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 PMID:23892722  

The scavenger receptor SCARF1 mediates the clearance of apoptotic cells and prevents autoimmunity.

Zaida G Ramirez-Ortiz | William F Pendergraft | Amit Prasad | Michael H Byrne | Tal Iram | Christopher J Blanchette | Andrew D Luster | Nir Hacohen | Joseph El Khoury | Terry K Means
Nature immunology | 2013

The clearance of apoptotic cells is critical for the control of tissue homeostasis; however, the full range of receptors on phagocytes responsible for the recognition of apoptotic cells remains to be identified. Here we found that dendritic cells (DCs), macrophages and endothelial cells used the scavenger receptor SCARF1 to recognize and engulf apoptotic cells via the complement component C1q. Loss of SCARF1 impaired the uptake of apoptotic cells. Consequently, in SCARF1-deficient mice, dying cells accumulated in tissues, which led to a lupus-like disease, with the spontaneous generation of autoantibodies to DNA-containing antigens, activation of cells of the immune system, dermatitis and nephritis. The discovery of such interactions of SCARF1 with C1q and apoptotic cells provides insight into the molecular mechanisms involved in the maintenance of tolerance and prevention of autoimmune disease.

Pubmed ID: 23892722

Research resources used in this publication

None found

Antibodies used in this publication

None found

Associated grants

  • Agency: NIAID NIH HHS, United States
    Id: R01-AI084884
  • Agency: NIDDK NIH HHS, United States
    Id: P30 DK043351
  • Agency: NIAID NIH HHS, United States
    Id: R01 AI084884
  • Agency: NIDDK NIH HHS, United States
    Id: F32-DK097891
  • Agency: NIDDK NIH HHS, United States
    Id: F32 DK097891
  • Agency: NIAID NIH HHS, United States
    Id: T32-AI007061
  • Agency: NIAID NIH HHS, United States
    Id: U24 AI082660
  • Agency: NIAMS NIH HHS, United States
    Id: K01-AR051367
  • Agency: NIAID NIH HHS, United States
    Id: T32 AI007061
  • Agency: NIAMS NIH HHS, United States
    Id: K01 AR051367

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