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Steroidal sapogenins (SS) are structural analogues of steroidal drugs, which are frequently used for the treatment of several diseases including reproductive, malignancies, neurological, and inflammation-related diseases. The glucocorticoid receptor (GR) is a nuclear receptor that regulates development, metabolism, and inflammation, in response to steroidal ligands. Therefore, GR is considered as a potential therapeutic target for steroidal agents to the treatment of inflammation-related diseases. We hypothesized that SS may act as an agonist for GR due to structural similarity with corticosteroids. In this study, we carried out  in silico  screening of various SS from the genus  Trillium  to check their potential as an agonist for GR. Our data suggest that out of 42 SS, only 7 molecules have interacted with GR. However, molecular mechanics with generalized Born and surface area (MM-GBSA) analysis revealed that only two SS (SS  38  and SS  39 ) molecules bind favorably to GR. Among these, SS  38  (docking score: –9.722 Kcal/mol and MM-GBSA ΔG bind : –50.192 Kcal/mol) and SS  39  (docking score: –11.20 Kcal/mol and MM-GBSA ΔG bind : –58.937 Kcal/mol) have best docking and MM-GBSA scores. Molecular dynamics (MD) simulation studies of SS  38 , SS  39 , and dexamethasone-GR complex revealed that both SS shows hydrogen bonding and hydrophobic interaction with GR over the 120 ns simulation with mild fluctuations. The current study suggests that SS  38  and SS  39  may be further explored as a potential agonist to treat several disease conditions mediated by GR.

Molecular docking and dynamic simulation approach to decipher steroidal sapogenins (genus Trillium ) derived agonists for glucocorticoid receptor