We have established an IL-2 independent malignant lymphoma line (CM-1) from peripheral T lymphocytes donated by a femalc patient with nervous systcm disease, the binlogical characteristics of CM-1 cells was studied in...We have established an IL-2 independent malignant lymphoma line (CM-1) from peripheral T lymphocytes donated by a femalc patient with nervous systcm disease, the binlogical characteristics of CM-1 cells was studied in this paper. Another T lymphocytes,such as peripheral T lymphocytes donated by a maIe patient with multiple sclerosis, could be transformed into a malignant lymphoma line by using filtered supernatant of the CM-1 cultured medium, thus the CM-2 cell line u'as estabIished. The CM-1 and CM-2 cells were transplanted by subcutaneous inoculation into nude mice, and could cause the occurrenceof typical maIignant lymphoma. The observation of eIectron micrographs suggested the existence of virions in the CM-1 and CM-2 cells, and these virions were similar toretrovirus in the ultra-structure characteristics. lt was found that this virus possesses reverse transcriptase activity. ResuIts obtained from serological assay, molecular hybridization and PCR excluded the existence of other human viruses, which were commonly usedin our laboratory. The unknown virus possesses strong transformation activity, and probably is a new retro virus. Meanwhile, the work on the clone and sequence analysis ofthis virus are being carried out.展开更多
<Abstract>AIM: To investigate how t(11;18)(q21;q21)-positive gastrointestinal MALT lymphomas relate to other marginal zone lymphomas with respect to the somatic mutation pattern of the VH genes and the expressio...<Abstract>AIM: To investigate how t(11;18)(q21;q21)-positive gastrointestinal MALT lymphomas relate to other marginal zone lymphomas with respect to the somatic mutation pattern of the VH genes and the expression of the marker CD27. METHODS: The VH gene of 7 t(11;18)(q21;q21)- positive gastrointestinal MALT lymphomas was amplif iedby PCR using family specif ic VH primers and a consensus JH primer. PCR products were sequenced and mutation analysis of the CDR and the FR regions was performed. All cases were immunostained for CD27. RESULTS: One case showed unmutated VH genes while the others showed mutated VH genes with mutation frequencies ranging from 1.3 to 14.7% and with evidence of antigen selection in 2 cases. These data suggest that the translocation t(11;18)(q21;q21) can target either B-cells at different stages of differentiation or naive B-cells that retain the capacity to differentiate upon antigen stimulation. All cases but one displayed weak to strong CD27 expression which did not correlate with the VH gene mutation status. CONCLUSION: t(11;18)(q21;q21)-positive gastrointestinal MALT lymphomas are heterogeneous with respect to the VH mutation status and CD27 is not a marker of somatically mutated B-cells.展开更多
目的:对3个血液学中心的成人早期前体T细胞白血病/淋巴瘤(ETP-ALL/LBL)患者进行回顾性分析,总结其临床特点、治疗及预后影响因素。方法:收集2006年1月至2019年1月来自北京大学第三医院、解放军第一医学中心和中国医学科学院血液学研究所...目的:对3个血液学中心的成人早期前体T细胞白血病/淋巴瘤(ETP-ALL/LBL)患者进行回顾性分析,总结其临床特点、治疗及预后影响因素。方法:收集2006年1月至2019年1月来自北京大学第三医院、解放军第一医学中心和中国医学科学院血液学研究所3个血液研究中心共113例T淋巴母细胞白血病/淋巴瘤(T-ALL/LBL)患者的临床数据资料,对其中ETP-ALL/LBL及非ETP-ALL/LBL患者的临床特征及预后进行分析比较。结果:113例T-ALL/LBL患者中,13例诊断为ETP-ALL/LBL(11.5%),其中男性患者11例(84.6%),中位年龄28(18-53)岁。与非ETP-ALL/LBL患者相比,ETP-ALL/LBL患者在年龄、性别、纵隔大包块发生率、临床分期、IPI评分、白细胞水平、乳酸脱氢酶水平方面差异无统计学意义。在13例ETP-ALL/LBL患者中,9例(69.2%)获得完全缓解,ETP-ALL/LBL患者较非ETP-ALL/LBL患者化疗诱导缓解率无统计学差异。在单纯化疗未进行异基因造血干细胞移植的患者中,ETP-ALL/LBL组较非ETP-ALL/LBL组显示出更差的5年生存率(0 vs 7.1%,P=0.008),而在进行异基因造血干细胞移植的患者中,两组5年生存率无统计学差异(37.5%vs 40.2%,P>0.05)。多因素Cox回归分析提示,诱导治疗达到完全缓解、异基因造血干细胞移植以及乳酸脱氢酶水平为影响T-ALL/LBL的独立预后因素。结论:ETP-ALL/LBL较其他类型T-ALL/LBL患者诱导化疗反应率无显著差异,诱导缓解后续贯异基因造血干细胞移植巩固治疗对于提高ETP-ALL/LBL患者远期生存率具有重要意义。展开更多
结外鼻型NK/T细胞淋巴瘤(extranodal nasal type NK/T-cell lymphoma,ENKTL)是一种以破坏面部中份结构为主的NK/T细胞来源的非霍奇金淋巴瘤,临床少见。以口腔黏膜溃疡为首发症状的病例罕见且易与其他疾病相混淆,在诊断上极其困难。本文...结外鼻型NK/T细胞淋巴瘤(extranodal nasal type NK/T-cell lymphoma,ENKTL)是一种以破坏面部中份结构为主的NK/T细胞来源的非霍奇金淋巴瘤,临床少见。以口腔黏膜溃疡为首发症状的病例罕见且易与其他疾病相混淆,在诊断上极其困难。本文报道1例以颊黏膜及牙龈溃疡为首发表现的ENKTL的多学科诊疗,并分析该疾病的临床病理学特征、诊断、鉴别诊断和治疗,以期为临床诊治相关病例提供参考。展开更多
滤泡辅助性T细胞(follicular helper T cell,Tfh)属于CD4^(+)T细胞亚群,有独特的表型及功能特性。Tfh细胞存在于淋巴组织的生发中心及外周血中,具有支持淋巴滤泡生发中心(germinal center,GC)的形成、促进B细胞成熟和决定B细胞分化以及...滤泡辅助性T细胞(follicular helper T cell,Tfh)属于CD4^(+)T细胞亚群,有独特的表型及功能特性。Tfh细胞存在于淋巴组织的生发中心及外周血中,具有支持淋巴滤泡生发中心(germinal center,GC)的形成、促进B细胞成熟和决定B细胞分化以及抗体的产生、类别转换的功能,Tfh细胞数量、功能、亚型等的异常与恶性血液病的发生、进展及预后相关。该文就Tfh细胞的分化、分型以及其在不同类型恶性血液病中的表达和作用进行综述,为进一步揭示淋巴瘤、骨髓增生异常综合征、白血病等疾病的发病机制,靶向该细胞来治疗此类疾病提供新的思路。展开更多
文摘We have established an IL-2 independent malignant lymphoma line (CM-1) from peripheral T lymphocytes donated by a femalc patient with nervous systcm disease, the binlogical characteristics of CM-1 cells was studied in this paper. Another T lymphocytes,such as peripheral T lymphocytes donated by a maIe patient with multiple sclerosis, could be transformed into a malignant lymphoma line by using filtered supernatant of the CM-1 cultured medium, thus the CM-2 cell line u'as estabIished. The CM-1 and CM-2 cells were transplanted by subcutaneous inoculation into nude mice, and could cause the occurrenceof typical maIignant lymphoma. The observation of eIectron micrographs suggested the existence of virions in the CM-1 and CM-2 cells, and these virions were similar toretrovirus in the ultra-structure characteristics. lt was found that this virus possesses reverse transcriptase activity. ResuIts obtained from serological assay, molecular hybridization and PCR excluded the existence of other human viruses, which were commonly usedin our laboratory. The unknown virus possesses strong transformation activity, and probably is a new retro virus. Meanwhile, the work on the clone and sequence analysis ofthis virus are being carried out.
基金Supported by A Grant of the "Belgian Cancer Association"the "Fonds voor Wetenschappelijk Onderzoek Vlaanderen"
文摘<Abstract>AIM: To investigate how t(11;18)(q21;q21)-positive gastrointestinal MALT lymphomas relate to other marginal zone lymphomas with respect to the somatic mutation pattern of the VH genes and the expression of the marker CD27. METHODS: The VH gene of 7 t(11;18)(q21;q21)- positive gastrointestinal MALT lymphomas was amplif iedby PCR using family specif ic VH primers and a consensus JH primer. PCR products were sequenced and mutation analysis of the CDR and the FR regions was performed. All cases were immunostained for CD27. RESULTS: One case showed unmutated VH genes while the others showed mutated VH genes with mutation frequencies ranging from 1.3 to 14.7% and with evidence of antigen selection in 2 cases. These data suggest that the translocation t(11;18)(q21;q21) can target either B-cells at different stages of differentiation or naive B-cells that retain the capacity to differentiate upon antigen stimulation. All cases but one displayed weak to strong CD27 expression which did not correlate with the VH gene mutation status. CONCLUSION: t(11;18)(q21;q21)-positive gastrointestinal MALT lymphomas are heterogeneous with respect to the VH mutation status and CD27 is not a marker of somatically mutated B-cells.
文摘目的:对3个血液学中心的成人早期前体T细胞白血病/淋巴瘤(ETP-ALL/LBL)患者进行回顾性分析,总结其临床特点、治疗及预后影响因素。方法:收集2006年1月至2019年1月来自北京大学第三医院、解放军第一医学中心和中国医学科学院血液学研究所3个血液研究中心共113例T淋巴母细胞白血病/淋巴瘤(T-ALL/LBL)患者的临床数据资料,对其中ETP-ALL/LBL及非ETP-ALL/LBL患者的临床特征及预后进行分析比较。结果:113例T-ALL/LBL患者中,13例诊断为ETP-ALL/LBL(11.5%),其中男性患者11例(84.6%),中位年龄28(18-53)岁。与非ETP-ALL/LBL患者相比,ETP-ALL/LBL患者在年龄、性别、纵隔大包块发生率、临床分期、IPI评分、白细胞水平、乳酸脱氢酶水平方面差异无统计学意义。在13例ETP-ALL/LBL患者中,9例(69.2%)获得完全缓解,ETP-ALL/LBL患者较非ETP-ALL/LBL患者化疗诱导缓解率无统计学差异。在单纯化疗未进行异基因造血干细胞移植的患者中,ETP-ALL/LBL组较非ETP-ALL/LBL组显示出更差的5年生存率(0 vs 7.1%,P=0.008),而在进行异基因造血干细胞移植的患者中,两组5年生存率无统计学差异(37.5%vs 40.2%,P>0.05)。多因素Cox回归分析提示,诱导治疗达到完全缓解、异基因造血干细胞移植以及乳酸脱氢酶水平为影响T-ALL/LBL的独立预后因素。结论:ETP-ALL/LBL较其他类型T-ALL/LBL患者诱导化疗反应率无显著差异,诱导缓解后续贯异基因造血干细胞移植巩固治疗对于提高ETP-ALL/LBL患者远期生存率具有重要意义。
文摘结外鼻型NK/T细胞淋巴瘤(extranodal nasal type NK/T-cell lymphoma,ENKTL)是一种以破坏面部中份结构为主的NK/T细胞来源的非霍奇金淋巴瘤,临床少见。以口腔黏膜溃疡为首发症状的病例罕见且易与其他疾病相混淆,在诊断上极其困难。本文报道1例以颊黏膜及牙龈溃疡为首发表现的ENKTL的多学科诊疗,并分析该疾病的临床病理学特征、诊断、鉴别诊断和治疗,以期为临床诊治相关病例提供参考。
文摘滤泡辅助性T细胞(follicular helper T cell,Tfh)属于CD4^(+)T细胞亚群,有独特的表型及功能特性。Tfh细胞存在于淋巴组织的生发中心及外周血中,具有支持淋巴滤泡生发中心(germinal center,GC)的形成、促进B细胞成熟和决定B细胞分化以及抗体的产生、类别转换的功能,Tfh细胞数量、功能、亚型等的异常与恶性血液病的发生、进展及预后相关。该文就Tfh细胞的分化、分型以及其在不同类型恶性血液病中的表达和作用进行综述,为进一步揭示淋巴瘤、骨髓增生异常综合征、白血病等疾病的发病机制,靶向该细胞来治疗此类疾病提供新的思路。
