1
|
Konstantogianni O, Panou T, Zikopoulos A, Skentou C, Stavros S, Asimakopoulos B. Culture of Human Embryos at High and Low Oxygen Levels. J Clin Med 2024; 13:2222. [PMID: 38673495 PMCID: PMC11050882 DOI: 10.3390/jcm13082222] [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: 02/09/2024] [Revised: 03/22/2024] [Accepted: 04/07/2024] [Indexed: 04/28/2024] Open
Abstract
One of the parameters potentially affecting the in vitro growth of preimplantation embryos is the oxygen concentration in the culture environment. An increased oxygen concentration causes the generation of ROS which in turn can cause damage to the cells and seriously disrupt the embryonic development. Previous studies have assessed oxygen concentrations in the fallopian tubes of several mammals of between 5 and 8%, while the oxygen levels in the uterus were found to be even lower; similar measurements have been confirmed in humans. In addition, studies in mammalian embryos showed that low oxygen concentrations improve embryo development. Multiple studies on the effect of the oxygen concentration on human embryos have been conducted so far with diverse methodologies and objectives. Data from these have been included in three meta-analyses. All meta-analyses indicate the potential benefit in favor of a low oxygen concentration, though data are considered to be of a low methodological quality and further studies are considered necessary. However, based on the existing evidence, it is suggested that a low oxygen concentration should be adopted in the routine of the IVF laboratory, especially in the case of blastocyst culture.
Collapse
Affiliation(s)
- Ourania Konstantogianni
- Laboratory of Reproductive Physiology-IVF, Faculty of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece (T.P.)
| | - Theodoros Panou
- Laboratory of Reproductive Physiology-IVF, Faculty of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece (T.P.)
| | | | - Charikleia Skentou
- Department of Obstetrics and Gynecology, Medical School of Ioannina, University General Hospital, 45110 Ioannina, Greece
| | - Sofoklis Stavros
- Third Department of Obstetrics and Gynecology, Attikon Hospital, Medical School, National and Kapodistrian University of Athens, 12462 Athens, Greece
| | - Byron Asimakopoulos
- Laboratory of Reproductive Physiology-IVF, Faculty of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece (T.P.)
| |
Collapse
|
2
|
Zhang R, Pan Y, Wang M, Wang J, Zhang T, Zhao L, Xu R, Wang Y, Han X, Ye X, Cui Y, Yu S. CIRBP Increases the synthesis and secretion of steroid hormones by in yak granulaso cells. J Steroid Biochem Mol Biol 2024; 238:106449. [PMID: 38143009 DOI: 10.1016/j.jsbmb.2023.106449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/27/2023] [Accepted: 12/20/2023] [Indexed: 12/26/2023]
Abstract
As a regulatory protein that upregulates transcription in response to various stresses, cold-induced RNA-binding protein (CIRBP) is involved in a variety of physiological pathological processes in cells. However, little is known about the role of CIRBP in regulating autophagy and the synthesis and secretion of ovarian steroid hormones (estradiol E2 and progesterone P4). This study aimed to explore whether the synthetic secretion of ovarian steroid hormones is related to CIRBP-regulated autophagy. We detected the differential expression of CIRBP, LC3, E2 and P4 in YGCs cultured at mild low temperature (32 °C) for 6 and 12 h. CIRBP, LC3, E2 and P4 expression was increased in response to low temperature in YGCs. In order to illustrate that the changes in secretion of E2/P4 and autophagy might be caused by CIRBP induced by low temperature, we overexpressed CIRBP in YGCs cultured in vitro to detect its effects on autophagy and steroid hormone synthesis and secretion. We found that overexpression of CIRBP can induce autophagy of YGCs and enhance the synthesis and secretion of E2 and P4, suggesting that mild hypothermia may activate autophagy by inducing the expression of CIRBP and enhance the synthesis and secretion of E2 and P4. To further explore the relationship between CIRBP regulated autophagy and steroid hormone synthesis and secretion, we verified it by regulating autophagy. The results showed that Inhibition of autophagy significantly reversed CIRBP overexpression-enhanced autophagy and synthetic secretion of E2, P4 in YGCs, while activated autophagy showed similar results to overexpression of CIRBP. In conclusion, our data suggest that autophagy is involved in the synthesis and secretion of YGCs E2 and P4 and is associated with overexpression of CIRBP.
Collapse
Affiliation(s)
- Rui Zhang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Yangyang Pan
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Meng Wang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Jinglei Wang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Tongxiang Zhang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Ling Zhao
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Ruihua Xu
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Yaying Wang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Xiaohong Han
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Xiaolin Ye
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Yan Cui
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Sijiu Yu
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China.
| |
Collapse
|
3
|
Xiao-Hong H, Meng W, Yang-Yang P, Jiang-Feng F, Jing-Lei W, Ling Z, Ya-Ying W, Tong-Xiang Z, Tian Z, Tian-Yi D, Yan C, Si-Jiu Y. Effect of follicle-stimulating hormone and luteinizing hormone on apoptosis, autophagy, and the release and reception of some steroid hormones in yak granulosa cells through miR-23a/ASK1 axis. Cell Signal 2024; 115:111010. [PMID: 38128707 DOI: 10.1016/j.cellsig.2023.111010] [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: 11/14/2023] [Revised: 12/10/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023]
Abstract
Follicle-stimulating hormone (FSH), luteinizing hormone (LH), miR-23a, apoptosis signal-regulating kinase 1(ASK1)/c-Jun N-terminal kinase (JNK), autophagy and apoptosis play crucial roles in follicular development. However, their role in yak granulosa cells (GCs) remains unknown. Therefore, we examined the effect of miR-23a, ASK1, FSH, and LH on apoptosis, autophagy, and the release and reception of some steroid hormones in these cells. Our results showed that miR-23a overexpression significantly increased the abundance of Beclin1, the LC3II/I ratio, and the number of Ad-mRFP-GFP-LC3-labeled autophagosomes, and decreased p62 abundance. Additionally, Bax abundance and the number of terminal deoxynucleotidyl transferase deoxynucleotide triphosphate nick end labeling-positive cells were reduced, while Bcl2 expression was increased. Overexpression of miR-23a also significantly increased the abundance of estradiol receptor α (ER-α) and β (ER-β) and the concentrations of estradiol (E2), progesterone (P4) in yak GCs. Here, treating yak GCs with miR-23a decreased ASK1 expression, which regulates ASK1/JNK-mediated apoptosis, autophagy, E2 and P4 levels, and ER-α/β abundance. In contrast, treatment of yak GCs with FSH (10 μg/mL) and LH (100 μg/mL) increased miR-23a abundance, regulating the subsequent effect on ASK1/JNK-mediated apoptosis, autophagy, ER-α/β abundance, and E2 and P4 concentrations. In conclusion, miR-23a enhances autophagy in yak GCs, attenuates apoptosis, and increases ER-α/β abundance and E2 and P4 concentrations by downregulating ASK1. Additionally, FSH and LH can regulate these effects of miR-23a by altering its expression. These results provide important insights that can inform the development of strategies to reduce abnormal follicular atresia and improve the reproductive rate of yaks.
Collapse
Affiliation(s)
- Han Xiao-Hong
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China
| | - Wang Meng
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Pan Yang-Yang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China
| | - Fan Jiang-Feng
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China
| | - Wang Jing-Lei
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Zhao Ling
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Wang Ya-Ying
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Zhang Tong-Xiang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Zhao Tian
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Ding Tian-Yi
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Cui Yan
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China
| | - Yu Si-Jiu
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China.
| |
Collapse
|
4
|
Zeng W, Xiao D, Chen R, Lu Y, Liang W, Sun H. A novel method for gas mixing and distribution in multi-chamber embryo incubators. Technol Health Care 2024; 32:169-181. [PMID: 38759047 PMCID: PMC11191516 DOI: 10.3233/thc-248015] [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] [Indexed: 05/19/2024]
Abstract
BACKGROUND High-quality control of the gas environment in incubators is crucial for in vitro embryo development, which requires high accuracy, fast recovery, and low gas consumption. OBJECTIVE In this study, we propose a novel gas mixing and distribution system and method as an alternative solution for multi-chamber embryo incubators. METHODS The system-based embryo incubator enables a controllable gas circulation process and a quantitative supply of CO2 and N2. To determine the optimal parameters for the mixing time and flow rate of the circulated gases, we conducted contrast experiments on the system-based incubator. To evaluate the performance of the gas system in the incubator, we conducted tests under four different initial conditions, simulating various practical application scenarios. Furthermore, we performed a mouse embryo assay to assess the system's effectiveness. RESULTS The results show that the system achieved a gas concentration accuracy of ± 0.2% (volume fraction) after stabilization, a minimum recovery time of 5 minutes, an average consumption of 8.9 L/d for N2 and 0.83 L/d for CO2 during routine operation, and a blastocyst rate exceeding 90% observed after 96 hours of culture in the incubator. CONCLUSION The system and method demonstrate a significant advantage in terms of low gas consumption compared to existing incubators, while still maintaining high accuracy and fast recovery.
Collapse
Affiliation(s)
- Weijun Zeng
- School of Biomedical Engineering (Suzhou), University of Science and Technology of China, Hefei, Anhui, China
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu, China
| | - Donggen Xiao
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu, China
| | - Ruitao Chen
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu, China
| | - Yao Lu
- School of Biomedical Engineering (Suzhou), University of Science and Technology of China, Hefei, Anhui, China
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu, China
| | - Weiguo Liang
- School of Biomedical Engineering (Suzhou), University of Science and Technology of China, Hefei, Anhui, China
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu, China
| | - Haixuan Sun
- School of Biomedical Engineering (Suzhou), University of Science and Technology of China, Hefei, Anhui, China
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu, China
- Jinan Guokeyigong Science and Technology Development Company Ltd., Jinan, Shandong, China
| |
Collapse
|
5
|
Báez F, de Brun V, Rodríguez-Osorio N, Viñoles C. Low oxygen tension during in vitro embryo production improves the yield, quality, and cryotolerance of bovine blastocysts. Anim Sci J 2024; 95:e13941. [PMID: 38549361 DOI: 10.1111/asj.13941] [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: 11/01/2023] [Revised: 02/05/2024] [Accepted: 02/29/2024] [Indexed: 04/02/2024]
Abstract
Mammalian oocytes undergo maturation and fertilization in the low-oxygen (O2) environment of the oviduct. To evaluate the effect of O2 tension during in vitro maturation and fertilization on embryo yield, quality, cryotolerance, and gene expression, we matured and fertilized bovine cumulus-oocyte complexes under low (5%) or high (20%) O2 tension. Presumptive zygotes from both groups were cultured at 5% O2 for 8 days. Blastocysts were vitrified, and then warmed, and cultured for further 24 h to assess their cryotolerance. Our findings indicate that low O2 during maturation and fertilization enhances embryo development and cell count in both fresh and vitrified/warmed blastocysts. In this study, the interaction of O2 tension and status (fresh or vitrified/warmed) affected the transcript abundance of SOD2, AQP3, and BAX in blastocysts. These results highlight the role of low O2 tension during bovine maturation and fertilization and provide support to using 5% O2 throughout all stages of bovine in vitro embryo production.
Collapse
Affiliation(s)
- Francisco Báez
- Instituto Superior de la Carne, CENUR Noreste, Universidad de la República (UDELAR), Tacuarembó, Uruguay
| | - Victoria de Brun
- Laboratorio de Endocrinología y Metabolismo Animal, Facultad de Veterinaria, UDELAR, Montevideo, Uruguay
| | - Nélida Rodríguez-Osorio
- Unidad de Genómica y Bioinformática, Departamento de Ciencias Biológicas, CENUR Litoral Norte, UDELAR, Salto, Uruguay
| | - Carolina Viñoles
- Centro de Salud Reproductiva de Rumiantes en Sistemas Agroforestales, CENUR Noreste, UDELAR, Cerro Largo, Uruguay
| |
Collapse
|
6
|
Mo L, Ma J, Xiong Y, Xiong X, Lan D, Li J, Yin S. Factors Influencing the Maturation and Developmental Competence of Yak ( Bos grunniens) Oocytes In Vitro. Genes (Basel) 2023; 14:1882. [PMID: 37895231 PMCID: PMC10606142 DOI: 10.3390/genes14101882] [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: 08/14/2023] [Revised: 09/17/2023] [Accepted: 09/25/2023] [Indexed: 10/29/2023] Open
Abstract
The yak (Bos grunniens) is a unique breed living on the Qinghai-Tibet Plateau and its surrounding areas, providing locals with a variety of vital means of living and production. However, the yak has poor sexual maturity and low fertility. High-quality mature oocytes are the basis of animal breeding technology. Recently, in vitro culturing of oocytes and embryo engineering technology have been applied to yak breeding. However, compared to those observed in vivo, the maturation rate and developmental capacity of in vitro oocytes are still low, which severely limits the application of in vitro fertilization and embryo production in yaks. This review summarizes the endogenous and exogenous factors affecting the in vitro maturation (IVM) and developmental ability of yak oocytes reported in recent years and provides a theoretical basis for obtaining high-quality oocytes for in vitro fertilization and embryo production in yaks.
Collapse
Affiliation(s)
- Luoyu Mo
- College of Animal and Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China; (L.M.); (J.M.); (Y.X.); (X.X.); (D.L.); (J.L.)
| | - Jun Ma
- College of Animal and Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China; (L.M.); (J.M.); (Y.X.); (X.X.); (D.L.); (J.L.)
| | - Yan Xiong
- College of Animal and Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China; (L.M.); (J.M.); (Y.X.); (X.X.); (D.L.); (J.L.)
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization Key Laboratory of Sichuan Province, Chengdu 610041, China
- Key Laboratory of Animal Science of National Ethnic Affairs Commission of China, Southwest Minzu University, Chengdu 610041, China
| | - Xianrong Xiong
- College of Animal and Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China; (L.M.); (J.M.); (Y.X.); (X.X.); (D.L.); (J.L.)
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization Key Laboratory of Sichuan Province, Chengdu 610041, China
- Key Laboratory of Animal Science of National Ethnic Affairs Commission of China, Southwest Minzu University, Chengdu 610041, China
| | - Daoliang Lan
- College of Animal and Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China; (L.M.); (J.M.); (Y.X.); (X.X.); (D.L.); (J.L.)
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization Key Laboratory of Sichuan Province, Chengdu 610041, China
- Key Laboratory of Animal Science of National Ethnic Affairs Commission of China, Southwest Minzu University, Chengdu 610041, China
| | - Jian Li
- College of Animal and Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China; (L.M.); (J.M.); (Y.X.); (X.X.); (D.L.); (J.L.)
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization Key Laboratory of Sichuan Province, Chengdu 610041, China
- Key Laboratory of Animal Science of National Ethnic Affairs Commission of China, Southwest Minzu University, Chengdu 610041, China
| | - Shi Yin
- College of Animal and Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China; (L.M.); (J.M.); (Y.X.); (X.X.); (D.L.); (J.L.)
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education, Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization Key Laboratory of Sichuan Province, Chengdu 610041, China
- Key Laboratory of Animal Science of National Ethnic Affairs Commission of China, Southwest Minzu University, Chengdu 610041, China
| |
Collapse
|
7
|
Zhang J, Cui Y. Integrative analysis identifies potential ferroptosis-related genes of hypoxia adaptation in yak. Front Vet Sci 2022; 9:1022972. [PMID: 36304416 PMCID: PMC9592977 DOI: 10.3389/fvets.2022.1022972] [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: 08/19/2022] [Accepted: 09/13/2022] [Indexed: 11/04/2022] Open
Abstract
There are studies on the hypoxia adaptation in yak, but there are few studies on the regulation of ferroptosis by hypoxia. This study was the first time to explore ferroptosis-related genes about hypoxia in yak. In this study, the oviduct epithelial cells between yak and bovine are performed by integrative analysis for functions, regulating network and hub genes. The results showed 29 up-regulated ferroptosis genes and 67 down-regulated ferroptosis genes, and GO-KEGG analysis showed that up-regulated differentially expressed genes (DEGs) were significantly enriched in ribosome pathway and oxidative phosphorylation pathway. Down-regulated DEGs were significantly enriched in longevity regulating pathway-mammal pathway. Mitophagy-Animal Pathway was a significant enrichment pathway for the up-regulated differentially expressed ferroptosis genes (DE-FRGs). HIF-1 signaling pathway is a significant pathway for the down-regulated DE-FRGs. By constructing DE-FRGs protein-protein interaction (PPI) network, 10 hub DE-FRGs (Jun, STAT3, SP1, HIF1A, Mapk1, Mapk3, Rela, Ulk1, CDKN1A, EPAS1) were obtained. The bta-mir-21-5p, bta-mir-10a and bta-mir-17-5p related to STAT3 were predicted. The results of this study indicated the important genes and pathways of the hypoxia in yak, and it was the first time to study ferroptosis genes and pathways related to the hypoxia adaptation by bulk-seq in yak. This study provided sufficient transcriptome datas for hypoxia adaptation.
Collapse
Affiliation(s)
- Jian Zhang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China,Technology and Research Center of Gansu Province for Embryonic Engineering of Bovine and Sheep & Goat, Lanzhou, China
| | - Yan Cui
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China,Technology and Research Center of Gansu Province for Embryonic Engineering of Bovine and Sheep & Goat, Lanzhou, China,*Correspondence: Yan Cui
| |
Collapse
|
8
|
Zhao T, Pan Y, Li Q, Ding T, Niayale R, Zhang T, Wang J, Wang Y, Zhao L, Han X, Baloch AR, Cui Y, Yu S. Leukemia inhibitory factor enhances the development and subsequent blastocysts quality of yak oocytes in vitro. Front Vet Sci 2022; 9:997709. [PMID: 36213393 PMCID: PMC9533679 DOI: 10.3389/fvets.2022.997709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 08/22/2022] [Indexed: 11/25/2022] Open
Abstract
Leukemia inhibitory factor (LIF) is a multipotent cytokine of the IL-6 family which plays a critical role in the maturation and development of oocytes. This study evaluated the influence of LIF on the maturation and development ability of yak oocytes, and the quality of subsequent blastocysts under in vitro culture settings. Different concentrations of LIF (0, 25, 50, and 100 ng/mL) were added during the in vitro culture of oocytes to detect the maturation rate of oocytes, levels of mitochondria, reactive oxygen species (ROS), actin, and apoptosis in oocytes, mRNA transcription levels of apoptosis and antioxidant-related genes in oocytes, and total cell number and apoptosis levels in subsequent blastocysts. The findings revealed that 50 ng/mL LIF could significantly increase the maturation rate (p < 0.01), levels of mitochondria (p < 0.01) and actin (p < 0.01), and mRNA transcription levels of anti-apoptotic and antioxidant-related genes in yak oocytes. Also, 50 ng/mL LIF could significantly lower the generation of ROS (p < 0.01) and apoptosis levels of oocytes (p < 0.01). In addition, blastocysts formed from 50 ng/mL LIF-treated oocytes showed significantly larger total cell numbers (p < 0.01) and lower apoptosis rates (p < 0.01) than the control group. In conclusion, the addition of LIF during the in vitro maturation of yak oocytes improved the quality and the competence of maturation and development in oocytes, as well as the quality of subsequent blastocysts. The result of this study provided some insights into the role and function of LIF in vitro yak oocytes maturation, as well as provided fundamental knowledge for assisted reproductive technologies in the yak.
Collapse
Affiliation(s)
- Tian Zhao
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Yangyang Pan
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Qin Li
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Tianyi Ding
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Robert Niayale
- School of Veterinary Medicine, University for Development Studies, Tamale, Ghana
| | - Tongxiang Zhang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Jinglei Wang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Yaying Wang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Ling Zhao
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Xiaohong Han
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Abdul Rasheed Baloch
- Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Yan Cui
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
| | - Sijiu Yu
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Gansu Province Livestock Embryo Engineering Research Center, Lanzhou, China
- *Correspondence: Sijiu Yu
| |
Collapse
|
9
|
Li Q, Zhao T, He H, Robert N, Ding T, Hu X, Zhang T, Pan Y, Cui Y, Yu S. Ascorbic acid protects the toxic effects of aflatoxin B 1 on yak oocyte maturation. Anim Sci J 2022; 93:e13702. [PMID: 35257449 DOI: 10.1111/asj.13702] [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: 09/26/2021] [Revised: 01/26/2022] [Accepted: 02/03/2022] [Indexed: 11/29/2022]
Abstract
High-quality oocytes are a prerequisite for successful fertilization. Mammals feeding on aflatoxin-contaminated feed can cause reproductive toxicity, including follicular atresia, poor oocyte development and maturation, and aberrant epigenetic modifications of oocytes. In addition, the important role of ascorbic acid (AA) in reproductive biology has been confirmed, and AA is widely used as an antioxidant in cell culture. However, the toxic effects of aflatoxin B1 (AFB1 ) on yak oocytes and whether AA has protective effects remain unknown. In this study, we found that exposure to AFB1 impedes meiotic maturation of oocytes, promotes apoptosis by triggering high levels of reactive oxygen species (ROS), and disrupts mitochondrial distribution and actin integrity, resulting in a decrease in the fertilization ability and parthenogenetic development ability of oocytes. In addition, these injuries changed the DNA methylation transferase transcription level of mature oocytes. After adding 50 μg/ml AA, the indices recovered to levels close to those of the control group. The results showed that AA could protect yak oocytes from the toxic effects of AFB1 and improve the quality of oocytes.
Collapse
Affiliation(s)
- Qin Li
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Tian Zhao
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Honghong He
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Niayale Robert
- Laboratory of Animal Anatomy & Tissue Embryology, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Tianyi Ding
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Xuequan Hu
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Tongxiang Zhang
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Yangyang Pan
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Yan Cui
- Laboratory of Animal Anatomy & Tissue Embryology, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Sijiu Yu
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| |
Collapse
|
10
|
Chelenga M, Sakaguchi K, Kawano K, Furukawa E, Yanagawa Y, Katagiri S, Nagano M. Low oxygen environment and astaxanthin supplementation promote the developmental competence of bovine oocytes derived from early antral follicles during 8 days of in vitro growth in a gas-permeable culture device. Theriogenology 2022; 177:116-126. [PMID: 34695665 DOI: 10.1016/j.theriogenology.2021.10.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 10/12/2021] [Accepted: 10/16/2021] [Indexed: 10/20/2022]
Abstract
We evaluated the effects of a constant low (5-5%) and modulated (5-20%) oxygen environments on the in vitro development of bovine oocyte-cumulus-granulosa cell complexes (OCGCs) cultured in the presence or absence of an antioxidant (astaxanthin: Ax). OCGCs were cultured in a gas permeable culture device for 8 days in 5-5% O2 (±Ax) and 5-20% O2 (±Ax) culture conditions. In the oxygen modulated culture conditions, the oxygen concentration was switched from 5% to 20% on day 4 of culture. Ax promoted the viability of OCGCs (P < 0.05), but both oxygen and Ax had a significant effect on ROS production levels by OCGCs (P < 0.05). Specifically, ROS levels were significantly lower and higher under 5-5% O2 (+Ax) and 5-20% O2 (-Ax) conditions, respectively (P < 0.05), with intermediate levels observed in the 5-5% O2 (-Ax) and the 5-20% O2 (+Ax) culture conditions. The steroidogenic pattern was characterized by increasing estradiol-17β but with constant progesterone production levels regardless of culture conditions, suggesting the inhibition of luteinization-like changes in granulosa cells. OCGCs cultured in the 5-20% O2 (+Ax) had higher nuclear maturation rates (P < 0.05) that were similar to the oocytes grown in vivo. However, there was no clear difference in the subsequent cleavage rates among the 5-5% O2 (±Ax) and the 5-20% O2 (+Ax) culture conditions (P > 0.05). A constant low oxygen environment significantly promoted the blastocyst rates (P < 0.05); however, the presence of Ax in the 5-20% O2 (+Ax) condition also promoted development similar to the OCGCs cultured in the 5-5% O2 (-Ax) condition (P > 0.05). In conclusion, exposure of OCGCs to constant low oxygen or oxygen modulation in the presence of Ax promotes the healthy development of OCGCs during the 8-day IVG culture using the gas permeable culture device.
Collapse
Affiliation(s)
- Madalitso Chelenga
- Laboratory of Theriogenology, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan; Department of Clinical Studies, Faculty of Veterinary Medicine, Lilongwe University of Agriculture and Natural Resources, Malawi
| | - Kenichiro Sakaguchi
- Laboratory of Theriogenology, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | - Kohei Kawano
- Laboratory of Theriogenology, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | - Eri Furukawa
- Laboratory of Theriogenology, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | - Yojiro Yanagawa
- Laboratory of Theriogenology, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | - Seiji Katagiri
- Laboratory of Theriogenology, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | - Masashi Nagano
- Laboratory of Animal Reproduction, Department of Animal Science, School of Veterinary Medicine, Kitasato University, 35-1 Higashi-23, Towada, 034-8628, Japan.
| |
Collapse
|
11
|
He H, Zhang H, Pan Y, Zhang T, Yang S, Liu M, Robert N, Wang J, Zhao T, Zhao L, Fan J, Cui Y, Yu S. Low oxygen concentration improves yak oocyte maturation and inhibits apoptosis through HIF-1 and VEGF. Reprod Domest Anim 2021; 57:381-392. [PMID: 34967955 DOI: 10.1111/rda.14076] [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: 04/20/2021] [Accepted: 12/28/2021] [Indexed: 11/29/2022]
Abstract
The gas-phase environment of in vitro culture system plays an important role in the development of oocytes, and oxygen concentration is one of the important factors. In the present study, we aimed to explore the effect of different oxygen concentrations (20%, 10%, 5% or 1% O2 ) in yak oocyte maturation and to detect the expression of HIF-1α, VEGF and cell apoptosis in yak COCs. First, the maturation rate of oocytes, cleavage rate and blastocysts rate following parthenogenetic activation in the group with 5% oxygen concentration were significantly higher (p < 0.05) than the other groups. Then, TUNEL analysis showed that the 5% oxygen concentration group significantly inhibited apoptosis of cumulus-oocyte complexes (COCs) compared to the other group, and the transcription and protein levels of pro-apoptotic factor Bax, HIF-1α and VEGF in yak COCs significantly reduced, while anti-apoptotic factor Bcl-2 significantly increased. Furthermore, immunohistochemical staining results indicated that HIF-1α protein was mainly located in theca follicle interna, mural follicular stratum granulosum, corona radiata and ovarian stroma in the follicular ovarian tissue; while VEGF protein was mainly located in the granulosa and theca cell layers. In summary, our findings demonstrate that 5% oxygen concentration may promote maturation and inhibit apoptosis of oocytes through HIF-1α-mediated VEGF expression.
Collapse
Affiliation(s)
- Honghong He
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China.,College of Animal Husbandry and Verterinary Medicine, Southwest Minzu University, Chengdu, 610041, China
| | - Huizhu Zhang
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Yangyang Pan
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Tongxiang Zhang
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Shanshan Yang
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Minqing Liu
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Niayale Robert
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Jinglei Wang
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Tian Zhao
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Ling Zhao
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Jiangfeng Fan
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Yan Cui
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Sijiu Yu
- Gansu Province Livestock Embryo Engineering Research Center, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| |
Collapse
|
12
|
Ramos-Ibeas P, Gimeno I, Cañón-Beltrán K, Gutiérrez-Adán A, Rizos D, Gómez E. Senescence and Apoptosis During in vitro Embryo Development in a Bovine Model. Front Cell Dev Biol 2020; 8:619902. [PMID: 33392207 PMCID: PMC7775420 DOI: 10.3389/fcell.2020.619902] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/01/2020] [Indexed: 12/15/2022] Open
Abstract
According to the World Health Organization, infertility affects up to 14% of couples under reproductive age, leading to an exponential rise in the use of assisted reproduction as a route for conceiving a baby. In the same way, thousands of embryos are produced in cattle and other farm animals annually, leading to increased numbers of individuals born. All reproductive manipulations entail deviations of natural phenotypes and genotypes, with in vitro embryo technologies perhaps showing the biggest effects, although these alterations are still emerging. Most of these indications have been provided by animal models, in particular the bovine species, due to its similarities to human early embryo development. Oocytes and embryos are highly sensitive to environmental stress in vivo and in vitro. Thus, during in vitro culture, a number of stressful conditions affect embryonic quality and viability, inducing subfertility and/or long-term consequences that may reach the offspring. A high proportion of the embryos produced in vitro are arrested at a species-specific stage of development during the first cell divisions. These arrested embryos do not show signs of programmed cell death during early cleavage stages. Instead, defective in vitro produced embryos would enter a permanent cell cycle arrest compatible with cellular senescence, in which they show active metabolism and high reactive oxygen species levels. Later in development, mainly during the morula and blastocyst stages, apoptosis would mediate the elimination of certain cells, accomplishing both a physiological role in to balancing cell proliferation and death, and a pathological role preventing the transmission of damaged cells with an altered genome. The latter would acquire relevant importance in in vitro produced embryos that are submitted to stressful environmental stimuli. In this article, we review the mechanisms mediating apoptosis and senescence during early embryo development, with a focus on in vitro produced bovine embryos. Additionally, we shed light on the protective role of senescence and apoptosis to ensure that unhealthy cells and early embryos do not progress in development, avoiding long-term detrimental effects.
Collapse
Affiliation(s)
- Priscila Ramos-Ibeas
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), Madrid, Spain
| | - Isabel Gimeno
- Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Gijón, Spain
| | - Karina Cañón-Beltrán
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), Madrid, Spain
| | - Alfonso Gutiérrez-Adán
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), Madrid, Spain
| | - Dimitrios Rizos
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), Madrid, Spain
| | - Enrique Gómez
- Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Gijón, Spain
| |
Collapse
|