Mechanisms of Cytokine Induced Lower Urinary Track Pathology

细胞因子诱导下尿路病理学机制

• 批准号: 8445575
• 负责人: Michael M Ittmann
• 金额: $ 30.47万
• 依托单位: BAYLOR COLLEGE OF MEDICINE
• 依托单位国家: 美国
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-29 至 2014-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8445575
• 关键词: Mechanisms; Cytokine; Induced; Lower; Urinary

DESCRIPTION (provided by applicant): By the 8th decade of life approximately 80% of men have evidence of benign prostatic hyperplasia (BPH), which is characterized by markedly increased tissue mass in the transition zone (TZ) of the prostate. Lower urinary tract symptoms (LUTS) are characterized by primary symptoms in the urinary bladder. The close proximity of these two physiologically related organs has led us to explore the hypothesis that the development and progression of these conditions may be associated in a common pathological condition which we designate as BPH/LUTS. Cellular senescence is a process that limits the proliferation of human cells. Senescent cells accumulate in human tissues, including the prostate, with increasing age. These senescent cells have altered function, including increased expression of pro-inflammatory cytokines that can alter the function of adjacent cells. Our preliminary data strongly supports the concept that cellular senescence contributes significantly to BPH/LUTS. The goal of this proposal is to characterize the mechanisms by which cellular senescence can promote the development of benign prostatic hyperplasia and via paracrine effects and/or mechanical obstruction induce changes in the urinary bladder. Three Aims are proposed. In Aim 1 we will determine if senescence associated cytokines are upregulated in BPH epithelium and if their levels correlate with levels of other senescence markers and characterize the cytokines and growth factors upregulated in BPH epithelium and stroma adjacent to this epithelium (periacinar stroma). This Aim we will both test our hypothesis regarding the role of epithelial senescence in BPH and derive a comprehensive list of potentially important cytokines/growth factors in BPH/LUTS. In Aim 2 we will explore the utility of using several novel, highly tractable models developed by our group to examine the impact of specific cytokines on cell growth and cellular phenotype in the context of epithelial/stromal interactions. In Aim 3 we will take advantage of several prostate promoter-specific transgenic mouse models to examine the possible role of inflammatory cytokines from the prostate gland in inducing cellular alterations

描述（由申请人提供）：到生命的第8个十年中，大约80％的男性有良性前列腺增生（BPH）的证据，其特征是前列腺过渡区（TZ）的组织质量显着增加。较低的尿路症状（LUTS）的特征是膀胱中的主要症状。这两个与生理相关的器官的紧密接近使我们探索了这样的假设：这些条件的发展和进展可能与我们指定为BPH/LUTS的常见病理状况相关。细胞衰老是限制人类细胞增殖的过程。随着年龄的增长，包括前列腺在内的人体组织中积累了衰老细胞。这些衰老细胞的功能改变了功能，包括增加促炎细胞因子的表达，可以改变相邻细胞的功能。我们的初步数据强烈支持了这样一个概念，即细胞衰老对BPH/LUTS显着贡献。该提案的目的是表征细胞衰老可以促进良性前列腺增生的发展和通过旁分泌作用和/或机械阻塞引起膀胱变化的机制。提出了三个目标。在AIM 1中，我们将确定与衰老相关的细胞因子在BPH上皮中是否上调，以及它们的水平是否与其他衰老标记水平相关，并表征与该上皮细胞（Periacinar Storoma）相邻BPH上皮和基质中上调的细胞因子和生长因子。这个目标我们既要检验我们关于上皮衰老在BPH的作用的假设，又可以得出BPH/LUTS中潜在重要的细胞因子/生长因子的全面列表。在AIM 2中，我们将探讨使用我们小组开发的几种新型，高度易处理的模型来检查特定细胞因子对上皮/基质相互作用的影响的特定细胞因子对细胞生长和细胞表型的影响。在AIM 3中，我们将利用几种前列腺特异性的转基因小鼠模型来检查前列腺炎症细胞因子在诱导细胞改变中的可能作用