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High-mobility group box protein 1 and its signalling receptors in human preterm and term cervix

Dubicke, Aurelija; Andersson, Peter; Fransson, Emma; Andersson, Eva; Sioutas, Angelos; Malmström, Anders LU ; Sverremark-Ekstrom, Eva and Ekman-Ordeberg, Gunvor (2010) In Journal of Reproductive Immunology 84(1). p.86-94
Abstract
The objective of this study was to identify possible changes in mRNA and protein expression of high-mobility group box protein 1 (HMGB1) and its suggested receptors - receptor for advanced glycation end-products (RAGE) and Toll-like receptor 2 (TLR2) and TLR4 - in human cervix during pregnancy, term and preterm labor. Cervical biopsies were taken from 58 women: 20 at preterm labor, 24 at term labor, 10 at term not in labor and 4 from non-pregnant women. Real-time RT-PCR was used to quantify mRNA expression, and immunohistochemistry and ELISA for protein analysis. HMGB1, RAGE, TLR2 and TLR4 proteins were localized and their mRNA expression was detected in the cervix. There was more extranuclear HMGB1 in the cervical epithelium and stroma in... (More)
The objective of this study was to identify possible changes in mRNA and protein expression of high-mobility group box protein 1 (HMGB1) and its suggested receptors - receptor for advanced glycation end-products (RAGE) and Toll-like receptor 2 (TLR2) and TLR4 - in human cervix during pregnancy, term and preterm labor. Cervical biopsies were taken from 58 women: 20 at preterm labor, 24 at term labor, 10 at term not in labor and 4 from non-pregnant women. Real-time RT-PCR was used to quantify mRNA expression, and immunohistochemistry and ELISA for protein analysis. HMGB1, RAGE, TLR2 and TLR4 proteins were localized and their mRNA expression was detected in the cervix. There was more extranuclear HMGB1 in the cervical epithelium and stroma in preterm and term labor compared to the term not in labor. TLR2 mRNA expression was upregulated 5-fold in term labor and 3-fold in preterm labor compared to term not in labor and non-pregnant controls. There was lower expression of TLR2 and TLR4 mRNAs in preterm labor compared to term. Lower mRNA expression of HMGB1 was found in the subgroup with preterm premature rupture of membranes than in the rest of the preterm group, where levels were significantly higher than in term labor. In conclusion, extranuclear expression of HMGB1 during labor suggests a possible role of HMGB1 during the process of cervical ripening. Changes in expression of mRNAs encoding HMGB1, TLR2 and TLR4 in preterm labor suggest differences in the mechanism of cervical ripening at preterm and term delivery. (C) 2009 Elsevier Ireland Ltd. All rights reserved. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
keywords
Toll-like receptors, glycation end-products (RAGE), Receptor for advanced, Preterm birth, HMGB1, Cervical ripening, Cervix
in
Journal of Reproductive Immunology
volume
84
issue
1
pages
86 - 94
publisher
Elsevier
external identifiers
  • wos:000274445600011
  • scopus:73149113941
ISSN
1872-7603
DOI
10.1016/j.jri.2009.09.010
language
English
LU publication?
yes
id
47b0fcdc-149d-455d-a906-2cd30469a24d (old id 1568888)
date added to LUP
2010-03-17 10:43:17
date last changed
2018-07-01 03:15:37
@article{47b0fcdc-149d-455d-a906-2cd30469a24d,
  abstract     = {The objective of this study was to identify possible changes in mRNA and protein expression of high-mobility group box protein 1 (HMGB1) and its suggested receptors - receptor for advanced glycation end-products (RAGE) and Toll-like receptor 2 (TLR2) and TLR4 - in human cervix during pregnancy, term and preterm labor. Cervical biopsies were taken from 58 women: 20 at preterm labor, 24 at term labor, 10 at term not in labor and 4 from non-pregnant women. Real-time RT-PCR was used to quantify mRNA expression, and immunohistochemistry and ELISA for protein analysis. HMGB1, RAGE, TLR2 and TLR4 proteins were localized and their mRNA expression was detected in the cervix. There was more extranuclear HMGB1 in the cervical epithelium and stroma in preterm and term labor compared to the term not in labor. TLR2 mRNA expression was upregulated 5-fold in term labor and 3-fold in preterm labor compared to term not in labor and non-pregnant controls. There was lower expression of TLR2 and TLR4 mRNAs in preterm labor compared to term. Lower mRNA expression of HMGB1 was found in the subgroup with preterm premature rupture of membranes than in the rest of the preterm group, where levels were significantly higher than in term labor. In conclusion, extranuclear expression of HMGB1 during labor suggests a possible role of HMGB1 during the process of cervical ripening. Changes in expression of mRNAs encoding HMGB1, TLR2 and TLR4 in preterm labor suggest differences in the mechanism of cervical ripening at preterm and term delivery. (C) 2009 Elsevier Ireland Ltd. All rights reserved.},
  author       = {Dubicke, Aurelija and Andersson, Peter and Fransson, Emma and Andersson, Eva and Sioutas, Angelos and Malmström, Anders and Sverremark-Ekstrom, Eva and Ekman-Ordeberg, Gunvor},
  issn         = {1872-7603},
  keyword      = {Toll-like receptors,glycation end-products (RAGE),Receptor for advanced,Preterm birth,HMGB1,Cervical ripening,Cervix},
  language     = {eng},
  number       = {1},
  pages        = {86--94},
  publisher    = {Elsevier},
  series       = {Journal of Reproductive Immunology},
  title        = {High-mobility group box protein 1 and its signalling receptors in human preterm and term cervix},
  url          = {http://dx.doi.org/10.1016/j.jri.2009.09.010},
  volume       = {84},
  year         = {2010},
}