Abstract:
In the current study, tea saponin, identified as the primary bioactive constituent in seed pomace of
Camellia oleifera Abel., was meticulously extracted and hydrolyzed to yield five known sapogenins: 16-
O-tiglogycamelliagnin B (
a), camelliagnin A (
b), 16-
O-angeloybarringtogenol C (
c), theasapogenol E (
d), theasapogenol F (
e). Subsequent biotransformation of compound
a facilitated the isolation of six novel metabolites (
a1−
a6). The anti-inflammatory potential of these compounds was assessed using pathogen-associated molecular patterns (PAMPs) and damage-associated molecular patterns molecules (DAMPs)-mediated cellular inflammation models. Notably, compounds
b and
a2 demonstrated significant inhibitory effects on both lipopolysaccharide (LPS) and high-mobility group box 1 (HMGB1)-induced inflammation, surpassing the efficacy of the standard anti-inflammatory agent, carbenoxolone. Conversely, compounds
d,
a3, and
a6 selectivity targeted endogenous HMGB1-induced inflammation, showcasing a pronounced specificity. These results underscore the therapeutic promise of
C. oleifera seed pomace-derived compounds as potent agents for the management of inflammatory diseases triggered by infections and tissue damage.