Histone modifications regulating phenotype plasticity: Role of non-canonical Wnt signaling
组蛋白修饰调节表型可塑性:非经典 Wnt 信号传导的作用
基本信息
- 批准号:10011776
- 负责人:
- 金额:$ 24.65万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-09-05 至 2022-08-31
- 项目状态:已结题
- 来源:
- 关键词:3-DimensionalAddressAffectAutomobile DrivingBiological AssayCell CycleCell LineCell MaintenanceCell ProliferationCellsCharacteristicsChromatinClinicalDataDevelopmentDrug resistanceDyesEpigenetic ProcessExhibitsGene ExpressionGene SilencingGenerationsGeneticGoalsGrowthHistone H3HumanHuman ResourcesHypermethylationIn VitroInvadedKDM5B geneKnowledgeLysineMaintenanceMalignant NeoplasmsMalignant neoplasm of prostateMelanoma CellMembraneMentorsMetastatic MelanomaMethylationMethyltransferaseMolecularNeoplasm MetastasisNude MicePathway interactionsPatientsPennsylvaniaPhenotypePlasmidsPopulationPublishingRegulationRelapseReporterResearchResearch PersonnelResistanceResourcesRoleSETDB1 geneSignal TransductionSkinSkin CancerSnailsStressSubcutaneous InjectionsThe Wistar InstituteTherapeuticTrainingTraining SupportTumor Stem CellsTumor Suppressor GenesTumor Suppressor ProteinsTumorigenicityUniversitiesWNT Signaling Pathwayaggressive therapybasebiological adaptation to stresscancer stem cellcancer typecareercareer developmentcell motilitychemotherapydesignhistone methylationhistone methyltransferasehistone modificationin vivoin vivo imaging systeminhibitor/antagonistinsightknock-downmalignant breast neoplasmmelanocytemelanomaneoplastic cellnovel therapeutic interventionpre-doctoralresponseself-renewalsenescenceskillssmall moleculestemstem-like cellsubcutaneoussuccesstargeted treatmenttherapy resistanttumortumor growthtumor progression
项目摘要
Project Summary
The goals of this Pathway to Independence Career Development proposal are to request support for
training to develop expertise in cancer epigenetics while addressing the role of slow cycling cells and
histone modifications in phenotype plasticity of highly resistant metastatic melanoma. K99/R00 support
during this part of my career will be integral to my successful development as an independent cancer
researcher. The training plan outlined in this proposal will take advantage of the extensive resources at The
Wistar Institute, University of Pennsylvania as well as Temple University. My training will also be guided by
senior personnel who have successfully mentored predoctoral, postdoctoral, and clinical fellows in
academic careers.
The scientific portion of this proposal focuses on experimentally determining the molecular mechanism
underlying phenotype plasticity and therapy resistance of invasive melanoma and the role of epigenetic
changes in phenotype plasticity and maintenance of slow cycling cells. The proposed studies are based on
my previous findings that a subset of melanoma cells, which express Wnt5A and p21, survive multiple types
of stress by entering a slow-cycling, senescent-like state, but still invade and retain the ability to form
metastases. My preliminary data suggest SEDTB1 expression correlates with an invasive phenotype in our
human melanoma cell lines and driving non-invasive melanoma cells to a more invasive phenotype, through
over expression of Wnt5A, increases SETDB1 expression. Expression of SETDB1, a histone
methyltransferase, has been implicated in the silencing of tumor suppressor p16. p16 is expressed in
melanocytes and early stages of melanoma but is lost during melanoma progression and this correlates
with p21 expression and a senescent-like response following stress. In melanoma, hypermethylation during
tumor progression is observed, which may block the expression of multiple tumor suppressor genes, but the
role of specific epigenetic changes in phenotype plasticity and drug resistance is still largely unknown.
Therefore, in line with these data I will explore the following scientific aims: 1) to elucidate the mechanism
by which Wnt5A and p21 promote the maintenance of slow cycling stem-like cells;; and 2) to determine if
histone modifications induced by SETDB1 promote phenotype plasticity and invasion in melanoma cells.
The completion of the scientific aims in this proposal will develop my research skills and knowledge in
cancer epigenetics while delineating the mechanism by which highly invasive resistant cells evade stress to
promote melanoma metastasis and therapy resistance.
项目摘要
这条独立职业发展之路提案的目标是请求支持,
培训,以发展癌症表观遗传学的专业知识,同时解决慢循环细胞的作用,
高耐药转移性黑色素瘤表型可塑性中组蛋白修饰 K99/R 00支持
在我职业生涯的这一部分将是我作为一个独立的癌症成功发展不可或缺的
研究员。本提案中概述的培训计划将利用
威斯塔研究所,宾夕法尼亚大学以及天普大学。我的培训也将由
高级人员谁成功地指导了博士前,博士后,和临床研究员在
学术生涯。
该提案的科学部分侧重于通过实验确定分子机制
侵袭性黑色素瘤的潜在表型可塑性和治疗抗性以及表观遗传学的作用
表型可塑性的变化和维持慢循环细胞。拟议的研究是基于
我之前的发现是,一个表达Wnt 5A和p21的黑色素瘤细胞亚群,
通过进入一个缓慢的衰老循环,衰老的状态,但仍然入侵和保留形成的能力,
我的初步数据表明,SEDTB 1表达与我们的研究中的侵袭性表型相关。
人黑色素瘤细胞系和驱动非侵袭性黑色素瘤细胞更具侵袭性的表型,通过
Wnt 5A的过度表达增加了SETDB 1的表达。 组蛋白SETDB 1的表达
p16在肿瘤抑制因子p16的沉默中有牵连。
黑色素细胞和早期阶段的黑色素瘤,但在黑色素瘤进展过程中丢失,这与
在黑色素瘤中,p21表达和应激后的衰老样反应中,
观察到肿瘤进展,这可能会阻断多种肿瘤抑制基因的表达,但
表型可塑性和耐药性中特定的表观遗传变化的作用在很大程度上仍然是未知的。
因此,根据这些数据,我将探讨以下科学目的:1)阐明机制
Wnt 5A和p21通过其促进慢循环干细胞样细胞的维持; 2)确定是否
SETDB 1诱导的组蛋白修饰促进黑色素瘤细胞的表型可塑性和侵袭性。
完成本计划书中的科学目标将发展我的研究技能和知识,
癌症表观遗传学,同时描绘了高侵袭性耐药细胞逃避压力的机制,
促进黑色素瘤转移和治疗抗性。
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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Marie Ruth Webster其他文献
Marie Ruth Webster的其他文献
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{{ truncateString('Marie Ruth Webster', 18)}}的其他基金
Histone modifications regulating phenotype plasticity: Role of non-canonical Wnt signaling
组蛋白修饰调节表型可塑性:非经典 Wnt 信号传导的作用
- 批准号:
10248309 - 财政年份:2019
- 资助金额:
$ 24.65万 - 项目类别:
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