Pancreatic cancer is one of the deadliest forms of cancer in the world. It is often called a silent disease because it usually causes very few symptoms in its early stages.
By the time many people notice signs such as weight loss, stomach pain, yellowing of the skin, or loss of appetite, the cancer has often already spread to other parts of the body. This makes treatment much more difficult.
Today, only about 12% of people diagnosed with pancreatic cancer survive for five years or longer. Because of this, scientists around the world are searching for better ways to detect the disease earlier and stop it before it becomes aggressive.
A recent study from researchers at the Sloan Kettering Institute in New York and IRB Barcelona in Spain has brought fresh hope. Their research, published in the journal Science, explores the very earliest stages of pancreatic cancer.
Instead of studying only advanced tumors, the scientists focused on how healthy cells slowly change into cancer cells. Understanding these first steps could eventually lead to earlier diagnosis and more effective treatments.
Most cancers begin when changes, called mutations, occur in DNA. DNA contains the instructions that tell cells how to grow, divide, and carry out their normal jobs. In pancreatic cancer, one of the most common mutations affects a gene called KRAS. Under normal conditions, KRAS helps control cell growth.
When the gene becomes damaged, however, it behaves like a car with its accelerator stuck to the floor. It keeps sending signals telling cells to grow and divide even when they should stop. The same KRAS mutation is also found in several other cancers, including lung and bowel cancer, showing how important this gene is in cancer development.
The researchers found that a faulty KRAS gene alone is not enough to explain how pancreatic cancer develops so quickly. They discovered that inflammation also plays a major role. Inflammation is the body’s natural response to injury or infection.
Normally, it helps damaged tissues heal. However, when inflammation becomes long-lasting or occurs repeatedly, it can damage healthy cells and create an environment that encourages cancer to grow.
The study showed that even one or two days of inflammation can change the behavior of cells in the pancreas. The cells begin communicating more actively with one another, change their shape, and become more mobile. These changes make it easier for abnormal cells to survive, multiply, and eventually spread.
To understand this process in detail, the researchers studied pancreatic ductal adenocarcinoma, or PDAC, the most common and aggressive type of pancreatic cancer. They used specially bred mice that naturally developed this disease, allowing the scientists to observe every stage of cancer development from healthy tissue to advanced tumors.
One of the most important discoveries involved something called cellular plasticity. Plasticity means that cells are flexible and can change their identity or behavior when conditions change.
In pancreatic cancer, this flexibility allows early cancer cells to adapt to their surroundings, survive stressful conditions, and work together more effectively. Inflammation appears to make these changes happen even faster.
The research team also discovered that these changes do not happen randomly. Instead, the cells appear to move through a predictable series of steps as they become cancerous. This is encouraging because it suggests scientists may eventually be able to interrupt the process before full cancer develops.
To examine the cells more closely, the researchers used an advanced method called single-cell analysis. Instead of studying millions of cells together, this technique examines each cell individually. This allowed the team to identify a special group of cells that acted as communication centers, sometimes called hub cells.
These cells contained many genes that helped them send signals to nearby cancer cells, healthy cells, and immune cells. This communication network appeared to encourage faster tumor growth and cancer spread.
The findings provide scientists with several new targets for future treatments. If researchers can develop medicines that reduce harmful inflammation, block the signals sent by hub cells, or interrupt the earliest changes caused by the KRAS mutation, they may be able to slow or even prevent pancreatic cancer before it becomes life-threatening.
Although this discovery does not immediately lead to a cure, it represents an important step forward. Every new understanding of how pancreatic cancer begins brings researchers closer to developing earlier screening tests and better treatments.
Detecting the disease before it spreads could greatly improve survival and give many more patients the chance of successful treatment.
The study, carried out by researchers from the Sloan Kettering Institute and IRB Barcelona, was published in the journal Science.
If you care about cancer, please read studies that artificial sweeteners are linked to higher cancer risk, and how drinking milk affects risks of heart disease and cancer.
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