{"title":"用胰蛋白酶去除精子尾部并预先激活卵母细胞,促进小鼠和大鼠卵浆内单精子注射。","authors":"Kohei Torikai, Kazuma Shimizu, Hiroaki Nagatomo, Mariko Kasai, Megumi Kato-Itoh, Yuko Kamada, Ikue Shibasaki, Hyojung Jeon, Riko Kikuchi, Sayaka Wakayama, Fabian Suchy, Hiromitsu Nakauchi, Teruhiko Wakayama, Eiji Mizutani","doi":"10.1262/jrd.2022-065","DOIUrl":null,"url":null,"abstract":"<p><p>We examined various methods to enhance the accessibility of intracytoplasmic sperm injection (ICSI) technology to more users by making the technique easier, more efficient, and practical. First, the methods for artificially removing the mouse sperm tail were evaluated. Trypsin treatment was found to efficiently remove the sperm tails. The resultant sperm cells had a lower oocyte activation capacity; however, the use of activated oocytes resulted in the same fecundity as that of fresh, untreated sperm. Pre-activated oocytes were more resistant to physical damage, showed higher survival rates, and required less time per injection. Testing this method in rats yielded similar results, although the oocyte activation method was different. Remarkably, this method resulted in higher birth rates of rat progeny than with conventional methods of rat ICSI. Our method thereby streamlines mouse and rat ICSI, making it more accessible to laboratories across many disciplines.</p>","PeriodicalId":16942,"journal":{"name":"Journal of Reproduction and Development","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2023-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/42/f3/jrd-69-048.PMC9939287.pdf","citationCount":"1","resultStr":"{\"title\":\"Removal of sperm tail using trypsin and pre-activation of oocyte facilitates intracytoplasmic sperm injection in mice and rats.\",\"authors\":\"Kohei Torikai, Kazuma Shimizu, Hiroaki Nagatomo, Mariko Kasai, Megumi Kato-Itoh, Yuko Kamada, Ikue Shibasaki, Hyojung Jeon, Riko Kikuchi, Sayaka Wakayama, Fabian Suchy, Hiromitsu Nakauchi, Teruhiko Wakayama, Eiji Mizutani\",\"doi\":\"10.1262/jrd.2022-065\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>We examined various methods to enhance the accessibility of intracytoplasmic sperm injection (ICSI) technology to more users by making the technique easier, more efficient, and practical. First, the methods for artificially removing the mouse sperm tail were evaluated. Trypsin treatment was found to efficiently remove the sperm tails. The resultant sperm cells had a lower oocyte activation capacity; however, the use of activated oocytes resulted in the same fecundity as that of fresh, untreated sperm. Pre-activated oocytes were more resistant to physical damage, showed higher survival rates, and required less time per injection. Testing this method in rats yielded similar results, although the oocyte activation method was different. Remarkably, this method resulted in higher birth rates of rat progeny than with conventional methods of rat ICSI. Our method thereby streamlines mouse and rat ICSI, making it more accessible to laboratories across many disciplines.</p>\",\"PeriodicalId\":16942,\"journal\":{\"name\":\"Journal of Reproduction and Development\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2023-02-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/42/f3/jrd-69-048.PMC9939287.pdf\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Reproduction and Development\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1262/jrd.2022-065\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"AGRICULTURE, DAIRY & ANIMAL SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Reproduction and Development","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1262/jrd.2022-065","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRICULTURE, DAIRY & ANIMAL SCIENCE","Score":null,"Total":0}
Removal of sperm tail using trypsin and pre-activation of oocyte facilitates intracytoplasmic sperm injection in mice and rats.
We examined various methods to enhance the accessibility of intracytoplasmic sperm injection (ICSI) technology to more users by making the technique easier, more efficient, and practical. First, the methods for artificially removing the mouse sperm tail were evaluated. Trypsin treatment was found to efficiently remove the sperm tails. The resultant sperm cells had a lower oocyte activation capacity; however, the use of activated oocytes resulted in the same fecundity as that of fresh, untreated sperm. Pre-activated oocytes were more resistant to physical damage, showed higher survival rates, and required less time per injection. Testing this method in rats yielded similar results, although the oocyte activation method was different. Remarkably, this method resulted in higher birth rates of rat progeny than with conventional methods of rat ICSI. Our method thereby streamlines mouse and rat ICSI, making it more accessible to laboratories across many disciplines.
期刊介绍:
Journal of Reproduction and Development (JRD) is the
official journal of the Society for Reproduction and Development,
published bimonthly, and welcomes original articles. JRD
provides free full-text access of all the published articles on
the web. The functions of the journal are managed by Editorial
Board Members, such as the Editor-in-Chief, Co-Editor-inChief, Managing Editors and Editors. All manuscripts are
peer-reviewed critically by two or more reviewers. Acceptance
is based on scientific content and presentation of the materials.
The Editors select reviewers and correspond with authors. Final
decisions about acceptance or rejection of manuscripts are made
by the Editor-in-Chief and Co-Editor-in-Chief.