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Biochemical Analysis of Leukocytes after In Vitro and In Vivo Activation with Bacterial and Fungal Pathogens Using Raman Spectroscopy

Title data

Pistiki, Aikaterini ; Ramoji, Anuradha ; Ryabchykov, Oleg ; Thomas-Rüddel, Daniel ; Press, Adrian T. ; Makarewicz, Oliwia ; Giamarellos-Bourboulis, Evangelos J. ; Bauer, Michael ; Bocklitz, Thomas ; Popp, Jürgen ; Neugebauer, Ute:
Biochemical Analysis of Leukocytes after In Vitro and In Vivo Activation with Bacterial and Fungal Pathogens Using Raman Spectroscopy.
In: International Journal of Molecular Sciences. Vol. 22 (2021) Issue 19 . - 10481.
ISSN 1422-0067
DOI: https://doi.org/10.3390/ijms221910481

Abstract in another language

Biochemical information from activated leukocytes provide valuable diagnostic information. In this study, Raman spectroscopy was applied as a label-free analytical technique to characterize the activation pattern of leukocyte subpopulations in an in vitro infection model. Neutrophils, monocytes, and lymphocytes were isolated from healthy volunteers and stimulated with heat-inactivated clinical isolates of Candida albicans, Staphylococcus aureus, and Klebsiella pneumoniae. Binary classification models could identify the presence of infection for monocytes and lymphocytes, classify the type of infection as bacterial or fungal for neutrophils, monocytes, and lymphocytes and distinguish the cause of infection as Gram-negative or Gram-positive bacteria in the monocyte subpopulation. Changes in single-cell Raman spectra, upon leukocyte stimulation, can be explained with biochemical changes due to the leukocyte’s specific reaction to each type of pathogen. Raman spectra of leukocytes from the in vitro infection model were compared with spectra from leukocytes of patients with infection (DRKS-ID: DRKS00006265) with the same pathogen groups, and a good agreement was revealed. Our study elucidates the potential of Raman spectroscopy-based single-cell analysis for the differentiation of circulating leukocyte subtypes and identification of the infection by probing the molecular phenotype of those cells.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Raman microspectroscopy; leukocytes; infection model; Staphylococcus aureus; Klebsiella pneumoniae; Candida albicans; neutrophil; PBMC; monocyte; lymphocyte
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Computer Science > Lehrstuhl Künstliche Intelligenz in der Mikroskopie und Spektroskopie > Lehrstuhl Künstliche Intelligenz in der Mikroskopie und Spektroskopie - Univ.-Prof. Dr. Thomas Wilhelm Bocklitz
Result of work at the UBT: No
DDC Subjects: 000 Computer Science, information, general works > 004 Computer science
500 Science > 530 Physics
Date Deposited: 11 May 2023 08:59
Last Modified: 11 May 2023 08:59
URI: https://eref.uni-bayreuth.de/id/eprint/76408