Chemical constituents with senolytic activity from the stems of Limacia scandens

While screening senotherapeutics from natural products, seven undescribed chemicals, two syringylglycerol derivatives, two cyclopeptides, one tigliane analogue, and two chromone derivatives, as well as six known compounds were isolated from the stems of Limacia scandens. The structures of compounds were elucidated through spectroscopic data analysis, including 1D and 2D NMR, HRESIMS, and CD data. All compounds were tested in replicative senescent human dermal fibroblasts (HDFs) to determine their potential as senotherapeutic agents to specifically target senescent cells. One tigliane and two chromones derivatives showed senolytic activity, indicating that senescent cells were selectively removed. Especially, 2-{2-[(3'-O-beta-D-glucopyranosyl) phenyl]ethyl}chromone is expected to be a potential senotherapeutics by inducing HDF death, inhibiting the activity of senescence-associated beta-galactosidase (SA-beta-gal) and expressing senescence-associated secretory phenotype (SASP) factors.

Automated summary

Seven undescribed chemicals, including two syringylglycerol derivatives, two cyclopeptides, one tigliane analogue, and two chromone derivatives, were isolated from the stems of Limacia scandens during the screening of senotherapeutics from natural products. The structures of these compounds were determined through spectroscopic data analysis. Testing these compounds in replicative senescent human dermal fibroblasts revealed that one tigliane and two chromone derivatives exhibited senolytic activity, selectively eliminating senescent cells. In particular, 2-{2-[(3'-O-beta-D-glucopyranosyl) phenyl]ethyl}chromone showed potential as a senotherapeutic agent by inducing HDF death, inhibiting the activity of senescence-associated beta-galactosidase (SA-beta-gal), and expressing senescence-associated secretory phenotype (SASP) factors.