Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Rhodococcus sp. RHA1 grown on propane versus pyruvate

ABSTRACT: three late exponential phase Rhodococcus sp. RHA1 propane-grown cultures compared to pyruvate-grown cultures three two-colour microarrays

ORGANISM(S): Rhodococcus sp. RHA1

SUBMITTER: William Mohn

PROVIDER: E-GEOD-8480 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

An inducible propane monooxygenase is responsible for N-nitrosodimethylamine degradation by Rhodococcus sp. strain RHA1.

Sharp Jonathan O JO Sales Christopher M CM LeBlanc Justin C JC Liu Jie J Wood Thomas K TK Eltis Lindsay D LD Mohn William W WW Alvarez-Cohen Lisa L

Applied and environmental microbiology 20070914 21

Rhodococci are common soil heterotrophs that possess diverse functional enzymatic activities with economic and ecological significance. In this study, the correlation between gene expression and biological removal of the water contaminant N-nitrosodimethylamine (NDMA) is explored. NDMA is a hydrophilic, potent carcinogen that has gained recent notoriety due to its environmental persistence and emergence as a widespread micropollutant in the subsurface environment. In this study, we demonstrate t ...[more]

PMID: 17873074

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Project description:Mammary cancer is the most common type of cancer in female dogs with a lifetime risk of over 24% when dogs are not spayed. The elucidation of the complete canine genome opens new areas for development of cancer therapies. These should be tested first by in vitro models such as cell lines. However, to date, no canine mammary cell lines have been characterized by expression profiling. In this study, canine mammary tumour cell lines with histologically distinct primary tumours of origin were characterized using a newly developed canine cDNA microarray. Comparisons of gene expression profiles showed enrichment for distinct biological pathways and were related to biological properties of the cell lines such as growth rate and in vitro tumourigenicity. Additionally, gene expression profiles of cell lines also showed correspondence to their tumour of origin. Major differences were found in Wnt, cell cycle, cytokine/Rho-GTPase, alternative complement and integrin signalling pathways. Because these pathways show an overlap at the molecular level with those found in human breast cancer, the expression profiling of spontaneous canine mammary cancer may also function as a biological sieve to identify conserved gene expression or pathway profiles of evolutionary significance that are involved in tumourigenesis. These results are the basis for further characterization of canine mammary carcinomas and development of new therapies directed towards specific pathways. In addition these cell lines can be used to further investigate identified deregulated pathways and characterize until now unannotated genes. Keywords: cell line type comparision Three canine mammary tumor cell lines (CMT) originating from benign mixed tumor (CMT-U229), primary mammary osteosarcoma (CMT-U335) and primary mammary anaplastic carcinoma (P114) were compared directly to each other in this study. Total RNA was isolated from cells grown to near confluence. In vitro transcription followed by labeling and hybridization to cDNA microarray was carried out. In a loop design of hybridization, labeled cRNA from cell lines were hybridized against each other. Statistical analysis of the log transformed normalized data was done using SAM (significance analysis of microarray) and differentially expressed genes from each experimental subset (comparison of two cell lines) were identified. Dye swaps and at least one biological replicates were included under each experimental subset (each comparision).

Dataset Information

Rhodococcus sp. RHA1 grown on propane versus pyruvate

Publications

An inducible propane monooxygenase is responsible for N-nitrosodimethylamine degradation by Rhodococcus sp. strain RHA1.

Similar Datasets

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