Document Detail

Comparison of cell cycle regulatory gene mRNA in three different types of human trophoblasts and effect of transforming growth factor.
MedLine Citation:
PMID:  18412775     Owner:  NLM     Status:  MEDLINE    
AIM: Identifying the factors responsible for reducing the proliferation, syncytialization, and invasiveness of trophoblast tissues, as seen with preeclampsia, intrauterine growth restriction, and spontaneous miscarriage, is a current challenge in reproductive biology. These factors, transforming growth factor (TGF)-beta as an example, can work by altering trophoblast differentiation or proliferation. We therefore investigated and compared specific markers of trophoblast proliferation and differentiation in three commonly used trophoblast tissue cell models, and also investigated the influence of TGF-beta on these markers. METHODS: In this study, we isolated human trophoblasts from first trimester and term placentas, and additionally used human choriocarcinoma cells (JEG-3). Baseline values of human chorionic gonadotropin (hCG) secretion and relative mRNA levels of cell cycle regulators (cyclin E, p21, p27, and p57) were investigated for each cell type. We also investigated the influence of TGF-beta on these parameters. RESULTS: Quantitative and longitudinal production of hCG differed between the three cell types. Significantly different amounts of cyclin E, p21, p27, and p57 mRNA were demonstrated within each cell type, as well as between all the cell types, throughout the culture time period. Each trophoblast type demonstrated a reduction of hCG secretion in response to TGF-beta. TGF-beta did not show a consistent effect on the cell cycle mRNA of any of the cell types. CONCLUSION: We were able to characterize and compare the differential production of hCG, as well as the differential expression of cell cycle-associated mRNA of early trophoblasts, term trophoblasts, and choriocarcinoma cells. The production of hCG was altered by TGF-beta, although mRNA levels were not markedly altered by TGF-beta.
Craig A H Richard; Jaqueline M Jones; Julie A DeLoia
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  The journal of obstetrics and gynaecology research     Volume:  34     ISSN:  1341-8076     ISO Abbreviation:  J. Obstet. Gynaecol. Res.     Publication Date:  2008 Apr 
Date Detail:
Created Date:  2008-04-16     Completed Date:  2008-10-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9612761     Medline TA:  J Obstet Gynaecol Res     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  152-61     Citation Subset:  IM    
Department of Obstetrics, Gynecology, and Reproductive Sciences, Magee-Women's Research Institute, Pittsburgh, Pennsylvania, USA.
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MeSH Terms
Cell Cycle Proteins / biosynthesis,  genetics
Cell Line, Tumor
Chorionic Gonadotropin / physiology*
Genes, cdc*
Placenta / cytology
RNA, Messenger / genetics,  metabolism*
Reverse Transcriptase Polymerase Chain Reaction
Transforming Growth Factor beta / pharmacology*
Trophoblasts / drug effects,  physiology*
Grant Support
Reg. No./Substance:
0/Cell Cycle Proteins; 0/Chorionic Gonadotropin; 0/RNA, Messenger; 0/Transforming Growth Factor beta

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