Identification of differentially expressed genes associated with osteochondrosis in standardbred horses using RNA arbitrarily primed PCR.

This study investigates the specific genes that are differently expressed in foals vulnerable to a congenital joint disorder called osteochondrosis. Researchers used genetic screening and real-time PCR to identify two genes not previously associated with this disease.

Objective

Researchers aimed to identify differentially expressed genes connected with osteochondrosis (OC). They conducted their study on Standardbred horses, a breed prone to this disease. By identifying these genes, they hope to shed light on new targets for further research and potential therapies.

Methodology

• The study’s subjects were foals that were thought to be predisposed to OC. This predisposition was based on their parents having the disease at the distal intermediate ridge of the tibia.
• Tissues were sampled from these foals from the cranial region of the distal intermediate ridge of the tibia in the tarso-crural joint.
• The researchers isolated RNA and subjected it to arbitrarily primed PCR (RAP-PCR) to search for differentially expressed genes. This process was followed by a fingerprinting technique that served to verify the RAP-PCR findings.

Results

• After conducting real-time RT-PCR to confirm the RAP-PCR screening results, the researchers identified two genes that were differentially expressed and had not been previously correlated with OC.
• These genes were identical to the TLK2 gene and an equine expressed sequence tag (EST), suggesting potential new avenues of investigation into the genetic basis of OC in horses.

Conclusions

• This study underlines the importance of genetic research in understanding and potentially combating diseases like OC. It opens new doors for further research on these two identified genes as potential areas of focus for combating OC.
• The differentially expressed genes found in this study may provide insightful information in the quest to understand and control OC, contributing significantly to veterinary medicine and horse breeding practices.