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An immune receptor (or immunologic receptor) is a receptor, usually on a cell membrane, which binds to a substance (for example, a cytokine) and causes a response in the immune system.
One class of non-self molecules are called antigens (short for antibody generators) and are defined as substances that bind to specific immune receptors and elicit an immune response.
Contents |
Types
The main receptors in the immune system are pattern recognition receptors (PRRs), Toll-like receptors (TLRs), killer activated and killer inhibitor receptors (KARs and KIRs), complement receptors, Fc receptors, B cell receptors and T cell receptors. [1]
| Receptor | Bind to [2] | Function[2] |
|---|---|---|
| pattern recognition receptors (PRRs) | pathogen-associated molecular patterns (PAMP) | inflammation --> destroying pathogen |
| Toll-like receptors (TLRs) | Mediate cytokine production --> inflammation and guiding immune cells to the site | |
| killer activated and killer inhibitor receptors (KARs and KIRs) | Avails NK cells to identify abnormal host cells (KAR) or inhibit inappropriate host cell destruction (KIR) | |
| complement receptors | complement proteins on e.g. microbes | Allow phagocytic and B cells to recognize microbes and immune complexes |
| Fc receptors | epitope-antibody complexes | Stimulate fagocytosis |
| B cell receptors | epitopes | B cell differentiation into plasma cells and proliferation |
| T cell receptors | epitopes bound to MHC | Activate T cells |
See also
- antigen
- templates at bottom
References
- ^ Lippincott's Illustrated Reviews: Immunology. Paperback: 384 pages. Publisher: Lippincott Williams & Wilkins; (July 1, 2007). Language: English. ISBN-10: 0781795435. ISBN-13: 978-0781795432. Page 20
- ^ a b Unless else specified in boxes, then ref is: Lippincott's Illustrated Reviews: Immunology. Paperback: 384 pages. Publisher: Lippincott Williams & Wilkins; (July 1, 2007). Language: English. ISBN-10: 0781795435. ISBN-13: 978-0781795432. Page 20
External links
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- This page was last modified on 6 April 2008, at 17:38.
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