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Enrichment of Bruch's Membrane from Human Donor Eyes
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Drebrin at Junctional Plaques.

Wiebke K Ludwig-Peitsch1

  • 1Department of Dermatology, Vivantes Klinikum im Friedrichshain, Landsberger Allee 49, 10249, Berlin, Germany. wiebke.ludwig-peitsch@vivantes.de.

Advances in Experimental Medicine and Biology
|September 3, 2017
PubMed
Summary
This summary is machine-generated.

Drebrins, proteins regulating cell structure, are found at cell junctions in various tissues. Their presence in certain cancers suggests a role in tumor development and spread.

Keywords:
ActinAdherens junctionBasal cell carcinomaConnexin 43DrebrinMicrotubuleVinculin

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Area of Science:

  • Cell Biology
  • Biochemistry
  • Oncology

Background:

  • Actin filaments at adherens junctions regulate cell adhesion, segregation, and plasticity.
  • Drebrins, initially found in neurons, are also present in non-neuronal cells at adherens junctions.
  • Drebrin E localizes to actin filament bundles near junctional plaques.

Purpose of the Study:

  • To investigate the role and localization of drebrin in non-neuronal cells.
  • To explore drebrin's interaction with junctional proteins like connexin 43.
  • To assess drebrin's involvement in cellular processes and cancer.

Main Methods:

  • Immunofluorescence microscopy to detect drebrin localization.
  • Co-immunoprecipitation to study protein interactions.
  • In vivo studies in various non-neuronal tissues.

Main Results:

  • Drebrin E is enriched at actin filaments associated with adherens junctions in diverse non-neuronal cells.
  • Drebrin interacts with connexin 43 at gap junctions, stabilizing it and linking to the actin cytoskeleton.
  • Drebrin is involved in cell compaction and terminal web formation in intestinal cells.
  • Upregulation of drebrin is observed in basal cell carcinomas, colon carcinoma liver metastases, and bladder cancer.

Conclusions:

  • Drebrin plays a significant role in actin dynamics and cellular organization in various non-neuronal tissues.
  • Drebrin's interaction with connexin 43 highlights its function at gap junctions.
  • The upregulation of drebrin in cancers suggests its involvement in tumor progression and metastasis.