title: Methanol extract of Elaeagnus glabra, a Korean medicinal plant, inhibits HT1080 tumor cell invasion.
abstract: Elaeagnus glabra (Thunb.), an evergreen shrub with alternate leaves, has been used as a medicinal plant in Korea. Since many plant-derived molecules have inhibitory effects on tumor cell invasion, primarily via suppression of the activity of matrix metalloproteinases (MMPs), we investigated the effect of the methanol extract of E. glabra on tumor cell invasion. The invasiveness of HT1080 human fibrosarcoma cells were reduced in a dose-dependent manner following 24 h treatment of up to 200 microg/ml of the E. glabra extract, at which concentration no cytotoxicity occurred. Furthermore, gelatinolytic activities, and the protein and mRNA levels of MMP-2 and MMP-9 were also suppressed with increasing concentrations of the extract. Given that MMP-2 and MMP-9 are instrumental in tumor cell invasion, it is very likely that the reduction in tumor cell invasion by E. glabra extract is a consequence, at least in part, of suppressed expression of both MMP-2 and MMP-9. Isolation of a molecule(s) responsible for the extract inhibition of tumor cell invasion would pave the way for the development of a new generation of metastasis inhibitors.
authors.affiliation: The Brain Korea 21 Project, Center for Biomedical Human Resources, Gwangju 501-190, Korea.
authors.forename: Li-Hua
authors.initials: LH
authors.lastname: Li
authors.forename: In Kyu
authors.initials: IK
authors.lastname: Baek
authors.forename: Jin Hee
authors.initials: JH
authors.lastname: Kim
authors.forename: Kyung Ho
authors.initials: KH
authors.lastname: Kang
authors.forename: Yang Seok
authors.initials: YS
authors.lastname: Koh
authors.forename: Young Do
authors.initials: YD
authors.lastname: Jung
authors.forename: Chol Kyoon
authors.initials: CK
authors.lastname: Cho
authors.forename: Seok-Yong
authors.initials: SY
authors.lastname: Choi
authors.forename: Boo Ahn
authors.initials: BA
authors.lastname: Shin
mesh_terms: D015152:Blotting, Northern; D015153:Blotting, Western; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects*; D031263:Elaeagnaceae / Q000737:chemistry*; D004791:Enzyme Inhibitors / Q000494:pharmacology*; D015870:Gene Expression / Q000187:drug effects; D006801:Humans; D020778:Matrix Metalloproteinase 2 / Q000187:drug effects; D020780:Matrix Metalloproteinase 9 / Q000187:drug effects; D000432:Methanol; D009369:Neoplasms / Q000188:drug therapy*; D008517:Phytotherapy; D010936:Plant Extracts / Q000494:pharmacology*; D010946:Plants, Medicinal; D012333:RNA, Messenger / Q000032:analysis
chemical_list: D004791:Enzyme Inhibitors; D010936:Plant Extracts; D012333:RNA, Messenger; D020778:Matrix Metalloproteinase 2; D020780:Matrix Metalloproteinase 9; D000432:Methanol