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https://www.readbyqxmd.com/read/29598951/overexpression-of-pik3ca-in-head-and-neck-squamous-cell-carcinoma-is-associated-with-poor-outcome-and-activation-of-the-yap-pathway
#1
Ramón García-Escudero, Carmen Segrelles, Marta Dueñas, María Pombo, Claudio Ballestín, Marina Alonso-Riaño, Pablo Nenclares, Roberto Álvarez-Rodríguez, Gregorio Sánchez-Aniceto, Ana Ruíz-Alonso, José Luis López-Cedrún, Jesús M Paramio, Corina Lorz
OBJECTIVES: Phosphatidylinositol 3-kinase catalytic subunit alpha (PIK3CA) is commonly altered in many human tumors, leading to the activation of p110α enzymatic activity that stimulates growth factor-independent cell growth. PIK3CA alterations such as mutation, gene amplification and overexpression are common in head and neck squamous cell carcinoma (HNSCC) and. We aim to explore how these alterations and clinical outcome are associated, as well as the molecular mechanisms involved...
April 2018: Oral Oncology
https://www.readbyqxmd.com/read/29575229/differential-expression-and-prognostic-value-of-long-non-coding-rna-in-hpv-negative-head-and-neck-squamous-cell-carcinoma
#2
Sulsal-Ul Haque, Liang Niu, Damaris Kuhnell, Jacob Hendershot, Jacek Biesiada, Wen Niu, Matthew C Hagan, Karl T Kelsey, Keith A Casper, Trisha M Wise-Draper, Mario Medvedovic, Scott M Langevin
BACKGROUND: Long non-coding RNA (lncRNA) has emerged as a new avenue of interest due to its various biological functions in cancer. Abnormal expression of lncRNA has been reported in other malignancies but has been understudied in head and neck squamous cell carcinoma (HNSCC). METHODS: The lncRNA expression was interrogated via quantitative real-time polymerase chain reaction (qRT-PCR) array for 19 human papillomavirus (HPV)-negative HNSCC tumor-normal pairs. The Cancer Genome Atlas (TCGA) was used to validate these results...
March 25, 2018: Head & Neck
https://www.readbyqxmd.com/read/29556360/long-non-coding-mir205hg-depletes-hsa-mir-590-3p-leading-to-unrestrained-proliferation-in-head-and-neck-squamous-cell-carcinoma
#3
Silvia Di Agostino, Fabio Valenti, Andrea Sacconi, Giulia Fontemaggi, Matteo Pallocca, Claudio Pulito, Federica Ganci, Paola Muti, Sabrina Strano, Giovanni Blandino
Over 70% of head & neck squamous cell carcinoma (HNSCC) patients carry TP53 oncogenic mutations. Here we studied the role of specific tumor-derived mutant p53 proteins in the aberrant transcription of long non-coding (lnc) MIR205HG gene in head and neck cancer cells. Methods: To understand the role of lncMIR205HG, that we showed to be transcriptionally regulated by mutant p53 in HNSCC, we have employed siRNA and shRNA in CAL27 and FaDu HNSCC cell lines to suppress p53 gene expression in ChIP assays and RT-qPCR...
2018: Theranostics
https://www.readbyqxmd.com/read/29538372/dek-overexpression-in-murine-epithelia-increases-overt-esophageal-squamous-cell-carcinoma-incidence
#4
Marie C Matrka, Katherine A Cimperman, Sarah R Haas, Geraldine Guasch, Lisa A Ehrman, Ronald R Waclaw, Kakajan Komurov, Adam Lane, Kathryn A Wikenheiser-Brokamp, Susanne I Wells
Esophageal cancer occurs as either squamous cell carcinoma (ESCC) or adenocarcinoma. ESCCs comprise almost 90% of cases worldwide, and recur with a less than 15% five-year survival rate despite available treatments. The identification of new ESCC drivers and therapeutic targets is critical for improving outcomes. Here we report that expression of the human DEK oncogene is strongly upregulated in esophageal SCC based on data in the cancer genome atlas (TCGA). DEK is a chromatin-associated protein with important roles in several nuclear processes including gene transcription, epigenetics, and DNA repair...
March 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29497144/the-molecular-landscape-of-head-and-neck-cancer
#5
REVIEW
C René Leemans, Peter J F Snijders, Ruud H Brakenhoff
Head and neck squamous cell carcinomas (HNSCCs) arise in the mucosal linings of the upper aerodigestive tract and are unexpectedly heterogeneous in nature. Classical risk factors are smoking and excessive alcohol consumption, and in recent years, the role of human papillomavirus (HPV) has emerged, particularly in oropharyngeal tumours. HPV-induced oropharyngeal tumours are considered a separate disease entity, which recently has manifested in an adapted prognostic staging system while the results of de-intensified treatment trials are awaited...
March 2, 2018: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/29496049/sting-activation-enhances-cetuximab-mediated-nk-cell-activation-and-dc-maturation-and-correlates-with-hpv-status-in-head-and-neck-cancer
#6
Shanhong Lu, Fernando Concha-Benavente, Gulidanna Shayan, Raghvendra M Srivastava, Sandra P Gibson, Lin Wang, William E Gooding, Robert L Ferris
OBJECTIVES: The intracellular DNA sensor stimulator of interferon genes (STING) has recently been shown to play a vital role in anti-viral and anti-tumor immune responses stimulating cytokine production. While human papillomavirus (HPV) is a causative agent for a subset of head and neck squamous cell carcinoma (HNSCC) with unique etiology and clinical outcome, how the STING pathway is regulated in a virus-induced tumor microenvironment is not well understood. Since STING inactivation likely reflects immunoescape via innate immunity, we hypothesized that its restoration would improve efficacy of the immune modulatory monoclonal antibody (mAb), cetuximab...
March 2018: Oral Oncology
https://www.readbyqxmd.com/read/29491058/squamous-cell-carcinoma-antigen-encoding-genes-serpinb3-b4-as-potentially-useful-markers-for-the-stratification-of-hnscc-tumours
#7
Zuzana Saidak, Mony Chenda Morisse, Denis Chatelain, Chloé Sauzay, Aline Houessinon, Nelly Guilain, Marion Soyez, Bruno Chauffert, Stéphanie Dakpé, Antoine Galmiche
BACKGROUND/AIM: The squamous cell carcinoma antigen (SCCA), encoded by the genes SERPINB3/B4, is a tumour marker produced by head and neck squamous cell carcinoma (HNSCC). We aimed to examine SERPINB3/B4 mRNA levels and its clinical significance in the therapeutic context. MATERIALS AND METHODS: We retrieved mRNA expression levels, clinical, pathological and genomic data for 520 HNSCC from The Cancer Genome Atlas (TCGA). RESULTS: HNSCC tumours express high levels of SERPINB3/B4 mRNA...
March 2018: Anticancer Research
https://www.readbyqxmd.com/read/29477933/immunological-network-analysis-in-hpv-associated-head-and-neck-squamous-cancer-and-implications-for-disease-prognosis
#8
Xiaohang Chen, Bingqing Yan, Huihuang Lou, Zhenji Shen, Fangjia Tong, Aixia Zhai, Lanlan Wei, Fengmin Zhang
Human papillomavirus-positive (HPV+) head and neck squamous cell cancer (HNSCC) exhibits a better prognosis than HPV-negative (HPV-) HNSCC. This difference may in part be due to enhanced immune activation in the HPV+ HNSCC tumor microenvironment. To characterize differences in immune activation between HPV+ and HPV- HNSCC tumors, we identified and annotated differentially expressed genes based upon mRNA expression data from The Cancer Genome Atlas (TCGA). Immune network between immune cells and cytokines was constructed by using single sample Gene Set Enrichment Analysis and conditional mutual information...
February 22, 2018: Molecular Immunology
https://www.readbyqxmd.com/read/29473326/prediction-of-radiotherapy-response-with-a-5-microrna-signature-based-nomogram-in-head-and-neck-squamous-cell-carcinoma
#9
Lin Chen, Yihui Wen, Jingwei Zhang, Wei Sun, Vivian W Y Lui, Yi Wei, Fenghong Chen, Weiping Wen
Radiotherapy is unlikely to benefit all patients with head and neck squamous cell carcinoma (HNSCC). Therefore, novel method is warranted to predict the radiotherapy response. Our study aimed to construct a microRNA (miRNA)-based nomogram to predict clinical outcomes of patients with HNSCC receiving radiotherapy. We screened out 56 differential miRNAs by analyzing 44 paired tumor and adjacent normal samples miRNA expression profiles from The Cancer Genome Atlas (TCGA). A total of 307 patients with HNSCC receiving adjuvant radiotherapy were randomly divided into a training set (n = 154) and a validation set (n = 153)...
February 23, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29464035/upregulation-of-cell-cycle-genes-in-head-and-neck-cancer-patients-may-be-antagonized-by-erufosine-s-down-regulation-of-cell-cycle-processes-in-oscc-cells
#10
Shariq S Ansari, Ashwini K Sharma, Michael Zepp, Elizabet Ivanova, Frank Bergmann, Rainer König, Martin R Berger
The TCGA database was analyzed to identify deregulation of cell cycle genes across 24 cancer types and ensuing effects on patient survival. Pan-cancer analysis showed that head and neck squamous cell carcinoma (HNSCC) ranks amongst the top four cancers showing deregulated cell cycle genes. Also, the median gene expression of all CDKs and cyclins in HNSCC patient samples was higher than that of the global gene expression. This was verified by IHC staining of CCND1 from HNSCC patients. When evaluating the quartiles with highest and lowest expression, increased CCND1/CDK6 levels had negative implication on patient survival...
January 19, 2018: Oncotarget
https://www.readbyqxmd.com/read/29455435/dna-methylation-regulated-micrornas-in-hpv-16-induced-head-and-neck-squamous-cell-carcinoma-hnscc
#11
M K Sannigrahi, Rajni Sharma, Varinder Singh, Naresh K Panda, Vidya Rattan, Madhu Khullar
INTRODUCTION: Epigenetic modifications have been reported to play an important role in regulating gene expression and these modifications become critical when they have a role in controlling another important layer of epigenetic regulation namely microRNAs. In the present study, we have identified the microRNAs that may be regulated by promoter DNA methylation and histone acetylation in Human papilloma virus-positive head and neck squamous cell carcinoma. METHODOLOGY: HPV-negative cell line (UPCI:SCC-116) and HPV-16 +ve cell line (UPCI:SCC-090) were treated with methylation inhibitor (5-aza-2'-deoxycytidine, AZA) and acetylation inhibitor (Trichostatin-A, TSA), followed by micro-array analysis...
February 17, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29454310/in-vitro-and-in-silico-validation-of-ca3-and-fhl1-downregulation-in-oral-cancer
#12
Cláudia Maria Pereira, Ana Carolina de Carvalho, Felipe Rodrigues da Silva, Matias Eliseo Melendez, Roberta Cardim Lessa, Valéria Cristina C Andrade, Luiz Paulo Kowalski, André L Vettore, André Lopes Carvalho
BACKGROUND: Aberrant methylation is a frequent event in oral cancer. METHODS: In order to better characterize these alterations, a search for genes downregulated by aberrant methylation in oral squamous cell carcinoma (OSCC) was conducted through the mining of ORESTES dataset. Findings were further validated in OSCC cell lines and patients' samples and confirmed using TCGA data. Differentially expressed genes were identified in ORESTES libraries and validated in vitro using RT-PCR in HNSCC cell-lines and OSCC tumor samples...
February 17, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29443623/calprotectin-and-the-initiation-and-progression-of-head-and-neck-cancer
#13
P P Argyris, Z M Slama, K F Ross, A Khammanivong, M C Herzberg
Calprotectin (S100A8/A9), a heterodimeric complex of calcium-binding proteins S100A8 and S100A9, is encoded by genes mapping to the chromosomal locus 1q21.3 of the epidermal differentiation complex. Whereas extracellular calprotectin shows proinflammatory and antimicrobial properties by signaling through RAGE and TLR4, intracytoplasmic S100A8/A9 appears to be important for cellular development, maintenance, and survival. S100A8/A9 is constitutively expressed in myeloid cells and the stratified mucosal epithelia lining the oropharyngeal and genitourinary mucosae...
February 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29435129/computational-methods-reveal-novel-functionalities-of-piwi-interacting-rnas-in-human-papillomavirus-induced-head-and-neck-squamous-cell-carcinoma
#14
Aswini R Krishnan, Yuanhao Qu, Pin Xue Li, Angela E Zou, Joseph A Califano, Jessica Wang-Rodriguez, Weg M Ongkeko
Human papillomavirus (HPV) infection is the fastest growing cause of head and neck squamous cell carcinoma (HNSCC) today, but its role in malignant transformation remains unclear. This study aimed to conduct a comprehensive investigation of PIWI-interacting RNA (piRNA) alterations and functionalities in HPV-induced HNSCC. Using 77 RNA-sequencing datasets from TCGA, we examined differential expression of piRNAs between HPV16(+) HNSCC and HPV(-) Normal samples, identifying a panel of 30 HPV-dysregulated piRNAs...
January 12, 2018: Oncotarget
https://www.readbyqxmd.com/read/29425237/intragenic-dna-methylation-of-pitx1-and-the-adjacent-long-non-coding-rna-c5orf66-as1-are-prognostic-biomarkers-in-patients-with-head-and-neck-squamous-cell-carcinomas
#15
Verena Sailer, Arthur Charpentier, Joern Dietrich, Timo J Vogt, Alina Franzen, Friedrich Bootz, Dimo Dietrich, Andreas Schroeck
BACKGROUND: Patients with squamous cell cancer of the head and neck region (HNSCC) are at risk for disease recurrence and metastases, even after initial successful therapy. A tissue-based biomarker could be beneficial to guide treatment as well as post-treatment surveillance. Gene methylation status has been recently identified as powerful prognostic biomarker in HNSCC. We therefore evaluated the methylation status of the homeobox gene PITX1 and the adjacent long intergenic non-coding RNA (lincRNA) C5orf66-AS1 in publicly available datasets...
2018: PloS One
https://www.readbyqxmd.com/read/29416641/-pd-l1-cd274-and-pd-l2-pdcd1lg2-promoter-methylation-is-associated-with-hpv-infection-and-transcriptional-repression-in-head-and-neck-squamous-cell-carcinomas
#16
Alina Franzen, Timo J Vogt, Tim Müller, Jörn Dietrich, Andreas Schröck, Carsten Golletz, Peter Brossart, Friedrich Bootz, Jennifer Landsberg, Glen Kristiansen, Dimo Dietrich
Background: DNA methylation of the immune checkpoint gene PD-L1 has recently been shown to be associated with PD-L1 mRNA expression in various malignancies. This study aimed to investigate the association of PD-L1 and PD-L2 methylation with mRNA expression, immune cell infitration, protein expression and human papilloma virus (HPV) infection in head and neck squamous cell carcinoma (HNSCC) patients. Results: DNA methylation of PD-L1 and PD-L2 correlates inversely with mRNA expression ( PD-L1 : p ≤ 0...
January 2, 2018: Oncotarget
https://www.readbyqxmd.com/read/29375721/dysregulation-of-mir-200-family-micrornas-and-epithelial-mesenchymal-transition-markers-in-oral-squamous-cell-carcinoma
#17
Ganesan Arunkumar, Arunagiri Kuha Deva Magendhra Rao, Mayakannan Manikandan, Harikrishnan Prasanna Srinivasa Rao, Shanmugam Subbiah, Ramachandran Ilangovan, Avaniyapuram Kannan Murugan, Arasambattu Kannan Munirajan
MicroRNAs (miRNAs) are reported to function as a major component in the cellular signaling circuit, which regulates epithelial-mesenchymal transition (EMT). Dysregulation of the microRNA-200 (miR-200) family and EMT-associated genes enables tumor metastasis and resistance to therapy. The present study profiled miR-200 family members miR-200a, miR-200b, miR-200c, miR-141 and miR-429, and also several EMT-regulatory genes including zinc finger E-box-binding homeobox (ZEB)1, ZEB2, epithelial cadherin and vimentin in 40 oral primary tumors in order to understand their role(s) in oral squamous cell carcinoma (OSCC)...
January 2018: Oncology Letters
https://www.readbyqxmd.com/read/29311018/melanoma-associated-antigen-a11-reduces-erlotinib-and-afatinib-efficacy-in-head-and-neck-cancer
#18
Stefan Hartmann, Leonie Zwick, Katja Maurus, Andreas R Fuchs, Roman C Brands, Axel Seher, Alexander C Kübler, Urs D A Müller-Richter
Melanoma-associated antigen A (MAGE-A) proteins are members of the cancer/testis antigens (CTA), and the expression of these proteins is almost exclusively limited to malignant cells, making them an attractive treatment target. MAGE-A expression is correlated with poor overall survival in several cancers, including head and neck squamous cell carcinoma (HNSCC). Among others, MAGE-A11 was found to be associated with resistance to different antineoplastic and targeted compounds, such as epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs)...
March 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29306329/gene-expression-signature-regulated-by-the-keap1-nrf2-cul3-axis-is-associated-with-a-poor-prognosis-in-head-and-neck-squamous-cell-cancer
#19
Akhileshwar Namani, Md Matiur Rahaman, Ming Chen, Xiuwen Tang
BACKGROUND: NRF2 is the key regulator of oxidative stress in normal cells and aberrant expression of the NRF2 pathway due to genetic alterations in the KEAP1 (Kelch-like ECH-associated protein 1)-NRF2 (nuclear factor erythroid 2 like 2)-CUL3 (cullin 3) axis leads to tumorigenesis and drug resistance in many cancers including head and neck squamous cell cancer (HNSCC). The main goal of this study was to identify specific genes regulated by the KEAP1-NRF2-CUL3 axis in HNSCC patients, to assess the prognostic value of this gene signature in different cohorts, and to reveal potential biomarkers...
January 6, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29290282/rack1-is-an-organ-specific-prognostic-predictor-in-oscc
#20
Sai Liu, JiaJia Liu, Jiongke Wang, Junxin Cheng, Xin Zeng, Ning Ji, Jing Li, Qianming Chen
OBJECTIVES: This study aims to verify that RACK1 is an organ-specific prognostic predictor in patients with oral squamous cell carcinoma (OSCC). EXPERIMENTAL DESIGN: The RACK1 expression level was assessed by immunohistochemistry (IHC) in a total of 342 OSCC patients from 3 independent cohorts. The multivariate hazard ratios for Overall Survival (OS) was determined by Cox proportional hazards regression model. OS was analyzed in 460 Head Neck Squamous Cell Carcinoma (HNSCC) patients from TCGA data set...
January 2018: Oral Oncology
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