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Methods for authenticating cell lines.

R J Hay1

  • 1American Type Culture Collection, Rockville, MD 20852.

Developments in Biological Standardization
|January 1, 1992
PubMed
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Cell line authentication is crucial for reliable research. Implementing robust testing for microbial and viral contamination, alongside species verification, ensures data integrity and prevents cross-contamination in cell cultures.

Area of Science:

  • Cell Biology
  • Microbiology
  • Genetics

Background:

  • Mycoplasma contamination affects 10% or more of cell cultures, posing a significant challenge in research.
  • Viral contamination, often without visible effects, presents a more complex issue, potentially introduced via personnel or reagents.
  • Cross-contamination between animal cell lines, both interspecies and intraspecies, is frequently detected, impacting experimental validity.

Purpose of the Study:

  • To outline essential methods for authenticating cell lines.
  • To highlight the persistent problem of microbial and viral contamination in cell cultures.
  • To emphasize the importance of rigorous characterization for maintaining quality assurance in cell stocks.

Main Methods:

  • Employing tests for microbial contamination, including mycoplasma detection using fluorescent dyes and molecular probes.

Related Experiment Videos

  • Implementing viral screening procedures and identifying common problematic viruses.
  • Utilizing advanced techniques such as fluorescent antibody staining, iso-enzyme analysis, cytogenetic evaluation, and DNA fingerprinting for cell line identification.

    • Main Results:

    • Mycoplasma contamination remains a prevalent issue in cell culture, necessitating improved detection and control strategies.
    • Viral contamination is a significant concern, with detection rates in problematic cultures ranging from 17-36% in US-based studies.
    • Cross-contamination between cell lines is common, underscoring the need for comprehensive authentication protocols.

    Conclusions:

    • Effective control of cell line contamination requires awareness and the application of multiple characterization procedures.
    • Well-characterized reference cell stocks are critical for ensuring long-term research consistency and reproducibility.
    • Adopting pre-screened reagents, antibiotic-free cultivation, and advanced detection methods are key to preventing and managing contamination.