Potential role of Sigma-1 receptor inhibition and ER stress-related pathways in upregulating definitive endoderm markers in human embryonic stem cells.

Summary: Stem cells are like blank slates that can turn into any part of the body. Scientists want to know how to guide them to become specific parts, like the gut or liver. In this study, researchers found that blocking a specific protein (called the Sigma-1 receptor) stresses the cells in a helpful way. This "good stress" makes the stem cells turn into "endoderm" cells, which are the early building blocks for organs. This discovery could help doctors create better organ cells in the lab for future treatments!