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Related Experiment Video

Updated: Jun 4, 2026

Analysis of mRNA Nuclear Export Kinetics in Mammalian Cells by Microinjection
11:32

Analysis of mRNA Nuclear Export Kinetics in Mammalian Cells by Microinjection

Published on: December 4, 2010

Preparation and loading of protein samples for microinjection.

Yulia Komarova, John Peloquin, Gary Borisy

    CSH Protocols
    |March 2, 2011
    PubMed
    Summary

    This protocol details preparing protein samples for microinjection. It covers thawing, diluting, centrifuging, and loading proteins into specialized pipettes using front-loading or backfilling techniques.

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    Area of Science:

    • Biochemistry
    • Molecular Biology
    • Biotechnology

    Background:

    • Accurate protein sample preparation is crucial for microinjection techniques.
    • Efficient loading of proteins into microinjection pipettes is essential for experimental success.

    Purpose of the Study:

    • To provide a detailed protocol for preparing protein samples.
    • To describe methods for loading prepared protein samples into pulled microinjection pipettes.

    Main Methods:

    • Protein stock solutions are thawed and optionally diluted.
    • Samples are centrifuged at high speed to eliminate aggregates.
    • Proteins are loaded into microinjection pipettes using front-loading or backfilling procedures.

    Main Results:

    • A standardized protocol for protein sample preparation was established.
    • Two distinct methods for pipette loading (front-loading and backfilling) were detailed.

    Conclusions:

    • This protocol ensures reproducible protein sample preparation for microinjection.
    • The described loading techniques facilitate efficient and reliable delivery of proteins via micropipettes.

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