Therapeutic Targeting of Macrophage PI3Kgamma in HNSCC
HNSCC 中巨噬细胞 PI3Kgamma 的治疗靶向
基本信息
- 批准号:9899741
- 负责人:
- 金额:$ 47.18万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2018
- 资助国家:美国
- 起止时间:2018-04-17 至 2023-03-31
- 项目状态:已结题
- 来源:
- 关键词:AftercareBiopsyBiopsy SpecimenBlood specimenCD8-Positive T-LymphocytesCancer EtiologyCarcinogensCellsClinicalCountryDataDendritic CellsDeveloping CountriesDiseaseExcisionFutureGene ExpressionGene Expression ProfileGene Expression ProfilingGeneticGoalsHead and Neck Squamous Cell CarcinomaHuman PapillomavirusImmuneImmune checkpoint inhibitorImmune responseImmunologic MarkersImmunooncologyImmunosuppressionImmunotherapeutic agentImmunotherapyIncidenceInflammationInflammatoryInterleukin-10Interleukin-12InvestigationMalignant NeoplasmsMediatingMemoryMetastatic/RecurrentModelingMolecularMonitorMyeloid CellsNatureNivolumabOperative Surgical ProceduresPIK3CG genePatient-Focused OutcomesPatientsPharmacologyPhenotypePopulationProtein IsoformsRecurrent diseaseResectableResistanceRoleSignal TransductionSignaling ProteinT cell therapyT memory cellT-LymphocyteTestingThe Cancer Genome AtlasTherapeuticTobaccoTransforming Growth Factor betaTumor-associated macrophagesUnited Statesadvanced diseaseanti-PD-1anti-tumor immune responsearginasecytotoxiceffector T cellimmune resistanceimprovedimproved outcomein vivoinhibitor/antagonistmacrophagemortalitymouse modelnovelnovel therapeuticsoral HPV-positive head and neck cancersoutcome forecastpredicting responsepredictive markerrecruitresponse biomarkertherapeutic targettooltreatment responsetumortumor microenvironment
项目摘要
ABSTRACT
There is a critical need to develop novel therapies for head and neck squamous cell carcinoma (HNSCC). The
incidence of HPV-related HNSCC is rapidly rising in the United States and other countries around the world,
while tobacco-related HNSCC remains an aggressive disease with poor prognosis and limited therapeutic
options. Worldwide, HNSCC accounts for over 600,000 cases annually and is a leading cause of cancer
mortality in developing countries. A majority of HNSCC patients present initially with locally or locoregionally
advanced disease, yet these patients largely succumb to locally recurrent disease. Gene expression profiling
and modeling strongly support a critical role for inflammation in HNSCC initiation and progression. Immune
therapy holds promise for the treatment of HNSCC, as the immunotherapeutic agent nivolumab (anti-PD-1)
recently demonstrated clinical activity in a small percentage of patients with recurrent/metastatic HNSCC.
However, these findings suggest that HNSCC patients would be excellent candidates for novel immune
therapeutics that could target resistance to anti-PD-1. We have found that PI3Kγ in immune suppressive
Tumor Associated Macrophages (TAMs) promotes tumor immune suppression and resistance to checkpoint
inhibitors in mouse models of HNSCC. Genetic or pharmacological inactivation of PI3Kγ, but not of other PI3K
isoforms, repolarized TAMs toward a pro-inflammatory, anti-tumor phenotype and synergized with checkpoint
inhibitors to activate memory T cells and eradicate HNSCC tumors. Our studies indicate that PI3Kγ inhibitors,
such as the investigational agent IPI-549, may be valuable immune oncologic agents to treat and monitor
HNSCC patient outcomes. Our studies also identified a novel PI3Kγ-driven signature of immune suppression -
that predicts decreased survival in HNSCC patients. We propose to test the hypothesis that this PI3Kγ-
mediated signature of immune suppression can be used to monitor therapeutic responses to PI3Kγ inhibitors.
We will also test the hypothesis that therapeutic strategies that block PI3Kγ-mediated immune suppression will
synergize with T cell targeted therapeutics to improve outcomes in HNSCC patients. The specific aims of this
proposal are 1) To Identify the mechanisms by which PI3Kγ inhibitors synergize with anti-PD-1 to promote T
cell recruitment and activation in vivo, using mouse models of HPV+ and HPV- carcinogen-induced HNSCC, 2)
To determine the effect of the PI3Kγ inhibitor IPI-549 on tumor immune responses in patients with resectable
HNSCC, 3) To evaluate biomarkers of immune response in recurrent/metastatic HNSCC patients treated with
IPI-549 in combination with anti-PD-1.
抽象的
迫切需要开发针对头颈鳞状细胞癌(HNSCC)的新型疗法。这
与HPV相关的HNSCC的发病率在美国和世界其他国家迅速上升
而与烟草相关的HNSCC仍然是一种侵略性疾病,预后不良且治疗性有限
选项。 HNSCC在全球范围内每年占600,000多个病例,是癌症的主要原因
发展中国家的死亡率。大多数HNSCC患者最初出现在本地或局部。
晚期疾病,但这些患者在很大程度上屈服于局部复发性疾病。基因表达分析
建模强烈支持HNSCC计划和进展中炎症的关键作用。免疫
治疗有望治疗HNSCC,作为免疫治疗剂Nivolumab(抗PD-1)
最近在一小部分复发/转移性HNSCC患者中表现出临床活性。
但是,这些发现表明HNSCC患者将是新型免疫的极好候选者
可以靶向抗PD-1的治疗。我们发现免疫抑制中的PI3Kγ
肿瘤相关的巨噬细胞(TAM)促进了肿瘤免疫抑制和对检查点的抵抗力
HNSCC小鼠模型中的抑制剂。 PI3Kγ的遗传或药理灭活,但没有其他PI3K
同工型,转化为促炎性,抗肿瘤表型的TAM,并与检查点协同作用
激活记忆T细胞并放射性HNSCC肿瘤的抑制剂。我们的研究表明PI3Kγ抑制剂,
例如研究剂IPI-549,可能是有价值的免疫肿瘤剂来治疗和监测
HNSCC患者的结果。我们的研究还确定了一种新型的PI3Kγ驱动的免疫抑制 -
该预测降低了HNSCC患者的生存率。我们提出了这一假设,即该PI3Kγ-
免疫抑制的介导特征可用于监测对PI3Kγ抑制剂的治疗反应。
我们还将检验以下假设:阻止PI3Kγ介导的免疫抑制的治疗策略将
与T细胞靶向疗法协同作用,以改善HNSCC患者的预后。这个特定的目的
提案是1)确定PI3Kγ抑制剂与抗PD-1协同促进T的机制
使用HPV+和HPV-致癌物诱导的HNSCC的小鼠模型在体内募集和激活,2)
确定PI3Kγ抑制剂IPI-549对可切除的患者肿瘤免疫反应的影响
HNSCC,3)评估复发/转移性HNSCC患者中免疫反应的生物标志物
IPI-549与抗PD-1结合使用。
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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Ezra Cohen其他文献
Ezra Cohen的其他文献
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{{ truncateString('Ezra Cohen', 18)}}的其他基金
Co-targeting the HER3 oncogenic signaling circuitry and PD-1 as a novel multimodal precision immunotherapy for HNSCC
联合靶向 HER3 致癌信号通路和 PD-1 作为 HNSCC 的新型多模式精准免疫疗法
- 批准号:
10061585 - 财政年份:2019
- 资助金额:
$ 47.18万 - 项目类别:
Co-targeting the HER3 oncogenic signaling circuitry and PD-1 as a novel multimodal precision immunotherapy for HNSCC
联合靶向 HER3 致癌信号通路和 PD-1 作为 HNSCC 的新型多模式精准免疫疗法
- 批准号:
10304190 - 财政年份:2019
- 资助金额:
$ 47.18万 - 项目类别:
Co-targeting the HER3 oncogenic signaling circuitry and PD-1 as a novel multimodal precision immunotherapy for HNSCC
联合靶向 HER3 致癌信号通路和 PD-1 作为 HNSCC 的新型多模式精准免疫疗法
- 批准号:
9917561 - 财政年份:2019
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9363695 - 财政年份:2017
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A Rational Systematic Approach to Find Combinations of Pharmacologic and Immune Therapies that Target Identifiable Oncogenic States
寻找针对可识别致癌状态的药物和免疫疗法组合的合理系统方法
- 批准号:
10004824 - 财政年份:2017
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A Rational Systematic Approach to Find Combinations of Pharmacologic and Immune Therapies that Target Identifiable Oncogenic States
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10226232 - 财政年份:2017
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