Protein targets of ovarian and oocyte autoantibodies

卵巢和卵母细胞自身抗体的蛋白质靶点

• 批准号: 6626663
• 负责人: JUDITH L LUBORSKY
• 金额: $ 30.07万
• 依托单位: RUSH UNIVERSITY MEDICAL CENTER
• 依托单位国家: 美国
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-03-01 至 2008-02-28
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6626663
• 关键词: antigen antibody reaction; autoantibody; autoantigens; autoimmune disorder; clinical research; egg /ovum; female; fertility; human subject; immunologic assay /test; in vitro fertilization; ovary disorder; pregnancy; proteomics; recombinant proteins

DESCRIPTION (provided by applicant): There is compelling evidence for an autoimmune disease of the ovary. Ovarian autoimmunity may affect 1-2 million women in the US. In order to identify women with ovarian autoimmunity we developed prototype immunoassays to detect ovary specific autoantibodies, and used them to develop phenotypic information on the association of ovarian autoimmunity with premature menopause (premature ovarian failure or POF) and unexplained infertility. Further human research and clinical use depends on identification of the relevant protein antigens. The objective of the proposed study is to identify major autoantigens relevant to the phenotypes associated with ovarian autoimmunity. Previous studies suggest that ovary specific autoantibodies react with several ovarian antigens. In addition, autoimmune sera react with four predominant bands of ovarian protein in one-dimensional Western blots. This is consistent with other autoimmune diseases in which antibodies to multiple antigens have the most significant predictive value for disease. We will test the hypothesis that positive sera react with more than one major ovarian antigen (Aim 1). Proteomics methodology combined with the use of a systematically selected panel of autoimmune sera will be used to identify major protein antigens. Recombinant forms of the identified human proteins will be produced. The reaction of each identified protein with the autoimmune sera test panel will be evaluated to verify the authenticity of identified proteins. In Aim 2 the hypothesis that autoimmune POF and unexplained infertility share the same antigens will be tested in order to support the concept that they represent different stages of the same autoimmune disorder. The reaction of sera from women with POF and unexplained infertility will be compared by immunoassay using the identified proteins produced in Aim 1. Furthermore, previous studies showed that ovarian antibodies are associated with a low likelihood of pregnancy after infertility treatment. In Aim 3, the hypothesis that autoantibodies to identified proteins also predict a low likelihood of pregnancy in women with unexplained infertility after in-vitro fertilization will be tested. We will determine if autoantibodies to one antigen or a combination of antigens has predictive value for pregnancy. The proposed study is expected to improve the precision with which ovarian autoimmunity is detected. This will permit studies of disease pathogenesis, health risks associated with ovarian autoimmunity, genetic factors associated with disease susceptibility and improve clinical diagnosis. It will also contribute to a better understanding of an autoimmune disease that affects women's health.

描述（由申请人提供）：有令人信服的证据表明卵巢自身免疫性疾病。 卵巢自身免疫可能影响美国100 - 200万女性。 为了识别卵巢自身免疫的女性，我们开发了原型免疫测定法来检测卵巢特异性自身抗体，并使用它们来开发卵巢自身免疫与过早绝经（卵巢早衰或POF）和不明原因不孕症相关的表型信息。 进一步的人类研究和临床应用取决于相关蛋白抗原的鉴定。 本研究的目的是确定与卵巢自身免疫相关的表型的主要自身抗原。 先前的研究表明卵巢特异性自身抗体与多种卵巢抗原发生反应。 此外，自身免疫血清在一维Western印迹中与卵巢蛋白的四个主要条带反应。 这与其他自身免疫性疾病一致，其中多种抗原的抗体对疾病具有最显著的预测价值。 我们将检验阳性血清与一种以上主要卵巢抗原反应的假设（目的1）。 将使用蛋白质组学方法结合使用系统选择的自身免疫血清组来鉴定主要蛋白质抗原。 将生产已鉴定人蛋白的重组形式。 将评价每种鉴定的蛋白质与自身免疫血清检测组的反应，以验证鉴定的蛋白质的真实性。在目标2中，将测试自身免疫性POF和原因不明的不孕症共享相同抗原的假设，以支持它们代表相同自身免疫性疾病的不同阶段的概念。 POF和不明原因不孕妇女血清的反应将通过免疫测定使用目标1中产生的鉴定蛋白质进行比较。 此外，以前的研究表明，卵巢抗体与不孕症治疗后怀孕的可能性低有关。 在目标3中，将检验针对已鉴定蛋白质的自身抗体也预测不明原因不孕妇女在体外受精后妊娠可能性低的假设。 我们将确定一种抗原或抗原组合的自身抗体是否对妊娠有预测价值。这项研究有望提高卵巢自身免疫检测的精确度。这将允许研究疾病的发病机制，与卵巢自身免疫相关的健康风险，与疾病易感性相关的遗传因素，并改善临床诊断。 它还将有助于更好地了解影响妇女健康的自身免疫性疾病。