Cited by 100RNA Interference and Gene DeliveryIron Metabolism and DisordersNanoparticle-Based Drug Delivery

Oral Gavage of Ginger Nanoparticle-Derived Lipid Vectors Carrying Dmt1 siRNA Blunts Iron Loading in Murine Hereditary Hemochromatosis

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Wang, Xiaoyu, Zhang, Mingzhen, Flores, Shireen R.L., Woloshun, Regina R., Yang, Chunhua, Yin, Liangjie, Xiang, Ping, Xu, Xiaodong +4 more·2019·Molecular Therapy

Abstract

Nanoparticles (NPs) have been utilized to deliver drugs to the intestinal epithelium in vivo . Moreover, NPs derived from edible plants are less toxic than synthetic NPs. Here, we utilized ginger NP-derived lipid vectors (GDLVs) in a proof-of-concept investigation to test the hypothesis that inhibiting expression of divalent metal-ion transporter 1 (Dmt1) would attenuate iron loading in a mouse model of hereditary hemochromatosis (HH). Initial experiments using duodenal epithelial organ cultures from intestine-specific Dmt1 knockout (KO) (Dmt1 int/int ) mice in the Ussing chamber established that Dmt1 is the only active iron importer during iron-deficiency anemia. Further, when Dmt1 int/int mice were crossed with mice lacking the iron-regulatory hormone, hepcidin (Hepc −/− ), iron loading was abolished. Hence, intestinal Dmt1 is required for the excessive iron absorption that typifies HH. Additional experiments established a protocol to produce GDLVs carrying functional Dmt1 small interfering RNAs (siRNAs) and to target these gene delivery vehicles to the duodenal epithelium in vivo (by incorporating folic acid [FA]). When FA-GDLVs carrying Dmt1 siRNA were administered to weanling Hepc −/− mice for 16 days, intestinal Dmt1 mRNA expression was attenuated and tissue iron accumulation was blunted. Oral delivery of functional siRNAs by FA-GDLVs is a suitable therapeutic approach to mitigate iron loading in murine HH.

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  • Short interfering RNA against DMT1, administered in nanoparticles to target intestinal absorption, established a proof of principle of reducing dietary iron uptake.

    “Short interfering RNA against DMT1, administered in nanoparticles to target intestinal absorption,127 established a proof of principle of reducing dietary iron uptake.”

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Authors
Wang, X., Zhang, M., Flores, S. R. L., Woloshun, R. R., Yang, C., Yin, L., Xiang, P., Xu, X., Garrick, M. D., Vidyasagar, S., Merlin, D., & Collins, J. F.
Affiliations
  • University of Florida (US)
  • Georgia State University (US)
  • University of Florida Health (US)
  • University at Buffalo, State University of New York (US)
Corresponding author
Collins, James F.
Venue
Molecular Therapy
Publisher
Elsevier BV
Published
2019-03
Volume
27
Issue
3
Pages
493-506
ISSN
1525-0016 (ISSN-L)
OpenAlex
W2908589438
Cited by
99
References
62
Citations by year
2026: 13 · 2025: 15 · 2024: 21 · 2023: 19 · 2022: 8 · 2021: 13 · 2020: 6 · 2019: 4
FWCI
2.65
Type
journal article
Language
en
Open access
Locations
  • Molecular Therapy (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01 DK109717)
  • NIDDK
  • Office of Dietary Supplements
  • China Scholarship Council
  • Crohn's & Colitis Foundation of America
  • Department of Veteran Affairs
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
Keywords
hereditary hemochromatosis, DMT1, siRNA delivery, oral gene delivery, iron overload, hepcidin, intestinal iron absorption, duodenal epithelium, folic acid targeting, iron deficiency anemia
MeSH terms
Animals, Female, Hemochromatosis, Humans, Iron, Male, Mice, Inbred C57BL, Transcription Factors, Mice, Knockout, Iron, Dietary, Zingiber officinale, RNA, Small Interfering, Mice, Nanoparticles, HEK293 Cells, Real-Time Polymerase Chain Reaction, Hepcidins

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