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Zielinska AP, Bellou E, Sharma N, Frombach AS, Seres KB, Gruhn JR, Blayney M, Eckel H, Moltrecht R, Elder K, Hoffmann ER, Schuh M. Meiotic Kinetochores Fragment into Multiple Lobes upon Cohesin Loss in Aging Eggs. Curr Biol 2019; 29:3749-3765.e7. [PMID: 31679939 PMCID: PMC6868511 DOI: 10.1016/j.cub.2019.09.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 07/23/2019] [Accepted: 09/04/2019] [Indexed: 01/02/2023]
Abstract
Chromosome segregation errors during female meiosis are a leading cause of pregnancy loss and human infertility. The segregation of chromosomes is driven by interactions between spindle microtubules and kinetochores. Kinetochores in mammalian oocytes are subjected to special challenges: they need to withstand microtubule pulling forces over multiple hours and are built on centromeric chromatin that in humans is decades old. In meiosis I, sister kinetochores are paired and oriented toward the same spindle pole. It is well established that they progressively separate from each other with advancing female age. However, whether aging also affects the internal architecture of centromeres and kinetochores is currently unclear. Here, we used super-resolution microscopy to study meiotic centromere and kinetochore organization in metaphase-II-arrested eggs from three mammalian species, including humans. We found that centromeric chromatin decompacts with advancing maternal age. Kinetochores built on decompacted centromeres frequently lost their integrity and fragmented into multiple lobes. Fragmentation extended across inner and outer kinetochore regions and affected over 30% of metaphase-II-arrested (MII) kinetochores in aged women and mice, making the lobular architecture a prominent feature of the female meiotic kinetochore. We demonstrate that a partial cohesin loss, as is known to occur in oocytes with advancing maternal age, is sufficient to trigger centromere decompaction and kinetochore fragmentation. Microtubule pulling forces further enhanced the fragmentation and shaped the arrangement of kinetochore lobes. Fragmented kinetochores were frequently abnormally attached to spindle microtubules, suggesting that kinetochore fragmentation could contribute to the maternal age effect in mammalian eggs.
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Affiliation(s)
- Agata P Zielinska
- Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, Göttingen 37077, Germany
| | - Eirini Bellou
- Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, Göttingen 37077, Germany
| | - Ninadini Sharma
- Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, Göttingen 37077, Germany
| | - Ann-Sophie Frombach
- Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, Göttingen 37077, Germany
| | - K Bianka Seres
- Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, Göttingen 37077, Germany; Bourn Hall Clinic, High Street, Cambridge CB23 2TN, UK
| | - Jennifer R Gruhn
- DNRF Center for Chromosome Stability, Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, Copenhagen DK-2200, Denmark
| | | | - Heike Eckel
- Kinderwunschzentrum, Kasseler Landstraße 25A, Göttingen 37081, Germany
| | - Rüdiger Moltrecht
- Kinderwunschzentrum, Kasseler Landstraße 25A, Göttingen 37081, Germany
| | - Kay Elder
- Bourn Hall Clinic, High Street, Cambridge CB23 2TN, UK
| | - Eva R Hoffmann
- DNRF Center for Chromosome Stability, Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3, Copenhagen DK-2200, Denmark
| | - Melina Schuh
- Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, Göttingen 37077, Germany.
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Gruhn JR, Zielinska AP, Shukla V, Blanshard R, Capalbo A, Cimadomo D, Nikiforov D, Chan ACH, Newnham LJ, Vogel I, Scarica C, Krapchev M, Taylor D, Kristensen SG, Cheng J, Ernst E, Bjørn AMB, Colmorn LB, Blayney M, Elder K, Liss J, Hartshorne G, Grøndahl ML, Rienzi L, Ubaldi F, McCoy R, Lukaszuk K, Andersen CY, Schuh M, Hoffmann ER. Chromosome errors in human eggs shape natural fertility over reproductive life span. Science 2019; 365:1466-1469. [PMID: 31604276 PMCID: PMC7212007 DOI: 10.1126/science.aav7321] [Citation(s) in RCA: 194] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 09/04/2019] [Indexed: 12/25/2022]
Abstract
Chromosome errors, or aneuploidy, affect an exceptionally high number of human conceptions, causing pregnancy loss and congenital disorders. Here, we have followed chromosome segregation in human oocytes from females aged 9 to 43 years and report that aneuploidy follows a U-curve. Specific segregation error types show different age dependencies, providing a quantitative explanation for the U-curve. Whole-chromosome nondisjunction events are preferentially associated with increased aneuploidy in young girls, whereas centromeric and more extensive cohesion loss limit fertility as women age. Our findings suggest that chromosomal errors originating in oocytes determine the curve of natural fertility in humans.
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Affiliation(s)
- Jennifer R Gruhn
- DNRF Center for Chromosome Stability, Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Agata P Zielinska
- Max Planck Institute for Biophysical Chemistry, Department of Meiosis, Göttingen, Germany
| | - Vallari Shukla
- DNRF Center for Chromosome Stability, Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Robert Blanshard
- Genome Damage and Stability Centre, School of Life Sciences, University of Sussex, Brighton, UK
- Illumina Inc., Fulbourn, UK
| | | | - Danilo Cimadomo
- G.en.e.r.a., Centers for Reproductive Medicine, Clinica Valle Giulia, via de notaris 2b, 00197 Rome, Italy
| | - Dmitry Nikiforov
- Laboratory of Reproductive Biology, The Juliane Marie Centre for Women, Children and Reproduction, Copenhagen University Hospital and Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
- Unit of Basic and Applied Biosciences, Università degli studi di Teramo, Teramo, Italy
| | - Andrew Chi-Ho Chan
- DNRF Center for Chromosome Stability, Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Louise J Newnham
- Genome Damage and Stability Centre, School of Life Sciences, University of Sussex, Brighton, UK
| | - Ivan Vogel
- DNRF Center for Chromosome Stability, Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Catello Scarica
- DAHFMO, Unit of Histology and Medical Embryology, Sapienza, University of Rome, Italy
| | - Marta Krapchev
- INVICTA Fertility and Reproductive Center, Gdańsk, Poland
| | - Deborah Taylor
- Warwick Medical School, University of Warwick and Centre for Reproductive Medicine, University Hospital Coventry, UK
| | - Stine Gry Kristensen
- Laboratory of Reproductive Biology, The Juliane Marie Centre for Women, Children and Reproduction, Copenhagen University Hospital and Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Junping Cheng
- Laboratory of Reproductive Biology, The Juliane Marie Centre for Women, Children and Reproduction, Copenhagen University Hospital and Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Erik Ernst
- Department of Obstetrics and Gynaecology, University Hospital of Aarhus, Skejby Sygehus, Aarhus, Denmark
| | - Anne-Mette Bay Bjørn
- Department of Obstetrics and Gynaecology, University Hospital of Aarhus, Skejby Sygehus, Aarhus, Denmark
| | - Lotte Berdiin Colmorn
- The Fertility Clinic, The Juliane Marie Centre for Women, Children and Reproduction, Copenhagen University Rigshospitalet, Denmark
| | | | | | - Joanna Liss
- INVICTA Fertility and Reproductive Center, Gdańsk, Poland
- Department of Biology and Medical Genetics, University of Gdańsk, Gdańsk, Poland
| | - Geraldine Hartshorne
- Warwick Medical School, University of Warwick and Centre for Reproductive Medicine, University Hospital Coventry, UK
| | - Marie Louise Grøndahl
- Department of Obstetrics and Gynaecology, Department of Reproductive Medicine, Copenhagen University Hospital Herlev, Denmark
| | - Laura Rienzi
- G.en.e.r.a., Centers for Reproductive Medicine, Clinica Valle Giulia, via de notaris 2b, 00197 Rome, Italy
| | - Filippo Ubaldi
- G.en.e.r.a., Centers for Reproductive Medicine, Clinica Valle Giulia, via de notaris 2b, 00197 Rome, Italy
| | - Rajiv McCoy
- Department of Biology, Johns Hopkins University, Baltimore, MD, USA
| | - Krzysztof Lukaszuk
- INVICTA Fertility and Reproductive Center, Gdańsk, Poland
- Department of Obstetrics and Gynaecological Nursing, Faculty of Health Sciences, Medical University of Gdańsk, Gdańsk, Poland
- Department of Gynaecological Endocrinology, Medical University of Warsaw, Warsaw, Poland
| | - Claus Yding Andersen
- Laboratory of Reproductive Biology, The Juliane Marie Centre for Women, Children and Reproduction, Copenhagen University Hospital and Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Melina Schuh
- Max Planck Institute for Biophysical Chemistry, Department of Meiosis, Göttingen, Germany
| | - Eva R Hoffmann
- DNRF Center for Chromosome Stability, Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
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