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Muter J, Brighton PJ, Lucas ES, Lacey L, Shmygol A, Quenby S, Blanks AM, Brosens JJ. Progesterone-Dependent Induction of Phospholipase C-Related Catalytically Inactive Protein 1 (PRIP-1) in Decidualizing Human Endometrial Stromal Cells. Endocrinology 2016; 157:2883-93. [PMID: 27167772 PMCID: PMC4972893 DOI: 10.1210/en.2015-1914] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Decidualization denotes the transformation of endometrial stromal cells into specialized decidual cells. In pregnancy, decidual cells form a protective matrix around the implanting embryo, enabling coordinated trophoblast invasion and formation of a functional placenta. Continuous progesterone (P4) signaling renders decidual cells resistant to various environmental stressors, whereas withdrawal inevitably triggers tissue breakdown and menstruation or miscarriage. Here, we show that PLCL1, coding phospholipase C (PLC)-related catalytically inactive protein 1 (PRIP-1), is highly induced in response to P4 signaling in decidualizing human endometrial stromal cells (HESCs). Knockdown experiments in undifferentiated HESCs revealed that PRIP-1 maintains basal phosphoinositide 3-kinase/Protein kinase B activity, which in turn prevents illicit nuclear translocation of the transcription factor forkhead box protein O1 and induction of the apoptotic activator BIM. By contrast, loss of this scaffold protein did not compromise survival of decidual cells. PRIP-1 knockdown did also not interfere with the responsiveness of HESCs to deciduogenic cues, although the overall expression of differentiation markers, such as PRL, IGFBP1, and WNT4, was blunted. Finally, we show that PRIP-1 in decidual cells uncouples PLC activation from intracellular Ca(2+) release by attenuating inositol 1,4,5-trisphosphate signaling. In summary, PRIP-1 is a multifaceted P4-inducible scaffold protein that gates the activity of major signal transduction pathways in the endometrium. It prevents apoptosis of proliferating stromal cells and contributes to the relative autonomy of decidual cells by silencing PLC signaling downstream of Gq protein-coupled receptors.
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Affiliation(s)
- Joanne Muter
- Division of Biomedical Sciences (J.M., P.J.B., E.S.L., L.L., A.S., S.Q., A.M.B., J.J.B.), Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom; and University Hospitals Coventry and Warwickshire National Health Service Trust (S.Q., J.J.B.), Coventry, CV2 2DX United Kingdom; and Tommy's National Miscarriage Research Centre (E.S.L., S.Q., J.J.B.), University Hospital Coventry and Warwickshire, Coventry, CV2 2DX United Kingdom
| | - Paul J Brighton
- Division of Biomedical Sciences (J.M., P.J.B., E.S.L., L.L., A.S., S.Q., A.M.B., J.J.B.), Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom; and University Hospitals Coventry and Warwickshire National Health Service Trust (S.Q., J.J.B.), Coventry, CV2 2DX United Kingdom; and Tommy's National Miscarriage Research Centre (E.S.L., S.Q., J.J.B.), University Hospital Coventry and Warwickshire, Coventry, CV2 2DX United Kingdom
| | - Emma S Lucas
- Division of Biomedical Sciences (J.M., P.J.B., E.S.L., L.L., A.S., S.Q., A.M.B., J.J.B.), Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom; and University Hospitals Coventry and Warwickshire National Health Service Trust (S.Q., J.J.B.), Coventry, CV2 2DX United Kingdom; and Tommy's National Miscarriage Research Centre (E.S.L., S.Q., J.J.B.), University Hospital Coventry and Warwickshire, Coventry, CV2 2DX United Kingdom
| | - Lauren Lacey
- Division of Biomedical Sciences (J.M., P.J.B., E.S.L., L.L., A.S., S.Q., A.M.B., J.J.B.), Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom; and University Hospitals Coventry and Warwickshire National Health Service Trust (S.Q., J.J.B.), Coventry, CV2 2DX United Kingdom; and Tommy's National Miscarriage Research Centre (E.S.L., S.Q., J.J.B.), University Hospital Coventry and Warwickshire, Coventry, CV2 2DX United Kingdom
| | - Anatoly Shmygol
- Division of Biomedical Sciences (J.M., P.J.B., E.S.L., L.L., A.S., S.Q., A.M.B., J.J.B.), Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom; and University Hospitals Coventry and Warwickshire National Health Service Trust (S.Q., J.J.B.), Coventry, CV2 2DX United Kingdom; and Tommy's National Miscarriage Research Centre (E.S.L., S.Q., J.J.B.), University Hospital Coventry and Warwickshire, Coventry, CV2 2DX United Kingdom
| | - Siobhan Quenby
- Division of Biomedical Sciences (J.M., P.J.B., E.S.L., L.L., A.S., S.Q., A.M.B., J.J.B.), Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom; and University Hospitals Coventry and Warwickshire National Health Service Trust (S.Q., J.J.B.), Coventry, CV2 2DX United Kingdom; and Tommy's National Miscarriage Research Centre (E.S.L., S.Q., J.J.B.), University Hospital Coventry and Warwickshire, Coventry, CV2 2DX United Kingdom
| | - Andrew M Blanks
- Division of Biomedical Sciences (J.M., P.J.B., E.S.L., L.L., A.S., S.Q., A.M.B., J.J.B.), Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom; and University Hospitals Coventry and Warwickshire National Health Service Trust (S.Q., J.J.B.), Coventry, CV2 2DX United Kingdom; and Tommy's National Miscarriage Research Centre (E.S.L., S.Q., J.J.B.), University Hospital Coventry and Warwickshire, Coventry, CV2 2DX United Kingdom
| | - Jan J Brosens
- Division of Biomedical Sciences (J.M., P.J.B., E.S.L., L.L., A.S., S.Q., A.M.B., J.J.B.), Warwick Medical School, University of Warwick, Coventry CV4 7AL, United Kingdom; and University Hospitals Coventry and Warwickshire National Health Service Trust (S.Q., J.J.B.), Coventry, CV2 2DX United Kingdom; and Tommy's National Miscarriage Research Centre (E.S.L., S.Q., J.J.B.), University Hospital Coventry and Warwickshire, Coventry, CV2 2DX United Kingdom
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Viswanath G, Chatterjee S, Roy P. Assessment of luteinizing hormone receptor function in an endometrial cancer cell line, Ishikawa cells in response to human chorionic gonadotrophin (hCG). Mol Cell Endocrinol 2007; 272:14-21. [PMID: 17548147 DOI: 10.1016/j.mce.2007.04.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2006] [Revised: 03/17/2007] [Accepted: 04/12/2007] [Indexed: 10/23/2022]
Abstract
Luteinizing hormone (LH) and human chorionic gonadotropin (hCG) play an important role in the development and maintenance of male and female gonads. Both these hormones act through the same specific receptor LH/hCG receptor (LHR). Recent studies have shown the existence of functional LHR in several non-gonadal tissues. The aim of this study was to confirm the functional existence of LHR in an endometrial adenocarcinoma cell line, Ishikawa cells, which has been used since long as an in vitro uterine endometrium model. Reverse transcriptase-polymerase chain reaction (RT-PCR) data showed the stable expression of LHR in this cell line. However, the receptor failed to activate the PKA pathway in response to hCG, which is the most conventional mode of LH/hCG action in target tissues. When tested for other pathways, hCG failed to activate them either. Nested RT-PCR confirmed the existence of full-length LHR and this was further supported by Western blot. This study demonstrated that although Ishikawa cells do possess a full-length LHR, which was confirmed by RT-PCR, nested RT-PCR, Western blot and DNA sequencing, it failed to activate the conventional LH-mediated downstream signaling. Based on these data we hypothesize that in Ishikawa cells LH/hCG does not utilize its conventional receptor. Whether it acts through some other receptor is a question, which can be answered through future research.
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Affiliation(s)
- G Viswanath
- Molecular Endocrinology Laboratory, Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee 247 667, Uttaranchal, India
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Cameo P, Srisuparp S, Strakova Z, Fazleabas AT. Chorionic gonadotropin and uterine dialogue in the primate. Reprod Biol Endocrinol 2004; 2:50. [PMID: 15236652 PMCID: PMC471569 DOI: 10.1186/1477-7827-2-50] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2004] [Accepted: 07/05/2004] [Indexed: 01/11/2023] Open
Abstract
Implantation is a complex spatio-temporal interaction between the growing embryo and the mother, where both players need to be highly synchronized to be able to establish an effective communication to ensure a successful pregnancy. Using our in vivo baboon model we have shown that Chorionic Gonadotropin (CG), as the major trophoblast derived signal, not only rescues the corpus luteum but also modulates the uterine environment in preparation for implantation. This response is characterized by an alteration in both the morphological and biochemical activity in the three major cell types: luminal and glandular epithelium and stromal fibroblasts. Furthermore, CG and factors from the ovary have a synergistic effect on the receptive endometrium. Novel local effects of CG which influence the immune system to permit the survival of the fetal allograft and prevent endometrial cell death are also discussed in this review. An alternate extracellular signal-regulated kinase (ERK) activation pathway observed in epithelial endometrial cells and the possibility of differential expression of the CG/LH-R isoforms during gestation, open many questions regarding the mechanism of action of CG and its signal transduction pathway within the primate endometrium.
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Affiliation(s)
- Paula Cameo
- Department of Obstetrics and Gynecology, University of Illinois at Chicago, Chicago, IL, USA
| | - Santha Srisuparp
- Department of Obstetrics and Gynecology, University of Illinois at Chicago, Chicago, IL, USA
| | - Zuzana Strakova
- Department of Obstetrics and Gynecology, University of Illinois at Chicago, Chicago, IL, USA
| | - Asgerally T Fazleabas
- Department of Obstetrics and Gynecology, University of Illinois at Chicago, Chicago, IL, USA
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