Comparing immunogenic and immunomodulatory properties of iPSCs versus bone marrow-derived MSCs

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Aug 19, 2014
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‘Induced pluripotent stem cells have similar immunogenic and more potent immunomodulatory properties compared with bone marrow-derived stromal cells in vitro’, published by Regenerative Medicine earlier this year, found that iPSCs had similar immunogenic properties but more potent immunomodulatory effects than MSCs.

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Aim: To evaluate the in vitro immunogenic and immunomodulatory properties of induced pluripotent stem cells (iPSCs) compared with bone marrow-derived mesenchymal stromal cells (MSCs). Materials & Methods: Mouse embryonic fibroblasts (MEFs) were isolated from C3HeB/FeJ and C57BL/6J mice, and reprogrammed to generate iPSCs. Mixed leukocyte reactions were performed using MHC-matched and -mismatched responder leukocytes and stimulator leukocytes, iPSCs or MSCs. To assess immunogenic potential, iPSCs and MSCs were used as stimulator cells for responder leukocytes. To assess immunomodulatory properties, iPSCs and MSCs were cultured in the presence of stimulator and responder leukocytes. MEFs were used as a control. Results: iPSCs had similar immunogenic properties but more potent immunomodulatory effects than MSCs. Co-culture of MHC-mismatched leukocytes with MHC-matched iPSCs resulted in significantly less responder T-cell proliferation than observed for MHC-mismatched leukocytes alone and at more responder leukocyte concentrations than with MSCs. In addition, MHC-mismatched iPSCs significantly reduced responder T-cell proliferation when co-cultured with MHC-mismatched leukocytes, while MHC-mismatched MSCs did not. Conclusion: These results provide important information when considering the use of iPSCs in place of MSCs in both regenerative and transplantation medicine.

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Regenerative Medicine

Journal, Future Science Group

Regenerative Medicine is an award-winning peer-reviewed journal, in print and web formats. The journal provides a forum to address the important challenges and advances in stem cell research and regenerative medicine, delivering this essential information in concise, clear and attractive article formats. Among other indexing services Regenerative Medicine is listed by MEDLINE/Index Medicus, EMBASE/Excerpta Medica, Chemical Abstracts, Science Citation Index Expanded™ (SciSearch®), Emcare, Biological Abstracts, BIOSIS Previews, Biotechnology Citation Index®, Journal Citation Reports/Science Edition®, Scopus® with an Impact Factor of 2.786 (2014). Each issue contains expertly drafted Reviews, Original Research articles, Perspectives, Editorials, topical insight from international leaders in their field, and additional added-value content. The Senior Editor of the journal is Professor Chris Mason, University College London. You can find out more about Regenerative Medicine at our website (www.future-science-group.com/journalprofile/regenerative-medicine/), where you can find the aims and scope of the journal and details of our international editorial board.

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