sirolimus   Click here for help

GtoPdb Ligand ID: 6031

Synonyms: AY-22989 | Fyarro® (sirolimus albumin-bound particles) | Rapamune® | rapamycin | WY-090217
Approved drug PDB Ligand Immunopharmacology Ligand
sirolimus is an approved drug (FDA (1999), EMA (2001))
Compound class: Synthetic organic
Comment: Sirolimus is a macrolide produced by the bacteria Streptomyces hygroscopicus. It has potent immunosuppressive and antiproliferative properties. Sirolimus is classified as a Type IV allosteric kinase inhibitor [10].
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2D Structure
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Physico-chemical Properties
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Hydrogen bond acceptors 14
Hydrogen bond donors 3
Rotatable bonds 6
Topological polar surface area 195.43
Molecular weight 913.56
XLogP 4.32
No. Lipinski's rules broken 1
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Isomeric SMILES CO[C@@H]1C[C@@H](CC[C@H]1O)C[C@H]([C@H]1OC(=O)[C@@H]2CCCCN2C(=O)C(=O)[C@]2(O)O[C@@H](CC[C@H]2C)C[C@H](OC)/C(=C/C=C/C=C/[C@H](C[C@H](C(=O)[C@@H]([C@@H](/C(=C/[C@H](C(=O)C1)C)/C)O)OC)C)C)/C)C
InChI InChI=1S/C51H79NO13/c1-30-16-12-11-13-17-31(2)42(61-8)28-38-21-19-36(7)51(60,65-38)48(57)49(58)52-23-15-14-18-39(52)50(59)64-43(33(4)26-37-20-22-40(53)44(27-37)62-9)29-41(54)32(3)25-35(6)46(56)47(63-10)45(55)34(5)24-30/h11-13,16-17,25,30,32-34,36-40,42-44,46-47,53,56,60H,14-15,18-24,26-29H2,1-10H3/b13-11+,16-12+,31-17+,35-25+/t30-,32-,33-,34-,36-,37+,38+,39+,40-,42+,43+,44-,46-,47+,51-/m1/s1
No information available.
Summary of Clinical Use Click here for help
Sirolimus is used for prophylaxis of renal transplant rejection [7,12], and may be used in combination with cyclosporin A. In June 2015 the US FDA approved sirolimus for the treatment of lymphangioleiomyomatosis, a rare proliferative but benign lung disease [11].
Nab-sirolimus (ABI-009; Fyarro®) is an albumin-bound nanoparticle formulation of sirolimus that was developed by Aadi Bioscience as the first treatment for advanced malignant perivascular epithelioid cell neoplasms (PEComa; see NCT02494570) [9,14]. Fyarro® was approved by the FDA in November 2021.
In May 2023 the EMA expanded authorisation to include the treatrment of angiofibroma of tuberous sclerosis.
Mechanism Of Action and Pharmacodynamic Effects Click here for help
Sirolimus binds to the FK506 binding protein 12 (FKBP12), creating a complex which inhibits mammalian target of rapamycin (mTOR). The FKBP12-sirolimus complex binds to a site distinct from the kinase domain of mTOR and acts as a negative allosteric modulator of mTOR activity [2-3], interacting only when mTOR is bound to raptor and mLST8 [10]. This action reduces mTOR-induced proliferation of activated T-cells, the cells which would normally be involved in the immunological attack on transplanted tissue [7,13].
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