Evidence map›Paper›PMID 22682227›Full record

ArticleCell metabolism2012

Hepcidin-induced endocytosis of ferroportin is dependent on ferroportin ubiquitination.

Bo Qiao, Priscilla Sugianto, Eileen Fung, Alejandro Del-Castillo-Rueda, Maria-Josefa Moran-Jimenez, Tomas Ganz, Elizabeta Nemeth

Open access · bronzeAbstract read
In one paragraph

Article in Cell metabolism, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 179 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
179citing papers in PubMed, 1 pooled it
12.4field-weighted citation impact, top 1% 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

179 citing papers in PubMed, 1 synthesis or guideline pooled it, 323 citations in OpenAlex.

  1. Pooled it
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  9. mBio · 2026
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  14. Autophagy regulation of pyroptosis and ferroptosis: a new strategy for colorectal cancer treatment.Apoptosis : an international journal on programmed cell death · 2026
    Review
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119 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

7 authors at 3 institutions in 2 countries.

Bo QiaoDepartment of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA.
Priscilla Sugianto
Eileen Fung
Alejandro Del-Castillo-Rueda
Maria-Josefa Moran-Jimenez
Tomas Ganz
Elizabeta Nemeth
University of California, Los Angeles · USHospital General Universitario Gregorio Marañón · ESResearch Institute Hospital 12 de Octubre · ES

Funding

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 082717NIDDK NIH HHS R01 DK082717
6 · The paper itself

Abstract

Ferroportin exports iron into plasma from absorptive enterocytes, erythrophagocytosing macrophages, and hepatic stores. The hormone hepcidin controls cellular iron export and plasma iron concentrations by binding to ferroportin and causing its internalization and degradation. We explored the mechanism of hepcidin-induced endocytosis of ferroportin, the key molecular event in systemic iron homeostasis. Hepcidin binding caused rapid ubiquitination of ferroportin in cell lines overexpressing ferroportin and in murine bone marrow-derived macrophages. No hepcidin-dependent ubiquitination was observed in C326S ferroportin mutant which does not bind hepcidin. Substitutions of lysines between residues 229 and 269 in the third cytoplasmic loop of ferroportin prevented hepcidin-dependent ubiquitination and endocytosis of ferroportin, and promoted cellular iron export even in the presence of hepcidin. The human ferroportin mutation K240E, previously associated with clinical iron overload, caused hepcidin resistance in vitro by interfering with ferroportin ubiquitination. Our study demonstrates that ubiquitination is the functionally relevant signal for hepcidin-induced ferroportin endocytosis.

Indexed as

EndocytosisProtein Processing, Post-TranslationalAmino Acid MotifsAmino Acid SubstitutionAntimicrobial Cationic PeptidesCation Transport ProteinsFerroportinHEK293 CellsHepcidinsHumansIronMutagenesis, Site-DirectedProtein BindingProtein TransportUbiquitinationAntimicrobial Cationic PeptidesCation Transport ProteinsFerroportinHAMP protein, humanHepcidinsIron

Identifiers

PMID22682227
PMCPMC3372862
OpenAlexW2020932850

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.