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Total coating area | 4.50 cm² |
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Bottom | ibidi Polymer Coverslip |
Main Channel (Lower Channel) | |
Access | Luer port, accessible with female Luers |
Volume | 50 µl |
Height x Length x Width | 0.4 mm x 25 mm x 5 mm |
Growth area | 1.25 cm² |
Upper Channel | |
Access | Reservoir port, accessible with 20/200 µl pipet tips |
Volume | 55 µl |
Height over membrane | 1.3 mm |
ibiPore Membrane | |
Material | SiO2 (glass) |
Thickness | 0.3 µm (300 nm) |
Membrane size | 2 mm x 2 mm |
Porous area | 1.77 mm x 1.84 mm |
Restrictions for objective lenses Working distance >0.5 mm |
Restrictions for objective lenses Working distance >0.5 mm |
Pore layout | Hexagonal spacing |
Shown here is a time lapse movie of a transmigrating human HL-60 cell that was seeded into the lower channel of a µ-Slide Membrane ibiPore Flow (pore size 3 µm). Under flow conditions, the cell transmigrates in vitro through the porous glass membrane into the upper channel that was filled with a 3D collagen matrix containing the chemoattractant fMLP.
Live cell imaging of a transmigrating single SiR-Actin-stained cell (indicated by pseudo colors) by spinning disc confocal microscopy (20x objective) with a time interval of 30 s. The arrow indicates the direction of flow at a shear stress of 1 dyne/cm2; Scale bar = 10 um. Courtesy R. Pick, Munich, Germany.
The μ-Slide Membrane ibiPore Flow consists of a horizontal porous glass membrane that is inserted between two channels. The upper channel is a static reservoir above the membrane. The lower channel is a perfusion channel for applying defined shear stress on cells, which are attached to the membrane. The upper and the lower channel communicate with each other only across the membrane.
Porosity refers to the void volume fraction of the membrane. It is defined as the volume of the pores divided by the total volume of the membrane.
Membrane Pore Size and Porosity | Applications | Example Cell Types |
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0.5 µm pores, high porosity (20%) | Permeability and transport studies, co-culture models | Lung cells, epithelial cells |
3.0 µm pores, low porosity (5%) | Transendothelial migration | Leukocytes (e.g., neutrophils), lymphocytes (e.g., T cells or B cells) |
5.0 µm pores, low porosity (5%) | Invasion, migration | Monocytes, macrophages, lymphocytes (e.g., T cells or B cells) |
8.0 µm pores, low porosity (5%) | Invasion, migration | Tumour and cancer cells, endothelial and epithelial cells, fibroblasts, osteoblasts, melanoma cells, glioma cells |
The bigger the cell, the bigger the recommended pore size.