- 同
- Virus-encoded semaphorin protein receptor
English Journal
- Soluble CD100 functions on human monocytes and immature dendritic cells require plexin C1 and plexin B1, respectively.
- Chabbert-de Ponnat I1, Marie-Cardine A, Pasterkamp RJ, Schiavon V, Tamagnone L, Thomasset N, Bensussan A, Boumsell L.Author information 1INSERM U448, Faculty of Medicine, 8 rue du Général Sarrail, 94010 Créteil Cedex, France.AbstractCD100 represents the first semaphorin described in the immune system. It is expressed as a 300-kDa homodimer at the surface of most hematopoietic cells, but is also found in a soluble form following a proteolytic cleavage upon cell activation. We herein established that soluble CD100 (sCD100) impaired the migration of human monocytes and immature dendritic cells (DCs), but not of mature DCs. Performing competition assays, we identified plexin C1 (VESPR/CD232) as being involved in sCD100-mediated effects on human monocytes. Interestingly, we observed a complete down-regulation of plexin C1 expression during the in vitro differentiation process of monocytes to immature DCs, while concomitantly the surface expression of plexin B1 was induced. The latter receptor then binds sCD100 on immature DCs, mediating its inhibitory effect on cell migration. Finally, we showed that sCD100 modulated the cytokine production from monocytes and immature DCs. Together these results suggest that sCD100 plays a critical role in the regulation of antigen-presenting cell migration and functions via a tightly regulated process of receptor expression.
- International immunology.Int Immunol.2005 Apr;17(4):439-47. Epub 2005 Mar 3.
- CD100 represents the first semaphorin described in the immune system. It is expressed as a 300-kDa homodimer at the surface of most hematopoietic cells, but is also found in a soluble form following a proteolytic cleavage upon cell activation. We herein established that soluble CD100 (sCD100) impair
- PMID 15746246
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Related Pictures
★リンクテーブル★
[★]
セマフォリン
- 同
- CD232
[★]
- 同
- FcεRII, 低親和性IgE受容体、Leucine-20、Blast-2
発現細胞
- 成熟B細胞、活性化マクロファージ、好酸球、濾胞樹状細胞、血小板
WCH.37
- B lymphocytes, where it appears to be associated with IgD
- follicular DCs, especially those in the light zone of the germinal centers
- transiently on some T cells in allergic individuals
- Langerhans cels
- monocytes
- platelets
- NK cells
- nasopharyngeal carcinoma cells
- B-CLL
- EBV-transformed B cells
機能
- IgEの受容体(低親和性)
- CD21やα-chain of the β2 integrinsにも結合する。
- 可溶性のCD23(sCD23)はIgEの産生を亢進したりIgE/Agの提示を促進したりする。またsCD23はいろいろなサイトカイン様の作用を呈する(WCH.37)
別名
ファミリー
臨床関連
CLL and WM
[★]
- 同
- Leucine-5, SRBC receptor, LFA-2
- 関
- CD
発現細胞
分子量
機能
- リンパ球が抗原提示細胞と相互作用するのに重要 (IMM.343)
別名
ファミリー