• World Neurosurg · Dec 2022

    Deciphering the biochemical similarities and differences among human neuroglial cells and glioma cells using FTIR spectroscopy.

    • Qijia Wu, Dongsheng Kong, Wenyu Peng, Rui Zong, Xinguang Yu, and Shiyu Feng.
    • Department of Neurosurgery, Affiliated Hospital of Hebei University, Baoding, China; Department of Neurosurgery, Chinese PLA General Hospital, Beijing, China.
    • World Neurosurg. 2022 Dec 1; 168: e562e569e562-e569.

    BackgroundThe use of Fourier transform infrared spectroscopy to identify the peritumoral tissue of gliomas proves the potential of this technique to distinguish normal brain tissues from glioma tissues. However, due to the heterogeneity of gliomas, it is difficult to characterize the representative spectra of normal brain tissues and glioma tissues. The linear spectra of major cellular components, such as microglia, astrocytes, and glioma cells, were obtained to quantify the biochemical changes between healthy cells and tumor cells, and provide supporting data for the final distinction between tumor and normal brain tissue.MethodsFourier transform infrared was used to measure human astrocytes, microglia (HM1900), and glioma cells (U87, BT325), and the cellular components of the 4 types of cells were analyzed by means of average spectra, second-derivative spectra, principal component analysis, hierarchical cluster analysis, and difference spectra.ResultsThe proteomics, lipidomics, genomics, and metabolic statuses of the cells were different. The amide I, lipid, and nuclear acid regions of the spectra are the most obvious regions to use for distinguishing the 4 types of cells.ConclusionsWe conclude that an improved understanding of both similarities and differences in the cellular components of astrocytes, microglia, and glioma cells can help us better understand the heterogeneity of gliomas. We suggest that targeting cellular metabolism (protein, lipid, and nuclear acids) is helpful to distinguish between normal brain tissue and glioma tissue, which has broad application prospects.Copyright © 2022 Elsevier Inc. All rights reserved.

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