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Methodenartikel

Visualization of Internalized Anaerobic Bacteria within Host Endothelial Cells

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8 juli 2025

In dit artikel

Samenvatting

Source: Wunsch, C. M. et. al., Porphyromonas gingivalis as a Model Organism for Assessing Interaction of Anaerobic Bacteria with Host Cells. J. Vis. Exp. (2015)

In this video, we demonstrate a procedure to visualize internalized Porphyromonas gingivalis, an anaerobic pathogenic bacterium, within human endothelial cells using confocal microscopy. The bacteria are stained with a fluorescent dye while the host endothelial cell actin cytoskeleton is labeled with a different fluorescent dye. The internalized Porphyromonas gingivalis inside endothelial cells are visualized using confocal microscopy.

Protocol

1. Internalization of Bacteria into Host Cells (Fluorescent Microscopy)

Note: P. gingivalis is labeled with 2',7'-Bis-(2-Carboxyethyl)-5-(and-6)-Carboxyfluorescein, Acetoxymethyl Ester (BCECF-AM). BCECF-AM is a non-fluorescent membrane-permeable dye; its conversion to fluorescein BCECF via the action of intracellular esterases can indicate cell viability. P. gingivalis is labeled with the BCECF-AM dye and then used to infect eukaryotic cells. Following infection, cells are fixed and labeled with DAPI and TRITC-phalloidin. The DAPI stain used to stain the eukaryotic cell nucleus will also lab....

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Openbaarmakingen

No conflicts of interest declared.

Materialen

Lijst van materialen gebruikt in dit artikel
NaamBedrijfCatalogusnummerOpmerkingen
Vinyl Anaerobic Chamber-Type BCoy Laboratory ProductsModel 2000 incubator
TSA II Trypticase Soy Agar w/5% Sheep BloodBBL221261
Human Umbilical Vein Endothelial Cells 10-donor PoolLifeLine TechnologyFC-0044
VascuLife VEGF Medium Complete KitLifeLine TechnologyLL-0003
TrypKitLifeLineLL-0013
BCECF-AMLifeTechnologiesB1150
TRITC PhalloidinSigma-AldrichP1951
18 mm Circular CoverslipsElectron Microscopy Sciences72222-01
VectaShield Mounting Medium with DAPIVector LaboratoriesH-1200

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Porphyromonas gingivalisconfocale microscopiebacteriële internalisatiefluorescente kleuringactine-cytoskeletBCECF-AMphalloïdineDAPI