PAIN RECEPTOR MEDI ANTI-INFLAMMATORY ACTIV. OF ECHINACEA, HYPERICUM SPECIES/WURTE

疼痛受体药物抗炎活性。

• 批准号: 7293902
• 负责人: DIANE F BIRTH
• 金额: $ 50.7万
• 依托单位: IOWA STATE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-04-01 至 2010-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7293902
• 关键词: Acids; Address; Affect; Agonist; Amino Acids; Andro-Diane; Anti-Inflammatory Agents; Anti-inflammatory; Biochemical; Biological Assay; Botanicals; Cannabinoids; Capsaicin; Cell model; Cells; Chemicals; Chili Pepper; Class; Complement; Complex; Data; Dinoprostone; Echinacea (Asteraceae); Echinacea Preparation; Engineering; Evaluation; Family; Fractionation; Genetic; Goals; Human; Hypericum; Individual; Inflammation; Inflammatory Response; Ion Channel; Ions; Ligands; Mediating; Modeling; Monitor; Neuraxis; Nociceptors; Oocytes; PTGS2 gene; Pain; Pathway interactions; Peripheral; Plant Extracts; Plants; Process; Proteins; Rana; Range; Reaction; Research; Research Personnel; Role; Screening procedure; Sensory; Signal Transduction; Stimulus; System; TRPV1 gene; Testing; Thinking; Vanilloid; Water; base; cytokine; improved; inflammatory pain; insight; member; mutant; novel; pain receptor; receptor; research study; response; transcriptomics; transmission process

TRP (transient receptor potential), CB (cannabinoid) and ASCI (acid-sensing) channels are thought to act together to sense, transmit, and integrate the pain response and the associated inflammatory responses. TRPV1, in particular, interacts with a multiple endogenous and exogenous molecules and stimuli, and is considered a key component in the integration of inflammatory pain. Project 3 will investigate relationships between bioactive Echinacea and Hypericum constituents and TRPV1 and other channels. It will test the hypotheses that Echinacea and Hypericum contain constituents with bioactivity against a range of TRPV1- related receptors, and that biochemical constituents of Echinacea induce pain-receptor responses by mechanisms distinct from those of capsaicin, a TRPV1 agonist. For the proposed studies, ion channel bioactivity will be assayed using transient-expression two models: 1) a frog oocyte system for initial screenings of multiple plant fractions, and 2) a human HEK293t cell model for more detailed evaluation of the role of the plant constituents in integration of inflammatory pain. Specific Aim 1: Evaluate the breadth of bioactivity of Echinacea and Hypericum on TRP, CB, and ASCI channels. These experiments will reveal whether these extracts activate channels other than TRPV1, and whether each activity is invoked by a distinct complement of botanical constituents. Specific Aim 2: Identify constituent(s) of Echinacea and Hypericum that evoke TRPV1-channel responses using bioactivity-guided fractionation. Extracts will be iteratively fractionated, tested for TRPV1 activation, and analytically evaluated for chemical composition. Our goal is to identify particular compounds and classes of plant compounds that induce TRPV1 bioactivity. Specific Aim 3: Identify mechanisms of TRPV1 bioactivity via Echinacea constituents. Inflammation and pain are complexly interrelated. In this aim, we seek to characterize how Echinacea extracts and constituents interact with other agonists and antagonists. Furthermore, transcriptomic analyses, in parallel with assays of anti- and pro- inflammatory responses, will reveal genetic and signaling networks affected by Echinacea constituents in a TVPR1-dependent manner. Taken together, these studies will address the cellular mechanisms by which these botanicals might influence TRPV1/-mediated integration of pain and inflammatory responses.

TRP（瞬时受体电位）、CB（大麻素）和ASCI（酸敏感）通道被认为发挥作用 共同感知、传递和整合疼痛反应和相关的炎症反应。 TRPV 1，特别是，与多种内源性和外源性分子和刺激相互作用， 被认为是炎症疼痛整合的关键组成部分。项目3将调查关系 紫锥菊和金丝桃属活性成分与TRPV 1等通道之间的相互作用。它将考验 紫锥花属和金丝桃属植物含有对一系列TRPV 1- 相关受体，以及紫锥菊的生化成分通过以下方式诱导疼痛受体反应： 与TRPV 1激动剂辣椒素不同的机制。对于拟议的研究，离子通道 将使用瞬时表达两种模型测定生物活性：1）用于初始表达的青蛙卵母细胞系统， 筛选多个植物组分，和2）人HEK 293 t细胞模型，用于更详细的评估 植物成分在炎症性疼痛整合中的作用。具体目标1：评估广度 松果菊和金丝桃对TRP、CB和ASCI通道的生物活性。这些实验将揭示 这些提取物是否激活TRPV 1以外的通道，以及每个活动是否由 植物成分的独特补充。具体目标2：确定紫锥菊的成分， 金丝桃属植物，使用生物活性指导的分级引起TRPV 1通道反应。浸提液 反复分级，测试TRPV 1活化，并分析评价化学组成。 我们的目标是鉴定诱导TRPV 1生物活性的特定化合物和植物化合物类别。 具体目标3：通过紫锥菊成分鉴定TRPV 1生物活性的机制。炎症和 疼痛是复杂相关的。为此，我们寻求表征紫锥菊提取和 成分与其它激动剂和拮抗剂相互作用。此外，转录组学分析，在平行 通过对抗炎和促炎反应的分析，将揭示受 紫锥菊成分在TVPR 1依赖的方式。总之，这些研究将解决 这些植物可能影响TRPV 1/-介导的疼痛整合的细胞机制， 炎症反应。