A plant molecule called isoaltholactone boosts the survival of mice infected with lethal superbugs from zero to 90 percent.
April 24, 2026
Original Paper
High Recovery Isolation (HRI) of Inner Responsive Molecules from plants – Isoaltholactone synergism against Carbapenem-Resistant Klebsiella pneumoniae
SSRN · 6612829
The Takeaway
Carbapenem-resistant bacteria are nightmare germs that shrug off even our strongest last resort antibiotics. This molecule derived from plants does not kill the bacteria directly but makes them vulnerable to drugs they previously ignored. When paired with the antibiotic meropenem, the combination successfully clears infections that were once a death sentence. This approach effectively re-arms existing medicines that doctors had written off as useless. It provides a new strategy for fighting the global rise of antibiotic resistance using natural chemical boosters.
From the abstract
For the treatment of carbapenem-resistant Klebsiella pneumoniae, a synergistic treatment combining a plant extract with the carbapenem meropenem (Mem) might be effective. Our results showed that extracts from Goniothalamus griffithii demonstrated antibacterial activity against Klebsiella pneumoniae HS11286 (a carbapenemase-expressing strain) at a relatively low concentration. To avoid missing active constituents, a bioactivity-guided strategy combined with high-speed countercurrent chromatograph