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Related Concept Videos

In-vitro Mutagenesis01:16

In-vitro Mutagenesis

To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
In vitro Mutagenesis01:16

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To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
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Alternative drug dissolution methods include the rotating bottle, intrinsic dissolution test, peristalsis, and the Franz diffusion cell method. The rotating bottle method involves meticulously rotating tightly capped controlled-release beads in a temperature-controlled bath. Periodic decanting of samples allows for residue assay, followed by refilling with fresh medium and testing at various pH levels to emulate the gastrointestinal tract conditions.In contrast, the intrinsic dissolution test...

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Automated System for Single Molecule Fluorescence Measurements of Surface-immobilized Biomolecules
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Rapid and improved surface passivation method for Single-Molecule experiments.

Alyssa N Gonneville1, Alyssa E Ward1, Narisa Ria Naidoo1

  • 1Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996, USA.

Methods (San Diego, Calif.)
|January 9, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a rapid, one-step method for surface preparation in single-molecule fluorescence experiments. This new polyethylene glycol (PEG) silane technique significantly reduces assay time while maintaining biomolecule immobilization efficiency.

Keywords:
FRETPEG-SilanePEGylationPhotobleachingSingle-moleculeTIRF microscopy

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Area of Science:

  • Biophysics
  • Biochemistry
  • Surface Chemistry

Background:

  • Single-molecule fluorescence experiments are crucial for studying biomolecular interactions.
  • Immobilizing biomolecules on surfaces is essential but challenged by non-specific interactions.
  • Current polyethylene glycol (PEG) surface treatments are time-consuming.

Purpose of the Study:

  • To develop a faster and more efficient surface preparation method for single-molecule fluorescence studies.
  • To minimize non-specific interactions during biomolecule immobilization.
  • To validate a novel one-step PEGylation technique.

Main Methods:

  • Development of a one-step PEGylation methodology using PEG-Silane.
  • Application of the method to coat microscope slides.
  • Validation using single-molecule fluorescence resonance energy transfer (smFRET) and photobleaching experiments.

Main Results:

  • The new method significantly reduces surface preparation time from hours to minutes.
  • Achieved efficient biomolecule immobilization with minimized non-specific binding.
  • Demonstrated the method's effectiveness across diverse biological samples.

Conclusions:

  • The one-step PEG-Silane method offers a rapid and reproducible alternative for surface preparation in single-molecule fluorescence assays.
  • This advancement streamlines experimental workflows, enabling faster and more efficient biomolecular interaction studies.
  • The technique is broadly applicable, enhancing the utility of single-molecule biophysical methods.