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dc.contributor.authorDeutsch, Eric R.en_US
dc.date.accessioned2010-01-29T19:52:47Z
dc.date.available2010-01-29T19:52:47Z
dc.date.issued2009-07-27en_US
dc.identifier.urihttp://hdl.handle.net/1853/31784
dc.description.abstractStem cell synthesized extracellular matrix (ECM) may serve as a replacement for current bone grafting techniques. The overall goal of this thesis is to quantify the osteoinductivity of the ECM produced by human amniotic fluid stem cells (AFS cells), compare it to that of human mesenchymal stem cells (MSC), and assess its potential for use in bone tissue engineering therapies. Each stem cell type was cultured in osteogenic media to produce the ECM, which was then decellularized via freeze/thaw cycling and DNase treatment. The success of the decellularization was confirmed with live/dead staining and DNA quantification. A series of in vitro studies were performed to evaluate the characteristics of the ECM relevant to a bone tissue engineering therapy. Reseeded MSCs were able to attach to and proliferate on both ECM types in both 2D and 3D culture. In 2D, cells cultured on both ECM types showed increased levels of calcium deposition. Additionally, cells cultured on the MSC ECM showed increased alkaline phosphatase activity. A synergistic effect on osteogenic differentiation was observed when the osteoinductive factor dexamethasone was added to the culture. In 3D, both ECM types increased the mineralized matrix production of reseeded MSCs. The AFS ECM had a greater effect than the MSC ECM. When ECM was used to treat a rat femoral segmental defect in vivo, it was found that each ECM type increased the rate of bridging of the defect when compared to collagen coated scaffolds. However the ECM did not have a significant effect on the volume of mineralized matrix within the defect site in this study.en_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectBoneen_US
dc.subjectTissue engineeringen_US
dc.subjectStem cellsen_US
dc.subjectExtracellular matrixen_US
dc.subjectMesenchymal stem cellsen_US
dc.subjectAmniotic fluid stem cellsen_US
dc.subject.lcshExtracellular matrix
dc.subject.lcshStem cells
dc.subject.lcshBone-grafting
dc.subject.lcshTissue engineering
dc.titleThe use of stem cell synthesized extracellular matrix for bone repairen_US
dc.typeThesisen_US
dc.description.degreeM.S.en_US
dc.contributor.departmentMechanical Engineeringen_US
dc.description.advisorCommittee Chair: Guldberg, Robert; Committee Member: McDevitt, Todd; Committee Member: Zamir, Evanen_US


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