Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi, China.
Department of Anesthesiology, Mayo Clinic, Rochester, MN, USA.
Expert Rev Respir Med. 2023 Jul-Dec;17(10):903-917. doi: 10.1080/17476348.2023.2276732. Epub 2023 Nov 24.
INTRODUCTION: Asthma is a chronic lung disease influenced by environmental and inflammatory triggers and involving complex signaling pathways across resident airway cells such as epithelium, airway smooth muscle, fibroblasts, and immune cells. While our understanding of asthma pathophysiology is continually progressing, there is a growing realization that cellular microdomains play critical roles in mediating signaling relevant to asthma in the context of contractility and remodeling. Mechanosensitive pathways are increasingly recognized as important to microdomain signaling, with Piezo and transient receptor protein (TRP) channels at the plasma membrane considered important for converting mechanical stimuli into cellular behavior. Given their ion channel properties, particularly Ca conduction, a question becomes whether and how mechanosensitive channels contribute to Ca microdomains in airway cells relevant to asthma. AREAS COVERED: Mechanosensitive TRP and Piezo channels regulate key Ca regulatory proteins such as store operated calcium entry (SOCE) involving STIM and Orai channels, and sarcoendoplasmic (SR) mechanisms such as IP receptor channels (IPRs), and SR Ca ATPase (SERCA) that are important in asthma pathophysiology including airway hyperreactivity and remodeling. EXPERT OPINION: Physical and/or functional interactions between Ca regulatory proteins and mechanosensitive channels such as TRP and Piezo can toward understanding asthma pathophysiology and identifying novel therapeutic approaches.
简介:哮喘是一种慢性肺部疾病,受环境和炎症触发因素的影响,并涉及到气道细胞(如上皮细胞、气道平滑肌、成纤维细胞和免疫细胞)中的复杂信号通路。尽管我们对哮喘病理生理学的理解在不断进步,但人们越来越认识到细胞微域在介导与哮喘相关的信号转导方面发挥着关键作用,特别是在收缩性和重塑方面。机械敏感途径越来越被认为对微域信号转导很重要,质膜上的 Piezo 和瞬时受体蛋白 (TRP) 通道被认为对于将机械刺激转化为细胞行为很重要。鉴于它们的离子通道特性,特别是钙传导,一个问题是机械敏感通道是否以及如何为与哮喘相关的气道细胞中的钙微域做出贡献。
涵盖领域:机械敏感的 TRP 和 Piezo 通道调节关键的钙调节蛋白,如涉及 STIM 和 Orai 通道的储存操作钙内流 (SOCE),以及肌浆网 (SR) 机制,如 IP 受体通道 (IPRs) 和 SR Ca ATPase (SERCA),这些在哮喘病理生理学中很重要,包括气道高反应性和重塑。
专家意见:钙调节蛋白和机械敏感通道(如 TRP 和 Piezo)之间的物理和/或功能相互作用有助于理解哮喘病理生理学,并确定新的治疗方法。
Expert Rev Respir Med. 2023
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