Differentiation of oligodendrocyte progenitor cells into mature myelin-forming oligodendrocytes contributes to remyelination.Failure of remyelination due to oligodendrocyte progenitor cell death can result in severe n...Differentiation of oligodendrocyte progenitor cells into mature myelin-forming oligodendrocytes contributes to remyelination.Failure of remyelination due to oligodendrocyte progenitor cell death can result in severe nerve damage.Ferroptosis is an iron-dependent form of regulated cell death caused by membrane rupture induced by lipid peroxidation,and plays an important role in the pathological process of ischemic stroke.However,there are few studies on oligodendrocyte progenitor cell ferroptosis.We analyzed transcriptome sequencing data from GEO databases and identified a role of ferroptosis in oligodendrocyte progenitor cell death and myelin injury after cerebral ischemia.Bioinformatics analysis suggested that perilipin-2(PLIN2)was involved in oligodendrocyte progenitor cell ferroptosis.PLIN2 is a lipid storage protein and a marker of hypoxia-sensitive lipid droplet accumulation.For further investigation,we established a mouse model of cerebral ischemia/reperfusion.We found significant myelin damage after cerebral ischemia,as well as oligodendrocyte progenitor cell death and increased lipid peroxidation levels around the infarct area.The ferroptosis inhibitor,ferrostatin-1,rescued oligodendrocyte progenitor cell death and subsequent myelin injury.We also found increased PLIN2 levels in the peri-infarct area that co-localized with oligodendrocyte progenitor cells.Plin2 knockdown rescued demyelination and improved neurological deficits.Our findings suggest that targeting PLIN2 to regulate oligodendrocyte progenitor cell ferroptosis may be a potential therapeutic strategy for rescuing myelin damage after cerebral ischemia.展开更多
The title compound C 13 H 9ClN 2(M=228.67) was prepared,and its single crystal was obtained.The crystal belongs to orthorhombic system,space group Pbca with cell parameters:a=0.70567(8),b=0.9978(2),c= 3.2464(4)nm ,V=2...The title compound C 13 H 9ClN 2(M=228.67) was prepared,and its single crystal was obtained.The crystal belongs to orthorhombic system,space group Pbca with cell parameters:a=0.70567(8),b=0.9978(2),c= 3.2464(4)nm ,V=2.2858(6)nm 3,Z=8,Dc=1.329kg/dm 3,F(000)=944,μ=0.305mm -1 .2377 independent reflections were collected,in which 1214[I>2σ(I)] reflections that could be observed were used for the structural analysis.The final refinement converged to R=0.0421,wR=0.0999,(Δ/σ) max =0.001,S=0.833.The dicyclic ring of benzimidazole and chlorobenzene ring formed a propeller configuration in the compound.展开更多
基金supported by the National Natural Science Foundation of China,Nos.82071307(to HL),82271362(to HL),82171294(to JW),82371303(to JW),and 82301460(to PX)the Natural Science Foundation of Jiangsu Province,No.BK20211552(to HL)+1 种基金Suzhou Medical Technology Innovation Project-Clinical Frontier,No.SKY2022002(to ZY)the Science and Education Foundation for Health of Suzhou for Youth,No.KJXW2023001(to XL)。
文摘Differentiation of oligodendrocyte progenitor cells into mature myelin-forming oligodendrocytes contributes to remyelination.Failure of remyelination due to oligodendrocyte progenitor cell death can result in severe nerve damage.Ferroptosis is an iron-dependent form of regulated cell death caused by membrane rupture induced by lipid peroxidation,and plays an important role in the pathological process of ischemic stroke.However,there are few studies on oligodendrocyte progenitor cell ferroptosis.We analyzed transcriptome sequencing data from GEO databases and identified a role of ferroptosis in oligodendrocyte progenitor cell death and myelin injury after cerebral ischemia.Bioinformatics analysis suggested that perilipin-2(PLIN2)was involved in oligodendrocyte progenitor cell ferroptosis.PLIN2 is a lipid storage protein and a marker of hypoxia-sensitive lipid droplet accumulation.For further investigation,we established a mouse model of cerebral ischemia/reperfusion.We found significant myelin damage after cerebral ischemia,as well as oligodendrocyte progenitor cell death and increased lipid peroxidation levels around the infarct area.The ferroptosis inhibitor,ferrostatin-1,rescued oligodendrocyte progenitor cell death and subsequent myelin injury.We also found increased PLIN2 levels in the peri-infarct area that co-localized with oligodendrocyte progenitor cells.Plin2 knockdown rescued demyelination and improved neurological deficits.Our findings suggest that targeting PLIN2 to regulate oligodendrocyte progenitor cell ferroptosis may be a potential therapeutic strategy for rescuing myelin damage after cerebral ischemia.
文摘The title compound C 13 H 9ClN 2(M=228.67) was prepared,and its single crystal was obtained.The crystal belongs to orthorhombic system,space group Pbca with cell parameters:a=0.70567(8),b=0.9978(2),c= 3.2464(4)nm ,V=2.2858(6)nm 3,Z=8,Dc=1.329kg/dm 3,F(000)=944,μ=0.305mm -1 .2377 independent reflections were collected,in which 1214[I>2σ(I)] reflections that could be observed were used for the structural analysis.The final refinement converged to R=0.0421,wR=0.0999,(Δ/σ) max =0.001,S=0.833.The dicyclic ring of benzimidazole and chlorobenzene ring formed a propeller configuration in the compound.
