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Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
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A Strategy for Sensitive, Large Scale Quantitative Metabolomics
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Highly Efficient Dual-Probe Strategy toward Single-Cell Metabolite Analysis.

Lvyang Zhu1, Majun Yang1, Qu Tang1

  • 1School of Public Health, Nantong Key Laboratory of Public Health and Medical Analysis, Nantong University, Nantong 226019, P. R. China.

Analytical Chemistry
|January 3, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a microfluidic platform for single-cell metabolic analysis to understand cancer metastasis. It reveals correlations between cellular metabolism and metastasis-related factors, aiding in therapy development.

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Area of Science:

  • Biomedical Engineering
  • Cancer Biology
  • Metabolomics

Background:

  • Cancer metastasis is a complex process driven by cellular metabolic adaptation.
  • Understanding single-cell metabolic heterogeneity is crucial for comprehending metastasis.
  • Current methods lack the resolution to analyze intracellular and extracellular metabolites simultaneously at the single-cell level.

Purpose of the Study:

  • To develop a microfluidic platform for high-resolution, single-cell metabolic profiling.
  • To investigate the correlation between intracellular and extracellular metabolites and metastasis.
  • To explore the potential of metabolite analysis for predicting metastasis risk and guiding therapy.

Main Methods:

  • A novel microfluidic device enabling dual-probe detection of intracellular and extracellular metabolites within individual captured cells.
  • Single-cell metabolite profiling using the developed platform.
  • Analysis of the correlation between nicotinamide adenine dinucleotide (phosphate) (NAD(P)H) levels, matrix metalloproteinase (MMP) secretion, and zinc ion (Zn2+) concentrations.

Main Results:

  • The microfluidic platform successfully achieved single-cell resolution for intracellular and extracellular metabolite detection.
  • A positive correlation was identified between elevated intracellular NAD(P)H and increased MMP secretion.
  • Zn2+-mediated analysis confirmed metabolite correlations at the single-cell level, offering insights into metastasis.

Conclusions:

  • The developed microfluidic platform enhances the understanding of single-cell metabolic heterogeneity in cancer metastasis.
  • Metabolic profiling reveals key correlations relevant to metastasis progression and risk assessment.
  • Findings support the potential of targeting metabolic pathways and utilizing Zn2+ for novel anti-cancer therapies.