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Immunological Aspects of Allogeneic Mesenchymal Stem Cell Therapies

Griffin, Matthew D. and Ritter, Thomas and Mahon, Bernard P. (2010) Immunological Aspects of Allogeneic Mesenchymal Stem Cell Therapies. Human Gene Theraphy, 21 (12). pp. 1641-1655.

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Allogeneic mesenchymal stem or stromal cells (MSCs) are proposed as cell therapies for degenerative, inflammatory, and autoimmune diseases. The feasibility of allogeneic MSC therapies rests heavily on the concept that these cells avoid or actively suppress the immunological responses that cause rejection of most allogeneic cells and tissues. In this article the validity of the immune privileged status of allogeneic MSCs is explored in the context of recent literature. Current data that provide the mechanistic basis for immune modulation by MSCs are reviewed with particular attention to how MSCs modify the triggering and effector functions of innate and adaptive immunity. The ability of MSCs to induce regulatory dendritic and T-cell populations is discussed with regard to cell therapy for autoimmune disease. Finally, we examine the evidence for and against the immune privileged status of allogeneic MSCs in vivo. Allogeneic MSCs emerge as cells that are responsive to local signals and exert wide-ranging, predominantly suppressive, effects on innate and adaptive immunity. Nonetheless, these cells also retain a degree of immunogenicity in some circumstances that may limit MSC longevity and attenuate their beneficial effects. Ultimately successful allogeneic cell therapies will rely on an improved understanding of the parameters of MSC–immune system interactions in vivo.

Item Type: Article
Keywords: Immunological Aspects of Allogeneic Mesenchymal Stem Cell Therapies;
Academic Unit: Faculty of Science and Engineering > Biology
Faculty of Science and Engineering > Research Institutes > Institute of Immunology
Item ID: 2419
Depositing User: Dr. Bernard Mahon
Date Deposited: 09 Feb 2011 11:03
Journal or Publication Title: Human Gene Theraphy
Publisher: Mary Ann Liebert, Inc
Refereed: Yes

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