Breakthrough Antibiotic Found to Fight Drug-Resistant Bacteria
In a recent breakthrough, Scientists have uncovered a potential solution for antibiotic resistance, which can help to combat the global superbug crisis. Researchers from the University of Warwick and Monash University have isolated an antibiotic from a bacterial pathway. The newly discovered compound is called pre-methylenomycin C lactone, which has the ability to be 100 times more potent than its parent molecule, methylenomycin A, against drug-resistant bacteria such as MRSA and VRE.
This Discovery, which was published in the American Chemical Society Journal, provides insight into how a familiar microorganism like Streptomyces coelicolor produces antibiotics. An intermediate molecule that was overlooked before could be the most powerful molecule against antimicrobial resistance.
Antimicrobial resistance (AMR) causes millions of deaths around the world every year. The World Health Organization (WHO) has constantly highlighted that there are “too few antibacterials in the pipeline,” mainly because of scientific and financial barriers in antibiotic research. This new discovery offers a rare glimpse of hope.
Methylenomycin A molecule was first discovered more than 50 years ago. It has been studied and even synthetically reproduced numerous times. Professor Greg Challis, who is the co-lead author from the University of Warwick and Monash University’s Biomedicine Discovery Institute, explains that the synthetic intermediates that appear during its formation have not been tested by anyone.
“By deleting certain biosynthetic genes in Streptomyces coelicolor, we uncovered two previously unknown intermediates,” said Professor Challis. “To our surprise, both were far more potent antibiotics than methylenomycin A itself.”
One of these intermediates, pre-methylenomycin C lactone Molecule, showed extraordinary antimicrobial activity that has a great potency more than 100 times greater than methylenomycin A, particularly against Gram-positive pathogens such as Staphylococcus aureus and Enterococcus faecium. These bacteria are responsible for infections caused by MRSA and VRE. Both are severe and cause hospitalization and are resistant to existing treatments.
Dr. Lona Alkhalaf, Assistant co-lead author of the study and an Assistant professor at the University of Warwick, expressed amazement that such a potent antibiotic had gone unnoticed in one of the most studied bacterial species in science.
The team believes that S. coelicolor may have originally evolved to produce the powerful pre-methylenomycin C lactone, but later adapted to make the weaker methylenomycin A, possibly to serve a different biological purpose. This evolutionary shift may explain why the stronger antibiotic had remained hidden for decades.
This discovery of the new antibiotic gives new hope in the fight against drug-resistant bacteria. Scientists found a hidden molecule in a previously known bacterium that could help to deliver stronger treatments for lethal infections. While more research is needed, this breakthrough shows that even familiar bacteria can hold powerful secrets.
