Regulation of Quiescence and Activation in Skin Stem Cells
皮肤干细胞静止和激活的调节
基本信息
- 批准号:8920475
- 负责人:
- 金额:$ 24.9万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2014
- 资助国家:美国
- 起止时间:2014-09-08 至 2017-08-31
- 项目状态:已结题
- 来源:
- 关键词:AddressAlopeciaAnimalsApplications GrantsAreaBasal cell carcinomaBehaviorBioinformaticsBiologyCell LineageCell ProliferationCellsCommunitiesCritiquesDataDevelopment PlansDevelopmental BiologyDiseaseEducational workshopEmbryoEnsureEnvironmentEquilibriumErinaceidaeFeedbackFundingFutureGeneticGenomic approachGoalsGrowthHairHair follicle structureHomeostasisImageImpaired wound healingInstitutionInvertebratesK-Series Research Career ProgramsKeratinKnock-outKnowledgeLaboratory StudyLeadLearningLifeMediatingMemorial Sloan-Kettering Cancer CenterMentorsMitogensMusNatural regenerationNew YorkOrganPapillomaPhasePhysiologicalPlayPopulationProliferatingReagentRegenerative MedicineRegulationResearchResearch PersonnelResearch Project GrantsRestRoleSignal TransductionSkinSkin CancerSkin NeoplasmsSourceSquamous cell carcinomaStem cellsStructureSystemTamoxifenTestingTissuesUniversitiesWNT Signaling PathwayWound HealingWritingadult stem cellappendagebasecareercareer developmentcell behaviorcell typeclinical applicationdesignexperiencefollow-upimprovedin vivoinjury and repairinsightlentiviral-mediatedmedical schoolsnovelpost-doctoral trainingpreventprogramsresearch studyresponseself-renewalskillsskin disordersmoothened signaling pathwaystem cell biologystem cell nichesuccesstherapeutic developmenttumor
项目摘要
Project Summary
The longterm objective of this proposal is to understand how the activity of stem cells is properly regulated to
maintain homeostasis and tissue integrity. The hair follicle, one of the important skin appendages, is an ideal
paradigm to address this problem. Hair follicles undergo cycles of growth (anagen), destruction (catagen) and
rest (telogen) phases. Hair follicle stem cells (HFSCs) are located in a permanent protrusion of the hair follicle,
a structure known as the bulge. HFSCs in the bulge cycle infrequently. During normal homeostasis, HFSCs
only proliferate in a very transient window of anagen, while remaining quiescent during all the other phases.
HFSCs can also become activated upon wounding. Disregulation of HFSC activity results in severe
consequences. For example, alopecia (hair loss) and delayed wound healing may arise from inefficient
activation of HFSCs. On the contrary, skin tumors, such as basal cell carcinoma and squamous cell carcinoma,
can derive from HFSC hyperproliferation. Stem cell activity is heavily influenced by their microenvironment,
known as the niche. Traditionally, studies about niche focus only on the surrounding heterologous cell types,
i.e., cells originated from a different lineage. Recent studies including my own discover the importance of stem
cell progeny as niche components in several vertebrate and invertebrate stem cell systems, which is previously
unrecognized. In the hair follicle, my preliminary studies have identified two important progeny populations as
critical regulators for HFSC proliferation. The central hypothesis to be tested by this proposal is that feedback
regulation from HFSC progeny is crucial for the proper behavior and activity of HFSCs. This hypothesis will be
tested in this grant application by experiments that: 1) examine candidate signals expressed by the progeny 2)
determine the contributions of the progeny to HFSC activation under physiological and pathological conditions
and 3) identify novel functional factors expressed by the progeny to regulate HFSCs. Candidate signals will be
investigated during the mentored phase. The contributions of progeny under dynamic conditions as well as
identified novel factors expressed by the progeny will be followup during the independent phase. Successful
completion of the proposed experiments will significantly advance our understanding of the cell types and
signals that regulate HFSC proliferation and quiescence. In addition, these proposed studies will potentially
lead to the development of therapeutic treatments for skin disorders associate with aberrant stem cell activity.
My longterm career goal is to lead a successful, independent, and wellfunded laboratory studying skin and
stem cell biology. My graduate and postdoctoral training up to date has prepared me technically and
intellectually to develop rigorous research projects. This career development award and my proposed research
plan will further provide me with opportunities to expand my knowledge in skin stem cell biology and mouse
genetics, gain new skills in bioinformatics analysis, mouse embryo manipulation, imagebased FACS analysis,
and further accumulate experience to improve mentoring, presentation, and writing skills, all of which are
critical to my future success as an independent researcher. The reagents generated during the mentored
phase will also help to build up my research program in the independent phase. The Rockefeller University
together with its two neighboring institutions, Memorial SloanKettering Cancer Center and Weill Cornell
Medical College, offer a prime research environment and many workshops and courses to support my
proposed research and my career development. I will have constant interactions with my mentor Dr. Elaine
Fuchs, my collaborator Dr. Olivier Elemento, and the skin and mouse developmental biology communities in
the New York area. Together they will assess my progress and provide critique or advice. In summary, the
proposed studies and career development plan will better prepare me for my independent scientific career,
ensure that I achieve my longterm career goals, and allow me to make continuous contributions towards our
understanding of how stem cell activity is regulated in homeostasis and disease.
项目概要
该提案的长期目标是了解如何正确调节干细胞的活性
保持体内平衡和组织完整性。毛囊是重要的皮肤附属物之一,是理想的选择。
解决这个问题的范例。毛囊经历生长(毛发生长初期)、破坏(毛发生长中期)和毛发生长周期
休止期(休止期)毛囊干细胞(HFSC)位于毛囊的永久突出处,
在正常的稳态过程中,HFSC 很少出现在膨胀周期中。
仅在生长期非常短暂的窗口中增殖,而在所有其他阶段保持静止。
HFSC 也可以在受伤时被激活。 HFSC 活性失调会导致严重的后果。
例如,效率低下可能会导致脱发和伤口愈合延迟。
相反,皮肤肿瘤,例如基底细胞癌和鳞状细胞癌,
源自 HFSC 干细胞的过度增殖,其活性很大程度上受到其微环境的影响,
传统上,有关生态位的研究仅关注周围的异源细胞类型,
即,细胞起源于不同的谱系。最近的研究,包括我自己的研究,发现了干的重要性
细胞后代作为几种脊椎动物和无脊椎动物干细胞系统中的利基成分,这在以前是
在毛囊中,我的初步研究已经确定了两个重要的后代群体:
该提案要检验的核心假设是反馈。
HFSC 后代的调节对于 HFSC 的正常行为和活动至关重要。
在本拨款申请中通过实验进行了测试:1)检查后代表达的候选信号2)
确定生理和病理条件下后代对 HFSC 激活的贡献
3) 鉴定后代表达的调节 HFSC 的新功能因子。
在指导阶段以及动态条件下研究后代的贡献。
后代表达的已确定的新因素将在独立成功阶段进行跟进。
完成所提出的实验将显着增进我们对细胞类型和
此外,这些拟议的研究可能会产生调节 HFSC 增殖和静止的信号。
导致与异常干细胞活性相关的皮肤疾病的治疗方法的开发。
我的长期职业目标是领导一个成功、独立且资金充足的实验室,研究皮肤和
迄今为止,我的研究生和博士后培训使我在技术和能力上做好了准备。
智力开发严格的研究项目这个职业发展奖和我提出的研究。
计划将进一步为我提供扩大皮肤干细胞生物学和小鼠知识的机会
遗传学,获得生物信息学分析、小鼠胚胎操作、基于图像的 FACS 分析等方面的新技能,
并进一步积累经验以提高指导、演讲和写作技巧,所有这些都是
在指导期间产生的试剂对我未来作为独立研究人员的成功至关重要。
阶段还将有助于在独立阶段建立我的研究计划。洛克菲勒大学。
及其两个邻近机构:纪念斯隆凯特琳癌症中心和威尔康奈尔大学
医学院提供一流的研究环境和许多研讨会和课程来支持我
我将与我的导师伊莱恩博士不断互动。
Fuchs、我的合作者 Olivier Elemento 博士以及皮肤和小鼠发育生物学界
他们将共同评估我的进展并提供批评或建议。
拟议的学习和职业发展计划将使我更好地为我的独立科学事业做好准备,
确保我实现我的长期职业目标,并让我能够为我们的事业做出持续的贡献
了解干细胞活性如何在稳态和疾病中受到调节。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Ya-Chieh Hsu其他文献
Ya-Chieh Hsu的其他文献
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{{ truncateString('Ya-Chieh Hsu', 18)}}的其他基金
Rapid functional genetics to study stem cell-niche interactions in the skin
快速功能遗传学研究皮肤干细胞生态位相互作用
- 批准号:
10341428 - 财政年份:2022
- 资助金额:
$ 24.9万 - 项目类别:
Rapid functional genetics to study stem cell-niche interactions in the skin
快速功能遗传学研究皮肤干细胞生态位相互作用
- 批准号:
10579275 - 财政年份:2022
- 资助金额:
$ 24.9万 - 项目类别:
Posttranscriptional control of epidermal progenitors senescence
表皮祖细胞衰老的转录后控制
- 批准号:
9764677 - 财政年份:2019
- 资助金额:
$ 24.9万 - 项目类别:
Posttranscriptional control of epidermal progenitors senescence
表皮祖细胞衰老的转录后控制
- 批准号:
10359741 - 财政年份:2019
- 资助金额:
$ 24.9万 - 项目类别:
Posttranscriptional control of epidermal progenitors senescence
表皮祖细胞衰老的转录后控制
- 批准号:
10582626 - 财政年份:2019
- 资助金额:
$ 24.9万 - 项目类别:
Interdependence of lineages within the mammalian skin
哺乳动物皮肤内谱系的相互依赖性
- 批准号:
9218853 - 财政年份:2016
- 资助金额:
$ 24.9万 - 项目类别:
Interdependence of lineages within the mammalian skin
哺乳动物皮肤内谱系的相互依赖性
- 批准号:
9755354 - 财政年份:2016
- 资助金额:
$ 24.9万 - 项目类别:
Interdependence of lineages within the mammalian skin
哺乳动物皮肤内谱系的相互依赖性
- 批准号:
9349455 - 财政年份:2016
- 资助金额:
$ 24.9万 - 项目类别:
Regulation of Quiescence and Activation in Skin Stem Cells
皮肤干细胞静止和激活的调节
- 批准号:
8902307 - 财政年份:2014
- 资助金额:
$ 24.9万 - 项目类别:
Regulation of Quiescence and Activation in Skin Stem Cells
皮肤干细胞静止和激活的调节
- 批准号:
8509979 - 财政年份:2013
- 资助金额:
$ 24.9万 - 项目类别:
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