Role of Sympathetic Activation and RANKL/IL6 in Breast Cancer Bone Metastasis

交感神经激活和 RANKL/IL6 在乳腺癌骨转移中的作用

基本信息

批准号：
8827168
负责人：
Florent Elefteriou
金额：
$ 32.37万
依托单位：
VANDERBILT UNIVERSITY
依托单位国家：
美国
项目类别：
财政年份：
2013
资助国家：
美国
起止时间：
2013-04-01 至 2015-08-01
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/8827168
关键词：
4T1 Address Adhesions Adjuvant Therapy Adrenergic Receptor Affect Biological Assay Biopsy Bone Marrow Cells Bone Resorption Bone neoplasms Breast Cancer Cell Breast Cancer Early Detection Breast Cancer Patient Breast Cancer cell line Breast Carcinoma Breast cancer metastasis Catecholamines Cell Lineage Cells Cessation of life Chronic Chronic stress Clinical Data Depressed mood Detection Disseminated Malignant Neoplasm Distal Distant Event Genetic Goals Health Homeostasis IL6 gene In Vitro Injection of therapeutic agent Laboratories Link Malignant Neoplasms Mammary Neoplasms Mediating Mental Depression Metastatic Neoplasm to the Bone Modeling Molecular Mus Neoplasm Metastasis Neurons Nude Mice Organ Osteoblasts Osteolysis Pain Patients Pharmaceutical Preparations Population Pre-Clinical Model Propranolol Prostate carcinoma Psychosocial Stress Receptor Signaling Recurrence Reporting Research Role Series Signal Transduction Site Solid Specificity Stromal Cells Survival Rate Sympathetic Nervous System TNFSF11 gene Testing Time Transgenes Tumor Burden Woman Work base bone cancer cell cell motility chronic depression clinically relevant cytokine improved in vitro Assay in vivo interest knock-down malignant breast neoplasm mouse model osteoclastogenesis pre-clinical prevent programs protective effect psychosocial receptor receptor expression response restraint stress tumor

项目摘要

DESCRIPTION (provided by applicant): Early detection of breast cancer and new treatments have now put the 5 year survival rate of patients above 99% and virtually all breast cancer deaths are the result of distal metastases, thus preventing metastasis and recurrence is of great clinical importance. The overall goal of this work is to address whether sympathetic nervous system (SNS) activation induced by chronic stress or depression in breast cancer patients contributes to bone metastasis, recurrence and survival. Clinical evidence and experimental data accumulated in our laboratory, using two mouse models of cancer metastasis to bone, support this hypothesis. Our data also point to osteoblast-derived cytokines RANKL and IL6 as a crucial factor promoting the colonization of cancer cells in the bone microenvironment in response to SNS activation, in addition to their effect on osteoclastogenesis and osteolysis. We propose in this application to characterize the cellular and molecular mechanisms underlying these SNS effects (Aim 1 and 2) and to address whether ß-blockers and RANKL blockade have beneficial effects on bone metastasis and survival in preclinical mouse models characterized by endogenous sympathetic activation (Aim 3).

描述（申请人提供）：乳腺癌的早期发现和新的治疗方法现已使患者的5年生存率达到99%以上，几乎所有乳腺癌死亡都是远端转移的结果，因此防止转移和复发具有重要的临床意义这项工作的总体目标是利用我们实验室积累的两个临床证据和实验数据来解决乳腺癌患者慢性压力或抑郁引起的交感神经系统（SNS）激活是否有助于骨转移、复发和生存。癌症骨转移的小鼠模型，我们的数据还表明，成骨细胞衍生的细胞因子 RANKL 和 IL6 是响应 SNS 激活而促进癌细胞在骨微环境中定植的关键因素。我们在本申请中建议描述这些 SNS 效应背后的细胞和分子机制（目标 1 和 2），并探讨 ß-阻滞剂和 RANKL 阻滞剂是否对骨有有益作用。以内源性交感神经激活为特征的临床前小鼠模型中的转移和存活（目标 3）。