Cited by 77Iron Metabolism and DisordersHemoglobinopathies and Related DisordersHemoglobin structure and function

Combination therapy with a T mprss6 RNA i‐therapeutic and the oral iron chelator deferiprone additively diminishes secondary iron overload in a mouse model of β‐thalassemia intermedia

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Schmidt, Paul J., Racie, Tim, Westerman, Mark, Fitzgerald, Kevin, Butler, James S., Fleming, Mark D.·2015·American Journal of Hematology

Abstract

β-thalassemias result from diminished β-globin synthesis and are associated with ineffective erythropoiesis and secondary iron overload caused by inappropriately low levels of the iron regulatory hormone hepcidin. The serine protease TMPRSS6 attenuates hepcidin production in response to iron stores. Hepcidin induction reduces iron overload and mitigates anemia in murine models of β-thalassemia intermedia. To further interrogate the efficacy of an RNAi-therapeutic downregulating Tmprss6, β-thalassemic Hbb(th3/+) animals on an iron replete, an iron deficient, or an iron replete diet also containing the iron chelator deferiprone were treated with Tmprss6 siRNA. We demonstrate that the total body iron burden is markedly improved in Hbb(th3/+) animals treated with siRNA and chelated with oral deferiprone, representing a significant improvement compared to either compound alone. These data indicate that siRNA suppression of Tmprss6, in conjunction with oral iron chelation therapy, may prove superior for treatment of anemia and secondary iron loading seen in β-thalassemia intermedia.

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  • Combination therapy of Tmprss6 siRNA LNPs with Deferiprone further mitigated anemia and secondary iron overload in murine β-thalassemia intermedia.

    “In 2015, they employed the combination therapy of the Tmprss6 siRNA LNPs with Deferiprone, an oral iron chelator, for further mitigating anemia and secondary iron overload in murine β-thalassemia intermedia.[70]”

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Authors
Schmidt, P. J., Racie, T., Westerman, M., Fitzgerald, K., Butler, J. S., & Fleming, M. D.
Affiliations
  • Boston Children's Hospital (US)
  • Alnylam Pharmaceuticals (United States) (US)
  • Intrinsic LifeSciences (United States) (US)
Corresponding author
Schmidt, Paul J.
Venue
American Journal of Hematology
Publisher
Wiley
Published
2015-03-23
Volume
90
Issue
4
Pages
310-313
ISSN
  • 0361-8609 (ISSN-L)
  • 1096-8652
OpenAlex
W1832707526
Cited by
77
References
18
Citations by year
2026: 1 · 2025: 2 · 2024: 5 · 2023: 5 · 2022: 7 · 2021: 8 · 2020: 6 · 2019: 8 · 2018: 8 · 2017: 9 · 2016: 9 · 2015: 8 · 2014: 1
FWCI
8.91
Type
journal article
Language
en
Open access
Locations
  • American Journal of Hematology (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
Funders
Alnylam Pharmaceuticals
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 intermedia, TMPRSS6, RNAi therapy, deferiprone, iron chelation, secondary iron overload, hepcidin, iron deficiency, anemia, combination therapy
MeSH terms
Deferiprone, Administration, Oral, Animals, Combined Modality Therapy, Disease Models, Animal, Drug Carriers, Female, Iron, Iron Chelating Agents, Membrane Proteins, Pyridones, Serine Endopeptidases, beta-Thalassemia, RNA Interference, RNA, Small Interfering, Mice, Nanoparticles, Hepcidins

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