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  • Open Access

    ARTICLE

    lncRNA C2dat1 Promotes Cell Proliferation, Migration, and Invasion by Targeting miR-34a-5p in Osteosarcoma Cells

    Daofu Jia*, Yanping Niu, Dongling Li, Zhaorui Liu§

    Oncology Research, Vol.26, No.5, pp. 753-764, 2018, DOI:10.3727/096504017X15024946480113

    Abstract Osteosarcoma is a highly aggressive malignant bone tumor with poor prognosis. Evidence has suggested that lncRNAs are deregulated in multiple cancers. In this study, we investigated the role of the lncRNA C2dat1 on the biological functions of osteosarcoma cells. The expressions of C2dat1, miR-34a-5p, and Sirt1 in human osteosarcoma cells were altered by transfection with their specific vectors/shRNA or mimic/inhibitor. Cell viability, migration, invasion, and apoptosis were assessed posttransfection. The mRNA and protein levels of C2dat1, miR-34a-5p, and Sirt1 were detected by qRT-PCR and Western blot. The results showed that C2dat1 suppression reduced cell viability, More >

  • Open Access

    ARTICLE

    Long Noncoding RNA (lncRNA) HOTAIR Affects Tumorigenesis and Metastasis of Non-Small Cell Lung Cancer by Upregulating miR-613

    Caiyu Jiang, Yan Yang, Yang Yang, Lu Guo, Jiang Huang, Xingren Liu, Chi Wu, Jun Zou

    Oncology Research, Vol.26, No.5, pp. 725-734, 2018, DOI:10.3727/096504017X15119467381615

    Abstract Non-small cell lung cancer (NSCLC) is one of the most deadly cancers with poor prognosis. Recent findings suggested that the lncRNA HOTAIR played an important role in tumorigenesis and metastasis. In the present study, HOTAIR was highly expressed in NSCLC tumor tissues and cell lines (H1299, H23, H292, and A549). Downregulation of HOTAIR suppressed cell proliferation and invasion, while it promoted apoptosis of NSCLC cells. The targeting relationship between HOTAIR and miR-613 was first revealed by bioinformatics prediction. miR-613 was found to be lowly expressed in NSCLC tumor tissues and cell lines. Knockdown of HOTAIR… More >

  • Open Access

    ARTICLE

    Long Noncoding RNA PVT1 Promotes Melanoma Progression via Endogenous Sponging miR-26b

    Bao-Juan Wang*, Hong-Wei Ding, Guo-An Ma

    Oncology Research, Vol.26, No.5, pp. 675-681, 2018, DOI:10.3727/096504017X14920318811730

    Abstract Melanoma is an extremely aggressive malignant skin tumor with a high mortality. Various long noncoding RNAs (lncRNAs) have been reported to be associated with the oncogenesis of melanoma. The purposes of this study were to investigate the potential role of lncRNA PVT1 in melanoma progression and to explore its possible mechanisms. A total of 35 patients who were diagnosed with malignant melanoma were enrolled in this study. Expression of PVT1 was significantly upregulated in melanoma tissue and was associated with a poor prognosis. Loss-of-function experiments showed that PVT1 knockdown markedly suppressed the proliferation activity, induced More >

  • Open Access

    ARTICLE

    Knockdown of Long Noncoding RNA (lncRNA) Metastasis-Associated Lung Adenocarcinoma Transcript 1 (MALAT1) Inhibits Proliferation, Migration, and Invasion and Promotes Apoptosis by Targeting miR-124 in Retinoblastoma

    Shujun Liu*1, Guigang Yan*1, Junfu Zhang, Lianzhi Yu

    Oncology Research, Vol.26, No.4, pp. 581-591, 2018, DOI:10.3727/096504017X14953948675403

    Abstract Evidence suggests that the long noncoding RNA (lncRNA) metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is upregulated in cancer tissues, and its elevated expression is associated with hyperproliferation. However, the underlying mechanisms regarding the role of MALAT1 in retinoblastoma (RB) remain unclear. This study aimed to explore the functional role of MALAT1 in RB by targeting miR-124. The results showed that the expression of MALAT1 was significantly higher in the Y79 cell line than in the ARPE-19 cell line (p<0.01). Moreover, MALAT1 silence inhibited cell viability, migration, and invasion and promoted apoptosis in Y79 cells (p< 0.05, p<0.01,… More >

  • Open Access

    ARTICLE

    Long Noncoding RNA Urothelial Carcinoma-Associated 1 Promotes the Proliferation and Metastasis of Human Lung Tumor Cells by Regulating MicroRNA-144

    Dagang Li*, Huizong Li, Yuping Yang*, Le Kang*

    Oncology Research, Vol.26, No.4, pp. 537-546, 2018, DOI:10.3727/096504017X15009792179602

    Abstract Long noncoding RNA urothelial carcinoma-associated 1 (lncRNA UCA1) has gained more attention in recent years due to its oncogenic roles in various cancers. MicroRNA-144 (miR-144) participates in the regulation of the growth of many cancer cells. This study investigated the interaction between lncRNA UCA1 and miR-144 in lung cancer cells. The potential downstream protein of miR-144 was also assessed. Our results found that lncRNA UCA1 was highly expressed in human lung cancer A549, H517, H4006, H1299, and H1650 cells compared to normal embryonic lung WI-38 and HEL-1 cells. Knockdown of lncRNA UCA1 significantly inhibited lung More >

  • Open Access

    ARTICLE

    The Long Noncoding RNA HOTAIR Promotes Colorectal Cancer Progression by Sponging miR-197

    Xinyang Lu, Zhiqiang Liu, Xiaofei Ning, Lunhua Huang, Biao Jiang

    Oncology Research, Vol.26, No.3, pp. 473-481, 2018, DOI:10.3727/096504017X15105708598531

    Abstract The long noncoding RNA HOX transcript antisense RNA (HOTAIR) has been found to be overexpressed in many human malignancies and involved in tumor progression and metastasis. Although the downstream target through which HOTAIR modulates tumor metastasis is not well known, evidence suggests that microRNA-197 (miR-197) might be involved in this event. In the present study, the significance of HOTAIR and miR-197 in the progression of colorectal cancer was detected in vitro and in vivo. We found that HOTAIR expression was significantly increased in colorectal cancer cells and tissues. In contrast, the expression of miR-197 was More >

  • Open Access

    ARTICLE

    Decreased Expression of miR-138-5p by lncRNA H19 in Cervical Cancer Promotes Tumor Proliferation

    Lei Ou*, Dazhong Wang, Han Zhang*, Qian Yu*, Fangfang Hua

    Oncology Research, Vol.26, No.3, pp. 401-410, 2018, DOI:10.3727/096504017X15017209042610

    Abstract MicroRNAs (miRNAs) play important roles in the carcinogenesis of cervical cancer. However, the expression and underlying mechanisms of miRNA in cervical cancer progression remain unclear. In the present study, our data showed that the expression of miR-138-5p was significantly downregulated in cervical cancer tissues, and decreased expression of miR-138-5p was correlated with advanced FIGO stage, poor differentiation, lymph node metastasis, and poor overall survival of cervical cancer patients. Function assays showed that overexpression of miR-138-5p reduced cervical cancer cell proliferation, arrested cells in the G0 /G1 phase, and induced cell apoptosis in vitro. Remarkably, SIRT1 was More >

  • Open Access

    ARTICLE

    Long Noncoding RNA ANRIL Promotes Cervical Cancer Development by Acting as a Sponge of miR-186

    Jun-Jun Zhang*, Dan-Dan Wang*, Chen-Xiang Du, Yan Wang

    Oncology Research, Vol.26, No.3, pp. 345-352, 2018, DOI:10.3727/096504017X14953948675449

    Abstract Cervical cancer is a common malignancy of the female reproductive system. Long noncoding RNAs (lncRNAs) have been reported to modulate tumor progression in multiple cancers. The lncRNA antisense noncoding RNA in the INK4 locus (ANRIL) has been identified as an oncogenic molecular target in several tumors; however, the function and underlying mechanism involved in cervical cancer oncogenesis are still unclear. In the present study, RT-PCR showed that ANRIL expression was significantly upregulated in cervical cancer tumors and cell lines. Nevertheless, ANRIL knockdown transfected with interference oligonucleotide inhibited the proliferation activity and invasive ability, and promoted More >

  • Open Access

    ARTICLE

    Long Noncoding RNA LINC01133 Functions as an miR-422a Sponge to Aggravate the Tumorigenesis of Human Osteosarcoma

    Hai-Feng Zeng*, Hai-Yan Qiu, Fa-Bo Feng

    Oncology Research, Vol.26, No.3, pp. 335-343, 2018, DOI:10.3727/096504017X14907375885605

    Abstract Long noncoding RNAs (lncRNAs) have been verified to participate in various types of malignant tumors, including osteosarcoma (OS), which is the most common primary bone tumor with outstanding morbidity. Although an increasing number of lncRNAs have been reported to mediate the occurrence of OS, the potential mechanisms are still unclear. This study intends to uncover the mechanism by which lncRNA LINC01133 functions as an miRNA sponge to mediate OS tumorigenicity. In this study, we found that the expression level of LINC01133 was statistically upregulated in OS tumor tissue and cell lines compared to noncancerous tissues More >

  • Open Access

    ARTICLE

    Knockdown of Long Noncoding RNA LUCAT1 Inhibits Cell Viability and Invasion by Regulating miR-375 in Glioma

    Yan-Sheng Gao*, Xian-Zhi Liu, Yong-Gang Zhang*, Xian-Jin Liu*, Ling-Zhen Li

    Oncology Research, Vol.26, No.2, pp. 307-313, 2018, DOI:10.3727/096504017X15088061795756

    Abstract Recently, long noncoding RNAs (lncRNAs) have emerged as new gene regulators and prognostic markers in several cancers, including glioma. Here we focused on lncRNA LUCAT1 on the progression of glioma. qRT-PCR was used to determine the expression of LUCAT1 and miR-375 in glioma tissues and cells. MTT and Transwell invasion assays were performed to determine the function of LUCAT1 in glioma progression. The bioinformatics tool DIANA was used to predict the targets of LUCAT1. Pearson’s correlation analysis was performed to explore the correlation between LUCAT1 and miR-375. In the present study, we showed that LUCAT1… More >

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