%0 Journal Article %T Neurodegenerative diseases associated with the disruption of proteostasis and their therapeutic strategies using chemical chaperones. %A Sugiyama T %A Nishitoh H %J J Biochem %V 0 %N 0 %D 2024 Jul 2 %M 38955196 %F 3.241 %R 10.1093/jb/mvae048 %X Aberrant proteostasis is thought to be involved in the pathogenesis of neurodegenerative diseases. Some proteostasis abnormalities are ameliorated by chaperones. Chaperones are divided into three groups: molecular, pharmacological, and chemical. Chemical chaperones intended to alleviate stress in organelles, such as the endoplasmic reticulum (ER), are now being administered clinically. Of the chemical chaperones, 4-phenylbutyrate (4-PBA) has been used as a research reagent, and its mechanism of action includes chaperone effects and the inhibition of histone deacetylase. Moreover, it also binds to the B-site of SEC24 and regulates COPII-mediated transport from the ER. Although its therapeutic effect may not be strong, elucidating the mechanism of action of 4-PBA may contribute to the identification of novel therapeutic targets for neurodegenerative diseases.