Journal
SPRINGER SEMINARS IN IMMUNOPATHOLOGY
Volume 26, Issue 4, Pages 385-404Publisher
SPRINGER
DOI: 10.1007/s00281-004-0185-z
Keywords
B-1 cell; tolerance; repertoire; apoptosis; host immunity
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Funding
- NHLBI NIH HHS [HL69464, HL56989] Funding Source: Medline
- NIAMS NIH HHS [AR50659, AR47360] Funding Source: Medline
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In recent years, the subject of natural antibodies has been revisited and the immunobiological roles of these humoral factors are being better defined. These antibodies are secreted by distinct sets of innate-like B cells, B- 1 cells and marginal zone B cells, which arise early in development to become the sources of natural immune memory. Due to their interactions with a variety of self-determinants, natural antibodies have previously been postulated to play roles in the maintenance of host homeostasis. A central paradigm has recently been developed from the demonstration that oxidation derived epitopes on apoptotic cells and oxidized low-density lipoproteins are recognized by the phosphorylcholine-specific germline encoded B- 1 cell natural antibody, T15, which has provided important insights into possible house-keeping functions under both normal and pathological conditions. In this review, the potential functions of natural antibodies in the pathogenesis and progression of the chronic inflammatory condition of atherosclerosis are discussed, as well as their capacities for apoptotic cell binding and clearance. These interactions of natural antibodies and oxidation-epitopes from phospholipids appear to provide a dynamic immunobiological connection linking host responses in infection, autoimmunity and atherosclerosis.
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