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| 1 | Targeting the blood-brain barrier to delay aging-accompanied neurological diseases by modulating gut microbiota,circadian rhythms,and their interplays显示文摘AbstracTthe blood-brain barrier(BBB)impairment plays a crucial role in the pathological processes of aging-accompanied neurological diseases(AAND).Meanwhile,circadian rhythms disruption and gut microbiota dysbiosis are associated with increased morbidity of neurological diseases in the accelerated aging population.Importantly,circadian rhythms disruption and gut microbiota dysbiosis are also known to induce the generation of toxic metabolites and pro-inflammatory cytokines,resulting in disruption of BBB integrity.Collectively,this provides a new perspective for exploring the relationship among circadian rhythms,gut microbes,and the BBB in aging-accompanied neurological diseases.In this review,we focus on recent advances in the interplay between circadian rhythm disturbances and gut microbiota dysbiosis,and their potential roles in the BBB disruption that occurs in AAND.Based on existing literature,we discuss and propose potential mechanisms underlying BBB damage induced by dysregulated circadian rhythms and gut microbiota,which would serve as the basis for developing potential interventions to protect the BBB in the aging population through targeting the BBB by exploiting its links with gut microbiota and circadian rhythms for treating AAND. | Yanping Wang Weihong Du Xiaoyan Hu Xin Yu Chun Guo Xinchun Jin Wei Wang | 2023 | Acta Pharmaceutica Sinica B2023，13，12： | 0 |
| 2 | Purpurolide C-based microneedle promotes macrophage-mediated diabetic wound healing via inhibiting TLR4-MD2 dimerization and MYD88 phosphorylation显示文摘Delayed wound healing in diabetes is a global challenge,and the development of related drugs is a clinical problem to be solved.In this study,purpurolide C(PC),a small-molecule secondary metabolite of the endophytic fungus Penicillium purpurogenum,was found to promote diabetic wound healing.To investigate the key regulation targets of PC,in vitro RNA-seq,molecular docking calcula-tions,TLR4-MD2 dimerization SDS-PAGE detection,and surface plasmon resonance(SPR)were per-formed,indicating that PC inhibited inflammatory macrophage activation by inhibiting both TLR4-MD2 dimerization and MYD88 phosphorylation.Tlr4 knockout in vivo attenuated the promotion effect of PC on wound healing.Furthermore,a delivery system consisting of macrophage liposome and GelMA-based microneedle patches combined with PC(PC@MLIP MN)was developed,which overcame the poor water solubility and weak skin permeability of PC,so that successfully punctured the skin and delivered PC to local tissues,and accurately regulated macrophage polarization in diabetic wound management.Overall,PC is an anti-inflammatory small molecule compound with a well-defined structure and dualtarget regulation,and the PC@MLIP MN is a promising novel biomaterial for the management of diabetic wound. | Yitong Liu Guiyang Xia Yingyi Chen Huan Xia Junji Xu Lijia Guo Sheng Lin Yi Liu | 2023 | Acta Pharmaceutica Sinica B2023，13，12： | 0 |
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