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.
项目摘要
该提案的长期目标是了解干细胞的活性如何与
保持体内平衡和组织完整性。头发叶是重要的皮肤附属之一,是一个主意
范式解决这个问题。毛发经历生长周期(Anagen),破坏(Catagen)和
休息(端基)阶段。毛发叶状干细胞(HFSC)位于头发叶的永久性突出中,
一种称为凸起的结构。凸起周期中的HFSC很少。在正常的稳态期间,HFSCS
仅在Anagen的非常短暂的窗口中增殖,同时在所有其他阶段都保持静止。
HFSC在获胜后也可以激活。 HFSC活性的脱离导致严重
结果。例如,脱发(脱发)和伤口延迟的愈合可能是由于效率低下而引起的
HFSC的激活。相反,皮肤肿瘤,例如基底细胞癌和鳞状细胞癌,
可以源自HFSC高增殖。干细胞活性受其微环境的严重影响,
被称为利基。传统上,关于利基市场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,包括我自己的发现STEM的重要性
细胞后代作为几个脊椎动物和无脊椎动物干细胞系统中的小众成分,以前是
无法识别。在头发叶中,我的初步研究确定了两个重要的后代种群
HFSC增殖的关键调节剂。该提议要检验的中心假设是反馈
HFSC后代的调节对于HFSC的适当行为和活性至关重要。这个假设将是
在本赠款申请中通过实验测试:1)检查后代2表示的候选信号)
确定在生理和病理条件下后代对HFSC激活的贡献
3)确定后代表达的新功能因素以调节HFSC。候选信号将是
在修补阶段进行了调查。后代在动态条件下以及
后代表达的已确定的新因素将在独立阶段进行跟进。成功的
拟议实验的完成将大大提高我们对细胞类型的理解和
调节HFSC增殖和静止的信号。此外,这些提出的研究将有可能
导致开发与异常干细胞活性相关的皮肤疾病的治疗治疗方法。
我的长期职业目标是领导一个成功,独立且资金丰富的实验室,研究皮肤和
干细胞生物学。我的毕业生和博士后培训的最新培训在技术上使我做好了准备
在智力上开发严格的研究项目。这个职业发展奖和我建议的研究
计划将进一步为我提供扩大我对皮肤干细胞生物学和鼠标知识的机会
遗传学,在生物信息学分析中获得新技能,小鼠胚胎操纵,基于图像的FACS分析,
并进一步积累经验以提高心理,表现和写作技巧,所有这些都是
对于我作为独立研究人员的未来成功至关重要。修补过程中产生的试剂
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
以及它的两个邻近机构,纪念馆的癌症中心和威尔·康奈尔(Weill Cornell)
医学院,提供主要的研究环境以及许多讲习班和课程,以支持我
拟议的研究和我的职业发展。我将与我的心理Elaine博士不断互动
Fuchs,我的合作者Olivier Elemento博士以及皮肤和老鼠发育生物学社区
纽约地区。他们将共同评估我的进度,并提供关键或建议。总而言之,
拟议的研究和职业发展计划将更好地为我的独立科学职业做好准备,
确保我实现长期职业目标,并允许我为我们的持续贡献
了解干细胞活性如何调节体内稳态和疾病。
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:
10579275 - 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:
10341428 - 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:
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:
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:
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:
9349455 - 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:
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:
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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