Intercellular Binding Energy
Intercellular Binding Energy - Related Videos
02:13
Nuclear Binding Energy
0 Views •
2020
The difference between the calculated and experimentally measured masses is known as the mass defect of the atom. In the case of helium-4, the mass defect indicates a “loss” in mass of 4.0331 amu – 4.0026 amu = 0.0305 amu. The loss in mass accompanying the formation of an atom from protons, neutrons, and electrons is due to the conversion of that mass into energy that is evolved as the atom forms. The nuclear binding energy is the energy produced when the atoms’ nucleons are bound together;...
01:26
Intercellular Communication in a Contact-Free Co-Culture of Neurons and Oligodendrocytes
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2025
Begin with a contact-free co-culture of neurons and oligodendrocytes.A permeable membrane separates the neurons in the transwell insert from the oligodendrocytes at the bottom well.Add potassium to the insert to raise extracellular potassium levels, which inhibits the efflux of intracellular potassium.The potassium accumulation depolarizes the neurons, triggering the opening of voltage-gated calcium channels and allowing calcium influx.The influx stimulates the release of excitatory...
02:18
The Equilibrium Binding Constant and Binding Strength
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2020
The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium: where P and L are the unbound protein and ligand, respectively, and PL is the protein-ligand complex. As the amount of bound ligand is also related to the rate of ligand binding, experiments can also determine Kb by examining the rates of protein-ligand association (kon) and dissociation (koff) using the following ratio: Thus,...
10:50
Nanopodia - Thin, Fragile Membrane Projections with Roles in Cell Movement and Intercellular Interactions
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Cited by 15 •
2014
Nanopodia are thin but fragile membrane channels that extend up to 100 μm from a cell's leading front or trailing rear and sense the cellular environment. Direct fixation at 37 °C, gentle washing, and avoidance of organic solvents like ethanol, methanol, or acetone and of higher Triton X-100 concentrations are required to observe these cellular structures.
04:10
What is Energy?
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2020
The universe is composed of matter in different forms, and all forms of matter contain energy. The different forms of energy on Earth originate from the Sun — the ultimate energy source. Plants capture light energy from the Sun, and, via the process of photosynthesis, convert it into chemical energy. This stored energy from plants can be harnessed in many ways. For example, eating plant products as food provides energy for our body to function, and burning wood or coal (fossilized plants)...
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These contributions act together rather than independently. Cadherins provide adhesion between neighboring cells, membrane interactions influence contact formation, and cytoskeletal forces transmit or oppose mechanical stresses at the interface. Their combined effects determine the work associated with maintaining or disrupting cell-cell contacts, allowing measurements to reflect both molecular adhesion and the mechanical organization of the contacting cells.
Ligand density affects how many potential adhesive interactions can form, while receptor organization influences how effectively those interactions are arranged at the cell interface. Changes in either variable can alter the strength of cell-cell contact and the energy required for separation. This makes binding-energy measurements useful for evaluating how molecular presentation influences tissue cohesion.
Extracellular conditions can modify the interactions that support adhesion and the forces transmitted through contacting cells. Consequently, the energy required to separate cells may increase or decrease even when the cells and adhesion molecules remain the same. Comparing measurements under different extracellular conditions helps identify how the surrounding environment contributes to cell retention and interface strength.
The detachment work provides a quantitative readout of how strongly adjacent cells are coupled. Comparing this value across changes in ligand density, receptor organization, or extracellular conditions can reveal which factors strengthen or weaken the interface. The result links an experimentally measurable separation requirement to changes in molecular adhesion, membrane interactions, and cytoskeletal force transmission.
Measurements can help bioengineers tune interfaces for the desired balance of cell retention and tissue remodeling. A stronger measured attachment may support stable cell incorporation, whereas altered binding can permit rearrangement during tissue development. Using binding energy as a design measure connects material or interface choices with the cohesion and mechanical behavior required in engineered tissues.
Organoid systems depend on controlled interactions between neighboring cells, so interface strength can affect how well cells remain associated and how tissues reorganize. Measuring binding energy gives researchers a way to compare cell-cell contacts and adjust conditions that influence retention or remodeling. This quantitative context supports more deliberate engineering of organoid organization and cohesion.