• Michaela Schwaiger, Evelyn Rampler, Gerrit Hermann, Walter Miklos, Walter Berger, Gunda Koellensperger
    Anion-Exchange Chromatography Coupled to High-Resolution Mass Spectrometry: A Powerful Tool for Merging Targeted and Non-targeted Metabolomics
  • Rugova, A., Puschenreiter, M., Koellensperger, G., Hann, S.
    Elucidating rhizosphere processes by mass spectrometry – A review

    Analytica Chimica Acta 956, pp. 1-13
  • Ortmayr, K., Charwat, V., Kasper, C., Hann, S., Koellensperger, G.
    Uncertainty budgeting in fold change determination and implications for non-targeted metabolomics studies in model systems

    Analyst 142(1), pp. 80-90


  • Bamonti, L., Theiner, S., Rohr-Udilova, N., Keppler, B.K., Koellensperger, G.
    Accurate high throughput quantification of selenium in biological samples-the potential of combining isotope dilution ICP-tandem mass spectrometry with flow injection
    Journal of Analytical Atomic Spectrometry 31(11), pp. 2227-2232
  • Mairinger, T., Wozniak-Knopp, G., Rüker, F., Koellensperger, G., Hann, S.
    Element labeling of antibody fragments for ICP-MS based immunoassay

    Journal of Analytical Atomic Spectrometry 31(11), pp. 2330-2337
  • Goenaga-Infante, H., Koellensperger, G.
    It is time for a special issue dedicated to elemental speciation analysis
    Journal of Analytical Atomic Spectrometry 31(9), pp. 1704-1705
  • Koellensperger, G., Galanski, M., Keppler, B.K., Hann, S.
    Turbulent flow chromatography in combination with HPLC-ICP-MS for high-throughput analysis of free, intact metal based drugs in biomedical samples
    Journal of Analytical Atomic Spectrometry 31(9), pp. 1811-1817
  • Ortmayr, K., Causon, T.J., Hann, S., Koellensperger, G.
    Increasing selectivity and coverage in LC-MS based metabolome analysis

    Trends in Analytical Chemistry 82, pp. 358-366B
  • Bytzek, A.K., Koellensperger, G., Keppler, B.K., Hartinger, C.G.
    Biodistribution of the novel anticancer drug sodium trans-[tetrachloridobis(1H-indazole)ruthenate(III)] KP-1339/IT139 in nude BALB/c mice and implications on its mode of action
    Journal of Inorganic Biochemistry160, pp. 250-255
  • Pelivan, K., Miklos, W., Van Schoonhoven, S., (...), Kowol, C.R., Keppler, B.K.
    Differences in protein binding and excretion of Triapine and its Fe(III) complex
    Journal of Inorganic Biochemistry 160, pp. 61-69
  • Theiner, S., Schreiber-Brynzak, E., Jakupec, M. A., Galanski, M., Koellensperger, G., Keppler, B. K.
    LA-ICP-MS imaging in multicellular tumor spheroids – a novel tool in the preclinical development of metal-based anticancer drugs
    Metallomics, 2016 8(4), pp. 398-402
  • Hermann, G., Hyrup Møller, L., Gammelgaard, B., Hohlweg, J., Mattanovich, D., Hann, S., Koellensperger, G.
    In vivo synthesized 34S enriched amino acid standards for species specific isotope dilution of proteins
    Journal of Analytical Atomic Spectrometry, 31(9), pp. 1830-1835


  • Rampler, E., Stranzl, T., Orban-Nemeth, Z., Hollenstein, D. M., Hudecz, O., Schlögelhofer, P., Mechtler, K.
    Comprehensive Cross-Linking Mass Spectrometry Reveals Parallel Orientation and Flexible Conformations of Plant HOP2−MND1
    Journal of Proteome Research, 2015; 14 (12), pp 5048-5062. 
  • Mairinger, T., Steiger, M., Nocon, J., Mattanovich, D., Koellensperger, G., Hann, S.
    Gas Chromatography-Quadrupole Time-of-Flight Mass Spectrometry-Based Determination of Isotopologue and Tandem Mass Isotopomer Fractions of Primary Metabolites for 13C-Metabolic Flux Analysis
    Analytical Chemistry, 87 (23), pp. 11792-11802. 
  • Neubauer, S., Chu, D.B., Marx, H., Sauer, M., Hann, S., Koellensperger, G.
    LC-MS/MS-based analysis of coenzyme A and short-chain acyl-coenzyme A thioesters
    Analytical and Bioanalytical Chemistry, 407 (22), pp. 6681-6688. 
  • Chu, D.B., Troyer, C., Mairinger, T., Ortmayr, K., Neubauer, S., Koellensperger, G., Hann, S.
    Isotopologue analysis of sugar phosphates in yeast cell extracts by gas chromatography chemical ionization time-of-flight mass spectrometry
    Analytical and Bioanalytical Chemistry, 407 (10), art. no. 8521, pp. 2865-2875. 
  • Hann, S., Dernovics, M., Koellensperger, G.
    Elemental analysis in biotechnology
    Current Opinion in Biotechnology, 31, pp. 93-100. 
  • Ortmayr, K., Hann, S., Koellensperger, G.
    Complementing reversed-phase selectivity with porous graphitized carbon to increase the metabolome coverage in an on-line two-dimensional LC-MS setup for metabolomics
    Analyst, 140 (10), pp. 3465-3473. 
  • Megson, Z.A., Pittenauer, E., Duda, K.A., Engel, R., Ortmayr, K., Koellensperger, G., Mach, L., Allmaier, G., Holst, O., Messner, P., Schäffer, C.
    Inositol-phosphodihydroceramides in the periodontal pathogen Tannerella forsythia: Structural analysis and incorporation of exogenous myo-inositol
    Biochimica et Biophysica Acta - Molecular and Cell Biology of Lipids, 1851 (11), pp. 1417-1427. 
  • Graf, M.M.H., Sucharitakul, J., Bren, U., Chu, D.B., Koellensperger, G., Hann, S., Furtmüller, P.G., Obinger, C., Peterbauer, C.K., Oostenbrink, C., Chaiyen, P., Haltrich, D.
    Reaction of pyranose dehydrogenase from Agaricus meleagris with its carbohydrate substrates
    FEBS Journal, 282 (21), pp. 4218-4241. 
  • Rußmayer, H., Buchetics, M., Gruber, C., Valli, M., Grillitsch, K., Modarres, G., Guerrasio, R., Klavins, K., Neubauer, S., Drexler, H., Steiger, M., Troyer, C., Al Chalabi, A., Krebiehl, G., Sonntag, D., Zellnig, G., Daum, G., Graf, A.B., Altmann, F., Koellensperger, G., Hann, S., Sauer, M., Mattanovich, D., Gasser, B.
    Systems-level organization of yeast methylotrophic lifestyle
    BMC Biology, 80 (13)
  • Pelivan, K., Miklos, W., van Schoonhoven, S., Koellensperger, G., Gille, L., Berger, W., Heffeter, P., Kowol, C.R., Keppler, B.K.
    Differences in protein binding and excretion of Triapine and its Fe(III) complex
    Journal of Inorganic Biochemistry 
  • Russmayer, H., Troyer, C., Neubauer, S., Steiger, M.G., Gasser, B., Hann, S., Koellensperger, G., Sauer, M., Mattanovich, D.
    Metabolomics sampling of Pichia pastoris revisited: Rapid filtration prevents metabolite loss during quenching
    FEMS Yeast Research, 15 (6) 
  • Ortmayr, K., Schwaiger, M., Hann, S., Koellensperger, G.
    An integrated metabolomics workflow for the quantification of sulfur pathway intermediates employing thiol protection with N-ethyl maleimide and hydrophilic interaction liquid chromatography tandem mass spectrometry
    Analyst, 140 (22), pp. 7687-7695. 
  • Schindlegger, Y., Oburger, E., Puschenreiter, M., Stingeder, G., Koellensperger, G., Hann, S.
    Speciation of 2′-deoxymugineic acid-metal complexes in top soil extracts by multi-modal stationary phase LC-ICP-MS
    Journal of Analytical Atomic Spectrometry, 30 (6), pp. 1345-1355. 
  • Miklos, W., Pelivan, K., Kowol, C.R., Pirker, C., Dornetshuber-Fleiss, R., Spitzwieser, M., Englinger, B., van Schoonhoven, S., Cichna-Markl, M., Koellensperger, G., Keppler, B.K., Berger, W., Heffeter, P.
    Triapine-mediated ABCB1 induction via PKC induces widespread therapy unresponsiveness but is not underlying acquired triapine resistance
    Cancer Letters, 361 (1), pp. 112-120.


  • Reduced quenching and extraction time for mammalian cells using filtration and syringe extraction  Hernández Bort, J.A., Shanmukam, V., Pabst, M., Windwarder, M., Neumann, L., Alchalabi, A., Krebiehl, G., Koellensperger, G., Hann, S., Sonntag, D., Altmann, F., Heel, C., Borth, N, Journal of Biotechnology, 2014,  DOI: 10.1016/j.jbiotec.2014.04.01
  • Nocon, J., Steiger, M. G., Pfeffer, M., Sohn, S. B., Kim, T. Y., Maurer, M., Russmayer, H., Pflügl, S., Haberhauer-Troyer, C., Ortmayr, K., Hann, S., Koellensperger, G., Gasser, B., Lee, S. Y., Mattanovich, D. (2014) Model based engineering of Pichia pastoris central metabolism enhances recombinant protein production. Metab. Eng., doi: 10.1016/j.ymben.2014.05.01
  • K. Ortmayr, J. Nocon, B. Gasser, D. Mattanovich, S. Hann, G. Koellensperger, Sample preparation workflow for LC-MS/MS based analysis of nicotinamide adenine dinucleotide phosphate cofactors in yeast, J. Sep. Sci., 2014 in press
  • K. Klavins, H. Drexler, S. Hann, G. Koellensperger, Quantitative Metabolite Profiling Utilizing Parallel Column Analysis for Simultaneous Reversed-Phase and Hydrophilic Interaction Liquid Chromatography Separations Combined with Tandem Mass Spectrometry, Anal. Chem., 2014, 86 (9), pp 4145–4150
  • Hermann, G., Heffeter, P., Kryeziu, K., Berger, W., Hann, S., Koellensperger, G., The study of reduced versus oxidized glutathione in cancer cell models employing isotopically labelled standards, (2014) Analytical Methods, 6 (9), pp. 3086-3094.
  • Klavins, K., Chu, D.B., Hann, S., Koellensperger, G. Fully automated on-line two-dimensional liquid chromatography in combination with ESI MS/MS detection for quantification of sugar phosphates in yeast cell extracts, (2014) Analyst, 139 (6), pp. 1512-1520.
  • Fischer, L., Zipfel, B., Koellensperger, G., Kovac, J., Bilz, S., Kunkel, A., Venzago, C., Hann, S. Flow injection combined with ICP-MS for accurate high throughput analysis of elemental impurities in pharmaceutical products according to USP <232>/<233>, (2014) Journal of Pharmaceutical and Biomedical Analysis, 95, pp. 121-129.
  • Guerrasio, R., Haberhauer-Troyer, C., Mattanovich, D., Koellensperger, G., Hann, S., Metabolic profiling of amino acids in cellular samples via zwitterionic sub-2 μm particle size HILIC-MS/MS and a uniformly 13C labeled internal standard Amino Acid Analysis, (2014) Analytical and Bioanalytical Chemistry, 406 (3), pp. 915-922.
  • Chu, D.B., Klavins, K., Koellensperger, G., Hann, S., Speciation analysis of sugar phosphates via anion exchange chromatography combined with inductively coupled plasma dynamic reaction cell mass spectrometry-optimization for the analysis of yeast cell extracts, (2014) Journal of Analytical Atomic Spectrometry, 29 (5), pp. 915-925.
  • Schindlegger, Y., Oburger, E., Gruber, B., Schenkeveld, W.D.C., Kraemer, S.M., Puschenreiter, M., Koellensperger, G., Hann, S., Accurate LC-ESI-MS/MS quantification of 2'-deoxymugineic acid in soil and root related samples employing porous graphitic carbon as stationary phase and a 13C4-labeled internal standard, (2014) Electrophoresis, 35 (9), pp. 1375-1385.
  • Mueller, L., Mairinger, T., Hermann, G., Koellensperger, G., Hann, S., Characterization of metal-tagged antibodies used in ICP-MS-based immunoassays, (2014) Analytical and Bioanalytical Chemistry, 406 (1), pp. 163-169.