Evidence map›Paper›PMID 21620137›Full record

ArticleCell2011

An intercellular heme-trafficking protein delivers maternal heme to the embryo during development in C. elegans.

Caiyong Chen, Tamika K Samuel, Jason Sinclair, Harry A Dailey, Iqbal Hamza

Open access · bronzeAbstract read
In one paragraph

Article in Cell, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
1.3field-weighted citation impact, top 22% 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

43 citing papers in PubMed, 58 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Cecytb-2, a CytochromeBiomolecules · 2025
    Article
  5. Article
  6. Article
  7. Single-tissue proteomics inProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  8. Article
  9. Review
  10. Review
  11. Live or death in cells: from micronutrition metabolism to cell fate.Frontiers in cell and developmental biology · 2023
    Review
  12. Article
  13. Molecular Mechanisms of Iron and Heme Metabolism.Annual review of nutrition · 2022
    Review
  14. Article
  15. Review
  16. Review
  17. Review
  18. Review
  19. The nutritional requirements ofGenes & nutrition · 2019
    Review
  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

5 authors at 2 institutions in 1 country.

Caiyong ChenDepartment of Animal & Avian Sciences and Department of Cell Biology & Molecular Genetics, University of Maryland, College Park, MD 20742, USA.
Tamika K Samuel
Jason Sinclair
Harry A Dailey
Iqbal Hamza
University of Maryland, College Park · USUniversity of Georgia · US

Funding

The Biological Role of Heme in NutritionR01DK074797 · NIDDK · UNIV OF MARYLAND, COLLEGE PARK · PI Iqbal Hamza · 2006 to 2026
$5.4M
TERMINAL HEME SYNTHETIC ENZYMESR01DK032303 · NIDDK · UNIVERSITY OF GEORGIA (UGA) · PI DAILEY, HARRY A · 1986 to 2010
$2.4M
Terminal steps in Heme BiosynthesisR56DK032303 · NIDDK · UNIVERSITY OF GEORGIA · PI DAILEY, HARRY A · 2010 to 2010
$175k
NIDDK NIH HHS R01 DK032303NIDDK NIH HHS R01 DK074797NIDDK NIH HHS R01DK74797NIDDK NIH HHS R56 DK032303
6 · The paper itself

Abstract

Extracellular free heme can intercalate into membranes and promote damage to cellular macromolecules. Thus it is likely that specific intercellular pathways exist for the directed transport, trafficking, and delivery of heme to cellular destinations, although none have been found to date. Here we show that Caenorhabditis elegans HRG-3 is required for the delivery of maternal heme to developing embryos. HRG-3 binds heme and is exclusively secreted by maternal intestinal cells into the interstitial fluid for transport of heme to extraintestinal cells, including oocytes. HRG-3 deficiency results either in death during embryogenesis or in developmental arrest immediately post-hatching-phenotypes that are fully suppressed by maternal but not zygotic hrg-3 expression. Our results establish a role for HRG-3 as an intercellular heme-trafficking protein.

Indexed as

AnimalsAnimals, Genetically ModifiedCaenorhabditis elegansGene Expression Regulation, DevelopmentalGenes, ReporterHemeHemeproteinsIntestinal MucosaMutationPhenotypeProtein TransportSecretory PathwayHemeHemeproteins

Identifiers

PMID21620137
PMCPMC3104245
OpenAlexW2088195228

What OpenQuestion holds

Textmetadata
LicenceTDM
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.