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Apostolov A, Naydenov M, Kalinina A, Nikolova M, Saare M, Aleksejeva E, Milova N, Milov A, Salumets A, Baev V, Yahubyan G. Endometrial Proliferative Phase-Centered View of Transcriptome Dynamics across the Menstrual Cycle. Int J Mol Sci 2024; 25:5320. [PMID: 38791358 PMCID: PMC11121472 DOI: 10.3390/ijms25105320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/09/2024] [Accepted: 05/11/2024] [Indexed: 05/26/2024] Open
Abstract
The endometrium, the inner mucosal lining of the uterus, undergoes complex molecular and cellular changes across the menstrual cycle in preparation for embryo implantation. Transcriptome-wide analyses have mainly been utilized to study endometrial receptivity, the prerequisite for successful implantation, with most studies, so far, comparing the endometrial transcriptomes between (i) secretory and proliferative endometrium or (ii) mid-secretory and early secretory endometrium. In the current study, we provide a complete transcriptome description of the endometrium across the entire menstrual cycle and, for the first time, comprehensively characterize the proliferative phase of the endometrium. Our temporal transcriptome analysis includes five time points including the mid-proliferative, late proliferative (peri-ovulatory phase), early secretory, mid-secretory, and late secretory phases. Thus, we unveil exhaustively the transitions between the consecutive proliferative and secretory phases, highlighting their unique gene expression profiles and possible distinct biological functions. The transcriptome analysis reveals many differentially expressed genes (DEGs) across the menstrual cycle, most of which are phase-specific. As an example of coordinated gene activity, the expression profile of histone-encoding genes within the HIST cluster on chromosome 6 shows an increase in cluster activity during the late proliferative and a decline during the mid-secretory phase. Moreover, numerous DEGs are shared among all phases. In conclusion, in the current study, we delineate the endometrial proliferative phase-centered view of transcriptome dynamics across the menstrual cycle. Our data analysis highlights significant transcriptomic and functional changes occurring during the late proliferative phase-an essential transition point from the proliferative phase to the secretory phase. Future studies should explore how the biology of the late proliferative phase endometrium impacts the achievement of mid-secretory endometrial receptivity or contributes to molecular aberrations leading to embryo implantation failure.
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Affiliation(s)
- Apostol Apostolov
- Competence Centre on Health Technologies, 50411 Tartu, Estonia; (A.A.); (M.S.); (E.A.); (A.S.)
- Division of Obstetrics and Gynecology, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institute, 17177 Stockholm, Sweden
- Department of Gynecology and Reproductive Medicine, Karolinska University Hospital, 17165 Stockholm, Sweden
| | - Mladen Naydenov
- Department of Human Anatomy and Physiology, Faculty of Biology, University of Plovdiv, 4000 Plovdiv, Bulgaria;
| | | | - Maria Nikolova
- Center for Women’s Health, 4000 Plovdiv, Bulgaria; (M.N.); (N.M.); (A.M.)
- Department of Molecular Biology, Faculty of Biology, University of Plovdiv, 4000 Plovdiv, Bulgaria;
| | - Merli Saare
- Competence Centre on Health Technologies, 50411 Tartu, Estonia; (A.A.); (M.S.); (E.A.); (A.S.)
- Department of Obstetrics and Gynecology, Institute of Clinical Medicine, University of Tartu, 50406 Tartu, Estonia
| | - Elina Aleksejeva
- Competence Centre on Health Technologies, 50411 Tartu, Estonia; (A.A.); (M.S.); (E.A.); (A.S.)
- Department of Obstetrics and Gynecology, Institute of Clinical Medicine, University of Tartu, 50406 Tartu, Estonia
| | - Nadezhda Milova
- Center for Women’s Health, 4000 Plovdiv, Bulgaria; (M.N.); (N.M.); (A.M.)
| | - Antoan Milov
- Center for Women’s Health, 4000 Plovdiv, Bulgaria; (M.N.); (N.M.); (A.M.)
| | - Andres Salumets
- Competence Centre on Health Technologies, 50411 Tartu, Estonia; (A.A.); (M.S.); (E.A.); (A.S.)
- Division of Obstetrics and Gynecology, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institute, 17177 Stockholm, Sweden
- Department of Gynecology and Reproductive Medicine, Karolinska University Hospital, 17165 Stockholm, Sweden
- Department of Obstetrics and Gynecology, Institute of Clinical Medicine, University of Tartu, 50406 Tartu, Estonia
| | - Vesselin Baev
- Department of Molecular Biology, Faculty of Biology, University of Plovdiv, 4000 Plovdiv, Bulgaria;
| | - Galina Yahubyan
- Department of Molecular Biology, Faculty of Biology, University of Plovdiv, 4000 Plovdiv, Bulgaria;
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Altmäe S, Koel M, Võsa U, Adler P, Suhorutšenko M, Laisk-Podar T, Kukushkina V, Saare M, Velthut-Meikas A, Krjutškov K, Aghajanova L, Lalitkumar PG, Gemzell-Danielsson K, Giudice L, Simón C, Salumets A. Meta-signature of human endometrial receptivity: a meta-analysis and validation study of transcriptomic biomarkers. Sci Rep 2017; 7:10077. [PMID: 28855728 PMCID: PMC5577343 DOI: 10.1038/s41598-017-10098-3] [Citation(s) in RCA: 146] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 07/28/2017] [Indexed: 12/21/2022] Open
Abstract
Previous transcriptome studies of the human endometrium have revealed hundreds of simultaneously up- and down-regulated genes that are involved in endometrial receptivity. However, the overlap between the studies is relatively small, and we are still searching for potential diagnostic biomarkers. Here we perform a meta-analysis of endometrial-receptivity associated genes on 164 endometrial samples (76 from 'pre-receptive' and 88 from mid-secretory, 'receptive' phase endometria) using a robust rank aggregation (RRA) method, followed by enrichment analysis, and regulatory microRNA prediction. We identify a meta-signature of endometrial receptivity involving 57 mRNA genes as putative receptivity markers, where 39 of these we confirm experimentally using RNA-sequencing method in two separate datasets. The meta-signature genes highlight the importance of immune responses, the complement cascade pathway and the involvement of exosomes in mid-secretory endometrial functions. Bioinformatic prediction identifies 348 microRNAs that could regulate 30 endometrial-receptivity associated genes, and we confirm experimentally the decreased expression of 19 microRNAs with 11 corresponding up-regulated meta-signature genes in our validation experiments. The 57 identified meta-signature genes and involved pathways, together with their regulatory microRNAs could serve as promising and sought-after biomarkers of endometrial receptivity, fertility and infertility.
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Affiliation(s)
- Signe Altmäe
- Department of Women's and Children's Health, Division of Obstetrics and Gynecology, Karolinska Institutet, and Karolinska University Hospital, 17176, Stockholm, Sweden.
- Competence Centre on Health Technologies, 50410, Tartu, Estonia.
- Department of Biochemistry and Molecular Biology, Faculty of Sciences, University of Granada, 18016, Granada, Spain.
| | - Mariann Koel
- Competence Centre on Health Technologies, 50410, Tartu, Estonia
- Department of Biosciences and Nutrition, and Center for Innovative Medicine, Karolinska Institutet, 14183, Huddinge, Sweden
- Department of Cell Biology, Institute of Molecular and Cell Biology, University of Tartu, 51010, Tartu, Estonia
| | - Urmo Võsa
- Estonian Genome Center, University of Tartu, 51010, Tartu, Estonia
| | - Priit Adler
- Institute of Computer Science, University of Tartu, Tartu, 50409, Estonia
| | - Marina Suhorutšenko
- Competence Centre on Health Technologies, 50410, Tartu, Estonia
- Department of Obstetrics and Gynaecology, Institute of Clinical Medicine, University of Tartu, 51014, Tartu, Estonia
| | - Triin Laisk-Podar
- Competence Centre on Health Technologies, 50410, Tartu, Estonia
- Department of Obstetrics and Gynaecology, Institute of Clinical Medicine, University of Tartu, 51014, Tartu, Estonia
| | | | - Merli Saare
- Competence Centre on Health Technologies, 50410, Tartu, Estonia
- Department of Obstetrics and Gynaecology, Institute of Clinical Medicine, University of Tartu, 51014, Tartu, Estonia
| | | | - Kaarel Krjutškov
- Competence Centre on Health Technologies, 50410, Tartu, Estonia
- Department of Biosciences and Nutrition, and Center for Innovative Medicine, Karolinska Institutet, 14183, Huddinge, Sweden
| | - Lusine Aghajanova
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Francisco, San Francisco, 94143-0132, CA, USA
| | - Parameswaran G Lalitkumar
- Department of Women's and Children's Health, Division of Obstetrics and Gynecology, Karolinska Institutet, and Karolinska University Hospital, 17176, Stockholm, Sweden
| | - Kristina Gemzell-Danielsson
- Department of Women's and Children's Health, Division of Obstetrics and Gynecology, Karolinska Institutet, and Karolinska University Hospital, 17176, Stockholm, Sweden
| | - Linda Giudice
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Francisco, San Francisco, 94143-0132, CA, USA
| | - Carlos Simón
- Department of Obstetrics and Gynaecology, Valencia University & INCLIVA, Igenomix & Fundación IVI, 46021, Valencia, Spain
| | - Andres Salumets
- Competence Centre on Health Technologies, 50410, Tartu, Estonia
- Department of Obstetrics and Gynaecology, Institute of Clinical Medicine, University of Tartu, 51014, Tartu, Estonia
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, FI-00029, HUS, Finland
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Germeyer A, Capp E, Schlicksupp F, Jauckus J, von Rango U, von Wolff M, Strowitzki T. Cell-type specific expression and regulation of apolipoprotein D and E in human endometrium. Eur J Obstet Gynecol Reprod Biol 2013; 170:487-91. [PMID: 23895740 DOI: 10.1016/j.ejogrb.2013.06.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 05/23/2013] [Accepted: 06/28/2013] [Indexed: 01/03/2023]
Abstract
OBJECTIVE To assess the expression and regulation of antilipoprotein D (ApoD) and antilipoprotein E (ApoE) in human endometrium. STUDY DESIGN Endometrial biopsies from healthy, regularly cycling women were collected during the late proliferative and mid-secretory phase. mRNA gene expression of ApoD and ApoE was determined using real-time PCR in whole tissue, in isolated stromal (ESC), epithelial (EEC) and CD45(+) leukocytes (EIC), as well as after hormonal stimulation of ESC and EEC in vitro. Protein expression was analyzed using immunohistochemistry. RESULTS ApoD and ApoE mRNA was expressed in all cell types examined. A rise in ApoD mRNA expression was seen in whole endometrium, ESC, and EEC in the secretory phase, as well as after hormonal stimulation of ESC and EEC in vitro. ApoE mRNA was significantly upregulated in whole endometrium of secretory phase biopsies, while its expression was not altered by progesterone in vitro. Immunohistochemistry of whole endometrial tissue localized ApoD mainly in ESC and EEC. While ApoE was localized slightly in ESC, it was particularly noted on the surface of secretory phase endothelial cells. CONCLUSION We demonstrate for the first time the cell-type and cycle dependent expression of ApoD and ApoE within human endometrium, suggesting their role in endometrial modulation.
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Affiliation(s)
- Ariane Germeyer
- Department of Gynaecological Endocrinology and Reproductive Medicine, University Hospital Heidelberg, Heidelberg, Germany.
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Guo SW. The endometrial epigenome and its response to steroid hormones. Mol Cell Endocrinol 2012; 358:185-96. [PMID: 22067514 DOI: 10.1016/j.mce.2011.10.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2011] [Revised: 10/21/2011] [Accepted: 10/21/2011] [Indexed: 01/21/2023]
Abstract
The human endometrium undergoes cyclic morphological and functional changes during the menstrual cycle. These changes are driven mainly by steroid hormones and orchestrated by a myriad of genes - many of which have been identified recently as being epigenetically regulated. Epigenetic modifications, including DNA methylation and histone acetylations, are shown recently to be involved in functional changes in endometrium and endometrial diseases. Since epigenetics itself is a rapidly evolving field, this review starts with an overview of epigenetics and its intrinsic connections with endometrial response to steroid hormones, highlighting its various levels of complexities. This is followed by a review of published and unpublished work on "writers", "erasers", and other players of endometrial epigenome. In the end, areas in need for future research in this area will be exposed.
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Affiliation(s)
- Sun-Wei Guo
- Shanghai Obstetric and Gynecologic Hospital, and Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Fudan University Shanghai College of Medicine, 419 Fangxie Road, Shanghai 200011, China.
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