Evidence map›Paper›PMID 34406367›Full record

ArticleClinical science (London, England : 1979)2021

Placenta-specific Slc38a2/SNAT2 knockdown causes fetal growth restriction in mice.

Owen R Vaughan, Katarzyna Maksym, Elena Silva, Kenneth Barentsen, Russel V Anthony, Thomas L Brown, Sara L Hillman, Rebecca Spencer, Anna L David, Fredrick J Rosario and 2 more

Open access · hybridAbstract read
In one paragraph

Article in Clinical science (London, England : 1979), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
5.0field-weighted citation impact, top 4% 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

35 citing papers in PubMed, 44 citations in OpenAlex.

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  15. Trophoblast-specific overexpression of adiponectin receptor 2 causes fetal growth restriction in pregnant mice.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2024
    Article
  16. Dietary Supplementation with 25-Hydroxyvitamin DAntioxidants (Basel, Switzerland) · 2024
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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

12 authors at 4 institutions in 2 countries.

Owen R VaughanDepartment of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, U.S.A.ORCID 0000-0001-7537-3264
Katarzyna MaksymDepartment of Maternal and Fetal Medicine, Elizabeth Garrett Anderson Institute for Women's Health, University College London WC1E 6HX, U.K.
Elena SilvaDepartment of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, U.S.A.
Kenneth BarentsenDepartment of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, U.S.A.
Russel V AnthonyDepartment of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Colorado State University, Fort Collins, CO 80523, U.S.A.
Thomas L BrownDepartment of Neuroscience, Cell Biology and Physiology, Wright State University Boonshoft School of Medicine, Dayton, OH 45435, U.S.A.
Sara L HillmanDepartment of Maternal and Fetal Medicine, Elizabeth Garrett Anderson Institute for Women's Health, University College London WC1E 6HX, U.K.
Rebecca SpencerDepartment of Maternal and Fetal Medicine, Elizabeth Garrett Anderson Institute for Women's Health, University College London WC1E 6HX, U.K.
Anna L DavidDepartment of Maternal and Fetal Medicine, Elizabeth Garrett Anderson Institute for Women's Health, University College London WC1E 6HX, U.K.
Fredrick J RosarioDepartment of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, U.S.A.
Theresa L PowellDepartment of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, U.S.A.
Thomas JanssonDepartment of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, U.S.A.
University College Hospital · GBUniversity of Colorado Anschutz Medical Campus · USColorado State University · USWright State University · US

Funding

Trophoblast mTOR: a critical hub linking maternal nutrient supply to placental function, fetal growth and fetal islet functionR01HD068370 · NICHD · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI JANSSON, THOMAS, ROSARIO-JOSEPH, FREDRICK · 2011 to 2024
$4.1M
Placental adiponectin signaling and fetal programming in maternal obesityR01HD065007 · NICHD · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI JANSSON, THOMAS, POWELL, THERESA L · 2011 to 2022
$3.8M
NICHD NIH HHS R01 HD065007NICHD NIH HHS R01 HD068370
6 · The paper itself

Abstract

Fetal growth restriction (FGR) is a complication of pregnancy that reduces birth weight, markedly increases infant mortality and morbidity and is associated with later-life cardiometabolic disease. No specific treatment is available for FGR. Placentas of human FGR infants have low abundance of sodium-coupled neutral amino acid transporter 2 (Slc38a2/SNAT2), which supplies the fetus with amino acids required for growth. We determined the mechanistic role of placental Slc38a2/SNAT2 deficiency in the development of restricted fetal growth, hypothesizing that placenta-specific Slc38a2 knockdown causes FGR in mice. Using lentiviral transduction of blastocysts with a small hairpin RNA (shRNA), we achieved 59% knockdown of placental Slc38a2, without altering fetal Slc38a2 expression. Placenta-specific Slc38a2 knockdown reduced near-term fetal and placental weight, fetal viability, trophoblast plasma membrane (TPM) SNAT2 protein abundance, and both absolute and weight-specific placental uptake of the amino acid transport System A tracer, 14C-methylaminoisobutyric acid (MeAIB). We also measured human placental SLC38A2 gene expression in a well-defined term clinical cohort and found that SLC38A2 expression was decreased in late-onset, but not early-onset FGR, compared with appropriate for gestational age (AGA) control placentas. The results demonstrate that low placental Slc38a2/SNAT2 causes FGR and could be a target for clinical therapies for late-onset FGR.

Indexed as

Fetal DevelopmentPlacentationAmino Acid Transport System AAnimalsCase-Control StudiesFemaleFetal Growth RetardationGene Expression Regulation, DevelopmentalGene Knockdown TechniquesPlacentaPregnancyProspective StudiesRNA InterferenceAmino Acid Transport System ASLC38A2 protein, humanSlc38a2 protein, mouseamino acid transport system Afetal growth restrictionlentivirusmaternal-fetal exchangeMeAIBsyncytiotrophoblast

Identifiers

PMID34406367
PMCPMC8410983
OpenAlexW3195211483

What OpenQuestion holds

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Registered trials

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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.