Generation of porcine diploid blastocysts after injection of spermatozoa grown in nude mice

It is anticipated that the utilization of spermatogonia through testicular xenografting will open new avenues for the conservation of male gametes. With the aim of establishing this new technique for genetic preservation of pigs, we used it in combination with intracytoplasmic sperm injection (ICSI)...

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Veröffentlicht in:Theriogenology 2009-07, Vol.72 (1), p.2-9
Hauptverfasser: Nakai, M., Kaneko, H., Somfai, T., Maedomari, N., Ozawa, M., Noguchi, J., Kashiwazaki, N., Kikuchi, K.
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container_end_page 9
container_issue 1
container_start_page 2
container_title Theriogenology
container_volume 72
creator Nakai, M.
Kaneko, H.
Somfai, T.
Maedomari, N.
Ozawa, M.
Noguchi, J.
Kashiwazaki, N.
Kikuchi, K.
description It is anticipated that the utilization of spermatogonia through testicular xenografting will open new avenues for the conservation of male gametes. With the aim of establishing this new technique for genetic preservation of pigs, we used it in combination with intracytoplasmic sperm injection (ICSI). Testicular tissues derived from neonatal piglets, which contained seminiferous cords consisting of only gonocytes/spermatogonia, were transplanted under the back skin of castrated nude mice. Between 125 and 192 d after xenografting, sperm (morphologically similar to epididymal sperm) were recovered from 41 of the 65 host mice (63.1%). Testicular spermatozoa from adult boars were used as a positive control. A single spermatozoon was injected into an in vitro matured porcine oocyte, and the oocytes were electro-stimulated and cultured (graft-ICSI and testis-ICSI, respectively). Blastocyst rates in both ICSI groups (24.9% and 37.4%, respectively) were higher ( P < 0.05) than those without the injection procedure (parthenogenetic; 12.7%) and after injection of a small amount of injection buffer (sham; 13.0%). Rates of diploid blastocysts in both graft-ICSI and testis-ICSI groups (48.9% and 60.6%) were higher ( P < 0.05) than those in the parthenogenetic and sham groups (13.5% and 28.0%). Therefore, we demonstrated that porcine oocytes injected with xenogeneic sperm have in vitro developmental ability to the blastocyst stage.
doi_str_mv 10.1016/j.theriogenology.2008.10.020
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With the aim of establishing this new technique for genetic preservation of pigs, we used it in combination with intracytoplasmic sperm injection (ICSI). Testicular tissues derived from neonatal piglets, which contained seminiferous cords consisting of only gonocytes/spermatogonia, were transplanted under the back skin of castrated nude mice. Between 125 and 192 d after xenografting, sperm (morphologically similar to epididymal sperm) were recovered from 41 of the 65 host mice (63.1%). Testicular spermatozoa from adult boars were used as a positive control. A single spermatozoon was injected into an in vitro matured porcine oocyte, and the oocytes were electro-stimulated and cultured (graft-ICSI and testis-ICSI, respectively). Blastocyst rates in both ICSI groups (24.9% and 37.4%, respectively) were higher ( P &lt; 0.05) than those without the injection procedure (parthenogenetic; 12.7%) and after injection of a small amount of injection buffer (sham; 13.0%). Rates of diploid blastocysts in both graft-ICSI and testis-ICSI groups (48.9% and 60.6%) were higher ( P &lt; 0.05) than those in the parthenogenetic and sham groups (13.5% and 28.0%). 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Rates of diploid blastocysts in both graft-ICSI and testis-ICSI groups (48.9% and 60.6%) were higher ( P &lt; 0.05) than those in the parthenogenetic and sham groups (13.5% and 28.0%). Therefore, we demonstrated that porcine oocytes injected with xenogeneic sperm have in vitro developmental ability to the blastocyst stage.</description><subject>Animals</subject><subject>Animals, Newborn</subject><subject>assisted reproductive technologies</subject><subject>blastocyst</subject><subject>Blastocyst - physiology</subject><subject>Diploidy</subject><subject>embryo culture</subject><subject>embryogenesis</subject><subject>Embryonic Development</subject><subject>Female</subject><subject>ICSI</subject><subject>injection</subject><subject>intracytoplasmic sperm injection (ICSI)</subject><subject>Karyotyping - veterinary</subject><subject>Male</subject><subject>Mice</subject><subject>Mice, Nude</subject><subject>oocytes</subject><subject>Orchiectomy</subject><subject>Pig</subject><subject>Reproductive technology</subject><subject>Sperm Injections, Intracytoplasmic - veterinary</subject><subject>Spermatogenesis</subject><subject>spermatozoa</subject><subject>Spermatozoa - cytology</subject><subject>Spermatozoa - growth &amp; development</subject><subject>Swine</subject><subject>testes</subject><subject>testicular xenografting</subject><subject>Testis - cytology</subject><subject>Testis - transplantation</subject><subject>tissue transplantation</subject><subject>Transplantation, Heterologous</subject><subject>xenogeneic sperm</subject><subject>Xenografting</subject><subject>xenotransplantation</subject><issn>0093-691X</issn><issn>1879-3231</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkE1r3DAQhkVJ6W7S_oVGh5CbtxrLli3IJYR8QaCHJhDoQWil8UaLLbmSt2H766tlt5Tcchjm8D7zwUPIGbAFMBDf1ovpBaMLK_ShD6vtomSszdGClewDmUPbyIKXHI7InDHJCyHheUaOU1ozxrgQ8InMQAKvywrm5Octeox6csHT0NExROM8UuvGPjhLl71OUzDbNCWquwkjdX6N5h-eRoyDnsKfoOkqhlefY-o3FungDH4mHzvdJ_xy6Cfk6eb68equePh-e391-VCYqqmmwnDGoUXZGKykqSw2RhuLopZ1U4pGQiU4mFa3ACXkQiltLdquY6YCW2t-Qs73e8cYfm0wTWpwyWDfa49hk5RoONSiqjN4sQdNDClF7NQY3aDjVgFTO7lqrd7KVTu5uzTLzeNfD3c2ywHt_-GDzQyc7oFOB6VX0SX19KNkwPNq3jawI272BGYfvx1GlYxDb9C6mLUqG9z7fvkLcYWeaw</recordid><startdate>20090701</startdate><enddate>20090701</enddate><creator>Nakai, M.</creator><creator>Kaneko, H.</creator><creator>Somfai, T.</creator><creator>Maedomari, N.</creator><creator>Ozawa, M.</creator><creator>Noguchi, J.</creator><creator>Kashiwazaki, N.</creator><creator>Kikuchi, K.</creator><general>Elsevier Inc</general><general>[Oxford]: Butterworth-Heinemann; 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development</topic><topic>Swine</topic><topic>testes</topic><topic>testicular xenografting</topic><topic>Testis - cytology</topic><topic>Testis - transplantation</topic><topic>tissue transplantation</topic><topic>Transplantation, Heterologous</topic><topic>xenogeneic sperm</topic><topic>Xenografting</topic><topic>xenotransplantation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nakai, M.</creatorcontrib><creatorcontrib>Kaneko, H.</creatorcontrib><creatorcontrib>Somfai, T.</creatorcontrib><creatorcontrib>Maedomari, N.</creatorcontrib><creatorcontrib>Ozawa, M.</creatorcontrib><creatorcontrib>Noguchi, J.</creatorcontrib><creatorcontrib>Kashiwazaki, N.</creatorcontrib><creatorcontrib>Kikuchi, K.</creatorcontrib><collection>AGRIS</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Theriogenology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nakai, M.</au><au>Kaneko, H.</au><au>Somfai, T.</au><au>Maedomari, N.</au><au>Ozawa, M.</au><au>Noguchi, J.</au><au>Kashiwazaki, N.</au><au>Kikuchi, K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Generation of porcine diploid blastocysts after injection of spermatozoa grown in nude mice</atitle><jtitle>Theriogenology</jtitle><addtitle>Theriogenology</addtitle><date>2009-07-01</date><risdate>2009</risdate><volume>72</volume><issue>1</issue><spage>2</spage><epage>9</epage><pages>2-9</pages><issn>0093-691X</issn><eissn>1879-3231</eissn><abstract>It is anticipated that the utilization of spermatogonia through testicular xenografting will open new avenues for the conservation of male gametes. With the aim of establishing this new technique for genetic preservation of pigs, we used it in combination with intracytoplasmic sperm injection (ICSI). Testicular tissues derived from neonatal piglets, which contained seminiferous cords consisting of only gonocytes/spermatogonia, were transplanted under the back skin of castrated nude mice. Between 125 and 192 d after xenografting, sperm (morphologically similar to epididymal sperm) were recovered from 41 of the 65 host mice (63.1%). Testicular spermatozoa from adult boars were used as a positive control. A single spermatozoon was injected into an in vitro matured porcine oocyte, and the oocytes were electro-stimulated and cultured (graft-ICSI and testis-ICSI, respectively). Blastocyst rates in both ICSI groups (24.9% and 37.4%, respectively) were higher ( P &lt; 0.05) than those without the injection procedure (parthenogenetic; 12.7%) and after injection of a small amount of injection buffer (sham; 13.0%). Rates of diploid blastocysts in both graft-ICSI and testis-ICSI groups (48.9% and 60.6%) were higher ( P &lt; 0.05) than those in the parthenogenetic and sham groups (13.5% and 28.0%). Therefore, we demonstrated that porcine oocytes injected with xenogeneic sperm have in vitro developmental ability to the blastocyst stage.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>19135241</pmid><doi>10.1016/j.theriogenology.2008.10.020</doi><tpages>8</tpages></addata></record>
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source MEDLINE; Elsevier ScienceDirect Journals
subjects Animals
Animals, Newborn
assisted reproductive technologies
blastocyst
Blastocyst - physiology
Diploidy
embryo culture
embryogenesis
Embryonic Development
Female
ICSI
injection
intracytoplasmic sperm injection (ICSI)
Karyotyping - veterinary
Male
Mice
Mice, Nude
oocytes
Orchiectomy
Pig
Reproductive technology
Sperm Injections, Intracytoplasmic - veterinary
Spermatogenesis
spermatozoa
Spermatozoa - cytology
Spermatozoa - growth & development
Swine
testes
testicular xenografting
Testis - cytology
Testis - transplantation
tissue transplantation
Transplantation, Heterologous
xenogeneic sperm
Xenografting
xenotransplantation
title Generation of porcine diploid blastocysts after injection of spermatozoa grown in nude mice
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