CSF1 Receptor-Mediated Tumor Microenvironment in Lung Cancer

CSF1 受体介导的肺癌肿瘤微环境

• 批准号: 10553138
• 负责人: Gye Young Park
• 金额: --
• 依托单位: JESSE BROWN VA MEDICAL CENTER
• 依托单位国家: 美国
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-01-01 至 2024-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10553138
• 关键词: Adopted; Anabolism; Attenuated; Basic Science; Binding; Biochemical; Biopsy; Body Fluids; CSF1R gene; Cancer Biology; Cancer Etiology; Cancer Model; Cell Lineage; Cell Proliferation; Cell secretion; Cells; Cellular biology; Cessation of life; Chemotaxis; Clinical; Clinical Trials; Colony-Stimulating Factors; Cytometry; Data; Dendritic Cells; Development; Encapsulated; Genes; Human; Immune; Immune system; Immunologics; Immunologist; Infiltration; Inhalation; Knockout Mice; Lung; Lung Adenocarcinoma; Lysophospholipase; Macrophage; Macrophage Colony-Stimulating Factor; Macrophage Colony-Stimulating Factor Receptor; Malignant Neoplasms; Malignant neoplasm of lung; Measures; Mediating; Mediator; Mouse Strains; Mus; Mutation; Myelogenous; Myeloid Cells; Nanodelivery; Oncologist; Outcome; Pathway interactions; Patient Recruitments; Patients; Phenotype; Phospholipids; Play; Population; Progression-Free Survivals; Prospective Studies; Receptor Activation; Receptor Cell; Receptor Inhibition; Reporting; Research; Research Personnel; Role; Sampling; Stimulus; System; Tamoxifen; Techniques; Testing; Therapeutic; Therapeutic Effect; Therapeutic Intervention; Tissues; Transgenic Mice; Tumor Biology; Tumor Cell Biology; Tumor-infiltrating immune cells; anti-cancer; arm; cancer immunotherapy; cancer therapy; chemokine; clinical material; conditional knockout; cytokine; exoenzyme; extracellular; genetic analysis; immune function; immunogenic; inhibitor; innovation; lysophosphatidic acid; migration; mortality; mouse model; neoplastic cell; novel; novel strategies; novel therapeutic intervention; paracrine; receptor; targeted agent; transcriptome sequencing; tumor; tumor growth; tumor microenvironment; tumor progression; tumor-immune system interactions; ultrasound

Thanks to the collaborative efforts of immunologists and oncologists, cancer immunotherapy and its immunologic research made clinical and scientific breakthrough in treatment of lung cancer. Here, we assembled an outstanding team of researchers including immunologist, clinical oncologists, and cancer biologist to investigate the role of tumor-infiltrating myeloid cells such as macrophages and dendritic cells (DCs), and seek a new approach for myeloid cell- mediated cancer immunotherapy. Microenvironmental milieu determines the phenotype of myeloid cells. Our lab reported that Colony Stimulating Factor 1 (CSF1), one of key mediators of microenvironment, is critical for determining the immunologic function of a DC subset. It has been well known that tumor cells secrete CSF1 to alter their microenvironment and yet, the mechanism of action is not fully elucidated. Several agents targeting CSF1 receptor (CSF1R) are being tested for cancer treatment in ongoing clinical trials. We propose a new role of tumor- produced CSF1 in altering tumor immune microenvironment toward tumor progression by producing autotaxin (ATX) which increases the number of protumoral myeloid cells such as macrophages and DCs. ATX, also known as lysophospholipase D, is secreted extracellularly and enzymatically generates lysophosphatidic acid (LPA) which is the most abundant phospholipid in body fluid. LPA is well known to stimulate cellular proliferation, migration and survival for myeloid lineage cells. The proposal is based on the PI’s two new critical discoveries on myeloid cell biology; (1) ATX is highly expressed in myeloid cells under the control of CSF1 and its receptor (CSF1R) activation, (2) ATX regulates the size of the residential population of lung myeloid cells in the CSF1R-dependent manner (CSF1R-ATX pathway). Together these findings have led to the hypothesis that tumor-produced CSF1 stimulates protumoral myeloid cells to secrete ATX in order to increase the number of protumoral macrophages and DCs. To validate the hypothesis, we propose three specific aims. The basic science arm will employ the approaches for proof-of- concept by utilizing the novel transgenic mice that have the loss or excess of the target genes. The clinical arm will exploit clinical samples from patients with lung cancer to verify the proof-of- concept. Lastly, in the translational arm, we will examine the therapeutic potentials of interfering CSF1R-ATX pathway in the mouse model of lung cancer by adopting state-of-art nano-delivery system. By using novel transgenic mice specific to CSF1R-ATX pathway, the clinical materials from patients and innovative approaches, we will interrogate the CSF1R-ATX pathway in tumor- infiltrating myeloid cells, which play a key role in tumor cell biology and could lead to the development of a new therapeutic strategy for lung cancer.

得益于免疫学家和肿瘤学家的合作恩典，癌症免疫疗法 它的免疫学研究使肺部治疗方面的临床和科学突破 癌症。 临床肿瘤学家和癌症生物学家肿瘤渗透肌细胞的作用 例如巨噬细胞和树突状细胞（DCS），并寻求一种新方法 介导的癌症免疫疗法。 髓样细胞。我们的实验室报道了刺激因子1（CSF1） 微环境对于确定直流子集的免疫学功能至关重要。 众所周知，肿瘤细胞分泌CSF1改变其微环境，迄今为止 作用机制未完全阐明。 正在进行的临床试验中测试了癌症治疗。 通过 产生自型蛋白（ATX），从而增加了髓样细胞的数量，例如 巨噬细胞和DC。 酶促产生溶物磷脂酸（LPA），这是最丰富的 LPA中的磷脂众所周知 髓样谱系细胞的生存。 该提案基于PI对髓样细胞生物学的两个新发现 在CSF1及其受体（CSF1R）的控制下，在髓样细胞中高度表达 激活，（2）ATX调节肺髓样细胞的居民种群的大小 CSF1R依赖性方式（CSF1R-ATX途径）。 假设肿瘤产生的CSF1刺激原肌髓样细胞分泌ATX 为了增加原始巨噬细胞和DC的数量。 我们提出了三个特定的目标。 通过利用具有靶基因损失或过量的新型转基因小鼠的概念。 临床部门将利用肺癌患者的临床样本来验证证明 概念。 通过采用最先进的纳米交通，CSF1R-ATX途径在肺癌的鼠标中 系统。 通过使用针对CSF1R-ATX途径的新型转基因小鼠，来自 患者和创新方法，我们将询问肿瘤中的CSF1R-ATX途径 渗透髓样细胞，在肿瘤细胞生物学中起关键作用，可能导致 制定肺癌的新治疗策略。