Immunosenescence In Colorectal Cancer: Interplay Of Microbiota, Inflammaging, And Metabolic Reprogramming
Colorectal cancer is a widespread and often deadly disease. Recent research sheds light on two major contributors to its stubborn nature: the aging of our immune system, known as immunosenescence, and how cancer cells rewire their energy use, called metabolic reprogramming.
Imagine your body’s immune system as a protective army. As we age, this army can become less effective, a process called immunosenescence. This means fewer active immune cells to fight off threats and an increase in cells that suppress the immune response, making it harder for your body to detect and destroy cancer cells.
At the same time, cancer cells are master manipulators. They “reprogram” their metabolism, changing how they consume nutrients and produce energy. This not only fuels their rapid growth but also creates an environment that helps them hide from the immune system and resist treatments.
These two processes don’t act alone; they are deeply intertwined. They work together to create a tumor environment that is highly supportive of cancer growth and resistant to therapies. Adding to this complexity is “inflammaging,” a state of chronic, low-grade inflammation that comes with aging. This persistent inflammation further accelerates the aging of the immune system and contributes to a pro-cancer environment.
Even the trillions of bacteria living in our gut, collectively known as the gut microbiota, play a critical role. An imbalance in these gut bacteria can fuel inflammaging and influence how effectively our immune system responds to cancer and its treatments.
Understanding these intricate connections between an aging immune system, altered cell metabolism, chronic inflammation, and gut bacteria offers exciting new avenues for developing more effective and personalized treatments for colorectal cancer, particularly for older patients.
Source: link to paper