Evidence map›Paper›PMID 36319672›Full record

ArticleScientific reports2022

Production of mouse offspring from zygotes fertilized with freeze-dried spermatids.

Sayaka Wakayama, Daiyu Ito, Masatoshi Ooga, Teruhiko Wakayama

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.4field-weighted citation impact, top 19% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 9 citations in OpenAlex.

  1. Review
  2. Article
  3. Freeze-Drying and Room Temperature Preservation of Mammalian Sperm.Methods in molecular biology (Clifton, N.J.) · 2026
    Article
  4. Article
  5. Can Humanity Thrive Beyond the Galaxy?The Journal of reproduction and development · 2025
    Review
  6. Article
  7. Article
  8. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Sayaka WakayamaFaculty of Life and Environmental Science, University of Yamanashi, Kofu, 400-8510, Japan. sayakaw@yamanashi.ac.jp.
Daiyu ItoFaculty of Life and Environmental Science, University of Yamanashi, Kofu, 400-8510, Japan.
Masatoshi OogaFaculty of Life and Environmental Science, University of Yamanashi, Kofu, 400-8510, Japan.
Teruhiko WakayamaFaculty of Life and Environmental Science, University of Yamanashi, Kofu, 400-8510, Japan. twakayama@yamanashi.ac.jp.
University of Yamanashi · JP

Funding

Canon Foundation M20-0008Japan Society for the Promotion of Science 15KT0086Japan Society for the Promotion of Science 17K08134Takahashi Industrial and Economic Research Foundation 189
6 · The paper itself

Abstract

Mouse cloning by nuclear transfer using freeze-drying (FD) somatic cells is now possible, but the success rate is significantly lower than that of FD spermatozoa. Because spermatozoa, unlike somatic cells, are haploid cells with hardened nuclei due to protamine, the factors responsible for their tolerance to FD treatment remain unclear. In this study, we attempt to produce offspring from FD spermatid, a haploid sperm progenitor cell whose nuclei, like somatic cells, have not yet been replaced by protamine. We developed a method for collecting FD spermatids from testicular suspension. Despite the significantly lower success rate than that of FD spermatozoa, healthy offspring were obtained when FD spermatids were injected into oocytes. Offspring were also obtained from FD spermatids derived from immature male mice that had not yet produced spermatozoa. These results suggest that nuclear protaminization, rather than haploid nuclei, is one of the key processes responsible for tolerance to FD treatment.

Indexed as

Semen PreservationSpermatidsAnimalsFreeze DryingMaleMiceOocytesProtaminesSemenSpermatozoaZygoteProtamines

Identifiers

PMID36319672
PMCPMC9626645
OpenAlexW4307825990

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.