Anti-inflammatory terpenes from Schefflera rubriflora C. J. Tseng & G. Hoo with their TNF-α and IL-6 inhibitory activities
摘要:
The 95% ethanol extract and its EtOAc and n-BuOH fractions obtained from the leaves and twigs of Schefflera rubriflora C. J. Tseng & G. Hoo showed significant inhibitory activities (33.6%, 35.7% and 40.6%, respectively) against croton oil-induced ear inflammation in mice. Bioactivity-guided isolation and separation gave eight previously undescribed terpenes or terpene glycosides. Structural elucidation was based on UV, IR, and NMR spectroscopy, MS, experimental and calculated ECD data, and Mosher's method. To identify anti-inflammatory components from the extract, all the compounds were evaluated for tumor necrosis factor-alpha (TNF-alpha) and interleukine-6 (IL-6) inhibitory activities. Four undescribed compounds inhibited mRNA expression of TNF-alpha and IL-6 with IC50 values of 15.3-52.4 mu M.
[EN] ALKENYL SUBSTITUTED CYCLOALIPHATIC COMPOUNDS AS CHEMICAL INDUCERS OF PROXIMITY<br/>[FR] COMPOSÉS CYCLOALIPHATIQUES SUBSTITUÉS PAR ALCÉNYLE COMME INDUCTEURS CHIMIQUES DE PROXIMITÉ
申请人:UNIV LELAND STANFORD JUNIOR
公开号:WO2011163029A2
公开(公告)日:2011-12-29
Methods of inducing proximity of chimeric molecules in a cell are provided. Aspects of the methods include contacting a cell with an amount of alkenyl substituted cycloaliphatic (ASC) inducer compound, e.g., abscisic acid, effective to induce proximity of first and second chimeric molecules. Also provided are compositions and kits for practicing various embodiments of the methods. Methods of the invention find use in a variety of different applications, including transcription induction applications.
[EN] TEA TREE OIL FOR INDUCING SYSTEMIC RESISTANCE IN PLANTS<br/>[FR] HUILE DE THÉIER POUR INDUIRE UNE RÉSISTANCE SYSTÉMIQUE CHEZ LES PLANTES
申请人:STOCKTON ISRAEL LTD
公开号:WO2021044406A1
公开(公告)日:2021-03-11
The present invention relates to inducing plant resistance to stress factors, including pathogens, draught and wounding, by application of Tea Tree Oil, or components thereof to plants. More specifically, the invention relates to a method for inducing defense response in a plant, comprising applying to a plant or a plant part, a composition comprising tea tree oil (TTO) or components thereof.