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Identification of key genes responsible for cytokine-induced erythroid and myeloid differentiation and switching of hematopoietic stem cells by RAGE

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Cell Research 2006年第12期16卷 923-939页

作者： Kyung L Chin Delia C Tang Griffin P Rodgers Molecular and Clinical Hematology Branch (MCHB) National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)National Institutes of HealthBethesdaMD 20892USA

We utilized a unique culture system to analyze the expression patterns of gene,protein,and cell surface antigen,and the biological process of the related genes in erythroid and myeloid differentiation and switching of hematopoieticstem cells(HSCs)in response to cytokine ***-specific fragments(266)identified from five populationsof cytokine-stimulated HSCs were categorized into three groups:(1)expressed specifically in a single cell population;(2)expressed in two cell populations,and(3)expressed in three or more populations. Of 145 defined cDNAs,three(2%)were novel *** two-dimensional gel electrophoresis and flow cytometry analyses showed overlappedand distinguished protein expression profiles in the cell populations *** process mapping of mRNAsexpressed in erythroid and myeloid lineages indicated that mRNAs shared by both lineages attended 'core processes,'whereas genes specifically expressed in either lineage alone were related to specific processes or cellular *** this study support the hypothesis that committed HSCs(E14 or G14)cells can still be redirected to develop intomyeloid or erythroid cells when erythropoietin(EPO)is replaced with granulocyte-colony stimulating factor(G-CSF)under erythroid-cultured condition or G-CSF with EPO in myeloid-cultured environment,*** results sug-gest that genes or proteins co-expressed in erythroid and myeloid lineages may be essential for the lineage maintenanceand switching in hematopoiesis.

关键词： lineage switching hematopoietic stem cells erythroid/myeloid differentiation co-expression biological processes cytokines

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