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Analytical and Bioanalytical Chemistry

, Volume 397, Issue 8, pp 3185–3193 | Cite as

Mass spectral imaging and profiling of neuropeptides at the organ and cellular domains

  • Ruibing Chen
  • Lingjun LiEmail author
Trends

Abstract

Matrix-assisted laser desorption/ionization (MALDI) mass spectrometry (MS) is a rapid and sensitive analytical method that is well suited for determining molecular weights of peptides and proteins from complex samples. MALDI-MS can be used to profile the peptides and proteins from single-cell and small tissue samples without the need for extensive sample preparation. Furthermore, the recently developed MALDI imaging technique enables mapping of the spatial distribution of signaling molecules in tissue samples. Several examples of signaling molecule analysis at the single-cell and single-organ levels using MALDI-MS technology are highlighted followed by an outlook of future directions.

Figure

Overview of tissue-based mass spectrometric analysis strategies for neuropeptide discovery and distribution study. Direct MALDI analysis can be performed on single cells or small piece of tissues for neuropeptide profiling and novel neuropeptide discovery. MALDI imaging is powerful to study the spatial distribution of neuropeptides in larger and more complex organs, such as brain.

Keywords

Neuropeptides Mass spectrometric imaging MALDI-MS Direct tissue profiling Single-cell measurements 

Notes

Acknowledgement

Preparation of this manuscript was supported in part by a National Science Foundation CAREER Award (CHE-0449991), National Institutes of Health through grant 1R01DK071801. L.L. acknowledges an Alfred P. Sloan Research Fellowship and Vilas Associate Award.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Department of Chemistry & School of PharmacyUniversity of Wisconsin-MadisonMadisonUSA
  2. 2.Research Center of Basic Medical SciencesTianjin Medical UniversityTianjinChina

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