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Phage therapy, viral phage therapy, or phagotherapy is the therapeutic use of bacteriophages for the treatment of pathogenic bacterial infections. [1] [2] [3] This therapeutic approach emerged at the beginning of the 20th century but was progressively replaced by the use of antibiotics in most parts of the world after the Second World War.
Although phages do not infect humans, there are countless phage particles in the human body, given the extensive human microbiome. One's phage population has been called the human phageome, including the "healthy gut phageome" (HGP) and the "diseased human phageome" (DHP). [107] The active phageome of a healthy human (i.e., actively replicating ...
Phage therapy has gained recent attention in the United States as an alternative to standard antibiotic therapy. [ 5 ] [ 6 ] [ 7 ] It has been in practice for just over 100 years in countries such as Russia and Georgia , but due to the recent clinical attention of antibiotic resistance , Western countries have slowly been integrating phage ...
Phage therapy—viruses that specifically target pathogenic bacteria—has been developed over the last 80 years, primarily in the former Soviet Union, where it was used to prevent diarrhea caused by E. coli. [57] Presently, phage therapy for humans is available only at the Phage Therapy Center in the Republic of Georgia and in Poland. [58]
The RM system was first discovered by Salvatore Luria and Mary Human in 1952 and 1953. [1] [2] They found that a bacteriophage growing within an infected bacterium could be modified, so that upon their release and re-infection of a related bacterium the bacteriophage's growth is restricted (inhibited; also described by Luria in his autobiography on pages 45 and 99 in 1984). [3]
After this successful experiment on chicken, he felt ready for the first trial on humans. The first patient was healed of dysentery using phage therapy in August 1919. Many more followed. At the time, none, not even d'Hérelle, knew exactly what a phage was.
Phageome research in humans has largely focused on the gut, however it is also being investigated in other areas like the skin, [8] blood, [9] and mouth. [10] The composition of phages that make up a healthy human gut phageome is currently debated, since different methods of research can lead to different results. [11]
Additionally, there is strong evidence that specific crAss-like phage can be transmitted between humans via fecal microbial transplants (FMTs). [22] The RNA polymerase of crAss-like phage phi14:2 shares structural homology to RNA polymerases used to catalyze RNA interference in humans and animals. Phi14:2 is thought to deliver its RNA ...