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Cellular Oncology (Dordrecht)

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https://www.readbyqxmd.com/read/28074387/epigenetic-sampling-effects-nephrectomy-modifies-the-clear-cell-renal-cell-cancer-methylome
#1
Christophe Van Neste, Alexander Laird, Fiach O'Mahony, Wim Van Criekinge, Dieter Deforce, Filip Van Nieuwerburgh, Thomas Powles, David J Harrison, Grant D Stewart, Tim De Meyer
PURPOSE: Currently, it is unclear to what extent sampling procedures affect the epigenome. Here, this phenomenon was evaluated by studying the impact of artery ligation on DNA methylation in clear cell renal cancer. METHODS: DNA methylation profiles between vascularised tumour biopsy samples and devascularised nephrectomy samples from two individuals were compared. The relevance of significantly altered methylation profiles was validated in an independent clinical trial cohort...
January 10, 2017: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/28054302/microrna-761-induces-aggressive-phenotypes-in-triple-negative-breast-cancer-cells-by-repressing-trim29-expression
#2
Guang-Cheng Guo, Jia-Xiang Wang, Ming-Li Han, Lian-Ping Zhang, Lin Li
PURPOSE: Despite advances that have been made in systemic chemotherapy, the prognosis of advanced triple-negative breast cancer (TNBC) patients is still poor. The identification of key factors governing TNBC development is considered imperative for the development of novel effective therapeutic approaches. Previously, it has been reported that microRNA (miR)-761 may act as either a tumor suppressor or as an oncogene in different types of cancer. Here, we aimed at assessing the biological role of this miRNA in TNBC...
January 4, 2017: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/28039610/cdkn2a-p53-mediated-antitumor-effect-of-lupeol-in-head-and-neck-cancer
#3
Sayantan Bhattacharyya, Vasanthakumar Sekar, Biswanath Majumder, Debapriya G Mehrotra, Samir Banerjee, Anup K Bhowmick, Neyaz Alam, Gautam K Mandal, Jaydip Biswas, Pradip K Majumder, Nabendu Murmu
PURPOSE: The tumor suppressor protein p53 is known to control cell cycle arrest and apoptosis. Lupeol is a phytochemical that has been found to induce apoptosis in different cancer types through the extrinsic pathway. As yet, however, its role in the induction of cell cycle arrest and apoptosis through the intrinsic pathway in head and neck cancer has not been investigated. Here, we aimed at understanding the mechanism underlying the antitumor effect of Lupeol in head and neck cancer...
December 30, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/28039609/elmo3-expression-indicates-a-poor-prognosis-in-head-and-neck-squamous-cell-carcinoma-a-short-report
#4
Lorenz Kadletz, Gregor Heiduschka, Robert Wiebringhaus, Elisabeth Gurnhofer, Ulana Kotowski, Georg Haymerle, Markus Brunner, Conor Barry, Lukas Kenner
PURPOSE: Previously, the engulfment and cell motility 3 (ELMO3) protein has been reported to be involved in cell migration and cytoskeletal remodeling. As of yet, nothing is known about the role of ELMO3 in head and neck squamous cell carcinoma (HNSCC). The purpose of this study was to asses ELMO3 expression in postoperatively irradiated HNSCC patients and to evaluate a possible correlation between this expression and patient survival. METHODS: 125 postoperatively irradiated HNSCC patients were included in this study...
December 30, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/28039608/hpip-promotes-epithelial-mesenchymal-transition-and-cisplatin-resistance-in-ovarian-cancer-cells-through-pi3k-akt-pathway-activation
#5
Suresh Bugide, Vijay Kumar Gonugunta, Vasudevarao Penugurti, Vijaya Lakshmi Malisetty, Ratna K Vadlamudi, Bramanandam Manavathi
PURPOSE: Hematopoietic PBX interacting protein (HPIP), a scaffold protein, is known to regulate the proliferation, migration and invasion in different cancer cell types. The aim of this study was to assess the role of HPIP in ovarian cancer cell migration, invasion and epithelial-mesenchymal transition (EMT), and to unravel the mechanism by which it regulates these processes. METHODS: HPIP expression was assessed by immunohistochemistry of tissue microarrays containing primary ovarian tumor samples of different grades...
December 30, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27981507/emerging-diagnostic-prognostic-and-therapeutic-biomarkers-for-ovarian-cancer
#6
REVIEW
Khalid El Bairi, Abdul Hafeez Kandhro, Adel Gouri, Wafaa Mahfoud, Noureddine Louanjli, Brahim Saadani, Said Afqir, Mariam Amrani
BACKGROUND: In spite of various treatment options currently available, ovarian cancer (OC) still remains a leading cause of death in women world-wide. Diagnosis at an early stage is one of the most important factors that determines survival. Current clinical diagnostic tools have, however, a limited efficacy in early OC detection. Therefore, there is a critical need for new (early) diagnostic biomarkers and tools. Through advances in genomic, proteomic and metabolomic techniques, several novel molecular OC biomarkers have recently been identified...
December 15, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27933466/microrna-145-modulates-epithelial-mesenchymal-transition-and-suppresses-proliferation-migration-and-invasion-by-targeting-sip1-in-human-cervical-cancer-cells
#7
Anusha Sathyanarayanan, Karthik Subramanian Chandrasekaran, Devarajan Karunagaran
PURPOSE: Previously, it has been reported that microRNA-145 (miR-145) is lowly expressed in human cervical cancers and that its putative tumour suppressive role may be attributed to epithelial-mesenchymal transition (EMT) regulation. Here, we aimed to assess whether miR-145 may affect EMT-associated markers/genes and suppress cervical cancer growth and motility, and to provide a mechanistic basis for these phenomena. METHODS: The identification of the SMAD-interacting protein 1 (SIP1) mRNA as putative miR-145 target was investigated using a 3' untranslated region (3'UTR) luciferase assay and Western blotting, respectively...
December 8, 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27900663/mir-152-down-regulation-is-associated-with-met-up-regulation-in-leiomyosarcoma-and-undifferentiated-pleomorphic-sarcoma
#8
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
#9
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
#10
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
#11
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
#12
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/27709558/dna-copy-number-alterations-gene-expression-changes-and-disease-free-survival-in-patients-with-colorectal-cancer-a-10-year-follow-up
#13
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...
December 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
#14
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...
December 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
#15
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...
December 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
#16
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...
December 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
#17
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...
December 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
#18
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)...
December 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27473273/the-functional-status-of-dna-repair-pathways-determines-the-sensitization-effect-to-cisplatin-in-non-small-cell-lung-cancer-cells
#19
Ping Chen, Jian Li, Yong-Chang Chen, Hai Qian, Yu-Jiao Chen, Jin-Yu Su, Min Wu, Ting Lan
PURPOSE: Cisplatin can cause a variety of DNA crosslink lesions including intra-strand and inter-strand crosslinks (ICLs), which are associated with the sensitivity of cancer cells to cisplatin. Here, we aimed to assess the contribution of the Fanconi anemia (FA), homologous recombination (HR) and nucleotide excision repair (NER) pathways to cisplatin resistance in non-small cell lung cancer (NSCLC)-derived cells. METHODS: The expression of FA, HR and NER pathway-associated genes was assessed by RT-qPCR and Western blotting...
December 2016: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/27279102/the-genetic-heterogeneity-of-colorectal-cancer-predisposition-guidelines-for-gene-discovery
#20
REVIEW
M M Hahn, R M de Voer, N Hoogerbrugge, M J L Ligtenberg, R P Kuiper, A Geurts van Kessel
BACKGROUND: Colorectal cancer (CRC) is a cumulative term applied to a clinically and genetically heterogeneous group of neoplasms that occur in the bowel. Based on twin studies, up to 45 % of the CRC cases may involve a heritable component. Yet, only in 5-10 % of these cases high-penetrant germline mutations are found (e.g. mutations in APC and DNA mismatch repair genes) that result in a familial aggregation and/or an early onset of the disease. Genome-wide association studies have revealed that another ~5 % of the CRC cases may be explained by a cumulative effect of low-penetrant risk factors...
December 2016: Cellular Oncology (Dordrecht)
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