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https://www.readbyqxmd.com/read/28933253/the-role-of-p53-microrna-200-moesin-axis-in-invasion-and-drug-resistance-of-breast-cancer-cells
#1
Farheen Alam, Fatima Mezhal, Hussain El Hasasna, Vidhya A Nair, S R Aravind, Maha Saber Ayad, Ahmed El-Serafi, Wael M Abdel-Rahman
This study aimed to analyze the expression of microRNAs in relation to p53 status in breast cancer cells and to delineate the role of Moesin in this axis. We used three isogenic breast carcinoma cell lines MCF7 (with wild-type p53), 1001 (MCF7 with mutated p53), and MCF7-E6 (MCF7 in which p53 function was disrupted). MicroRNA expression was analyzed using microarray analysis and confirmed by real-time polymerase chain reaction. The 1001 clone with mutant p53 showed 22 upregulated and 25 downregulated microRNAs...
September 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28928831/park2-negatively-regulates-the-metastasis-and-epithelial-mesenchymal-transition-of-glioblastoma-cells-via-zeb1
#2
Haiyang Wang, Zhenfeng Jiang, Meng Na, Haitao Ge, Chongyang Tang, Hong Shen, Zhiguo Lin
Glioblastoma multiforme (GBM), one of the most aggressive human malignant brain tumors, is induced by multiple complex pathological mechanisms. The main cause of mortality in patients with GBM is the invasion-metastasis cascade of tumor cells. The dysfunction of Parkinson protein 2 E3 ubiquitin protein ligase (PARK2) is closely linked with the development of certain human cancers. However, whether PARK2 is associated with metastasis in GBM remains unknown. The present study demonstrated that the metastasis and invasion of U87 cells were significantly repressed by PARK2 overexpression...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28928657/colocynth-extracts-prevent-epithelial-to-mesenchymal-transition-and-stemness-of-breast-cancer-cells
#3
Kaushik Chowdhury, Ankit Sharma, Suresh Kumar, Gyanesh K Gunjan, Alo Nag, Chandi C Mandal
Modern treatment strategies provide better overall survival in cancer patients, primarily by controlling tumor growth. However, off-target and systemic toxicity, tumor recurrence, and resistance to therapy are still inadvertent hurdles in current treatment regimens. Similarly, metastasis is another deadly threat to patients suffering from cancer. This has created an urgent demand to come up with new drugs having anti-metastatic potential and minimum side effects. Thus, this study was aimed at exploring the anti-proliferative and anti-metastatic potential of colocynth medicinal plant...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28927893/msx1-induced-neural-crest-like-reprogramming-promotes-melanoma-progression
#4
Markus V Heppt, Joshua X Wang, Denitsa M Hristova, Zhi Wei, Ling Li, Brianna Evans, Marilda Beqiri, Samir Zaman, Jie Zhang, Martin Irmler, Carola Berking, Robert Besch, Johannes Beckers, Frank J Rauscher, Rick A Sturm, David E Fisher, Meenhard Herlyn, Mizuho Fukunaga-Kalabis
Melanoma cells share many biological properties with neural crest stem cells. Here we show that the homeodomain transcription factor Msh homeobox 1 (MSX1), which is significantly correlated with melanoma disease progression, reprograms melanocytes and melanoma cells towards a neural crest precursor-like state. MSX1-reprogrammed normal human melanocytes express the neural crest marker p75 and become multipotent. MSX1 induces a phenotypic switch in melanoma, which is characterized by an oncogenic transition from an E-cadherin-high non-migratory state towards a ZEB1-high invasive state...
September 16, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28916296/folate-targeted-amphiphilic-cyclodextrin-nanoparticles-incorporating-a-fusogenic-peptide-deliver-therapeutic-sirna-and-inhibit-the-invasive-capacity-of-3d-prostate-cancer-tumours
#5
James C Evans, Meenakshi Malhotra, Katrina Sweeney, Raphael Darcy, Colleen C Nelson, Brett G Hollier, Caitriona M O'Driscoll
The main barrier to the development of an effective RNA interference (RNAi) therapy is the lack of a suitable delivery vector. Modified cyclodextrins have emerged in recent years for the delivery of siRNA. In the present study, a folate-targeted amphiphilic cyclodextrin was formulated using DSPE-PEG5000-folate to target prostate cancer cells. The fusogenic peptide GALA was included in the formulation to aid in the endosomal release of siRNA. Targeted nanoparticles were less than 200nm in size with a neutral surface charge...
September 12, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28915612/the-roles-of-ing5-in-gliomas-a-good-marker-for-tumorigenesis-and-a-potential-target-for-gene-therapy
#6
Shuang Zhao, Zhi-Juan Zhao, Hao-Yu He, Ji-Cheng Wu, Xiao-Qing Ding, Lei Yang, Ning Jia, Zhi-Jie Li, Hua-Chuan Zheng
To elucidate the anti-tumor effects and molecular mechanisms of ING5 on glioma cells, we overexpressed it in U87 cells, and examined the phenotypes and their relevant molecules. It was found that ING5 overexpression suppressed proliferation, energy metabolism, migration, invasion, and induced G2/M arrest, apoptosis, dedifferentiation, senescence, mesenchymal- epithelial transition and chemoresistance to cisplatin, MG132, paclitaxel and SAHA in U87 cells. There appeared a lower expression of N-cadherin, Twist, Slug, Zeb1, Zeb2, Snail, Ac-H3, Ac-H4, Cdc2, Cdk4 and XIAP, but a higher expression of Claudin 1, Histones 3 and 4, p21, p53, Bax, β-catenin, PI3K, Akt, and p-Akt in ING5 transfectants...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28903350/zeb1-confers-stem-cell-like-properties-in-breast-cancer-by-targeting-neurogenin-3
#7
Chen Zhou, Huimin Jiang, Zhen Zhang, Guomin Zhang, Hang Wang, Quansheng Zhang, Peiqing Sun, Rong Xiang, Shuang Yang
Cancer stem cells (CSCs) are a subpopulation of cancer cells believed to be implicated in cancer initiation, progression, and recurrence. Here, we report that ectopic expression of zinc finger E-box binding homeobox 1 protein (ZEB1) results in the acquisition of CSC properties by breast cancer cells, leading to tumor initiation and progression in vitro and in vivo. The neurogenin 3 gene (Ngn3) is a bona fide target of ZEB1, and its repression is a key factor contributing to ZEB1-induced cancer cell stemness...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28902348/suppression-of-cul4a-attenuates-tgf-%C3%AE-1-induced-epithelial-to-mesenchymal-transition-in-breast-cancer-cells
#8
Yunshan Wang, Xiaoyan Liu, Hui Zheng, Qin Wang, Li An, Guangwei Wei
Transforming growth factor-β1 (TGF-β1) plays a vital role in the process of epithelial-to-mesenchymal transition (EMT) in breast cancer and the cullin 4A (CUL4A) gene is overexpressed in primary breast cancer. However, whether TGF-β1 signaling can induce CUL4A expression has not been investigated to date, at least to the best of our knowledge. In this study, using breast cancer cell lines, we found that the CUL4A expression level was increased following EMT induced by TGF-β1. Silencing CUL4A expression or CUL4A inhibition by thalidomide suppressed the EMT process induced by TGF-β1...
October 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28900500/cdc27-induces-metastasis-and-invasion-in-colorectal-cancer-via-the-promotion-of-epithelial-to-mesenchymal-transition
#9
Lin Qiu, Xin Tan, Jiaxin Lin, Ran-Yi Liu, Shuai Chen, Rong Geng, Jiangxue Wu, Wenlin Huang
Distant metastasis is the primary cause of cancer-related death among patients with colorectal cancer (CRC), and the discovery of novel therapeutic targets by further exploring the molecular mechanisms of CRC metastasis is therefore urgently needed. We previously illustrated that CDC27 overexpression promoted proliferation in CRC, but no studies have emphasized the role of CDC27 in cancer metastasis thus far. Our previous data indicated that the expression of CDC27 was significantly associated with distant metastasis in patient tissues, and therefore, in this study, we focused on the investigation of the potential mechanisms of CDC27 in CRC metastasis...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28899457/swainsonine-inhibits-invasion-and-the-emt-process-in-esophageal-carcinoma-cells-by-targeting-twist1
#10
Junxun Ma, Lijie Wan, Jinyu Li, Guoqing Zhang, Haitao Tao, Xiaoyan Li, Danyang Sun, Yi Hu
Esophageal cancer is a common gastrointestinal cancer, with a very high mortality rate in patients with metastasis. Swainsonine, a cytotoxic fungal alkaloid, has been shown to inhibit cell growth in esophageal cancer. In the present study, we explored the effects of swainsonine on cell invasion and metastasis in esophageal cancer cells. Human esophageal carcinoma cells were treated with different doses of swainsonine, and then cell viability, invasion and apoptosis were measured, respectively. The mRNA and protein expressions of Twist1, apoptosis- and EMT-related factors and PI3K/AKT pathway factors were detected by qRT-PCR and western blot...
September 6, 2017: Oncology Research
https://www.readbyqxmd.com/read/28892043/loss-of-prp4k-drives-anoikis-resistance-in-part-by-dysregulation-of-epidermal-growth-factor-receptor-endosomal-trafficking
#11
D P Corkery, L E Clarke, S Gebremeskel, J Salsman, J Pinder, C Le Page, L Meunier, Z Xu, A-M Mes-Masson, J N Berman, B Johnston, G Dellaire
Anoikis acts as a critical barrier to metastasis by inducing cell death upon cancer cell detachment from the extracellular matrix (ECM), thereby preventing tumor cell dissemination to secondary sites. The induction of anoikis requires the lysosomal-mediated downregulation of epidermal growth factor receptors (EGFRs) leading to termination of pro-survival signaling. In this study, we demonstrate that depletion of pre-mRNA splicing factor 4 kinase (PRP4K; also known as PRPF4B) causes dysregulation of EGFR trafficking and anoikis resistance...
September 11, 2017: Oncogene
https://www.readbyqxmd.com/read/28890291/mir-122-inhibits-epithelial-mesenchymal-transition-in-hepatocellular-carcinoma-by-targeting-snail1-and-snail2-and-suppressing-wnt-%C3%AE-cadherin-signaling-pathway
#12
Yun Jin, Junfeng Wang, Jiang Han, Ding Luo, Zhiwei Sun
The downregulation of microRNA-122 (miR-122) had been reported to be associated with tumor invasion and metastasis in hepatocellular carcinoma (HCC). However, the underlying mechanisms of miR-122 involved in epithelial-mesenchymal transition (EMT) still need to be investigated. In the study, we demonstrated that miR-122 was significantly downregulated in HCC tissues compared with adjacent normal tissues. MiR-122 expression was closely correlated with tumor size, vascular invasion and American Joint Committee on Cancer (AJCC) stage of HCC patients...
September 8, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28890036/tumoral-and-stromal-expression-of-slug-zeb1-and-zeb2-in-brain-metastasis
#13
Masaya Nagaishi, Satoshi Nakata, Yuko Ono, Koji Hirata, Yoshihiro Tanaka, Kensuke Suzuki, Hideaki Yokoo, Akio Hyodo
Epithelial-to-mesenchymal transition (EMT) has an active role in the malignant progression of epithelial tumor cells. The aim of the study was to identify the existence of the EMT mechanism in brain metastasis. Tumors from 29 patients with brain metastases were assessed in terms of the immunoexpression of EMT-related factors including Slug, ZEB1, ZEB2, and E-cadherin in tumor cells and the surrounding mesenchymal stromal cells. The results were compared between primary tumors and their matched metastatic brain tumors...
September 7, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28887549/satb2-%C3%AE-catenin-tcf-lef-pathway-induces-cellular-transformation-by-generating-cancer-stem-cells-in-colorectal-cancer
#14
Wei Yu, Yiming Ma, Sharmila Shankar, Rakesh K Srivastava
Recent studies have demonstrated the involvement of colorectal cancer (CRC) stem cells (CSC) in transformation, cancer progression and metastasis. The main goal of this paper was to examine the molecular mechanisms by which SATB2 induced malignant transformation of colorectal epithelial cells. SATB2 induced malignant transformation and these transformed cells gained the characteristics of CSCs by expressing stem cell markers (CD44, CD133, LGR5 and DCLK1) and transcription factors (c-Myc, Nanog and Sox2). Overexpression of SATB2 in normal colorectal epithelial cells increased cell motility, migration and invasion, which were associated with an increase in N-cadherin and Zeb1, and decrease in E-cadherin expression...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28886531/long-non-coding-rna-hottip-promotes-hypoxia-induced-epithelial-mesenchymal-transition-of-malignant-glioma-by-regulating-the-mir-101-zeb1-axis
#15
Shanyi Zhang, Weiwei Wang, Guoxin Liu, Shule Xie, Qunxing Li, Yingru Li, Zhaoyu Lin
Hypoxia is a universal characteristic of solid tumor and involving cancer metastasis via epithelial-mesenchymal transition (EMT). Long non-coding RNAs (lncRNAs) are known to regulate carcinogenesis and metastasis of various cancers. The aim of this study was to identify the function role of lncRNAs in the hypoxia-induced EMT of malignant glioma. We used U87 and U251 cell lines were treated under hypoxia to induce EMT, then lncRNA microarray analyse was performed between U87-hypoxia and parental cell line. The relative expression of lncRNA and HIF-1α were detected by qRT-PCR between glioma tissues without metastasis and that with metastasis...
September 5, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28882698/prognostic-value-of-microrna-9-and-microrna-155-expression-in-triple-negative-breast-cancer
#16
Min Hye Jang, Hyun Jeong Kim, Jae Moon Gwak, Yul Ri Chung, So Yeon Park
MicroRNAs (miRNAs) are involved in regulation of epithelial-mesenchymal transition (EMT) during breast cancer progression. The purpose of this study was to analyze the clinicopathologic significance of expression of EMT-related miRNAs, miR-9 and miR-155, in triple-negative breast cancers (TNBCs). We analyzed relative expression levels of miR-9 and miR-155 in 190 surgically resected TNBC specimens using quantitative real-time polymerase chain reaction. Then we analyzed the relationship between these miRNA expression levels and EMT marker expression (vimentin, smooth muscle actin (SMA), osteonectin, N-cadherin, E-cadherin, CD146, and ZEB1) assessed by immunohistochemistry...
September 4, 2017: Human Pathology
https://www.readbyqxmd.com/read/28871949/-knock-down-of-zeb1-inhibits-the-proliferation-invasion-and-migration-of-gastric-cancer-cells
#17
Dengyu Chen, Yifan Chu, Qingwei Zheng, Zhiben Xu, Ping Zhou, Sheng Li
Objective To down-regulate the expression of zinc-finger E-box binding homeobox 1 (ZEB1) gene by shRNA, and investigate its effect on invasion, migration and proliferation, as well as the related gene expressions of lncRNA HOTAIR and E-cadherin in human gastric cancer BGC823 cells. Methods RNA interfering (RNAi) was used to knock down ZEB1 in gastric cancer BGC823 cells. The recombinant plasmid shZEB1 was constructed and transfected into the gastric cancer BGC823 cells by Lipofectamine(TM) 2000, and the stably transfected cells were isolated by G418 selection and limited dilution...
August 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28870807/a-natural-product-toosendanin-inhibits-epithelial-mesenchymal-transition-and-tumor-growth-in-pancreatic-cancer-via-deactivating-akt-mtor-signaling
#18
Zhe Pei, Wei Fu, Gongping Wang
The pancreatic cancer is among the most aggressive malignancies with strong proclivity to metastasis. The malignancy during pancreatic cancer progression is largely ascribed to epithelial-mesenchymal transition (EMT). Here we showed that toosendanin (TSN), which is an active component in traditional Chinese medicine, can strongly attenuate pancreatic cancer progression. TSN suppressed the viability and grow of pancreatic cancer cells in a dose-dependent manner. The migration and invasion of pancreatic cancer cells were also consistently inhibited dose-dependently...
September 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28868351/the-cell-of-origin-dictates-the-genomic-landscape-of-breast-cancers
#19
Alain Puisieux, Roxane M Pommier, Agnès Tissier, Anne-Pierre Morel
Aberrant cell proliferation induced by activated oncogenes triggers oxidative stress and uncontrolled DNA replication, promoting genomic instability. We recently reported that human mammary stem cells exhibit the unique capacity to withstand an oncogenic activation by dint of an anti-oxidant program driven by the ZEB1 transcription factor. This pre-emptive program prevents the onset of chromosomal instability, leading to the development of tumors with unique pathological features.
2017: Molecular & Cellular Oncology
https://www.readbyqxmd.com/read/28864901/expression-of-transcription-factor-genes-in-cell-lines-corresponding-to-different-stages-of-pancreatic-cancer-progression
#20
I R Abjalimov, M V Zinovyeva, L G Nikolaev, M R Kopantzeva, E P Kopantzev, E D Sverdlov
The expression level of six transcription factor genes and the content of their protein products in five pancreatic cancer cell lines with parallel control of expression of three marker genes reflecting epithelial or mesenchymal state of cells was investigated. Cell lines MIA PaCa-2 and Capan-2 represented the best models of quasi-mesenchymal and epithelial, respectively, types of progression of the pancreatic ductal adenocarcinoma, according to the content of E-cadherin and vimentin and the expression of KLF5 and ZEB1 transcription factors...
July 2017: Doklady. Biochemistry and Biophysics
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