New Applications of Antabuse in Cancer Treatment

Overview of Antabuse

Antabuse, also known as disulfiram, has been utilized for decades as a treatment for alcoholism. The drug works by inducing nausea upon the consumption of alcohol, thereby discouraging alcohol abuse. Interestingly, evidence from case reports and laboratory studies dating back to the 1970s indicates that Antabuse might possess anti-cancer properties. Despite this potential, recent research into its effectiveness against cancer has been limited, leaving scientists to ponder its mechanism of action.

Recent Research Findings

A recent article in Science highlights a new study that explores the anti-cancer effects of Antabuse. Researchers from Denmark, the Czech Republic, and the United States analyzed patient data and conducted experiments on mice to assess the impact of Antabuse on cancer progression. Their findings were published in the journal Nature. By examining Denmark’s cancer registry, they found that among 3,000 patients who used Antabuse, those who continued the medication experienced a 34% lower cancer-related death rate compared to those who discontinued its use.

Mechanism of Action

Further investigations in mouse models demonstrated that Antabuse slowed the growth of tumors, particularly in breast cancer, especially when administered alongside copper. These experiments revealed crucial insights into how the drug operates. When Antabuse is metabolized, one of its byproducts interacts with copper and inhibits the ubiquitin-proteasome system within cells, which typically eliminates excess proteins. This disruption leads to cell death due to an overload of proteins. Notably, normal cells are not adversely affected by Antabuse, suggesting a difference in metabolic processing between cancerous and healthy cells. Researchers discovered that the copper metabolite is present in tumors at ten times the concentration found in healthy tissue.

Future Implications and Clinical Trials

While experts emphasize that Antabuse is not a definitive cure for cancer, its established history could position it as a cost-effective treatment option for extending the lives of patients with metastatic cancer. In light of these findings, researchers are initiating multiple clinical trials to further investigate the drug’s effects on metastatic breast, colon, and brain cancers.

References

1. Kaiser, Jocelyn. “An old drug for alcoholism finds new life as cancer treatment.” Science, 06 December 2017. http://www.sciencemag.org/news/2017/12/old-drug-alcoholism-finds-new-life-cancer-treatment
2. Skrott et al. “Alcohol-abuse drug disulfiram targets cancer via p97 segregase adaptor NPL4.” Nature, 14 December 2017. 552(194–199). doi:10.1038/nature25016