Microarray-based MALDI-TOF mass spectrometry enables monitoring of monoclonal antibody production in batch and perfusion cell cultures

Robert F. Steinhoff, Daniel J. Karst, Fabian Steinebach, Marie R.G. Kopp, Gregor W. Schmidt, Alexander Stettler, Jasmin Krismer, Miroslav Soos, Martin Pabst, More Authors

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Abstract

Cell culture process monitoring in monoclonal antibody (mAb) production is essential for efficient process development and process optimization. Currently employed online, at line and offline methods for monitoring productivity as well as process reproducibility have their individual strengths and limitations. Here, we describe a matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS)-based on a microarray for mass spectrometry (MAMS) technology to rapidly monitor a broad panel of analytes, including metabolites and proteins directly from the unpurified cell supernatant or from host cell culture lysates. The antibody titer is determined from the intact antibody mass spectra signal intensity relative to an internal protein standard spiked into the supernatant. The method allows a semi-quantitative determination of light and heavy chains. Intracellular mass profiles for metabolites and proteins can be used to track cellular growth and cell productivity.

Original languageEnglish
Pages (from-to)33-40
JournalMethods
Volume104
DOIs
Publication statusPublished - 2016
Externally publishedYes

Keywords

  • Antibody
  • Batch
  • Cell culture
  • IgG
  • MALDI
  • Perfusion

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