Supplementary Figure 3: SPH shows more potent activation efficiency compared to SAM and VPR in primary astrocytes.

(a) Schematic illustration of all plasmids. The expressions of all functional elements were probed by the fluorescence reporter mCherry or GFP. (b) 2 days after transfection, cells were prepared for FACS. The mCherry and GFP double-positive cells were collected for qPCR. (c) SPH achieved the highest level of activation, which supports the observations in cell lines (n = 2 cell cultures).