Integrin Engagement
Integrin Engagement - Related Videos
01:10
Integrins
0 Views •
2023
Animal and protozoan cells do not have cell walls to help maintain shape and provide structural stability. Instead, these eukaryotic cells secrete a sticky mass of carbohydrates and proteins into the spaces between adjacent cells. This network of proteins and molecules is called an extracellular matrix or ECM. Some ECM proteins assemble into a basement membrane to which the remaining components adhere. Proteoglycans typically form the bulk of the ECM while fibrous proteins, like collagen,...
01:15
Activation of Integrins
0 Views •
2023
Integrins bind ligands and transmit information from outside the cell to inside or vice-versa through an "outside-in signaling" or "inside-out signaling." In "outside-in signaling," external factors in the extracellular space bind to exposed ligand binding sites on integrins. This causes the inactive protein to undergo a conformational change to become active. Integrins are often clustered on the cell membrane. Repetitive and regularly spaced ligand binding events provide an effective stimulus.
14:02
Measuring Engagement of Spectators of Social Digital Games
0 Views •
2021
We propose a methodology that enables measuring engagement of spectators in a social digital game combining physiological and self-reported data. As this digital game involves a group of freely moving people, the experience is filmed using a synchronizing technique that links physiological data with events in the game.
13:57
Assessing the Multiple Dimensions of Engagement to Characterize Learning: A Neurophysiological Perspective
0 Views •
Cited by 43 •
2015
This paper aims to describe the techniques involved in the collection and synchronization of the multiple dimensions (behavioral, affective and cognitive) of learners’ engagement during a task.
03:01
Evaluation of Immunomodulatory Activity of a Virally Encoded Bispecific T-Cell Engager
0 Views •
2026
Source: Heidbuechel, J. P., et al. Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo. J. Vis. Exp. (2019).This video demonstrates a cell-based assay to evaluate the target-specific immunomodulatory activity of a virally encoded bispecific T-cell engager (BTE). The BTE links tumor cells expressing a target receptor with T cells, triggering tumor lysis and enzyme release. A colorimetric readout, based on substrate conversion, indicates T-cell activation. Higher...
FAQs
Ligand binding can promote integrin activation and clustering at the cell surface. These receptor assemblies connect with actin through focal-adhesion proteins, creating a route for biochemical and mechanical signals to move between the extracellular environment and the cell interior. The resulting signaling influences adhesion, spreading, migration, survival, and differentiation rather than serving only as a physical attachment.
Clustering concentrates engaged receptors, while focal-adhesion proteins connect them to the actin cytoskeleton. Together, these features allow cells to coordinate local attachments and transmit forces or biochemical information across the cell-material interface. This organization helps explain why cells can respond differently to engineered adhesive cues even when the cues support attachment in both cases.
Biomaterial chemistry, ligand presentation, substrate stiffness, and surface patterning can each alter how cells experience adhesive cues. These variables influence the extent and organization of receptor engagement and therefore can change downstream behaviors such as spreading, migration, survival, or differentiation. Bioengineers adjust them to guide cell responses rather than treating adhesion as a fixed material property.
Researchers can tune the chemical character of a biomaterial, how adhesive ligands are presented, the stiffness of the substrate, and the spatial patterning of its surface. Comparing cellular responses across these controlled conditions helps identify which environmental features guide adhesion and other behaviors. This approach makes integrin engagement a design variable in engineered cellular microenvironments.
In bioengineering, control over integrin engagement supports the design of tissue scaffolds, organ-on-chip systems, and regenerative therapies. These platforms use material and surface cues to influence how cells attach, spread, migrate, survive, or differentiate. The same principle connects engineered material design with the broader goal of directing cell behavior within constructed or therapeutic environments.
Measuring cellular responses to engineered adhesive cues can show how cells sense and remodel their physical surroundings. Outcomes such as adhesion, spreading, migration, survival, and differentiation provide different readouts of that interaction. In bioengineering studies, these measurements help evaluate whether a scaffold, chip environment, or therapeutic material is producing the intended cellular response.