Donor cornea shortage is a primary hurdle in the development of corneal transplantation. Of all species, porcine corneas are the ideal transplantation material for humans. However, the xenoimmune rejection induced by porcine corneal xenotransplantation compromises surgical efficacy. Although the binding of IgM/IgG in human serum to a genetically modified porcine cornea is significantly weaker than that of the wild type (WT), genetically modified porcine corneas do not display a prolonged graft survival time in vivo. Conversely, costimulatory blockade drugs, such as anti-CD40 antibodies, can reduce the xenoimmune response and prolong graft survival time in animal experiments. Moreover, porcine endothelial grafts can survive for more than 6mo with only the subconjunctival injection of a steroid-based immunosuppressants regime; therefore, they show great value for treating corneal endothelial disease. In addition, zoonotic transmission is a primary concern of xenotransplantation. Porcine endogenous retrovirus (PERV) is the most significant virus assessed by ophthalmologists. PERV integrates into the porcine genome and infects human cells in vitro. Fortunately, no evidence from in vivo studies has yet shown that PERV can be transmitted to hosts.
基金:
National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [81470608]
第一作者机构:[1]Capital Med Univ, Beijing Tongren Hosp, Beijing Tongren Eye Ctr, Beijing Ophthalmol & Visual Sci Key Lab, Dongjiaominxiang 1, Beijing 100730, Peoples R China
通讯作者:
通讯机构:[1]Capital Med Univ, Beijing Tongren Hosp, Beijing Tongren Eye Ctr, Beijing Ophthalmol & Visual Sci Key Lab, Dongjiaominxiang 1, Beijing 100730, Peoples R China[*1]Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Science Key Laboratory, Dongjiaominxiang 1#, Dongcheng District, Beijing 100730, China.
推荐引用方式(GB/T 7714):
Song Yao-Wen,Pan Zhi-Qiang.Reducing porcine corneal graft rejection, with an emphasis on porcine endogenous retrovirus transmission safety: a review[J].INTERNATIONAL JOURNAL OF OPHTHALMOLOGY.2019,12(2):324-332.doi:10.18240/ijo.2019.02.21.
APA:
Song, Yao-Wen&Pan, Zhi-Qiang.(2019).Reducing porcine corneal graft rejection, with an emphasis on porcine endogenous retrovirus transmission safety: a review.INTERNATIONAL JOURNAL OF OPHTHALMOLOGY,12,(2)
MLA:
Song, Yao-Wen,et al."Reducing porcine corneal graft rejection, with an emphasis on porcine endogenous retrovirus transmission safety: a review".INTERNATIONAL JOURNAL OF OPHTHALMOLOGY 12..2(2019):324-332