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Cellular Oncology (Dordrecht)

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https://www.readbyqxmd.com/read/27900663/mir-152-down-regulation-is-associated-with-met-up-regulation-in-leiomyosarcoma-and-undifferentiated-pleomorphic-sarcoma
#1
Laura Pazzaglia, Chiara Novello, Amalia Conti, Serena Pollino, Piero Picci, Maria Serena Benassi
PURPOSE: Highly aggressive adult soft tissue sarcomas (STS), i.e., leiomyosarcomas (LMS) and undifferentiated pleomorphic sarcomas (UPS), present complex genomic anomalies and overall 5-year survival rates of 20 to 40%. Here, we aimed to identify new biomarkers that may be employed to improve the treatment of non-translocation STS patients. We validated 12 miRNAs implicated in tumor development using primary STS samples and selected miR-152 for further analysis in STS-derived cell lines...
November 29, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27826898/collective-cell-migration-of-thyroid-carcinoma-cells-a-beneficial-ability-to-override-unfavourable-substrates
#2
Liudmila Lobastova, Dominik Kraus, Alexander Glassmann, Dilaware Khan, Christian Steinhäuser, Christina Wolff, Nadine Veit, Jochen Winter, Rainer Probstmeier
PURPOSE: Tumor cell invasion and metastasis are life threatening events. Invasive tumor cells tend to migrate as collective sheets. In the present in vitro study we aimed to (i) assess whether collective tumor cells gain benefits in their migratory potential compared to single cells and (ii) to identify its putative underlying molecular mechanisms. METHODS: The migratory potential of single and collective carcinoma cells was assessed using video time lapse microscopy and cell migration assays in the absence and presence of seven potential gap junction inhibitors or the Rac1 inhibitor Z62954982...
November 8, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27822706/targeting-cxcr4-and-fak-reverses-doxorubicin-resistance-and-suppresses-invasion-in-non-small-cell-lung-carcinoma
#3
Miodrag Dragoj, Zorica Milosevic, Jasna Bankovic, Nikola Tanic, Milica Pesic, Tijana Stankovic
BACKGROUND: Current high lung cancer mortality rates are mainly due to the occurrence of metastases and therapeutic resistance. Therefore, simultaneous targeting of these processes may be a valid approach for the treatment of this type of cancer. Here, we assessed relationships between CXC chemokine receptor type 4 (CXCR4) and focal adhesion kinase (FAK) gene expression levels and expression levels of the drug resistance-related genes ABCB1 and ABCC1, and tested the potential of CXCR4 and FAK inhibitors to reverse doxorubicin (DOX) resistance and to decrease the invasive capacity of non-small cell lung carcinoma (NSCLC) cells...
November 7, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27812856/erufosine-increases-rhob-expression-in-oral-squamous-carcinoma-cells-independent-of-its-tumor-suppressive-mode-of-action-a-short-report
#4
Shariq S Ansari, Nurullah Akgün, Martin R Berger
PURPOSE: Recently, we found that erufosine (erucylphospho-N,N,N trimethylpropylammonium) can induce up-regulation of RhoB expression in oral squamous carcinoma (OSCC) cells, thereby hinting at a tumor suppressive role. Therefore, we aimed to evaluate the role of RhoB in the tumor suppressive mode of action of erufosine on OSCC cells. METHODS: Anti-proliferative effects of erufosine were determined in HN-5 and FaDu OSCC-derived cells using a MTT assay. RhoB up-regulation was detected using microarray and qRT-PCR-based expression assays at IC25, IC50 and IC75 concentrations of erufosine...
November 3, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27798768/network-based-expression-analysis-reveals-key-genes-related-to-glucocorticoid-resistance-in-infant-acute-lymphoblastic-leukemia
#5
Zaynab Mousavian, Abbas Nowzari-Dalini, Ronald W Stam, Yasir Rahmatallah, Ali Masoudi-Nejad
PURPOSE: Despite vast improvements that have been made in the treatment of children with acute lymphoblastic leukemia (ALL), the majority of infant ALL patients (~80 %, < 1 year of age) that carry a chromosomal translocation involving the mixed lineage leukemia (MLL) gene shows a poor response to chemotherapeutic drugs, especially glucocorticoids (GCs), which are essential components of all current treatment regimens. Although addressed in several studies, the mechanism(s) underlying this phenomenon have remained largely unknown...
October 31, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27766591/inhibition-of-histone-deacetylases-sensitizes-glioblastoma-cells-to-lomustine
#6
Mikkel Staberg, Signe Regner Michaelsen, Rikke Darling Rasmussen, Mette Villingshøj, Hans Skovgaard Poulsen, Petra Hamerlik
PURPOSE: Glioblastoma (GBM) ranks among the deadliest solid cancers worldwide and its prognosis has remained dismal, despite the use of aggressive chemo-irradiation treatment regimens. Limited drug delivery into the brain parenchyma and frequent resistance to currently available therapies are problems that call for a prompt development of novel therapeutic strategies. While only displaying modest efficacies as mono-therapy in pre-clinical settings, histone deacetylase inhibitors (HDACi) have shown promising sensitizing effects to a number of cytotoxic agents...
October 20, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27761889/microrna-155-in-serum-derived-extracellular-vesicles-as-a-potential-biomarker-for-hematologic-malignancies-a-short-report
#7
Antonella Caivano, Francesco La Rocca, Vittorio Simeon, Marco Girasole, Simone Dinarelli, Ilaria Laurenzana, Angelo De Stradis, Luciana De Luca, Stefania Trino, Antonio Traficante, Giovanni D'Arena, Giovanna Mansueto, Oreste Villani, Giuseppe Pietrantuono, Luca Laurenti, Luigi Del Vecchio, Pellegrino Musto
PURPOSE: The use of extracellular vesicles (EVs) from body fluids as "liquid biopsies" is emerging as a promising approach for the diagnosis, prognosis and therapeutic monitoring of cancer patients. MicroRNA-155 (miR155), a non-coding transcript of the B-cell integration cluster (BIC) gene, has been reported to play a critical role in the pathogenesis of several types of hematologic malignancies (HMs) in which high miR155 levels have been found. At yet, however, the EV miR155 level and its putative clinical relevance in sera of HM patients have not been reported...
October 19, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27709558/dna-copy-number-alterations-gene-expression-changes-and-disease-free-survival-in-patients-with-colorectal-cancer-a-10-year-follow-up
#8
Elisabetta Bigagli, Carlotta De Filippo, Cinzia Castagnini, Simona Toti, Francesco Acquadro, Francesco Giudici, Marilena Fazi, Piero Dolara, Luca Messerini, Francesco Tonelli, Cristina Luceri
BACKGROUND: DNA copy number alterations (CNAs) and gene expression changes have amply been encountered in colorectal cancers (CRCs), but the extent at which CNAs affect gene expression, as well as their relevance for tumor development, are still poorly defined. Here we aimed at assessing the clinical relevance of these parameters in a 10 year follow-up study. METHODS: Tumors and normal adjacent colon mucosa, obtained at primary surgery from 21 CRC patients, were subjected to (i) high-resolution array CGH (a-CGH) for the detection of CNAs and (ii) microarray-based transcriptome profiling for the detection of gene expression (GE) changes...
October 5, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27683269/identification-of-genetic-variation-in-the-lncrna-hotair-associated-with-hpv16-related-cervical-cancer-pathogenesis
#9
Sweta Sharma Saha, Rahul Roy Chowdhury, Nidhu Ranjan Mondal, Biman Chakravarty, Tanmay Chatterjee, Sudipta Roy, Sharmila Sengupta
PURPOSE: Previously, over-expression of the long noncoding RNA (lncRNA) HOTAIR has been found to be associated with the invasive and metastatic capacities of several epithelial cancers, including cervical cancer (CaCx). Here, we aimed at identifying functionally relevant genetic variants that may be employed to differentiate between clinically distinct CaCx subtypes, i.e., those exhibiting high HOTAIR levels and molecular signatures of metastasis and those lacking such signatures in the presence of low HOTAIR expression levels...
September 28, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27678246/novel-strategies-for-targeting-leukemia-stem-cells-sounding-the-death-knell-for-blood-cancer
#10
Antonieta Chavez-Gonzalez, Babak Bakhshinejad, Katayoon Pakravan, Monica L Guzman, Sadegh Babashah
BACKGROUND: Cancer stem cells (CSCs), also known as tumor-initiating cells (TICs), are characterized by high self-renewal and multi-lineage differentiation capacities. CSCs are thought to play indispensable roles in the initiation, progression and metastasis of many types of cancer. Leukemias are thought to be initiated and maintained by a specific sub-type of CSC, the leukemia stem cell (LSC). An important feature of LSCs is their resistance to standard therapy, which may lead to relapse...
September 27, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27613548/are-disseminated-tumor-cells-in-bone-marrow-and-tumor-stroma-ratio-clinically-applicable-for-patients-undergoing-surgical-resection-of-primary-colorectal-cancer-the-leiden-mrd-study
#11
F J Vogelaar, G W van Pelt, A M van Leeuwen, J M Willems, R A E M Tollenaar, G J Liefers, W E Mesker
PURPOSE: Current TNM staging does not appropriately identify high-risk colorectal cancer (CRC) patients. The aim of this study was to evaluate whether the presence of disseminated tumor cells (DTCs) in the bone marrow (BM) and the presence of stroma in the primary tumor, i.e., the tumor-stroma ratio (TSR), in patients undergoing surgical resection of primary CRC provides information relevant for disease outcome. METHODS: Patients with primary CRC (n = 125), consecutively admitted for curative resection between 2001 and 2007, were included in the study...
September 9, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27480083/a-network-including-pu-1-vav1-and-mir-142-3p-sustains-atra-induced-differentiation-of-acute-promyelocytic-leukemia-cells-a-short-report
#12
Silvia Grassilli, Ervin Nika, Elisabetta Lambertini, Federica Brugnoli, Roberta Piva, Silvano Capitani, Valeria Bertagnolo
PURPOSE: Reduced expression of miR-142-3p has been found to be associated with the development of various subtypes of myeloid leukemia, including acute promyelocytic leukemia (APL). In APL-derived cells, miR-142-3p expression can be restored by all-trans retinoic acid (ATRA), which induces the completion of their maturation program. Here, we aimed to assess whether PU.1, essential for ATRA-induced gene transcription, regulates the expression of miR-142-3p in APL-derived cells and, based on the established cooperation between PU...
October 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27444787/ovarian-cancer-derived-ascitic-fluids-induce-a-senescence-dependent-pro-cancerogenic-phenotype-in-normal-peritoneal-mesothelial-cells
#13
Justyna Mikuła-Pietrasik, Paweł Uruski, Kinga Matuszkiewicz, Sebastian Szubert, Rafał Moszyński, Dariusz Szpurek, Stefan Sajdak, Andrzej Tykarski, Krzysztof Książek
PURPOSE: After the seeding ovarian cancer cells into the peritoneal cavity, ascitic fluid creates a microenvironment in which these cells can survive and disseminate. The exact nature of the interactions between malignant ascitic fluids and peritoneal mesothelial cells (HPMCs) in ovarian cancer progression has so far remained elusive. Here we assessed whether malignant ascitic fluids may promote the senescence of HPMCs and, by doing so, enhance the acquisition of their pro-cancerogenic phenotype...
October 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27572263/estrogen-receptor-expression-and-gene-promoter-methylation-in-non-small-cell-lung-cancer-a-short-report
#14
Xavier Tekpli, Vidar Skaug, Rita Bæra, David H Phillips, Aage Haugen, Steen Mollerup
PURPOSE: In the past, anomalous estrogen receptor (ER) regulation has been associated with various lung pathologies, but so far its involvement in lung cancer initiation and/or progression has remained unclear. Here, we aimed at assessing in vivo and in vitro ER expression and its possible epigenetic regulation in non-small cell lung cancer (NSCLC) samples and their corresponding normal tissues and cells. METHODS: ERα and ERβ gene expression levels were assessed using real time quantitative PCR (RT-qPCR), whereas ERα and ERβ gene promoter methylation levels were assessed using DNA bisulfite conversion followed by pyrosequencing...
August 29, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27562587/nf%C3%AE%C2%BAb-activation-demarcates-a-subset-of-hepatocellular-carcinoma-patients-for-targeted-therapy
#15
Vignesh Ramesh, Karthikeyan Selvarasu, Jaishree Pandian, Soundarajan Myilsamy, Chidambaranathan Shanmugasundaram, Kumaresan Ganesan
BACKGROUND: Hepatocellular carcinoma (HCC) is the fifth most common cancer and the third leading cause of cancer death worldwide. It is a heterogeneous disorder and >80 % of the tumors develop in patients with liver cirrhosis, resulting from chronic inflammation and/or fibrosis. Here, we set out to identify novel targets for HCC therapy and to define a subgroup of patients that might benefit most from it. METHODS: Cellular pathway activation profiling of 45 transcription factors in a HCC-derived cell line (HEP3B), in vitro analysis of NFκB reporter activity in additional HCC-derived cell lines and pathway-focused integrative analyses of publicly available primary HCC-derived expression profiling data (GSE6764, GSE9843, E-TABM-36 and E-TABM-292) were employed to reveal a role of NFκB in HCC development...
August 25, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27491556/wt1-msh6-gata5-and-pax5-as-epigenetic-oral-squamous-cell-carcinoma-biomarkers-a-short-report
#16
Ilda Patrícia Ribeiro, Francisco Caramelo, Francisco Marques, Ana Domingues, Margarida Mesquita, Leonor Barroso, Hugo Prazeres, Maria José Julião, Isabel Poiares Baptista, Artur Ferreira, Joana Barbosa Melo, Isabel Marques Carreira
PURPOSE: Oral squamous cell carcinoma (OSCC) is a frequently occurring aggressive malignancy with a heterogeneous clinical behavior. Based on the paucity of specific early diagnostic and prognostic biomarkers, which hampers the appropriate treatment and, ultimately the development of novel targeted therapies, we aimed at identifying such biomarkers through a genetic and epigenetic analysis of these tumors. METHODS: 93 primary OSCCs were subjected to DNA copy number alteration (CNA) and methylation status analyses using methylation-specific multiplex ligation-dependent probe amplification (MS-MPLA)...
August 4, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27480082/inactivation-of-the-lkb1-ampk-signaling-pathway-does-not-contribute-to-salivary-gland-tumor-development-a-short-report
#17
Natascha Cidlinsky, Giada Dogliotti, Tobias Pukrop, Rudolf Jung, Florian Weber, Michael P Krahn
PURPOSE: Activation of AMPK by the tumor suppressor LKB1 represents an essential gatekeeping step for cells under energetic stress to prevent their growth and proliferation by inhibiting mTOR activation, until the energy supply normalizes. The LKB1/AMPK pathway is frequently downregulated in various types of cancer, thereby uncoupling tumor cell growth and proliferation from energy supply. As yet, little information is available on the role of the LKB1/AMPK pathway in tumors derived from salivary gland tissues...
August 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27240826/weighted-gene-co-expression-network-analysis-reveals-key-genes-involved-in-pancreatic-ductal-adenocarcinoma-development
#18
Matteo Giulietti, Giulia Occhipinti, Giovanni Principato, Francesco Piva
PURPOSE: Pancreatic ductal adenocarcinoma (PDAC) is a highly aggressive malignancy. Up till now, the patient's prognosis remains poor which, among others, is due to the paucity of reliable early diagnostic biomarkers. In the past, candidate diagnostic biomarkers and therapeutic targets have been delineated from genes that were found to be differentially expressed in normal versus tumour samples. Recently, new systems biology approaches have been developed to analyse gene expression data, which may yield new biomarkers...
August 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27106722/high-glucose-and-insulin-enhance-upa-expression-ros-formation-and-invasiveness-in-breast-cancer-derived-cells
#19
Luis Antonio Flores-López, María Guadalupe Martínez-Hernández, Rubí Viedma-Rodríguez, Margarita Díaz-Flores, Luis Arturo Baiza-Gutman
BACKGROUND: Accumulating evidence indicates that type 2 diabetes is associated with an increased risk to develop breast cancer. This risk has been attributed to hyperglycemia, hyperinsulinemia and chronic inflammation. As yet, however, the mechanisms underlying this association are poorly understood. Here, we studied the effect of high glucose and insulin on breast cancer-derived cell proliferation, migration, epithelial-mesenchymal transition (EMT) and invasiveness, as well as its relationship to reactive oxygen species (ROS) production and the plasminogen activation system...
August 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27060060/non-coding-rnas-in-pancreatic-cancer-challenges-and-opportunities-for-clinical-application
#20
REVIEW
V Taucher, H Mangge, J Haybaeck
BACKGROUND: Pancreatic ductal adenocarcinoma (PDAC) is a lethal disease with a dismal prognosis for which new therapeutic strategies are desperately needed. Non-coding RNAs (ncRNAs), especially microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), may yield new therapeutic concepts for the treatment of PDAC. A vast number of miRNAs, including the well-studied miR-21, miR-155 and miR-34, has been shown to regulate PDAC growth, invasion and metastasis in vitro and in vivo by targeting members of key signaling pathways...
August 2016: Cellular Oncology (Dordrecht)
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