American Association for the Advancement of Science, Science, 6540(372), 2021
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Single-cell analysis of CNS interactions Despite their importance in the physiology and pathology of the central nervous system (CNS), few methods are available for the unbiased, systematic investigation of cell-to-cell interactions at single-cell resolution. Clark et al. developed RABID-seq, a method that combines barcoded viral tracing with single-cell RNA sequencing (see the Perspective by Silvin and Ginhoux). RABID-seq identified the axon guidance molecules Sema4D-PlexinB2 and EphrinB3-EphB3 as mediators of microglia-astrocyte interactions that promote CNS pathology in experimental autoimmune encephalomyelitis and, potentially, multiple sclerosis. These studies also identified candidate therapeutic molecules for the modulation of microglia-astrocyte interactions in multiple sclerosis. Science , this issue p. eabf1230 ; see also p. 342