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Comparative gene expression in hematopoietic progenitor cells derived from embryonic stem cells
Shi-Jiang Lu1, Fei Li, Loyda Vida
1Department of Pediatrics, College of Medicine, University of Illinois at Chicago, 60612, USA.
Experimental Hematology
|February 2, 2002
Summary
Rhesus monkey and mouse embryonic stem cell-derived hematopoietic progenitors show altered gene expression compared to bone marrow cells. These molecular differences may indicate distinct cell subpopulations or modified stem cell properties.
Area of Science:
- Hematology
- Stem Cell Biology
- Molecular Biology
Background:
- Embryonic stem (ES) cells offer a potential source for generating hematopoietic progenitor cells.
- Understanding the molecular characteristics of ES cell-derived hematopoietic progenitors is crucial for their therapeutic applications.
Purpose of the Study:
- To molecularly characterize hematopoietic progenitor cells derived from rhesus monkey ES cell differentiation.
- To compare gene expression profiles of ES cell-derived progenitors with those from bone marrow.
Main Methods:
- Purification of CD34(+) and CD34(+)CD38(-) cells from rhesus monkey ES cell cultures.
- Semiquantitative polymerase chain reaction analysis of hematopoietic development genes.
- Comparison with rhesus monkey and mouse bone marrow (BM) and mouse ES cell-derived cells.
Main Results:
- Rhesus monkey ES cell-derived progenitors showed similar gene expression to BM cells, with notable exceptions.
- Flt3 gene expression was undetectable in rhesus monkey ES cell-derived progenitors but present in BM cells.
- Integrin alphaL and IL-6 receptor genes showed reduced expression in ES cell-derived progenitors compared to BM cells.
- Murine ES cell-derived progenitors also exhibited absent or reduced expression of flt3, integrin alphaL, and IL-6 receptor compared to mouse BM cells.
Conclusions:
- Hematopoietic progenitors derived from both rhesus monkey and mouse ES cells display distinct gene expression patterns compared to their bone marrow counterparts.
- These observed molecular alterations may stem from differences in cell subpopulations or modified biological properties of ES cell-derived hematopoietic stem cells.