South Korean Researchers Develop Brain Organoids for Alzheimer's Diagnosis

South Korean researchers have developed a brain organoid from patient blood cells that reproduces the cellular changes associated with Alzheimer’s disease ^[1].

This development is critical because Alzheimer’s causes significant brain damage long before clinical symptoms appear. Current early-diagnosis methods are limited, and this new system enables non-invasive, real-time monitoring of pathology to improve detection prospects ^[1].

The project involved a collaboration between KAIST and Sejong University, featuring postdoctoral researcher Han Geum-mu and professor Kwon Bo-mi ^[1]. The team created these "mini-brains" using a patient's own blood cells, allowing the organoids to mimic the specific protein accumulation found in the diseased brain ^[1].

To observe these changes, the researchers employed fluorescence-lifetime imaging (FLIM). This imaging technique allows scientists to track the development of the disease without destroying the sample. Because the system can capture images at a speed similar to fluorescence microscopy, it provides a way to observe living samples in real time ^[1].

Han Geum-mu said the ability to acquire images at a speed similar to fluorescence microscopy allows for the advantage of obtaining real-time data from actual living samples ^[1].

The research, reported in 2024, focuses on the ability to reproduce the environment of a patient's brain in a laboratory setting ^[1]. By observing how proteins accumulate and how cells change within the organoid, the team aims to refine the window for early intervention, a goal that has remained elusive with traditional diagnostic tools ^[1].