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Expression of surface CD1d in the extravillous trophoblast cells of early gestational placenta is downregulated in a manner dependent on trophoblast differentiation.

Abstract：

:CD1d is a specific ligand for the invariant Valpha24Vbeta11-natural killer T (iNKT) cells that play an important role in placental development during early human pregnancy. The localization and regulation of placental CD1d expression remain unclear. Immunohistochemistry of human early gestational placentas revealed CD1d was present in villous and extravillous trophoblast (EVT) but not in syncytiotrophoblast or decidual cells. CD1d immunoreactivity in EVT cells decreased with EVT differentiation. Flow cytometry of primary cultured human trophoblast cells confirmed cell-surface expression of CD1d decreased with time in culture. These changes in CD1d expression occur at the level of transcription. TGF-beta1 secreted from the cultured EVT cells accumulated with time in culture and directly suppressed CD1d expression, as evidenced by monoclonal antibody neutralization of TGF-beta1 effects. Thus, trophoblast differentiation is characterized by TGF-beta1-mediated decreases in trophoblast cell CD1d expression. This effect may support appropriate activation of decidual iNKT cells at the maternal-fetal interface.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Matsumoto J,Kawana K,Nagamatsu T,Schust DJ,Fujii T,Sato H,Hyodo H,Yasugi T,Kozuma S,Taketani Y

doi

10.1016/j.bbrc.2008.04.051

subject

Has Abstract

pub_date

2008-06-27 00:00:00

pages

236-41

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(08)00703-1

journal_volume

371

pub_type

杂志文章

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