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Related Experiment Video

Updated: Nov 1, 2025

Bead Loading Proteins and Nucleic Acids into Adherent Human Cells
07:28

Bead Loading Proteins and Nucleic Acids into Adherent Human Cells

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Bead Loading Proteins and Nucleic Acids into Adherent Human Cells.

Charlotte Ayn Cialek1, Gabriel Galindo1, Amanda Lynn Koch1

  • 1Department of Biochemistry and Molecular Biology, Colorado State University.

Journal of Visualized Experiments : Jove
|June 21, 2021
PubMed
Summary

Introducing macromolecules like DNA, RNA, and proteins into live cells is now simpler and cheaper with bead loading. This cost-effective method temporarily disrupts the cell membrane, enabling efficient molecule entry without harming cell viability or proliferation.

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Area of Science:

  • Cell Biology
  • Biotechnology
  • Molecular Biology

Background:

  • Introducing exogenous molecules into live cells is crucial for various biological studies, including live-cell imaging.
  • Current methods for cell loading often suffer from low efficiency, high costs, and complex technical requirements.
  • A need exists for a simple, cost-effective, and efficient method to deliver macromolecules into live mammalian cells.

Purpose of the Study:

  • To describe a novel, simple, and cost-effective technique for loading DNA, RNA, and proteins into live human cells.
  • To present bead loading as a viable alternative to existing cell loading methods.
  • To detail the procedure, adaptations, variations, and limitations of bead loading for scientific applications.

Main Methods:

  • The study introduces a bead loading technique that utilizes temporary mechanical disruption of the cell membrane.
  • This method allows for the entry of macromolecules such as DNA, RNA, and proteins into adherent, live mammalian cells.
  • The procedure is designed to be cost-effective, with costs under $0.01 USD per experiment.

Main Results:

  • Bead loading demonstrates high efficiency in introducing various macromolecules into live cells.
  • The method is significantly more cost-effective than existing cell loading techniques.
  • Cell viability and proliferation remain largely unaffected by the bead loading process, indicating minimal cellular stress.

Conclusions:

  • Bead loading offers a simple, inexpensive, and efficient method for introducing macromolecules into live mammalian cells.
  • This technique is particularly suitable for live-cell imaging applications but is also applicable to other research requiring intracellular delivery.
  • The method overcomes many limitations of current cell loading strategies, making it broadly accessible for biological research.