Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA106327 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Human bone marrow is a complex, diversified and well-organized hematopoietic network changing composition with age. The purpose of this study was to analyze variations in relative precursor B cell abundance in bone marrow with age by means of global gene expression profiling. RNA was isolated from composite bone marrow from 25 healthy children, adolescents and adults age 2 months to 28 years. As reference transcript for precursor B cells we used recombination activating gene RAG1 exploring the data for other transcripts showing the same profile as RAG1 with age. We identified 54 genes with correlated expression profiles to RAG1 (r ? 0.9, p = 0), characterized by high expression at 3 - 20 months followed by a fast decline to lower signal levels maintained until early adulthood. Immunophenotyping from a similar healthy age-matched cohort (n = 37) showed a comparable decrease of precursor B cells. Of the 54 genes 15 were characteristically B cell associated representing cell surface molecules (CD19, CD72, CD79A, CD79B, CD180, IGL@, IGLL1, VPREB1, VPREB3), a signal transduction molecule (BLNK) and transcription factors (DNTT, EBF1, PAX5, POU2AF1, RAG2). Of the remaining transcripts some may represent novel B cell transcripts or genes involved in control of B cells. Bone marrow was obtained from healthy children eligible for elective minor surgery and voluntary health care workers. The bone marrow samples (2.5ml) were immediately after aspiration transferred to PAXgene tubes for mRNA stabilization before RNA extraction and hybridization on Affymetrix microarrays. To that end, the study presents a picture of the total marrow activity with minimal manipulation that would otherwise influence gene expression results. We used microarrays to determine age-related changes in precursor B cell transcripts in bone marrow from 25 healthy children and adults and searched for other transcripts showing the same expression profile with age.
2009-12-30 | E-GEOD-11504 | biostudies-arrayexpress
Project description:Human bone marrow is a complex, diversified and well-organized hematopoietic network changing composition with age. The purpose of this study was to analyze variations in relative precursor B cell abundance in bone marrow with age by means of global gene expression profiling. RNA was isolated from composite bone marrow from 25 healthy children, adolescents and adults age 2 months to 28 years. As reference transcript for precursor B cells we used recombination activating gene RAG1 exploring the data for other transcripts showing the same profile as RAG1 with age. We identified 54 genes with correlated expression profiles to RAG1 (r ≥ 0.9, p = 0), characterized by high expression at 3 - 20 months followed by a fast decline to lower signal levels maintained until early adulthood. Immunophenotyping from a similar healthy age-matched cohort (n = 37) showed a comparable decrease of precursor B cells. Of the 54 genes 15 were characteristically B cell associated representing cell surface molecules (CD19, CD72, CD79A, CD79B, CD180, IGL@, IGLL1, VPREB1, VPREB3), a signal transduction molecule (BLNK) and transcription factors (DNTT, EBF1, PAX5, POU2AF1, RAG2). Of the remaining transcripts some may represent novel B cell transcripts or genes involved in control of B cells. Bone marrow was obtained from healthy children eligible for elective minor surgery and voluntary health care workers. The bone marrow samples (2.5ml) were immediately after aspiration transferred to PAXgene tubes for mRNA stabilization before RNA extraction and hybridization on Affymetrix microarrays. To that end, the study presents a picture of the total marrow activity with minimal manipulation that would otherwise influence gene expression results.
2009-12-31 | GSE11504 | GEO
Project description:Expression data from human healthy CD133+ bone marrow EPCs
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Project description:Expression data from bone marrow CD34+ cells of MDS patients and healthy controls
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Project description:Clonal hematopoiesis of indeterminate potential is prevalent in elderly individuals and associated with increased risks of all-cause mortality and cardiovascular disease. However, mouse models to study the dynamics of clonal hematopoiesis and its consequences on the cardiovascular system under homeostatic conditions are lacking. We used a model of clonal hematopoiesis using adoptive transfer of unfractionated ten-eleven translocation 2-mutant (Tet2-mutant) bone marrow cells into nonirradiated mice. Consistent with age-related clonal hematopoiesis observed in humans, these mice displayed a progressive expansion of Tet2-deficient cells in multiple hematopoietic stem and progenitor cell fractions and blood cell lineages. The expansion of the Tet2-mutant fraction was also observed in bone marrow-derived CCR+ myeloid cell populations within the heart, but there was a negligible impact on the yolk sac-derived CCR2- cardiac resident macrophage population. Transcriptome profiling revealed an enhanced inflammatory signature in the donor-derived macrophages isolated from the heart. Mice receiving Tet2-deficient bone marrow cells spontaneously developed age-related cardiac dysfunction characterized by greater hypertrophy and fibrosis. Altogether, we show that Tet2- mediated hematopoiesis contributes to cardiac dysfunction in a nonconditioned setting that faithfully models the human clonal hematopoiesis in unperturbed bone marrow. Our data support clinical findings that clonal hematopoiesis per se may contribute to diminished health span.
2020-03-12 | GSE146812 | GEO
Project description:Expression data from mouse bone marrow adipocytes with age
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Project description:Expression data from human bone marrow hematopoietic stem cells
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Project description:The aim of this study was to characterize the age-related gene expression profiles between bone marrow adipocytes and peripheral white adipocytes. Alterations of gene expression with aging were analyzed in bone marrow and peripheral white adipocytes isolated from C57BL/6J male mice using Affymetrix Mouse Gene 1.0 ST arrays. Bone marrow adipocytes and peripheral white adipocytes (n=6-10 animals per group) were isolated from male C57BL/6J mice (6-months, 14-months and 18-months of age). Samples were grouped into cell type (bone marrow adipocytes vs. peripheral adipocytes) and age (6-month (6M), 14-month (14M) and 18-month (18M)).
2011-11-29 | E-GEOD-25905 | biostudies-arrayexpress
Project description:In this series we have analyzed the effect of donor age on the gene expression profile of mesenchymal stromal cells (alternatively named mesenchymal stem cells; MSC) from human bone marrow. Cells were taken from bone marrow aspirates from iliac crest (BM) of healthy donors or from the caput femoris (HIP) of elderly patients that received femoral head prosthesis.
2009-06-12 | GSE12274 | GEO