HLA class I/NK cell receptor interaction in early human decidua basalis: possible functional consequences.
Human decidual NK (dNK) cells differ from their peripheral blood (PB)-NK counterparts. The major subset of PB-NK is CD56dim, CD16+, CD160+ (highly cytolytic), whereas the major subpopulation of dNK is CD56bright, CD16- and CD160- (high cytokine producer). Extravillous cytotrophoblast invading the decidua basalis in early pregnancy expresses the polymorphic HLA-C, and nonpolymorphic HLA-E and HLA-G molecules that can interact with specific HLA class I-dependent dNK receptors, including the immunoglobulin-like KIRs, the lectin-like CD94/NKG2 and the CD160 receptors. There is no clear evidence thus far that dNK cells kill trophoblast cells. Instead they are able to secrete cytokines which are likely to be beneficial for the placental development, maternal uterine spiral arteries remodeling, and the antiviral immune response.
Rabot
Magali
M
INSERM U563, Hôpital Purpan Hopital Paule de Viguier, Toulouse, France.
Tabiasco
Julie
J
Polgar
Beata
B
Aguerre-Girr
Maryse
M
Berrebi
Alain
A
Bensussan
Armand
A
Strbo
Natasa
N
Rukavina
Daniel
D
Le Bouteiller
Philippe
P
D003656:Decidua / Q000276:immunology*; D005260:Female; D006680:HLA Antigens / Q000378:metabolism*; D006801:Humans; D007694:Killer Cells, Natural / Q000145:classification / Q000276:immunology*; D018448:Models, Immunological; D011247:Pregnancy; D011971:Receptors, Immunologic / Q000378:metabolism; D014327:Trophoblasts / Q000276:immunology
D006680:HLA Antigens; D011971:Receptors, Immunologic