rapamycin

Sirolimus (INN) is a relatively new immunosuppressant drug used to prevent rejection in organ transplantation, and is especially useful in kidney transplants. It is also known as rapamycin. Sirolimus is a macrolide ("-mycin") first discovered as a product of the bacterium Streptomyces hygroscopicus in a soil sample from an island called Rapa Nui, better known as Easter Island. It is marketed under the trade name Rapamune by Wyeth.
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Rapamycin a macrolide compound obtained from Streptomyces hygroscopicus used as an immunosuppressant in tissue transplantation. [more]Rapamycin - Community and Resources

A drug used to help prevent the body from rejecting organ and bone marrow transplants. It is also being studied as a treatment for cancer. Rapamycin belongs to the family of drugs called immunosuppressants. It is now called sirolimus.