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Search Results (27)
  • Open Access

    ARTICLE

    Overexpression of miR-1283 Inhibits Cell Proliferation and Invasion of Glioma Cells by Targeting ATF4

    Hao Chen, Yi Zhang, Hai Su, Hui Shi, Qijiang Xiong, Zulu Su

    Oncology Research, Vol.27, No.3, pp. 325-334, 2019, DOI:10.3727/096504018X15251282086836

    Abstract It is well known that activating transcription factor 4 (ATF4) expression is closely associated with progression of many cancers. We found that miR-1283 could directly target ATF4. However, the precise mechanisms of miR-1283 in glioma have not been well clarified. Our study aimed to explore the interaction between ATF4 and miR-1283 in glioma. In this study, we found that the level of miR-1283 was dramatically decreased in glioma tissues and cell lines, the expression of ATF4 was significantly increased, and the low level of miR-1283 was closely associated with high expression of ATF4 in glioma tissues. Moreover, introduction of miR-1283… More >

  • Open Access

    ARTICLE

    miR-374a Inhibitor Enhances Etoposide-Induced Cytotoxicity Against Glioma Cells Through Upregulation of FOXO1

    Wei Ni*†‡, Lin Luo*†‡, Ping Zuo*†‡, Renping Li*†‡, Xiaobing Xu*†‡, Fan Wen*†‡, Dong Hu*†‡

    Oncology Research, Vol.27, No.6, pp. 703-712, 2019, DOI:10.3727/096504018X15426775024905

    Abstract Glioma is a commonly diagnosed brain tumor that shows high mortality rate. Despite the great advancement of cancer therapy in recent years, chemotherapy is still an important approach for treatment of glioma. However, long-term chemotherapy usually causes serious side effects or complications. It is desirable to take strategies to enhance the efficacy of current chemotherapy. In the present study, we observed obvious upregulation of miR-374a in glioma cells. More importantly, we found that knockdown of miR-374a was able to enhance the etoposide-induced cytotoxicity against glioma cells. Mechanically, we demonstrated that FOXO1 was the target of miR-374a in glioma. Treatment with… More >

  • Open Access

    ARTICLE

    Knockdown of lncRNA PVT1 Inhibits Glioma Progression by Regulating miR-424 Expression

    Yanjie Han*1, Xinxin Li*1, Fei He†1, Jiliang Yan*, Chunyan Ma*, Xiaoli Zheng, Jinli Zhang*, Donghui Zhang*, Cuiping Meng*, Zhen Zhang*, Xinying Ji§

    Oncology Research, Vol.27, No.6, pp. 681-690, 2019, DOI:10.3727/096504018X15424939990246

    Abstract Plasmacytoma variability translocation 1 (PVT1), an oncogene, has been reported to be highly expressed in many tumors, including human glioma, gastric cancer, and non-small cell lung cancer. Functionally, it could also regulate the development of tumor cells. However, its specific roles and pathogenesis in human gliomas are still not clear. This study investigated the function and mechanism of PVT1 knockdown in the proliferation and malignant transformation of human gliomas. We first examined the expression levels of PVT1 and miR- 424 in human glioma tissues and cell lines. We also used gene manipulation techniques to explore the effects of PVT1 knockdown… More >

  • Open Access

    ARTICLE

    NLRP3 Promotes Glioma Cell Proliferation and Invasion via the Interleukin-1b/NF-kB p65 Signals

    Liping Xue*1, Bin Lu†1, Bibo Gao, Yangyang Shi, Jingqi Xu, Rui Yang, Bo Xu, Peng Ding

    Oncology Research, Vol.27, No.5, pp. 557-564, 2019, DOI:10.3727/096504018X15264647024196

    Abstract Because of the characteristics of high invasiveness, relapse, and poor prognosis, the management of malignant gliomas has always been a great challenge. Nod-like receptor (NLR) family pyrin domain containing 3 (NLRP3) is a crucial component of the NLRP3 inflammasome, a multiprotein complex that can trigger caspase 1/interleukin-1 (IL-1)-mediated inflammatory response once activated and participates in the pathogeny of diverse inflammatory diseases as well as cancers. We examined the function of NLRP3 in the development of glioma. Glioma cells were treated with NLRP3 interference or overexpression vectors, recombinant IL-1 , IL-1 antibody, and NF- B inhibitor. Cell proliferation and invasion were… More >

  • Open Access

    ARTICLE

    Bufalin Induces Apoptosis and Improves the Sensitivity of Human Glioma Stem-Like Cells to Temozolamide

    Jia Liu*, Ying Zhang, Shulan Sun, Guirong Zhang, Ke Jiang,§ Peixin Sun*, Ye Zhang*, Bing Yao*, Rui Sui*, Yi Chen*, Xu Guo*, Tao Tang*, Ji Shi*, Haiyang Liang*, Haozhe Piao*

    Oncology Research, Vol.27, No.4, pp. 475-486, 2019, DOI:10.3727/096504018X15270916676926

    Abstract Glioma is the most common malignant tumor of the central nervous system, and it is characterized by high relapse and fatality rates and poor prognosis. Bufalin is one of the main ingredients of Chan-su, a traditional Chinese medicine (TCM) extracted from toad venom. Previous studies revealed that bufalin exerted inhibitory effects on a variety of tumor cells. To demonstrate the inhibitory effect of bufalin on glioma cells and glioma stem-like cells (GSCs) and discuss the underlying mechanism, the proliferation of glioma cells was detected by MTT and colony formation assays following treatment with bufalin. In addition, we investigated whether bufalin… More >

  • Open Access

    ARTICLE

    Overexpression of LACTB, a Mitochondrial Protein That Inhibits Proliferation and Invasion in Glioma Cells

    Hai-Tao Li, Dao-Yong Dong, Qiang Liu, Yi-Qin Xu, Langbo Chen

    Oncology Research, Vol.27, No.4, pp. 423-429, 2019, DOI:10.3727/096504017X15030178624579

    Abstract LACTB, a mitochondrial protein, was ubiquitously expressed in different mammalian tissues, such as liver, heart, and skeletal muscle. It has been shown that LACTB is downexpressed in breast cancers, and it suppresses the proliferation and promotes the apoptosis of breast cancers. However, its role in the progression and prognosis of glioma remains unknown. In this study, we analyzed the clinicopathological features and outcomes of LACTB expression in 98 glioma patients and investigated the effects of LACTB overexpression on the proliferation, invasion, and angiogenesis of glioma cells in vitro. We observed a significant decrease in LACTB expression in glioma, and downexpression… More >

  • Open Access

    ERRATUM

    Knockdown of Long Noncoding RNA CCAT2 Inhibits Cellular Proliferation, Invasion, and Epithelial–Mesenchymal Transition in Glioma Cells

    Jing Zeng*1, Tianping Du†1, Yafeng Song, Yan Gao, Fuyan Li, Ruimin Wu, Yijia Chen, Wei Li, Hong Zhou, Yi Yang, Zhijun Pei

    Oncology Research, Vol.28, No.5, pp. 551-552, 2020, DOI:10.3727/096504020X16032056440085

    Abstract Long noncoding RNA (lncRNA) colon cancer-associated transcript 2 (CCAT2) has been demonstrated to play an important role in diverse tumorigenesis. However, the biological function of lncRNAs in glioma is still unknown. In this study, we found that lncRNA CCAT2 was overexpressed in glioma tissues and cell lines and associated with tumor grade and size. Furthermore, patients with high levels of lncRNA CCAT2 had poorer survival than those with lower levels of lncRNA CCAT2. Knocking down lncRNA CCAT2 expression significantly suppressed the glioma cell growth, migration, and invasion, as well as induced early apoptosis of glioma cells in vitro. Moreover, lncRNA… More >

  • Open Access

    ERRATUM

    Long Noncoding RNA UCA1 Targets miR-122 to Promote Proliferation, Migration, and Invasion of Glioma Cells

    Yang Sun*1, Jun-Gong Jin*1, Wei-Yang Mi, Hao-Wu*, Shi-Rong Zhang, Qiang Meng*, Shi-Tao Zhang

    Oncology Research, Vol.28, No.6, pp. 683-684, 2020, DOI:10.3727/096504021X16137463165433

    Abstract Glioma is the most common and lethal malignant intracranial tumor. Long noncoding RNAs (lncRNAs) have been identified as pivotal regulators in the tumorigenesis of glioma. However, the role of lncRNA urothelial carcinoma-associated 1 (UCA1) in glioma genesis is still unknown. The purpose of this study was to investigate the underlying function of UCA1 on glioma genesis. The results demonstrated that UCA1 was upregulated in glioma tissue and indicated a poor prognosis. UCA1 knockdown induced by si-UCA1 significantly suppressed the proliferative, migrative, and invasive activities of glioma cell lines (U87 and U251). Bioinformatics analysis and luciferase reporter assay verified the complementary… More >

  • Open Access

    ERRATUM

    Inhibition of Beclin-1-Mediated Autophagy by MicroRNA-17-5p Enhanced the Radiosensitivity of Glioma Cells

    Weichen Hou*, Lei Song, Yang Zhao*, Qun Liu*, Shuyan Zhang

    Oncology Research, Vol.28, No.7-8, pp. 815-818, 2020, DOI:10.3727/096504021X16240202939988

    Abstract The role of miRNAs in the radiosensitivity of glioma cells and the underlying mechanism is still far from clear. In the present study, we detected six downregulated and seven upregulated miRNAs in the serum after radiotherapy compared with paired serum samples before radiotherapy via miRNA panel PCR. Among these, miR-17-5p was highly reduced (fold change = −4.21). Further, we validated the levels of miR-17-5p in all serum samples with qRT-PCR. In addition, statistical analysis suggested that a reduced miR-17-5P level was positively associated with advanced clinical stage of glioma, incidence of relapse, and tumor differentiation. Moreover, we provided evidence that… More >

  • Open Access

    ARTICLE

    Brain Tumor Segmentation through Level Based Learning Model

    K. Dinesh Babu1,*, C. Senthil Singh2

    Computer Systems Science and Engineering, Vol.44, No.1, pp. 709-720, 2023, DOI:10.32604/csse.2023.024295

    Abstract Brain tumors are potentially fatal presence of cancer cells over a human brain, and they need to be segmented for accurate and reliable planning of diagnosis. Segmentation process must be carried out in different regions based on which the stages of cancer can be accurately derived. Glioma patients exhibit a different level of challenge in terms of cancer or tumors detection as the Magnetic Resonance Imaging (MRI) images possess varying sizes, shapes, positions, and modalities. The scanner used for sensing the location of tumors cells will be subjected to additional protocols and measures for accuracy, in turn, increasing the time… More >

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