Article (Scientific journals)
The IGF system in in-vitro human decidualization
Ganeff, Corinne; Chatel, G.; Munaut, Carine et al.
2009In Molecular Human Reproduction, 15 (1), p. 27-38
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Keywords :
cAMP; decidualization; endometrium; insulin-like growth factor; progesterone
Abstract :
[en] Decidualization of endometrial stromal cells (ESCs) is critical for a successful pregnancy but the molecular mechanisms of the process are poorly understood. In this study, we investigated whether the insulin-like growth factor (IGF) network is involved in this cellular process. Expression kinetics of members of the IGF system was examined at both mRNA and protein levels during in-vitro decidualization of cultured human ESCs. We found a significant up-regulation of IGF-II as well as of IGF-I receptor and the A and B insulin receptor (InsR) isoforms. In addition, levels of the key adaptor proteins insulin receptor substrate 1 (IRS-1) and IRS-2 increased, suggesting a potential involvement of the IGF signalling pathway in the decidualization process. Expression of two IGF binding proteins, IGFBP-1 and IGFBP-4, which can inhibit IGF action, also increased. In order to determine whether IGF signalling was activated during decidualization, the phosphorylation status of the receptors and the adaptor proteins was estimated. Only IRS-2 was slightly phosphorylated in decidualized cells and was further activated by the addition of exogenous IGF-II. These results suggest that the IGF signalling pathway could play a crucial role in the functions of decidualized endometrial cells
Research center :
Giga-Cancer - ULiège
Disciplines :
Anatomy (cytology, histology, embryology...) & physiology
Author, co-author :
Ganeff, Corinne ;  Université de Liège - ULiège > GIGA-R : Virologie - Immunologie
Chatel, G.
Munaut, Carine  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Frankenne, F.
Foidart, Jean-Michel ;  Université de Liège - ULiège > Département des sciences cliniques > Gynécologie - Obstétrique - Labo de biologie des tumeurs et du développement
Winkler, Rose ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Anatomie et cytologie pathologiques
Language :
English
Title :
The IGF system in in-vitro human decidualization
Publication date :
2009
Journal title :
Molecular Human Reproduction
ISSN :
1360-9947
eISSN :
1460-2407
Publisher :
Oxford University Press, Oxford, United Kingdom
Volume :
15
Issue :
1
Pages :
27-38
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 January 2010

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