Discovery and functional identification of plant-derived small compounds as the immunosuppressant attract much attention these years. Albaconol is a new kind of small compound, prenylated resorcinol, isolated from the...Discovery and functional identification of plant-derived small compounds as the immunosuppressant attract much attention these years. Albaconol is a new kind of small compound, prenylated resorcinol, isolated from the fruiting bodies of the inedible mushroom Albatrellus confluens. Our previous studies showed that albaconol can inhibit tumor cell growth and dendritic cell maturation. However, the immunomodulatory roles and the underlying mechanisms of albaconol have not been fully understood. In this study we investigated the effects of albaconol on the proliferation and LPS-induced proinflammatory cytokine production of macrophages. Albaconol, when used at a dose higher than 1.0 μg/ml, inhibited proliferation of RAW264.7 cells in a doseand time-dependent manner, and could induce cellular apoptosis when used at high dosage （≥7.5 μg/ml）. Furthermore, we found that albaconol used at a lower dosage without apoptosis induction could significantly inhibit LPS-induced TNF-α IL-6, IL-1β and NO production in RAW264.7 cells. The inhibition of NF-κB activation and enhancement of SOCS1 expression in LPS-stimulated macrophages by albaconol may contribute to the above immunosuppressive or anti-inflammatory activities of albaconol. Our results suggest that albaconol may be a potential immunosuppressive and anti- inflammatory drug. Cellular ＆ Molecular Immunology. 2008;5（4）：271-278.展开更多
A new macrocyclic diamide, 22-membered macrocyclic diamide, named cyclodicaprylamide（2）, and five known compounds, bis（2-ethylhexyl） phthalate（1）, ethyl 3,4,5-trimethoxybenzoate（3）, ethyl 3,4,5-trimethoxycinna...A new macrocyclic diamide, 22-membered macrocyclic diamide, named cyclodicaprylamide（2）, and five known compounds, bis（2-ethylhexyl） phthalate（1）, ethyl 3,4,5-trimethoxybenzoate（3）, ethyl 3,4,5-trimethoxycinnamate （4）, （＋）-syringaresinol（5）, loliolide（6）, were isolated from the roots of Rauvolfia yunnanensis Tsiang. Their structures were elucidated based on NMR, 2D NMR, and MS spectrum, respectively. They were obtained from it for the first time.展开更多
基金grants from the National Natural Science Foundation of China (30721091)the National Key Basic Research Program of China (2007CB512403)
文摘Discovery and functional identification of plant-derived small compounds as the immunosuppressant attract much attention these years. Albaconol is a new kind of small compound, prenylated resorcinol, isolated from the fruiting bodies of the inedible mushroom Albatrellus confluens. Our previous studies showed that albaconol can inhibit tumor cell growth and dendritic cell maturation. However, the immunomodulatory roles and the underlying mechanisms of albaconol have not been fully understood. In this study we investigated the effects of albaconol on the proliferation and LPS-induced proinflammatory cytokine production of macrophages. Albaconol, when used at a dose higher than 1.0 μg/ml, inhibited proliferation of RAW264.7 cells in a doseand time-dependent manner, and could induce cellular apoptosis when used at high dosage （≥7.5 μg/ml）. Furthermore, we found that albaconol used at a lower dosage without apoptosis induction could significantly inhibit LPS-induced TNF-α IL-6, IL-1β and NO production in RAW264.7 cells. The inhibition of NF-κB activation and enhancement of SOCS1 expression in LPS-stimulated macrophages by albaconol may contribute to the above immunosuppressive or anti-inflammatory activities of albaconol. Our results suggest that albaconol may be a potential immunosuppressive and anti- inflammatory drug. Cellular ＆ Molecular Immunology. 2008;5（4）：271-278.
基金the Natural Science Foundation of Yunnan Province, China(No.2006C0010Z).
文摘A new macrocyclic diamide, 22-membered macrocyclic diamide, named cyclodicaprylamide（2）, and five known compounds, bis（2-ethylhexyl） phthalate（1）, ethyl 3,4,5-trimethoxybenzoate（3）, ethyl 3,4,5-trimethoxycinnamate （4）, （＋）-syringaresinol（5）, loliolide（6）, were isolated from the roots of Rauvolfia yunnanensis Tsiang. Their structures were elucidated based on NMR, 2D NMR, and MS spectrum, respectively. They were obtained from it for the first time.
