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Madreiter-Sokolowski CT, Hiden U, Krstic J, Panzitt K, Wagner M, Enzinger C, Khalil M, Abdellatif M, Malle E, Madl T, Osto E, Schosserer M, Binder CJ, Olschewski A. Targeting organ-specific mitochondrial dysfunction to improve biological aging. Pharmacol Ther 2024; 262:108710. [PMID: 39179117 DOI: 10.1016/j.pharmthera.2024.108710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 08/09/2024] [Accepted: 08/20/2024] [Indexed: 08/26/2024]
Abstract
In an aging society, unveiling new anti-aging strategies to prevent and combat aging-related diseases is of utmost importance. Mitochondria are the primary ATP production sites and key regulators of programmed cell death. Consequently, these highly dynamic organelles play a central role in maintaining tissue function, and mitochondrial dysfunction is a pivotal factor in the progressive age-related decline in cellular homeostasis and organ function. The current review examines recent advances in understanding the interplay between mitochondrial dysfunction and organ-specific aging. Thereby, we dissect molecular mechanisms underlying mitochondrial impairment associated with the deterioration of organ function, exploring the role of mitochondrial DNA, reactive oxygen species homeostasis, metabolic activity, damage-associated molecular patterns, biogenesis, turnover, and dynamics. We also highlight emerging therapeutic strategies in preclinical and clinical tests that are supposed to rejuvenate mitochondrial function, such as antioxidants, mitochondrial biogenesis stimulators, and modulators of mitochondrial turnover and dynamics. Furthermore, we discuss potential benefits and challenges associated with the use of these interventions, emphasizing the need for organ-specific approaches given the unique mitochondrial characteristics of different tissues. In conclusion, this review highlights the therapeutic potential of addressing mitochondrial dysfunction to mitigate organ-specific aging, focusing on the skin, liver, lung, brain, skeletal muscle, and lung, as well as on the reproductive, immune, and cardiovascular systems. Based on a comprehensive understanding of the multifaceted roles of mitochondria, innovative therapeutic strategies may be developed and optimized to combat biological aging and promote healthy aging across diverse organ systems.
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Affiliation(s)
| | - Ursula Hiden
- Department of Obstetrics and Gynecology, Research Unit of Early Life Determinants, Medical University of Graz, Austria
| | - Jelena Krstic
- Division of Cell Biology, Histology and Embryology, Medical University of Graz, BioTechMed-Graz, Austria
| | - Katrin Panzitt
- Diagnostic and Research Institute of Pathology, Medical University of Graz, Austria
| | - Martin Wagner
- Division of Gastroenterology and Hepatology, Medical University of Graz, Austria
| | | | - Michael Khalil
- Department of Neurology, Medical University of Graz, Austria
| | - Mahmoud Abdellatif
- Division of Cardiology, Medical University of Graz, BioTechMed-Graz, Austria
| | - Ernst Malle
- Division of Molecular Biology and Biochemistry, Medical University of Graz, BioTechMed-Graz, Austria
| | - Tobias Madl
- Division of Medicinal Chemistry, Medical University of Graz, BioTechMed-Graz, Austria
| | - Elena Osto
- Division of Physiology and Pathophysiology, Medical University of Graz
| | - Markus Schosserer
- Center for Pathobiochemistry and Genetics, Medical University of Vienna, Austria; Christian Doppler Laboratory for Skin Multimodal Imaging of Aging and Senescence, Austria
| | - Christoph J Binder
- Department of Laboratory Medicine, Medical University of Vienna, Austria
| | - Andrea Olschewski
- Department of Anesthesiology and Intensive Care Medicine, LBI for Lung Vascular Research, Medical University of Graz, Austria.
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Zeber-Lubecka N, Kulecka M, Suchta K, Dąbrowska M, Ciebiera M, Hennig EE. Association of Mitochondrial Variants with the Joint Occurrence of Polycystic Ovary Syndrome and Hashimoto's Thyroiditis. Antioxidants (Basel) 2023; 12:1983. [PMID: 38001836 PMCID: PMC10669137 DOI: 10.3390/antiox12111983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/01/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
BACKGROUND The prevalence of Hashimoto's thyroiditis (HT) among women with polycystic ovary syndrome (PCOS) is higher than in the general female population, but the factors predisposing to the coexistence of these disorders remain unclear. This study employed whole genome sequencing of mitochondrial DNA to identify genetic variants potentially associated with the development of PCOS and HT and predisposing to their joint occurrence. RESULTS A total of 84 women participated, including patients with PCOS, HT, coexisting PCOS and HT (PCOS + HT) and healthy women. Both Fisher's exact and Mann-Whitney U statistical analyses were performed to compare the frequency of variants between groups. Ten differentiating variants were common to both analyses in PCOS + HT vs. PCOS, one in PCOS + HT vs. HT, and six in PCOS + HT vs. control. Several variants differentiating the PCOS + HT group from PCOS and controls were identified, located both in the mitochondrial genes (including the MT-CYB, MT-ND1, MT-ND2, MT-ND4, MT-ND6, MT-CO1, MT-CO3) and the D-loop region. Only two variants differentiated PCOS + HT and HT groups. One variant (13237a in MT-ND5) was common for all three comparisons and underrepresented in the PCOS + HT group. Functional enrichment analysis showed 10 pathways that were unique for the comparison of PCOS + HT and PCOS groups, especially related to ATP production and oxidative phosphorylation, and one pathway, the NADH-quinone oxidoreductase, chain M/4, that was unique for the comparison of PCOS + HT and control groups. Notably, nine pathways shared commonality between PCOS + HT vs. PCOS and PCOS + HT vs. control, related to the biogenesis and assembly of Complex I. CONCLUSION This study provides novel insights into the genetic variants associated with oxidative stress in women with coexisting PCOS and HT. Mitochondrial dysfunction and oxidative stress appear to play a role in the pathogenesis of both conditions. However, more mitochondrial variants were found to differentiate women with both PCOS and HT from those with PCOS alone than from those with HT alone.
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Affiliation(s)
- Natalia Zeber-Lubecka
- Department of Gastroenterology, Hepatology and Clinical Oncology, Centre of Postgraduate Medical Education, 02-781 Warsaw, Poland; (N.Z.-L.); (M.K.)
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland;
| | - Maria Kulecka
- Department of Gastroenterology, Hepatology and Clinical Oncology, Centre of Postgraduate Medical Education, 02-781 Warsaw, Poland; (N.Z.-L.); (M.K.)
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland;
| | - Katarzyna Suchta
- Department of Gynaecological Endocrinology, Medical University of Warsaw, 00-315 Warsaw, Poland;
| | - Michalina Dąbrowska
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland;
| | - Michał Ciebiera
- Second Department of Obstetrics and Gynecology, Centre of Postgraduate Medical Education, 00-189 Warsaw, Poland;
- Warsaw Institute of Women’s Health, 00-189 Warsaw, Poland
| | - Ewa E. Hennig
- Department of Gastroenterology, Hepatology and Clinical Oncology, Centre of Postgraduate Medical Education, 02-781 Warsaw, Poland; (N.Z.-L.); (M.K.)
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland;
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3
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Archer E, Lavie CJ. The failure of gene-centrism. Behav Brain Sci 2023; 46:e209. [PMID: 37694989 DOI: 10.1017/s0140525x22002436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
"Challenging the utility of polygenic scores for social science" is a compelling but limited critique. Phenotypic development is sensitive to both initial conditions and all subsequent states - from conception to senescence. Thus, gene-centric analyses are misleading (and often meaningless) because gene products are transformed, and their phenotypic 'effects' combined and attenuated with successive propagations from molecular and cellular contexts to organismal and social environments.
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Affiliation(s)
- Edward Archer
- Research and Development, EvolvingFX, LLC, Fort Wayne, IN, USA
| | - Carl J Lavie
- John Ochsner Heart & Vascular Institute, Ochsner Clinical School - The University of Queensland School of Medicine, New Orleans, LA, USA
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Archer E, Lavie CJ, Dobersek U, Hill JO. Metabolic Inheritance and the Competition for Calories between Mother and Fetus. Metabolites 2023; 13:metabo13040545. [PMID: 37110203 PMCID: PMC10146335 DOI: 10.3390/metabo13040545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/29/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
During the prenatal period, maternal and fetal cells compete for calories and nutrients. To ensure the survival of the mother and development of the fetus, the prenatal hormonal milieu alters the competitive environment via metabolic perturbations (e.g., insulin resistance). These perturbations increase maternal caloric consumption and engender increments in both maternal fat mass and the number of calories captured by the fetus. However, a mother's metabolic and behavioral phenotypes (e.g., physical activity levels) and her external environment (e.g., food availability) can asymmetrically impact the competitive milieu, leading to irreversible changes in pre- and post-natal development-as exhibited by stunting and obesity. Therefore, the interaction of maternal metabolism, behavior, and environment impact the competition for calories-which in turn creates a continuum of health trajectories in offspring. In sum, the inheritance of metabolic phenotypes offers a comprehensive and consilient explanation for much of the increase in obesity and T2DM over the past 50 years in human and non-human mammals.
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Affiliation(s)
| | - Carl J Lavie
- Department of Cardiovascular Diseases, John Ochsner Heart & Vascular Institute Ochsner Clinical School-The University of Queensland School of Medicine, New Orleans, LA 70121, USA
| | - Urska Dobersek
- Department of Psychology, University of Southern Indiana, Evansville, IN 47712, USA
| | - James O Hill
- Nutrition Obesity Research Center, University of Alabama at Birmingham, Birmingham, AL 35294, USA
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5
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Chao S, Li LJ, Lu J, Zhao SX, Zhao MH, Huang GA, Yin S, Shen W, Sun QY, Zhao Y, Ge ZJ, Zhao L. Epigallocatechin gallate improves the quality of diabetic oocytes. Biomed Pharmacother 2023; 159:114267. [PMID: 36669363 DOI: 10.1016/j.biopha.2023.114267] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/12/2023] [Accepted: 01/16/2023] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Maternal diabetes compromises the quality and developmental potential of oocytes. Therefore, it is important to study how to ameliorate the adverse effects of diabetes on oocyte quality. Epigallocatechin gallate (EGCG) has a variety of physiological activities, including anti-inflammatory, antioxidant, and anti-diabetes. In the present study, we evaluated the effect of EGCG on the maturation of diabetic oocytes in vitro. OBJECTIVE Investigating the role of EGCG in restoring the adverse effects of diabetes on oocyte quality. METHODS Diabetes mouse model was established by a single injection of streptozotocin (STZ). Oocytes were collected and matured in vitro with/without EGCG in M16 medium. RESULTS Compared with control, diabetic oocytes have a higher frequency of spindle defects and chromosome misalignment, but EGCG effectively reduces the incidence of oocytes with abnormal spindle assembly and chromosome mismatches. Moreover, the abnormal mitochondrial membrane potential (MMP) of diabetic oocytes is significantly alleviated by EGCG, and the reduced expression of genes regulating mitochondrial fusion (Mfn1 and Mfn2) and fission (Drp1) in diabetic oocytes is significantly increased while EGCG is added. EGCG also decreases the higher level of reactive oxygen species (ROS) in diabetic oocytes that may be regulated by the increased expression of superoxide dismutase 1 (Sod1) and superoxide dismutase 2 (Sod2). EGCG can also reduce the DNA damage of diabetic oocytes. CONCLUSIONS Our results suggest that EGCG, at least partially, improve the quality of diabetic oocytes.
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Affiliation(s)
- Shuo Chao
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Li-Jun Li
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Jun Lu
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Shu-Xian Zhao
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Ming-Hui Zhao
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Gui-An Huang
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Shen Yin
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Wei Shen
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Qing-Yuan Sun
- Fertility Preservation Lab and Guangdong-Hong Kong Metabolism & Reproduction Joint Laboratory, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou 510317, PR China
| | - Yong Zhao
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, PR China
| | - Zhao-Jia Ge
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, PR China.
| | - Lei Zhao
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, PR China.
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Blonde L, Umpierrez GE, Reddy SS, McGill JB, Berga SL, Bush M, Chandrasekaran S, DeFronzo RA, Einhorn D, Galindo RJ, Gardner TW, Garg R, Garvey WT, Hirsch IB, Hurley DL, Izuora K, Kosiborod M, Olson D, Patel SB, Pop-Busui R, Sadhu AR, Samson SL, Stec C, Tamborlane WV, Tuttle KR, Twining C, Vella A, Vellanki P, Weber SL. American Association of Clinical Endocrinology Clinical Practice Guideline: Developing a Diabetes Mellitus Comprehensive Care Plan-2022 Update. Endocr Pract 2022; 28:923-1049. [PMID: 35963508 PMCID: PMC10200071 DOI: 10.1016/j.eprac.2022.08.002] [Citation(s) in RCA: 154] [Impact Index Per Article: 77.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 08/01/2022] [Accepted: 08/02/2022] [Indexed: 02/06/2023]
Abstract
OBJECTIVE The objective of this clinical practice guideline is to provide updated and new evidence-based recommendations for the comprehensive care of persons with diabetes mellitus to clinicians, diabetes-care teams, other health care professionals and stakeholders, and individuals with diabetes and their caregivers. METHODS The American Association of Clinical Endocrinology selected a task force of medical experts and staff who updated and assessed clinical questions and recommendations from the prior 2015 version of this guideline and conducted literature searches for relevant scientific papers published from January 1, 2015, through May 15, 2022. Selected studies from results of literature searches composed the evidence base to update 2015 recommendations as well as to develop new recommendations based on review of clinical evidence, current practice, expertise, and consensus, according to established American Association of Clinical Endocrinology protocol for guideline development. RESULTS This guideline includes 170 updated and new evidence-based clinical practice recommendations for the comprehensive care of persons with diabetes. Recommendations are divided into four sections: (1) screening, diagnosis, glycemic targets, and glycemic monitoring; (2) comorbidities and complications, including obesity and management with lifestyle, nutrition, and bariatric surgery, hypertension, dyslipidemia, retinopathy, neuropathy, diabetic kidney disease, and cardiovascular disease; (3) management of prediabetes, type 2 diabetes with antihyperglycemic pharmacotherapy and glycemic targets, type 1 diabetes with insulin therapy, hypoglycemia, hospitalized persons, and women with diabetes in pregnancy; (4) education and new topics regarding diabetes and infertility, nutritional supplements, secondary diabetes, social determinants of health, and virtual care, as well as updated recommendations on cancer risk, nonpharmacologic components of pediatric care plans, depression, education and team approach, occupational risk, role of sleep medicine, and vaccinations in persons with diabetes. CONCLUSIONS This updated clinical practice guideline provides evidence-based recommendations to assist with person-centered, team-based clinical decision-making to improve the care of persons with diabetes mellitus.
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Affiliation(s)
| | | | - S Sethu Reddy
- Central Michigan University, Mount Pleasant, Michigan
| | | | | | | | | | | | - Daniel Einhorn
- Scripps Whittier Diabetes Institute, La Jolla, California
| | | | | | - Rajesh Garg
- Lundquist Institute/Harbor-UCLA Medical Center, Torrance, California
| | | | | | | | | | | | - Darin Olson
- Colorado Mountain Medical, LLC, Avon, Colorado
| | | | | | - Archana R Sadhu
- Houston Methodist; Weill Cornell Medicine; Texas A&M College of Medicine; Houston, Texas
| | | | - Carla Stec
- American Association of Clinical Endocrinology, Jacksonville, Florida
| | | | - Katherine R Tuttle
- University of Washington and Providence Health Care, Seattle and Spokane, Washington
| | | | | | | | - Sandra L Weber
- University of South Carolina School of Medicine-Greenville, Prisma Health System, Greenville, South Carolina
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7
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Xu H, Li J, Jin L, Zhang D, Chen B, Liu X, Lin X, Huang Y, Ke Z, Liu J, Gao L, Sheng J, Huang H. Intrauterine hyperglycemia impairs endometrial receptivity via up-regulating SGK1 in diabetes. SCIENCE CHINA. LIFE SCIENCES 2022; 65:1578-1589. [PMID: 35287185 DOI: 10.1007/s11427-021-2035-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
Diabetes is a complex metabolic disorder which can adversely affect reproductive function. SGK1 is found to be up-regulated in multiple tissues of diabetic patients. However, the effects of diabetes on endometrial SGK1 expression and endometrial receptivity remain unknown. In this study, we established a streptozotocin-induced diabetic mouse model and observed reduced implantation sites, retarded development of pinopodes, increased SGK1, and aberrant expression of LIF and MUC1 in the endometrial epithelium. We injected the uterine lumen of normal mice with high-glucose solution and cultured endometrial cells in high-glucose medium to mimic intrauterine hyperglycemia. Both studies provided compelling evidence that hyperglycemia could lead to diminished embryo implantation and dysregulated SGK1, LIF and MUC1. Additionally, through over-expression of SGK1 in vivo and in vitro, we found that enhanced SGK1 also decreased LIF expression, increased MUC1 expression, and attenuated embryo implantation rate. We further identified that hyperglycemia-activated SMAD2/3 might be responsible for the enhancement of SGK1 and verified directly the interaction between SMAD3 and corresponding SMAD binding elements within SGK1 promoter. Taken together, our study confirmed the association between diabetes-related hyperglycemia and endometrial receptivity defects. Hyperglycemia-induced SGK1 has a tremendous role in this pathological process, rendering it as an attractive therapeutic target for diabetes-related reproductive disorders.
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Affiliation(s)
- Haiyan Xu
- Reproductive Medicine Center, Ningbo First Hospital, Ningbo, 315100, China
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou, 310058, China
| | - Jingyi Li
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou, 310058, China
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China
| | - Luyang Jin
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou, 310058, China
| | - Dan Zhang
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou, 310058, China
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China
| | - Bin Chen
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou, 310058, China
| | - Xinmei Liu
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China
| | - Xianhua Lin
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China
| | - Yiting Huang
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou, 310058, China
| | - Zhanghong Ke
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou, 310058, China
| | - Juan Liu
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou, 310058, China
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China
| | - Lin Gao
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China
| | - Jianzhong Sheng
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou, 310058, China.
- Department of Pathology & Pathophysiology, Zhejiang University School of Medicine, Hangzhou, 310058, China.
| | - Hefeng Huang
- Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou, 310058, China.
- Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China.
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China.
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Dvoran M, Nemcova L, Kalous J. An Interplay between Epigenetics and Translation in Oocyte Maturation and Embryo Development: Assisted Reproduction Perspective. Biomedicines 2022; 10:biomedicines10071689. [PMID: 35884994 PMCID: PMC9313063 DOI: 10.3390/biomedicines10071689] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 12/11/2022] Open
Abstract
Germ cell quality is a key prerequisite for successful fertilization and early embryo development. The quality is determined by the fine regulation of transcriptomic and proteomic profiles, which are prone to alteration by assisted reproduction technology (ART)-introduced in vitro methods. Gaining evidence shows the ART can influence preset epigenetic modifications within cultured oocytes or early embryos and affect their developmental competency. The aim of this review is to describe ART-determined epigenetic changes related to the oogenesis, early embryogenesis, and further in utero development. We confront the latest epigenetic, related epitranscriptomic, and translational regulation findings with the processes of meiotic maturation, fertilization, and early embryogenesis that impact the developmental competency and embryo quality. Post-ART embryo transfer, in utero implantation, and development (placentation, fetal development) are influenced by environmental and lifestyle factors. The review is emphasizing their epigenetic and ART contribution to fetal development. An epigenetic parallel among mouse, porcine, and bovine animal models and human ART is drawn to illustrate possible future mechanisms of infertility management as well as increase the awareness of the underlying mechanisms governing oocyte and embryo developmental complexity under ART conditions.
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9
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Lu J, Zhao SX, Zhang MY, Ji PY, Chao S, Li LJ, Yin S, Zhao L, Zhao H, Sun QY, Ge ZJ. Tea polyphenols alleviate the adverse effects of diabetes on oocyte quality. Food Funct 2022; 13:5396-5405. [PMID: 35471225 DOI: 10.1039/d1fo03770f] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Maternal diabetes mellitus reduces oocyte quality, such as abnormalities of spindle assembly and chromosome segregation, mitochondrial dysfunction, decrease of fertilization rate, increase of ROS, and so on. So, it is important to research how to restore the decreased oocyte quality induced by maternal diabetes mellitus. Polyphenols are the most abundant bioactive components of green tea. It is reported that tea polyphenols have many health functions, for instance anti-oxidation, anti-inflammation, anti-obesity, and anti-diabetes. Thus, we hypothesize that tea polyphenols may play a crucial role in alleviating adverse effects of diabetes on oocyte quality. In the present study, we researched the effects of tea polyphenols on diabetic oocyte maturation in vitro. Compared with the control, oocytes from diabetic mice displayed a lower maturation rate and a higher frequency of spindle defects and chromosome misalignment. However, tea polyphenols significantly increased the oocyte maturation rate, and reduced the incidence of abnormal spindle assembly and chromosome segregation. Tea polyphenols also obviously decreased the reactive oxygen species (ROS) levels in diabetic oocytes, and increased the expression of antioxidant genes (Sod1 and Sod2). Abnormal mitochondrial membrane potential was also alleviated in diabetic oocytes, and the expression of genes regulating mitochondrial fusion (Opa1, Mfn1 and Mfn2) and fission (Drp1) was significantly increased while tea polyphenols were added. Meanwhile, tea polyphenols reduced DNA damage in diabetic oocytes which may be mediated by the increased expression of Rad51, related to DNA damage repair. Our results suggest that tea polyphenols would, at least partially, restore the adverse effects of diabetes mellitus on oocyte quality.
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Affiliation(s)
- Jun Lu
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Shu-Xian Zhao
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Man-Yu Zhang
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Peng-Yuan Ji
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Shuo Chao
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Li-Jun Li
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Shen Yin
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
| | - Lei Zhao
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, P. R. China
| | - Hua Zhao
- Reproductive Medicine Center, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou 450003, P. R. China
| | - Qing-Yuan Sun
- Fertility Preservation Lab and Guangdong-Hong Kong Metabolism & Reproduction Joint Laboratory, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou 510317, China.
| | - Zhao-Jia Ge
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, P. R. China.
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10
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Ge J, Zhang N, Tang S, Hu F, Hou X, Sun H, Han L, Wang Q. Loss of PDK1 Induces Meiotic Defects in Oocytes From Diabetic Mice. Front Cell Dev Biol 2022; 9:793389. [PMID: 34988082 PMCID: PMC8720995 DOI: 10.3389/fcell.2021.793389] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 11/16/2021] [Indexed: 01/02/2023] Open
Abstract
Maternal diabetes has been shown to impair oocyte quality; however, the underlying mechanisms remain unclear. Here, using a streptozotocin (STZ)-induced diabetic mouse model, we first detected and reduced expression of pyruvate dehydrogenase kinase 1 (PDK1) in diabetic oocytes, accompanying with the lowered phosphorylation of serine residue 232 on α subunit of the pyruvate dehydrogenase (PDH) complex (Ser232-PDHE1α). Importantly, forced expression of PDK1 not only elevated the phosphorylation level of Ser232-PDHE1α, but also partly prevented the spindle disorganization and chromosome misalignment in oocytes from diabetic mice, with no beneficial effects on metabolic dysfunction. Moreover, a phospho-mimetic S232D-PDHE1α mutant is also capable of ameliorating the maternal diabetes-associated meiotic defects. In sum, our data indicate that PDK1-controlled Ser232-PDHE1α phosphorylation pathway mediates the effects of diabetic environment on oocyte competence.
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Affiliation(s)
- Juan Ge
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Na Zhang
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Shoubin Tang
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Feifei Hu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaojing Hou
- Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child HealthCare Hospital, Nanjing, China
| | - Hongzheng Sun
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Longsen Han
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Qiang Wang
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China.,Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China
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11
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Okan A, Demir N, Sozen B. Unfolded protein response triggers differential apoptotic mechanisms in ovaries and early embryos exposed to maternal type 1 diabetes. Sci Rep 2021; 11:12759. [PMID: 34140543 PMCID: PMC8211688 DOI: 10.1038/s41598-021-92093-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 06/01/2021] [Indexed: 11/16/2022] Open
Abstract
Diabetes mellitus (DM) has profound effects on the female mammalian reproductive system, and early embryonic development, reducing female reproductive outcomes and inducing developmental programming in utero. However, the underlying cellular and molecular mechanisms remain poorly defined. Accumulating evidence implicates endoplasmic reticulum (ER)-stress with maternal DM associated pathophysiology. Yet the direct pathologies and causal events leading to ovarian dysfunction and altered early embryonic development have not been determined. Here, using an in vivo mouse model of Type 1 DM and in vitro hyperglycaemia-exposure, we demonstrate the activation of ER-stress within adult ovarian tissue and pre-implantation embryos. In diabetic ovaries, we show that the unfolded protein response (UPR) triggers an apoptotic cascade by the co-activation of Caspase 12 and Cleaved Caspase 3 transducers. Whereas DM-exposed early embryos display differential ER-associated responses; by activating Chop in within embryonic precursors and Caspase 12 within placental precursors. Our results offer new insights for understanding the pathological effects of DM on mammalian ovarian function and early embryo development, providing new evidence of its mechanistic link with ER-stress in mice.
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Affiliation(s)
- Aslı Okan
- Department of Histology and Embryology, School of Medicine, Akdeniz University, Antalya, 07070, Turkey
| | - Necdet Demir
- Department of Histology and Embryology, School of Medicine, Akdeniz University, Antalya, 07070, Turkey.
| | - Berna Sozen
- Department of Genetics, Yale School of Medicine, Yale University, New Haven, CT, 06510, USA.
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12
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Rogers HB, Zhou LT, Kusuhara A, Zaniker E, Shafaie S, Owen BC, Duncan FE, Woodruff TK. Dental resins used in 3D printing technologies release ovo-toxic leachates. CHEMOSPHERE 2021; 270:129003. [PMID: 33515896 PMCID: PMC7957323 DOI: 10.1016/j.chemosphere.2020.129003] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 10/31/2020] [Accepted: 11/15/2020] [Indexed: 06/02/2023]
Abstract
We recently engineered the first female reproductive tract on a chip (EVATAR), to enable sex-based ex vivo research. To increase the scalability and accessibility of EVATAR, we turned to 3D printing (3DP) technologies, selecting two biocompatible 3DP resins, Dental SG (DSG) and Dental LT (DLT) to generate 3DP microphysiologic platforms. Due to the known sensitivity of reproductive cells to leachable compounds, we first screened for toxicity of these biomaterials using an in vitro mammalian oocyte maturation assay. Culture of mouse oocytes in 3DP plates using conventionally treated DSG resin resulted in rapid oocyte degeneration. Oxygen plasma treatment of the surface of printed DSG resin prevented this degeneration, and the majority of the resulting oocytes progressed through meiosis in vitro. However, 57.0% ± 37.2% of the cells cultured in the DSG resin plates exhibited abnormal chromosome morphology compared to 19.4% ± 17.3% of controls cultured in polystyrene. All tested DLT resin conditions, including plasma treatment, resulted in complete and rapid oocyte degeneration. To identify the ovo-toxic component of DLT, we analyzed DLT leachate using mass spectroscopy. We identified Tinuvin 292, a commercial light stabilizer, as a major component of the DLT leachate, which resulted in a dose-dependent disruption of meiotic progression and increase in chromosomal abnormalities with oocyte exposure, showing significant ovo-toxicity in mammals. Severe reproductive toxicity induced by in vitro exposure to these 3D-printed resins highlights potential risks of deploying insufficiently characterized materials for biomedical applications and underscores the need for more rigorous evaluation and designation of biocompatible materials.
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Affiliation(s)
- Hunter B Rogers
- Department of Obstetrics and Gynecology, Northwestern University, Chicago, IL, 60611, USA
| | - Luhan T Zhou
- Department of Obstetrics and Gynecology, Northwestern University, Chicago, IL, 60611, USA
| | - Atsuko Kusuhara
- Department of Obstetrics and Gynecology, Northwestern University, Chicago, IL, 60611, USA
| | - Emily Zaniker
- Department of Obstetrics and Gynecology, Northwestern University, Chicago, IL, 60611, USA
| | - Saman Shafaie
- Integrated Molecular Structure Education and Research Center (IMSERC), Northwestern University, Evanston, IL, 60208, USA
| | - Benjamin C Owen
- Integrated Molecular Structure Education and Research Center (IMSERC), Northwestern University, Evanston, IL, 60208, USA
| | - Francesca E Duncan
- Department of Obstetrics and Gynecology, Northwestern University, Chicago, IL, 60611, USA.
| | - Teresa K Woodruff
- Department of Obstetrics and Gynecology, Northwestern University, Chicago, IL, 60611, USA.
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13
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Luo ZB, Xuan MF, Han SZ, Li ZY, Khan N, Quan BH, Yin XJ, Kang JD. Ginsenoside Rb1 protects porcine oocytes against methylglyoxal damage thus it improves the quality of parthenogenetic activation and in vitro fertilization embryos. ENVIRONMENTAL TOXICOLOGY 2021; 36:586-597. [PMID: 33236476 DOI: 10.1002/tox.23063] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 11/15/2020] [Indexed: 06/11/2023]
Abstract
Panax ginseng, a functional food, has been widely used as an edible nourishment and medicinal supplement. Ginsenoside Rb1 is a major bioactive ingredient of ginseng, which shows very specific anti-apoptosis and anti-oxidant activities. Methylglyoxal (MGO) is one of intermediate products of glucose metabolism, which is absorbed easily from high sugar foods or carbonated beverages. It may involve in a variety of detrimental processes in vivo. However, it has not been fully explored the effects of ginsenoside Rb1 on MGO-induced oocytes damage. This study found that MGO-induced DNA damage and mitochondrial dysfunction result in the failure of porcine oocytes maturation and low in vitro development capacity of parthenogenetic activation (PA) and in vitro fertilization (IVF) embryos. Conversely, Rb1 supplementation recovered the rate of maturation, and improved in vitro development capacity of PA and IVF embryos. Rb1 also provided porcine oocytes a lower level of reactive oxygen species production, higher level of ATP content and mitochondrial membrane potential, and stimulated pluripotency gene expression in blastocysts. The findings of this study reveal ginsenoside Rb1 protects porcine oocyte from the cytotoxicity effects of methylglyoxal and provides novel perspectives for the protection of reproduction system by functional food of ginseng.
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Affiliation(s)
- Zhao-Bo Luo
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Jilin, China
| | - Mei-Fu Xuan
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Jilin, China
| | - Sheng-Zhong Han
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Jilin, China
| | - Zhou-Yan Li
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Jilin, China
| | - Nasar Khan
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Jilin, China
| | - Biao-Hu Quan
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Jilin, China
| | - Xi-Jun Yin
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Jilin, China
| | - Jin-Dan Kang
- Jilin Provincial Key Laboratory of Transgenic Animal and Embryo Engineering, Yanbian University, Jilin, China
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14
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Pan MH, Zhu CC, Ju JQ, Xu Y, Luo SM, Sun SC, Ou XH. Single-cell transcriptome analysis reveals that maternal obesity affects DNA repair, histone methylation, and autophagy level in mouse embryos. J Cell Physiol 2020; 236:4944-4953. [PMID: 33368268 DOI: 10.1002/jcp.30201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 11/19/2020] [Accepted: 11/25/2020] [Indexed: 12/17/2022]
Abstract
Obesity causes many reproductive dysfunctions such as reduced conception, infertility, and early pregnancy loss, and this is largely due to the negative effects of obesity on oocyte and embryo quality. In the present study, we employed single-cell RNA transcriptome sequencing to investigate the potential causes for the maternal obesity effects on mouse embryos. Our results showed that the 4-cell and morula/blastocyst rates were all significantly decreased during embryo development in obese mice. Genome-wide analysis indicated that obesity altered the expression of more than 1100 genes in 2-cell embryos, including the genes which were related to the p53 signaling pathway and apoptosis. Further analysis showed that the expression of 47 genes related to DNA damage was changed, and a positive γH2A signal and the altered expression of Rad51 and Tex15 were observed in the obese embryos. Obesity also affected histone methylation, shown by the decrease of the H3K4-me2 level. Besides this, we observed the occurrence of autophagy and apoptosis in the embryos of obese mice. There were 42 genes that were related to autophagy/apoptosis that showed aberrant expression, and the positive LC3 signal and the decrease of Clec16a, Rraga, and Atg10 level were also observed. In summary, our study suggested that obesity affected early embryonic development by inducing DNA damage, aberrant histone methylation, and autophagy levels in mice.
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Affiliation(s)
- Meng-Hao Pan
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou, China.,College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Cheng-Cheng Zhu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Jia-Qian Ju
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yi Xu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Shi-Ming Luo
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Xiang-Hong Ou
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou, China
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15
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Xin Y, Jin Y, Ge J, Huang Z, Han L, Li C, Wang D, Zhu S, Wang Q. Involvement of SIRT3-GSK3β deacetylation pathway in the effects of maternal diabetes on oocyte meiosis. Cell Prolif 2020; 54:e12940. [PMID: 33107080 PMCID: PMC7791178 DOI: 10.1111/cpr.12940] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/16/2020] [Accepted: 10/03/2020] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVES It has been widely reported that maternal diabetes impairs oocyte quality. However, the responsible mechanisms remain to be explored. In the present study, we focused on whether SIRT3-GSK3β pathway mediates the meiotic defects in oocytes from diabetic mice. MATERIALS AND METHODS GSK3β functions in mouse oocyte meiosis were first detected by targeted siRNA knockdown. Spindle assembly and chromosome alignment were visualized by immunostaining and analysed under the confocal microscope. PCR-based site mutation of specific GSK3β lysine residues was used to confirm which lysine residues function in oocyte meiosis. siRNA knockdown coupled with cRNA overexpression was performed to detect SIRT3-GSK3β pathway functions in oocyte meiosis. Immunofluorescence was performed to detect ROS levels. T1DM mouse models were induced by a single intraperitoneal injection of streptozotocin. RESULTS In the present study, we found that specific depletion of GSK3β disrupts maturational progression and meiotic apparatus in mouse oocytes. By constructing site-specific mutants, we further revealed that acetylation state of lysine (K) 15 on GSK3β is essential for spindle assembly and chromosome alignment during oocyte meiosis. Moreover, non-acetylation-mimetic mutant GSK3β-K15R is capable of partly preventing the spindle/chromosome anomalies in oocytes with SIRT3 knockdown. A significant reduction in SIRT3 protein was detected in oocytes from diabetic mice. Of note, forced expression of GSK3β-K15R ameliorates maternal diabetes-associated meiotic defects in mouse oocytes, with no evident effects on oxidative stress. CONCLUSION Our data identify GSK3β as a cytoskeletal regulator that is required for the assembly of meiotic apparatus, and discover a beneficial effect of SIRT3-dependent GSK3β deacetylation on oocyte quality from diabetic mice.
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Affiliation(s)
- Yongan Xin
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Yifei Jin
- School of Nursing, Nanjing Medical University, Nanjing, China
| | - Juan Ge
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Zhenyue Huang
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Longsen Han
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Congyang Li
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Danni Wang
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Shuai Zhu
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Qiang Wang
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China.,Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China
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16
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Luo Y, Zhuan Q, Li J, Du X, Huang Z, Hou Y, Fu X. Procyanidin B2 Improves Oocyte Maturation and Subsequent Development in Type 1 Diabetic Mice by Promoting Mitochondrial Function. Reprod Sci 2020; 27:2211-2222. [PMID: 32748223 DOI: 10.1007/s43032-020-00241-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 06/06/2020] [Accepted: 06/15/2020] [Indexed: 12/12/2022]
Abstract
Type 1 diabetes (T1D) results in decreased oocyte quality and compromised early embryonic development. Procyanidin B2 (PB2) is a natural compound extracted from grape seeds and has strong antioxidant activity in vivo. This study evaluated the effect of PB2 on oocyte maturation in diabetic mice. Diabetic mice were induced by streptozotocin (STZ) injection. PB2 was supplemented in the in vitro maturation medium, and the ratio of germinal vesicle breakdown (GVBD) and polar body extrusion (PBE), reactive oxygen species (ROS) levels, mitochondrial function, developmental ability, as well as crotonylation at H4K5 were determined in oocytes. PB2 can promote the extrusion of PBE (88.34% vs. 75.02%, P < 0.05); reduce the generation of ROS (1.12 vs. 1.96, P < 0.05); and improve the level of mitochondrial membrane potential (0.87 vs. 0.79 Δφm, P < 0.05), ATP level (1.31 vs. 0.71 pmol, P < 0.05), and mitochondria temperature (618.25 vs. 697.39 pixels, P < 0.05). The addition of PB2 also improved the level of oocyte crotonylation at H4K5 (crH4K5) (47.26 vs. 59.68 pixels, P < 0.05) and increased the blastocyst rate (61.51% vs. 36.07%, P < 0.05) after parthenogenetic activation. Our results are the first to reveal a role for PB2 in promoting the viability of oocytes by regulating the mitochondrial function. Moreover, we uncover that PB2 can improve the level of crH4K5, which provides a new strategy to combat the decline in oocyte quality of diabetic.
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Affiliation(s)
- Yuxi Luo
- National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Qingrui Zhuan
- National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Jun Li
- Department of Reproductive Medicine, The First Hospital of Hebei Medical University, Shijiazhuang, 050031, Hebei, China
| | - Xingzhu Du
- National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Zhengyuan Huang
- Chelsea and Westminster Hospital, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, SW10 9NH, UK
| | - Yunpeng Hou
- State Key Laboratory of Agro biotechnology, College of Biological Sciences, China Agricultural University, Yuanmingyuan West Rd 2, Haidian District, Beijing, 100193, China
| | - Xiangwei Fu
- National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
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17
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Gyllenhammer LE, Entringer S, Buss C, Wadhwa PD. Developmental programming of mitochondrial biology: a conceptual framework and review. Proc Biol Sci 2020; 287:20192713. [PMID: 32345161 PMCID: PMC7282904 DOI: 10.1098/rspb.2019.2713] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Research on mechanisms underlying the phenomenon of developmental programming of health and disease has focused primarily on processes that are specific to cell types, organs and phenotypes of interest. However, the observation that exposure to suboptimal or adverse developmental conditions concomitantly influences a broad range of phenotypes suggests that these exposures may additionally exert effects through cellular mechanisms that are common, or shared, across these different cell and tissue types. It is in this context that we focus on cellular bioenergetics and propose that mitochondria, bioenergetic and signalling organelles, may represent a key cellular target underlying developmental programming. In this review, we discuss empirical findings in animals and humans that suggest that key structural and functional features of mitochondrial biology exhibit developmental plasticity, and are influenced by the same physiological pathways that are implicated in susceptibility for complex, common age-related disorders, and that these targets of mitochondrial developmental programming exhibit long-term temporal stability. We conclude by articulating current knowledge gaps and propose future research directions to bridge these gaps.
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Affiliation(s)
- Lauren E Gyllenhammer
- Development, Health and Disease Research Program, School of Medicine, Irvine, CA, USA.,Department of Pediatrics, School of Medicine, Irvine, CA, USA
| | - Sonja Entringer
- Development, Health and Disease Research Program, School of Medicine, Irvine, CA, USA.,Department of Pediatrics, School of Medicine, Irvine, CA, USA.,Charité-Universitätsmedizin Berlin, Institute of Medical Psychology, Berlin, Germany
| | - Claudia Buss
- Development, Health and Disease Research Program, School of Medicine, Irvine, CA, USA.,Department of Pediatrics, School of Medicine, Irvine, CA, USA.,Charité-Universitätsmedizin Berlin, Institute of Medical Psychology, Berlin, Germany
| | - Pathik D Wadhwa
- Development, Health and Disease Research Program, School of Medicine, Irvine, CA, USA.,Department of Pediatrics, School of Medicine, Irvine, CA, USA.,Department of Psychiatry and Human Behaviour, School of Medicine, Irvine, CA, USA.,Department of Obstetrics and Gynecology, School of Medicine, Irvine, CA, USA.,Department of Epidemiology, University of California, School of Medicine, Irvine, CA, USA
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18
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Makrinou E, Drong AW, Christopoulos G, Lerner A, Chapa-Chorda I, Karaderi T, Lavery S, Hardy K, Lindgren CM, Franks S. Genome-wide methylation profiling in granulosa lutein cells of women with polycystic ovary syndrome (PCOS). Mol Cell Endocrinol 2020; 500:110611. [PMID: 31600550 PMCID: PMC7116598 DOI: 10.1016/j.mce.2019.110611] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 08/20/2019] [Accepted: 10/04/2019] [Indexed: 02/08/2023]
Abstract
Polycystic Ovary Syndrome (PCOS) is the most common endocrine disorder amongst women of reproductive age, whose aetiology remains unclear. To improve our understanding of the molecular mechanisms underlying the disease, we conducted a genome-wide DNA methylation profiling in granulosa lutein cells collected from 16 women suffering from PCOS, in comparison to 16 healthy controls. Samples were collected by follicular aspiration during routine egg collection for IVF treatment. Study groups were matched for age and BMI, did not suffer from other disease and were not taking confounding medication. Comparing women with polycystic versus normal ovarian morphology, after correcting for multiple comparisons, we identified 106 differentially methylated CpG sites with p-values <5.8 × 10-8 that were associated with 88 genes, several of which are known to relate either to PCOS or to ovarian function. Replication and validation of the experiment was done using pyrosequencing to analyse six of the identified differentially methylated sites. Pathway analysis indicated potential disruption in canonical pathways and gene networks that are, amongst other, associated with cancer, cardiogenesis, Hedgehog signalling and immune response. In conclusion, these novel findings indicate that women with PCOS display epigenetic changes in ovarian granulosa cells that may be associated with the heterogeneity of the disorder.
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Affiliation(s)
- E Makrinou
- Imperial College London, Faculty of Medicine, Institute of Reproductive and Developmental Biology, London, W12 0NN, UK.
| | - A W Drong
- Big Data Institute at the Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, OX3 7LF, UK
| | - G Christopoulos
- IVF Unit, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, W12 0NN, UK
| | - A Lerner
- Imperial College London, Faculty of Medicine, Institute of Reproductive and Developmental Biology, London, W12 0NN, UK
| | - I Chapa-Chorda
- Imperial College London, Faculty of Medicine, Institute of Reproductive and Developmental Biology, London, W12 0NN, UK
| | - T Karaderi
- Wellcome Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK; Department of Biological Sciences, Faculty of Arts and Sciences, Eastern Mediterranean University, Famagusta, Cyprus
| | - S Lavery
- IVF Unit, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, W12 0NN, UK
| | - K Hardy
- Imperial College London, Faculty of Medicine, Institute of Reproductive and Developmental Biology, London, W12 0NN, UK
| | - C M Lindgren
- Big Data Institute at the Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, OX3 7LF, UK; Wellcome Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK; Program in Medical and Population Genetics, Broad Institute, Cambridge, MA, USA
| | - S Franks
- Imperial College London, Faculty of Medicine, Institute of Reproductive and Developmental Biology, London, W12 0NN, UK
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19
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In Vivo and In Vitro Models of Diabetes: A Focus on Pregnancy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1307:553-576. [PMID: 32504388 DOI: 10.1007/5584_2020_536] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Diabetes in pregnancy is associated with an increased risk of poor outcomes, both for the mother and her offspring. Although clinical and epidemiological studies are invaluable to assess these outcomes and the effectiveness of potential treatments, there are certain ethical and practical limitations to what can be assessed in human studies.Thus, both in vivo and in vitro models can aid us in the understanding of the mechanisms behind these complications and, in the long run, towards their prevention and treatment. This review summarizes the existing animal and cell models used to mimic diabetes, with a specific focus on the intrauterine environment. Summary of this review.
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20
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Lee J, Lee HC, Kim SY, Cho GJ, Woodruff TK. Poorly-Controlled Type 1 Diabetes Mellitus Impairs LH-LHCGR Signaling in the Ovaries and Decreases Female Fertility in Mice. Yonsei Med J 2019; 60:667-678. [PMID: 31250581 PMCID: PMC6597468 DOI: 10.3349/ymj.2019.60.7.667] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/23/2019] [Accepted: 05/07/2019] [Indexed: 12/11/2022] Open
Abstract
PURPOSE The aim of this study was to investigate how type I diabetes mellitus (T1D) affects the folliculogenesis and oocyte development, fertilization, and embryo development. MATERIALS AND METHODS A comparative animal study was conducted using two different mouse models of T1D, a genetic AKITA model and a streptozotocin-induced diabetes model. Ovarian function was assessed by gross observation, immunoblot, immunohistochemistry, oocyte counting, and ELISA for serum hormones (insulin, anti-Mullerian hormone, estradiol, testosterone, and progesterone). Maturation and developmental competence of metaphase II oocytes from control and T1D animals was evaluated by immunofluorescent and immunohistochemical detection of biomarkers and in vitro fertilization. RESULTS Animals from both T1D models showed increased blood glucose levels, while only streptozotocin (STZ)-injected mice showed reduced body weight. Folliculogenesis, oogenesis, and preimplantation embryogenesis were impaired in both T1D mouse models. Interestingly, exogenous streptozotocin injection to induce T1D led to marked decreases in ovary size, expression of luteinizing hormone/chorionic gonadotropin receptor in the ovaries, the number of corpora lutea per ovary, oocyte maturation, and serum progesterone levels. Both T1D models exhibited significantly reduced pre-implantation embryo quality compared with controls. There was no significant difference in embryo quality between STZ-injected and AKITA diabetic mice. CONCLUSION These results suggest that T1D affects folliculogenesis, oogenesis, and embryo development in mice. However, the physiological mechanisms underlying the observed reproductive effects of diabetes need to be further investigated.
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Affiliation(s)
- Jaewang Lee
- Department of Biomedical Laboratory Science, College of Health Science, Eulji University, Seongnam, Korea
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Hoi Chang Lee
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - So Youn Kim
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, and Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
| | - Geum Joon Cho
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
- Department of Obstetrics and Gynecology, Korea University College of Medicine, Seoul, Korea
| | - Teresa K Woodruff
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
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21
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Martin JH, Aitken RJ, Bromfield EG, Cafe SL, Sutherland JM, Frost ER, Nixon B, Lord T. Investigation into the presence and functional significance of proinsulin C-peptide in the female germline†. Biol Reprod 2019; 100:1275-1289. [PMID: 30715203 DOI: 10.1093/biolre/ioz008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 12/10/2018] [Accepted: 01/28/2019] [Indexed: 08/02/2024] Open
Abstract
Diabetes is associated with poor oocyte quality and the dysregulation of ovarian function and is thus a leading contributor to the increasing prevalence of female reproductive pathologies. Accordingly, it is well-established that insulin fulfills a key role in the regulation of several facets of female reproduction. What remains less certain is whether proinsulin C-peptide, which has recently been implicated in cellular signaling cascades, holds a functional role in the female germline. In the present study, we examined the expression of insulin, C-peptide, and its purported receptor; GPR146, within the mouse ovary and oocyte. Our data establish the presence of abundant C-peptide within follicular fluid and raise the prospect that this bioactive peptide is internalized by oocytes in a G-protein coupled receptor-dependent manner. Further, our data reveal that internalized C-peptide undergoes pronounced subcellular relocalization from the ooplasm to the pronuclei postfertilization. The application of immunoprecipitation analysis and mass spectrometry identified breast cancer type 2 susceptibility protein (BRCA2), the meiotic resumption/DNA repair protein, as a primary binding partner for C-peptide within the oocyte. Collectively, these findings establish a novel accumulation profile for C-peptide in the female germline and provide the first evidence for an interaction between C-peptide and BRCA2. This interaction is particularly intriguing when considering the propensity for oocytes from diabetic women to experience aberrant meiotic resumption and perturbation of traditional DNA repair processes. This therefore provides a clear imperative for further investigation of the implications of dysregulated C-peptide production in these individuals.
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Affiliation(s)
- Jacinta H Martin
- Priority Research Centre for Reproductive Science, Discipline of Biological Sciences, The Hunter Medical Research Institute, New Lambton Heights and the University of Newcastle, Callaghan, Newcastle, Australia
| | - R John Aitken
- Priority Research Centre for Reproductive Science, Discipline of Biological Sciences, The Hunter Medical Research Institute, New Lambton Heights and the University of Newcastle, Callaghan, Newcastle, Australia
| | - Elizabeth G Bromfield
- Priority Research Centre for Reproductive Science, Discipline of Biological Sciences, The Hunter Medical Research Institute, New Lambton Heights and the University of Newcastle, Callaghan, Newcastle, Australia
| | - Shenae L Cafe
- Priority Research Centre for Reproductive Science, Discipline of Biological Sciences, The Hunter Medical Research Institute, New Lambton Heights and the University of Newcastle, Callaghan, Newcastle, Australia
| | - Jessie M Sutherland
- Priority Research Centre for Reproductive Science, Discipline of Biological Sciences, The Hunter Medical Research Institute, New Lambton Heights and the University of Newcastle, Callaghan, Newcastle, Australia
| | - Emily R Frost
- Priority Research Centre for Reproductive Science, Discipline of Biological Sciences, The Hunter Medical Research Institute, New Lambton Heights and the University of Newcastle, Callaghan, Newcastle, Australia
| | - Brett Nixon
- Priority Research Centre for Reproductive Science, Discipline of Biological Sciences, The Hunter Medical Research Institute, New Lambton Heights and the University of Newcastle, Callaghan, Newcastle, Australia
| | - Tessa Lord
- Priority Research Centre for Reproductive Science, Discipline of Biological Sciences, The Hunter Medical Research Institute, New Lambton Heights and the University of Newcastle, Callaghan, Newcastle, Australia
- School of Molecular Biosciences, Centre for Reproductive Biology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
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22
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Akbari Sene A, Tabatabaie A, Nikniaz H, Alizadeh A, Sheibani K, Mortezapour Alisaraie M, Tabatabaie M, Ashrafi M, Amjadi F. The myo-inositol effect on the oocyte quality and fertilization rate among women with polycystic ovary syndrome undergoing assisted reproductive technology cycles: a randomized clinical trial. Arch Gynecol Obstet 2019; 299:1701-1707. [PMID: 30919036 DOI: 10.1007/s00404-019-05111-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 03/04/2019] [Indexed: 01/05/2023]
Abstract
PURPOSE The aim of the present study was to evaluate the effect of myo-Inositol administration on oocyte quality, fertilization rate and embryo quality in patients with PCOS during assisted reproductive technology (ART) cycles. METHODS Fifty infertile PCOS patients were randomly designated in two groups. In the study group, patients received daily doses of 4 g myo-Inositol combined with 400 mg folic acid and in the control group patients received only 400 mg folic acid from 1 month before starting the antagonist cycle until the day of ovum pick up. Oocyte and embryo qualities were assessed according to European Society of Human Reproduction and Embryology (ESHRE) guidelines. The gene expression of PGK1, RGS2 and CDC42 as a factor of oocyte quality in granulosa cells was analyzed using real-time RT-PCR. Levels of total antioxidant capacity (TAC) and reactive oxygen species (ROS) were evaluated by chemiluminescence assay in follicular fluid. RESULTS The percentage of metaphase II oocyte, fertilization rate and embryo quality significantly improved in the study group (p < 0.05), but the number of retrieved oocytes and follicle count were not statistically different between groups. Furthermore, the gene expression of PGK1, RGS2 and CDC42 was significantly higher in the study group (p < 0.05) but no differences were found between two groups in terms of TAC and ROS levels. CONCLUSIONS The present study findings suggest that myo-Inositol alters the gene expression in granulosa cells and improves oocyte and embryo quality among PCOS patients undergoing ART.
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Affiliation(s)
- Azadeh Akbari Sene
- Shahid Akbarabadi Clinical Research Development Unit (ShACRDU), Iran University of Medical Sciences, PO Box: 15875-1454, 1168743514, Tehran, Iran
| | - Azam Tabatabaie
- Shahid Akbarabadi Clinical Research Development Unit (ShACRDU), Iran University of Medical Sciences, PO Box: 15875-1454, 1168743514, Tehran, Iran
| | - Hossein Nikniaz
- Department of Anatomy, School of Medicine Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Ahad Alizadeh
- Department of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | | | - Mona Mortezapour Alisaraie
- Shahid Akbarabadi Clinical Research Development Unit (ShACRDU), Iran University of Medical Sciences, PO Box: 15875-1454, 1168743514, Tehran, Iran
| | - Maryam Tabatabaie
- Shahid Akbarabadi Clinical Research Development Unit (ShACRDU), Iran University of Medical Sciences, PO Box: 15875-1454, 1168743514, Tehran, Iran
| | - Mahnaz Ashrafi
- Shahid Akbarabadi Clinical Research Development Unit (ShACRDU), Iran University of Medical Sciences, PO Box: 15875-1454, 1168743514, Tehran, Iran.,Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Fatemehsadat Amjadi
- Shahid Akbarabadi Clinical Research Development Unit (ShACRDU), Iran University of Medical Sciences, PO Box: 15875-1454, 1168743514, Tehran, Iran. .,Department of Anatomy, School of Medicine Sciences, Iran University of Medical Sciences, Tehran, Iran.
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23
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Zhou LT, Romar R, Pavone ME, Soriano-Úbeda C, Zhang J, Slawson C, Duncan FE. Disruption of O-GlcNAc homeostasis during mammalian oocyte meiotic maturation impacts fertilization. Mol Reprod Dev 2019; 86:543-557. [PMID: 30793403 DOI: 10.1002/mrd.23131] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 01/04/2019] [Accepted: 01/28/2019] [Indexed: 12/22/2022]
Abstract
Meiotic maturation and fertilization are metabolically demanding processes, and thus the mammalian oocyte is highly susceptible to changes in nutrient availability. O-GlcNAcylation-the addition of a single sugar residue (O-linked β-N-acetylglucosamine) on proteins-is a posttranslational modification that acts as a cellular nutrient sensor and likely modulates the function of oocyte proteins. O-GlcNAcylation is mediated by O-GlcNAc transferase (OGT), which adds O-GlcNAc onto proteins, and O-GlcNAcase (OGA), which removes it. Here we investigated O-GlcNAcylation dynamics in bovine and human oocytes during meiosis and determined the developmental sequelae of its perturbation. OGA, OGT, and multiple O-GlcNAcylated proteins were expressed in bovine cumulus oocyte complexes (COCs), and they were localized throughout the gamete but were also enriched at specific subcellular sites. O-GlcNAcylated proteins were concentrated at the nuclear envelope at prophase I, OGA at the cortex throughout meiosis, and OGT at the meiotic spindles. These expression patterns were evolutionarily conserved in human oocytes. To examine O-GlcNAc function, we disrupted O-GlcNAc cycling during meiotic maturation in bovine COCs using Thiamet-G (TMG), a highly selective OGA inhibitor. Although TMG resulted in a dramatic increase in O-GlcNAcylated substrates in both cumulus cells and the oocyte, there was no effect on cumulus expansion or meiotic progression. However, zygote development was significantly compromised following in vitro fertilization of COCs matured in TMG due to the effects on sperm penetration, sperm head decondensation, and pronuclear formation. Thus, proper O-GlcNAc homeostasis during meiotic maturation is important for fertilization and pronuclear stage development.
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Affiliation(s)
- Luhan T Zhou
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Raquel Romar
- Department of Physiology, Faculty of Veterinary Science, University of Murcia, Murcia, Spain
| | - Mary Ellen Pavone
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Cristina Soriano-Úbeda
- Department of Physiology, Faculty of Veterinary Science, University of Murcia, Murcia, Spain
| | - John Zhang
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Chad Slawson
- Department of Biochemistry and Molecular Biology, University of Kansas Medical School, Kansas City, Kansas
| | - Francesca E Duncan
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
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24
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Wang Q, Tang SB, Song XB, Deng TF, Zhang TT, Yin S, Luo SM, Shen W, Zhang CL, Ge ZJ. High-glucose concentrations change DNA methylation levels in human IVM oocytes. Hum Reprod 2019; 33:474-481. [PMID: 29377995 DOI: 10.1093/humrep/dey006] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 01/12/2018] [Indexed: 01/01/2023] Open
Abstract
STUDY QUESTION What are the effects of high-glucose concentrations on DNA methylation of human oocytes? SUMMARY ANSWER High-glucose concentrations altered DNA methylation levels of Peg3 and Adiponectin in human in vitro maturation oocytes. WHAT IS KNOWN ALREADY Maternal diabetes has a detrimental influence on oocyte quality including epigenetic modifications, as shown in non-human mammalian species. STUDY DESIGN, SIZE, DURATION Immature metaphase I (MI) stage oocytes of good quality were retrieved from patients who had normal ovarian potential and who underwent ICSI in the Reproductive Medicine Center of People's Hospital of Zhengzhou University. MI oocytes were cultured in medium with different glucose concentrations (control, 10 mM and 15 mM) in vitro and 48 h later, oocytes with first polar body extrusion were collected to check the DNA methylation levels. PARTICIPANTS/MATERIALS, SETTING, METHODS MI oocytes underwent in vitro maturation (IVM) at 37°C with 5% mixed gas for 48 h. Then the mature oocytes were treated with bisulfite buffer. Target sequences were amplified using nested or half-nested PCR and the DNA methylation status was tested using combined bisulfite restriction analysis (COBRA) and bisulfite sequencing (BS). MAIN RESULTS AND THE ROLE OF CHANCE High-glucose concentrations significantly decreased the first polar body extrusion rate. Compared to controls, the DNA methylation levels of Peg3 in human IVM oocytes were significantly higher in 10 mM (P < 0.001) and 15 mM (P < 0.001) concentrations of glucose. But the DNA methylation level of H19 was not affected by high-glucose concentrations in human IVM oocytes. We also found that there was a decrease in DNA methylation levels in the promoter of adiponectin in human IVM oocytes between controls and oocytes exposed to 10 mM glucose (P = 0.028). LARGE SCALE DATA N/A. LIMITATIONS REASONS FOR CAUTION It is not clear whether the alterations are beneficial or not for the embryo development and offspring health. The effects of high-glucose concentrations on the whole process of oocyte maturation are still not elucidated. Another issue is that the number of oocytes used in this study was limited. WIDER IMPLICATIONS OF THE FINDINGS This is the first time that the effects of high-glucose concentration on DNA methylation of human oocytes have been elucidated. Our result indicates that in humans, the high risk of chronic diseases in offspring from diabetic mothers may originate from abnormal DNA modifications in oocytes. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by the fund of National Natural Science Foundation of China (81401198) and Doctor Foundation of Qingdao Agricultural University (1116008).The authors declare that there are no potential conflicts of interest relevant to this article.
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Affiliation(s)
- Qian Wang
- Reproductive Medicine Center of People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan Province, P.R. China.,Reproductive Medicine Center of Henan Provincial People's Hospital, Zhengzhou 450003, Henan Province, P.R. China
| | - Shou-Bin Tang
- Department of Biology, College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, 700# Changcheng Road, Chengyang District, Qingdao 266109, P.R. China
| | - Xiao-Bing Song
- Reproductive Medicine Center of People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan Province, P.R. China.,Reproductive Medicine Center of Henan Provincial People's Hospital, Zhengzhou 450003, Henan Province, P.R. China
| | - Teng-Fei Deng
- Reproductive Medicine Center of People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan Province, P.R. China.,Reproductive Medicine Center of Henan Provincial People's Hospital, Zhengzhou 450003, Henan Province, P.R. China
| | - Ting-Ting Zhang
- Reproductive Medicine Center of People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan Province, P.R. China.,Reproductive Medicine Center of Henan Provincial People's Hospital, Zhengzhou 450003, Henan Province, P.R. China
| | - Shen Yin
- Department of Biology, College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, 700# Changcheng Road, Chengyang District, Qingdao 266109, P.R. China
| | - Shi-Ming Luo
- Department of Biology, College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, 700# Changcheng Road, Chengyang District, Qingdao 266109, P.R. China
| | - Wei Shen
- Department of Biology, College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, 700# Changcheng Road, Chengyang District, Qingdao 266109, P.R. China
| | - Cui-Lian Zhang
- Reproductive Medicine Center of People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan Province, P.R. China.,Reproductive Medicine Center of Henan Provincial People's Hospital, Zhengzhou 450003, Henan Province, P.R. China
| | - Zhao-Jia Ge
- Department of Biology, College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, 700# Changcheng Road, Chengyang District, Qingdao 266109, P.R. China
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25
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Ou X, Zhu C, Sun S. Effects of obesity and diabetes on the epigenetic modification of mammalian gametes. J Cell Physiol 2018; 234:7847-7855. [DOI: 10.1002/jcp.27847] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 11/15/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Xiang‐Hong Ou
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital Guangzhou China
| | - Cheng‐Cheng Zhu
- College of Animal Science and Technology, Nanjing Agricultural University Nanjing China
- Nanjing Police Dog Institute of the Ministry of Public Security Nanjing China
| | - Shao‐Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University Nanjing China
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26
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Jing Y, Li L, Li Y, Ouyang Y, Sun Q, Zhang C, Li R. Embryo quality, and not chromosome nondiploidy, affects mitochondrial DNA content in mouse blastocysts. J Cell Physiol 2018; 234:10481-10488. [PMID: 30480815 DOI: 10.1002/jcp.27713] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Accepted: 10/16/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Ying Jing
- Reproductive Medicine Center, The People's Hospital of Zhengzhou University Zhengzhou China
- Reproductive Medicine Center, The People's Hospital of Henan Province Zhengzhou China
- State Key Laboratory of Stem Cell and Reproductive Biology Institute of Zoology, Chinese Academy of Sciences Beijing China
| | - Li Li
- State Key Laboratory of Stem Cell and Reproductive Biology Institute of Zoology, Chinese Academy of Sciences Beijing China
| | - Yuan‐Yuan Li
- State Key Laboratory of Stem Cell and Reproductive Biology Institute of Zoology, Chinese Academy of Sciences Beijing China
| | - Ying‐Chun Ouyang
- State Key Laboratory of Stem Cell and Reproductive Biology Institute of Zoology, Chinese Academy of Sciences Beijing China
| | - Qing‐Yuan Sun
- State Key Laboratory of Stem Cell and Reproductive Biology Institute of Zoology, Chinese Academy of Sciences Beijing China
| | - Cui‐Lian Zhang
- Reproductive Medicine Center, The People's Hospital of Zhengzhou University Zhengzhou China
- Reproductive Medicine Center, The People's Hospital of Henan Province Zhengzhou China
| | - Rong Li
- Department of Obstetrics and Gynecology Center for Reproductive Medicine, Peking University Third Hospital Beijing China
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27
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Li L, Wu CS, Hou GM, Dong MZ, Wang ZB, Hou Y, Schatten H, Zhang GR, Sun QY. Type 2 diabetes increases oocyte mtDNA mutations which are eliminated in the offspring by bottleneck effect. Reprod Biol Endocrinol 2018; 16:110. [PMID: 30390692 PMCID: PMC6215660 DOI: 10.1186/s12958-018-0423-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/14/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Diabetes induces many complications including reduced fertility and low oocyte quality, but whether it causes increased mtDNA mutations is unknown. METHODS We generated a T2D mouse model by using high-fat-diet (HFD) and Streptozotocin (STZ) injection. We examined mtDNA mutations in oocytes of diabetic mice by high-throughput sequencing techniques. RESULTS T2D mice showed glucose intolerance, insulin resistance, low fecundity compared to the control group. T2D oocytes showed increased mtDNA mutation sites and mutation numbers compared to the control counterparts. mtDNA mutation examination in F1 mice showed that the mitochondrial bottleneck could eliminate mtDNA mutations. CONCLUSIONS T2D mice have increased mtDNA mutation sites and mtDNA mutation numbers in oocytes compared to the counterparts, while these adverse effects can be eliminated by the bottleneck effect in their offspring. This is the first study using a small number of oocytes to examine mtDNA mutations in diabetic mothers and offspring.
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Affiliation(s)
- Li Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100101, China
| | - Chang-Sheng Wu
- Peking Medriv Academy of Genetics and Reproduction, Beijing, 102629, China
| | - Guan-Mei Hou
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- College of Life Science, Qingdao Agricultural University, Qingdao, 266109, China
| | - Ming-Zhe Dong
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100101, China
| | - Zhen-Bo Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100101, China
| | - Yi Hou
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Heide Schatten
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, 65211, USA
| | - Gui-Rong Zhang
- Peking Medriv Academy of Genetics and Reproduction, Beijing, 102629, China.
| | - Qing-Yuan Sun
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
- University of Chinese Academy of Sciences, Beijing, 100101, China.
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28
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Long-term apoptosis-related protein expression in the diabetic mouse ovary. PLoS One 2018; 13:e0203268. [PMID: 30192809 PMCID: PMC6128485 DOI: 10.1371/journal.pone.0203268] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Accepted: 08/19/2018] [Indexed: 02/06/2023] Open
Abstract
Emerging evidence has shown that oocytes from diabetic ovaries exhibit delayed maturation, mitochondrial dysfunction and meiotic defects, which are related increased apoptosis. The main objective of the present study was to analyze the apoptosis pathways activated during follicular loss at multiple time points in a diabetic mouse model. Twenty BALB/c mice were used in this study, and diabetes mellitus was induced by streptozotocin injection. Three diabetic and two control animals were sacrificed on days 15, 20, 70 and 80 posttreatment. The ovaries were then removed; one was used for follicular counting, TUNEL, immunohistochemistry and immunofluorescence, while the other was used for Western blot analysis. The proteins studied were BAX, BCL2, t-BID, FAS, FASL, active caspase 8, active caspase 9 and active caspase 3. Follicular apoptosis decreased over time, with the highest values observed at 15 days posttreatment. Granulosa cells were positive for active caspase 3, which showed constant expression levels at all time points. FAS, FASL, t-BID and active caspase 8 showed strong cytoplasmic immunostaining in the oocytes and granulosa cells of the diabetic mice, with significant increases observed at 15, 20 and 70 days posttreatment. BAX expression was slightly higher in the diabetic mouse ovaries than in the control ovaries at 15, 20 and 70 days posttreatment, whereas the highest active caspase 9 expression was at observed 20 days posttreatment. Low BCL2 protein levels were detected in the diabetic mouse ovaries at all time points. This study describes for the first time the behavior of apoptosis-related proteins in the diabetic mouse ovary and shows not only that the FAS/FASL pathway contributes to follicular loss but also that antral follicles are the most affected.
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29
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Craven L, Tang MX, Gorman GS, De Sutter P, Heindryckx B. Novel reproductive technologies to prevent mitochondrial disease. Hum Reprod Update 2018. [PMID: 28651360 DOI: 10.1093/humupd/dmx018] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The use of nuclear transfer (NT) has been proposed as a novel reproductive treatment to overcome the transmission of maternally-inherited mitochondrial DNA (mtDNA) mutations. Pathogenic mutations in mtDNA can cause a wide-spectrum of life-limiting disorders, collectively known as mtDNA disease, for which there are currently few effective treatments and no known cures. The many unique features of mtDNA make genetic counselling challenging for women harbouring pathogenic mtDNA mutations but reproductive options that involve medical intervention are available that will minimize the risk of mtDNA disease in their offspring. This includes PGD, which is currently offered as a clinical treatment but will not be suitable for all. The potential for NT to reduce transmission of mtDNA mutations has been demonstrated in both animal and human models, and has recently been clinically applied not only to prevent mtDNA disease but also for some infertility cases. In this review, we will interrogate the different NT techniques, including a discussion on the available safety and efficacy data of these technologies for mtDNA disease prevention. In addition, we appraise the evidence for the translational use of NT technologies in infertility. OBJECTIVE AND RATIONALE We propose to review the current scientific evidence regarding the clinical use of NT to prevent mitochondrial disease. SEARCH METHODS The scientific literature was investigated by searching PubMed database until Jan 2017. Relevant documents from Human Fertilisation and Embryology Authority as well as reports from both the scientific and popular media were also implemented. The above searches were based on the following key words: 'mitochondria', 'mitochondrial DNA'; 'mitochondrial DNA disease', 'fertility'; 'preimplantation genetic diagnosis', 'nuclear transfer', 'mitochondrial replacement' and 'mitochondrial donation'. OUTCOMES While NT techniques have been shown to effectively reduce the transmission of heteroplasmic mtDNA variants in animal models, and increasing evidence supports their use to prevent the transmission of human mtDNA disease, the need for robust, long-term evaluation is still warranted. Moreover, prenatal screening would still be strongly advocated in combination with the use of these IVF-based technologies. Scientific evidence to support the use of NT and other novel reproductive techniques for infertility is currently lacking. WIDER IMPLICATIONS It is mandatory that any new ART treatments are first adequately assessed in both animal and human models before the cautious implementation of these new therapeutic approaches is clinically undertaken. There is growing evidence to suggest that the translation of these innovative technologies into clinical practice should be cautiously adopted only in highly selected patients. Indeed, given the limited safety and efficacy data, close monitoring of any offspring remains paramount.
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Affiliation(s)
- Lyndsey Craven
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, The Medical School, Framlington Place, Newcastle upon Tyne, NE2 4HH, UK
| | - Mao-Xing Tang
- Ghent-Fertility and Stem Cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
| | - Gráinne S Gorman
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, The Medical School, Framlington Place, Newcastle upon Tyne, NE2 4HH, UK
| | - Petra De Sutter
- Ghent-Fertility and Stem Cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
| | - Björn Heindryckx
- Ghent-Fertility and Stem Cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
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30
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Liu X, Zhang L, Wang P, Li X, Qiu D, Li L, Zhang J, Hou X, Han L, Ge J, Li M, Gu L, Wang Q. Sirt3-dependent deacetylation of SOD2 plays a protective role against oxidative stress in oocytes from diabetic mice. Cell Cycle 2017; 16:1302-1308. [PMID: 28662362 DOI: 10.1080/15384101.2017.1320004] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Maternal diabetes has been demonstrated to adversely affect oocyte quality in mouse oocytes. However, the potential molecular mechanisms are poorly understood. Here, we established a type I diabetic mouse model and detected the increased reactive oxygen species (ROS) levels and decreased Sirt3 expression in oocytes from diabetic mice. Furthermore, we found that forced expression of Sirt3 in diabetic oocytes significantly attenuates such an excessive production of ROS. The acetylation status of lysine 68 of superoxide dismutase (SOD2K68) is dependent on Sirt3 in oocytes. In line with this, SOD2K68 acetylation levels were markedly increased in diabetic oocytes, and Sirt3 overexpression could effectively suppress this tendency. Importantly, the deacetylation-mimetic mutant SOD2K68R is capable of partly preventing the oxidative stress in oocytes from diabetic mice. In conclusion, our findings support a model where Sirt3 plays a protective role against oxidative stress in oocytes exposed to maternal diabetes through deacetylating SOD2K68.
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Affiliation(s)
- Xiaohui Liu
- a College of Animal Science & Technology , Nanjing Agricultural University , Nanjing.,b State Key Laboratory of Reproductive Medicine , Nanjing Medical University , Nanjing
| | | | - Pan Wang
- d Center for Reproductive Medicine , Peking University Third Hospital , Beijing , China
| | - Xiaoyan Li
- a College of Animal Science & Technology , Nanjing Agricultural University , Nanjing
| | - Danhong Qiu
- b State Key Laboratory of Reproductive Medicine , Nanjing Medical University , Nanjing
| | - Ling Li
- b State Key Laboratory of Reproductive Medicine , Nanjing Medical University , Nanjing
| | - Jiaqi Zhang
- b State Key Laboratory of Reproductive Medicine , Nanjing Medical University , Nanjing
| | - Xiaojing Hou
- b State Key Laboratory of Reproductive Medicine , Nanjing Medical University , Nanjing
| | - Longsen Han
- b State Key Laboratory of Reproductive Medicine , Nanjing Medical University , Nanjing
| | - Juan Ge
- b State Key Laboratory of Reproductive Medicine , Nanjing Medical University , Nanjing
| | - Mo Li
- d Center for Reproductive Medicine , Peking University Third Hospital , Beijing , China
| | - Ling Gu
- a College of Animal Science & Technology , Nanjing Agricultural University , Nanjing
| | - Qiang Wang
- b State Key Laboratory of Reproductive Medicine , Nanjing Medical University , Nanjing
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Zhang K, Smith GW. Maternal control of early embryogenesis in mammals. Reprod Fertil Dev 2017; 27:880-96. [PMID: 25695370 DOI: 10.1071/rd14441] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/10/2015] [Indexed: 12/11/2022] Open
Abstract
Oocyte quality is a critical factor limiting the efficiency of assisted reproductive technologies (ART) and pregnancy success in farm animals and humans. ART success is diminished with increased maternal age, suggesting a close link between poor oocyte quality and ovarian aging. However, the regulation of oocyte quality remains poorly understood. Oocyte quality is functionally linked to ART success because the maternal-to-embryonic transition (MET) is dependent on stored maternal factors, which are accumulated in oocytes during oocyte development and growth. The MET consists of critical developmental processes, including maternal RNA depletion and embryonic genome activation. In recent years, key maternal proteins encoded by maternal-effect genes have been determined, primarily using genetically modified mouse models. These proteins are implicated in various aspects of early embryonic development, including maternal mRNA degradation, epigenetic reprogramming, signal transduction, protein translation and initiation of embryonic genome activation. Species differences exist in the number of cell divisions encompassing the MET and maternal-effect genes controlling this developmental window. Perturbations of maternal control, some of which are associated with ovarian aging, result in decreased oocyte quality.
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Affiliation(s)
- Kun Zhang
- Laboratory of Mammalian Reproductive Biology and Genomics, Michigan State University, East Lansing, MI 48824, USA
| | - George W Smith
- Laboratory of Mammalian Reproductive Biology and Genomics, Michigan State University, East Lansing, MI 48824, USA
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Galactose and its Metabolites Deteriorate Metaphase II Mouse Oocyte Quality and Subsequent Embryo Development by Disrupting the Spindle Structure. Sci Rep 2017; 7:231. [PMID: 28331195 PMCID: PMC5427935 DOI: 10.1038/s41598-017-00159-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 02/13/2017] [Indexed: 11/23/2022] Open
Abstract
Premature ovarian insufficiency (POI) is a frequent long-term complication of classic galactosemia. The majority of women with this disorder develop POI, however rare spontaneous pregnancies have been reported. Here, we evaluate the effect of D-galactose and its metabolites, galactitol and galactose 1-phosphate, on oocyte quality as well as embryo development to elucidate the mechanism through which these compounds mediate oocyte deterioration. Metaphase II mouse oocytes (n = 240), with and without cumulus cells (CCs), were exposed for 4 hours to D-galactose (2 μM), galactitol (11 μM) and galactose 1-phosphate (0.1 mM), (corresponding to plasma concentrations in patients on galactose-restricted diet) and compared to controls. The treated oocytes showed decreased quality as a function of significant enhancement in production of reactive oxygen species (ROS) when compared to controls. The presence of CCs offered no protection, as elevated ROS was accompanied by increased apoptosis of CCs. Our results suggested that D-galactose and its metabolites disturbed the spindle structure and chromosomal alignment, which was associated with significant decline in oocyte cleavage and blastocyst development after in-vitro fertilization. The results provide insight into prevention and treatment strategies that may be used to extend the window of fertility in these patients.
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Hanafi MY, Abdelkhalek TM, Saad MI, Saleh MM, Haiba MM, Kamel MA. Diabetes-induced perturbations are subject to intergenerational transmission through maternal line. J Physiol Biochem 2016; 72:315-26. [PMID: 27038466 DOI: 10.1007/s13105-016-0483-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 03/21/2016] [Indexed: 01/09/2023]
Abstract
The hypothesis of fetal origins of adult disease states that early life events program the occurrence of significant adult diseases, including diabetes and obesity. Maternal diabetes is associated with general stress environment for developing fetus, and gestational diabetes is an independent risk factor for type 2 diabetes and metabolic syndrome in offspring. Intra-uterine fetal programming of fetal tissues exposes the offspring to increased risk of impaired glucose tolerance, type 2 diabetes, and cardiovascular disease. Here, we examined the transmission of maternal diabetes-induced fetal programming in second generation and compared maternal and paternal routes of intergenerational effects. We organized 40 Wistar rats into three groups, male offspring of diabetic mothers, female offspring of diabetic mothers, and offspring of control mothers. These groups were mated with normal healthy rats to assess the effect of grand-maternal diabetes on pregnancy outcome in F2 rats, as well as glucose-sensing parameters, insulin resistance, and glucose tolerance prenatally and postnatally. We found that F2 offspring of diabetic mothers had impaired glucose sensing, increased oxidative stress, insulin resistance, and impaired glucose tolerance, and these effects were more prominent in the F2 offspring of F1 female rats (F2-DF1F). We deduce that fetal programming of maternal diabetes is mostly transmitted through maternal line across two generations.
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MESH Headings
- Adipose Tissue/embryology
- Adipose Tissue/metabolism
- Animals
- Diabetes Mellitus, Experimental/blood
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Experimental/physiopathology
- Diabetes Mellitus, Type 2/blood
- Diabetes Mellitus, Type 2/etiology
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Female
- Fetal Development
- Gene Expression Regulation, Developmental
- Glucose Intolerance/blood
- Glucose Intolerance/etiology
- Glucose Intolerance/metabolism
- Glucose Intolerance/pathology
- Insulin Resistance
- Insulin-Secreting Cells/metabolism
- Insulin-Secreting Cells/pathology
- Liver/embryology
- Liver/metabolism
- Male
- Maternal Inheritance
- Mitochondrial Dynamics
- Muscle, Skeletal/embryology
- Muscle, Skeletal/metabolism
- Organelle Biogenesis
- Oxidative Stress
- Pancreas/embryology
- Pancreas/metabolism
- Pancreas/pathology
- Pregnancy
- Pregnancy Complications/blood
- Pregnancy Complications/metabolism
- Pregnancy Complications/pathology
- Pregnancy Complications/physiopathology
- Rats, Wistar
- Streptozocin
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Affiliation(s)
- Mervat Y Hanafi
- Department of Biochemistry, Medical Research Institute, Alexandria University, 165 Elhorreya, Avenue, P.O. Box 21561, Alexandria, Egypt
| | - Taha M Abdelkhalek
- Department of Human Genetics, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Mohamed I Saad
- Department of Biochemistry, Medical Research Institute, Alexandria University, 165 Elhorreya, Avenue, P.O. Box 21561, Alexandria, Egypt.
- The Ritchie Centre, Hudson Institute of Medical Research, Monash University, Melbourne, Victoria, Australia.
| | - Moustafa M Saleh
- Department of Human Genetics, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Maha M Haiba
- Department of Biochemistry, Medical Research Institute, Alexandria University, 165 Elhorreya, Avenue, P.O. Box 21561, Alexandria, Egypt
| | - Maher A Kamel
- Department of Biochemistry, Medical Research Institute, Alexandria University, 165 Elhorreya, Avenue, P.O. Box 21561, Alexandria, Egypt
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Khan SN, Shaeib F, Thakur M, Jeelani R, Awonuga AO, Goud PT, Abu-Soud HM. Peroxynitrite deteriorates oocyte quality through disassembly of microtubule organizing centers. Free Radic Biol Med 2016; 91:275-80. [PMID: 26746586 DOI: 10.1016/j.freeradbiomed.2015.12.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 12/23/2015] [Accepted: 12/29/2015] [Indexed: 11/24/2022]
Abstract
Previous theoretical studies have suggested that utilization of 3-D imaging to acquire morphologic parameters of meiotic spindles may be useful in infertility related procedures as an assessment of oocyte quality. However, our results show that treatment of oocytes with increasing concentrations of peroxynitrite (ONOO(-)) caused a dramatic alteration in spindle shape in which morphologic parameters are not measurable or are uninformative in terms of oocyte quality. Metaphase II mouse oocytes (n=520) were treated with increasing concentrations of ONOO(-), after which all oocytes were fixed and subjected to indirect immunofluorescence. Oocyte quality was assessed by alterations in the microtubule-organizing center (MTOC), pericentrin location, microtubule morphology, and chromosomal alignment. In untreated oocytes, pericentrin is primarily assembled utilizing the acentrosomal MTOC, which appears as a condensation at both spindle poles. The spindle has a symmetrical pointed barrel shape, assembled around the chromosomal plate at the spindle equator. Oocytes treated with low concentrations of ONOO(-) (<2.5 μM) showed shortening of the spindle apparatus, while pericentrin scatters from a tight condensation to a dispersed cluster around each spindle pole. At higher ONOO(-) concentrations (>2.5μM) the central attachments between microtubules are strained and bend or unevenly break, and the MTOC proteins are further dispersed or undetectable. Peroxynitrite mediated MTOC damage, which deranges the chromosomal scaffold at the time of assembly and separation, caused the deterioration in oocyte quality. These results provide a link between reactive oxygen species and poor reproductive outcomes and elucidate the underlying etiology, which could be used as a superior biomarker for oocyte quality compared to existing assessment tools.
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Affiliation(s)
- Sana N Khan
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA
| | - Faten Shaeib
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA
| | - Mili Thakur
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA
| | - Roohi Jeelani
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA
| | - Awoniyi O Awonuga
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA
| | - Pravin T Goud
- Department of Obstetrics and gynecology, Division of Reproductive Endocrinology and Infertility, University of California Davis, Sacramento, CA, USA; California IVF Fertility Center, Davis and Sacramento, USA
| | - Husam M Abu-Soud
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA; Department of Biochemistry and Molecular Biology, Wayne State University School of Medicine, Detroit, MI 48202, USA.
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35
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Edwards N, Farookhi R, Clarke HJ. Identification of a β-galactosidase transgene that provides a live-cell marker of transcriptional activity in growing oocytes and embryos. Mol Hum Reprod 2015; 21:583-93. [PMID: 25882542 PMCID: PMC4487448 DOI: 10.1093/molehr/gav020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 03/27/2015] [Accepted: 04/09/2015] [Indexed: 01/14/2023] Open
Abstract
Identifying the events and molecular mechanisms that regulate oocyte growth has emerged as a key objective of research in human fertility, fuelled by evidence from human and animal studies indicating that disease and environmental factors can act on oocytes to affect the health of the resulting individual and by efforts to grow oocytes in vitro to enable fertility preservation of cancer survivors. Techniques that monitor the development of growing oocytes would be valuable tools to assess the progression of growth under different conditions. Most methods used to assess oocytes grown in vitro are indirect, however, relying on characteristics of the somatic compartment of the follicle, or compromise the oocyte, preventing its subsequent culture or fertilization. We investigated the utility of T-cell factor/lymphoid enhancer-binding factor (TCF/Lef)-LacZ transgene expression as a predictor of global transcriptional activity in oocytes and early embryos. Using a fluorescent β-galactosidase substrate combined with live-cell imaging, we show that TCF/Lef-LacZ transgene expression is detectable in growing oocytes, lost in fully grown oocytes and resumes in late two-cell embryos. Transgene expression is likely regulated by a Wnt-independent mechanism. Using chromatin analysis, LacZ expression and methods to monitor and inhibit transcription, we show that TCF/Lef-LacZ expression mirrors transcriptional activity in oocytes and preimplantation embryos. Oocytes and preimplantation embryos that undergo live-cell imaging for TCF/Lef-LacZ expression are able to continue development in vitro. TCF/Lef-LacZ reporter expression in living oocytes and early embryos is thus a sensitive and faithful marker of transcriptional activity that can be used to monitor and optimize conditions for oocyte growth.
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Affiliation(s)
- Nicole Edwards
- Department of Obstetrics and Gynecology, McGill University, Montreal, QC, Canada Department of Physiology, McGill University, Montreal, QC, Canada Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Riaz Farookhi
- Department of Obstetrics and Gynecology, McGill University, Montreal, QC, Canada Department of Physiology, McGill University, Montreal, QC, Canada Research Institute of the McGill University Health Centre, Montreal, QC, Canada Department of Experimental Medicine, McGill University, Montreal, QC, Canada
| | - Hugh J Clarke
- Department of Obstetrics and Gynecology, McGill University, Montreal, QC, Canada Research Institute of the McGill University Health Centre, Montreal, QC, Canada Department of Experimental Medicine, McGill University, Montreal, QC, Canada Department of Biology, McGill University, Montreal, QC, Canada
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Abstract
PURPOSE OF REVIEW Mitochondria are cellular organelles that are required for energy production. Emerging evidence demonstrates their role in oocyte development and reproduction. In this review, we examine recent animal and clinical studies on the role of mitochondria in fertility. We also analyse the impact of assisted reproductive techniques (ARTs) on mitochondrial function and discuss the future clinical implications of mitochondrial nutrients and mitochondrial replacement. RECENT FINDINGS Mitochondria affect all aspects of mammalian reproduction. They are essential for optimal oocyte maturation, fertilization and embryonic development. Mitochondrial dysfunction causes a decrease in oocyte quality and interferes with embryonic development. ART procedures affect mitochondrial function, while mitochondrial nutrients may increase mitochondrial performance in oocytes. New mitochondrial replacement procedures using mitochondria obtained from polar bodies or from the patient's own oogonial stem cells are promising and may address concerns related to the induction of high-levels of heteroplasmy, which could potentially result in negative long-term health effects. SUMMARY Optimal energy production is required for oocyte and embryo development, and mitochondrial abnormalities have devastating reproductive consequences. Improvement of oocyte mitochondrial function via intake of compounds that boost mitochondrial activity may have clinical benefits, and mitochondrial replacement could potentially be used for the prevention of mitochondrial diseases.
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Affiliation(s)
- Elnur Babayev
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, USA
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37
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Stress signaling in mammalian oocytes and embryos: a basis for intervention and improvement of outcomes. Cell Tissue Res 2015; 363:159-167. [PMID: 25743689 DOI: 10.1007/s00441-015-2124-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 12/30/2014] [Indexed: 10/23/2022]
Abstract
Oocytes and early stage embryos are highly sensitive to variation in diverse exogenous factors such as temperature, osmolarity, oxygen, nutrient restriction, pH, shear stress, toxins, amino acid availability, and lipids. It is becoming increasingly apparent that many such factors negatively affect the endoplasmic reticulum, protein synthesis and protein processing, initiating ER stress and unfolded protein responses. As a result, ER stress signaling serves as a common mediator of cellular responses to diverse stressors. In oocytes and embryos, this leads to developmental arrest and epigenetic changes. Recent studies have revealed that preventing ER stress or inhibiting ER stress signaling can preserve or even enhance oocyte and embryo developmental potential. This review examines ER stress signaling, how it arises, how it affects oocytes and embryos, and how its occurrence can be managed or prevented.
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38
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Endoplasmic reticulum stress signaling in mammalian oocytes and embryos: life in balance. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2015; 316:227-65. [PMID: 25805126 DOI: 10.1016/bs.ircmb.2015.01.005] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mammalian oocytes and embryos are exquisitely sensitive to a wide range of insults related to physical stress, chemical exposure, and exposures to adverse maternal nutrition or health status. Although cells manifest specific responses to various stressors, many of these stressors intersect at the endoplasmic reticulum (ER), where disruptions in protein folding and production of reactive oxygen species initiate downstream signaling events. These signals modulate mRNA translation and gene transcription, leading to recovery, activation of autophagy, or with severe and prolonged stress, apoptosis. ER stress signaling has recently come to the fore as a major contributor to embryo demise. Accordingly, agents that modulate or inhibit ER stress signaling have yielded beneficial effects on embryo survival and long-term developmental potential. We review here the mechanisms of ER stress signaling, their connections to mammalian oocytes and embryos, and the promising indications that interventions in this pathway may provide new opportunities for improving mammalian reproduction and health.
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39
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Oocyte environment: follicular fluid and cumulus cells are critical for oocyte health. Fertil Steril 2014; 103:303-16. [PMID: 25497448 DOI: 10.1016/j.fertnstert.2014.11.015] [Citation(s) in RCA: 388] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 11/08/2014] [Accepted: 11/10/2014] [Indexed: 02/06/2023]
Abstract
Bidirectional somatic cell-oocyte signaling is essential to create a changing intrafollicular microenvironment that controls primordial follicle growth into a cohort of growing follicles, from which one antral follicle is selected to ovulate a healthy oocyte. Such intercellular communications allow the oocyte to determine its own fate by influencing the intrafollicular microenvironment, which in turn provides the necessary cellular functions for oocyte developmental competence, which is defined as the ability of the oocyte to complete meiosis and undergo fertilization, embryogenesis, and term development. These coordinated somatic cell-oocyte interactions attempt to balance cellular metabolism with energy requirements during folliculogenesis, including changing energy utilization during meiotic resumption. If these cellular mechanisms are perturbed by metabolic disease and/or maternal aging, molecular damage of the oocyte can alter macromolecules, induce mitochondrial mutations, and reduce adenosine triphosphate production, all of which can harm the oocyte. Recent technologies are now exploring transcriptional, translational, and post-translational events within the human follicle with the goal of identifying biomarkers that reliably predict oocyte quality in the clinical setting.
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40
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Schatten H, Sun QY, Prather R. The impact of mitochondrial function/dysfunction on IVF and new treatment possibilities for infertility. Reprod Biol Endocrinol 2014; 12:111. [PMID: 25421171 PMCID: PMC4297407 DOI: 10.1186/1477-7827-12-111] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 09/04/2014] [Indexed: 11/12/2022] Open
Abstract
Mitochondria play vital roles in oocyte functions and they are critical indicators of oocyte quality which is important for fertilization and development into viable offspring. Quality-compromised oocytes are correlated with infertility, developmental disorders, reduced blastocyst cell number and embryo loss in which mitochondrial dysfunctions play a significant role. Increasingly, women affected by metabolic disorders such as diabetes or obesity and oocyte aging are seeking treatment in IVF clinics to overcome the effects of adverse metabolic conditions on mitochondrial functions and new treatments have become available to restore oocyte quality. The past decade has seen enormous advances in potential therapies to restore oocyte quality and includes dietary components and transfer of mitochondria from cells with mitochondrial integrity into mitochondria-impaired oocytes. New technologies have opened up new possibilities for therapeutic advances which will increase the success rates for IVF of oocytes from women with compromised oocyte quality.
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Affiliation(s)
- Heide Schatten
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO USA
| | - Qing-Yuan Sun
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 100080 Beijing, China
| | - Randall Prather
- National Swine Resource and Research Center, University of Missouri, 65211 Columbia, USA
- Division of Animal Science, University of Missouri, 65211 Columbia, USA
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41
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Hastie R, Lappas M. The effect of pre-existing maternal obesity and diabetes on placental mitochondrial content and electron transport chain activity. Placenta 2014; 35:673-83. [PMID: 25002362 DOI: 10.1016/j.placenta.2014.06.368] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 06/14/2014] [Accepted: 06/17/2014] [Indexed: 01/30/2023]
Abstract
INTRODUCTION Mitochondria dysfunction has been extensively implicated in the progression of these metabolic disorders, their role in placental tissue of diabetic and/or obese pregnant women is yet to be investigated. The aim of this study was to determine the effect of pre-existing type 1 and type 2 diabetes mellitus (DM), and pre-existing maternal obesity on placental mitochondrial function as assessed by mitochondrial content, electron transport chain (ETC) complex activities and oxidative stress. METHODS Human placenta was obtained at the time of term Caesarean section from (i) non-obese (n = 19) and obese (n = 23) normal glucose tolerant (NGT) pregnant women; (ii) women with type 1 DM (n = 14) and BMI-matched NGT women (n = 14); and (iii) women with type 2 DM (n = 11) and BMI-matched NGT women (n = 11). The following endpoints were assessed: placental mitochondrial content by citrate synthase activity and mitochondrial DNA (mtDNA content); mitochondrial respiratory chain activity (complexes I, II, II & III, III and IV), and mitochondrial ROS (as assessed by mitochondrial hydrogen peroxide (H2O2) levels). RESULTS When compared to placenta from NGT non-obese women, there was significantly lower mitochondrial DNA (mtDNA) content and electron transport chain complex I activity, and significantly higher mitochondrial H2O2 levels in placenta from NGT obese women (P < 0.05). Placental tissue from type 1 DM women showed significant reductions in ETC complex I, II & III, and III activity and increased H2O2 levels when compared to BMI-matched NGT women (P < 0.05). Type 2 DM women only exhibited significantly reduced ETC complex II & III activity when compared to BMI-matched NGT women (P < 0.05). DISCUSSION AND CONCLUSIONS Women with pre-existing obesity or diabetes have decreased placental mitochondrial respiratory chain enzyme activities which may have detrimental consequences on placental function and therefore fetal growth and development.
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Affiliation(s)
- R Hastie
- Obstetrics, Nutrition and Endocrinology Group, Department of Obstetrics and Gynaecology, University of Melbourne, Mercy Hospital for Women, Heidelberg, Victoria, Australia; Mercy Perinatal Research Centre, Mercy Hospital for Women, Heidelberg, Victoria, Australia
| | - M Lappas
- Obstetrics, Nutrition and Endocrinology Group, Department of Obstetrics and Gynaecology, University of Melbourne, Mercy Hospital for Women, Heidelberg, Victoria, Australia; Mercy Perinatal Research Centre, Mercy Hospital for Women, Heidelberg, Victoria, Australia.
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42
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Kamel MA, Helmy MH, Hanafi MY, Mahmoud SA, Abo Elfetooh H. Impaired peripheral glucose sensing in F1 offspring of diabetic pregnancy. J Physiol Biochem 2014; 70:685-99. [PMID: 24895245 DOI: 10.1007/s13105-014-0338-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2013] [Accepted: 05/19/2014] [Indexed: 01/15/2023]
Abstract
Maternal diabetes can induce permanent changes in glucose homeostasis that can occur pre- and post-natal and leads to type 2 diabetes in adulthood. This study aimed to investigate the effect of maternal diabetes on the F1 offspring peripheral glucose sensing and mitochondrial biogenesis in an attempt to clarify the mechanism of diabetogenic programming. Two groups of female Wistar rats were used (diabetic and control); diabetes was neonatally induced by STZ injection to 5-day old rats. After the pregnancy and delivery, the offspring were weaned to control diet or high-caloric (HCD) diet and followed up for 30 weeks. Every 5 weeks, OGTT was constructed, and serum and tissues were obtained for the assessment of mTFA, mtDNA, UCP2, insulin receptor (IR), phospho-insulin receptor (phospho-IR), and GLUT4. The result indicated impaired glucose tolerance (IGT) and insulin resistance in the offspring under control diet at the 15th week of age and thereafter while those offspring under HCD showed IGT at 10th week, and diabetes was evidenced at the 25th week of age. This defect in glucose metabolism was preceded by impairment in the phosphorylation of IR and decreased IR and Glut4 that cause impaired glucose sensing together with inhibited mitochondrial biogenesis in muscle and adipose tissues. This study indicated that maternal diabetes caused impaired glucose sensing and insulin resistance in the peripheral tissues and caused change in the expression of genes involved in mitochondrial biogenesis and function. Post-natal feeding with HCD may accelerate these changes. Male F1 offspring appears to be more sensitive than females for fetal programming of T2D.
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MESH Headings
- Adipose Tissue/metabolism
- Animals
- Animals, Newborn
- DNA, Mitochondrial/genetics
- DNA, Mitochondrial/metabolism
- Diabetes Mellitus, Experimental/etiology
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/metabolism
- Diabetes, Gestational/metabolism
- Diet
- Energy Intake
- Female
- Gene Expression
- Glucose/metabolism
- Glucose Tolerance Test
- Glucose Transporter Type 4/metabolism
- Insulin Resistance
- Ion Channels/genetics
- Male
- Mitochondria/metabolism
- Mitochondrial Proteins/genetics
- Muscle, Skeletal/metabolism
- Pregnancy
- Pregnancy in Diabetics/metabolism
- Prenatal Exposure Delayed Effects/etiology
- Prenatal Exposure Delayed Effects/genetics
- Prenatal Exposure Delayed Effects/metabolism
- Rats
- Rats, Wistar
- Receptor, Insulin/metabolism
- Uncoupling Protein 2
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Affiliation(s)
- Maher A Kamel
- Department of Biochemistry, Medical Research Institute, Alexandria University, 165 El-Horreya Street, Alexandria, Egypt,
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43
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Frank LA, Sutton-McDowall ML, Gilchrist RB, Thompson JG. The effect of peri-conception hyperglycaemia and the involvement of the hexosamine biosynthesis pathway in mediating oocyte and embryo developmental competence. Mol Reprod Dev 2014; 81:391-408. [DOI: 10.1002/mrd.22299] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Accepted: 12/31/2013] [Indexed: 12/12/2022]
Affiliation(s)
- Laura A. Frank
- The Robinson Institute, The Research Centre for Reproductive Health, School of Paediatrics and Reproductive Health, The University of Adelaide; Adelaide South Australia Australia
| | - Melanie L. Sutton-McDowall
- The Robinson Institute, The Research Centre for Reproductive Health, School of Paediatrics and Reproductive Health, The University of Adelaide; Adelaide South Australia Australia
| | - Robert B. Gilchrist
- The Robinson Institute, The Research Centre for Reproductive Health, School of Paediatrics and Reproductive Health, The University of Adelaide; Adelaide South Australia Australia
| | - Jeremy G. Thompson
- The Robinson Institute, The Research Centre for Reproductive Health, School of Paediatrics and Reproductive Health, The University of Adelaide; Adelaide South Australia Australia
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44
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Abstract
The insulin/insulin-like growth factor (IGF) pathways and glucose metabolism act as mediators of human ovarian function and female fertility. In normal insulin action, insulin binds to its own receptors in the ovary to mediate steroidogenesis and act as a co-gonadotropin. Insulin with other factors may influence ovarian growth and cyst formation. The IGF pathway also seems to influence normal ovarian function. Insulin signaling affects reproductive function. Dysregulation of this pathway leads to altered puberty, ovulation, and fertility. Better understanding of the normal physiology and pathophysiology of insulin, IGF, and glucose effects on the human reproductive system will allow for better outcomes.
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Affiliation(s)
- Anindita Nandi
- Division of Endocrinology and Metabolism, Beth Israel Medical Center, Albert Einstein College of Medicine, 317 East 17th Street, 7th Floor, New York, NY 10003, USA
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45
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Jimenez PT, Frolova AI, Chi MM, Grindler NM, Willcockson AR, Reynolds KA, Zhao Q, Moley KH. DHEA-mediated inhibition of the pentose phosphate pathway alters oocyte lipid metabolism in mice. Endocrinology 2013; 154:4835-44. [PMID: 24036000 PMCID: PMC3836065 DOI: 10.1210/en.2012-2140] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Women with polycystic ovary syndrome (PCOS) and hyperandrogenism have altered hormone levels and suffer from ovarian dysfunction leading to subfertility. We have attempted to generate a model of hyperandrogenism by feeding mice chow supplemented with dehydroepiandrosterone (DHEA), an androgen precursor that is often elevated in women with PCOS. Treated mice had polycystic ovaries, low ovulation rates, disrupted estrous cycles, and altered hormone levels. Because DHEA is an inhibitor of glucose-6-phosphate dehydrogenase, the rate-limiting enzyme in the pentose phosphate pathway, we tested the hypothesis that oocytes from DHEA-exposed mice would have metabolic disruptions. Citrate levels, glucose-6-phosphate dehydrogenase activity, and lipid content in denuded oocytes from these mice were significantly lower than controls, suggesting abnormal tricarboxylic acid and pentose phosphate pathway metabolism. The lipid and citrate effects were reversible by supplementation with nicotinic acid, a precursor for reduced nicotinamide adenine dinucleotide phosphate. These findings suggest that elevations in systemic DHEA can have a negative impact on oocyte metabolism and may contribute to poor pregnancy outcomes in women with hyperandrogenism and PCOS.
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Affiliation(s)
- Patricia T Jimenez
- 425 South Euclid Avenue, BJC Institute of Health, Box 8064, St Louis, MO 63110.
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Association of maternal mRNA and phosphorylated EIF4EBP1 variants with the spindle in mouse oocytes: localized translational control supporting female meiosis in mammals. Genetics 2013; 195:349-58. [PMID: 23852387 DOI: 10.1534/genetics.113.154005] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In contrast to other species, localized maternal mRNAs are not believed to be prominent features of mammalian oocytes. We find by cDNA microarray analysis enrichment for maternal mRNAs encoding spindle and other proteins on the mouse oocyte metaphase II (MII) spindle. We also find that the key translational regulator, EIF4EBP1, undergoes a dynamic and complex spatially regulated pattern of phosphorylation at sites that regulate its association with EIF4E and its ability to repress translation. These phosphorylation variants appear at different positions along the spindle at different stages of meiosis. These results indicate that dynamic spatially restricted patterns of EIF4EBP1 phosphorylation may promote localized mRNA translation to support spindle formation, maintenance, function, and other nearby processes. Regulated EIF4EBP1 phosphorylation at the spindle may help coordinate spindle formation with progression through the cell cycle. The discovery that EIF4EBP1 may be part of an overall mechanism that integrates and couples cell cycle progression to mRNA translation and subsequent spindle formation and function may be relevant to understanding mechanisms leading to diminished oocyte quality, and potential means of avoiding such defects. The localization of maternal mRNAs at the spindle is evolutionarily conserved between mammals and other vertebrates and is also seen in mitotic cells, indicating that EIF4EBP1 control of localized mRNA translation is likely key to correct segregation of genetic material across cell types.
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Dames S, Chou LS, Xiao Y, Wayman T, Stocks J, Singleton M, Eilbeck K, Mao R. The development of next-generation sequencing assays for the mitochondrial genome and 108 nuclear genes associated with mitochondrial disorders. J Mol Diagn 2013; 15:526-34. [PMID: 23665194 DOI: 10.1016/j.jmoldx.2013.03.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 03/08/2013] [Accepted: 03/15/2013] [Indexed: 01/25/2023] Open
Abstract
Sanger sequencing of multigenic disorders can be technically challenging, time consuming, and prohibitively expensive. High-throughput next-generation sequencing (NGS) can provide a cost-effective method for sequencing targeted genes associated with multigenic disorders. We have developed a NGS clinical targeted gene assay for the mitochondrial genome and for 108 selected nuclear genes associated with mitochondrial disorders. Mitochondrial disorders have a reported incidence of 1 in 5000 live births, encompass a broad range of phenotypes, and are attributed to mutations in the mitochondrial and nuclear genomes. Approximately 20% of mitochondrial disorders result from mutations in mtDNA, with the remaining 80% found in nuclear genes that affect mtDNA levels or mitochondrion protein assembly. In our NGS approach, the 16,569-bp mtDNA is enriched by long-range PCR and the 108 nuclear genes (which represent 1301 amplicons and 680 kb) are enriched by RainDance emulsion PCR. Sequencing is performed on Illumina HiSeq 2000 or MiSeq platforms, and bioinformatics analysis is performed using commercial and in-house developed bioinformatics pipelines. A total of 16 validation and 13 clinical samples were examined. All previously reported variants associated with mitochondrial disorders were found in validation samples, and 5 of the 13 clinical samples were found to have mutations associated with mitochondrial disorders in either the mitochondrial genome or the 108 nuclear genes. All variants were confirmed by Sanger sequencing.
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Affiliation(s)
- Shale Dames
- Institute for Clinical and Experimental Pathology, ARUP Laboratories, Salt Lake City, UT 84108, USA.
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Siebel S, Solomon B. Mitochondrial Factors and VACTERL Association-Related Congenital Malformations. Mol Syndromol 2013; 4:63-73. [PMID: 23653577 PMCID: PMC3638779 DOI: 10.1159/000346301] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
VACTERL/VATER association is a group of congenital malformations characterized by at least 3 of the following findings: vertebral defects, anal atresia, cardiac defects, tracheo-esophageal fistula, renal anomalies, and limb abnormalities. To date, no unifying etiology for VACTERL/VATER association has been established, and there is strong evidence for causal heterogeneity. VACTERL/VATER association has many overlapping characteristics with other congenital disorders that involve multiple malformations. In addition to these other conditions, some of which have known molecular causes, certain aspects of VACTERL/VATER association have similarities with the manifestations of disorders caused by mitochondrial dysfunction. Mitochondrial dysfunction can result from a number of distinct causes and can clinically manifest in diverse presentations; accurate diagnosis can be challenging. Case reports of individuals with VACTERL association and confirmed mitochondrial dysfunction allude to the possibility of mitochondrial involvement in the pathogenesis of VACTERL/VATER association. Further, there is biological plausibility involving mitochondrial dysfunction as a possible etiology related to a diverse group of congenital malformations, including those seen in at least a subset of individuals with VACTERL association.
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Affiliation(s)
| | - B.D. Solomon
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Md., USA
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Schelbach CJ, Robker RL, Bennett BD, Gauld AD, Thompson JG, Kind KL. Altered pregnancy outcomes in mice following treatment with the hyperglycaemia mimetic, glucosamine, during the periconception period. Reprod Fertil Dev 2013; 25:405-16. [DOI: 10.1071/rd11313] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Accepted: 03/31/2012] [Indexed: 01/29/2023] Open
Abstract
Exposure of cumulus–oocyte complexes to the hyperglycaemia mimetic, glucosamine, during in vitro maturation impairs embryo development, potentially through upregulation of the hexosamine biosynthesis pathway. This study examined the effects of in vivo periconception glucosamine exposure on reproductive outcomes in young healthy mice, and further assessed the effects in overweight mice fed a high-fat diet. Eight-week-old mice received daily glucosamine injections (20 or 400 mg kg–1) for 3–6 days before and 1 day after mating (periconception). Outcomes were assessed at Day 18 of gestation. Glucosamine treatment reduced litter size independent of dose. A high-fat diet (21% fat) for 11 weeks before and during pregnancy reduced fetal size. No additional effects of periconception glucosamine (20 mg kg–1) on pregnancy outcomes were observed in fat-fed mice. In 16-week-old mice fed the control diet, glucosamine treatment reduced fetal weight and increased congenital abnormalities, but did not alter litter size. As differing effects of glucosamine were observed in 8-week-old and 16-week-old mice, maternal age effects were assessed. Periconception glucosamine at 8 weeks reduced litter size, whereas glucosamine at 16 weeks reduced fetal size. Thus, in vivo periconception glucosamine exposure perturbs reproductive outcomes in mice, with the nature of the outcomes dependent upon maternal age.
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Aktuğ H, Bozok Çetintaş V, Uysal A, Oltulu F, Yavaşoğlu A, Akarca SÖ, Kosova B. Evaluation of the Effects of STZ-Induced Diabetes on In Vitro Fertilization and Early Embryogenesis Processes. J Diabetes Res 2013; 2013:603813. [PMID: 23671879 PMCID: PMC3647572 DOI: 10.1155/2013/603813] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 02/12/2013] [Accepted: 02/25/2013] [Indexed: 01/23/2023] Open
Abstract
The aim of this study was to investigate the effects of experimentally induced diabetes on (a) germ cells, (b) in vitro fertilization (IVF) success rate, and (c) gap junction and cell adhesion molecule gene and protein expressions during the early blastocyst period. Germ cells were obtained from healthy and diabetic rats, analyzed for number, motility, and morphology, and used for IVF. After reaching the early blastocyst stage, the expressions of genes encoding gap junction proteins and cell adhesion molecules were analyzed by quantitative RT-PCR. Histomorphologically and immunohistochemically analyses were also performed. Diabetes significantly affected sperm number and motility and the development of oocytes. Gene expressions of β -catenin and connexin family members and protein expressions of E-cadherin and connexin-43 significantly decreased in groups including germ cells isolated from diabetic rats. Connective tissue growth factor expression increased in groups that included sperm cells isolated from diabetic male rats, whereas mucin-1 expression increased in the group that included oocytes isolated from diabetic female rats paired with sperm cells isolated from healthy male rats. In summary, experimentally induced diabetes was found to influence gap junctions, cell adhesion molecules, and associated proteins which all have important roles in germ cell maturation, fertilization, and development.
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Affiliation(s)
- Hüseyin Aktuğ
- Department of Histology and Embryology, Ege University Medical School, 35100 Izmir, Turkey
- *Hüseyin Aktuğ:
| | | | - Ayşegül Uysal
- Department of Histology and Embryology, Ege University Medical School, 35100 Izmir, Turkey
| | - Fatih Oltulu
- Department of Histology and Embryology, Ege University Medical School, 35100 Izmir, Turkey
| | - Altuğ Yavaşoğlu
- Department of Histology and Embryology, Ege University Medical School, 35100 Izmir, Turkey
| | - Saadet Özen Akarca
- Department of Histology and Embryology, Ege University Medical School, 35100 Izmir, Turkey
| | - Buket Kosova
- Department of Medical Biology, Ege University Medical School, 35100 Izmir, Turkey
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