Langerin

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External IDsGeneCards: [1]
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SpeciesHumanMouse
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CD207, langerin (Cluster of Differentiation 207) is a protein which in humans is encoded by the CD207 gene.[1][2] Langerin is a type II transmembrane, C-type lectin receptor on Langerhans cells.[2][3]

Function

The protein encoded by this gene is expressed in Langerhans cells which are immature dendritic cells of the epidermis and mucosa. Additionally it is known by the name C-type lectin domain family 4 member K (CD antigen CD207). It is also expressed in several other dendritic cell types including dermal CD103+ DCs and splenic CD8+ DCs. Langerin is localized in the Birbeck granules, organelles present in the cytoplasm of Langerhans cells and consisting of superimposed and zippered membranes. It is a C-type lectin with mannose binding specificity, and it has been proposed that mannose binding by this protein leads to internalization of antigen into Birbeck granules and providing access to a nonclassical antigen-processing pathway.[1]

Clinical significance

Langerin on mucosal Langerhans cells of the human genital epithelium binds to HIV-1 and subsequently internalizes it into Birbeck granules to be degraded.[4][5]

See also

References

  1. 1.0 1.1 EntrezGene 50489
  2. 2.0 2.1 Valladeau J; Ravel O; Dezutter-Dambuyant C; Moore K; Kleijmeer M; Liu Y; Duvert-Frances Vé; Vincent C; Schmitt D (2000). "Langerin, a Novel C-Type Lectin Specific to Langerhans Cells, is an Endocytic Receptor that Induces the Formation of Birbeck Granules". Immunity. 12 (1): 71–81. doi:10.1016/S1074-7613(00)80160-0. PMID 10661407.
  3. Valladeau J; Clair-Moninot Vé; Dezutter-Dambuyant C; Pin J-J; Kissenpfennig A; Mattéi M-G; Ait-Yahia S; Bates EEM; Malissen B (2002). "Identification of Mouse Langerin/CD207 in Langerhans Cells and Some Dendritic Cells of Lymphoid Tissues". Journal of Immunology. 168 (2): 782–92. doi:10.4049/jimmunol.168.2.782. PMID 11777972.
  4. De Witte L; Nabatov A; Pion M; Fluitsma D; De Jong MAWP; De Gruijl T; Piguet V; Van Kooyk Y; Geijtenbeek TBH (2007). "Langerin is a natural barrier to HIV-1 transmission by Langerhans cells". Nature Medicine. 13 (3): 367–71. doi:10.1038/nm1541. PMID 17334373.
  5. Turville S, Wilkinson J, Cameron P, Dable J, Cunningham AL (2003). "The role of dendritic cell C-type lectin receptors in HIV pathogenesis". Journal of Leukocyte Biology. 74 (5): 710–8. doi:10.1189/jlb.0503208. PMID 12960229.

Further reading

External links


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