| Human embryonic stem cell-extracts inhibit the differentiation and function of monocyte-derived dendritic cells. | |
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MedLine Citation:
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PMID: 20711689 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Embryonic stem cells (ESC) possess inherent properties of immune privilege with the capacity to evade allogeneic immune responses. Moreover, ESCs have been shown to prevent immune activation in response to third party antigen presenting cells in vitro and have the capacity to promote allograft survival in vivo. However, clinical use of human ESCs to treat immunological disorders may risk teratoma or ectopic tissue formation. Here, we show that cellular extracts from both human and mouse ESCs retain the immune modulatory properties of intact cells. ESC-extracts that contained 12-24 μg of total protein effectively prevented T cell proliferation in allogeneic mixed lymphocyte reactions (MLR), whereas control fibroblast extracts did not affect proliferation. Cellular mechanisms underlying hESC extract-mediated immune modulation involve the maturation of monocyte derived dendritic cells (mDC). hESC extract-treated mDCs had reduced surface expression of co-stimulatory and maturation markers CD80, HLA-DR and CD83 and secreted lower levels of IL12p40. Accordingly, hESC extract-treated DCs were found to be poor stimulators of purified allogeneic T cells compared to those DCs treated with vehicle or fibroblast extracts. Our results demonstrate that ESC extracts retain the immune modulatory properties of ESCs and for the first time demonstrates that ESC derived factors can inhibit human mDC maturation and function. |
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Authors:
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Kanishka Mohib; David Allan; Lisheng Wang |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Stem cell reviews Volume: 6 ISSN: 1558-6804 ISO Abbreviation: Stem Cell Rev Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-10-04 Completed Date: 2011-01-20 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101255952 Medline TA: Stem Cell Rev Country: United States |
Other Details:
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Languages: eng Pagination: 611-21 Citation Subset: IM |
Affiliation:
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Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Antigens, CD / metabolism Antigens, CD80 / metabolism Cell Differentiation / drug effects, physiology* Dendritic Cells / cytology*, drug effects, metabolism Embryonic Stem Cells / cytology*, metabolism Enzyme-Linked Immunosorbent Assay Flow Cytometry HLA-DR Antigens / metabolism Humans Immunoglobulins / metabolism Interleukin-10 / metabolism Membrane Glycoproteins / metabolism Mice Monocytes / cytology* Phagocytosis / drug effects, physiology Polymerase Chain Reaction Transforming Growth Factor beta / metabolism Tumor Necrosis Factor-alpha / pharmacology |
| Grant Support | |
ID/Acronym/Agency:
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MOP-158235//Canadian Institutes of Health Research; MSH-166732//Canadian Institutes of Health Research; MSH-196457//Canadian Institutes of Health Research |
| Chemical | |
Reg. No./Substance:
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0/Antigens, CD; 0/Antigens, CD80; 0/CD83 antigen; 0/HLA-DR Antigens; 0/Immunoglobulins; 0/Membrane Glycoproteins; 0/Transforming Growth Factor beta; 0/Tumor Necrosis Factor-alpha; 130068-27-8/Interleukin-10 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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