权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Novel role for protein kinase D in airway inflammation and antiviral immunity

蛋白激酶 D 在气道炎症和抗病毒免疫中的新作用

基本信息

批准号：
10359734
负责人：
Steve N Georas
金额：
$ 38.5万
依托单位：
UNIVERSITY OF ROCHESTER
依托单位国家：
美国
项目类别：
财政年份：
2020
资助国家：
美国
起止时间：
2020-03-13 至 2025-02-28
项目状态：
未结题

来源：
https://reporter.nih.gov/project-details/10359734
关键词：
Actins Attenuated CCR CXCL1 gene Cells Chemotactic Factors Complex Cytokine Gene Double-Stranded RNA Epithelial Epithelial Cells Equilibrium Functional disorder Gene Expression Genes Genetic Transcription Immune response Immune system Immunity In Vitro Infection Inflammation Influenza Influenza A virus Inhalation Innate Immune Response Interferons Knockout Mice Light Link Lung MAP3K7 gene Mediating Modeling Morbidity - disease rate Mus NF-kappa B Natural Immunity Neutrophil Infiltration Pattern recognition receptor Phosphorylation Protein Dephosphorylation Protein Isoforms Protein-Serine-Threonine Kinases Proteins Pulmonary Inflammation Role Signal Pathway Signal Transduction Small Interfering RNA TBK1 gene TLR3 gene Testing Tight Junctions Tretinoin Viral Virus Virus Diseases Virus Replication airway epithelium airway inflammation antagonist antiviral immunity base cell motility chemokine chemokine receptor cofilin conditional knockout cytokine helicase in vivo influenza infection influenza pneumonia inhibitor interstitial knock-down lung injury melanoma migration mortality neutrophil novel protein kinase D respiratory virus sensor transcription factor

项目摘要

Respiratory viruses are a major cause of morbidity and mortality worldwide. After infecting their target cells, viruses are sensed by different pattern recognition receptors (PRR’s) that initiate innate anti-viral immune responses. Viral double stranded RNA (dsRNA) is a potent stimulator of innate immunity and activates toll-like receptor 3 (TLR3) as well as the intracellular helicases RIG-I (retinoic acid-inducible gene I) and MDA5 (melanoma differentiation-associated protein 5). Double stranded RNA sensors are expressed by the airway epithelium, and couple to complex downstream signaling pathways that initiate the expression of interferons and cytokine genes, resulting in airway inflammation and induction of anti-viral immunity. This R01 application is based on our serendipitous discovery that the serine/threonine kinase protein kinase D (PKD) has a previously overlooked role in innate immune responses driven by the dsRNA polyI:C. There are three PKD isoforms (PKD1-3), but little is known about their expression or function in the lung. Using targeted siRNA knock-down and a new line of knock-out mice, we found that polyI:C-induced epithelial cytokine gene expression and neutrophil recruitment to the lung are both dependent on PKD3. This appears to involve a previously unreported role for PKD3 in polyI:C signaling in epithelial cells, as well as in chemokine receptor signal transduction in neutrophils. Excitingly, we also discovered that a potent and selective PKD antagonist protects mice from infection with influenza A virus (IAV). In this revised R01 application, we propose three Aims that will: explain exactly how PKD mediates dsRNA signal transduction in airway epithelial cells (Aim 1), use conditional deletion and other strategies to unravel a new neutrophil specific role for PKD3 in lung inflammation (Aim 2), and test the hypothesis that targeting PKD will attenuate lung inflammation after influenza infection in mice (Aim 3).

呼吸道病毒是全世界发病率和死亡率的主要原因。在感染目标后