Cell Repellent
Cell Repellent - Related Videos
10:43
High-throughput Identification of Bacteria Repellent Polymers for Medical Devices
0 Views •
Cited by 2 •
2016
A high-throughput microarray method for the identification of polymers which reduce bacterial surface binding on medical devices is described.
02:49
High-Throughput Identification of Bacteria-Repellent Polymers via Microarray Screening
0 Views •
2025
Source: Venkateswaran, S., et al. High-throughput Identification of Bacteria Repellent Polymers for Medical Devices. J. Vis. Exp. (2016)This video demonstrates a high-throughput method to identify bacteria-repellent polymers using a microarray slide exposed to mixed bacterial cultures. Bacterial binding is assessed by DAPI fluorescence, where reduced signal indicates polymers with minimal surface attachment.
08:52
An Introduction to Cell Motility and Migration
0 Views •
2023
Cell motility and migration play important roles in both normal biology and in disease. On one hand, migration allows cells to generate complex tissues and organs during development, but on the other hand, the same mechanisms are used by tumor cells to move and spread in a process known as cancer metastasis. One of the primary cellular machineries that make cell movement possible is an intracellular network of myosin and actin molecules, together known as “actomyosin”, which creates a...
04:41
Magnetically Bioprinted 3D Spheroid Co-cultures: A Method for Co-culturing Cancerous Cells and Fibroblasts
0 Views •
2023
This video explains the 3D magnetic bioprinting of co-cultured pancreatic cancer cells and fibroblasts. Pancreatic cancer cells and activated pancreatic fibroblast cells are co-cultured and magnetized using a biocompatible nanoparticle assembly, to generate spheroids, under the influence of magnetic forces.
07:46
An Efficient and Flexible Cell Aggregation Method for 3D Spheroid Production
0 Views •
Cited by 67 •
2017
Here, we describe a rapid and flexible protocol for the formation of 3D cell spheroids through cell aggregation. This is easily adapted to multiple cell types and is suitable for use in a variety of applications including cell migration, invasion, or anoikis assays, and for imaging and quantifying cell-matrix interactions.
FAQs
Cell-repellent surfaces act upstream of cellular anchoring by limiting adsorption of extracellular-matrix proteins. With fewer matrix proteins available at the interface, cells encounter fewer extracellular cues for attachment and spreading. This weakens the physical basis for stable cell accumulation and helps researchers separate surface chemistry effects from later events such as cytoskeletal organization and tissue formation.
Ligand-integrin interactions connect extracellular attachment cues to the cell’s cytoskeleton. When a repellent region limits the available interface for these interactions, cells have less support for anchoring and maintaining their spread shape. This mechanism is important because it links the properties of the material surface to observable biological outcomes, including reduced attachment and altered cell organization.
Their contrast creates spatial control over where cells can remain attached and organized. Adhesive regions provide locations for cell anchoring, while neighboring repellent regions restrict unwanted spreading or accumulation. By adjusting this arrangement, researchers can generate defined cellular patterns and examine how surface boundaries influence adhesion, migration, co-culture organization, and tissue formation.
They influence organization through the interface that surrounds the cells rather than through a direct alteration of cell identity. Restricting attachment to selected areas changes where cells can establish matrix-supported contacts and spread. When paired with adhesive regions, this physical guidance can produce controlled arrangements that help reveal relationships among surface patterning, migration, adhesion, and tissue development.
A basic strategy is to define which surface areas should support attachment and which should remain nonadhesive, then combine adhesive and cell-repellent regions in a planned pattern. The resulting interface provides spatial control over cell placement and growth. Researchers can use that arrangement to create organized co-cultures or investigate how cells respond to restricted attachment zones.
Patterned surfaces can support studies of cell migration, adhesion, and tissue formation by creating controlled spatial conditions. Researchers can observe whether cells remain within adhesive regions, respond to boundaries, or organize relative to neighboring cell populations. These outcomes make the approach useful for testing how material interfaces influence cellular behavior in defined biological models.
Applications include defined co-culture arrangements, engineered tissue models, and biosensor design. In co-cultures, repellent regions help reduce unwanted growth and maintain spatial organization. In engineered tissues, they contribute to controlled cellular arrangements, while biosensor platforms can use selective cell localization to support measurements or interfaces that depend on organized biological material.