Vitiligo results in an autoimmune disorder destructing skin pigment cells,melanocytes(Mcs).This study aimed to investigate whether Astragaloside IV(AIV)could efficiently induce differentiation of bone marrow mesenchym...Vitiligo results in an autoimmune disorder destructing skin pigment cells,melanocytes(Mcs).This study aimed to investigate whether Astragaloside IV(AIV)could efficiently induce differentiation of bone marrow mesenchymal stem cells(BMMSCs)into Mcs.BMMSCs were induced and differentiated into Mcs with 0.1,0.2,and 0.4 mg/L AIV during 150-day.Morphologic changes of differentiated cells were observed.Levels of some melanocytic specific genes(TRP-1,TRP-2,MART-1,Mitf)were measured with quantitative polymerase chain reaction(qPCR)at 90,120,and 150 days of induction.After 90-day induction,the differentiated cells with 0.4 mg/L AIV demonstrated the typical morphology of Mcs,positive 3,4 dihydroxyphenylalanine staining,and positive staining of TRP-1,TRP-2,MART-1,and Mitf.After 90-and 120-days’induction with 0.4 mg/L AIV,TRP-1 expression was significantly elevated(p<0.01),and TRP-2 expression was significantly increased in 0.4 mg/L AIV-treated group compared to negative control(p<0.01),0.1 mg/L(p<0.01),and 0.2 mg/L(p<0.01)AIV-treated groups.Moreover,MART-1 expression was significantly up-regulated in 0.4 mg/L AIV-treated group compared to negative control,but without difference compared to 0.1 mg/L(p>0.05)and 0.2 mg/L(p>0.05)AIV-treated groups.During 90 to 150-day induction,there were no significant differences for Mitf levels between AIV-treated groups and negative control(p>0.05).In conclusion,90-day induction with 0.4 mg/L AIV up-regulated TRP-1,TRP-2,and MART-1 expression,indicating that AIV can efficiently induce Mcs differentiation from BMMSCs.These results provide experimental and theoretic evidence for AIV application in clinical vitiligo repigmentation treatment.展开更多
Malignant lymphoproliferative disorders are common diseases characterized by the clonal proliferation of cells derived from the lymphocytes of different developmental stages. The analyses of routine morphology and cyt...Malignant lymphoproliferative disorders are common diseases characterized by the clonal proliferation of cells derived from the lymphocytes of different developmental stages. The analyses of routine morphology and cytochemistry fail to determine the origin and differentiation stages. The cell differentiation origin of most of malignant lymphoproliferative disorders can be defined by using monoclonal antibodies(McAbs) against the differentiation antigens of lymphocytes, but it is unable to determine the cell origin of a minority of undifferentiated malignancies and also fails to distinguish the malig-展开更多
Leu 7(HNK-1),a glycoprotein,is a specific antigen presented on the surfaceof human natural killer cells and killer cells.In this study ABC immunostaining with spe-cific monoclonal antibody to Leu 7 was used to detect ...Leu 7(HNK-1),a glycoprotein,is a specific antigen presented on the surfaceof human natural killer cells and killer cells.In this study ABC immunostaining with spe-cific monoclonal antibody to Leu 7 was used to detect the expression of Leu 7 in humanlung.The results demonstrated that the Leu 7 immunoreactivity was localized in theneuroepithelial bodies(NEB)and neuroendocrine cells(NEC)of the human lung.In addi-tion,the anti-Leu 7 monoclonal antibody stained the nerve fibers in the wall of theintrapulmonary bronchi.Adjacent sections immunostained with antibodies to Leu 7 and5-hydroxytryptamin(5-HT)or calcitonin gene-related peptide(CGRP)proved thecoexistence of Leu 7 and CGRP or 5-HT in endocrine cells.The CGRP immunoreactivenerve fibers also showed positive staining with the monoclonal antibody to Leu 7.Ourfindings support the hypothesis that the nervous and endocrine systems share some com-mon antigenic determinants with the immune system.展开更多
目的:研究血复生对再生障碍性贫血(aplastic anemia,AA)患者骨髓T细胞表面分化决定簇28(cluster of differentiation 28,CD28)和(或)细胞毒T细胞相关抗原4(cytotoxic T cell antigen 4,CTLA4)表达的影响,探讨血复生治疗AA的作用机制。方...目的:研究血复生对再生障碍性贫血(aplastic anemia,AA)患者骨髓T细胞表面分化决定簇28(cluster of differentiation 28,CD28)和(或)细胞毒T细胞相关抗原4(cytotoxic T cell antigen 4,CTLA4)表达的影响,探讨血复生治疗AA的作用机制。方法:将2006年6月至2008年6月江苏省中医院血液科门诊及住院的30例重型AA患者随机分为两组,治疗组使用血复生加环孢菌素治疗,对照组单用环孢菌素治疗。10名自愿者骨髓为正常对照组。观察时间为3个月,双色免疫荧光法测定治疗组及对照组治疗前后及正常对照组骨髓T细胞表面CD28、CTLA4表达的变化。结果:AA患者治疗前CD28的水平较正常人显著升高,差异有显著性(P<0.05),CTLA4水平有所上升,但差异无显著性(P>0.05)。治疗组及对照组CD28水平较用药前显著下降(P<0.05),治疗组较对照组下降更显著(P<0.05)。结论:血复生可增强环孢菌素的免疫调节作用,对AA的治疗起到增效作用。展开更多
基金the National Natural Science Foundation of China(Grant No.81703140).
文摘Vitiligo results in an autoimmune disorder destructing skin pigment cells,melanocytes(Mcs).This study aimed to investigate whether Astragaloside IV(AIV)could efficiently induce differentiation of bone marrow mesenchymal stem cells(BMMSCs)into Mcs.BMMSCs were induced and differentiated into Mcs with 0.1,0.2,and 0.4 mg/L AIV during 150-day.Morphologic changes of differentiated cells were observed.Levels of some melanocytic specific genes(TRP-1,TRP-2,MART-1,Mitf)were measured with quantitative polymerase chain reaction(qPCR)at 90,120,and 150 days of induction.After 90-day induction,the differentiated cells with 0.4 mg/L AIV demonstrated the typical morphology of Mcs,positive 3,4 dihydroxyphenylalanine staining,and positive staining of TRP-1,TRP-2,MART-1,and Mitf.After 90-and 120-days’induction with 0.4 mg/L AIV,TRP-1 expression was significantly elevated(p<0.01),and TRP-2 expression was significantly increased in 0.4 mg/L AIV-treated group compared to negative control(p<0.01),0.1 mg/L(p<0.01),and 0.2 mg/L(p<0.01)AIV-treated groups.Moreover,MART-1 expression was significantly up-regulated in 0.4 mg/L AIV-treated group compared to negative control,but without difference compared to 0.1 mg/L(p>0.05)and 0.2 mg/L(p>0.05)AIV-treated groups.During 90 to 150-day induction,there were no significant differences for Mitf levels between AIV-treated groups and negative control(p>0.05).In conclusion,90-day induction with 0.4 mg/L AIV up-regulated TRP-1,TRP-2,and MART-1 expression,indicating that AIV can efficiently induce Mcs differentiation from BMMSCs.These results provide experimental and theoretic evidence for AIV application in clinical vitiligo repigmentation treatment.
基金Project supported by the Commission of Science and Technology of Shandong Province.
文摘Malignant lymphoproliferative disorders are common diseases characterized by the clonal proliferation of cells derived from the lymphocytes of different developmental stages. The analyses of routine morphology and cytochemistry fail to determine the origin and differentiation stages. The cell differentiation origin of most of malignant lymphoproliferative disorders can be defined by using monoclonal antibodies(McAbs) against the differentiation antigens of lymphocytes, but it is unable to determine the cell origin of a minority of undifferentiated malignancies and also fails to distinguish the malig-
文摘Leu 7(HNK-1),a glycoprotein,is a specific antigen presented on the surfaceof human natural killer cells and killer cells.In this study ABC immunostaining with spe-cific monoclonal antibody to Leu 7 was used to detect the expression of Leu 7 in humanlung.The results demonstrated that the Leu 7 immunoreactivity was localized in theneuroepithelial bodies(NEB)and neuroendocrine cells(NEC)of the human lung.In addi-tion,the anti-Leu 7 monoclonal antibody stained the nerve fibers in the wall of theintrapulmonary bronchi.Adjacent sections immunostained with antibodies to Leu 7 and5-hydroxytryptamin(5-HT)or calcitonin gene-related peptide(CGRP)proved thecoexistence of Leu 7 and CGRP or 5-HT in endocrine cells.The CGRP immunoreactivenerve fibers also showed positive staining with the monoclonal antibody to Leu 7.Ourfindings support the hypothesis that the nervous and endocrine systems share some com-mon antigenic determinants with the immune system.
文摘目的:研究血复生对再生障碍性贫血(aplastic anemia,AA)患者骨髓T细胞表面分化决定簇28(cluster of differentiation 28,CD28)和(或)细胞毒T细胞相关抗原4(cytotoxic T cell antigen 4,CTLA4)表达的影响,探讨血复生治疗AA的作用机制。方法:将2006年6月至2008年6月江苏省中医院血液科门诊及住院的30例重型AA患者随机分为两组,治疗组使用血复生加环孢菌素治疗,对照组单用环孢菌素治疗。10名自愿者骨髓为正常对照组。观察时间为3个月,双色免疫荧光法测定治疗组及对照组治疗前后及正常对照组骨髓T细胞表面CD28、CTLA4表达的变化。结果:AA患者治疗前CD28的水平较正常人显著升高,差异有显著性(P<0.05),CTLA4水平有所上升,但差异无显著性(P>0.05)。治疗组及对照组CD28水平较用药前显著下降(P<0.05),治疗组较对照组下降更显著(P<0.05)。结论:血复生可增强环孢菌素的免疫调节作用,对AA的治疗起到增效作用。
