Cited by 77Iron Metabolism and DisordersTrace Elements in HealthFerroptosis and cancer prognosis

Colocalization of ferroportin‐1 with hephaestin on the basolateral membrane of human intestinal absorptive cells

Han, Okhee, Kim, Eun‐Young·2007·Journal of Cellular Biochemistry

Abstract

An iron exporter ferroportin‐1 (FPN‐1) and a multi‐copper oxidase hephaestin (Heph) are predicted to be expressed on the basolateral membrane of the enterocyte and involved in the processes of iron export across the basolateral membrane of the enterocyte. However, it is not clear where these proteins are exactly located in the intestinal absorptive cell. We examined cellular localization of FPN‐1 and Heph in the intestinal absorptive cells using the fully differentiated Caco‐2 cells. Confocal microscope study showed that FPN‐1 and Heph are located on the basolateral membrane and they are associated with the transferrin receptor (TfR) in fully differentiated Caco‐2 cells grown on microporous membrane inserts. However, Heph protein was not detected in the crypt cell‐like proliferating Caco‐2 cell. In stably transfected human intestinal absorptive cells expressing human FPN‐1 modified by the addition of GFP at the C‐terminus, we show that FPN‐1‐GFP is located on the basolateral membrane and it is associated with Heph suggesting the possibility that FPN‐1 might associate and interact with Heph in the process of iron exit across the basolateral membrane of intestinal absorptive cell. J. Cell. Biochem. 101: 1000–1010, 2007. © 2007 Wiley‐Liss, Inc.

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Crossref · 10.1002/jcb.21392

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Authors
Han, O., & Kim, E.
Affiliations
Pennsylvania State University (US)
Corresponding author
Han, Okhee
Venue
Journal of Cellular Biochemistry
Publisher
Wiley
Published
2007-05-07
Volume
101
Issue
4
Pages
1000-1010
ISSN
  • 0730-2312 (ISSN-L)
  • 1097-4644
OpenAlex
W2050280601
Cited by
77
References
35
Citations by year
2025: 1 · 2024: 2 · 2023: 2 · 2022: 1 · 2021: 6 · 2020: 3 · 2019: 4 · 2018: 4 · 2017: 3 · 2016: 3 · 2015: 2 · 2014: 9 · 2013: 5 · 2012: 5
FWCI
4.71
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Cellular Biochemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Pennsylvania State University
  • Huck Institutes of the Life Sciences
  • National Institute of Diabetes and Digestive and Kidney Diseases (R21DK069946)
Topics
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Ferroptosis and cancer prognosis
Keywords
ferroportin 1, hephaestin, iron export, basolateral membrane, enterocytes, transferrin receptor, protein colocalization, Caco-2 cells, multicopper oxidase, iron metabolism
MeSH terms
Ferroportin, Cell Membrane, Electrophoresis, Polyacrylamide Gel, Fluorescent Antibody Technique, Humans, Membrane Proteins, Receptors, Transferrin, Recombinant Fusion Proteins, Transfection, Blotting, Western, Microscopy, Confocal, Caco-2 Cells, Cation Transport Proteins, Green Fluorescent Proteins

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