Roles of resident macrophages in salivary gland development, homeostasis, regeneration, and function restoration after radiotherapy

项目摘要 唾液分泌的长期减少，也称为口干，在患者中很常见。 接受放射治疗的头颈癌患者。这种副作用显著地损害了 影响患者的生活质量，难以补救。申请人最近的工作 发现唾液腺中丰富的巨噬细胞受到 接受放射治疗，恢复唾液分泌需要他们的康复。这样做的目的是 建议是确定局部巨噬细胞在发育中的作用， 唾液腺的维持和再生，以及这些细胞对辐射的反应 恢复因辐射而受损的唾液功能。为了实现这些目标，这个项目 将在上述条件下追踪局部巨噬细胞的来源，确定 移除这些细胞对唾液功能的影响，并找出哪些分子 负责辐射对这些细胞的破坏和唾液的恢复 因辐射而受损的功能。该项目的完成将揭示地方政府的重要作用 巨噬细胞及其产物在维持唾液分泌，并形成基础 开发新的和可行的方法来治疗由 放射治疗。

Project Summary The long lasting decrease of saliva secretion, also called dry mouth, is common in patients treated with radiotherapy for head and neck cancer. This side effect significantly impairs the quality of life of affected patients and is difficult to remedy. The applicant’s recent work revealed that macrophages abundant in salivary glands are sharply damaged by radiotherapy, and their recovery is required for restoring saliva secretion. The goals of this proposal are to determine the roles of local macrophages in the development, maintenance and regeneration of salivary glands, and how these cells respond to radiation and restore salivary function damaged by radiation. To achieve these goals, this project will trace the origin of local macrophages under conditions mentioned above, determine effects of removing these cells on salivary function, and pinpoint which molecules are responsible for the damage of these cells by radiation and for the recovery of salivary function damaged by radiation. Completion of this project will reveal vital roles of local macrophages and their products in the maintenance of saliva secretion, and form a basis for developing novel and feasible approaches to treating dry mouth caused by radiotherapy.