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Japanese scientists develop freeze-dried mouse sperm postcards

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Researchers in Japan have developed a option to freeze dry rodent ejaculate between skinny plastic sheets and sticky tape it to postcards, with the samples surviving lengthy journeys to provide wholesome pups.

Excellent news: Scientists will not have to fret about their mouse sperm vials breaking in transit ever once more.

Researchers in Japan have developed a option to freeze dry rodent ejaculate between skinny plastic sheets and sticky tape it to postcards, with the samples surviving lengthy journeys to provide wholesome pups.

The group from the College of Yamanashi have been so delighted with their success one scientist even despatched one other a “Blissful New Yr” card with connected as a present.

“Till now, storing or sending to different researchers of mouse sperm has required a freezing atmosphere similar to liquid nitrogen or dry ice,” Daiyu Ito, first creator of a paper in iScience, advised AFP.

Ito is a PhD pupil at Professor Teruhiko Wakayama’s lab, which had beforehand been the primary group to achieve freeze-drying mammal sperm, and ship it to the Worldwide Area Station to review the consequences of cosmic radiation.

The sperm initially needed to be saved in tiny glass bottles that broke simply, rendering the pattern unusable.

With such pitfalls in thoughts, the group set about engaged on a brand new technique of preservation.

Plastic sheets have been discovered to be a great way to seal the sperm, but it surely was additionally poisonous to the DNA, and the scientists realized they wanted one other materials to go inside.

After testing various types of paper, they found that weighing paper had the highest offspring production rate
After testing numerous varieties of paper, they discovered that weighing paper had the best offspring manufacturing price.

After testing numerous varieties of paper, they discovered that weighing paper had the best offspring manufacturing price.

Utilizing this system, they have been in a position to produce a “sperm e-book” product of postcards with totally different samples, “a totally new idea that nobody has ever considered earlier than,” stated Ito.

“Virtually on daily basis, new genetic modified mouse strains have been created from many laboratories on this planet. Due to this fact, (with) this technique, a thousand mouse strains may be saved and simply managed in solely this one e-book at low value,” he added.

Although the e-book was saved in a freezer at -30 levels Celsius (-22 Fahrenheit), the group discovered the samples survived journeys of as much as three days at room temperature when the postcards have been despatched within the mail—for instance between the College of Yamanashi and the College of Tokyo.

Wakayama, the senior creator of the paper, has beforehand stated he developed freeze-dried mouse sperm for a future wherein people migrate to different planets and have to protect the genetic sources of Earth, together with our personal species.

“It’s now acknowledged that genetic sources are an asset to humanity’s future,” he stated in an announcement.

“The plastic sheet preservation technique on this examine would be the most fitted technique for the protected preservation of a considerable amount of worthwhile genetic sources due to the resistance to breakage and fewer house required for storage.”

The group is presently engaged on a way to freeze dry mammal eggs. “We consider that we are able to do it,” Ito advised AFP.


Scientists mail freeze-dried mouse sperm on a postcard


Extra info:
iScience, Ito et al.: “Mailing viable mouse freeze-dried spermatozoa on postcards” www.cell.com/iscience/fulltext … 2589-0042(21)00783-5 , DOI: 10.1016/j.isci.2021.102815

© 2021 AFP

Quotation:
Japanese scientists develop freeze-dried mouse sperm postcards (2021, August 5)
retrieved 5 August 2021
from https://medicalxpress.com/news/2021-08-japanese-scientists-freeze-dried-mouse-sperm.html

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