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:10608218
- 负责人:
- 金额:$ 9.5万
- 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 ProcessEpithelialEvolutionExtrahepaticGeneticGenetic ScreeningGoalsHeterogeneityImmuneImmune EvasionImmune systemImmunityImmunocompetentImmunocompromised HostImmunodeficient MouseImmunologic SurveillanceImmunologyImmunotherapyImpairmentKnock-in MouseLabelLaboratoriesLeadLesionLigandsLinkLiver neoplasmsLungMalignant Epithelial CellMalignant NeoplasmsMalignant neoplasm of liverMass Spectrum AnalysisMediatingMetastatic Neoplasm to the LiverMetastatic Neoplasm to the LungModelingMolecularMouse StrainsMusNatural ImmunityNatural Killer CellsNeoplasm MetastasisPathway interactionsPatientsPharmacologyPhasePlayPopulation HeterogeneityPrimary carcinoma of the liver cellsProcessProliferatingProteomeRegulatory PathwayResearchResearch Project GrantsRoleShapesSideSiteTP53 geneTechnologyTumor ImmunityValidationVirusWorkadaptive immunityanti-tumor immune responsebasecancer cellcancer therapycell injurydynamical evolutionexhaustionimmune clearanceimmunoregulationin vivoinsightmortalitymouse modelneoplastic cellnovelnovel strategiesprogramsrestorationsenescencesingle-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
癌症的发展伴随着免疫力的动态进化,这是一个众所周知的过程,被称为
免疫编辑。然而,每个阶段之间的转换的潜在机制,从免疫编辑到免疫编辑,
从监测到最终逃脱,仍然有很多需要发现。该提案旨在研究肝脏期间的免疫编辑
癌症的发生和发展,重点是衰老和转移。衰老是一个细胞周期,
抑制程序,限制受损细胞的扩张,并可引发抗肿瘤免疫,导致其
然而,在肿瘤发生过程中,有效的
衰老细胞的清除受到损害,从而阻碍了对该过程的更深的机理理解。
我的博士研究旨在确定驱动抗肿瘤免疫反应的关键分子和细胞参与者
在由野生型p53触发的衰老监视期间,已知p53调节癌症免疫。
我的论文项目的长期目标是确定衰老细胞如何容易受到
免疫监视以及在癌症发展过程中这些机制如何被逃避或绕过,
如特定目标1.1- 1.3中所述,我的论文工作已经证明,p53恢复
在免疫活性宿主中引发肝癌消退。使用不同的免疫缺陷小鼠品系
和药理学方法干扰特定的免疫区室,我们的初步数据表明,
获得性免疫在衰老监测中起着关键作用。
在增殖和衰老肿瘤细胞上进行,并显示了几个衰老细胞富集的细胞
在具体目标1.4和1.5中,我们的目标是在功能上,
询问这些衰老诱导因子作为新的衰老监视效应物的作用,
重点关注抗原呈递途径的调控网络,并通过利用多重体内遗传
我的博士后研究将继续研究免疫编辑,
从上皮细胞肿瘤的角度到更免疫学的角度,应用于
转移性免疫逃逸的问题。该提案旨在研究NK细胞的分子变化,
在与转移性细胞发生物理相互作用后,显示出对早期转移的控制。
在转移性定植的各个阶段,通过“SynNotch”技术标记与肿瘤细胞接合的NK细胞,
进行单细胞RNA-测序以揭示NK细胞的异质性(特异性目标2.1)和ATAC-测序以揭示
免疫衰竭的潜在表观遗传机制与改变程序的功能扰动
就业(具体目标2.2)。拟议的博士后研究将增加我们的机械理解
NK生物学在转移爆发期间的作用,为利用先天免疫对抗癌症铺平了新的道路。
总之,这两个项目将为免疫编辑提供不同的见解,其中阐明的机制可能是
用于开发新的免疫疗法,与现有的免疫疗法联合,以更有效地控制癌症。
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:
$ 9.5万 - 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:
$ 9.5万 - 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:
10651902 - 财政年份:2019
- 资助金额:
$ 9.5万 - 项目类别:
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