Abstract
Bacterial β-glucuronidase in the intestine is involved in the conversion of 7-ethyl-10-hydroxycamptochecin glucuronide (derived from irinotecan) to 7-ethyl-10-hydroxycamptothecin, which causes intestinal bleeding and diarrhea (side effects of anti-cancer drugs). Twelve compounds (1-12) from Polygala tenuifolia were evaluated in terms of β-glucuronidase inhibition in vitro. 4-O-Benzoyl-3′-O-(O-methylsinapoyl) sucrose (C3) was highly inhibitory at low concentrations. C3 (an uncompetitive inhibitor) exhibited a ki value of 13.4 μM; inhibitory activity increased as the substrate concentration rose. Molecular simulation revealed that C3 bound principally to the Gln158-Tyr160 enzyme loop. Thus, C3 will serve as a lead compound for development of new βglucuronidase inhibitors.
| Original language | English |
|---|---|
| Pages (from-to) | 1576-1582 |
| Number of pages | 7 |
| Journal | Journal of Microbiology and Biotechnology |
| Volume | 31 |
| Issue number | 11 |
| DOIs | |
| State | Published - 28 Nov 2021 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
Keywords
- Molecular simulation
- Polygala tenuifolia
- Uncompetitive inhibitor
- β-glucuronidase
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