Prognostic implications of mitochondrial inheritance in myelodysplastic syndromes after stem-cell transplantation

干细胞移植后骨髓增生异常综合征线粒体遗传的预后意义

• 批准号: 10662946
• 负责人: Jing Dong
• 金额: $ 15.66万
• 依托单位: MEDICAL COLLEGE OF WISCONSIN
• 依托单位国家: 美国
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-04-20 至 2028-03-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10662946
• 关键词: Acute; Acute Myelocytic Leukemia; Acute leukemia; Address; Affect; Allogenic; Bioinformatics; Biological Markers; Bone Marrow; Bone marrow failure; Cancer Center; Candidate Disease Gene; Cells; Clinical; Clinical Data; Clonal Hematopoietic Stem Cell; Cytogenetics; DNA Methylation; DNA Sequence Alteration; Data; Decision Making; Disease; Disease-Free Survival; Dysmyelopoietic Syndromes; Enrollment; Epidemiologic Methods; Epidemiology; Epigenetic Process; Etiology; Exhibits; Future; Genes; Genetic; Genetic Transcription; Genetic Variation; Genome; Genomics; Goals; HLA Antigens; Haplogroup; Hematological Disease; Hematology; Hematopoietic; Hematopoietic Stem Cell Transplantation; Hematopoietic stem cells; Homeostasis; Impairment; Ineffective Hematopoiesis; Inferior; Iron; K-Series Research Career Programs; Knowledge; Medical; Medicine; Mentors; Methodology; Methylation; Mitochondria; Mitochondrial DNA; Mitochondrial Inheritance; Modification; Molecular; Molecular Epidemiology; Morbidity - disease rate; Morphology; Mutation; Nuclear; Outcome; Pathogenesis; Patient-Focused Outcomes; Patients; Play; Ploidies; Prognostic Marker; Recommendation; Recurrent disease; Relapse; Research; Research Personnel; Risk; Risk Factors; Risk-Benefit Assessment; Role; Single Nucleotide Polymorphism; Stem cell transplant; Stratification; Subgroup; System; Technology; Therapeutic; Time; Training; Transplantation; Variant; biological heterogeneity; bisulfite sequencing; career; chronic graft versus host disease; chronic leukemia; clinical heterogeneity; curative treatments; cytopenia; design; epigenomics; experience; genetic variant; genome sciences; genome sequencing; genomic data; heme biosynthesis; high risk; improved; improved outcome; individual response; innovation; insertion/deletion mutation; mitochondrial DNA alteration; mitochondrial genome; modifiable risk; mortality; new therapeutic target; non-genetic; novel; novel marker; outcome prediction; patient subsets; personalized risk prediction; population based; post-transplant; precision medicine; predictive marker; professor; prognostic; prognostic model; prognostic signature; prognostic value; programs; relapse risk; risk stratification; risk/benefit ratio; statistics; stem cell homeostasis; treatment response; whole genome

ABSTRACT Myelodysplastic syndromes (MDS) are a heterogenous group of clonal hematopoietic stem cell disorders, characterized by ineffective hematopoiesis and a tendency to progress to acute myeloid leukemia in 30% of the patients. Currently the only curative therapy for MDS is allogeneic hematopoietic stem-cell transplantation (HCT). However, the mortality after HCT is high due to relapsed disease and transplant-related complications. The commonly used MDS prognostic models for HCT only consider non-genetic factors, thus could not accurately predict the outcomes after HCT. Novel predictive markers are therefore critically needed to identify patients who are most likely to benefit from HCT. Mitochondria play a critical role in hematopoietic cell homeostasis and differentiation. Genetic and epigenetic alterations in mitochondrial DNA (mtDNA) can impair mitochondrial functions and play a pathophysiological role in MDS. This Career Development Award will provide training and research experience to Dr. Dong to support her long-term career goal of becoming an independent investigator in integrative molecular epidemiology, with a focus on applying state-of-the-art omics technologies and innovative population-based epidemiologic methods to reduce the burden of hematologic diseases. While Dr. Dong has had comprehensive training in genetics and epidemiology, she requires further training in methodologies of HCT-related outcomes and epigenetics. She has assembled a mentoring team comprised of a primary mentor, Dr. Raul Urrutia, Director in the Genomic Sciences and Precision Medicine Center and renowned leader in genomics, epigenomics and precise medicine; and two co-mentors: Dr. Wael Saber, Professor and Scientific Director in the Acute and Chronic Leukemia Working Committees in the CIBMTR specializing in HCT and MDS; Dr. Paul Auer, Professor and Cancer Center Core Director with expertise in statistics and bioinformatics. Leveraging the existing whole genome sequencing data from the “MDS Genomics and Epigenetics Study” in the CIBMTR, Dr. Dong will focus on mitochondrial genome to address the research gaps mentioned above: 1) determine mitochondrial genomic landscape associated with MDS outcomes after allo-HCT; 2) quantify mtDNA copy number and evaluate its associations with MDS outcomes after HCT; and 3) identify mtDNA methylation profiles associated with MDS outcomes after HCT. The findings will improve our understanding of MDS etiology and provide additional molecular predictors of MDS outcomes after HCT to help developing individualized risk prediction and targeted treatments.

抽象的 骨髓增生综合征（MDS）是一组异源性克隆造血干细胞疾病， 以无效的造血作用和在30％的急性髓样白血病中进展的趋势 病人。目前，MDS唯一的现代疗法是同种异体造血干细胞移植 （HCT）。然而，由于中继疾病和与移植相关的并发症，HCT后的死亡率很高。 HCT的常用MDS原型模型仅考虑非遗传因素，因此不能 准确预测HCT后的结果。因此，需要进行新颖的预测标记来识别 最有可能从HCT中受益的患者。线粒体在造血细胞中起关键作用 稳态和差异化。线粒体DNA（mtDNA）的遗传和表观遗传改变会损害 线粒体功能并在MDS中起病理生理作用。这个职业发展奖将 向Dong博士提供培训和研究经验，以支持她长期职业目标 综合分子流行病学的独立研究者，重点是应用最先进的 法学技术和基于人群的创新流行病学方法，以减少燃烧的燃烧 血液学疾病。尽管Dong博士在遗传学和流行病学方面接受了全面的培训，但她 需要进一步培训与HCT相关的结果和表观遗传学的方法。她集会了 指导团队完成了基因组科学主任劳尔·乌里鲁蒂亚（Raul Urrutia）博士， 精密医学中心和著名的基因组学，表观基因组学和精密医学领导者；和两个 联合官员：Wael Saber博士，急性和慢性白血病的教授兼科学总监 CIBMTR专门从事HCT和MD的委员会； Paul Auer博士，教授兼癌症中心核心 具有统计和生物信息学专业知识的主任。利用现有的整个基因组测序 来自CIBMTR的“ MDS基因组学和表观遗传学研究”的数据，Dong博士将专注于线粒体 解决上述研究差距的基因组：1）确定线粒体基因组景观 与Allo-HCT后的MDS结果相关； 2）量化mtDNA拷贝数并评估其关联 HCT之后的MD结果； 3）确定与MDS结果相关的mtDNA甲基化谱 HCT之后。这些发现将提高我们对MDS病因的理解，并提供额外的分子 HCT后MDS结果的预测因素，以帮助制定个性化的风险预测并针对目标 治疗。