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Taru M, Katoh T, Koshimizu K, Kuribayashi S, Miura R, Hamano S, Shirasuna K. Inflammatory uterine microenvironment in long-term infertility repeat breeder cows compared with normal fertile cows. Vet Anim Sci 2024; 25:100369. [PMID: 38984268 PMCID: PMC11231747 DOI: 10.1016/j.vas.2024.100369] [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] [Indexed: 07/11/2024] Open
Abstract
The reproductive performance of lactating dairy cows is gradually declining, and one of the causes of this problem is the presence of long-term infertility repeat breeder cows (RBCs). The causes of RBCs are largely thought to be maternal factors, including the uterine environment. This study aimed to accurately investigate the uterine environment of RBCs using uterine tissue and fluid. Next, we investigated the effect of nobiletin in bovine endometrial epithelial cells to explore the possibility of improving the uterine environment of RBCs. Uterine fluid was collected by flushing the uterus and endometrial tissues were collected by biopsy on day 7 of the estrous cycle from both normal fertile cows and RBCs (n = 5 in each group). A comprehensive analysis of the uterus revealed that gene expression and altered pathways differed between normal fertile cows and RBCs. Especially, pathways of natural killer cell-mediated cytotoxicity, cell cycle, and calcium signaling pathway were picked up in the uterine tissues of RBCs. In the uterine fluid, the levels of lipopolysaccharide were higher in the RBC than in normal group (P = 0.08). In in vitro experiment, treatment with the uterine fluid from RBCs upregulated inflammation-related pathways and molecules such as interleukin-8 (IL-8) in bovine endometrial epithelial cells. The treatment with nobiletin suppressed IL-8 induced by the treatment with uterine fluid. In conclusion, the uterine environment of RBCs was found to be in inflammatory condition, causing the lower reproductive performance. It is necessary to develop methods to improve to the anti-inflammatory state in the uterine environment of RBCs.
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Affiliation(s)
- Maho Taru
- Department of Animal Science, Tokyo University of Agriculture, Kanagawa 243-0034, Japan
| | - Taiga Katoh
- Department of Animal Science, Tokyo University of Agriculture, Kanagawa 243-0034, Japan
| | - Karen Koshimizu
- Department of Animal Science, Tokyo University of Agriculture, Kanagawa 243-0034, Japan
| | - Sohei Kuribayashi
- Department of Animal Science, Tokyo University of Agriculture, Kanagawa 243-0034, Japan
| | - Ryotaro Miura
- Department of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo 180-8602, Japan
| | - Seizo Hamano
- Artificial Insemination Association of Japan, Tokyo 135-0041, Japan
| | - Koumei Shirasuna
- Department of Animal Science, Tokyo University of Agriculture, Kanagawa 243-0034, Japan
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Cajas YN, Cañón-Beltrán K, Mazzarella R, Nuñez-Puente C, González EM, Rodriguez-Martinez H, Rizos D, Martinez-Serrano CA. Nobiletin as a novel agent to enhance porcine in vitro embryo development and quality. Theriogenology 2024; 223:36-46. [PMID: 38669840 DOI: 10.1016/j.theriogenology.2024.04.011] [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: 02/09/2024] [Revised: 03/25/2024] [Accepted: 04/21/2024] [Indexed: 04/28/2024]
Abstract
In vitro embryo production (IVP) is of great importance to the porcine industry, as well as for basic research and biomedical applications. Despite the large efforts made in laboratories worldwide to address suboptimal culture conditions, porcine IVP remains inefficient. Nobiletin (Nob, 5,6,7,8,3',4' hexamethoxyflavone) supplementation to in vitro culture (IVC) medium, enhances in vitro embryo development in various species. However, its impact on the quality and developmental capacity of in vitro-produced pig embryos is yet to be established. This study evaluated the effects of different concentrations (2.5 and 5 μM) of Nob during the early culture of in vitro-produced pig embryos on embryo developmental competence, mitochondrial activity, lipid content, intracellular Reactive Oxygen Species (ROS) and Glutathione (GSH) content, Total Cell Number (TCN) per blastocyst, and expression of genes related to embryo development, quality and oxidative stress. Embryos cultured in medium without Nob supplementation and in medium supplemented with 0.01 % dimethyl sulfoxide (DMSO-vehicle for Nob) constituted the Control and DMSO groups, respectively. Embryo development rates were evaluated on Days 2, 6 and 7 of IVC. Additionally, a representative group of embryos was selected to assess mitochondrial activity, lipid, ROS and GSH content (on Days 2 and 6 of IVC), TCN assessment and gene expression analyses (on Day 6 of IVC). No significant differences were observed in any of the parameters evaluated on Day 2 of IVC. In contrast, embryos cultured under the presence of Nob 2.5 showed higher developmental rates on Days 6 and 7 of IVC. In addition, Day 6 embryos showed increased mitochondrial activity, with decreased levels of ROS and GSH in the Nob 2.5 group compared to the other groups. Both Nob 2.5 and Nob 5 embryos showed higher TCN compared to the Control and DMSO groups. Furthermore, Nob 2.5 and Nob 5 upregulated the expression of Superoxide dismutase type 1 (SOD1) and Glucose-6-phosphate dehydrogenase (G6PDH) genes, which could help to counteract oxidative stress during IVC. In conclusion, the addition of Nob during the first 48 h of IVC increased porcine embryo development rates and enhanced their quality, including the upregulation of relevant genes that potentially improved the overall efficiency of the IVP system.
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Affiliation(s)
- Yulia N Cajas
- Department of Agrarian Production, Technical University of Madrid (UPM), 28040, Madrid, Spain; Department of Biological Science, Technical University of Loja (UTPL), 1101608, Loja, Ecuador.
| | - Karina Cañón-Beltrán
- Department of Biochemistry and Molecular Biology, Veterinary Faculty, Complutense University of Madrid (UCM), 28040, Madrid, Spain.
| | - Rosane Mazzarella
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA-CSIC), Avda. Puerta de Hierro, 28040, Madrid, Spain.
| | - Carolina Nuñez-Puente
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA-CSIC), Avda. Puerta de Hierro, 28040, Madrid, Spain.
| | - Encina M González
- Department of Anatomy and Embryology, Veterinary Faculty, Complutense University of Madrid (UCM), 28040, Madrid, Spain.
| | - Heriberto Rodriguez-Martinez
- Department of Biomedical & Clinical Sciences (BKV), BKH/Obstetrics & Gynaecology, Faculty of Medicine and Health Sciences, Linköping University, SE-58185, Linköping, Sweden.
| | - Dimitrios Rizos
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA-CSIC), Avda. Puerta de Hierro, 28040, Madrid, Spain.
| | - Cristina A Martinez-Serrano
- Department of Biotechnology, National Institute for Agriculture and Food Research and Technology (INIA-CSIC), Cta de La Coruña Km 7,5, 28040, Madrid, Spain.
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Aoki S, Inoue Y, Hamazaki M, Hara S, Noguchi T, Shirasuna K, Iwata H. miRNAs in Follicular and Oviductal Fluids Support Global DNA Demethylation in Early-Stage Embryos. Int J Mol Sci 2024; 25:5872. [PMID: 38892059 PMCID: PMC11172648 DOI: 10.3390/ijms25115872] [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: 04/15/2024] [Revised: 05/13/2024] [Accepted: 05/18/2024] [Indexed: 06/21/2024] Open
Abstract
Global methylation levels differ in in vitro- and in vivo-developed embryos. Follicular fluid (FF) contains extracellular vesicles (EVs) containing miRNAs that affect embryonic development. Here, we examined our hypothesis that components in FF affect global DNA methylation and embryonic development. Oocytes and FF were collected from bovine ovaries. Treatment of zygotes with a low concentration of FF induced global DNA demethylation, improved embryonic development, and reduced DNMT1/3A levels. We show that embryos take up EVs containing labeled miRNA secreted from granulosa cells and the treatment of zygotes with EVs derived from FF reduces global DNA methylation in embryos. Furthermore, the methylation levels of in vitro-developed blastocysts were higher than those of in their vivo counterparts. Based on small RNA-sequencing and in silico analysis, we predicted miR-29b, -199a-3p, and -148a to target DNMTs and to induce DNA demethylation, thereby improving embryonic development. Moreover, among FF from 30 cows, FF with a high content of these miRNAs demethylated more DNA in the embryos than FF with a lower miRNA content. Thus, miRNAs in FF play a role in early embryonic development.
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Affiliation(s)
| | | | | | | | | | | | - Hisataka Iwata
- Department of Animal Science, Graduate School of Agriculture, Tokyo University of Agriculture, Funako 1737, Atsugi 243-0034, Kanagawa, Japan; (S.A.)
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Travaglione A, Candela A, De Gregorio V, Genovese V, Cimmino M, Barbato V, Talevi R, Gualtieri R. Individually Cultured Bovine Zygotes Successfully Develop to the Blastocyst Stage in an Extremely Confined Environment. Cells 2024; 13:868. [PMID: 38786090 PMCID: PMC11119105 DOI: 10.3390/cells13100868] [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: 04/30/2024] [Revised: 05/16/2024] [Accepted: 05/17/2024] [Indexed: 05/25/2024] Open
Abstract
The possibility of detecting the developmental competence of individually cultured embryos through analysis of spent media is a major current trend in an ART setting. However, individual embryo culture is detrimental compared with high-density group culture due to the reduced concentration of putative embryotropins. The main aim of this study was to identify an individual culture system that is not detrimental over high-density group culture in the bovine model. Blastocyst rates and competence were investigated in a conventional (GC) group, semi-confined group (MG), and individual culture (MS) in a commercial microwell device. Main findings showed that: (1) individual embryos can be continuously cultured for 7 days in ~70 nL microwells (MS) without detrimental effects compared with the GC and MG; (2) MS and MG blastocysts had a reduced number of TUNEL-positive cells compared to GC blastocysts; (3) though blastocyst mean cell numbers, mitochondrial activity, and lipid content were not different among the three culture conditions, MS blastocysts had a higher frequency of small-sized lipid droplets and a reduced mean droplet diameter compared with GC and MG blastocysts. Overall, findings open the way to optimize the development and competence of single embryos in an ART setting.
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Affiliation(s)
| | | | | | | | | | | | | | - Roberto Gualtieri
- Department of Biology, University of Naples “Federico II”, Complesso Universitario Di Monte S. Angelo, Via Cinthia, 80126 Naples, Italy; (A.T.); (A.C.); (V.D.G.); (V.G.); (M.C.); (V.B.); (R.T.)
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Cañón-Beltrán K, Cajas YN, Almpanis V, Egido SG, Gutierrez-Adan A, González EM, Rizos D. MicroRNA-148b secreted by bovine oviductal extracellular vesicles enhance embryo quality through BPM/TGF-beta pathway. Biol Res 2024; 57:11. [PMID: 38520036 PMCID: PMC10960404 DOI: 10.1186/s40659-024-00488-z] [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: 10/30/2023] [Accepted: 02/29/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND Extracellular vesicles (EVs) and their cargoes, including MicroRNAs (miRNAs) play a crucial role in cell-to-cell communication. We previously demonstrated the upregulation of bta-mir-148b in EVs from oviductal fluid of cyclic cows. This miRNA is linked to the TGF-β pathway in the cell proliferation. Our aim was to verify whether miR-148b is taken up by embryos through gymnosis, validate its target genes, and investigate the effect of miR-148b supplementation on early embryo development and quality. METHODS Zygotes were cultured in SOF + 0.3% BSA (Control) or supplemented with: 1 µM miR-148b mimics during: D1-D7 (miR148b) or D1-D4 (miR148b-OV: representing miRNA effect in the oviduct) or D4-D7 (miR148b-UT: representing miRNA effect in the uterus) or 1 µM control mimics was used during: D1-D7 (CMimic). Embryos at ≥ 16-cells and D7 blastocysts (BD7) were collected to examine the mRNA abundance of transcripts linked to the TGF-β pathway (TGFBR2, SMAD1, SMAD2, SMAD3, SMAD5, BMPR2, RPS6KB1, POU5F1, NANOG), total cell number (TC), trophectoderm (TE), and inner cell mass (ICM) were also evaluated. One-way ANOVA was used for all analyses. RESULTS We demonstrated that miR-148b can be taken up in both 16-cell embryos and BD7 by gymnosis, and we observed a decrease in SMAD5 mRNA, suggesting it's a potential target of miR-148b. Cleavage and blastocysts rates were not affected in any groups; however, supplementation of miR-148b mimics had a positive effect on TC, TE and ICM, with values of 136.4 ± 1.6, 92.5 ± 0.9, 43.9 ± 1.3 for miR148b and 135.3 ± 1.5, 92.6 ± 1.2, 42.7 ± 0.8, for miR148b-OV group. Furthermore, mRNA transcripts of SMAD1 and SMAD5 were decreased (P ≤ 0.001) in 16-cell embryos and BD7 from miR148b and miR148b-OV groups, while POU5F1 and NANOG were upregulated (P ≤ 0.001) in BD7 and TGFBR2 was only downregulated in 16-cell embryos. pSMAD1/5 levels were higher in the miR148b and miR148b-OV groups. CONCLUSIONS Our findings suggest that supplementation of bta-miR-148b mimics during the entire culture period (D1 - D7) or from D1 - D4 improves embryo quality and influences the TGF-β signaling pathway by altering the transcription of genes associated with cellular differentiation and proliferation. This highlights the importance of miR-148b on embryo quality and development.
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Affiliation(s)
- Karina Cañón-Beltrán
- Department of Biochemistry and Molecular Biology, Veterinary Faculty, Complutense University of Madrid (UCM), Madrid, Spain
- Programa de Medicina Veterinaria y Zootecnia, Corporación Universitaria del Huila (CORHUILA), Grupo Kyron, Huila, Colombia
| | - Yulia N Cajas
- Department Agrarian Production, Technical University of Madrid (UPM), Madrid, Spain
- Departamento de Ciencias Biológicas, Universidad Técnica Particular de Loja (UTPL), Loja, Ecuador
| | - Vasileios Almpanis
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (CSIC-INIA), Madrid, Spain
| | - Sandra Guisado Egido
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (CSIC-INIA), Madrid, Spain
| | - Alfonso Gutierrez-Adan
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (CSIC-INIA), Madrid, Spain
| | - Encina M González
- Department of Anatomy and Embryology, Veterinary Faculty, Complutense University of Madrid (UCM), Madrid, Spain.
| | - Dimitrios Rizos
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (CSIC-INIA), Madrid, Spain.
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Almubarak A, Lee S, Yu IJ, Jeon Y. Effects of Nobiletin supplementation on the freezing diluent on porcine sperm cryo-survival and subsequent in vitro embryo development. Theriogenology 2024; 214:314-322. [PMID: 37956580 DOI: 10.1016/j.theriogenology.2023.11.006] [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: 04/28/2023] [Revised: 10/29/2023] [Accepted: 11/05/2023] [Indexed: 11/15/2023]
Abstract
Nobiletin (NOB) is a bioflavonoid compound isolated from citrus fruit peels. The present study aimed to elucidate whether NOB facilitates the porcine sperm cryosurvival and embryo development after in vitro fertilization (IVF). To this end, spermatozoa were diluted and cryopreserved in a freezing extender supplemented with 0 (control), 50, 100, 150, and 200 μM Nobiletin. The kinematic patterns of frozen-thawed (FT) sperm were assessed after 30 and 90 min incubation using a Sperm Class Analyzer (SCA). Viability, acrosome integrity, and mitochondrial membrane potential (MMP) were measured by fluorescence microscopy 30 min after thawing using SYBR-14/PI, PSA/FITC, and R123/PI, respectively. Lipid peroxidation was determined using MDA assay after incubation for 90 min. The addition of 100 μM and 150 μM NOB to the extender significantly improved sperm progressive motility, and acrosome integrity compared to the control group (P < 0.05). The proportion of viable spermatozoa was significantly higher in the 150 μM NOB group. MDA levels were less in 50 μM and 150 μM NOB treated groups compared to the control. In addition, IVF with FT sperm was used to assess the embryo developmental competence. Treatment with 150 μM NOB before cryopreservation increased the cleavage and blastocyst formation rates compared to the control group. Furthermore, the relative expression of POU5F1 and AMPK, genes related to pluripotency and cell differentiation were significantly upregulated in embryos resulting from NOB-treated sperm compared to the control group. These results suggest that Nobiletin is a functionally novel phytochemical to mitigate oxidative stress during the freezing-thawing of porcine spermatozoa as reflected by improved FT sperm quality and IVF outcome.
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Affiliation(s)
- Areeg Almubarak
- Department of Theriogenology and Reproductive Biotechnology, College of Veterinary Medicine and Bio-safety Research Institute, Jeonbuk National University, Iksan, 54596, South Korea; Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, Sudan University of Science and Technology, P.O. Box 204, Hilat Kuku, Khartoum North, 11111, Sudan
| | - Sanghoon Lee
- Laboratory of Theriogenology, College of Veterinary Medicine, Chungnam National University, Daejeon, 9 34134, South Korea
| | - Il-Jeoung Yu
- Department of Theriogenology and Reproductive Biotechnology, College of Veterinary Medicine and Bio-safety Research Institute, Jeonbuk National University, Iksan, 54596, South Korea
| | - Yubyeol Jeon
- Department of Theriogenology and Reproductive Biotechnology, College of Veterinary Medicine and Bio-safety Research Institute, Jeonbuk National University, Iksan, 54596, South Korea.
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Sánchez‐Ajofrín I, Peris‐Frau P, García‐Álvarez O, Fernández‐Santos MDR, Montoro V, Garde JJ, Soler AJ. Serum supplementation during in vitro fertilization of sheep oocytes influences blastocyst quality through the differential abundance of mRNA transcripts. Reprod Domest Anim 2022; 57 Suppl 5:68-71. [PMID: 35575960 PMCID: PMC9796288 DOI: 10.1111/rda.14161] [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: 03/21/2022] [Revised: 04/30/2022] [Accepted: 05/14/2022] [Indexed: 01/01/2023]
Abstract
Incubation with estrous sheep serum (ESS) is required to induce in vitro capacitation of spermatozoa during in vitro fertilization of small ruminants. However, the effect of adding different serum concentrations in the fertilization media on the quality of resulting blastocysts has not yet been studied. Here, 298 sheep oocytes were co-incubated with capacitated spermatozoa with either 10% or 2% ESS. There were no differences between treatments in cleavage (10% ESS: 63.81 ± 5.87% and 2% ESS: 45.31 ± 5.87%) and blastocyst rates (10% ESS: 20.83 ± 2.12% and 2% ESS: 15.93 ± 2.12%). Nonetheless, in vitro-produced blastocysts from the 10% ESS treatment showed a higher transcript abundance of mRNAs involved in apoptosis (ITM2B and BCL2), antioxidant defence (GPX1) and growth-related imprinting (IGF2R). Our data suggest that ESS supplementation during in vitro fertilization can influence the quality of sheep embryos at later stages of development by increasing the transcription of developmentally important genes.
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Affiliation(s)
- Irene Sánchez‐Ajofrín
- Instituto Regional de Investigación Científica Aplicada (IRICA)UCLMCiudad RealSpain,SaBio IREC (CSIC‐UCLM‐JCCM)ETSIAMAlbaceteSpain
| | - Patricia Peris‐Frau
- SaBio IREC (CSIC‐UCLM‐JCCM)ETSIAMAlbaceteSpain,Department Animal Reproduction (INIA‐CSIC)MadridSpain
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Aoki S, Inoue Y, Shinozawa A, Tanaka K, Shirasuna K, Iwata H. miR-17-5p in bovine oviductal fluid affects embryo development. Mol Cell Endocrinol 2022; 551:111651. [PMID: 35452772 DOI: 10.1016/j.mce.2022.111651] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/03/2022] [Accepted: 04/16/2022] [Indexed: 11/22/2022]
Abstract
This study identified microRNAs (miRNAs) in bovine oviductal fluids (OFs) and examined the effect of miR-17-5p in OFs on embryonic development to the blastocyst stage. Small RNA-seq of extracellular vesicles of OFs revealed 242 miRNAs. Additionally, analyzing expressions of randomly selected OF-miRNAs with RT-qPCR in the culture medium of oviductal epithelial cells indicated that the abundance of miRNAs in OFs increased during the luteal phase. miR-17-5p mimic-treated eight-cell-stage zona pellucida-free embryos showed improved embryonic development to the blastocyst stage. The effect of the miR-17-5p mimic was confirmed using a dual-luciferase assay and immunostaining. In addition, RNA-seq of the miR-17-5p mimic- or control-treated embryos revealed differentially expressed genes (DEGs), suggesting possible pathways that overlapped with the in silico-predicted pathways for miR-17-5p targeting genes. Furthermore, ingenuity pathway analysis of DEG predicted miR-17 to be a significant upstream regulator. Our results suggest that miR-17-5p in OFs regulates embryonic development in bovines.
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Affiliation(s)
- Sogo Aoki
- Department of Animal Science, Graduate School of Agriculture, Tokyo University of Agriculture, Funako, 1737, Atsugi City, Kanagawa, Japan
| | - Yuki Inoue
- Department of Animal Science, Graduate School of Agriculture, Tokyo University of Agriculture, Funako, 1737, Atsugi City, Kanagawa, Japan
| | - Akihisa Shinozawa
- NODAI Genome Research Center, Tokyo University of Agriculture, Sakuragaoka 1-1-1, Setagaya, Tokyo, Japan
| | - Keisuke Tanaka
- NODAI Genome Research Center, Tokyo University of Agriculture, Sakuragaoka 1-1-1, Setagaya, Tokyo, Japan
| | - Koumei Shirasuna
- Department of Animal Science, Graduate School of Agriculture, Tokyo University of Agriculture, Funako, 1737, Atsugi City, Kanagawa, Japan
| | - Hisataka Iwata
- Department of Animal Science, Graduate School of Agriculture, Tokyo University of Agriculture, Funako, 1737, Atsugi City, Kanagawa, Japan.
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Cajas YN, Cañón-Beltrán K, Núñez-Puente C, Gutierrez-Adán A, González EM, Agirregoitia E, Rizos D. Nobiletin-induced partial abrogation of deleterious effects of AKT inhibition on preimplantation bovine embryo development in vitro. Biol Reprod 2021; 105:1427-1442. [PMID: 34617564 DOI: 10.1093/biolre/ioab184] [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: 05/06/2021] [Revised: 08/20/2021] [Accepted: 09/23/2021] [Indexed: 11/14/2022] Open
Abstract
During preimplantational embryo development, PI3K/AKT regulates cell proliferation and differentiation and nobiletin modulates this pathway to promote cell survival. Therefore, we aimed to establish whether, when the AKT cascade is inhibited using inhibitors III and IV, nobiletin supplementation to in vitro culture media during the minor (2 to 8-cell stage, MNEGA) or major (8 to 16-cell stage, MJEGA) phases of EGA is able to modulate the development and quality of bovine embryos. In vitro zygotes were cultured during MNEGA or MJEGA phase in SOF + 5% FCS or supplemented with: 15 μM AKT-InhIII; 10 μM AKT-InhIV; 10 μM nobiletin; nobiletin+AKT-InhIII; nobiletin+AKT-InhIV; 0.03% DMSO. Embryo development was lower in treatments with AKT inhibitors, while combination of nobiletin with AKT inhibitors was able to recover their adverse developmental effect and also increase blastocyst cell number. The mRNA abundance of GPX1, NFE2L2, and POU5F1 was partially increased in 8- and 16-cell embryos from nobiletin with AKT inhibitors. Besides, nobiletin increased the p-rpS6 level whether or not AKT inhibitors were present. In conclusion, nobiletin promotes bovine embryo development and quality and partially recovers the adverse developmental effect of AKT inhibitors which infers that nobiletin probably uses another signalling cascade that PI3K/AKT during early embryo development in bovine.
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Affiliation(s)
- Yulia N Cajas
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), 28040, Madrid, Spain
| | - Karina Cañón-Beltrán
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), 28040, Madrid, Spain
| | - Carolina Núñez-Puente
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), 28040, Madrid, Spain
| | - Alfonso Gutierrez-Adán
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), 28040, Madrid, Spain
| | - Encina M González
- Department of Anatomy and Embryology, Veterinary Faculty, Complutense University of Madrid (UCM), 28040, Madrid, Spain
| | - Ekaitz Agirregoitia
- Department of Physiology, Faculty of Medicine and Nursing, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), 48940 Leioa, Bizkaia, Spain
| | - Dimitrios Rizos
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), 28040, Madrid, Spain
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