Targeting NQO1+ tumor to trigger innate and adaptive immunity
Targeting NQO1+ tumor to trigger innate and adaptive immunity
批准号:
10428620
负责人:
Xiumei Huang
金额:
$45.05万
依托单位国家:
美国
项目类别:
财政年份:
2020
资助国家:
美国
项目状态:
未结题
起止时间:
2020-07-13 至 2025-06-30
关键词:
Antigen-Presenting CellsAntigensBiological AssayCD8B1 geneCause of DeathCellsClinicalCombined Modality TherapyComplexCross-PrimingCytotoxic T-LymphocytesDNADNA DamageDiagnosisElectronsEnzymesGenomicsGoalsImmuneImmune checkpoint inhibitorImmunotherapyIndividualInterferon Type IInterferonsMalignant NeoplasmsMediatingMitochondriaMitochondrial DNAModelingMolecularMusNQO1 geneNatural ImmunityNecrosisNeutrophilic InfiltrateOxidoreductasePD-1 blockadePatternPhagocytesPharmaceutical PreparationsProdrugsProductionQuinonesReactive Oxygen SpeciesRefractoryRelapseResearchResistanceRoleSignal TransductionSolidSolid NeoplasmSourceStimulator of Interferon GenesT-LymphocyteTherapeuticTumor ImmunityTumor SuppressionUp-Regulationadaptive immunityanti-PD-L1anti-PD-L1 therapyanti-tumor immune responsebeta-Lapachonecancer cellimmune checkpoint blockadeimmunogenic cell deathimprovedin vivoinnate immune sensingmacrophageneoplastic cellneutrophilnew combination therapiesnovelpre-clinicalprogrammed cell death ligand 1recruitresistance mechanismresponsetargeted treatmenttherapeutic vaccinetumortumor DNAtumor growthtumor microenvironmentuptake
中文摘要
摘要
我们的长期目标是开发新的抗肿瘤疗法,以治疗高水平(> 100倍)的癌症。
NAD(P)H:醌氧化还原酶1(NQO 1)。 NQO 1生物活性药物β-拉帕酮(β-Lapachone,β-Laplap)选择性地
靶向NQO 1+肿瘤,并被NQO 1激活产生活性氧(ROS),导致
广泛的DNA损伤和PARP 1-β驱动的肿瘤程序性坏死。我们的初步研究表明
中性粒细胞介导的先天免疫和CD 8-T介导的适应性免疫都是抗肿瘤免疫所必需的。
β-Alkylap在体内的功效。 此外,我们以前的研究表明,靶向NQO 1有效地触发先天性
肿瘤微环境(TME)内的传感与免疫疗法协同作用,以克服适应性
阻力 我们的目标是定义和描述肿瘤特异性ROS和DNA的作用机制。
β-Alkylap诱导的损伤,刺激抗肿瘤免疫,并确定β-Alkylap如何协同免疫
检查点阻断疗法我们的中心假设是(i)β-glap处理触发免疫原性细胞死亡
(ICD)并诱导损伤相关分子模式(DAMPs)的释放;(ii)吞噬细胞/抗原呈递
细胞(APCs)募集促进细胞毒性T细胞(CTL)的交叉免疫启动,
增加抗原/DNA摄取和I型干扰素(IFN)产生;(iii)TME内PD-IL 1上调
有助于肿瘤复发,并为β-肾上腺素联合免疫治疗提供了治疗窗口
检查站封锁。 我们提出以下具体目标。 目的1:阐明β-环糊精的作用机制
先天免疫感应的触发ICD我们的工作假设是,β-肾上腺素激活ICD的先天感觉
通过释放DAMP。我们将通过治疗性疫苗来评估β-glap在体内刺激肿瘤ICD的能力
比色法我们还将确定哪种类型的肿瘤DNA(基因组或线粒体)是肿瘤的主要来源。
β-环糊精处理后的IFN产生。目的2:定义肿瘤细胞和免疫细胞的相互作用如何发生
β-环糊精诱导的抗肿瘤免疫。我们的工作假设是β-lap-β-lap诱导的中性粒细胞交叉T
细胞直接或与DC/巨噬细胞相互作用以引发T细胞。我们将确定β-环糊精治疗的效果
对参与T细胞交叉致敏的cGAS/STING/IFN的影响。 目的3:确定β-羟丙基甲基纤维素
与免疫检查点阻断疗法协同有效地杀死NQO 1+肿瘤。 我们的工作
假设TME内PD-IL 1增加有助于大肿瘤在初始应答后的肿瘤复发
到β-羟甲基纤维素 我们将确定在TME内哪种类型的细胞中PD-IL 1表达上调。 我们还将
确定哪种类型的PD-IL 1-IL 1表达细胞对于条件性免疫缺陷小鼠中的协同效应是必需的。
肿瘤、DC或巨噬细胞上的PD-IL 1缺陷。 影响:这些研究将描述β-羟甲基纤维素的作用,
在肿瘤细胞选择性先天感应中,导致T细胞依赖性肿瘤控制。此外,我们将阐明β-环糊精
Lap克服了对抗PD-IL 1治疗适应性抵抗。 这项研究将为新的
本发明提供了用于NQO 1+实体瘤的联合疗法,并拓宽了免疫检查点抑制剂的临床效用。
英文摘要
ABSTRACT
Our long-term goal is to develop novel antitumor therapies to treat cancer with elevated (> 100-fold) levels of
NAD(P)H:quinone oxidoreductase 1 (NQO1). β-Lapachone (β-lap), an NQO1 bioactivatable drug, selectively
targets NQO1+ tumors and is activated by NQO1 to generate reactive oxygen species (ROS), leading to
extensive DNA damage and PARP1-driven tumor programmed necrosis. Our preliminary studies demonstrate
that both neutrophil-mediated innate immunity and CD8-mediated adaptive immunity are required for antitumor
efficacy of β-lap in vivo. Furthermore, our previous studies reveal that targeting NQO1 potently triggers innate
sensing within tumor microenvironment (TME) that synergizes with immunotherapy to overcome adaptive
resistance. Our objective here is to define and delineate the mechanism(s) of tumor-specific ROS and DNA
damage induced by β-lap that stimulates antitumor immunity, and determine how β-lap synergizes with immune
checkpoint blockade therapy. Our central hypothesis is that (i) β-lap treatment triggers immunogenic cell death
(ICD) and induces damage-associated molecular patterns (DAMPs) release;; (ii) phagocytes/antigen-presenting
cells (APCs) recruitment promotes cross-priming of cytotoxic T cells (CTLs) for suppression of tumor by
increasing antigen/DNA uptake and type I interferons (IFNs) production;; and (iii) upregulated PD-L1 within TME
contributes to tumor relapse and provides therapeutic window for combination therapy of β-lap with immune
checkpoint blockade. We propose the following Specific Aims. AIM 1: Elucidate the mechanism of β-lap-
triggered ICD for innate immune sensing. Our working hypothesis is that β-lap triggers ICD for innate sensing
via the release of DAMPs. We will assess the ability of β-lap to stimulate tumor ICD in vivo by therapeutic vaccine
assay. We will also determine which type(s) of tumor DNA (genomic or mitochondrial) is the major source(s) of
IFNs production after β-lap treatment. AIM 2: Define how tumor cells and immune cells cross-talk occurs
in β-lap-induced antitumor immunity. Our working hypothesis is that β-lap-induced neutrophils cross-prime T
cells directly or interact with DCs/macrophages to prime T cells. We will determine the effects of β-lap treatment
on cGAS/STING/IFNs involved in T cells cross-priming. AIM 3: Determine the mechanism by which β-lap
synergizes with immune checkpoint blockade therapy to efficaciously kill NQO1+ tumors. Our working
hypothesis is that increased PD-L1 within TME contributes to tumor relapse of large tumors after initial responses
to β-lap. We will determine in which type(s) of cells PD-L1 expression is upregulated within TME. We will also
determine which type(s) of PD-L1-expressing cells is essential for the synergistic effect in mice with conditional
deficiencies of PD-L1 on tumors, DCs or macrophages. IMPACT: These studies will delineate the role of β-lap
in tumor-selective innate sensing that leads to T cell-dependent tumor control. Further, we will elucidate how β-
lap overcomes adaptive resistance to anti-PD-L1 therapy. This research will provide novel evidence for new
combination therapy for NQO1+ solid tumors and broaden the clinical utility of immune checkpoint inhibitors.
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Targeting NQO1+ tumor to trigger innate and adaptive immunity
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批准号:10215446
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财政年份:2020
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