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  • Open Access


    MicroRNA-98 Plays a Suppressive Role in Non-Small Cell Lung Cancer Through Inhibition of SALL4 Protein Expression

    Wenliang Liu*, Peng Xiao, Han Wu*, Li Wang*, Demiao Kong*, Fenglei Yu*

    Oncology Research, Vol.25, No.6, pp. 975-988, 2017, DOI:10.3727/096504016X14791726591124

    Abstract MicroRNAs (miRs) have been demonstrated to be significantly associated with the development and progression of non-small cell lung cancer (NSCLC). However, the underlying mechanism of miR-98 in mediating the malignant phenotypes of NSCLC cells remains obscure. In this study, we found that miR-98 was significantly downregulated in NSCLC tissues compared to nontumor lung tissues. Downregulation of miR-98 was significantly associated with poor differentiation and advanced clinical stage. Restoration of miR-98 expression significantly decreased the proliferation, migration, and invasion of NSCLC A549 and H1229 cells. SALL4 was identified as a target gene of miR-98, and the… More >

  • Open Access


    Overexpression of Forkhead Box L1 (FOXL1) Inhibits the Proliferation and Invasion of Breast Cancer Cells

    Jiateng Zhong*†, Haijun Wang*, Jian Yu, Jinghang Zhang, Hui Wang†§

    Oncology Research, Vol.25, No.6, pp. 959-965, 2017, DOI:10.3727/096504016X14803482769179

    Abstract Forkhead box L1 (FOXL1) is a member of the Forkhead box (FOX) superfamily and was reported to be dysregulated in various types of cancers. However, its expression pattern and underlying cellular function in breast cancer remain largely unexplored. Thus, the aim of this study was to detect FOXL1 expression in breast cancer and to analyze its role in the progression of breast cancer. Our results demonstrated that FOXL1 expression at both the mRNA and protein levels was downregulated in breast cancer tissues and cell lines. Ectopic FOXL1 suppressed breast cancer cell proliferation, migration, and invasion More >

  • Open Access


    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


    Overexpression of Human Papillomavirus Type 16 Oncoproteins Enhances Epithelial–Mesenchymal Transition via STAT3 Signaling Pathway in Non-Small Cell Lung Cancer Cells

    Wenzhang Zhang*1, Xin Wu†1, Liang Hu*, Yuefan Ma*, Zihan Xiu*, Bingyu Huang*, Yun Feng*, Xudong Tang*†‡

    Oncology Research, Vol.25, No.5, pp. 843-852, 2017, DOI:10.3727/096504016X14813880882288

    Abstract The human papillomavirus (HPV) infection may be associated with the development and progression of nonsmall cell lung cancer (NSCLC). However, the role of HPV-16 oncoproteins in the development and progression of NSCLC is not completely clear. Epithelial–mesenchymal transition (EMT), a crucial step for invasion and metastasis, plays a key role in the development and progression of NSCLC. Here we explored the effect of HPV-16 oncoproteins on EMT and the underlying mechanisms. NSCLC cell lines, A549 and NCI-H460, were transiently transfected with the EGFP-N1-HPV-16 E6 or E7 plasmid. Real-time PCR and Western blot analysis were performed… More >

  • Open Access


    Overexpression of PER3 Inhibits Self-Renewal Capability and Chemoresistance of Colorectal Cancer Stem-Like Cells via Inhibition of Notch and β-Catenin Signaling

    Feng Zhang*, Hong Sun, Sai Zhang, Xin Yang, Guogang Zhang*, Tao Su

    Oncology Research, Vol.25, No.5, pp. 709-719, 2017, DOI:10.3727/096504016X14772331883976

    Abstract PER3, a circadian clock gene, plays an important role in colorectal cancer, but its action and underlying mechanism in colorectal cancer stem-like cells (CSCs) remain unclear. In this study, the colorectal CSCs were enriched in colorectal HCT-116 sphere-forming cells, expressing lower levels of stem cell markers CD133, CD44, LGR5, and SOX2 compared with HCT-116 cells. A drug-resistant strain from HCT-116 was established. Western blot and qRT-PCR analysis showed that PER3 was downregulated in colorectal CSCs and drug-resistant HCT-116. Overexpression of PER3 could strengthen 5-FU-induced inhibitory effects on colorectal CSCs, but knockdown of PER3 decreased its… More >

  • Open Access


    Truncated Bid Overexpression Induced by Recombinant Adenovirus Cre/LoxP System Suppresses the Tumorigenic Potential of CD133+ Ovarian Cancer Stem Cells

    Qifang Long*, Weipei Zhu*, Jundong Zhou, Jinchang Wu, Weixian Lu, Cui Zheng, Dongmei Zhou, Ling Yu, Ru Yang

    Oncology Research, Vol.25, No.4, pp. 595-603, 2017, DOI:10.3727/096504016X14765492198706

    Abstract Ovarian cancer is one of the most lethal malignant gynecologic tumors with a high relapse rate worldwide. Cancer stem cells (CSCs) have been identified in ovarian cancer and other malignant tumors as a small population of cells that are capable of self-renewal and multidifferentiation. CD133+ ovarian CSCs have been reported to be more tumorigenic and more resistant to chemotherapeutic treatment. Thus, CD133 has emerged as one of the most promising therapeutic markers for ovarian cancer treatment. In the current study, we constructed a recombinant adenovirus Cre/loxP regulation system to selectively introduce truncated Bid (tBid) expression specifically… More >

  • Open Access


    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


    Overexpression of Interferon Regulatory Factor 7 (IRF7) Reduces Bone Metastasis of Prostate Cancer Cells in Mice

    Yang Zhao, Wenxia Chen, Weiliang Zhu, Hui Meng, Jie Chen, Jian Zhang

    Oncology Research, Vol.25, No.4, pp. 511-522, 2017, DOI:10.3727/096504016X14756226781802

    Abstract The purpose of this study was to identify the role of interferon regulatory factor 7 (IRF7) in the bone metastasis of prostate cancer. Herein we demonstrated the lower expression of IRF7 in bone metastases of prostate cancer. Overexpression of IRF7 in prostate cancer cells had a marked effect on inhibiting bone metastases but not on tumor growth in xenograft nude mice. While in vitro, upregulation of IRF7 had little effect on the malignant phenotype of prostate cancer cells including proliferation, apoptosis, migration, and invasion. However, prostate cancer cells overexpressing IRF7 significantly enhanced the activity of More >

  • Open Access


    High-Level Expression of RIPK4 and EZH2 Contributes to Lymph Node Metastasis and Predicts Favorable Prognosis in Patients With Cervical Cancer

    Susan Azizmohammadi*, Sima Azizmohammadi*, Aghdas Safari, Maria Kaghazian, Mina Sadrkhanlo§, Vahid Behnod, Mehri Seifoleslami#

    Oncology Research, Vol.25, No.4, pp. 495-501, 2017, DOI:10.3727/096504016X14749735594687

    Abstract The investigation of specific genes will establish more useful biomarkers for accurate detection and management of gynecological cancers, especially patients with cervical cancer (CCP). The aim of this study was to evaluate the expression level of RIPK4 and EZH2 messenger RNA (RIPK4 and EZH2 mRNA) in CCP. Expression of RIPK4 and EZH2 in the tissues was determined by immunohistochemistry and qRT-PCR methods. Correlations of RIPK4 and EZH2 mRNA with clinical and pathological parameters were analyzed using the Fisher’s exact test. The mRNA level of RIPK4 was significantly upregulated in tumor tissues compared with matched adjacent… More >

  • Open Access


    High TRAF6 Expression Is Associated With Esophageal Carcinoma Recurrence and Prompts Cancer Cell Invasion

    Xinyang Liu*1, Zhichao Wang†1, Guoliang Zhang‡1, Qikun Zhu, Hui Zeng, Tao Wang, Feng Gao, Zhan Qi, Jinwen Zhang§, Rui Wang

    Oncology Research, Vol.25, No.4, pp. 485-493, 2017, DOI:10.3727/096504016X14749340314441

    Abstract Esophageal cancer is one of the most common types of cancer, and it has a poor prognosis. The molecular mechanisms of esophageal cancer progression remain largely unknown. In this study, we aimed to investigate the clinical significance and biological function of tumor necrosis factor receptor-associated factor 6 (TRAF6) in esophageal cancer. Expression of TRAF6 in esophageal cancer was examined, and its correlation with clinicopathological factors and patient prognosis was analyzed. A series of functional and mechanism assays were performed to further investigate the function and underlying mechanisms in esophageal cancer. Expression of TRAF6 was highly… More >

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