Micropipette Alignment
Micropipette Alignment - Related Videos
10:31
Micropipette Aspiration of Substrate-attached Cells to Estimate Cell Stiffness
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Cited by 30 •
2012
Here we describe a quick and simple method to measure cell stiffness. The general principle of this approach is to measure membrane deformation in response to well-defined negative pressure applied through a micropipette to the cell surface. This method provides a powerful tool to study biomechanical properties of substrate-attached cells.
11:36
Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell
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Cited by 21 •
2009
The analytical ultracentrifuge (AUC) sample cell holds sample and reference buffer and during experiments and is exposed to high vacuum and rotor speeds up to 60,000 rpm. This video will demonstrate the rigorous attention to detail necessary for assembly, loading and alignment of this very important component of an AUC experiment.
08:52
Three-dimensional Tissue Engineered Aligned Astrocyte Networks to Recapitulate Developmental Mechanisms and Facilitate Nervous System Regeneration
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Cited by 19 •
2018
We showcase the development of self-assembled, three-dimensional bundles of longitudinally aligned astrocytic somata and processes within a novel biomaterial encasement. These engineered "living scaffolds", exhibiting micron-scale diameter yet extending centimeters in length, may serve as test-beds to study neurodevelopmental mechanisms or facilitate neuroregeneration by directing neuronal migration and/or axonal pathfinding.
01:17
Design Example: Alignment of a Road Line Using GIS
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2025
The alignment of a road line using Geographic Information Systems (GIS) is a critical process in civil engineering, combining advanced technology with practical decision-making. This methodology begins with the collection of geospatial data, including information on land cover, geomorphology, drainage patterns, slope, and contour details. Such data is typically acquired through satellite imagery and GIS tools, offering a comprehensive understanding of the terrain.Once the data is gathered, it...
09:48
An Approach to Enhance Alignment and Myelination of Dorsal Root Ganglion Neurons
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Cited by 7 •
2016
This protocol describes the isolation of dorsal root ganglion (DRG) neurons isolated from rats and the culture of DRG neurons on a static pre-stretched cell culture system to enhance axon alignment, with subsequent co-culture of Schwann Cells (SCs) to promote myelination.
FAQs
Off-axis contact can distort how the glass tip interacts with a cell or tissue, making the applied pressure or suction less representative of the target’s actual mechanical response. Precise positioning keeps contact geometry consistent and reduces measurement error. This is especially important when comparing subtle differences in deformability, membrane mechanics, or adhesion between cancer-related samples.
Microscopic control allows researchers to position the pipette tip relative to the selected cell or tissue before applying force. The visual relationship between the tip and target helps limit unintended contact and supports repeatable measurements. Maintaining this alignment is important because the resulting data depend not only on pressure or suction, but also on where and how the pipette meets the sample.
Pressure or suction produces the controlled interaction used to probe a sample, but its effect can be misinterpreted if the pipette is poorly positioned. Accurate alignment helps ensure that the applied condition acts on the intended region rather than introducing additional off-axis contact. Consequently, researchers can more reliably relate observed responses to cell deformability, membrane mechanics, or adhesion.
Researchers first view the target under a microscope, then position the glass micropipette tip relative to the chosen cell or tissue. They adjust the relationship between tip and sample to minimize off-axis contact before applying controlled pressure or suction. This sequence establishes a consistent measurement geometry, which supports reliable assessment of the sample’s mechanical or adhesive behavior.
Accurate alignment supports measurements related to cancer-cell deformability, membrane mechanics, adhesion, and interactions with surrounding tissues. These properties describe how cells respond to controlled contact and force during micropipette-based experiments. Reliable measurements can reveal mechanical differences between healthy and malignant cells, giving researchers evidence relevant to tumor progression, invasion, metastasis, and treatment-response studies.
When alignment and applied conditions remain controlled, researchers can compare the mechanical responses of healthy and malignant cells with less influence from positioning error. Differences in deformability, membrane mechanics, or adhesion may then be examined as characteristics associated with malignancy. In cancer research, such comparisons contribute to studies of how cellular mechanics relate to tumor progression, tissue interaction, and treatment response.