Evidence map›Paper›PMID 42309720›Full record

ReviewThe Journal of reproduction and development2026

Reconstitution of germ cell and gonadal development for in vitro gamete production.

Katsuhiko Hayashi, Takashi Yosihno, Kenjiro Shirane

Abstract readReview
In one paragraph

Review in The Journal of reproduction and development, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

3 authors.

Katsuhiko HayashiDepartment of Genome Biology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan.
Takashi YosihnoPremium Research Institute for Human Metaverse Medicine (WPI-PRIMe), Osaka University, Osaka 565-0871, Japan.
Kenjiro ShiraneDepartment of Genome Biology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Germ cell formation involves a unique developmental trajectory in which diploid pluripotent cells are transformed into haploid gametes through a series of tightly regulated processes. This trajectory encompasses fundamental biological events, including extensive epigenetic remodeling, sexual fate determination, and meiotic division. Understanding the molecular and cellular mechanisms governing these processes is a fundamental challenge in reproductive biology and medicine, yet many aspects remain elusive. One long-standing strategy to overcome this limitation has been the establishment of in vitro gametogenesis that recapitulates germ cell development under defined culture conditions. In recent years, advances in stem cell biology have dramatically accelerated the development of such systems, opening new experimental platforms to dissect germ cell development. Beyond their value as research tools, these technologies also hold potential as alternative sources of gametes for animal reproduction and, perhaps, for human applications. In this review, we discuss the historical evolution of in vitro gametogenesis, highlight recent progress in the field, and outline the remaining technical and conceptual challenges.

Indexed as

GametogenesisGerm CellsGonadsAnimalsFemaleHumansGonadogenesisIn vitro gametogenesisSex determination

Identifiers

PMID42309720
PMCPMC13286720

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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 OpenQuestion graph.