Expression of c-yes oncogene product in various animal tissues and spontaneous canine tumours.

This research article presents a study on the presence of the c-yes oncogene product in different animal species and in canine tumors. It suggests this gene may have a physiological role in cell growth and metabolism in both adult and foetal tissues. However, expression levels vary significantly among different types of tumors.

Background of the Study

• The research was based on an immunohistochemical study of various organs in adult dogs, cats, pigs, horses, cows, and chickens, as well as 185 spontaneous canine tumors.
• The researchers used paraffin wax sections and a commercially available antibody to the human c- yes oncogene product for these assessments.

Findings in Normal Adult and Foetal Tissues

• In the six animal species studied, certain cells in adult normal tissues were found to express the c-yes product. These cells include epithelial cells of renal tubules, myocardium cells, hepatocytes, cerebellar Purkinje cells, and adrenal cortical cells.
• In the foetal tissues of dogs and chickens, c-yes product expression was also observed in canine chorionic villi cells, chick yolk sac surface epithelium, renal tubule epithelial cells, hepatocytes, and the myocardium.
• These findings suggest the c-yes proto-oncogene plays a potential physiological role related to cell growth and metabolic processes in these adult and foetal tissues.

Findings in Canine Tumours

• Of the 185 canine tumors tested, approximately 32% expressed the c-yes oncogene product.
• The expression of c-yes in tumors varied by type. For instance, 44.4% of skin tumors, 5.5% of round cell tumors, 35.7% of soft tissue tumors, 21.4% of testicular tumors, 29.1% of mammary tumors, and 52.6% of other types of tumors were found to be c-yes positive.
• Overall, the expression of the c-yes oncogene appeared to be common in spontaneously arising canine tumors, but the degree of expression varied significantly by tumor type.