The authors specifically activate ChAT- or TH-expressing gut-associated neurons in mice and perform multi-omics, finding that subsets of peripherally-activated neurons differentially regulate the gut microbiome and host GI physiology.
Method to measure lysosomal GBA1 enzyme activity using 4-MUG substrate at low pH to minimize non-lysosomal GCase interference. GBA1 activity higher in purified lysosomes than whole cell extract, confirmed by CBE inhibitor abolishing 4-MUG hydrolysis.
This protocol outlines steps for performing ex vivo slice whole-cell patch-clamp electrophysiology experiments, including voltage clamp and current clamp recordings as well as optogenetic stimulation in the Ding lab.
