Small Molecule Delivery
Small Molecule Delivery - Related Videos
03:37
Tracer Molecule Delivery in the Cisterna Magna: A Method to Deliver Fluorescent Tracer Molecules via Direct Cannulation of the Cisterna Magna in Pig
0 Views •
2025
This video describes the protocol for tracer molecule delivery via direct cannulation of the cisterna magna in a pig brain. This method helps visualize the distribution of cerebrospinal fluid in the glymphatic system.
03:50
A Technique to Generate a Novel Delivery Platform for a Delayed Burst Release of Molecules
0 Views •
2025
This video demonstrates a method for the generation of a polymer bubble or polybubble-based novel platform that enables delayed burst release. Polyester-based polymers are used to form the polybubbles with core-shell structure, and small molecules and antigens can be used as cargo.
08:52
Direct Infusion Device for Molecule Delivery in Plants
0 Views •
Cited by 1 •
2023
This manuscript describes a novel direct plant infusion device for screening the effectiveness of molecules against the bacteria (Candidatus Liberibacter asiaticus) or its insect vector (Diaphorina citri, Kuwayama) that, in combination, are associated with Huanglongbing citrus disease.
11:13
In Vitro Permeation of FITC-loaded Ferritins Across a Rat Blood-brain Barrier: a Model to Study the Delivery of Nanoformulated Molecules
0 Views •
Cited by 15 •
2016
A method to establish an in vitro model of blood-brain barrier based on a co-culture of rat brain microvascular endothelial cells and astrocytes is described and validated. This system proved to be a valid tool to study the effect of nanoformulation on the trans-barrier permeation of fluorescent molecules.
10:30
Delivery of Proteins, Peptides or Cell-impermeable Small Molecules into Live Cells by Incubation with the Endosomolytic Reagent dfTAT
0 Views •
Cited by 10 •
2015
We describe how to deliver proteins and cell-impermeable small molecules into cultured mammalian cells by a simple co-incubation protocol with a reagent that causes endocytic organelles to become leaky.
FAQs
Release behavior depends on how the molecule is held and how the carrier changes in its environment. Diffusion allows gradual movement out of a carrier, while degradation can release cargo as the carrier breaks down. In responsive systems, pH or enzyme activity serves as a trigger, linking local biological conditions to dosing. These mechanisms help regulate exposure rather than relying only on uncontrolled distribution.
Encapsulation places a small molecule inside a carrier, whereas chemical conjugation links it to the delivery system. Both approaches can be implemented with bioengineered platforms such as nanoparticles, liposomes, hydrogels, or other carriers. The resulting system is designed to improve stability, distribution, or controlled release, which can help the molecule reach a useful biological environment more effectively.
Carrier-based transport addresses several limitations that can reduce a compound’s therapeutic performance. A delivery system can help manage poor solubility, rapid clearance, and limited tissue penetration while supporting more controlled dosing. Improving these properties may increase the amount of active molecule available at a relevant site and reduce unintended effects caused by broad or poorly controlled distribution.
A basic design workflow begins by identifying the small molecule and the biological environment where controlled transport is needed. Researchers then select a carrier format, such as a nanoparticle, liposome, or hydrogel, and decide whether to encapsulate the molecule or chemically conjugate it. They can also incorporate diffusion, degradation, pH, or enzyme-responsive release to shape exposure.
Researchers may choose this approach when a drug’s stability, distribution, tissue penetration, or clearance limits its performance. Targeted drug delivery is one major application because controlled transport can concentrate attention on specific cells, tissues, or biological environments. The goal is to improve efficacy while reducing unintended effects associated with uncontrolled exposure or insufficient delivery to the intended site.
In disease modeling, controlled delivery can provide small-molecule drugs or signaling compounds within a defined biological environment, supporting studies of disease-related responses. In tissue engineering, carriers can help present these compounds in a controlled manner. These uses connect delivery design with biological experiments in which timing, localization, and exposure may influence how cells or tissues respond.
Evaluation can focus on whether the system improves molecule stability, distribution, tissue penetration, or therapeutic performance. Researchers may also examine how the release strategy affects controlled dosing and unintended effects. In regenerative medicine and tissue engineering, the relevant outcome may include how delivered drugs or signaling compounds influence the biological environment, helping connect carrier behavior with the intended experimental or therapeutic objective.