Cited by 99Iron Metabolism and DisordersHemoglobinopathies and Related DisordersHemoglobin structure and function

Oral ferroportin inhibitor ameliorates ineffective erythropoiesis in a model of β-thalassemia

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Manolova, Vania, Nyffenegger, Naja, Flace, Anna, Altermatt, Patrick, Varol, Ahmet, Doucerain, Cédric, Sundstrom, Hanna, Dürrenberger, Franz·2019·Journal of Clinical Investigation

Abstract

β-Thalassemia is a genetic anemia caused by partial or complete loss of β-globin synthesis, leading to ineffective erythropoiesis and RBCs with a short life span. Currently, there is no efficacious oral medication modifying anemia for patients with β-thalassemia. The inappropriately low levels of the iron regulatory hormone hepcidin enable excessive iron absorption by ferroportin, the unique cellular iron exporter in mammals, leading to organ iron overload and associated morbidities. Correction of unbalanced iron absorption and recycling by induction of hepcidin synthesis or treatment with hepcidin mimetics ameliorates β-thalassemia. However, hepcidin modulation or replacement strategies currently in clinical development all require parenteral drug administration. We identified oral ferroportin inhibitors by screening a library of small molecular weight compounds for modulators of ferroportin internalization. Restricting iron availability by VIT-2763, the first clinical stage oral ferroportin inhibitor, ameliorated anemia and the dysregulated iron homeostasis in the Hbbth3/+ mouse model of β-thalassemia intermedia. VIT-2763 not only improved erythropoiesis but also corrected the proportions of myeloid precursors in spleens of Hbbth3/+ mice. VIT-2763 is currently being developed as an oral drug targeting ferroportin for the treatment of β-thalassemia.

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Crossref · 10.1172/jci129382

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  • The potentiation of hepcidin activity by iron may have immediate consequences for the development of hepcidin mimetics currently in clinical trials.

    “The potentiation of hepcidin activity by iron may therefore have immediate consequences for the development of hepcidin mimetics currently in clinical trials 16 .”

    From Structure of hepcidin-bound ferroportin reveals iron homeostatic mechanisms (2020) · cites this paper as [16]

    The Introduction (page unavailable) says that synthetic hepcidin and a hepcidin peptidomimetic have been tested in phase I clinical studies, supporting the clinical-development context. But the paper does not say that iron potentiates hepcidin activity or that such potentiation has consequences for developing those drugs; its experiments instead compare hepcidin with the ferroportin inhibitor VIT-2763. (LLM, conf=0.84)

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  • Although several approaches to restore aberrant FPN function have been evaluated in clinical trials, none have thus far succeeded.

    “Although several approaches to restore aberrant FPN function have been evaluated in clinical trials 16-18 , none have thus far succeeded.”

    From Structure of hepcidin-bound ferroportin reveals iron homeostatic mechanisms (2020) · cites this paper as [16]

    The Introduction (page not provided) names three hepcidin-related approaches tested in phase I clinical studies and says no oral ferroportin inhibitor or hepcidin-mimetic drug was available for treatment. It does not report that those trials failed or establish that none of the approaches succeeded; some are described as still in clinical development. (LLM, conf=0.82)

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Research works printed but not linked: 2

  1. [32]32. Kiefer CR, Snyder LM. Oxidation and eryth- rocyte senescence. Curr Opin Hematol. 2000;7(2):113-116.
  2. [43]43. Olivieri NF. The beta-thalassemias. N Engl J Med. 1999;341(2):99-109.

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Authors
Manolova, V., Nyffenegger, N., Flace, A., Altermatt, P., Varol, A., Doucerain, C., Sundstrom, H., & Dürrenberger, F.
Corresponding author
Manolova, Vania
Venue
Journal of Clinical Investigation
Published
2019-12-09
Volume
130
Issue
1
Pages
491-506
ISSN
  • 0021-9738 (ISSN-L)
  • 1558-8238
OpenAlex
W2982116473
Cited by
98
References
53
Citations by year
2026: 15 · 2025: 12 · 2024: 12 · 2023: 13 · 2022: 12 · 2021: 20 · 2020: 13 · 2019: 1
FWCI
8.29
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Vifor (International) Ltd. (Employer of the authors., Internal budget)
Topics
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
  • Health Sciences › Medicine › Genetics › Hemoglobinopathies and Related Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Hemoglobin structure and function
Keywords
beta-thalassemia, ineffective erythropoiesis, hepcidin, iron homeostasis, iron overload, oral drug delivery, beta-thalassemia intermedia, myeloid precursors, spleen
MeSH terms
Ferroportin, Administration, Oral, Animals, Cell Line, Disease Models, Animal, Dogs, Drug Evaluation, Preclinical, Erythropoiesis, Female, Ferric Compounds, Humans, Iron, Male, Maltose, Mice, Inbred C57BL, Mice, Mutant Strains, beta-Thalassemia, Rats, Sprague-Dawley, Cation Transport Proteins, Mice, Ubiquitination, beta-Globins, Proteolysis, Madin Darby Canine Kidney Cells, Hepcidins

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