, one of the world's most critical "last-resort" antibiotics. First identified in 2019 by Cornell University researchers, it belongs to the mobile colistin resistance (MCR) family, which allows resistance to spread rapidly between different types of bacteria via jumping DNA molecules called Key Characteristics of MCR-9
Colistin works like a sledgehammer: it punches holes in the bacterial cell wall. The mcr-9 gene instructs the bacteria to add a chemical modification to their cell surface. This modification acts like a patch, making the surface less sticky to colistin. The result? The antibiotic bounces off. , one of the world's most critical "last-resort" antibiotics
In the ongoing global battle against multidrug-resistant bacteria, few developments have caused as much concern among scientists as the discovery of the gene. First identified in 2019, this mobile colistin resistance gene represents a sophisticated leap in bacterial evolution, characterized by its ability to spread "silently" across the globe while potentially neutralizing one of medicine’s most critical last-resort antibiotics. What is MCR-9? This modification acts like a patch, making the