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https://www.readbyqxmd.com/read/29352232/the-silent-healer-mir-205-5p-up-regulation-inhibits-epithelial-to-mesenchymal-transition-in-colon-cancer-cells-by-indirectly-up-regulating-e-cadherin-expression
#1
Diana Gulei, Lorand Magdo, Ancuta Jurj, Lajos Raduly, Roxana Cojocneanu-Petric, Alin Moldovan, Cristian Moldovan, Adrian Florea, Sergiu Pasca, Laura-Ancuta Pop, Vlad Moisoiu, Liviuta Budisan, Cecilia Pop-Bica, Cristina Ciocan, Rares Buiga, Mihai-Stefan Muresan, Rares Stiufiuc, Calin Ionescu, Ioana Berindan-Neagoe
EMT represents the dominant program within advanced stages of colon cancer, where cells acquire migratory characteristics in order to invade secondary tissues and form metastasis. Where the majority of the therapeutic strategies are concentrated on the reduction of the tumor mass through different apoptotic mechanisms, the present study advocates an important role for miR-205-5p in impairment of colon cancer cells migration and restoration of the epithelial phenotype. Upon identification of a homogenous downregulated profile for miR-205-5p in colon adenocarcinoma patients, functional studies demonstrated that experimental upregulation of this sequence is able to significantly raise the levels of E-cadherin through direct inhibition of ZEB1...
January 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29352223/zeb1-confers-chemotherapeutic-resistance-to-breast-cancer-by-activating-atm
#2
Xiang Zhang, Zhen Zhang, Qing Zhang, Quansheng Zhang, Peiqing Sun, Rong Xiang, Guosheng Ren, Shuang Yang
Although zinc finger E-box binding homeobox 1 (ZEB1) has been identified as a key factor in the regulation of breast cancer differentiation and metastasis, its potential role in modulating tumor chemoresistance has not been fully understood. Here, through the study of specimens from a large cohort of human breast cancer subjects, we showed that patients with tumors that expressed high levels of ZEB1 responded poorly to chemotherapy. Moreover, ZEB1 expression was positively correlated with expression of B-cell lymphoma-extra large (Bcl-xL) and cyclin D1, which are key components of tumor chemoresistant mechanisms...
January 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29345288/downregulation-of-mir%C3%A2-205-is-associated-with-glioblastoma-cell-migration-invasion-and-the-epithelial-mesenchymal-transition-by-targeting-zeb1-via-the-akt-mtor-signaling-pathway
#3
Wei Chen, Kuan-Kei Kong, Xin-Ke Xu, Cheng Chen, Hui Li, Fang-Yu Wang, Xiao-Fang Peng, Zhan Zhang, Ping Li, Jun-Liang Li, Fang-Cheng Li
Glioblastoma (GBM) is the most common type of malignant brain tumor. In spite of recent advancements in surgical techniques, chemotherapy, and radiation therapy, patients with GBM often face a dire prognosis. MicroRNAs have been shown to modulate the aggressiveness of various cancers, and have emerged as possible therapeutic agents for the management of GBM. miR‑205 is dysregulated in glioma and act as a prognostic indicator. However, the role of miR‑205 in the development of GBM has not been elucidated...
February 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29337056/comparison-of-epithelial-mesenchymal-transition-mediated-tyrosine-kinase-inhibitor-resistance-in-non-small-cell-lung-cancer-cell-lines-with-wild-type-egfr-and-mutant-type-egfr
#4
Tsatsral Iderzorig, Joseph Kellen, Chike Osude, Sanjana Singh, James A Woodman, Christian Garcia, Neelu Puri
In the United States, lung cancer is the second most common cancer in men and women. In 2017, 222,500 new cases and 155,870 deaths from lung cancer are estimated to have occurred. A tyrosine kinase receptor, epidermal growth factor receptor (EGFR) is over expressed or mutated in non-small cell lung cancer (NSCLC) resulting in increased cell proliferation and survival. Tyrosine kinase inhibitors (TKIs) are currently being used as therapy for NSCLC patients, however, they have limited efficacy in NSCLC patients due to acquisition of resistance...
January 11, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29329360/tumor-suppressor-mir-128-3p-inhibits-metastasis-and-epithelial-mesenchymal-transition-by-targeting-zeb1-in-esophageal-squamous-cell-cancer
#5
Lili Zhao, Rui Li, Shanling Xu, Yi Li, Pei Zhao, Wei Dong, Zhenjun Liu, Qian Zhao, Bo Tan
MicroRNAs (miRNAs) are some short RNAs that regulate multiple biological functions at post-transcriptional levels, such as tumorigenic processes, inflammatory lesions and cell apoptosis. Zinc finger E-box binding homeobox factor 1 (ZEB1) is a crucial mediator of epithelial-mesenchymal transition (EMT). It induces malignant progression of various cancers including human esophageal squamous-cell carcinoma (ESCC). In this study, we found that miR-128-3p was downregulated in ESCC tissues and cells by using PCR...
January 10, 2018: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29326042/keratin-13-gene-is-epigenetically-suppressed-during-transforming-growth-factor-%C3%AE-1-induced-epithelial-mesenchymal-transition-in-a-human-keratinocyte-cell-line
#6
Mitsutoki Hatta, Yuki Miyake, Kunitoshi Uchida, Jun Yamazaki
Epithelial-mesenchymal transition (EMT) is a biological event in which epithelial cells lose their polarity and cell-cell adhesions and concomitantly acquire mesenchymal traits, and is thought to play an important role in pathological processes such as wound healing and cancer progression. In this study, we evaluated transforming growth factor (TGF)-β1-treated human keratinocyte HaCaT cells as an in vitro model of EMT. HaCaT cells were changed into an elongated fibroblast-like morphology, which is indicative of EMT in response to TGF-β1...
January 8, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29325758/mir-186-5p-upregulation-inhibits-proliferation-metastasis-and-epithelial-to-mesenchymal-transition-of-colorectal-cancer-cell-by-targeting-zeb1
#7
Jinlei Li, Limin Xia, Zhenhua Zhou, Zhigui Zuo, Chang Xu, Huayu Song, Jianhui Cai
MicroRNA-186-5p (miR-186-5p) is upregulated and exhibits as a crucial oncogene in various human tumors. However, the functions and underlying mechanisms of this microRNA on colorectal cancer remain largely unknown. Here, we report that miR-186-5p share a lower expression in colorectal cancer cell lines (HT116, H29, SW620 and LoVo) than in normal colonic epithelial cell line NCM460. MiR-186-5p overexpression inhibits proliferation, metastasis and epithelial-to-mesenchymal transition (EMT) of colorectal cancer cell line LoVo...
January 8, 2018: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29324442/the-epithelial-to-mesenchymal-transition-activator-zeb1-initiates-a-prometastatic-competing-endogenous-rna-network
#8
Xiaochao Tan, Priyam Banerjee, Xin Liu, Jiang Yu, Don L Gibbons, Ping Wu, Kenneth L Scott, Lixia Diao, Xiaofeng Zheng, Jing Wang, Ali Jalali, Milind Suraokar, Junya Fujimoto, Carmen Behrens, Xiuping Liu, Chang-Gong Liu, Chad J Creighton, Ignacio I Wistuba, Jonathan M Kurie
Epithelial tumor cells undergo epithelial-to-mesenchymal transition (EMT) to gain metastatic activity. Competing endogenous RNAs (ceRNAs) have binding sites for a common set of microRNAs (miRs) and regulate each other's expression by sponging miRs. Here, we address whether ceRNAs govern EMT-driven metastasis. High miR-181b levels were correlated with an improved prognosis in human lung adenocarcinomas, and metastatic tumor cell lines derived from a murine lung adenocarcinoma model in which metastasis is EMT-driven were enriched in miR-181b targets...
January 11, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29324315/histone-demethylase-kdm5a-inhibits-glioma-cells-migration-and-invasion-by-down-regulating-zeb1
#9
Bin Dai, Hui Huang, Feng Guan, Guangtong Zhu, Zhiyong Xiao, Beibei Mao, Haiyang Su, Zhiqiang Hu
Malignant gliomas are highly lethal cancers worldwide as tumor cells infiltrate to healthy brain tissue invariably. Histone demethylase KDM5A as an oncogene or tumor suppressor in cancer still has been controversial. KDM5A may have a different function in different type cancer cells. However, the specific roles of KDM5A in the progression of glioma remain undiscovered. In this study, we found that compared with primary glioma, metastasis glioma had low KDM5A levels. Besides, lower KDM5A levels were linked to poor survival in glioma cancer patients, indicating that KDM5A is a new prognostic marker for glioma cancer...
January 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29323713/neat1-contributes-to-breast-cancer-progression-through-modulating-mir-448-and-zeb1
#10
Xing Jiang, Yong Zhou, Ai-Jun Sun, Jun-Li Xue
Breast cancer is a kind of common female cancers. Increasing evidence has exhibited that lncRNAs exert a crucial role in breast cancer. So far, the mechanism of lncRNAs in breast cancer is still not well established. In our current study, we focused on the biological role of lncRNA Nuclear Enriched Abundant Transcript 1 (NEAT1) in breast cancer. We observed that NEAT1 levels were significantly increased in human breast cancer cells including MCF-7, MDA-MB-453, MDA-MB-231and SKBR3 cells compared to normal mammary epithelial cells MCF-10A while miR-448 was decreased...
January 11, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29323698/xist-accelerates-neuropathic-pain-progression-through-regulation-of-mir-150-and-zeb1-in-cci-rat-models
#11
Xue-Tao Yan, Jing-Min Lu, Yu Wang, Xiao-Li Cheng, Xiang-Hu He, Wen-Zhong Zheng, Hu Chen, Yan-Lin Wang
LncRNAs are reported to participate in neuropathic pain development. LncRNA X-inactive specific transcript (XIST) is involved in the progression of various cancers. However, the role of XIST in neuropathic pain remains unclear. In our present study, we established a chronic constriction injury (CCI) rat model and XIST was found to be greatly upregulated both in the spinal cord tissues and in the isolated microglias of CCI rats. Inhibition of XIST inhibited neuropathic pain behaviors including mechanical and thermal hyperalgesia...
January 11, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29320940/methylation-mediated-loss-of-sfrp2-enhances-invasiveness-of-non-small-cell-lung-cancer-cells
#12
X Zhang, X Rong, Y Chen, L Su
The malignancy of non-small cell lung cancer (NSCLC) largely results from its invasive manner. Secreted frizzled-related proteins (SFRPs) have been recently found to suppress the invasiveness of some cancers. On the other hand, the methylation of SFRPs increases protein degradation to reduce the activity of SFRPs, resulting in increased tumor cell invasion and cancer metastasis. However, the role of SFRPs in the invasion of NSCLC has not been reported. Here we analyzed the regulation of SFRPs in NSCLC cells and its effects on cell invasion...
February 2018: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/29317480/mir-205-targets-angiogenesis-and-emt-concurrently-in-anaplastic-thyroid-carcinoma
#13
Haleh Vosgha, Armin Ariana, Robert Smith, Alfred Lam
The current study aims to evaluate for the first time the inhibitory roles of miR-205 in the pathogenesis of anaplastic thyroid carcinoma. In addition, we investigated the mechanisms by which miR-205 regulates angiogenesis and epithelial-to-mesenchymal transition (EMT) in cancer. Two anaplastic thyroid carcinoma cell lines were transfected with the expression vector pCMV-MIR-205. Selected markers of angiogenesis and EMT including vascular endothelial growth factor A (VEGF-A) and zinc-finger E-box-binding homeobox 1 (ZEB1) were investigated by Western blot...
January 9, 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29316252/manganese-12-acetate-suppresses-the-migration-invasion-and-epithelial-mesenchymal-transition-by-inhibiting-wnt-%C3%AE-catenin-and-pi3k-akt-signaling-pathways-in-breast-cancer-cells
#14
Hongping Ju, Yongxia Li, Xiqian Xing, Xisong Miao, Yunping Feng, Yunhui Ren, Jing Qin, Dian Liu, Zihao Chen, Zhaoyu Yang
BACKGROUND: Breast cancer is the leading cause of cancer-related death in the world, and it is of great value to reveal the molecular mechanisms of breast cancer progression and develop new therapeutic targets. METHODS: Transwell assay is used to analyze the migration and invasion of breast cancer cells. Real-time PCR and western blotting assay are applied to detect the expression levels of epithelial-mesenchymal transition markers and the key members of Wnt/β-catenin and PI3K/AKT signaling pathways...
January 8, 2018: Thoracic Cancer
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
#15
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/29305721/paragangliomas-arise-through-an-autonomous-vasculo-angio-neurogenic-program-inhibited-by-imatinib
#16
Fabio Verginelli, Silvia Perconti, Simone Vespa, Francesca Schiavi, Sampath Chandra Prasat, Paola Lanuti, Alessandro Cama, Lorenzo Tramontana, Diana Liberata Esposito, Simone Guarnieri, Artenca Sheu, Mattia Russel Pantalone, Rosalba Florio, Annalisa Morgano, Cosmo Rossi, Giuseppina Bologna, Marco Marchisio, Andrea D'Argenio, Elisa Taschin, Rosa Visone, Giuseppe Opocher, Angelo Veronese, Carlo T Paties, Vinalogu K Rajasekhar, Cecilia Söderberg-Nauclér, Mario Sanna, Lavinia Vittoria Lotti, Renato Mariani-Costantini
Tumours can be viewed as aberrant tissues or organs sustained by tumorigenic stem-like cells that engage into dysregulated histo/organogenetic processes. Paragangliomas, prototypical organoid tumours constituted by dysmorphic variants of the vascular and neural tissues found in normal paraganglia, provide a model to test this hypothesis. To understand the origin of paragangliomas, we built a biobank comprising 77 cases, 18 primary cultures, 4 derived cell lines, 80 patient-derived xenografts and 11 cell-derived xenografts...
January 5, 2018: Acta Neuropathologica
https://www.readbyqxmd.com/read/29302045/mir-200c-inhibits-tgf-%C3%AE-induced-emt-to-restore-trastuzumab-sensitivity-by-targeting-zeb1-and-zeb2-in-gastric-cancer
#17
Xinliang Zhou, Xinyi Men, Riyang Zhao, Jing Han, Zhisong Fan, Yudong Wang, Yalei Lv, Jing Zuo, Lianmei Zhao, Meixiang Sang, Xian-De Liu, Baoen Shan
Gastric cancer is the fifth most common malignancy in the world, with Eastern Asia as one of areas with the highest incidence rates. Trastuzumab, a HER2-targeting antibody, combined with chemotherapy has been successfully employed for the gastric cancer patients with HER2 overexpression/amplification. However, trastuzumab resistance is a major problem in clinical practice. Here we observed that the trastuzumab-resistant gastric cancer cell line NCI-N87/TR expressed high levels of epithelial-mesenchymal transition factors and demonstrated increased migration and invasion capability compared with NCI-N87 cells...
January 4, 2018: Cancer Gene Therapy
https://www.readbyqxmd.com/read/29295724/long-non-coding-rna-cat104-promotes-cell-viability-migration-and-invasion-in-gastric-carcinoma-cells-through-activation-of-microrna-381-inhibiting-zinc-finger-e-box-binding-homeobox-1-zeb1-expression
#18
Gang Yuan, Jingzi Quan, Dongfang Dong, Qunying Wang
Gastric carcinoma (GC) remains the second leading cause of cancer-related death worldwide. Good biomarker is of paramount importance for GC therapy. This study was aimed to assess the role of long non-coding RNA (LncRNA) CAT104 in GC. We found that CAT104 was highly expressed in human GC NCI-N87, SGC7901, BGC823, BGC803 and AGS cells. Suppression of CAT104 decreased NCI-N87 cell viability, migration and invasion, but promoted apoptosis. CAT104 knockdown enhanced the expression of microRNA-381 (miR-381) expression in NCI-N87 cells...
January 2, 2018: Oncology Research
https://www.readbyqxmd.com/read/29290969/low-plasma-levels-of-mir-101-are-associated-with-tumor-progression-in-gastric-cancer
#19
Taisuke Imamura, Shuhei Komatsu, Daisuke Ichikawa, Mahito Miyamae, Wataru Okajima, Takuma Ohashi, Jun Kiuchi, Keiji Nishibeppu, Toshiyuki Kosuga, Hirotaka Konishi, Atsushi Shiozaki, Kazuma Okamoto, Hitoshi Fujiwara, Eigo Otsuji
Background: Several studies have identified the decreased expression of the tumor suppressor miR-101 in various cancers. In this study, we tested miR-101 as a potential therapeutic target and novel plasma biomarker for gastric cancer (GC). Results: The miR-101 expression level was significantly lower in GC tissues (P = 0.0038) and GC cell lines (P = 0.0238) than in normal gastric mucosa. Both exosomal and plasma miR-101 were significantly downregulated in GC patients compared with healthy volunteers (P = 0...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29288666/zeb1-stimulates-breast-cancer-growth-by-up-regulating-htert-expression
#20
Pan Yu, Xi Shen, Wen Yang, Yunke Zhang, Chunping Liu, Tao Huang
Dysfunctional cell proliferation and death are the foundation of the malignant biological characteristics of cancers. In this study, we discovered that ZEB1 was positively correlated with hTERT in breast invasive ductal carcinoma samples at both the mRNA and protein levels. Further, our in vitro study in breast cancer cell lines confirmed that ZEB1 regulates hTERT expression at the mRNA and protein levels; thus, hTERT promotes or inhibits telomerase activity, and telomere length is either protected or reduced...
December 27, 2017: Biochemical and Biophysical Research Communications
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