| 摘要 |
Cyclosporin analogs containing a MeAla or MeAbu residue at the 6-position of the cyclic undecapeptide have been discovered to sensitize multidrug resistant cells to certain chemotherapeutic agents. These cyclosporin analogs have also been shown to increase the sensitivity of cells already susceptible to the chemotherapeutic agents. In addition, these cyclosporin A analogs lack the nephrotoxic and immunosuppressive activity of cyclosporin A.
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