The Potential of Phage Therapy against the Emerging Opportunistic Pathogen Stenotrophomonas maltophilia

Jaclyn G McCutcheon1, Jonathan J Dennis1

  • 1Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada.

Viruses
|July 2, 2021
PubMed

Insights

Bacteriophages offer a promising alternative to antibiotics for treating multidrug-resistant Stenotrophomonas maltophilia infections. Further research into in vivo phage therapy is crucial for clinical application.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Phage Therapy

Background:

  • Multidrug-resistant Stenotrophomonas maltophilia causes increasing nosocomial and community-acquired infections.
  • Bacterial virulence factors and antimicrobial resistance genes contribute to infection severity.
  • Phage therapy presents a potential alternative to conventional antibiotics.

Purpose of the Study:

  • To review the clinical significance, virulence, and resistance mechanisms of S. maltophilia.
  • To summarize characterized bacteriophages targeting S. maltophilia.
  • To discuss current and future strategies for phage therapy against S. maltophilia.

Main Methods:

  • Literature review of S. maltophilia clinical significance, virulence, and resistance.
  • Compilation and characterization of S. maltophilia bacteriophages.
  • Analysis of existing in vitro and in vivo phage therapy studies.

Main Results:

  • S. maltophilia possesses significant virulence and resistance mechanisms.
  • Numerous bacteriophages targeting S. maltophilia have been isolated and characterized.
  • Limited in vivo studies exist, highlighting a gap in translational research.

Conclusions:

  • Bacteriophages are viable candidates for treating S. maltophilia infections.
  • Further in vivo studies are essential to advance phage therapy.
  • Phage therapy requires development to combat multidrug-resistant S. maltophilia.

Related Concept Videos

Lytic Cycle of Bacteriophages01:30

Lytic Cycle of Bacteriophages

Bacteriophages, also known as phages, are specialized viruses that infect bacteria. A key characteristic of phages is their distinctive “head-tail” morphology. A phage begins the infection process (i.e., lytic cycle) by attaching to the outside of a bacterial cell. Attachment is accomplished via proteins in the phage tail that bind to specific receptor proteins on the outer surface of the bacterium. The tail injects the phage’s DNA genome into the bacterial cytoplasm. In the...
73.7K
Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
548
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
1.7K
Lysogenic Cycle of Bacteriophages00:43

Lysogenic Cycle of Bacteriophages

In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the host genome, allowing the bacteria to replicate the phage DNA along with the bacterial genome. The incorporated copy of the phage genome is called the prophage. Some prophages can re-activate and enter the lytic cycle. This often occurs in response to a perturbation, such as DNA damage, but can also transpire in the absence of...
64.6K
Gene Regulation in Microbial Communities: Quorum Sensing01:28

Gene Regulation in Microbial Communities: Quorum Sensing

Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
174