Project description:Bronchioloalveolar carcinoma (BAC), a subtype of lung adenocarcinoma (ADC) without stromal, vascular, or pleural invasion, is considered an in situ tumor with a 100% survival rate. However, the histological criteria for invasion remain controversial. BAC-like areas may accompany otherwise invasive adenocarcinoma, referred to as mixed type adenocarcinoma with BAC features (AWBF). AWBF are considered to evolve from BAC, representing a paradigm for malignant progression in ADC. However, the supporting molecular evidence remains forthcoming. Here, we have studied the genomic changes of BAC and AWBF by array comparative genomic hybridization (CGH). We used submegabase-resolution tiling set array CGH to compare the genomic profiles of 14 BAC or BAC with focal area suspicious for invasion with those of 15 AWBF. Threshold-filtering and frequency-scoring analysis found that genomic profiles of noninvasive and focally invasive BAC are indistinguishable and show fewer aberrations than tumor cells in BAC-like areas of AWBF. These aberrations occurred mainly at the subtelomeric chromosomal regions. Increased genomic alterations were noted between BAC-like and invasive areas of AWBF. We identified 113 genes that best differentiated BAC from AWBF and were considered candidate marker genes for tumor invasion and progression. Correlative gene expression analyses demonstrated a high percentage of them to be poor prognosis markers in early stage ADC. Quantitative PCR also validated the amplification and overexpression of PDCD6 and TERT on chromosome 5p and the prognostic significance of PDCD6 in early stage ADC patients. We identified candidate genes that may be responsible for and are potential markers for malignant progression in AWBF. Keywords: array comparitive genomic hybridization, bronchioloalveolar carcinoma, non-small-cell lung carcinoma, prognostic markers
Project description:To obtain further insights into the role of bacterial activity in BAC filter performance, the expressed proteins of the bacterial community residing in the BAC filter were identified by a metaproteomic approach.
Project description:Purpose: The goal of this study is to understand what gene changes are associated with removal of Esrrg in parvalbumin-positive neurons from the mouse cortex using BAC-TRAP Methods: Cortex from mice expressing the L10a transgene used for BAC-TRAP method of RNA isolation and PVcre on either WT or ESRRG flox backgrounds, 3-4 monts of age; two hemispheres/mouse were then extracted and flash frozen on dry ice. RNA was isolated using the BAC-TRAP method and samples were sent for sequencing.
Project description:Purpose: The goal of this study is to understand what gene changes are associated with removal of Esrrg in dopaminerigc neurons from the mouse midbrain using BAC-TRAP and an AAV for Thcre Methods: Midbrain from mice expressing the L10a transgene used for BAC-TRAP method of RNA isolation both with and without deletion of Esrrg using AAV:THCre were aged 1 month post-injection and midbrains were then extracted and flash frozen on dry ice. RNA was isolated using the BAC-TRAP method and samples were sent for sequencing.
Project description:We generated mice with a transgenic BAC on a B6 background. The BAC contains Glo1, and the transgenic mice were found to overexpress Glo1. We performed a microarray on whole-brain RNA of adult mice to identify differentially expressed genes resulting from Glo1 overexpression.
Project description:To investigate the impact of EtOH exposure on human excitatory neurons, we induced NGN2 expression in 4 neural progenitor cell lines. We then conducted a 7-day intermittent EtOH exposure protocol starting at Day 21 post-induction using two concentrations: 2 mM (0.01 BAC equivalent) and 17 mM (0.08 BAC equivalent). RNA was harvested at Day 28 post induction.
Project description:Comparison of probe-target dissociations of probe Eub338 and Gam42a with native RNA of P. putida, in vitro transcribed 16s rRNA of P. putida, in vitro transcribed 16S rRNA of a 2,4,6-trinitrotoluene contaminated soil and an uncontaminated soil sample. Functional ANOVA revealed no significant differences in the dissociation curves of probe Eub338 when hybridised to the different samples. On the opposite, the dissociation curve of probe Gam42a with native RNA of P. putida was significantly different than the dissociation curves obtained with in vitro transcribed 16S rRNA samples. Keywords: Microbial diversity, thermal dissociation analysis, CodeLink microarray