间变大细胞淋巴瘤(anaplastic large cell lymphoma,ALCL)是一种恶性程度高且异质性明显的T细胞淋巴瘤,约占成人非霍奇金淋巴瘤的3%及儿童淋巴瘤的10%~20%[1]。1985年Stein等[2]发现ALCL以多形性大细胞增殖为主及高表达CD30(Ki-1),其最...间变大细胞淋巴瘤(anaplastic large cell lymphoma,ALCL)是一种恶性程度高且异质性明显的T细胞淋巴瘤,约占成人非霍奇金淋巴瘤的3%及儿童淋巴瘤的10%~20%[1]。1985年Stein等[2]发现ALCL以多形性大细胞增殖为主及高表达CD30(Ki-1),其最常见的染色体异常是t(2;5)(p23;q35),即2号染色体上的间变性淋巴瘤激酶(anaplastic lymphoma kinase,ALK)基因和5号染色体上的核磷蛋白(nucleophosmin,NPM)基因融合产生了融合基因NPM-ALK。展开更多
本研究应用组织芯片技术探讨间变性大细胞淋巴瘤(anaplastic large cell lymphoma,ALCL)中染色体移位产生的间变性淋巴瘤激酶(ALK)蛋白的表达及其与患者年龄和预后的关系。建立包含30例ALCL及2例对照组织共96点阵的组织芯片,采用免疫组...本研究应用组织芯片技术探讨间变性大细胞淋巴瘤(anaplastic large cell lymphoma,ALCL)中染色体移位产生的间变性淋巴瘤激酶(ALK)蛋白的表达及其与患者年龄和预后的关系。建立包含30例ALCL及2例对照组织共96点阵的组织芯片,采用免疫组织化学SP法检测ALK蛋白表达,并应用SPSS软件进行统计学分析。结果显示:①ALK蛋白在2例皮肤原发ALCL患者中表达均为阴性,28例系统性ALCL中有20例(71.4%)表达为阳性,其表现主要为细胞浆和(或)细胞核棕黄色;②ALK蛋白阳性组的年龄低于ALK蛋白阴性组,两者统计学差异具有显著性(p<0.05);③ALK蛋白阳性组的预后好于ALK蛋白阴性组,两者统计学差异具有显著性(p<0.05)。结论:ALK蛋白的表达在ALCL中有很高的发生率,尤其是在低年龄组的患者,它可以作为ALCL的诊断、鉴别诊断和判断预后的一个独立重要指标。展开更多
Objective To explore correlation of seven apoptosis-related proteins (Hsp9Oa, p53, MDM2, Bcl-2, Bax, Cytochrome C, and Cleaved caspase3) with clinical outcomes of ALK+ anaplastic large-cell lymphoma (ALCL). Metho...Objective To explore correlation of seven apoptosis-related proteins (Hsp9Oa, p53, MDM2, Bcl-2, Bax, Cytochrome C, and Cleaved caspase3) with clinical outcomes of ALK+ anaplastic large-cell lymphoma (ALCL). Methods Using immunohistochemistry and immunofluorescence double staining methods, the expressions of these seven apoptosis-associated proteins were studied to clarify their relationship with clinical outcomes of 36 ALK+ and 25 ALK- systemic ALCL patients enrolled between 1996 and 2006. The relationship of these apoptosis-regulating proteins with NPM-ALK status was also evaluated with the tyrosine inhibitor herbimycin A (HA) in vitro by immunocytochemistry, Western blotting and flow cytometric assays. Results The presence of Hsp90a-, MDM2-, Bax-, Cytochrome C, and Cleaved caspase3-positive tumor cells was found significantly different in ALK+ and ALK- ALCLs , which was correlated with highly favorable clinical outcome. The Bcl-2- and p53-positive tumor cells were found in groups of patients with unfavorable prognosis. Inhibition of NPM-ALK by HA could reactivate the p53 protein and subsequent apoptosis-related proteins and therefore induced apoptosis in ALK+ ALCL cells. Conclusion Our results suggest that these seven proteins might be involved in apoptosis regulation and associated with clinical outcome of ALK+ systemic ALCLs. We also reveal a dynamic chain relation that NPM-ALK regulates p53 expression and subsequent apoptosis cascade in ALK+ ALCLs.展开更多
文摘本研究应用组织芯片技术探讨间变性大细胞淋巴瘤(anaplastic large cell lymphoma,ALCL)中染色体移位产生的间变性淋巴瘤激酶(ALK)蛋白的表达及其与患者年龄和预后的关系。建立包含30例ALCL及2例对照组织共96点阵的组织芯片,采用免疫组织化学SP法检测ALK蛋白表达,并应用SPSS软件进行统计学分析。结果显示:①ALK蛋白在2例皮肤原发ALCL患者中表达均为阴性,28例系统性ALCL中有20例(71.4%)表达为阳性,其表现主要为细胞浆和(或)细胞核棕黄色;②ALK蛋白阳性组的年龄低于ALK蛋白阴性组,两者统计学差异具有显著性(p<0.05);③ALK蛋白阳性组的预后好于ALK蛋白阴性组,两者统计学差异具有显著性(p<0.05)。结论:ALK蛋白的表达在ALCL中有很高的发生率,尤其是在低年龄组的患者,它可以作为ALCL的诊断、鉴别诊断和判断预后的一个独立重要指标。
基金supported by the National Natural Science Foundation of China(No.30901169)
文摘Objective To explore correlation of seven apoptosis-related proteins (Hsp9Oa, p53, MDM2, Bcl-2, Bax, Cytochrome C, and Cleaved caspase3) with clinical outcomes of ALK+ anaplastic large-cell lymphoma (ALCL). Methods Using immunohistochemistry and immunofluorescence double staining methods, the expressions of these seven apoptosis-associated proteins were studied to clarify their relationship with clinical outcomes of 36 ALK+ and 25 ALK- systemic ALCL patients enrolled between 1996 and 2006. The relationship of these apoptosis-regulating proteins with NPM-ALK status was also evaluated with the tyrosine inhibitor herbimycin A (HA) in vitro by immunocytochemistry, Western blotting and flow cytometric assays. Results The presence of Hsp90a-, MDM2-, Bax-, Cytochrome C, and Cleaved caspase3-positive tumor cells was found significantly different in ALK+ and ALK- ALCLs , which was correlated with highly favorable clinical outcome. The Bcl-2- and p53-positive tumor cells were found in groups of patients with unfavorable prognosis. Inhibition of NPM-ALK by HA could reactivate the p53 protein and subsequent apoptosis-related proteins and therefore induced apoptosis in ALK+ ALCL cells. Conclusion Our results suggest that these seven proteins might be involved in apoptosis regulation and associated with clinical outcome of ALK+ systemic ALCLs. We also reveal a dynamic chain relation that NPM-ALK regulates p53 expression and subsequent apoptosis cascade in ALK+ ALCLs.