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Related Concept Videos

Micelles01:30

Micelles

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Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...
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Factors Affecting Dissolution: Particle Size and Effective Surface Area01:23

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Dissolution kinetics, an essential aspect of oral drug delivery, is significantly influenced by the drug's particle size. According to the Noyes-Whitney dissolution model, the dissolution rate correlates directly with the drug's surface area. The larger the surface area, the higher the drug's solubility in water, leading to a faster drug dissolution rate. Reducing particle size increases the effective surface area, enhancing the dissolution process. Micronization and nanosizing are...
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Related Experiment Video

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Cellular Affinity of Particle-Stabilized Emulsion to Boost Antigen Internalization
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Effects of the Microparticle Shape on Cellular Uptake.

Yuanzu He1, Kinam Park1

  • 1Departments of Biomedical Engineering and Pharmaceutics, Purdue University , West Lafayette, Indiana 47907, United States.

Molecular Pharmaceutics
|February 25, 2016
PubMed
Summary

Particle shape significantly influences cellular uptake. Microparticles with higher aspect ratios and sharper angles demonstrate increased adhesion and internalization by cancer cells, enhancing drug delivery potential.

Keywords:
aspect ratiocellular uptakeendocytosismicroparticle shapesize

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Cell Biology

Background:

  • Particle characteristics like size, charge, and shape influence cellular uptake via endocytosis.
  • Optimizing drug carrier design can improve drug efficacy through enhanced cellular uptake.
  • Spherical and cylindrical shapes have been previously investigated for their endocytic properties.

Purpose of the Study:

  • To investigate the impact of diverse microparticle shapes on cellular uptake.
  • To understand how particle geometry, specifically aspect ratio and angularity, affects cancer cell internalization.

Main Methods:

  • Preparation of microparticles in various shapes, including keyboard character forms.
  • Examination of the cellular uptake efficiency of these microparticles by cancer cells.

Main Results:

  • Microparticles with higher aspect ratios and sharper angular features exhibited increased cell adhesion.
  • These distinct shapes showed a greater propensity for internalization by cancer cells.
  • The local interaction dynamics between the particle and cell membrane were identified as critical factors.

Conclusions:

  • Microparticle shape is a critical determinant of cellular uptake efficiency.
  • Designing particles with specific geometric features, such as high aspect ratios and sharp angles, can enhance cancer cell targeting and drug delivery.
  • Understanding particle-cell membrane interactions is key to optimizing nanocarrier design for improved therapeutic outcomes.