IIT Kanpur scientists discover immune cell process that obstructs insulin production

Researchers at IIT Kanpur have made a significant discovery that certain immune cells in the pancreas can obstruct insulin production within minutes, according to a report by News18. This research has demonstrated the potential to change scientists' understanding of diabetes, as it shows how immune cells communicate with insulin-producing cells to prevent them from releasing insulin normally.

The research revealed that immune cells in the pancreas suppress insulin very rapidly through fat molecules. The GPR18 receptor pathway plays a crucial role in this process, which has also been confirmed in the human body. This discovery could provide new targets for the treatment of obesity and type 2 diabetes. Researchers have identified how these immune cells communicate with insulin-producing cells and prevent them from releasing insulin.

Understanding pancreatic function is essential to grasp the importance of this discovery. The pancreas is an organ located behind the stomach. One of its most important functions is to produce insulin, which is a hormone that helps the body use sugar from food as energy. When blood sugar levels rise after a meal, the pancreas releases insulin into the bloodstream. Insulin helps move sugar from the blood into the body's cells, thereby keeping blood glucose levels controlled.

The pancreas contains clusters of cells called islets. These include beta cells, which produce and release insulin, as well as other cells that help regulate pancreatic function. Between these cells are also immune cells called macrophages, which normally help protect tissues and maintain their health.

The IIT Kanpur study found that these macrophages can send signals to neighboring beta cells and interfere with their ability to release insulin. Until now, scientists largely believed that obesity-related inflammation gradually damages insulin-producing cells over months or years. However, the new research has revealed a much faster process in which immune cells can suppress the release of insulin within minutes.

Dr. Sai Prasad PD Paiydi, Assistant Professor in the Department of Biological Sciences and Bioengineering at IIT Kanpur, who led this research, stated, "We have discovered that immune cells present next to beta cells can shut down insulin release in minutes." He further added, "They do this without giving any of the traditional inflammatory signals that we have been studying for decades. These findings change our fundamental understanding of how immune cells affect insulin production. This effect is not slow damage caused by inflammation, but a directive given in minutes."

Scientists have discovered that this process begins when a specific signaling pathway is activated in the immune cells. Subsequently, these cells release special fat molecules called sphingolipids. These fat molecules reach the neighboring insulin-producing beta cells and enter them through a specific pathway or transporter on their surface.

The Indian Institute of Technology (IIT) Kanpur is one of India's leading technical and research institutions, located in Kanpur, Uttar Pradesh. It is known for high-level education and research in the fields of engineering, science, and technology.