Cancer remains one of the leading causes of death worldwide, prompting ongoing research into potential treatments. In 2021, scientists discovered that a specific type of collagen might help keep dormant cancer cells from becoming active, offering new possibilities for cancer treatment.

The Role of Collagen in Cancer Prevention

A study published in Nature Cancer found that in mice, dormant cancer cells were surrounded by higher amounts of a specific collagen type than active cancer cells. This collagen, known as type III collagen, is a key protein in connective tissue.

Researchers also analyzed patients with head and neck cancer and observed a similar pattern. Tumors with lower amounts of type III collagen were more likely to spread to the lymph nodes, suggesting that this collagen helps keep cancer cells inactive. When collagen levels drop, the cancer becomes active again.

How It Works

In mouse models, researchers observed that type III collagen levels gradually decreased over time. When this happened, the cancer cells became active. They also found that the collagen altered the body’s chemistry, maintaining dormancy through a process called the signaling pathway. When this process was disrupted, the cancer reactivated.

Implications for Cancer Treatment

These findings could help oncologists predict whether a cancer is likely to spread. Additionally, researchers found that replacing tumors with scaffolds made of this collagen could prevent cancer from growing and spreading. Using specialized microscopy, they monitored cancer cells in real time.