The immunosuppressant action of cyclosporin appears to be due to
Ref-KDT 6/e p838,839,840 Cyclosporine and tacrolimus acts by inhibiting calcineurin, which is involved in the activation of NFAT. Final result of this process is increased transcription of IL-2 gene. Sirolimus does not inhibit the transcription of IL-2 but interferes with its action. It inhibits the enzyme tyrosine kinase, known as mTOR (which is activated by IL-2).
Activation of NK cells
Blockade of tissue response to inflammatory mediators
Inhibition of Gene transcription of interleukin
Interference with antigen recognition
Other topics and Adverse effects