Leukocytes from peripheral blood (PB) are of great value for diagnosis as well as basic and clinical research. However, no easy, centrifugation-free method is available for the isolation of live leukocytes from blood....Leukocytes from peripheral blood (PB) are of great value for diagnosis as well as basic and clinical research. However, no easy, centrifugation-free method is available for the isolation of live leukocytes from blood. We here develop a simple and quick method for the purification of viable leukocytes from whole blood using novel tools, named tLeukoCatch (tip-type) or sLeukoCatch (syringe-type), which is equipped with three Pall filter layers and captures leukocytes but not red blood cells (RBCs) in whole blood. Indeed, we showed that several million leukocytes per mL (~35% of the recovery rate) were captured and eluted from whole blood. The number of contaminant RBCs decreased from several million to several thousand. When mouse blood was hemolysed, almost all of the lysed RBC fragments were removed by passage through sLeukoCatch. Optical microscopic observation confirmed that the recovered leukocytes were sufficiently healthy to respond to growth stimuli. Efficient leukocyte recovery was also confirmed for hemolysed human blood. These results suggest that the LeukoCatchTM system is useful for bedside diagnosis and basic research with blood samples.展开更多
Introduction Autoimmune pancreatitis(AIP)is one of the recently established immunoglobulin G4-related diseases(IgG4-RD)[1].The detailed pathogenic mechanisms have been an intensive research area for prophylactic and t...Introduction Autoimmune pancreatitis(AIP)is one of the recently established immunoglobulin G4-related diseases(IgG4-RD)[1].The detailed pathogenic mechanisms have been an intensive research area for prophylactic and therapeutic purposes because aberrant immune activation and tissue fibrosis in AIP are the major factors that worsen the disease outcomes in these patients.展开更多
文摘Leukocytes from peripheral blood (PB) are of great value for diagnosis as well as basic and clinical research. However, no easy, centrifugation-free method is available for the isolation of live leukocytes from blood. We here develop a simple and quick method for the purification of viable leukocytes from whole blood using novel tools, named tLeukoCatch (tip-type) or sLeukoCatch (syringe-type), which is equipped with three Pall filter layers and captures leukocytes but not red blood cells (RBCs) in whole blood. Indeed, we showed that several million leukocytes per mL (~35% of the recovery rate) were captured and eluted from whole blood. The number of contaminant RBCs decreased from several million to several thousand. When mouse blood was hemolysed, almost all of the lysed RBC fragments were removed by passage through sLeukoCatch. Optical microscopic observation confirmed that the recovered leukocytes were sufficiently healthy to respond to growth stimuli. Efficient leukocyte recovery was also confirmed for hemolysed human blood. These results suggest that the LeukoCatchTM system is useful for bedside diagnosis and basic research with blood samples.
基金supported by the Japan Agency for Medical Research and Development[JP21gm0910010,JP21ak0101070 to S.Y.]the Japan Society for the Promotion of Science KAKENHI[JP23H00403,JP22H05183 to S.Y.and JP16K08740,JP20K07539,JP23H04784 to K.S.]and the Kurozumi Medical Foundation to K.S.
文摘Introduction Autoimmune pancreatitis(AIP)is one of the recently established immunoglobulin G4-related diseases(IgG4-RD)[1].The detailed pathogenic mechanisms have been an intensive research area for prophylactic and therapeutic purposes because aberrant immune activation and tissue fibrosis in AIP are the major factors that worsen the disease outcomes in these patients.
