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  • Open Access

    ARTICLE

    Synthetic Process of Bio-Based Phenol Formaldehyde Adhesive Derived from Demethylated Wheat Straw Alkali Lignin and Its Curing Behavior

    Yan Song1,2, Zhixin Wang3, Xin Zhang4, Rong Zhang1, Jinchun Li1,2,*

    Journal of Renewable Materials, Vol.9, No.5, pp. 943-957, 2021, DOI:10.32604/jrm.2021.014131 - 20 February 2021

    Abstract Lignin is a natural biopolymer with a complex three-dimensional network, commercially obtained from waste liquid of paper pulp and bioethanol production, and could be a candidate for preparation of environment-friendly bio-based polyphenol material. In the present work, the demethylated wheat straw alkali lignin (D-Lig), prepared by demethylation of wheat straw alkali lignin (Lig) using an in-situ generated Lewis acid, was used to synthesize bio-based phenol formaldehyde resin adhesive (D-LPF) applied in plywood. Effects of synthetic process’s factors, including lignin substitution for phenol, NaOH concentration and molar ratio of formaldehyde to phenol, on the bonding strength and… More >

  • Open Access

    ARTICLE

    Synergistic Efficacy of the Demethylation Agent Decitabine in Combination With the Protease Inhibitor Bortezomib for Treating Multiple Myeloma Through the Wnt/b-Catenin Pathway

    Yulong Jin*, Li Xu*, Xiaodong Wu, Juan Feng*, Mimi Shu*, Hongtao Gu*, Guangxun Gao*, Jinyi Zhang, Baoxia Dong*, Xiequn Chen*

    Oncology Research, Vol.27, No.6, pp. 729-737, 2019, DOI:10.3727/096504018X15443011011637

    Abstract Multiple myeloma (MM) is a hematopoietic malignancy characterized by the clonal proliferation of antibodysecreting plasma cells. Bortezomib (BZM), the first FDA-approved proteasome inhibitor, has significant antimyeloma activity and prolongs the median survival of MM patients. However, MM remains incurable predominantly due to acquired drug resistance and disease relapse. -Catenin, a key effector protein in the canonical Wnt signaling pathway, has been implicated in regulating myeloma cell sensitivity to BZM. Decitabine (DAC) is an epigenetic modulating agent that induces tumor suppressor gene reexpression based on its gene-specific DNA hypomethylation. DAC has been implicated in modulating Wnt/… More >

  • Open Access

    ARTICLE

    Histone Demethylase JARID1B Is Overexpressed in Osteosarcoma and Upregulates Cyclin D1 Expression via Demethylation of H3K27me3

    Wei Wang, Ke Zheng, Yi Pei, XiaoJing Zhang

    Oncology Research, Vol.26, No.3, pp. 373-384, 2018, DOI:10.3727/096504017X14939809845080

    Abstract JARID1B has been proven to be upregulated in many human malignancies and is correlated with tumor progression. However, its expression and clinical significance in osteosarcoma are still unclear. Thus, the aim of this study was to explore the effects of JARID1B in osteosarcoma tumorigenesis and development. In this study, we found that the expression levels of JARID1B in osteosarcoma tissues were significantly higher than those in corresponding noncancerous bone tissues. In addition, JARID1B upregulation occurred more frequently in osteosarcoma specimens from patients with a poor prognosis. After JARID1B transfection in osteosarcoma cells, cell proliferation was More >

  • Open Access

    ARTICLE

    Demethylation of Repressor Element-1 Silencing Transcription (REST) Suppresses the Malignant Phenotype of Breast Cancer via MMP9

    Ying Liu*†, Hui Lv, Xiaoying Wu, Jun Zhou, Ying Shi#, Jifang Wen*†

    Oncology Research, Vol.25, No.3, pp. 445-454, 2017, DOI:10.3727/096504016X14747368729786

    Abstract Breast cancer is the leading cause of cancer deaths in females all over the world, mainly resulting from metastasis. Previous studies have revealed that repressor element-1 (RE-1) silencing transcription (REST) acted as a tumor suppressor in breast cancer. However, the mechanism by which REST is regulated remains unknown, and its role in the metastasis in breast cancer cells remains unclear. In the present study, we showed that the expression of REST was lower in breast cancer samples than that of adjacent samples by immunohistochemical analysis, which may be due to hypermethylation of the REST promoter.… More >

  • Open Access

    ARTICLE

    Inhibition of Migration and Invasion by Tet-1 Overexpression in Human Lung Carcinoma H460 Cells

    Si Jun Park*1, Bo Ram Lee*1, Hyeng-Soo Kim*, Young Rae Ji*, Yong Hun Sung*, Kwang ShikChoi*, Hum Dai Park, Sung-Hyun Kim*, Myoung Ok Kim, Zae Young Ryoo*

    Oncology Research, Vol.23, No.3, pp. 89-98, 2015, DOI:10.3727/096504015X14496932933539

    Abstract In the present study, we found that lung cancer cell line (H460 cells) expressing Tet1 showed higher levels of adhesion, and Tet1 inhibited H460 cell proliferation. In addition, these cells showed a significantly reduced ability of collagen degradation and Smad2/3 phosphorylation compared to controls. Furthermore, vimentin was found to be highly expressed in larger metastatic cancer area. Tet1 overexpression was reduced in the epithelial marker E-cadherin. Moreover, Tet1 repressed cancer cell metastasis in nude mice. Collectively, these findings suggest that Tet1 expression plays a critical role in metastasis of lung cancer cells by suppression of More >

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