Evidence map›Paper›PMID 22878401›Full record

ArticleEndocrinology2012

Hypoxia induces autophagy in primary human trophoblasts.

Baosheng Chen, Mark S Longtine, D Michael Nelson

Open access · bronzeAbstract read
In one paragraph

Article in Endocrinology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

39 citing papers in PubMed, 77 citations in OpenAlex.

  1. Trial
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  9. Review
  10. Research Progress of Ribosomal Proteins in Reproductive Development.International journal of molecular sciences · 2024
    Review
  11. Review
  12. Article
  13. Review
  14. Review
  15. Review
  16. Article
  17. Insight of Autophagy in Spontaneous Miscarriage.International journal of biological sciences · 2022
    Review
  18. Review
  19. Article
  20. Review
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 at 1 institution in 1 country.

Baosheng ChenDepartment of Obstetrics and Gynecology, Washington University School of Medicine, St Louis, Missouri 63110, USA. chenb@wudosis.wustl.edu
Mark S Longtine
D Michael Nelson
Washington University in St. Louis · US

Funding

PLACENTAL TROPHOBLAST, EICOSANOIDS, AND PREECLAMPSIAR01HD029190 · NICHD · WASHINGTON UNIVERSITY · PI NELSON, DONALD MICHAEL · 1994 to 2011
$2.3M
NICHD NIH HHS R01 HD029190NICHD NIH HHS R01 HD-29190
6 · The paper itself

Abstract

Autophagy is a highly regulated and dynamic process that maintains cellular homeostasis and plays a prosurvival role in most cells. Although hypoxia has been shown to induce apoptosis in placental trophoblasts, the hypoxic effect on autophagy has not been studied. We hypothesized that autophagy plays a prosurvival role in the placental trophoblasts by antagonizing hypoxia-induced apoptosis. Our data show that the expression of Light chain 3-II (LC3-II), an autophagic marker and cleaved poly(ADP-ribose) polymerase, an apoptosis marker, are inversely related in cultured trophoblasts. Exposure to rapamycin or hypoxia inactivated mammalian target of rapamycin, as reflected by reduced phosphorylation of ribosomal protein S6, indicating that mammalian target of rapamycin regulates autophagy in cultured cytotrophoblasts. Bafilomycin prevented the degradation of cargo and increased LC3-II and p62 in cytotrophoblasts exposed to hypoxia, revealing enhanced autophagic flux. Importantly, bafilomycin enhanced expression of autophagy-related protein 7 (Atg7), parallel to the increased apoptosis measured by cleaved poly(ADP-ribose) polymerase. LY294002, a phosphatidylinositol 3-kinase inhibitor, increased apoptosis in the trophoblasts under hypoxia or standard conditions. Silencing of Atg7 decreased both apoptosis and LC3-II in the trophoblasts, suggesting a dual role of Atg7 in both autophagy and apoptosis. We conclude that there is a cross talk between autophagy and apoptosis in the placental trophoblasts; autophagy plays a prosurvival role and Atg7 has roles in both autophagy and apoptosis under hypoxia.

Indexed as

ApoptosisAutophagyAutophagy-Related Protein 7Cell HypoxiaCells, CulturedEnzyme InhibitorsHumansMacrolidesMicrotubule-Associated ProteinsPhosphoinositide-3 Kinase InhibitorsSirolimusTrophoblastsUbiquitin-Activating EnzymesATG7 protein, humanAutophagy-Related Protein 7bafilomycin AEnzyme InhibitorsMacrolidesMAP1LC3A protein, humanMicrotubule-Associated ProteinsPhosphoinositide-3 Kinase InhibitorsSirolimusUbiquitin-Activating Enzymes

Identifiers

PMID22878401
PMCPMC3512007
OpenAlexW2067040928

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.