Evidence map›Paper›PMID 23493551›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2013

Complete and unidirectional conversion of human embryonic stem cells to trophoblast by BMP4.

Mitsuyoshi Amita, Katsuyuki Adachi, Andrei P Alexenko, Sunilima Sinha, Danny J Schust, Laura C Schulz, R Michael Roberts, Toshihiko Ezashi

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 163 papers.

0numbers the graph read from it
0cells of the map it votes in
163citing papers in PubMed
7.5field-weighted citation impact, top 2% 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

163 citing papers in PubMed, 278 citations in OpenAlex.

  1. Review
  2. Cancers · 2026
    Review
  3. Review
  4. Synthetic embryos: current progress, application and challenges.Reproductive biology and endocrinology : RB&E · 2026
    Review
  5. Article
  6. Article
  7. Review
  8. VGLL1 contributes to both the transcriptome and epigenome of the developing trophoblast compartment.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Review

103 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

8 authors at 3 institutions in 3 countries.

Mitsuyoshi AmitaDivision of Animal Sciences, and Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA.
Katsuyuki Adachi
Andrei P Alexenko
Sunilima Sinha
Danny J Schust
Laura C Schulz
R Michael Roberts
Toshihiko Ezashi
Center for Life Sciences · CNWomen's Health Research Institute · CAInstitute of Animal Sciences · CN

Funding

Pluripotent human stem cells as models for normal and diseased trophoblastR01HD067759 · NICHD · UNIVERSITY OF MISSOURI-COLUMBIA · PI ROBERTS, R. MICHAEL · 2011 to 2015
$1.7M
Pluripotent Stem Cells: Modeling syncytiotrophoblast development and pathogenesisR01HD077108 · NICHD · UNIVERSITY OF MISSOURI-COLUMBIA · PI EZASHI, TOSHIHIKO, SCHUST, DANNY J · 2013 to 2017
$1.7M
NICHD NIH HHS 1R01HD067759NICHD NIH HHS R01 HD067759NICHD NIH HHS R01 HD077108
6 · The paper itself

Abstract

Human ES cells (hESC) exposed to bone morphogenic protein 4 (BMP4) in the absence of FGF2 have become widely used for studying trophoblast development, but the soundness of this model has been challenged by others, who concluded that differentiation was primarily toward mesoderm rather than trophoblast. Here we confirm that hESC grown under the standard conditions on a medium conditioned by mouse embryonic fibroblasts in the presence of BMP4 and absence of FGF2 on a Matrigel substratum rapidly convert to an epithelium that is largely KRT7(+) within 48 h, with minimal expression of mesoderm markers, including T (Brachyury). Instead, they begin to express a series of trophoblast markers, including HLA-G, demonstrate invasive properties that are independent of the continued presence of BMP4 in the medium, and, over time, produce extensive amounts of human chorionic gonadotropin, progesterone, placental growth factor, and placental lactogen. This process of differentiation is not dependent on conditioning of the medium by mouse embryonic fibroblasts and is accelerated in the presence of inhibitors of Activin and FGF2 signaling, which at day 2 provide colonies that are entirely KRT7(+) and in which the majority of cells are transiently CDX2(+). Colonies grown on two chemically defined media, including the one in which BMP4 was reported to drive mesoderm formation, also differentiate at least partially to trophoblast in response to BMP4. The experiments demonstrate that the in vitro BMP4/hESC model is valid for studying the emergence and differentiation of trophoblasts.

Indexed as

ActivinsAnimalsAntigens, DifferentiationBone Morphogenetic Protein 4Cell DifferentiationCell LineCulture Media, ConditionedEmbryonic Stem CellsFibroblast Growth Factor 2HumansKeratin-7MiceSignal TransductionTrophoblastsActivinsAntigens, DifferentiationBMP4 protein, humanBone Morphogenetic Protein 4Culture Media, ConditionedFibroblast Growth Factor 2Keratin-7KRT7 protein, human

Identifiers

PMID23493551
PMCPMC3612666
OpenAlexW2084358775

What OpenQuestion holds

Textmetadata
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.