title: microRNA-143, down-regulated in osteosarcoma, promotes apoptosis and suppresses tumorigenicity by targeting Bcl-2.
abstract: Deregulated microRNAs and their roles in tumorigenesis are still largely unknown. Here, we focused on the roles of miR-143 in osteosarcoma, as previous reports have suggested its importance in some other types of cancer. We found that miR-143 was down-regulated in osteosarcoma cell lines and primary tumor samples, and the restoration of miR-143 reduced cell viability, promoted cell apoptosis and suppressed tumorigenicity. Additionally, Bcl-2, an important antiapoptotic molecule, was identified to be a novel direct target of miR-143, and the proapoptotic function of miR-143 is further suggested to be mainly through the targeting of Bcl-2 expression. Collectively, our data identify the important roles of miR-143 in osteosarcoma pathogenesis and indicate its potential application in cancer therapy.
authors.affiliation: Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai 200433, PR China.
authors.forename: Hao
authors.initials: H
authors.lastname: Zhang
authors.forename: Xiaobing
authors.initials: X
authors.lastname: Cai
authors.forename: Yang
authors.initials: Y
authors.lastname: Wang
authors.forename: Hao
authors.initials: H
authors.lastname: Tang
authors.forename: Daki
authors.initials: D
authors.lastname: Tong
authors.forename: Fang
authors.initials: F
authors.lastname: Ji
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000818:Animals; D017209:Apoptosis / Q000235:genetics*; D001859:Bone Neoplasms / Q000235:genetics* / Q000378:metabolism; D015536:Down-Regulation; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D016147:Genes, Tumor Suppressor; D019254:Genes, bcl-2; D006801:Humans; D008297:Male; D051379:Mice; D008819:Mice, Nude; D035683:MicroRNAs / Q000235:genetics* / Q000378:metabolism; D008875:Middle Aged; D012516:Osteosarcoma / Q000235:genetics* / Q000378:metabolism; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000096:biosynthesis / Q000235:genetics*; D014162:Transfection; D055815:Young Adult
chemical_list: C542359:MIRN143 microRNA, human; D035683:MicroRNAs; D019253:Proto-Oncogene Proteins c-bcl-2