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  4. The hDAF Exogene Protects Swine Endothelial and Peripheral Blood Mononuclear Cells From Xenoreactive Antibody Mediated Cytotoxicity in hDAF Transgenic Pigs
 
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The hDAF Exogene Protects Swine Endothelial and Peripheral Blood Mononuclear Cells From Xenoreactive Antibody Mediated Cytotoxicity in hDAF Transgenic Pigs

Journal
Transplantation Proceedings
Journal Volume
38
Journal Issue
7
Pages
2270-2272
Date Issued
2006
Author(s)
JANG-MING LEE  
Tu C.-F.
HAO-CHIH TAI  
NAI-KUAN CHOU  
Yang T.-S.
Weng C.-N.
Lee Y.-C.
Lee C.-J.
PO-HUANG LEE  
DOI
10.1016/j.transproceed.2006.06.079
URI
https://www.scopus.com/inward/record.uri?eid=2-s2.0-33845965965&doi=10.1016%2fj.transproceed.2006.06.079&partnerID=40&md5=07afa1f4250154b470b90e6853f00dc3
https://scholars.lib.ntu.edu.tw/handle/123456789/521430
Abstract
Xenoreactive antibody-induced complement activation and cytotoxicity poses a major obstracle to xenograft survival in humans. Previously, we have generated transgenic pigs carrying the hDAF exogene to help overcome this problem. In this study, we examined whether the hDAF exogene in various swine cells shows an equally protective effect for the complement-mediated cytotoxicity induced by human xenoreactive antibodies. Pig peripheral blood mononuclear cells (PBMCs) and aortic endothelial cells (PAECs) were used as targets. Fresh human serum was harvested from a single healthy human donor as the source of human xenoreactive antibodies and complement. The target cells cocultured with medium containing various concentrations of human serum for 24 hours were evaluated using the 3-[4,5-dimethylthiaolyl]-2,5-diphenyl-tetrazolium bromide assay for cellular viability. We observed that xenoreactive antibody plus human complement-mediated cellular cytoxicity dose-dependently correlated with the concentration of human serum in the culture medium. As compared with the PBMCs from the normal pigs, PBMCs from hDAF transgenic pigs showed significantly better survival after treatment with human serum (P < .05). Similarly, the survival of PAECs from the hDAF transgenic pig were also significantly higher than that from normal pigs (P < .05). Our data demonstrated a protective effect from human xenoreactive antibodies and complement-mediated cytoxicity of hDAF exogenes in pig PBMCs and PAECs. These observations support the clinical value of the hDAF transgenic pig as an organ donor in xenotransplantation. ? 2006 Elsevier Inc. All rights reserved.
SDGs

[SDGs]SDG3

Other Subjects
3 (4,5 dimethyl 2 thiazolyl) 2,5 diphenyltetrazolium bromide; antibody detection; antibody production; article; cell survival; complement dependent cytotoxicity; diagnostic value; endothelium cell; evaluation research; exogene; hDAF gene; immunoreactivity; nonhuman; peripheral blood mononuclear cell; priority journal; transgenic animal; xenotransplantation; Animals; Animals, Genetically Modified; Antibodies, Heterophile; Antigens, CD; Antigens, CD55; Aorta; Cytotoxicity, Immunologic; Endothelium, Vascular; Humans; Leukocytes, Mononuclear; Swine
Type
journal article

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