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lncRNA and Osteosarcoma

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https://www.readbyqxmd.com/read/28642170/lncrna-dancr-promotes-tumor-progression-and-cancer-stemness-features-in-osteosarcoma-by-upregulating-axl-via-mir-33a-5p-inhibition
#1
Nian Jiang, Xuedi Wang, Xianbiao Xie, Yan Liao, Ni Liu, Junfeng Liu, Nabo Miao, Jingnan Shen, Tingsheng Peng
lncRNAs regulate the initiation and progression of osteosarcoma, although the mechanism by which this occurs remains unknown. The present study shows that over-expression of the lncRNA DANCR increased osteosarcoma cell proliferation, migration, and invasion in vitro, as well as promoted xenograft tumor growth and lung metastasis in vivo. Mechanistically, DANCR promoted osteosarcoma progression by mediating cancer stem cells (CSC) features. Moreover, pull-down assays and luciferase reporter assays indicated that DANCR upregulated expression of the receptor tyrosine kinase AXL by competitively binding to miR-33a-5p...
June 19, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28636101/knockdown-of-lncrna-meg3-inhibits-viability-migration-and-invasion-and-promotes-apoptosis-by-sponging-mir-127-in-osteosarcoma-cell
#2
Yang Wang, Daliang Kong
Osteosarcoma (OS) is one of the most common bone malignancies and occurs almost exclusively in children and adolescents. This study aimed to explore the role of lncRNA maternally expressed gene 3 (MEG3) in OS cells growth and metastasis, and to uncover the possible underlying mechanism. In this study, the expressions of MEG3 in five OS cell lines (MG63, OS-732, SaOS, G292, and 143B) and in a human osteoblast cell line hFOB1.19 were measured by qRT-PCR analysis. The expressions of MEG3, miR-127 and ZEB1 in OS-732 cells were overexpressed or suppressed by transfection...
June 21, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28602700/long-non-coding-rna-pvt1-promotes-glycolysis-and-tumor-progression-by-regulating-mir-497-hk2-axis-in-osteosarcoma
#3
Jingyi Song, Xiaolin Wu, Fengxia Liu, Maohua Li, Yuerong Sun, Yan Wang, Chao Wang, Kai Zhu, Xiujuan Jia, Bing Wang, Xuexiao Ma
Cancer cells usually utilize glucose as a carbon source for aerobic glycolysis, a phenomenon known as the Warburg effect. Increasing studies have shown that PVT1 (a long non-coding RNA, lncRNA) functions as critical regulator of multiple cancers. However, it remains totally unknown whether and how PVT1 regulates glucose metabolism in OS cells. In this study, we found that the expression of PVT1 were specifically increased in OS cells and tissues, and the upregulated PVT1 indicated poor prognosis. Glucose uptake, lactate production, and the expression of HK2 in OS cells were increased by overexpression of PVT1, while decreased by PVT1 knockdown...
June 9, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28590934/lncrna-fendrr-sensitizes-doxorubicin-resistance-of-osteosarcoma-cells-through-down-regulating-abcb1-and-abcc1
#4
Zhu Kun-Peng, Ma Xiao-Long, Zhang Chun-Lin
Long noncoding RNAs (LncRNAs) act as crucial regulators in various cancers including osteosarcoma (OS), yet their potential roles and molecular mechanisms in OS chemoresistance remain unclear. In the present study, we investigated the role and potential regulatory mechanism of the most down-regulated expressed lncRNA, FENDRR screened by our previous lncRNA microarray analysis between the paired doxorubicin-resistant and sensitive human osteosarcoma cell lines (MG63/DXR vs MG63). FENDRR expression was down-regulated in the doxorubicin-resistant OS cell lines and tissues and negatively correlated to the poor prognosis of OS patients...
May 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28560950/malat1-promotes-the-proliferation-and-metastasis-of-osteosarcoma-cells-by-activating-the-rac1-jnk-pathway-via-targeting-mir-509
#5
Yong Zhang, Qingfeng Dai, Fanying Zeng, Haichun Liu
Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is a long noncoding RNA (lncRNA) that contributes to the initiation and development of many solid tumors, including osteosarcoma (OS). In this study, we showed that MALAT1 was increased in human OS tissues and cell lines. MALAT1 knockdown suppressed OS cell growth and metastasis, induced OS cell apoptosis and delayed tumor growth in an OS xenograft model. We also detected downregulation of microRNA-509 (miR-509), a suppressor of OS growth, in OS tissues and cell lines...
May 26, 2017: Oncology Research
https://www.readbyqxmd.com/read/28558357/long-non-coding-rna-hoxa11-as-functions-as-a-competing-endogenous-rna-to-regulate-rock1-expression-by-sponging-mir-124-3p-in-osteosarcoma
#6
Mingxing Cui, Jingyu Wang, Qingjiang Li, Junlei Zhang, Jinling Jia, Xinli Zhan
Long non-coding RNAs (lncRNAs) have been strongly associated with various types of cancer. this study was to explore the critical role of lncRNA HOXA11-AS in osteosarcoma (OS) progression. Briefly, we should that the expression of HOXA11-AS was upregulated in OS tissues and cell lines. The high expression of HOXA11-AS was associated with advanced clinical stage, distant metastasis and poor overall survival of OS. In addition, We found that HOXA11-AS silencing suppressed OS cells proliferation, invasion and induced cell arrest in G0/G1 phase...
August 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28550663/-sensitivity-of-doxorubicin-resistant-osteosarcoma-cells-to-doxorubicin-regulated-by-long-non-coding-rna-nr_036444
#7
K P Zhu, C L Zhang
Objective: To investigate the mechanism of long non-coding RNA (LncRNA) NR_036444 mediated sensitivity of multidrug-resistant osteosarcoma to doxorubicin. Methods: LncRNA-mRNA combined microarray was used to screen the differential expressions of lncRNA and mRNA in doxorubicin-resistant MG63/DXR osteosarcoma cells and their paired doxorubicin-sensitive MG63 cells; qRT-PCR was used to check the consistency of microarray. LncRNA NR_036444 was over-expressed in MG63/DXR cells by lentrvirus. CCK-8 array was used to evaluate cell proliferation and the sensitivity of cells to doxorubicin; Flow cytometry was used to evaluate cell cycle and apoptosis...
April 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28519068/long-noncoding-rna-gas5-suppresses-cell-growth-and-epithelial-mesenchymal-transition-in-osteosarcoma-by-regulating-the-mir-221-arhi-pathway
#8
Kaishan Ye, Shuanke Wang, Haihong Zhang, Hua Han, Bing Ma, Wei Nan
Dysregulated long noncoding RNAs (lncRNAs) and microRNAs (miRNAs) play key roles in the development of human cancers. The lncRNA growth arrest-specific 5 (GAS5) is reported to be a tumor suppressor in multiple cancers. However, the roles of GAS5 and its related miRNAs in osteosarcoma are poorly understood. This study explored the potential functions and mechanisms of GAS5 in the tumorigenesis of osteosarcoma. Here, the expression of GAS5, miR-221 and aplasia Ras homologue member I (ARHI) was determined in osteosarcoma tissues and cells by Real-time PCR (RT-qPCR)...
May 18, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28469961/long-non-coding-rna-ak093407-promotes-proliferation-and-inhibits-apoptosis-of-human-osteosarcoma-cells-via-stat3-activation
#9
Yongkun Wang, Tingting Liang, Yao Wang, Yan Huang, Ye Li
Osteosarcoma is a malignant tumor of the skeletal system. Long non-coding RNAs (lncRNAs) have been shown to play significant role in osteosarcoma. The present study evaluated the effects and mechanism of lncRNA AK093407 in osteosarcoma. The study included human osteosarcoma cell line, U-2OS. Cell proliferation, viability, and apoptosis were measured using Ki-67 proliferation assay, MTT assay, and Annexin V/PI staining assay, respectively. Relative mRNA and protein expressions were measured using qRT-PCR and western blot, respectively...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28469952/long-noncoding-rna-atb-promotes-osteosarcoma-cell-proliferation-migration-and-invasion-by-suppressing-mir-200s
#10
Feng Han, Changhe Wang, Yi Wang, Liang Zhang
Long noncoding RNA activated by transforming growth factor-β (lncRNA-ATB) is a novel lncRNA, which is recently reported to have critical roles in carcinogenesis and progression of several cancers. However, the expression, clinical values, biological roles, and underlying molecular mechanisms of lncRNA-ATB in osteosarcoma are still known. In this study, we measured lncRNA-ATB expression in serum and osteosarcoma tissues of osteosarcoma patients, analyzed its diagnostic and prognostic values. Serum lncRNA-ATB is increased in osteosarcoma patients and could accurately discriminate osteosarcoma patients from healthy controls...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28466821/long-non-codingrna-lncrna-tug1-and-the-prognosis-of-cancer-a-meta-analysis
#11
X-H Yu, W Guo, J Zhang, C Ma, A-J Chu, B-L Wen, X Zhang, X-Y Yan, C-M Wu, D-M Wang, Y-L Qu
Some studies assessed the association between lncRNA taurine-upregulated gene 1 (TUG1) and the survival in cancer. However, the results were inconclusive.  Therefore, we performed a meta-analysis to determine this association. We used the following electronic databases to search for eligible literature: PubMed, Embase, Chinese National Knowledge Infrastructure (CNKI) and Wanfang. We used ORs and 95% CIs to measure the association between TUG1 and the survival of cancer. There was no significant association between TUG1 and OS of cancer (HR=1...
March 31, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28415638/altered-long-non-coding-rnas-predict-worse-outcome-in-osteosarcoma-patients-evidence-from-a-meta-analysis
#12
Yanliang Yang, Shunli Wang, Teng Li
Long non-coding RNAs (lncRNAs) are emerging as promising prognostic biomarkers in an expanding list of malignant neoplasms. Here, we sought to investigate the strength of associations between lncRNA signatures and clinical outcomes in osteosarcoma. We conducted a systematic search of the online databases from inception to July 2016. Hazard ratios (HRs) with corresponding 95% confidence intervals (CIs) for the primary endpoints of overall survival (OS), progression-free survival (PFS) or event-free survival (EFS) were extracted and meta-analyzed...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415557/long-non-coding-rna-cta-sensitizes-osteosarcoma-cells-to-doxorubicin-through-inhibition-of-autophagy
#13
Zhengguang Wang, Zhendong Liu, Song Wu
Recently, several long non-coding RNAs (lncRNAs) have been implicated in osteosarcoma (OS). However, the regulatory roles of lncRNAs in chemotherapy resistance of OS still remain unclear. This study aimed to screen a novel lncRNA that contributes to chemotherapeutic resistance of OS, and to explore the underlying mechanisms. Our data showed that lncRNA CTA was markedly downregulated in OS tissues compared to their matched non-tumor tissues, and low expression of lncRNA CTA was significantly associated with the advanced clinical stage and tumor size...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28411362/knockdown-of-long-noncoding-rna-tug1-inhibits-the-proliferation-and-cellular-invasion-of-osteosarcoma-cells-by-sponging-mir-153
#14
Heping Wang, Yanzhang Yu, Shuxin Fan, Leifeng Luo
Long noncoding RNA (lncRNA) Taurine-upregulated gene 1 (TUG1) has been confirmed to be involved in the progression of various cancers, however, its mechanism of action in osteosarcoma has not been well addressed. In our study, TUG1 was overexpressed and miR-153 was downregulated in osteosarcoma tissues and cell lines. Loss-of-function assay showed that TUG1 knockdown suppressed the viability, colony formation, and invasion of osteosarcoma cells in vitro. Moreover, TUG1 was confirmed to be a miR-153 sponge. Ectopic expression of TUG1 reversed the inhibitory effect of miR-153 on the proliferation and invasion of osteosarcoma cells...
April 12, 2017: Oncology Research
https://www.readbyqxmd.com/read/28409547/long-non-coding-rna-xist-promotes-osteosarcoma-progression-by-targeting-ras-related-protein-rap2b-via-mir-320b
#15
Gong-Yi Lv, Jun Miao, Xiao-Lin Zhang
Abnormal expression of long non-coding RNA (lncRNAs) often contributes to unrestricted growth and invasion of cancer cells. LncRNA X-inactive specific transcript (XIST) expression is up-regulated in several cancers, however, its underlying mechanism in osteosarcoma (OS) has not been elucidated. In the present study, we found that XIST expression was significantly increased in osteosarcoma tissues and cell lines by LncRNA Profiler and qRT-PCR. The effects of XIST and miR-320b on osteosarcoma cell proliferation and invasion were studied by MTT assay and Transwell invasion assay...
April 12, 2017: Oncology Research
https://www.readbyqxmd.com/read/28390115/long-noncoding-rna-linc01133-sponges-mir-422a-to-aggravate-the-tumorigenesis-of-human-osteosarcoma
#16
Hai-Feng Zeng, Hai-Yan Qiu, Fa-Bo Feng
Long noncoding RNAs (lncRNAs) have been verified to participate in various types of malignant tumor including osteosarcoma (OS), which is the most common primary bone tumor with outstanding morbidity. Although increasing lncRNAs have been reported to mediate occurrence of OS, the potential mechanisms are still unclear. This study intends to uncover the mechanism by which lncRNA LINC01133 functions as miRNAs sponge to mediate OS tumorigenicity. In this study, we found that the expression level of LINC01133 was statistically up-regulated in OS tumor tissue and cell lines compared to noncancerous tissue and normal human osteoplastic cell line...
March 28, 2017: Oncology Research
https://www.readbyqxmd.com/read/28388584/malat1-predicts-poor-survival-in-osteosarcoma-patients-and-promotes-cell-metastasis-through-associating-with-ezh2
#17
Yanqing Huo, Qingbo Li, Xiqian Wang, Xiejia Jiao, Jiachun Zheng, Zhiqiang Li, Xiaohan Pan
Osteosarcoma is the most common type of bone cancer, especially in children and young adults. Recently, long noncoding RNAs (lncRNAs) have emerged as new prognostic markers and gene regulators in several cancers, including osteosarcoma. In this study, we investigated the contributions of the lncRNA MALAT1 in osteosarcoma with a specific focus on its transcriptional regulation and its interaction with EZH2. Our results showed that MALAT1 was significantly increased in osteosarcoma specimens and cell lines. ROC curve analysis showed that MALAT1 had a higher area under the curve than alkaline phosphatase, and Kaplan-Meier survival analysis indicated that patients with high serum levels of MALAT1 showed reduced survival rate...
March 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28323030/antisense-lncrna-foxc2-as1-promotes-doxorubicin-resistance-in-osteosarcoma-by-increasing-the-expression-of-foxc2
#18
Chun-Lin Zhang, Kun-Peng Zhu, Xiao-Long Ma
Recent efforts have revealed that numerous natural antisense lncRNAs play a crucial role in the regulation of cancer biology. Here, based on our previous study, we further identified that the lncRNA FOXC2-AS1 and its antisense transcript FOXC2 are positively up-regulated in doxorubicin-resistant osteosarcoma cell lines and tissues, correlate with poor prognosis and promote doxorubicin resistance in osteosarcoma cells in vitro and in vivo. In addition, FOXC2-AS1 and FOXC2 are mainly located in the cytoplasm and form an RNA-RNA double-stranded structure in the overlapping region, which is necessary for FOXC2-AS1 to regulate the expression of FOXC2 at both the transcription and post-transcription levels...
June 28, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28123573/transcription-factor-oct4-promotes-osteosarcoma-by-regulating-lncrna-ak055347
#19
Hongwu Fan, Guangyao Liu, Changfu Zhao, Xuefeng Li, Xiaoyu Yang
Osteosarcoma is the most common primary bone tumor in children and adolescents, typically presenting with a poor prognosis. Octamer-binding transcription factor 4 (Oct4) protein, encoded by the POU class 5 homeobox 1 gene, is important in maintaining self-renewal of pluripotent stem cells, and is closely associated with cancer. However, its role in osteosarcoma remains to be elucidated. The present study observed Oct4 was markedly increased in osteosarcoma cell lines and in human osteosarcoma tissue samples...
January 2017: Oncology Letters
https://www.readbyqxmd.com/read/28077810/increased-expression-of-long-non-coding-rna-bcar4-is-predictive-of-poor-prognosis-in-patients-with-non-small-cell-lung-cancer
#20
Jianhua Gong, Han Zhang, Li He, Lixin Wang, Jipeng Wang
Lung cancer is the most common human cancer, and the majority of lung cancer cases are categorized as non-small cell lung cancer (NSCLC). Long non-coding RNAs (lncRNAs) play key roles in the development and progression of human cancers. LncRNA breast cancer anti-estrogen resistance 4 (BCAR4) has been identified as an oncogenic lncRNA involved in the progression of breast cancer and osteosarcoma. However, the clinical significance of the lncRNA BCAR4 in NSCLC remains largely unclear. In the present study, real-time quantitative reverse transcriptase-polymerase chain reaction was used to examine the relative level of lncRNA BCAR4 in 68 cases of NSCLC tissues and their adjacent non-tumor tissues...
January 2017: Tohoku Journal of Experimental Medicine
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