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Cellular Oncology (Dordrecht)

Pelin Balcik-Ercin, Metin Cetin, Irem Yalim-Camci, Gorkem Odabas, Nurettin Tokay, A Emre Sayan, Tamer Yagci
BACKGROUND: ZEB2 is a transcriptional repressor that regulates epithelial-to-mesenchymal transition (EMT) through binding to bipartite E-box motifs in gene regulatory regions. Despite the abundant presence of E-boxes within the human genome and the multiplicity of pathophysiological processes regulated during ZEB2-induced EMT, only a small fraction of ZEB2 targets has been identified so far. Hence, we explored genome-wide ZEB2 binding by chromatin immunoprecipitation-sequencing (ChIP-seq) under endogenous ZEB2 expression conditions...
March 7, 2018: Cellular Oncology (Dordrecht)
Noemi Eiro, Lucía González, Anxo Martínez-Ordoñez, Belen Fernandez-Garcia, Luis O González, Sandra Cid, Francisco Dominguez, Román Perez-Fernandez, Francisco J Vizoso
PURPOSE: It has been reported that stromal cell features may affect the clinical outcome of breast cancer patients. Cancer associated fibroblasts (CAFs) represent one of the most abundant cell types within the breast cancer stroma. Here, we aimed to explore the influence of CAFs on breast cancer gene expression, as well as on invasion and angiogenesis. METHODS: qRT-PCR was used to evaluate the expression of several cancer progression related genes (S100A4, TGFβ, FGF2, FGF7, PDGFA, PDGFB, VEGFA, IL-6, IL-8, uPA, MMP2, MMP9, MMP11 and TIMP1) in the human breast cancer-derived cell lines MCF-7 and MDA-MB-231, before and after co-culture with CAFs...
March 1, 2018: Cellular Oncology (Dordrecht)
Ajda Coker Gurkan, Elif Damla Arisan, Pinar Obakan Yerlikaya, Halime Ilhan, Narcin Palavan Unsal
PURPOSE: One of the recently developed polyamine (PA) analogues, N1 ,N11 -diethylnorspermine (DENSpm), has been found to act as an apoptotic inducer in melanoma, breast, prostate and colon cancer cells. Also, its potential to induce autophagy has been established. Unfolded protein responses and starvation of amino acids are known to trigger autophagy. As yet, however, the molecular mechanism underlying PA deficiency-induced autophagy is not fully clarified. Here, we aimed to determine the apoptotic effect of DENSpm after autophagy inhibition by 3-methyladenine (3-MA) or siRNA-mediated Beclin-1 silencing in colon cancer cells...
February 28, 2018: Cellular Oncology (Dordrecht)
Eroje M Ahmed, Gagori Bandopadhyay, Beth Coyle, Anna Grabowska
PURPOSE: Glioblastoma (GBM) is the commonest brain tumour in adults. A sub-population of cells within these tumours, known as cancer stem cells (CSCs), is thought to mediate their chemo-/radiotherapy resistance. CD133 is a cell surface marker that is used to identify and isolate GBM CSCs. However, its functional significance, as well as the relevant microenvironment in which to study CD133, have so far remained unknown. Here, we examined the effect of hypoxia on the expression of CD133 and on that of the hypoxia-related factors HIF-1α and HIF-2α, and the potential functional significance of CD133 expression on the acquisition of chemo-resistance by GBM cells...
February 28, 2018: Cellular Oncology (Dordrecht)
Masoumeh Mehdipour, Minoo Shahidi, Soheila Manifar, Soudeh Jafari, Fatemeh Mashhadi Abbas, Mahmood Barati, Hamed Mortazavi, Mohammad Shirkhoda, Amir Farzanegan, Zahra Elmi Rankohi
BACKGROUND: Oral lichen planus (OLP), a relatively common chronic inflammatory disease of the oral mucosa, is considered to be a premalignant disorder of the oral cavity. Previously, several biomarkers have been tested for their diagnostic potential. Here, we aimed to investigate the diagnostic potential of four miRNAs, miR-21, -125a, -31 and -200a, known to be involved in oral squamous cell carcinoma (OSCC) development, in the saliva of OLP patients as also their putative relation to OSCC development in these patients...
February 26, 2018: Cellular Oncology (Dordrecht)
Ioannis A Voutsadakis
BACKGROUND: The interplay between the immune system and cancer cells has come to the forefront of cancer therapeutics, with novel immune blockade inhibitors being approved for the treatment of an increasing list of cancers. However, the majority of cancer patients still display or develop resistance to these promising drugs. It is possible that cancer stem cells (CSCs) are contributing to this therapeutic resistance. Although CSCs usually represent a small percentage of the total number of cancer cells, they are endowed with the ability of self-renewal and to produce differentiated progeny...
February 22, 2018: Cellular Oncology (Dordrecht)
Rosalba D'Alessandro, Maria Grazia Refolo, Catia Lippolis, Nicola Carella, Caterina Messa, Aldo Cavallini, Brian Irving Carr
PURPOSE: Emerging evidence indicates that combining Sorafenib with vitamin K1 (VK1) may result in a synergistic inhibition of hepatocellular carcinoma (HCC) cell migration and proliferation. Despite this synergy, its benefits may be limited due to drug resistance resulting from cross-talk with the tumor microenvironment. Insulin-like growth factor-1 (IGF1) signaling acts as an important modulator of HCC cell growth, motility and drug resistance. Therefore, we aimed to explore the effects of Sorafenib in combination with VK1 and/or IGF1-R antagonists on HCC cells...
February 22, 2018: Cellular Oncology (Dordrecht)
Roberta Soares Faccion, Paula Sabbo Bernardo, Giselle Pinto Faria de Lopes, Leonardo Soares Bastos, Cristina Lordello Teixeira, José Antonio de Oliveira, Priscila Valverde Fernandes, Luiz Gustavo Dubois, Leila Chimelli, Raquel Ciuvalschi Maia
PURPOSE: Diffuse astrocytic tumors are the most frequently occurring primary central nervous system (CNS) tumors. Their histological sub-classification into diffuse astrocytoma (DA), anaplastic astrocytoma (AA) and glioblastoma (GB) is challenging and the available prognostic factors are limited to age and tumor subtype. Biomarkers that may improve the histological sub-classification and/or serve as prognostic factors are, therefore, urgently needed. The relationship between survivin and p53 in diffuse astrocytic tumor progression and survival is currently unclear...
January 26, 2018: Cellular Oncology (Dordrecht)
Yu-Jie Dai, Yi-Bo Qiu, Rong Jiang, Man Xu, Ling-Yao Liao, George G Chen, Zhi-Min Liu
PURPOSE: Papillary thyroid cancer (PTC) is more common in women than in men. It has been suggested that estrogen may be involved in its development, as has previously been shown for breast, endometrial and ovarian cancer. The purpose of this study was to assess correlations between the expression of the estrogen receptor alpha36 (ERα36) and the glucose regulated proteins GRP78 and GRP94 (chaperones involved in glycoprotein folding) and various PTC clinicopathological features, as well as to evaluate the potential usefulness of these three potential oncogenic proteins in the prediction of aggressive PTC behavior...
January 24, 2018: Cellular Oncology (Dordrecht)
Katarzyna Starska, Ewa Forma, Iwona Lewy-Trenda, Olga Stasikowska-Kanicka, Michał Skóra, Magdalena Bryś
PURPOSE: Aberrant fibroblast growth factor receptor (FGFR) expression is thought to contribute to the development of many types of cancer. As yet, however, their impact on the course and prognosis of head and neck cancer remains to be determined. Here, we aimed to investigate the effects of expression of the FGFR family members FGFR1 and FGFR3, as well as their downstream PI3K/AKT signal-regulated kinases, on the aggressiveness and prognosis of laryngeal cancer. METHODS: In total 137 surgically removed squamous cell laryngeal cancer (SCLC) and 100 matched non-cancerous laryngeal mucosa (NCLM) samples were assessed for mRNA expression using quantitative real-time PCR...
January 3, 2018: Cellular Oncology (Dordrecht)
Seyyed Mehdi Jafari, Hamid Reza Joshaghani, Mojtaba Panjehpour, Mahmoud Aghaei
PURPOSE: It has been reported that cancer stem cells (CSCs) may play a crucial role in the development, recurrence and metastasis of breast cancer. Targeting signaling pathways in CSCs is considered to be a promising strategy for the treatment of cancer. Here, we investigated the role of the A2B adenosine receptor (A2BAR) and its associated signaling pathways in governing the proliferation and viability of breast cancer cell line derived CSCs. METHODS: CSCs were isolated from the breast cancer cell lines MCF-7 and MDA-MB-231 using a mammosphere assay...
February 2018: Cellular Oncology (Dordrecht)
Lubna Wasim, Madhu Chopra
PURPOSE: Various combinations of drugs may be effective in the treatment of different types of cancer. Previously, we have shown that combinations of the histone deacetylase inhibitor panobinostat and the topoisomerase inhibitors topotecan or etoposide act synergistically, but the underlying mode of action has remained unknown. Here, we aimed at uncovering the mechanisms underlying this synergism. METHODS: The effects of (combinations of) panobinostat and topotecan or etoposide on cervical cancer-derived HeLa and SiHa cells were assessed using morphological evaluations, scratch wound healing assays, cell cycle analyses, AO/EB staining assays, Annexin V/PI staining assays, reactive oxygen species (ROS) and mitochondrial membrane potential measurements and Western blotting...
December 19, 2017: Cellular Oncology (Dordrecht)
Souvick Roy, Madhabananda Kar, Shomereeta Roy, Arka Saha, Swatishree Padhi, Birendranath Banerjee
BACKGROUND: Head and neck squamous cell carcinoma (HNSCC) is one of the most common types of cancer in India with high incidence and rapid recurrence rates. Here, we aimed to investigate the role of β-catenin, a developmental pathway gene, in HNSCC therapy resistance, DNA damage response, recurrence and prognosis. METHODS: In total 80 HNSCC samples were included. Western blot, immunohistochemistry and qRT-PCR analyses were performed to assess β-catenin expression in the cut margin and tumor areas of each sample...
December 14, 2017: Cellular Oncology (Dordrecht)
Emma Camacho-Urkaray, Jorge Santos-Juanes, Francisco Borja Gutiérrez-Corres, Beatriz García, Luis M Quirós, Isabel Guerra-Merino, José Javier Aguirre, Iván Fernández-Vega
PURPOSE: Glioblastoma (GBM) ranks among the most challenging cancers to treat and there is an urgent need for clinically relevant prognostic and diagnostic biomarkers. Here, we set out to investigate the expression of eight proteins (bcl-2, cyclin D1, p16, p21, p27, p53, Sox11 and WT1) in GBM with the specific aim to establish immunohistochemistry cut-off points with clinical relevance. METHODS: Immunohistochemistry (IHC) was used to examine protein expression in 55 surgical GBM specimens using H-scores, and IHC cut-off points were established using the Cutoff Finder web platform...
December 7, 2017: Cellular Oncology (Dordrecht)
Mauro Montalbano, Cristiana Rastellini, Joshua T McGuire, Janika Prajapati, Ali Shirafkan, Renza Vento, Luca Cicalese
BACKGROUND: Recently, Glypican-3 (GPC3) has been identified as a potential hepatocellular carcinoma (HCC) diagnostic and/or therapeutic target. GPC3 has been found to be up-regulated in HCC and to be absent in normal and cirrhotic liver. As yet, however, the molecular characteristics of GPC3 and its role in HCC cell physiology and development are still undefined. METHODS: Human hepatocyte cultures were established from 10 HCC patients. Additional liver samples were obtained from 5 patients without cirrhosis and/or HCC...
December 4, 2017: Cellular Oncology (Dordrecht)
B Weixler, F Renetseder, I Facile, N Tosti, E Cremonesi, A Tampakis, T Delko, S Eppenberger-Castori, A Tzankov, G Iezzi, C Kettelhack, S D Soysal, U von Holzen, G C Spagnoli, L Terracciano, L Tornillo, Raoul A Droeser, S Däster
BACKGROUND: The CXCL12-CXCR4 chemokine axis plays an important role in cell trafficking as well as in tumor progression. In colorectal cancer (CRC), the chemokine receptor CXCR4 has been shown to be an unfavorable prognostic factor in some studies, however, the role of its activated (phosphorylated) form, pCXCR4, has not yet been evaluated. Here, we aimed to investigate the prognostic value of CXCR4 and pCXCR4 in a large cohort of CRC patients. PATIENTS AND METHODS: A tissue microarray (TMA) of 684 patient specimens of primary CRCs was analyzed by immunohistochemistry (IHC) for the expression of CXCR4 and pCXCR4 by tumor cells and tumor-infiltrating immune cells (TICs)...
December 2017: Cellular Oncology (Dordrecht)
Sarita Das, Anmada Nayak, Sumit Siddharth, Deepika Nayak, Satya Narayan, Chanakya Nath Kundu
PURPOSE: Previously, we reported that quinacrine (QC) may cause apoptosis in breast and colon cancer cells by activating the death receptor 5 (DR5), resulting in autophagic cell death through p21 modulation. Here, we systematically evaluated the combined role of p21 and DR5 and their crosstalk in QC-mediated autophagy and apoptosis in breast cancer cells using in vitro and in vivo models. METHODS: Multiple breast cancer-derived cell lines (MCF-7, ZR-75-1, T47D, MDA-MB-231 and MCF-10A-Tr) and a mouse xenograft model were used...
December 2017: Cellular Oncology (Dordrecht)
Gyula Kovacs, Lehel Peterfi, Nelli Farkas, Andras Javorhazy, Csaba Pusztai, Arpad Szanto
BACKGROUND: The mortality of conventional renal cell carcinoma (RCC) correlates directly with the presence or postoperative development of metastases. The aim of this study was to identify new markers associated with the postoperative progression of conventional RCC. METHODS: Tissue microarrays (TMA) of conventional RCC from a cohort of 414 patients were analysed by immunohistochemistry for expression of the lipopolysaccharide binding protein (LBP), which was identified as a candidate biomarker through Affymetrix U133 Plus 2...
December 2017: Cellular Oncology (Dordrecht)
Betul Taskoparan, Esin Gulce Seza, Secil Demirkol, Sinem Tuncer, Milan Stefek, Ali Osmay Gure, Sreeparna Banerjee
PURPOSE: Aldo-keto reductases (including AKR1B1 and AKR1B10) constitute a family of oxidoreductases that have been implicated in the pathophysiology of diabetes and cancer, including colorectal cancer (CRC). Available data indicate that, despite their similarities in structure and enzymatic functions, their roles in CRC may be divergent. Here, we aimed to determine the expression and functional implications of AKR1B1 and AKR1B10 in CRC. METHODS: AKR1B1 and AKR1B10 gene expression levels were analyzed using publicly available microarray data and ex vivo CRC-derived cDNA samples...
December 2017: Cellular Oncology (Dordrecht)
Worapong Khaodee, Nichanan Inboot, Suruk Udomsom, Warunee Kumsaiyai, Ratchada Cressey
PURPOSE: Glucosidase II plays a major role in regulating the post-translational modification of N-linked glycoproteins. Previously, we found that the beta subunit of glucosidase II (GluIIβ) levels are significantly increased in lung carcinoma tissues, indicating a potential role in lung tumorigenesis. Here, we investigated the role of GluIIβ in the regulation of autophagy and apoptosis in lung carcinoma- and immortalized human bronchial epithelial-derived cells. METHODS: A selective glucosidase II inhibitor, bromoconduritol, was used to inhibit GluII enzyme activity and a siRNA-based technology was used to suppress the expression of the GluIIβ encoding gene PRKCSH in lung carcinoma cells differing in p53 status...
December 2017: Cellular Oncology (Dordrecht)
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