Detailed Information on Publication Record
2006
Transcription density map as a new tool for evaluation of various expression profiles: Ex vivo differentiation of CD34+ cells
KOUTNÁ, Irena, Petr KRONTORÁD, Lenka TESAŘOVÁ, Martin KLABUSAY, Viera HRABČÁKOVÁ et. al.Basic information
Original name
Transcription density map as a new tool for evaluation of various expression profiles: Ex vivo differentiation of CD34+ cells
Name in Czech
Hustotní transkripční mapy jako nový nástroj pro porovnávání expresních profilů; Ex vivo diferenciace CD34+ buněk
Authors
KOUTNÁ, Irena (203 Czech Republic, guarantor), Petr KRONTORÁD (203 Czech Republic), Lenka TESAŘOVÁ (203 Czech Republic), Martin KLABUSAY (203 Czech Republic), Viera HRABČÁKOVÁ (703 Slovakia) and Michal KOZUBEK (203 Czech Republic)
Edition
ISREC Conference on Cancer Research, 2006
Other information
Language
English
Type of outcome
Konferenční abstrakt
Field of Study
Genetics and molecular biology
Country of publisher
Switzerland
Confidentiality degree
není předmětem státního či obchodního tajemství
RIV identification code
RIV/00216224:14330/06:00040704
Organization unit
Faculty of Informatics
Keywords in English
microarrays; gene expression
Tags
Tags
International impact, Reviewed
Změněno: 7/6/2010 11:40, doc. RNDr. Irena Koutná, Ph.D.
Abstract
V originále
Microarrays technology is a very powerful tool for monitoring gene expression. In our experiments with CD34+ differentiation assays, we used Transcription density map (TDM) as a new tool for evaluation of expression patterns in enriched populations of different cell lineages. Hematopoietic stem cells (enriched in fraction of CD34+ cells) have the ability to regenerate hematopoiesis. This potential is clinically used in transplanting bone marrow or peripheral blood stem cells. TDM is an improved transcription map. Genes are mapped on chromosomes according to their offset in basepairs (instead of sequential ordering used by traditional transcription maps (TMs)). TDM clearly and exactly shows the differences in expression patterns of evaluated populations. We can see the differences in expression level between individual genes and also between gene families or chromosome regions. On the basis of TDM we can evaluate expression patterns in order to exclude potentially cancerous cell population during transplantation. We present the possibilities and the potential of TDM by evaluation of two different ways of immunomagnetic separation (positive selection of CD34+ cells and negative selection of Lin- cells) of CD34+ cells. The cells were ex vivo differentiated to granulocytes like cells. CD34+ and Lin- cells were enriched from peripheral blood stem cell (PBSC) grafts and bone marrow of patients with non-Hodgkin's lymphoma. Isolated cells were cultivated in the presence of peripheral blood stem cell cytokines, FLT-3 ligand, interleukin 3, interleukin 6, and granulocyte colony-stimulating factor. During 0th, 4 th, 7 th,9 th, 11 th and 14 th day, the cells were harvested and analyzed. cDNA microarrays analysis in combination with TDM of cultured hematopoietic cells confirmed the equivalence of the two enrichment methods for PBSC samples and helped us to characterize ex vivo cultured differentiated cells. Our methodological approach is helpful for characterizing ex vivo cultured hematopoietic cells and in addition it is also suitable for more general purposes. Equivalence of CD34+ and Lin- selection methods from PBSC samples confirmed by cDNA microarrays may have an implication for graft manipulation in an experimental setting of hematopoietic transplantation
Links
| GP301/04/P136, research and development project |
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| MSM0021622419, plan (intention) |
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| 1A8241, research and development project |
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