Journal
JOURNAL OF CEREBRAL BLOOD FLOW AND METABOLISM
Volume 39, Issue 11, Pages 2117-2131Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/0271678X18783372
Keywords
Blood-brain barrier; H-ferritin; iron; transferrin; transferrin receptor
Categories
Funding
- NIEHS NIH HHS [R01 ES010563, R01 ES016931] Funding Source: Medline
- NINDS NIH HHS [R01 NS077678] Funding Source: Medline
Ask authors/readers for more resources
Iron delivery to the brain is essential for multiple neurological processes such as myelination, neurotransmitter synthesis, and energy production. Loss of brain iron homeostasis is a significant factor in multiple neurological disorders. Understanding the mechanism by which the transport of iron across the blood-brain barrier (BBB) is regulated is crucial to address the impact of iron deficiency on brain development and excessive accumulation of iron in neurodegenerative diseases. Using induced pluripotent stem cell (iPSC)-derived brain endothelial cells (huECs) as a human BBB model, we demonstrate the ability of transferrin, hepcidin, and DMT1 to impact iron transport and release. Our model reveals a new function for H-ferritin to transport iron across the BBB by binding to the T-cell immunoglobulin and mucin receptor 1. We show that huECs secrete both transferrin and H-ferritin, which can serve as iron sources for the brain. Based on our data, brain iron status can exert control of iron transport across the endothelial cells that constitute the BBB. These data address a number of pertinent questions such as how brain iron uptake is regulated at the regional level, the source of iron delivery to the brain, and the clinical strategies for attempting to treat brain iron deficiency.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available