Inhibition of cellular DNA synthesis by rat peritoneal macrophages.
The DNA synthesis in syngeneic, allogeneic and xenogeneic cells was inhibited by peritoneal macrophages of normal WKA rats. This inhibitory effect of macrophages was found to be mediated by a soluble factor (MfID) released into a culture medium from macrophages which was heat-stable and non-dialyzable. The MfID was also responsible for the inhibtion of lymphocyte DNA synthesis by MLC reaction. The action of MfID was indicated to suppress rather than to kill cell growth. It was interpreted that the inhibitory effect of macrophages on cellular DNA synthesis is their inherent property and macrophages may play the role of regulating the proliferation of lymphocytes and other cells.
D000818:Animals; D001202:Ascitic Fluid / Q000166:cytology; D002478:Cells, Cultured; D003601:Cytotoxicity Tests, Immunologic; D004247:DNA / Q000096:biosynthesis*; D006358:Hot Temperature; D008264:Macrophages / Q000502:physiology*; D051381:Rats
D004247:DNA