Nanoparticle-assisted laser desorption/ionization (nano- PALDI)-based imaging mass spectrometry (IMS) and its application to brain sciences

Saira Hameed, Yuki Sugiura, Yoshishige Kimura, Kalmesh Kumar Shrivas, Mitsutoshi Setou

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

Imaging mass spectrometry (IMS; also referred to as mass spectrometry imaging [MSI]) is an emerging mass-spectrometrybased imaging technique that enables visualization of the distribution of various biomolecules in biological tissue sections. This technique, which can be used for a variety of tissues having vast structures, was initially developed as a tool for protein imaging. However, because of the general versatility of IMS and the lack of established imaging technology for small organic molecules, the number of studies reporting IMS of small molecules has recently increased. In fact, IMS is an effective technique for the visualization of endogenous small metabolites, especially lipids, facilitated by the unique advantages of massspectrometry- based molecular detection. For IMS, the choice of a proper analyte ionization technique is critical. Matrix-assisted laser desorption/ionization (MALDI) has been regarded as the most effective analyte ionization method and has been applied to the analyses of brain disorders, such as Alzheimer’s and Parkinson’s diseases. Despite the promising capability of MALDIbased IMS for imaging of small metabolites, this technique suffers from several critical drawbacks, especially with regard to spatial resolution. One of the critical limitations of the spatial resolution of MALDI-IMS is the size of the organic matrix crystal and analyte migration during the matrix-crystallization process. To overcome these problems, we report herein a nanoparticle (NP)-assisted laser desorption/ionization (nano-PALDI)-based IMS technique, in which NPs are used as the ionization-enhancing reagent and the organic matrix crystallization process is eliminated. Another important advantage of the use of NPs for IMS comes from the recently increasing availability of various NPs with different coremetals, surface modifications, and particle diameters, which has expanded the range of molecular species that can be analyzed by means of this technique, to include species that cannot be ionized by MALDI-IMS. Hence, we believe that this new approach will lead to a better understanding of physiological processes as well as the diagnosis and pathophysiology of complex biological process, especially in the brain. This chapter summarizes the recent technological developments in the field of IMS and also describes the utilization of nano-PALDI in IMS as an attractive alternative to traditional MALDI-IMS.

Original languageEnglish
Title of host publicationNanomedicine and the Nervous System
PublisherCRC Press
Pages97-118
Number of pages22
ISBN (Electronic)9781466505117
ISBN (Print)9781578087280
Publication statusPublished - 2012 Jan 1

Fingerprint

Nanoparticles
Ionization
Mass spectrometry
Desorption
Brain
Mass Spectrometry
Lasers
Imaging techniques
Matrix-Assisted Laser Desorption-Ionization Mass Spectrometry
Crystallization
Physiological Phenomena
Biological Phenomena
Metabolites
Brain Diseases
Tandem Mass Spectrometry
Parkinson Disease
Alzheimer Disease
Visualization
Tissue
Technology

ASJC Scopus subject areas

  • Medicine(all)
  • Engineering(all)

Cite this

Hameed, S., Sugiura, Y., Kimura, Y., Shrivas, K. K., & Setou, M. (2012). Nanoparticle-assisted laser desorption/ionization (nano- PALDI)-based imaging mass spectrometry (IMS) and its application to brain sciences. In Nanomedicine and the Nervous System (pp. 97-118). CRC Press.

Nanoparticle-assisted laser desorption/ionization (nano- PALDI)-based imaging mass spectrometry (IMS) and its application to brain sciences. / Hameed, Saira; Sugiura, Yuki; Kimura, Yoshishige; Shrivas, Kalmesh Kumar; Setou, Mitsutoshi.

Nanomedicine and the Nervous System. CRC Press, 2012. p. 97-118.

Research output: Chapter in Book/Report/Conference proceedingChapter

Hameed, S, Sugiura, Y, Kimura, Y, Shrivas, KK & Setou, M 2012, Nanoparticle-assisted laser desorption/ionization (nano- PALDI)-based imaging mass spectrometry (IMS) and its application to brain sciences. in Nanomedicine and the Nervous System. CRC Press, pp. 97-118.
Hameed S, Sugiura Y, Kimura Y, Shrivas KK, Setou M. Nanoparticle-assisted laser desorption/ionization (nano- PALDI)-based imaging mass spectrometry (IMS) and its application to brain sciences. In Nanomedicine and the Nervous System. CRC Press. 2012. p. 97-118
Hameed, Saira ; Sugiura, Yuki ; Kimura, Yoshishige ; Shrivas, Kalmesh Kumar ; Setou, Mitsutoshi. / Nanoparticle-assisted laser desorption/ionization (nano- PALDI)-based imaging mass spectrometry (IMS) and its application to brain sciences. Nanomedicine and the Nervous System. CRC Press, 2012. pp. 97-118
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