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猪血管内皮细胞对人血清适应状态的建立及发生机理的研究

Establishment of the Porcine Arteriae Endothelial Cell Model of Accommodation to Human Serum and Study to the Occurrence Mechanism

【作者】 李孟彬;

【导师】 李开宗; 王为忠; 柴玉波;

【作者基本信息】 第四军医大学 , 外科学, 2006, 博士

【摘要】 异种移植是解决供体器官短缺的有效办法,然而其异常强烈的排斥反应阻碍了其在临床上的应用。适应作为介于排斥和耐受之间的一种状态得到大家广泛的关注,并将其作为克服急性血管性排斥反应(acute vascular rejection,AVR)的一个途径。本研究即是基于上述的认识,通过培养猪主动脉血管内皮细胞(Porcine Arteriae Endothelial Cell,PAEC),以多种形式诱导其适应状态的发生,并采用基于PCR的改良消减杂交技术对PAEC适应前后差异表达基因进行筛选、测序,以获取适应状态PAEC可能发生的生物反应的信息,为研究适应的发生机制寻找线索。 本研究分为三部分,分别总结如下: 第一部分 猪血管内皮细胞的培养及鉴定 目的:通过PAEC的培养与鉴定,为异种移植体外实验研究模型的建立提供材料和方法。方法:自试验用乳猪采血制备猪的自体血清,在麻醉下切取猪的主动脉,以1%胶原酶Ⅰ消化法获取血管内皮细胞,进行内皮细胞的原代培养,并分别以胎牛血清、猪自体血清进行继续培养,绘制生长曲线,推算倍增时间以及贴壁率,采用DiI-Ac-LDL吸收试验鉴定细胞类型和纯化程度。结果:初步观察猪自体血清进行原代培养其贴壁率为92.3%高于胎牛血清培养组87.6%,倍增时间19.02hr快于胎牛

【Abstract】 Xenotransplantation is an effective pathway to improve the shortage of graft, however the intense xenograft rejection greatly hindered its application in clinic. Accommodation being a state between rejection and tolerance had obtained widespread attention, and been considered to take as a pathway to overcome acute vascular rejection (AVR) in xenotransplantation. This research is based on above understanding. In the study, the PAEC (Porcine Arteriae Endothelial Cell) was cultured and expanded in vitro, reduced to develop the state of accommodation with different ways. Then we cloned the differentially- expressed genes in accommodation PAEC by using PCR-based and improved subtractive hybridization, and analysis the biological response that maybe proceed in the accommodation PAEC to find the clue of studing the accommodation developed mechanism. This research includes three parts, and summarizes separately as follows:

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