title: Involvement of SHP-1, a phosphotyrosine phosphatase, during myeloid cell differentiation in acute promyelocytic leukemia cell lines.
abstract: We investigated the modulation of the expression and phosphatase activity of SHP-1 during granulocytic differentiation of human myeloid leukemia cell line, HL60 and t(15;17) positive APL cell line, HT93, in response to all-trans retinoic acid (ATRA) or dimethylsulfoxide (DMSO). ATRA induced differentiation in both cell lines which was associated with marked growth inhibition and S-phase reduction. On the other hand, DMSO induced it only in HL60 without obvious growth inhibition and S-phase reduction. The expression and phosphatase activity of SHP-1 were upregulated only when the 2 cell lines were differentiated to granulocytes. Furthermore, the changes were not dependent on the inducers or the growth inhibition. These findings suggest that SHP-1 is involved in common myeloid differentiation, and that upregulation of SHP-1 is not always related to myeloid cell growth.
authors.affiliation: First Department of Internal Medicine, Niigata University School of Medicine, Niigata City, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Uesugi
authors.forename: I
authors.initials: I
authors.lastname: Fuse
authors.forename: K
authors.initials: K
authors.lastname: Toba
authors.forename: K
authors.initials: K
authors.lastname: Kishi
authors.forename: T
authors.initials: T
authors.lastname: Furukawa
authors.forename: T
authors.initials: T
authors.lastname: Koike
authors.forename: Y
authors.initials: Y
authors.lastname: Aizawa
mesh_terms: D002453:Cell Cycle / Q000187:drug effects; D002454:Cell Differentiation / Q000187:drug effects; D002455:Cell Division / Q000187:drug effects; D004121:Dimethyl Sulfoxide / Q000494:pharmacology; D015971:Gene Expression Regulation, Enzymologic; D006098:Granulocytes / Q000166:cytology / Q000201:enzymology*; D018922:HL-60 Cells / Q000166:cytology / Q000201:enzymology*; D006801:Humans; D047908:Intracellular Signaling Peptides and Proteins; D007700:Kinetics; D015473:Leukemia, Promyelocytic, Acute / Q000201:enzymology* / Q000473:pathology*; D054592:Protein Tyrosine Phosphatase, Non-Receptor Type 11; D053824:Protein Tyrosine Phosphatase, Non-Receptor Type 6; D017027:Protein Tyrosine Phosphatases / Q000235:genetics* / Q000378:metabolism*; D016196:S Phase; D054593:SH2 Domain-Containing Protein Tyrosine Phosphatases; D013997:Time Factors; D014212:Tretinoin / Q000494:pharmacology; D014407:Tumor Cells, Cultured; D018909:src Homology Domains
chemical_list: D047908:Intracellular Signaling Peptides and Proteins; D014212:Tretinoin; C516724:PTPN11 protein, human; C509249:PTPN6 protein, human; D054592:Protein Tyrosine Phosphatase, Non-Receptor Type 11; D053824:Protein Tyrosine Phosphatase, Non-Receptor Type 6; D017027:Protein Tyrosine Phosphatases; D054593:SH2 Domain-Containing Protein Tyrosine Phosphatases; D004121:Dimethyl Sulfoxide