Application of proteomics in studying bacterial persistence

Jordy Evan Sulaiman1, Henry Lam1

  • 1a Department of Chemical and Biological Engineering , The Hong Kong University of Science & Technology , Kowloon , Hong Kong.

Abstract

Insights

Bacterial persisters are resilient cells surviving antibiotics. Proteomics offers a powerful approach to study these cells, despite current technical challenges, with recent advances enabling new research opportunities.

Area of Science:

  • Microbiology
  • Proteomics
  • Bacterial Persistence

Background:

  • Bacterial persisters are a small subpopulation of cells that survive antibiotic treatment by entering a dormant state.
  • Persistence poses a significant clinical challenge due to treatment failures and recurrent infections.
  • Understanding the molecular mechanisms underlying persistence is crucial for developing effective therapeutic strategies.

Purpose of the Study:

  • To review the current understanding of bacterial persistence.
  • To explore the application of proteomics in studying persister cells.
  • To discuss the challenges and future perspectives of using proteomics to investigate bacterial persistence.

Main Methods:

  • Literature review of existing proteomics studies on bacterial persisters.
  • Analysis of technical challenges and recent advancements in persister cell isolation and enrichment.
  • Discussion of the potential of proteomics to elucidate persister cell biology.

Main Results:

  • Limited proteomics studies have been conducted on bacterial persisters to date.
  • Technical challenges in isolating and analyzing persister cells have hindered proteomic investigations.
  • Recent advancements in persister enrichment methods present new opportunities for proteomic research.

Conclusions:

  • Proteomics is a promising tool for unraveling the complexities of bacterial persistence.
  • Overcoming current technical hurdles is essential for advancing our understanding of persister cells.
  • The opportune timing, with new isolation techniques, makes proteomics a key strategy to address bacterial persistence.

Related Concept Videos

Proteomics01:33

Proteomics

A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
9.7K
Bacterial Transformation01:33

Bacterial Transformation

In 1928, bacteriologist Frederick Griffith worked on a vaccine for pneumonia, which is caused by Streptococcus pneumoniae bacteria. Griffith studied two pneumonia strains in mice: one pathogenic and one non-pathogenic. Only the pathogenic strain killed host mice.
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
59.8K
Bacterial Signaling01:30

Bacterial Signaling

Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
40.6K
Bacterial RNA Polymerase00:43

Bacterial RNA Polymerase

Unlike eukaryotes, bacteria use a single RNA Polymerase (RNAP) to transcribe all genes. The different subunits of bacterial RNAPhave distinct functions. The multisubunit structure of the bacterial RNAP helps the enzyme to maintain catalytic function, facilitate assembly, interact with DNA and RNA, and self-regulate its activity.
In most genes, the transcription site is a single base present upstream of the coding sequence. Though RNAP is a catalytically efficient enzyme, it does not recognize...
32.7K
Bacterial Transcription01:53

Bacterial Transcription

RNA polymerase (RNAP) carries out DNA-dependent RNA synthesis in both bacteria and eukaryotes. Bacteria do not have a membrane-bound nucleus. So, transcription and translation occur simultaneously, on the same DNA template.
Transcription can be divided into three main stages, each involving distinct DNA sequences to guide the polymerase. These are:
36.5K
Photoluminescence: Applications01:14

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
1.1K