Dr. Axe Wire · Study decoded · health

Sweet Wormwood Compound Triggers Cancer Cell Death in Lab Study

A sweet wormwood compound disrupted a protective protein in lung cancer cells, pointing to a mechanism meriting further study.

By Dr. Josh Axe · November 2, 2026 · 1 source · Watch

Photo: Pexels

A compound derived from the traditional herb sweet wormwood triggered a cell-destroying process in non-small cell lung cancer cells by disabling a protective protein, according to a study published October 28, 2026 in Phytotherapy Research.

15active compounds

61linked targets

Researchers used network pharmacology and lab testing to study dihydroartemisinin (DHA), derived from the traditional herb sweet wormwood (Artemisia annua), in two human non-small cell lung cancer cell lines, A549 and PC9, plus mouse tumor models.

The analysis identified 15 active plant compounds and 61 targets tied to lung cancer, narrowing to 10 candidates linked to ferroptosis, an iron-driven form of cell death. NQO1, a protein that normally protects cells from oxidative damage, emerged as the top target. Binding tests confirmed DHA attaches directly to NQO1, with a measured binding strength (KD) of 7.61 × 10⁻⁶ M. DHA suppressed NQO1 at the gene level and sped its breakdown as a protein.

DHA triggered hallmarks of ferroptosis in the cancer cells: a burst of reactive oxygen species, buildup of iron and the fat-damage marker MDA, depletion of the antioxidant glutathione, and inactivation of GPX4, a protein that guards against this damage. Restocking NQO1 partly blunted these effects; removing it reproduced them without the compound, and restoring GPX4 partly reversed the damage from losing NQO1. The authors describe NQO1 as a key mediator linking DHA to this death pathway. In mice, DHA slowed tumor growth, an effect partly undone when NQO1 was added back.

Direct Binding Strength Between DHA and NQO1

Phytotherapy Research, 2026, Guo et al.

This is lab-dish and mouse evidence, not a human trial, so tumor size and survival numbers in people aren't available. The work leaned heavily on computational target prediction before narrowing to NQO1, so confirmation in further models is the logical next step.

Dr. Axe’s Take

Sweet wormwood carries centuries of traditional use, and this study adds a molecular explanation: a plant compound disabling a protein cancer cells lean on for protection. I find the ferroptosis angle compelling because it's a different kill switch than standard chemotherapy uses. This doesn't mean a diagnosed patient should treat lung cancer with an herb instead of oncology care. If you're navigating a cancer diagnosis, keep working with your oncology team, and ask about any supplement or herb you're considering so it can be checked against your treatment plan.

— Dr. Axe

Take the Cellular Health Quiz →

Study summary

Who: Human lung cancer cells (A549, PC9 lines) in lab dishes; validation in mouse tumor models.
Design: Network pharmacology and transcriptomic screening, molecular docking, binding assays (SPR, CETSA), NQO1 overexpression/knockdown and GPX4 rescue experiments.
Dose: Not reported
Primary result: DHA bound directly to NQO1 (KD = 7.61 × 10⁻⁶ M) and suppressed its expression, triggering ferroptosis markers in both cell lines.
Secondary: 15 active plant compounds and 61 lung cancer-linked targets identified; NQO1 overexpression partly reversed ferroptosis; in mice, DHA slowed tumor growth, partly reversed by restoring NQO1.
Funding / conflicts: Funders listed in the journal record: National Natural Science Foundation of China; Fundamental Research Funds for the Central Universities. Conflicts not reported in the abstract.
Date: Oct 28, 2026