1
|
Kandil OM, Rahman SMAE, Ali RS, Ismail EA, Ibrahim NM. Effect of melatonin on developmental competence, mitochondrial distribution, and intensity of fresh and vitrified/thawed in vitro matured buffalo oocytes. Reprod Biol Endocrinol 2024; 22:39. [PMID: 38580962 PMCID: PMC10996257 DOI: 10.1186/s12958-024-01209-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 03/20/2024] [Indexed: 04/07/2024] Open
Abstract
BACKGROUND In livestock breeding, oocyte cryopreservation is crucial for preserving and transferring superior genetic traits. This study was conducted to examine the additional effect of melatonin to maturation and vitrification media on the in vitro developmental capacity, mitochondrial distribution, and intensity of buffalo oocytes. The study involved obtaining ovaries from a slaughterhouse and conducting two phases. In the first phase, high-quality oocytes were incubated in a maturation medium with or without 10-9M melatonin for 22 h (at 38.5°C in 5% CO2). Matured oocytes were fertilized in vitro and cultured in SOF media for seven days. In the second phase, vitrified in vitro matured oocytes were stored in vitrified media (basic media (BM) containing a combination of cryoprotectants (20% Ethyl Glycol and 20% Dimethyl sulfoxide), with or without melatonin, and then stored in liquid nitrogen. Normal vitrified/thawed oocytes were fertilized in vitro and cultured as described. Finally, the matured oocytes from the fresh and vitrified/thawed groups, both with and without melatonin, were stained using DAPI and Mitotracker red to detect their viability (nuclear maturation), mitochondrial intensity, and distribution using a confocal microscope. The study found that adding 10-9M melatonin to the maturation media significantly increased maturation (85.47%), fertilization rate (84.21%)cleavage (89.58%), and transferable embryo (48.83%) rates compared to the group without melatonin (69.85%,79.88%, 75.55%, and 37.25% respectively). Besides that, the addition of melatonin to the vitrification media improved the recovery rate of normal oocytes (83.75%), as well as the cleavage (61.80%) and transferable embryo (27.00%) rates when compared to the vitrified TCM group (67.46%, 51.40%, and 17.00%, respectively). The diffuse mitochondrial distribution was higher in fresh with melatonin (TCM + Mel) (80%) and vitrified with melatonin (VS2 + Mel groups) (76.70%), Furthermore, within the same group, while the mitochondrial intensity was higher in the TCM + Mel group (1698.60) than other group. In conclusion, Melatonin supplementation improves the developmental competence and mitochondrial distribution in buffalo oocytes in both cases(in vitro maturation and vitrification).
Collapse
Affiliation(s)
- Omaima Mohamed Kandil
- Department of Animal Reproduction & Artificial Insemination, Veterinary Research Institute, National Research Centre, Cairo, Egypt.
- Accredited (ISO 17025) Embryo and Genetic Resources Conservation Bank in National Research Centre (NRC), Cairo, Egypt.
| | | | - Rania S Ali
- Zoology and Entomology Department, Faculty of Science, Helwan University, Cairo, Egypt
| | - Esraa Aly Ismail
- Department of Animal Reproduction & Artificial Insemination, Veterinary Research Institute, National Research Centre, Cairo, Egypt
| | - Nehad M Ibrahim
- Zoology and Entomology Department, Faculty of Science, Helwan University, Cairo, Egypt
| |
Collapse
|
2
|
Pyeon DB, Lee SE, Yoon JW, Park HJ, Oh SH, Lee DG, Kim EY, Park SP. Comparison of the improving embryo development effects of Sasa quelpaertensis Nakai extract, p-coumaric acid, and myricetin on porcine oocytes according to their antioxidant capacities. Theriogenology 2022; 185:97-108. [DOI: 10.1016/j.theriogenology.2022.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 10/18/2022]
|
3
|
El-Sokary MMM, El-Naby ASAHH, El Hameed ARA, Mahmoud KGM, Scholkamy TH. Impact of L-carnitine supplementation on the in vitro developmental competence and cryotolerance of buffalo embryos. Vet World 2021; 14:3164-3169. [PMID: 35153408 PMCID: PMC8829399 DOI: 10.14202/vetworld.2021.3164-3169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 11/01/2021] [Indexed: 11/16/2022] Open
Abstract
Background and Aim: Despite many trials, buffalo embryos have poor cryosurvivability because of their high lipid content. L-carnitine was found to be a lipid-reducing agent when added to oocyte and embryo culture media. The study aimed to determine the most effective concentration of L-carnitine to improve the oocyte developmental competence and cryotolerance of buffalo embryos.
Materials and Methods: In vitro maturation and embryo culture media were supplemented with four concentrations of L-carnitine: 0 (control), 0.25, 0.5, and 1 mM. Good-quality embryos on 7 days were vitrified using mixtures of dimethyl sulfoxide and ethylene glycol at two concentrations (3.5 and 7 M).
Results: The result showed that the cleavage and morula rates were significantly (p<0.05) higher in the 0.5 mM group. Blastocyst rates were significantly (p<0.05) higher at both 0.5 and 1 mM. The rates of viable embryos directly after thawing were significantly (p<0.05) increased in the 0.5 mM group. No significant difference was found in embryos cultured for 24 h after warming among all the groups.
Conclusion: The addition of L-carnitine at a concentration of 0.5 mM to the culture media improves the oocyte developmental competence and cryotolerance of buffalo embryos directly after warming but not after 24 h of culture. Nevertheless, further studies must identify how L-carnitine exerts its beneficial micromechanisms.
Collapse
Affiliation(s)
| | | | - Amal R. Abd El Hameed
- Department of Animal Reproduction and A.I., Veterinary Research Division, National Research Centre, Dokki, Giza, Egypt
| | - Karima Gh. M. Mahmoud
- Department of Animal Reproduction and A.I., Veterinary Research Division, National Research Centre, Dokki, Giza, Egypt
| | - T. H. Scholkamy
- Department of Field Investigations, Animal Reproduction Research Institute, Agriculture Research Center, Giza, Egypt
| |
Collapse
|
4
|
Tharasanit T, Thuwanut P. Oocyte Cryopreservation in Domestic Animals and Humans: Principles, Techniques and Updated Outcomes. Animals (Basel) 2021; 11:ani11102949. [PMID: 34679970 PMCID: PMC8533007 DOI: 10.3390/ani11102949] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/05/2021] [Accepted: 10/06/2021] [Indexed: 12/25/2022] Open
Abstract
Oocyte cryopreservation plays important roles in basic research and the application of models for genetic preservation and in clinical situations. This technology provides long-term storage of gametes for genetic banking and subsequent use with other assisted reproductive technologies. Until recently, oocytes have remained the most difficult cell type to freeze, as the oocytes per se are large with limited surface area to cytoplasm ratio. They are also highly sensitive to damage during cryopreservation, and therefore the success rate of oocyte cryopreservation is generally poor when compared to noncryopreserved oocytes. Although advancement in oocyte cryopreservation has progressed rapidly for decades, the improvement of cryosurvival and clinical outcomes is still required. This review focuses on the principles, techniques, outcomes and prospects of oocyte cryopreservation in domestic animals and humans.
Collapse
Affiliation(s)
- Theerawat Tharasanit
- Department of Obstetrics, Gynecology and Reproduction, Faculty of Veterinary Science, Bangkok 10330, Thailand
- Veterinary Clinical Stem Cells and Bioengineering Research Unit, Chulalongkorn University, Bangkok 10330, Thailand
- Correspondence:
| | - Paweena Thuwanut
- Department of Obstetrics and Gynecology, Division of Reproductive Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand;
| |
Collapse
|
5
|
Liang Y, Yoisungnern T, Huang Y, Parnpai R. Effects of L-carnitine on embryo development of vitrified swamp buffalo oocytes following in vitro fertilization. Livest Sci 2020. [DOI: 10.1016/j.livsci.2020.103933] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
6
|
Jeong SG, Lee SE, Kim WJ, Park YG, Yoon JW, Park CO, Park HJ, Kim EY, Park SP. Pioglitazone improves porcine oocyte maturation and subsequent parthenogenetic embryo development in vitro by increasing lipid metabolism. Mol Reprod Dev 2019; 86:1245-1254. [PMID: 31429176 DOI: 10.1002/mrd.23252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 06/30/2019] [Indexed: 12/17/2022]
Abstract
Optimization of culture conditions is important to improve oocyte maturation and subsequent embryo development. In particular, this study analyzed the effects of increasing concentrations of PIO in the maturation medium on spindle formation and chromosome alignment, glutathione, and intracellular ROS levels and expression of selected genes related to maternal markers, apoptosis, and lipid metabolism. The percentage of oocytes displaying normal spindle formation and chromosome alignment was higher in the 1 µM PIO (1 PIO)-treated group than in the control group. The glutathione level was significantly higher in the 1 PIO-treated group than in the control group, while the reactive oxygen species level did not differ. Expression of maternal marker (MOS and GDF9), antiapoptotic (BIRC5), and lipid metabolism-related (ACADS, CPT2, SREBF1, and PPARG) genes was higher in the 1 PIO-treated group than in the control group, while expression of a proapoptotic gene (CASP3) was lower. The blastocyst formation rate and the percentage of blastocysts that reached at least the hatching stage on Days 6 and 7, and the percentage of blastocysts containing more than 128 cells were significantly higher in the 1 PIO-treated group than in the control group. These results indicate that PIO treatment during in vitro maturation improves porcine oocyte maturation and subsequent parthenogenetic embryo development mainly by enhancing lipid metabolism and antioxidant defense in oocytes.
Collapse
Affiliation(s)
- Sang-Gi Jeong
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju-si, Korea.,Stem Cell Research Center, Jeju National University, Jeju-si, Korea
| | - Seung-Eun Lee
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju-si, Korea.,Stem Cell Research Center, Jeju National University, Jeju-si, Korea
| | - Won-Jae Kim
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju-si, Korea.,Stem Cell Research Center, Jeju National University, Jeju-si, Korea
| | - Yun-Gwi Park
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju-si, Korea.,Stem Cell Research Center, Jeju National University, Jeju-si, Korea
| | - Jae-Wook Yoon
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju-si, Korea.,Stem Cell Research Center, Jeju National University, Jeju-si, Korea
| | - Chan-Oh Park
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju-si, Korea.,Stem Cell Research Center, Jeju National University, Jeju-si, Korea
| | - Hyo-Jin Park
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju-si, Korea.,Stem Cell Research Center, Jeju National University, Jeju-si, Korea
| | - Eun-Young Kim
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju-si, Korea.,Stem Cell Research Center, Jeju National University, Jeju-si, Korea.,Mirae Cell Bio, Seoul, Korea
| | - Se-Pill Park
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju-si, Korea.,Stem Cell Research Center, Jeju National University, Jeju-si, Korea.,Mirae Cell Bio, Seoul, Korea
| |
Collapse
|
7
|
Somfai T, Nguyen VK, Vu HTT, Nguyen HLT, Quan HX, Viet Linh N, Phan SL, Pham LD, Cuc NTK, Kikuchi K. Cryopreservation of immature oocytes of the indigeneous Vietnamese Ban Pig. Anim Sci J 2019; 90:840-848. [PMID: 31006939 DOI: 10.1111/asj.13209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/17/2019] [Accepted: 03/21/2019] [Indexed: 11/30/2022]
Abstract
We report the cryopreservation of oocytes from Ban miniature pigs which are endemic in Vietnam. Immature cumulus-oocyte complexes were collected from antral follicles of 7-8 mo old female cyclic Ban pigs and vitrified in micro-drops. Oocyte morphology, lipid content, post-warming survival, nuclear maturation, and embryo development were compared to those of oocytes from commercially slaughtered Landrace × Large white hybrid pigs. The size of oocytes in the two breeds was similar. However, significantly lower amounts of intracellular lipid were detected in Ban oocytes. There was no difference (p > 0.05) between Ban and Landrace × Large white oocytes in percentages of post-warming survival (93.1 ± 3.4% vs. 70.7 ± 16.7%, respectively) and nuclear maturation after in vitro maturation (80.4 ± 5.1% vs. 90.0 ± 1.3% respectively). Similarly, cleavage (30.8 ± 7.8% vs. 10.3 ± 6.1%, respectively) and blastocyst development rates (9.4 ± 5.0% vs. 0.79 ± 0.79, respectively) were not different (p > 0.05) between vitrified Ban and Landrace × Large white oocytes after in vitro fertilization and embryo culture. In conclusion, high survival and maturation rates were achieved after vitrification of immature Ban oocytes and their cryo-tolerance was similar to that of Landrace × Large white oocytes, despite the difference in lipid content. We succeeded to generate reasonable rates of blastocysts from vitrified Ban oocytes by in vitro fertilization.
Collapse
Affiliation(s)
- Tamas Somfai
- Animal Breeding and Reproduction Research Division, Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Van Khanh Nguyen
- Key Lab of Animal Cell Biotechnology, National Institute of Animal Science, Hanoi, Vietnam
| | - Huong Thu Thi Vu
- Key Lab of Animal Cell Biotechnology, National Institute of Animal Science, Hanoi, Vietnam
| | - Huong Le Thi Nguyen
- Key Lab of Animal Cell Biotechnology, National Institute of Animal Science, Hanoi, Vietnam
| | - Huu Xuan Quan
- Key Lab of Animal Cell Biotechnology, National Institute of Animal Science, Hanoi, Vietnam
| | - Nguyen Viet Linh
- Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Son Le Phan
- National Institute of Animal Science, Hanoi, Vietnam
| | - Lan Doan Pham
- Key Lab of Animal Cell Biotechnology, National Institute of Animal Science, Hanoi, Vietnam
| | | | - Kazuhiro Kikuchi
- Division of Animal Sciences, Institute of Agrobiological Sciences, NARO, Tsukuba, Japan.,The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| |
Collapse
|
8
|
Qasim M, Jin JX, Lee S, Taweechaipaisankul A, Setyawan EMN, Kim GA, Lee BC. Effects of manganese on maturation of porcine oocytes in vitro and their subsequent embryo development after parthenogenetic activation and somatic cell nuclear transfer. J Reprod Dev 2019; 65:259-265. [PMID: 30905887 PMCID: PMC6584182 DOI: 10.1262/jrd.2019-001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
This study was carried out to examine the effects of manganese (Mn) on the developmental competence of porcine oocytes during in vitro maturation (IVM) after
parthenogenetic activation (PA) and somatic cell nuclear transfer (SCNT). Upon treatment of porcine oocytes with different concentrations (0, 3, 6, and 12 ng/ml) of Mn during IVM, PA was
performed to determine the optimum concentration. Following PA, the rate of blastocyst formation was higher significantly in treated porcine oocytes at 6 ng/ml of Mn than in other groups (P
< 0.05). However, there was no substantial difference in the cleavage rate and total blastocyst cell numbers among all groups. SCNT was performed using the optimal concentration of Mn
from PA, which showed an improved blastocyst formation rate in treated oocytes compared to that in control group (P < 0.05). However, the cleavage rate and total cell numbers per
blastocyst were not different between the control and the Mn treated groups after SCNT. Additionally, oocyte nuclear maturation, intracellular glutathione (GSH), and reactive oxygen species
(ROS) levels were assessed. There was no significant difference observed in nuclear maturation among all the groups. However, enhanced intracellular GSH levels while lower levels of ROS were
seen in the Mn treated group compared to the control group (P < 0.05). Thus, these results indicate that Mn supplementation can improve the developmental competence of porcine PA and SCNT
embryos by increasing GSH and decreasing ROS levels.
Collapse
Affiliation(s)
- Muhammad Qasim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Jun-Xue Jin
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea.,Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, College of Life Science, Northeast Agriculture University, Heilongjiang 150030, China
| | - Sanghoon Lee
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea.,Futuristic Animal Resource & Research Center, Korea Research Institute of Bioscience and Biotechnology, Chungcheongbuk-do 28116, Republic of Korea
| | - Anukul Taweechaipaisankul
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Erif Maha Nugraha Setyawan
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Geon A Kim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Byeong Chun Lee
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| |
Collapse
|
9
|
Park YG, Lee SE, Son YJ, Jeong SG, Shin MY, Kim WJ, Kim EY, Park SP. Antioxidant β-cryptoxanthin enhances porcine oocyte maturation and subsequent embryo development in vitro. Reprod Fertil Dev 2018; 30:1204-1213. [DOI: 10.1071/rd17444] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 02/16/2018] [Indexed: 12/12/2022] Open
Abstract
Oxidative stress is partly responsible for the poor quality of IVM oocytes. The present study investigated the effects of the antioxidant β-cryptoxanthin on the IVM of porcine oocytes and the in vitro development of the ensuing embryos. Oocytes were matured in IVM medium containing different concentrations of β-cryptoxanthin (0, 0.1, 1, 10 or 100 μM). Treatment with 1 µM β-cryptoxanthin (Group 1B) improved polar body extrusion and the expression of maturation-related genes in cumulus cells and oocytes compared with control. In addition, levels of reactive oxygen species decreased significantly in Group 1B, whereas there were significant increases in glutathione levels and expression of the antioxidant genes superoxide dismutase 1 and peroxiredoxin 5 in this group. After parthenogenetic activation, although the cleavage rate did not differ between the control and 1B groups, the blastocyst formation rate was higher in the latter. Moreover, the total number of cells per blastocyst and relative mRNA levels of pluripotency marker and antioxidant genes were significantly higher in the 1B compared with control group. These results demonstrate that β-cryptoxanthin decreases oxidative stress in porcine oocytes and improves their quality and developmental potential.
Collapse
|
10
|
Quan G, Wu G, Hong Q. Oocyte Cryopreservation Based in Sheep: The Current Status and Future Perspective. Biopreserv Biobank 2017; 15:535-547. [DOI: 10.1089/bio.2017.0074] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Affiliation(s)
- Guobo Quan
- Department of Herbivore Science, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan Province, China
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada
| | - Guoquan Wu
- Department of Herbivore Science, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan Province, China
| | - Qionghua Hong
- Department of Herbivore Science, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan Province, China
| |
Collapse
|
11
|
Treatment of allicin improves maturation of immature oocytes and subsequent developmental ability of preimplantation embryos. ZYGOTE 2017; 25:480-488. [DOI: 10.1017/s0967199417000302] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
SummaryAllicin (AL) regulates the cellular redox, proliferation, viability, and cell cycle of different cells against extracellular-derived stress. This study investigated the effects of allicin treatment on porcine oocyte maturation and developmental competence. Porcine oocytes were cultured in medium supplemented with 0 (control), 0.01, 0.1, 1, 10 or 100 μM AL, respectively, during in vitro maturation (IVM). The rate of polar body emission was higher in the 0.1 AL-treated group (74.5% ± 2.3%) than in the control (68.0% ± 2.6%) (P < 0.1). After parthenogenetic activation, the rates of cleavage and blastocyst formation were significantly higher in the 0.1 AL-treated group than in the control (P < 0.05). The reactive oxygen species level at metaphase II did not significantly differ among all groups. In matured oocytes, the expression of both BAK and CASP3, and BIRC5 was significantly lower and higher, respectively, in the 0.1 AL-treated group than in the control. Similarly, the expression of BMP15 and CCNB1, and the activity of phospho-p44/42 mitogen-activated protein kinase (MAPK), significantly increased. These results indicate that supplementation of oocyte maturation medium with allicin during IVM improves the maturation of oocytes and the subsequent developmental competence of porcine oocytes.
Collapse
|
12
|
Abe T, Kawahara-Miki R, Hara T, Noguchi T, Hayashi T, Shirasuna K, Kuwayama T, Iwata H. Modification of mitochondrial function, cytoplasmic lipid content and cryosensitivity of bovine embryos by resveratrol. J Reprod Dev 2017; 63:455-461. [PMID: 28603221 PMCID: PMC5649094 DOI: 10.1262/jrd.2016-182] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Resveratrol is a potent activator of NAD-dependent deacetyltransferase sirtuin-1 (SIRT1) and affects lipid metabolism and ATP generation in somatic cells. In the present study, the effects of supplementing culture medium with
resveratrol on lipid metabolism, ATP generation, and cryosensitivity of bovine in vitro produced embryos were investigated. Bovine early cleaved-stage embryos were cultured in medium containing 0 or 0.5 µM
resveratrol for 1 or 5 days. Resveratrol treatment for both 1 day and 5 days increased the expression levels of SIRT1 and phosphorylated AMP-activated protein kinase (pAMPK) in the embryos. Furthermore, resveratrol treatment was
effective to increase ATP generation and reduce lipid content of the embryos. The effects of resveratrol treatment were diminished by the SIRT1 inhibitor “EX527”, and the reduced lipid content was reversed by treatment with
etomoxir (a potent inhibitor of beta-oxidation). Blastocysts developed after resveratrol treatment showed low levels reactive oxygen species and increased cryotolerance. These results demonstrate that resveratrol improves
in vitro development of bovine embryos, while reducing cytoplasmic lipid content through activation of beta-oxidation, thereby effective for production of bovine blastocysts with enhanced cryotolerance.
Collapse
Affiliation(s)
- Takahito Abe
- Tokyo University of Agriculture, Kanagawa 243-0034, Japan
| | | | - Tomotaka Hara
- Tokyo University of Agriculture, Kanagawa 243-0034, Japan
| | - Tatsuo Noguchi
- Tokyo University of Agriculture, Kanagawa 243-0034, Japan
| | - Takeshi Hayashi
- Fukuoka Agriculture and Forestry Research Center, Fukuoka 818-8549, Japan
| | | | | | - Hisataka Iwata
- Tokyo University of Agriculture, Kanagawa 243-0034, Japan
| |
Collapse
|
13
|
Kamoshita M, Kato T, Fujiwara K, Namiki T, Matsumura K, Hyon SH, Ito J, Kashiwazaki N. Successful vitrification of pronuclear-stage pig embryos with a novel cryoprotective agent, carboxylated ε-poly-L-lysine. PLoS One 2017; 12:e0176711. [PMID: 28448636 PMCID: PMC5407792 DOI: 10.1371/journal.pone.0176711] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 04/15/2017] [Indexed: 11/18/2022] Open
Abstract
Vitrification is a powerful tool for the efficient production of offspring derived from cryopreserved oocytes or embryos in mammalian species including domestic animals. Genome editing technologies such as transcription activator-like effector nucleases (TALENs) and clustered regularly interspaced short palindromic repeats (CRISPR)/ CRISPR-associated (Cas)9 are now available even for domestic species, suggesting that the vitrification of embryos at the pronuclear stage (PN) will be more important because they could provide genomic host cells to be targeted by TALENs or CRISPR/Cas9. Although we reported the successful production of piglets derived from vitrified PN embryos by a solid-surface vitrification method with glutathione supplementation, further improvements are required. The cryoprotective agent (CPA) carboxylated ε-poly-L-lysine (COOH-PLL) was introduced in 2009. COOH-PLL reduces the physical and physiological damage caused by cryopreservation in mammalian stem cells and the vitrification of mouse oocytes and embryos. Those results suggested that vitrification of COOH-PLL may help improve the developmental ability of pig embryos vitrified at the PN stage. However, it remains unclear whether COOH-PLL is available as a CPA for the vitrification of embryos in domestic species. In this study, we evaluated COOH-PLL as a CPA with ethylene glycol (EG) and Cryotop as a device for the vitrification of PN pig embryos. Exposure to vitrification solution supplemented with COOH-PLL up to 30% did not decrease developmental ability to the 2-cell stage and the blastocyst stage. After warming, most of the vitrified embryos survived regardless of the concentration of COOH-PLL (76.0 ± 11.8% to 91.8 ± 4.6%). However, the vitrified embryos without COOH-PLL showed a lower development rate up to the blastocyst stage (1.3 ± 1.0%) compared to the fresh embryos (28.4 ± 5.0%) (p<0.05). In contrast, supplementation of 20% (w/v) COOH-PLL in the vitrification solution dramatically improved the developmental ability to blastocysts of the vitrified embryos (19.4 ± 4.6%) compared to those without COOH-PLL (p<0.05). After the transfer of embryos vitrified with 30% (v/v) EG and 20% (w/v) COOH-PLL, we successfully obtained 15 piglets from 8 recipients. Taken together, our present findings demonstrate for the first time that COOH-PLL is an effective CPA for embryo vitrification in the pig. COOH-PLL is a promising CPA for further improvements in the vitrification of oocytes and embryos in mammalian species.
Collapse
Affiliation(s)
- Maki Kamoshita
- Laboratory of Animal Reproduction, Graduate School of Veterinary Science, Azabu University, Sagamihara, Japan
| | - Tsubasa Kato
- Laboratory of Animal Reproduction, Graduate School of Veterinary Science, Azabu University, Sagamihara, Japan
| | - Katsuyoshi Fujiwara
- Laboratory of Animal Reproduction, Graduate School of Veterinary Science, Azabu University, Sagamihara, Japan
| | - Takafumi Namiki
- Laboratory of Animal Reproduction, Graduate School of Veterinary Science, Azabu University, Sagamihara, Japan
| | | | - Suong-Hyu Hyon
- Center for Fiber and Textile Science, Kyoto Institute of Technology, Matsugasaki, Kyoto, Japan
| | - Junya Ito
- Laboratory of Animal Reproduction, Graduate School of Veterinary Science, Azabu University, Sagamihara, Japan
- School of Veterinary Medicine, Azabu University, Sagamihara, Japan
| | - Naomi Kashiwazaki
- Laboratory of Animal Reproduction, Graduate School of Veterinary Science, Azabu University, Sagamihara, Japan
- School of Veterinary Medicine, Azabu University, Sagamihara, Japan
| |
Collapse
|
14
|
Niu Y, Dai J, Wu C, Chen Y, Zhang S, Zhang D. The application of apoptotic inhibitor in apoptotic pathways of MII stage porcine oocytes after vitrification. Reprod Domest Anim 2016; 51:953-959. [DOI: 10.1111/rda.12772] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 07/31/2016] [Indexed: 11/27/2022]
Affiliation(s)
- Y Niu
- Institute of Animal Science and Veterinary Science; Shanghai Academy of Agricultural Sciences; Shanghai China
- Division of Animal Genetic Engineering; Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding; Shanghai China
| | - J Dai
- Institute of Animal Science and Veterinary Science; Shanghai Academy of Agricultural Sciences; Shanghai China
- Division of Animal Genetic Engineering; Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding; Shanghai China
| | - C Wu
- Institute of Animal Science and Veterinary Science; Shanghai Academy of Agricultural Sciences; Shanghai China
- Division of Animal Genetic Engineering; Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding; Shanghai China
| | - Y Chen
- Institute of Animal Science and Veterinary Science; Shanghai Academy of Agricultural Sciences; Shanghai China
- Division of Animal Genetic Engineering; Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding; Shanghai China
| | - S Zhang
- Institute of Animal Science and Veterinary Science; Shanghai Academy of Agricultural Sciences; Shanghai China
- Division of Animal Genetic Engineering; Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding; Shanghai China
| | - D Zhang
- Institute of Animal Science and Veterinary Science; Shanghai Academy of Agricultural Sciences; Shanghai China
- Division of Animal Genetic Engineering; Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding; Shanghai China
| |
Collapse
|
15
|
Somfai T, Men NT, Noguchi J, Kaneko H, Kashiwazaki N, Kikuchi K. Optimization of cryoprotectant treatment for the vitrification of immature cumulus-enclosed porcine oocytes: comparison of sugars, combinations of permeating cryoprotectants and equilibration regimens. J Reprod Dev 2015; 61:571-9. [PMID: 26411536 PMCID: PMC4685224 DOI: 10.1262/jrd.2015-089] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Our aim was to optimize the cryoprotectant treatment for the preservation of immature porcine cumulus-oocyte
complexes (COCs) by solid surface vitrification. In each experiment, the vitrification solution consisted of
50 mg/ml polyvinyl pyrrolidone, 0.3 M of the actual sugar and in total 35% (v/v) of the actual permeating
cryoprotectant (pCPA) combination. After warming, the COCs were subjected to in vitro
maturation, fertilization and embryo culture. In Experiment 1, trehalose and sucrose were equally effective
during vitrification and warming in terms of facilitating oocyte survival and subsequent embryo development.
In Experiment 2, when equilibration was performed at 38.5 C in a total of 4% (v/v) pCPA for 15 min, the
combination of ethylene glycol and propylene glycol (EG + PG = 1:1) was superior to EG and dimethyl sulfoxide
(EG + DMSO = 1:1) in terms of oocyte survival after vitrification and the quality of resultant blastocysts. In
Experiment 3, equilibration in 4% (v/v) pCPA for 15 min before vitrification was superior to that in 15% (v/v)
CPA for 5 min for achievement of high survival rates irrespective of the pCPA combination used. In Experiment
4, when equilibration was performed in 4% EG + PG for 5 min, 15 min or 25 min, there was no difference in
oocyte survival and subsequent embryo development after vitrification and warming; however, the developmental
competence of cleaved embryos was tendentiously reduced when equilibration was performed for 25 min. In
conclusion, trehalose and sucrose were equally effective in facilitating vitrification, and the optimum pCPA
treatment was 5–15 min equilibration in 4% (v/v) of EG + PG followed by vitrification in 35% (v/v) EG +
PG.
Collapse
Affiliation(s)
- Tamás Somfai
- NARO Institute of Livestock and Grassland Science, Ibaraki 305-0901, Japan
| | | | | | | | | | | |
Collapse
|
16
|
Nohalez A, Martinez C, Gil M, Almiñana C, Roca J, Martinez E, Cuello C. Effects of two combinations of cryoprotectants on the in vitro developmental capacity of vitrified immature porcine oocytes. Theriogenology 2015; 84:545-52. [DOI: 10.1016/j.theriogenology.2015.04.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 03/24/2015] [Accepted: 04/11/2015] [Indexed: 11/29/2022]
|
17
|
Cryopreservation of mammalian oocytes and embryos: current problems and future perspectives. SCIENCE CHINA-LIFE SCIENCES 2014; 57:903-14. [DOI: 10.1007/s11427-014-4689-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 02/03/2014] [Indexed: 01/19/2023]
|
18
|
Recent progress in cryopreservation of bovine oocytes. BIOMED RESEARCH INTERNATIONAL 2014; 2014:570647. [PMID: 24738063 PMCID: PMC3971499 DOI: 10.1155/2014/570647] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 01/20/2014] [Indexed: 12/18/2022]
Abstract
Principle of oocyte cryoinjury is first overviewed and then research history of cryopreservation using bovine oocytes is summarized for the last two decades with a few special references to recent progresses. Various types of cryodevices have been developed to accelerate the cooling rate and applied to the oocytes from large domestic species enriched with cytoplasmic lipid droplets. Two recent approaches include the qualitative improvement of IVM oocytes prior to the vitrification and the short-term recovery culture of vitrified-warmed oocytes prior to the subsequent IVF. Supplementation of L-carnitine to IVM medium of bovine oocytes has been reported to reduce the amount of cytoplasmic lipid droplets and improve the cryotolerance of the oocytes, but it is still controversial whether the positive effect of L-carnitine is reproducible. Incidence of multiple aster formation, a possible cause for low developmental potential of vitrified-warmed bovine oocytes, was inhibited by a short-term culture of the postwarm oocytes in the presence of Rho-associated coiled-coil kinase (ROCK) inhibitor. Use of an antioxidant α-tocopherol, instead of the ROCK inhibitor, also supported the revivability of the postwarm bovine oocytes. Further improvements of the vitrification procedure, combined with pre- and postvitrification chemical treatment, would overcome the high sensitivity of bovine oocytes to cryopreservation.
Collapse
|
19
|
Jin B, Higashiyama RI, Nakata YI, Yonezawa JI, Xu S, Miyake M, Takahashi SI, Kikuchi K, Yazawa KI, Mizobuchi S, Niimi S, Kitayama M, Koshimoto C, Matsukawa K, Kasai M, Edashige K. Rapid Movement of Water and Cryoprotectants in Pig Expanded Blastocysts via Channel Processes: Its Relevance to Their Higher Tolerance to Cryopreservation1. Biol Reprod 2013; 89:87. [DOI: 10.1095/biolreprod.112.107250] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
|
20
|
Jang W, Lee S, Choi H, Lim J, Heo Y, Cui X, Kim N. Vitrification of immaturemouse oocytes by the modified‐cut standard straw method. Cell Biol Int 2013; 38:164-71. [DOI: 10.1002/cbin.10163] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 07/22/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Woo‐In Jang
- Department of Animal SciencesChungbuk National UniversityCheongjuChungbuk361‐763South Korea
| | - Seung‐Eun Lee
- Stem Cell Research CenterJeju National UniversityJejuKorea
| | - Hyun‐Yong Choi
- Department of Animal SciencesChungbuk National UniversityCheongjuChungbuk361‐763South Korea
| | - Joon‐Gyo Lim
- Department of Animal SciencesChungbuk National UniversityCheongjuChungbuk361‐763South Korea
| | - Young‐Tae Heo
- Department of Animal SciencesChungbuk National UniversityCheongjuChungbuk361‐763South Korea
| | - Xiang‐Shun Cui
- Department of Animal SciencesChungbuk National UniversityCheongjuChungbuk361‐763South Korea
| | - Nam‐Hyung Kim
- Department of Animal SciencesChungbuk National UniversityCheongjuChungbuk361‐763South Korea
| |
Collapse
|
21
|
Choi JY, Kang JT, Park SJ, Kim SJ, Moon JH, Saadeldin IM, Jang G, Lee BC. Effect of 7,8-dihydroxyflavone as an antioxidant on in vitro maturation of oocytes and development of parthenogenetic embryos in pigs. J Reprod Dev 2013; 59:450-6. [PMID: 23748647 PMCID: PMC3934122 DOI: 10.1262/jrd.2012-134] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
One of the factors that impairs in vitro produced porcine embryos
is the oxidative stress that is mainly caused by the imbalance between reactive
oxygen species (ROS) generation and antioxidants activity, especially that of
glutathione (GSH). Here, we examined the effect of 7,8-dihydroxyflavone (7,8-DHF), a
kind of flavonoid antioxidant, on porcine oocyte maturation and its developmental
competence. Porcine oocytes were cultured in media supplemented with 0, 1, 5 and 10
μM 7,8-DHF during both in vitro maturation (IVM) and in
vitro culture (IVC) after parthenogenetic activation. Maturation of
oocytes was evaluated based on first polar body (PB) extrusion and intracellular GSH
level, and developmental competence was assessed through observing cleavage and
blastocyst formation. In each step, the levels of intracellular GSH and ROS were
assessed by fluorescence intensity, and the apoptosis-related gene expression was
examined using semiquantitative RT-PCR. The group treated with 1 μM 7,8-DHF during
IVM and IVC showed increased cytoplasmic maturation and reached the blastocysts stage
(36.1%) at a higher rate than the other groups (24.7, 16.0 and 10.3% for 0, 5 and 10
μM, P<0.05). In that group, the intracellular GSH level was significantly
increased while ROS generation was significantly decreased after IVM and IVC
(P<0.05). Moreover, it showed high expression of an anti-apoptotic gene
(BCL2L1) and low expression of a pro-apoptotic gene
(BAK1) (P<0.05). In conclusion, treatment with 1 μM 7,8-DHF
during IVM and IVC showed an anti-apoptotic effect by increasing intracellular GSH
synthesis and scavenging ROS and therefore improved the developmental competence of
porcine embryos.
Collapse
Affiliation(s)
- Ji-Yei Choi
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Korea
| | | | | | | | | | | | | | | |
Collapse
|
22
|
Wu G, Jia B, Mo X, Liu C, Fu X, Zhu S, Hou Y. Nuclear maturation and embryo development of porcine oocytes vitrified by cryotop: effect of different stages of in vitro maturation. Cryobiology 2013; 67:95-101. [PMID: 23742797 DOI: 10.1016/j.cryobiol.2013.05.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 05/23/2013] [Accepted: 05/24/2013] [Indexed: 11/16/2022]
Abstract
The present study was designed to evaluate the viability, meiotic competence and subsequent development of porcine oocytes vitrified using the cryotop method at different stages of in vitro maturation (IVM). Cumulus-oocyte complexes (COCs) were cultured in IVM medium supplemented with 1mM dibutyryl cAMP (dbcAMP) for 22 h and then for an additional 22 h without dbcAMP in the medium. Germinal vesicle (GV), germinal vesicle breakdown (GVBD), metaphase I (MI), anaphase I/telophase I (AI/TI) and metaphase II (MII) were found to occur predominantly at 0-22, 26, 32, 38 and 44 h of IVM, respectively. Oocytes were exposed to cryoprotectant (CPA) or vitrified after different durations of IVM (0, 22, 26, 32, 38 and 44 h). After CPA exposure and vitrification, surviving oocytes that were treated before completion of the 44 h maturation period were placed back into IVM medium for the remaining maturation period, and matured oocytes were incubated for 2h. CPA treatment did not affect the viability of oocytes matured for 26, 32, 38 or 44 h, but significantly decreased survival rate of oocytes matured for 0 or 22 h. CPA treatment had no effect on the ability of surviving oocytes to develop to the MII stage regardless of the stage during IVM; however, blastocyst formation following PA was severely lower (P<0.05) than that in the control. At 2h post-warming, the survival rates of oocytes vitrified at 26, 32, 38 and 44 h of IVM were similar but were higher (P<0.05) than those of oocytes vitrified at 0 or 22 h of IVM. The MII rates of surviving oocytes vitrified at 0 and 38 h of IVM did not differ from the control and were higher (P<0.05) than those of oocytes vitrified at 22, 26 or 32 h of IVM. After parthenogenetic activation (PA), both cleavage and blastocyst rates of vitrified oocytes matured for 22, 26, 32, 38 and 44 h did not differ, but all were lower (P<0.05) than those matured 0 h. In conclusion, our data indicate that survival, nuclear maturation and subsequent development of porcine oocytes may be affected by their stage of maturation at the time of vitrification; a higher percentage of blastocyst formation can be obtained from GV oocytes vitrified before the onset of maturation.
Collapse
Affiliation(s)
- Guoquan Wu
- State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
23
|
Generating porcine chimeras using inner cell mass cells and parthenogenetic preimplantation embryos. PLoS One 2013; 8:e61900. [PMID: 23626746 PMCID: PMC3633951 DOI: 10.1371/journal.pone.0061900] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2012] [Accepted: 03/15/2013] [Indexed: 01/27/2023] Open
Abstract
Background The development and validation of stem cell therapies using induced pluripotent stem (iPS) cells can be optimized through translational research using pigs as large animal models, because pigs have the closest characteristics to humans among non-primate animals. As the recent investigations have been heading for establishment of the human iPS cells with naïve type characteristics, it is an indispensable challenge to develop naïve type porcine iPS cells. The pluripotency of the porcine iPS cells can be evaluated using their abilities to form chimeras. Here, we describe a simple aggregation method using parthenogenetic host embryos that offers a reliable and effective means of determining the chimera formation ability of pluripotent porcine cells. Methodology/Significant Principal Findings In this study, we show that a high yield of chimeric blastocysts can be achieved by aggregating the inner cell mass (ICM) from porcine blastocysts with parthenogenetic porcine embryos. ICMs cultured with morulae or 4–8 cell-stage parthenogenetic embryos derived from in vitro-matured (IVM) oocytes can aggregate to form chimeric blastocysts that can develop into chimeric fetuses after transfer. The rate of production of chimeric blastocysts after aggregation with host morulae (20/24, 83.3%) was similar to that after the injection of ICMs into morulae (24/29, 82.8%). We also found that 4–8 cell-stage embryos could be used; chimeric blastocysts were produced with a similar efficiency (17/26, 65.4%). After transfer into recipients, these blastocysts yielded chimeric fetuses at frequencies of 36.0% and 13.6%, respectively. Conclusion/Significance Our findings indicate that the aggregation method using parthenogenetic morulae or 4–8 cell-stage embryos offers a highly reproducible approach for producing chimeric fetuses from porcine pluripotent cells. This method provides a practical and highly accurate system for evaluating pluripotency of undifferentiated cells, such as iPS cells, based on their ability to form chimeras.
Collapse
|
24
|
Hirose M, Kamoshita M, Fujiwara K, Kato T, Nakamura A, Wojcikiewicz RJH, Parys JB, Ito J, Kashiwazaki N. Vitrification procedure decreases inositol 1,4,5-trisphophate receptor expression, resulting in low fertility of pig oocytes. Anim Sci J 2013; 84:693-701. [PMID: 23607492 DOI: 10.1111/asj.12061] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Accepted: 01/30/2013] [Indexed: 01/25/2023]
Abstract
Although cryopreservation of mammalian oocytes is an important technology, it is well known that unfertilized oocytes, especially in pigs, are highly sensitive to low temperature and that cryopreserved oocytes show low fertility and developmental ability. The aim of the present study was to clarify why porcine in vitro matured (IVM) oocytes at the metaphase II (MII) stage showed low fertility and developmental ability after vitrification. In vitro matured cumulus oocyte complexes (COCs) were vitrified with Cryotop and then evaluated for fertility through in vitro fertilization (IVF). Although sperm-penetrated oocytes were observed to some extent (30-40%), the rate of pronuclear formation was low (9%) and none of them progressed to the two-cell stage. The results suggest that activation ability of cryopreserved oocytes was decreased by vitrification. We examined the localization and expression level of the type 1 inositol 1,4,5 trisphosphate receptor (IP3 R1), the channel responsible for Ca(2+) release during IVF in porcine oocytes. Localization of IP3 R1 close to the plasma membrane and total expression level of IP3 R1 protein were both decreased by vitrification. In conclusion, our present study indicates that vitrified-warmed porcine COCs showed a high survival rate but low fertility after IVF. This low fertility seems to be due to the decrease in IP3 R1 by the vitrification procedure.
Collapse
Affiliation(s)
- Masahiko Hirose
- Laboratory of Animal Reproduction, Graduate School of Veterinary Sciences, Sagamihara, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Chankitisakul V, Somfai T, Inaba Y, Techakumphu M, Nagai T. Supplementation of maturation medium with L-carnitine improves cryo-tolerance of bovine in vitro matured oocytes. Theriogenology 2012; 79:590-8. [PMID: 23261307 DOI: 10.1016/j.theriogenology.2012.11.011] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Revised: 11/12/2012] [Accepted: 11/12/2012] [Indexed: 11/30/2022]
Abstract
The objective was to determine the effects of adding L-carnitine (an enhancer of lipid metabolism) during IVM, on cryotolerance and developmental competence of bovine oocytes. Oocytes matured in the absence (control) or presence (0.6 mg/mL) of L-carnitine were subjected to IVF and embryo culture after Cryotop vitrification or nonvitrification at the metaphase stage of the second meiotic cell division. Cleavage and blastocyst formation rates, and inner cell mass and trophectoderm cell numbers were determined. Also, ATP content in IVM oocytes was measured and intracellular lipid droplets were observed (Nile red staining and confocal microscopy). L-carnitine had no significant effect on the rate of matured oocytes. Vitrification reduced (P < 0.05) mean (±SEM) rates of live oocytes both in control (80.6 ± 1.9%) and L-carnitine groups (82.7 ± 5.1%) compared with nonvitrified oocytes (100%). After IVF, cleavage rates of vitrified control and L-carnitine groups (56.5 ± 3.9% and 62.8 ± 5.1%, respectively) were significantly lower than those in nonvitrified control and L-carnitine groups (83.9 ± 4.2% and 84.3 ± 1.3%). After vitrification, blastocyst formation rate in the L-carnitine group (54.4 ± 5.2%) was significantly higher compared with the control (34.9 ± 4.4%), and did not significantly differ from those in nonvitrified control and L-carnitine groups (52.1 ± 4.2% and 52.8 ± 3.0%). The numbers and ratio of inner cell mass and trophectoderm cells in blastocysts did not differ significantly among groups. The ATP content in L-carnitine-treated oocytes tended to be higher compared with the control. Vitrification did not reduce ATP content in oocytes, irrespective of L-carnitine treatment. Treatment with L-carnitine dislocated lipid droplets from the peripheral area to the inner cytoplasm. In conclusion, L-carnitine supplementation during IVM redistributed lipid droplets in oocytes; if they survived vitrification, their developmental competence was similar to that of nonvitrified oocytes.
Collapse
|
26
|
Abstract
SummaryOne of the greatest challenges for reproductive cryobiologists today is to develop an efficient cryopreservation method for human and domestic animal oocytes. The objective of the present study was to optimize a low toxicity solution called VM3 to vitrify porcine oocytes using an open pulled straw (OPS) device and to evaluate the effects on viability, chromosomal organization and cortical granules distribution. Two experiments were conducted in this study. Firstly, we determined the minimum concentration of cryoprotectant present in the VM3 solution required (7.6 M) for vitrification using an OPS device. The appearance of opacity was observed when using a cooling solution at –196°C; no observable opacity was noted as vitrification. In addition, the ultrastructure of oocytes in VM3 or VM3 optimized solution was examined using cryo-scanning electron microscopy. The minimum total cryoprotectant concentration present in VM3 solution necessary for apparent vitrification was 5.6 M when combined with use of an OPS device. Use of both vitrification solutions showed a characteristic plasticized surface. In the second experiment, the relative cytotoxicity of vitrification solutions (VM3 and VM3 optimized) was studied. Oocyte viability, chromosomal organization and the cortical granules distribution were assessed by fluorescent stain. After warming, oocyte survival rate was similar to that of fresh oocytes. The vitrification process significantly reduced correct chromosomal organization and cortical granules distribution rates compared with the fresh oocytes group. However, correct chromosomal organization and cortical granules distribution rates did not differ among oocytes placed in different vitrification solutions. In conclusion, our data demonstrated that the VM3 solution can be optimized and that reduction in concentration to 5.6 M enabled vitrification of oocytes with an OPS device, however use of the VM3 optimised solution had no beneficial effect on vitrification of porcine oocytes.
Collapse
|
27
|
Advances on in vitro production and cryopreservation of porcine embryos. Anim Reprod Sci 2012; 132:115-22. [PMID: 22698497 DOI: 10.1016/j.anireprosci.2012.05.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2011] [Revised: 05/15/2012] [Accepted: 05/17/2012] [Indexed: 11/23/2022]
Abstract
There have been intensive attempts to establish reliable in vitro production (IVP) and cryopreservation methods of embryos in pigs. Although a great deal of progress has been made, current IVP systems and cryopreservation still suffer from insufficient cytoplasmic abilities of in vitro matured oocytes, polyspermic fertilization, poor quality of in vitro produced embryos and low efficiency of embryo cryopreservation. Compared to other mammalian species, pig oocytes and embryos are characterized by large amounts of lipid content stored mainly in the form of lipid droplets in the cytoplasm. This fact has a negative influence on biotechnological applications on porcine oocytes and embryos. In this review, we will discuss recent studies about methods and techniques for modifying porcine embryo IVP system and embryo cryopreservation that produces high quality of pig blastocysts using in vitro maturation, in vitro fertilization, in vitro culture, microsurgical manipulation, addition of protein, the use of cytoskeleton stabilizing agents and various physical methods. The presented methods and techniques make it possible to modify the characteristics of oocytes and embryos and thus may become major tools in mammalian gamete and embryo agricultural or biotechnological applications in the future.
Collapse
|
28
|
Jiménez-Trigos E, Naturil-Alfonso C, Vicente JS, Marco-Jiménez F. Post-Warming Competence ofIn VivoMatured Rabbit Oocytes Treated with Cytoskeletal Stabilization (Taxol) and Cytoskeletal Relaxant (Cytochalasin B) Before Vitrification. Reprod Domest Anim 2012; 48:15-9. [DOI: 10.1111/j.1439-0531.2012.02018.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
29
|
SOMFAI T, KIKUCHI K, NAGAI T. Factors Affecting Cryopreservation of Porcine Oocytes. J Reprod Dev 2012; 58:17-24. [DOI: 10.1262/jrd.11-140n] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Tamás SOMFAI
- National Institute of Livestock and Grassland Science, Ibaraki 305-0901, Japan
| | - Kazuhiro KIKUCHI
- National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
| | - Takashi NAGAI
- National Institute of Livestock and Grassland Science, Ibaraki 305-0901, Japan
| |
Collapse
|
30
|
Galeati G, Spinaci M, Vallorani C, Bucci D, Porcu E, Tamanini C. Pig oocyte vitrification by cryotop method: Effects on viability, spindle and chromosome configuration and in vitro fertilization. Anim Reprod Sci 2011; 127:43-9. [DOI: 10.1016/j.anireprosci.2011.07.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2011] [Revised: 06/18/2011] [Accepted: 07/13/2011] [Indexed: 10/18/2022]
|
31
|
Prentice JR, Anzar M. Cryopreservation of Mammalian oocyte for conservation of animal genetics. Vet Med Int 2010; 2011. [PMID: 20886016 PMCID: PMC2945659 DOI: 10.4061/2011/146405] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Accepted: 08/09/2010] [Indexed: 11/24/2022] Open
Abstract
The preservation of the female portion of livestock genetics has become an international priority; however, in situ conservation strategies are extremely expensive. Therefore, efforts are increasingly focusing on the development of a reliable cryopreservation method for oocytes, in order to establish ova banks. Slow freezing, a common method for cryopreservation of oocytes, causes osmotic shock (solution effect) and intracellular ice crystallization leading to cell damage. Vitrification is an alternative method for cryopreservation in which cells are exposed to a higher concentration of cryoprotectants and frozen with an ultra rapid freezing velocity, resulting in an ice crystal free, solid glass-like structure. Presently, vitrification is a popular method for cryopreservation of embryos. However, vitrification of oocytes is still challenging due to their complex structure and sensitivity to chilling.
Collapse
Affiliation(s)
- Jennifer R Prentice
- Canadian Animal Genetic Resources, Agriculture and Agri-Food Canada, Saskatoon Research Centre, 107 Science Place, Saskatoon, SK, Canada S7N 0X2
| | | |
Collapse
|