1
|
Lai TH, Chen HT, Wu WB. Trophoblast Coculture Induces Intercellular Adhesion Molecule-1 Expression in Uterine Endometrial Epithelial Cells Through TNF-α Production: Implication of Role of FSH and ICAM-1 during Embryo Implantation. J Reprod Immunol 2022; 152:103650. [DOI: 10.1016/j.jri.2022.103650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 04/04/2022] [Accepted: 06/01/2022] [Indexed: 11/27/2022]
|
2
|
Yoshihara M, Mizutani S, Kato Y, Matsumoto K, Mizutani E, Mizutani H, Fujimoto H, Osuka S, Kajiyama H. Recent Insights into Human Endometrial Peptidases in Blastocyst Implantation via Shedding of Microvesicles. Int J Mol Sci 2021; 22:13479. [PMID: 34948276 PMCID: PMC8708926 DOI: 10.3390/ijms222413479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/02/2021] [Accepted: 12/14/2021] [Indexed: 12/13/2022] Open
Abstract
Blastocyst implantation involves multiple interactions with numerous molecules expressed in endometrial epithelial cells (EECs) during the implantation window; however, there is limited information regarding the molecular mechanism underlying the crosstalk. In blastocysts, fibronectin plays a major role in the adhesion of various types of cells by binding to extracellular matrix proteins via the Arg-Gly-Asp (RGD) motif. In EECs, RGD-recognizing integrins are important bridging receptors for fibronectin, whereas the non-RGD binding of fibronectin includes interactions with dipeptidyl peptidase IV (DPPIV)/cluster of differentiation (CD) 26. Fibronectin may also bind to aminopeptidase N (APN)/CD13, and in the endometrium, these peptidases are present in plasma membranes and lysosomal membranes. Blastocyst implantation is accompanied by lysosome exocytosis, which transports various peptidases and nutrients into the endometrial cavity to facilitate blastocyst implantation. Both DPPIV and APN are released into the uterine cavity via shedding of microvesicles (MVs) from EECs. Recently, extracellular vesicles derived from endometrial cells have been proposed to act on trophectoderm cells to promote implantation. MVs are also secreted from embryonal stem cells and may play an active role in implantation. Thus, crosstalk between the blastocyst and endometrium via extracellular vesicles is a new insight into the fundamental molecular basis of blastocyst implantation.
Collapse
Affiliation(s)
- Masato Yoshihara
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan; (H.M.); (H.F.); (S.O.); (H.K.)
| | - Shigehiko Mizutani
- Daiyabilding Lady’s Clinic, 1-1-17 Meieki, Nishi-ku, Nagoya 451-0045, Japan;
| | - Yukio Kato
- Department of Molecular Pharmacotherapeutics, Faculty of Pharmacy, Kanazawa University, Kanazawa 920-1192, Japan;
| | - Kunio Matsumoto
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa 920-1192, Japan;
| | - Eita Mizutani
- Daiyabilding Lady’s Clinic, 1-1-17 Meieki, Nishi-ku, Nagoya 451-0045, Japan;
| | - Hidesuke Mizutani
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan; (H.M.); (H.F.); (S.O.); (H.K.)
| | - Hiroki Fujimoto
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan; (H.M.); (H.F.); (S.O.); (H.K.)
- Discipline of Obstetrics and Gynaecology, Adelaide Medical School, Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia
| | - Satoko Osuka
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan; (H.M.); (H.F.); (S.O.); (H.K.)
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya 466-8550, Japan; (H.M.); (H.F.); (S.O.); (H.K.)
| |
Collapse
|
3
|
Heng S, Samarajeewa N, Aberkane A, Essahib W, Van de Velde H, Scelwyn M, Hull ML, Vollenhoven B, Rombauts LJ, Nie G. Podocalyxin inhibits human embryo implantation in vitro and luminal podocalyxin in putative receptive endometrium is associated with implantation failure in fertility treatment. Fertil Steril 2021; 116:1391-1401. [PMID: 34272065 DOI: 10.1016/j.fertnstert.2021.06.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/10/2021] [Accepted: 06/15/2021] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To study whether endometrial epithelial podocalyxin (PCX) inhibits implantation of human embryos in vitro and in patients undergoing in vitro fertilization (IVF). DESIGN We have recently identified PCX as a key negative regulator of endometrial epithelial receptivity. Podocalyxin is expressed in all epithelial cells in the nonreceptive endometrium, but is selectively downregulated in the luminal epithelium (LE) for receptivity. In the current study, we first investigated whether high levels of PCX in Ishikawa monolayer inhibit attachment and/or penetration of human blastocysts in in vitro models. We then examined PCX by immunohistochemistry in putative receptive endometrial tissues biopsied from 81 IVF patients who underwent frozen embryo transfer in the next natural cycle and retrospectively analyzed the association between PCX staining in LE and clinical pregnancy as a proxy of successful implantation. SETTING RMIT University, Australia; Vrije Universiteit Brussel, Belgium. PATIENT(S) In vitro fertilization patients undergoing frozen/thawed embryo transfer. INTERVENTION(S) N/A. MAIN OUTCOME MEASURE(S) Endometrial epithelial PCX inhibits implantation of human embryos in vitro and in IVF patients. RESULT(S) High levels of PCX in Ishikawa monolayer significantly inhibited blastocyst attachment and penetration. Among the 81 putative receptive tissues, 73% were negative, but 27% were heterogeneously positive for PCX in LE. The clinical pregnancy rate was 53% in those with a PCX-negative LE but only 18% in those with a PCX-positive LE. If LE was positive for PCX, the odds ratio of no clinical pregnancy was 4.95 (95% Confidence interval, 1.48-14.63). CONCLUSION(S) Podocalyxin inhibits embryo implantation. Assessment of PCX may aid the evaluation and optimization of endometrial receptivity in fertility treatment.
Collapse
Affiliation(s)
- Sophea Heng
- School of Health and Biomedical Sciences, Royal Melbourne Institute of Technology University, Victoria, Australia
| | - Nirukshi Samarajeewa
- School of Health and Biomedical Sciences, Royal Melbourne Institute of Technology University, Victoria, Australia
| | - Asma Aberkane
- Research Group of Reproduction and Immunology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Wafaa Essahib
- Research Group of Reproduction and Immunology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Hilde Van de Velde
- Research Group of Reproduction and Immunology, Vrije Universiteit Brussel, Brussels, Belgium
| | | | - M Louise Hull
- Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - Beverley Vollenhoven
- Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia; Womens and Newborn Programme, Monash Health, Clayton, Victoria, Australia
| | - Luk J Rombauts
- Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia; Womens and Newborn Programme, Monash Health, Clayton, Victoria, Australia
| | - Guiying Nie
- School of Health and Biomedical Sciences, Royal Melbourne Institute of Technology University, Victoria, Australia; Hudson Institute of Medical Research, Clayton, Victoria, Australia.
| |
Collapse
|
4
|
Paule SG, Heng S, Samarajeewa N, Li Y, Mansilla M, Webb AI, Nebl T, Young SL, Lessey BA, Hull ML, Scelwyn M, Lim R, Vollenhoven B, Rombauts LJ, Nie G. Podocalyxin is a key negative regulator of human endometrial epithelial receptivity for embryo implantation. Hum Reprod 2021; 36:1353-1366. [PMID: 33822049 DOI: 10.1093/humrep/deab032] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 12/09/2020] [Indexed: 02/02/2023] Open
Abstract
STUDY QUESTION How is endometrial epithelial receptivity, particularly adhesiveness, regulated at the luminal epithelial surface for embryo implantation in the human? SUMMARY ANSWER Podocalyxin (PCX), a transmembrane protein, was identified as a key negative regulator of endometrial epithelial receptivity; specific downregulation of PCX in the luminal epithelium in the mid-secretory phase, likely mediated by progesterone, may act as a critical step in converting endometrial surface from a non-receptive to an implantation-permitting state. WHAT IS KNOWN ALREADY The human endometrium must undergo major molecular and cellular changes to transform from a non-receptive to a receptive state to accommodate embryo implantation. However, the fundamental mechanisms governing receptivity, particularly at the luminal surface where the embryo first interacts with, are not well understood. A widely held view is that upregulation of adhesion-promoting molecules is important, but the details are not well characterized. STUDY DESIGN, SIZE, DURATION This study first aimed to identify novel adhesion-related membrane proteins with potential roles in receptivity in primary human endometrial epithelial cells (HEECs). Further experiments were then conducted to determine candidates' in vivo expression pattern in the human endometrium across the menstrual cycle, regulation by progesterone using cell culture, and functional importance in receptivity using in vitro human embryo attachment and invasion models. PARTICIPANTS/MATERIALS, SETTING, METHODS Primary HEECs (n = 9) were isolated from the proliferative phase endometrial tissue, combined into three pools, subjected to plasma membrane protein enrichment by ultracentrifugation followed by proteomics analysis, which led to the discovery of PCX as a novel candidate of interest. Immunohistochemical analysis determined the in vivo expression pattern and cellular localization of PCX in the human endometrium across the menstrual cycle (n = 23). To investigate whether PCX is regulated by progesterone, the master driver of endometrial differentiation, primary HEECs were treated in culture with estradiol and progesterone and analyzed by RT-PCR (n = 5) and western blot (n = 4). To demonstrate that PCX acts as a negative regulator of receptivity, PCX was overexpressed in Ishikawa cells (a receptive line) and the impact on receptivity was determined using in vitro attachment (n = 3-5) and invasion models (n = 4-6), in which an Ishikawa monolayer mimicked the endometrial surface and primary human trophoblast spheroids mimicked embryos. Mann-Whitney U-test and ANOVA analyses established statistical significance at *P ≤ 0.05 and **P ≤ 0.01. MAIN RESULTS AND THE ROLE OF CHANCE PCX was expressed on the apical surface of all epithelial and endothelial cells in the non-receptive endometrium, but selectively downregulated in the luminal epithelium from the mid-secretory phase coinciding with the establishment of receptivity. Progesterone was confirmed to be able to suppress PCX in primary HEECs, suggesting this hormone likely mediates the downregulation of luminal PCX in vivo for receptivity. Overexpression of PCX in Ishikawa monolayer inhibited not only the attachment but also the penetration of human embryo surrogates, demonstrating that PCX acts as an important negative regulator of epithelial receptivity for implantation. LIMITATIONS, REASONS FOR CAUTION Primary HEECs isolated from the human endometrial tissue contained a mixture of luminal and glandular epithelial cells, as further purification into subtypes was not possible due to the lack of specific markers. Future study would need to investigate how progesterone differentially regulates PCX in endometrial epithelial subtypes. In addition, this study used primary human trophoblast spheroids as human embryo mimics and Ishikawa as endometrial epithelial cells in functional models, future studies with human blastocysts and primary epithelial cells would further validate the findings. WIDER IMPLICATIONS OF THE FINDINGS The findings of this study add important new knowledge to the understanding of human endometrial remodeling for receptivity. The identification of PCX as a negative regulator of epithelial receptivity and the knowledge that its specific downregulation in the luminal epithelium coincides with receptivity development may provide new avenues to assess endometrial receptivity and individualize endometrial preparation protocols in assisted reproductive technology (ART). The study also discovered PCX as progesterone target in HEECs, identifying a potentially useful functional biomarker to monitor progesterone action, such as in the optimization of progesterone type/dose/route of administration for luteal support. STUDY FUNDING/COMPETING INTEREST(S) Study funding was obtained from ESHRE, Monash IVF and NHMRC. LR reports potential conflict of interests (received grants from Ferring Australia; personal fees from Monash IVF Group and Ferring Australia; and non-financial support from Merck Serono, MSD, and Guerbet outside the submitted work. LR is also a minority shareholder and the Group Medical Director for Monash IVF Group, a provider of fertility preservation services). The remaining authors have no potential conflict of interest to declare. TRIAL REGISTRATION NUMBER NA.
Collapse
Affiliation(s)
- Sarah G Paule
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia
| | - Sophea Heng
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, VIC, Australia
| | - Nirukshi Samarajeewa
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, VIC, Australia
| | - Ying Li
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, VIC, Australia
| | - Mary Mansilla
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, VIC, Australia
| | - Andrew I Webb
- Advance Technology and Biology Division, The Walter and Eliza Hall Institute, Parkville, VIC, Australia
| | - Thomas Nebl
- Advance Technology and Biology Division, The Walter and Eliza Hall Institute, Parkville, VIC, Australia
| | - Steven L Young
- Department of Obstetrics and Gynecology, University of North Carolina, Chapel Hill, NC, USA
| | - Bruce A Lessey
- Department of Obstetrics and Gynecology, Greenville Health System, Greenville, SC, USA
| | - M Louise Hull
- The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | | | - Rebecca Lim
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC, Australia
| | - Beverley Vollenhoven
- Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC, Australia.,Womens and Newborn Programme, Monash Health, Clayton, VIC, Australia
| | - Luk J Rombauts
- Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC, Australia.,Womens and Newborn Programme, Monash Health, Clayton, VIC, Australia
| | - Guiying Nie
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, VIC, Australia
| |
Collapse
|
5
|
Wang Y, Lim R, Nie G. HtrA4 may play a major role in inhibiting endothelial repair in pregnancy complication preeclampsia. Sci Rep 2019; 9:2728. [PMID: 30804477 PMCID: PMC6389976 DOI: 10.1038/s41598-019-39565-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 01/15/2019] [Indexed: 12/03/2022] Open
Abstract
Preeclampsia (PE) is a life-threatening complication of human pregnancy with no effective treatment other than premature delivery. It is hallmarked by systemic endothelial injury/dysfunction which is believed to be caused by abnormal levels/types of placenta-derived factors that are circulating in the maternal blood. Emerging evidence suggests that endothelial repair is also dysregulated in PE, as circulating endothelial progenitor cells (EPCs) critical for endothelial regeneration are reduced in number and functionality. However, the underlying mechanisms are poorly understood. HtrA4 is a placenta-specific protease that is secreted into the circulation and significantly elevated in early-onset PE. Here we investigated the impact of HtrA4 on endothelial proliferation and repair. We demonstrated that high levels of HtrA4 halted endothelial cell proliferation and significantly down-regulated a number of genes that are critical for cell cycle progression, including CDKN3, BIRC5, CDK1 and MKI67. Furthermore, HtrA4 significantly inhibited the proliferation of primary EPCs isolated from term human umbilical cord blood and impeded their differentiation into mature endothelial cells. Our data thus suggests that elevated levels of HtrA4 in the early-onset PE circulation may impair endothelial cell repair, not only by halting endothelial cell proliferation, but also by inhibiting the proliferation and differentiation of circulating EPCs.
Collapse
Affiliation(s)
- Yao Wang
- Implantation and Placental Development Laboratory, Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Victoria, 3168, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Victoria, 3800, Australia
| | - Rebecca Lim
- Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, 3168, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, 3168, Australia
| | - Guiying Nie
- Implantation and Placental Development Laboratory, Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Victoria, 3168, Australia. .,Department of Molecular and Translational Science, Monash University, Clayton, Victoria, 3800, Australia. .,Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, 3800, Australia.
| |
Collapse
|
6
|
Yu SH, Zhao P, Prabhakar PK, Sun T, Beedle A, Boons GJ, Moremen KW, Wells L, Steet R. Defective mucin-type glycosylation on α-dystroglycan in COG-deficient cells increases its susceptibility to bacterial proteases. J Biol Chem 2018; 293:14534-14544. [PMID: 30049793 DOI: 10.1074/jbc.ra118.003014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 07/16/2018] [Indexed: 12/11/2022] Open
Abstract
Deficiency in subunits of the conserved oligomeric Golgi (COG) complex results in pleiotropic defects in glycosylation and causes congenital disorders in humans. Insight regarding the functional consequences of this defective glycosylation and the identity of specific glycoproteins affected is lacking. A chemical glycobiology strategy was adopted to identify the surface glycoproteins most sensitive to altered glycosylation in COG-deficient Chinese hamster ovary (CHO) cells. Following metabolic labeling, an unexpected increase in GalNAz incorporation into several glycoproteins, including α-dystroglycan (α-DG), was noted in cog1-deficient ldlB cells. Western blotting analysis showed a significantly lower molecular weight for α-DG in ldlB cells compared with WT CHO cells. The underglycosylated α-DG molecules on ldlB cells are highly vulnerable to bacterial proteases that co-purify with V. cholerae neuraminidase, leading to rapid removal of the protein from the cell surface. The purified bacterial mucinase StcE can cleave both WT and ldlB α-DG but did not cause rapid degradation of the fragments, implicating other V. cholerae proteases in the final proteolysis of the fragments. Extending terminal glycosylation on the existing mucin-type glycans of ldlB α-DG stabilized the resulting fragments, indicating that fragment stability, but not the initial fragmentation of the protein, is influenced by the glycosylation status of the cell. This discovery highlights a functional importance for mucin-type O-glycans found on α-DG and reinforces a growing role for these glycans as regulators of extracellular proteolysis and protein stability.
Collapse
Affiliation(s)
- Seok-Ho Yu
- From the Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - Peng Zhao
- From the Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - Pradeep K Prabhakar
- From the Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - Tiantian Sun
- From the Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - Aaron Beedle
- From the Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - Geert-Jan Boons
- From the Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - Kelley W Moremen
- From the Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - Lance Wells
- From the Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - Richard Steet
- From the Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| |
Collapse
|
7
|
Gioia M, Fasciglione GF, Sbardella D, Sciandra F, Casella M, Camerini S, Crescenzi M, Gori A, Tarantino U, Cozza P, Brancaccio A, Coletta M, Bozzi M. The enzymatic processing of α-dystroglycan by MMP-2 is controlled by two anchoring sites distinct from the active site. PLoS One 2018; 13:e0192651. [PMID: 29447293 PMCID: PMC5813964 DOI: 10.1371/journal.pone.0192651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/26/2018] [Indexed: 11/19/2022] Open
Abstract
Dystroglycan (DG) is a membrane receptor, belonging to the dystrophin-glycoprotein complex (DGC) and formed by two subunits, α-dystroglycan (α-DG) and β-dystroglycan (β -DG). The C-terminal domain of α-DG and the N-terminal extracellular domain of β -DG are connected, providing a link between the extracellular matrix and the cytosol. Under pathological conditions, such as cancer and muscular dystrophies, DG may be the target of metalloproteinases MMP-2 and MMP-9, contributing to disease progression. Previously, we reported that the C-terminal domain α-DG (483–628) domain is particularly susceptible to the catalytic activity of MMP-2; here we show that the α-DG 621–628 region is required to carry out its complete digestion, suggesting that this portion may represent a MMP-2 anchoring site. Following this observation, we synthesized an α-DG based-peptide, spanning the (613–651) C-terminal region. The analysis of the kinetic and thermodynamic parameters of the whole and the isolated catalytic domain of MMP-2 (cdMMP-2) has shown its inhibitory properties, indicating the presence of (at least) two binding sites for the peptide, both located within the catalytic domain, only one of the two being topologically distinct from the catalytic active groove. However, the different behavior between whole MMP-2 and cdMMP-2 envisages the occurrence of an additional binding site for the peptide on the hemopexin-like domain of MMP-2. Interestingly, mass spectrometry analysis has shown that α-DG (613–651) peptide is cleavable even though it is a very poor substrate of MMP-2, a feature that renders this molecule a promising template for developing a selective MMP-2 inhibitor.
Collapse
Affiliation(s)
- Magda Gioia
- Department of Clinical Sciences and Translational Medicine, University of Roma Tor Vergata, Roma, Italy
- CIRCMSB, Bari, Italy
- * E-mail: (MG); (MB)
| | - Giovanni Francesco Fasciglione
- Department of Clinical Sciences and Translational Medicine, University of Roma Tor Vergata, Roma, Italy
- CIRCMSB, Bari, Italy
| | - Diego Sbardella
- Department of Clinical Sciences and Translational Medicine, University of Roma Tor Vergata, Roma, Italy
- CIRCMSB, Bari, Italy
| | | | | | | | | | | | - Umberto Tarantino
- Department of Clinical Sciences and Translational Medicine, University of Roma Tor Vergata, Roma, Italy
| | - Paola Cozza
- Department of Clinical Sciences and Translational Medicine, University of Roma Tor Vergata, Roma, Italy
| | - Andrea Brancaccio
- CNR Institute for Molecular Recognition, Roma Italy
- School of Biochemistry, University of Bristol, Bristol, United Kingdom
| | - Massimo Coletta
- Department of Clinical Sciences and Translational Medicine, University of Roma Tor Vergata, Roma, Italy
- CIRCMSB, Bari, Italy
| | - Manuela Bozzi
- CNR Institute for Molecular Recognition, Roma Italy
- Institute of Biochemistry and Clinical Biochemistry, Catholic University, Roma Italy
- * E-mail: (MG); (MB)
| |
Collapse
|
8
|
Abstract
At implantation, with the acquisition of a receptive phenotype in the uterine epithelium, an initial tenuous attachment of embryonic trophectoderm initiates reorganisation of epithelial polarity to enable stable embryo attachment and the differentiation of invasive trophoblasts. In this Cell Science at a Glance article, we describe cellular and molecular events during the epithelial phase of implantation in rodent, drawing on morphological studies both in vivo and in vitro, and genetic models. Evidence is emerging for a repertoire of transcription factors downstream of the master steroidal regulators estrogen and progesterone that coordinate alterations in epithelial polarity, delivery of signals to the stroma and epithelial cell death or displacement. We discuss what is known of the cell interactions that occur during implantation, before considering specific adhesion molecules. We compare the rodent data with our much more limited knowledge of the human system, where direct mechanistic evidence is hard to obtain. In the accompanying poster, we represent the embryo-epithelium interactions in humans and laboratory rodents, highlighting similarities and differences, as well as depict some of the key cell biological events that enable interstitial implantation to occur.
Collapse
Affiliation(s)
- John D Aplin
- Maternal and Fetal Health Research Group, Manchester Academic Health Sciences Centre, St Mary's Hospital, University of Manchester, Manchester M13 9WL, UK
| | - Peter T Ruane
- Maternal and Fetal Health Research Group, Manchester Academic Health Sciences Centre, St Mary's Hospital, University of Manchester, Manchester M13 9WL, UK
| |
Collapse
|
9
|
Covaceuszach S, Bozzi M, Bigotti MG, Sciandra F, Konarev PV, Brancaccio A, Cassetta A. Structural flexibility of human α-dystroglycan. FEBS Open Bio 2017; 7:1064-1077. [PMID: 28781947 PMCID: PMC5537065 DOI: 10.1002/2211-5463.12259] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 06/09/2017] [Indexed: 01/13/2023] Open
Abstract
Dystroglycan (DG), composed of α and β subunits, belongs to the dystrophin-associated glycoprotein complex. α-DG is an extracellular matrix protein that undergoes a complex post-translational glycosylation process. The bifunctional glycosyltransferase like-acetylglucosaminyltransferase (LARGE) plays a crucial role in the maturation of α-DG, enabling its binding to laminin. We have already structurally analyzed the N-terminal region of murine α-DG (α-DG-Nt) and of a pathological single point mutant that may affect recognition of LARGE, although the structural features of the potential interaction between LARGE and DG remain elusive. We now report on the crystal structure of the wild-type human α-DG-Nt that has allowed us to assess the reliability of our murine crystallographic structure as a α-DG-Nt general model. Moreover, we address for the first time both structures in solution. Interestingly, small-angle X-ray scattering (SAXS) reveals the existence of two main protein conformations ensembles. The predominant species is reminiscent of the crystal structure, while the less populated one assumes a more extended fold. A comparative analysis of the human and murine α-DG-Nt solution structures reveals that the two proteins share a common interdomain flexibility and population distribution of the two conformers. This is confirmed by the very similar stability displayed by the two orthologs as assessed by biochemical and biophysical experiments. These results highlight the need to take into account the molecular plasticity of α-DG-Nt in solution, as it can play an important role in the functional interactions with other binding partners.
Collapse
Affiliation(s)
| | - Manuela Bozzi
- Istituto di Biochimica e Biochimica ClinicaUniversità Cattolica del Sacro CuoreRomaItaly
- Istituto di Chimica del Riconoscimento MolecolareCNR c/o Università Cattolica del Sacro CuoreRomaItaly
| | | | - Francesca Sciandra
- Istituto di Chimica del Riconoscimento MolecolareCNR c/o Università Cattolica del Sacro CuoreRomaItaly
| | - Petr Valeryevich Konarev
- Shubnikov Institute of Crystallography of Federal Scientific Research Centre“Crystallography and Photonics” of Russian Academy of SciencesMoscowRussia
- National Research Centre “Kurchatov Institute”MoscowRussia
| | - Andrea Brancaccio
- Istituto di Chimica del Riconoscimento MolecolareCNR c/o Università Cattolica del Sacro CuoreRomaItaly
- School of BiochemistryUniversity of BristolUK
| | | |
Collapse
|
10
|
Heng S, Evans J, Salamonsen LA, Jobling TW, Nie G. The significance of post-translational removal of α-DG-N in early stage endometrial cancer development. Oncotarget 2017; 8:81942-81952. [PMID: 29137235 PMCID: PMC5669861 DOI: 10.18632/oncotarget.17286] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 04/11/2017] [Indexed: 01/11/2023] Open
Abstract
Endometrial cancer is one of the most common gynecological malignancies affecting post-menopausal women, yet the underlying mechanisms are not well understood. Dystroglycan (DG) is a large glycoprotein, consisting of α- and β-subunits that are non-covalently associated with each other. Modifications to α-DG have been linked to a variety of cancers, where the N-terminus of α-DG (α-DG-N) is post-translationally removed by a furin-like enzyme. However, the functional significance of α-DG-N removal is unknown. Our previous studies have established that the α-DG cleavage enzyme furin is significantly up-regulated in endometrial cancer. This study aimed to investigate the importance of α-DG-N removal in post-menopausal endometrial cancer. We demonstrated that α-DG-N removal predominantly occurred in early stage endometrial cancer tissues, and that the cleaved α-DG-N was significantly elevated in the uterine lavage of early grade endometrial cancer patients. Furthermore, α-DG-N removal significantly decreased the tight junction integrity and polarity of the endometrial epithelial cells, promoting the loss of polarity markers scribble and atypical protein kinase C (aPKC) and reducing the trans-epithelial electrical resistance. The removal of α-DG-N also sensitized the cells for estrogen-dependent proliferation. These results strongly suggest that α-DG-N removal plays an important role in early stage development of endometrial cancer, and that the elevated levels of α-DG-N in uterine fluid may provide a biomarker for early detection of endometrial cancer.
Collapse
Affiliation(s)
- Sophea Heng
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia
| | - Jemma Evans
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria, Australia.,Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia
| | - Lois A Salamonsen
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria, Australia.,Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia
| | - Tom W Jobling
- Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia.,Epworth Research Institute, Epworth Health Care, Richmond, Victoria, Australia
| | - Guiying Nie
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia
| |
Collapse
|
11
|
Brancaccio A, Adams JC. An evaluation of the evolution of the gene structure of dystroglycan. BMC Res Notes 2017; 10:19. [PMID: 28057052 PMCID: PMC5216574 DOI: 10.1186/s13104-016-2322-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Accepted: 12/06/2016] [Indexed: 11/10/2022] Open
Abstract
Background Dystroglycan (DG) is an adhesion receptor complex composed of two non-covalently associated subunits, transcribed from a single gene. The extracellular α-DG is highly and heterogeneously glycosylated and binds with high affinity to laminins, and the transmembrane β-DG binds intracellular dystrophin. Multiple cellular functions have been proposed for DG, notwithstanding that its role in skeletal muscle appears central as demonstrated by both primary and secondary severe muscular dystrophic phenotypes collectively known as dystroglycanopathies. We recently analysed the molecular phylogeny of the DG core protein and identified the α/β interface, transmembrane and cytoplasmic domains of β-DG as the most conserved region. It was also identified that the IG2_MAT_NU region has been independently duplicated in multiple lineages. Results To understand the evolution of dystroglycan in more depth, we investigated dystroglycan gene structure in 35 species representative of the phyla in which dystroglycan has been identified (i.e., all metazoan phyla except Ctenophora). The gene structure of three exons and two introns is remarkably conserved. However, additional lineage-specific introns were identified, which interrupt the coding sequence at distinct points, were identified in multiple metazoan groups, most prominently in ecdysozoans. Conclusions A coding DNA sequence (CDS) intron that interrupts the encoding of the IG1 domain is universally conserved and this intron is longer in gnathostomes (jawed vertebrates) than in other metazoans. Lineage-specific gain of additional introns has occurred notably in ecdysozoans, where multiple introns interrupt the large 3′ exon. More limited intron gain has also occurred in placozoa, cnidarians, urochordates and the DG paralogues of lamprey and teleost fish. Electronic supplementary material The online version of this article (doi:10.1186/s13104-016-2322-x) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Andrea Brancaccio
- Istituto di Chimica del Riconoscimento Molecolare, CNR, Istituto di Biochimica e Biochimica Clinica, Università Cattolica del Sacro Cuore, L.go F. Vito 1, 00168, Rome, Italy. .,School of Biochemistry, University of Bristol, Biomedical Sciences Building, University Walk, Bristol, BS8 1TD, UK.
| | - Josephine C Adams
- School of Biochemistry, University of Bristol, Biomedical Sciences Building, University Walk, Bristol, BS8 1TD, UK
| |
Collapse
|
12
|
Evans J, Salamonsen LA, Winship A, Menkhorst E, Nie G, Gargett CE, Dimitriadis E. Fertile ground: human endometrial programming and lessons in health and disease. Nat Rev Endocrinol 2016; 12:654-667. [PMID: 27448058 DOI: 10.1038/nrendo.2016.116] [Citation(s) in RCA: 181] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The human endometrium is a highly dynamic tissue that is cyclically shed, repaired, regenerated and remodelled, primarily under the orchestration of oestrogen and progesterone, in preparation for embryo implantation. Humans are among the very few species that menstruate and that, consequently, are equipped with unique cellular and molecular mechanisms controlling these cyclic processes. Many reproductive pathologies are specific to menstruating species, and studies in animal models rarely translate to humans. Abnormal remodelling and regeneration of the human endometrium leads to a range of reproductive complications. Furthermore, the processes regulating endometrial remodelling and implantation, including those controlling hormonal impact, breakdown and repair, stem/progenitor cell activation, inflammation and cell invasion have broad applications to other fields. This Review presents current knowledge regarding the normal and abnormal function of the human endometrium. The development of biomarkers for prediction of uterine diseases and pregnancy disorders and future avenues of investigation to improve fertility and enhance endometrial function are also discussed.
Collapse
Affiliation(s)
- Jemma Evans
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, 3168, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, 3800, Australia
- Department of Physiology, Monash University, Clayton, 3800, Australia
| | - Lois A Salamonsen
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, 3168, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, 3800, Australia
- Department of Obstetrics and Gynaecology, Monash University, Clayton, 3800, Australia
| | - Amy Winship
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, 3168, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, 3800, Australia
| | - Ellen Menkhorst
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, 3168, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, 3800, Australia
| | - Guiying Nie
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, 3168, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, 3800, Australia
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, 3800, Australia
| | - Caroline E Gargett
- Department of Obstetrics and Gynaecology, Monash University, Clayton, 3800, Australia
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, 3168, Australia
| | - Eva Dimitriadis
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, 3168, Australia
- Department of Molecular and Translational Medicine, Monash University, Clayton, 3800, Australia
- Department of Anatomy and Developmental Biology, Monash University, Clayton, 3800, Australia
| |
Collapse
|
13
|
Nguyen HPT, Simpson RJ, Salamonsen LA, Greening DW. Extracellular Vesicles in the Intrauterine Environment: Challenges and Potential Functions. Biol Reprod 2016; 95:109. [PMID: 27655784 PMCID: PMC5333933 DOI: 10.1095/biolreprod.116.143503] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 08/08/2016] [Accepted: 09/13/2016] [Indexed: 01/07/2023] Open
Abstract
Extracellular vesicles (EVs), including exosomes (30–150 nm) and microvesicles (100–1500 nm), play important roles in mediating cell-cell communication. Such particles package distinct cargo elements, including lipids, proteins, mRNAs, microRNAs, and DNA, that vary depending on the cell of origin and its phenotype. This cargo can be horizontally transferred to target cells where its components can reprogram the recipient cell to modify its function. EVs have been identified within the uterine cavity of women, sheep, and mice, where they contribute to the microenvironment of sperm transport, and of blastocyst and endometrial preparation for implantation. It is likely that exosomes and microvesicles carry different cargo and coordinate different roles in this intrauterine environment. Understanding and defining these subtypes of EVs is important for future functional studies and clinical translation. Here we critically review the various purification and validation procedures for extracellular vesicle analysis and discuss what is known of endometrial-derived exosome cargo and of their hormonal regulation. The current knowledge of the functions of uterine exosomes, with respect to sperm transport and function, and of their actions on trophectodermal cells to promote implantation are summarized and evaluated in their physiological context. Given the potential importance of this form of cell-cell interactions within the reproductive tract, the critical issues discussed will guide new insights in this rapidly expanding field.
Collapse
Affiliation(s)
- Hong P T Nguyen
- Hudson Institute of Medical Research (previously Prince Henry's Institute), Clayton, Victoria, Australia
| | - Richard J Simpson
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - Lois A Salamonsen
- Hudson Institute of Medical Research (previously Prince Henry's Institute), Clayton, Victoria, Australia
| | - David W Greening
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| |
Collapse
|
14
|
Salamonsen LA, Evans J, Nguyen HPT, Edgell TA. The Microenvironment of Human Implantation: Determinant of Reproductive Success. Am J Reprod Immunol 2015; 75:218-25. [PMID: 26661899 DOI: 10.1111/aji.12450] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 10/16/2015] [Indexed: 11/28/2022] Open
Abstract
Successful implantation requires synchronous development of embryo and endometrium. Endometrial receptivity results from progesterone-induced differentiation of endometrial cells, generally achieved during the mid-secretory phase of the cycle. Failure to properly develop receptivity results in failed or inadequate implantation and hence no ongoing pregnancy. The blastocyst undergoes final development, apposition, attachment and initiates invasion of the endometrial epithelium within the uterine cavity. Thus, the microenvironment provided by uterine fluid, particularly glandular secretions, is essential for implantation. Analysis of endometrial fluid has identified cytokines, chemokines, proteases, antiproteases and other factors that modulate blastocyst functions relevant to implantation. Exosomes/microvesicular bodies released from the endometrium (and likely also the embryo) are present in uterine fluid. These can transfer miRNA, proteins and lipids between cells, thus providing endometrial-embryo communication in the peri-implantation period. Understanding the uterine microenvironment, and its effects on endometrial-embryo interactions, will provide opportunities to modify current infertility treatments to improve success rates.
Collapse
Affiliation(s)
| | - Jemma Evans
- Hudson Institute of Medical Research, Clayton, Vic., Australia
| | - Hong P T Nguyen
- Hudson Institute of Medical Research, Clayton, Vic., Australia
| | - Tracey A Edgell
- Hudson Institute of Medical Research, Clayton, Vic., Australia
| |
Collapse
|
15
|
Heng S, Vollenhoven B, Rombauts LJ, Nie G. A High-Throughput Assay for the Detection of α-Dystroglycan N-Terminus in Human Uterine Fluid to Determine Uterine Receptivity. ACTA ACUST UNITED AC 2015; 21:408-13. [PMID: 26637554 DOI: 10.1177/1087057115619127] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 11/02/2015] [Indexed: 11/15/2022]
Abstract
Embryo implantation requires a healthy embryo and a receptive uterus. In women, the uterus remains a hostile environment and must undergo functional changes to convert to a receptive state for embryo implantation. Determining uterine receptivity is vital in IVF treatment, as the timing of embryo transfer needs to be synchronized with uterine receptivity. However, to date, no reliable biochemical tests are available to determine uterine receptivity. We recently established that removal of α-dystroglycan N-terminus (α-DG-N) from the uterine surface plays an important role in the establishment of uterine receptivity. Importantly, the α-DG-N removed from the uterine tissue enters into the uterine fluid, and the levels correlate with the tissue status of receptivity. Detection of α-DG-N in uterine fluid may therefore provide a nonsurgical approach to assess uterine receptivity. In this study, we first validated three monoclonal antibodies raised against α-DG-N in our system, and then established a sandwich ELISA suitable for the detection of α-DG-N in human uterine fluid. This ELISA detected significantly higher concentrations of α-DG-N in uterine fluid of women in the receptive phase. We believe this newly established α-DG-N ELISA may provide an important tool in the development of noninvasive strategies to detect uterine receptivity in women.
Collapse
Affiliation(s)
- Sophea Heng
- Implantation and Placental Development Laboratory, Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Victoria, Australia Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria, Australia
| | - Beverley Vollenhoven
- Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia Monash IVF, Clayton, Victoria, Australia
| | - Luk J Rombauts
- Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia Monash IVF, Clayton, Victoria, Australia
| | - Guiying Nie
- Implantation and Placental Development Laboratory, Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, Victoria, Australia Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria, Australia
| |
Collapse
|