Unfolded protein response (UPR) is a cellular homeostatic response to endoplasmic reticulum (ER) stress. Increasing evidence suggests an intimate relationship between virus and UPR. This research topic collated a number of review articles and original research article, in an attempt to highlight how viruses interact with the host UPR in the establishment of acute, chronic and latent infections....

Diabetic retinopathy, a common complication of diabetes, is the leading cause of blindness in adults. Diabetes chronically damages retinal blood vessels and neurons likely through multiple pathogenic pathways such as oxidative stress, inflammation, and endoplasmic reticulum (ER) stress. To relieve ER stress, the cell activates an adaptive mechanism known as the unfolded protein response (UPR). ...

In addition to serving as the entry point for newly translated polypeptides making their way through the secretory pathway, the endoplasmic reticulum (ER) also synthesizes many lipid components of the entire endomembrane system. A report published in this issue implicates a signaling pathway known to respond to ER unfolded protein load in the control of phospholipid biosynthesis by the organell...