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https://www.readbyqxmd.com/read/28100026/mir-203-inhibits-augmented-proliferation-and-metastasis-of-hepatocellular-carcinoma-residual-in-the-promoted-regenerating-liver
#1
Xiao-Bo Zheng, Xiao-Bo Chen, Liang-Liang Xu, Ming Zhang, Lei Feng, Peng-Sheng Yi, Jian-Wei Tang, Ming-Qing Xu
Liver resection is still the most commonly used therapeutic option for hepatocellular carcinoma (HCC) at present, and liver regeneration promotes HCC growth in the regenerating liver. The higher recurrence/metastasis of HCC is the main cause of death for HCC patients after liver resection. However, it remains unclear how to abolish the augmented growth and metastasis of the possible residual HCC induced by the promoted liver regeneration after liver resection. In this study, a rat model with liver cirrhosis and diffused HCC was established by Diethylnitrosamine administration, recombinant miR-203 adenovirus was administered to induce hepatic miR-203 overexpression and 30% partial hepatectomy (PH) was followed, then the effect of miR-203 on the proliferation, invasion and metastasis of the residual HCC in the remnant cirrhotic liver with promoted regeneration was investigated...
January 18, 2017: Cancer Science
https://www.readbyqxmd.com/read/28098914/role-of-mir-647-in-human-gastric-cancer-suppression
#2
Wenlong Cao, Weiyuan Wei, Zexu Zhan, Dongyi Xie, Yubo Xie, Qiang Xiao
MicroRNAs (miRNAs) regulate various oncogenes concomitantly, resulting in tumor suppression. They regulate proliferation and migration pathways in tumor development, suggesting a potential therapeutic role. In the present study, we found that miR-647 was markedly downregulated in gastric cancer (GC), and was significantly correlated with reduced tumor size and metastasis. In addition, miR-647 was also reduced in GC cell lines. Furthermore, overexpression of miR-647 in the GC cell lines inhibited cell proliferation, promoted cell cycle arrest at the G0/G1 phase and induced cell apoptosis...
January 17, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28093067/capza1-modulates-emt-by-regulating-actin-cytoskeleton-remodelling-in-hepatocellular-carcinoma
#3
Deng Huang, Li Cao, Shuguo Zheng
BACKGROUND: Epithelial-mesenchymal transition (EMT) elicits dramatic changes, including cytoskeleton remodelling as well as changes in gene expression and cellular phenotypes. During this process, actin filament assembly plays an important role in maintaining the morphology and movement of tumour cells. Capping protein, a protein complex referred to as CapZ, is an actin-binding complex that can regulate actin cytoskeleton remodelling. CAPZA1 is the α1 subunit of this complex, and we hypothesized that CAPZA1 regulates EMT through the regulation of actin filaments assembly, thus reducing the metastatic ability of hepatocellular carcinoma (HCC) cells...
January 16, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28087626/snail2-and-zeb2-repress-p-cadherin-to-define-embryonic-territories-in-the-chick-embryo
#4
Hervé Acloque, Oscar H Ocaña, Diana Abad, Claudio D Stern, M Angela Nieto
Snail and Zeb transcription factors induce epithelial to mesenchymal transition (EMT) in embryonic and adult tissues by direct repression of E-Cadherin transcription. The repression of E-Cadherin transcription by the EMT inducers Snail1 and Zeb2 plays a fundamental role in defining embryonic territories in the mouse, as E-Cadherin needs to be downregulated in the primitive streak and in the epiblast concomitant with the formation of mesendodermal precursors and the neural plate, respectively. Here we show that in the chick embryo, E-Cadherin is weakly expressed in the epiblast at pre-primitive streak stages where it is substituted by P-Cadherin We also show that Snail2 and Zeb2 repress P-Cadherin transcription in the primitive streak and the neural plate, respectively...
January 13, 2017: Development
https://www.readbyqxmd.com/read/28081224/resveratrol-impairs-glioma-stem-cells-proliferation-and-motility-by-modulating-the-wnt-signaling-pathway
#5
Chiara Cilibrasi, Gabriele Riva, Gabriele Romano, Massimiliano Cadamuro, Riccardo Bazzoni, Valentina Butta, Laura Paoletta, Leda Dalprà, Mario Strazzabosco, Marialuisa Lavitrano, Roberto Giovannoni, Angela Bentivegna
Glioblastoma multiforme (GBM) is a grade IV astrocytoma and the most common form of malignant brain tumor in adults. GBM remains one of the most fatal and least successfully treated solid tumors: current therapies provide a median survival of 12-15 months after diagnosis, due to the high recurrence rate. Glioma Stem Cells (GSCs) are believed to be the real driving force of tumor initiation, progression and relapse. Therefore, better therapeutic strategies GSCs-targeted are needed. Resveratrol is a polyphenolic phytoalexin found in fruits and vegetables displaying pleiotropic health benefits...
2017: PloS One
https://www.readbyqxmd.com/read/28067227/cdk4-6-dependent-activation-of-dub3-regulates-cancer-metastasis-through-snail1
#6
Tongzheng Liu, Jia Yu, Min Deng, Yujiao Yin, Haoxing Zhang, Kuntian Luo, Bo Qin, Yunhui Li, Chenming Wu, Tao Ren, Yang Han, Peng Yin, JungJin Kim, SeungBaek Lee, Jing Lin, Lizhi Zhang, Jun Zhang, Somaira Nowsheen, Liewei Wang, Judy Boughey, Matthew P Goetz, Jian Yuan, Zhenkun Lou
Tumour metastasis, the spread of cancer cells from the original tumour site followed by growth of secondary tumours at distant organs, is the primary cause of cancer-related deaths and remains poorly understood. Here we demonstrate that inhibition of CDK4/6 blocks breast tumour metastasis in the triple-negative breast cancer model, without affecting tumour growth. Mechanistically, we identify a deubiquitinase, DUB3, as a target of CDK4/6; CDK4/6-mediated activation of DUB3 is essential to deubiquitinate and stabilize SNAIL1, a key factor promoting epithelial-mesenchymal transition and breast cancer metastasis...
January 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28062404/endothelial-to-mesenchymal-transition-contributes-to-endothelial-dysfunction-and-dermal-fibrosis-in-systemic-sclerosis
#7
Mirko Manetti, Eloisa Romano, Irene Rosa, Serena Guiducci, Silvia Bellando-Randone, Amato De Paulis, Lidia Ibba-Manneschi, Marco Matucci-Cerinic
OBJECTIVE: Systemic sclerosis (SSc) features multiorgan fibrosis orchestrated predominantly by activated myofibroblasts. Endothelial-to-mesenchymal transition (EndoMT) is a transdifferentiation by which endothelial cells (ECs) lose their specific morphology/markers and acquire myofibroblast-like features. Here, we determined the possible contribution of EndoMT to the pathogenesis of dermal fibrosis in SSc and two mouse models. METHODS: Skin sections were immunostained for endothelial CD31 or vascular endothelial (VE)-cadherin in combination with α-smooth muscle actin (α-SMA) myofibroblast marker...
January 6, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28057716/mir-211-5p-suppresses-metastatic-behavior-by-targeting-snai1-in-renal-cancer
#8
Kefeng Wang, Wei Jin, Peng Jin, Xiang Fei, Xia Wang, Xiaonan Chen
: The snail family transcriptional repressor 1 (SNAI1) is known to promote metastatic phenotypes in renal cell carcinoma (RCC). However, the mechanism by which SNAI1 promotes RCC metastasis remains largely unexplored. Here, bioinformatics and quantitative validation revealed that miR-211-5p was downregulated in metastatic RCC clinical specimens compared to non-metastatic RCC tissues. Overexpression of miR-211-5p suppressed RCC cell migration and invasion via downregulation of SNAI1 expression...
January 5, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28032372/microrna-210-is-increased-and-it-is-required-for-dedifferentiation-of-osteosarcoma-cell-line
#9
Haixia Zhang, Qing Mai, Juntao Chen
Osteosarcoma (OS) is the most common malignant bone tumor and is prevalent in adolescents. In clinical studies, miR-210 has been reported to be tightly correlated to the poor prognosis of OS. Nevertheless, its roles in OS have not been fully elucidated. In view of the central role played by OS stem cells (OSCs) in the malignant progression of OS, this study investigated the influence of miR-210 on the formation of OSCs. Our previous findings suggested that the microenvironment of bone, abundant TGF-β1 and hypoxia, could induce OS cells to dedifferentiate into OSCs...
December 29, 2016: Cell Biology International
https://www.readbyqxmd.com/read/27966519/combretastatin-a4-regulates-proliferation-migration-invasion-and-apoptosis-of-thyroid-cancer-cells-via-pi3k-akt-signaling-pathway
#10
Weixin Liang, Yongqiang Lai, Mingzhang Zhu, Shangshu Huang, Weizhao Feng, Xiaoyu Gu
BACKGROUND Combretastatin A4 (CA4) is a potential therapeutic candidate for a variety of human cancer treatments. However, the inhibitive effects of CA4 on thyroid cancer cells are still not well-clarified. This study aimed to investigate the potential effect of CA4 on thyroid cancer cells, as well as underlying mechanism. MATERIAL AND METHODS Human thyroid papillary carcinoma cell line TPC1 was pre-treated with 5 concentrations of CA4 (0, 1, 2, 5, or 10 μM) for 2 h. Cell proliferation was determined by 3-(4, 5-dimethyl-2- thiazolyl)-2, 5-diphenyl -2-H-tetrazolium bromide (MTT) assay...
December 14, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27936102/am251-suppresses-epithelial-mesenchymal-transition-of-renal-tubular-epithelial-cells
#11
Tomoyo Yoshinaga, Kenichiro Uwabe, Shoichi Naito, Kenichi Higashino, Toru Nakano, Yoshito Numata, Akio Kihara
Epithelial-mesenchymal transition (EMT) of renal tubular epithelial cells is one of the causative mechanisms of kidney fibrosis. In our study, we screened lipophilic compounds using a lipid library including approximately 200 lipids to identify those that suppressed EMT induced by a transforming growth factor (TGF)-β1 stimulus. Initial screening was performed with the immortalized HK-2 renal tubule epithelial cell line. The most promising compounds were further tested in RPTEC primary renal tubule epithelial cells...
2016: PloS One
https://www.readbyqxmd.com/read/27923654/zeb1-is-neither-sufficient-nor-required-for-epithelial-mesenchymal-transition-in-ls174t-colorectal-cancer-cells
#12
Sabine Jägle, Annika Dertmann, Monika Schrempp, Andreas Hecht
Epithelial-mesenchymal transition (EMT) is implicated in metastases formation and acquired therapy resistance in several tumor entities. The two transcription factors SNAIL1 and ZEB1 are thought to be master regulators of EMT and to form a core regulatory network required for EMT-associated transcriptional reprogramming. Yet, inducible EMT models show the sequential upregulation first of SNAIL1 and only subsequently of ZEB1. Therefore, SNAIL1 and ZEB1 might be differentially needed for the onset and propagation of EMT...
January 22, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27916370/tanshinone-iia-attenuates-epithelial-mesenchymal-transition-to-inhibit-the-tracheal-narrowing
#13
Hongtao Duan, Lijie Ma, Honggang Liu, Yong Zhang, Zhipei Zhang, Xiaolong Yan, Xiaofei Li
BACKGROUND: This study examines the effects of tanshinone IIA (TIIA) on epithelial-mesenchymal transition (EMT) in tracheal transplantation and the ability of TIIA to inhibit tracheal narrowing after tracheal transplantation. Mechanisms that may be involved in this process are also explored. METHODS: Human bronchial epithelial cells were treated in vitro with TGF-β1 for 72 h. The cells were pretreated with TIIA (40 μg/mL) or DMSO for 2 h before TGF-β1 stimulation...
November 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27877226/rac1-overexpression-is-correlated-with-epithelial-mesenchymal-transition-and-predicts-poor-prognosis-in-non-small-cell-lung-cancer
#14
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/27874055/the-coordinated-roles-of-mir-26a-and-mir-30c-in-regulating-tgf%C3%AE-1-induced-epithelial-to-mesenchymal-transition-in-diabetic-nephropathy
#15
Zongji Zheng, Meiping Guan, Yijie Jia, Dan Wang, Ruoyu Pang, Fuping Lv, Zhizhou Xiao, Ling Wang, Hongbin Zhang, Yaoming Xue
MicroRNAs (miRNAs) play vital roles in the development of diabetic nephropathy. Here, we compared the protective efficacies of miR-26a and miR-30c in renal tubular epithelial cells (NRK-52E) and determined whether they demonstrated additive effects in the attenuation of renal fibrosis. TGFβ1 suppressed miR-26a and miR-30c expression but up-regulated pro-fibrotic markers in NRK-52E cells, and these changes were also found in the kidney cortex of 40-week-old diabetic Otsuka Long-Evans Tokushima fatty (OLETF) rats...
November 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27851965/adipose-snail1-regulates-lipolysis-and-lipid-partitioning-by-suppressing-adipose-triacylglycerol-lipase-expression
#16
Chengxin Sun, Lin Jiang, Yan Liu, Hong Shen, Stephen J Weiss, Yifa Zhou, Liangyou Rui
Lipolysis provides metabolic fuel; however, aberrant adipose lipolysis results in ectopic lipid accumulation and lipotoxicity. While adipose triacylglycerol lipase (ATGL) catalyzes the first step of lipolysis, its regulation is not fully understood. Here, we demonstrate that adipocyte Snail1 suppresses both ATGL expression and lipolysis. Adipose Snail1 levels are higher in fed mice than in fasted mice and higher in obese mice as opposed to lean mice. Insulin increases Snail1 levels in both murine and human adipocytes, wherein Snail1 binds to the ATGL promoter to repress its expression...
November 15, 2016: Cell Reports
https://www.readbyqxmd.com/read/27836546/apbb1-reinforces-cancer-stem-cell-and-epithelial-to-mesenchymal-transition-by-regulating-the-igf1r-signaling-pathway-in-non-small-cell-lung-cancer-cells
#17
Jei Ha Lee, Jung Yul Kim, Seo Yeon Kim, Soo Im Choi, Kuk Chan Kim, Eun Wie Cho, In Gyu Kim
Amyloid β precursor protein binding family B member 1(APBB1) was first identified as a binding partner of amyloid precursor protein during brain development, but its function in the context of cancer remain unclear. Here we show for the first time that APBB1 is partly associated with intensifying cancer stem cell(CSC) and epithelial-to-mesenchymal transition (EMT) and enhancing radiation-resistant properties of lung cancer cells. We found that APBB1 was highly expressed in ALDH1(high) CSC-like cells sorted from A549 lung cancer cells...
January 1, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27816688/sdhb-deficiency-promotes-tgf%C3%AE-mediated-invasion-and-metastasis-of-colorectal-cancer-through-transcriptional-repression-complex-snail1-smad3-4
#18
Haiyu Wang, Yusheng Chen, Guohao Wu
Succinate dehydrogenase (SDH) is a heterotetrameric complex, among which the catalytic core SDHB loss-of-function mutations lead to mitochondrial enzyme SDH dysfunction and are associated with cancer formation. However, the impact of SDHB loss on colorectal carcinoma and the underlying mechanisms are largely unknown. In this study, we found a coherent decreased SDHB expression both in human colorectal cancer (CRC) samples and CRC cell lines. Combined clinical analysis in a cohort of 43 CRC patients demonstrated a correlation between reduced SDHB activity and a more advanced clinical phenotype regarding lymphatic and distant metastasis...
December 2016: Translational Oncology
https://www.readbyqxmd.com/read/27807072/introduction-of-id2-enhances-invasiveness-in-id2-null-oral-squamous-cell-carcinoma-cells-via-the-snail-axis
#19
Y U Kamata, Tomoki Sumida, Yosuke Kobayashi, Akiko Ishikawa, Wataru Kumamaru, Yoshihide Mori
AIM: Inhibitor of DNA-binding (ID) proteins are negative regulators of basic helix-loop-helix transcription factors that generally stimulate cell proliferation and inhibit differentiation. However, the role of ID2 in cancer progression remains ambiguous. Here, we investigated the function of ID2 in ID2-null oral squamous cell carcinoma (OSCC) cells. MATERIALS AND METHODS: We introduced an ID2 cDNA construct into ID2-null OSCC cells and compared them with empty-vector-transfected cells in terms of cell proliferation, invasion, and activity and expression of matrix metalloproteinase (MMP)...
November 2016: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/27779676/inhibitory-effects-of-dieckol-on-hypoxia-induced-epithelial-mesenchymal-transition-of-ht29-human-colorectal-cancer-cells
#20
Seung-Hyun Jeong, You-Jin Jeon, Sun Joo Park
Hypoxia-induced epithelial-mesenchymal transition (EMT) has been identified as essential for tumor progression and metastasis. The present study examined the effects of an antioxidant, dieckol, on hypoxia‑induced EMT in HT29 human colorectal cancer cells. HT29 cells were treated with a hypoxia‑inducing agent, CoCl2, and an increase in the levels of intracellular reactive oxygen species (ROS) and various morphological changes, such as loss of cell‑cell contact and aggressive cell migration were observed...
December 2016: Molecular Medicine Reports
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