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Application of Porous Glycosaminoglycan-based Scaffolds for Expansion of Human Cord Blood Stem Cells in Perfusion Culture by Cheul H. Cho; James F. Eliason; Howard W.T. Matthew is a Engineering article available to read on EtoBox.

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## Abstract __In vitro__ expansion of hematopoietic stem cells (HSCs) has been employed to obtain sufficient numbers of stem cells for successful engraftment after HSC transplantation. A three‐dimensional perfusion bioreactor system with a heparin‐chitosan scaffold was designed and evaluated for its capability to support maintenance and expansion of HSCs. Porous chitosan scaffolds were fabricated by a freeze‐drying technique and __N__‐desulfated heparin was covalently immobilized within the scaffolds using carbodiimide chemistry. CD34+ HSCs isolated from umbilical cord blood by immunomagnetic separation were cultured within the porous scaffold in a perfusion bioreactor system. Control cultures were maintained on dishes coated with similar heparin‐chitosan films. Oxygen uptake was measured during the culture period. After 7 days of culture, scaffolds were harvested for analysis. Cellular phenotype and HSC characteristics were evaluated via flow cytometry and colony forming unit assays. The results indicate good cell retention and proliferation within the perfused scaffolds. Oxygen consumption in the perfusion bioreactor system increased continuously during the culture, indicating st

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Author

Cheul H. Cho; James F. Eliason; Howard W.T. Matthew

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1549-3296)

Published

2007

Language

EN

Field

Engineering (Physical Sciences)