1
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Yan H, Miranda EAD, Jin S, Wilson F, An K, Godbee B, Zheng X, Brau-Rodríguez AR, Lei L. Primary oocytes with cellular senescence features are involved in ovarian aging in mice. Sci Rep 2024; 14:13606. [PMID: 38871781 PMCID: PMC11176158 DOI: 10.1038/s41598-024-64441-6] [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: 01/09/2024] [Accepted: 06/10/2024] [Indexed: 06/15/2024] Open
Abstract
In mammalian females, quiescent primordial follicles serve as the ovarian reserve and sustain normal ovarian function and egg production via folliculogenesis. The loss of primordial follicles causes ovarian aging. Cellular senescence, characterized by cell cycle arrest and production of the senescence-associated secretory phenotype (SASP), is associated with tissue aging. In the present study, we report that some quiescent primary oocytes in primordial follicles become senescent in adult mouse ovaries. The senescent primary oocytes share senescence markers characterized in senescent somatic cells. The senescent primary oocytes were observed in young adult mouse ovaries, remained at approximately 15% of the total primary oocytes during ovarian aging from 6 to 12 months, and accumulated in aged ovaries. Administration of a senolytic drug ABT263 to 3-month-old mice reduced the percentage of senescent primary oocytes and the transcription of the SASP factors in the ovary, in addition, led to increased numbers of primordial and total follicles and a higher rate of oocyte maturation. Our study provides experimental evidence that primary oocytes, a germline cell type that is arrested in meiosis, become senescent in adult mouse ovaries and that senescent cell clearance reduced primordial follicle loss and mitigated ovarian aging phenotypes.
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Affiliation(s)
- Hao Yan
- Buck Institute for Research on Aging, Novato, CA, 94945, USA
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Edgar Andres Diaz Miranda
- Department of Obstetrics, Gynecology and Women's Health, University of Missouri School of Medicine, Columbia, MO, 65211, USA
| | - Shiying Jin
- Department of Obstetrics, Gynecology and Women's Health, University of Missouri School of Medicine, Columbia, MO, 65211, USA
| | - Faith Wilson
- Department of Obstetrics, Gynecology and Women's Health, University of Missouri School of Medicine, Columbia, MO, 65211, USA
- Division of Biological Sciences, College of Arts and Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - Kang An
- Department of Obstetrics, Gynecology and Women's Health, University of Missouri School of Medicine, Columbia, MO, 65211, USA
| | - Brooke Godbee
- Department of Obstetrics, Gynecology and Women's Health, University of Missouri School of Medicine, Columbia, MO, 65211, USA
- College of Health Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - Xiaobin Zheng
- Department of Embryology, Carnegie Institution for Science, Baltimore, MD, 21218, USA
| | - Astrid Roshealy Brau-Rodríguez
- Department of Obstetrics, Gynecology and Women's Health, University of Missouri School of Medicine, Columbia, MO, 65211, USA
| | - Lei Lei
- Department of Obstetrics, Gynecology and Women's Health, University of Missouri School of Medicine, Columbia, MO, 65211, USA.
- Division of Biological Sciences, College of Arts and Sciences, University of Missouri, Columbia, MO, 65211, USA.
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2
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Gao Y, Dong R, Yan J, Chen H, Sang L, Yao X, Fan D, Wang X, Zuo X, Zhang X, Yang S, Wu Z, Sun J. Mitochondrial deoxyguanosine kinase is required for female fertility in mice. Acta Biochim Biophys Sin (Shanghai) 2024; 56:427-439. [PMID: 38327186 PMCID: PMC10984852 DOI: 10.3724/abbs.2024003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 11/16/2023] [Indexed: 02/09/2024] Open
Abstract
Mitochondrial homeostasis plays a pivotal role in oocyte maturation and embryonic development. Deoxyguanosine kinase (DGUOK) is a nucleoside kinase that salvages purine nucleosides in mitochondria and is critical for mitochondrial DNA replication and homeostasis in non-proliferating cells. Dguok loss-of-function mutations and deletions lead to hepatocerebral mitochondrial DNA deletion syndrome. However, its potential role in reproduction remains largely unknown. In this study, we find that Dguok knockout results in female infertility. Mechanistically, DGUOK deficiency hinders ovarian development and oocyte maturation. Moreover, DGUOK deficiency in oocytes causes a significant reduction in mitochondrial DNA copy number and abnormal mitochondrial dynamics and impairs germinal vesicle breakdown. Only few DGUOK-deficient oocytes can extrude their first polar body during in vitro maturation, and these oocytes exhibit irregular chromosome arrangements and different spindle lengths. In addition, DGUOK deficiency elevates reactive oxygen species levels and accelerates oocyte apoptosis. Our findings reveal novel physiological roles for the mitochondrial nucleoside salvage pathway in oocyte maturation and implicate DGUOK as a potential marker for the diagnosis of female infertility.
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Affiliation(s)
- Yake Gao
- Center for Life SciencesYunnan Key Laboratory of Cell Metabolism and DiseasesState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Life SciencesYunnan UniversityKunming650091China
| | - Rui Dong
- Center for Life SciencesYunnan Key Laboratory of Cell Metabolism and DiseasesState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Life SciencesYunnan UniversityKunming650091China
| | - Jiacong Yan
- Department of Reproductive Medicinethe First People’s Hospital of Yunnan ProvinceNHC Key Laboratory of Preconception Health Birth in Western ChinaKunming650100China
| | - Huicheng Chen
- Center for Life SciencesYunnan Key Laboratory of Cell Metabolism and DiseasesState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Life SciencesYunnan UniversityKunming650091China
| | - Lei Sang
- Center for Life SciencesYunnan Key Laboratory of Cell Metabolism and DiseasesState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Life SciencesYunnan UniversityKunming650091China
| | - Xinyi Yao
- Center for Life SciencesYunnan Key Laboratory of Cell Metabolism and DiseasesState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Life SciencesYunnan UniversityKunming650091China
| | - Die Fan
- Center for Life SciencesYunnan Key Laboratory of Cell Metabolism and DiseasesState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Life SciencesYunnan UniversityKunming650091China
| | - Xin Wang
- Center for Life SciencesYunnan Key Laboratory of Cell Metabolism and DiseasesState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Life SciencesYunnan UniversityKunming650091China
| | - Xiaoyuan Zuo
- Center for Life SciencesYunnan Key Laboratory of Cell Metabolism and DiseasesState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Life SciencesYunnan UniversityKunming650091China
| | - Xu Zhang
- Center for Life SciencesYunnan Key Laboratory of Cell Metabolism and DiseasesState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Life SciencesYunnan UniversityKunming650091China
| | - Shengyu Yang
- Department of Cellular and Molecular PhysiologyThe Penn State University College of MedicineHersheyPA17033USA
| | - Ze Wu
- Department of Reproductive Medicinethe First People’s Hospital of Yunnan ProvinceNHC Key Laboratory of Preconception Health Birth in Western ChinaKunming650100China
| | - Jianwei Sun
- Center for Life SciencesYunnan Key Laboratory of Cell Metabolism and DiseasesState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of Life SciencesYunnan UniversityKunming650091China
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3
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Peserico A, Di Berardino C, Capacchietti G, Camerano Spelta Rapini C, Liverani L, Boccaccini AR, Russo V, Mauro A, Barboni B. IVM Advances for Early Antral Follicle-Enclosed Oocytes Coupling Reproductive Tissue Engineering to Inductive Influences of Human Chorionic Gonadotropin and Ovarian Surface Epithelium Coculture. Int J Mol Sci 2023; 24:ijms24076626. [PMID: 37047595 PMCID: PMC10095509 DOI: 10.3390/ijms24076626] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/26/2023] [Accepted: 03/30/2023] [Indexed: 04/05/2023] Open
Abstract
In vitro maturation (IVM) is not a routine assisted reproductive technology (ART) for oocytes collected from early antral (EA) follicles, a large source of potentially available gametes. Despite substantial improvements in IVM in the past decade, the outcomes remain low for EA-derived oocytes due to their reduced developmental competences. To optimize IVM for ovine EA-derived oocytes, a three-dimensional (3D) scaffold-mediated follicle-enclosed oocytes (FEO) system was compared with a validated cumulus-oocyte complex (COC) protocol. Gonadotropin stimulation (eCG and/or hCG) and/or somatic cell coculture (ovarian vs. extraovarian-cell source) were supplied to both systems. The maturation rate and parthenogenetic activation were significantly improved by combining hCG stimulation with ovarian surface epithelium (OSE) cells coculture exclusively on the FEO system. Based on the data, the paracrine factors released specifically from OSE enhanced the hCG-triggering of oocyte maturation mechanisms by acting through the mural compartment (positive effect on FEO and not on COC) by stimulating the EGFR signaling. Overall, the FEO system performed on a developed reproductive scaffold proved feasible and reliable in promoting a synergic cytoplasmatic and nuclear maturation, offering a novel cultural strategy to widen the availability of mature gametes for ART.
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Affiliation(s)
- Alessia Peserico
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Chiara Di Berardino
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Giulia Capacchietti
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Chiara Camerano Spelta Rapini
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Liliana Liverani
- Institute of Biomaterials, Department of Materials Science and Engineering, Friedrich-Alexander University of Erlangen-Nuremberg, 91054 Erlangen, Germany
- DGS S.p.A., 00142 Rome, Italy
| | - Aldo Roberto Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, Friedrich-Alexander University of Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - Valentina Russo
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Annunziata Mauro
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Barbara Barboni
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
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4
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Rakha SI, Elmetwally MA, El-Sheikh Ali H, Balboula A, Mahmoud AM, Zaabel SM. Importance of Antioxidant Supplementation during In Vitro Maturation of Mammalian Oocytes. Vet Sci 2022; 9:vetsci9080439. [PMID: 36006354 PMCID: PMC9415395 DOI: 10.3390/vetsci9080439] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 08/12/2022] [Accepted: 08/14/2022] [Indexed: 11/16/2022] Open
Abstract
The in vitro embryo production (IVEP) technique is widely used in the field of reproductive biology. In vitro maturation (IVM) is the first and most critical step of IVEP, during which, the oocyte is matured in an artificial maturation medium under strict laboratory conditions. Despite all of the progress in the field of IVEP, the quality of in vitro matured oocytes remains inferior to that of those matured in vivo. The accumulation of substantial amounts of reactive oxygen species (ROS) within oocytes during IVM has been regarded as one of the main factors altering oocyte quality. One of the most promising approaches to overcome ROS accumulation within oocytes is the supplementation of oocyte IVM medium with antioxidants. In this article, we discuss recent advancements depicting the adverse effects of ROS on mammalian oocytes. We also discuss the potential use of antioxidants and their effect on both oocyte quality and IVM rate.
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Affiliation(s)
- Shimaa I. Rakha
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
- Reproductive Biotechnology Research Laboratory, College of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Mohammed A. Elmetwally
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
- Reproductive Biotechnology Research Laboratory, College of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Hossam El-Sheikh Ali
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
- Reproductive Biotechnology Research Laboratory, College of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Ahmed Balboula
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
- Reproductive Biotechnology Research Laboratory, College of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
- Animal Sciences Research Center, University of Missouri, Columbia, MO 65211, USA
| | - Abdelmonem Montaser Mahmoud
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
- Reproductive Biotechnology Research Laboratory, College of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Samy M. Zaabel
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
- Reproductive Biotechnology Research Laboratory, College of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
- Correspondence:
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5
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Hildebrandt MR, Wang Y, Li L, Yasmin L, Glubrecht DD, Godbout R. Cytoplasmic aggregation of DDX1 in developing embryos: Early embryonic lethality associated with Ddx1 knockout. Dev Biol 2019; 455:420-433. [DOI: 10.1016/j.ydbio.2019.07.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 07/04/2019] [Accepted: 07/19/2019] [Indexed: 01/12/2023]
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6
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Moore EL, Wang S, Larina IV. Staging mouse preimplantation development in vivo using optical coherence microscopy. JOURNAL OF BIOPHOTONICS 2019; 12:e201800364. [PMID: 30578614 PMCID: PMC6470020 DOI: 10.1002/jbio.201800364] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 12/10/2018] [Accepted: 12/19/2018] [Indexed: 05/19/2023]
Abstract
In mammals, preimplantation development primarily occurs in the oviduct (or fallopian tube) where fertilized oocytes migrate through, develop and divide as they prepare for implantation in the uterus. Studies of preimplantation development currently rely on ex vivo experiments with the embryos cultured outside of the oviduct, neglecting the native environment for embryonic growth. This prevents the understanding of the natural process of preimplantation development and the roles of the oviduct in early embryonic health. Here, we report an in vivo optical imaging approach enabling high-resolution visualizations of developing embryos in the mouse oviduct. By combining optical coherence microscopy (OCM) and a dorsal imaging window, the subcellular structures and morphologies of unfertilized oocytes, zygotes and preimplantation embryos can be well resolved in vivo, allowing for the staging of development. We present the results together with bright-field microscopy images to show the comparable imaging quality. As the mouse is a well-established model with a variety of genetic engineering strategies available, the in vivo imaging approach opens great opportunities to investigate how the oviduct and early embryos interact to prepare for successful implantation. This knowledge could have beneficial impact on understanding infertility and improving in vitro fertilization. OCM through a dorsal imaging window enables high-resolution imaging and staging of mouse preimplantation embryos in vivo in the oviduct.
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Affiliation(s)
- Emma L. Moore
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, U.S.A
| | - Shang Wang
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, U.S.A
| | - Irina V. Larina
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, U.S.A
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7
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von Wolff M, Andersen CY, Woodruff TK, Nawroth F. FertiPROTEKT, Oncofertility Consortium and the Danish Fertility-Preservation Networks - What Can We Learn From Their Experiences? CLINICAL MEDICINE INSIGHTS. REPRODUCTIVE HEALTH 2019; 13:1179558119845865. [PMID: 31068758 PMCID: PMC6495450 DOI: 10.1177/1179558119845865] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Accepted: 02/27/2019] [Indexed: 01/18/2023]
Abstract
Fertility preservation is an increasingly important discipline. It requires close coordination between reproductive medicine specialists, reproductive biologists, and oncologists in various disciplines. In addition, it represents a particular health policy challenge, since fertility-protection measures are to be understood as a treatment for side effects of gonadotoxic treatments and would therefore normally have to be reimbursed by health insurance companies. Therefore, it is inevitable that fertility-preservation activities should organise themselves into a network structure both as a medical-logistic network and as a professional medical society. The necessary network structures can differ significantly at regional, national, and international level, as the size of the regions to be integrated and the local cultural and geographical conditions, as well as the political conditions are very different. To address these issues, the current review aims to point out the basic importance and the chances but also the difficulties of fertility-protection networks and give practical guidance for the development of such network structures. We will not only discuss network structures theoretically but also present them based on three established, different sized networks, such as the Danish Network (www.rigshospitalet.dk), representing a centralised network in a small country; the German-Austrian-Swiss network FertiPROTEKT® (www.fertiprotekt.com), representing a centralised as well as decentralised network in a large country; and the Oncofertility® Consortium (www.oncofertility.northwestern.edu), representing a decentralised, internationally oriented network, primarily serving the transfer of knowledge among its members.
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Affiliation(s)
- Michael von Wolff
- University Women’s Hospital, Division of Gynaecological Endocrinology and Reproductive Medicine, Inselspital, University Hospital, Bern, Switzerland
| | - Claus Yding Andersen
- Laboratory of Reproductive Biology, Faculty of Health Science, The Juliane Marie Centre for Women, Children and Reproduction, University Hospital of Copenhagen, University of Copenhagen, Copenhagen, Denmark
| | - Teresa K Woodruff
- Department of Obstetrics and Gynecology, Northwestern University, Chicago, IL, USA
| | - Frank Nawroth
- Centre for Infertility, Prenatal Medicine, Endocrinology and Osteology, Amedes group, Hamburg, Germany
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8
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Sato A, Sarentonglaga B, Ogata K, Yamaguchi M, Hara A, Atchalalt K, Sugane N, Fukumori R, Nagao Y. Effects of insulin-like growth factor-1 on the in vitro maturation of canine oocytes. J Reprod Dev 2017; 64:83-88. [PMID: 29212962 PMCID: PMC5830362 DOI: 10.1262/jrd.2017-145] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The maturation rate of canine oocytes during in vitro maturation (IVM) needs to be improved. The present study was designed to evaluate the effects of insulin-like growth factor-1 (IGF-1) on the IVM of canine oocytes. Ovaries were obtained by ovariohysterectomy and were sliced to release cumulus-oocyte complexes (COCs). In Experiment 1, the effects of different concentrations of IGF-1 on the nuclear maturation of oocytes was investigated. The COCs were cultured in a modified medium (mTCM199) with IGF-1 (0, 0.5, 5, 10, and 50 µg/ml). At the end of the 48 h culture, oocytes were fixed and stained to evaluate their nuclear stage. Supplementation with 50 µg/ml IGF-1 induced a significantly higher metaphase II (MII) rate (P < 0.05) compared to the 0 and 0.5 μg/ml IGF-1 groups. In Experiment 2, the expression levels of insulin receptor (INSR), IGF-1 receptor (IGF-1R), and IGF-2 receptor (IGF-2R) genes, localized to canine oocytes and cumulus cells, were investigated before and after IVM. The expression level of IGF-1R in cumulus cells after IVM was higher than that before IVM (P < 0.05). In Experiment 3, it was investigated whether an inhibitor of PTEN (phosphatase and tensin homolog), bpV, affects the nuclear maturation of oocytes. Regardless of bpV supplementation at a concentration of 0.2 to 200 µmol/l, there was no significant difference in the proportion of oocytes that reached the MII stage. These results indicated that IGF-1 has a favorable effect on the IVM of canine oocytes, possibly through the stimulation of the Ras/MAPK pathway via IGF-1R expressed in cumulus cells.
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Affiliation(s)
- Akane Sato
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Department of Animal Production Science, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan
| | | | - Kazuko Ogata
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Present: National Livestock Breeding Center, Fukushima 961-8061, Japan
| | - Mio Yamaguchi
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Present: Local Independent Administrative Agency Hokkaido Research Organization, Hokkaido 081-0038, Japan
| | - Asuka Hara
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Department of Animal Production Science, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan
| | - Khurchabiling Atchalalt
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Department of Animal Production Science, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan
| | - Naoko Sugane
- East Japan Guide Dog Association, Tochigi 321-0342, Japan
| | - Rika Fukumori
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Present: Rakuno Gakuen University, Hokkaido 069-0836, Japan
| | - Yoshikazu Nagao
- University Farm, Faculty of Agriculture, Utsunomiya University, Tochigi 321-4415, Japan.,Department of Animal Production Science, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-0054, Japan
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9
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Guenther V, Alkatout I, Junkers W, Bauerschlag D, Maass N, von Otte S. Fertility Preservation in Female Patients with Breast Cancer - a Current Overview. Geburtshilfe Frauenheilkd 2017; 77:1088-1094. [PMID: 29093602 PMCID: PMC5658233 DOI: 10.1055/s-0043-119543] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 09/08/2017] [Accepted: 09/11/2017] [Indexed: 12/12/2022] Open
Abstract
Many premenopausal patients who develop breast cancer have not yet completed their family planning, so measures of fertility protection to preserve their fertile potential would be beneficial. Polychemotherapy causes irreversible damage to the ovarian follicles – irrespective of whether in a neoadjuvant or adjuvant setting – and this can sometimes result in permanent infertility. Depending on which cytostatic agents are used and on the age-related ovarian reserve of the woman, gonadotoxic risk must be classified as low, moderate or high. Options of fertility preservation include: a) cryopreservation of fertilised or unfertilised oocytes. After ovarian hyperstimulation, mature oocytes are retrieved by transvaginal follicle aspiration, after which they are cryopreserved, either unfertilised or on completion of IVF or ICSI treatment. During b) cryopreservation of ovarian tissue, about 50% of the ovarian cortex of one ovary is resected with the aid of a laparoscopic procedure and cryopreserved. The application of c) GnRH agonists as a medicinal therapy option is an attempt at endocrine ovarian suppression in order to protect oocytes, granulosa cells and theca cells from the cytotoxic effect of chemotherapy.
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Affiliation(s)
- Veronika Guenther
- Department of Gynaecology and Obstetrics, UKSH Campus Kiel, Kiel, Germany
| | - Ibrahim Alkatout
- Department of Gynaecology and Obstetrics, UKSH Campus Kiel, Kiel, Germany
| | - Wiebe Junkers
- University Fertility Centre, Medical Care Centre, University Medical Centre Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Dirk Bauerschlag
- Department of Gynaecology and Obstetrics, UKSH Campus Kiel, Kiel, Germany
| | - Nicolai Maass
- Department of Gynaecology and Obstetrics, UKSH Campus Kiel, Kiel, Germany
| | - Soeren von Otte
- University Fertility Centre, Medical Care Centre, University Medical Centre Schleswig-Holstein, Campus Kiel, Kiel, Germany
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10
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Singaravelu G, Rahimi S, Krauchunas A, Rizvi A, Dharia S, Shakes D, Smith H, Golden A, Singson A. Forward Genetics Identifies a Requirement for the Izumo-like Immunoglobulin Superfamily spe-45 Gene in Caenorhabditis elegans Fertilization. Curr Biol 2015; 25:3220-4. [PMID: 26671668 DOI: 10.1016/j.cub.2015.10.055] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 10/22/2015] [Accepted: 10/26/2015] [Indexed: 01/27/2023]
Abstract
Fertilization is a conserved process in all sexually reproducing organisms whereby sperm bind and fuse with oocytes. Despite the importance of sperm-oocyte interactions in fertilization, the molecular underpinnings of this process are still not well understood. The only cognate ligand-receptor pair identified in the context of fertilization is sperm-surface Izumo and egg-surface Juno in the mouse [1]. Here we describe a genetic screening strategy to isolate fertilization mutants in Caenorhabditis elegans in order to generate a more complete inventory of molecules required for gamete interactions. From this screening strategy, we identified, cloned, and characterized spe-45, a gene that encodes an Izumo-like immunoglobulin superfamily protein. Mammalian Izumo is required for male fertility and has the same basic mutant phenotype as spe-45. Worms lacking spe-45 function produce morphologically normal and motile sperm that cannot fuse with oocytes despite direct contact in the reproductive tract. The power of this screen to identify proteins with ancient sperm functions suggests that characterization of additional mutants from our screen may reveal other deeply conserved components in fertility pathways and complement studies in other organisms.
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Affiliation(s)
- Gunasekaran Singaravelu
- Waksman Institute of Microbiology, Rutgers University, 190 Frelinghuysen Road, Piscataway, NJ 08854, USA
| | - Sina Rahimi
- Waksman Institute of Microbiology, Rutgers University, 190 Frelinghuysen Road, Piscataway, NJ 08854, USA
| | - Amber Krauchunas
- Waksman Institute of Microbiology, Rutgers University, 190 Frelinghuysen Road, Piscataway, NJ 08854, USA
| | - Anam Rizvi
- Waksman Institute of Microbiology, Rutgers University, 190 Frelinghuysen Road, Piscataway, NJ 08854, USA
| | - Sunny Dharia
- Waksman Institute of Microbiology, Rutgers University, 190 Frelinghuysen Road, Piscataway, NJ 08854, USA
| | - Diane Shakes
- College of William and Mary, PO Box 8795, Williamsburg, VA 23187, USA
| | - Harold Smith
- National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD 20892, USA
| | - Andy Golden
- National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD 20892, USA
| | - Andrew Singson
- Waksman Institute of Microbiology, Rutgers University, 190 Frelinghuysen Road, Piscataway, NJ 08854, USA.
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