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Distinguished Scientist Seminar Series featuring Ben Afzali, MD, PhD & Claudia Kemper, PhD

Distinguished Scientist Seminar Series   Ben Afzali, MD, PhD Earl Stadtman Investigator Chief, Immunoregulation Section Kidney Diseases Branch, NIDDK, NIH & Claudia Kemper, PhD Senior Investigator, Immunology Center Chief, Complement and Inflammation Research Section DIR, NHLBI, NIH Titles & Abstracts: “Unravelling complex biology using high throughput sequencing” The Immunoregulation Section studies the basic molecular mechanisms […] ....

Ben Afzali , Claudia Kemper , Inflammation Research Section , Kidney Diseases Branch , Immunology Center , Distinguished Scientist Seminar , Diseases Branch , Inflammation Research , Immunoregulation Section ,

SARS-CoV-2 drives JAK1/2-dependent local complement hyperactivation


Abstract
Patients with coronavirus disease 2019 (COVID-19) present a wide range of acute clinical manifestations affecting the lungs, liver, kidneys and gut. Angiotensin converting enzyme (ACE) 2, the best-characterized entry receptor for the disease-causing virus SARS-CoV-2, is highly expressed in the aforementioned tissues. However, the pathways that underlie the disease are still poorly understood. Here, we unexpectedly found that the complement system was one of the intracellular pathways most highly induced by SARS-CoV-2 infection in lung epithelial cells. Infection of respiratory epithelial cells with SARS-CoV-2 generated activated complement component C3a and could be blocked by a cell-permeable inhibitor of complement factor B (CFBi), indicating the presence of an inducible cell-intrinsic C3 convertase in respiratory epithelial cells. Within cells of the bronchoalveolar lavage of patients, distinct signatures of complement activation in myeloid, lymphoid and epithelial ....

United States , Tilo Freiwald , National Institute Of Diabetes , National Institutes Of Health , University Hospital Frankfurt , Department Of Nephrology , Inflammation Research Section , Kidney Diseases Branch , National Heart , Blood Institute , National Institute , Kidney Diseases , National Institutes , ஒன்றுபட்டது மாநிலங்களில் , தேசிய நிறுவனம் ஆஃப் நீரிழிவு நோய் , தேசிய நிறுவனங்கள் ஆஃப் ஆரோக்கியம் , பல்கலைக்கழகம் மருத்துவமனை பிராங்க்ஃபர்ட் , துறை ஆஃப் நெப்ராலஜி , தேசிய இதயம் , இரத்தம் நிறுவனம் , தேசிய நிறுவனம் , கிட்நீ நோய்கள் , தேசிய நிறுவனங்கள் ,