Traumatic injury of the central nervous system （CNS） including brain and spinal cord remains a leading cause of morbidity and disability in the world. Delineating the mechanisms underlying the secondary and persiste...Traumatic injury of the central nervous system （CNS） including brain and spinal cord remains a leading cause of morbidity and disability in the world. Delineating the mechanisms underlying the secondary and persistent injury versus the primary and transient injury has been drawing extensive attention for study during the past few decades. The sterile neuroinflammation during the secondary phase of injury has been frequently identified substrate underlying CNS injury, but as of now, no conclusive studies have determined whether this is a beneficial or detrimental role in the context of repair. Recent pioneering studies have demonstrated the key roles for the innate and adaptive immune responses in regulating sterile neuroinflammation and CNS repair. Some promising immunotherapeutic strategies have been recently developed for the treatment of CNS injury. This review updates the recent progress on elucidating the roles of the innate and adaptive immune responses in the context of CNS injury, the development and characterization of potential immunotherapeutics, as well as outstanding questions in this field.展开更多
CD4^(+)FOXP3^(+)regulatory T cells(Tregs)are a subset of CD4 T cells that play an essential role in maintaining peripheral immune tolerance,controlling acute and chronic inflammation,allergy,autoimmune diseases,and an...CD4^(+)FOXP3^(+)regulatory T cells(Tregs)are a subset of CD4 T cells that play an essential role in maintaining peripheral immune tolerance,controlling acute and chronic inflammation,allergy,autoimmune diseases,and anti-cancer immune responses.Over the past 20 years,a significant progress has been made since Tregs were first characterized in 1995.Many concepts and principles regarding Tregs generation,phenotypic features,subsets(tTregs,pTregs,iTregs,and iTreg35),tissue specificity(central Tregs,effector Tregs,and tissue resident Tregs),homeostasis(highly dynamic and apoptotic),regulation of Tregs by receptors for PAMPs and DAMPs,Treg plasticity(re-differentiation to other CD4 T helper cell subsets,Th1,Th2,Tfh,and Th17),and epigenetic regulation of Tregs phenotypes and functions have been innovated.In this concise review,we want to briefly analyze these eight new progresses in the study of Tregs.We have also proposed for the first time a novel concept that“physiological Tregs”have been re-shaped into“pathological Tregs”in various pathological environments.Continuing of the improvement in our understanding on this important cellular component about the immune tolerance and immune suppression would lead to the future development of novel therapeutics approaches for acute and chronic inflammatory diseases,allergy,allogeneic transplantation-related immunity,sepsis,autoimmune diseases,and cancers.展开更多
文摘Traumatic injury of the central nervous system （CNS） including brain and spinal cord remains a leading cause of morbidity and disability in the world. Delineating the mechanisms underlying the secondary and persistent injury versus the primary and transient injury has been drawing extensive attention for study during the past few decades. The sterile neuroinflammation during the secondary phase of injury has been frequently identified substrate underlying CNS injury, but as of now, no conclusive studies have determined whether this is a beneficial or detrimental role in the context of repair. Recent pioneering studies have demonstrated the key roles for the innate and adaptive immune responses in regulating sterile neuroinflammation and CNS repair. Some promising immunotherapeutic strategies have been recently developed for the treatment of CNS injury. This review updates the recent progress on elucidating the roles of the innate and adaptive immune responses in the context of CNS injury, the development and characterization of potential immunotherapeutics, as well as outstanding questions in this field.
文摘CD4^(+)FOXP3^(+)regulatory T cells(Tregs)are a subset of CD4 T cells that play an essential role in maintaining peripheral immune tolerance,controlling acute and chronic inflammation,allergy,autoimmune diseases,and anti-cancer immune responses.Over the past 20 years,a significant progress has been made since Tregs were first characterized in 1995.Many concepts and principles regarding Tregs generation,phenotypic features,subsets(tTregs,pTregs,iTregs,and iTreg35),tissue specificity(central Tregs,effector Tregs,and tissue resident Tregs),homeostasis(highly dynamic and apoptotic),regulation of Tregs by receptors for PAMPs and DAMPs,Treg plasticity(re-differentiation to other CD4 T helper cell subsets,Th1,Th2,Tfh,and Th17),and epigenetic regulation of Tregs phenotypes and functions have been innovated.In this concise review,we want to briefly analyze these eight new progresses in the study of Tregs.We have also proposed for the first time a novel concept that“physiological Tregs”have been re-shaped into“pathological Tregs”in various pathological environments.Continuing of the improvement in our understanding on this important cellular component about the immune tolerance and immune suppression would lead to the future development of novel therapeutics approaches for acute and chronic inflammatory diseases,allergy,allogeneic transplantation-related immunity,sepsis,autoimmune diseases,and cancers.
