Nagoya University researchers develop hormone-producing pituitary organoids

Researchers at Nagoya University have developed a method using human embryonic stem cells to create pituitary-hypothalamic organoids. These three-dimensional cellular structures are designed to mimic developing organ tissue and are capable of producing adrenocorticotropic hormone (ACTH).

In studies involving mice with removed pituitary glands, the transplanted organoids successfully increased ACTH concentrations and improved survival rates over a six-month period without signs of uncontrolled cell growth. The research progressed to testing on a 15-year-old Javan macaque that had undergone surgical removal of its pituitary gland. This technology aims to eventually provide a more natural alternative to lifelong hormone replacement therapy for individuals with pituitary insufficiency, as current treatments cannot fully replicate the body's natural hormonal regulation.