1
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Guo X, Jiao L, Yi Y, Zhang HL, Liu YX, Wang ZY, Sun SC. NAMPT regulates mitochondria function and lipid metabolism during porcine oocyte maturation. J Cell Physiol 2024; 239:180-192. [PMID: 37992208 DOI: 10.1002/jcp.31156] [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: 09/21/2023] [Revised: 10/27/2023] [Accepted: 11/02/2023] [Indexed: 11/24/2023]
Abstract
Oocyte maturation defect can lead to maternal reproduction disorder. NAMPT is a rate-limiting enzyme in mammalian NAD+ biosynthesis pathway, which can regulate a variety of cellular metabolic processes including glucose metabolism and DNA damage repair. However, the function of NAMPT in porcine oocytes remains unknown. In this study, we showed that NAMPT involved into multiple cellular events during oocyte maturation. NAMPT expressed during all stages of porcine oocyte meiosis, and inhibition of NAMPT activity caused the cumulus expansion and polar body extrusion defects. Mitochondrial dysfunction was observed in NAMPT-deficient porcine oocytes, which showed decreased membrane potential, ATP and mitochondrial DNA content, increased oxidative stress level and apoptosis. We also found that NAMPT was essential for spindle organization and chromosome arrangement based on Ac-tubulin. Moreover, lack of NAMPT activity caused the increase of lipid droplet and affected the imbalance of lipogenesis and lipolysis. In conclusion, our study indicated that lack of NAMPT activity affected porcine oocyte maturation through its effects on mitochondria function, spindle assembly and lipid metabolism.
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Affiliation(s)
- Xin Guo
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Le Jiao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yang Yi
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Hao-Lin Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Ya-Xi Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Zi-Yu Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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2
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Kim E, Ra K, Lee MS, Kim GA. Porcine Follicular Fluid-Derived Exosome: The Pivotal Material for Porcine Oocyte Maturation in Lipid Antioxidant Activity. Int J Mol Sci 2023; 24:9807. [PMID: 37372955 DOI: 10.3390/ijms24129807] [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: 04/04/2023] [Revised: 05/23/2023] [Accepted: 05/31/2023] [Indexed: 06/29/2023] Open
Abstract
Several studies have examined exosomes derived from porcine follicular fluid (FF), but few have reported their application in controlled experiments. The main concern in the field of embryology may be that controlled conditions, such as using a defined medium intermittently, cause poor results in mammalian oocyte maturation and embryo development. The first reason is the absence of the FF, which copes with the majority of the processes emerging in oocytes and embryos. Therefore, we added exosomes derived from porcine FF to the maturation medium of porcine oocytes. For morphological assessment, cumulus cell expansion and subsequent embryonic development were evaluated. Moreover, several stainings, such as glutathione (GSH) and reactive oxygen species (ROS), fatty acid, ATP, and mitochondrial activity, as well as evaluations of gene expression and protein analysis, were used for the functional verification of exosomes. When the oocytes were treated with exosomes, the lipid metabolism and cell survival of the oocytes were fully recovered, as well as morphological evaluations compared to the porcine FF-excluded defined medium. Therefore, controlled experiments may produce reliable data if the exosomes are treated with the desired amounts, and we suggest applying FF-derived exosomes to promote experimental data when performing controlled experiments in embryology.
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Affiliation(s)
- Euihyun Kim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Kihae Ra
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Myung-Shin Lee
- Department of Microbiology and Immunology, School of Medicine, Eulji University, Daejeon 35233, Republic of Korea
| | - Geon A Kim
- Department of Biomedical Laboratory Science, School of Healthcare Science, Eulji University, Uijeongbu 34824, Republic of Korea
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3
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Fang T, Wu ZW, Wang Y, Wang F, Du ZQ, Yang CX. Comparative transcriptome analysis identifies important maternal molecules and associated biological pathways for pig and human mature oocytes. Reprod Domest Anim 2022; 57:643-652. [PMID: 35244301 DOI: 10.1111/rda.14105] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/28/2022] [Indexed: 12/17/2022]
Abstract
Recent researches reveal that during oocyte maturation, species-specific molecular profile exists, and has important functional roles. However, molecular differences between pig (a larger animal model for human reproduction) and human mature oocytes remain unknown. Here, by comparative transcriptome analyses of single cell RNA-seq data, we aimed to identify the common and unique maternal factors and associated biological processes between in vivo and in vitro matured pig oocytes, and between in vitro matured human and pig oocytes. Annotated protein coding mRNAs were identified in pig in vivo (11147) and in vitro (11997), and human in vitro (14491) MII oocytes, respectively. For in vivo and in vitro derived pig MII oocytes, 10551 annotated maternal mRNAs were common, mainly enriched in signaling pathways such as cell cycle, oocyte meiosis, microtubule cytoskeleton, MAPK, RNA processing/binding. Besides, in vivo (596) and in vitro (1446) pig MII-specific mRNAs and their involved signaling pathways (in vivo: Bmp, calcium-mediated signaling, PI3K-Akt; in vitro: growth factor activity, JAK-STAT, cytokine-cytokine receptor interaction, calcium signaling pathway) were also found. As for in vitro derived human and pig MII oocytes, 10285 annotated mRNAs were common, enriched in a variety of signaling pathways (cell cycle, oocyte meiosis, microtubule, AMPK, RNA splicing, protein serine/threonine kinase activity, etc). In vitro MII-specific mRNAs were found for humans (4206) and pigs (1712), which were also enriched in species-specific signaling pathways (humans: golgi related terms, transcription repressor and hormone activity; pigs: ATP biosynthetic process, G protein-coupled peptide receptor activity, animoacyl-tRNA biosynthesis), respectively. These findings improve our understanding on oocyte maturation, and also the limitations of pig model for human oocyte maturation and fertilization.
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Affiliation(s)
- Ting Fang
- College of Animal Science, Yangtze University, JingZhou, 434025, Hubei, China
| | - Zi-Wei Wu
- College of Animal Science, Yangtze University, JingZhou, 434025, Hubei, China
| | - Yi Wang
- College of Animal Science, Yangtze University, JingZhou, 434025, Hubei, China
| | - Fang Wang
- College of Animal Science, Yangtze University, JingZhou, 434025, Hubei, China
| | - Zhi-Qiang Du
- College of Animal Science, Yangtze University, JingZhou, 434025, Hubei, China
| | - Cai-Xia Yang
- College of Animal Science, Yangtze University, JingZhou, 434025, Hubei, China
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4
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Pollard CL, Gibb Z, Hawdon A, Swegen A, Grupen CG. Supplementing media with NAD + precursors enhances the in vitro maturation of porcine oocytes. J Reprod Dev 2021; 67:319-326. [PMID: 34408103 PMCID: PMC8568614 DOI: 10.1262/jrd.2021-080] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
In vitro maturation (IVM) is an important reproductive technology used to produce embryos in vitro. However, the developmental potential of oocytes sourced
for IVM is markedly lower than those matured in vivo. Previously, NAD+-elevating treatments have improved oocyte quality and embryo development in cattle and
mice, suggesting that NAD+ is important during oocyte maturation. The aim of this study was to examine the effects of nicotinic acid (NA), nicotinamide (NAM) and nicotinamide
mononucleotide (NMN) on oocyte maturation and subsequent embryo development. Porcine oocytes from small antral follicles were matured for 44 h in a defined maturation medium supplemented
with NA, NAM and resveratrol or NMN. Mature oocytes were artificially activated and presumptive zygotes cultured for 7 days. Additionally, oocytes were matured without treatment then
cultured for 7 days with NMN. Supplementing the IVM medium with NA improved maturation and blastocyst formation while NAM supplementation improved cleavage rates compared with untreated
controls. Supplementing the IVM or embryo culture media with NMN had no effect on maturation or embryo development. The results show that supplementing the maturation medium with NA and NAM
improved maturation and developmental potential of porcine oocytes.
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Affiliation(s)
- Charley-Lea Pollard
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, NSW 2570, Australia
| | - Zamira Gibb
- Priority Research Centre for Reproductive Science, University of Newcastle, NSW 2308, Australia
| | - Azelle Hawdon
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, NSW 2570, Australia.,Present: Australian Regenerative Medicine Institute, Faculty of Medicine, Nursing and Health Sciences, Monash University, VIC 3800, Australia
| | - Aleona Swegen
- Priority Research Centre for Reproductive Science, University of Newcastle, NSW 2308, Australia.,Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK
| | - Christopher G Grupen
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, NSW 2570, Australia
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Chen PR, Redel BK, Kerns KC, Spate LD, Prather RS. Challenges and Considerations during In Vitro Production of Porcine Embryos. Cells 2021; 10:cells10102770. [PMID: 34685749 PMCID: PMC8535139 DOI: 10.3390/cells10102770] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/12/2021] [Accepted: 10/13/2021] [Indexed: 02/02/2023] Open
Abstract
Genetically modified pigs have become valuable tools for generating advances in animal agriculture and human medicine. Importantly, in vitro production and manipulation of embryos is an essential step in the process of creating porcine models. As the in vitro environment is still suboptimal, it is imperative to examine the porcine embryo culture system from several angles to identify methods for improvement. Understanding metabolic characteristics of porcine embryos and considering comparisons with other mammalian species is useful for optimizing culture media formulations. Furthermore, stressors arising from the environment and maternal or paternal factors must be taken into consideration to produce healthy embryos in vitro. In this review, we progress stepwise through in vitro oocyte maturation, fertilization, and embryo culture in pigs to assess the status of current culture systems and address points where improvements can be made.
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Affiliation(s)
- Paula R. Chen
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA
| | | | - Karl C. Kerns
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | - Lee D. Spate
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA
- National Swine Resource and Research Center, University of Missouri, Columbia, MO 65211, USA
| | - Randall S. Prather
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211, USA
- National Swine Resource and Research Center, University of Missouri, Columbia, MO 65211, USA
- Correspondence:
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6
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Zhu T, Guan S, Lv D, Zhao M, Yan L, Shi L, Ji P, Zhang L, Liu G. Melatonin Modulates Lipid Metabolism in Porcine Cumulus-Oocyte Complex via Its Receptors. Front Cell Dev Biol 2021; 9:648209. [PMID: 33869202 PMCID: PMC8047119 DOI: 10.3389/fcell.2021.648209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 02/18/2021] [Indexed: 12/13/2022] Open
Abstract
Lipid is a crucial energy resource for mammalian oocyte. Melatonin could benefit the maturation of porcine oocyte in vitro, but the related mechanism is not elucidated yet. In the current study, methods to monitor lipid metabolism in single live oocytes were firstly established using probes (Lipi-Blue and Lipi-Green). It was observed that both lipid biogenesis and lipolysis occurred in maturing oocyte, but the general level of lipids dropped. Then maturing oocytes stained with probes were treated with melatonin or lipid metabolic-related inhibitors (triacsin C, rotenone, or etomoxir). The results showed that the lipid metabolism and maturation of porcine oocytes were all disrupted and that melatonin rescued the oocytes treated with triacsin C or rotenone, but not those treated with etomoxir. Further investigation demonstrated that cumulus cells are able to transfer lipids to oocytes via gap junctions. It was also observed that melatonin receptors exist in cumulus cells and are required for oocytes to maintain lipid metabolism. Meanwhile, the global gene expressing in cumulus cells was also modulated by melatonin, especially the genes related to antioxidants (SOD1, GPX1, GPX3, GPX4, PRDX2, and PRDX5), lipid metabolism (FABP3, FABP5, ACACB, TECR, etc.), and mitochondrial respiration (GPD1, ETFB, CYC1, and the genes of ATP synthase). Altogether the current research demonstrates that melatonin modulates lipid metabolism in maturing oocytes through its receptors in cumulus cells and benefits the developmental competence of oocytes.
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Affiliation(s)
- Tianqi Zhu
- Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics Improvement, Ministry of Agriculture, Beijing, China.,College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shengyu Guan
- Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics Improvement, Ministry of Agriculture, Beijing, China.,College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Dongying Lv
- Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics Improvement, Ministry of Agriculture, Beijing, China.,College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Mengmeng Zhao
- Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics Improvement, Ministry of Agriculture, Beijing, China.,College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Laiqing Yan
- Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics Improvement, Ministry of Agriculture, Beijing, China.,College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Li Shi
- Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics Improvement, Ministry of Agriculture, Beijing, China.,College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Pengyun Ji
- Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics Improvement, Ministry of Agriculture, Beijing, China.,College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Lu Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics Improvement, Ministry of Agriculture, Beijing, China.,College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Guoshi Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics Improvement, Ministry of Agriculture, Beijing, China.,College of Animal Science and Technology, China Agricultural University, Beijing, China
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7
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Kim EH, Kim GA, Taweechaipaisankul A, Ridlo MR, Lee SH, Ra K, Ahn C, Lee BC. Phytanic acid-derived peroxisomal lipid metabolism in porcine oocytes. Theriogenology 2020; 157:276-285. [PMID: 32823023 DOI: 10.1016/j.theriogenology.2020.07.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 07/03/2020] [Accepted: 07/07/2020] [Indexed: 12/15/2022]
Abstract
Lipid metabolism plays an important role in oocyte maturation. The peroxisome is the fundamental mediator for this mechanism. In this study, we investigated the peroxisomal lipid metabolism in porcine oocytes. Phytanic acid (PA) was chosen as an activator of alpha-oxidation in peroxisomes. Oocyte maturation, embryo development, immunocytochemistry of peroxisomal lipid activities, and staining of mitochondrial potentials were assessed. We found that 40 μM PA not only increased porcine oocyte maturation and embryonic development, but also upregulated the expression of genes and proteins related to activities of the peroxisomal lipid metabolism (PHYH, PEX19, and PEX subfamilies) and mitochondrial potentials (NRF1 and PGC1α). Moreover, PA upregulated the lipid droplet and fatty acid content in the oocytes. Moreover, mitochondria were activated and the mitochondrial membrane potential was increased after PA treatment, resulting in the production of more ATPs in the oocytes. Our findings suggest that the degradation of PA via alpha-oxidation in the peroxisome may potentiate oocyte maturation processes, peroxisomal lipid oxidation, and mitochondria activities.
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Affiliation(s)
- Eui Hyun Kim
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Geon A Kim
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea; Department of Biomedical Laboratory Science, School of Medicine, Eulji University, Daejeon, Republic of Korea
| | - Anukul Taweechaipaisankul
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Muhammad Rosyid Ridlo
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea; Department of Bioresource Technology and Veterinary, Vocational College, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Seok Hee Lee
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Kihae Ra
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Curie Ahn
- Division of Nephrology, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Byeong Chun Lee
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea.
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8
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Wen J, Wang GL, Yuan HJ, Zhang J, Xie HL, Gong S, Han X, Tan JH. Effects of glucose metabolism pathways on nuclear and cytoplasmic maturation of pig oocytes. Sci Rep 2020; 10:2782. [PMID: 32066834 PMCID: PMC7026050 DOI: 10.1038/s41598-020-59709-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 02/03/2020] [Indexed: 12/11/2022] Open
Abstract
The developmental competence of IVM porcine oocytes is still low compared with that in their in vivo counterparts. Although many studies reported effects of glucose metabolism (GM) on oocyte nuclear maturation, few reported on cytoplasmic maturation. Previous studies could not differentiate whether GM of cumulus cells (CCs) or that of cumulus-denuded oocytes (DOs) supported oocyte maturation. Furthermore, species differences in oocyte GM are largely unknown. Our aim was to address these issues by using enzyme activity inhibitors, RNAi gene silencing and special media that could support nuclear but not cytoplasmic maturation when GM was inhibited. The results showed that GM in CCs promoted pig oocyte maturation by releasing metabolites from both pentose phosphate pathway and glycolysis. Both pyruvate and lactate were transferred into pig DOs by monocarboxylate transporter and pyruvate was further delivered into mitochondria by mitochondrial pyruvate carrier in both pig DOs and CCs. In both pig DOs and CCs, pyruvate and lactate were utilized through mitochondrial electron transport and LDH-catalyzed oxidation to pyruvate, respectively. Pig and mouse DOs differed in their CC dependency for glucose, pyruvate and lactate utilization. While mouse DOs could not, pig DOs could use the lactate-derived pyruvate.
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Affiliation(s)
- Jing Wen
- College of Life Science, Northeast Agricultural University, Harbin, 150030, P.R. China
| | - Guo-Liang Wang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P.R. China
| | - Hong-Jie Yuan
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P.R. China
| | - Jie Zhang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P.R. China
| | - Hong-Li Xie
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P.R. China
| | - Shuai Gong
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P.R. China
| | - Xiao Han
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P.R. China
| | - Jing-He Tan
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an City, 271018, P.R. China. .,College of Life Science, Northeast Agricultural University, Harbin, 150030, P.R. China.
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9
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Zhuan Q, Ma H, Chen J, Luo Y, Luo Y, Gao L, Hou Y, Zhu S, Fu X. Cytoplasm lipids can be modulated through hormone-sensitive lipase and are related to mitochondrial function in porcine IVM oocytes. Reprod Fertil Dev 2020; 32:667-675. [DOI: 10.1071/rd19047] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 11/14/2019] [Indexed: 12/16/2022] Open
Abstract
Intracellular lipids provide energy for oocyte maturation and development. Triglycerides are the main components of cytoplasm lipid droplets, and hydrolysis of triglycerides requires several lipase-mediated steps. The aim of this study was to determine the effects of the β-adrenoceptor agonist isoproterenol (ISO) and the hormone-sensitive lipase (HSL) inhibitor CAY10499 on the IVM of porcine oocytes. ISO (5mg L−1) and CAY10499 (20mg L−1) had positive and negative effects respectively on invitro oocyte maturation and subsequent embryo development. The rates of polar body extrusion, cleavage and blastocyst formation were significantly higher in the ISO-treated group than the control and CAY10499-treated groups. ISO treatment also upregulated intracellular cAMP levels in comparison with the control group, while CAY10499 significantly increased the triglyceride content of matured oocytes when compared with other groups, consistent with the observed decrease in LIPE (HSL) mRNA levels. Furthermore, the inhibitory effects of CAY10499 included decreases in mitochondrial membrane potential and mitochondrial temperature. These results indicate that ISO has a positive effect on the IVM of porcine oocytes, and that intracellular lipid metabolism can be modulated by CAY10499 through inhibition of HSL and is closely related to mitochondrial function.
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10
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Yang K, Wang N, Guo HT, Wang JR, Sun HH, Sun LZ, Yue SL, Zhou JB. Effect of L-carnitine on sperm quality during liquid storage of boar semen. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2019; 33:1763-1769. [PMID: 32054191 PMCID: PMC7649068 DOI: 10.5713/ajas.19.0455] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 11/12/2019] [Indexed: 12/18/2022]
Abstract
Objective This study was conducted to investigate the effect of L-carnitine on the pig semen characteristics during storage. Methods Spermatozoa samples were examined for spermatozoa quality and then randomly divided into 5 groups: 0 (control), 12.5, 25, 50, and 100 mM L-carnitine. Sperm motility, plasma membrane integrity and antioxidant parameters (total reactive oxygen species, total antioxidant capacity, and malondialdehyde) were evaluated after 0, 3, 5, and 10 day cooled-storage at 17°C. Moreover, ATP content, mitochondria activity as well as sperm-binding and in vitro fertilizing ability of preserved boar sperm were also investigated. Results Supplementation with 50 mM L-carnitine could effectively maintain boar sperm quality parameters such as sperm motility and membrane integrity. Besides, we found that L-carnitine had positive effects on boar sperm quality mainly through improving antioxidant capacities and enhancing ATP content and mitochondria activity. Interestingly, by assessing the effect of L-carnitine on sperm fertility and developmental potential, we discovered that the extender containing L-carnitine could improve sperm quality and increase the number of sperms bounding to zona pellucida, without improving in vitro fertility and development potential. Conclusion These findings suggested that the proper addition of L-carnitine to the semen extender improved boar sperm quality during liquid storage at 17°C.
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Affiliation(s)
- Kang Yang
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China
| | - Na Wang
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China
| | - Hai-Tao Guo
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China
| | - Jing-Ran Wang
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China
| | - Huan-Huan Sun
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China
| | - Liang-Zhen Sun
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China
| | - Shun-Li Yue
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China.,Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China
| | - Jia-Bo Zhou
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China.,Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China
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