The role of monocytes and prostaglandin E in the regulation of mitogen response.

The incubation of human monocyte rich fraction with PWM and SRBC revealed the production of significant amount of PGE in the supernate, suggesting the participation of PGE produced by monocytes in mitogen response. Con A-induced 3H-thymidine incorporation by lymphocytes was enhanced by addition of monocytes, and was further increased in the presence of indomethacine. These indicate that monocytes have helper effect in mitogen stimulation and are regulating the response through the production of PGE.