Evidence map›Paper›PMID 22045566›Full record

ArticleThe Journal of clinical investigation2011

Minihepcidins are rationally designed small peptides that mimic hepcidin activity in mice and may be useful for the treatment of iron overload.

Gloria C Preza, Piotr Ruchala, Rogelio Pinon, Emilio Ramos, Bo Qiao, Michael A Peralta, Shantanu Sharma, Alan Waring, Tomas Ganz, Elizabeta Nemeth

Abstract read
In one paragraph

Article in The Journal of clinical investigation, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 119 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
119citing papers in PubMed, 1 pooled it
9.0field-weighted citation impact, top 2% 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

119 citing papers in PubMed, 1 synthesis or guideline pooled it, 229 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Iron Homeostasis and Liver Diseases.Journal of cellular and molecular medicine · 2026
    Review
  5. Review
  6. Review
  7. Article
  8. Review
  9. Article
  10. Review
  11. Review
  12. Article
  13. Current Landscape of Hepcidin Therapeutics.Advances in experimental medicine and biology · 2025
    Review
  14. Review
  15. In vitro reconstitution of transition metal transporters.The Journal of biological chemistry · 2024
    Review
  16. Article
  17. Iron Dysregulation in Cardiovascular Diseases.Reviews in cardiovascular medicine · 2024
    Review
  18. Review
  19. Article
  20. Article

59 more citing papers are in PubMed but not listed here.

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

10 authors at 3 institutions in 1 country.

Gloria C PrezaDepartment of Pathology, UCLA, Los Angeles, California, USA.
Piotr Ruchala
Rogelio Pinon
Emilio Ramos
Bo Qiao
Michael A Peralta
Shantanu Sharma
Alan Waring
Tomas Ganz
Elizabeta Nemeth
University of California, Los Angeles · USCalifornia Institute of Technology · USColumbia University · US

Funding

The role of erythroferrone in iron homeostasis and in iron-loading anemiasR01DK065029 · NIDDK · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI GANZ, TOMAS · 2004 to 2017
$4.9M
The Hepcidin-Ferroportin Axis in Anemia of Inflammation: Mechanisms and TargetsR01DK082717 · NIDDK · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI NEMETH, ELIZABETA · 2008 to 2012
$1.6M
NIDDK NIH HHS R01 DK 065029NIDDK NIH HHS R01 DK065029NIDDK NIH HHS R01 DK 082717NIDDK NIH HHS R01 DK082717
6 · The paper itself

Abstract

Iron overload is the hallmark of hereditary hemochromatosis and a complication of iron-loading anemias such as β-thalassemia. Treatment can be burdensome and have significant side effects, and new therapeutic options are needed. Iron overload in hereditary hemochromatosis and β-thalassemia intermedia is caused by hepcidin deficiency. Although transgenic hepcidin replacement in mouse models of these diseases prevents iron overload or decreases its potential toxicity, natural hepcidin is prohibitively expensive for human application and has unfavorable pharmacologic properties. Here, we report the rational design of hepcidin agonists based on the mutagenesis of hepcidin and the hepcidin-binding region of ferroportin and computer modeling of their docking. We identified specific hydrophobic/aromatic residues required for hepcidin-ferroportin binding and obtained evidence in vitro that a thiol-disulfide interaction between ferroportin C326 and the hepcidin disulfide cage may stabilize binding. Guided by this model, we showed that 7–9 N-terminal amino acids of hepcidin, including a single thiol cysteine, comprised the minimal structure that retained hepcidin activity, as shown by the induction of ferroportin degradation in reporter cells. Further modifications to increase resistance to proteolysis and oral bioavailability yielded minihepcidins that, after parenteral or oral administration to mice, lowered serum iron levels comparably to those after parenteral native hepcidin. Moreover, liver iron concentrations were lower in mice chronically treated with minihepcidins than those in mice treated with solvent alone. Minihepcidins may be useful for the treatment of iron overload disorders.

Indexed as

Amino Acid SequenceAmino Acid SubstitutionAnimalsAntimicrobial Cationic PeptidesBinding SitesCation Transport ProteinsComputer SimulationCysteineDrug DesignDrug Evaluation, PreclinicalFerroportinHepcidinsHumansHydrophobic and Hydrophilic InteractionsIronIron OverloadAntimicrobial Cationic PeptidesCation Transport ProteinsCysteineFerroportinHAMP protein, humanHamp protein, mouseHepcidinsIronPeptide Fragments

Identifiers

PMID22045566
PMCPMC3225996
OpenAlexW2146444665

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.