Trisomy 8 in Hematopoiesis and Myeloid Leukemia

造血和髓性白血病中的 8 三体性

• 批准号: 8849551
• 负责人: David J Gordon
• 金额: $ 16.45万
• 依托单位: UNIVERSITY OF IOWA
• 依托单位国家: 美国
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-01 至 2016-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8849551
• 关键词: AML1-ETO fusion protein; Abnormal Karyotype; Acute Myelocytic Leukemia; Advisory Committees; Affect; Aneuploid Cells; Aneuploidy; Apoptotic; Area; Award; Biological Models; Boston; Cancer Biology; Cell Line; Cell Separation; Cells; Cellular biology; Childhood Acute Lymphocytic Leukemia; Chromosomal Instability; Chromosome Transfer; Chromosomes; Chromosomes, Human, Pair 21; Chromosomes, Human, Pair 8; Clinical; Critiques; Dana-Farber Cancer Institute; Dependency; Development; Development Plans; Diploid Cells; Diploidy; Disease; Drops; Dysmyelopoietic Syndromes; Employee Strikes; Ensure; Environment; Ewings sarcoma; Exhibits; Experimental Models; Frequencies; Gene Dosage; Genes; Genetic Drift; Goals; Gray unit of radiation dose; Hematologic Neoplasms; Hematopoiesis; Hematopoietic; Human; Individual; Link; MLL-AF9; Malignant Neoplasms; Mediating; Mentors; Methods; Myelogenous; Myeloid Leukemia; Oncogenes; Pathogenesis; Pediatric Hematology/Oncology; Pediatric Hospitals; Pediatric Oncology; Pharmaceutical Preparations; Phenotype; Physicians; Ploidies; Positioning Attribute; Research; Research Personnel; Research Proposals; Research Training; Role; Scientist; Solid Neoplasm; Structure; Tetrasomy; Time; Training; Trisomy; Trisomy 8; Universities; Work; Writing; Yeasts; bcr-abl Fusion Proteins; cancer cell; cancer therapy; career; career development; chromosome 8 gain; experience; genetic manipulation; induced pluripotent stem cell; innovation; leukemia; leukemogenesis; meetings; neoplastic cell; novel therapeutic intervention; programs; small hairpin RNA; small molecule; small molecule libraries; stem cell biology; tumor

DESCRIPTION (provided by applicant): An abnormal number of chromosomes, or aneuploidy, is observed in 70% of hematologic malignancies and 95% of solid tumors. The accumulation of these extra chromosomes is nonrandom in many cancers, with some chromosomes being acquired more frequently than others. For example, there is a significant association between the gain of chromosome 8 and myeloid disorders, including acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS). Although this link between aneuploidy and cancer is well-established, the mechanistic details are still poorly understood. A significant barrier to investigating questions related to aneuploidy has been a lack of isogenic cell lines with different karyotypes. Recently, I developed two complementary approaches, using microcell mediated chromosome transfer and mosaic trisomy, that enable a direct comparison of diploid and aneuploid cells that are otherwise genetically identical. I also generated induced pluripotent stem cells (iPS) with different karyotypes. I plan to use these cells to investigate the role of trisomy 8 in AML, as well as to identify small molecules and genes which exhibit ploidy- specific lethality. The successful identification of ploidy-specific drugs would represent a novel therapeutic approach in cancer. Candidate Career Goals: My long-term career objective is to obtain a tenure-track position as a physician-scientist in a pediatric hematology/oncology department. The K08 award will provide the protected time I need for advanced training in order to achieve this career goal. This research proposal is part of a structured plan with scientific, technical, clinical, and career development components. The research will performed under the guidance of Dr. David Pellman in the Division of Pediatric Hematology/Oncology at Children's Hospital Boston/Dana Farber Cancer Institute. The career development plan builds upon my prior research and clinical experiences with the goal of ensuring that I acquire the expertise required to become a successful, independent investigator with a focus on cancer biology and clinical pediatric oncology. Environment: The Dana-Farber Cancer Institute (DFCI), Children's Hospital Boston and Harvard University are internationally recognized research programs with a number of expert researchers in the areas of stem cell biology, hematopoiesis, and cancer cell biology. Furthermore, The Division of Pediatric Hematology/Oncology at Children's Hospital Boston/Dana Farber Cancer Institute has a distinguished record of training successful physician scientists. I have assembled an excellent mentoring and advisory committee, consisting of Dr. David Pellman, Dr. Scott Armstrong, Dr. George Daley and Dr. Nathanael Gray, that will guide my research and training experiences.

描述（由申请人提供）：在70%的恶性血液病和95%的实体瘤中观察到染色体数目异常或非整倍体。这些额外染色体的积累在许多癌症中是非随机的，其中一些染色体比其他染色体更频繁地获得。例如，8号染色体的获得与骨髓疾病（包括急性骨髓性白血病（AML）和骨髓增生异常综合征（MDS））之间存在显著关联。尽管非整倍体和癌症之间的联系已经得到了很好的证实，但其机制细节仍然知之甚少。研究非整倍体相关问题的一个重要障碍是缺乏具有不同核型的同基因细胞系。最近，我开发了两种互补的方法，使用微细胞介导的染色体转移和镶嵌三体，使二倍体和非整倍体细胞的直接比较，否则遗传相同。我还产生了具有不同核型的诱导多能干细胞（iPS）。我计划用这些细胞来研究8号三体在急性髓细胞白血病中的作用，以及鉴定表现出倍性特异性致死性的小分子和基因。倍体特异性药物的成功鉴定将代表癌症的新治疗方法。候选人职业目标：我的长期职业目标是在儿科血液学/肿瘤学部门获得一个终身职位。K 08奖将为我提供所需的高级培训时间，以实现这一职业目标。该研究计划是一个结构化计划的一部分，包括科学，技术，临床和职业发展组成部分。本研究将在波士顿儿童医院/Dana Farber癌症研究所儿科血液学/肿瘤学部门的大卫佩尔曼博士的指导下进行。职业发展计划建立在我以前的研究和临床经验的基础上，目的是确保我获得成为一名成功的独立研究者所需的专业知识，重点是癌症生物学和临床儿科肿瘤学。工作环境：丹娜-法伯癌症研究所（DFCI）、波士顿儿童医院和哈佛大学是国际公认的研究项目，在干细胞生物学、造血和癌细胞生物学领域拥有许多专家研究人员。此外，波士顿儿童医院/达纳法伯癌症研究所的儿科血液学/肿瘤学部门在培训成功的医生科学家方面有着杰出的记录。我已经组建了一个优秀的指导和咨询委员会，由大卫佩尔曼博士、斯科特阿姆斯特朗博士、乔治戴利博士和纳撒尼尔格雷博士组成，他们将指导我的研究和培训经验。