Scripps Research reports a vaccine that blocks fentanyl and its designer variants before they reach the brain
Scientists at Scripps Research report a vaccine that trains the immune system to neutralize fentanyl in the bloodstream before it reaches the brain. In mice, it cut brain fentanyl levels by roughly 70 percent and kept breathing near normal, while also binding designer variants li
Fentanyl and its synthetic relatives kill more Americans each year than car crashes and gun violence combined, and the danger is speed: in high doses they shut down the brain signals that control breathing. Scientists at Scripps Research, led by chemist Kim Janda, have published a different approach in the Journal of Medicinal Chemistry. Rather than using fentanyl itself, the team attached a reshaped version of the molecule to a carrier protein and gave mice four doses over eight weeks. The resulting antibodies recognized a shared molecular fingerprint across the whole fentanyl class, binding carfentanil, China White, acetylfentanyl and furanylfentanyl, while ignoring medical opioids such as morphine and oxycodone. Vaccinated mice given normally dangerous doses kept breathing near normal, and brain fentanyl dropped by roughly 70 percent. Janda says human clinical trials are still needed. Source: Scripps Research, Journal of Medicinal Chemistry.