803, China
- Department of Pathology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, China
- The Key Laboratory of Molecular Pathology (Hepatobiliary Diseases) of Guangxi, Baise 533000, China
| | - Zhuodeng Huang
- Department of Laboratory Medicine, Jiading Branch of Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201803, China
- Department of Pathology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, China
- The Key Laboratory of Molecular Pathology (Hepatobiliary Diseases) of Guangxi, Baise 533000, China
| | - Xiang Xu
- Department of Laboratory Medicine, Jiading Branch of Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201803, China
- Department of Pathology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, China
- The Key Laboratory of Molecular Pathology (Hepatobiliary Diseases) of Guangxi, Baise 533000, China
| | - Siang Lv
- Department of Laboratory Medicine, Jiading Branch of Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201803, China
- Department of Pathology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, China
- The Key Laboratory of Molecular Pathology (Hepatobiliary Diseases) of Guangxi, Baise 533000, China
| | - Xin Guan
- Department of Laboratory Medicine, Jiading Branch of Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201803, China
| | - Hao Li
- Organ Transplantation Clinical Medical Center of Xiamen University, Department of Organ Transplantation, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361005, Fujian, China
- Department of Pancreatic Surgery, Shanghai Cancer Center, Fudan University, Shanghai, 200032, China
| | - Jun Wu
- Department of Laboratory Medicine, Jiading Branch of Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201803, China
- Department of Pathology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, China
- The Key Laboratory of Molecular Pathology (Hepatobiliary Diseases) of Guangxi, Baise 533000, China
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Qi P, Yexie Z, Xue C, Huang G, Zhao Z, Zhang X. LINC00294/miR-620/MKRN2 axis provides biomarkers and negatively regulates malignant progression in colorectal carcinoma. Hum Exp Toxicol 2023; 42:9603271231167577. [PMID: 37218161 DOI: 10.1177/09603271231167577] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
BACKGROUND Colorectal carcinoma (CRC) ranks the third most frequent malignancy worldwide. Makorin RING zinc finger-2 (MKRN2) has been identified as a tumor suppressor in CRC, and the bioinformatics prediction indicated that some non-coding RNAs (ncRNAs) that directly or indirectly regulate MKRN2 might play critical roles in CRC progression. This study aimed to analyze the regulatory effect of LINC00294 on CRC progression, and to explore the underlying mechanisms by assessing miR-620 and MKRN2. The potential prognostic value of the ncRNAs and MKRN2 was also investigated. METHODS The expression of LINC00294, MKRN2, miR-620 was examined by qRT-PCR. Cell counting kit-8 assay was used to assess the proliferation of CRC cells. Transwell assay was used to evaluate the migration, invasion of CRC cells. Kaplan-Meier method and log-rank test were used to perform comparative analysis of overall survival in CRC patients. RESULTS Lower expression of LINC00294 was observed in both CRC tissues and cell lines. In CRC cells, LINC00294 overexpression inhibited cell proliferation, migration and invasion, but these effects were directly reversed by the overexpression of miR-620, which was demonstrated as a target of LINC00294. Additionally, MKRN2 was found to be a target gene of miR-620, and might mediate the regulatory function of LINC00294 in CRC progression. In CRC patients, low LINC00294, MKRN2 and high miR-620 expression was associated poor overall survival of CRC. CONCLUSIONS LINC00294/miR-620/MKRN2 axis had the potential to provide prognostic biomarkers for CRC patients, and negatively regulated the malignant progression of CRC cells, including proliferation, migration and invasion.
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Affiliation(s)
- Puliang Qi
- Department of Emergency Surgery, Qinghai Provincial People's Hospital, Xining, China
| | - Zhihua Yexie
- Department of Emergency Surgery, Qinghai Provincial People's Hospital, Xining, China
| | - Chen Xue
- Department of General Surgery, Qinghai Provincial People's Hospital, Xining, China
| | - Guoqiang Huang
- Department of Emergency Surgery, Qinghai Provincial People's Hospital, Xining, China
| | - Zhanxue Zhao
- Department of Emergency Surgery, Qinghai Provincial People's Hospital, Xining, China
| | - Xikun Zhang
- Department of Emergency Surgery, Qinghai Provincial People's Hospital, Xining, China
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Xu J, Feng H, Ma L, Tan H, Yan S, Fang C. Bakkenolide‑IIIa ameliorates lipopolysaccharide‑induced inflammatory injury in human umbilical vein endothelial cells by upregulating LINC00294. Mol Med Rep 2021; 23:377. [PMID: 33760129 PMCID: PMC7986008 DOI: 10.3892/mmr.2021.12016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 02/04/2021] [Indexed: 01/21/2023] Open
Abstract
Inflammation, which causes injury to vascular endothelial cells, is one of the major factors associated with atherosclerosis (AS); therefore, inhibition of endothelial inflammation is a key step toward preventing AS. The present study aimed to investigate the effects of bakkenolide-IIIa (Bak-IIIa), an important active component of bakkenolides, on endothelial inflammation, as well as the mechanisms underlying such effects. Lipopolysaccharide (LPS)-damaged human umbilical vein endothelial cells (HUVECs) were treated with Bak-IIIa. The results of the MTT assay and enzyme-linked immunosorbent assay indicated that Bak-IIIa significantly alleviated survival inhibition, and decreased the levels of LPS-induced TNF-α, interleukin (IL)-1β, IL-8, and IL-6. Furthermore, long noncoding RNA (lncRNA) microarray analyses revealed 70 differentially expressed lncRNAs (DELs) in LPS-damaged HUVECs treated with Bak-IIIa. lncRNA target prediction results revealed that 44 DELs had 52 cis-targets, whereas 12 DELs covered 386 trans-targets. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes analyses of the trans-targets indicated that three GO terms were associated with inflammation. Therefore, 17 targets involved in these GO terms and six relevant DELs were screened out. Validation via reverse transcription-quantitative PCR indicated that the fold change of NR_015451 (LINC00294) was the highest among the six candidates and that overexpression of LINC00294 significantly alleviated LPS-induced survival inhibition and inflammatory damage in HUVECs. In conclusion, Bak-IIIa ameliorated LPS-induced inflammatory damage in HUVECs by upregulating LINC00294. Thus, Bak-IIIa exhibited potential for preventing vascular inflammation.
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Affiliation(s)
- Jichong Xu
- Department of Interventional Radiology, Tongji Hospital of Tongji University, Shanghai 200065, P.R. China
| | - Hao Feng
- Department of Interventional Radiology, Tongji Hospital of Tongji University, Shanghai 200065, P.R. China
| | - Lin Ma
- Department of Interventional Radiology, Tongji Hospital of Tongji University, Shanghai 200065, P.R. China
| | - Huaqiao Tan
- Department of Interventional Radiology, Tongji Hospital of Tongji University, Shanghai 200065, P.R. China
| | - Shuo Yan
- Department of Interventional Radiology, Tongji Hospital of Tongji University, Shanghai 200065, P.R. China
| | - Chun Fang
- Department of Interventional Radiology, Tongji Hospital of Tongji University, Shanghai 200065, P.R. China
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Qiu J, Zhou S, Cheng W, Luo C. LINC00294 induced by GRP78 promotes cervical cancer development by promoting cell cycle transition. Oncol Lett 2020; 20:262. [PMID: 32989396 PMCID: PMC7517597 DOI: 10.3892/ol.2020.12125] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 05/27/2020] [Indexed: 12/17/2022] Open
Abstract
Cervical cancer is one of the most common gynecological malignancies, and it has become a crucial public health problem. In the present study, the expression profiles of cervical cancer and normal cervical tissues were downloaded from the Gene Expression Omnibus and The Cancer Genome Atlas databases. Subsequently, the dysregulated long non-coding RNAs (lncRNAs) in cervical cancer were identified using R software Differentially expressed lncRNAs in cervical cancer that were associated with glucose-regulated protein 78 (GRP78) were screened out and the results demonstrated that eight lncRNAs were strongly positively correlated with GRP78. In order to confirm the relationship between GRP78 and candidate lncRNAs, GRP78 small interfering RNA (siRNA) was transfected into HeLa cells. The target lncRNAs that were regulated by GRP78 were then identified by reverse transcription-quantitative PCR and it was revealed that LINC00294 was significantly downregulated following GRP78-knockdown. Subsequently, Gene Set Enrichment Analysis demonstrated that LINC00294 was mainly enriched in regulating the cell cycle and the Hedgehog pathway. Following transfection of HeLa and SiHa cells with LINC00294 siRNA, the cell cycle was arrested at the G0/G1 phase. Western blotting suggested that LINC00294-knockdown downregulated the expression of cell cycle-associated factors (cyclin D, cyclin E and cyclin Dependent kinase 4) and upregulated cell cycle inhibitory factors (p16 and p21). The Hedgehog pathway was inhibited following knockdown of LINC00294 in HeLa and SiHa cells. In summary, LINC00294 induced by GRP78 promoted the progression of cervical cancer by regulating the cell cycle via Hedgehog pathway.
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Affiliation(s)
- Jiangnan Qiu
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Shulin Zhou
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Wenjun Cheng
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Chengyan Luo
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
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Zhou X, Lv L, Zhang Z, Wei S, Zheng T. LINC00294 negatively modulates cell proliferation in glioma through a neurofilament medium-mediated pathway via interacting with miR-1278. J Gene Med 2020; 22:e3235. [PMID: 32450002 DOI: 10.1002/jgm.3235] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/16/2020] [Accepted: 05/22/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Accumulating long noncoding RNAs (lncRNAs) have been recognized to participate in glioma development. Nevertheless, knowledge of the role of linc00294 in glioma remains incomplete. METHODS Bioinformatics analysis predicted the differential expression of LINC00294 and neurofilament medium (NEFM) in tumors and normal tissues, as well as the binding between LINC00294 and miR-1278, miR-1278 and NEFM. Luciferase and RNA immunoprecipitation assays were used for the verification of interactions. The potential role of LINC00294 in glioma development was investigated using functional assays, singly and in parallel with its interplay with miR-1278 and NEFM. Cell counting kit-8 and EdU assays were applied to measure cellular proliferation, whereas the terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) method was employed to detect apoptosis. RESULTS A new lncRNA, LINC00294, was highly expressed in normal brain tissues. However, it was markedly down-regulated in GBM tissues and glioma cell lines. Overexpression of LINC00294 abates glioma cell proliferation but induces apoptosis. Meanwhile, tumor suppressor NEFM was revealed to be distinctly diminished in cancerous conditions and enhanced in glioma cells by LINC00294 up-regulation. Interactions of miR-1278 with LINC00294 or NEFM occur, and the expression of NEFM is up-regulated by LINC00294 through their competition with respect to binding to miR-1278. Finally, the rescue assays further confirmed that LINC00294 inhibits glioma cell proliferation by absorbing miR-1278 to enhance NEFM. CONCLUSIONS Collectively, our observations demonstrate the tumor-suppressive function of LINC00294 in glioma development by sponging miR-1278 and promoting NEFM, suggesting a potential use in therapy for glioma.
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Affiliation(s)
- Xiaokun Zhou
- Department of Neurosurgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Liang Lv
- College of Pharmacy, Guilin Medical University, Guilin, Guangxi, China
| | - Zhongyi Zhang
- Department of Neurosurgery, The Second Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Shuyang Wei
- Department of Neurosurgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Tong Zheng
- Department of Neurosurgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
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