Evidence map›Paper›PMID 32659785›Full record

ArticleBlood2020

NCOA4 is regulated by HIF and mediates mobilization of murine hepatic iron stores after blood loss.

Xiuqi Li, Larisa Lozovatsky, Abitha Sukumaran, Luis Gonzalez, Anisha Jain, Dong Liu, Nadia Ayala-Lopez, Karin E Finberg

Open access · bronzeAbstract read
In one paragraph

Article in Blood, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 1 pooled it
3.1field-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

50 citing papers in PubMed, 1 synthesis or guideline pooled it, 71 citations in OpenAlex.

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  15. The impact of YTHDF2-mediated NCOA4 methylation on myocardial ferroptosis.Apoptosis : an international journal on programmed cell death · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Xiuqi LiDepartment of Pathology and.
Larisa LozovatskyDepartment of Pathology and.
Abitha SukumaranDepartment of Pathology and.
Luis GonzalezDepartment of Pathology and.
Anisha JainDepartment of Pathology and.
Dong LiuDepartment of Laboratory Medicine, Yale School of Medicine, New Haven, CT.
Nadia Ayala-LopezDepartment of Laboratory Medicine, Yale School of Medicine, New Haven, CT.
Karin E FinbergDepartment of Pathology and.
Yale University · US

Funding

MEDICAL SCIENTIST TRAINING PROGRAMT32GM007205 · NIGMS · YALE UNIVERSITY · PI KAZMIERCZAK, BARBARA I · 1985 to 2019
$42.9M
Yale Liver CenterP30DK034989 · NIDDK · YALE UNIVERSITY · PI YASUKO IWAKIRI · 1986 to 2026
$31.1M
Yale Cooperative Hematology Specialized Core CenterU54DK106857 · NIDDK · YALE UNIVERSITY · PI JOHN HWA, Diane S Krause · 2015 to 2026
$9.7M
IMMUNOHEMATOLOGY/TRANSFUSION MEDICINE RESEARCH TRAININGT32HL007974 · NHLBI · YALE UNIVERSITY · PI JEANNE E HENDRICKSON, Diane S Krause · 2001 to 2026
$8.1M
NHLBI NIH HHS T32 HL007974NIDDK NIH HHS P30 DK034989NIDDK NIH HHS U54 DK106857NIGMS NIH HHS T32 GM007205
6 · The paper itself

Abstract

The mechanisms by which phlebotomy promotes the mobilization of hepatic iron stores are not well understood. NCOA4 (nuclear receptor coactivator 4) is a widely expressed intracellular protein previously shown to mediate the autophagic degradation of ferritin. Here, we investigate a local requirement for NCOA4 in the regulation of hepatic iron stores and examine mechanisms of NCOA4 regulation. Hepatocyte-targeted Ncoa4 knockdown in nonphlebotomized mice had only modest effects on hepatic ferritin subunit levels and nonheme iron concentration. After phlebotomy, mice with hepatocyte-targeted Ncoa4 knockdown exhibited anemia and hypoferremia similar to control mice with intact Ncoa4 regulation but showed a markedly impaired ability to lower hepatic ferritin subunit levels and hepatic nonheme iron concentration. This impaired hepatic response was observed even when dietary iron was limited. In both human and murine hepatoma cell lines, treatment with chemicals that stabilize hypoxia inducible factor (HIF), including desferrioxamine, cobalt chloride, and dimethyloxalylglycine, raised NCOA4 messenger RNA. This NCOA4 messenger RNA induction occurred within 3 hours, preceded a rise in NCOA4 protein, and was attenuated in the setting of dual HIF-1α and HIF-2α knockdown. In summary, we show for the first time that NCOA4 plays a local role in facilitating iron mobilization from the liver after blood loss and that HIF regulates NCOA4 expression in cells of hepatic origin. Because the prolyl hydroxylases that regulate HIF stability are oxygen- and iron-dependent enzymes, our findings suggest a novel mechanism by which hypoxia and iron deficiency may modulate NCOA4 expression to impact iron homeostasis.

Indexed as

AnimalsBasic Helix-Loop-Helix ProteinsCell LineEndothelial PAS Domain-Containing Protein 1FemaleGene Expression RegulationGene Knockdown TechniquesHemorrhageHepatocytesHumansHypoxia-Inducible Factor 1, alpha SubunitIronLiverMiceNuclear Receptor CoactivatorsBasic Helix-Loop-Helix ProteinsEndothelial PAS Domain-Containing Protein 1Hif1a protein, mouseHypoxia-Inducible Factor 1, alpha SubunitIronNcoA4 protein, mouseNuclear Receptor Coactivators

Identifiers

PMID32659785
PMCPMC7735158
OpenAlexW3043762653

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.