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Briski O, La Motta GE, Ratner LD, Allegroni FA, Pillado S, Álvarez G, Gutierrez B, Tarragona L, Zaccagnini A, Acerbo M, Ciampi C, Fernández-Martin R, Salamone DF. Comparison of ICSI, IVF, and in vivo derived embryos to produce CRISPR-Cas9 gene-edited pigs for xenotransplantation. Theriogenology 2024; 220:43-55. [PMID: 38471390 DOI: 10.1016/j.theriogenology.2024.02.028] [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: 12/19/2023] [Revised: 02/26/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024]
Abstract
Genome editing in pigs for xenotransplantation has seen significant advances in recent years. This study compared three methodologies to generate gene-edited embryos, including co-injection of sperm together with the CRISPR-Cas9 system into oocytes, named ICSI-MGE (mediated gene editing); microinjection of CRISPR-Cas9 components into oocytes followed by in vitro fertilization (IVF), and microinjection of in vivo fertilized zygotes with the CRISPR-Cas9 system. Our goal was to knock-out (KO) porcine genes involved in the biosynthesis of xenoantigens responsible for the hyperacute rejection of interspecific xenografts, namely GGTA1, CMAH, and β4GalNT2. Additionally, we attempted to KO the growth hormone receptor (GHR) gene with the aim of limiting the growth of porcine organs to a size that is physiologically suitable for human transplantation. Embryo development, pregnancy, and gene editing rates were evaluated. We found an efficient mutation of the GGTA1 gene following ICSI-MGE, comparable to the results obtained through the microinjection of oocytes followed by IVF. ICSI-MGE also showed higher rates of biallelic mutations compared to the other techniques. Five healthy piglets were born from in vivo-derived embryos, all of them exhibiting biallelic mutations in the GGTA1 gene, with three displaying mutations in the GHR gene. No mutations were observed in the CMAH and β4GalNT2 genes. In conclusion, in vitro methodologies showed high rates of gene-edited embryos. Specifically, ICSI-MGE proved to be an efficient technique for obtaining homozygous biallelic mutated embryos. Lastly, only live births were obtained from in vivo-derived embryos showing efficient multiple gene editing for GGTA1 and GHR.
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Affiliation(s)
- Olinda Briski
- CONICET-Universidad de Buenos Aires - Instituto de Investigaciones en Producción Animal (INPA), Ciudad Autónoma de Buenos Aires, C1425FQB, Argentina; Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, C1417DSE, Argentina
| | - Gastón Emilio La Motta
- CONICET-Universidad de Buenos Aires - Instituto de Investigaciones en Producción Animal (INPA), Ciudad Autónoma de Buenos Aires, C1425FQB, Argentina
| | - Laura Daniela Ratner
- CONICET-Universidad de Buenos Aires - Instituto de Investigaciones en Producción Animal (INPA), Ciudad Autónoma de Buenos Aires, C1425FQB, Argentina; Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, C1417DSE, Argentina
| | - Federico Andrés Allegroni
- Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, C1417DSE, Argentina
| | - Santiago Pillado
- Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, C1417DSE, Argentina
| | - Guadalupe Álvarez
- Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, C1417DSE, Argentina
| | - Betiana Gutierrez
- Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, C1417DSE, Argentina
| | - Lisa Tarragona
- Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, C1417DSE, Argentina
| | - Andrea Zaccagnini
- Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, C1417DSE, Argentina
| | - Marcelo Acerbo
- Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, C1417DSE, Argentina
| | - Carla Ciampi
- CONICET-Universidad de Buenos Aires - Instituto de Investigaciones en Producción Animal (INPA), Ciudad Autónoma de Buenos Aires, C1425FQB, Argentina; Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, C1417DSE, Argentina
| | - Rafael Fernández-Martin
- CONICET-Universidad de Buenos Aires - Instituto de Investigaciones en Producción Animal (INPA), Ciudad Autónoma de Buenos Aires, C1425FQB, Argentina; Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, C1417DSE, Argentina.
| | - Daniel Felipe Salamone
- CONICET-Universidad de Buenos Aires - Instituto de Investigaciones en Producción Animal (INPA), Ciudad Autónoma de Buenos Aires, C1425FQB, Argentina; Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, C1417DSE, Argentina.
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Velazquez MA, Idriss A, Chavatte-Palmer P, Fleming TP. The mammalian preimplantation embryo: Its role in the environmental programming of postnatal health and performance. Anim Reprod Sci 2023; 256:107321. [PMID: 37647800 DOI: 10.1016/j.anireprosci.2023.107321] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/02/2023] [Accepted: 08/17/2023] [Indexed: 09/01/2023]
Abstract
During formation of the preimplantation embryo several cellular and molecular milestones take place, making the few cells forming the early embryo vulnerable to environmental stressors than can impair epigenetic reprogramming and controls of gene expression. Although these molecular alterations can result in embryonic death, a significant developmental plasticity is present in the preimplantation embryo that promotes full-term pregnancy. Prenatal epigenetic modifications are inherited during mitosis and can perpetuate specific phenotypes during early postnatal development and adulthood. As such, the preimplantation phase is a developmental window where developmental programming can take place in response to the embryonic microenvironment present in vivo or in vitro. In this review, the relevance of the preimplantation embryo as a developmental stage where offspring health and performance can be programmed is discussed, with emphasis on malnutrition and assisted reproductive technologies; two major environmental insults with important implications for livestock production and human reproductive medicine.
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Affiliation(s)
- Miguel A Velazquez
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK.
| | - Abdullah Idriss
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK; Pathology and laboratory medicine, King Faisal Specialist Hospital and Research Centre, P.O. Box 40047, MBC J-10, Jeddah 21499, Kingdom of Saudi Arabia
| | - Pascale Chavatte-Palmer
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350 Jouy-en-Josas, France; Ecole Nationale Vétérinaire d'Alfort, BREED, 94700 Maisons-Alfort, France
| | - Tom P Fleming
- Biological Sciences, University of Southampton, Southampton, UK
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Ma X, Wang J, Wang L, Yan L, Liu Y, Ma W, Ji P, Zhang L, Liu G. The Uterine Melatonergic Systems of AANAT and Melatonin Membrane Receptor 2 (MT2) Are Essential for Endometrial Receptivity and Early Implantation in Mice. Int J Mol Sci 2023; 24:ijms24087127. [PMID: 37108290 PMCID: PMC10139237 DOI: 10.3390/ijms24087127] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/06/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
In the current study, using Aanat and Mt2 KO mice, we observed that the preservation of the melatonergic system is essential for successful early pregnancy in mice. We identified that aralkylamine N-acetyltransferase (AANAT), melatonin receptor 1A (MT1), and melatonin receptor 1B (MT2) were all expressed in the uterus. Due to the relatively weak expression of MT1 compared to AANAT and MT2, this study focused on AANAT and MT2. Aanat and Mt2 KO significantly reduced the early implantation sites and the abnormal morphology of the endometrium of the uterus. Mechanistical analysis indicated that the melatonergic system is the key player in the induction of the normal nidatory estrogen (E2) response for endometrial receptivity and functions by activating the STAT signaling pathway. Its deficiency impaired the interactions between the endometrium, the placenta, and the embryo. The reduction in melatonin production caused by Aanat KO and the impairment of signal transduction caused by Mt2 KO reduced the uterine MMP-2 and MMP-9 activity, resulting in a hyperproliferative endometrial epithelium. In addition, melatonergic system deficiency also increased the local immunoinflammatory reaction with elevated local proinflammatory cytokines leading to early abortion in the Mt2 KO mice compared to the WT mice. We believe that the novel data obtained from the mice might apply to other animals including humans. Further investigation into the interaction between the melatonergic system and reproductive effects in different species would be worthwhile.
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Affiliation(s)
- Xiao Ma
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Scienceand Technology, China Agricultural University, Beijing 100193, China
| | - Jing Wang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Scienceand Technology, China Agricultural University, Beijing 100193, China
| | - Likai Wang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Scienceand Technology, China Agricultural University, Beijing 100193, China
| | - Laiqing Yan
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Scienceand Technology, China Agricultural University, Beijing 100193, China
| | - Yunjie Liu
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Scienceand Technology, China Agricultural University, Beijing 100193, China
| | - Wenkui Ma
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Scienceand Technology, China Agricultural University, Beijing 100193, China
| | - Pengyun Ji
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Scienceand Technology, China Agricultural University, Beijing 100193, China
| | - Lu Zhang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Scienceand Technology, China Agricultural University, Beijing 100193, China
| | - Guoshi Liu
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agricultural, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Scienceand Technology, China Agricultural University, Beijing 100193, China
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Zhang P, Yang B, Xu X, Zhang H, Feng X, Hao H, Du W, Zhu H, Li S, Yu W, Khan A, Umer S, Zhao X. Combination of CNP, MT and FLI during IVM Significantly Improved the Quality and Development Abilities of Bovine Oocytes and IVF-Derived Embryos. Antioxidants (Basel) 2023; 12:antiox12040897. [PMID: 37107273 PMCID: PMC10135536 DOI: 10.3390/antiox12040897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 04/04/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
Oocyte maturation is a critical step in the completion of female gametogenesis in the ovary; thus, for subsequent fertilization and embryogenesis. Vitrification of embryo also has been shown to be closely associated with oocyte maturation. To improve the quality and developmental potential of bovine oocytes derived from in vitro maturation (IVM), Pre-IVM with C-type natriuretic peptide (CNP), melatonin (MT) and in combination, IGF1, FGF2, LIF (FLI) were supplemented in the IVM medium. In this current study, we cultured bovine oocytes in Pre-IVM with CNP for 6 h before transferring them to the IVM medium supplemented with MT and FLI. The developmental potential of bovine oocytes was then investigated by measuring the reactive oxygen species (ROS), the intracellular glutathione (GSH) and ATP levels, the transzonal projections (TZP), the mitochondrial membrane potential (ΔΨm), cacline-AM, and the expression of related genes (cumulus cells (CCs), oocytes, blastocysts). The results revealed that oocytes treated with a combination of CNP, MT, and FLI had dramatically improved the percentage of oocytes developed to blastocyst, ATP content, GSH levels, TZP intensity, the ΔΨm, cacline-AM fluorescence intensity, and considerably reduced ROS levels of oocytes. Furthermore, the survival rate and the hatched rate after vitrification of the CNP+MT+FLI group were significantly higher than those other groups. Thus, we speculated that CNP+MT+FLI increases the IVM of bovine oocytes. In conclusion, our findings deepen our understanding and provide new perspectives on targeting the combination of CNP, MT and FLI to enhance the quality and developmental potential of bovine oocytes.
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Affiliation(s)
- Peipei Zhang
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Baigao Yang
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Xi Xu
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Hang Zhang
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Xiaoyi Feng
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Haisheng Hao
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Weihua Du
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Huabin Zhu
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
| | - Shujing Li
- Shijiazhuang Tianquan Elite Dairy Ltd., Shijiazhuang 050200, China
| | - Wenli Yu
- Shijiazhuang Tianquan Elite Dairy Ltd., Shijiazhuang 050200, China
| | - Adnan Khan
- Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Saqib Umer
- Department of Theriogenology, University of Agriculture, Faisalabad 38000, Punjab, Pakistan
| | - Xueming Zhao
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, China
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Vigolo V, Gautier C, Falomo ME, Aurich C. Selection of frozen-thawed stallion semen by microfluidic technology. Reprod Domest Anim 2023; 58:443-449. [PMID: 36510754 DOI: 10.1111/rda.14305] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/07/2022] [Accepted: 11/23/2022] [Indexed: 12/15/2022]
Abstract
The use of microfluidic technology is increasing in artificial reproduction technologies: With a small amount of semen, it allows for the selection of sperm with the best characteristics of kinetics, morphology and chromatin integrity. The ZyMot Multi (850 μl) is the most popular device of ZyMot Fertility Inc. To date, it was proven to be a valid instrument for sperm selection for in vitro fertilization and intracytoplasmic sperm injection in men. The aim of this study was to test the efficacy of the ZyMot Multi (850 μl) for stallion semen. Frozen-thawed semen from 15 stallions that were previously classified as being of 'good fertility' (GF; n = 8; pregnancy rate ≥ 40%) and 'poor fertility' (PF; n = 7; pregnancy rate < 20%), respectively, was used. Each ejaculate was assessed before and after microfluid recovery for kinetics (CASA), membrane integrity (MI) (SYBR14/PI), membrane functionality (MF) (HOS test), acrosome integrity (Spermac Stain Kit), morphology (Spermac stain kit), mitochondrial membrane potential (MMP) (JC-1) and chromatin integrity (aniline blue staining). Sperm concentration was reduced after sperm recovery in both groups, but more markedly in frozen-thawed semen of PF stallions (p < .05). Microfluid recovery increased total motility, MI, MF and MMP. While there was a significant increase in the percentage of progressively motile sperm after sperm microfluid recovery, there was a decrease in DAP, DSL, VAP, VSL, LIN, WOB and ALH (p < .05). A slight increase (p < .05) was detected in beat-cross frequency. The present results suggest that the ZyMot Multi (850 μl) device selects a specific sperm population from any stallion ejaculate with motile sperm and could therefore be a valid tool for in vitro testing with the aim to predict the fertility of frozen-thawed stallion semen.
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Affiliation(s)
- Veronica Vigolo
- Department for Small Animals and Horses, Artificial Insemination and Embryo Transfer, Vetmeduni Vienna, Vienna, Austria.,Department of Animal Medicine, Production and Health (MAPS), Università di Padova, Legnaro (PD), Italy
| | - Camille Gautier
- Department for Small Animals and Horses, Artificial Insemination and Embryo Transfer, Vetmeduni Vienna, Vienna, Austria
| | - Maria Elena Falomo
- Department of Animal Medicine, Production and Health (MAPS), Università di Padova, Legnaro (PD), Italy
| | - Christine Aurich
- Department for Small Animals and Horses, Artificial Insemination and Embryo Transfer, Vetmeduni Vienna, Vienna, Austria
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Ruiz-Díaz S, Mazzarella R, Navarrete-López P, Fernández-González R, de Frutos C, Maroto M, Cucala C, Beltrán-Breña P, Lombó M, Rizos D, Gutiérrez-Adán A. Bull spermatozoa selected by thermotaxis exhibit high DNA integrity, specific head morphometry, and improve ICSI outcome. J Anim Sci Biotechnol 2023; 14:11. [PMID: 36627704 PMCID: PMC9832681 DOI: 10.1186/s40104-022-00810-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 11/24/2022] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Sperm migration by thermotaxis is a guidance mechanism that operates along the oviduct and it has proved to be a valid method for selecting spermatozoa with low DNA fragmentation (SDF) in mice, humans, and stallions. This study aimed to analyse if bull spermatozoa could be selected by thermotaxis and to assess their quality in terms of SDF as well as determine the presence of a specific sperm subpopulation based on sperm morphometry and assess their fertilizing capacity by ICSI. METHODS We used frozen-thawed sperm from 6 bulls and sperm selection by thermotaxis was performed with TALP medium supplemented with 25 mmol/L of HEPES and 5 mmol/L of caffeine. In these conditions, sperm selection was achieved, obtaining a net thermotaxis of 3.6%. Subsequently, we analysed the SDF of the migrated and not-migrated spermatozoa using the neutral COMET assay, and we evaluated the size of the sperm head using Hemacolor® staining with Motic Images Plus 3 software. Additionally, migrated and not-migrated spermatozoa by thermotaxis were used to fertilize bovine in vitro matured (IVM) oocytes by ICSI, a very inefficient procedure in cattle that is only successful when the oocyte is artificially activated. RESULTS The results showed lower SDF (χ², P < 0.001, 13.3% reduction, n = 8) and lower head size parameters (length and width, P < 0.01; and perimeter and area, P < 0.001; n = 4) in those spermatozoa migrated in comparison to those not-migrated. The distribution of sperm subpopulations structure varied between groups, highlighting cluster 2, characterized by spermatozoa with small head size, and high ellipticity and elongated heads, as the most abundant in the thermotaxis migrated group. When performed ICSI (without oocyte artificial activation) with the thermotactic sperm, the blastocyst rate was 32.2% ± 9.3% in the group microinjected with the thermotactic spermatozoa vs. 8.3% ± 7.8% in the group of not-migrated sperm (χ², P < 0.05). CONCLUSION Our results showed that bull sperm selection by thermotaxis has a much higher DNA integrity, small and elongated head size parameters, and different sperm subpopulation structure than the not-selected spermatozoa. Additionally, we evidenced that thermotactic spermatozoa improve ICSI success rates.
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Affiliation(s)
- Sara Ruiz-Díaz
- Department of Animal Reproduction, INIA-CSIC, 28040, Madrid, Spain
- Mistral Fertility Clinics S.L, Clínica Tambre, Calle Tambre, 8, 28002, Madrid, Spain
| | | | | | | | - Celia de Frutos
- Department of Animal Reproduction, INIA-CSIC, 28040, Madrid, Spain
| | - María Maroto
- Department of Animal Reproduction, INIA-CSIC, 28040, Madrid, Spain
| | - Claudia Cucala
- Department of Animal Reproduction, INIA-CSIC, 28040, Madrid, Spain
| | | | - Marta Lombó
- Department of Animal Reproduction, INIA-CSIC, 28040, Madrid, Spain
| | - Dimitrios Rizos
- Department of Animal Reproduction, INIA-CSIC, 28040, Madrid, Spain
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Yang B, Hao T, Yang S, Hao H, Du W, Zhu H, Zhang P, Zhao X. Study on the expression patterns and function of JUNO and CD9 in bovine oocytes during in vitro maturation. Reprod Domest Anim 2023; 58:81-88. [PMID: 36107170 DOI: 10.1111/rda.14262] [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: 02/27/2022] [Revised: 08/16/2022] [Accepted: 09/14/2022] [Indexed: 01/13/2023]
Abstract
Fertilization proteins JUNO and CD9 play vital roles in sperm-egg fusion, but little is known about their expression patterns during in vitro maturation (IVM) and their function during in vitro fertilization (IVF) of bovine oocytes. In this study, qRT-PCR and immunofluorescence staining were used to detect the mRNA and protein expression levels of JUNO and CD9 genes in bovine oocytes and cumulus cells. Then, fertilization rate of MII oocytes treated with (i) JUNO antibody (1, 5 and 25 μg/ml) or (ii) CD9 antibody (1, 5 and 25 μg/ml) or (iii) CD9 antibody (5 μg/ml) + JUNO antibody (5 μg/ml) were recorded. Our results showed that the mRNA and protein expression levels of JUNO and CD9 genes significantly increased from bovine GV oocytes to MII oocytes, and similar mRNA expression patterns of JUNO and CD9 were also detected in cumulus cells. All groups of oocytes treated with CD9 antibody or JUNO antibody showed significantly decreased fertilization rates (p < .05). Particularly, the fertilization ability of oocytes treated with CD9 antibody (5 μg/ml) + JUNO antibody (5 μg/ml) sharply decreased to 3.48 ± 0.11%. In conclusion, our study revealed the expression levels of JUNO and CD9 genes in oocytes and cumulus cells increased during IVM of bovine oocytes, with JUNO protein playing a major role in the fertilization of bovine oocytes.
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Affiliation(s)
- Baigao Yang
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Tong Hao
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Sha Yang
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Haisheng Hao
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Weihua Du
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Huabin Zhu
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Peipei Zhang
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Xueming Zhao
- Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
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Time-lapse imaging and developmental competence of donkey eggs after ICSI: Effect of preovulatory follicular fluid during oocyte in vitro maturation. Theriogenology 2023; 195:199-208. [DOI: 10.1016/j.theriogenology.2022.10.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/18/2022] [Accepted: 10/24/2022] [Indexed: 11/09/2022]
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9
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Cabeza JP, Cámera J, Briski O, Felipe MY, Salamone DF, Gambini A. Preimplantation Developmental Competence of Bovine and Porcine Oocytes Activated by Zinc Chelation. Animals (Basel) 2022; 12:ani12243560. [PMID: 36552480 PMCID: PMC9774810 DOI: 10.3390/ani12243560] [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: 11/23/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
After sperm-oocyte fusion, intracytoplasmic rises of calcium (Ca) induce the release of zinc (Zn) out of the oocyte (Zn sparks). Both phenomena are known to play an essential role in the oocyte activation process. Our work aimed to explore different protocols for activating bovine and porcine oocytes using the novel zinc chelator 1,10-phenanthroline (PHEN) and to compare developmental rates and quality to bovine IVF and parthenogenetic ionomycin-induced embryos in both species. Different incubation conditions for the zinc chelator were tested, including its combination with ionomycin. Embryo quality was assessed by immunofluorescence of SOX2, SOX17, OCT4, and CDX2 and total cell number at the blastocyst stage. Even though blastocyst development was achieved using a zinc chelator in bovine, bypassing calcium oscillations, developmental rates, and blastocyst quality were compromised compared to embryos generated with sperm-induced or ionomycin calcium rise. On the contrary, zinc chelation is sufficient to trigger oocyte activation in porcine. Additionally, we determined the optimal exposure to PHEN for this species. Zinc chelation and artificial induction of calcium rise combined did not improve developmental competence. Our results contribute to understanding the role of zinc during oocyte activation and preimplantation embryo development across different mammalian species.
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Affiliation(s)
- Juan P. Cabeza
- Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Buenos Aires C1417DSE, Argentina
| | - Juan Cámera
- Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Buenos Aires C1417DSE, Argentina
| | - Olinda Briski
- Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Buenos Aires C1417DSE, Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Investigaciones en Producción Animal (INPA), Ciudad Autónoma de Buenos Aires, Buenos Aires C1417DSE, Argentina
| | - Minerva Yauri Felipe
- Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Buenos Aires C1417DSE, Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Investigaciones en Producción Animal (INPA), Ciudad Autónoma de Buenos Aires, Buenos Aires C1417DSE, Argentina
| | - Daniel F. Salamone
- Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Buenos Aires C1417DSE, Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Investigaciones en Producción Animal (INPA), Ciudad Autónoma de Buenos Aires, Buenos Aires C1417DSE, Argentina
| | - Andrés Gambini
- Facultad de Agronomía, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Buenos Aires C1417DSE, Argentina
- School of Agriculture and Food Sciences, The University of Queensland, Gatton, QLD 4343, Australia
- Correspondence:
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