Major mental illnesses such as schizophrenia, severe depression and bipolar disorder share a common genetic link. Studies of specific families with a history of these types of illnesses have revealed that affected family members share a mutation in the gene DISC1. While researchers have been able to study how DISC1 mutations alter the brain during development in animal models, it has been difficult to find the right tools to study changes in humans. However, advancements in engineering human stem cells are now allowing researchers to grow mini-organs in labs, and gene-editing tools can be used to insert specific mutations into these cells.
Source: Brigham and Women’s Hospital
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