Phage therapeutic delivery methods and clinical trials for combating clinically relevant pathogens

Heba Mohammed Refat M Selim1,2, Fatma Alzahraa M Gomaa3, Mohammad Y Alshahrani4

  • 1Department of Pharmaceutical Sciences, Faculty of Pharmacy, AlMaarefa University, Riyadh, Saudi Arabia.

Therapeutic Delivery
|November 15, 2024
PubMed

Insights

Phage therapy offers a potent alternative to antibiotics for combating multidrug-resistant (MDR) bacterial infections. This review highlights phage therapy

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Biotechnology

Background:

  • The rise of multidrug-resistant (MDR) bacteria presents a critical global health challenge.
  • Existing antimicrobial agents face limitations due to widespread resistance.
  • Phage therapy is emerging as a promising alternative for treating MDR infections.

Purpose of the Study:

  • To review the latest advancements in phage therapy for MDR infections.
  • To explore phage attack strategies, formulations, and administration routes.
  • To discuss the clinical trial status, challenges, and future prospects of phage therapy.

Main Methods:

  • Literature review of in vitro and in vivo studies on phage therapy.
  • Analysis of current clinical trial data for phage therapy applications.
  • Synthesis of information on phage mechanisms, delivery, and regulatory hurdles.

Main Results:

  • Phage therapy demonstrates significant bactericidal and anti-biofilm activity against MDR bacteria.
  • Various phage formulations and administration routes are being investigated for efficacy and safety.
  • Several phage therapy candidates are progressing through clinical trials for diverse infections.

Conclusions:

  • Phage therapy shows considerable potential as a safe and effective treatment for MDR infections.
  • Overcoming challenges in phage therapy development and clinical implementation is crucial for its widespread adoption.
  • Continued research and clinical evaluation are essential to fully realize the therapeutic promise of bacteriophages.

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...
70.4K
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.
1
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...
61.9K
Viral Replication: Lysogenic Cycle01:16

Viral Replication: Lysogenic Cycle

The lysogenic cycle is a crucial viral replication strategy that allows bacteriophages to persist within host cells without immediately destroying them. This process is primarily observed in temperate phages, such as bacteriophage lambda (λ), which infects Escherichia coli. The cycle allows the viral genome to persist across bacterial generations while keeping host cells viable.Integration of the Viral GenomeUpon infection, bacteriophage lambda attaches to the bacterial surface and injects...
Viral Replication: Lytic Cycle01:20

Viral Replication: Lytic Cycle

Bacteriophages, or phages, are viruses that specifically infect bacteria. Among them, T-even bacteriophages, such as T4, exhibit a well-characterized lytic replication cycle in Escherichia coli (E. coli). This process ensures the rapid proliferation of the virus while ultimately leading to the destruction of the bacterial host.Attachment and DNA InjectionThe infection process begins with the recognition and binding of the T4 phage to the E. coli cell surface. Tail fibers of the phage...
1
Biological Methods for Microbial Control01:28

Biological Methods for Microbial Control

Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
2