• Jasmin Krismer
  • Jens Sobek
  • Robert F. Steinhoff
  • Rolf Brönnimann
  • Martin Pabst
  • Renato Zenobi

Mass spectrometry based metabolomics is the highly multiplexed, label-free analysis of small molecules such as metabolites or lipids in biological systems, and thus one of the most direct ways to characterize phenotypes. However, the phenotyping of populations with single-cell resolution is a great challenge due to the small number of molecules contained in an individual cell. Here we describe a microarray-based sample preparation workflow for MALDI mass spectrometry that has single-cell sensitivity and allows high-throughput analysis of lipids and pigments in single algae cells. The microarray targets receive individual cells in 1430 separate spots that allow the cells to be lysed individually without cross-contamination. Using positive ion mode and 2,5-dihydroxybenzoic acid as the MALDI matrix, the mass spectra unveil information about the relative composition of more than 20 different lipids/pigments in each individual cell within the population. Thus, the method allows the analysis of cellular phenotypes in a population on a completely new level.

Original languageEnglish
Title of host publicationSingle Cell Metabolism
PublisherHumana Press
Pages113-124
DOIs
Publication statusPublished - 2020

Publication series

NameMethods in Molecular Biology
Volume2064
ISSN (Print)1064-3745
ISSN (Electronic)1940-6029

    Research areas

  • Chlamydomonas reinhardtii, High-throughput analysis, Lipid profiling, MALDI-mass spectrometry, Single-cell analysis

ID: 68382607