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Oncology Reports

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https://www.readbyqxmd.com/read/29138861/immunogenic-tumor-cell-death-induced-by-chemotherapy-in-patients-with-breast-cancer-and-esophageal-squamous-cell-carcinoma
#1
Keita Aoto, Kousaku Mimura, Hirokazu Okayama, Motonobu Saito, Shun Chida, Masaru Noda, Takahiro Nakajima, Katsuharu Saito, Noriko Abe, Shinji Ohki, Tohru Ohtake, Seiichi Takenoshita, Koji Kono
It has been reported that chemo-radiotherapy can induce immunogenic tumor cell death (ICD), which triggers T-cell immunity mainly mediated by high-mobility group box 1 protein (HMGB1) and calreticulin. However, there is still limited information to support this theory relating to chemotherapy alone. In the present study, the expression of HMGB1 and calreticulin was evaluated by immunohistochemistry in pre-treatment biopsy specimens and surgically resected specimens, which were obtained from patients with breast cancer (n=52) and esophageal squamous cell carcinoma (ESCC) (n=8) who had been treated with neoadjuvant chemotherapy (NAC)...
November 14, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138867/effect-of-xanthohumol-on-th1-th2-balance-in-a-breast-cancer-mouse-model
#2
Wenchao Zhang, Yanlong Pan, Panhong Gou, Cheng Zhou, Lianqing Ma, Qiming Liu, Yuping Du, Jinbo Yang, Qin Wang
Xanthohumol (XN), a prenylflavonoid found in the hop plant, Humulus lupulus, exhibits a variety of biological activities. Numerous studies have reported that XN inhibits the growth of many types of cancer cells, but the effects of XN on tumor immunity have not yet been studied. We explored the effect of XN on Th1/Th2 balance and the underlying mechanism based on a BALB/c-4T1 breast cancer mouse model. The results showed that XN significantly slowed down tumor growth and inhibited expression of antitumor proliferation protein Ki-67 as well as breast cancer-specific marker cancer antigen 15-3 (CA15-3)...
November 13, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138858/downregulation-of-mir%C3%A2-19a%C3%A2-3p-promotes-invasion-migration-and-bone-metastasis-via-activating-tgf%C3%A2-%C3%AE-signaling-in-prostate-cancer
#3
Qingde Wa, Li Li, Hongcheng Lin, Xinsheng Peng, Dong Ren, Yan Huang, Peiheng He, Shuai Huang
Constitutive activation of TGF‑β signaling pathway is a well-documented mechanism responsible for the bone metastasis of prostate cancer (PCa). MicroRNAs (miRNAs) have been reported to be crucial for the activation of TGF‑β signaling via targeting downstream components of TGF‑β signaling pathway. Here, we report that miR‑19a‑3p is downregulated in bone metastatic PCa tissues and cells. Upregulation of miR‑19a‑3p suppresses invasion, migration in vitro and inhibits bone metastasis in vivo in PCa cells...
November 13, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138841/enhanced-activated-t%C3%A2-cell-subsets-in-prostate-cancer-patients-receiving-iodine-125-low-dose-rate-prostate-brachytherapy
#4
Makoto Kubo, Takefumi Satoh, Hiromichi Ishiyama, Ken-Ichi Tabata, Hideyasu Tsumura, Shoko Komori, Masatsugu Iwamura, Shiro Baba, Kazushige Hayakawa, Toshihiko Kawamura, Fumiya Obata
Radiotherapy (RT) is one of the most important treatments for prostate cancer. Although RT can kill cancer cells through direct and indirect effects of radiation, it occasionally induces an abscopal effect whereby localized radiation treatment is associated with elimination of metastatic cancer at a distance from the irradiated area. Thus, RT may induce an effective antitumor immune response, although the mechanism involved has remained unclear. The present was designed to evaluate this effect of RT in 36 patients with prostate cancer who provided informed consent prior to enrollment in this clinical trial...
November 13, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138866/hmga2-facilitates-epithelial-mesenchymal-transition-in-renal-cell-carcinoma-by-regulating-the-tgf-%C3%AE-smad2-signaling-pathway
#5
Bo Kou, Wei Liu, Xiaoshuang Tang, Qingshan Kou
High-mobility group AT-hook 2 (HMGA2), a member of the high mobility group family, has been reported to correlate with cancer progression. However, there is no report concerning the correlation between HMGA2 and metastasis in renal cell carcinoma. In the present study, we found that HMGA2 was highly expressed in five renal cell carcinoma cell lines compared with that in the normal renal tubular epithelial HK2 cell line. Additionally, HMGA2 facilitated cell migration and invasion of renal cell carcinoma cells, as evidenced by wound healing and Transwell assays...
November 10, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138865/silencing-of-vacuolar-atpase-c%C3%A2-subunit-atp6v0c-inhibits-the-invasion-of-prostate-cancer-cells-through-a-lass2-tmsg1-independent-manner
#6
Pengcheng Zou, Yifeng Yang, Xiaoyan Xu, Beiying Liu, Fang Mei, Jiangfeng You, Qichen Liu, Fei Pei
Vacuolar ATPase (V-ATPase), widespread in eukaryotic cells, is extensively expressed in many highly metastatic tumors, of which the V-ATPase c subunit ATP6V0C is particularly associated with the invasion and metastasis of cancer. ATP6V0C was directly found to interact with LASS2/TMSG1 which is a new tumor metastasis inhibitory gene identified by our laboratory in 1999. In order to study the role of ATP6V0C, we generated small interference RNA (siRNA) targeting ATP6V0C and investigated its function on the invasion of human prostate cancer cell line PC-3M-1E8 with high metastatic potential and its interplay with LASS2/TMSG1...
November 10, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138864/expression-level-of-microrna-200c-is-associated-with-cell-morphology-in-vitro-and-histological-differentiation-through-regulation-of-zeb1-2-and-e-cadherin-in-gastric-carcinoma
#7
Atsushi Kurata, Masatoshi Yamada, Shin-Ichiro Ohno, Shigeru Inoue, Hirotsugu Hashimoto, Koji Fujita, Masakatsu Takanashi, Masahiko Kuroda
Scirrhous type gastric cancer is characterized by diffuse infiltration of poorly differentiated adenocarcinoma cells and poor prognosis. Although association of poorly differentiated histology with reduction in E-cadherin expression, as well as association of microRNA (miR)-200c with E-cadherin through regulation of ZEB1/2, has been reported, participation of miR-200c in gastric carcinogenesis is not fully understood. We used 6 cell lines originating from gastric cancers, and investigated levels of miR-200c along with its target mRNAs ZEB1/2 and E-cadherin by qRT-PCR...
November 10, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138869/cepharanthine-exhibits-a-potent-anticancer-activity-in-p53-mutated-colorectal-cancer-cells-through-upregulation-of-p21waf1-cip1
#8
Arkornnut Rattanawong, Vilawan Payon, Wacharee Limpanasittikul, Chatikorn Boonkrai, Apiwat Mutirangura, Piyanuch Wonganan
Cepharanthine (CEP), a biscoclurine alkaloid isolated from Stephania cepharantha Hayata, has demonstrated anticancer activity in several different types of cancer cells. Colorectal cancer (CRC) is one of the most common cancers in both men and women. Mutated p53 in CRC was reported to be associated with resistance to commonly used chemotherapeutic agents including, 5‑fluorouracil, oxaliplatin and irinotecan. Many studies reported that mutation of p53 induced chemoresistance through several mechanisms, including induction of drug efflux, disruption of cell cycle regulation, evasion of apoptosis and upregulation of DNA repair...
November 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138862/liver-kinase%C3%A2-b1-restoration-promotes-exosome-secretion-and-motility-of-lung-cancer-cells
#9
Cheng Zhang, Xiang Xiao, Minyi Chen, Hitham Aldharee, Yanfang Chen, Weiwen Long
Liver kinase B1 (LKB1) regulates a variety of cellular functions, including cell polarity, energy metabolism and cell growth, by targeting multiple signaling pathways such as AMPK/mTOR and p53. LKB1 functions as a tumor suppressor in sporadic cancers including lung cancer. Extracellular vesicles such as exosomes secreted by cancer cells modulate the tumor microenvironment and progression by targeting both tumor cells (autocrine actions) and other types of cells associated with tumors (paracrine actions). While the roles of LKB1 in cellular signaling in general is well-studied, its specific role in exosome-mediated signaling remains to be explored...
November 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138851/nrp1-positive-lung-cancer-cells-possess-tumor-initiating-properties
#10
Luis E Jimenez-Hernandez, Karla Vazquez-Santillan, Rosario Castro-Oropeza, Gustavo Martinez-Ruiz, Laura Muñoz-Galindo, Carolina Gonzalez-Torres, Carlo C Cortes-Gonzalez, Georgina Victoria-Acosta, Jorge Melendez-Zajgla, Vilma Maldonado
Tumor-initiating cells possess the capacity for self-renewal and to create heterogeneous cell lineages within a tumor. Therefore, the identification and isolation of cancer stem cells is an essential step in the analysis of their biology. The aim of the present study was to determine whether the cell surface protein neuropilin 1 (NRP1) can be used as a biomarker of stem-like cells in lung cancer tumors. For this purpose, NRP1-negative (NRP1-) and NRP1-positive (NRP1+) cell subpopulations from two lung cancer cell lines were sorted by flow cytometry...
November 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138850/role-of-mitochondrial-function-in-the-invasiveness-of-human-colon-cancer-cells
#11
Chen-Sung Lin, Li-Tzu Liu, Liang-Hung Ou, Siao-Cian Pan, Chia-I Lin, Yau-Huei Wei
We investigated the role of mitochondrial function in the invasiveness of human colorectal cancer (CRC) cell lines, using paired primary SW480 and metastatic SW620 cells, and appraised the clinical relevance of the alteration of mtDNA copy number in 33 pairs of CRC specimens after surgical resection. Suppression of mitochondrial function was achieved by the exposure of cells to oligomycin A (OA) or by knockdown of mitochondrial transcriptional factor A (TFAM) to evaluate their effects on energy metabolism, reactive oxygen species, protein expression levels of epithelial-mesenchymal transition (EMT) markers and invasive activity of CRC cells...
November 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138846/itr%C3%A2-284-modulates-cell-differentiation-in-human-chronic-myelogenous-leukemia-k562-cells
#12
Jai-Sing Yang, Chao-Ying Lee, Hsin-Chung Cho, Chi-Cheng Lu, Sheng-Chu Kuo, Yen-Fang Wen, Fuu-Jen Tsai, Miau-Rong Lee, Shih-Chang Tsai
ITR‑284 is a carboxamide analog that can inhibit proliferation in human promyelocytic leukemia HL-60 cells. To understand the effects and molecular mechanisms of ITR‑284 in human erythromyeloblastoid leukemia, we treated K562 cells with different concentrations of ITR‑284 (0, 2, 4, 6, 8 and 10 nM) and all-trans retinoic acid (ATRA) (0, 0.1, 0.5, 1, 5 and 10 µM) for 24 h. The IC50 of ITR‑284 was ~10 nM in K562 cells treated for 24 h as determined by MTT assay. May-Grünwald-Giemsa staining and nitro blue tetrazolium (NBT) assays were used to determine cell morphology changes and differentiation after ITR‑284 and ATRA treatment...
November 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138842/placenta-specific-protein-1-promotes-cell-proliferation-and-invasion-in-non-small-cell-lung-cancer
#13
Li Yang, Tian-Qi Zha, Xiang He, Liang Chen, Quan Zhu, Wei-Bing Wu, Feng-Qi Nie, Qian Wang, Chong-Shuang Zang, Mei-Ling Zhang, Jing He, Wei Li, Wen Jiang, Kai-Hua Lu
Pulmonary carcinoma-associated proteins have emerged as crucial players in governing fundamental biological processes such as cell proliferation, apoptosis and metastasis in human cancers. Placenta-specific protein 1 (PLAC1) is a cancer-related protein, which is activated and upregulated in a variety of malignant tissues, including prostate cancer, gastric adenocarcinoma, colorectal, epithelial ovarian and breast cancer. However, its biological role and clinical significance in non-small cell lung cancer (NSCLC) development and progression are still unknown...
November 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138833/mir-16-mimics-inhibit-tgf-%C3%AE-1-induced-epithelial-to-mesenchymal-transition-via-activation-of-autophagy-in-non-small-cell-lung-carcinoma-cells
#14
Hui Wang, Ying Zhang, Qian Wu, Yong-Bin Wang, Wei Wang
Autophagy is critical for the metastasis of cancer cells through induction of epithelial-to-mesenchymal transition (EMT). Activation of TGF-β signaling plays a key role in regulating autophagy. miR-16 may be associated with non-small cell lung carcinoma (NSCLC) progression. However, the role of miR-16 in NSCLC cell autophagy in the presence of TGF-β and the underlying mechanism are still unclear. To test whether miR-16 targets ATG3 which is involved in autophagy of NSCLC cells, we studied the expression levels of miR-16 and ATG3 in NSCLC patients, verified the targeting of ATG3 by miR-16 by luciferase reporter gene system, and investigated the role of miR-16 in the autophagy of NSCLC cells...
November 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29115562/fungal-mannosylation-enhances-human-papillomavirus-16-e7-therapeutic-immunity-against-tc-1-tumors
#15
Zonglin Wang, Cuihua Wei, Yanjun Zhang, Wei Wang, Zheng Zhou, Gengfu Xiao
Cervical cancer, resulting from infection with human papillomavirus (HPV)16, remains the fourth most common cancer in women worldwide. Recently, three prophylactic HPV vaccines targeting high-risk HPVs (particularly HPV16 and HPV18) have been implemented to protect younger women. However, individuals with pre-existing infections have no benefit from prophylactic vaccines. Thus, there is an urgent need to develop therapeutic vaccines. HPV16 E7 has been widely utilized as a target for immune therapy of HPV16-associated lesions or cancers, reflecting the sustained existence of this virus in cancerous cells...
November 8, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29115551/p2y2-receptor-promotes-the-migration-and-invasion-of-breast-cancer-cells-via-emt-related-genes-snail-and-e-cadherin
#16
Ying Qiu, Yan Liu, Wei-Hua Li, Hong-Quan Zhang, Xin-Xia Tian, Wei-Gang Fang
Adenosine 5'-triphosphate (ATP) is one of the most abundant biochemical constituents within the tumor microenvironment and is postulated to play critical roles in the progression of a number of types of tumors via interaction with the P2Y2 receptor. In the present study, we demonstrated that the P2Y2 receptor was highly expressed in MCF7 and Hs578T breast cancer cells. Downregulation of the P2Y2 receptor by small interfering RNA (siRNA) significantly attenuated ATP- or UTP-driven migration and invasion of the breast cancer cells as well as expression of EMT-related genes Snail and E-cadherin...
November 7, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29115526/the-long-non-coding-rna-enst00000547547-reduces-5-fluorouracil-resistance-of-colorectal-cancer-cells-via-competitive-binding-to-microrna-31
#17
Jian Li, Xiaorong Li, Chaoqun Cen, Xiaohui Ai, Changwei Lin, Gui Hu
Colorectal cancer (CRC) is one of the most common cancers and the third leading cause of cancer-related deaths due to its rapid progression and poor prognosis. 5-Fluorouracil (5-FU)-based chemotherapies are the standard treatment for locally advanced CRC. However, a considerable percentage of CRCs have inherent or acquired 5-FU resistance, which critically impedes clinical outcomes. In the present study, we reported that the expression level ENST00000547547 was downregulated in 5-FU-resistant CRC cells in comparison with the parental cells, While rising with the treatment of 5-FU in parental cells...
November 7, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29115555/microrna-615-5p-targets-insulin-like-growth-factor-2-and-exerts-tumor-suppressing-functions-in-human-esophageal-squamous-cell-carcinoma
#18
Bingyin Yang, Rui Xie, Shang-Nong Wu, Cheng-Cheng Gao, Xiao-Zhong Yang, Jing-Fang Zhou
To investigate the expression pattern, clinical significance and functional roles of microRNA (miR)-615-5p in human esophageal squamous cell carcinoma (ESCC), , quantitative real-time PCR was performed to detect expression levels of miR‑615‑5p in ESCC tissues and cell lines. Associations between miR‑615‑5p expression and various clinicopathological features of ESCC patients were also statistically evaluated. The candidate targets of miR‑615‑5p were identified by integrating bioinformatics miRNA target prediction, western blot analysis and luciferase reporter assay...
November 6, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29115546/influence-of-the-twist-gene-on-the-invasion-and-metastasis-of-colon-cancer
#19
Duowei Wang, Bikash Rai, Feng Qi, Tong Liu, Jinmiao Wang, Xiaodong Wang, Bozhao Ma
The present study investigated the role of the Twist gene in epithelial-mesenchymal transition (EMT) and its effects on the invasion and metastasis of malignant tumors. In vitro, we transfected SW480, HCT116 and HT29 cells with recombinant plasmids, pTracer-CMV/BSD-Twist and pGenesil1.2-Twist-shRNA, to influence expression of Twist. The transfection efficacy of the plasmids in the cell lines was confirmed by flow cytometry. The relative mRNA and protein expression levels of Twist, E-cadherin and vimentin in the transfected cells were detected by RT-PCR and western blotting, respectively...
November 6, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29115543/the-screening-and-analysis-of-protein-signatures-and-signaling-associated-with-chemoresistance-based-on-protein-pathway-array-technology-in-gastric-cancer
#20
Guodong Lian, Leping Li, Fei Ye, Daguang Wang, Jinglei Liu, Yulong Shi, Changqing Jing, Jian Suo, David Y Zhang, Man Chen
The present study was aimed to identify proteins associated with signaling pathways involved in chemoresistance, and establish a predictive model for chemoresistance in gastric cancer patients after radical surgery. A total of 140 clinically-staged III gastric cancer samples from patients after D2 radical gastrectomy were enrolled in the present study. Protein Pathway Array (PPA) and 286 antibodies were used to assess the protein expression in tumor tissues of patients. The Significance Analysis of Microarray (SAM) software and clustering and discriminant analysis were used to identify differentially expressed proteins between chemosensitive and chemoresistant subsets, and a predictive model for chemoresistance was established using the independent predictive factors...
November 6, 2017: Oncology Reports
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