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Thermo-rheological responsive microcapsules for time-dependent controlled release of human mesenchymal stromal cells
Linköping University, Department of Physics, Chemistry and Biology, Sensor and Actuator Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-3274-6029
Linköping University, Department of Clinical and Experimental Medicine. Linköping University, Faculty of Medicine and Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Division of Cell Biology. Linköping University, Faculty of Medicine and Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine. Linköping University, Faculty of Medicine and Health Sciences.
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2017 (English)In: Biomaterials Science, ISSN 2047-4830, E-ISSN 2047-4849, Vol. 5, no 11, 2241-2250 p.Article in journal (Refereed) Published
Abstract [en]

Human mesenchymal stromal cells (hMSCs) are adult-source cells that have been extensively evaluated for cell-based therapies. hMSCs delivered by intravascular injection have been reported to accumulate at the sites of injury to promote tissue repair and can also be employed as vectors for the delivery of therapeutic genes. However, the full potential of hMSCs remains limited as the cells are lost after injection due to anoikis and the adverse pathologic environment. Encapsulation of cells has been proposed as a means of increasing cell viability. However, controlling the release of therapeutic cells over time to target tissue still remains a challenge today. Here, we report the design and development of thermo-rheological responsive hydrogels that allow for precise, time dependent controlled-release of hMSCs. The encapsulated hMSCs retained good viability from 76% to 87% dependent upon the hydrogel compositions. We demonstrated the design of different blended hydrogel composites with modulated strength (S parameter) and looseness of hydrogel networks (N parameter) to control the release of hMSCs from thermoresponsive hydrogel capsules. We further showed the feasibility for controlled-release of encapsulated hMSCs within 3D matrix scaffolds. We reported for the first time by a systematic analysis that there is a direct correlation between the thermo-rheological properties associated with the degradation of the hydrogel composite and the cell release kinetics. This work therefore provides new insights into the further development of smart carrier systems for stem cell therapy.

Place, publisher, year, edition, pages
ROYAL SOC CHEMISTRY , 2017. Vol. 5, no 11, 2241-2250 p.
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Biomaterials Science
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URN: urn:nbn:se:liu:diva-143087DOI: 10.1039/c7bm00663bISI: 000413769500005PubMedID: 28972602OAI: oai:DiVA.org:liu-143087DiVA: diva2:1159426
Note

Funding Agencies|Swedish Foundation for Strategic Research [RBP14-0028]

Available from: 2017-11-22 Created: 2017-11-22 Last updated: 2017-11-22

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Mak, Wing CheungMagne, B.Cheung, KittAtanasova, D.Griffith, May
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Sensor and Actuator SystemsFaculty of Science & EngineeringDepartment of Clinical and Experimental MedicineFaculty of Medicine and Health SciencesDivision of Cell Biology
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