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Browsing by Subject "Gene expression regulation"

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    • Article  

      Cancer of unknown primary site: Missing primary or missing biology? 

      Pentheroudakis, George; Briassoulis, E. Ch; Pavlidis, Nicholas (2007)
      Cancer of unknown primary site (CUP) ranks as the fourth most common cause of cancer deaths and represents both a diagnostic and a management challenge. In CUP, the regression or dormancy of the primary tumor, the development ...

    • Article  

      Clinicopathological study of metallothionein immunohistochemical expression, in benign, borderline and malignant ovarian epithelial tumors 

      Zagorianakou, N.; Stefanou, D. G.; Makrydimas, G.; Zagorianakou, P.; Briassoulis, E. Ch; Karavasilis, V.; Pavlidis, Nicholas; Agnantis, Niki J. (2006)
      Metallothioneins (MTs) are a family of cystein-rich metal-binding proteins, which are expressed in normal cells during fetal and postnatal life but also in a variety of human neoplasms. MT expression in human tumors has ...

    • Article  

      Depression in cancer: The many biobehavioral pathways driving tumor progression 

      Bortolato, B.; Hyphantis, T.; Valpione, S.; Perini, G.; Maes, M.; Morris, G.; Kubera, M.; Köhler, C. A.; Fernandes, B. S.; Stubbs, B.; Pavlidis, Nicholas; Carvalho, A. F. (2017)
      Major Depressive Disorder (MDD) is common among cancer patients, with prevalence rates up to four-times higher than the general population. Depression confers worse outcomes, including non-adherence to treatment and increased ...

    • Conference Object  

      Discovering genetic polymorphism associated with gene expression levels across the whole genome 

      Antoniades, Athos; Kalvari, Ioanna; Pattichis, Constantinos S.; Jones, N.; Matthews, P. M.; Domenici, E.; Muglia, P. (2009)
      Genetic differences have been shown to contribute to gene expression variability. A complete evaluation of the associations between a whole genome scan with 550k Single Nucleotide Polymorphisms (SNPs) and 54k detectable ...

    • Article  

      Global microRNA profiling in favorable prognosis subgroups of cancer of unknown primary (CUP) demonstrates no significant expression differences with metastases of matched known primary tumors 

      Pentheroudakis, George; Spector, Y.; Krikelis, D.; Kotoula, V.; Meiri, E.; Malamou-Mitsi, Vassiliki D.; Fountzilas, George; Sanden, M.; Pavlidis, Nicholas; Benjamin, H.; Aharonov, R. (2013)
      No data exist on biologic differences between Cancer of unknown primary (CUP) and metastatic solid tumors of known primary site. We assigned a primary tissue of origin in 40 favorable CUP patients (A: serous peritoneal ...

    • Article  

      Global profiling of EGFR gene mutation, amplification, regulation and tissue protein expression in unknown primary carcinomas: To target or not to target? 

      Dova, L.; Pentheroudakis, George; Georgiou, I.; Malamou-Mitsi, Vassiliki D.; Vartholomatos, G.; Fountzilas, George; Kolaitis, N.; Kitsou, E.; Pavlidis, Nicholas (2007)
      Introduction: Epidermal growth factor receptor (EGFR) signalling contributes to malignant transformation and survival. We studied molecular predictors of benefit from EGFR-modulating therapies in patients with cancer of ...

    • Article  

      Intratumoral CRH modulates immuno-escape of ovarian cancer cells through FasL regulation 

      Minas, V.; Rolaki, A.; Kalantaridou, S. N.; Sidiropoulos, J.; Mitrou, Sotirios; Petsas, G.; Jeschke, U.; Paraskevaidis, E.; Fountzilas, George; Chrousos, George P.; Pavlidis, Nicholas; Makrigiannakis, A. (2007)
      Although corticotropin-releasing hormone (CRH) and Fas ligand (FasL) have been documented in ovarian carcinoma, a clear association with tumour progression and immuno-escape has not been established. FasL plays an important ...

    • Article  

      Overexpression of C-myc, ras and C-erb B-2 oncoproteins in carcinoma of unknown primary origin 

      Pavlidis, Nicholas; Briassoulis, E. Ch; Bai, M. C.; Fountzilas, George; Agnantis, Niki J. (1995)
      The role of oncogenes in carcinoma of unknown primary site (CUP) has not yet been elucidated. In the present study the expression of the c-myc p62, ras p21 and c-erb B p185 oncoproteins were studied by a 3-step immunoperoxidase ...

    • Article  

      Perspectives for targeted therapies in cancer of unknown primary site 

      Pentheroudakis, George; Pavlidis, Nicholas (2006)
      Cancer of unknown primary site (CUP) ranks as the fourth most common cause of cancer deaths. Regression of the primary, early development of systemic metastases and resistance to therapy are hallmarks of this heterogeneous ...

    • Article  

      Prognostic Significance of ESR1 Gene Amplification, mRNA/Protein Expression and Functional Profiles in High-Risk Early Breast Cancer: A Translational Study of the Hellenic Cooperative Oncology Group (HeCOG) 

      Pentheroudakis, George; Kotoula, V.; Eleftheraki, A. G.; Tsolaki, E.; Wirtz, R. M.; Kalogeras, K. T.; Batistatou, Anna; Bobos, M.; Dimopoulos, M. A.; Timotheadou, E.; Gogas, H.; Christodoulou, C.; Papadopoulou, K.; Efstratiou, I.; Scopa, C. D.; Papaspirou, I.; Vlachodimitropoulos, D.; Linardou, H.; Samantas, E.; Pectasides, Dimitrios; Pavlidis, Nicholas; Fountzilas, George (2013)
      Background:Discrepant data have been published on the incidence and prognostic significance of ESR1 gene amplification in early breast cancer.Patients and Methods:Formalin-fixed paraffin-embedded tumor blocks were collected ...

    • Article  

      Prognostic significance of RACGAP1 mRNA expression in high-risk early breast cancer: A study in primary tumors of breast cancer patients participating in a randomized Hellenic Cooperative Oncology Group trial 

      Pliarchopoulou, K.; Kalogeras, K. T.; Kronenwett, R.; Wirtz, R. M.; Eleftheraki, A. G.; Batistatou, Anna; Bobos, M.; Soupos, N.; Polychronidou, G.; Gogas, H.; Samantas, E.; Christodoulou, C.; Makatsoris, T.; Pavlidis, Nicholas; Pectasides, Dimitrios; Fountzilas, George (2013)
      Purpose: RACGAP1 is a Rac GTPase-activating protein involved in cell growth regulation, cell transformation and metastasis. The aim of the present study was to explore the prognostic and/or predictive significance of RACGAP1 ...

    • Article  

      Prognostic significance of the deleted in colorectal cancer gene protein expression in high-risk resected gastric carcinoma 

      Bamias, A. T.; Bai, M. C.; Agnantis, Niki J.; Michael, M. C.; Alamanos, Y. P.; Stefanaki, S. V.; Razi, E. D.; Skarlos, Dimosthenis V.; Kappas, A. M.; Pavlidis, Nicholas (2003)
      The deleted in colorectal cancer (DCC) gene is a candidate tumor suppressor gene that may be associated with differentiation and proliferation of normal cells. Loss of heterozygosity (LOH) of 18q, where the gene is located, ...

    • Article  

      Prognostic utility of β-tubulin isotype III and correlations with other molecular and clinicopathological variables in patients with early breast cancer: A translational Hellenic Cooperative Oncology Group (HeCOG) study 

      Pentheroudakis, George; Batistatou, Anna; Kalogeras, K. T.; Kronenwett, R.; Wirtz, R. M.; Bournakis, E.; Eleftheraki, A. G.; Pectasides, Dimitrios; Bobos, M.; Papaspirou, I.; Kamina, S.; Gogas, H.; Koutras, A. K.; Pavlidis, Nicholas; Fountzilas, George (2011)
      We evaluated the prognostic and predictive utility of β-tubulin isotype III (TUBB3) tumour gene transcription in early breast cancer patients enrolled in a randomised study. Quantitative reverse transcription-polymerase ...

    • Article  

      Robust control of uncertain context-sensitive probabilistic Boolean networks 

      Denic, S. Z.; Vasic, B.; Charalambous, Charalambos D.; Palanivelu, R. (2009)
      Uncertainty is an intrinsic phenomenon in control of gene regulatory networks (GRNs). The presence of uncertainty is related to impreciseness of GRN models due to: (1) Errors caused by imperfection of measurement devices ...

    • Article  

      A study of gene expression markers for predictive significance for bevacizumab benefit in patients with metastatic colon cancer: A translational research study of the Hellenic Cooperative Oncology Group (HeCOG) 

      Pentheroudakis, George; Kotoula, V.; Fountzilas, E.; Kouvatseas, G.; Basdanis, G.; Xanthakis, I.; Makatsoris, T.; Charalambous, E.; Papamichael, D.; Samantas, E.; Papakostas, P.; Bafaloukos, Dimitrios; Razi, E. D.; Christodoulou, C.; Varthalitis, I.; Pavlidis, Nicholas; Fountzilas, George (2014)
      Background: Bevacizumab, an antibody neutralizing Vascular Endothelial Growth Factor (VEGF), is licensed for the management of patients with advanced colon cancer. However, tumor biomarkers identifying the molecular tumor ...

    • Article  

      Triple-negative phenotype is of adverse prognostic value in patients treated with dose-dense sequential adjuvant chemotherapy: A translational research analysis in the context of a Hellenic Cooperative Oncology Group (HeCOG) randomized phase III trial 

      Skarlos, P.; Christodoulou, C.; Kalogeras, K. T.; Eleftheraki, A. G.; Bobos, M.; Batistatou, Anna; Valavanis, C.; Tzaida, O.; Timotheadou, E.; Kronenwett, R.; Wirtz, R. M.; Kostopoulos, I.; Televantou, D.; Koutselini, E.; Papaspirou, I.; Papadimitriou, C.; Pectasides, Dimitrios; Gogas, H.; Aravantinos, Gerasimos; Pavlidis, Nicholas; Arapantoni, P.; Skarlos, Dimosthenis V.; Fountzilas, George (2012)
      Purpose: It is well recognized that breast cancer is a heterogeneous disease. The purpose of the current study was to classify patients according to the immunohistochemical phenotype of their tumors in an effort to evaluate ...

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