Article (Scientific journals)
Evidence of a limited contribution of feto-maternal interactions to trophoblast differentiation along the invasive pathway
Goffin, Frédéric; Munaut, Carine; Malassine, A. et al.
2003In Tissue Antigens, 62 (2), p. 104-116
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Keywords :
deciduas; fallopian tube; implantation; trophoblast
Abstract :
[en] Trophoblast differentiation is a key event in human placental development. During extravillous trophoblast (EVT) differentiation, stem cells from the anchoring villi detach from their basement membrane and proliferate to form aggregates called trophoblast cell columns (TCCs). They subsequently invade the decidua and differentiate into interstitial and endovascular trophoblasts. The influence of the decidua on EVT differentiation is controversial. We therefore compared the pattern of trophoblast differentiation marker expression in viable intrauterine and tubal pregnancies, as decidual cell markers (prolactin [PRL] and insulin-like growth factor binding Protein-1 [IGFBP1]) were only expressed in endometrial implantation sites. Extravillous trophoblast differentiation in anchoring villi from uterine and ectopic pregnancies exhibited a comparable phenotypical switch: alpha6 integrin subunit, E-cadherin, EGF receptor, Ki 67 and connexin 40 were localized in the proximal part of the TCC, while alpha5beta1 and alpha1 integrins, c-erb B2, hPL and HLA-G were expressed by invasive cytotrophoblasts. The cyclin-dependent kinase inhibitors p16 and p57 were mainly detected in invasive cytotrophoblasts some distance from the columns. However, the TCC was markedly longer in tubal pregnancy than in intrauterine pregnancy. These findings suggest that the decidua is not necessary to trigger EVT invasion, but that it is likely to limit the extent of the TCC and to accelerate the onset of EVT migration.
Disciplines :
Immunology & infectious disease
Author, co-author :
Goffin, Frédéric ;  Centre Hospitalier Universitaire de Liège - CHU > Gynécologie-Obstétrique CHR
Munaut, Carine  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Malassine, A.
Evain-Brion, D.
Frankenne, Francis
Fridman, Viviana ;  Centre Hospitalier Universitaire de Liège - CHU > Anatomie pathologique
Dubois, Michel ;  Université de Liège - ULiège > Services généraux (Faculté de médecine) > Relations académiques et scientifiques (Médecine)
Uzan, S.
Merviel, P.
Foidart, Jean-Michel ;  Université de Liège - ULiège > Département des sciences cliniques > Gynécologie - Obstétrique
Language :
English
Title :
Evidence of a limited contribution of feto-maternal interactions to trophoblast differentiation along the invasive pathway
Publication date :
August 2003
Journal title :
Tissue Antigens
ISSN :
0001-2815
eISSN :
1399-0039
Publisher :
International Booksellers Publishers, Copenhagen, Denmark
Volume :
62
Issue :
2
Pages :
104-116
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 07 April 2009

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