title: Structure Identification of Triterpene from the Mushroom Pleurotus eryngii with Inhibitory Effects Against Breast Cancer.
abstract: Breast cancer is the leading cause of death among women, with approximately 1 million diagnoses annually. Triterpenoids, which have cancer preventive or anti-tumour efficacy towards various tumour cells, may play a role in breast cancer prevention. In our previous study, an acetic ether (EtOAc) fraction from the sporocarp of the edible mushroom Pleurotus eryngii (P. eryngii) exhibited significant tumour cell growth inhibition both in vitro and in vivo. In this study, three pentacyclic triterpenoid compounds (1-3) were isolated from EtOAc extracts using chromatographic separation and were identified using nuclear magnetic resonance (NMR) and mass spectrometry (MS). The compounds were 2, 3, 6, 23-tetrahydroxy-urs-12-en-28 oic acid (1), 2,3,23-trihydroxy-urs-12-en-28 oic acid (2) and lupeol (3). All three purified triterpenes showed significant inhibitory activity against breast cancer MCF-7 cell lines in vitro, with the greatest activity exhibited by compound 1, followed by compound 2 and 3. The IC(50) values were 15.71, 48 and 66.89 μM, respectively. Our study may help elucidate the health benefits of P. eryngii mushroom consumption.
authors.affiliation: School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
authors.forename: Zhaohui
authors.initials: Z
authors.lastname: Xue
authors.forename: Jiaomei
authors.initials: J
authors.lastname: Li
authors.forename: Aiqing
authors.initials: A
authors.lastname: Cheng
authors.forename: Wancong
authors.initials: W
authors.lastname: Yu
authors.forename: Zhijun
authors.initials: Z
authors.lastname: Zhang
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Kou
authors.forename: Fengjuan
authors.initials: F
authors.lastname: Zhou
mesh_terms: D000363:Agaricales; D000972:Antineoplastic Agents, Phytogenic / Q000494:pharmacology / Q000627:therapeutic use; D001688:Biological Products / Q000494:pharmacology / Q000627:therapeutic use*; D001943:Breast Neoplasms / Q000188:drug therapy*; D005260:Female; D006801:Humans; D020128:Inhibitory Concentration 50; D061986:MCF-7 Cells; D015394:Molecular Structure; D053978:Pentacyclic Triterpenes / Q000302:isolation & purification / Q000494:pharmacology / Q000627:therapeutic use*; D020076:Pleurotus / Q000737:chemistry*; D014315:Triterpenes / Q000494:pharmacology / Q000627:therapeutic use*; D000094042:Lupanes
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D001688:Biological Products; D053978:Pentacyclic Triterpenes; D014315:Triterpenes; C000607433:2,3,23-trihydroxy-urs-12-en-28 oic acid; C000607432:2,3,6,23-tetrahydroxy-urs-12-en-28 oic acid; C010480:lupeol; D000094042:Lupanes