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Madsen JF, Ernst EH, Amoushahi M, Dueholm M, Ernst E, Lykke-Hartmann K. Dorsomorphin inhibits AMPK, upregulates Wnt and Foxo genes and promotes the activation of dormant follicles. Commun Biol 2024; 7:747. [PMID: 38902324 PMCID: PMC11190264 DOI: 10.1038/s42003-024-06418-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 06/06/2024] [Indexed: 06/22/2024] Open
Abstract
AMPK is a well-known energy sensor regulating cellular metabolism. Metabolic disorders such as obesity and diabetes are considered detrimental factors that reduce fecundity. Here, we show that pharmacologically induced in vitro activation (by metformin) or inhibition (by dorsomorphin) of the AMPK pathway inhibits or promotes activation of ovarian primordial follicles in cultured murine ovaries and human ovarian cortical chips. In mice, activation of primordial follicles in dorsomorphin in vitro-treated ovaries reduces AMPK activation and upregulates Wnt and FOXO genes, which, interestingly, is associated with decreased phosphorylation of β-catenin. The dorsomorphin-treated ovaries remain of high quality, with no detectable difference in reactive oxygen species production, apoptosis or mitochondrial cytochrome c oxidase activity, suggesting safe activation. Subsequent maturation of in vitro-treated follicles, using a 3D alginate cell culture system, results in mature metaphase eggs with protruding polar bodies. These findings demonstrate that the AMPK pathway can safely regulate primordial follicles by modulating Wnt and FOXO genes, and reduce β-catenin phosphorylation.
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Affiliation(s)
- Julie Feld Madsen
- Department of Biomedicine, Aarhus University, DK-8000, Aarhus C, Denmark
| | - Emil Hagen Ernst
- Department of Obstetrics and Gynaecology, Aarhus University Hospital, DK-8000, Aarhus C, Denmark
- Department of Gynaecology and Obstetrics, Gødstrup Hospital, DK-7400, Herning, Denmark
| | | | - Margit Dueholm
- Department of Obstetrics and Gynaecology, Aarhus University Hospital, DK-8000, Aarhus C, Denmark
| | - Erik Ernst
- Department of Biomedicine, Aarhus University, DK-8000, Aarhus C, Denmark
- Fertility Clinic Regional Hospital Horsens, DK-8700, Horsens, Denmark
| | - Karin Lykke-Hartmann
- Department of Biomedicine, Aarhus University, DK-8000, Aarhus C, Denmark.
- Department of Clinical Genetics, Aarhus University Hospital, DK-8200, Aarhus N, Denmark.
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2
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Pei Z, Deng K, Xu C, Zhang S. The molecular regulatory mechanisms of meiotic arrest and resumption in Oocyte development and maturation. Reprod Biol Endocrinol 2023; 21:90. [PMID: 37784186 PMCID: PMC10544615 DOI: 10.1186/s12958-023-01143-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 09/20/2023] [Indexed: 10/04/2023] Open
Abstract
In human female primordial germ cells, the transition from mitosis to meiosis begins from the fetal stage. In germ cells, meiosis is arrested at the diplotene stage of prophase in meiosis I (MI) after synapsis and recombination of homologous chromosomes, which cannot be segregated. Within the follicle, the maintenance of oocyte meiotic arrest is primarily attributed to high cytoplasmic concentrations of cyclic adenosine monophosphate (cAMP). Depending on the specific species, oocytes can remain arrested for extended periods of time, ranging from months to even years. During estrus phase in animals or the menstrual cycle in humans, the resumption of meiosis occurs in certain oocytes due to a surge of luteinizing hormone (LH) levels. Any factor interfering with this process may lead to impaired oocyte maturation, which in turn affects female reproductive function. Nevertheless, the precise molecular mechanisms underlying this phenomenon has not been systematically summarized yet. To provide a comprehensive understanding of the recently uncovered regulatory network involved in oocyte development and maturation, the progress of the cellular and molecular mechanisms of oocyte nuclear maturation including meiosis arrest and meiosis resumption is summarized. Additionally, the advancements in understanding the molecular cytoplasmic events occurring in oocytes, such as maternal mRNA degradation, posttranslational regulation, and organelle distribution associated with the quality of oocyte maturation, are reviewed. Therefore, understanding the pathways regulating oocyte meiotic arrest and resumption will provide detailed insight into female reproductive system and provide a theoretical basis for further research and potential approaches for novel disease treatments.
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Affiliation(s)
- Zhenle Pei
- Shanghai Ji Ai Genetics & IVF Institute, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, 200011, China
| | - Ke Deng
- Shanghai Ji Ai Genetics & IVF Institute, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, 200011, China
| | - Congjian Xu
- Shanghai Ji Ai Genetics & IVF Institute, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, 200011, China.
- Department of Obstetrics and Gynecology of Shanghai Medical School, Fudan University, Shanghai, 200032, China.
| | - Shuo Zhang
- Shanghai Ji Ai Genetics & IVF Institute, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, 200011, China.
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3
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Catandi GD, Cheng MH, Chicco AJ, Chen T, Carnevale EM. L-carnitine enhances developmental potential of bovine oocytes matured under high lipid concentrations in vitro. Anim Reprod Sci 2023; 252:107249. [PMID: 37119563 DOI: 10.1016/j.anireprosci.2023.107249] [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: 08/01/2022] [Revised: 03/03/2023] [Accepted: 04/24/2023] [Indexed: 05/01/2023]
Abstract
Maternal obesity elevates non-esterified fatty acids (NEFA) follicular concentrations. Bovine cumulus-oocyte complexes (COCs) matured in vitro under high NEFA have altered metabolism and reduced quality. Systemically, obesity promotes altered mitochondrial metabolism linked to L-carnitine insufficiency. We hypothesized that L-carnitine supplementation during IVM of bovine COCs in the presence of high NEFA would lessen the negative effects of exposure to excessive lipids on embryonic development and oxidative stress. COCs were collected from abattoir ovaries and matured in four groups: CON (control), LC (3 mM L-carnitine), HN (high NEFA: 200uM oleic, 150uM palmitic and 75uM stearic acid), and HNLC (HN and LC). Mature oocytes were assayed for aerobic and anaerobic metabolism utilizing oxygen and pH microsensors or fertilized in vitro (D0). Cleavage (D3) and blastocyst (D7, D8) rates were assessed. D3 embryos with ≥ 4 cells were stained for cytosolic and mitochondrial ROS. D8 blastocysts were assayed for gene transcript abundance of metabolic enzymes. Oocyte metabolism was not affected by IVM treatment. D3 formation of embryos with ≥ 4 cells were lower in LC or HN than CON or HNLC; blastocyst rates were greater for CON and lower for HN than LC and HNLC. D3 embryo mitochondrial and cytosolic ROS were reduced in HNLC when compared to other groups. IVM in HN altered blastocyst gene transcript abundance when compared to CON, but not LC or HNLC. In conclusion, supplementation with L-carnitine protects oocytes exposed to high NEFA during IVM and improves their developmental competence, suggesting that high lipid exposure may lead to L-carnitine insufficiency in bovine oocytes.
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Affiliation(s)
- Giovana D Catandi
- Equine Reproduction Laboratory, Department of Biomedical Sciences, Colorado State University, 3101 Rampart Road, Fort Collins, CO 80521, USA; Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Ming-Hao Cheng
- Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Adam J Chicco
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Tom Chen
- Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80523, USA; School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Elaine M Carnevale
- Equine Reproduction Laboratory, Department of Biomedical Sciences, Colorado State University, 3101 Rampart Road, Fort Collins, CO 80521, USA; Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA.
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4
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Sharma Y, Galvão AM. Maternal obesity and ovarian failure: is leptin the culprit? Anim Reprod 2023; 19:e20230007. [PMID: 36855701 PMCID: PMC9968511 DOI: 10.1590/1984-3143-ar2023-0007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 01/24/2023] [Indexed: 02/22/2023] Open
Abstract
At the time of its discovery and characterization in 1994, leptin was mostly considered a metabolic hormone able to regulate body weight and energy homeostasis. However, in recent years, a great deal of literature has revealed leptin's pleiotropic nature, through its involvement in numerous physiological contexts including the regulation of the female reproductive tract and ovarian function. Obesity has been largely associated with infertility, and leptin signalling is known to be dysregulated in the ovaries of obese females. Hence, the disruption of ovarian leptin signalling was shown to contribute to the pathophysiology of ovarian failure in obese females, affecting transcriptional programmes in the gamete and somatic cells. This review attempts to uncover the underlying mechanisms contributing to female infertility associated with obesity, as well as to shed light on the role of leptin in the metabolic dysregulation within the follicle, the effects on the oocyte epigenome, and the potential long-term consequence to embryo programming.
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Affiliation(s)
- Yashaswi Sharma
- Institute of Animal Reproduction and Food Research of PAS, Department of Reproductive Immunology and Pathology, Olsztyn, Poland
| | - António Miguel Galvão
- Institute of Animal Reproduction and Food Research of PAS, Department of Reproductive Immunology and Pathology, Olsztyn, Poland,Babraham Institute, Epigenetics Programme, Cambridge, United Kingdom UK,Centre for Trophoblast Research, University of Cambridge, Cambridge, United Kingdom UK,Corresponding author: ;
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5
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Colombo M, Alkali IM, Luvoni GC. Microenvironment factors promoting the quality of vitrified cat oocytes. Theriogenology 2023; 196:275-283. [PMID: 36442286 DOI: 10.1016/j.theriogenology.2022.11.027] [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: 06/24/2022] [Revised: 11/17/2022] [Accepted: 11/19/2022] [Indexed: 11/23/2022]
Abstract
In oocyte cryopreservation programs, vitrification has overthrown conventional slow freezing both in veterinary and human medicine. In animals, its feasibility in field conditions makes it the preferred technique for the safeguard of genetic resources from zoo or wild animals, including threatened felids, for which the domestic cat is an excellent model. However, many cellular injuries, such as cytoskeleton, mitochondria and meiotic spindle alterations, DNA damage, zona pellucida hardening and cumulus cell loss, might occur following vitrification. After warming, although the exact mechanisms are still unclear, degeneration is a frequent outcome for cat vitrified oocytes. For immature (germinal vesicle) gametes, in vitro maturation after warming is a challenge, and cleavage after fertilization barely reaches 15-30%, while for mature (metaphase II) cryopreserved gametes it can get to 30-50%. Anyway, the progression to late embryos stages is often impaired, and improvements are needed. Standard cryopreservation protocol and the use of conventional in vitro culture systems after warming may not be enough for vitrified oocytes to recover and demonstrate their full developmental potential. Physical or chemical factors applied to oocytes undergoing vitrification, as an enrichment to the vitrification step, or to the culture microenvironment, could create more favorable conditions and promote vitrified oocyte survival and development. From the use of three-dimensional culture systems to the regulation of metabolic activities and cellular pathways, this review aims to explore all the possibilities employed so far, including the studies performed by our own lab, and the future perspectives, to present the most effective strategies for cat oocyte vitrification and the best time for their application (i.e., before, during, or after vitrification-warming).
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Affiliation(s)
- Martina Colombo
- Dipartimento di Medicina Veterinaria e Scienze Animali (DIVAS), Università degli Studi di Milano, 26900, Lodi, Italy.
| | - Isa Mohammed Alkali
- Dipartimento di Medicina Veterinaria e Scienze Animali (DIVAS), Università degli Studi di Milano, 26900, Lodi, Italy.
| | - Gaia Cecilia Luvoni
- Dipartimento di Medicina Veterinaria e Scienze Animali (DIVAS), Università degli Studi di Milano, 26900, Lodi, Italy.
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6
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Siristatidis C, Mantzavinos T, Vlahos N. Maternal spindle transfer for mitochondrial disease: lessons to be learnt before extending the method to other conditions? HUM FERTIL 2022; 25:838-847. [PMID: 33993847 DOI: 10.1080/14647273.2021.1925168] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Mitochondrial diseases are a group of conditions attributed to mutations of specific genes that regulate mitochondrial function. Maternal spindle transfer (MST) has been proposed as a method to prevent the transmission of these diseases and utilisation of the technique resulted in the birth of a baby free of disease in 2017 in Mexico. Potential flaws in research governance and the associated criticism emerged from the expansion of MST to provide a potentially new assisted reproductive technique to overcome infertility problems characterised by repeated in vitro embryo development arrest caused by mitochondrial dysfunction and cytoplasmic deficiencies of the oocyte. This applied technique represents a good example of the need to strike "a balance between taking appropriate precautions and hampering innovation". The purpose of this article is to explore, through a comprehensive literature search, whether and how this process can evolve from an experimental method to treat a medical condition to a standard of care solution for certain types of infertility. We argue that a number of key issues should be considered before applying the technique more broadly. These include regulatory oversight, safety and efficacy, cost, implications for research, essential laboratory skills and oversight, as well as the care needs of patients and egg donors.
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Affiliation(s)
- Charalampos Siristatidis
- Assisted Reproduction Unit, Second Department of Obstetrics and Gynecology, Medical School, National and Kapodistrian University of Athens, "Aretaieio" University Hospital, Athens, Greece
| | - Themis Mantzavinos
- Scientific director of "Institute of Life" IVF Center, Iaso Maternity Hospital, Athens, Greece
| | - Nikos Vlahos
- Assisted Reproduction Unit, Second Department of Obstetrics and Gynecology, Medical School, National and Kapodistrian University of Athens, "Aretaieio" University Hospital, Athens, Greece
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7
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Golestanfar A, Niasari-Naslaji A, Jafarpour F, Rouhollahi S, Rezaei N, Menezo Y, Dattilo M, Nasr-Esfahani MH. Metabolic enhancement of the one carbon metabolism (OCM) in bovine oocytes IVM increases the blastocyst rate: evidences for a OCM checkpoint. Sci Rep 2022; 12:20629. [PMID: 36450805 PMCID: PMC9712338 DOI: 10.1038/s41598-022-25083-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 11/24/2022] [Indexed: 12/12/2022] Open
Abstract
The one carbon metabolism (OCM) has a primary role in the process of oocyte maturation. In this study bovine oocytes were cultured for 24 h, up to MII stage, with standard medium supplemented or not with 8 metabolic enhancers of the OCM and the MII and blastocyst rate were compared. Additional analyses were performed on matured oocytes, cumulus cells, zygotes and blastocysts. The OCM supplementation increased the blastocyst rate derived from in vitro fertilization. The mitochondrial mass and DNMT3a protein expression were increased whereas DNA fragmentation decreased in matured oocytes. DNA methylation in female pronucleus of zygotes was increased. The supplementation did not directly affect the redox balance as ROS and GSH in matured oocytes and homocysteine in the spent medium were unchanged. The supplementation of the oocytes with metabolic enhancers of the OCM may increase the yield from the culture, likely due to improved DNA methylation and epigenetic programming. The lack of effects on MII rate with huge differences appearing at the blastocyst stage suggest the existence of a OCM metabolic check point that hampers oocytes progression to blastocyst post-fertilization, if they were not properly primed at the time of maturation.
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Affiliation(s)
- Arefeh Golestanfar
- grid.46072.370000 0004 0612 7950Department of Theriogenology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Amir Niasari-Naslaji
- grid.46072.370000 0004 0612 7950Department of Theriogenology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Farnoosh Jafarpour
- grid.417689.5Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Shiva Rouhollahi
- grid.417689.5Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Naeimeh Rezaei
- grid.417689.5Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Yves Menezo
- Laboratoire Clément, 17 Avenue d’Eylau, 75016 Paris, France
| | | | - Mohammad Hossein Nasr-Esfahani
- grid.417689.5Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
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8
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Rahmawati P, Wiweko B, Boediono A. Mitochondrial DNA copy number in cumulus granulosa cells as a predictor for embryo morphokinetics and chromosome status. Syst Biol Reprod Med 2022; 69:101-111. [PMID: 36426586 DOI: 10.1080/19396368.2022.2145248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
While morphokinetic evaluation of embryos has become the most commonly used technique in IVF to select embryos for transfer, studies have demonstrated that mitochondrial DNA (mtDNA) copy number is correlated with embryo viability and transfer outcomes. Correspondingly, this cohort study aims to evaluate the association between the mtDNA copy number in cumulus granulosa cells (CGCs) with embryo morphokinetic parameters and chromosomal status. Real-time PCR was employed to measure the mtDNA copy number of the 129 CGCs in samples obtained from 30 patients undergoing the IVF-IMSI program at Morula IVF Jakarta between July and October 2020. Bivariate and multiple analyses were utilized to determine its relationship with embryo morphokinetics, blastocyst yield, and chromosomal status. According to the analysis, there was a significant correlation between the mtDNA copy number and the blastocyst status after adjusting for the maternal age and sperm morphology (coefficient 0.832, p value = 0.032, RR value 2.299). Moreover, a significant link was observed between mtDNA copy number in CGC and early embryo developmental phase M1 (t2-t8), using the equation of M1 is 5.702-0.271 mtDNA copy number of CGCs + 0.017 maternal age + 0.013 sperm motility -0.115 sperm morphology (p value = 0.032). However, no correlation was found between the mtDNA copy number in CGCs with the other morphokinetic parameters (M2: tC-tEB, M3: t2-tEB, DC, RC, MN with p > 0.05), or the chromosomal status of the embryos (euploid: 139.44 ± 133.12, aneuploid: 142.40 ± 111.30, p = 0.806). In conclusion, our study suggests that mtDNA copy number in CGCs can serve as a useful biomarker for blastocyst status and early embryo developmental phase but not for chromosomal status.
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Affiliation(s)
- Pitra Rahmawati
- Master Program in Biomedical Science, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- Morula IVF Jakarta, IVF Center, Jakarta, Indonesia
| | - Budi Wiweko
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- Yasmin IVF Clinic, Dr. Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
- Human Reproductive, Infertility and Family Planning Research Center, Indonesia Medical Education and Research Institute (IMERI), Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Arief Boediono
- Morula IVF Jakarta, IVF Center, Jakarta, Indonesia
- Department of Anatomy, Physiology and Pharmacology, IPB University, Bogor, Indonesia
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9
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Gallo A, Esposito MC, Boni R, Tosti E. Oocyte quality assessment in marine invertebrates: a novel approach by fluorescence spectroscopy. Biol Res 2022; 55:34. [DOI: 10.1186/s40659-022-00403-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 10/28/2022] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
The assessment of oocyte quality is, nowadays, a major challenge in aquaculture, oocyte cryopreservation, and environmental science. Oocyte quality is a determining factor in fertilization and embryo development; however, there is still a lack of rapid and sensitive cellular markers for its assessment. Currently, its estimation is predominantly based on morphological analysis, which is subjective and does not consistently reflect the developmental competence of the oocytes. Despite several recent studies investigating molecular markers related to oocyte quality, methods currently available for their determination pose various technical challenges and limitations. In this study, we developed a novel approach based on fluorescence spectroscopy to assess different intrinsic physiological parameters that can be employed to evaluate egg quality in marine invertebrates that are widely used as animal models such as sea urchins and mussels.
Results
Different physiological parameters, such as viability, mitochondrial activity, intracellular ROS levels, plasma membrane lipid peroxidation, and intracellular pH, for egg quality evaluation have been successfully assessed in sea urchins and mussels by using specific fluorescent dyes and detecting the fluorescent signals in eggs through fluorescence spectroscopy.
Conclusions
Based on our findings, we propose these physiological markers as useful predictors of egg quality in marine invertebrates; they can be estimated rapidly, selectively, and sensitively by employing this novel approach, which, due to the speed of analysis, the low cost, and easy use can be considered a powerful analytical tool for the egg quality assessment.
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10
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Zhao T, Pan Y, Li Q, Ding T, Niayale R, Zhang T, Wang J, Wang Y, Zhao L, Han X, Baloch AR, Cui Y, Yu S. Leukemia inhibitory factor enhances the development and subsequent blastocysts quality of yak oocytes in vitro. Front Vet Sci 2022; 9:997709. [PMID: 36213393 PMCID: PMC9533679 DOI: 10.3389/fvets.2022.997709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 08/22/2022] [Indexed: 11/25/2022] Open
Abstract
Leukemia inhibitory factor (LIF) is a multipotent cytokine of the IL-6 family which plays a critical role in the maturation and development of oocytes. This study evaluated the influence of LIF on the maturation and development ability of yak oocytes, and the quality of subsequent blastocysts under in vitro culture settings. Different concentrations of LIF (0, 25, 50, and 100 ng/mL) were added during the in vitro culture of oocytes to detect the maturation rate of oocytes, levels of mitochondria, reactive oxygen species (ROS), actin, and apoptosis in oocytes, mRNA transcription levels of apoptosis and antioxidant-related genes in oocytes, and total cell number and apoptosis levels in subsequent blastocysts. The findings revealed that 50 ng/mL LIF could significantly increase the maturation rate (p < 0.01), levels of mitochondria (p < 0.01) and actin (p < 0.01), and mRNA transcription levels of anti-apoptotic and antioxidant-related genes in yak oocytes. Also, 50 ng/mL LIF could significantly lower the generation of ROS (p < 0.01) and apoptosis levels of oocytes (p < 0.01). In addition, blastocysts formed from 50 ng/mL LIF-treated oocytes showed significantly larger total cell numbers (p < 0.01) and lower apoptosis rates (p < 0.01) than the control group. In conclusion, the addition of LIF during the in vitro maturation of yak oocytes improved the quality and the competence of maturation and development in oocytes, as well as the quality of subsequent blastocysts. The result of this study provided some insights into the role and function of LIF in vitro yak oocytes maturation, as well as provided fundamental knowledge for assisted reproductive technologies in the yak.
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Affiliation(s)
- Tian Zhao
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Yangyang Pan
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Qin Li
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Tianyi Ding
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Robert Niayale
- School of Veterinary Medicine, University for Development Studies, Tamale, Ghana
| | - Tongxiang Zhang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Jinglei Wang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Yaying Wang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Ling Zhao
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Xiaohong Han
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Abdul Rasheed Baloch
- Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Yan Cui
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Sijiu Yu
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
- *Correspondence: Sijiu Yu
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11
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Role of Mitochondria Transfer in Infertility: A Commentary. Cells 2022; 11:cells11121867. [PMID: 35740996 PMCID: PMC9221194 DOI: 10.3390/cells11121867] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/03/2022] [Accepted: 06/07/2022] [Indexed: 12/04/2022] Open
Abstract
Mitochondria transfer techniques were first designed to prevent the transmission of diseases due to mutations in mtDNA, as these organelles are exclusively transmitted to the offspring by the oocyte. Despite this, given the crucial role of mitochondria in oocyte maturation, fertilization and subsequent embryo development, these approaches have been proposed as new potential strategies to overcome poor oocyte quality in infertile patients. This condition is a very common cause of infertility in patients of advanced maternal age, and patients with previous in vitro fertilization (IVF) attempt failures of oocyte origin. In this context, the enrichment or the replacement of the whole set of the oocyte mitochondria may improve its quality and increase these patients’ chances of success after an IVF treatment. In this short review, we will provide a brief overview of the main human studies using heterologous and autologous mitochondria transfer techniques in the reproductive field, focusing on the etiology of the treated patients and the final outcome. Although there is no current clearly superior mitochondria transfer technique, efforts must be made in order to optimize them and bring them into regular clinical practice, giving these patients a chance to achieve a pregnancy with their own oocytes.
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12
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Pan C, Chen J, Chen Y, Lu Y, Liang X, Xiong B, Lu Y. Mogroside V ameliorates the oxidative stress-induced meiotic defects in porcine oocytes in vitro. Reprod Toxicol 2022; 111:148-157. [PMID: 35597324 DOI: 10.1016/j.reprotox.2022.05.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 05/10/2022] [Accepted: 05/13/2022] [Indexed: 01/18/2023]
Abstract
It has been reported that environmental factors, such as industrial pollution, environmental toxins, environmental hormones, and global warming contribute to the oxidative stress-induced deterioration of oocyte quality and female fertility. However, the prevention or improvement approaches have not been fully elucidated. Here, we explored the mechanism regarding how Mogroside V (MV), a main extract of Siraitia grosvenorii, improves the oxidative stress-induced meiotic defects in porcine oocytes. Our results showed that MV supplementation restores the defective oocyte maturation and cumulus cell expansion caused by H2O2 treatment. We further found that MV supplementation promoted the oocyte cytoplasmic maturation through preventing cortical granules from the aberrant distribution, and drove the nuclear maturation by maintaining the cytoskeleton structure. Notably, our single-cell RNA sequencing data indicated that H2O2-treated oocytes led to the oxidative stress primarily through two pathways 'meiosis' and 'oxidative phosphorylation'. Lastly, we evaluated the effects of MV supplementation on the mitochondrial distribution pattern and membrane potential in H2O2-treated oocytes, revealing that MV supplementation eliminated the excessive ROS induced by the mitochondrial abnormalities and consequently suppressed the apoptosis. In conclusion, our study demonstrates that MV supplementation is an effective approach to ameliorate the oxidative stress-induced meiotic defects via recovering the mitochondrial integrity in porcine oocytes.
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Affiliation(s)
- Chen Pan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, 530004, Guangxi, China
| | - Jingyue Chen
- State Key Laboratory for Molecular Biology of Special Economic Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, 130112, China
| | - Ying Chen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yajuan Lu
- Institute of Reproductive Medicine, Medical School, Nantong University, Nantong, 226019, Jiangsu, China
| | - Xingwei Liang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, 530004, Guangxi, China
| | - Bo Xiong
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Yangqing Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, 530004, Guangxi, China.
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13
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Yue X, Liu SL, Guo JN, Meng TG, Zhang XR, Li HX, Song CY, Wang ZB, Schatten H, Sun QY, Guo XP. Epitalon protects against post-ovulatory aging-related damage of mouse oocytes in vitro. Aging (Albany NY) 2022; 14:3191-3202. [PMID: 35413689 PMCID: PMC9037278 DOI: 10.18632/aging.204007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 01/28/2022] [Indexed: 11/25/2022]
Abstract
The developmental potential of oocytes decreases with time after ovulation in vivo or in vitro. Epitalon is a synthetic short peptide made of four amino acids (alanine, glutamic acid, aspartic acid, and glycine), based on a natural peptide called epithalamion extracted from the pineal gland. It is a potent antioxidant, comparable to melatonin, that may confer longevity benefits. The current study aims to test the protective effects of Epitalon on the quality of post-ovulatory aging oocytes. Epitalon at 0.1mM was added to the culture medium, and the quality of oocytes was evaluated at 6h, 12h, and 24h of culture. We found that 0.1mM Epitalon reduced intracellular reactive oxygen species. Epitalon treatment significantly decreased frequency of spindle defects and abnormal distribution of cortical granules during aging for 12h and 24h, while increased mitochondrial membrane potential and DNA copy number of mitochondria, thus decreasing apoptosis of oocytes by 24h of in vitro aging. Our results suggest that Epitalon can delay the aging process of oocytes in vitro via modulating mitochondrial activity and ROS levels.
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Affiliation(s)
- Xue Yue
- Department of Biochemistry and Molecular Biology, Basic Medical College, Shanxi Medical University, Taiyuan 030001, Shanxi, China.,Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Reproductive Science Institute, Taiyuan 030032, Shanxi, China.,State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Sai-Li Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jia-Ni Guo
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Tie-Gang Meng
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Xin-Ran Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Hong-Xia Li
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Reproductive Science Institute, Taiyuan 030032, Shanxi, China
| | - Chun-Ying Song
- Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Reproductive Science Institute, Taiyuan 030032, Shanxi, China
| | - Zhen-Bo Wang
- 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
| | - Qing-Yuan Sun
- Fertility Preservation Lab, Guangdong-Hong Kong Metabolism and Reproduction Joint Laboratory, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou 510320, Guangdong, China
| | - Xing-Ping Guo
- Department of Biochemistry and Molecular Biology, Basic Medical College, Shanxi Medical University, Taiyuan 030001, Shanxi, China.,Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Reproductive Science Institute, Taiyuan 030032, Shanxi, China
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14
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Fu L, Luo YX, Liu Y, Liu H, Li HZ, Yu Y. Potential of Mitochondrial Genome Editing for Human Fertility Health. Front Genet 2021; 12:673951. [PMID: 34354734 PMCID: PMC8329452 DOI: 10.3389/fgene.2021.673951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 06/28/2021] [Indexed: 12/21/2022] Open
Abstract
Mitochondrial DNA (mtDNA) encodes vital proteins and RNAs for the normal functioning of the mitochondria. Mutations in mtDNA leading to mitochondrial dysfunction are relevant to a large spectrum of diseases, including fertility disorders. Since mtDNA undergoes rather complex processes during gametogenesis and fertilization, clarification of the changes and functions of mtDNA and its essential impact on gamete quality and fertility during this process is of great significance. Thanks to the emergence and rapid development of gene editing technology, breakthroughs have been made in mitochondrial genome editing (MGE), offering great potential for the treatment of mtDNA-related diseases. In this review, we summarize the features of mitochondria and their unique genome, emphasizing their inheritance patterns; illustrate the role of mtDNA in gametogenesis and fertilization; and discuss potential therapies based on MGE as well as the outlook in this field.
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Affiliation(s)
- Lin Fu
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Yu-Xin Luo
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Ying Liu
- Food Inspection and Quarantine Technology Center of Shenzhen Customs District, FICS, Shenzhen, China
| | - Hui Liu
- Stem Cell Research Center, Peking University Third Hospital, Beijing, China
| | - Hong-Zhen Li
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Yang Yu
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.,Stem Cell Research Center, Peking University Third Hospital, Beijing, China
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15
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Rodríguez-Varela C, Herraiz S, Labarta E. Mitochondrial enrichment in infertile patients: a review of different mitochondrial replacement therapies. Ther Adv Reprod Health 2021; 15:26334941211023544. [PMID: 34263171 PMCID: PMC8243099 DOI: 10.1177/26334941211023544] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 05/07/2021] [Indexed: 01/23/2023] Open
Abstract
Poor ovarian responders exhibit a quantitative reduction in their follicular
pool, and most cases are also associated with poor oocyte quality due to
patient’s age, which leads to impaired in vitro fertilisation
outcomes. In particular, poor oocyte quality has been related to mitochondrial
dysfunction and/or low mitochondrial count as these organelles are crucial in
many essential oocyte processes. Therefore, mitochondrial enrichment has been
proposed as a potential therapy option in infertile patients to improve oocyte
quality and subsequent in vitro fertilisation outcomes.
Nowadays, different options are available for mitochondrial enrichment
treatments that are encompassed in two main approaches: heterologous and
autologous. In the heterologous approach, mitochondria come from an external
source, which is an oocyte donor. These techniques include transferring either a
portion of the donor’s oocyte cytoplasm to the recipient oocyte or nuclear
material from the patient to the donor’s oocyte. In any case, this approach
entails many ethical and safety concerns that mainly arise from the uncertain
degree of mitochondrial heteroplasmy deriving from it. Thus the autologous
approach is considered a suitable potential tool to improve oocyte quality by
overcoming the heteroplasmy issue. Autologous mitochondrial transfer, however,
has not yielded as many beneficial outcomes as initially expected. Proposed
mitochondrial autologous sources include immature oocytes, granulosa cells,
germline stem cells, and adipose-derived stem cells. Presently, it would seem
that these autologous techniques do not improve clinical outcomes in human
infertile patients. However, further trials still need to be performed to
confirm these results. Besides these two main categories, new strategies have
arisen for oocyte rejuvenation by improving patient’s own mitochondrial function
and avoiding the unknown consequences of third-party genetic material. This is
the case of antioxidants, which may enhance mitochondrial activity by
counteracting and/or preventing oxidative stress damage. Among others,
coenzyme-Q10 and melatonin have shown promising results in low-prognosis
infertile patients, although further randomised clinical trials are still
necessary.
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Affiliation(s)
| | | | - Elena Labarta
- IVI Foundation – IIS La Fe, Valencia, Spain;
IVIRMA Valencia, Valencia, Spain
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16
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Shi J, Fok KL, Dai P, Qiao F, Zhang M, Liu H, Sang M, Ye M, Liu Y, Zhou Y, Wang C, Sun F, Xie G, Chen H. Spatio-temporal landscape of mouse epididymal cells and specific mitochondria-rich segments defined by large-scale single-cell RNA-seq. Cell Discov 2021; 7:34. [PMID: 34001862 PMCID: PMC8129088 DOI: 10.1038/s41421-021-00260-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/08/2021] [Indexed: 02/03/2023] Open
Abstract
Spermatozoa acquire their fertilizing ability and forward motility during epididymal transit, suggesting the importance of the epididymis. Although the cell atlas of the epididymis was reported recently, the heterogeneity of the cells and the gene expression profile in the epididymal tube are still largely unknown. Considering single-cell RNA sequencing results, we thoroughly studied the cell composition, spatio-temporal differences in differentially expressed genes (DEGs) in epididymal segments and mitochondria throughout the epididymis with sufficient cell numbers. In total, 40,623 cells were detected and further clustered into 8 identified cell populations. Focused analyses revealed the subpopulations of principal cells, basal cells, clear/narrow cells, and halo/T cells. Notably, two subtypes of principal cells, the Prc7 and Prc8 subpopulations were enriched as stereocilia-like cells according to GO analysis. Further analysis demonstrated the spatially specific pattern of the DEGs in each cell cluster. Unexpectedly, the abundance of mitochondria and mitochondrial transcription (MT) was found to be higher in the corpus and cauda epididymis than in the caput epididymis by scRNA-seq, immunostaining, and qPCR validation. In addition, the spatio-temporal profile of the DEGs from the P42 and P56 epididymis, including transiting spermatozoa, was depicted. Overall, our study presented the single-cell transcriptome atlas of the mouse epididymis and revealed the novel distribution pattern of mitochondria and key genes that may be linked to sperm functionalities in the first wave and subsequent wave of sperm, providing a roadmap to be emulated in efforts to achieve sperm maturation regulation in the epididymis.
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Affiliation(s)
- Jianwu Shi
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Kin Lam Fok
- grid.10784.3a0000 0004 1937 0482School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR China
| | - Pengyuan Dai
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Feng Qiao
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Mengya Zhang
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Huage Liu
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Mengmeng Sang
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Mei Ye
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Yang Liu
- grid.16821.3c0000 0004 0368 8293Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Yiwen Zhou
- grid.16821.3c0000 0004 0368 8293Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Chengniu Wang
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Fei Sun
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Gangcai Xie
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
| | - Hao Chen
- grid.260483.b0000 0000 9530 8833Institute of Reproductive Medicine, Medical School of Nantong University, Nantong, Jiangsu 226019 China
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17
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Feng P, Xie Q, Liu Z, Guo Z, Tang R, Yu Q. Study on the Reparative Effect of PEGylated Growth Hormone on Ovarian Parameters and Mitochondrial Function of Oocytes From Rats With Premature Ovarian Insufficiency. Front Cell Dev Biol 2021; 9:649005. [PMID: 33791307 PMCID: PMC8005617 DOI: 10.3389/fcell.2021.649005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 02/15/2021] [Indexed: 12/02/2022] Open
Abstract
Premature ovarian insufficiency (POI) is a heterogeneous disorder and lacks effective interventions in clinical applications. This research aimed to elucidate the potential effects of recombinant human PEGylated growth hormone (rhGH) on follicular development and mitochondrial function in oocytes as well as ovarian parameters in POI rats induced by the chemotherapeutic agent. The impacts of rhGH on ovarian function before superovulation on follicles, estrous cycle, and sex hormones were evaluated. Oocytes were retrieved to determine oocyte quality and oxidative stress parameters. Single-cell sequencing was applied to investigate the latent regulatory network. This study provides new evidence that a high dosage of rhGH increased the number of retrieved oocytes even though it did not completely restore the disturbed estrous cycle and sex hormones. rhGH attenuated the apoptosis of granulosa cells and oxidative stress response caused by reactive oxygen species (ROS) and mitochondrial superoxide. Additionally, rhGH modulated the energy metabolism of oocytes concerning the mitochondrial membrane potential and ATP content but not mtDNA copy numbers. Based on single-cell transcriptomic analysis, we found that rhGH directly or indirectly promoted the balance of oxidative stress and cellular oxidant detoxification. Four hub genes, Pxmp4, Ehbp1, Mt-cyb, and Enpp6, were identified to be closely related to the repair process in oocytes as potential targets for POI treatment.
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Affiliation(s)
- Penghui Feng
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Qiu Xie
- Department of Medical Research Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Zhe Liu
- Laboratory of Clinical Genetics Medical Science Research Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Zaixin Guo
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Ruiyi Tang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Qi Yu
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
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18
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Christodoulaki A, Boel A, Tang M, De Roo C, Stoop D, Heindryckx B. Prospects of Germline Nuclear Transfer in Women With Diminished Ovarian Reserve. Front Endocrinol (Lausanne) 2021; 12:635370. [PMID: 33692760 PMCID: PMC7937897 DOI: 10.3389/fendo.2021.635370] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/06/2021] [Indexed: 12/12/2022] Open
Abstract
Diminished ovarian reserve (DOR) is associated with a reduced quantity and quality of the retrieved oocytes, usually leading to poor reproductive outcomes which remain a great challenge for assisted reproduction technology (ART). Women with DOR often have to seek for oocyte donation, precluding genetically related offspring. Germline nuclear transfer (NT) is a novel technology in ART that involves the transfer of the nuclear genome from an affected oocyte/zygote of the patient to the cytoplast of an enucleated donor oocyte/zygote. Therefore, it offers opportunities for the generation of genetically related embryos. Currently, although NT is clinically applied only in women with serious mitochondrial DNA disorders, this technology has also been proposed to overcome certain forms of female infertility, such as advanced maternal age and embryo developmental arrest. In this review, we are proposing the NT technology as a future treatment option for DOR patients. Strikingly, the application of different NT strategies will result in an increase of the total number of available reconstituted embryos for DOR patients.
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Affiliation(s)
- Antonia Christodoulaki
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - Annekatrien Boel
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - Maoxing Tang
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
- Reproductive Medicine Center, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Chloë De Roo
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - Dominic Stoop
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - Björn Heindryckx
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
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