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Somfai T. Vitrification of immature oocytes in pigs. Anim Sci J 2024; 95:e13943. [PMID: 38578008 DOI: 10.1111/asj.13943] [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: 12/27/2023] [Revised: 02/27/2024] [Accepted: 03/04/2024] [Indexed: 04/06/2024]
Abstract
Cryopreservation of oocytes is an important technology for the in vitro gene banking of female germplasm. Although slow freezing is not feasible, porcine oocytes survive vitrification at high rates. Cryopreservation at the germinal vesicle stage appears to be more advantageous than that at the metaphase-II stage. Several factors are considered to affect the success of vitrification and subsequent utilization of immature porcine oocytes such as the device, the protocols for cryoprotectant application, warming, and the post-warming culture. Although live piglets could be obtained from vitrified immature oocytes, their competence to develop to the blastocyst stage is still reduced compared to their non-vitrified counterparts, indicating that there is room for further improvement. Vitrified oocytes suffer various types of damage and alteration which may reduce their developmental ability. Some of these can recover to some extent during subsequent culture, such as the damage of the cytoskeleton and mitochondria. Others such as premature nuclear progression, DNA damage and epigenetic alterations will require further research to be clarified and addressed. To date, the practical application of oocyte vitrification in pigs has been confined to the gene banking of a few native breeds.
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Affiliation(s)
- Tamás Somfai
- Animal Model Development Group, Division of Biomaterial Sciences, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Japan
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Isa T, Somfai T, Oyadomari M, Fusho K, Touma S, Suzuki N, Kaneko H, Katagiri Y, Kikuchi K. Production of Agu piglets after transfer of embryos produced in vitro. Anim Sci J 2022; 93:e13685. [PMID: 35083820 DOI: 10.1111/asj.13685] [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: 10/25/2021] [Revised: 12/24/2021] [Accepted: 01/06/2022] [Indexed: 11/28/2022]
Abstract
The present study was conducted to examine the feasibility of in vitro embryo production and transfer technologies for producing piglets of Agu, an Okinawan indigenous pig breed. After collection of oocytes from surgically dissected ovaries, they were subjected to in vitro maturation. After in vitro maturation/fertilization, a total of 616 putative embryos were transferred into four commercial Western pig recipients, one of which became pregnant and farrowed a total of eight Agu piglets. These results demonstrate that in vitro embryo production using ovaries from Agu females is useful for breeding management and conservation of indigenous breeds.
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Affiliation(s)
- Tsunemitsu Isa
- Okinawa Prefectural Livestock and Grassland Research Center, Nakijin, Japan
| | - Tamas Somfai
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Motoharu Oyadomari
- Okinawa Prefectural Livestock and Grassland Research Center, Nakijin, Japan.,Okinawa Prefectural Government, Naha, Japan
| | - Kyota Fusho
- Okinawa Prefectural Livestock and Grassland Research Center, Nakijin, Japan
| | - Shihei Touma
- Okinawa Prefectural Livestock and Grassland Research Center, Nakijin, Japan.,Okinawa Prefectural Government, Naha, Japan
| | - Naoto Suzuki
- Okinawa Prefectural Livestock and Grassland Research Center, Nakijin, Japan
| | - Hiroyuki Kaneko
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Yoshito Katagiri
- Okinawa Prefectural Livestock and Grassland Research Center, Nakijin, Japan
| | - Kazuhiro Kikuchi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
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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.
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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
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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
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Somfai T, Noguchi J, Kaneko H, Nakai M, Ozawa M, Kashiwazaki N, Egerszegi I, Rátky J, Nagai T, Kikuchi K. Production of good-quality porcine blastocysts by in vitro fertilization of follicular oocytes vitrified at the germinal vesicle stage. Theriogenology 2010; 73:147-56. [DOI: 10.1016/j.theriogenology.2009.08.008] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2009] [Revised: 08/07/2009] [Accepted: 08/11/2009] [Indexed: 11/26/2022]
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