title: Transcriptome analysis of monocytic leukemia cell differentiation.
abstract: The human leukemia cell line U937 is a well-established model for studying monocytic cell differentiation. We used a modified protocol (SADE) of serial analysis of gene expression (SAGE) and developed a SADE linker-anchored PCR assay to investigate the pattern of expression of known genes and to identify new transcripts in proliferating cells and during cell growth arrest and differentiation. We implemented new informatic tools to compare expression profiles before and after exposure of cells to differentiation inducers. From the analysis of 47,388 tags, we identified 13,806 distinct transcripts, 265 of which showed significant variations (P<0.01). Among 1219 well-identified genes, major changes concerned transcription and translation components, cytoskeleton, and macrophage-specific genes. Nearly half of the tags, some of them expressed at high levels, matched partially characterized genes or ESTs, or revealed yet-unknown transcripts, providing a wealth of new candidate genes that may reveal novel aspects of terminal monocytic differentiation.
authors.affiliation: Institut de Génétique Humaine, UPR CNRS 1142, Montpellier, France.
authors.forename: David
authors.initials: D
authors.lastname: Piquemal
authors.forename: Thérèse
authors.initials: T
authors.lastname: Commes
authors.forename: Laurent
authors.initials: L
authors.lastname: Manchon
authors.forename: Mireille
authors.initials: M
authors.lastname: Lejeune
authors.forename: Conchita
authors.initials: C
authors.lastname: Ferraz
authors.forename: Denis
authors.initials: D
authors.lastname: Pugnère
authors.forename: Jacques
authors.initials: J
authors.lastname: Demaille
authors.forename: Jean-Marc
authors.initials: JM
authors.lastname: Elalouf
authors.forename: Jacques
authors.initials: J
authors.lastname: Marti
mesh_terms: D002454:Cell Differentiation / Q000235:genetics*; D003599:Cytoskeleton / Q000235:genetics / Q000378:metabolism; D020869:Gene Expression Profiling; D015972:Gene Expression Regulation, Neoplastic; D015723:Gene Library; D006801:Humans; D007951:Leukemia, Myeloid / Q000235:genetics* / Q000473:pathology*; D014158:Transcription, Genetic; D020298:U937 Cells