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Li Y, Adur MK, Lonergan SM, Keating AF, Ross JW. MicroRNA21 inhibition affects porcine oocyte maturation and alters protein expression critical for metabolic pathway function. Mol Reprod Dev 2022; 89:443-458. [PMID: 36001642 PMCID: PMC9804257 DOI: 10.1002/mrd.23641] [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: 02/03/2022] [Revised: 06/08/2022] [Accepted: 08/12/2022] [Indexed: 01/05/2023]
Abstract
MicroRNA21 (MIR21) abundance in porcine oocytes and cumulus cells increases during in vitro maturation. The mechanism by which MIR21 regulates oocyte maturation and the effect on the developmental competence of subsequent embryos remains unclear. The objective of this study was to assess the function of MIR21 during porcine oocyte maturation and its effect on embryonic development. Treatment with peptide nucleic acid MIR21 inhibitor (MIR21-PNA), designed to specifically bind to and prevent MIR21 activity during in vitro oocyte maturation, decreased cumulus cell expansion, and the oocyte ability to achieve metaphase II maturation stage when compared to control groups. Following parthenogenetic activation, the cleavage rate at 48 h in the MIR21-PNA group was decreased (p ≤ 0.03) relative to the control groups. Additionally, liquid chromatography-mass spectrometry (LC-MS/MS) of oocyte and cumulus cell total protein following MIR21-PNA treatment during in vitro maturation identified changes in signaling pathways with primary involvement of glucose metabolism (GM) pathways. Furthermore, there was no difference (p = 0.21) in oocyte maturation of control and MIR21-PNA treated oocytes when cultured in pyruvate lacking medium. Finally, MIR21-PNA treatment decreased (p = 0.04) glutathione and increased (p = 0.07) reactive oxygen species production in the oocyte. These data suggest that MIR21 influences porcine oocyte maturation by regulating GM pathways in the cumulus-oocyte complex.
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Affiliation(s)
- Yunsheng Li
- Department of Animal ScienceIowa State UniversityAmesIowaUSA,College of Animal Science and TechnologyAnhui Agricultural UniversityHefeiChina
| | | | | | | | - Jason W. Ross
- Department of Animal ScienceIowa State UniversityAmesIowaUSA
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Tang PC, MacKay GE, Flockhart JH, Keighren MA, Kopakaki A, West JD. Selection against BALB/c strain cells in mouse chimaeras. Biol Open 2018; 7:7/1/bio030189. [PMID: 29330350 PMCID: PMC5829504 DOI: 10.1242/bio.030189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
It has been shown previously that BALB/c strain embryos tend to contribute poorly to mouse aggregation chimaeras. In the present study we showed that BALB/c cells were not preferentially allocated to any extraembryonic lineages of mouse aggregation chimaeras, but their contribution decreased during the early postimplantation period and they were significantly depleted by E8.5. The development of BALB/c strain preimplantation embryos lagged behind embryos from some other strains and the contribution that BALB/c and other embryos made to chimaeras correlated with their developmental stage at E2.5. This relationship suggests that the poor contribution of BALB/c embryos to aggregation chimaeras is at least partly a consequence of generalised selection related to slow or delayed preimplantation development. The suitability of BALB/c embryos for maximising the ES cell contribution to mouse ES cell chimaeras is also discussed. Summary: BALB/c strain embryos contributed poorly to mouse aggregation chimaeras by E8.5. Selection appears linked to slow BALB/c development and might also explain the good ES cell contribution in BALB/c↔ES-cell chimaeras.
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Affiliation(s)
- Pin-Chi Tang
- Genes and Development Group, Centre for Integrative Physiology, Clinical Sciences, University of Edinburgh Medical School, Hugh Robson Building, George Square, Edinburgh, EH8 9XD, UK.,Obstetrics and Gynaecology Section, Clinical Sciences, University of Edinburgh Medical School, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - Gillian E MacKay
- Genes and Development Group, Centre for Integrative Physiology, Clinical Sciences, University of Edinburgh Medical School, Hugh Robson Building, George Square, Edinburgh, EH8 9XD, UK.,Obstetrics and Gynaecology Section, Clinical Sciences, University of Edinburgh Medical School, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - Jean H Flockhart
- Genes and Development Group, Centre for Integrative Physiology, Clinical Sciences, University of Edinburgh Medical School, Hugh Robson Building, George Square, Edinburgh, EH8 9XD, UK.,Obstetrics and Gynaecology Section, Clinical Sciences, University of Edinburgh Medical School, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - Margaret A Keighren
- Genes and Development Group, Centre for Integrative Physiology, Clinical Sciences, University of Edinburgh Medical School, Hugh Robson Building, George Square, Edinburgh, EH8 9XD, UK.,Obstetrics and Gynaecology Section, Clinical Sciences, University of Edinburgh Medical School, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - Anna Kopakaki
- Obstetrics and Gynaecology Section, Clinical Sciences, University of Edinburgh Medical School, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - John D West
- Genes and Development Group, Centre for Integrative Physiology, Clinical Sciences, University of Edinburgh Medical School, Hugh Robson Building, George Square, Edinburgh, EH8 9XD, UK .,Obstetrics and Gynaecology Section, Clinical Sciences, University of Edinburgh Medical School, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
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