title: [Different impacts of DMSO and RA on GPI-80 expression].
abstract: Our previous studies suggested that GPI-80 expression might be associated with myeloid differentiation. Dimethyl sulfoxide (DMSO) and all-trans-retinoic acid (RA) are two main inducers that can induce HL-60 cell to differentiate down the way of neutrophilic lineage. GPI-80 is a novel member of a human glycosylphosphatidylinositol (GPI)-anchored family that has been proposed as a potential regulator of beta2-integrin-dependent leukocyte adhesion, and is expressed mainly in human neutrophils. RT-PCR, flow cytometry and western-blot assays were used to detect the GPI-80 expression on HL-60 cells induced by DMSO or RA and to analyze the relationship between GPI-80 expression and CD11b or transferrin receptor (CD71) expression. The results showed GPI-80 was slightly expressed on the level of mRNA on RA-induced HL-60 cells by RT-PCR, while using flow cytometry and western-blot assays, We could not detect any GPI-80 expression on these cells, Furthermore, RA suppressed the induction of GPI-80 expression. However, DMSO could clearly derive the GPI-80 expression and this expression correlated well with the increasing dose and duration of DMSO stimulation. GPI-80 positive cells, which were included in CD11b-strongly positive and transferrin receptor-completely negative populations, were sufficiently differentiated cells suggesting that GPI-80 expression is tightly associated with the neutrophilic maturation and can be used as a mature neutrophilic marker. RA inhibits the GPI-80 expression on DMSO induced HL-60 cells suggests that different signal conduction has been activated by DMSO and RA when they induce the HL-60 cells to the neutrophilic differentiation.
authors.affiliation: The Children' Hospital of Zhejiang University School of Medicine, Hangzhou 310003 China.
authors.forename: Jun Fen
authors.initials: JF
authors.lastname: Fu
authors.forename: Yuji
authors.initials: Y
authors.lastname: Takeda
authors.forename: Fujiro
authors.initials: F
authors.lastname: Sendo
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Araki
mesh_terms: D015703:Antigens, CD / Q000235:genetics / Q000378:metabolism; D015153:Blotting, Western; D002454:Cell Differentiation / Q000187:drug effects / Q000235:genetics; D004121:Dimethyl Sulfoxide / Q000494:pharmacology*; D005434:Flow Cytometry; D006023:Glycoproteins / Q000235:genetics / Q000378:metabolism*; D018922:HL-60 Cells; D006801:Humans; D011990:Receptors, Transferrin / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014212:Tretinoin / Q000494:pharmacology*
chemical_list: D015703:Antigens, CD; C068126:CD71 antigen; D006023:Glycoproteins; D011990:Receptors, Transferrin; D014212:Tretinoin; D004121:Dimethyl Sulfoxide