title: Sambucus Williamsii Hance Promotes MC3T3-E1 Cells Proliferation and Differentiation via BMP-2/Smad/p38/JNK/Runx2 Signaling Pathway.
abstract: The 50% ethanol elution fractions of root-bark of Sambucus Williamsii Hance (rbSWH) evaluated the effect of proliferation and differentiation on preosteoblast MC3T3-E1 cell, and the mechanism of actions. We found that rbSWH(30, 60, and 90 µg/mL) can enhance cell proliferation by MTT assay and promote alkaline phosphatase (ALP) and bone Gla protein (BGP) activities, type I collagen (Col-I) synthesis, and mineralization nodule formation in primary cultured osteoblasts. The results showed that rbSWH can increase mRNA levels of BMP-2 and Runx2 using real-time reverse transcription-quantitative polymerase chain reaction, whereas the BMP-2 antagonist Noggin attenuated the increase of ALP activity induced by rbSWH, indicating that BMP-2 expression was required for the action of rbSWH in osteoblastic. We also found that rbSWH can enhance the expressions of BMP-2, BMPRIB, BMPRII, phosphorylation of Smad, JNK and p38, and Runx2 proteins by western blotting. In addition, pretreatment of cells with p38 inhibitor (SB203580) or JNK inhibitor (SP600125) can antagonize the elevation of BMP-2 expression, ALP activity, and cell viability induced by rbSWH. Taken together, our results provided an evidence that rbSWH can promote MC3T3-E1 cell proliferation and differentiation via BMP-2/Smad/p38/JNK/Runx2 signaling pathway.
authors.affiliation: Key laboratory of Chinese Materia Medica, Ministry of Education, Heilongjiang University of Chinese Medicine, Haerbin, 150040, China.
authors.forename: Bingyou
authors.initials: B
authors.lastname: Yang
authors.affiliation: Key laboratory of Chinese Materia Medica, Ministry of Education, Heilongjiang University of Chinese Medicine, Haerbin, 150040, China.
authors.forename: Xiaoying
authors.initials: X
authors.lastname: Lin
authors.affiliation: Key laboratory of Chinese Materia Medica, Ministry of Education, Heilongjiang University of Chinese Medicine, Haerbin, 150040, China.
authors.forename: Chunli
authors.initials: C
authors.lastname: Yang
authors.affiliation: Key laboratory of Chinese Materia Medica, Ministry of Education, Heilongjiang University of Chinese Medicine, Haerbin, 150040, China.
authors.forename: Jinyan
authors.initials: J
authors.lastname: Tan
authors.affiliation: Department of Obstetrics and Gynecology, National Key Laboratory of Gynecology, First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, 150040, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.affiliation: Key laboratory of Chinese Materia Medica, Ministry of Education, Heilongjiang University of Chinese Medicine, Haerbin, 150040, China.
authors.forename: Haixue
authors.initials: H
authors.lastname: Kuang
mesh_terms: D000469:Alkaline Phosphatase / Q000378:metabolism; D055396:Bone Morphogenetic Protein 2; D002454:Cell Differentiation / Q000187:drug effects*; D049109:Cell Proliferation; D050659:Core Binding Factor Alpha 1 Subunit / Q000378:metabolism; D005786:Gene Expression Regulation; D020935:MAP Kinase Signaling System / Q000187:drug effects; D010006:Osteoblasts / Q000187:drug effects; D010766:Phosphorylation; D028321:Plant Preparations / Q000494:pharmacology*; D012333:RNA, Messenger / Q000378:metabolism; D027923:Sambucus; D015398:Signal Transduction / Q000235:genetics
chemical_list: C525718:BMP2 protein, human; D055396:Bone Morphogenetic Protein 2; D050659:Core Binding Factor Alpha 1 Subunit; D028321:Plant Preparations; D012333:RNA, Messenger; D000469:Alkaline Phosphatase
keywords: BMP-2; MAPK; MC3T3-E1; Runx2; Sambucus Williamsii Hance; bone fractures