Expression of Fc gamma binding sites on human extraplacental membranes.
Expression of Fc gamma binding sites on human extraplacental membranes.
复制标题
人胎盘外膜上 Fc γ 结合位点的表达。
DOI:
10.1111/j.1600-0897.1983.tb00248.x
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发表时间:
1983
期刊:
影响因子:
--
通讯作者:
King,CR
中科院分区:
文献类型:
--
作者:
Wood,GW;Johnson,B;Halsey,JF;King,CR
Binding sites for the Fc portion of immunoglobulin G (IgG) molecules (FcγBS) were identified on amnionic epithelial cells and chorionic trophoblast cells in human extraplacental membranes using direct immunofluorescence with labeled human IgG. The binding sites are similar to FcγBS on placental trophoblast in their specificity and high degree of relative binding affinity for IgG monomers. Neither immunoglobulin A (IgA) nor IgM bound to a significant degree to the membranes. Binding was completely inhibited with unlabeled IgG but not F(ab')2 fragments of IgG. Studies on isolated amnion cells demonstrated that the binding sites are expressed on the cell membrane. At the level of sensitivity of the immunohistologic methods used, aggregated IgG or antigen‐antibody complexes failed to bind amnionic epithelial cells or chorionic trophoblasts. This is in contrast to FcγBS on macrophages which, being present in the same tissue, failed to exhibit significant binding of deaggregated IgG but bound complexes avidly.
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DOI:
--
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
White,BA;Bancroft,FC
通讯作者:
Bancroft,FC
影响因子:
7.2
作者:
Wortsman,J;Wehrenberg,WB;Gavin3rd,JR;Allen,JP
通讯作者:
Allen,JP
影响因子:
3.9
作者:
Melner,MH;Puett,D
通讯作者:
Puett,D
影响因子:
4.8
作者:
S. Tsong;D. Phillips;N. Halmi;A. Liotta;A. Margioris;C. Bardin;D. Krieger
通讯作者:
D. Krieger
影响因子:
3.6
作者:
R. Koos;F. J. Jaccarino;R. Magaril;W. L. Le Maire
通讯作者:
W. L. Le Maire