Primary biliary cirrhosis: paradigm or paradox for autoimmunity.

Primary biliary cirrhosis: paradigm or paradox for autoimmunity.
复制标题

原发性胆汁性肝硬化:自身免疫的范例或悖论。

DOI:
10.1016/0016-5085(91)80033-6
复制
发表时间:
1991
期刊:
影响因子:
29.4
通讯作者:
Mackay,IR
Mackay,IR
中科院分区:
医学1区
文献类型:
--
作者:
Gershwin,ME;Mackay,IR

文献摘要

参考文献

被引文献

相似文献

原发性胆汁性肝硬化已被归类为一种模式的自身免疫性疾病的基础上,在免疫调节和线粒体自身抗体的存在显着的缺陷。直到最近,线粒体自身反应性的意义和定义尚不清楚。自1987年以来,在对生物化学和分子靶向自身抗原的理解和定义方面有了巨大的进步。线粒体抗原的互补DNA的克隆已经导致2-氧代酸脱氢酶家族的三种酶被鉴定为原发性胆汁性肝硬化患者中线粒体自身抗体的靶点。主要的反应性自身抗原是丙酮酸脱氢酶的E2亚单位。丙酮酸脱氢酶E2(自身表位)上的免疫显性位点已被绘制,并已被证明是功能上重要的硫辛酸辅基的附着位点。其他酶的自身表位可能占据酶上的等同位点。这些线粒体自身表位的可用性和定义允许解决与这些自身抗原的加工和靶向相关的具体问题,以及对免疫病理学机制的进一步研究。同样,除了已经描述的通过将原发性胆汁性肝硬化患者的外周血淋巴细胞转移到严重联合免疫缺陷小鼠中来复制胆管病变之外,定义明确的自身抗原的可用性可能有助于有效动物模型的开发。这样的模型将促进主要组织相容性复合体表达的作用和T细胞反应性的表征的具体研究。因此,原发性胆汁性肝硬化是利用重组DNA技术在自身免疫方面取得重大进展的一个关键例子。
Primary biliary cirrhosis has been classified as a model autoimmune disease based on striking defects in immune regulation and the presence of autoantibodies to mitochondria. Until recently the significance and definition of mitochondrial autoreactivity was unknown. Since 1987, there has been a vast improvement in the understanding and definition of the biochemical and molecular target autoantigens. The cloning of complementary DNAs for mitochondrial antigens has led to the identification of three enzymes of the 2-oxo-acid dehydrogenase family as the targets of the autoantibodies to mitochondria in patients with primary biliary cirrhosis. The major reactive autoantigen is the E2 subunit of pyruvate dehydrogenase. Immunodominant sites on pyruvate dehydrogenase E2 (autoepitopes) have been mapped and have been shown to be the site of attachment of the functionally important lipoic acid prosthetic group. The autoepitope for the other enzymes probably occupies an equivalent site on the enzyme. The availability and definition of these mitochondrial autoepitopes have allowed specific questions to be addressed relating to the processing and targeting of these autoantigens as well as further studies on mechanisms of immunopathology. Similarly, the availability of well-defined autoantigens could contribute to the development of valid animal models in addition to the already described reproduction of the biliary ductular lesions by transfer of peripheral blood lymphocytes from patients with primary biliary cirrhosis into severe combined immunodeficient mice. Such models will facilitate specific study of the role of major histocompatibility complex expression and the characterization of T-cell reactivity. Thus, primary biliary cirrhosis is a key example of significant progress in autoimmunity being made by use of recombinant DNA technology.
DOI: 10.1056/nejm195801232580407
发表时间: 1958-01
期刊: The New England journal of medicine
影响因子: --
作者:
I. Mackay
通讯作者: I. Mackay
U1 RNA 相关 70K 蛋白的人类 cDNA 克隆。
DOI: 10.1002/j.1460-2075.1986.tb04631.x
发表时间: 1986
期刊: The EMBO Journal
影响因子: --
作者:
H. Theissen;M. Etzerodt;R. Reuter;C. Schneider;F. Lottspeich;P. Argos;R. Lührmann;L. Philipson
通讯作者: L. Philipson
原发性胆汁性肝硬化:当前知识、观点和未来方向
DOI: --
发表时间: 1989
期刊: Seminars in liver disease (Print)
影响因子: --
作者:
I. Mackay;Gershwin Me
通讯作者: Gershwin Me
移植肾中的淀粉栓塞
DOI: --
发表时间: 1974
期刊:
影响因子: --
作者:
I. B. Elfenbein;R. Mcalack;D. Mills;E. Munoz;J. Milder;M. Côté
通讯作者: M. Côté
DOI: 10.4049/jimmunol.142.11.3815
发表时间: 1988
期刊: The FASEB Journal
影响因子: --
作者:
M. Gershwin;Aftab J. Ahmed;D. Danner;D. Fregeau;P. Leung;R. Coppel
通讯作者: R. Coppel