1. Label-free live cell imaging by Confocal Raman Microscopy identifies CHO host and producer cell lines.
- Author
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Prats Mateu B, Harreither E, Schosserer M, Puxbaum V, Gludovacz E, Borth N, Gierlinger N, and Grillari J
- Subjects
- Adalimumab genetics, Adalimumab metabolism, Amine Oxidase (Copper-Containing) genetics, Amine Oxidase (Copper-Containing) metabolism, Animals, Cluster Analysis, Cricetulus, Endoplasmic Reticulum ultrastructure, Humans, Lipids chemistry, Metals chemistry, Molecular Imaging methods, Principal Component Analysis, Proteins chemistry, Recombinant Proteins genetics, Recombinant Proteins metabolism, Spectrum Analysis, Raman methods, CHO Cells cytology, CHO Cells ultrastructure, Microscopy, Confocal methods, Protein Engineering methods
- Abstract
As a possible viable and non-invasive method to identify high producing cells, Confocal Raman Microscopy was shown to be able to differentiate CHO host cell lines and derivative production clones. Cluster analysis of spectra and their derivatives was able to differentiate between different producer cell lines and a host, and also distinguished between an intracellular region of high lipid and protein content that in structure resembles the Endoplasmic Reticulum. This ability to identify the ER may be a major contributor to the identification of high producers. PCA enabled the discrimination even of host cell lines and their subclones with inherently higher production capacity. The method is thus a promising option that may contribute to early, non-invasive identification of high potential candidates during cell line development and possibly could also be used for proof of identity of established production clones., (© 2017 The Authors. Biotechnology Journal published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
- Published
- 2017
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