Although strides have been made, the challenge of preventing and treating ischemic stroke continues to persist globally. For thousands of years, the natural substances Frankincense and Myrrh have been employed in Chinese and Indian medicine to address cerebrovascular diseases, with the key components of 11-keto-β-boswellic acid (KBA) and Z-Guggulsterone (Z-GS) being the active agents. In this study, the synergistic effect and underlying mechanism of KBA and Z-GS on ischemic stroke were examined using single-cell transcriptomics. Fourteen cell types were identified in KBA-Z-GS-treated ischemic penumbra, and microglia and astrocytes account for the largest proportion. They were further re-clustered into six and seven subtypes, respectively. GSVA analysis reflected the distinct roles of each subtype. Pseudo-time trajectory indicated that Slc1a2 and Timp1 were core fate transition genes regulated by KBA-Z-GS. In addition, KBA-Z-GS synergistically regulated inflammatory reactions in microglia and cellular metabolism and ferroptosis in astrocytes. Most notably, we established an innovative drug-gene synergistic regulation pattern, and genes regulated by KBA-Z-GS were divided into four categories based on this pattern. Finally, Spp1 was demonstrated as the hub target of KBA-Z-GS. Taken together, this study reveals the synergistic mechanism of KBA and Z-GS on cerebral ischemia, and Spp1 may be the synergistic target for that. Precise drug development targeting Spp1 may offer a potential therapeutic approach for treating ischemic stroke.

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http://dx.doi.org/10.1016/j.phrs.2023.106803DOI Listing

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