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NIST lipidomics workflow questionnaire: an assessment of community-wide methodologies and perspectives

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Abstract

Introduction

Efforts to harmonize lipidomic methodologies have been limited within the community. Here, we aimed to capitalize on the recent National Institute of Standards and Technology lipidomics interlaboratory comparison exercise by implementing a questionnaire that assessed current methodologies, quantitation strategies, standard operating procedures (SOPs), and quality control activities employed by the lipidomics community.

Objectives

Lipidomics is a rapidly developing field with diverse applications. At present, there are no community-vetted methods to assess measurement comparability or data quality. Thus, a major impetus of this questionnaire was to profile current efforts, highlight areas of need, and establish future objectives in an effort to harmonize lipidomics workflows.

Methods

The 54-question survey inquired about laboratory demographics, lipidomic methodologies and SOPs, analytical platforms, quantitation, reference materials, quality control procedures, and opinions regarding challenges existing within the community.

Results

A total of 125 laboratories participated in the questionnaire. A broad overview of results highlighted a wide methodological diversity within current lipidomic workflows. The impact of this diversity on lipid measurement and quantitation is currently unknown and needs to be explored further. While some laboratories do incorporate SOPs and quality control activities, these concepts have not been fully embraced by the community. The top five perceived challenges within the lipidomics community were a lack of standardization amongst methods/protocols, lack of lipid standards, software/data handling and quantification, and over-reporting/false positives.

Conclusion

The questionnaire provided an overview of current lipidomics methodologies and further promoted the need for community-accepted guidelines and protocols. The questionnaire also served as a platform to help determine and prioritize metrological issues to be investigated.

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Acknowledgements

This study was partially funded by NIH Grant #U24 DK097209 (R.A.Y.). This research was done in collaboration between Core 1 and Core 3 of the Southeast Center for Metabolomics (SECIM) <http://secim.ufl.edu/>.

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Authors and Affiliations

  1. Marine Biochemical Sciences Group, National Institute of Standards and Technology, Hollings Marine Laboratory, 331 Fort Johnson Road, Charleston, SC, 29412, USA

    John A. Bowden & Candice Z. Ulmer

  2. Organic Chemical Measurement Science Group, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, 20899, USA

    Christina M. Jones

  3. Department of Chemistry, University of Florida, 214 Leigh Hall, Gainesville, FL, 32611, USA

    Jeremy P. Koelmel & Richard A. Yost

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  1. John A. Bowden
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  2. Candice Z. Ulmer
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  3. Christina M. Jones
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  4. Jeremy P. Koelmel
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  5. Richard A. Yost
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Correspondence to John A. Bowden.

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Certain commercial equipment or instruments are identified in the paper to specify adequately the experimental procedures. Such identification does not imply recommendations or endorsement by NIST; nor does it imply that the equipment or instruments are the best available for the purpose.

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Bowden, J.A., Ulmer, C.Z., Jones, C.M. et al. NIST lipidomics workflow questionnaire: an assessment of community-wide methodologies and perspectives. Metabolomics 14, 53 (2018). https://doi.org/10.1007/s11306-018-1340-1

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