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The shortage of donors for organ transplantation and also to treat degenerative diseases has led to the development of the new field of regenerative medicine. One aim of this field, in addition to in vivo induction of endogenous tissue regeneration, is to utilize stem cells as a supplementary source of cells to repair or replace tissues or organs that have ceased to function owing to ageing or autoimmunity. Embryonic stem cells hold promise in this respect because of their developmental capacity to generate all tissues within the body. More recently, the discovery of induced pluripotent stem cells, somatic cells reprogrammed to a primitive embryonic-like state by the introduction of pluripotency factors, may also act as an important cell source for cell replacement therapy. However, before cell replacement therapy can become a reality, one must consider how to overcome the potential transplant rejection of stem cell-derived products. There are several potential ways to circumvent the hurdles presented by the immune system in this setting, not least the induction of immunological tolerance in the host. In this review, we consider this and other approaches for engendering acceptance of stem cell-derived tissues.

Original publication

DOI

10.1586/eci.10.20

Type

Journal article

Journal

Expert Rev Clin Immunol

Publication Date

05/2010

Volume

6

Pages

435 - 448

Keywords

Adult, Animals, Dendritic Cells, Embryonic Stem Cells, Female, Graft Rejection, Humans, Immunosuppression, Induced Pluripotent Stem Cells, Male, Mice, T-Lymphocytes, Regulatory, Transplantation Tolerance, Transplantation, Autologous