The impact of coding region variants on mutant p53 biology
编码区变异对突变 p53 生物学的影响
基本信息
- 批准号:10304135
- 负责人:
- 金额:$ 43.6万
- 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:2019-12-01 至 2024-11-30
- 项目状态:已结题
- 来源:
- 关键词:AcheAddressAfricanAfrican American populationAfrican ancestryAllelesArginineBiochemicalBiologyCancer BiologyCancer Institute of New JerseyChromatin Remodeling FactorClinical TrialsCodeCodon NucleotidesDNA Binding DomainDataETS2 geneFox Chase Cancer CenterGene CombinationsGene ExpressionGenesGenetic PolymorphismGenetic TranscriptionGrowthHumanImpairmentIn VitroInvestigationKnowledgeLeadLearningMalignant NeoplasmsMediatingMediator of activation proteinMetabolismMinorMissense MutationMolecularMolecular ConformationMutateMutationNeoplasm MetastasisOncogenicPTEN genePathogenicityPathway interactionsPharmaceutical PreparationsPopulationPrognosisProlineProteinsPublishingReportingResearchResearch PersonnelRoleSamplingSingle Nucleotide PolymorphismStructureSumTP53 geneTestingThe Cancer Genome AtlasTherapeuticTransactivationTumor BiologyTumor SuppressionTumor Suppressor GenesTumor Suppressor ProteinsTumor-DerivedUnderrepresented PopulationsUrsidae FamilyVariantWomanWorkcancer riskcancer therapycaucasian Americanclinically relevantcytotoxicitydesignethnic biasfollow-upfrontiergain of functiongain of function mutationgenetic variantimproved functioningin vivomalignant breast neoplasmminority health disparitymouse modelmutantmutant mouse modelneoplastic cellnovelpersonalized medicineprotein degradationprotein functionprotein protein interactionrecruittooltreatment responsetumortumor growthtumor metabolismtumor progression
项目摘要
Project Summary
It is now well accepted that tumor-derived mutant forms of p53 are potently oncogenic. Silencing mutant
p53, or inducing the degradation of this protein, can markedly impair tumor growth in vitro and tumor
progression in vivo. The ability of mutant p53 to drive tumor progression is frequently mediated by protein-
protein interaction, and this is often referred to as the “gain of function” (GOF) activity of mutant p53. One
of our gaps in knowledge has been the identification of key GOF activities of mutant p53. Another has
been investigation into how coding region SNPs (single nucleotide polymorphisms) in p53 influence the
mutant p53 GOF. One of the Holy Grails of cancer biology has been the identification of compounds that
can reactivate the p53 pathway in tumors containing mutant p53, by refolding mutant forms of p53 into wild
type conformation and activity. Several groups have reported the identification of compounds that act in
these ways. Another key gap in our knowledge has been how coding region SNPs (single nucleotide
polymorphisms) in p53 impact the folding of mutant p53, and the efficacy of compounds that refold mutant
p53.
In this application, we take aim at two coding region SNPs in p53: Pro72Arg and Tyr107His. We recently
published that the codon 72 variation is a potent intragenic modifier of mutant p53 GOF. Specifically, the
Arg (R72) variant of mutant p53 is a superior mediator of tumor cell invasiveness and is associated with
poor prognosis in women with breast cancer. We will delve into an investigation of the influence of this
SNP on mutant p53 GOF, using novel mouse models for the R175H mutation, containing either P72 or
R72. We will learn their impact on p53 structure using NMR, and on their influence on the efficacy of p53-
refolding compounds. This aim constitutes a structural, molecular and in vivo analysis of the codon 72
SNP of mutant p53.
We have obtained data that the Y017H variant of p53 alters the structure and activity of this protein. We
will explore the effect of this African-specific SNP on p53 function in a novel mouse model. We have
identified genes with impaired transactivation by Y107H, including the chromatin modifier PADI4;; we will
explore its impact on p53 function and tumor suppression. In sum, for both aims we employ a combination
of gene expression, protein-protein interaction, cytotoxicity and novel mouse models. We have recruited
expert collaborators like Donna George (Penn), John Karanicolas (Fox Chase Cancer Center) and
Darren Carpizo (Rutgers-Cancer Institute of New Jersey). These Investigators bring to bear their
complimentary expertise to address an important and clinically-relevant question: how can we better
harness p53 to eradicate cancer.
项目摘要
现在,p53的肿瘤衍生的突变体形式是局部致癌的,这是完全接受的。沉默突变体
p53,或诱导该蛋白质的降解,可以显着损害体外和肿瘤的肿瘤生长
体内进展。突变体p53驱动块茎进展的能力通常是由蛋白质介导的
蛋白质相互作用,通常称为突变体p53的“功能获得”(GOF)活性。一
我们在知识方面的差距是突变体p53的关键GOF活性的鉴定。另一个有
对p53中编码区域SNP(单核苷酸多态性)的投资如何影响
突变p53 GOF。癌症生物学的圣杯之一是鉴定出来的化合物
可以通过将p53的突变体形式重新折叠为野生
类型构象和活性。 几个小组报告了对作用的化合物的识别
这些方式。我们知识上的另一个关键差距是编码区域SNP(单核苷酸)的编码方式
p53中的多态性)影响突变体p53的折叠,以及重新折叠突变体的化合物的效率
p53。
在此应用程序中,我们将PRO72ARG和TYR107HIS中的两个编码区域SNP瞄准。我们最近
发表的密码子72变化是突变体p53 GOF的有效内基因修饰剂。具体来说,
突变体p53的ARG(R72)变体是肿瘤细胞侵入性的优质介体,与
乳腺癌女性的预后不良。我们将深入研究这一影响的投资
突变体p53 GOF上的SNP,使用新型小鼠模型进行R175H突变,其中包含p72或
R72。我们将使用NMR学习对p53结构的影响,以及对p53-效率的影响。
重折叠化合物。该目标构成了密码子72的结构,分子和体内分析
突变p53的SNP。
我们已经获得了p53的Y017H变体改变该蛋白质的结构和活性。我们
将在新型的小鼠模型中探索该非洲特异性SNP对p53功能的影响。我们有
鉴定出Y107H反式激活受损的基因,包括染色质修饰剂PADI4;
探索其对p53功能和肿瘤抑制的影响。总而言之,对于这两个目标,我们都会雇用一个组合
基因表达,蛋白质 - 蛋白质相互作用,细胞毒性和新型小鼠模型。我们已经招募了
唐娜·乔治(Donna George)(宾夕法尼亚州),约翰·卡拉尼科斯(John Karanicolas)(福克斯·蔡斯癌症中心)和
Darren Carpizo(新泽西州的罗格斯癌研究所)。这些调查人员带来了他们的
免费的专业知识,以解决一个重要且与临床上的重要问题:我们如何更好
利用p53来消除癌症。
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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Maureen E. Murphy其他文献
Maureen E. Murphy的其他文献
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{{ truncateString('Maureen E. Murphy', 18)}}的其他基金
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p53 多态性变体的功能分析 - Diversity Supplement
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The impact of coding region variants on mutant p53 biology
编码区变异对突变 p53 生物学的影响
- 批准号:
10523512 - 财政年份:2019
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$ 43.6万 - 项目类别:
The impact of coding region variants on mutant p53 biology
编码区变异对突变 p53 生物学的影响
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