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Cultivation Methods of Spirochetes from Borrelia burgdorferi Sensu Lato Complex and Relapsing Fever Borrelia
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Cultivation Methods of Spirochetes from Borrelia burgdorferi Sensu Lato Complex and Relapsing Fever Borrelia

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Cell-assisted growth of a fastidious spiroplasma

K J Hackett, D E Lynn

    Science (New York, N.Y.)
    |November 15, 1985
    PubMed

    Insights

    Researchers cultured the Colorado potato beetle spiroplasma, previously uncultivable, using insect cell lines. This breakthrough enables further study of microbial pathogenicity and isolation of difficult-to-grow organisms.

    Area of Science:

    • Microbiology
    • Insect Pathology
    • Cell Biology

    Background:

    • The Colorado potato beetle spiroplasma is a significant agricultural pest pathogen.
    • This spiroplasma has proven difficult to cultivate using traditional cell-free methods.
    • Understanding its growth requirements is crucial for developing control strategies.

    Purpose of the Study:

    • To establish a method for culturing the Colorado potato beetle spiroplasma.
    • To investigate the potential of insect cell lines in supporting spiroplasma growth.
    • To assess the viability and infectivity of cultured spiroplasmas.

    Main Methods:

    • Utilized co-culture techniques with various coleopteran and lepidopteran insect cell lines.
    • Grew spiroplasmas in specialized tissue culture media.
    • Monitored spiroplasma titers, infectivity, and motility through multiple passages.

    Main Results:

    • Successfully cultured the Colorado potato beetle spiroplasma in the presence of insect cell lines.
    • Achieved high titers (1.2 x 10^9 spiroplasmas/mL) by the 100th passage.
    • Maintained infectivity and motility of the spiroplasma up to the 15th passage.

    Conclusions:

    • Insect cell culture systems provide a viable method for cultivating previously uncultivable spiroplasmas.
    • This technique may facilitate the isolation and study of other fastidious microorganisms.
    • The system offers a platform for investigating microbial physiology and pathogenicity in vitro.

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