Investigation of the Effective Action Distance Between Hematopoietic Stem/Progenitor Cells and Human Adipose-Derived Stem Cells During Their In Vitro Co-culture.
Summary of "Investigation of the Effective Action Distance Between Hematopoietic Stem/Progenitor Cells and Human Adipose-Derived Stem Cells During Their In Vitro Co-culture."
The in vitro suitable action distance between umbilical cord blood-derived hematopoietic stem/progenitor cells and its feeder cell, human adipose-derived stem cells, during their co-culture, was investigated through a novel transwell co-culture protocol, in which the distance between the two culture chambers where each cell type is growing can be adjusted from 10 to 450 μm. The total cell number was determined with a hemacytometer, and the cell morphology was observed under an inverted microscope each day. After 7 days of co-culture, the fold-expansion, surface antigen expression of CD34(+) and CFU-GM assay of the hematopoietic mononuclear cells (MNCs) were analyzed. The results showed that there was an optimal communication distance at around 350 μm between both types of stem cells during their in vitro co-culture. By using this distance, the UCB-MNCs and CD34(+) cells were expanded by 15.1 ± 0.2 and 5.0 ± 0.1-fold, respectively. It can therefore be concluded that the optimal action distance between stem cells and their supportive cells, when cultured together for 7 days, is of around 350 μm.
Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian, 116024, China.
This article was published in the following journal.
Name: Applied biochemistry and biotechnology
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21647687
- DOI: http://dx.doi.org/10.1007/s12010-011-9295-y
Medical and Biotech [MESH] Definitions
Myeloid Progenitor Cells
Stem cells derived from HEMATOPOIETIC STEM CELLS. Derived from these myeloid progenitor cells are the MEGAKARYOCYTES; ERYTHROID CELLS; MYELOID CELLS; and some DENDRITIC CELLS.
Hematopoietic Stem Cells
Progenitor cells from which all blood cells derive.
Hematopoietic Stem Cell Mobilization
The release of stem cells from the bone marrow into the peripheral blood circulation for the purpose of leukapheresis, prior to stem cell transplantation. Hematopoietic growth factors or chemotherapeutic agents often are used to stimulate the mobilization.
Hematopoietic Stem Cell Transplantation
Transfer of HEMATOPOIETIC STEM CELLS from BONE MARROW or BLOOD between individuals within the same species (TRANSPLANTATION, HOMOLOGOUS) or transfer within the same individual (TRANSPLANTATION, AUTOLOGOUS). Hematopoietic stem cell transplantation has been used as an alternative to BONE MARROW TRANSPLANTATION in the treatment of a variety of neoplasms.
Bipotential angio-hematopoietic stem cells that give rise to both HEMATOPOIETIC STEM CELLS and ENDOTHELIAL CELLS.
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