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Sarcophilus harrisii

ABSTRACT: The Tasmanian devil transcriptome reveals Schwann cell origins of a clonally transmissible cancer (small RNA sequencing)

PROVIDER: PRJNA118101 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR034103.fastq.gz	Fastqsanger.gz
	SRR034104.fastq.gz	Fastqsanger.gz
	SRR034105.fastq.gz	Fastqsanger.gz
	SRR034106.fastq.gz	Fastqsanger.gz
	SRR034107.fastq.gz	Fastqsanger.gz

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The Tasmanian devil transcriptome reveals Schwann cell origins of a clonally transmissible cancer (small RNA sequencing)

Project description:The Tasmanian devil, a marsupial carnivore, is endangered due to the emergence of a clonally transmissible cancer known as Devil Facial Tumor Disease (DFTD). This fatal cancer is clonally derived and is an allograft transmitted between devils by biting. We performed a large-scale genetic analysis of DFTD with microsatellite genotyping, mitochondrial genome analysis, as well as deep sequencing of the DFTD transcriptome and miRNAs. These studies confirm that DFTD is a monophyletic clonally transmissible tumor, and suggest that the disease is of Schwann cell origin. On the basis of these results we have generated a diagnostic marker for DFTD, and identify a suite of genes of relevance to DFTD pathology and transmission. We provide a genomic dataset for the Tasmanian devil, which is applicable to cancer diagnosis, disease evolution and conservation biology. This submission contains only small RNA sequence data from this study. Small RNA (18 - 24 nt) sequences from 15 Tasmanian devil (Sarcophilus harrisii) tissue samples

2010-01-01 | E-GEOD-18352 | biostudies-arrayexpress

The Tasmanian devil transcriptome reveals Schwann cell origins of a clonally transmissible cancer (small RNA sequencing)

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Two of a kind: Transmissible Schwann cell cancers in the endangered Tasmanian devil.

Project description:Devil facial tumour disease 1 and 2 (DFT1 and DFT2) are two genetically distinct transmissible cancers endangering the survival of the Tasmanian devil (Sarcophilus harrisii). DFT1 first arose from a cell of the Schwann cell lineage, however, the tissue-of-origin of the recently discovered DFT2 cancer remains unknown. Here we have performed mRNA and protein expression analyses to show that variation in expression patterns between DFT1 and DFT2 tumours is low. Furthermore, DFT2 cells express a range of markers associated with Schwann cell differentiation, suggesting a similar tissue-of-origin to DFT1 tumours. These findings suggest that devils may be predisposed to transmissible cancers of Schwann cell origin. The emergence of these two unique cancers presents an unprecedented opportunity to gain insight into cancer development in animal species.

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Passage of transmissible cancers in the Tasmanian devil is due to a dominant, shared peptide motif and a limited repertoire of MHC-I allotypes

Project description:Transmissible cancers are spread via the passage of malignant cells. The survival of the Tasmanian devil, the largest marsupial carnivore, is threatened by two independent transmissible cancers, devil facial tumour (DFT) 1 and devil facial tumour 2 (DFT2). To aid the development of a peptide vaccine and to interrogate how histocompatibility barriers can be overcome, we analysed the peptides bound to Major Histocompatibility Complex class I molecules from the Tasmanian devil and its transmissible tumours.

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