Generation of a de novo transcriptome from equine lamellar tissue.

This research sought to explore new insight on Laminitis, a hoof disease in horses that causes significant pain and lameness, by creating a new understanding of the genetic information related to the disease using whole transcriptome sequencing of lamellar tissue from healthy and affected horses. The article gives detailed information about the sequencing process and data results which can be used for further research on possible interventions for the disease.

Objective and Methodology

• The study centered on understanding the genetic details of Laminitis, a severe disease in horses that leads to structural failure in the hoof capsule.
• The researchers strived to enhance the existing gene annotation through whole transcriptome sequencing, providing a wealth of new genetic data for further study.
• They conducted sequencing on sagittal lamellar sections from one control (healthy) horse and two horses affected by Laminitis.

Results

• The whole transcriptome sequencing of the three samples produced 113 million reads. Out of these, 88% mapped successfully to the current equine reference genome (equCab2).
• This process allowed the researchers to identify 119,430 single nucleotide polymorphisms (SNPs), contributing to the understanding of genetic diversity and disease susceptibility.
• The de novo assembly resulted in around 75,000 transcripts, of which 36,000 corresponded to known annotations, therefore revealing numerous uncharacterized genetic transcripts.
• The team further validated the structure and expression of 12 selected assemblies through Reverse transcription polymerase chain reaction (RT-PCR), confirming the reliability of the data.

Conclusions

• The study demonstrates that transcriptome sequencing is a powerful resource for expanding equine gene annotations and identifying novel targets for future research on Laminitis.
• All annotated transcript models are publicly available and thus act as valuable resources for the scientific community to advance research in this field.