Cited by 58Barrier Structure and Function StudiesRetinal Diseases and TreatmentsRetinal Development and Disorders

The apical and basal environments of the retinal pigment epithelium regulate the maturation of tight junctions during development

Rahner, Christoph, Fukuhara, Masayuki, Peng, Shaomin, Kojima, Shota, Rizzolo, Lawrence J.·2004·Journal of Cell Science

Abstract

A culture model has been established to study the gradual development of tight junctions during the embryogenesis of the chick retinal pigment epithelium. This study asks how closely the culture model reflects normal development and how the composition, structure and function of embryonic tight junctions are affected by the apical and basal environments. The study focused on the expression of claudins, the fine-structure of tight junctional strands and the transepithelial electrical resistance. Between embryonic days 7 and 14, patches of junctional strands gradually expanded and coalesced to form a continuous junction, in vivo. Although there was a corresponding increase in claudin expression, different claudins appeared at different times. In culture, the apical and basal environments acted synergistically to promote a continuous network of tight junctions with higher electrical resistance. Independently, pituitary extract or the secretory products of either embryonic fibroblasts or the retina promoted the formation of tight junctions. In combination, three effects were identified. With basally placed fibroblast conditioned medium, apical retinal medium increased transepithelial electrical resistance by affecting structure alone. With basally placed pituitary extract, apical retinal conditioned medium increased transepithelial electrical resistance by affecting structure and by modulating claudin expression in a manner that was consistent with development in vivo. Although embryonic day 7 and 14 cultures in retinal medium exhibited similar structure, the transepithelial electrical resistance of the embryonic day 14 cultures was higher. This higher transepithelial electrical resistance correlated with differences in claudin expression and localization. Therefore, this experimental model can isolate the effects of retinal secretions on structure and claudin expression, and can help us to determine how claudins affect function when structure is held constant.

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Crossref · 10.1242/jcs.01181

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  • TER is a critical measure of the barrier function of the RPE, which is established by the expression and circumferential localization of tight junction proteins such as ZO-1, occludin, and specific claudins.

    “The TER is a critical measure of the barrier function of the RPE, which is established by the expression and circumferential localization of tight junction proteins, such as zonula occludens (ZO)-1, occludin, and specific claudins (Rahner et al., 2004; Peng et al., 2011).”

    From The cell biology of the retinal pigment epithelium (2020) · cites this paper as Rahner et al., 2004

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Authors
Rahner, C., Fukuhara, M., Peng, S., Kojima, S., & Rizzolo, L. J.
Affiliations
Yale University (US)
Corresponding author
Rizzolo, Lawrence J.
Venue
Journal of Cell Science
Published
2004-07-01
Volume
117
Issue
15
Pages
3307-3318
ISSN
  • 0021-9533 (ISSN-L)
  • 1477-9137
OpenAlex
W2025620223
Cited by
58
References
50
Citations by year
2025: 4 · 2024: 2 · 2023: 1 · 2022: 3 · 2021: 3 · 2020: 4 · 2019: 2 · 2018: 1 · 2017: 3 · 2016: 2 · 2014: 1 · 2013: 3
FWCI
2.48
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Cell Science (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Funders
  • National Eye Institute (EY-08694, P30EY000785, EY-00785, R01EY008694)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK-34989, DK34135, P30DK034989)
Topics
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Health Sciences › Medicine › Ophthalmology › Retinal Diseases and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
Keywords
retinal pigment epithelium, claudins, transepithelial electrical resistance, embryonic development, chick embryo, pituitary extract, fibroblast-conditioned medium
MeSH terms
Animals, Cell Separation, Cells, Cultured, Chick Embryo, Electrophysiology, Fibroblasts, Freeze Fracturing, Microscopy, Fluorescence, Nerve Tissue Proteins, Pigment Epithelium of Eye, Retina, RNA, Messenger, Time Factors, Polymerase Chain Reaction, Culture Media, Conditioned, Electric Impedance, DNA Primers, Gene Expression Regulation, Developmental, Tight Junctions, Reverse Transcriptase Polymerase Chain Reaction

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