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Cancer Cell International

Yang Zheng, Zhao Wang, Xu Ding, Wei Zhang, Gang Li, Laikui Liu, Heming Wu, Wenyi Gu, Yunong Wu, Xiaomeng Song
Background: Notch1 has been regarded as a fundamental regulator in tissue differentiation and stem cell properties. Recently, Notch1 mutations have been reported intensively both in solid tumors and in hematopoietic malignancies. However, little is known about the biological effect and the clinical implication of these reported mutations. Previously, we discovered several missense mutations in the Notch1 receptor in a Chinese population with oral squamous cell carcinoma (OSCC). Methods: We selected a 'hotspot' mutation in the Abruptex domain (C1133Y)...
2018: Cancer Cell International
Yongbo Yu, Jie Zhang, Yaqiong Jin, Yeran Yang, Jin Shi, Feng Chen, Shujing Han, Ping Chu, Jie Lu, Huanmin Wang, Yongli Guo, Xin Ni
Background: Neuroblastoma (NB) is the most common malignant tumor originating from the extracranial sympathetic nervous system in children. The molecular mechanisms underlying this disease are complex, and not completely understood. Methods: Quantitative real-time PCR (qRT-PCR) was applied to quantify the expression of miR-20a-5p and its target gene ATG7 in clinical NB tissues. The biological function of miR-20a-5p and ATG7 in SH-SY5Y cells was investigated through in vitro studies (Real-Time cell kinetic analyzer, colony formation assay, caspase-Glo 3/7 assay and western blotting)...
2018: Cancer Cell International
Jin Li, Yuan Wang, Cheng-Gong Zhang, Hai-Juan Xiao, Jun-Ming Hou, Jing-Dong He
Objective: This study aims to investigate the effect of long non-coding RNA (lncRNA) Gas5 on proliferation, migration, invasion and apoptosis of colorectal cancer (CRC) HT-29 cell line. Methods: CRC and normal tissues were collected and prepared from a total of 126 CRC patients, and normal intestinal epithelial cell line FHC and CRC cell lines (HCT-8, HT-29, HCT-116 and SW-480) were prepared. Gas5 expression was detected by quantitative reverse transcriptase-polymerase chain reaction...
2018: Cancer Cell International
Zheng Chen, Qiong Liang, Jue Wang, Qun-Xiong Huang, Jian-Ning Chen, Zi-Jin Weng, Chun-Kui Shao, Xin Gao, Jun Pang
Background: Primary malignant lymphoma of the prostate (PMLP) is prone to occur in the elderly, and it has no significant correlation with lactate dehydrogenase (LDH) and prostate specific antigen (PSA). Clinical symptoms and imaging data of PMLP remain unspecific, and its prognosis is poor. A previous result showed that collapsin response mediator protein 4 (CRMP4) promotor methylation can be used as a predictor for lymph node metastases in prostate biopsies. However, the relationship between CRMP4 promotor methylation and PMLP has not been studied...
2018: Cancer Cell International
Eun Jung Sohn
Background: Autophagy is a response to cellular and environmental conditions and facilitates cell survival. Here, we investigated the role of ectopic expression of microRNA (miRNA) 200c-3p in autophagy. Methods: miRNA mimics were used to overexpress miRNAs. Quantitative real-time polymerase chain reaction (RT-qPCR) was performed to analyze miRNA expression. RT-qPCR and western blotting were performed to determine the expression levels of inositol requiring protein-1 (IRE1α), activating transcription factor-6 (ATF6), C/EBP homologous protein (CHOP), and light chain-3 (LC3)...
2018: Cancer Cell International
Shidai Mu, Lisha Ai, Fengjuan Fan, Chunyan Sun, Yu Hu
Background: Recent studies have emphasized the important prognostic role of long noncoding RNAs (lncRNAs) in various types of cancers. Here we conducted a meta-analysis to investigate whether lncRNA HOXA11-AS can be served as a prognostic biomarker in human cancers. Patients/methods: We systematically searched PubMed, Embase, ISI Web of Science, and SCOPUS for relevant studies, to investigate the prognostic significance of HOXA11-AS expression in cancer patients...
2018: Cancer Cell International
Xiao-Zhong Liao, Lan-Ting Tao, Jia-Hui Liu, Yue-Yu Gu, Jun Xie, Yuling Chen, Mei-Gui Lin, Tao-Li Liu, Dong-Mei Wang, Hai-Yan Guo, Sui-Lin Mo
Background: Cisplatin is one of the first-line drugs for urothelial bladder cancer (UBC) treatment. However, its considerable side effects and the emergence of drug resistance are becoming major limitations for its application. This study aimed to investigate whether matrine and cisplatin could present a synergistic anti-tumor effect on UBC cells. Methods: Cell viability assay was used to assess the suppressive effect of matrine and cisplatin on the proliferation of the UBC cells...
2017: Cancer Cell International
Rahil Eftekhari, Rezvan Esmaeili, Reza Mirzaei, Katayoon Bidad, Stacy de Lima, Maryam Ajami, Hedayatollah Shirzad, Jamshid Hadjati, Keivan Majidzadeh-A
Background: Different cells and mediators in the tumor microenvironment play important roles in the progression of breast cancer. The aim of this study was to determine the composition of the microenvironment during tumor progression in order to discover new related biomarkers and potentials for targeted therapy. Methods: In this study, breast cancer biopsies from four different stages, and control breast biopsies were collected. Then, the mRNA expression of several markers related to different CD4+ T cell subsets including regulatory T cells (Treg), T helper (Th) type 1, 2 and 17 were determined...
2017: Cancer Cell International
Xiaoqian Ji, Siyu Chen, Yanwu Guo, Wende Li, Xiaolong Qi, Han Yang, Sa Xiao, Guang Fang, Jinfang Hu, Chuangyu Wen, Huanliang Liu, Zhen Han, Guangxu Deng, Qingbin Yang, Xiangling Yang, Yuting Xu, Zhihong Peng, Fengping Li, Nvlue Cai, Guoxin Li, Ren Huang
Background: Patient-derived xenografts (PDX) have a biologically stable in tumor architecture, drug responsiveness, mutational status and global gene-expression patterns. Numerous PDX models have been established to date, however their thorough characterization regarding the tumor formation and rates of tumor growth in the established models remains a challenging task. Our study aimed to provide more detailed information for establishing the PDX models successfully and effectively. Methods: We transplanted four different types of solid tumors from 108 Chinese patients, including 21 glioblastoma (GBM), 11 lung cancers (LC), 54 gastric cancers (GC) and 21 colorectal cancers (CRC), and took tumor tissues passaged for three successive generations...
2017: Cancer Cell International
Nicolette M Clark, Carlos A Garcia Galindo, Vandan K Patel, Michele L Parry, Rebecca J Stoll, John M Yavorski, Elizabeth P Pinkason, Edna M Johnson, Chelsea M Walker, Joseph Johnson, Wade J Sexton, Domenico Coppola, George Blanck
Background: Forty years ago the actin cytoskeleton was determined to be disrupted in fibroblasts from persons with DNA repair-defective, hereditary colon cancer, with no clear connection between the cytoskeleton and DNA repair defects at that time. Recently, the large number of sequenced genomes has indicated that mammalian mutagenesis has a large stochastic component. As a result, large coding regions are large mutagen targets. Cytoskeletal protein-related coding regions (CPCRs), including extra-cellular matrix proteins, are among the largest coding regions in the genome and are indeed very commonly mutated in cancer...
2017: Cancer Cell International
Yiyang Qin, Ikuo Sekine, Mengmeng Fan, Yuichi Takiguchi, Yuji Tada, Masato Shingyoji, Michiko Hanazono, Naoto Yamaguchi, Masatoshi Tagawa
Background: Pemetrexed (PEM) is an anti-cancer agent targeting DNA and RNA synthesis, and clinically in use for mesothelioma and non-small cell lung carcinoma. A mechanism of resistance to PEM is associated with elevated activities of several enzymes involved in nucleic acid metabolism. Methods: We established two kinds of PEM-resistant mesothelioma cells which did not show any increase of the relevant enzyme activities. We screened genes enhanced in the PEM-resistant cells with a microarray analysis and confirmed the expression levels with Western blot analysis...
2017: Cancer Cell International
Shuo Miao, Su-Mei Wang, Xue Cheng, Yao-Feng Li, Qing-Song Zhang, Gang Li, Song-Qing He, Xiao-Ping Chen, Ping Wu
Background: Erythropoietin (EPO) is a hypoxia-inducible stimulator of erythropoiesis. Besides its traditional application in anemia therapy, it offers an effective treatment in the cancer patients, especially those who receive chemotherapy. Several reports indicated that it could promote the tumor cell proliferation through its specific receptor (EPOR). Unfortunately, the role of EPO/EPOR in hepatocellular carcinoma (HCC) progressing is still uncertain. Methods: Protein in tumor tissue from HCC patients or H22 tumor-bearing mice was detected with immunohistochemistry...
2017: Cancer Cell International
Gang Chen, Dongdong Wang, Xiongqi Zhao, Jun Cao, Yingpeng Zhao, Fan Wang, Jianhua Bai, Ding Luo, Li Li
Background: Hepatocellular carcinoma (HCC) remains one of the most lethal cancers. MicroRNA-155 (miR-155) and collagen triple helix repeat containing 1 (CTHRC1) were found to be involved in hepatocarcinogenesis, but their detailed functions in HCC are unclear. Here, we aimed to investigate the underlying role of miR-155-5p and CTHRC1 in HCC. Methods: miR-155-5p and CTHRC1 expression levels were detected by qRT-PCR, IHC and WB in HCC patients and cell lines. Dual-luciferase assay, qRT-PCR and WB were used to validate the target interaction between miR-155-5p and CTHRC1...
2017: Cancer Cell International
Ke Wang, Dongjiang Chen, Zhouqi Qian, Daming Cui, Liang Gao, Meiqing Lou
Background: Chemoresistance of glioblastoma (GBM) is a feature of this devastating disease. This study is to determine the relationship between Hedgehog (HH)/Gli1 signaling pathway and chemoresistance to temozolomide (TMZ) in human GBM. Methods: We analyzed Gli1 nuclear staining and O6-methylguanine DNA methyltransferase (MGMT) expression in 48 cases of primary GBM tissues by immunohistochemistry. Quantitative PCR, western blot, methylation-specific PCR, cell proliferation and apoptosis assay were used to investigate changes of MGMT expression and chemosensitivity to TMZ after manipulating HH/Gli1 signaling activity in A172 and U251 GBM cell lines...
2017: Cancer Cell International
Chao-Yan Wu, Yuan Ke, Yi-Fei Zeng, Ying-Wen Zhang, Hai-Jun Yu
Background: We have reported that Chinese herbs Astragalus polysaccharide (APS) can inhibit nuclear factor kappaB (NF-κB) activity during the development of diabetic nephropathy in mice. NF-κB plays important roles in genesis, growth, development and metastasis of cancer. NF-κB is also involved in the development of treatment resistance in tumors. Here we investigated the antitumor activity of APS in human non-small cell lung cells (A549 and NCI-H358) and the related mechanisms of action...
2017: Cancer Cell International
Shivam Singh, Anoop Saraya, Prasenjit Das, Rinu Sharma
Background: Herein, for the first time, we report aberrant expression of membrane-associated RING-CH8 (MARCH8) in human esophageal squamous cell carcinoma. MARCH8 is a member of the recently discovered MARCH family of really interesting new genes (RING) E3 ligases. Though initial studies primarily focused on its immunomodulatory role, the newly discovered targets of this E3 ligase point towards its possible role in other biological processes such as embryogenesis and inhibition of apoptosis...
2017: Cancer Cell International
Long Yuan, Benling Xu, Peng Yuan, Jinxue Zhou, Peng Qin, Lu Han, Guangyu Chen, Zhenlei Wang, Zengci Run, Peng Zhao, Quanli Gao
Background: T lymphocytes play an indispensably important role in clearing virus and tumor antigen. There is little knowledge about impacts of inhibitory molecules with cytokine on tumor-infiltrating CD4+ T-cells in the presence of gastric cancer (GC). This study investigated the distribution of tumor-infiltrating T-cells subset and the differentiation as well as inhibitory phenotype of T-cells from blood and tissues of GC patients. Materials and methods: Patients with GC diagnosed on the basis of pre-operative staging and laparotomy findings were approached for enrollment between 2014 and 2015 at the Affiliated Cancer Hospital of Zhengzhou University, China...
2017: Cancer Cell International
Gang Xu, Chengxue Dang
Background: Human chemokine like factor (CKLF)-like MAL and related proteins for vesicle trafficking transmembrane, domain-containing member 5 (CMTM5) has been shown to involved and may function as a tumour suppressor in tumorigenesis. The current study aimed to investigate the expression and function of CMTM5 in human hepatocellular carcinoma (HCC). Methods: CMTM5 expression was examined by immunohistochemistry, and its clinical significance was analysed in 76 HCC specimens...
2017: Cancer Cell International
Bin Dai, Ting Yan, Ailiang Zhang
Background: We have reported that the phosphatidylinositol-3 kinase (PI3K)/Akt/RhoA signaling pathway mediates Wnt5a-induced cell migration of osteosarcoma cells. However, the specific receptors responding to Wnt5a ligand remain poorly defined in osteosarcoma metastasis. Methods: Wound healing assays were used to measure the migration rate of osteosarcoma cells transfected with shRNA or siRNA specific against ROR2 or indicated constructs. We evaluated the RhoA activation in osteosarcoma MG-63 and U2OS cells with RhoA activation assay...
2017: Cancer Cell International
María Fernanda Rubio, María Cecilia Lira, Francisco Damián Rosa, Adrían Dario Sambresqui, María Cecilia Salazar Güemes, Mónica Alejandra Costas
Background: RAC3 coactivator overexpression has been implicated in tumorigenesis, contributing to inhibition of apoptosis and autophagy. Both mechanisms are involved in resistance to treatment with chemotherapeutic agents. The aim of this study was to investigate its role in chemoresistance of colorectal cancer. Methods: The sensitivity to 5-fluorouracil and oxaliplatin in colon cancer cells HT-29, HCT 116 and Lovo cell lines, expressing high or low natural levels of RAC3, was investigated using viability assays...
2017: Cancer Cell International
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