Evidence map›Paper›PMID 20836886›Full record

ArticleStem cell research & therapy2010

The pregnancy hormones human chorionic gonadotropin and progesterone induce human embryonic stem cell proliferation and differentiation into neuroectodermal rosettes.

Miguel J Gallego, Prashob Porayette, Maria M Kaltcheva, Richard L Bowen, Sivan Vadakkadath Meethal, Craig S Atwood

Open access · goldAbstract read
In one paragraph

Article in Stem cell research & therapy, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

16 citing papers in PubMed, 44 citations in OpenAlex.

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  13. Uphill battle: the saga of hCG research that led to a paradigm shift.The Indian journal of medical research · 2014
    Article
  14. Article
  15. Extragonadal actions of chorionic gonadotropin.Reviews in endocrine & metabolic disorders · 2011
    Review
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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

6 authors at 4 institutions in 2 countries.

Miguel J GallegoGeriatric Research, Education and Clinical Center, Veterans Administration Hospital and Department of Medicine, University of Wisconsin-Madison School of Medicine and Public Health, 2500 Highland Avenue, Madison, WI 53705, USA. csa@medicine.wisc.edu
Prashob Porayette
Maria M Kaltcheva
Richard L Bowen
Sivan Vadakkadath Meethal
Craig S Atwood
Geriatric Research Education and Clinical Center · USUniversity of Wisconsin–Madison · USCornell University · USDuke University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe physiological signals that direct the division and differentiation of the zygote to form a blastocyst, and subsequent embryonic stem cell division and differentiation during early embryogenesis, are unknown. Although a number of growth factors, including the pregnancy-associated hormone human chorionic gonadotropin (hCG) are secreted by trophoblasts that lie adjacent to the embryoblast in the blastocyst, it is not known whether these growth factors directly signal human embryonic stem cells (hESCs).

methodsHere we used hESCs as a model of inner cell mass differentiation to examine the hormonal requirements for the formation of embryoid bodies (EB's; akin to blastulation) and neuroectodermal rosettes (akin to neurulation).

resultsWe found that hCG promotes the division of hESCs and their differentiation into EB's and neuroectodermal rosettes. Inhibition of luteinizing hormone/chorionic gonadotropin receptor (LHCGR) signaling suppresses hESC proliferation, an effect that is reversed by treatment with hCG. hCG treatment rapidly upregulates steroidogenic acute regulatory protein (StAR)-mediated cholesterol transport and the synthesis of progesterone (P4). hESCs express P4 receptor A, and treatment of hESC colonies with P4 induces neurulation, as demonstrated by the expression of nestin and the formation of columnar neuroectodermal cells that organize into neural tubelike rosettes. Suppression of P4 signaling by withdrawing P4 or treating with the P4-receptor antagonist RU-486 inhibits the differentiation of hESC colonies into EB's and rosettes.

conclusionsOur findings indicate that hCG signaling via LHCGR on hESC promotes proliferation and differentiation during blastulation and neurulation. These findings suggest that trophoblastic hCG secretion and signaling to the adjacent embryoblast could be the commencement of trophic support by placental tissues in the growth and development of the human embryo.

Indexed as

Biological TransportCell DifferentiationCell ProliferationCells, CulturedCholesterolChorionic GonadotropinEmbryonic Stem CellsFemaleHormone AntagonistsHumansMifepristoneNestinNeural PlateNeurulationPhosphoproteinsPregnancyCholesterolChorionic GonadotropinHormone AntagonistsMifepristoneNestinPhosphoproteinsProgesteroneprogesterone receptor AReceptors, LHReceptors, ProgesteroneSteroidogenic Acute Regulatory Protein

Identifiers

PMID20836886
PMCPMC2983441
OpenAlexW2118787589

What OpenQuestion 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 OpenQuestion graph.