Lucidenic acid A is isolated and purified from the fruit body of Ganoderma lucidum.Lucidenic acid-A and -F are modulators of JNK and p38, respectively, they enhance LPS-induced immune responses in monocytic THP-1 cells possibly via the modulation of p38 and JNK MAPKs activation.Lucidenic acid A shows significant cytotoxic activity against Hep G2, Hep G2,2,15, and P-388 tumor cells.