Killing Resistant Bacteria With Polymers Instead Of Antibiotics

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Before we get too carried away, it’s still very early days. So far, Lam has only tested her star-shaped polymers on six strains of drug-resistant bacteria in the lab, and on one superbug in live mice.

But in all experiments, they’ve been able to kill their targeted bacteria – and generation after generation don’t seem to develop resistance to the polymers.

The polymers – which they call SNAPPs, or structurally nanoengineered antimicrobial peptide polymers – work by directly attacking, penetrating, and then destabilising the cell membrane of bacteria.

Unlike antibiotics, which ‘poison’ bacteria, and can also affect healthy cells in the area, the SNAPPs that Lam has designed are so large that they don’t seem to affect healthy cells at all.

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