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https://www.readbyqxmd.com/read/27910892/dynamic-microenvironment-induces-phenotypic-plasticity-of-esophageal-cancer-cells-under-flow
#1
Gizem Calibasi Kocal, Sinan Güven, Kira Foygel, Aaron Goldman, Pu Chen, Shiladitya Sengupta, Ramasamy Paulmurugan, Yasemin Baskin, Utkan Demirci
Cancer microenvironment is a remarkably heterogeneous composition of cellular and non-cellular components, regulated by both external and intrinsic physical and chemical stimuli. Physical alterations driven by increased proliferation of neoplastic cells and angiogenesis in the cancer microenvironment result in the exposure of the cancer cells to elevated levels of flow-based shear stress. We developed a dynamic microfluidic cell culture platform utilizing eshopagael cancer cells as model cells to investigate the phenotypic changes of cancer cells upon exposure to fluid shear stress...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27904778/long-non-coding-rna-ccat2-promotes-gastric-cancer-proliferation-and-invasion-by-regulating-the-e-cadherin-and-lats2
#2
Yong-Jun Wang, Jian-Zhen Liu, Pei Lv, Yi Dang, Jiang-Yan Gao, Yong Wang
Dysregulation of long non-coding RNAs (lncRNAs) play important roles in tumor development and progression. The long non-coding RNA CCAT2 has been identified to be up-regulated in gastric cancer (GC). However, the detailed molecular mechanism of CCAT2 involved in GC progression is still unknown. The aim of this study was to explore the expression and role of CCAT2 in GC progression. In the study, the expression levels of CCAT2 were significantly up-regulated in 108 cases GC tissues compared with adjacent non-tumor tissues by qRT-PCR analysis...
2016: American Journal of Cancer Research
https://www.readbyqxmd.com/read/27904681/mir-330-3p-inhibits-gastric-cancer-progression-through-targeting-msi1
#3
Aoran Guan, Hui Wang, Xun Li, Hui Xie, Ruotian Wang, Yankun Zhu, Ruhong Li
Increasing evidences demonstrated that microRNAs (miRNAs) play critical roles in the human tumor development and progression. In our study, we found that miR-330-3p expression was downregulated in gastric cancer cell lines and tissues. Ectopic expression of miR-330-3p suppressed the gastric cancer cell proliferation, colony formation and migration. Overexpression of miR-330-3p promoted E-cadherin expression and inhibited the expression of N-cadherin, vimentin and snail. We identified Musashi-1 (MSI1) as a direct target gene of miR-330-3p in gastric cancer cell...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27902959/kaempferol-a-phytoestrogen-suppressed-triclosan-induced-epithelial-mesenchymal-transition-and-metastatic-related-behaviors-of-mcf-7-breast-cancer-cells
#4
Geum-A Lee, Kyung-Chul Choi, Kyung-A Hwang
As a phytoestrogen, kaempferol is known to play a chemopreventive role inhibiting carcinogenesis and cancer progression. In this study, the influences of triclosan, an anti-bacterial agent recently known for an endocrine disrupting chemical (EDC), and kaempferol on breast cancer progression were examined by measuring their effects on epithelial-mesenchymal transition (EMT) and metastatic-related behaviors of MCF-7 breast cancer cells. Morphological changes of MCF-7 cells were observed, and a wound-healing assay was performed after the treatment of triclosan and kaempferol...
November 22, 2016: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/27902771/piceatannol-attenuates-renal-fibrosis-induced-by-unilateral-ureteral-obstruction-via-downregulation-of-histone-deacetylase-4-5-or-p38-mapk-signaling
#5
Sin Young Choi, Zhe Hao Piao, Li Jin, Jung Ha Kim, Gwi Ran Kim, Yuhee Ryu, Ming Quan Lin, Hyung-Seok Kim, Hae Jin Kee, Myung Ho Jeong
Piceatannol, a resveratrol metabolite, is a phenolic compound found in red wine and grapes. We investigated the effect of piceatannol on renal fibrosis and histone deacetylase (HDAC) expression in a mouse model of unilateral ureteral obstruction (UUO). Fibrosis was established by UUO and piceatannol was intraperitoneally injected for 2 weeks. Piceatannol suppressed extracellular matrix (ECM) protein deposition including collagen type I and fibronectin as well as connective tissue growth factor (CTGF) and α-smooth muscle actin (α-SMA) in UUO kidneys...
2016: PloS One
https://www.readbyqxmd.com/read/27902484/depletion-of-mitochondrial-reactive-oxygen-species-downregulates-epithelial-to-mesenchymal-transition-in-cervical-cancer-cells
#6
Galina Shagieva, Lidiya Domnina, Olga Makarevich, Boris Chernyak, Vladimir Skulachev, Vera Dugina
In the course of cancer progression, epithelial cells often acquire morphological and functional characteristics of mesenchymal cells, a process known as epithelial-to-mesenchymal transition (EMT). EMT provides epithelial cells with migratory, invasive, and stem cell capabilities. Reactive oxygen species produced by mitochondria (mtROS) could be of special importance for pro-tumorigenic signaling and EMT.In our study, we used mitochondria-targeted antioxidant SkQ1 to lower the mtROS level and analyze their role in the regulation of the actin cytoskeleton, adhesion junctions, and signaling pathways critical for tumorigenesis of cervical carcinomas...
November 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/27900025/pbx3-promotes-gastric-cancer-invasion-and-metastasis-by-inducing-epithelial-mesenchymal-transition
#7
Shuanhu Wang, Chenglong Li, Wenbin Wang, Chungen Xing
The overexpression of pre-leukemia transcription factor 3 (PBX3) in tumors plays an important role in invasion, metastasis and proliferation in a variety of human cancer types. Tumor metastasis and angiogenesis significantly contribute to the progression of cancer and create challenges for cancer therapy. In the present study, reverse transcription-polymerase chain reaction demonstrated that PBX3 was upregulated in gastric cancer (GC) tissues and Transwell assay revealed that the overexpression of PBX3 promoted GC invasion and metastasis in vitro...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27898661/methyl-cpg-binding-domain-3-inhibits-epithelial-mesenchymal-transition-in-pancreatic-cancer-cells-via-tgf-%C3%AE-smad-signalling
#8
Min Xu, Junbo He, Jie Li, Wen Feng, Hailang Zhou, Hong Wei, Meng Zhou, Ying Lu, Jian Zeng, Wanxin Peng, Fengyi Du, Aihua Gong
BACKGROUND: Methyl-CpG-binding domain 3 (MBD3) is an aberrant expression in human malignancies. However, the role of MBD3 in pancreatic cancer progression remains to be clarified. In this study, we investigated the effects of MBD3 on the epithelial-mesenchymal transition (EMT), and the underlying mechanism in pancreatic cancer cells. METHODS: The abilities of migration and invasion were examined by transwell and BD Matrigel invasion assays. EMT and TGF-β/Smad signalling were evaluated...
November 29, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27889952/effects-of-different-doses-of-2-3-dimercaptosuccinic-acid-modified-fe2-o3-nanoparticles-on-intercalated-discs-in-engineered-cardiac-tissues
#9
Yongchao Mou, Shuanghong Lv, Fei Xiong, Yao Han, Yuwei Zhao, Junjie Li, Ning Gu, Jin Zhou
Although iron oxide nanoparticles (IRONs) were applied in clinical magnetic resonance imaging in vivo and magnetic tissue engineering in vitro widely, the underlying effects of IRONs on the development of cardiomyocytes especially the intercellular junctions, intercalated discs (IDs), remain an unknown issue. Given the critical role of three-dimensional (3D) engineered cardiac tissues (ECTs) in evaluation of nanoparticles toxicology, it remained necessary to understand the effects of IRONs on IDs assembly of cardiomyocytes in 3D environment...
November 27, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27888538/specific-n-glycan-alterations-are-coupled-in-epithelial-mesenchymal-transition-induced-by-egf-in-ge11-epithelial-cells
#10
Qingsong Xu, Chen Qu, Wenjing Wang, Jianguo Gu, Yuguang Du, Linsheng Song
Epithelial-mesenchymal transition (EMT) is a phenomenon in cancer progression during which cancer cells undergo remarkable alteration acquiring highly invasive property. The aim of this study was to evaluate specific N-glycan alterations during EMT induced by epidermal growth factor (EGF) in GE11 epithelial cells. Herein, we demonstrated that EGF activated epidermal growth factor receptor (EGFR)/Akt/extracellular signal-regulated kinase (ERK) phosphorylation and promoted GE11 cell proliferation. Meanwhile, EGF stimulated the epithelial cells to undergo morphological alteration, destroying cell-cell inter-contact and exhibiting mesenchymal cells higher metastatic potential...
November 26, 2016: Cell Biology International
https://www.readbyqxmd.com/read/27887793/antiproliferative-and-antimetastatic-action-of-quercetin-on-a549-non-small-cell-lung-cancer-cells-through-its-effect-on-the-cytoskeleton
#11
Anna Klimaszewska-Wiśniewska, Marta Hałas-Wiśniewska, Magdalena Izdebska, Maciej Gagat, Alina Grzanka, Dariusz Grzanka
To our knowledge, this study is the first to investigate the effect of the dietary flavonoid quercetin on the main cytoskeletal elements, namely microfilaments, microtubules and vimentin intermediate filaments, as well as cytoskeleton-driven processes in A549 non-small cell lung cancer cells. The methyl-thiazol-diphenyl-tetrazolium assay, annexin V/propidium iodide test, electron microscopic examination, cell cycle analysis based on DNA content, real-time PCR assays, in vitro scratch wound-healing assay, fluorescence staining of F-actin, β-tubulin and vimentin were performed to assess the effects of quercetin on A549 cells...
November 22, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27886397/telomerase-and-n-cadherin-differential-importance-in-adrenocortical-cancers-and-adenomas
#12
Sofia S Pereira, Valdemar Máximo, Ricardo Coelho, Rui Batista, Paula Soares, Susana G Guerreiro, Manuel Sobrinho-Simões, Mariana P Monteiro, Duarte Pignatelli
Adrenocortical carcinomas (ACC) are most frequently highly aggressive tumors. We assessed the telomerase reverse transcriptase (TERT) and N-cadherin role in the biology of ACC and their potential utility as molecular biomarkers, in different types of tumoral adrenocortical tissue. A total of 48 adrenal cortex samples (39 tumoral and 9 normal adrenal glands) were studied. TERT promoter mutations were searched by PCR and Sanger sequencing in two hotspots positions (-124 and -146). Also, telomerase and N-cadherin expression were evaluated by immunohistochemistry...
November 25, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27884977/nanog-regulates-epithelial-mesenchymal-transition-and-chemoresistance-in-ovarian-cancer
#13
Shan Qin, Yanfang Li, Xuexia Cao, Jiexian Du, Xianghua Huang
A key transcription factor associated with poor prognosis and resistance to chemotherapy in ovarian cancer is NANOG. However, the mechanism by which NANOG functions remains undefined. It has been suggested that epithelial to mesenchymal transition (EMT) also contributes to development of drug resistance in different cancers. We thus determined whether NANOG expression was associated with EMT and chemoresistance in epithelial ovarian cancer cells. NANOG expression was increased in epithelial ovarian cancer cell lines compared with its expression in normal epithelial ovarian cell lines...
November 24, 2016: Bioscience Reports
https://www.readbyqxmd.com/read/27878263/capn4-promotes-epithelial-mesenchymal-transition-in-human-melanoma-cells-through-activation-of-the-wnt-%C3%AE-catenin-pathway
#14
Enwen Wang, Donglin Wang, Bing Li, Huiwen Ma, Chunmei Wang, Lili Guan, Haiwei Zhang, Lin Yi, Shaolin Li
Melanoma, as one of the most highly metastatic types of cancer, is resistant to current treatment methods, including popular targeted molecular therapy. Consequently, it is essential to develop a deeper understanding of the mechanisms involved in melanoma progression so that alternative treatments may be identified. To date, accumulating evidence supports the use of calpains, including calpain small subunit 1 (also known as Capn4 or CAPNS1), which affect cancer progression through many pathways, such as epithelial‑mesenchymal transition (EMT), the Wnt/β-catenin (β-catenin) and the nuclear factor κB (NF-κB) signaling pathways...
November 15, 2016: Oncology Reports
https://www.readbyqxmd.com/read/27878257/downregulation-of-bmi-1-suppresses-epithelial%C3%A2-mesenchymal-transition-in-melanoma
#15
Yanting Liu, Zhaowei Chu, Qingyan Li, Bin Peng, Suyun Xu, Christine G Lian, Songmei Geng
Epithelial-mesenchymal transition (EMT) contributes to the invasion and metastasis of numerous malignant cancers, including melanoma. A significant higher expression of B-lymphoma Moloney murine leukemia virus insertion region-1 (Bmi-1) has been reported in cell lines from metastatic melanoma compared to cell lines from primary melanoma. There are studies that show that knockdown of Bmi-1 could induce E-cadherin expression in melanoma cells. However, the role of Bmi-1 in mediating EMT-like changes in melanoma has not yet been fully studied...
November 15, 2016: Oncology Reports
https://www.readbyqxmd.com/read/27878247/oridonin-inhibition-and-mir%C3%A2-200b%C3%A2-3p-zeb1-axis-in-human-pancreatic-cancer
#16
Zhifang Gui, Feng Luo, Yayang Yang, Can Shen, Shuquan Li, Jian Xu
The relationship among oridonin, miR-200b-3p and pancreatic cancer on epithelial-to-mesenchymal transition (EMT) was investigated for the molecular mechanism or signaling pathways on the migration in pancreatic cancer. BxPC-3 and PANC-1 cells were cultivated and the IC50 of oridonin in BxPC-3 and PANC-1 cells were obtained by the CCK-8 array. The expression of miR‑200b-3p was verified by using real-time PCR and its target gene was predicted. BxPC-3 and PANC-1 cells were treated with oridonin or transfected by miR-200b-3p, those cells were used for western blot assay, Transwell assay, ELISA, immunofluorescence staining, tumorigenesis assay in nude mice and immunohistochemical assay to verify the effects of oridonin or miR-200b-3p on pancreatic cancer...
November 18, 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27877226/rac1-overexpression-is-correlated-with-epithelial-mesenchymal-transition-and-predicts-poor-prognosis-in-non-small-cell-lung-cancer
#17
Yujuan Zhou, Qianjin Liao, Yaqian Han, Jie Chen, Zhigang Liu, Hang Ling, Jing Zhang, Wenjuan Yang, Linda Oyang, Longzheng Xia, Li Wang, Heran Wang, Lei Xue, Hui Wang, Bingqiang Hu
Objective: Ras-related C3 botulinum toxin substrate1(Rac1) and epithelial mesenchymal transition (EMT) are key therapeutic targets in cancer. We investigated the clinical significance of Rac1 and markers of EMT expression in non-small cell lung cancer (NSCLC), and their possible correlation with EMT phenotype. Methods: Immunohistochemistry was used to assess the expression of Rac1, Snail1, Twist1, N-cadherin (N-cad), Vimentin (Vim), and E-cadherin (E-cad) in 153 NSCLC paraffin-embedded specimens and 45 normal specimens adjacent to tumors...
2016: Journal of Cancer
https://www.readbyqxmd.com/read/27876712/mir-30a-decreases-multidrug-resistance-mdr-of-gastric-cancer-cells
#18
Chunying Li, Jinhai Zou, Guoqi Zheng, Jiankun Chu
BACKGROUND The effectiveness of chemotherapy for gastric cancer is largely limited by either intrinsic or acquired drug resistance. In this study, we aimed to explore the association between miR-30a dysregulation and multidrug resistance (MDR) in gastric cancer cells. MATERIAL AND METHODS We recruited 20 patients with advanced gastric cancer. Chemosensitivity was assessed after completion of the chemotherapy. SGC-7901 and SGC-7901/DDP cells were transfected for miR-30a overexpression or knockdown. Then, MTT assay was performed to assess the IC50 of DPP and 5-FU in SGC-7901 and SGC-7901/DDP cells...
November 23, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27868408/-effect-of-a-novel-ezh2-inhibitor-gsk126-on-prostate-cancer-cells
#19
Weiren Lin, Yatian Chen, Linghui Zeng, Rongbiao Ying, Feng Zhu
Objective: To investigate the effect of a novel EZH2 inhibitor GSK126 on cell growth, apoptosis and migration of prostate cancer cells. Methods: Prostate cancer PC-3 and DU145 cells were treated with GSK126 at different doses. Cell growth was detected by sulforhodamine assay. Cell apoptosis was assayed by Annexin V-/PI kit. Transwell chamber and wound healing assays were conducted to detect cell migration. The mRNA level was detected by quantitative PCR, and protein expression was detected by Western blot analysis...
May 25, 2016: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/27868181/correlation-between-the-high-expression-levels-of-cancer-germline-genes-with-clinical-characteristics-in-esophageal-squamous-cell-carcinoma
#20
Xinfeng Chen, Liping Wang, Dongli Yue, Jinyan Liu, Lan Huang, Li Yang, Ling Cao, Guohui Qin, Anqi Li, Dan Wang, Meng Wang, Yu Qi, Bin Zhang, Pierre van der Bruggen, Yi Zhang
Antigens encoded by cancer-germline genes are attractive targets for cancer immunotherapy. In this study, we aimed to evaluate the mRNA expression of cancer-germline genes, expression of the encoded proteins in patients with esophageal squamous cell carcinoma (ESCC) and their correlations with clinical characteristics. In addition, the effects of downregulation cancer-germline genes on ESCC cells were assessed in vitro. Our results showed that cancer-germline genes were frequently expressed in ESCC samples...
November 21, 2016: Histology and Histopathology
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