Maternal spindle transfer overcomes embryo developmental arrest caused by ooplasmic defects in mice

The developmental potential of early embryos is mainly dictated by the quality of the oocyte. Here, we explore the utility of the maternal spindle transfer (MST) technique as a reproductive approach to enhance oocyte developmental competence. Our proof-of-concept experiments show that replacement of...

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Main Authors: Nuno Costa-Borges, Katharina Spath, Irene Miguel-Escalada, Enric Mestres, Rosa Balmaseda, Anna Serafín, Maria Garcia-Jiménez, Ivette Vanrell, Jesús González, Klaus Rink, Dagan Wells, Gloria Calderón
Format: Article
Language:English
Published: eLife Sciences Publications Ltd 2020-04-01
Series:eLife
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Online Access:https://elifesciences.org/articles/48591
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author Nuno Costa-Borges
Katharina Spath
Irene Miguel-Escalada
Enric Mestres
Rosa Balmaseda
Anna Serafín
Maria Garcia-Jiménez
Ivette Vanrell
Jesús González
Klaus Rink
Dagan Wells
Gloria Calderón
author_facet Nuno Costa-Borges
Katharina Spath
Irene Miguel-Escalada
Enric Mestres
Rosa Balmaseda
Anna Serafín
Maria Garcia-Jiménez
Ivette Vanrell
Jesús González
Klaus Rink
Dagan Wells
Gloria Calderón
author_sort Nuno Costa-Borges
collection DOAJ
description The developmental potential of early embryos is mainly dictated by the quality of the oocyte. Here, we explore the utility of the maternal spindle transfer (MST) technique as a reproductive approach to enhance oocyte developmental competence. Our proof-of-concept experiments show that replacement of the entire cytoplasm of oocytes from a sensitive mouse strain overcomes massive embryo developmental arrest characteristic of non-manipulated oocytes. Genetic analysis confirmed minimal carryover of mtDNA following MST. Resulting mice showed low heteroplasmy levels in multiple organs at adult age, normal histology and fertility. Mice were followed for five generations (F5), revealing that heteroplasmy was reduced in F2 mice and was undetectable in the subsequent generations. This pre-clinical model demonstrates the high efficiency and potential of the MST technique, not only to prevent the transmission of mtDNA mutations, but also as a new potential treatment for patients with certain forms of infertility refractory to current clinical strategies.
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spelling doaj.art-f843ab1de4354b3eaeac8a70e16c467d2022-12-22T02:01:15ZengeLife Sciences Publications LtdeLife2050-084X2020-04-01910.7554/eLife.48591Maternal spindle transfer overcomes embryo developmental arrest caused by ooplasmic defects in miceNuno Costa-Borges0https://orcid.org/0000-0002-2073-7515Katharina Spath1Irene Miguel-Escalada2https://orcid.org/0000-0003-3461-6404Enric Mestres3https://orcid.org/0000-0001-6140-6416Rosa Balmaseda4Anna Serafín5Maria Garcia-Jiménez6https://orcid.org/0000-0003-3321-8869Ivette Vanrell7Jesús González8Klaus Rink9Dagan Wells10Gloria Calderón11https://orcid.org/0000-0003-3235-0323Embryotools, Parc Cientific de Barcelona, Barcelona, SpainNuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, United Kingdom; Juno Genetics, Winchester House, Oxford Science Park, Oxford, United KingdomGenomics and Bioinformatics, Centre for Genomic Regulation, Barcelona, SpainEmbryotools, Parc Cientific de Barcelona, Barcelona, SpainPCB Animal Facility, Parc Cientific de Barcelona, Barcelona, SpainPCB Animal Facility, Parc Cientific de Barcelona, Barcelona, SpainEmbryotools, Parc Cientific de Barcelona, Barcelona, SpainEmbryotools, Parc Cientific de Barcelona, Barcelona, SpainPCB Animal Facility, Parc Cientific de Barcelona, Barcelona, SpainEmbryotools, Parc Cientific de Barcelona, Barcelona, SpainNuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, United Kingdom; Juno Genetics, Winchester House, Oxford Science Park, Oxford, United KingdomEmbryotools, Parc Cientific de Barcelona, Barcelona, SpainThe developmental potential of early embryos is mainly dictated by the quality of the oocyte. Here, we explore the utility of the maternal spindle transfer (MST) technique as a reproductive approach to enhance oocyte developmental competence. Our proof-of-concept experiments show that replacement of the entire cytoplasm of oocytes from a sensitive mouse strain overcomes massive embryo developmental arrest characteristic of non-manipulated oocytes. Genetic analysis confirmed minimal carryover of mtDNA following MST. Resulting mice showed low heteroplasmy levels in multiple organs at adult age, normal histology and fertility. Mice were followed for five generations (F5), revealing that heteroplasmy was reduced in F2 mice and was undetectable in the subsequent generations. This pre-clinical model demonstrates the high efficiency and potential of the MST technique, not only to prevent the transmission of mtDNA mutations, but also as a new potential treatment for patients with certain forms of infertility refractory to current clinical strategies.https://elifesciences.org/articles/48591InfertilitySpindle transferoocytesmitochondrial DNAheteroplasmyembryo development
spellingShingle Nuno Costa-Borges
Katharina Spath
Irene Miguel-Escalada
Enric Mestres
Rosa Balmaseda
Anna Serafín
Maria Garcia-Jiménez
Ivette Vanrell
Jesús González
Klaus Rink
Dagan Wells
Gloria Calderón
Maternal spindle transfer overcomes embryo developmental arrest caused by ooplasmic defects in mice
eLife
Infertility
Spindle transfer
oocytes
mitochondrial DNA
heteroplasmy
embryo development
title Maternal spindle transfer overcomes embryo developmental arrest caused by ooplasmic defects in mice
title_full Maternal spindle transfer overcomes embryo developmental arrest caused by ooplasmic defects in mice
title_fullStr Maternal spindle transfer overcomes embryo developmental arrest caused by ooplasmic defects in mice
title_full_unstemmed Maternal spindle transfer overcomes embryo developmental arrest caused by ooplasmic defects in mice
title_short Maternal spindle transfer overcomes embryo developmental arrest caused by ooplasmic defects in mice
title_sort maternal spindle transfer overcomes embryo developmental arrest caused by ooplasmic defects in mice
topic Infertility
Spindle transfer
oocytes
mitochondrial DNA
heteroplasmy
embryo development
url https://elifesciences.org/articles/48591
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