Investigating the molecular and cellular mechanisms of virus-associated hepatocellular carcinoma
研究病毒相关性肝细胞癌的分子和细胞机制
基本信息
- 批准号:10651902
- 负责人:
- 金额:$ 9.83万
- 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:2019-09-01 至 2026-03-31
- 项目状态:未结题
- 来源:
- 关键词:ATAC-seqAddressAdvanced Malignant NeoplasmAllelesAntigen PresentationAntigen Presentation PathwayAutomobile DrivingBiological PhenomenaBiologyBypassCancer ControlCancer EtiologyCancer PatientCell AgingCell CommunicationCell Cycle ArrestCell Surface ProteinsCell surfaceCellsCharacteristicsCuesDataDevelopmentDiseaseDisease OutbreaksEngineeringEnvironmentEpigenetic ProcessEpitheliumEvolutionExtrahepaticGeneticGenetic ScreeningGoalsHeterogeneityImmuneImmune EvasionImmune systemImmunityImmunocompetentImmunocompromised HostImmunodeficient MouseImmunologic SurveillanceImmunologyImmunotherapyImpairmentKnock-in MouseLabelLaboratoriesLesionLigandsLinkLiver neoplasmsLungMalignant Epithelial CellMalignant NeoplasmsMalignant neoplasm of liverMass Spectrum AnalysisMediatingMetastatic Neoplasm to the LiverMetastatic Neoplasm to the LungModelingMolecularMouse StrainsMusNatural ImmunityNatural Killer CellsNeoplasm MetastasisPathway interactionsPatientsPhasePlayPopulation HeterogeneityPostdoctoral FellowPredispositionPrimary carcinoma of the liver cellsProcessProliferatingProteomeRegulatory PathwayResearchResearch Project GrantsRoleShapesSideSiteTP53 geneTechnologyTumor ImmunityTumor PromotionValidationVirusWorkadaptive immunityanti-tumor immune responsecancer cellcancer therapycell injurydynamical evolutionexhaustionimmune clearanceimmunoregulationin vivoinsightmolecular dynamicsmortalitymouse modelneoplastic cellnovelnovel strategiespharmacologicprogramsrestorationsenescencesingle-cell RNA sequencingtooltranscriptome sequencingtumortumor initiationtumor progressiontumor-immune system interactionstumorigenesis
项目摘要
PROJECT SUMMARY/ABSTRACT
Cancer development accompanies with the dynamic evolution of immunity, a well-known process termed as
immunoediting. However, the underlying mechanisms of the transition between each phase, from immune
surveillance to final escape, still remain a lot to discover. This proposal aims to study immunoediting during liver
cancer development and progression, with a focus on senescence and metastasis. Senescence is a cell cycle
arrest program that limits the expansion of damaged cells and can trigger anti-tumor immunity that leads to their
elimination in vivo, serving as a potent barrier to tumorigenesis. However, during tumor initiation, the effective
clearance of senescent cells is compromised, warranting a deeper mechanistic understanding of this process.
My doctoral research aims to identify critical molecular and cellular players driving anti-tumor immune responses
during senescence surveillance triggered by wildtype p53, which is known to modulates cancer immunity. The
long-term objective of my thesis project is to define the mechanisms of how senescent cells are susceptible to
immune surveillance and how these mechanisms are evaded or bypassed during cancer development and
progression. As described in Specific Aims 1.1-1.3, my thesis work has demonstrated that the p53 restoration
triggers regression of liver cancers in an immunocompetent host. Using different immunodeficient mouse strains
and pharmacological approaches perturbing specific immune compartments, our preliminary data suggests that
adaptive immunity plays a key role in senescence surveillance. RNA-seq and mass spectrometry were
conducted on both proliferating and senescent tumor cells and revealed several senescence-enriched cell
surface factors related to epithelial-immune cell interactions. In Specific Aims 1.4 and 1.5, we aim to functionally
interrogate the role of these senescence-induced factors as novel senescence surveillance effectors, with a
focus on the regulatory network of antigen presentation pathway and, by exploiting multiplexed in vivo genetic
screens established in the Lowe laboratory. My postdoctoral research will continue to study immunoediting with
a slight change of the focus from the epithelial-tumor angle to a more immunology-rich perspective, applied to
the problem of metastatic immune escape. The proposal aims to investigate the molecular changes of NK cells,
shown to have control of early metastasis, after having physical interaction with metastatic cells. During different
stages of metastatic colonization, tumor-engaging NK cells are labeled via “SynNotch” technology and will be
subjected to single-cell RNA-seq to unveil the NK cell heterogeneity (Specific Aim 2.1) and ATAC-seq to reveal
potential epigenetic mechanisms of immune exhaustion with functional perturbation of the altered programs
employed (Specific Aim 2.2). The proposed postdoctoral research will increase our mechanistic understanding
of NK biology during the metastasis outbreak, paving new paths to harness innate immunity against cancer. In
all, these two projects will offer distinct insight into immunoediting, of which the elucidated mechanisms could be
exploited for developing novel immunotherapies, jointly with existing ones for more effective cancer control.
项目摘要/摘要
癌症发展涉及免疫的动态演变,这是一个称为著名的过程
免疫程序。但是,从免疫
对最终景观的监视,仍然有很多事情要发现。该提案旨在研究肝脏期间的免疫程序
癌症的发展和进展,重点是感应和转移。衰老是一个细胞周期
限制受损细胞扩大的逮捕程序,并可能触发抗肿瘤免疫力,从而导致
在体内消除,是肿瘤发生的潜在障碍。但是,在肿瘤开始期间,有效
感觉细胞的清除受到损害,需要对该过程有更深入的机械理解。
我的博士研究旨在识别驱动抗肿瘤免疫反应的关键分子和细胞玩家
在野生型P53触发的感受期间,已知可以调节癌症免疫力。这
我的论文项目的长期目标是定义感觉细胞如何容易受到的机制
免疫监视以及如何在癌症发展和
进展。如特定目的1.1-1.3中所述,我的论文工作证明了p53恢复
触发免疫能力宿主中肝癌的回归。使用不同的免疫缺陷小鼠菌株
我们的初步数据表明,对特定免疫公司的药理方法扰乱了特定的免疫公司
自适应免疫力在感应爆发中起关键作用。 RNA-seq和质谱是
在增殖和感觉肿瘤细胞上进行,并揭示了几个富含感应的细胞
表面因素与上皮免疫细胞相互作用有关。在特定目标1.4和1.5中,我们的目标是在功能上
询问这些感应诱导的因子作为新的感应爆发效应的作用,
专注于抗原表现途径的调节网络,并通过利用多重体内遗传
在Lowe实验室中建立的屏幕。我的博士后研究将继续研究免疫程序
将焦点从上皮角度转变为更富含免疫学的视角,应用于
转移性免疫逃生的问题。该建议旨在研究NK细胞的分子变化,
与转移细胞发生物理相互作用后,显示出对早期转移的控制。在不同的过程中
转移性定殖,肿瘤吸引NK细胞的阶段通过“ synnotch”技术标记,将是
受到单细胞RNA-seq的影响,以揭示NK细胞异质性(特定目标2.1)和ATAC-SEQ揭示
免疫疲劳的潜在表观遗传机制,其功能扰动的变化程序
雇用(特定目标2.2)。拟议的博士后研究将增加我们的机械理解
NK生物学爆发期间的NK生物学,为利用先天免疫的新途径铺平了抗癌。在
这两个项目将提供对免疫编辑的独特见解,阐明机制可能是
利用用于开发新型免疫疗法的情况,共同与现有的免疫疗法共同进行,以进行更有效的癌症控制。
项目成果
期刊论文数量(0)
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{{ truncateString('HSUAN-AN CHEN', 18)}}的其他基金
Dissecting the mechanisms of immune surveillance and evasion in liver cancer
剖析肝癌免疫监视和逃避的机制
- 批准号:
10381134 - 财政年份:2021
- 资助金额:
$ 9.83万 - 项目类别:
Dissecting the mechanisms of immune surveillance and evasion in liver cancer
剖析肝癌免疫监视和逃避的机制
- 批准号:
10013158 - 财政年份:2019
- 资助金额:
$ 9.83万 - 项目类别:
Investigating the molecular and cellular mechanisms of virus-associated hepatocellular carcinoma
研究病毒相关性肝细胞癌的分子和细胞机制
- 批准号:
10608218 - 财政年份:2019
- 资助金额:
$ 9.83万 - 项目类别:
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