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Coste K, Bruet S, Chollat-Namy C, Filhol O, Cochet C, Gallot D, Marceau G, Blanchon L, Sapin V, Belville C. Characterization of RAGE and CK2 Expressions in Human Fetal Membranes. Int J Mol Sci 2023; 24:ijms24044074. [PMID: 36835482 PMCID: PMC9966553 DOI: 10.3390/ijms24044074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/07/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
At the feto-maternal interface, fetal membranes (FM) play a crucial role throughout pregnancy. FM rupture at term implicates different sterile inflammation mechanisms including pathways activated by the transmembrane glycoprotein receptor for advanced glycation end-products (RAGE) belonging to the immunoglobulin superfamily. As the protein kinase CK2 is also implicated in the inflammation process, we aimed to characterize the expressions of RAGE and the protein kinase CK2 as a candidate regulator of RAGE expression. The amnion and choriodecidua were collected from FM explants and/or primary amniotic epithelial cells throughout pregnancy and at term in spontaneous labor (TIL) or term without labor (TNL). The mRNA and protein expressions of RAGE and the CK2α, CK2α', and CK2β subunits were investigated using reverse transcription quantitative polymerase chain reaction and Western blot assays. Their cellular localizations were determined with microscopic analyses, and the CK2 activity level was measured. RAGE and the CK2α, CK2α', and CK2β subunits were expressed in both FM layers throughout pregnancy. At term, RAGE was overexpressed in the amnion from the TNL samples, whereas the CK2 subunits were expressed at the same level in the different groups (amnion/choriodecidua/amniocytes, TIL/TNL), without modification of the CK2 activity level and immunolocalization. This work paves the way for future experiments regarding the regulation of RAGE expression by CK2 phosphorylation.
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Affiliation(s)
- Karen Coste
- iGReD, Team “Translational Approach to Epithelial Injury and Repair”, UMR6293 CNRS-U1103 INSERM, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
- CHU Clermont-Ferrand, Neonatal Intensive Care Department, F-63000 Clermont-Ferrand, France
| | - Shaam Bruet
- CHU Clermont-Ferrand, Neonatal Intensive Care Department, F-63000 Clermont-Ferrand, France
| | - Caroline Chollat-Namy
- CHU Clermont-Ferrand, Neonatal Intensive Care Department, F-63000 Clermont-Ferrand, France
| | - Odile Filhol
- INSERM, CEA, UMR Biosanté, U1292, University Grenoble Alpes, F-38000 Grenoble, France
| | - Claude Cochet
- INSERM, CEA, UMR Biosanté, U1292, University Grenoble Alpes, F-38000 Grenoble, France
| | - Denis Gallot
- iGReD, Team “Translational Approach to Epithelial Injury and Repair”, UMR6293 CNRS-U1103 INSERM, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
- CHU Clermont-Ferrand, Obstetrics and Gynecology Department, F-63000 Clermont-Ferrand, France
| | - Geoffroy Marceau
- iGReD, Team “Translational Approach to Epithelial Injury and Repair”, UMR6293 CNRS-U1103 INSERM, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
- CHU Clermont-Ferrand, Biochemistry and Molecular Genetic Department, F-63000 Clermont-Ferrand, France
| | - Loïc Blanchon
- iGReD, Team “Translational Approach to Epithelial Injury and Repair”, UMR6293 CNRS-U1103 INSERM, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Vincent Sapin
- iGReD, Team “Translational Approach to Epithelial Injury and Repair”, UMR6293 CNRS-U1103 INSERM, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
- CHU Clermont-Ferrand, Biochemistry and Molecular Genetic Department, F-63000 Clermont-Ferrand, France
| | - Corinne Belville
- iGReD, Team “Translational Approach to Epithelial Injury and Repair”, UMR6293 CNRS-U1103 INSERM, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
- Correspondence: ; Tel.: +33-4-7317-8174
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Gorodeski GI. Estrogen modulation of epithelial permeability in cervical-vaginal cells of premenopausal and postmenopausal women. Menopause 2007; 14:1012-9. [PMID: 17572644 PMCID: PMC2366810 DOI: 10.1097/gme.0b013e3180587eb5] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To understand how menopause affects estrogen regulation of epithelial permeability. DESIGN Experimental study using human normal epithelial vaginal-ectocervical cells obtained from premenopausal and postmenopausal women. Endpoints were paracellular permeability (determined in terms of the resistance of the lateral intercellular space [RLIS] and tight junctions [RTJ]); cellular G-actin; nonmuscle myosin type II-B (NMMII-B) filamentation and magnesium-adenosine triphosphatase activity; and occludin expression (in terms of expression of the functional 65-kd and truncated 50-kd forms). RESULTS Estrogen induced an early transient decrease in RLIS that correlated in time with increases in cellular G-actin and NMMII-B magnesium-adenosine triphosphatase activity and with decreases in NMMII-B filamentation and a slower decrease in RTJ that correlated with up-regulation of the 50-kd form of occludin. Estrogen modulation of G-actin NMMII-B and occludin could be described in terms of interaction with the estrogen receptor mechanism. The potency of estrogen effects was similar in cells of premenopausal and postmenopausal women, but the effects occurred earlier in cells of premenopausal women. RLIS returned to baseline faster in cells of postmenopausal women, and the effect was associated with faster reversal of estrogen changes in NMMII-B despite the continued presence of estrogen in the culture medium, suggesting that desensitization of the actin-myosin effects to estrogen actions occur distal to the estrogen receptor. CONCLUSIONS The results suggest that the transient estrogen decrease in RLIS is mediated by modulation of actomyosin, and it is affected by the aging process. In contrast, the late persistent decrease in RTJ is mediated by occludin degradation and is unrelated to aging.
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Affiliation(s)
- George I Gorodeski
- Department of Reproductive Biology, Physiology and Biophysics, Case Western Reserve University, Cleveland, OH, USA.
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