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Clinical and Genetic Origins of Monomorphic Epitheliotropic Intestinal T Cell Lymphoma

单形性上皮性肠 T 细胞淋巴瘤的临床和遗传起源

基本信息

批准号：
10566317
负责人：
Sandeep Dave
金额：
$ 41.66万
依托单位：
DUKE UNIVERSITY
依托单位国家：
美国
项目类别：
财政年份：
2023
资助国家：
美国
起止时间：
2023-01-01 至 2027-12-31
项目状态：
未结题

来源：
https://reporter.nih.gov/project-details/10566317
关键词：
Address Affect Biological Celiac Disease Cell Differentiation process Cell physiology Cells Clinical DNA Damage DNA Repair Development Disease Disease model Exhibits Exons Frequencies Gene Silencing Generations Genes Genetic Genetic Transcription Genomics Histone H3 Intestinal Neoplasms Intestines Knock-out Knockout Mice Knowledge Lead Lymphocyte Lymphoma Lymphomagenesis Lysine Malignant Neoplasms Measures Messenger RNA Methylation Modeling Modification Molecular Mutate Mutation Oncogene Activation Oncogenes Outcome Pathogenesis Pathway interactions Patients Phenotype Population Premalignant Cell Process Prognosis RNA Splicing Rag1 Mouse Recording of previous events Role STAT5B gene Site T-Cell Development T-Cell Lymphoma T-Lymphocyte T-cell receptor repertoire Techniques Testing Therapeutic Treatment Protocols V(D)J Recombination Work cell transformation design effective therapy genotoxicity histone methyltransferase improved innovation intraepithelial mouse model novel novel therapeutic intervention overexpression premalignant recruit response single-cell RNA sequencing standard of care tumor γδ T cells

项目摘要

ABSTRACT Monomorphic epitheliotropic intestinal T-cell lymphoma (MEITL) is a rare but lethal disease with a median survival of 1 year. There is no current effective standard-of-care. Previous MEITL sequencing efforts performed by our group and others have revealed SETD2 as one of the most frequently altered genes in this disease. SETD2 directs trimethylation of the lysine 36 residue on histone H3 (H3K36me3), which in turn is associated with active transcription of genes. SETD2 has been implicated in DNA damage repair and mRNA splicing. However, the molecular role of SETD2 and its interaction with activated oncogenes in MEITL pathogenesis is largely unknown. In this proposal, we will utilize a conditional mouse model to determine how SETD2 loss contributes to the creation of a premalignant pool of intestinal intraepithelial cells (IELs), the cell of origin of MEITL. We will also investigate how the combination of SETD2 loss and activation of the oncogenes STAT5B or MYC lead to IEL transformation. Finally, we will determine the extent to which SETD2 deficiency sensitizes T lymphoma cells to a variety of genotoxic chemotherapeutics. We anticipate that the results of this work will have immediate impact on the design of effective treatment regimens that target MEITL and other SETD2-deficient lymphomas.

摘要单形性上皮嗜性T细胞淋巴瘤(MEITL)是一种罕见但致命的疾病，其存活1年。目前还没有有效的护理标准。之前进行的MEITL测序工作我们和其他人已经发现SETD2是这种疾病中最常见的改变基因之一。 SETD2指向组蛋白H3(H3K36me3)上赖氨酸36残基的三甲基化，H3K36me3进而与与基因的活跃转录有关。SETD2与DNA损伤修复和mRNA剪接有关。然而，SETD2及其与活化癌基因的相互作用在MEITL发病机制中的分子作用是很大程度上是未知的。在这个提案中，我们将利用一个有条件的小鼠模型来确定SETD2丢失是如何导致建立一个癌前肠道上皮内细胞池(IEL)，这是MEITL的起源细胞。我们还将研究SETD2缺失和癌基因STAT5B或MYC激活如何导致IEL 转型。最后，我们将确定SETD2缺乏在多大程度上使T淋巴瘤细胞对多种具有遗传毒性的化疗药物。我们预计，这项工作的结果将立即产生影响。关于针对MEITL和其他SETD2缺陷淋巴瘤的有效治疗方案的设计。