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Adenosine phosphorylase activity as a technique for detection of mycoplasmas in biological media
Abstract:
The importance of cell culture contamination by mycoplasmas is well recognized, but the means used to detect such contamination still need improvement. Most mycoplasmas possess an enzyme, adenosine phosphorylase, which is not found in cell lines. We used the ultramicromethod of Uitendaal et al. to detect the presence of mycoplasmas in sera and in tissue culture medium. The absence of adenosine phosphorylase activity seems to be the best guarantee that a serum is not contaminated by mycoplasmas. This test is also most efficient for the detection of mycoplasmas in tissue or cell cultures in vitro.
Insights
Detecting mycoplasma contamination in cell cultures can be improved. A new test for adenosine phosphorylase activity effectively identifies contamination in sera and tissue culture media, ensuring cell line integrity.
Area of Science:
- Cell Biology
- Microbiology
- Biotechnology
Background:
- Mycoplasma contamination poses a significant challenge in cell culture, impacting research reproducibility.
- Current detection methods for mycoplasma contamination require enhancement for greater efficiency and reliability.
Purpose of the Study:
- To introduce and validate an improved method for detecting mycoplasma contamination in cell culture components.
- To assess the utility of adenosine phosphorylase activity as a specific marker for mycoplasma detection.
Main Methods:
- Utilized the Uitendaal et al. ultramicromethod for adenosine phosphorylase activity detection.
- Applied the method to analyze sera and tissue culture media for mycoplasma presence.
Main Results:
- Adenosine phosphorylase was identified as an enzyme present in most mycoplasmas but absent in cell lines.
- The absence of adenosine phosphorylase activity proved to be a reliable indicator of mycoplasma-free sera.
- The test demonstrated high efficiency in detecting mycoplasma contamination within in vitro cell cultures.
Conclusions:
- The detection of adenosine phosphorylase activity offers a robust and efficient method for identifying mycoplasma contamination.
- This assay provides a reliable guarantee against mycoplasma contamination in sera and cell cultures.
- The findings support the adoption of this enzymatic test for routine mycoplasma screening in cell culture facilities.