title: Enhanced erythroid cell differentiation in hypoxic condition is in part contributed by miR-210.
abstract: Erythropoiesis, a process of erythroid production, is controlled by several factors including oxygen level. In this study, the effect of oxygen tension on erythropoiesis was investigated in K562 erythroleukemic cell line and erythroid progenitor cells derived from normal and β-thalassemia/hemoglobin (Hb) E individuals. The enhanced erythroid differentiation specific markers including increased levels of α-, β- and γ-globin gene expressions, numbers of HbF positive cells and the presence of glycophorin A surface marker were observed during cell culture under hypoxic atmosphere. The result also showed that miR-210, one of the hypoxia-induced miRNAs, was up-regulated in K562 and β-thalassemia/HbE progenitor cells cultured under hypoxic condition. Inhibition of miR-210 expression leads to reduction of the globin gene expression and delayed maturation in K562 and erythroid progenitor cells. This indicated that miR-210 contributes to hypoxia-induced erythroid differentiation in both K562 cells and β-thalassemia/HbE erythroid progenitor cells.
authors.affiliation: Department of Clinical Microscopy, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand.
authors.forename: Orawan
authors.initials: O
authors.lastname: Sarakul
authors.forename: Phantip
authors.initials: P
authors.lastname: Vattanaviboon
authors.forename: Yuka
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Suthat
authors.initials: S
authors.lastname: Fucharoen
authors.forename: Yasunobu
authors.initials: Y
authors.lastname: Abe
authors.forename: Saovaros
authors.initials: S
authors.lastname: Svasti
authors.forename: Tsukuru
authors.initials: T
authors.lastname: Umemura
mesh_terms: D018952:Antigens, CD34 / Q000378:metabolism; D002454:Cell Differentiation; D015687:Cell Hypoxia; D041905:Erythroid Cells / Q000166:cytology* / Q000378:metabolism*; D015672:Erythroid Precursor Cells / Q000166:cytology* / Q000378:metabolism*; D004920:Erythropoiesis / Q000235:genetics*; D005786:Gene Expression Regulation; D005914:Globins / Q000235:genetics / Q000378:metabolism; D006801:Humans; D016130:Immunophenotyping; D020014:K562 Cells; D035683:MicroRNAs / Q000235:genetics*; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D017086:beta-Thalassemia / Q000235:genetics / Q000378:metabolism
chemical_list: D018952:Antigens, CD34; C543800:MIRN210 microRNA, human; D035683:MicroRNAs; D012333:RNA, Messenger; D005914:Globins