Evidence map›Paper›PMID 32759216›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

Two distinct pathways of pregranulosa cell differentiation support follicle formation in the mouse ovary.

Wanbao Niu, Allan C Spradling

Open access · hybridAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 149 papers.

0numbers the graph read from it
0cells of the map it votes in
149citing papers in PubMed
31.5field-weighted citation impact, top 1% 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

149 citing papers in PubMed, 293 citations in OpenAlex.

  1. Molecular mechanisms of folliculogenesis and oogenesis.Systems biology in reproductive medicine · 2026
    Review
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  3. Spatiotemporally primed coelomic epithelium and supporting-like cells establish the dual origin of granulosa cells.Proceedings of the National Academy of Sciences of the United States of America · 2026
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89 more citing papers are in PubMed but not listed here.

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

2 authors at 1 institution in 1 country.

Wanbao NiuHoward Hughes Medical Institute Research Laboratories, Carnegie Institution for Science, Baltimore, MD 21218.ORCID 0000-0002-3182-3259
Allan C SpradlingHoward Hughes Medical Institute Research Laboratories, Carnegie Institution for Science, Baltimore, MD 21218; spradling@carnegiescience.edu.
Howard Hughes Medical Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We sequenced more than 52,500 single cells from embryonic day 11.5 (E11.5) postembryonic day 5 (P5) gonads and performed lineage tracing to analyze primordial follicles and wave 1 medullar follicles during mouse fetal and perinatal oogenesis. Germ cells clustered into six meiotic substages, as well as dying/nurse cells. Wnt-expressing bipotential precursors already present at E11.5 are followed at each developmental stage by two groups of ovarian pregranulosa (PG) cells. One PG group, bipotential pregranulosa (BPG) cells, derives directly from bipotential precursors, expresses Foxl2 early, and associates with cysts throughout the ovary by E12.5. A second PG group, epithelial pregranulosa (EPG) cells, arises in the ovarian surface epithelium, ingresses cortically by E12.5 or earlier, expresses Lgr5, but delays robust Foxl2 expression until after birth. By E19.5, EPG cells predominate in the cortex and differentiate into granulosa cells of quiescent primordial follicles. In contrast, medullar BPG cells differentiate along a distinct pathway to become wave 1 granulosa cells. Reflecting their separate somatic cellular lineages, second wave follicles were ablated by diptheria toxin treatment of Lgr5-DTR-EGFP mice at E16.5 while first wave follicles developed normally and supported fertility. These studies provide insights into ovarian somatic cells and a resource to study the development, physiology, and evolutionary conservation of mammalian ovarian follicles.

Indexed as

AnimalsCell DifferentiationCell LineageFemaleForkhead Box Protein L2Granulosa CellsMiceOvarian FolliclePregnancyReceptors, G-Protein-CoupledForkhead Box Protein L2Foxl2 protein, mouseLgr5 protein, mouseReceptors, G-Protein-CoupledfolliclemouseovarypregranulosascRNAseq

Identifiers

PMID32759216
PMCPMC7443898
OpenAlexW3047354140

What OpenQuestion holds

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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 OpenQuestion graph.