Fibronectin Functionalization
Fibronectin Functionalization - Related Videos
01:25
Fibronectins Connect Cells with ECM
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2023
Fibronectin is an adhesive glycoprotein present in the extracellular matrix of embryogenic and adult tissue. These molecules primarily aid in regulating cell motility and attachment. A fibronectin molecule is composed of two identical polypeptide chains attached to each other by a pair of disulfide bonds at the C-terminal. Both proteoglycans and collagen are attached to fibronectin proteins, which, in turn, are attached to integrin proteins. These integrin proteins interact with transmembrane...
08:09
Isolation of Chondrocytes and Chondroprogenitors Using Fibronectin Adhesion and Migratory Assay
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Cited by 5 •
2024
This protocol details the isolation of chondrocytes, Fibronectin Adhesion Assay-derived Chondroprogenitors (FAA-CPs), and Migratory Chondroprogenitors (MCPs) from human articular cartilage. It covers enzymatic digestion, fibronectin adhesion, and migration-based assays for isolating and characterizing these cells.
10:57
Examining the Dynamics of Cellular Adhesion and Spreading of Epithelial Cells on Fibronectin During Oxidative Stress
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Cited by 2 •
2019
This method is useful for quantifying the early dynamics of cellular adhesion and spreading of anchorage-dependent cells onto the fibronectin. Furthermore, this assay can be used to investigate the effects of altered redox homeostasis on cell spreading and/or cell adhesion-related intracellular signaling pathways.
07:14
Fabrication of a Biomimetic Nano-Matrix with Janus Base Nanotubes and Fibronectin for Stem Cell Adhesion
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Cited by 20 •
2020
The goal of this protocol is to show the assembly of a biomimetic nanomatrix (NM) with Janus base nanotubes (JBNTs) and fibronectin (FN). When co-cultured with human mesenchymal stem cells (hMSCs), the NMs exhibit excellent bioactivity in encouraging hMSCs adhesion.
11:09
Generation of Aligned Functional Myocardial Tissue Through Microcontact Printing
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Cited by 19 •
2013
The generation of aligned myocardial tissue is a key requirement for adapting the recent advances in stem cell biology to clinically useful purposes. Herein we describe a microcontact printing approach for the precise control of cell shape and function. Using highly purified populations of embryonic stem cell derived cardiac progenitors, we then generate anisotropic functional myocardial tissue.
FAQs
Cell behavior depends not only on how much fibronectin is present, but also on whether its binding regions remain accessible. Surface density and molecular orientation influence how effectively integrin receptors engage the coating, which can alter attachment, spreading, migration, and downstream signaling. Consequently, optimizing presentation is important when the goal is to regulate rather than simply increase cellular adhesion.
Adsorption places fibronectin on a substrate through surface interactions, whereas covalent immobilization chemically anchors it to the material. These approaches can differ in how firmly the protein is retained and how its binding domains are presented to cells. Selecting between them therefore affects the functional coating and the extent to which surface properties can be controlled in bioengineering experiments.
Integrin receptors provide the cellular connection to accessible fibronectin binding domains, including the RGD sequence. Their engagement supports attachment and is associated with organization of cytoskeletal structures, linking the modified surface to changes in cell shape and behavior. This mechanism explains why fibronectin functionalization can influence spreading, migration, and signaling rather than merely providing passive surface adhesion.
A useful design considers the substrate, the immobilization approach, fibronectin density, and molecular orientation. These variables determine whether cells encounter sufficient accessible binding sites and can form effective receptor-mediated attachments. Controlling them helps researchers create reproducible differences in adhesion, spreading, migration, or signaling, making the surface suitable for comparing cellular responses under defined bioengineering conditions.
A general workflow begins by selecting the biomaterial or surface, followed by applying fibronectin through adsorption or covalent immobilization. Researchers then consider whether the coating preserves accessible binding domains and adjust density or presentation as needed. The functionalized material can subsequently be evaluated through cell attachment, spreading, migration, or signaling measurements to determine whether the intended cellular response was achieved.
The approach is applied to scaffolds, cell-culture substrates, biosensors, and implants when researchers need to improve cellular compatibility or regulate cell behavior. In tissue engineering and regenerative medicine, it can help shape how cells interact with engineered materials. In vitro studies also use controlled fibronectin presentation to investigate adhesion, spreading, migration, and related signaling responses.