Long-Term IgG Response to Porcine Neu5Gc Antigens without Transmission of PERV in Burn Patients Treated with Porcine Skin Xenografts

0423300 - ÚMG 2014 RIV US eng J - Journal Article
Scobie, L. - Padler-Karavani, V. - Les Bas-Bernardet, S. - Crossan, C. - Bláha, J. - Matoušková, Magda - Hector, R.D. - Cozzi, E. - Vanhove, B. - Charreau, B. - Blancho, G. - Bourdais, L. - Tallacchini, M. - Ribes, J. - Yu, H. - Chen, X. - Kracíková, J. - Brož, L. - Hejnar, Jiří - Veselý, Pavel - Takeuchi, Y. - Varki, A. - Soulillou, J.P.
Long-Term IgG Response to Porcine Neu5Gc Antigens without Transmission of PERV in Burn Patients Treated with Porcine Skin Xenografts.
Journal of Immunology. Roč. 191, č. 6 (2013), s. 2907-2915. ISSN 0022-1767. E-ISSN 1550-6606
Grant - others:EK(XE) LSHB-CT-2006-037377
Source of funding: R - Framework programmes of European Commission
Keywords : PERV transmission * xenotransplantation * long-term immune response
Subject RIV: EB - Genetics ; Molecular Biology
Impact factor: 5.362, year: 2013

Acellular materials of xenogenic origin are used worldwide as xenografts, and phase I trials of viable pig pancreatic islets are currently being performed. However, limited information is available on transmission of porcine endogenous retrovirus (PERV) after xenotransplantation and on the long-term immune response of recipients to xenoantigens. We analyzed the blood of burn patients who had received living pig-skin dressings for up to 8 wk for the presence of PERV as well as for the level and nature of their long term (maximum, 34 y) immune response against pig Ags. Although no evidence of PERV genomic material or anti-PERV Ab response was found, we observed a moderate increase in anti-alpha Gal Abs and a high and sustained anti-non-alpha Gal IgG response in those patients. Abs against the nonhuman sialic acid Neu5Gc constituted the anti-non-alpha Gal response with the recognition pattern on a sialoglycan array differing from that of burn patients treated without pig skin. These data suggest that anti-Neu5Gc Abs represent a barrier for long-term acceptance of porcine xenografts. Because anti-Neu5Gc Abs can promote chronic inflammation, the long-term safety of living and acellular pig tissue implants in recipients warrants further evaluation.
Permanent Link: http://hdl.handle.net/11104/0229545