4.7 Article

Isorhamnetin and hyperoside derived from water dropwort inhibits inflammasome activation

Journal

PHYTOMEDICINE
Volume 24, Issue -, Pages 77-86

Publisher

ELSEVIER GMBH
DOI: 10.1016/j.phymed.2016.11.019

Keywords

Inflammasome; Interleukin-1beta; Water dropwort; Hyperoside; Isorhamnetin

Funding

  1. Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [NRF-2015R1A2A2A01004183]

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Background: Water dropwort (Oenanthe javanica), an umbelliferous plant, has been reported as hypolipidemic, antiplatelet, antitumor, or immune-stimulating agents and it has been suggested to cure cardiovascular disease and cancer. Purpose: Present study aimed to evaluate the effect of the extracts of water dropwort (EWD) and its pharmacological molecules, hyperoside and isorhamnetin, on inflammatory response, especially inflammasome activation. Study design/Methods: The anti-inflammasome properties of EWD, isorhamnetin, and hyperoside were elucidated by human and mouse macrophages. Results: EWD attenuated secretion of interleukin (IL)-1 and formation of Asc pyroptosome resulting from NLRP3, NLRC4, and AIM2 inflammasome activation without interruption of cytokine transcription. Isorhamnetin selectively inhibited NLRP3 and AIM2 inflammasome activation and down-regulated expression of pro-inflammatory cytokines. Hyperoside selectively interrupted NLRC4 and AIM2 inflammasome activation but did not alter cytokine expression. In addition, EWD, isorhamnetin, and hyperoside inhibited caspase-1. Conclusion: Isorhamnetin and hyperoside, a key molecule of water dropwort, have been suggested as candidates to attenuate inflammasome inhibition. (C) 2016 Elsevier GmbH. All rights reserved.

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