Connection Between Fungi and Cancer

Research Findings

Recent studies have revealed a potential link between fungi and cancer, highlighting the presence of fungal organisms within cancer cells. Researchers are now presenting evidence that may lead to new diagnostic and prognostic biomarkers for cancer.

Bacteria, Fungi, and Cancer

While there has been considerable research on bacterial communities within tumors, the role of fungi in shaping host immunity and their impact on cancer patients remains largely unexplored. It is still uncertain whether fungi are part of the bacterial-immune interaction associated with cancer.

To address this gap, a team of international researchers sought to determine if there is a connection between fungi and cancer.

Fungi and Cancer Research

Study Overview

The research team analyzed over 17,000 human samples across 35 different types of cancer. According to biologist Rob Knight, PhD, who serves as the founding Director of the Center for Microbiome Innovation and is a Professor of Pediatrics and Computer Science and Engineering at the University of California, San Diego, “The existence of fungi in most human cancers is both a surprise and to be expected.” He elaborated, “It is surprising because we don’t know how fungus could get into tumors throughout the body. But it is also expected because it fits the pattern of healthy microbiomes throughout the body, including the gut, mouth, and skin, where bacteria and fungus interact as part of a complex community.”

Key Findings

The study produced several important findings:
– Fungal DNA and cells were found in low abundance across major human cancers.
– Fungi were located within cancer cells.
– Understanding both the microbiome and mycobiome is crucial for comprehending cancer.
– Fungi often interact synergistically with bacteria rather than competitively.
– Specific fungi are linked to varying clinical outcomes, including responses to treatment and cancer survival rates.
– Fungi may offer diagnostic value in cancers, even in their early stages.

Conclusion

The influence of fungi on immune response and cancer progression reinforces previous research indicating that fungi play a significant role in cancer biology. The findings also highlight the close association between fungi and bacteria, suggesting a need for further investigation into their synergistic roles in cancer development. Importantly, this study presents potential translational implications for cancer diagnosis, prognosis, and drug development.

References

1. Narunsky-Haziza L, Sepich-Poore GD, Livyatan I, et al. Pan-cancer analyses reveal cancer-type-specific fungal ecologies and bacteriome interactions. Cell. 2022 Sep 29; 185(20): 3789-3806. https://doi.org/10.1016/j.cell.2022.09.005
2. Schlingman J. Researchers in US and Israel detect fungal DNA in most cancer types found in the human body. Dark Daily. https://www.darkdaily.com/2022/11/28/researchers-in-us-and-israel-detect-fungal-dna-in-most-cancer-types-found-in-the-human-body/. Published November 22, 2022.