{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,1]],"date-time":"2026-11-01T17:54:16Z","timestamp":1793555656207,"version":"4.5.0"},"reference-count":35,"publisher":"American Society for Clinical Investigation","issue":"15","license":[{"start":{"date-parts":[[2023,8,8]],"date-time":"2023-08-08T00:00:00Z","timestamp":1691452800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Grant-in-Aid from the Ministry of Education, Culture, Sports, Science, and Technology of Japan","award":["JP 20K08581"],"award-info":[{"award-number":["JP 20K08581"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,8,8]]},"abstract":"<jats:p>Neutrophil extracellular trap (NET) formation contributes to immune defense and is a distinct form of cell death. Excessive NET formation is found in patients with anti\u2013neutrophil cytoplasmic antibody\u2013associated (ANCA-associated) vasculitis (AAV), contributing to disease progression. The clearance of dead cells by macrophages, a process known as efferocytosis, is regulated by the CD47-mediated \u201cdon\u2019t eat me\u201d signal. Hence, we hypothesized that pathogenic NETs in AAV escape from efferocytosis via the CD47 signaling pathway, resulting in the development of necrotizing vasculitis. Immunostaining for CD47 in human renal tissues revealed high CD47 expression in crescentic glomerular lesions of patients with AAV. In ex vivo studies, ANCA-induced netting neutrophils increased the expression of CD47 with the reduction of efferocytosis. After efferocytosis, macrophages displayed proinflammatory phenotypes. The blockade of CD47 in spontaneous crescentic glomerulonephritis-forming\/Kinjoh (SCG\/Kj) mice ameliorated renal disease and reduced myeloperoxidase-ANCA (MPO-ANCA) titers with a reduction in NET formation. Thus, CD47 blockade would protect against developing glomerulonephritis in AAV via restored efferocytosis of ANCA-induced NETs.<\/jats:p>","DOI":"10.1172\/jci.insight.167486","type":"journal-article","created":{"date-parts":[[2023,6,27]],"date-time":"2023-06-27T12:00:44Z","timestamp":1687867244000},"source":"Crossref","is-referenced-by-count":31,"title":["CD47 blockade ameliorates autoimmune vasculitis via efferocytosis of neutrophil extracellular traps"],"prefix":"10.1172","volume":"8","author":[{"given":"Satoka","family":"Shiratori-Aso","sequence":"first","affiliation":[{"name":"Department of Rheumatology, Endocrinology, and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5558-4486","authenticated-orcid":true,"given":"Daigo","family":"Nakazawa","sequence":"additional","affiliation":[{"name":"Department of Rheumatology, Endocrinology, 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