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Related Concept Videos

Overview of the Vascular System01:20

Overview of the Vascular System

The vascular system comprises an extensive network of arteries, capillaries, and veins. The vascular system can be broadly divided into the blood and lymphatic systems. Typically, blood vessels can be categorized into three histological regions: tunica intima, tunica media, and tunica adventitia. The tunica intima consists of a single layer of endothelial cells attached to the basal lamina. Underlying the basal lamina is a connective tissue layer and an elastic lamina that gives stability and...
Receptor-mediated Endocytosis01:38

Receptor-mediated Endocytosis

Overview
Cancer Cell Migration through Invadopodia01:35

Cancer Cell Migration through Invadopodia

Invadosome is a broad category of cell surface structures with proteolytic activity that  degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However, invadopodia can...
Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
Tight Junctions01:29

Tight Junctions

Tight junctions are molecular seals between cells that prevent the leaking of fluids, ions, and other small solutes across cavities and compartments in multicellular organisms. They are mainly composed of claudin and occludin transmembrane proteins, and other proteins such as tricellulin and JAM (junctional adhesion molecule). All these proteins are 4-pass transmembrane proteins, except JAM, which is a single-pass transmembrane protein belonging to the immunoglobulin superfamily. The...
Anchoring Junctions01:03

Anchoring Junctions

Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...

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Related Experiment Video

Updated: Jun 25, 2026

Generation of Patient-Derived Podocytes from Skin Biopsies
08:52

Generation of Patient-Derived Podocytes from Skin Biopsies

Published on: May 26, 2023

[The endothelial podosome].

Elisabeth Génot1

  • 1IECB/Inserm U889, 2, rue Robert Escarpit, 33600 Pessac, France. e.genot@iecb.u-bordeaux.fr

Medecine Sciences : M/S
|February 26, 2009
PubMed
Summary

Podosomes, dynamic cell structures, are found in endothelial cells and aid in tissue invasion during vascular remodeling. This study explores their unique characteristics and potential roles.

Area of Science:

  • Cell Biology
  • Biochemistry

Context:

  • Podosomes are dynamic adhesion microdomains in monocyte-derived cells.
  • They feature a two-part architecture with an F-actin core and a protein ring.
  • Podosomes degrade extracellular matrix via metalloproteases.

Purpose:

  • To summarize recent advances in podosome research.
  • To discuss the characteristics of podosomes in endothelial cells.
  • To compare endothelial podosomes with monocytic podosomes and invadopodia.

Summary:

  • Podosomes, previously observed in monocytes, are now identified in endothelial cells.
  • Endothelial podosomes exhibit characteristics of both monocytic podosomes and invadopodia.
  • These structures are involved in tissue invasive activities during vascular remodeling.

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Guided Differentiation of Mature Kidney Podocytes from Human Induced Pluripotent Stem Cells Under Chemically Defined Conditions
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Endothelial Cell Transcytosis Assay as an In Vitro Model to Evaluate Inner Blood-Retinal Barrier Permeability
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Endothelial Cell Transcytosis Assay as an In Vitro Model to Evaluate Inner Blood-Retinal Barrier Permeability

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Related Experiment Videos

Last Updated: Jun 25, 2026

Generation of Patient-Derived Podocytes from Skin Biopsies
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Generation of Patient-Derived Podocytes from Skin Biopsies

Published on: May 26, 2023

Guided Differentiation of Mature Kidney Podocytes from Human Induced Pluripotent Stem Cells Under Chemically Defined Conditions
08:06

Guided Differentiation of Mature Kidney Podocytes from Human Induced Pluripotent Stem Cells Under Chemically Defined Conditions

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Endothelial Cell Transcytosis Assay as an In Vitro Model to Evaluate Inner Blood-Retinal Barrier Permeability
10:56

Endothelial Cell Transcytosis Assay as an In Vitro Model to Evaluate Inner Blood-Retinal Barrier Permeability

Published on: June 7, 2022

Impact:

  • Advances understanding of podosome function beyond monocytic cells.
  • Highlights the role of endothelial podosomes in vascular remodeling and tissue invasion.
  • Provides insights into cell migration and matrix degradation mechanisms.