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Molecular Carcinogenesis

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https://www.readbyqxmd.com/read/28898462/p0071-interacts-with-e-cadherin-in-the-cytoplasm-so-as-to-promote-the-invasion-and-metastasis-of-non-small-cell-lung-cancer
#1
Huanyu Zhao, Di Zhang, Lianhe Yang, Enhua Wang
As a member of the p120-catenin (p120ctn) subfamily, the p0071 study in tumor is very limited. We demonstrated the clinicopathological significance of p0071 in non-small cell lung cancer (NSCLC), as well as E-cadherin. Co-immunoprecipitation was used to detect the interaction of p0071 with E-cadherin in A549 and SPC cells (E-cadherin is mainly expressed in the cytoplasm of these cells). p0071 cytoplasmic expression was knocked down by siRNA in these cells and this effect on the RhoA activity and cell invasion and migration ability were measured...
September 12, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28892201/two-brm-promoter-polymorphisms-predict-poor-survival-in-patients-with-hepatocellular-carcinoma
#2
Ivan Pasic, Kit Man Wong, Jonghun John Lee, Osvaldo Espin-Garcia, Yonathan Brhane, Dangxiao Cheng, Zhuo Chen, Devalben Patel, Catherine Brown, Roxana Bucur, David Reisman, Jennifer J Knox, Wei Xu, Rayjean J Hung, Geoffrey Guo, Sean P Cleary
BACKGROUND: Polymorphisms in the promoter of the BRM gene, a critical subunit of the chromatin remodeling SWI/SNF complex, have previously been implicated in risk and prognosis in Caucasian-predominant lung, head and neck, esophageal, and pancreatic cancers, and in hepatocellular cancers in Asians. We investigated the role of these polymorphisms in hepatocellular carcinoma (HCC) risk and prognosis. METHODS: HCC cases were recruited in a comprehensive cancer centre while the matched controls were recruited from family practice units from the same catchment area...
September 11, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28891089/molecular-insights-into-the-transcriptional-regulatory-role-of-thyroid-hormones-in-ovarian-cancer
#3
Elena Shinderman-Maman, Chen Weingarten, Dotan Moskovich, Haim Werner, Aleck Hercbergs, Paul J Davis, Martin Ellis, Osnat Ashur-Fabian
The regulation of cancer-relevant genes by the thyroid hormones, 3, 5, 3'-Triiodo-L-thyronine (T3) and L-thyroxine (T4), was recently acknowledged. However, limited data exists on the hormonal effects on gene expression in ovarian cancer, a gynecological malignancy associated with a low cure rate. The expression of fifteen genes involved in DNA repair, cell cycle, apoptosis and tumor suppression was evaluated in OVCAR-3 and A2780 cell lines, using real-time PCR following short incubation with T3 (1nM) or T4 (100nM)...
September 11, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28888039/role-of-aldh1-in-the-prognosis-of-esophageal-cancer-and-its-relationship-with-tumor-microenvironment
#4
Miao-Fen Chen, Ping-Tsung Chen, Ming-Shian Lu, Wen-Cheng Chen
Aldehyde dehydrogenase 1 (ALDH1) is associated with tumorigenesis, and significantly increased in cancer stem-like cells. In the present study, the role of ALDH1 in esophageal squamous cell carcinoma (ESCC) was investigated. We retrospectively analyzed the clinical outcomes of 148 ESCC and examined its correlation with ALDH1 levels. Furthermore, we preformed cellular and animal experiments to investigate the role of ALDH1 in tumor progression and microenvironment. Our data revealed that ALDH1 staining was positively linked to a higher clinical stage, higher loco-regional failure rate and shorter survival time...
September 9, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28876465/procyanidin-b2-3-3-di-o-gallate-induces-oxidative-stress-mediated-cell-death-in-prostate-cancer-cells-via-inhibiting-map-kinase-phosphatase-activity-and-activating-erk1-2-and-ampk
#5
Rahul Kumar, Gagan Deep, Michael F Wempe, Joseph Surek, Amit Kumar, Rajesh Agarwal, Chapla Agarwal
Neoplastic cells exhibit higher oxidative stress compared to normal cells; however, antioxidants based clinical trials have mostly failed. Another attractive therapeutic approach is to further increase the oxidative stress in cancer cells leading to cell death. Herein, we show that Procyanidin B2 3,3"-di-O-gallate (B2G2), the most active constituent of grape seed extract, treatment causes cell death in human prostate cancer (PCa) cells (LNCaP and 22Rv1) via increasing the reactive oxygen species (ROS) generation...
September 6, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28876464/novel-mutations-in-transthyretin-gene-associated-with-hepatocellular-carcinoma
#6
Deepshikha Pande Katare, Shabnam Malik, Ruchi Jakhmola Mani, Maryam Ranjpour, S K Jain
Hepatocellular carcinoma (HCC) is one of the major health problems with increasing incidence worldwide. We report the elevation in transthyretin (TTR) expression following HCC induction using diethylnitrosamine (DEN) and 2-aminoacetylfluorine (2-AAF) in male Wistar rats. The increase in its expression took place at very early stage and remained elevated throughout HCC progression. The analysis of TTR gene in HCC bearing rats revealed four novel mutations that alter three amino acids at positions 61, 100 and 115...
September 6, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28856729/the-protein-restriction-mimetic-resveratrol-is-an-autophagy-inducer-stronger-than-amino-acid-starvation-in-ovarian-cancer-cells
#7
Alessandra Ferraresi, Rossella Titone, Carlo Follo, Andrea Castiglioni, Giovanna Chiorino, Danny N Dhanasekaran, Ciro Isidoro
The potential benefit of nutrient starvation in the prevention and treatment of cancer is presently under consideration. Resveratrol (RV), a dietary polyphenol acting as a protein (caloric) restriction mimetic, could substitute for amino acid starvation. The effects of starvation and of caloric restriction are mediated, among others, by autophagy, a process that contributes to cell homeostasis by promoting the lysosomal degradation of damaged and redundant self-constituents. Up-regulation of autophagy favors cell survival under nutrient shortage situation, and may drive cancer cells into a non-replicative, dormant state...
August 30, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28833603/metformin-incombination-with-curcumin-inhibits-the-growth-metastasis-and-angiogenesis-of-hepatocellular-carcinoma-in-vitro-and-in-vivo
#8
Hui-Hui Zhang, Ying Zhang, Yan-Na Cheng, Fu-Lian Gong, Zhan-Qi Cao, Lu-Gang Yu, Xiu-Li Guo
Hepatocellular carcinoma (HCC) has poor prognosis due to the advanced disease stages by the time it is diagnosed, high recurrence rates and metastasis. In the present study, we investigated the effects of metformin (a safe anti-diabetic drug) and curcumin (a turmeric polyphenol extracted from rhizome of Curcuma longa Linn.) on proliferation, apoptosis, invasion, metastasis and angiogenesis of HCC in vitro and in vivo. It was found that co-treatment of metformin and curcumin could not only induce tumor cells into apoptosis through activating the mitochondria pathways, but also suppress the invasion, metastasis of HCC cells and angiogenesis of HUVECs...
August 19, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28833571/down-regulation-of-aquaporin-5-mediated-epithelial-mesenchymal-transition-and-anti-metastatic-effect-by-natural-product-cairicoside-e-in-colorectal-cancer
#9
Chen Chen, Ting Ma, Chao Zhang, Hao Zhang, Lijuan Bai, Lingyi Kong, Jianguang Luo
Epithelial-mesenchymal transition (EMT) has emerged as an important determinant role in colorectal cancer (CRC) metastasis. It has been reported that aquaporin 5 (AQP5) is closely linked to CRC metastasis. However, the effect of AQP5 on the EMT process of CRC remains unknown. The current study showed that overexpression of AQP5 activated EMT in CRC cells. Cairicoside E (CE), a natural resin glycoside compound isolated from Ipomoea cairica, showed promising cytotoxic activity in our previous report. Further investigation found that CE inhibited the expression of AQP5 and the EMT process...
August 17, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28802022/microrna-492-overexpression-involves-in-cell-proliferation-migration-and-radiotherapy-response-of-cervical-squamous-cell-carcinomas
#10
Mei Liu, Jusheng An, Manni Huang, Liming Wang, Binbin Tu, Yan Song, Kai Ma, Yu Wang, Shuren Wang, Hongxia Zhu, Ningzhi Xu, Lingying Wu
MicroRNAs (miRNAs) are small non-coding RNA that target protein-coding mRNAs at the post-transcriptional level. The aim of this study was to define the role of miR-492 in cervical squamous cell carcinomas. After microRNA profiling and comparison, we firstly detected miR-492 expression in 104 tumor tissues biopsies derived from advanced staged (FIGO IIB-IIIB) cervical squamous cell carcinoma patients before receiving concomitant chemoradiotherapy and found miR-492 expression was significantly higher in the specimens that were sensitive to concomitant chemoradiotherapy, as compared with insensitive cancer specimens (p < 0...
August 12, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28796414/genetic-variants-in-the-metzincin-metallopeptidase-family-genes-predict-melanoma-survival
#11
Yinghui Xu, Yanru Wang, Hongliang Liu, Qiong Shi, Dakai Zhu, Christopher I Amos, Shenying Fang, Jeffrey E Lee, Terry Hyslop, Xin Li, Jiali Han, Qingyi Wei
Metzincins are key molecules in the degradation of the extracellular matrix and play an important role in cellular processes such as cell migration, adhesion, and cell fusion of malignant tumors, including cutaneous melanoma (CM). We hypothesized that genetic variants of the metzincin metallopeptidase family genes would be associated with CM-specific survival (CMSS). To test this hypothesis, we first performed Cox proportional hazards regression analysis to evaluate the associations between genetic variants of 75 metzincin metallopeptidase family genes and CMSS using the dataset from the genome-wide association study (GWAS) from The University of Texas MD Anderson Cancer Center (MDACC) which included 858 non-Hispanic white patients with CM, and then validated using the dataset from the Harvard GWAS study which had 409 non-Hispanic white patients with invasive CM...
August 10, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28796401/combination-cisplatin-and-sulforaphane-treatment-reduces-proliferation-invasion-and-tumor-formation-in-epidermal-squamous-cell-carcinoma
#12
Candace Kerr, Gautam Adhikary, Daniel Grun, Nicholas George, Richard L Eckert
Epidermal squamous cell carcinoma is an extremely common type of cancer. Early tumors can be successfully treated by surgery, but recurrent disease is aggressive and resistant to therapy. Cisplatin is often used as a treatment, but the outcome is rarely satisfactory. For this reason new strategies are required. Sulforaphane is a diet-derived cancer prevention agent that is effective in suppressing tumor growth in animal models of skin cancer. We monitored the efficacy of sulforaphane and cisplatin as a combined therapy for squamous cell carcinoma...
August 10, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28796378/functional-genetic-variants-of-xrcc4-and-ercc1-predict-survival-of-gastric-cancer-patients-treated-with-chemotherapy-by-regulating-the-gene-expression
#13
Lei Cheng, Lixin Qiu, Mengyun Wang, Ruoxin Zhang, Menghong Sun, Xiaodong Zhu, Yanong Wang, Qingyi Wei
DNA repair protects genomic integrity and may modulate chemotherapy efficacy. Few large-scale studies have evaluated predictive roles of genetic variants of DNA repair genes in survival of Chinese gastric cancer (GCa) patients treated with chemotherapy. Here, we assessed the roles of 35 single nucleotide polymorphisms (SNPs) in DNA repair genes in survival of 1,002 GCa patients, of whom 694 received chemotherapy and 308 did not. Among patients receiving chemotherapy, the ERCC1 rs2298881A allele was associated with a better survival [hazards ratio (HR) =0...
August 10, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28796367/hbo1-promotes-cell-proliferation-in-bladder-cancer-via-activation-of-wnt-%C3%AE-catenin-signaling
#14
Zhaohui Chen, Lijie Zhou, Longwang Wang, Gallina Kazobinka, Xiaoping Zhang, Xiaomin Han, Bin Li, Teng Hou
Histone acetyltransferase binding to ORC1 (HBO1), a histone acetyltransferase, was recently identified as an oncoprotein; however, its role in bladder cancer remains unknown. In this study, we showed that HBO1 was highly expressed at both the mRNA and the protein levels in bladder cancer. HBO1 expression was associated with the clinical features of human bladder cancer, including tumor size (p = 0.018) and T (p = 0.007) classifications. Patients with higher HBO1 expression had shorter recurrence-free survival time, whereas patients with lower HBO1 expression had better survival time...
August 10, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28767179/upregulation-of-microrna-135b-and-microrna-182-promotes-chemoresistance-of-colorectal-cancer-by-targeting-st6galnac2-via-pi3k-akt-pathway
#15
Bing Liu, Yanfeng Liu, Lifen Zhao, Yue Pan, Yujia Shan, Yang Li, Li Jia
MicroRNAs (miRNAs) are increasingly involved in the development of drug resistance, including 5-fluorouracil (5-FU) resistance in colorectal cancer (CRC). Aberrant sialylation is correlated with human CRC. The study was to explore whether miR-135b and miR-182 modulated 5-FU chemoresistance of CRC by targeting ST6GALNAC2 via PI3K/AKT pathway. MiR-135b and miR-182 were found to be up-regulated in CRC tissues and 5-FU resistant CRC cell lines. Forced miR-135b and miR-182 expression also affected ST6GALNAC2 levels...
August 2, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28767177/phosphorylation-dependent-signaling-controls-degradation-of-dna-mismatch-repair-protein-pms2
#16
Inga Hinrichsen, Isabel M Weßbecher, Meik Huhn, Sandra Passmann, Stefan Zeuzem, Guido Plotz, Ricardo M Biondi, Angela Brieger
MutLα, a heterodimer consisting of MLH1 and PMS2, plays an important role in DNA mismatch repair and has been shown to be additionally involved in several other important cellular mechanisms. Previous work indicated that AKT could modulate PMS2 stability by phosphorylation. Still, the mechanisms of regulation of MutLα remain unclear. The stability of MutLα subunits was investigated by transiently overexpression of wild type and mutant forms of MLH1 and PMS2 using immunoblotting for measuring the protein levels after treatment...
August 2, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28762556/nadph-oxidase-5-nox5-induced-reactive-oxygen-signaling-modulates-normoxic-hif-1%C3%AE-and-p27-kip1-expression-in-malignant-melanoma-and-other-human-tumors
#17
Smitha Antony, Guojian Jiang, Yongzhong Wu, Jennifer L Meitzler, Hala R Makhlouf, Diana C Haines, Donna Butcher, Dave S Hoon, Jiuping Ji, Yiping Zhang, Agnes Juhasz, Jiamo Lu, Han Liu, Iris Dahan, Mariam Konate, Krishnendu K Roy, James H Doroshow
NADPH oxidase 5 (NOX5) generated reactive oxygen species (ROS) have been implicated in signaling cascades that regulate cancer cell proliferation. To evaluate and validate NOX5 expression in human tumors, we screened a broad range of tissue microarrays (TMAs), and report substantial overexpression of NOX5 in malignant melanoma and cancers of the prostate, breast, and ovary. In human UACC-257 melanoma cells that possesses high levels of functional endogenous NOX5, overexpression of NOX5 resulted in enhanced cell growth, increased numbers of BrdU positive cells, and increased γ-H2AX levels...
August 1, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28762551/monocarboxylate-transporter-1-is-a-key-player-in-glioma-endothelial-cell-crosstalk
#18
Vera Miranda-Gonçalves, Filipa Bezerra, Raquel Costa-Almeida, Marta Freitas-Cunha, Raquel Soares, Olga Martinho, Rui M Reis, Céline Pinheiro, Fátima Baltazar
Glioblastoma (GBM) is one of the most glycolytic and angiogenic human tumours, characteristics that contribute to the poor prognosis associated with this type of tumour. A lactate shuttle has been described between tumour cells and endothelial cells (ECs), with the monocarboxylate transporters (MCTs) acting as important players in this tumour-EC communication. In this study, we aimed to understand how the tumour microenvironment modulates EC metabolism, and to characterize the role of MCTs in the glioma-brain EC crosstalk...
August 1, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28731284/the-rna-binding-protein-hur-inhibits-expression-of-ccl5-and-limits-recruitment-of-macrophages-into-tumors
#19
Thilo F Brauß, Sofia Winslow, Sebastian Lampe, Anica Scholz, Andreas Weigert, Nathalie Dehne, Kristoffer von Stedingk, Tobias Schmid, Bernhard Brüne
The RNA-binding protein HuR promotes tumor growth by affecting proliferation, metastasis, apoptosis, and angiogenesis. Although immune cells, especially tumor-associated macrophages, are critical components of the tumor stroma, the influence of HuR in tumors on the recruitment of immune cells remains poorly understood. In the present study, we therefore aimed to elucidate the impact of tumor cell HuR on the interaction between tumor cells and macrophages. To this end, we stably depleted HuR in human MCF-7 breast cancer cells...
July 21, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28731203/ptenp1-inhibits-the-growth-of-esophageal-squamous-cell-carcinoma-by-regulating-socs6-expression-and-correlates-with-disease-prognosis
#20
Tuotuo Gong, Shuyu Zheng, Shan Huang, Shenbo Fu, Xuanwei Zhang, Shupei Pan, Tian Yang, Yuchen Sun, Ya Wang, Beina Hui, Jia Guo, Xiaozhi Zhang
PTEN pseudogene (PTENP1) has a tumor suppressive role in multiple cancers. However, its involvement in esophageal squamous cell carcinoma (ESCC) remains largely unknown. In this study, we set out to identify the role of PTENP1 in the development of ESCC. Gene Expression Omnibus database was employed to investigate the expression of PTENP1 in ESCC. sRNA target Database (StarBase v2.0) was used to query the downstream of PTENP1. Next, both in vitro and in vivo experiments were employed to explore the function...
July 21, 2017: Molecular Carcinogenesis
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