Using two-colour flow cytometry>200 antibodies submitted to the 8^(th) International Workshop of Human Leukocyte Differentiation Antigens(HLDA8)have been analyzed for their reactivity with resting and activated CD2...Using two-colour flow cytometry>200 antibodies submitted to the 8^(th) International Workshop of Human Leukocyte Differentiation Antigens(HLDA8)have been analyzed for their reactivity with resting and activated CD203c^(+)basophils.Four antibodies either non-reactive or weakly reactive with resting basophils exhibited an increased reactivity with basophils activated by anti-IgE-mediated cross-linking of the high affinity IgE receptor(FcεRI).These include antibod-ies against CD164(WS-80160,clone N6B6 and WS-80162,clone 67D2),as well as two reagents with previously unknown specificities that were identified as CD13(WS-80274,clone A8)and CD107a(WS-80280,clone E63-880).The activation patterns followed either the“CD203c-like”or“CD63-like”activation profile.The CD203c profile is characterized by a rapid and significant upregulation(of CD13,CD164,and CD203c),reaching maximum levels after 5-15 min of stimulation.The phosphoinositide-3-kinase(PI3K)-specific inhibitor wortmannin inhibited the upregulation of these markers whereas 12-O-tetradecanoyl-phorbol-13-acetate(TPA)induced a rapid and FcεRI-independent upregulation within 1-2 min.In the CD63 profile,maximum upregulation(of CD63 and CD107a)was detected only after 20-40 min,and upregulation by TPA reached maximum levels after 60 min.In summary,our data identify CD13,CD107a,and CD164 as novel basophil-activation antigens.Based on time kinetics of upregulation,we hypothesize that molecules of the“CD203c group”and the“CD63 group”are linked to two different mechanisms of basophil activation.展开更多
Objective To investigate the expressions of CD107a and CD107b on CD8+T lymphocytes in chronic hepatitis B(CHB)patients with different immune status.Methods Forty-three CHB patients were collected and classified accord...Objective To investigate the expressions of CD107a and CD107b on CD8+T lymphocytes in chronic hepatitis B(CHB)patients with different immune status.Methods Forty-three CHB patients were collected and classified according to the immune status(23 cases of atypical status,10 cases of immune tolerance and 10 cases of immune clearance).Another 10 cases were selected展开更多
目的:探讨视黄酸早期转录因子1ε(retinoic acid early transcript 1ε,RAE-1ε)和膜型IL-15对小鼠NK细胞杀伤功能的影响。方法:前期研究以小鼠原B淋巴细胞株BaF3为基础构建了3株BaF3工程细胞株,即表达膜型IL-15的BaF3/mb15细胞、表达RA...目的:探讨视黄酸早期转录因子1ε(retinoic acid early transcript 1ε,RAE-1ε)和膜型IL-15对小鼠NK细胞杀伤功能的影响。方法:前期研究以小鼠原B淋巴细胞株BaF3为基础构建了3株BaF3工程细胞株,即表达膜型IL-15的BaF3/mb15细胞、表达RAE-1ε的BaF3/RAE细胞和同时表达膜型IL-15和RAE-1ε的BaF3/mb15/RAE细胞。将γ射线灭活后的3株BaF3工程细胞株作为刺激细胞,分别刺激小鼠NK细胞。流式细胞术检测刺激后NK细胞表面分子的表达,胞内染色法检测NK细胞穿孔素和颗粒酶B的分泌,流式细胞术检测NK细胞对小鼠淋巴瘤YAC1细胞的杀伤活性。结果:与BaF3/mb15和BaF3/RAE细胞相比,BaF3/mb15/RAE细胞可有效上调NK细胞表面CD25、CD44、FasL和CD107a的表达,但对穿孔素和颗粒酶B的分泌没有明显刺激作用。当效靶比为20:1时,BaF3/mb15、BaF3/RAE和BaF3/mb15/RAE细胞刺激后NK细胞对靶细胞YAC1的杀伤率分别为(39.7±2.9)%、(45.3±2.3)%和(59.0±6.9)%,均高于BaF3组的(28.3±1.5)%(P<0.01),且BaF3/mb15/RAE组高于BaF3/mb15和BaF3/RAE组(P<0.05)。结论:膜型IL-15联合RAE-1ε可促进NK细胞活化并增强NK细胞的杀伤活性。展开更多
基金This work was supported by a grant from the Deutsche Forschungsgemeinschaft,SFB 510-A1(F.H.and H.-J.B.),by the fortueneproject F1282700 of the univer-sity of Tuebingen(H.-J.B)by the Fonds zur Forderung der wissnschaflichen Forschung in Osterreich,SFB grant-project 018/09(P.V.).
文摘Using two-colour flow cytometry>200 antibodies submitted to the 8^(th) International Workshop of Human Leukocyte Differentiation Antigens(HLDA8)have been analyzed for their reactivity with resting and activated CD203c^(+)basophils.Four antibodies either non-reactive or weakly reactive with resting basophils exhibited an increased reactivity with basophils activated by anti-IgE-mediated cross-linking of the high affinity IgE receptor(FcεRI).These include antibod-ies against CD164(WS-80160,clone N6B6 and WS-80162,clone 67D2),as well as two reagents with previously unknown specificities that were identified as CD13(WS-80274,clone A8)and CD107a(WS-80280,clone E63-880).The activation patterns followed either the“CD203c-like”or“CD63-like”activation profile.The CD203c profile is characterized by a rapid and significant upregulation(of CD13,CD164,and CD203c),reaching maximum levels after 5-15 min of stimulation.The phosphoinositide-3-kinase(PI3K)-specific inhibitor wortmannin inhibited the upregulation of these markers whereas 12-O-tetradecanoyl-phorbol-13-acetate(TPA)induced a rapid and FcεRI-independent upregulation within 1-2 min.In the CD63 profile,maximum upregulation(of CD63 and CD107a)was detected only after 20-40 min,and upregulation by TPA reached maximum levels after 60 min.In summary,our data identify CD13,CD107a,and CD164 as novel basophil-activation antigens.Based on time kinetics of upregulation,we hypothesize that molecules of the“CD203c group”and the“CD63 group”are linked to two different mechanisms of basophil activation.
文摘Objective To investigate the expressions of CD107a and CD107b on CD8+T lymphocytes in chronic hepatitis B(CHB)patients with different immune status.Methods Forty-three CHB patients were collected and classified according to the immune status(23 cases of atypical status,10 cases of immune tolerance and 10 cases of immune clearance).Another 10 cases were selected
文摘目的:探讨视黄酸早期转录因子1ε(retinoic acid early transcript 1ε,RAE-1ε)和膜型IL-15对小鼠NK细胞杀伤功能的影响。方法:前期研究以小鼠原B淋巴细胞株BaF3为基础构建了3株BaF3工程细胞株,即表达膜型IL-15的BaF3/mb15细胞、表达RAE-1ε的BaF3/RAE细胞和同时表达膜型IL-15和RAE-1ε的BaF3/mb15/RAE细胞。将γ射线灭活后的3株BaF3工程细胞株作为刺激细胞,分别刺激小鼠NK细胞。流式细胞术检测刺激后NK细胞表面分子的表达,胞内染色法检测NK细胞穿孔素和颗粒酶B的分泌,流式细胞术检测NK细胞对小鼠淋巴瘤YAC1细胞的杀伤活性。结果:与BaF3/mb15和BaF3/RAE细胞相比,BaF3/mb15/RAE细胞可有效上调NK细胞表面CD25、CD44、FasL和CD107a的表达,但对穿孔素和颗粒酶B的分泌没有明显刺激作用。当效靶比为20:1时,BaF3/mb15、BaF3/RAE和BaF3/mb15/RAE细胞刺激后NK细胞对靶细胞YAC1的杀伤率分别为(39.7±2.9)%、(45.3±2.3)%和(59.0±6.9)%,均高于BaF3组的(28.3±1.5)%(P<0.01),且BaF3/mb15/RAE组高于BaF3/mb15和BaF3/RAE组(P<0.05)。结论:膜型IL-15联合RAE-1ε可促进NK细胞活化并增强NK细胞的杀伤活性。
