The Role of Wnt Signaling in Normal and Abnormal Hematopoiesis

项目摘要 环境：加州大学（UC）是一所领先的学术研究机构， 科学家们有一个长期的传统，即在加州大学培养下一代科学家， 全国博士的第一名每年有6000多名博士后研究员选择 进行他们的研究。加州大学圣地亚哥分校（UCSD）是关键组成部分，擅长协作和 创新的生物科学。这里的环境是丰富的科学讨论，培训和博览会， 索尔克和桑福德-伯纳姆研究所都在步行距离内。格兰杰博士有各种各样的 培训课程，课程和研讨会，以促进个人发展和扩大她的科学和领导能力 skills.此外，每周还有大量的职业发展研讨会可供参加， 无数的科学研讨会。研究工作能够顺利进行，由于丰富的 任何科学领域的核心设施和专业知识。 候选人：格兰杰博士是加州大学圣地亚哥分校大卫特拉弗实验室的博士后研究员，他的最终职业目标是 在R1大学领导一个专注于干细胞的研究实验室。她加入特拉沃博士的实验室是因为 她在发育生物学，Wnt信号和动物模型方面的强大背景。在过去的3.5年里， 她一直在与卡尔·威勒特博士在加州大学圣地亚哥分校的实验室合作，这导致了两个出版物： 现在发表在细胞报告;第二个目前正在出版的斑马鱼。格兰杰博士是 实验室，建立了这个项目，并成为Traver-Willert合作努力的驱动力 组她也是实验室外的领导者，在那里她组织了一个专注于STEM的博士后系列研讨会 细胞，丰富她周围的社区。她准备好执行拟议的工作，实现她的职业生涯， 发展和培训目标，并为科学界贡献高影响力的研究。 研究：所有成熟的血细胞都来源于造血干细胞（HSC）。体外生成HSC 从多能性前体中，这种诱导多能性干细胞将使我们能够治疗疾病， 白血病和淋巴瘤与体外衍生的造血干细胞，规避骨髓捐赠的需要。这 也将建立一个重要的细胞工具，了解造血的潜在机制， 疾病本提案的总体目标是更好地了解发展中国家的一个 从中胚层指示HSC命运的线索，Wnt信号级联。这项研究将在斑马鱼中进行， 其是用于直接可视化血液干细胞的理想系统并且具有保守的遗传学。我假设 早期的Wnt/Fzd信号调控后期HSC的扩增，这对成体HSC的稳态有影响。我 我建议用1来检验这个假设。表征所需的Wnt/Fzds，2.决定发生了什么 在转录组水平上该信号的下游，以及3.发现这如何影响HSC的稳态。

Project Summary Environment: The University of California (UC) is a leading academic research institution where senior scientists have a long-standing tradition of training the next generation of scientists at UC, where seven percent of the nation’s Ph.D.’s are awarded each year and more than six thousand post-doctoral fellows choose to conduct their research. The UC campus in San Diego (UCSD) is key component, excelling at collaborative and innovative biological science. The environment here is rich in scientific discussion, training and exposition, with the Salk and Sanford-Burnham institutes within walking distance. Dr. Grainger has access to a wide variety of training sessions, classes and seminars for personal development and expansion of her scientific and leadership skills. There are a wealth of career development seminars available to be attended on a weekly basis, in addition to the innumerable scientific seminars. Research efforts are able to run smoothly here, due to the abundance of core facilities and expertise available in any area of science. Candidate: Dr. Grainger is a postdoctoral fellow in David Traver’s lab at UCSD whose ultimate career goal is to lead a research lab focused on stem cells at an R1 University. She was recruited to join Dr. Traver’s lab because of her strong background in developmental biology, Wnt signaling and animal models. Over the past 3.5 years, she has been working in collaboration with Dr. Karl Willert’s lab at UCSD, which has led to two publications: One is now published at Cell Reports; the second is currently in press at Zebrafish. Dr. Grainger is a leader in the lab, having established this project and being the driving force of the collaborative efforts of the Traver-Willert group. She is also a leader outside of the lab, where she organizes a postdoc seminar series focused on stem cells, enriching the community around her. She is well poised to execute the proposed work, achieve her career development and training goals and to contribute high impact research to the scientific community. Research: All mature blood cells are derived from hematopoietic stem cells (HSCs). Generating HSCs in vitro from pluripotent precursors such induced pluripotent stem cells would allow us to treat diseases such as leukemias and lymphomas with in vitro derived HSCs, circumventing the need for bone marrow donation. This would also establish an important cellular tool for understanding the underlying mechanisms of hematopoietic diseases. The overarching goal of this proposal is to gain a better understanding of one of the developmental cues that instruct HSC fate from mesoderm, the Wnt signaling cascade. This study will be conducted in zebrafish, which are an ideal system for direct visualization of blood stem cells and have conserved genetics. I hypothesize that an early Wnt/Fzd cue regulates later HSC amplification, which has an impact on adult HSC homeostasis. I propose to test this hypothesis by 1. Characterizing the Wnt/Fzds required, 2. Determining what happens downstream of this signal at the transcriptome level and 3. Discovering how this affects HSC homeostasis.