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https://www.readbyqxmd.com/read/28927233/fibroblast-growth-factor-2-mediated-fgfr-erk-signaling-supports-maintenance-of-cancer-stem-like-cells-in-esophageal-squamous-cell-carcinoma
#1
Osamu Maehara, Goki Suda, Mitsuteru Natsuizaka, Shunsuke Ohnishi, Yoshito Komatsu, Fumiyuki Sato, Masato Nakai, Takuya Sho, Kenichi Morikawa, Koji Ogawa, Tomoe Shimazaki, Megumi Kimura, Ayaka Asano, Yoshiyuki Fujimoto, Shinya Ohashi, Shingo Kagawa, Hideaki Kinugasa, Seiji Naganuma, Kelly A Whelan, Hiroshi Nakagawa, Koji Nakagawa, Hiroshi Takeda, Naoya Sakamoto
In esophageal squamous cell carcinoma (ESCC), a subset of cells defined by high expression of CD44 and low expression of CD24 has been reported to possess characteristics of cancer stem-like cells (CSCs). Novel therapies directly targeting CSCs have the potential to improve prognosis of ESCC patients. Although fibroblast growth factor-2 (FGF-2) expression correlates with recurrence and poor survival in ESCC patients, the role of FGF-2 in regulation of ESCC CSCs has yet to be elucidated. We report that FGF-2 is significantly upregulated in CSCs and significantly increases CSC content in ESCC cell lines by inducing epithelial-mesenchymal transition (EMT)...
September 13, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28927158/regulation-of-htra2-on-wt1-gene-expression-under-imatinib-stimulation-and-its-effects-on-the-cell-biology-of-k562-cells
#2
Lixia Zhang, Yan Li, Xiaoyan Li, Qing Zhang, Shaowei Qiu, Qi Zhang, Min Wang, Haiyan Xing, Qing Rao, Zheng Tian, Kejing Tang, Jianxiang Wang, Yingchang Mi
The aim of the present study was to investigate the regulation of Wilms Tumor 1 (WT1) by serine protease high-temperature requirement protein A2 (HtrA2), a member of the Htr family, in K562 cells. In addition, the study aimed to observe the effect of this regulation on cell biological functions and its associated mechanisms. Expression of WT1 and HtrA2 mRNA, and proteins following imatinib and the HtrA2 inhibitor 5-[5-(2-nitrophenyl) furfuryl iodine]-1, 3-diphenyl-2-thiobarbituric acid (UCF-101) treatment was detected with reverse transcription-quantitative polymerase chain reaction and western blot analysis...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927157/selected-mirna-levels-are-associated-with-ikzf1-microdeletions-in-pediatric-acute-lymphoblastic-leukemia
#3
J Krzanowski, J Madzio, A Pastorczak, A Tracz, M Braun, J Tabarkiewicz, A Pluta, W MÅ‚ynarski, I Zawlik
The clinical outcome of children with high-risk relapsed B-cell precursor acute lymphoblastic leukemia (BCP-ALL) is poor. The present study assessed the utility and prognostic value of selected microRNA (miRNA/miR) in BCP-ALL. The changes in the expression levels of these miRNAs regarding known gene lesions affecting lymphoid development [early B-cell factor 1 (EBF1), ETS variant 6 (ETV6), IKAROS family zinc finger 1 (IKZF1), paired box 5 (PAX5), cyclin dependent kinase inhibitor (CDKN) 2A/CDKN2B, retinoblastoma 1 (RB1), pseudoautosomal region 1 (PAR1), B-cell translocation gene 1 protein (BTG1)] were analyzed...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927154/resistance-to-the-mtor-inhibitor-everolimus-is-reversed-by-the-downregulation-of-survivin-in-breast-cancer-cells
#4
Ludovica Taglieri, Francesca De Iuliis, Anna Giuffrida, Sabrina Giantulli, Ida Silvestri, Susanna Scarpa
Everolimus (RAD001) is an inhibitor of mammalian target of rapamycin used in combination with exemestane to treat hormone receptor-positive advanced breast cancer. However, not all patients are equally sensitive to RAD001 and certain patients develop resistance. Therefore, the present study analyzed the mechanisms involved in the resistance of breast cancer cells to RAD001 in order to identify a potential tool to overcome it. The effects of RAD001 on the inhibition of cell viability, on the induction of apoptosis and autophagy and on the regulation of survivin, an anti-apoptotic protein, were evaluated in two breast cancer cell lines: BT474 (luminal B) and MCF7 (luminal A)...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927151/microrna-320-suppresses-cervical-cancer-cell-viability-migration-and-invasion-via-directly-targeting-foxm1
#5
Can Shi, Zhenyu Zhang
Cervical cancer is one of the most common types of gynecological cancer worldwide. MicroRNA-320 (miR-320) has been reported to be downregulated in a number of types of human cancer. However, the expression level and functions of miR-320 in cervical cancer remain unknown. In the present study, miR-320 was identified to be markedly downregulated in cervical cancer tissues and cell lines. For the functional studies, miR-320 mimic or miR-320 inhibitor was introduced into cervical cancer cell lines. The effects of miR-320 on cervical cancer cell viability, migration and invasion were evaluated using MTT, migration and invasion assays, respectively...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927146/impacts-of-survivin-and-caspase-3-on-apoptosis-and-angiogenesis-in-oral-cancer
#6
Shuxia Li, Yanqi Yang, Yanping Ding, Xiaofei Tang, Zheng Sun
The present study aimed to investigate the impact of survivin and caspase-3 on apoptosis and angiogenesis in oral cancer. A total of 16 oral leukoplakia cases accompanied by low-moderate epithelial dysplasia, 12 cases of oral leukoplakia accompanied by severe epithelial dysplasia, 17 cases of high-moderate differentiated oral squamous cell carcinoma and 10 cases of normal oral mucosa were selected. Immunohistochemistry was used to detect the expression levels of survivin, caspase-3, and caspase inhibitor factor VIII in lesions from each group...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927142/tumour-growth-suppressive-effect-of-arsenic-trioxide-in-squamous-cell-lung-carcinoma
#7
Leanne Lee Leung, Sze-Kwan Lam, Yuan-Yuan Li, James Chung-Man Ho
Lung squamous cell carcinoma (SCC) is the second most common subtype of non-small cell lung carcinoma. The anticancer effects of arsenic trioxide (ATO) in lung adenocarcinoma and small-cell lung cancer have previously been reported; however its effects in SCC remain unclear. An MTT assay and western blot analysis were performed to determine cell viability and protein expression, respectively, in the SK-MES-1 and SW900 SCC cell lines following treatment with ATO. Phosphatidylserine externalization, mitochondrial membrane depolarization and cell cycle distribution were studied using flow cytometry and the in vivo effects of ATO on tumour growth were investigated with a xenograft model...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927141/catalpol-promotes-cellular-apoptosis-in-human-hct116-colorectal-cancer-cells-via-microrna-200-and-the-downregulation-of-pi3k-akt-signaling-pathway
#8
Lan Liu, Hongwei Gao, Hongbo Wang, Yuan Zhang, Weihua Xu, Sen Lin, Hongjuan Wang, Qiong Wu, Jianqiang Guo
Catalpol is an effective active ingredient that functions as a diuretic and laxative, and exhibits blood sugar-lowering, liver protective, anti-aging and anticancer effects. In traditional Chinese medicine, catalpol is believed to be Yin nourishing. The anticancer effect of catalpol on human HCT116 colorectal cancer cells were investigated and the mechanism of action was evaluated. Cellular viability was detected using an MTT assay. Caspase-3 and caspase-9 activity, cellular apoptosis and nucleic morphology were analyzed using caspase-3 and caspase-9 activity assay kits, flow cytometric assays and DAPI staining assay, respectively...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927129/deficiency-of-gap-junction-composed-of-connexin43-contributes-to-oxaliplatin-resistance-in-colon-cancer-cells
#9
Min Su, Qi Zhang
Although comprehensive strategies in the treatment of colorectal cancer have been developed for a number of years, the five-year survival rate of metastatic colon cancer remains less than 10%. Oxaliplatin, a commonly used chemotherapeutic agent for metastatic colon cancer, improves the response rate of patients and prolongs patients' progression-free survival. However, the generation of resistance limits the clinical application of oxaliplatin, and the mechanisms of this remain unclear. The present study mainly investigated the effect of the gap junction (GJ) composed of connexin43 (Cx43) on oxaliplatin cytotoxicity in colon cancer cells...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927128/expression-of-ing4-is-negatively-correlated-with-cellular-proliferation-and-microvessel-density-in-human-glioma
#10
Bin Shao, Enzhong Liu
The present study aimed to investigate the associations of tumor inhibitor of growth 4 (ING4) with tumor cell proliferation and microvessel density (MVD) in human glioma. Semi-quantitative reverse transcription polymerase chain reaction, western blotting and immunohistochemistry (IHC) were used to detect the level of ING4 expression in normal brain tissues and glioma tissues of different pathological grades. The cell proliferation index (PI) and the level of MVD were detected using IHC, facilitating the analysis of the correlation between ING4 and cellular proliferation and MVD in human glioma...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927121/the-role-of-jagged1-notch-pathway-mediated-angiogenesis-of-hepatocarcinoma-cells-in-vitro-and-the-effects-of-the-spleen-invigorating-and-blood-stasis-removing-recipe
#11
Juze Lin, Yongxin Lin, Le Su, Qiao Su, Wei Guo, Xuhui Huang, Changjun Wang, Lizhu Lin
The objective of this study was to observe the effect of Jagged1/Notch pathway-mediated angiogenesis on the in vitro proliferation of hepatocellular carcinoma cells, and the effect and possible mechanism of the spleen-invigorating and blood stasis-removing recipe. Spleen-invigorating and blood stasis-removing recipe serum from SPF grade nude mice was prepared, and the fingerprint of the drugs of the spleen-invigorating and blood stasis-removing recipe and drug serum were identified by HPLC. SMMC-7721 human hepatocellular carcinoma cells were divided into the normal control group, DAPT inhibitor control group, and drug serum group according to the different treatments...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927115/wee1-inhibition-by-mk1775-as-a-single-agent-therapy-inhibits-ovarian-cancer-viability
#12
Minghui Zhang, Donye Dominguez, Siqi Chen, Jie Fan, Lei Qin, Alan Long, Xia Li, Yi Zhang, Huirong Shi, Bin Zhang
Wee1-like protein kinase (WEE1) physiologically serves a key function in maintaining the integrity of the cell genome through mediating the activation of cyclin-dependent kinase (CDK)1 and CDK2. Increased expression of WEE1 has been associated with the poor prognosis of patients with ovarian cancer. The present study aimed at examining the in vitro and in vivo antitumor activity of MK1775, a potent pharmacological inhibitor of WEE1, as a single agent against ovarian cancer cells. The cytotoxicity of MK1775 was examined in a panel of tumor cells using MTT in vitro...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927114/microrna-383-5p-acts-as-a-prognostic-marker-and-inhibitor-of-cell-proliferation-in-lung-adenocarcinoma-by-cancerous-inhibitor-of-protein-phosphatase-2a
#13
Shasha Zhao, Xinyuan Gao, Shuzhi Zang, Yunxia Li, Xianjun Feng, Xiaomei Yuan
Lung cancer is the leading cause of cancer-associated mortality worldwide. MicroRNAs (miRNAs/miRs) serve a role in the occurrence and development of lung cancer. The aim of the present study was to analyze the expression and function of the proliferation-associated miR-383-5p in lung adenocarcinoma (LAC). Samples of human LAC and matched adjacent normal lung tissues were surgically removed, and miR-383-5p expression and the pathological characteristics of lung adenocarcinoma were investigated. The present study revealed that miR-383-5p expression level was significantly decreased in LAC tissues and its expression levels were markedly associated with tumor size and differentiation...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927113/inhibition-of-autophagy-potentiates-the-proliferation-inhibition-activity-of-microrna-7-in-human-hepatocellular-carcinoma-cells
#14
Yanna Wang, Qiaoling Wang, Jiqing Song
MicroRNAs (miRNAs/miRs) are important molecules that are able to regulate multiple cellular processes in cancer cells. miR-7 has been previously identified as a tumor suppressive miRNA in several types of cancer. The aim of the present study was to investigate whether miR-7 is able to regulate autophagy in hepatocellular carcinoma (HCC) cells. It was identified that miR-7 was significantly downregulated in tumor tissues compared with adjacent normal tissues. Overexpression of miR-7 inhibited cell proliferative activity, which was partially reversed by miR-7 inhibitor...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927112/non-small-cell-lung-cancer-pc-9-cells-exhibit-increased-sensitivity-to-gemcitabine-and-vinorelbine-upon-acquiring-resistance-to-egfr-tyrosine-kinase-inhibitors
#15
Junko Hamamoto, Hiroyuki Yasuda, Kaito Aizawa, Makoto Nishino, Shigenari Nukaga, Toshiyuki Hirano, Ichiro Kawada, Katsuhiko Naoki, Tomoko Betsuyaku, Kenzo Soejima
Epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitors (EGFR-TKIs) are widely used for the treatment of non-small cell lung cancers (NSCLCs) harboring EGFR-activating mutations. However, lung cancer cells inevitably acquire resistance to these EGFR-TKIs. The majority of patients whose lung cancer acquires resistance to EGFR-TKIs are subjected to treatment using cytotoxic agents. The present study aimed to determine if lung cancer cells acquiring resistance to EGFR-TKIs also develop altered sensitivity to cytotoxic agents...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927111/luteolin-reduces-migration-of-human-glioblastoma-cell-lines-via-inhibition-of-the-p-igf-1r-pi3k-akt-mtor-signaling-pathway
#16
Qiang Wang, Handong Wang, Yue Jia, Hui Ding, Li Zhang, Hao Pan
Luteolin (3',4',5,7-tetrahydroxyflavone) is a common dietary flavonoid, which has been demonstrated to exert anticancer effects in multiple cancer models. However, the detailed mechanisms underlying the inhibitory effect of luteolin on glioblastoma cell metastasis remain poorly understood. The present study assessed the effects of luteolin in the U251MG and U87MG human glioblastoma cell lines. Luteolin treatment significantly inhibited glioblastoma cell migration, and this effect was associated with downregulated matrix metalloproteinase (MMP)-2, MMP-9 and upregulated tissue inhibitor of metalloproteinase (TIMP)-1 and TIMP-2...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927101/effects-of-p38mapk-mediated-excision-repair-cross-complementation-1-expression-on-prognosis-of-patients-with-non-small-cell-lung-cancer
#17
Dan He, Xiaomei Ma, Zhenhua Wu, Yang Wang, Shuyuan Zhao, Feng Han, Wei Sun
The present study aimed to investigate the effects of excision repair cross-complementation 1 (ERCC1) expression on the prognosis of patients with non-small cell lung cancer (NSCLC). A total of 140 patients with NSCLC who underwent radical resection were included. Immunohistochemical staining was performed on the tissue specimens obtained from patients and correlation analysis was used to determine the association between ERCC1 expression and clinicopathological characteristics. Cell proliferation was assessed using an MTT assay...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927099/interleukin-6-identified-as-an-important-factor-in-hypoxia-and-aldehyde-dehydrogenase-based-gefitinib-adaptive-resistance-in-non-small-cell-lung-cancer-cells
#18
Shi-Min An, Hui-Min Lei, Xu-Ping Ding, Fan Sun, Chun Zhang, Ya-Bin Tang, Hong-Zhuan Chen, Ying Shen, Liang Zhu
Gefitinib resistance and relapse of the disease were the greatest challenges facing clinical therapy of non-small-cell lung cancer (NSCLC). Of note, regarding the hypoxia condition in solid tumor tissues in vivo, roles of hypoxia in gefitinib adaptive resistance and its association with lung cancer stem cells (LCSCs) have not been fully elucidated. In the present study, the role of hypoxia in gefitinib adaptive resistance and its association with aldehyde dehydrogenase (ALDH)-based LCSC gefitinib resistance were comparatively studied using RNA-sequencing (RNA-seq) technology...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927097/inhibition-of-lhx2-by-mir-124-suppresses-cellular-migration-and-invasion-in-non-small-cell-lung-cancer
#19
Qinghui Yang, Liang Wan, Can Xiao, Haibo Hu, Longqiang Wang, Jun Zhao, Zhe Lei, Hong-Tao Zhang
Downregulated microRNA (miR)-124 is common in numerous types of cancer, including non-small cell lung cancer (NSCLC). A previous study by the authors demonstrated that LIM-homeobox domain 2 (LHX2) was upregulated and promoted cell growth in NSCLC. However, whether LHX2 affects the migratory and invasive abilities of NSCLC cells and the association of LHX2 with miR-124 remains unclear. The present study revealed that miR-124 expression was frequently decreased in human NSCLC cells and tissues and negatively correlated with LHX2 expression, which was increased in NSCLC cells and tissues...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927090/downregulation-of-pdcd4-by-mir-21-suppresses-tumor-transformation-and-proliferation-in-a-nude-mouse-renal-cancer-model
#20
Haixin Yuan, Shiyong Xin, Yaoping Huang, Yingfan Bao, Hao Jiang, Liqing Zhou, Xiaoqiang Ren, Liang Li, Qian Wang, Jianguo Zhang
Programmed cell death 4 (PDCD4) is known to suppress neoplastic transformation, cell proliferation and metastasis, and to be downregulated by microRNA-21 (miR-21) in renal cell carcinoma (RCC) cell lines and tissues. The aim of the present study was to investigate the roles of and association between PDCD4 and miR-21 in a nude mouse renal cancer model. A total of 24 BALB/c male nude mice were randomly assigned into the following three groups: Negative control (NC; n=8), miR-21 inhibitor (n=8) and miR-21 mimic (n=8)...
September 2017: Oncology Letters
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