Human Pluripotent Stem Cells as a Source of Dendritic Cells to Induce Immune Tolerance

Author:   Kei-Ling Kelly Lau ,  劉己綾
Publisher:   Open Dissertation Press
ISBN:  

9781361340097


Publication Date:   26 January 2017
Format:   Paperback
Availability:   Temporarily unavailable   Availability explained
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Human Pluripotent Stem Cells as a Source of Dendritic Cells to Induce Immune Tolerance


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This dissertation, Human Pluripotent Stem Cells as a Source of Dendritic Cells to Induce Immune Tolerance by Kei-ling, Kelly, Lau, 劉己綾, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Dendritic Cells (DCs) are professional antigen presenting cells that play a crucial role in the induction of immune tolerance. Although DCs have been a potential target for immunotherapy, the amount of DCs in blood source is limited and ex vivo expansion has been inefficient. Human embryonic stem cells (hESCs) and induced pluripotent stem cells (iPSCs) provide a great source in cell-based therapy because of their self-renewal ability and pluripotency. My project focuses on generating tolerogenic DCs (tDCs) from human pluripotent stem cells (i.e. hESCs and iPSCs) and their characterization. Specifically, hESCs and hiPSCs were first differentiated to hematopoietic progenitor cells (HPCs) using three different methods (i.e. bone-marrow stromal cell co-culture and two previously reported defined medium methods). The hESC/iPSC-differentiated hematopoietic progenitor cells (HPCs) were characterized by their surface phenotype using flow cytometry. Then the hESC/iPSC-differentiated immature DCs were further expanded and differentiated from the hESC/iPSCdifferentiated CD34+ HPCs with the addition of granulocyte-macrophage colony-stimulating factor (GM-CSF) and Interleukin 4 (IL-4). Tolerogenic properties were introduced by treating hESC-differentiated DCs with rapamycin. The treated DCs were characterized for their tolerogenicity by examining their expression of PDL1, PDL2, ICOS and CD40 etc., and their ability to promote regulatory T cells (Treg) differentiation. All these were compared with monocyte-derived tDCs. In summary, this study has examined the potential of using pluripotent stem cells-derived DCs as a cell source for immune tolerance induction therapy. DOI: 10.5353/th_b5194757 Subjects: Dendritic cells - ImmunologyEmbryonic stem cells - ImmunologyImmunological tolerance

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Author:   Kei-Ling Kelly Lau ,  劉己綾
Publisher:   Open Dissertation Press
Imprint:   Open Dissertation Press
Dimensions:   Width: 21.60cm , Height: 0.70cm , Length: 27.90cm
Weight:   0.308kg
ISBN:  

9781361340097


ISBN 10:   1361340096
Publication Date:   26 January 2017
Audience:   General/trade ,  General
Format:   Paperback
Publisher's Status:   Active
Availability:   Temporarily unavailable   Availability explained
The supplier advises that this item is temporarily unavailable. It will be ordered for you and placed on backorder. Once it does come back in stock, we will ship it out to you.

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