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Gene. 2012 Feb 1;493(1):124-31. doi: 10.1016/j.gene.2011.11.007. Epub 2011 Nov 15.

A preliminary sketch of horn cancer transcriptome in Indian zebu cattle.

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Department of Animal Biotechnology, College of Veterinary Science & Animal Husbandry, Anand Agricultural University, Anand-388 001, Gujarat, India.


Horn cancer, a type of squamous cell carcinoma, in zebu cattle is an expensive affair in Indian agriculture sector, which accounts for 83.34% of total tumors found. In general, cancer tissue confirms considerably different expression patterns when compared to a normal stage. This includes not only up/down regulation, but also, the aberrant gene expression, the presence of different non-coding RNAs (ncRNAs), pseudogenes expression and genes involved in unusual pathways. We employed Roche 454 next generation sequencing platform to sequence Bos indicus cancerous and normal horn tissue transcripts. This resulted into a total of 909,345 high-confidence deep sequencing reads and detected a range of unusual transcriptional events including tumor associated genes. We also validated expression of two of the four tested genes in five other similar tissue samples by RT-qPCR. Further, seven cancer specific non-coding transcripts were accessed and a few of them have been suggested as cancer specific markers. This study for the first time provides primary transcriptome sketch of Bos indicus horn cancer tissue, and also demonstrates the suitability of the 454 sequencer for transcriptome analysis, which supports the concept of varied gene expression in cancerous condition.

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