MAPT and Alzheimer disease: To put our results in context with human data, we compared the list of proteins that we generated with the astrocyte‐specific genes that were found to be differentially expressed in early‐ vs late‐stage human AD brain (Mathys et al., 2019), in AD vs control brain (Grubman et al., 2019; Lau et al., 2020; Sadick et al., 2022) and showing a positive correlation with Aβ or phospho‐tau pathology (Smith et al., 2021).