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Microbe-host interactions: structure and role of Gram-negative bacterial porins

Stefania Galdiero1, Annarita Falanga, Marco Cantisani

  • 1Department of Biological Sciences, Division of Biostructures, University of Naples "Federico II" and Istituto di Biostrutture e Bioimmagini, CNR, Via Mezzocannone 16, 80134, Naples, Italy. sgaldier@unina.it

Current Protein & Peptide Science
|January 12, 2013
PubMed

Insights

Gram-negative bacteria use outer membrane proteins (OMPs), especially porins, to interact with hosts. Understanding these porins is key to fighting bacterial infections and antibiotic resistance.

Area of Science:

  • Microbiology
  • Structural Biology
  • Immunology

Background:

  • Gram-negative bacteria possess a complex outer membrane (OM) crucial for protection and nutrient exchange.
  • Outer membrane proteins (OMPs) mediate critical interactions between bacteria and host cells.
  • Porins, a major class of OMPs, are increasingly recognized for their roles in pathogenesis.

Purpose of the Study:

  • To review structural information on porins.
  • To highlight the role of porins in bacterial pathogenesis.
  • To explore porins as potential therapeutic targets.

Main Methods:

  • Review of existing structural data on porins.
  • Analysis of literature on porin function in microbe-host interactions.
  • Discussion of porins' influence on immunological responses and antibiotic resistance.

Main Results:

  • Porins are central to bacterial adhesion, invasion, and immune evasion.
  • Porins activate host immunological responses and signaling pathways.
  • Porins contribute to antibiotic resistance by altering OM properties.

Conclusions:

  • Porins are vital virulence factors in Gram-negative bacterial infections.
  • Targeting porins offers a promising strategy for novel therapeutics.
  • Further elucidation of OM complexity is needed for comprehensive understanding.

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