Expression Profile of CXCL3 Gene in Peripheral Blood Mononuclear Cells Challenged in vitro with Theileria annulata in Crossbred Cattle

Bovine tropical theileriosis is a major haemoprotozoan disease associated with high rates of morbidity and mortality particularly in exotic and crossbred cattle. Recent studies suggest that a number of immune response genes, expressed differentially in exotic and indigenous breeds play an important role in breed specific resistance to tropical theileriosis. In the present study, expression of CXCL3 gene which has chemotactic activity for neutrophils, controls migration and adhesion of monocytes and ultimately mediates its effects on target cells by interacting with a cell surface chemokine receptor called CXCR2 was studied in crossbred cattle. The in vitro experimental result revealed significant difference in CXCL3 gene expression in Theileria annulata challenged peripheral blood mononuclear cells of crossbred animals as compared to healthy controls and a 2.53 fold increase (p < 0.05) was recorded. The results of current study indicate that CXCL3 may be involved in host-pathogen interaction during tropical theileriosis.