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Detection of mycoplasma in contaminated mammalian cell culture using FTIR microspectroscopy

DOI: 10.1007/s00216-018-0987-9 DOI Help

Authors: Katia Wehbe (Diamond Light Source) , Marzia Vezzalini (University of Verona) , Gianfelice Cinque (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Analytical And Bioanalytical Chemistry , VOL 84

State: Published (Approved)
Published: March 2018

Open Access Open Access

Abstract: Mycoplasma contamination represents a significant problem to the culture of mammalian cells used for research as it can cause disastrous effects on eukaryotic cells by altering cellular parameters leading to unreliable experimental results. Mycoplasma cells are very small bacteria therefore they cannot be detected by visual inspection using a visible light microscope and, thus, can remain unnoticed in the cell cultures for long periods. The detection techniques used nowadays to reveal mycoplasma contamination are time consuming and expensive with each having significant drawbacks. The ideal detection should be simple to perform with minimal preparation time, rapid, inexpensive, and sensitive. To our knowledge, for the first time, we employed Fourier transform infrared (FTIR) microspectroscopy to investigate whether we can differentiate between control cells and the same cells which have been infected with mycoplasmas during the culturing process. Chemometric methods such as HCA and PCA were used for the data analysis in order to detect spectral differences between control and intentionally infected cells, and spectral markers were revealed even at low contamination level. The preliminary results showed that FTIR has the potential to be used in the future as a reliable complementary detection technique for mycoplasma-infected cells.

Journal Keywords: Mycoplasma; Cell infection; FTIR microspectroscopy; Focal plane array; PCA; HCA

Subject Areas: Biology and Bio-materials


Instruments: B22-Multimode InfraRed imaging And Microspectroscopy

Documents:
10.1007_s00216-018-0987-9.pdf