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Cyclosporine A induces titin expression via MAPK/ERK signalling and improves proliferative and invasive potential of human trophoblast cells

Cyclosporine A induces titin expression via MAPK/ERK signalling and improves proliferative and... BACKGROUNDCyclosporin A (CsA) is a powerful immunosuppressive that has been widely used to prevent organ rejection and to treat certain autoimmune diseases. Our previous study showed that CsA at low concentrations could promote proliferation and invasion, and inhibit apoptosis, of human first trimester trophoblasts. In the present study, we further explored the potential mechanism and signal pathway.METHODSAfter treatment of JAR cells with CsA, we screened the differentially expressed genes by suppression subtractive hybridization (SSH), and characterized the differentially expressed gene, titin, in human first-trimester trophoblasts by reverse transcriptionpolymerase chain reaction and Western blot. Mitogen-activated protein kinase (MAPK) activity was evaluated by ELISA.RESULTSCsA stimulated proliferation and invasion of human trophoblasts in a dose-dependent manner, and this appeared to be positive correlated with titin transcription, suggesting that CsA regulates biological functions of human trophoblast by inducing titin expression. Furthermore, the CsA treatment increased the MAPK activity, and blocking of the signaling pathway by Mitogen-activated protein MAPK (MEK) inhibitor, U0126, inhibited CsA-induced titin transcription in trophoblasts.CONCLUSIONSOur results indicate that titin expression is induced by CsA via activation of MAPK pathways and this may possibly be involved in promoting human trophoblast growth and invasiveness, which is beneficial to embryo viability. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Human Reproduction Oxford University Press

Cyclosporine A induces titin expression via MAPK/ERK signalling and improves proliferative and invasive potential of human trophoblast cells

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References (39)

Publisher
Oxford University Press
Copyright
© Published by Oxford University Press.
Subject
ARTICLES
ISSN
0268-1161
eISSN
1460-2350
DOI
10.1093/humrep/dem222
pmid
17636278
Publisher site
See Article on Publisher Site

Abstract

BACKGROUNDCyclosporin A (CsA) is a powerful immunosuppressive that has been widely used to prevent organ rejection and to treat certain autoimmune diseases. Our previous study showed that CsA at low concentrations could promote proliferation and invasion, and inhibit apoptosis, of human first trimester trophoblasts. In the present study, we further explored the potential mechanism and signal pathway.METHODSAfter treatment of JAR cells with CsA, we screened the differentially expressed genes by suppression subtractive hybridization (SSH), and characterized the differentially expressed gene, titin, in human first-trimester trophoblasts by reverse transcriptionpolymerase chain reaction and Western blot. Mitogen-activated protein kinase (MAPK) activity was evaluated by ELISA.RESULTSCsA stimulated proliferation and invasion of human trophoblasts in a dose-dependent manner, and this appeared to be positive correlated with titin transcription, suggesting that CsA regulates biological functions of human trophoblast by inducing titin expression. Furthermore, the CsA treatment increased the MAPK activity, and blocking of the signaling pathway by Mitogen-activated protein MAPK (MEK) inhibitor, U0126, inhibited CsA-induced titin transcription in trophoblasts.CONCLUSIONSOur results indicate that titin expression is induced by CsA via activation of MAPK pathways and this may possibly be involved in promoting human trophoblast growth and invasiveness, which is beneficial to embryo viability.

Journal

Human ReproductionOxford University Press

Published: Sep 18, 2007

Keywords: Keywords cyclosporin A proliferation and invasion titin MAPK/ERK trophoblast

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