Inflammasomes and Toll-like receptors (TLRs) are crucial players in our innate immune system's response to threats like infections and injuries. They act as the body's alarm system, alerting us to potential dangers and triggering inflammation to protect us.

Toll-like receptors (TLRs) are found on the surface and cytosol of cells and act as sentinels. They recognise specific patterns associated with pathogens (like bacteria or viruses) and damaged cells. When TLRs detect these patterns, they send signals to the immune system to initiate an inflammatory response. This involves releasing chemicals that attract other immune cells to the site of infection or injury, helping to fight off the invaders or repair damage. TLRs work in conjunction with inflammasomes to return the body to homeostasis.

Inflammasomes are like large enzymatic factories inside immune and barrier cells. When these cells detect disruption of homeostasis such as pathogens or cellular stress, inflammasomes activate and enzymatically mature cytokines such as IL-1b and IL-18 that promote inflammation. This inflammation is a defense mechanism, designed to isolate and eliminate the threat. However, if this response is too strong or goes on too long, it can cause damage to our own tissues, leading to diseases such as pulmonary, neurodegenerative, cardiovascular, and metabolic diseases, and have also been implicated in cancer.

Together, inflammasomes and TLRs form an essential part of our body's defense system. They detect danger, sound the alarm, and mobilise the immune response, ensuring we stay healthy. However, balancing their activity is crucial, as too much inflammation can lead to chronic diseases.

Understanding how microbes and cellular stress induce these defence mechanisms, and what may lead to excessive inflammation and disease allows us to design therapeutic strategies and drugs to reduce the inflammatory burden associated with disease for better patient outcomes.