Evidence map›Paper›PMID 28275724›Full record

ArticleScience advances2017

Mitochondrial metabolic regulation by GRP78.

Manoj Prasad, Kevin J Pawlak, William E Burak, Elizabeth E Perry, Brendan Marshall, Randy M Whittal, Himangshu S Bose

Open access · goldAbstract read
In one paragraph

Article in Science advances, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed
3.9field-weighted citation impact, top 6% 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

57 citing papers in PubMed, 91 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Mitochondria-ER crosstalk via MAMS: Bridging cellular homeostasis and cancer progression.Apoptosis : an international journal on programmed cell death · 2026
    Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. Review
  10. STAR/STARD1: A mitochondrial intermembrane space cholesterol shuttle degraded through mitophagy.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  11. Article
  12. Review
  13. Stress-induced translocation of the endoplasmic reticulum chaperone GRP78/BiP and its impact on human disease and therapy.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  14. Review
  15. Loss ofInternational journal of molecular sciences · 2025
    Article
  16. Lipid metabolism in the adrenal gland.Frontiers in endocrinology · 2025
    Review
  17. Article
  18. Article
  19. Article
  20. Article
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

7 authors at 3 institutions in 2 countries.

Manoj PrasadLaboratory of Biochemistry and Cell Biology, Department of Biomedical Sciences, Mercer University School of Medicine, Savannah, GA 31404, USA.
Kevin J PawlakLaboratory of Biochemistry and Cell Biology, Department of Biomedical Sciences, Mercer University School of Medicine, Savannah, GA 31404, USA.
William E BurakLaboratory of Biochemistry and Cell Biology, Department of Biomedical Sciences, Mercer University School of Medicine, Savannah, GA 31404, USA.; Anderson Cancer Institute, Memorial University Medical Center, Savannah, GA 31404, USA.
Elizabeth E PerryDepartment of Cellular Biology and Anatomy, Augusta University, Augusta, GA 30912, USA.ORCID 0000-0001-9508-5753
Brendan MarshallDepartment of Cellular Biology and Anatomy, Augusta University, Augusta, GA 30912, USA.ORCID 0000-0001-7147-0075
Randy M WhittalDepartment of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
Himangshu S BoseLaboratory of Biochemistry and Cell Biology, Department of Biomedical Sciences, Mercer University School of Medicine, Savannah, GA 31404, USA.; Anderson Cancer Institute, Memorial University Medical Center, Savannah, GA 31404, USA.
Mercer University · USAugusta University · USUniversity of Alberta · CA

Funding

Mechanism of action of steroidogenic acute regulatory protein (StAR)R01HD057876 · NICHD · MERCER UNIVERSITY MACON · PI BOSE, HIMANGSHU S · 2009 to 2013
$1.5M
NICHD NIH HHS R01 HD057876
6 · The paper itself

Abstract

Steroids, essential for mammalian survival, are initiated by cholesterol transport by steroidogenic acute regulatory protein (StAR). Appropriate protein folding is an essential requirement of activity. Endoplasmic reticulum (ER) chaperones assist in folding of cytoplasmic proteins, whereas mitochondrial chaperones fold only mitochondrial proteins. We show that glucose regulatory protein 78 (GRP78), a master ER chaperone, is also present at the mitochondria-associated ER membrane (MAM), where it folds StAR for delivery to the outer mitochondrial membrane. StAR expression and activity are drastically reduced following GRP78 knockdown. StAR folding starts at the MAM region; thus, its cholesterol fostering capacity is regulated by GRP78 long before StAR reaches the mitochondria. In summary, GRP78 is an acute regulator of steroidogenesis at the MAM, regulating the intermediate folding of StAR that is crucial for its activity.

Indexed as

AnimalsCholesterolEndoplasmic ReticulumEndoplasmic Reticulum Chaperone BiPHeat-Shock ProteinsMaleMitochondriaMitochondrial MembranesPhosphoproteinsRatsRats, Sprague-DawleySteroidogenic Acute Regulatory ProteinCholesterolEndoplasmic Reticulum Chaperone BiPGRP78 protein, ratHeat-Shock ProteinsPhosphoproteinsSteroidogenic Acute Regulatory ProteinGRP78mitochondriamitochondria-associated ER membranemitochondrial chaperonesStARSteroids

Identifiers

PMID28275724
PMCPMC5325540
OpenAlexW2589213388

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.