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Chen J, He Y, Zhou L, Deng Y, Si L. Long non‑coding RNA MALAT1 serves as an independent predictive biomarker for the diagnosis, severity and prognosis of patients with sepsis. Mol Med Rep 2020; 21:1365-1373. [PMID: 31922243 DOI: 10.3892/mmr.2020.10923] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 10/03/2019] [Indexed: 11/06/2022] Open
Abstract
The present prospective study was conducted to investigate the independent risk and predictive value of plasma long non‑coding RNA metastasis‑associated lung adenocarcinoma transcript 1 (MALAT1) as a biomarker for the diagnosis, severity and prognosis of sepsis. A total of 120 patients with sepsis and 60 healthy controls (HCs) were recruited. The expression levels of plasma MALAT1 were detected by quantitative PCR. The results demonstrated that the plasma levels of MALAT1 were significantly increased in patients with sepsis compared with HCs (P<0.001), in patients with septic shock compared with in patients without septic shock (P<0.001), and in non‑survivors compared with in survivors (P<0.001). MALAT1 plasma levels exhibited weak positive correlation with serum procalcitonin levels (r=0.253; P=0.005), arterial lactate levels (r=0.488; P<0.001), sepsis‑related organ failure assessment scores (r=0.566; P<0.001), and acute physiology and chronic health evaluation II scores (r=0.517; P<0.001) in patients with sepsis. Multivariate logistic regression analysis revealed that high MALAT1 expression was an independent risk factor for sepsis (P<0.001), septic shock (P=0.030) and poor prognosis (P=0.015). In addition, the receiver operating characteristic curve exhibited a significant predictive value for MALAT1 in distinguishing patients with sepsis from HCs with an area under the curve (AUC) of 0.910, patients with septic shock from patients without shock with an AUC of 0.836, and non‑survivors from survivors with an AUC of 0.886. In conclusion, plasma MALAT1 may serve as a biomarker for the diagnosis, severity and prognosis of sepsis.
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Affiliation(s)
- Jianjun Chen
- Department of Intensive Care Medicine, The First People's Hospital of Yancheng, Yancheng, Jiangsu 224000, P.R. China
| | - Yingfeng He
- Department of Intensive Care Medicine, The First People's Hospital of Yancheng, Yancheng, Jiangsu 224000, P.R. China
| | - Liangliang Zhou
- Department of Intensive Care Medicine, The First People's Hospital of Yancheng, Yancheng, Jiangsu 224000, P.R. China
| | - Yijun Deng
- Department of Intensive Care Medicine, The First People's Hospital of Yancheng, Yancheng, Jiangsu 224000, P.R. China
| | - Linjie Si
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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302
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Progress in the study of long noncoding RNA in tongue squamous cell carcinoma. Oral Surg Oral Med Oral Pathol Oral Radiol 2020; 129:51-58. [DOI: 10.1016/j.oooo.2019.08.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 08/13/2019] [Accepted: 08/25/2019] [Indexed: 12/12/2022]
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303
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Cao DW, Liu MM, Duan R, Tao YF, Zhou JS, Fang WR, Zhu JR, Niu L, Sun JG. The lncRNA Malat1 functions as a ceRNA to contribute to berberine-mediated inhibition of HMGB1 by sponging miR-181c-5p in poststroke inflammation. Acta Pharmacol Sin 2020; 41:22-33. [PMID: 31431734 PMCID: PMC7471439 DOI: 10.1038/s41401-019-0284-y] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 06/30/2019] [Indexed: 12/11/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) have been identified as essential mediators in neurological dysfunction. Our previous study shows that berberine (BBR) hampers the nuclear-to-cytosolic translocation of high-mobility group box 1 (HMGB1) in the process of poststroke inflammation. In this study, we explored the role of lncRNA metastasis-associated lung adenocarcinoma transcript 1 (Malat1) in the process of BBR-induced inhibition of HMGB1 in ischemic brain. Before the 60-min MCAO surgery, the mice were pretreated with BBR (50 mg· kg-1 per day, ig) for 14 days or ICV injected with specific lentiviral vector or shRNA. We showed that MCAO caused marked increase in the expression Malat1 and HMGB1 in the ipsilateral cortex, which was significantly attenuated by pretreatment with BBR. Knockdown of Malat1 attenuated the inflammatory injury after brain ischemia, whereas overexpression of Malat1 exacerbated ischemic brain inflammation. Overexpression of Malat1 also reversed BBR-induced reduction of HMGB1 and proinflammatory cytokines. The above results suggested a potential correlation between Malat1 and stroke inflammation. Based on informatics analysis we predicted that HMGB1 was a direct downstream target of miR-181c-5p, whereas Malat1 acted as a competitive endogenous RNA (ceRNA) for miR-181c-5p targeted the 3'-UTR of HMGB1 to promote inflammation after ischemic stroke. Knockdown of Malat1 significantly decreased HMGB1 level, which could be abrogated by transfection with miR-181c-5p inhibitors. Taken together, our results demonstrate for the first time that Malat1/miR-181c-5p/HMGB1 axis may be a key pathway of BBR-induced antiinflammation effects in stroke, and they may provide a novel avenue for targeted therapy.
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304
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Chen Z, Wu H, Zhang Z, Li G, Liu B. LINC00511 accelerated the process of gastric cancer by targeting miR-625-5p/NFIX axis. Cancer Cell Int 2019; 19:351. [PMID: 31889903 PMCID: PMC6933746 DOI: 10.1186/s12935-019-1070-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 12/12/2019] [Indexed: 01/26/2023] Open
Abstract
Background Gastric cancer (GC) is a common-sighted cancer which is hard to cure over the world. Substantial researches revealed that long non-coding RNAs (lncRNAs) were fundamental regulators in the process of cancers. Nevertheless, the biological function of LINC00511 and how LINC00511 was involved in the regulatory system in GC remained unclear. Methods RIP assays and luciferase reporter assays were performed to illustrate combination between LINC00511 and miR-625-5p. Loss-of-function assays were applied for identifying LINC00511 function in GC. Results In our study, LINC00511 was discovered significantly high in expression in GC tissues and cell lines. Moreover, LINC00511 showed a strong expression in I/II and III/IV stage. Knockdown of LINC00511 could inhibit the cell proliferation while enhanced cell apoptosis rate in GC. We used nuclear–cytoplasmic fractionation to judge the subcellular localization of LINC00511. Furthermore, miR-625-5p was found to have binding sites for LINC00511 and negatively regulated by LINC00511. Overexpression of miR-625-5p repressed the course of GC. And knockdown of miR-625-5p could recover the effects of LINC00511 silence. Besides, NFIX was discovered as a downstream target of miR-625-5p and overexpression of NFIX could offset the influence of LINC00511 silence. The results of vivo studies manifested that down-regulation of LINC00511 could reduce the Ki67 expression and NFIX while lifted the expression of miR-625-5p. Conclusion Overall, the results from our study demonstrated that LINC00511 could function as a tumor promoter by targeting miR-625-5p NFIX axis, suggesting LINC00511 could be considered as a target for GC treatment.
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Affiliation(s)
- Zhaosheng Chen
- Department of Gastroenterology, The Second Hospital of Shandong University, No. 247, Beiyuan Street, Ji Nan, 250033 Shandong China
| | - Honglei Wu
- Department of Gastroenterology, The Second Hospital of Shandong University, No. 247, Beiyuan Street, Ji Nan, 250033 Shandong China
| | - Zhen Zhang
- Department of Gastroenterology, The Second Hospital of Shandong University, No. 247, Beiyuan Street, Ji Nan, 250033 Shandong China
| | - Guangchun Li
- Department of Gastroenterology, The Second Hospital of Shandong University, No. 247, Beiyuan Street, Ji Nan, 250033 Shandong China
| | - Bin Liu
- Department of Gastroenterology, The Second Hospital of Shandong University, No. 247, Beiyuan Street, Ji Nan, 250033 Shandong China
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305
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Zhao M, Xin XF, Zhang JY, Dai W, Lv TF, Song Y. LncRNA GMDS-AS1 inhibits lung adenocarcinoma development by regulating miR-96-5p/CYLD signaling. Cancer Med 2019; 9:1196-1208. [PMID: 31860169 PMCID: PMC6997056 DOI: 10.1002/cam4.2776] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 11/18/2019] [Accepted: 11/28/2019] [Indexed: 12/16/2022] Open
Abstract
According to the global cancer statistic, lung cancer is one of the most dangerous tumors, which poses a serious threat to human health. Exploration the mechanism of lung cancer and new targeted therapeutic measures is always the hot topic. Long noncoding RNA (lncRNA) is an important factor affecting the development of tumors. However, the research on the mechanism of lncRNA in the progress of lung cancer needs to be further expanded. In this study, we found that the expression of lncRNA GMDS-AS1 was significantly reduced in lung adenocarcinoma (LUAD) tissues and cells. Upregulated GMDS-AS1 can significantly inhibit the proliferation of LUAD cells and promote cell apoptosis in vitro and in vivo. The results indicate that GMDS-AS1 acts as a tumor suppressor gene to affect the development of LUAD. Further studies revealed that GMDS-AS1 is a target gene of miR-96-5p, and GMDS-AS1 regulates proliferation and apoptosis of LUAD cells in association with miR-96-5p. In addition, we also confirmed that CYLD lysine 63 deubiquitinase (CYLD) is also a target gene of miR-96-5p. Through various validations, we confirmed that GMDS-AS1 can act as a ceRNA to upregulate the expression of CYLD by sponging miR-96-5p. Moreover, the intervention of GMDS-AS1/miR-96-5p/CYLD network can regulate the proliferation and apoptosis of LUAD cells. In this study, we revealed that the GMDS-AS1/miR-96-5p/CYLD network based on ceRNA mechanism plays an important role in the development of LUAD and provides a new direction and theoretical basis for targeted therapy of LUAD.
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Affiliation(s)
- Ming Zhao
- Department of Respiratory Medicine, Jinling Hospital, Second Military Medical University, Nanjing, China
| | - Xiao-Feng Xin
- Department of Respiratory Medicine, Jinling Hospital, Second Military Medical University, Nanjing, China
| | - Jian-Ya Zhang
- Department of Respiratory Medicine, Jinling Hospital, Second Military Medical University, Nanjing, China
| | - Wei Dai
- Department of Respiratory Medicine, Jinling Hospital, Second Military Medical University, Nanjing, China
| | - Tang-Feng Lv
- Department of Respiratory Medicine, Jinling Hospital, Second Military Medical University, Nanjing, China
| | - Yong Song
- Department of Respiratory Medicine, Jinling Hospital, Second Military Medical University, Nanjing, China
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306
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Cissé Y, Bai L, Chen MT. LncRNAs in ocular neovascularizations. Int J Ophthalmol 2019; 12:1959-1965. [PMID: 31850182 PMCID: PMC6901876 DOI: 10.18240/ijo.2019.12.19] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 05/29/2019] [Indexed: 12/13/2022] Open
Abstract
The prevalence of eye diseases worldwide is dramatically increasing and represents a major concern in underdeveloped and developed regions. Ocular diseases, previously associated with a higher depression risk, also impose a substantial economic burden on affected families, thus early detection and/or accurate treatment in order to avoid and prevent blindness should be emphasized. Ocular neovascularization (NV), the leading cause of blindness in a variety of eye diseases, is a pathologic process characterized by the formation, proliferation and infiltration of anomalous, tiny and leaky fragile blood vessels within the eye. Genetics have been suspected to play an important role in the occurrence of eye diseases, with the detection of a numbers of specific gene mutations. Long non-coding RNA (lncRNAs) are novel class of regulatory molecules previously associated with various biological processes and diseases, however the nature of the relation and pathways by which they might contribute to the development of corneal, choroidal and retinal NV have not yet been completely elucidated. In this review, we focus on the regulation and characteristics of lncRNAs, summarize results from ocular NV-related studies and discuss the implication of lncRNAs in ocular NV development.
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Affiliation(s)
- Yacouba Cissé
- Department of Ophthalmology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Lang Bai
- Department of Ophthalmology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Min-Ting Chen
- Department of Ophthalmology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
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307
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LncRNA MALAT1 Suppression Protects Endothelium against oxLDL-Induced Inflammation via Inhibiting Expression of MiR-181b Target Gene TOX. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:8245810. [PMID: 31949884 PMCID: PMC6942911 DOI: 10.1155/2019/8245810] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 10/31/2019] [Indexed: 12/11/2022]
Abstract
Rare studies have been conducted to investigate the exact interactions between lung adenocarcinoma transcript 1 (MALAT1), thymocyte selection-associated high mobility group box (TOX), and miRNAs in the pathogenesis of atherosclerosis (AS). We aim to investigate the crosstalk between MALAT1 and TOX and evaluate whether the regulatory mechanism was associated with the miRNA network. AS tissues were collected to determine the level of MALAT1 expression in AS patients, together with determination of miR-181b expression. Cultured endothelial cells were utilized to analyze the expressions of MALAT1, miR-181b, and TOX in the presence of oxLDL. Luciferase activity assay was conducted to evaluate the potential target sites of miR-181b on MALAT1 and TOX. In this study, we demonstrated that MALAT1 was upregulated in patients with AS. MALAT1 silencing significantly downregulated the expression of the miR-181b target gene TOX via reversing the effect of miR181b. Importantly, positive modulation of miR181b and inhibition of MALAT1 and TOX significantly attenuated oxLDL-induced endothelial inflammation and oxidative stress. Moreover, the MAPK signal pathways in endothelial cells were also inhibited through regulation of above endogenous RNAs. In summary, MALAT1 suppression protects the endothelium from oxLDL-induced inflammation and oxidative stress in endothelial cells by upregulation of miR-181b and downregulation of TOX.
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308
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Gong L, Chang H, Xu H. RETRACTED: LncRNA MALAT1 knockdown alleviates oxygen-glucose deprivation and reperfusion induced cardiomyocyte apoptotic death by regulating miR-122. Exp Mol Pathol 2019; 111:104325. [PMID: 31669130 DOI: 10.1016/j.yexmp.2019.104325] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 09/05/2019] [Accepted: 10/22/2019] [Indexed: 01/01/2023]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of the Editor-in-Chief. The journal was initially contacted by the corresponding author to request the retraction of the article. Given the comments of Dr Elisabeth Bik regarding this article “… the Western blot bands in all 400+ papers are all very regularly spaced and have a smooth appearance in the shape of a dumbbell or tadpole, without any of the usual smudges or stains. All bands are placed on similar looking backgrounds, suggesting they were copy/pasted from other sources, or computer generated”, the journal requested the authors to provide the raw data. However, the authors were not able to fulfil this request and therefore the Editor-in-Chief decided to retract the article.
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Affiliation(s)
- Licheng Gong
- Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Hong Chang
- Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - Haiming Xu
- Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun 130033, China.
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309
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Overexpression of MALAT1 Relates to Lung Injury through Sponging miR-425 and Promoting Cell Apoptosis during ARDS. Can Respir J 2019; 2019:1871394. [PMID: 31871512 PMCID: PMC6913333 DOI: 10.1155/2019/1871394] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 08/21/2019] [Accepted: 09/19/2019] [Indexed: 12/14/2022] Open
Abstract
Background Acute respiratory distress syndrome (ARDS) is a severe form of acute lung injury during which severe inflammatory responses induce cell apoptosis, necrosis, and fibrosis. Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is a multiple function long noncoding RNA that was found overexpressed during acute lung injury. However, the roles of MALAT1 in ARDS patients are still unknown. Methods Total RNA was extracted from the plasma, plasma exosome, and peripheral blood mononuclear cells (PBMCs) from 65 ARDS patients and 36 healthy controls. The MALAT1 and six candidate miRNAs levels were detected by qRT-PCR. The interaction between MALAT1 and miR-425 was predicted using a bioinformatics tool and verified by dual luciferase assay. Exosomes from ARDS patients were cultured with A549 and HFL-1 cells to confirm the delivery of miR-425 by exosomes. Cell apoptosis and viability were determined by flow cytometry and MTT assay. Results We found MALAT1 was significantly increased in the ARDS patients' plasma and PBMCs. The MALAT1 level in PBMCs was negatively correlated with exosomal miR-425 level. MALAT1 interacted with miR-425 and protected phosphatase and tensin homolog (PTEN) expression in A549 and HFL-1 cells. Exosomes from ARDS patients delivered less miR-425 into A549 and HFL-1 cells and induced cell apoptosis via upregulating PTEN. Conclusion This study identified increased MALAT1 and decreased miR-425 in ARDS patients and unveiled their roles during the pathogenesis of ARDS.
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310
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Wu HY, Wang XH, Liu K, Zhang JL. LncRNA MALAT1 regulates trophoblast cells migration and invasion via miR-206/IGF-1 axis. Cell Cycle 2019; 19:39-52. [PMID: 31774373 DOI: 10.1080/15384101.2019.1691787] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Preeclampsia (PE) is a pregnancy-specific syndrome that substantially leads to maternal and fetal mortality. Multiple factors contribute to the disease, but the exact pathogenesis still remains elusive. Here we explored the roles of lncRNA MALAT1 and miR-206 in PE. qRT-PCR was applied to measure mRNA levels of MALAT1 and miR-206 in the placenta of PE patients. Scratch wound healing assay and transwell invasion assay were conducted to test the effects of MALAT1 and miR-206 on migration and invasion of trophoblast cells. In addition, we validated MALAT1/miR-206 and miR-206/IGF-1 interactions with dual luciferase reporter assay. Western bot was used to detect protein expressions of IGF-1, p-PI3K, PI3K, p-Akt and Akt. We found that MALAT1 was decreased but miR-206 was increased in the placenta of patients with PE. Inhibition of MALAT1, knockdown IGF-1, or miR-206 mimics suppressed the trophoblast cells migration and invasion, while overexpression of MALAT1, IGF-1 or miR-206 inhibitors exhibited opposite effects. Further, miR-206 was confirmed as a direct target of MALAT1. Besides, miR-206 inhibited IGF-1 expression by directly binding to the 3'UTR. Mechanistically, our study demonstrated that MALAT1 regulates IGF-1/PI3K/Akt signaling via miR-206. Together, these results suggest that MALAT1 and miR-206 play important roles in PE. MALAT1 regulates miR-206/IGF-1 axis, thereby modulating trophoblast cells migration and invasion through PI3K/Akt signal pathway. These results show light on the underlying mechanisms of PE and provide potential targets for PE therapy.Abbreviations: PE: Preeclampsia; lncRNA: Long-non-coding RNA; MALAT1: Metastasis-associated lung adenocarcinoma transcript 1; IGF-1: Insulin-like growth factor 1; PI3k: Phosphatidylinositol-4, 5-bisphosphate 3-kinase; Akt: Protein kinase B; GAPDH: Glyceraldehyde 3-phosphate dehydrogenase; qRT-PCR: Quantitative Reverse Transcription polymerase chain reaction; shRNA: Short hairpin RNA; siRNA: Small interfering RNA; EMT: Epithelial-mesenchymal transition.
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Affiliation(s)
- Hai-Ying Wu
- Department of Obstetrics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, P.R. China
| | - Xiao-Hui Wang
- Department of Pediatric Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, P.R. China
| | - Kan Liu
- Department of Obstetrics, Henan Provincial People's Hospital, Clinical Medical College of Henan University, People's Hospital of Zhengzhou University, Zhengzhou, P.R. China
| | - Jing-Li Zhang
- Department of Obstetrics, Henan Provincial People's Hospital, Zhengzhou, P.R. China
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311
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Liu P, Li X, Cui Y, Chen J, Li C, Li Q, Li H, Zhang X, Zu X. LncRNA-MALAT1 mediates cisplatin resistance via miR-101-3p/VEGF-C pathway in bladder cancer. Acta Biochim Biophys Sin (Shanghai) 2019; 51:1148-1157. [PMID: 31650173 DOI: 10.1093/abbs/gmz112] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Indexed: 12/31/2022] Open
Abstract
Cisplatin (CDDP)-based chemotherapy is a standard strategy for the clinical treatment of patients with bladder cancer (BC). However, the anti-tumor efficacy of cisplatin is affected by multiple chemoresistance with complex molecular mechanisms. Recent evidence highlights the crucial regulatory roles of metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) in the progression of cancers and development of drug resistance. However, the roles and underlying molecular mechanisms of MALAT1 in cisplatin resistance of the BC cells remain largely unclear. In this study, we firstly demonstrated that MALAT1 expression was up-regulated in the BC tissues compared to the normal adjacent tissues and elevated in the cancer cells compared to the epithelial immortalized cells. Secondly, we found that suppression of MALAT1 enhanced the chemotherapeutic drug sensitivity and inhibited the cisplatin resistance of the BC cells. Thirdly, we showed that MALAT1 affected the cisplatin resistance of the BC cells via regulating the miR-101-3p/VEGF-C pathway. In summary, this study demonstrates that MALAT1, miR-101-3p and VEGF-C form a regulatory axis to affect the chemo-resistance of BC cells to CDDP, and provides novel potential targets for treatment of BC.
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Affiliation(s)
- Peihua Liu
- Department of Urology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Xiaozhou Li
- Department of Urology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Yu Cui
- Department of Urology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Jinbo Chen
- Department of Urology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Chao Li
- Department of Urology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Qiaqia Li
- Department of Urology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Huihuang Li
- Department of Urology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Xiangyang Zhang
- Department of Urology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Xiongbing Zu
- Department of Urology, Xiangya Hospital, Central South University, Changsha 410008, China
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312
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miR-124 and Parkinson's disease: A biomarker with therapeutic potential. Pharmacol Res 2019; 150:104515. [PMID: 31707035 DOI: 10.1016/j.phrs.2019.104515] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/20/2019] [Accepted: 10/28/2019] [Indexed: 02/07/2023]
Abstract
Parkinson's disease (PD) is a multifactorial disorder, attributed to a complex interplay between genetic and epigenetic factors. Although the exact etiology of the disease remains elusive, dysregulation of signaling pathways implicated in cell survival, apoptosis, protein aggregation, mitochondrial dysfunction, autophagy, oxidative damage and neuroinflammation, contributes to its pathogenesis. MicroRNAs (miRs) are endogenous short non-coding RNA molecules that negatively regulate gene expression at a post-transcriptional level. MiR-124 is one of the most abundantly expressed miRs in the brain that participates in neurogenesis, synapse morphology, neurotransmission, inflammation, autophagy and mitochondrial function. Accumulating pre-clinical evidence shows that miR-124 may act through calpain 1/p25/cyclin-dependent kinases 5 (CDK5), nuclear factor-kappa B (NF-κB), signal transducer and activator of transcription 3 (STAT3), Bcl-2-interacting mediator of cell death (Bim), 5' adenosine monophosphate-activated protein kinase (AMPK) and extracellular signal-regulated kinase (ERK)-mediated pathways to regulate cell survival, apoptosis, autophagy, mitochondrial dysfunction, oxidative damage and neuroinflammation in PD. Moreover, clinical evidence indicates that reduced plasma miR-124 levels may serve as a potential diagnostic biomarker in PD. This review provides an update of the pathogenic implication of miR-124 activity in PD and discusses its targeting potential for the development of future therapeutic strategies.
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313
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Qu D, Sun WW, Li L, Ma L, Sun L, Jin X, Li T, Hou W, Wang JH. Long noncoding RNA MALAT1 releases epigenetic silencing of HIV-1 replication by displacing the polycomb repressive complex 2 from binding to the LTR promoter. Nucleic Acids Res 2019; 47:3013-3027. [PMID: 30788509 PMCID: PMC6451131 DOI: 10.1093/nar/gkz117] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/10/2019] [Accepted: 02/14/2019] [Indexed: 12/23/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) may either repress or activate HIV-1 replication and latency; however, specific mechanisms for their action are not always clear. In HIV-1 infected CD4+ T cells, we performed RNA-Sequencing (RNA-Seq) analysis and discovered an up-regulation of MALAT1 (metastasis-associated lung adenocarcinoma transcript 1), an lncRNA previously described in cancer cells that associate with cancer pathogenesis. Moreover, we found that MALAT1 promoted HIV-1 transcription and infection, as its knockdown by CRISPR/Cas9 markedly reduced the HIV-1 long terminal repeat (LTR)-driven gene transcription and viral replication. Mechanistically, through an association with chromatin modulator polycomb repressive complex 2 (PRC2), MALAT1 detached the core component enhancer of zeste homolog 2 (EZH2) from binding with HIV-1 LTR promoter, and thus removed PRC2 complex-mediated methylation of histone H3 on lysine 27 (H3K27me3) and relieved epigenetic silencing of HIV-1 transcription. Moreover, the reactivation of HIV-1 stimulated with latency reversal agents (LRAs) induced MALAT1 expression in latently infected cells. Successful combination antiretroviral therapy (cART) was accompanied by significantly diminished MALAT1 expression in patients, suggesting a positive correlation of MALAT1 expression with HIV-1 replication. Our data have identified MALAT1 as a promoter of HIV-1 transcription, and suggested that MALAT1 may be targeted for the development of new therapeutics.
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Affiliation(s)
- Di Qu
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China.,University of Chinese Academy of Sciences, Beijing 100039, China
| | - Wei-Wei Sun
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China.,University of Chinese Academy of Sciences, Beijing 100039, China
| | - Li Li
- School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei 430070, China.,State Key Laboratory of Virology, Wuhan University, Wuhan, Hubei 430070, China
| | - Li Ma
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Li Sun
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Xia Jin
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Taisheng Li
- Department of Infectious Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Wei Hou
- School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei 430070, China.,State Key Laboratory of Virology, Wuhan University, Wuhan, Hubei 430070, China
| | - Jian-Hua Wang
- CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China.,University of Chinese Academy of Sciences, Beijing 100039, China
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314
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Long Non-Coding RNAs and Related Molecular Pathways in the Pathogenesis of Epilepsy. Int J Mol Sci 2019; 20:ijms20194898. [PMID: 31581735 PMCID: PMC6801574 DOI: 10.3390/ijms20194898] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 09/27/2019] [Accepted: 10/02/2019] [Indexed: 02/07/2023] Open
Abstract
Epilepsy represents one of the most common neurological disorders characterized by abnormal electrical activity in the central nervous system (CNS). Recurrent seizures are the cardinal clinical manifestation. Although it has been reported that the underlying pathological processes include inflammation, changes in synaptic strength, apoptosis, and ion channels dysfunction, currently the pathogenesis of epilepsy is not yet completely understood. Long non-coding RNAs (lncRNAs), a class of long transcripts without protein-coding capacity, have emerged as regulatory molecules that are involved in a wide variety of biological processes. A growing number of studies reported that lncRNAs participate in the regulation of pathological processes of epilepsy and they are dysregulated during epileptogenesis. Moreover, an aberrant expression of lncRNAs linked to epilepsy has been observed both in patients and in animal models. In this review, we summarize latest advances concerning the mechanisms of action and the involvement of the most dysregulated lncRNAs in epilepsy. However, the functional roles of lncRNAs in the disease pathogenesis are still to be explored and we are only at the beginning. Additional studies are needed for the complete understanding of the underlying mechanisms and they would result in the use of lncRNAs as diagnostic biomarkers and novel therapeutic targets.
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315
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Wang Y, Pan WY, Ge JS, Wang XD, Chen W, Luo X, Wang YL. A review of the relationship between long noncoding RNA and post-stroke injury repair. J Int Med Res 2019; 47:4619-4624. [PMID: 31526155 PMCID: PMC6833389 DOI: 10.1177/0300060519867493] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 07/12/2019] [Indexed: 11/15/2022] Open
Abstract
Stroke is a cerebrovascular circulation disorder with sudden onset, which causes disorder of ion balance, inflammation, and acidosis, and that in turn induces ischemia-reperfusion injury, influencing the prognosis of stroke patients. Long noncoding RNAs (lncRNAs) are regulatory sequences involved at the transcriptional, post-transcriptional, and epigenetic levels, have high specific expression in the central nervous system, and effectively regulate the development of the central nervous system and progression of diseases. Stroke induces changes in the expression of many lncRNAs. Therefore, lncRNAs play an important role in the complex pathological process of stroke. Exploring lncRNA could facilitate a comprehensive understanding of the pathological mechanism of stroke and the post-injury molecular regulatory network. However, there are few reports on the role of lncRNA in the pathological development of stroke. In the present review, we discuss the association of lncRNA with post-stroke injury repair.
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Affiliation(s)
- Yao Wang
- Department of Rehabilitation Medicine, Shenzhen Dapeng New District Nan’ao People’s Hospital, Shenzhen, China
| | - Wei-Yi Pan
- Department of Rehabilitation Medicine, Shenzhen Dapeng New District Nan’ao People’s Hospital, Shenzhen, China
| | - Jun-Sheng Ge
- Department of Rehabilitation Medicine, Shenzhen Dapeng New District Nan’ao People’s Hospital, Shenzhen, China
| | - Xiao-Dong Wang
- Department of Rehabilitation, Shenzhen Second People’s Hospital, The First Affiliated Hospital, Shenzhen University School of Medicine, Shenzhen, China
| | - Wei Chen
- Kerry Rehabilitation Medicine Research Institute, Shenzhen, Guangdong, China
| | - Xun Luo
- Kerry Rehabilitation Medicine Research Institute, Shenzhen, Guangdong, China
| | - Yu-Long Wang
- Department of Rehabilitation, Shenzhen Second People’s Hospital, The First Affiliated Hospital, Shenzhen University School of Medicine, Shenzhen, China
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316
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Zhang W, Eckwahl MJ, Zhou KI, Pan T. Sensitive and quantitative probing of pseudouridine modification in mRNA and long noncoding RNA. RNA (NEW YORK, N.Y.) 2019; 25:1218-1225. [PMID: 31227565 PMCID: PMC6800517 DOI: 10.1261/rna.072124.119] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 06/20/2019] [Indexed: 05/25/2023]
Abstract
Pseudouridine (Ψ) is the most abundant RNA modification in cellular RNA present in tRNA/rRNA/snRNA and also in mRNA and long noncoding RNA (lncRNA). Elucidation of Ψ function in mRNA/lncRNA requires mapping and quantitative assessment of its modification fraction at single-base resolution. The most widely used Ψ mapping method for mRNA/lncRNA relies on its reaction with N-Cyclohexyl-N'-(2-morpholinoethyl)carbodiimide (CMC), forming an adduct with the Ψ base in RNA that is detectable by reverse transcription (RT) stops. However, this method has not produced consistent Ψ maps in mRNAs; furthermore, available protocols do not lend confidence to the estimation of Ψ fraction at specific sites, which is a crucial parameter for investigating the biological relevance of mRNA modifications. Here we develop a quantitative RT-PCR based method that can detect and quantify the modification fraction of target Ψ sites in mRNA/lncRNA, termed CMC-RT and ligation assisted PCR analysis of Ψ modification (CLAP). The method still relies on RT stop at a CMC-Ψ site, but uses site-specific ligation and PCR to generate two distinct PCR products in the same sample, corresponding to the modified and unmodified site, that are visualized by gel electrophoresis. CLAP not only requires a small amount of cellular RNA to validate Ψ sites but also determines the Ψ fraction semiquantitatively at target sites in mRNA/lncRNA. We determined the Ψ status of four mRNA sites and one lncRNA site whose modification fractions range from 30% to 84% in three human cell lines. Our method enables precise mapping and assessment of Ψ modification levels in low abundance cellular RNAs.
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Affiliation(s)
- Wen Zhang
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, USA
| | - Matthew J Eckwahl
- Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, Illinois 60637, USA
| | - Katherine I Zhou
- Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, Illinois 60637, USA
| | - Tao Pan
- Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, Illinois 60637, USA
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317
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Zhao Y, Ai Y. Knockdown of lncRNA MALAT1 alleviates bupivacaine-induced neurotoxicity via the miR-101-3p/PDCD4 axis. Life Sci 2019; 232:116606. [DOI: 10.1016/j.lfs.2019.116606] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 06/10/2019] [Accepted: 06/25/2019] [Indexed: 11/25/2022]
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318
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Wei S, Liu Q. Long noncoding RNA MALAT1 modulates sepsis-induced cardiac inflammation through the miR-150-5p/NF-κB axis. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2019; 12:3311-3319. [PMID: 31934174 PMCID: PMC6949863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Accumulating evidence shows that long noncoding RNAs (lncRNAs) and microRNAs (miRNAs) are involved in the sepsis inflammatory response. However, the involvement of lncRNA metastasis-associated lung adenocarcinoma transcript 1 (MALAT1)/miR-150-5p axis in sepsis has not been reported. METHODS Lipopolysaccharide (LPS)-treated H9c2 cells were used to establish a sepsis cell model in vitro. The expressions of MALAT1 and miR-150-5p were monitored using a quantitative reverse transcription polymerase chain reaction (qRT-PCR). An ELISA assay was perfor med to detect the levels of interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α). The protein expression of NF-κB was determined by western blot. A luciferase reporter assay was introduced to verify the relationship between MALAT1/miR-150-5p. An RNA immunoprecipitation (RIP) assay and an RNA pull-down assay were carried out to detect the abundance of MALAT1. RESULTS MALAT1 was highly expressed, but miR-150-5p was downregulated in LPS-mediated H9c2 cells. Meanwhile, LPS significantly promoted the expressions of IL-6, TNF-α, and NF-κB. MALAT1 depletion attenuated the effect of LPS on the expressions of the inflammatory factors and the NF-κB signaling pathway, which was consistent with that of miR-150-5p overexpression. MALAT1 interacted with miR-150-5p. In addition, the rescue-of-function experiments also indicated that the loss of miR-150-5p undermined the effect of MALAT1 downregulation on H9c2 cells with LPS treatment. CONCLUSION We first demonstrated that MALAT1 depletion is responsible for the sepsis inflammatory response by inhibiting the expressions of IL-6 and TNF-α and the NF-κB signaling pathway by upregulating miR-150-5p.
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Affiliation(s)
- Shibo Wei
- Department of Intensive Care Unit, Hanyang Hospital Affiliated to Wuhan University of Science and Technology Wuhan, China
| | - Qingyun Liu
- Department of Intensive Care Unit, Hanyang Hospital Affiliated to Wuhan University of Science and Technology Wuhan, China
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319
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Dai X, Liang Z, Liu L, Guo K, Xu S, Wang H. Silencing of MALAT1 inhibits migration and invasion by sponging miR‑1‑3p in prostate cancer cells. Mol Med Rep 2019; 20:3499-3508. [PMID: 31485645 PMCID: PMC6755148 DOI: 10.3892/mmr.2019.10602] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 02/19/2019] [Indexed: 12/28/2022] Open
Abstract
Prostate cancer is a common malignancy with a high mortality rate. Long non-coding RNA metastasis associated with lung adenocarcinoma transcript 1 (MALAT1) has been reported to serve tumor-promoting roles. However, the underlying mechanism requires further examination. In the present study, it was demonstrated that MALAT1 was increased while microRNA (miR/miRNA)-1-3p was decreased in prostate cancer cell lines. The silencing of MALAT1 inhibited migration, invasion and epithelial-mesenchymal transition, when epithelial (E)-cadherin expression level was increased, and neural (N)-cadherin, vimentin, Slug and Snail expression levels were decreased. Dual-luciferase reporter assay results demonstrated that miR-1-3p bound to MALAT1 and coronin 1C (CORO1C) 3′ untranslated region, and MALAT1 competed with CORO1C for the binding sites of miR-1-3p. MALAT1 inhibited the expression of miR-1-3p and vice versa. MALAT1 knockdown induced the decline of CORO1C, which was subsequently recovered by the miR-1-3p inhibitor. In addition, by inhibiting miR-1-3p or overexpressing CORO1C, the silencing of MALAT1-induced phenotypic alterations were restored. In conclusion, MALAT1 serving as a degradable miRNA sponge, may sequester miR-1-3p from CORO1C and by silencing MALAT1, migration, invasion and epithelial-mesenchymal transition may be inhibited in prostate cancer cells. MALAT1 and CORO1C may serve as novel clinical therapeutic targets for prostate cancer.
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Affiliation(s)
- Xiaofan Dai
- Department of Andrology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Zuowen Liang
- Human Sperm Bank of Jilin Province, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Lingyun Liu
- Department of Andrology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Kaimin Guo
- Department of Andrology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Shengqi Xu
- Department of Andrology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Hongliang Wang
- Department of Andrology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
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320
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Wang Q, Liu X, Zhu R. Long Noncoding RNAs as Diagnostic and Therapeutic Targets for Ischemic Stroke. Curr Pharm Des 2019; 25:1115-1121. [PMID: 30919772 DOI: 10.2174/1381612825666190328112844] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 03/20/2019] [Indexed: 11/22/2022]
Abstract
LncRNAs (long non-coding RNAs) are endogenous molecules lacking protein-encoding capacity,
which have been identified as key regulators of ischemic stroke. Increasing evidence suggests that lncRNAs play
critical roles in several aspects of ischemic stroke, including atherosclerosis, dyslipidemia, hypertension, and
diabetes mellitus. Hence, lncRNAs may further broaden our understanding of stroke pathogenesis. Altered
lncRNA expression has been found in rodent focal cerebral ischemia models and oxygen–glucose deprived mouse
brain microvascular endothelial cells as well as stroke patients. LncRNAs are considered to be promising biomarkers
for the diagnosis and prognosis of cerebral ischemia. Here, we have reviewed the latest advances in
lncRNA-based therapeutic approaches for ischemic disease. Accordingly, we summarize the current understanding
of lncRNAs and ischemic stroke, focusing on the regulatory role of lncRNAs in ischemic stroke, as well as
their potential as biomarkers and therapeutic targets in cerebral ischemia.
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Affiliation(s)
- Qianwen Wang
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang 110001, China
| | - Xu Liu
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang 110001, China
| | - Ruixia Zhu
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang 110001, China
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321
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Niculite CM, Enciu AM, Hinescu ME. CD 36: Focus on Epigenetic and Post-Transcriptional Regulation. Front Genet 2019; 10:680. [PMID: 31379931 PMCID: PMC6659770 DOI: 10.3389/fgene.2019.00680] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 06/28/2019] [Indexed: 12/11/2022] Open
Abstract
CD36 is a transmembrane protein involved in fatty acid translocation, scavenging for oxidized fatty acids acting as a receptor for adhesion molecules. It is expressed on macrophages, as well as other types of cells, such as endothelial and adipose cells. CD36 participates in muscle lipid uptake, adipose energy storage, and gut fat absorption. Recently, several preclinical and clinical studies demonstrated that upregulation of CD36 is a prerequisite for tumor metastasis. Cancer metastasis-related research emerged much later and has been less investigated, though it is equally or even more important. CD36 protein expression can be modified by epigenetic changes and post-transcriptional interference from non-coding RNAs. Some data indicate modulation of CD36 expression in specific cell types by epigenetic changes via DNA methylation patterns or histone tails, or through miRNA interference, but this is largely unexplored. The few papers addressing this topic refer mostly to lipid metabolism-related pathologies, whereas in cancer research, data are even more scarce. The aim of this review was to summarize major epigenetic and post-transcriptional mechanisms that impact CD36 expression in relation to various pathologies while highlighting the areas in need of further exploration.
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Affiliation(s)
- Cristina-Mariana Niculite
- Cell Biology Department, "Victor Babes" National Institute of Pathology, Bucharest, Romania.,Department of Cellular and Molecular Biology and Histology, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
| | - Ana-Maria Enciu
- Cell Biology Department, "Victor Babes" National Institute of Pathology, Bucharest, Romania.,Department of Cellular and Molecular Biology and Histology, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
| | - Mihail Eugen Hinescu
- Cell Biology Department, "Victor Babes" National Institute of Pathology, Bucharest, Romania.,Department of Cellular and Molecular Biology and Histology, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania
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322
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West KA, Lagos D. Long Non-Coding RNA Function in CD4 + T Cells: What We Know and What Next? Noncoding RNA 2019; 5:ncrna5030043. [PMID: 31336952 PMCID: PMC6789709 DOI: 10.3390/ncrna5030043] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/03/2019] [Accepted: 07/12/2019] [Indexed: 02/06/2023] Open
Abstract
The non-coding genome has previously been regarded as "junk" DNA; however, emerging evidence suggests that the non-coding genome accounts for some of the greater biological complexity observed in mammals. Research into long non-coding RNAs (lncRNAs) has gathered speed in recent years, and a growing body of evidence has implicated lncRNAs in a vast range of cellular functions including gene regulation, chromosome organisation and splicing. T helper cells offer an ideal platform for the study of lncRNAs given they function as part of a complex cellular network and undergo remarkable and finely regulated gene expression changes upon antigenic stimulation. Using various knock down and RNA interaction studies several lncRNAs have been shown to be crucial for T helper cell differentiation, activation and function. Given that RNA targeting therapeutics are rapidly gaining attention, further understanding the mechanistic role of lncRNAs in a T helper context is an exciting area of research, as it may unearth a wide range of new candidate targets for treatment of CD4+ mediated pathologies.
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Affiliation(s)
- Katie A West
- York Biomedical Research Institute, University of York, Wentworth Way, York YO10 5DD, UK
- Department of Biology, University of York, Wentworth Way, York YO10 5DD, UK
- Hull York Medical School, University of York, Wentworth Way, York YO10 5DD, UK
| | - Dimitris Lagos
- York Biomedical Research Institute, University of York, Wentworth Way, York YO10 5DD, UK.
- Hull York Medical School, University of York, Wentworth Way, York YO10 5DD, UK.
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323
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Lin N, Yao Z, Xu M, Chen J, Lu Y, Yuan L, Zhou S, Zou X, Xu R. Long noncoding RNA MALAT1 potentiates growth and inhibits senescence by antagonizing ABI3BP in gallbladder cancer cells. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:244. [PMID: 31174563 PMCID: PMC6555920 DOI: 10.1186/s13046-019-1237-5] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 05/20/2019] [Indexed: 02/08/2023]
Abstract
Background Gallbladder cancer (GBC) is the most malignant cancer occurring in the biliary tract cancer featured with undesirable prognosis, in which most patients die within a year of cholecystectomy. Long noncoding RNAs (lncRNAs) function as critical regulators of multiple stages of cancers. Herein, the mechanism of lncRNA metastasis associated lung adenocarcinoma transcript 1 (MALAT1) in GBC is investigated. Methods Microarray-based analysis initially provided data suggesting that the expression of MALAT1 was up-regulated while that of the ABI family member 3 binding protein (ABI3BP) was down-regulated in GBC tissues and cell lines. Kaplan-Meier method was then adopted to analyze the relationship between the MALAT1 expression and overall survival and disease-free survival of patients with GBC. A set of in vitro and in vivo experiments were conducted by transducing ABI3BP-vector or sh-MALAT1 into GBC cells. Results The results confirmed that the cancer prevention effects triggered by restored ABI3BP and depleted MALAT1 as evidenced by suppressed cell growth and enhanced cell senescence. MALAT1 was observed to down-regulate ABI3BP expression through recruitment of the enhancer of zeste homolog 2 (EZH2) to the ABI3BP promoter region while the silencing of MALAT1 or suppression of H3K27 methylation was observed to promote the expression of ABI3BP. Furthermore, GBC patients with high expression of MALAT1 indicated poor prognosis. Conclusion The current study clarifies that MALAT1 silencing and ABI3BP elevation impede the GBC development through the H3K27 methylation suppression induced by EZH2, highlighting a promising competitive paradigm for therapeutic approaches of GBC.
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Affiliation(s)
- Nan Lin
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, 510630, Guangdong Province, People's Republic of China.
| | - Zhicheng Yao
- Department of General Surgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510630, People's Republic of China
| | - Mingxing Xu
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, 510630, Guangdong Province, People's Republic of China
| | - Jingyao Chen
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, 510630, Guangdong Province, People's Republic of China
| | - Yi Lu
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, 510630, Guangdong Province, People's Republic of China
| | - Lin Yuan
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, 510630, Guangdong Province, People's Republic of China
| | - Shuqin Zhou
- Department of Anesthesiology, Zhujiang Hospital of Southern Medical University, Guangzhou, 510280, People's Republic of China
| | - Xiaoguang Zou
- Department of Cardiology, Kashi Hospital Affiliated to Sun Yat-sen University, Kashi, 844000, People's Republic of China
| | - Ruiyun Xu
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, Sun Yat-sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, 510630, Guangdong Province, People's Republic of China.
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324
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Wu Y, Shao A, Wang L, Hu K, Yu C, Pan C, Zhang S. The Role of lncRNAs in the Distant Metastasis of Breast Cancer. Front Oncol 2019; 9:407. [PMID: 31214490 PMCID: PMC6555305 DOI: 10.3389/fonc.2019.00407] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 04/30/2019] [Indexed: 12/29/2022] Open
Abstract
Breast cancer (BC) remains the most frequently diagnosed cancer worldwide. Among breast cancer patients, distant metastasis and invasion is the leading cause of BC related death. Recently, long non-coding RNAs (lncRNAs), which used to be considered a genetic byproduct (owing to their unknown biological function), have been reported to be highly implicated in the development and progression of BC. In this review, we produce a summary of the functions and mechanisms of lncRNAs implicated in the different distant metastases of BC. The functions of lncRNAs have been divided into two types: oncogenic type and tumor suppressor. Furthermore, the majority of them exert their roles through the regulation of invasion, migration, epithelial-mesenchymal transition (EMT), and the metastasis process. In the final part, we briefly addressed future research prospects of lncRNAs, especially the testing methods through which to detect lncRNAs in the clinical work, and introduced several different tools with which to detect lncRNAs more conveniently. Although lncRNA research is still in the initial stages, it is a promising prognosticator and a novel therapeutic target for BC metastasis, which requires more research in the future.
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Affiliation(s)
- Yinan Wu
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), School of Medicine, The Second Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Anwen Shao
- Department of Neurosurgery, School of Medicine, Second Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Liangliang Wang
- Interdisciplinary Institute of Neuroscience and Technology, Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou, China
| | - Kaimin Hu
- Department of Surgical Oncology, School of Medicine, The Second Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Chengcheng Yu
- Department of Orthopedics, School of Medicine, The Second Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Chi Pan
- Department of Surgical Oncology, School of Medicine, The Second Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Suzhan Zhang
- Department of Surgical Oncology, School of Medicine, The Second Affiliated Hospital, Zhejiang University, Hangzhou, China
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325
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Zhang L, Meng X, Zhu XW, Yang DC, Chen R, Jiang Y, Xu T. Long non-coding RNAs in Oral squamous cell carcinoma: biologic function, mechanisms and clinical implications. Mol Cancer 2019; 18:102. [PMID: 31133028 PMCID: PMC6535863 DOI: 10.1186/s12943-019-1021-3] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Accepted: 04/22/2019] [Indexed: 01/17/2023] Open
Abstract
There is growing evidence that regions of the genome that cannot encode proteins play an important role in diseases. These regions are usually transcribed into long non-coding RNAs (lncRNAs). LncRNAs, little or no coding potential, are defined as capped transcripts longer than 200 nucleotides. New sequencing technologies have shown that a large number of aberrantly expressed lncRNAs are associated with multiple cancer types and indicated they have emerged as an important class of pervasive genes during the development and progression of cancer. However, the underlying mechanism in cancer is still unknown. Therefore, it is necessary to elucidate the lncRNA function. Notably, many lncRNAs dysregulation are associated with Oral squamous cell carcinoma (OSCC) and affect various aspects of cellular homeostasis, including proliferation, survival, migration or genomic stability. This review expounds the up- or down-regulation of lncRNAs in OSCC and the molecular mechanisms by which lncRNAs perform their function in the malignant cell. Finally, the potential of lncRNAs as non-invasive biomarkers for OSCC diagnosis are also described. LncRNAs hold promise as prospective novel therapeutic targets, but more research is needed to gain a better understanding of their biologic function.
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Affiliation(s)
- Lei Zhang
- College & Hospital of Stomatology, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China.,Department of Periodontology, College and Hospital of Stomatology, Anhui Medical University, Hefei, 230032, Anhui Province, China
| | - Xiang Meng
- School of Stomatology, Anhui Medical University, Hefei, 230032, Anhui Province, China
| | - Xin-Wei Zhu
- College & Hospital of Stomatology, Anhui Medical University, Key Lab. of Oral Diseases Research of Anhui Province, Hefei, 230032, China.,Outpatient Department of Binhu District, College and Hospital of Stomatology, Anhui Medical University, Hefei, 230601, Anhui Province, China
| | - Deng-Cheng Yang
- School of Stomatology, Anhui Medical University, Hefei, 230032, Anhui Province, China
| | - Ran Chen
- School of Stomatology, Anhui Medical University, Hefei, 230032, Anhui Province, China
| | - Yong Jiang
- Department of Stomatology, The Fourth Affiliated Hospital of Anhui Medical University, 372 Tunxi Road, Hefei, 230000, Anhui Province, China.
| | - Tao Xu
- School of Pharmacy, Anhui Key Laboratory of Bioactivity of Natural Products, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui Province, China. .,Institute for Liver Diseases of Anhui Medical University, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui Province, China.
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326
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Huang X, Zhao M. High expression of long non-coding RNA MALAT1 correlates with raised acute respiratory distress syndrome risk, disease severity, and increased mortality in sepstic patients. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2019; 12:1877-1887. [PMID: 31934011 PMCID: PMC6947113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/25/2019] [Indexed: 06/10/2023]
Abstract
This study aimed to explore the correlation of long non-coding RNA metastasis-associated lung adenocarcinoma transcript 1 (lnc-MALAT1) expression with acute respiratory distress syndrome (ARDS) risk, disease severity, inflammation level, and mortality in septic patients. 152 septic patients were consecutively included and surveillance was conducted daily to identify ARDS occurrence. Severity and organ failure of sepsis were assessed by APACHE II score and SOFA score respectively, and the in-hospital mortality was calculated. Patients' blood samples were extracted. Lnc-MALAT1 expression and inflammatory cytokines levels were detected using real-time qPCR and ELISA assay respectively. The incidence of ARDS was 27.0%. Lnc-MALAT1 expression was increased in ARDS patients compared to non-ARDS patients, and it could distinguish ARDS from non-ARDS by ROC with AUC of 0.674 (95% CI: 0.581-0.766). Multivariate logistic regression analysis displayed that lnc-MALAT1 high expression, increased age, higher proportion of smoking and COPD were independent factors for predicting elevated ARDS risk. Lnc-MALAT1 expression was positively correlated with APACHE II score, SOFA score, and inflammatory factors levels including C-reactive protein, procalcitonin, TNF-α, IL-1β, IL-6 and IL-17. Furthermore, the mortality was 30.9%, and lnc-MALAT1 expression was elevated in non-survivors compared to survivors, presenting a good predictive value for high mortality by ROC with AUC of 0.651 (95% CI: 0.555-0.747). Lnc-MALAT1 high expression predicts increased ARDS risk, and correlates with severe disease condition and raised mortality in sepsis patients.
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Affiliation(s)
- Xing Huang
- Department of Emergency Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430014, China
| | - Min Zhao
- Department of Emergency Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430014, China
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Gao Z, Chen M, Tian X, Chen L, Chen L, Zheng X, Wang H, Chen J, Zhao A, Yao Q, Zhu Q, Jin S, Hu H, Zeng S, Yu L. A novel human lncRNA SANT1 cis-regulates the expression of SLC47A2 by altering SFPQ/E2F1/HDAC1 binding to the promoter region in renal cell carcinoma. RNA Biol 2019; 16:940-949. [PMID: 30951404 DOI: 10.1080/15476286.2019.1602436] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
SLC47A2 encodes MATE 2-K in the kidney, which mediates the secretion of certain endogenous and exogenous compounds. SLC47A2 was dramatically repressed in patients with renal cell carcinoma (RCC), and a lower level of SLC47A2 might act as a negative prognostic marker, although the mechanism is not well understood. In this study, we aimed to investigate the mechanism via which SLC47A2 is downregulated in RCC. Based on the annotation information of the SLC47A2 locus available in the UCSC genome browser database, we identified a novel lncRNA, which is transcribed from the SLC47A2 locus and named it SANT1. Overexpression and knock-down assays were performed to investigate the effects of SANT1 on cis-regulation of SLC47A2. We verified the direct binding between SANT1 and SFPQ/E2F1/HDAC1 using the cross-linking and immunoprecipitation (CLIP) assay. Chromatin immunoprecipitation was performed to confirm the molecular mechanism via which SANT1 activates the transcription of the SLC47A2 coding region. We observed that SANT1 can cis-regulate its own genetic locus. In tumour-adjacent tissues, the SLC47A2 locus highly expresses SANT1, which can remove the regulatory SFPQ/E2F1/HDAC1 suppressor complex from the promoter region, thereby significantly increasing the levels of the H3K27ac modification and RNAPII binding. Owing to a low SANT1 level, the binding of this inhibitory complex in the promoter region is upregulated in RCC, which results in silencing of the SLC47A2 coding region. In conclusion, we identified a novel lncRNA and elucidated the mechanism via which it regulates SLC47A2 expression in RCC.
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Affiliation(s)
- Zhangzhao Gao
- a Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , China
| | - Mengjiao Chen
- a Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , China
| | - Xueke Tian
- a Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , China
| | - Lu Chen
- a Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , China
| | - Le Chen
- a Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , China
| | - Xiaoli Zheng
- a Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , China
| | - Hua Wang
- b Zhejiang Cancer Hospital , Hangzhou , China
| | | | - An Zhao
- b Zhejiang Cancer Hospital , Hangzhou , China
| | - Qingqing Yao
- a Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , China
| | - Qianying Zhu
- a Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , China
| | - Shengnan Jin
- a Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , China
| | - Haihong Hu
- a Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , China
| | - Su Zeng
- a Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , China
| | - Lushan Yu
- a Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , China
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328
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Che D, Yang Y, Xu Y, Fang Z, Pi L, Fu L, Zhou H, Tan Y, Lu Z, Li L, Liang Q, Xuan Q, Gu X. The lncRNA MALAT1 rs619586 G Variant Confers Decreased Susceptibility to Recurrent Miscarriage. Front Physiol 2019; 10:385. [PMID: 31024342 PMCID: PMC6465954 DOI: 10.3389/fphys.2019.00385] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 03/21/2019] [Indexed: 12/20/2022] Open
Abstract
Cardiovascula disease and recurrent miscarriage have shared risk factors, and some cardiovascular disease-related candidate genes have been confirmed to be associated with recurrent miscarriage. Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is a long non-coding RNA (lncRNA) that is considered to be associated with susceptibility to cardiovascular disease. However, whether lncRNA MALAT1 polymorphisms are related to recurrent miscarriage susceptibility is unclear. We genotyped three lncRNA MALAT1 polymorphisms (rs591291, rs619586, and rs3200401) in 284 patients and 392 controls using TaqMan methods. Logistic regression was used to evaluate the odds ratios (ORs) and 95% confidence intervals (CIs) adjusted for age. Our results showed that the rs619586 G variant had protective effects against recurrent miscarriage (AG vs. AA: adjusted OR = 0.670, 95% CI = 0.457–0.982, p = 0.040; GG vs. AA: adjusted OR = 0.278, 95% CI = 0.079–0.975, p = 0.046; GG/AG vs. AA adjusted OR = 0.621, 95% CI = 0.429–0.900, p = 0.012). In a combined analyses of protective genotypes, with regard to the three single nucleotide polymorphisms (SNPs), we found that individuals with two or three protective genotypes exhibited a significantly lower risk of recurrent miscarriage than those with no or only one protective genotype (adjusted OR = 0.369, 95% CI = 0.199–0.684, p = 0.002). Moreover, the decrease in recurrent miscarriage risk with two or three protective genotypes was most pronounced in women less than 35 years of age (OR = 0.290, 95% CI = 0.142–0.589, p < 0.001) and in women with 2–3 miscarriages (adjusted OR = 0.270, 95% CI = 0.126–0.580, p < 0.001). In conclusion, our study suggests that the rs619586 G variant may have potential protective effects conferring a decreased risk of recurrent miscarriage in the southern Chinese population.
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Affiliation(s)
- Di Che
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yanfang Yang
- Department of Prenatal Diagnosis, Maoming People's Hospital, Maoming, China
| | - Yufen Xu
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Zhenzhen Fang
- Program of Molecular Medicine, Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Lei Pi
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - LanYan Fu
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Huazhong Zhou
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yaqian Tan
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Zhaoliang Lu
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Li Li
- Department of Gynecology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Qihua Liang
- Department of Clinical Lab, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Qingshan Xuan
- Department of Gynecology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Xiaoqiong Gu
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Clinical Lab, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.,Department of Blood Transfusion, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
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329
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Zhang X, Zhu XL, Ji BY, Cao X, Yu LJ, Zhang Y, Bao XY, Xu Y, Jin JL. LncRNA-1810034E14Rik reduces microglia activation in experimental ischemic stroke. J Neuroinflammation 2019; 16:75. [PMID: 30961627 PMCID: PMC6452518 DOI: 10.1186/s12974-019-1464-x] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 03/26/2019] [Indexed: 12/30/2022] Open
Abstract
Background Activation of microglial cells plays an important role in neuroinflammation after ischemic stroke. Inhibiting the activation of microglial cells has been suggested as a potential therapeutic approach in the treatment of ischemic stroke. Methods Oxygen-glucose deprivation in primary microglial cells and transient middle cerebral artery occlusion (MCAO) in C57BL/6 mice were used as the in vitro and in vivo ischemic stroke models. Microarray analysis was performed to investigate the overall impact of long non-coding RNAs (lncRNAs) on the inflammation status of microglial cells. RT-qPCR was used to evaluate the lncRNA levels and mRNA levels of cytokines and microglial cell markers. ELISA was taken to measure the level of cytokines. Immunofluorescence was used to observe the activation of microglial cells. Western blotting was performed to test the p65 phosphorylation. Results In this study, we showed that LncRNA-1810034E14Rik was significantly decreased in LPS-treated or oxygen-glucose deprivation-induced microglial cells. Overexpression of 1810034E14Rik decreased the infarct volume and alleviated brain damage in MCAO mice. 1810034E14Rik overexpression reduced the expression of inflammatory cytokines not only in ischemic stroke mice but also in oxygen-glucose deprivation-induced microglial cells. Moreover, 1810034E14Rik overexpression could suppress the activation of microglial cells and inhibit the phosphorylation of p65. Conclusions LncRNA-1810034E14Rik plays an anti-inflammatory role in ischemic stroke and regulates p65 phosphorylation, making it a potential target for stroke treatment. Electronic supplementary material The online version of this article (10.1186/s12974-019-1464-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xi Zhang
- Department of Neurology, Drum Tower Hospital, Medical School and The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, 210008, China
| | - Xiao-Lei Zhu
- Department of Neurology, Drum Tower Hospital, Medical School and The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, 210008, China
| | - Bi-Ying Ji
- Department of Neurology, Drum Tower Hospital, Medical School and The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, 210008, China
| | - Xiang Cao
- Department of Neurology, Drum Tower Hospital, Medical School and The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, 210008, China
| | - Lin-Jie Yu
- Department of Neurology, Drum Tower Hospital, Medical School and The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, 210008, China
| | - Yan Zhang
- Department of Neurology, Drum Tower Hospital, Medical School and The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, 210008, China
| | - Xin-Yu Bao
- Department of Neurology, Drum Tower Hospital, Medical School and The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210008, China.,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, 210008, China
| | - Yun Xu
- Department of Neurology, Drum Tower Hospital, Medical School and The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210008, China. .,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, 210008, China. .,Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, 210008, China. .,Nanjing Neuropsychiatry Clinic Medical Center, Nanjing, 210008, China.
| | - Jia-Li Jin
- Department of Neurology, Drum Tower Hospital, Medical School and The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, 210008, China. .,Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, 210008, China.
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330
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Li H, Zhao Q, Chang L, Wei C, Bei H, Yin Y, Chen M, Wang H, Liang J, Wu Y. LncRNA MALAT1 modulates ox-LDL induced EndMT through the Wnt/β-catenin signaling pathway. Lipids Health Dis 2019; 18:62. [PMID: 30871555 PMCID: PMC6417088 DOI: 10.1186/s12944-019-1006-7] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/06/2019] [Indexed: 02/05/2023] Open
Abstract
Background Endothelial-to-mesenchymal transition (EndMT) plays significant roles in atherosclerosis, but the regulatory mechanisms involving lncRNAs remain to be elucidated. Here we sort to identify the role of metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) in ox-LDL-induced EndMT. Methods The atherosclerosis model was established by feeding ApoE−/− mice with high-fat diet, and the levels of lncRNA MALAT1 in mouse arterial tissue were detected by RT-qPCR. Cell model was established by treating human umbilical vein endothelial cells (HUVECs) with ox-LDL, and the levels of EndMT markers, such as CD31, vWF, α-SMA and Vimentin and lncRNA MALAT1 levels were detected and their correlations were analyzed. The role of MALAT1 in EndMT and its dependence on Wnt/β-catenin signaling pathway was further detected by knocking down or overexpressing MALAT1. Results MALAT1 was upregulated in high-fat food fed ApoE−/− mice. HUVECs treated with ox-LDL showed a significant decrease in expression of CD31 and vWF, a significant increase in expression of α-SMA and vimentin, and upregulated MALAT1. An increased MALAT1 level facilitated the nuclear translocation of β-catenin induced by ox-LDL. Inhibition of MALAT1 expression reversed nuclear translocation of β-catenin and EndMT. Moreover, overexpression of MALAT1 enhanced the effects of ox-LDL on HUVEC EndMT and Wnt/β-catenin signaling activation. Conclusions Our study revealed that the pathological EndMT required the activation of the MALAT1-dependent Wnt/β-catenin signaling pathway, which may be important for the onset of atherosclerosis. Trial registration Not applicable.
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Affiliation(s)
- Hongrong Li
- Hebei Medical University, No. 361, Zhongshan East Road, Changan District, Shijiazhuang, 050017, China
| | - Qifei Zhao
- Hebei Medical University, No. 361, Zhongshan East Road, Changan District, Shijiazhuang, 050017, China
| | - Liping Chang
- National Key Laboratory of Luobing Research and Innovative Chinese Medicine, Shijiazhuang, 050035, China
| | - Cong Wei
- Hebei Medical University, No. 361, Zhongshan East Road, Changan District, Shijiazhuang, 050017, China.,Hebei Key Laboratory of Luobing, Shijiazhuang, 050035, China
| | - Hongying Bei
- Yiling Hospital of Hebei Medical University, The Key Laboratory of State Administration of Traditional Chinese Medicine, Shijiazhuang, 050091, China
| | - Yujie Yin
- Yiling Hospital of Hebei Medical University, The Key Laboratory of State Administration of Traditional Chinese Medicine, Shijiazhuang, 050091, China.,Hebei University of Chinese Medicine, Shijiazhuang, 050090, China
| | - Meng Chen
- National Key Laboratory of Luobing Research and Innovative Chinese Medicine, Shijiazhuang, 050035, China
| | - Hongtao Wang
- National Key Laboratory of Luobing Research and Innovative Chinese Medicine, Shijiazhuang, 050035, China
| | - Junqing Liang
- National Key Laboratory of Luobing Research and Innovative Chinese Medicine, Shijiazhuang, 050035, China
| | - Yiling Wu
- Hebei Medical University, No. 361, Zhongshan East Road, Changan District, Shijiazhuang, 050017, China. .,Yiling Hospital of Hebei Medical University, The Key Laboratory of State Administration of Traditional Chinese Medicine, Shijiazhuang, 050091, China.
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331
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Wang Z, Katsaros D, Biglia N, Shen Y, Loo L, Yu X, Lin H, Fu Y, Chu WM, Fei P, Ni Y, Jia W, Deng X, Qian B, Yu H. ERα upregulates the expression of long non-coding RNA LINC00472 which suppresses the phosphorylation of NF-κB in breast cancer. Breast Cancer Res Treat 2019; 175:353-368. [PMID: 30830488 DOI: 10.1007/s10549-018-05108-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 12/16/2018] [Indexed: 12/17/2022]
Abstract
PURPOSE Low expression of long intergenic non-coding RNA LINC00472 in breast cancer is associated with aggressive tumors and unfavorable disease outcomes in multiple clinical datasets, but the reasons for these associations were unknown. METHODS To study the mechanisms underlying the lncRNA's connection to breast cancer, we investigated the molecular targets and regulation of LINC00472 in breast cancer cells, and analyzed relevant molecular features in relation to patient survival. Gene expression profiles of breast cancer cells overexpressing LINC00472 were analyzed for its regulatory pathways and downstream targets. Effects of LINC00472 overexpression on cell behaviors were evaluated in vitro and in vivo. Meta-analysis was performed using online datasets and our own study. RESULTS Analysis of LINC00472 transcriptome revealed ERα upregulation of LINC00472 expression, and an ERα-binding site in the LINC00472 promoter was identified. Evaluation of LINC00472 overexpression also indicated a possible link between LINC00472 and NF-κB. Cell experiments confirmed that LINC00472 suppressed the phosphorylation of p65 and IκBα through binding to IKKβ, inhibiting its phosphorylation. High LINC00472 expression inhibited tumor growth both in vitro and in vivo and suppressed aggressive tumor cell behaviors in vitro. Suppressing LINC00472 expression in ER-positive tumor cells increased cell aggressive behaviors. Tamoxifen treatment of ER-positive cells inhibited ERα and LINC00472 expression and increased p65 and IκBα phosphorylation. Meta-analysis showed that LINC00472 expression were higher in ER-positive than ER-negative tumors and that high expression was associated with better disease outcomes in ER-positive patients. CONCLUSIONS The study demonstrates that ERα upregulates LINC00472 which suppresses the phosphorylation of NF-κB, and suggests that endocrine treatment may lower LINC00472 and increase NF-κB activities, leading to tumor progression and disease recurrence.
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Affiliation(s)
- Zhanwei Wang
- University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI, 96813, USA
| | - Dionyssios Katsaros
- Department of Surgical Sciences, Gynecology, AOU Città della Salute, University of Torino, Turin, Italy
| | - Nicoletta Biglia
- Division of Obstetrics and Gynecology, Department of Surgical Sciences, University of Torino School of Medicine, Mauriziano Hospital, Turin, Italy
| | - Yi Shen
- University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI, 96813, USA
| | - Lenora Loo
- University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI, 96813, USA
| | - Xiao Yu
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital and Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, 227 South Chongqing Road, Shanghai, 200025, China
| | - Hongyan Lin
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital and Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, 227 South Chongqing Road, Shanghai, 200025, China
| | - Yuanyuan Fu
- University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI, 96813, USA.,Department of Molecular Biosciences & Bioengineering, University of Hawaii at Manoa, Honolulu, HI, USA
| | - Wen-Ming Chu
- University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI, 96813, USA
| | - Peiwen Fei
- University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI, 96813, USA
| | - Yan Ni
- University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI, 96813, USA
| | - Wei Jia
- University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI, 96813, USA
| | - Xiaobei Deng
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital and Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, 227 South Chongqing Road, Shanghai, 200025, China
| | - Biyun Qian
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital and Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, 227 South Chongqing Road, Shanghai, 200025, China.
| | - Herbert Yu
- University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI, 96813, USA.
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332
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Hu N, Chen L, Wang C, Zhao H. MALAT1 knockdown inhibits proliferation and enhances cytarabine chemosensitivity by upregulating miR-96 in acute myeloid leukemia cells. Biomed Pharmacother 2019; 112:108720. [PMID: 30970520 DOI: 10.1016/j.biopha.2019.108720] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 02/17/2019] [Accepted: 02/20/2019] [Indexed: 12/13/2022] Open
Abstract
Drug resistance remains a major cause of relapse and therapeutic failure in acute myeloid leukemia (AML). Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) has been documented to act as an oncogene and is frequently highly expressed in human cancers including AML. However, the function and molecular mechanism of MALAT1 in regulating cytarabine (Ara-C) resistance of AML are largely unknown. The expressions of MALAT1 and miR-96 in AML patients and healthy controls were examined by qRT-PCR. CCK-8 and flow cytometry assay were performed to assess the proliferation and apoptosis of AML cells. The interaction between MALAT1 and miR-96 was investigated by luciferase reporter assay. We found that MALAT1 was upregulated while miR-96 was downregulated in AML patients compared with healthy controls. A negative correlation between MALAT1 and miR-96 expressions was observed in AML patients. Knockdown of MALAT1 inhibited the proliferation, induced apoptosis, and enhanced Ara-C sensitivity of AML cells. Additionally, MALAT1 suppressed miR-96 expression by acting as a molecular sponge of miR-96 in AML cells. miR-96 downregulation abolished the effects of MALAT1 knockdown on the proliferation, apoptosis, Ara-C sensitivity in AML cells. In conclusion, MALAT1 knockdown inhibited proliferation, promoted apoptosis and enhanced Ara-C sensitivity in AML cells by upregulating miR-96, providing novel insights into the critical role of MALAT1 as a miRNA sponge in AML.
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Affiliation(s)
- Ning Hu
- Department of Hematology, Huaihe Hospital of Henan University, Kaifeng 475000, Henan, China
| | - Li Chen
- Department of Hematology, Huaihe Hospital of Henan University, Kaifeng 475000, Henan, China
| | - Chao Wang
- Department of Hematology, Huaihe Hospital of Henan University, Kaifeng 475000, Henan, China
| | - Hongmian Zhao
- Department of Hematology, Huaihe Hospital of Henan University, Kaifeng 475000, Henan, China.
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333
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Long Non-Coding RNA and Acute Leukemia. Int J Mol Sci 2019; 20:ijms20030735. [PMID: 30744139 PMCID: PMC6387068 DOI: 10.3390/ijms20030735] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 10/20/2018] [Accepted: 10/22/2018] [Indexed: 12/19/2022] Open
Abstract
Acute leukemia (AL) is the main type of cancer in children worldwide. Mortality by this disease is high in developing countries and its etiology remains unanswered. Evidences showing the role of the long non-coding RNAs (lncRNAs) in the pathophysiology of hematological malignancies have increased drastically in the last decade. In addition to the contribution of these lncRNAs in leukemogenesis, recent studies have suggested that lncRNAs could be used as biomarkers in the diagnosis, prognosis, and therapeutic response in leukemia patients. The focus of this review is to describe the functional classification, biogenesis, and the role of lncRNAs in leukemogenesis, to summarize the evidence about the lncRNAs which are playing a role in AL, and how these genes could be useful as potential therapeutic targets.
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334
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Abstract
Over many years, extensive efforts have focused on the development and improvement of diagnostic and therapeutic strategies to reduce stroke-associated neurovascular damage, such as blood-brain barrier dysfunction, brain edema, parenchymal inflammation, and neural cell death. However, the only clinically applied pharmacological therapy to date for the treatment of acute ischemic stroke is thrombolysis. Because of the short therapeutic window of current thrombolytic therapy and the activation of various pathophysiological signaling cascades triggered after ischemic stroke, the development of new therapies is urgently required. Noncoding RNAs (ncRNAs) are defined as untranslated regulatory RNA molecules. Although ncRNAs with biological roles have been known for almost 60 years, they have within the past decade emerged as key mediators of posttranscriptional gene expression/function in pathological aspects of ischemic stroke. With properties of relative stability, specificity, and reproducibility, ncRNAs are considered to be promising as biomarkers and better candidates than proteins and genes for early recognition of the onset of disease. In this update, we summarized the current knowledge for three groups of ncRNAs in stroke, focusing on the role of long noncoding RNAs and circular RNAs as biomarkers for stroke and as targets for regulating large sets of genes in related pathways after ischemic stroke.
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Affiliation(s)
- Xuejing Zhang
- Pittsburgh Institute of Brain Disorders & Recovery, Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Milton H. Hamblin
- Department of Pharmacology, Tulane University School of Medicine, 1430 Tulane Avenue SL83, New Orleans, LA 70112, USA
| | - Ke-Jie Yin
- Pittsburgh Institute of Brain Disorders & Recovery, Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
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335
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Ji E, Kim C, Kim W, Lee EK. Role of long non-coding RNAs in metabolic control. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2018; 1863:194348. [PMID: 30594638 DOI: 10.1016/j.bbagrm.2018.12.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 12/21/2018] [Indexed: 02/07/2023]
Abstract
Long non-coding RNAs (lncRNAs) have emerged as pivotal regulators of gene expression by influencing various biological processes including proliferation, apoptosis, differentiation, and senescence. Accumulating evidence implicates lncRNAs in the maintenance of metabolic homeostasis; dysregulation of certain lncRNAs promotes the progression of metabolic disorders such as diabetes, obesity, and cardiovascular diseases. In this review, we discuss our understanding of lncRNAs implicated in metabolic control, focusing on in particular diseases arising from chronic inflammation, insulin resistance, and lipid homeostasis. We have analyzed lncRNAs and their molecular targets involved in the pathogenesis of chronic liver disease, diabetes, and obesity, and have discussed the rising interest in lncRNAs as diagnostic and therapeutic targets improving metabolic homeostasis. This article is part of a Special Issue entitled: ncRNA in control of gene expression edited by Kotb Abdelmohsen.
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Affiliation(s)
- Eunbyul Ji
- Department of Biochemistry, The Catholic University of Korea College of Medicine, Seoul 06591, South Korea
| | - Chongtae Kim
- Department of Biochemistry, The Catholic University of Korea College of Medicine, Seoul 06591, South Korea
| | - Wook Kim
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, South Korea
| | - Eun Kyung Lee
- Department of Biochemistry, The Catholic University of Korea College of Medicine, Seoul 06591, South Korea.
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Song Y, Yang L, Guo R, Lu N, Shi Y, Wang X. Long noncoding RNA MALAT1 promotes high glucose-induced human endothelial cells pyroptosis by affecting NLRP3 expression through competitively binding miR-22. Biochem Biophys Res Commun 2018; 509:359-366. [PMID: 30591217 DOI: 10.1016/j.bbrc.2018.12.139] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 12/18/2018] [Indexed: 11/28/2022]
Abstract
Cell death and inflammation play critical roles in atherosclerosis. Pyroptosis, a novel proinflammatory programmed cell death process, participates in atherosclerosis pathogenesis. Recently, MALAT1 was identified as a pyroptosis-related long noncoding RNA (lncRNA). Here, we investigated the potential role and underlying mechanism of lncRNA MALAT1 in endothelial cells pyroptosis. We first established an endothelial cell pyroptosis model by stimulating EA.hy926 human endothelial cells (EA.hy926 cells) with high glucose. Then, we investigated lncRNA MALAT1 expression and found that it was upregulated in high glucose-treated EA.hy926 cells. Furthermore, lncRNA MALAT1 knockdown significantly inhibited high glucose-induced pyroptosis in EA.hy926 cells, which may critically influence atherosclerosis. Moreover, miR-22 was a target of lncRNA MALAT1 and was negatively correlated with lncRNA MALAT1. NLRP3 expression was significantly suppressed by transfection with a MALAT1-targeting antisense oligonucleotide (ASO). Ultimately, miR-22 overexpression abrogated the effect of MALAT1 on high glucose-induced EA.hy926 cells pyroptosis. Together, our results suggest that lncRNA MALAT1 promotes high glucose-induced pyroptosis of endothelial cells partly by affecting NLRP3 expression through competitively binding miR-22. Our findings indicate a new regulatory mechanism for endothelial cells pyroptosis under high-glucose stress, providing a novel therapeutic target for atherosclerosis.
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Affiliation(s)
- Yaxian Song
- Department of Postgraduate, Kunming Medical University, Yunnan, 650500, China
| | - Lixia Yang
- Department of Cardiology, The 920th Hospital of Joint Logistics Support Force of the Chinese People's Liberation Army, Yunnan, China.
| | - Ruiwei Guo
- Department of Cardiology, The 920th Hospital of Joint Logistics Support Force of the Chinese People's Liberation Army, Yunnan, China
| | - Nihong Lu
- Department of Postgraduate, Kunming Medical University, Yunnan, 650500, China
| | - Yankun Shi
- Department of Cardiology, The 920th Hospital of Joint Logistics Support Force of the Chinese People's Liberation Army, Yunnan, China
| | - Xianmei Wang
- Department of Cardiology, The 920th Hospital of Joint Logistics Support Force of the Chinese People's Liberation Army, Yunnan, China
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Gyvyte U, Kupcinskas J, Juzenas S, Inciuraite R, Poskiene L, Salteniene V, Link A, Fassan M, Franke A, Kupcinskas L, Skieceviciene J. Identification of long intergenic non-coding RNAs (lincRNAs) deregulated in gastrointestinal stromal tumors (GISTs). PLoS One 2018; 13:e0209342. [PMID: 30557328 PMCID: PMC6296525 DOI: 10.1371/journal.pone.0209342] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 12/04/2018] [Indexed: 12/12/2022] Open
Abstract
Long intergenic non-coding RNAs (lincRNAs) are >200 nucleotides long non-coding RNAs, which have been shown to be implicated in carcinogenic processes by interacting with cancer associated genes or other non-coding RNAs. However, their role in development of rare gastrointestinal stromal tumors (GISTs) is barely investigated. Therefore, the aim of this study was to define lincRNAs deregulated in GIST and find new GIST-lincRNA associations. Next-generation sequencing data of paired GIST and adjacent tissue samples from 15 patients were subjected to a web-based lincRNA analysis. Three deregulated lincRNAs (MALAT1, H19 and FENDRR; adjusted p-value < 0.05) were selected for expression validation in a larger group of patients (n = 22) by RT-qPCR method. However, only H19 and FENDRR showed significant upregulation in the validation cohort (adjusted p < 0.05). Further, we performed correlation analyses between expression levels of deregulated lincRNAs and GIST-associated oncogenes or GIST deregulated microRNAs. We found high positive correlations between expression of H19 and known GIST related oncogene ETV1, and between H19 and miR-455-3p. These findings expand the knowledge on lincRNAs deregulated in GIST and may be an important resource for the future studies investigating lincRNAs functionally relevant to GIST carcinogenesis.
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Affiliation(s)
- Ugne Gyvyte
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Juozas Kupcinskas
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
- Department of Gastroenterology, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Simonas Juzenas
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
- Institute of Clinical Molecular Biology, Christian-Albrechts University, Kiel, Germany
| | - Ruta Inciuraite
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Lina Poskiene
- Department of Pathological Anatomy, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Violeta Salteniene
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Alexander Link
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, Magdeburg, Germany
| | - Matteo Fassan
- Department of Medicine (DMID), Surgical Pathology & Cytopathology Unit, University of Padua, Padua, Italy
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts University, Kiel, Germany
| | - Limas Kupcinskas
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
- Department of Gastroenterology, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Jurgita Skieceviciene
- Institute for Digestive Research, Academy of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
- * E-mail:
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338
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Klinge CM. Non-Coding RNAs in Breast Cancer: Intracellular and Intercellular Communication. Noncoding RNA 2018; 4:E40. [PMID: 30545127 PMCID: PMC6316884 DOI: 10.3390/ncrna4040040] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 11/29/2018] [Accepted: 12/04/2018] [Indexed: 02/07/2023] Open
Abstract
Non-coding RNAs (ncRNAs) are regulators of intracellular and intercellular signaling in breast cancer. ncRNAs modulate intracellular signaling to control diverse cellular processes, including levels and activity of estrogen receptor α (ERα), proliferation, invasion, migration, apoptosis, and stemness. In addition, ncRNAs can be packaged into exosomes to provide intercellular communication by the transmission of microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) to cells locally or systemically. This review provides an overview of the biogenesis and roles of ncRNAs: small nucleolar RNA (snRNA), circular RNAs (circRNAs), PIWI-interacting RNAs (piRNAs), miRNAs, and lncRNAs in breast cancer. Since more is known about the miRNAs and lncRNAs that are expressed in breast tumors, their established targets as oncogenic drivers and tumor suppressors will be reviewed. The focus is on miRNAs and lncRNAs identified in breast tumors, since a number of ncRNAs identified in breast cancer cells are not dysregulated in breast tumors. The identity and putative function of selected lncRNAs increased: nuclear paraspeckle assembly transcript 1 (NEAT1), metastasis-associated lung adenocarcinoma transcript 1 (MALAT1), steroid receptor RNA activator 1 (SRA1), colon cancer associated transcript 2 (CCAT2), colorectal neoplasia differentially expressed (CRNDE), myocardial infarction associated transcript (MIAT), and long intergenic non-protein coding RNA, Regulator of Reprogramming (LINC-ROR); and decreased levels of maternally-expressed 3 (MEG3) in breast tumors have been observed as well. miRNAs and lncRNAs are considered targets of therapeutic intervention in breast cancer, but further work is needed to bring the promise of regulating their activities to clinical use.
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Affiliation(s)
- Carolyn M Klinge
- Department of Biochemistry & Molecular Genetics, University of Louisville School of Medicine, Louisville, KY 40292, USA.
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339
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Coker H, Wei G, Brockdorff N. m6A modification of non-coding RNA and the control of mammalian gene expression. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2018; 1862:310-318. [PMID: 30550772 DOI: 10.1016/j.bbagrm.2018.12.002] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 11/27/2018] [Accepted: 12/07/2018] [Indexed: 12/27/2022]
Abstract
The biology of non-coding RNA (ncRNA) and the regulation of mammalian gene expression is a rapidly expanding field. In this review, we consider how recent advances in technology, enabling the precise mapping of modifications to RNA transcripts, has provided new opportunities to dissect post-transcriptional gene regulation. With this has come the realisation that in the absence of translation, the modification of ncRNAs may play a fundamental role in their regulation, protein interactome and subsequent downstream effector functions. We focus upon modification of RNA by N6-methyladenosine (m6A); its readers, writers and erasers, before considering the differing role of m6A modified lncRNAs MALAT1 and Xist. This article is part of a Special Issue entitled: mRNA modifications in gene expression control edited by Dr. Soller Matthias and Dr. Fray Rupert.
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Affiliation(s)
- Heather Coker
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.
| | - Guifeng Wei
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
| | - Neil Brockdorff
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK
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340
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Guo X, Wu X, Han Y, Tian E, Cheng J. LncRNA MALAT1 protects cardiomyocytes from isoproterenol-induced apoptosis through sponging miR-558 to enhance ULK1-mediated protective autophagy. J Cell Physiol 2018; 234:10842-10854. [PMID: 30536615 DOI: 10.1002/jcp.27925] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 10/23/2018] [Indexed: 12/13/2022]
Abstract
Investigating the molecular mechanisms of myocardial infarction (MI) and subsequent heart failure have gained considerable attention worldwide. Long noncoding RNA (lncRNA) metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) has been previously demonstrated to regulate the proliferation and metastasis of several tumors. However, little is known about the effects of MALAT1 in MI and in regulating the cell date after MI. In our study, first, it was shown that the expression levels of MALAT1 were increased in the MI samples compared with normal tissues using quantitative reverse-transcription polymerase chain reaction. Then, MALAT1 knockdown could significantly decrease the cell viability and increase the apoptotic rates in isoproterenol (ISO)-treated H9C2 cells. In addition, we screened the possible target and found that miR-558 is its direct target using dual luciferase reporter assay, indicating that MALAT1 functioned as decoys sponging miR-558. Transfection of miR-558 mimic decreased the cell viability and enhanced the apoptosis. Furthermore, we revealed that miR-558 could downregulate ULK1 expression and suppressed ISO-induced protective autophagy. Activation of MALAT1/miR-558/ULK1 pathway protected H9C2 cells from ISO-induced mitochondria-dependent apoptosis. Finally, we used MALAT1-knockout mice to further demonstrated that MALAT1 protected cardiomyocytes from apoptosis and partially improved the cardiac functions upon ISO treatment. In conclusion, we elucidated that lncRNA MALAT1 protected cardiomyocytes from ISO-induced apoptosis by sponging miR-558 thus promoting ULK1-dependent autophagy. Targeting lncRNA MALAT1 might become a potential strategy in protecting cardiomyocytes during MI.
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Affiliation(s)
- Xiaoyan Guo
- Henan Province People's Hospital, People's Hospital of Zhengzhou University, Fuwai Central China Cardiovascular Hospital Zhengzhou, Henan, China
| | - Xiaoguang Wu
- Henan Province People's Hospital, People's Hospital of Zhengzhou University, Fuwai Central China Cardiovascular Hospital Zhengzhou, Henan, China
| | - Yan Han
- Henan Province People's Hospital, People's Hospital of Zhengzhou University, Fuwai Central China Cardiovascular Hospital Zhengzhou, Henan, China
| | - Erhu Tian
- Henan Province People's Hospital, People's Hospital of Zhengzhou University, Fuwai Central China Cardiovascular Hospital Zhengzhou, Henan, China
| | - Jiangtao Cheng
- Henan Province People's Hospital, People's Hospital of Zhengzhou University, Fuwai Central China Cardiovascular Hospital Zhengzhou, Henan, China
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341
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Masoumi F, Ghorbani S, Talebi F, Branton WG, Rajaei S, Power C, Noorbakhsh F. Malat1 long noncoding RNA regulates inflammation and leukocyte differentiation in experimental autoimmune encephalomyelitis. J Neuroimmunol 2018; 328:50-59. [PMID: 30583215 DOI: 10.1016/j.jneuroim.2018.11.013] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 11/15/2018] [Accepted: 11/27/2018] [Indexed: 12/15/2022]
Abstract
In this study, we investigated the contributions of the MALAT1 long noncoding RNA to autoimmune neuroinflammation in central nervous system tissues from patients with multiple sclerosis (MS) and mice with experimental autoimmune encephalomyelitis (EAE). Expression of MALAT1 was decreased in the spinal cords of EAE mice as well as in stimulated splenocytes and primary macrophages. MALAT1 downregulation by specific siRNAs enhanced the polarization of macrophages towards the M1 phenotype. Interestingly, siRNA-mediated MALAT1 downregulation shifted the pattern of T-cell differentiation towards a Th1/Th17 cell profile and decreased differentiation towards a Tregs phenotype. Proliferation of T-cells was also increased following MALAT1 downregulation. These data point to a potential anti-inflammatory effect for MALAT1 in the context of autoimmune neuroinflammation.
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Affiliation(s)
- Farimah Masoumi
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Samira Ghorbani
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Shefa Neuroscience Research Center, Khatam Alanbia Hospital, Tehran, Iran
| | - Farideh Talebi
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Shefa Neuroscience Research Center, Khatam Alanbia Hospital, Tehran, Iran
| | - William G Branton
- Department of Medicine (Neurology), University of Alberta, Edmonton, AB, Canada
| | - Samira Rajaei
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Christopher Power
- Department of Medicine (Neurology), University of Alberta, Edmonton, AB, Canada; Multiple Sclerosis Centre, University of Alberta, Edmonton, AB, Canada
| | - Farshid Noorbakhsh
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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342
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Wang Q, Lu G, Chen Z. MALAT1 promoted cell proliferation and migration via MALAT1/miR-155/MEF2A pathway in hypoxia of cardiac stem cells. J Cell Biochem 2018; 120:6384-6394. [PMID: 30362213 DOI: 10.1002/jcb.27925] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 09/27/2018] [Indexed: 01/21/2023]
Abstract
Accumulating evidence revealed that hypoxia contributed to many human diseases, including ischemic myocardium and heart failure (HF). In recent years, the roles of hypoxia in stem cell survival and cardiac biology have been studied extensively. However, the underlying molecular mechanisms remain to be elucidated. As a leading cause of HF, ischemic heart disease was correlated with hypoxia. In this study, we firstly constructed the hypoxia cell model by CoCl2 in cardiac stem cells (CSCs) and found that hypoxia induced the cell proliferation and migration potential in CSCs. Then, we demonstrated that the expression of metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) was promoted in CoCl2 -induced CSCs hypoxia model. Furthermore, we found that knockdown of MALAT1 inhibited the cell proliferation and migration in CoCl2 -induced CSCs hypoxia model. In addition, we revealed that MALAT1 regulated the microRNA-155 (miR-155) expression in CSCs under both the normal and hypoxia conditions and further, manipulation of the miR-155 expression affected the role of MALAT1 in CoCl2 -induced CSCs hypoxia cell model. We then illustrated that miR-155 regulated the myocyte enhancer factor 2A (MEF2A) expression in CSCs under both the normal and hypoxia conditions and further, changing the expression of MEF2A affected the role of miR-155. Finally, we demonstrated that MALAT1 regulated the MEF2A expression and exerted its role via modulation of the MALAT1/miR-155/MEF2A pathway. Taken together, our study illustrated that MALAT1 promoted the cell proliferation and migration in CoCl2 -induced CSCs hypoxia model, acting mechanistically by promoting MEF2A expression via "sponging" miR-155.
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Affiliation(s)
- Qiuyun Wang
- Department of Cardiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Guoping Lu
- Department of Cardiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zhenyue Chen
- Department of Cardiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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343
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Shark genomes provide insights into elasmobranch evolution and the origin of vertebrates. Nat Ecol Evol 2018; 2:1761-1771. [PMID: 30297745 DOI: 10.1038/s41559-018-0673-5] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 08/16/2018] [Indexed: 02/07/2023]
Abstract
Modern cartilaginous fishes are divided into elasmobranchs (sharks, rays and skates) and chimaeras, and the lack of established whole-genome sequences for the former has prevented our understanding of early vertebrate evolution and the unique phenotypes of elasmobranchs. Here we present de novo whole-genome assemblies of brownbanded bamboo shark and cloudy catshark and an improved assembly of the whale shark genome. These relatively large genomes (3.8-6.7 Gbp) contain sparse distributions of coding genes and regulatory elements and exhibit reduced molecular evolutionary rates. Our thorough genome annotation revealed Hox C genes previously hypothesized to have been lost, as well as distinct gene repertories of opsins and olfactory receptors that would be associated with adaptation to unique underwater niches. We also show the early establishment of the genetic machinery governing mammalian homoeostasis and reproduction at the jawed vertebrate ancestor. This study, supported by genomic, transcriptomic and epigenomic resources, provides a foundation for the comprehensive, molecular exploration of phenotypes unique to sharks and insights into the evolutionary origins of vertebrates.
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344
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Li Z, Li X, Chen C, Li S, Shen J, Tse G, Chan MTV, Wu WKK. Long non-coding RNAs in nucleus pulposus cell function and intervertebral disc degeneration. Cell Prolif 2018; 51:e12483. [PMID: 30039593 PMCID: PMC6528936 DOI: 10.1111/cpr.12483] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Accepted: 05/15/2018] [Indexed: 12/12/2022] Open
Abstract
Intervertebral disc degeneration (IDD) is the major cause of low back pain which incurs a significant public-health and economic burden. The aetiology of IDD is complex, with developmental, genetic, biomechanical and biochemical factors contributing to the disease development. Deregulated phenotypes of nucleus pulposus cells, including aberrant differentiation, apoptosis, proliferation and extracellular matrix deposition, are involved in the initiation and progression of IDD. Non-coding RNAs, including long non-coding RNAs (lncRNAs), have recently been identified as important regulators of gene expression. Research into their roles in IDD has been very active over the past 5 years. Our review summarizes current research regarding the roles of deregulated lncRNAs (eg, RP11-296A18.3, TUG1, HCG18) in modulating nucleus pulposus cell functions in IDD. These exciting findings suggest that specific modulation of lncRNAs or their downstream signalling pathways might be an attractive approach for developing novel therapeutics for IDD.
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Affiliation(s)
- Zheng Li
- Department of Orthopaedic SurgeryPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Xingye Li
- Department of Orthopedic SurgeryBeijing Jishuitan HospitalFourth Clinical College of Peking UniversityJishuitan Orthopaedic College of Tsinghua UniversityBeijingChina
| | - Chong Chen
- Department of Orthopaedic SurgeryPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Shugang Li
- Department of Orthopaedic SurgeryPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Jianxiong Shen
- Department of Orthopaedic SurgeryPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Gary Tse
- Department of Medicine and TherapeuticsThe Chinese University of Hong KongHong KongChina
- Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong KongChina
| | - Matthew T. V. Chan
- Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong KongChina
| | - William K. K. Wu
- Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong KongChina
- Department of Anaesthesia and Intensive Care and State Key Laboratory of Digestive DiseasesThe Chinese University of Hong KongHong KongChina
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345
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MALAT1-miR663a negative feedback loop in colon cancer cell functions through direct miRNA-lncRNA binding. Cell Death Dis 2018; 9:857. [PMID: 30154407 PMCID: PMC6113222 DOI: 10.1038/s41419-018-0925-y] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 07/03/2018] [Accepted: 07/25/2018] [Indexed: 12/20/2022]
Abstract
The lncRNA MALAT1 has multiple biological functions, including influencing RNA processing, miRNA sponging, and cancer development. It is acknowledged that miR663a and its targets are inflammation-related genes frequently deregulated in many cancers. The associations between MALAT1 and miR663a and their target genes remain unknown. In this study, it was found that in colon cancer (CC) cells, MALAT1 and miR663a were reciprocally repressed in cDNA array screening and qRT-PCR analysis. However, MALAT1 was significantly upregulated in CC tissues, and miR663a was significantly downregulated relative to the corresponding surgical margin (SM) tissues. An inverse relationship between MALAT1 and miR663a expression was detected among CC tissue samples (n = 172, r = -0.333, p < 0.0001). The RNA-pulldown results showed MALAT1 lncRNA-miR663a binding. The results of luciferase-reporter analysis further revealed that the MALAT1 7038-7059 nt fragment was the miR663a seed sequence. Both miR663a knockdown and MALAT1 activation alone significantly upregulated the expression levels of miR663a targets, including TGFB1, PIK3CD, P53, P21, and JUND, in the CC cell lines HCT116 and SW480. A positive relationship was also observed between the expression levels of MALAT1 and these miR663a targets in the above 172 CC samples and 160 CC samples in publicly available databases. In addition, reciprocal abolishment of the effects of miR663a overexpression and MALAT1 activation on the proliferation, migration, and invasion of cancer cells was also observed, while miR663a upregulation and MALAT1 activation alone inhibited and promoted the behaviors of these CC cell lines, respectively. All these suggested that, as a competing endogenous lncRNA, MALAT1 maybe a dominant protector for the degradation of miR663a targets. miR663a and MALAT1 may consist of a negative feedback loop to determine their roles in CC development.
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346
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Li J, Cui Z, Li H, Lv X, Gao M, Yang Z, Bi Y, Zhang Z, Wang S, Zhou B, Yin Z. Clinicopathological and prognostic significance of long noncoding RNA MALAT1 in human cancers: a review and meta-analysis. Cancer Cell Int 2018; 18:109. [PMID: 30093838 PMCID: PMC6080354 DOI: 10.1186/s12935-018-0606-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 07/31/2018] [Indexed: 12/11/2022] Open
Abstract
Background The aberrant regulation of MALAT1 has been indicated to be involved in various carcinogenic pathways contributing to the tumourigenesis and progression of cancers. The current meta-analysis summarized the research advances of MALAT1 functions and analyzed its prognostic value among multiple types of cancers. Methods Eligible studies were identified through retrieving the PubMed, Web of Science, and CNKI databases, up to Mar 1, 2018. 28 studies of 5436 patients and 36 studies of 3325 patients were enrolled in the meta-analysis to evaluate the association of MALAT1 expression with survival outcomes and clinical parameters. Results The results demonstrated that over-expression of MALAT1 may predict lymph node metastasis (pooled OR = 2.335, 95% CI 1.606–3.395, P = 0.000) and distant metastasis (pooled OR = 2.456, 95% CI 1.407–4.286, P = 0.002). Moreover, MALAT1 was also related with tumour size (pooled OR = 1.875, 95% CI 1.257–2.795, P = 0.002) and TNM stage (pooled OR = 2.034, 95% CI 1.111–3.724, P = 0.021). Additionally, elevated MALAT1 expression could predict poor OS (pooled HR = 2.298, 95% CI 1.953–2.704, P = 0.000), DFS (pooled HR = 2.036, 95% CI 1.240–3.342, P = 0.005), RFS (pooled HR = 2.491, 95% CI 1.505–4.123, P = 0.000), DSS (pooled HR = 2.098, 95% CI 1.372–3.211, P = 0.001) and PFS (pooled HR = 1.842, 95% CI 1.138–2.983, P = 0.013) in multivariate model. Importantly, subgroup analyses disclosed that increased MALAT1 expression had a poor OS among different cancer types (Estrogen-dependent cancer: pooled HR = 2.656, 95% CI 1.560–4.523; urological cancer: pooled HR = 1.952, 95% CI 1.189–3.204; glioma: pooled HR = 2.315, 95% CI 1.643–3.263; digestive cancer: pooled HR = 2.451, 95% CI 1.862–3.227). Conclusions The present findings demonstrated that MALAT1 may be a novel biomarker for predicting survival outcome, lymph node metastasis and distant metastasis. Electronic supplementary material The online version of this article (10.1186/s12935-018-0606-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Juan Li
- 1Department of Epidemiology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122 People's Republic of China.,2Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122 People's Republic of China
| | - Zhigang Cui
- 3School of Nursing, China Medical University, Shenyang, 110122 China
| | - Hang Li
- 1Department of Epidemiology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122 People's Republic of China.,2Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122 People's Republic of China
| | - Xiaoting Lv
- 1Department of Epidemiology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122 People's Republic of China.,2Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122 People's Republic of China
| | - Min Gao
- 1Department of Epidemiology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122 People's Republic of China.,2Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122 People's Republic of China
| | - Zitai Yang
- 1Department of Epidemiology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122 People's Republic of China.,2Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122 People's Republic of China
| | - Yanhong Bi
- 1Department of Epidemiology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122 People's Republic of China.,2Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122 People's Republic of China
| | - Ziwei Zhang
- 1Department of Epidemiology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122 People's Republic of China.,2Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122 People's Republic of China
| | - Shengli Wang
- 1Department of Epidemiology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122 People's Republic of China.,2Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122 People's Republic of China
| | - Baosen Zhou
- 1Department of Epidemiology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122 People's Republic of China.,2Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122 People's Republic of China
| | - Zhihua Yin
- 1Department of Epidemiology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122 People's Republic of China.,2Key Laboratory of Cancer Etiology and Intervention, University of Liaoning Province, Shenyang, 110122 People's Republic of China
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Zhang X, Tang X, Hamblin MH, Yin KJ. Long Non-Coding RNA Malat1 Regulates Angiogenesis in Hindlimb Ischemia. Int J Mol Sci 2018; 19:ijms19061723. [PMID: 29891768 PMCID: PMC6032369 DOI: 10.3390/ijms19061723] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 05/28/2018] [Accepted: 06/05/2018] [Indexed: 11/29/2022] Open
Abstract
Angiogenesis is a complex process that depends on the delicate regulation of gene expression. Dysregulation of transcription during angiogenesis often leads to various human diseases. Emerging evidence has recently begun to show that long non-coding RNAs (lncRNAs) may mediate angiogenesis in both physiological and pathological conditions; concurrently, underlying molecular mechanisms are largely unexplored. Previously, our lab identified metastasis associates lung adenocarcinoma transcript 1 (Malat1) as an oxygen-glucose deprivation (OGD)-responsive endothelial lncRNA. Here we reported that genetic deficiency of Malat1 leads to reduced blood vessel formation and local blood flow perfusion in mouse hind limbs at one to four weeks after hindlimb ischemia. Malat1 and vascular endothelial growth factor receptor 2 (VEGFR2) levels were found to be increased in both cultured mouse primary skeletal muscle microvascular endothelial cells (SMMECs) after 16 h OGD followed by 24 h reperfusion and in mouse gastrocnemius muscle that underwent hindlimb ischemia followed by 28 days of reperfusion. Moreover, Malat1 silencing by locked nucleic acid (LNA)-GapmeRs significantly reduced tube formation, cell migration, and cell proliferation in SMMEC cultures. Mechanistically, RNA subcellular isolation and RNA-immunoprecipitation experiments demonstrate that Malat1 directly targets VEGFR2 to facilitate angiogenesis. The results suggest that Malat1 regulates cell-autonomous angiogenesis through direct regulation of VEGFR2.
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Affiliation(s)
- Xuejing Zhang
- Pittsburgh Institute of Brain Disorders & Recovery, Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
| | - Xuelian Tang
- Pittsburgh Institute of Brain Disorders & Recovery, Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
| | - Milton H Hamblin
- Department of Pharmacology, Tulane University School of Medicine, 1430 Tulane Avenue SL83, New Orleans, LA 70112, USA.
| | - Ke-Jie Yin
- Pittsburgh Institute of Brain Disorders & Recovery, Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
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348
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Huang C, Han J, Wu Y, Li S, Wang Q, Lin W, Zhu J. Exosomal MALAT1 derived from oxidized low-density lipoprotein-treated endothelial cells promotes M2 macrophage polarization. Mol Med Rep 2018; 18:509-515. [PMID: 29750307 DOI: 10.3892/mmr.2018.8982] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 01/29/2018] [Indexed: 11/06/2022] Open
Abstract
Oxidized low-density lipoprotein (oxLDL)-induced injury and apoptosis of endothelial cells are important initial events in numerous cardiovascular diseases. Following activation by oxLDL, monocytes adhere to endothelial cells, migrate into the subendothelial spaces and then undergo differentiation into macrophages, which subsequently induces the formation of atherosclerotic lesions. However, the mechanisms underlying the activation of macrophage differentiation by oxLDL-treated endothelial cells remain unclear. In the present study, it was demonstrated that exosomal metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) was increased in oxLDL-treated human umbilical vein endothelial cells. When co-cultured with monocytes, exosomes extracted from oxLDL-treated HUVECs were endocytosed. Furthermore, exosomes derived from oxLDL-treated endothelial cells were revealed to promote M2 macrophage polarization, as reverse transcription-quantitative polymerase chain reaction, western blotting and ELISA analyses demonstrated increases in the expression of M2 macrophage markers, including macrophage mannose receptor 1 (also termed CD206), arginase-1 and interleukin (IL)-10, and decreases in the expression of the M1 macrophage marker, IL-12. Furthermore, the suppression of MALAT1 expression in monocytes was demonstrated to reverse exosome-mediated M2 macrophage polarization. In conclusion, the results of the present study revealed a novel mechanism underlying the onset of atherogenesis associated with endothelial cells and macrophages: Exosomal MALAT1 derived from oxLDL-treated endothelial cells promoted M2 macrophage polarization. This result may provide a novel scientific basis for the understanding of atherosclerosis progression.
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Affiliation(s)
- Chaoyang Huang
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Jie Han
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Yutao Wu
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Shan Li
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Qiwen Wang
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Wenjuan Lin
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Jianhua Zhu
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
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349
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Klinge CM. Non-coding RNAs: long non-coding RNAs and microRNAs in endocrine-related cancers. Endocr Relat Cancer 2018; 25:R259-R282. [PMID: 29440232 DOI: 10.1530/erc-17-0548] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 02/12/2018] [Indexed: 12/11/2022]
Abstract
The human genome is 'pervasively transcribed' leading to a complex array of non-coding RNAs (ncRNAs) that far outnumber coding mRNAs. ncRNAs have regulatory roles in transcription and post-transcriptional processes as well numerous cellular functions that remain to be fully described. Best characterized of the 'expanding universe' of ncRNAs are the ~22 nucleotide microRNAs (miRNAs) that base-pair to target mRNA's 3' untranslated region within the RNA-induced silencing complex (RISC) and block translation and may stimulate mRNA transcript degradation. Long non-coding RNAs (lncRNAs) are classified as >200 nucleotides in length, but range up to several kb and are heterogeneous in genomic origin and function. lncRNAs fold into structures that interact with DNA, RNA and proteins to regulate chromatin dynamics, protein complex assembly, transcription, telomere biology and splicing. Some lncRNAs act as sponges for miRNAs and decoys for proteins. Nuclear-encoded lncRNAs can be taken up by mitochondria and lncRNAs are transcribed from mtDNA. Both miRNAs and lncRNAs are dysregulated in endocrine cancers. This review provides an overview on the current understanding of the regulation and function of selected lncRNAs and miRNAs, and their interaction, in endocrine-related cancers: breast, prostate, endometrial and thyroid.
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350
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LncRNA MALAT1 is up-regulated in diabetic gastroparesis and involved in high-glucose-induced cellular processes in human gastric smooth muscle cells. Biochem Biophys Res Commun 2018; 496:401-406. [PMID: 29317209 DOI: 10.1016/j.bbrc.2018.01.038] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 01/05/2018] [Indexed: 12/25/2022]
Abstract
Recent years, widespread long non-coding RNAs (lncRNAs) were identified and known as regulator of gene expression. Diabetic gastroparesis (DGP) is one of the most common chronic complications of diabetes mellitus. There was no research reported the role of lncRNAs in DGP. In this study, we firstly established a rat model of DGP by STZ injection. Then, we detected the expression of MALAT1 and found that expression of MALAT1 was up-regulated in rat model of DGP, comparing to the control group (P < .01). Furthermore, we revealed that MALAT1 expression was increased in the samples from diabetic patients with DGP symptoms, in comparison with the control. In addition, we demonstrated that the inhibition of MALAT1 increased the expression of α-SMA and SM myosin heavy chains, reduced the cell viability, inhibited the potential of cell migration and induced cell apoptosis in human gastric smooth muscle cells (SMCs). Ultimately, we found that the regulation of MALAT1 expression modulated the function of high-glucose stimulation in human gastric SMCs. Therefore, our study firstly indicated that MALAT1 was up-regulated in DGP and played an important role in the pathogenesis of DGP.
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