Cancer-associated fibroblasts and extracellular matrix remodeling in pediatric neuroblastoma

小儿神经母细胞瘤中癌症相关成纤维细胞和细胞外基质重塑

• 批准号: 10538037
• 负责人: Nicolas Peterson
• 金额: $ 4.28万
• 依托单位: ST. JUDE CHILDREN'S RESEARCH HOSPITAL GRADUATE SCHOOL OF BIOMEDICAL SCIENCES, LLC
• 依托单位国家: 美国
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10538037
• 关键词: ADAMTS; ADAMTS1 gene; Adrenal Glands; Adrenal Neuroblastoma; Adult; Affect; Attention; Automobile Driving; CD4 Positive T Lymphocytes; Cancer Biology; Cells; Cessation of life; Chemicals; Child; Childhood; Childhood Solid Neoplasm; Chromium; Coculture Techniques; Collagen; Confocal Microscopy; Cytokine Gene; Data; Deposition; Development; Disease; Enterobacteria phage P1 Cre recombinase; Enzymes; Etiology; Evolution; Extracellular Matrix; Fibroblasts; Flow Cytometry; Gene Deletion; Gene Expression; Gene Expression Profile; Gene Expression Profiling; Genes; Genetic Transcription; Heterogeneity; Immune; Immune signaling; Immune system; Immunocompetent; Immunofluorescence Immunologic; Immunofluorescence Microscopy; Immunologics; Incidence; Infiltration; Inflammation; Investigation; Laboratories; Laboratory Study; Laminin; Location; MYCN gene; Malignant Childhood Neoplasm; Malignant Neoplasms; Maps; Mediating; Modeling; Molecular; Monitor; Mus; Myeloid Cells; Neoplasm Metastasis; Neuroblastoma; Neuroendocrine Cell; Patients; Phenotype; Process; Progressive Disease; Proteins; Proteoglycan; Proteolysis; Rag1 Mouse; Resected; Role; Signal Transduction; Site; Smooth Muscle Actin Staining Method; Solid; Solid Neoplasm; Statistical Data Interpretation; Stromal Cells; Survival Rate; T-Lymphocyte; Testing; Tissue-Specific Gene Expression; Tumor Volume; WT1 gene; angiogenesis; anti-tumor immune response; base; cancer cell; cell type; chemokine; crosslink; cytokine; experimental study; high risk; improved; in vivo; insight; lymphocyte trafficking; macrophage; patient subsets; premalignant; prevent; recruit; single cell analysis; transcriptomics; tumor; tumor growth; tumor microenvironment; tumor progression; tumor-immune system interactions; tumorigenesis; tumorigenic; versican

PROJECT SUMMARY Extracellular matrix (ECM) remodeling is a critical process within the solid tumor microenvironment. Cancer- associated fibroblasts (CAFs) are the primary producers of matrix proteins and remodeling enzymes that cross- link and degrade matrix proteins. CAFs are enigmatic in that they can promote or impede tumor growth, suggesting heterogeneity that is not completely understood. How CAF heterogeneity evolves over tumor progression and how this evolution impacts ECM remodeling within solid tumors remain an outstanding question in cancer biology. Recent studies have focused on CAF function in models of adult cancer, but little attention has been directed toward understanding CAF heterogeneity and ECM remodeling in childhood cancers, which are etiologically different diseases. Neuroblastoma (NB) is a childhood cancer of neuroendocrine cells that accounts for 15% of pediatric cancer deaths. The 5-year overall survival rate for high-risk NB remains at 50%, highlighting the need for a deeper understanding of the molecular and immunological mechanisms driving tumorigenesis in this subset of patients. Like other solid tumors, the NB tumor microenvironment includes malignant cells, CAFs, and immune cells. Our laboratory studies NB using a penetrant, spontaneous model of high-risk NB (TH-MYCN, AlkF1178L/+) in immunocompetent mice, allowing in vivo investigation of the tumor immune microenvironment from tumorigenesis to progressive disease. Using this model, we previously demonstrated the pro-tumorigenic role of macrophages and CD4+ T cells by showing that their depletion significantly reduced the formation of tumors and extended survival. My preliminary experiments utilizing 10X Chromium gene expression analysis of stromal cells from nascent and mature tumors identified two distinct subsets of CAFs characterized by alpha smooth muscle actin (Acta2) and Wilms tumor 1 (Wt1) expression. Interestingly, only Wt1 CAFs expressed chemokines and cytokines involved in recruitment of myeloid and T cells. Wt1 CAFs were enriched in the early tumor microenvironment and expressed genes encoding ADAMTS enzymes involved in degradation of the proteoglycan versican. Our preliminary findings indicate that Wt1 CAFs may be a crucial early recruiter of pro-tumorigenic immune cells in our model of neuroblastoma. The studies proposed will assess how CAF heterogeneity affects ECM remodeling over neuroblastoma progression, examine tumor-CAF and CAF-immune signaling, and test the effect of perturbing ECM deposition and degradation on tumor formation and progression. Together, these studies will generate new and exciting information about the tumor microenvironment and potential vulnerabilities to exploit in pediatric solid tumors.

项目概要 细胞外基质（ECM）重塑是实体瘤微环境中的一个关键过程。癌症- 相关成纤维细胞（CAF）是基质蛋白和重塑酶的主要生产者， 连接并降解基质蛋白。 CAF 很神秘，因为它们可以促进或阻碍肿瘤生长， 表明尚未完全理解的异质性。 CAF 异质性如何随肿瘤演变 进展以及这种进化如何影响实体瘤内的 ECM 重塑仍然是一个悬而未决的问题 在癌症生物学中。最近的研究集中在成人癌症模型中的 CAF 功能，但很少受到关注 旨在了解儿童癌症中的 CAF 异质性和 ECM 重塑， 是病因不同的疾病。 神经母细胞瘤 (NB) 是一种神经内分泌细胞的儿童癌症，占儿童癌症的 15% 死亡人数。高危 NB 的 5 年总体生存率仍保持在 50%，凸显需要更深入的研究 了解驱动这部分患者肿瘤发生的分子和免疫机制。 与其他实体瘤一样，NB肿瘤微环境包括恶性细胞、CAF和免疫细胞。我们的 使用高风险 NB 的渗透性自发模型（TH-MYCN、AlkF1178L/+）进行 NB 实验室研究 免疫活性小鼠，允许体内研究肿瘤免疫微环境 肿瘤发生到进行性疾病。使用该模型，我们之前证明了促肿瘤作用 巨噬细胞和 CD4+ T 细胞的消耗显着减少了肿瘤的形成 延长生存期。 我的初步实验利用 10X Chromium 基因表达分析来自新生和 成熟肿瘤鉴定出两个不同的 CAF 子集，其特征是 α 平滑肌肌动蛋白 (Acta2) 和 肾母细胞瘤 1 (Wt1) 表达。有趣的是，只有 Wt1 CAF 表达参与以下过程的趋化因子和细胞因子： 骨髓细胞和 T 细胞的募集。 Wt1 CAF 在早期肿瘤微环境中富集并表达 编码参与蛋白聚糖多功能蛋白聚糖降解的 ADAMTS 酶的基因。我们的初步 研究结果表明，在我们的模型中，Wt1 CAF 可能是促肿瘤免疫细胞的重要早期招募者。 成神经细胞瘤。拟议的研究将评估 CAF 异质性如何影响 ECM 重塑 神经母细胞瘤进展，检查肿瘤-CAF 和 CAF-免疫信号传导，并测试扰动的效果 ECM 沉积和降解对肿瘤形成和进展的影响。这些研究共同将产生新的 以及有关肿瘤微环境和儿科潜在脆弱性的令人兴奋的信息 实体瘤。