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Ikeda T, Jin D, Takai S, Nakamura K, Nemoto E, Kojima S, Oku H. Blastocyst-like Structures in the Peripheral Retina of Young Adult Beagles. Int J Mol Sci 2024; 25:6045. [PMID: 38892233 PMCID: PMC11172769 DOI: 10.3390/ijms25116045] [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: 04/11/2024] [Revised: 05/26/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
In this immunohistological study on the peripheral retina of 3-year-old beagle dogs, excised retina specimens were immunostained with antibodies against nestin, Oct4, Nanog, Sox2, CDX2, cytokeratin 18 (CK 18), RPE65, and YAP1, as well as hematoxylin and DAPI, two nuclear stains. Our findings revealed solitary cysts of various sizes in the inner retina. Intriguingly, a mass of small round cells with scant cytoplasms was observed in the cavity of small cysts, while many disorganized cells partially occupied the cavity of the large cysts. The small cysts were strongly positive for nestin, Oct4, Nanog, Sox2, CDX2, CK18, and YAP1. RPE65-positive cells were exclusively observed in the tissue surrounding the cysts. Since RPE65 is a specific marker of retinal pigment epithelial (RPE) cells, the surrounding cells of the peripheral cysts were presumably derived from RPE cells that migrated intraretinally. In the small cysts, intense positive staining for nestin, a marker of retinal stem cells, seemed to indicate that they were derived from retinal stem cells. The morphology and positive staining for markers of blastocyst and RPE cells indicated that the small cysts may have formed structures resembling the blastocyst, possibly caused by the interaction between retinal stem cells and migrated RPE cells.
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Affiliation(s)
- Tsunehiko Ikeda
- Department of Ophthalmology, Osaka Kaisei Hospital, Osaka 532-0003, Osaka, Japan
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Takatsuki 569-8686, Osaka, Japan; (E.N.); (S.K.); (H.O.)
| | - Denan Jin
- Department of Innovative Medicine, Graduate School of Medicine, Osaka Medical and Pharmaceutical University, Takatsuki 569-8686, Osaka, Japan; (D.J.); (S.T.)
| | - Shinji Takai
- Department of Innovative Medicine, Graduate School of Medicine, Osaka Medical and Pharmaceutical University, Takatsuki 569-8686, Osaka, Japan; (D.J.); (S.T.)
| | | | - Emika Nemoto
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Takatsuki 569-8686, Osaka, Japan; (E.N.); (S.K.); (H.O.)
| | - Shota Kojima
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Takatsuki 569-8686, Osaka, Japan; (E.N.); (S.K.); (H.O.)
| | - Hidehiro Oku
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Takatsuki 569-8686, Osaka, Japan; (E.N.); (S.K.); (H.O.)
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2
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Murphy D, Salataj E, Di Giammartino DC, Rodriguez-Hernaez J, Kloetgen A, Garg V, Char E, Uyehara CM, Ee LS, Lee U, Stadtfeld M, Hadjantonakis AK, Tsirigos A, Polyzos A, Apostolou E. 3D Enhancer-promoter networks provide predictive features for gene expression and coregulation in early embryonic lineages. Nat Struct Mol Biol 2024; 31:125-140. [PMID: 38053013 PMCID: PMC10897904 DOI: 10.1038/s41594-023-01130-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 09/18/2023] [Indexed: 12/07/2023]
Abstract
Mammalian embryogenesis commences with two pivotal and binary cell fate decisions that give rise to three essential lineages: the trophectoderm, the epiblast and the primitive endoderm. Although key signaling pathways and transcription factors that control these early embryonic decisions have been identified, the non-coding regulatory elements through which transcriptional regulators enact these fates remain understudied. Here, we characterize, at a genome-wide scale, enhancer activity and 3D connectivity in embryo-derived stem cell lines that represent each of the early developmental fates. We observe extensive enhancer remodeling and fine-scale 3D chromatin rewiring among the three lineages, which strongly associate with transcriptional changes, although distinct groups of genes are irresponsive to topological changes. In each lineage, a high degree of connectivity, or 'hubness', positively correlates with levels of gene expression and enriches for cell-type specific and essential genes. Genes within 3D hubs also show a significantly stronger probability of coregulation across lineages compared to genes in linear proximity or within the same contact domains. By incorporating 3D chromatin features, we build a predictive model for transcriptional regulation (3D-HiChAT) that outperforms models using only 1D promoter or proximal variables to predict levels and cell-type specificity of gene expression. Using 3D-HiChAT, we identify, in silico, candidate functional enhancers and hubs in each cell lineage, and with CRISPRi experiments, we validate several enhancers that control gene expression in their respective lineages. Our study identifies 3D regulatory hubs associated with the earliest mammalian lineages and describes their relationship to gene expression and cell identity, providing a framework to comprehensively understand lineage-specific transcriptional behaviors.
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Affiliation(s)
- Dylan Murphy
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
- Physiology, Biophysics and Systems Biology Program, Weill Cornell Graduate School of Medical Sciences, Cornell University, New York, NY, USA
| | - Eralda Salataj
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
| | - Dafne Campigli Di Giammartino
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
- 3D Chromatin Conformation and RNA Genomics Laboratory, Center for Human Technologies (CHT), Istituto Italiano di Tecnologia (IIT), Genova, Italy
| | - Javier Rodriguez-Hernaez
- Department of Pathology, New York University Langone Health, New York, NY, USA
- Department of Medicine, New York University Langone Health, New York, NY, USA
- Applied Bioinformatics Laboratory, New York University Langone Health, New York, NY, USA
| | - Andreas Kloetgen
- Department of Pathology, New York University Langone Health, New York, NY, USA
- Department of Medicine, New York University Langone Health, New York, NY, USA
- Applied Bioinformatics Laboratory, New York University Langone Health, New York, NY, USA
| | - Vidur Garg
- Developmental Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Biochemistry Cell and Molecular Biology Program, Weill Cornell Graduate School of Medical Sciences, Cornell University, New York, NY, USA
| | - Erin Char
- Tri-Institutional Training Program in Computational Biology and Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Christopher M Uyehara
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
| | - Ly-Sha Ee
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
| | - UkJin Lee
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
- Biochemistry Cell and Molecular Biology Program, Weill Cornell Graduate School of Medical Sciences, Cornell University, New York, NY, USA
| | - Matthias Stadtfeld
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
| | - Anna-Katerina Hadjantonakis
- Developmental Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Aristotelis Tsirigos
- Department of Pathology, New York University Langone Health, New York, NY, USA.
- Department of Medicine, New York University Langone Health, New York, NY, USA.
- Applied Bioinformatics Laboratory, New York University Langone Health, New York, NY, USA.
| | - Alexander Polyzos
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA.
| | - Effie Apostolou
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA.
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3
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Murphy D, Salataj E, Di Giammartino DC, Rodriguez-Hernaez J, Kloetgen A, Garg V, Char E, Uyehara CM, Ee LS, Lee U, Stadtfeld M, Hadjantonakis AK, Tsirigos A, Polyzos A, Apostolou E. Systematic mapping and modeling of 3D enhancer-promoter interactions in early mouse embryonic lineages reveal regulatory principles that determine the levels and cell-type specificity of gene expression. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.19.549714. [PMID: 37577543 PMCID: PMC10422694 DOI: 10.1101/2023.07.19.549714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Mammalian embryogenesis commences with two pivotal and binary cell fate decisions that give rise to three essential lineages, the trophectoderm (TE), the epiblast (EPI) and the primitive endoderm (PrE). Although key signaling pathways and transcription factors that control these early embryonic decisions have been identified, the non-coding regulatory elements via which transcriptional regulators enact these fates remain understudied. To address this gap, we have characterized, at a genome-wide scale, enhancer activity and 3D connectivity in embryo-derived stem cell lines that represent each of the early developmental fates. We observed extensive enhancer remodeling and fine-scale 3D chromatin rewiring among the three lineages, which strongly associate with transcriptional changes, although there are distinct groups of genes that are irresponsive to topological changes. In each lineage, a high degree of connectivity or "hubness" positively correlates with levels of gene expression and enriches for cell-type specific and essential genes. Genes within 3D hubs also show a significantly stronger probability of coregulation across lineages, compared to genes in linear proximity or within the same contact domains. By incorporating 3D chromatin features, we build a novel predictive model for transcriptional regulation (3D-HiChAT), which outperformed models that use only 1D promoter or proximal variables in predicting levels and cell-type specificity of gene expression. Using 3D-HiChAT, we performed genome-wide in silico perturbations to nominate candidate functional enhancers and hubs in each cell lineage, and with CRISPRi experiments we validated several novel enhancers that control expression of one or more genes in their respective lineages. Our study comprehensively identifies 3D regulatory hubs associated with the earliest mammalian lineages and describes their relationship to gene expression and cell identity, providing a framework to understand lineage-specific transcriptional behaviors.
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Affiliation(s)
- Dylan Murphy
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, United States
| | - Eralda Salataj
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, United States
| | - Dafne Campigli Di Giammartino
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, United States
- 3D Chromatin Conformation and RNA genomics laboratory, Instituto Italiano di Tecnologia (IIT), Center for Human Technologies (CHT), Genova, Italy (current affiliation)
| | - Javier Rodriguez-Hernaez
- Department of Pathology, New York University Langone Health, New York, NY 10016, USA
- Applied Bioinformatics Laboratory, New York University Langone Health, New York, NY 10016, USA
| | - Andreas Kloetgen
- Department of Pathology, New York University Langone Health, New York, NY 10016, USA
- Applied Bioinformatics Laboratory, New York University Langone Health, New York, NY 10016, USA
| | - Vidur Garg
- Developmental Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Biochemistry Cell and Molecular Biology Program, Weill Cornell Graduate School of Medical Sciences, Cornell University, New York, NY 10065, USA
| | - Erin Char
- Tri-Institutional Training Program in Computational Biology and Medicine, Weill Cornell Medical College, New York, 10065, New York, USA
| | - Christopher M. Uyehara
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, United States
| | - Ly-sha Ee
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, United States
| | - UkJin Lee
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, United States
| | - Matthias Stadtfeld
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, United States
| | - Anna-Katerina Hadjantonakis
- Developmental Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Biochemistry Cell and Molecular Biology Program, Weill Cornell Graduate School of Medical Sciences, Cornell University, New York, NY 10065, USA
| | - Aristotelis Tsirigos
- Department of Pathology, New York University Langone Health, New York, NY 10016, USA
- Applied Bioinformatics Laboratory, New York University Langone Health, New York, NY 10016, USA
| | - Alexander Polyzos
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, United States
| | - Effie Apostolou
- Sanford I. Weill Department of Medicine, Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY, United States
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4
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Wu X, Liu Y, Wang W, Crimmings K, Williams A, Mager J, Cui W. Early embryonic lethality of mice lacking POLD2. Mol Reprod Dev 2023; 90:98-108. [PMID: 36528861 PMCID: PMC9974775 DOI: 10.1002/mrd.23663] [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: 08/05/2022] [Revised: 11/09/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022]
Abstract
As a highly conserved DNA polymerase (Pol), Pol δ plays crucial roles in chromosomal DNA synthesis and various DNA repair pathways. However, the function of POLD2, the second small subunit of DNA Pol δ (p50 subunit), has not been characterized in vivo during mammalian development. Here, we report for the first time, the essential role of subunit POLD2 during early murine embryogenesis. Although Pold2 mutant mouse embryos exhibit normal morphology at E3.5 blastocyst stage, they cannot be recovered at gastrulation stages. Outgrowth assays reveal that mutant blastocysts cannot hatch from the zona pellucida, indicating impaired blastocyst function. Notably, these phenotypes can be recapitulated by small interfering RNA (siRNA)-mediated knockdown, which also exhibit slowed cellular proliferation together with skewed primitive endoderm and epiblast allocation during the second cell lineage specification. In summary, our study demonstrates that POLD2 is essential for the earliest steps of mammalian development, and the retarded proliferation and embryogenesis may also alter the following cell lineage specifications in the mouse blastocyst embryos.
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Affiliation(s)
- Xiaoqing Wu
- Anhui Province Key Laboratory of Embryo Development and Reproductive Regulation, Anhui Province Key Laboratory of Environmental Hormone and Reproduction, Fuyang Normal University, Fuyang, Anhui, China
| | - Yong Liu
- Anhui Province Key Laboratory of Embryo Development and Reproductive Regulation, Anhui Province Key Laboratory of Environmental Hormone and Reproduction, Fuyang Normal University, Fuyang, Anhui, China
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Wenying Wang
- Anhui Province Key Laboratory of Embryo Development and Reproductive Regulation, Anhui Province Key Laboratory of Environmental Hormone and Reproduction, Fuyang Normal University, Fuyang, Anhui, China
| | - Kate Crimmings
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Andrea Williams
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Jesse Mager
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Wei Cui
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
- Animal Models Core Facility, Institute for Applied Life Sciences (IALS), University of Massachusetts, Amherst, MA, USA
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5
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Stage-specific H3K9me3 occupancy ensures retrotransposon silencing in human pre-implantation embryos. Cell Stem Cell 2022; 29:1051-1066.e8. [DOI: 10.1016/j.stem.2022.06.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 03/31/2022] [Accepted: 06/01/2022] [Indexed: 12/13/2022]
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6
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Miao X, Cui W. Berberine alleviates LPS-induced apoptosis, oxidation, and skewed lineages during mouse preimplantation development†. Biol Reprod 2022; 106:699-709. [PMID: 35024788 PMCID: PMC9040657 DOI: 10.1093/biolre/ioac002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/30/2021] [Accepted: 01/06/2022] [Indexed: 01/14/2023] Open
Abstract
Female infertility is a heterogeneous disorder with a variety of complex causes, including inflammation and oxidative stress, which are also closely associated with the pathogenesis of polycystic ovary syndrome (PCOS). As a new treatment for PCOS, berberine (BER), a natural compound from Berberis, has been clinically applied recently. However, the mechanisms underlying the association between BER and embryogenesis are still largely unknown. In this study, effects of BER on preimplantation development were evaluated under both normal and inflammatory culture conditions induced by lipopolysaccharide (LPS) in mice. Our data first suggest that BER itself (25 nM) does not affect embryo quality or future developmental potency; however, it can effectively alleviate LPS-induced embryo damage by mitigating apoptosis via reactive oxygen species (ROS)-/caspase-3-dependent pathways and by suppressing proinflammatory cytokines via inhibition of the NF-κB signaling pathway during preimplantation embryonic development. In addition, skewed cell lineage specification in the inner cell mass (ICM) and primitive endoderm (PE) caused by LPS can also be successfully rescued with BER. In summary, these findings for the first time demonstrate the nontoxicity of low doses of BER and its antiapoptotic and antioxidative properties on embryonic cells during mammalian preimplantation development.
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Affiliation(s)
- Xiaosu Miao
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Wei Cui
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA.,Animal Models Core Facility, Institute for Applied Life Sciences (IALS), University of Massachusetts, Amherst, MA, USA
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7
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Miao X, Sun T, Barletta H, Mager J, Cui W. Loss of RBBP4 results in defective inner cell mass, severe apoptosis, hyperacetylated histones and preimplantation lethality in mice†. Biol Reprod 2021; 103:13-23. [PMID: 32285100 DOI: 10.1093/biolre/ioaa046] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 03/13/2020] [Accepted: 04/09/2020] [Indexed: 01/06/2023] Open
Abstract
Retinoblastoma-binding protein 4 (RBBP4) (also known as chromatin-remodeling factor RBAP48) is an evolutionarily conserved protein that has been involved in various biological processes. Although a variety of functions have been attributed to RBBP4 in vitro, mammalian RBBP4 has not been studied in vivo. Here we report that RBBP4 is essential during early mouse embryo development. Although Rbbp4 mutant embryos exhibit normal morphology at E3.5 blastocyst stage, they cannot be recovered at E7.5 early post-gastrulation stage, suggesting an implantation failure. Outgrowth (OG) assays reveal that mutant blastocysts cannot hatch from the zona or can hatch but then arrest without further development. We find that while there is no change in proliferation or levels of reactive oxygen species, both apoptosis and histone acetylation are significantly increased in mutant blastocysts. Analysis of lineage specification reveals that while the trophoblast is properly specified, both epiblast and primitive endoderm lineages are compromised with severe reductions in cell number and/or specification. In summary, these findings demonstrate the essential role of RBBP4 during early mammalian embryogenesis.
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Affiliation(s)
- Xiaosu Miao
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Tieqi Sun
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Holly Barletta
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Jesse Mager
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Wei Cui
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA.,Animal Models Core Facility, Institute for Applied Life Sciences (IALS), University of Massachusetts, Amherst, MA, USA
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8
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Hemmati E, Mirghafourvand M, Mobasseri M, Shakouri SK, Mikaeli P, Farshbaf-Khalili A. Prevalence of primary osteoporosis and low bone mass in postmenopausal women and related risk factors. JOURNAL OF EDUCATION AND HEALTH PROMOTION 2021; 10:204. [PMID: 34395641 PMCID: PMC8318176 DOI: 10.4103/jehp.jehp_945_20] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 09/08/2020] [Indexed: 06/13/2023]
Abstract
BACKGROUND Globally, 30% of female over 50 years old have osteoporosis. This disease is one of the major causes of disability and death in the elderly. This research was aimed to determine the prevalence of primary osteoporosis and low bone density based on bone mineral density in postmenopausal women and its sociodemographic, obstetric, and life style risk factors. MATERIALS AND METHODS This cross-sectional descriptive-analytical study was performed by simple random sampling on 850 postmenopausal women aged 50-65 years covered by all health centers, from August 2018 to April 2019, in Tabriz-Iran. Four hundred and forty-five eligible women underwent densitometry using dual-energy X-ray absorptiometry in the lumbar spine and femoral neck. Socio-individual, obstetric-medical, international physical activity questionnaires-short form, and anthropometric questionnaires were completed. Data analyzed using descriptive and analytical statistics including multivariate logistic regression in SPSS 21 software. RESULTS The prevalence of primary osteoporosis based on lumbar vertebra T-score, femoral neck T-score, and total was 23.4%, 3.4%, and 24.5%, respectively, and the prevalence of primary osteopenia based on lumbar vertebra T-score, femur neck T-score, and total was 42%, 35.5%, and 43.6%, respectively. The present study showed that the odds of osteoporosis increased by increment of age (odds ratio [OR]: 1.18; 95% confidence interval [CI]: 1.07-1.30), but it decreased by increasing menopausal age (OR: 0.92; 95% CI: 0.85-1.01), body mass index (OR: 0.87; 95% CI: 0.78-0.97), arm circumference (OR: 0.84; 95% CI: 0.74-0.95), and education level (P = 0.028). It was higher in unmarried women (OR: 2.65; 95% CI: 0.99-7.08) and those with nonpersonal housing (OR: 4.02; 95% CI: 1.24-13.07). CONCLUSIONS Given the high prevalence of primary osteoporosis and low bone mass in postmenopausal women, health education is necessary for preventing modifiable risk factors and reducing the complications of this disease.
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Affiliation(s)
- Elnaz Hemmati
- Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran, Department of Midwifery, Faculty of Nursing and Midwifery, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mojgan Mirghafourvand
- Social Determinants of Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Majid Mobasseri
- Endocrine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyed Kazem Shakouri
- Physical Medicine and Rehabilitation Research Centre, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Parvaneh Mikaeli
- Bone Densitometry Center, Sina Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Azizeh Farshbaf-Khalili
- Physical Medicine and Rehabilitation Research Centre, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
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9
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Cui W. Oocyte Spontaneous Activation: An Overlooked Cellular Event That Impairs Female Fertility in Mammals. Front Cell Dev Biol 2021; 9:648057. [PMID: 33763428 PMCID: PMC7982476 DOI: 10.3389/fcell.2021.648057] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 02/08/2021] [Indexed: 01/14/2023] Open
Abstract
In mammals, including humans, mature oocytes are ovulated into the oviduct for fertilization. Normally, these oocytes are arrested at metaphase of the second meiosis (MII), and this arrest can be maintained for a certain period, which is essential for fertilization in vivo and oocyte manipulations in vitro, such as assisted reproduction in clinics and nuclear/spindle transfer in laboratories. However, in some species and under certain circumstances, exit from MII occurs spontaneously without any obvious stimulation or morphological signs, which is so-called oocyte spontaneous activation (OSA). This mini-review summarizes two types of OSA. In the first type (e.g., most rat strains), oocytes can maintain MII arrest in vivo, but once removed out, oocytes undergo OSA with sister chromatids separated and eventually scattered in the cytoplasm. Because the stimulation is minimal (oocyte collection itself), this OSA is incomplete and cannot force oocytes into interphase. Notably, once re-activated by sperm or chemicals, those scattered chromatids will form multiple pronuclei (MPN), which may recapitulate certain MPN and aneuploidy cases observed in fertility clinics. The second type of OSA occurs in ovarian oocytes (e.g., certain mouse strains and dromedary camel). Without ovulation or fertilization, these OSA-oocytes can initiate intrafollicular development, but these parthenotes cannot develop to term due to aberrant genomic imprinting. Instead, they either degrade or give rise to ovarian teratomas, which have also been reported in female patients. Last but not the least, genetic models displaying OSA phenotypes and the lessons we can learn from animal OSA for human reproduction are also discussed.
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Affiliation(s)
- Wei Cui
- Department of Veterinary and Animal Sciences, Animal Models Core Facility, Institute for Applied Life Sciences (IALS), University of Massachusetts Amherst, Amherst, MA, United States
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10
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Su J, Miao X, Archambault D, Mager J, Cui W. ZC3H4-a novel Cys-Cys-Cys-His-type zinc finger protein-is essential for early embryogenesis in mice†. Biol Reprod 2020; 104:325-335. [PMID: 33246328 DOI: 10.1093/biolre/ioaa215] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 10/10/2020] [Accepted: 11/25/2020] [Indexed: 02/07/2023] Open
Abstract
Zinc finger domains of the Cys-Cys-Cys-His (CCCH) class are evolutionarily conserved proteins that bind nucleic acids and are involved in various biological processes. Nearly 60 CCCH-type zinc finger proteins have been identified in humans and mice, most have not been functionally characterized. Here, we provide the first in vivo functional characterization of ZC3H4-a novel CCCH-type zinc finger protein. Our results show that although Zc3h4 mutant embryos exhibit normal morphology at E3.5 blastocyst stage, they cannot be recovered at E7.5 early post-gastrulation stage, suggesting implantation failure. Outgrowth assays reveal that mutant blastocysts either fail to hatch from the zona pellucida, or can hatch but do not form a typical inner cell mass colony, the source of embryonic stem cells (ESCs). Although there is no change in levels of reactive oxygen species, Zc3h4 mutants display severe DNA breaks and reduced cell proliferation. Analysis of lineage specification reveals that both epiblast and primitive endoderm lineages are compromised with severe reductions in cell number and/or specification in the mutant blastocysts. In summary, these findings demonstrate the essential role of ZC3H4 during early mammalian embryogenesis.
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Affiliation(s)
- Jianmin Su
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA.,Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, PR China
| | - Xiaosu Miao
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Danielle Archambault
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Jesse Mager
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA
| | - Wei Cui
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA, USA.,Animal Models Core Facility, Institute for Applied Life Sciences (IALS), University of Massachusetts, Amherst, MA, USA
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11
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Cui W, Cheong A, Wang Y, Tsuchida Y, Liu Y, Tremblay KD, Mager J. MCRS1 is essential for epiblast development during early mouse embryogenesis. Reproduction 2020; 159:1-13. [PMID: 31671403 DOI: 10.1530/rep-19-0334] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 10/29/2019] [Indexed: 12/11/2022]
Abstract
Microspherule protein 1 (MCRS1, also known as MSP58) is an evolutionarily conserved protein that has been implicated in various biological processes. Although a variety of functions have been attributed to MCRS1 in vitro, mammalian MCRS1 has not been studied in vivo. Here we report that MCRS1 is essential during early murine development. Mcrs1 mutant embryos exhibit normal morphology at the blastocyst stage but cannot be recovered at gastrulation, suggesting an implantation failure. Outgrowth (OG) assays reveal that mutant blastocysts do not form a typical inner cell mass (ICM) colony, the source of embryonic stem cells (ESCs). Surprisingly, cell death and histone H4 acetylation analysis reveal that apoptosis and global H4 acetylation are normal in mutant blastocysts. However, analysis of lineage specification reveals that while the trophoblast and primitive endoderm are properly specified, the epiblast lineage is compromised and exhibits a severe reduction in cell number. In summary, our study demonstrates the indispensable role of MCRS1 in epiblast development during early mammalian embryogenesis.
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Affiliation(s)
- Wei Cui
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA.,Animal Models Core Facility, Institute for Applied Life Sciences (IALS), University of Massachusetts, Amherst, Massachusetts, USA
| | - Agnes Cheong
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Yongsheng Wang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Yuran Tsuchida
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Yong Liu
- Anhui Province Key Laboratory of Embryo Development and Reproductive Regulation, Anhui Province Key Laboratory of Environmental Hormone and Reproduction, Fuyang Normal University, Fuyang, Anhui, People's Republic of China
| | - Kimberly D Tremblay
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Jesse Mager
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
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12
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Miao X, Sun T, Golan M, Mager J, Cui W. Loss of POLR1D results in embryonic lethality prior to blastocyst formation in mice. Mol Reprod Dev 2020; 87:1152-1158. [PMID: 33022126 DOI: 10.1002/mrd.23427] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 09/14/2020] [Accepted: 09/17/2020] [Indexed: 12/13/2022]
Abstract
In eukaryotic cells, RNA polymerase (Pol) I and Pol III are dedicated to the synthesis of ribosomal RNA precursors and a variety of small RNAs, respectively. Although RNA Pol I and Pol III complexes are crucial for the regulation of cell growth and cell cycle in all cell types, many of the components of the Pol I and Pol III complexes have not been functionally characterized in mammals. Here, we provide the first in vivo functional characterization of POLR1D, a subunit shared by RNA Pol I and Pol III, during early mammalian embryo development. Our results show that Polr1d mutant embryos cannot be recovered at E7.5 early post-gastrulation stage, suggesting failed implantation. Although Polr1d mutants can be recovered at E3.5, they exhibit delayed/stalled development with morula morphology rather than differentiation into blastocysts. Even with extended time in culture, mutant embryos fail to form blastocysts and eventually die. Analysis of E3.0 embryos revealed severe DNA damage in Polr1d mutants. Additionally, lineage assessment reveals that trophectoderm specification is compromised in the absence of Polr1d. In summary, these findings demonstrate the essential role of POLR1D during early mammalian embryogenesis and highlight cell-lethal phenotype without Polr1d function.
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Affiliation(s)
- Xiaosu Miao
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Tieqi Sun
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Morgane Golan
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Jesse Mager
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Wei Cui
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA.,Animal Models Core Facility, Institute for Applied Life Sciences (IALS), University of Massachusetts, Amherst, Massachusetts, USA
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13
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Cui W, Marcho C, Wang Y, Degani R, Golan M, Tremblay KD, Rivera-Pérez JA, Mager J. MED20 is essential for early embryogenesis and regulates NANOG expression. Reproduction 2020; 157:215-222. [PMID: 30571656 DOI: 10.1530/rep-18-0508] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 12/17/2018] [Indexed: 12/15/2022]
Abstract
Mediator is an evolutionarily conserved multi-subunit complex, bridging transcriptional activators and repressors to the general RNA polymerase II (Pol II) initiation machinery. Though the Mediator complex is crucial for the transcription of almost all Pol II promoters in eukaryotic organisms, the phenotypes of individual Mediator subunit mutants are each distinct. Here, we report for the first time, the essential role of subunit MED20 in early mammalian embryo development. Although Med20 mutant mouse embryos exhibit normal morphology at E3.5 blastocyst stage, they cannot be recovered at early post-gastrulation stages. Outgrowth assays show that mutant blastocysts cannot hatch from the zona pellucida, indicating impaired blastocyst function. Assessments of cell death and cell lineage specification reveal that apoptosis, inner cell mass, trophectoderm and primitive endoderm markers are normal in mutant blastocysts. However, the epiblast marker NANOG is ectopically expressed in the trophectoderm of Med20 mutants, indicative of defects in trophoblast specification. These results suggest that MED20 specifically, and the Mediator complex in general, are essential for the earliest steps of mammalian development and cell lineage specification.
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Affiliation(s)
- Wei Cui
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA.,Animal Models Core Facility, Institute for Applied Life Sciences (IALS), University of Massachusetts, Amherst, Massachusetts, USA
| | - Chelsea Marcho
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Yongsheng Wang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, PR China
| | - Rinat Degani
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Morgane Golan
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Kimberly D Tremblay
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | - Jaime A Rivera-Pérez
- Division of Genes and Development, Department of Pediatrics, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Jesse Mager
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts, USA
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14
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Grubelnik G, Boštjančič E, Pavlič A, Kos M, Zidar N. NANOG expression in human development and cancerogenesis. Exp Biol Med (Maywood) 2020; 245:456-464. [PMID: 32041418 PMCID: PMC7082888 DOI: 10.1177/1535370220905560] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
NANOG is an important stem cell transcription factor involved in human development and cancerogenesis. Its expression is complex and regulated on different levels. Moreover, NANOG protein might regulate hundreds of target genes at the same time. NANOG is crucial for preimplantation development phase and progressively decreases during embryonic stem cells differentiation, thus regulating embryonic and fetal development. Postnatally, NANOG is undetectable or expressed in very low amounts in the majority of human tissues. NANOG re-expression can be detected during cancerogenesis, already in precancerous lesions, with increasing levels of NANOG in high grade dysplasia. NANOG is believed to enable cancer cells to obtain stem-cell like properties, which are believed to be the source of expanding growth, tumor maintenance, metastasis formation, and tumor relapse. High NANOG expression in cancer is frequently associated with advanced stage, poor differentiation, worse overall survival, and resistance to treatment, and is therefore a promising prognostic and predictive marker. We summarize the current knowledge on the role of NANOG in cancerogenesis and development, including our own experience. We provide a critical overview of NANOG as a prognostic and diagnostic factor, including problems regarding its regulation and detection.
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Affiliation(s)
- Gašper Grubelnik
- Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana 1000, Slovenia
| | - Emanuela Boštjančič
- Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana 1000, Slovenia
| | - Ana Pavlič
- Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana 1000, Slovenia
| | - Marina Kos
- Clinical Hospital Center Sestre Milosrdnice and University of Zagreb Medical School, Zagreb 10 000, Croatia
| | - Nina Zidar
- Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana 1000, Slovenia
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15
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Midic U, Vincent KA, Wang K, Lokken A, Severance AL, Ralston A, Knott JG, Latham KE. Novel key roles for structural maintenance of chromosome flexible domain containing 1 (Smchd1) during preimplantation mouse development. Mol Reprod Dev 2019; 85:635-648. [PMID: 29900695 DOI: 10.1002/mrd.23001] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 06/08/2018] [Indexed: 12/16/2022]
Abstract
Structural maintenance of chromosome flexible domain containing 1 (Smchd1) is a chromatin regulatory gene for which mutations are associated with facioscapulohumeral muscular dystrophy and arhinia. The contribution of oocyte- and zygote-expressed SMCHD1 to early development was examined in mice ( Mus musculus) using a small interfering RNA knockdown approach. Smchd1 knockdown compromised long-term embryo viability, with reduced embryo nuclear volumes at the morula stage, reduced blastocyst cell number, formation and hatching, and reduced viability to term. RNA sequencing analysis of Smchd1 knockdown morulae revealed aberrant increases in expression of a small number of trophectoderm (TE)-related genes and reduced expression of cell proliferation genes, including S-phase kinase-associated protein 2 ( Skp2). Smchd1 expression was elevated in embryos deficient for Caudal-type homeobox transcription factor 2 ( Cdx2, a key regulator of TE specification), indicating that Smchd1 is normally repressed by CDX2. These results indicate that Smchd1 plays an important role in the preimplantation embryo, regulating early gene expression and contributing to long-term embryo viability. These results extend the known functions of SMCHD1 to the preimplantation period and highlight important function for maternally expressed Smchd1 messenger RNA and protein.
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Affiliation(s)
- Uros Midic
- Department of Animal Science, Michigan State University, East Lansing, Michigan
- Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan
| | - Kailey A Vincent
- Department of Animal Science, Michigan State University, East Lansing, Michigan
- Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan
| | - Kai Wang
- Department of Animal Science, Michigan State University, East Lansing, Michigan
- Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan
| | - Alyson Lokken
- Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan
| | - Ashley L Severance
- Department of Animal Science, Michigan State University, East Lansing, Michigan
- Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan
| | - Amy Ralston
- Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan
| | - Jason G Knott
- Department of Animal Science, Michigan State University, East Lansing, Michigan
- Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan
| | - Keith E Latham
- Department of Animal Science, Michigan State University, East Lansing, Michigan
- Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan
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16
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Zuo Z, Niu Z, Liu Z, Ma J, Qu P, Qiao F, Su J, Zhang Y, Wang Y. The effects of glycine-glutamine dipeptide replaced l-glutamine on bovine parthenogenetic and IVF embryo development. Theriogenology 2019; 141:82-90. [PMID: 31518732 DOI: 10.1016/j.theriogenology.2019.09.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 08/17/2019] [Accepted: 09/05/2019] [Indexed: 12/19/2022]
Abstract
Relative to alanine and serine amino acid levels, glutamine is highly abundant in follicular fluid, and is an important source of energy required for oocyte maturation and embryo development. Thus, glutamine is an essential component of in vitro embryo culture media. However, glutamine has poor stability and degrades spontaneously in solution to form ammonia and pyrrolidonecarboxylic acid. In the present study, we aimed to explore the effect of substituting l-glutamine with glycine-glutamine, a more stable glutamine, on development of early parthenogenetic embryos and in vitro fertilization (IVF) embryos in bovine. Results revealed that glycine-glutamine can significantly increase cleavage rate (parthenogenetic embryos:87.24% vs. 72.61%, IVF embryos:89.33% vs. 83.79%, P < 0.01), blastocyst number (parthenogenetic embryos:24.98% vs. 18.07%, IVF embryos:33.53% vs. 27.29%, P < 0.01), and blastocyst number (parthenogenetic embryos:96 vs. 76, IVF embryos:114 vs. 109, P < 0.01), reduce blastocyst apoptosis (parthenogenetic embryos:3.72% vs. 6.65%, IVF embryos:2.53% vs.6.23%, P < 0.01), alleviate embryo ammonia toxicity, and reduce the content of reactive oxygen species (ROS) compared with the l-glutamine. In addition, glycine-glutamine can alter epigenetic reprogramming by increasing the expression of HDAC1 (Histone Deacetylase 1) and decreasing the relative expression levels of H3K9 acetylation in early parthenogenetic embryos and IVF embryos. From our present study, we concluded that glycine-glutamine is an effective substitute of glutamine in modified synthetic oviduct fluid with amino acids (mSOFaa).
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Affiliation(s)
- Zhenzi Zuo
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zhihan Niu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zhengqing Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jukui Ma
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Pengxiang Qu
- Laboratory Animal Centre, Xi'an Jiaotong University Health Science Centre, Xi'an, Shaanxi, 710061, PR China
| | - Fang Qiao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jianmin Su
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
| | - Yongsheng Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
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17
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Blázquez R, Sánchez-Margallo FM, Álvarez V, Matilla E, Hernández N, Marinaro F, Gómez-Serrano M, Jorge I, Casado JG, Macías-García B. Murine embryos exposed to human endometrial MSCs-derived extracellular vesicles exhibit higher VEGF/PDGF AA release, increased blastomere count and hatching rates. PLoS One 2018; 13:e0196080. [PMID: 29684038 PMCID: PMC5912768 DOI: 10.1371/journal.pone.0196080] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 04/05/2018] [Indexed: 01/08/2023] Open
Abstract
Endometrial Mesenchymal Stromal Cells (endMSCs) are multipotent cells with immunomodulatory and pro-regenerative activity which is mainly mediated by a paracrine effect. The exosomes released by MSCs have become a promising therapeutic tool for the treatment of immune-mediated diseases. More specifically, extracellular vesicles derived from endMSCs (EV-endMSCs) have demonstrated a cardioprotective effect through the release of anti-apoptotic and pro-angiogenic factors. Here we hypothesize that EV-endMSCs may be used as a co-adjuvant to improve in vitro fertilization outcomes and embryo quality. Firstly, endMSCs and EV-endMSCs were isolated and phenotypically characterized for in vitro assays. Then, in vitro studies were performed on murine embryos co-cultured with EV-endMSCs at different concentrations. Our results firstly demonstrated a significant increase on the total blastomere count of expanded murine blastocysts. Moreover, EV-endMSCs triggered the release of pro-angiogenic molecules from embryos demonstrating an EV-endMSCs concentration-dependent increase of VEGF and PDGF-AA. The release of VEGF and PDGF-AA by the embryos may indicate that the beneficial effect of EV-endMSCs could be mediating not only an increase in the blastocyst’s total cell number, but also may promote endometrial angiogenesis, vascularization, differentiation and tissue remodeling. In summary, these results could be relevant for assisted reproduction being the first report describing the beneficial effect of human EV-endMSCs on embryo development.
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Affiliation(s)
- Rebeca Blázquez
- Stem Cell Therapy Unit, Jesús Usón Minimally Invasive Surgery Centre, Cáceres, Spain
- CIBER de Enfermedades Cardiovasculares, Madrid, Spain
| | - Francisco Miguel Sánchez-Margallo
- Stem Cell Therapy Unit, Jesús Usón Minimally Invasive Surgery Centre, Cáceres, Spain
- CIBER de Enfermedades Cardiovasculares, Madrid, Spain
| | - Verónica Álvarez
- Stem Cell Therapy Unit, Jesús Usón Minimally Invasive Surgery Centre, Cáceres, Spain
| | - Elvira Matilla
- Assisted Reproduction Unit, Jesús Usón Minimally Invasive Surgery Centre, Cáceres, Spain
| | - Nuria Hernández
- Assisted Reproduction Unit, Jesús Usón Minimally Invasive Surgery Centre, Cáceres, Spain
| | - Federica Marinaro
- Stem Cell Therapy Unit, Jesús Usón Minimally Invasive Surgery Centre, Cáceres, Spain
| | | | - Inmaculada Jorge
- CIBER de Enfermedades Cardiovasculares, Madrid, Spain
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Javier G. Casado
- Stem Cell Therapy Unit, Jesús Usón Minimally Invasive Surgery Centre, Cáceres, Spain
- CIBER de Enfermedades Cardiovasculares, Madrid, Spain
- * E-mail:
| | - Beatriz Macías-García
- Assisted Reproduction Unit, Jesús Usón Minimally Invasive Surgery Centre, Cáceres, Spain
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