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Search Results (91)
  • Open Access

    ARTICLE

    Overexpression of Protease Serine 8 Inhibits Glioma Cell Proliferation, Migration, and Invasion via Suppressing the Akt/mTOR Signaling Pathway

    Hu-yin Yang, Da-zhao Fang, Lian-shu Ding, Xiao-bo Hui, Dai Liu

    Oncology Research, Vol.25, No.6, pp. 923-930, 2017, DOI:10.3727/096504016X14798241682647

    Abstract Protease serine 8 (PRSS8), a serine peptidase, has a widespread expression in normal epidermal cells. Recently, many researchers demonstrated downregulation of PRSS8 in cancer tissues as well as its tumor suppressor role in cancer development. However, the biological functions of PRSS8 in glioma remain unclear. In the current study, we demonstrated a decreased expression of PRSS8 in glioma tissues and cell lines. PRSS8 upregulation inhibited glioma cell proliferation, migration, and invasion. In addition, xenograft experiments showed that PRSS8 overexpression suppressed glioma cell growth in vivo. We also found that upregulated PRSS8 reduced the protein expression More >

  • Open Access

    ARTICLE

    miR-326 Inhibits Gastric Cancer Cell Growth Through Downregulating NOB1

    Sheqing Ji, Bin Zhang, Ye Kong, Fei Ma, Yawei Hua

    Oncology Research, Vol.25, No.6, pp. 853-861, 2017, DOI:10.3727/096504016X14759582767486

    Abstract MicroRNAs (miRNAs) play a crucial role in the development and progression of human cancers, including gastric cancer (GC). The discovery of miRNAs may provide a new and powerful tool for studying the mechanism, diagnosis, and treatment of GC. In this study, we aimed to investigate the role of miR-326 in the development and progression of GC. Quantitative PCR (qPCR) was used to measure the expression level of miR-326 in GC tissues and cell lines. We found that miR-326 was significantly downregulated during GC. In addition, overexpression of miR-326 inhibited GC cell proliferation. Fluorescence-activated cell sorting More >

  • Open Access

    ARTICLE

    Tumor Protein D52 (TPD52) Inhibits Growth and Metastasis in Renal Cell Carcinoma Cells Through the PI3K/Akt Signaling Pathway

    Zhenhua Zhao1, Hui Liu1, Junqing Hou, Tieqiang Li, Xinyi Du, Xiaolei Zhao, Wenchao Xu, Weibo Xu, Junkai Chang

    Oncology Research, Vol.25, No.5, pp. 773-779, 2017, DOI:10.3727/096504016X14774889687280

    Abstract Tumor protein D52 (TPD52) is a member of the TPD52-like protein family and plays different roles in various types of malignancies. However, its role in renal cell carcinoma (RCC) is still unclear. In this study, we investigated the role of TPD52 in RCC. The mechanism of TPD52 in RCC was also investigated. Our data demonstrated that the expression levels of TPD52 in both mRNA and protein were significantly decreased in RCC cells. Overexpression of TPD52 inhibited proliferation, migration, and invasion with decreased epithelial–mesenchymal transition (EMT) phenotype in RCC cells, as well as attenuated tumor growth More >

  • Open Access

    ARTICLE

    MicroRNA-221-3p Plays an Oncogenic Role in Gastric Carcinoma by Inhibiting PTEN Expression

    Jianping Shi*1, Yi Zhang†1, Nuyun Jin*, Yuqin Li*, Shengtian Wu*, Leiming Xu

    Oncology Research, Vol.25, No.4, pp. 523-536, 2017, DOI:10.3727/096504016X14756282819385

    Abstract Gastric carcinoma is one of the most common malignancies in men, and microRNA plays a critical role in regulating the signaling networks of gastric carcinoma tumorigenesis and metastasis. We first report the functional characteristics of miR-221-3p in gastric carcinoma. Quantification in gastric carcinoma cell lines and tumor samples reveals significantly increasing miR-221-3p expression. Moreover, a high level of miR-221-3p is correlated with a poor prognosis for gastric carcinoma patients. Ectopic miR-221-3p expression significantly promotes gastric carcinoma cell proliferation, invasion, and sphere formation, while silencing miR- 221-3p significantly inhibits these abilities in gastric carcinoma cells. Tests More >

  • Open Access

    ARTICLE

    Knockdown of Latent Transforming Growth Factor-β (TGF-β)-Binding Protein 2 (LTBP2) Inhibits Invasion and Tumorigenesis in Thyroid Carcinoma Cells

    Fuqiang Wan*, Li Peng*, ChaoYu Zhu, XinFa Zhang, FangWen Chen*, Tao Liu§

    Oncology Research, Vol.25, No.4, pp. 503-510, 2017, DOI:10.3727/096504016X14755368915591

    Abstract Latent transforming growth factor-b (TGF-b)-binding protein 2 (LTBP2) is one of four proteins in the LTBP family of proteins (LTBP1–4) and was shown to play a vital role in tumorigenesis. However, little is known regarding the functional role of LTBP2 in thyroid carcinoma. Therefore, the current study aimed to evaluate the effect of LTBP2 expression on the proliferation, invasion, and tumorigenesis in thyroid carcinoma cells and to explore the molecular mechanism of LTBP2 in tumor progression. Our results showed that the expression of LTBP2 is upregulated in human thyroid carcinoma and cell lines. Knockdown of More >

  • Open Access

    ARTICLE

    Knockdown of DDX46 Inhibits the Invasion and Tumorigenesis in Osteosarcoma Cells

    Feng Jiang1, Dengfeng Zhang1, Guojun Li, Xiao Wang

    Oncology Research, Vol.25, No.3, pp. 417-425, 2017, DOI:10.3727/096504016X14747253292210

    Abstract DDX46, a member of the DEAD-box (DDX) helicase family, is involved in the development of several tumors. However, the exact role of DDX46 in osteosarcoma and the underlying mechanisms in tumorigenesis remain poorly understood. Thus, in the present study, we explored the role of DDX46 in osteosarcoma and the underlying mechanisms. Our results demonstrated that the expression levels of DDX46 in both mRNA and protein were greatly elevated in human osteosarcoma tissues and cell lines. Knockdown of DDX46 obviously inhibited osteosarcoma cell proliferation and tumor growth in vivo. In addition, knockdown of DDX46 also significantly More >

  • Open Access

    ARTICLE

    Knockdown of Serine–Arginine Protein Kinase 1 Inhibits the Growth and Migration in Renal Cell Carcinoma Cells

    Xingtao Han*†, Jinjian Yang*, Zhankui Jia*, Pengtao Wei, Han Zhang, Wenwei Lv, Jiantao Sun, Qingxiang Huo

    Oncology Research, Vol.25, No.3, pp. 389-395, 2017, DOI:10.3727/096504016X14743324568129

    Abstract The pre-mRNA splicing regulator serine–arginine protein kinase 1 (SRPK1), a member of the SR kinase family, plays an essential role in cancer development and various pathophysiological processes. However, its expression pattern and functions in renal cell carcinoma (RCC) remain unknown. Therefore, the aim of this study was to assess the role of SRPK1 in RCC. Our data showed that SRPK1 was significantly upregulated in human RCC tissues and cell lines. SRPK1 interference significantly inhibited the proliferation of RCC cells and inhibited tumor growth in vivo. In addition, SRPK1 interference also suppressed migration and invasion in More >

  • Open Access

    ARTICLE

    MicroRNA-204 Inhibits the Growth and Motility of Colorectal Cancer Cells by Downregulation of CXCL8

    Feng Shuai*, Bo Wang, Shuxiao Dong

    Oncology Research, Vol.26, No.8, pp. 1295-1305, 2018, DOI:10.3727/096504018X15172747209020

    Abstract Among all of the miRNAs, miR-204 has gained considerable attention in the field of cancer research. This study aimed to reveal the detailed functions and the underlying mechanism of miR-204 in colorectal cancer (CRC) cells. The expressions of miR-204 in CRC tumor tissues and cell lines were monitored. Expressions of miR-204 and CXCL8 in Caco-2 and HT-29 cells were altered by transfection, and then cell viability, apoptosis, migration, invasion, EMT-related protein expression, and PI3K/AKT/mTOR pathway protein expression were assessed. We found that miR-204 was expressed at low levels in CRC tumor tissues and cell lines… More >

  • Open Access

    ARTICLE

    Long Noncoding RNA FGFR3-AS1 Promotes Hepatocellular Carcinoma Carcinogenesis via Modulating the PI3K/AKT Pathway

    Juhua Zhuang*1, Saifei He*1, Guoyu Wang*, Guangdong Wang*†, Jing Ni*, Suiliang Zhang, Ying Ye*, Wei Xia*

    Oncology Research, Vol.26, No.8, pp. 1257-1265, 2018, DOI:10.3727/096504018X15172756878992

    Abstract Hepatocellular carcinoma (HCC) as one of the most refractory cancers leads to high mortality worldwide. Long noncoding RNAs have been widely acknowledged as important biomarkers and therapeutic targets in HCC. In this study, we investigated the effects of long noncoding RNA FGFR3-AS1 on tumor growth and metastasis in HCC. First, we found that the expression of FGFR3-AS1 was upregulated about threefold in HCC samples and cell lines. We knocked down FGFR3-AS1 in Huh7 and Hep3B cells and found that FGFR3-AS1 knockdown significantly inhibited cell proliferation but induced apoptosis. Moreover, FGFR3-AS1 knockdown led to more HCC More >

  • Open Access

    ARTICLE

    miR-135a Confers Resistance to Gefitinib in Non-Small Cell Lung Cancer Cells by Upregulation of RAC1

    Tingting Zhang*1, Ning Wang†1

    Oncology Research, Vol.26, No.8, pp. 1191-1200, 2018, DOI:10.3727/096504018X15166204902353

    Abstract The EGFR tyrosine kinase inhibitor gefitinib is used in therapy for non-small cell lung cancer (NSCLC). However, the therapeutic efficacy of gefitinib is known to be impeded by mutations of EGFR. The aim of the present study was to reveal the role of miR-135a in gefitinib resistance of NSCLC cells. Human NSCLC cell lines, NCI-H1650 and NCI-H1975, were transfected with miR-135a mimic/inhibitor or miR-135a inhibitor plus pEX-RAC1 (a RAC1-expressing vector). The effects of miR-135a and RAC1 expression on cell viability, apoptosis, migration, and invasion were then detected. The transfected cells were exposed to 0–20 µM… More >

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