Project description:Tongue squamous cell carcinoma is a tumour type with rather low five year survival, around 60%. The poor survival rate has been ascribed to late detection, a high frequency of locoregional recurrence, the occurrence of secondary primary tumours and death due to comorbidity. One reason for development of recurrence is thought to be the existence of transformed cells in areas adjacent to the primary tumour, cancerization field effect. The aim of this study was to map the changes in the tumour free tongue tissue adjacent to tongue tumours compared with healthy control tongue tissue to better understand the cancerization field effect. Tissue biopsies were collected from tumour (T) and tumour free tissue adjacent to the tumour (TF) from patients with tongue squamous cell carcinoma. Control tissue was collected from latter border of the tongue of tumour free healthy volunteers (C). All samples were homogenized and RNA was extracted. The RNA was biotin labelled and run on Illumina HT-12 bead chip array.
Project description:RNA extracted from 78 FFPE tongue samples, 62 tongue carcinomas and 16 non-malignant controls, were succesfully analysed using the whole genome DASL array to obtain gene expression profiles. Gene expression profiles were used to identify differentially expressed genes with the ultimate goal of finding out their importance for tongue cancer development and maintenance. Sample were formalin fixed paraffin embedded biopsies taken for diagnostic purposes and had been stored between 1 and 13 years. Because of the general poor quality of RNA from archival samples a special focus were put on its effect on the detected expression levels. 28 tumours and 16 controls with a CTdiff< 5 were selected for differential gene expression analysis. Data for only these sample were normalized again and can be found in seperate data file.
Project description:A majority of individuals infected with human immunodeficiency virus (HIV) have inadequate access to antiretroviral therapy and ultimately develop debilitating oral infections that often correlate with disease progression. Our study evaluates the potential of simian immunodeficiency virus (SIV) infected rhesus macaques to serve as a non-human primate model for oral manifestations of HIV disease. Microarrays were used to characterize changes in gene expression in the tongue mucosa that occur during chronic SIV infection. Dorsal tongue tissues from healthy uninfected macaques and macaques with chronic stage SIV infection were used for RNA extraction and hybridization on Affymetrix microarrays.
Project description:A majority of individuals infected with human immunodeficiency virus (HIV) have inadequate access to antiretroviral therapy and ultimately develop debilitating oral infections that often correlate with disease progression. Our study evaluates the potential of simian immunodeficiency virus (SIV) infected rhesus macaques to serve as a non-human primate model for oral manifestations of HIV disease. Microarrays were used to characterize changes in gene expression in the dorsal tongue epithelium that occur during chronic SIV infection. Epithelial cells were laser microdissected from dorsal tongue tissue sections from healthy uninfected macaques and macaques with chronic stage SIV infection and used for RNA extraction and hybridization on Affymetrix microarrays.
Project description:RNA extracted from 78 FFPE tongue samples, 62 tongue carcinomas and 16 non-malignant controls, were succesfully analysed using the whole genome DASL array to obtain gene expression profiles. Gene expression profiles were used to identify differentially expressed genes with the ultimate goal of finding out their importance for tongue cancer development and maintenance. Sample were formalin fixed paraffin embedded biopsies taken for diagnostic purposes and had been stored between 1 and 13 years. Because of the general poor quality of RNA from archival samples a special focus were put on its effect on the detected expression levels. 28 tumours and 16 controls with a CTdiff< 5 were selected for differential gene expression analysis. Raw data for only these samples were normalized again. Data for these 44 samples can be found here.
Project description:dataset for metaproteomics analysis to characterize of the composition of salivary and tongue microbial communities within healthy subjects in the range of age between 20-30 years