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Microbial single-cell mass spectrometry: status, challenges, and prospects.

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Mass spectrometry now enables analyzing microbial single cells, moving beyond mammalian studies. This review details the principles and future of this powerful single-cell omics technology.

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Area of Science:

  • Microbiology
  • Analytical Chemistry
  • Biotechnology

Background:

  • Single-cell analysis reveals cellular heterogeneity across omics levels.
  • Spectrometric methods offer label-free metabolome and proteome analysis but are limited.
  • Current limitations primarily restrict single-cell mass spectrometry to mammalian cells.

Purpose of the Study:

  • To review the principles enabling microbial single-cell mass spectrometry.
  • To discuss the future potential of this technology in microbiology.

Main Methods:

  • Miniaturization of cell handling and incubation.
  • Development of chip-coupling concepts for analyte ionization.
  • Interfacing microfluidic chips with mass spectrometers.

Main Results:

  • Advancements in mass spectrometry now permit microbial single-cell analysis.
  • Key innovations include miniaturized systems and improved ionization techniques.

Conclusions:

  • Microbial single-cell mass spectrometry is an emerging field with significant potential.
  • Future developments will likely expand its applications in microbial research and diagnostics.