Sweet Wormwood (Artemisia annua / Qinghao) to Artemisinin: Tu Youyou Deciphering Ancient Ge Hong Texts (340 CE)

The Nobel Prize That Connected Ancient Texts with Modern Pharmacology

In 1969, during the Vietnam War, Chinese pharmacologist Professor Tu Youyou was appointed head of Project 523—a classified government initiative tasked with discovering a cure for chloroquine-resistant malaria. After screening over 2,000 traditional Chinese herbal recipes without success, Tu turned to a 1,600-year-old Daoist manuscript.

1. Decoding Ge Hong\'s Emergency Prescriptions (340 CE)

Tu Youyou discovered a passage in Ge Hong\'s Zhou Hou Bei Ji Fang stating:

"Take a handful of Qinghao (Artemisia annua), soak in two sheng of water, wring out the juice, and drink it all."

2. The Endoperoxide Bridge Mechanism

The isolated compound, Artemisinin (Qinghaosu), contains a rare endoperoxide bridge that reacts with the high iron concentrations inside the malaria parasite, generating lethal free-radical cascades that destroy parasite organelles. For this breakthrough, Tu Youyou was awarded the 2015 Nobel Prize in Physiology or Medicine.

3. References & Historical Citations

• Tu, Y. (2011). The discovery of artemisinin (qinghaosu) and gifts from Chinese medicine. Nature Medicine, 17(10), 1217-1220. [PubMed: 21989013]
• Miller, L. H., & Su, X. (2011). Artemisinin: discovery from the Chinese herbal garden. Cell, 146(6), 855-858. [PubMed: 21907397]

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