American Society of Hirudotherapy

Specific MALDI-MSI: Tag-Mass

Basic science / preclinical published in Methods in molecular biology (Clifton, N.J.) (2010)

Last Updated: June 18, 2026Reviewed by: ASH Editorial Board
Research article — evidence reviewArticle reference
Evidence: Preclinical (animal)Genomics & ProteomicsStauber J et al. · Methods in molecular biology (Clifton, N.J.), 2010

Abstract

MALDI imaging as a molecular mass spectrometry imaging technique (MSI) can provide accurate information about molecular composition on a surface. The last decade of MSI development has brought the technology to clinical and biomedical applications as a complementary technique of MRI and other molecular imaging. Then, this IMS technique is used for endogenous and exogenous molecule detection in pharmaceutical and biomedical fields. However, some limitations still exist due to physical and chemical aspects, and sensitivity of certain compounds is very low. Thus, we developed a multiplex technique for fast detection of different compound natures. The multiplex MALDI imaging technique uses a photocleavable group that can be detect easily by MALDI instrument. These techniques of targeted imaging using Tag-Mass molecules allow the multiplex detection of compounds like antibodies or oligonucleotides. Here, we describe how we used this technique to detect huge proteins and mRNA by MALDI imaging in rat brain and in a model for regeneration; the leech.

Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.

Publication typeJournal ArticleResearch Support, Non-U.S. Gov't
Indexed MeSH termsAnimalsDiagnostic ImagingLeechesModels, TheoreticalRNA, MessengerRatsSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationTandem Mass Spectrometry

Summary

MALDI imaging as a molecular mass spectrometry imaging technique (MSI) can provide accurate information about molecular composition on a surface. The last decade of MSI development has brought the technology to clinical and biomedical applications as a complementary technique of MRI and other molecular imaging.

Why This Matters for Hirudotherapy

This study describes a multiplex MALDI mass spectrometry imaging technique (Tag-Mass) using photocleavable groups to detect diverse compounds — including antibodies, oligonucleotides, large proteins, and mRNA — on tissue surfaces. The authors applied this method to rat brain and to the leech as a model for regeneration, demonstrating molecular-level imaging in leech tissue. For ASH's domain, the methodological advance is notable because high-spatial-resolution MSI could in principle be adapted to map the distribution of bioactive molecules within leech salivary glands or secreted compounds, aiding characterization of the leech secretome and regenerative biology. However, the connection to hirudotherapy is indirect: this is fundamentally a technique-development paper, the leech serves only as one of two demonstration models, and the abstract reports no salivary-gland data, no therapeutic findings, and no clinical context related to leech therapy.

Citation

Specific MALDI-MSI: Tag-Mass.

Stauber J et al. · Methods in molecular biology (Clifton, N.J.), 2010

DOI

Added to ASH library: March 18, 2026 · Site last updated: June 18, 2026

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