Alzheimer's disease (AD) is the most common neurodegenerative disease in older people, affecting up to 1 in 20 individuals aged 65 and above. In addition to environmental and lifestyle factors, genetic mutations can predispose an individual to AD and some rare forms of inherited “familial” AD (fAD) are caused by known genetic mutations, with these affected individuals developing AD with high probability and at relatively young age. In most cases, AD is diagnosed at advanced stages, but pathological alterations in brain cells may arise earlier in life, particularly in fAD which is known to manifest earlier in life.

To study early-life changes in fAD brain cells, researchers including Zhen-Ge Luo and colleagues from ShanghaiTech University, China, have leveraged stem cell-derived brain organoids, to model aspects of early human brain development and function in the laboratory.

Alzheimer’s disease (AD) is a common, debilitating neurodegenerative disease affecting about 10 percent of people over the age of 65 and one third of people aged 85 and above. Besides environmental factors, the genes have a strong influence on whether or not a person develops AD during their lifetime. Through genome sequencing of DNA from large groups of healthy people and people with AD, some naturally occurring small changes in the DNA, known as genetic variants, were found to be more frequent in AD patients than in healthy people. As more and more of these AD-associated genetic “risk” variants are discovered, it is now possible to calculate a person’s individual polygenic risk score (PRS), meaning the likelihood of the person to develop AD, with high accuracy. Despite this progress, it is still largely unknown how genetic risk variants, or combinations thereof, cause AD in individual patients and more specifically, how risk variants impact the health and function of brain cells.

The ISSCR has selected five distinguished early career scientists to serve as new Early Career Editors for Stem Cell Reports, the peer-reviewed, open access, online journal of the International Society for Stem Cell Research (ISSCR).

During their term, Early Career Editors provide strategic advice, participate in the editorial review process, and receive mentorship from current editors. They join other Early Career Editors currently working with the journal.