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Elimination of mycoplasmas from cell cultures utilizing hyperimmune sera
Abstract:
Eighteen cell lines contaminated with various mycoplasmas have been treated with hyperimmune sera and mycoplasmas have been eradicated from all. After treatment the cell lines have been observed for a least one year and they are still free from mycoplasma contamination as ascertained by four independent mycoplasma detection assays. The hyperimmune sera used were of high titer, type-specific and growth-inhibiting. These sera were produced by immunization of rabbits with purified membranes from Mycoplasma orale, M. arginini, M. hominis, M. fermentans, M. hyorhinis and Acholeplasma laidlawii. In addition to elimination of mycoplasmas from cell cultures we have successfully used these sera for detection and typing of mycoplasma contamination in cell cultures.
Insights
Hyperimmune sera effectively eradicated mycoplasma contamination from 18 cell lines. Cell cultures remained mycoplasma-free for over a year, confirmed by multiple detection assays, demonstrating a reliable method for cell culture decontamination.
Area of Science:
- Cell Biology
- Microbiology
- Immunology
Background:
- Mycoplasma contamination is a common and detrimental issue in cell cultures.
- Existing methods for mycoplasma detection and eradication can be laborious and may not always be effective.
Purpose of the Study:
- To evaluate the efficacy of hyperimmune sera for eradicating mycoplasma contamination in cell lines.
- To assess the long-term effectiveness of this treatment.
- To explore the utility of hyperimmune sera for mycoplasma detection and typing.
Main Methods:
- Production of high-titer, type-specific, growth-inhibiting hyperimmune sera against common mycoplasma species (Mycoplasma orale, M. arginini, M. hominis, M. fermentans, M. hyorhinis, and Acholeplasma laidlawii).
- Treatment of 18 mycoplasma-contaminated cell lines with the prepared hyperimmune sera.
- Long-term observation (≥1 year) of treated cell lines.
- Confirmation of mycoplasma eradication using four independent detection assays.
Main Results:
- Complete eradication of mycoplasma contamination from all 18 treated cell lines.
- Sustained absence of mycoplasma contamination for over one year post-treatment.
- Successful application of the hyperimmune sera for both detection and typing of mycoplasma contaminants.
Conclusions:
- Hyperimmune sera provide a highly effective and durable solution for eliminating mycoplasma contamination in cell cultures.
- This approach offers a reliable method for both treating and identifying mycoplasma infections in cell line repositories.