Potential Cancer-Fighting Properties of a Fungal Contaminant

A possibly dangerous fungus, dubbed the “Pharaoh Cursed Bacteria,” might actually offer new ways to tackle cancer, according to recent findings from researchers.

Scientists from the University of Pennsylvania have altered fungal molecules to develop new compounds aimed at boosting their cancer-fighting capabilities.

“Much like how penicillin was derived from bacteria, these findings suggest that many more drugs await discovery within natural products,” stated Dr. Xue (Sherry) Gao, an associate professor and the lead researcher.

The results of their study appeared in Nature Chemical Biology.

Aspergillus flavus, the fungus in question, is commonly found in decaying leaves, compost, and various plants, as noted by the Mayo Clinic.

While fungi generally pose little risk to healthy individuals, they can compromise the immune system and lead to respiratory issues for those on specific medications.

Severe complications from this fungus can include issues like pulmonary bleeding and potentially life-threatening infections in critical organs, the Mayo Clinic added.

A Historical Twist

Following the opening of King Tutankhamun’s tomb in the 1920s, several excavation team members reportedly died unexpectedly, fueling rumors of a “curse” on those who disturbed the Pharaoh’s resting place.

Later, some researchers speculated that dormant fungal spores might have been responsible for these sudden deaths.

In a similar incident in the 1970s, a grave excavation in Poland resulted in ten fatalities shortly after, with investigations indicating the presence of Aspergillus flavus.

New Cancer Therapy Potential

Interestingly, the same fungus related to King Tut’s tomb could potentially be utilized in a new cancer treatment for leukemia. Dr. Gao mentioned, “Fungi can produce a variety of useful compounds.”

These compounds might be toxic to different cell types, depending on how they’re managed biologically.

This study primarily aims to identify specific compounds from Aspergillus flavus, which has previously shown promise.

Dr. Gao explained that these compounds might have the ability to inhibit cancer cell growth. “Cancer cells divide uncontrollably, and these compounds might block the formation of microtubules needed for cell division,” she said.

The researchers observed that, when combined with human cancer cells, two variants of the molecules had a notably strong effect on leukemia cells, while another acted similarly to two FDA-approved drugs used for treating leukemia.

Considerations and Limitations

Dr. Tiffany Troso Sandoval, a medical oncologist based in New York, cautioned that this research, conducted on cell cultures, is still in its early phases.

“We are far from practical applications for leukemia treatment,” she remarked, noting that the compounds are derived from a rare class of bioactive molecules.

Leukemia encompasses multiple subtypes, including acute and chronic forms, which might not respond uniformly to a single treatment. Therefore, further tests are needed to determine which subtypes could effectively utilize these active molecules.

The research also found that the studied compounds had limited impacts on breast, liver, and lung cancer cells. This indicates that their effectiveness may be confined to certain cell types, a key consideration for future drug development.

Looking ahead, the team plans to explore the potential uses of fungi in animal models before moving to human trials. “We’re eager about the potential benefits nature can offer us,” Dr. Gao stated.

This research received support from various institutions, including the National Institutes of Health and the University of Pennsylvania.