Genetic Determinants of Pathologic Heterogeneity in MS

MS 病理异质性的遗传决定因素

• 批准号: 7232273
• 负责人: Claudia F. Lucchinetti
• 金额: $ 32.33万
• 依托单位: MAYO CLINIC ROCHESTER
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-05-15 至 2009-02-28
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7232273
• 关键词: Genetic; Determinants; Pathologic; Heterogeneity; MS

DESCRIPTION (provided by applicant): Our preliminary studies suggest there is intra-individual homogeneity within both early and chronic MS lesions with respect to pathologic measures of inflammation, dominant immune effector mechanisms of active demyelination, and extent of tissue injury and repair. Evidence of intra- individual pathological homogeneity may reflect genetic variation in loci controlling lesion formation. We propose to collect and pathologically phenotype a large sample of MS lesions in order to examine both the complex relationships between inflammation, demyelination, remyelination, and axonal injury in both early and chronic MS lesions, as well as investigate the relationship of demographic and clinical variables with these pathologic outcomes. In addition, we will assess the degree of intra-individual homogeneity for these well defined specific histo- and immunopathological outcomes in order to validate our preliminary observations of intra-individual homogeneity, and more accurately establish the number of cases within each of the respective pathological phenotypes available for future genetic study. We aim to establish a reliable and statistically robust MS Tissue-DNA Databank which will use pathology as a novel intermediate outcome for future genetic-association studies The proposed studies will yield a tremendous resource of patient material having both detailed and quantitative pathologic analyses and DNA, and will provide the framework for an efficient and cost-effective transition from discovery of chromosomal regions or candidate genes of interest in genome-wide linkage, population-association and tissue microarray studies, to detailed clinical-pathologic analysis in order to determine pathogenic relevance. By stratifying patients based on specific pathological features, we will increase the likelihood of identifying potential genetic contributions common to each category. Furthermore, there are pragmatic reasons for supporting additional research into MS pathology and genetics. A more fundamental understanding of the variable pathological and genetic factors involved in MS lesion evolution will not only provide additional pathogenetic insights into MS, but will lead to improved determination of long term prognoses, as well as impact the selection of current, and design of future, treatment approaches tailored to the patient.

描述（由申请人提供）：我们的初步研究表明，关于炎症的病理测量，早期和慢性MS病变内的个体内同质性存在，主动免疫效应器的主动性脱髓鞘机制以及组织损伤的程度以及组织损伤的程度和修复。个体内病理同质性的证据可能反映了控制病变形成基因座的遗传变异。我们建议在早期和慢性MS病变中收集大量的MS病变样本，以检查炎症，脱髓鞘，透明度和轴突损伤之间的复杂关系，并研究人口统计学和临床​​变量与这些病理学现象的关系。此外，我们将评估这些定义明确的组织和免疫病理学结局的个体内同质性程度，以验证我们对个体内同质性的初步观察，并更准确地确定可用于未来遗传研究的每个相应病理表型中的病例数量。 We aim to establish a reliable and statistically robust MS Tissue-DNA Databank which will use pathology as a novel intermediate outcome for future genetic-association studies The proposed studies will yield a tremendous resource of patient material having both detailed and quantitative pathologic analyses and DNA, and will provide the framework for an efficient and cost-effective transition from discovery of chromosomal regions or candidate genes of interest in genome-wide linkage,人口关联和组织微阵列研究，以详细的临床病理分析，以确定致病性相关性。通过根据特定的病理特征对患者进行分层，我们将增加确定每个类别常见的潜在遗传贡献的可能性。此外，有务实的原因支持对MS病理学和遗传学的额外研究。对MS病变演化中涉及的可变病理病理和遗传因素的更基本了解不仅将为MS提供其他致病见解，而且会改善对长期预后的确定，并影响当前的选择和未来的设计，对患者量身定制的治疗方法。