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Search Results (8)
  • Open Access


    Overexpression of miR-509 Increases Apoptosis and Inhibits Invasion via Suppression of Tumor Necrosis Factor-α in Triple-Negative Breast Cancer Hs578T Cells

    Guoqiang Zhang*1, Zengyan Liu†1, Yong Han*, Xiaohong Wang*, Zhenlin Yang*

    Oncology Research, Vol.24, No.4, pp. 233-238, 2016, DOI:10.3727/096504016X14648701447977

    Abstract Triple-negative breast cancer (TNBC) is associated with high recurrence rates of metastasis and death. miR-509 has been reported to be a tumor suppressor in many cancers, but its effect in TNBC has not yet been identified. In this article, we explored the effects of miR-509 on the malignant phenotype of TNBC cells, including proliferation, apoptosis, migration, and invasion. We transiently transfected TNBC cells, Hs578T, with miR-509 mimic. Upon transfection, the expression of miR-509 was upregulated about 50-fold compared with cells transfected with scramble mimic. Overexpression of miR-509 inhibited cell proliferation, induced cell apoptosis, and suppressed More >

  • Open Access


    Overexpression of Long Noncoding RNA PTENP1 Inhibits Cell Proliferation and Migration via Suppression of miR-19b in Breast Cancer Cells

    Xianbiao Shi, Xiaoqiao Tang, Lei Su

    Oncology Research, Vol.26, No.6, pp. 869-878, 2018, DOI:10.3727/096504017X15123838050075

    Abstract This study aimed to investigate the effect of long noncoding RNA PTENP1 in the development of breast cancer (BC). Quantitative real-time PCR was utilized to determine the expression of PTENP1 in tissues and cell lines. pcDNA3.1 and shRNA were used to over- and low-express PTENP1 in BC cell lines, and miR-19b mimic and inhibitor were utilized to over- and low-express miR-19b. Then the abilities of cell survival, apoptosis, migration, and invasion were assessed in BC cells with different expression levels of PTENP1 and miR-19b. The expression of PTENP1 was significantly downregulated in both BC tissues More >

  • Open Access


    Identification of Circular RNA hsa-circ-0006969 as a Novel Biomarker for Breast Cancer

    Libin Wang1,2,3,#, Xiaohan Li1,3,#, Jinhai Tian1,2,3, Jingjing Yu1,2,3, Qi Huang1,2,3, Rong Ma1,2,3, Jia Wang1,2,3, Jia Cao1,2,3, Jinping Li4,*, Xu Zhang1,2,3,*

    Oncologie, Vol.24, No.4, pp. 789-801, 2022, DOI:10.32604/oncologie.2022.026589

    Abstract Background: To investigate the characteristics of circular RNA hsa-circ-0006969 in breast cancer and identify it as a novel biomarker for breast cancer. Methods: Three breast cancer (BC) patient tissues were selected to perform human circRNA microarray analysis. GeneSpring 13.0 (Agilent) software was applied for analyzing the data. Another 116 BC patients were recruited for verification. Hsa-circ-0006969 was found as a potential circRNA for BC diagnostic biomarker. The structure of hsa-circ-0006969 was predicted by circPrimer1.2 software. MiRanda v3.3, RNA hybrid 2.1, and Cytoscape 3.6.0 were used for predicting the networks of circRNA-miRNA. T-test, Curve regression, and ROC… More >

  • Open Access


    Long Noncoding RNA FOXC2-AS1 Predicts Poor Survival in Breast Cancer Patients and Promotes Cell Proliferation

    Haisong Yang*, Tengxiang Chen, Shu Xu, Shiyong Zhang*, Mengmeng Zhang*

    Oncology Research, Vol.27, No.2, pp. 219-226, 2019, DOI:10.3727/096504018X15213126075068

    Abstract Breast cancer (BC) is the most common malignant tumor in women. Recently, long noncoding RNAs (lncRNAs) have been proposed as critical regulators in biological processes, including tumorigenesis. FOXC2-AS1, a single antisense oligonucleotide RNA transcribed from the negative strand of forkhead box protein C2 (FOXC2), has been identified as an oncogene in osteosarcoma. In the present study, we investigated the prognosis value and biological role of FOXC2-AS1 in BC. Our findings revealed that FOXC2-AS1 was significantly increased in BC tissues and cell lines, and Kaplan–Meier survival analysis indicated that a high level of FOXC2-AS1 was associated More >

  • Open Access


    Kaempferol Suppresses Proliferation and Induces Cell Cycle Arrest, Apoptosis, and DNA Damage in Breast Cancer Cells

    Li Zhu*, Lijun Xue

    Oncology Research, Vol.27, No.6, pp. 629-634, 2019, DOI:10.3727/096504018X15228018559434

    Abstract Kaempferol is a flavonoid that has been extensively investigated owing to its antitumor effects. Nevertheless, little is known about its underlying mechanisms of action. We aimed to explore the role of kaempferol in breast cancer (BC), and thus we investigated how kaempferol suppresses the growth of BC cells. The cells were treated with kaempferol, and the effects on multiple cancer-associated pathways were evaluated. The MTS assay was used to study the cell growth inhibition induced by kaempferol. The cell cycle was analyzed by flow cytometry. Western blotting was used to analyze cellular apoptosis and DNA… More >

  • Open Access


    MicroRNA-664 Targets Insulin Receptor Substrate 1 to Suppress Cell Proliferation and Invasion in Breast Cancer

    Liang Wu, Yuefeng Li, Jingye Li, Deliang Ma

    Oncology Research, Vol.27, No.4, pp. 459-467, 2019, DOI:10.3727/096504018X15193500663936

    Abstract A large number of microRNAs (miRNAs) have been previously demonstrated to be dysregulated in breast cancer (BC), and alterations in miRNA expression may affect the initiation and progression of BC. This study showed that miR-664 expression was obviously reduced in BC tissues and cell lines. Resumption of the expression of miR-664 attenuated the proliferation and invasion of BC cells. The molecular mechanisms underlying the inhibitory effects of BC cell proliferation and invasion by miR-664 were also studied. Insulin receptor substrate 1 (IRS1) was identified as a novel and direct target of miR-664. In addition, siRNAmediated More >

  • Open Access


    Pathway Mutations in Breast Cancer Using Whole-Exome Sequencing

    Ya-Sian Chang*†‡§, Chieh-Min Chang†‡, Chien-Yu Lin¶#, Dy-San Chao, Hsi-Yuan Huang, Jan-Gowth Chang*†‡**††

    Oncology Research, Vol.28, No.2, pp. 107-116, 2020, DOI:10.3727/096504019X15698362825407

    Abstract The genomic landscape of breast cancer (BC) is complex. The purpose of this study was to decipher the mutational profiles of Taiwanese patients with BC using next-generation sequencing. We performed whole-exome sequencing on DNA from 24 tumor tissue specimens from BC patients. Sanger sequencing was used to validate the identified variants. Sanger sequencing was also performed on paired adjacent nontumor tissues. After genotype calling and algorithmic annotations, we identified 49 deleterious variants in canonical cancer-related genes in our BC cohort. The most frequently mutated genes were PIK3CA (16.67%), FKBP9 (12.5%), TP53 (12.5%), ATM (8.33%), CHEK2 (8.33%), FOXO3 (8.33%), NTRK1More >

  • Open Access


    miR-325-3p Promotes the Proliferation, Invasion, and EMT of Breast Cancer Cells by Directly Targeting S100A2

    Huiling Wang*, Xin Hu, Feng Yang, Hui Xiao*

    Oncology Research, Vol.28, No.7-8, pp. 731-744, 2020, DOI:10.3727/096504020X16100888208039

    Abstract This study was designed to investigate the precise mechanisms of miR-325-3p/S100A2 axis in breast cancer (BC). In this study, we found that the level of miR-325-3p was dramatically increased in BC tissues and cell lines, and the expression of S100A2 was significantly decreased. Also, the high level of miR-325-3p was closely associated with low expression of S100A2 in BC tissues. Moreover, introduction of miR-325-3p significantly promoted proliferation, invasion, and EMT of BC cells. Bioinformatics analysis predicted that the S100A2 was a potential target gene of miR-325-3p. Luciferase reporter assay demonstrated that miR-325-3p could directly target More >

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