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https://www.readbyqxmd.com/read/29348456/twist1-induces-expression-of-discoidin-domain-receptor-2-to-promote-ovarian-cancer-metastasis
#1
Whitney R Grither, Laura M Divine, Eric H Meller, Daniel J Wilke, Riva A Desai, Andrew J Loza, Peinan Zhao, Anne Lohrey, Gregory D Longmore, Katherine C Fuh
The mesenchymal gene program has been shown to promote the metastatic progression of ovarian cancer; however, specific proteins induced by this program that lead to these metastatic behaviors have not been identified. Using patient derived tumor cells and established human ovarian tumor cell lines, we find that the Epithelial-to-Mesenchymal Transition inducing factor TWIST1 drives expression of discoidin domain receptor 2 (DDR2), a receptor tyrosine kinase (RTK) that recognizes fibrillar collagen as ligand...
January 19, 2018: Oncogene
https://www.readbyqxmd.com/read/29344161/uvb-radiation-represses-cyld-expression-in-melanocytes
#2
Silke Kuphal, Nadja Schneider, Ramin Massoumi, Claus Hellerbrand, Anja Katrin Bosserhoff
CYLD lysine 63 deubiquitinase (CYLD) was originally identified as a tumor suppressor that is mutated in familial cylindromatosis. Unlike in cylindromatosis, downregulation of the deubiquitinase CYLD in melanoma, a highly aggressive tumor, is not caused by mutations in the CYLD gene, but rather by a constitutive and high expression of the snail family transcriptional repressor 1 (SNAIL1). A reduced CYLD level leads to B-cell lymphoma-3/p50/p52-dependent nuclear factor-κB activation, which in turn triggers the expression of genes such as cyclin D1 and N-cadherin...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29340101/igf-1-induces-the-epithelial-mesenchymal-transition-via-stat5-in-hepatocellular-carcinoma
#3
Chuanzong Zhao, Qian Wang, Ben Wang, Qi Sun, Zhaobin He, Jianguo Hong, Florian Kuehn, Enyu Liu, Zongli Zhang
It has been reported that the epithelial-mesenchymal transition (EMT) plays an important role in hepatocellular carcinoma (HCC). However, the relationship between the insulin-like growth factor-1 (IGF-1) and EMT of HCC was not fully elucidated. In the present work, we found that the expression of N-cadherin, Vimentin, Snail1, Snail2, and Twist1 was positively associated with IGF-1R expression, while E-cadherin expression was negatively associated with IGF-1 expression in human HCC samples. Furthermore, we observed that IGF-1 up-regulated the expression of N-cadherin, Vimentin, Snail1, Snail2 and Twist1, and down-regulated the expression of E-cadherin...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29331415/nogo-b-receptor-promotes-epithelial-mesenchymal-transition-in-non-small-cell-lung-cancer-cells-through-the-ras-erk-snail1-pathway
#4
Donghua Wu, Baofeng Zhao, Xiaoyu Qi, Fang Peng, Hailu Fu, Xinming Chi, Qing Robert Miao, Shujuan Shao
Nogo-B receptor (NgBR) is a specific receptor of Nogo-B that regulates vascular remodeling and angiogenesis. Previously, we found that NgBR promotes the membrane translocation and activation of Ras in breast cancer cells and enhances the chemoresistance of hepatocellular carcinoma cells to 5-fluorouracil. However, the role of NgBR in lung cancer has not yet been elucidated. In the present study, we found that NgBR knockdown inhibited epithelial-mesenchymal transition (EMT) in non-small cell lung cancer (NSCLC) cells in vitro and metastasis of NSCLC cells in vivo...
January 10, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29328428/regulation-of-drug-resistance-and-metastasis-of-gastric-cancer-cells-via-the-microrna647-ank2-axis
#5
Wenlong Cao, Weiyuan Wei, Zexu Zhan, Dongyi Xie, Yubo Xie, Qiang Xiao
Due to a lack of effective methods for early diagnosis, the majority of patients with gastric cancer (GC) are diagnosed during the late stages of the disease, which are often accompanied by metastasis. For these patients, despite being considered an important therapeutic modality in the treatment of cancer, chemotherapy is usually not effective due to multidrug resistance (MDR). The expression levels of MDR/metastasis‑associated genes are regulated by numerous microRNAs (miRNAs/miRs). The expression of miR-647 in GC tissues and SGC7901/VCR cell line (drug resistance to vincristine) was detected by qRT-PCR...
January 11, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29310682/upregulation-of-the-long-non-coding-rna-afap1-as1-affects-the-proliferation-invasion-and-survival-of-tongue-squamous-cell-carcinoma-via-the-wnt-%C3%AE-catenin-signaling-pathway
#6
Ze-You Wang, Min Hu, Min-Hui Dai, Jing Xiong, Shuai Zhang, Han-Jiang Wu, Shan-Shan Zhang, Zhao-Jian Gong
BACKGROUND: Long non-coding RNA (lncRNA) actin filament associated protein 1 antisense RNA1 (AFAP1-AS1) is oriented in an antisense direction to the protein-coding gene AFAP1 in the opposite strand. Previous studies showed that lncRNA AFAP1-AS1 was upregulated and acted as an oncogene in a variety of tumors. However, the expression and biological functions of lncRNA AFAP1-AS1 in tongue squamous cell carcinoma (TSCC) are still unknown. METHODS: The expression level of AFAP1-AS1 was measured in 103 pairs of human TSCC tissues and corresponding adjacent normal tongue mucous tissues...
January 8, 2018: Molecular Cancer
https://www.readbyqxmd.com/read/29297384/upregulation-of-neto2-gene-in-colorectal-cancer
#7
Maria S Fedorova, Anastasiya V Snezhkina, Elena A Pudova, Ivan S Abramov, Anastasiya V Lipatova, Sergey L Kharitonov, Asiya F Sadritdinova, Kirill M Nyushko, Kseniya M Klimina, Mikhail M Belyakov, Elena N Slavnova, Nataliya V Melnikova, Maria A Chernichenko, Dmitry V Sidorov, Marina V Kiseleva, Andrey D Kaprin, Boris Y Alekseev, Alexey A Dmitriev, Anna V Kudryavtseva
BACKGROUND: Neuropilin and tolloid-like 2 (NETO2) is a single-pass transmembrane protein that has been shown primarily implicated in neuron-specific processes. Upregulation of NETO2 gene was also detected in several cancer types. In colorectal cancer (CRC), it was associated with tumor progression, invasion, and metastasis, and seems to be involved in epithelial-mesenchymal transition (EMT). However, the mechanism of NETO2 action is still poorly understood. RESULTS: We have revealed significant increase in the expression of NETO2 gene and deregulation of eight EMT-related genes in CRC...
December 28, 2017: BMC Genetics
https://www.readbyqxmd.com/read/29290941/eucalyptol-ameliorates-snail1-%C3%AE-catenin-dependent-diabetic-disjunction-of-renal-tubular-epithelial-cells-and-tubulointerstitial-fibrosis
#8
Dong Yeon Kim, Min-Kyung Kang, Sin-Hye Park, Eun-Jung Lee, Yun-Ho Kim, Hyeongjoo Oh, Yean-Jung Choi, Young-Hee Kang
Renal tubulointerstitial fibrosis is an important event in the pathogenesis of diabetic nephropathy. Under pathologic conditions, renal tubular epithelial cells undergo transition characterized by loss of cell-cell adhesion and increased cell migration. This study investigated that eucalyptol inhibited tubular epithelial cell disjunction and tubulointerstitial fibrosis stimulated by glucose. Human renal proximal tubular epithelial cells were incubated for up to 72 h in media containing 27.5 mM mannitol as osmotic controls or 33 mM glucose in the presence of 1-20 μM eucalyptol...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29250189/ddr2-facilitates-papillary-thyroid-carcinoma-epithelial-mesenchymal-transition-by-activating-erk2-snail1-pathway
#9
Zhong Liang, Wen-Jun Xie, Ming Zhao, Guo-Ping Cheng, Mei-Juan Wu
The upregulation of discoidin domain receptor tyrosine kinase 2 (DDR2) has been reported to be associated with poor prognosis and metastasis in numerous tumor types by inducing epithelial-mesenchymal transition (EMT); however, the expression profile of DDR2 in papillary thyroid carcinoma (PTC) with local metastasis and the effect of DDR2 on PTC cells remain unknown. The aim of the present study was to investigate the expression levels of DDR2 in tumor tissues of patients with PTC with local metastasis and cell lines and to determine the effect of DDR2 on EMT in PTC cells...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29233829/smad3-mediated-recruitment-of-the-methyltransferase-setdb1-eset-controls-snail1-expression-and-epithelial-mesenchymal-transition
#10
Dan Du, Yoko Katsuno, Dominique Meyer, Erine H Budi, Si-Han Chen, Hartmut Koeppen, Hongjun Wang, Rosemary J Akhurst, Rik Derynck
During epithelial-mesenchymal transition (EMT), reprogramming of gene expression is accompanied by histone modifications. Whether EMT-promoting signaling directs functional changes in histone methylation has not been established. We show here that the histone lysine methyltransferase SETDB1 represses EMT and that, during TGF-β-induced EMT, cells attenuate SETDB1 expression to relieve this inhibition. SETDB1 also controls stem cell generation, cancer cell motility, invasion, metastatic dissemination, as well as sensitivity to certain cancer drugs...
December 12, 2017: EMBO Reports
https://www.readbyqxmd.com/read/29228645/pro-invasive-properties-of-snail1-are-regulated-by-sumoylation-in-response-to-tgf%C3%AE-stimulation-in-cancer
#11
Shyam Kumar Gudey, Reshma Sundar, Carl-Henrik Heldin, Anders Bergh, Marene Landström
Transforming growth factor β (TGFβ) is a key regulator of epithelial-to-mesenchymal transition (EMT) during embryogenesis and in tumors. The effect of TGFβ, on ΕΜΤ, is conveyed by induction of the pro-invasive transcription factor Snail1. In this study, we report that TGFβ stimulates Snail1 sumoylation in aggressive prostate, breast and lung cancer cells. Sumoylation of Snail1 lysine residue 234 confers its transcriptional activity, inducing the expression of classical EMT genes, as well as TGFβ receptor I (TβRI) and the transcriptional repressor Hes1...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29209813/fsp1-specific-smad2-knockout-in-renal-tubular-endothelial-and-interstitial-cells-reduces-fibrosis-and-epithelial-to-mesenchymal-transition-in-murine-stz-induced-diabetic-nephropathy
#12
Ivonne Loeffler, Marita Liebisch, Stefanie Allert, Elke Kunisch, Raimund W Kinne, Gunter Wolf
Extracellular matrix deposition during tubulointerstitial fibrosis (TIF), a central pathological process in patients with diabetic nephropathy (DN), is driven by locally activated, disease-relevant myofibroblasts. Myofibroblasts can arise from various cellular sources, e.g., tubular epithelial cells via a process named epithelial-to-mesenchymal transition (EMT). Transforming growth factor beta 1 (TGF-β1) and its downstream Smad signaling play a critical role in both TIF and EMT. Whereas Smad3 is one central mediator, the role of the other prominently expressed variant, Smad2, is not completely understood...
December 6, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/29207164/silencing-tgif-suppresses-migration-invasion-and-metastasis-of-mda%C3%A2-mb%C3%A2-231-human-breast-cancer-cells
#13
Yadong Wang, Li Li, Haiyu Wang, Jiangmin Li, Haiyan Yang
This study explored the potential role of TG-interacting factor (TGIF) in migration, invasion and metastasis of the human breast cancer cell line MDA‑MB‑231. Western blot assay, immunohistochemistry and qRT-PCR assays were applied to detect the expression of protein and mRNA. Wound healing assay, Transwell invasion assay and tail vein metastatic assay were performed to assess the migration, invasion and metastasis of stable TGIF-silenced MDA‑MB‑231 cell line in vitro and in vivo. The significantly higher frequency of TGIF high-expression was observed in metastatic breast cancer (62...
December 4, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29207055/therapeutic-effects-of-conditioned-medium-from-bone-marrow-derived-mesenchymal-stem-cells-on-epithelial-mesenchymal-transition-in-a549-cells
#14
Xin Wang, Jun-Ling Gao, Man-Man Zhao, Hui-Xing Zhu, Yan-Xia Tian, Ran Li, Xiao-Hua Jiang, Lei Yu, Jing-Rui Tian, Jian-Zhong Cui
Pulmonary fibrosis (PF) is a chronic lung disease. The transforming growth factor-β1 (TGF-β1)/Smad3 signaling pathway plays an important role in the pathogenesis of pulmonary fibrosis. Bone marrow-derived mesenchymal stem cells (BMSCs) have been shown to be a modulator of the molecular aspects of the fibrosis pathway. However, it is still unknown as to whether the conditioned medium from BMSCs (BMSCs-CM) inhibits the epithelial-mesenchymal transition (EMT) process. This study confirmed the hypothesis that BMSCs-CM exerts an anti-fibrotic effect on human type II alveolar epithelial cells (A549) by suppressing the phosphorylation of Smad3...
November 24, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29198924/sinomenine-hydrochloride-attenuates-the-proliferation-migration-invasiveness-angiogenesis-and-epithelial-mesenchymal-transition-of-clear-cell-renal-cell-carcinoma-cells-via-targeting-smad-in-vitro
#15
Bin Zhao, Lei Liu, Jun Mao, Kun Liu, Weiwang Fan, Jiheng Liu, Zhiwei Zhang, Quanlin Li
New strategies for the treatment of clear-cell renal cell carcinoma (ccRCC) are urgently needed. Recently, accumulating evidence has demonstrated that sinomenine hydrochloride (SH), extracted from the plant sinomenium acutum, has potent anti-cancer activity in multiple human malignant solid tumors. However, the underlying molecular mechanism by which SH treatment exerts its antagonizing tumorigenic effects has not been clearly elucidated. In this study, we showed that SH treatment exerted profound effects on cell growth in ccRCC in a dose- and time-dependent manner in vitro...
November 29, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29188382/expression-patterns-of-duplicated-snail-genes-in-the-leech-helobdella
#16
Jin-Se Kim, Hee-Jin Kwak, Brenda Irene Medina Jiménez, Soon Cheol Park, Ping Xiao, David A Weisblat, Sung-Jin Cho
snail gene family members are zinc-finger transcription factors with key roles in morphogenesis. Involvement of snail family genes in mesoderm formation has been observed in insects and mammals. The snail genes are also involved in cell motility, neural differentiation, cell fate, survival decision, and left-right identity. The functions of snail genes have been studied primarily among ecdysozoans and deuterostomes, with relatively little work carried out in lophotrochozoans. In this study, we isolated two snail homologs (Hau-snail1 and Hau-snail2) from the leech Helobdella austinensis...
November 29, 2017: Development Genes and Evolution
https://www.readbyqxmd.com/read/29187649/-il-6-promotes-gastric-cancer-cell-proliferation-and-emt-through-regulating-mir-152-pik3r3-pathway
#17
Jie Sun, Lifang Fu
To explore the role of interleukin (IL)-6 in gastric cancer cells and the mechanisms.
 Methods: Gastric cancer cells MGC-803 were treated with 50 ng/mL of recombinant IL-6 protein, and then cell viability and cell migration were detected by MTT assay and wound-healing assay, respectively. The mRNA and protein expressions of E-cadherin, N-cadherin, vimentin, Snail1 and miR-152 were analyzed by RT-qPCR and Western blot, respectively. Moreover, MGC-803 cells were simultaneously or separately treated with IL-6 and transfected with miR-152 mimics, and then the mRNA expression of PIK3R3 and the protein levels of PIK3R3, Akt and p-Akt were determined...
November 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29185571/capsaicin-inhibits-the-metastasis-of-human-papillary-thyroid-carcinoma-bcpap-cells-through-the-modulation-of-the-trpv1-channel
#18
Shichen Xu, Li Zhang, Xian Cheng, Huixin Yu, Jiandong Bao, Rongrong Lu
Capsaicin (CAP), a potent transient receptor potential vanilloid type 1 (TRPV1) agonist, is a major ingredient of red pepper. Recently, capsaicin has attracted increasing attention owing to its multiple biological activities. However, the anticancer effects of capsaicin against various types of cancers, especially on thyroid carcinoma, have not been completely elucidated. TRPV1, which can be activated by capsaicin, plays a key role in many biological and physiological processes. In the present study, the anticancer properties of capsaicin against papillary thyroid cancer BCPAP cells were investigated...
November 29, 2017: Food & Function
https://www.readbyqxmd.com/read/29182685/mir205-inhibits-stem-cell-renewal-in-sum159pt-breast-cancer-cells
#19
Víctor Mayoral-Varo, Annarica Calcabrini, María Pilar Sánchez-Bailón, Jorge Martín-Pérez
miR205 has a dual activity, as tumor suppressor and as oncogene. Here we analyzed the impact of miR205 ectopic expression in the initial tumorigenic processes of SUM159PT, a triple negative breast cancer cell line with low endogenous levels of miR205. In SUM159PT, miR205 inhibited expression of its targets VEGFA, ErbB3, Zeb1, Fyn and Lyn A/B; it reduced cell proliferation, and Myc/cyclin D1 levels, while increased p27kip1 expression. miR205 abolished anchorage-independent growth, inhibited migration and invasion, Src-kinases/Stat3 axis activation, and levels of secreted MMP9...
2017: PloS One
https://www.readbyqxmd.com/read/29155818/snail1-mediated-downregulation-of-foxa-proteins-facilitates-the-inactivation-of-transcriptional-enhancer-elements-at-key-epithelial-genes-in-colorectal-cancer-cells
#20
Sabine Jägle, Hauke Busch, Vivien Freihen, Sven Beyes, Monika Schrempp, Melanie Boerries, Andreas Hecht
Phenotypic conversion of tumor cells through epithelial-mesenchymal transition (EMT) requires massive gene expression changes. How these are brought about is not clear. Here we examined the impact of the EMT master regulator SNAIL1 on the FOXA family of transcription factors which are distinguished by their particular competence to induce chromatin reorganization for the activation of transcriptional enhancer elements. We show that the expression of SNAIL1 and FOXA genes is anticorrelated in transcriptomes of colorectal tumors and cell lines...
November 20, 2017: PLoS Genetics
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