Nanoparticle Complex Formation
Nanoparticle Complex Formation - Related Videos
03:45
Formation of Complex Ions
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2020
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
03:06
An In Vitro Technique to Study Inflammasome Complex Formation in Macrophages
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2025
This video demonstrates a technique to study NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome formation in primary macrophages via immunofluorescence. The macrophages are first primed with bacterial lipopolysaccharide (LPS) to upregulate NLRP3 protein expression. Exposing the macrophages to nigericin—a potassium ionophore—leads to the activation of NLRP3 and the formation of inflammasomes, which are visualized via immunofluorescence.
08:43
Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
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Cited by 32 •
2018
Here, we demonstrate a unique, relatively low-temperature, molten-salt synthesis method for preparing uniform complex metal oxide lanthanum hafnate nanoparticles.
10:31
Real-time Live Imaging of T-cell Signaling Complex Formation
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Cited by 1 •
2013
We describe a live-cell imaging method that provides insight into protein dynamics during the T-cell activation process. We demonstrate the combined usage of the T-cell spreading assay, confocal microscopy and imaging analysis to yield quantitative results to follow signaling complex formation throughout T-cell activation.
10:37
Toeprinting Analysis of Translation Initiation Complex Formation on Mammalian mRNAs
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2018
Toeprinting aims to measure the ability of in vitro transcribed RNA to form translation initiation complexes with ribosomes under a variety of conditions. This protocol describes a method for toeprinting mammalian RNA and can be used to study both cap-dependent and IRES-driven translation.
FAQs
The assembly mechanism determines how therapeutic components associate with the nanoparticle and how readily they remain incorporated. Electrostatic attraction can connect oppositely charged components, while hydrophobic association and hydrogen bonding provide alternative stabilizing forces. These interactions also affect cargo retention and release, so selecting compatible materials and conditions is essential when designing a complex for medical delivery.
Particle size and surface charge help determine the physical behavior and stability of the formulation. Changes in either property can influence how a complex remains dispersed, interacts with its surroundings, and releases its cargo. Controlling these characteristics allows researchers to adjust formulation performance rather than treating assembly as complete once the therapeutic component has associated with the nanoparticle.
Complexation can address limitations that may reduce the usefulness of a therapeutic component on its own. A nanoparticle may improve solubility, protect an unstable cargo, or support transport toward cells, whereas the uncomplexed material may be more vulnerable to loss or limited absorption. The resulting system can therefore provide a formulation-based strategy for improving delivery without changing the therapeutic cargo itself.
Preparation requires matching the nanoparticle with the intended cargo and controlling formulation conditions that influence association, stability, and release. Researchers assess the relevant interaction type, particle size, surface charge, and the behavior of the therapeutic component during assembly. These considerations help determine whether the final complex remains sufficiently stable while still allowing the cargo to become available at the desired stage of delivery.
This approach is useful when a drug, nucleic acid, protein, or other therapeutic component is poorly soluble, unstable, or difficult to transport effectively. The resulting complexes can support cellular delivery and may be incorporated into targeted delivery strategies. Their use extends beyond treatment formulation, also supporting medical imaging and diagnostic development when nanoscale transport or functional association is advantageous.
Evaluation focuses on whether the complex has the intended stability, cargo association, and release behavior. Researchers can also consider whether its size and surface charge are consistent with the planned delivery purpose and whether the formulation improves protection, solubility, transport, or cellular delivery. In medicine, these outcomes help connect nanoscale design choices with more precise therapeutic, imaging, or diagnostic applications.