Platycodon grandiflorus polysaccharide inhibits the inflammatory response of 3D4/21 cells infected with PCV2.

Porcine circovirus type 2 (PCV2) infection cause multi-systemic inflammation in pigs. Platycodon grandiflorus polysaccharide (PGPS) has been reported to have the effects of immune regulation and disease resistance. Nevertheless, the role and mechanism of PGPS in the inflammatory response of 3D4/21 cells induced by PCV2 infection remain unclear.