脑胶质瘤能活几年 FK506结合蛋白51在脑胶质瘤安排中的表达及其临床意义
郝瑜+刘晓雯+董竟+崔彬+焦玉莲+周隆善+种宗雷+赵跃然
[摘要] 意图 评论FK506结合蛋白51(FKBP51)在脑胶质细胞瘤安排中的表达及其临床含义。 办法 选取本院2013年1月~2015年1月的223例脑胶质瘤患者作为研讨目标,选取同期来自于颅脑损害手术患者的23例正常脑安排进行对照研讨。选用免疫安排化学法检测FKBP51的表达水平,剖析其表达水平与脑胶质瘤病理安排类型和病理分级的联系。 成果 脑胶质瘤的FKBP51阳性率显着高于正常脑安排,差异有统计学含义(P<0.05)。不同病理类型脑胶质瘤安排的FKBP51阳性率比较,差异有统计学含义(P<0.05)。恶性的胶质母细胞瘤FKBP51的表达水平显着高于良性的星形细胞瘤,差异有统计学含义(P<0.05)。FKBP51的表达水平与脑胶质瘤分级呈正相关(r=0.30,P<0.05)。 定论 FKBP51表达与脑胶质瘤的病理类型和临床病理分级具有相关性,有或许作为脑胶质瘤标志物用于临床病理特征剖析和预后判别。
[关键词] FK506结合蛋白51;表达;脑胶质瘤;病理分级
[中图分类号] R739.41 [文献标识码] A [文章编号] 1674-4721(2016)03(b)-0012-03
[Abstract] Objective To explore the expression and clinical significance of FK506 binding protein 51 (FKBP51) in brain glioma tissue. Methods 223 cases of brain glioma from January 2013 to January 2015 in our hospital were selected as the research group,23 cases of normal brain tissues from patients with brain injury was selected as the control group.The expression level of FKBP51 was tested by using immunohistochemical method,and the relationship between its expression level and gliomas histopathologic types and pathology grade was analyzed. Results The positive rate of FKBP51 in glioma tissue was higher than that in normal brain tissue,with significant difference (P<0.05).There were significant difference in the positive rate of FKBP51 in different pathological types of brain glioma tissues (P<0.05).The expression level of FKBP51 in malignant glioblastomas was higher than that in benign astrocytoma,with significant difference (P<0.05).The expression level of FKBP51 had positive relationship with pathology grade (r=0.30,P<0.05). Conclusion The expression of FKBP51 is related to histopathologic types and pathology grade of glioma,it may be as glioma markers for analysis clinicopathologic feature and judgement prognosis.
[Key words] FK506 binding protein 51;Expression;Brain glioma;Pathology grade脑胶质瘤是发病率、病死率最高的中枢神经体系原发性肿瘤,恶性程度高,生存率低。不同病理安排类型和分级与脑胶质瘤的预后密切相关,如星形细胞瘤的生存期为5~10年,间变性星形细胞瘤的生存期为2~3年,胶质母细胞瘤的生存期仅为12~15个月,但相同病理类型的脑胶质瘤预后也有较大差异,现在尚缺少判别其预后的标志物。FK506结合蛋白51(FK506 binding protein 51,FKBP51)归于亲免素宗族,广泛表达于多种肿瘤安排。作为致癌或抑癌基因,其参加肿瘤发作开展和化疗灵敏性的调理[1]。现在,有关FKBP51表达与脑胶质瘤病理分级联系的研讨较少。本研讨选用免疫安排化学法检测FKBP51在脑胶质瘤安排中的表达,评论其表达水平与脑胶质瘤病理安排分型和分级的联系,旨在为临床确诊和医治供给理论依据。
1 材料与办法
1.1 一般材料
选取本院2013年1月~2015年1月的223例脑胶质瘤患者作为研讨目标,男性117例,女人106例;年纪5~75岁,均匀(44.0±6.9)岁;病理安排分型:胶质母细胞瘤62例,星形细胞瘤134例,少突星形/胶质细胞瘤16例,室管膜瘤/间变室管膜瘤11例;病理安排分级:Ⅰ/Ⅱ级133例,Ⅲ/Ⅳ级90例。选取同期来自于颅脑损害手术患者的23例正常脑安排进行对照研讨,男性11例,女人12例;年纪8~72岁,均匀(45.0±7.5)岁。
1.2 材料
脑胶质瘤及正常脑安排组合芯片由西安艾丽娜生物科技有限公司供给;抗体人FKBP51抗体[FKBP51(D-4):sc-27154]购自Santa公司;即用型免疫组化EliVisionTM plus试剂盒(KIT-9902)和DAB显色体系(液体DAB酶底物显色试剂盒,DAB-0031/1031)均购自福州迈新生物技能有限公司。
1.3 试验办法
选用免疫组化(IHC)的EliVisionTM法检测FKBP51抗体在脑胶质瘤及正常脑安排组合芯片中的表达状况。试验中对安排芯片顺次行惯例脱蜡水化、抗原修正、3%H2O2-甲醇关闭内源性过氧化物酶、滴加FKBP51(1∶25)、DAB显色、苏木素复染、惯例脱水封片等处理。别的,试验设检测片和阴性对照,阴性对相片与检测片操作办法相同,一抗改用同种的IgG,其他条件均相同。
1.4 FKBP51阳性的断定规范
依据芯片染色强度进行FKBP51阳性的断定:不上色为阴性(-),着浅棕色为弱阳性(+),着棕色为阳性(++),着棕褐色为强阳性(+++)。
1.5 统计学处理
选用SPSS 22.0统计学软件对数据进行剖析,计量材料以x±s表明,选用t查验,计数材料选用χ2查验或Ridit剖析,相关性选用Spearman相关剖析,以P<0.05为差异有统计学含义。
2成果
2.1 两组FKBP51阳性率的比较
脑胶质瘤的FKBP51阳性率显着高于正常脑安排,差异有统计学含义(P=0.045)(表1、图1)。
2.2 不同病理类型脑胶质瘤安排FKBP51阳性率的比较
不同病理类型脑胶质瘤安排FKBP51的阳性率比较,差异有统计学含义(χ2=21.84,P<0.05)。恶性的胶质母细胞瘤FKBP51的表达水平显着高于良性的星形细胞瘤,差异有统计学含义(P<0.05)(表2)。
与星形细胞瘤组比较,*P<0.05
2.3 FKBP51表达水平与脑胶质瘤病理分级的相关性剖析
Spearman等级相关剖析显现,FKBP51的表达水平与脑胶质瘤分级成正相关(r=0.30,P<0.05)(表3)。
3 评论
脑胶质瘤是最常见的成人颅内肿瘤,恶性程度高,占原发性颅内肿瘤的50%~60%,多见于30~40岁的成人[2]。研讨显现[3],近年来其发病率呈上升趋势。虽然关于本病的医治技能在不断进步,但由于其浸润性成长[4]以及对放化疗不灵敏等恶性生物学特征,脑胶质瘤的生存率和预后仍未得到显着改进[5]。虽然发现多种分子如p53、表皮成长因子受体(epidermal growth factor receptor,EGFR)和Ki-67等参加脑胶质瘤的发作、开展[6-7],但其发病机制尚不清楚,尤其是缺少与脑胶质瘤恶性生物学行为相关的特异性标志物[8]。
FKBP51归于大分子亲免素宗族,表达于多种安排细胞和肿瘤[9]。FKBP51作为分子伴侣参加类固醇接受体复合物的构成,调理安排细胞对类固醇激素的应对;调理丝/苏氨酸蛋白激酶(AKT)和核因子(NF)-κB信号通路的活性,参加细胞增殖和凋亡的调控;促进微管相关蛋白去磷酸化,添加微管体系的安稳性[10]。新近研讨显现[11],FKBP51或许参加肿瘤细胞发作、开展和放化疗灵敏性的调控。FKBP51在前列腺癌、淋巴瘤、头颈部肿瘤、黑素瘤中的表达水平高于相应的正常安排,而在胰腺癌、结肠癌、睾丸癌中的表达则显着下调。上调FKBP51表达能按捺胰腺癌细胞成长,添加化疗灵敏性[12]。估测在不同安排类型的肿瘤中,高表达或低表达的FKBP51可通过不同的信号通路促进或按捺肿瘤的成长,其有或许作为猜测肿瘤化疗灵敏性的预后生物标志物和肿瘤医治的新靶点[13]。本研讨成果显现,FKBP51在脑胶质瘤细胞中的表达水平显着高于正常脑安排(P=0.045),且恶性的胶质母细胞瘤表达水平显着高于良性的星形细胞瘤(P=0.002),提示FKBP51或许参加脑胶质瘤的发作、开展,并与其恶性生物学行为相关。病理分级是反映脑胶质瘤分解程度和预后的重要目标[14-16],本研讨成果显现,FKBP51表达水平与脑胶质瘤的病理分级呈正相关,即FKBP51表达水平越高,脑胶质瘤的分级越高,进一步证明了FKBP51或许参加脑胶质瘤增殖和侵袭等恶性生物学行为的调控。
综上所述,FKBP51在脑胶质瘤细胞的表达上调,且与肿瘤临床病理分级相关,提示有或许作为其预后判别的生物学标志物和医治靶点,但FKBP51作为分子伴侣调控机体类固醇激素应对、细胞增殖凋亡等多种信号通路活化和微管体系安稳,参加机体多种生理病理进程及脑胶质瘤增殖凋亡和侵袭搬运的病理机制需要进一步评论。
[参考文献]
[1] Baughman G,Wiederrecht GJ,Campbell NF,et al.FKBP51,a novel T-cell-specific immunophilin capable of calcineurin inhibition[J].Mol Cell Biol,1995,15(8):4395-4402.
[2] Guzman-De-Villoria JA,Mateos-Perez JM,Fernandez-Garcia P,et al.Added value of advanced over conventional magnetic resonance imaging in grading gliomas and other primary brain tumors[J].Cancer Imaging,2014,(14):35.
[3] Ho VK,Reijneveld JC,Enting RH,et al.Changing incidence and improved survival of gliomas[J].Eur J Cancer,2014, 50(13):2309-2318.
[4] Babu R,Kranz PG,Karikari IO,et al.Clinical characteristics and treatment of malignant brainstem gliomas in elderly patients[J].J Clini Neurosci,2013,20(10):1382-1386.
[5] Babu R,Kranz PG,Agarwal V,et al.Malignant brainstem gliomas in adults:clinicopathological characteristics and prognostic factors[J].J Neurooncol,2014,119(1):177-185.
[6] Levidou G,El-Habr E,Saetta AA,et al.P53 immunoexpression as a prognostic marker for human astrocytomas:a meta-analysis and review of the literature[J].J Neurooncol,2010,100(3):363-371.
[7] Chen W,He D,Li Z,et al.Overexpression of vascular endothelial growth factor indicates poor outcomes of glioma:a systematic review and meta-analysis[J].Int J Clin Exp Med,2015,8(6):8709-8719.
[8] D′Elia A,Tropeano MP,Maiola V,et al.The etiology of low-grade gliomas:pathological and clinical considerations about radiation-induced low-grade gliomas[J].Neurol Sci,2015,36(7):1091-1095.
[9] Cioffi DL,Hubler TR,Scammell JG.Organization and function of the FKBP52 and FKBP51 genes[J].Curr Opin Pharmacol,2011,11(4):308-313.
[10] Staibano S,Mascolo M,Ilardi G,et al.Immunohistochemical analysis of FKBP51 in human cancers[J].Curr Opin Pharmacol,2011,11(4):338-347.
[11] Kim YS,Kim YJ,Lee JM,et al.Functional changes in myeloid-derived suppressor cells (MDSCs) during tumor growth:FKBP51 contributes to the regulation of the immunosuppressive function of MDSCs[J].J Immunol,2012, 188(9):4226-4234.
[12] Pei H,Li L,Fridley BL,et al.FKBP51 affects cancer cell response to chemotherapy by negatively regulating Akt[J].Cancer Cell,2009,16(3):259-266.
[13] Romano S,Sorrentino A,Di Pace AL,et al.The emerging role of large immunophilin FK506 binding protein 51 in cancer[J].Curr Med Chem,2011,18(35):5424-5429.
[14] Eisenstat DD,Pollack IF,Demers A,et al.Impact of tumor location and pathological discordance on survival of children with midline high-grade gliomas treated on Children′s Cancer Group high-grade glioma study CCG-945[J].J Neurooncol,2015,121(3):573-581.
[15] Haining Z,Kawai N,Miyake K,et al.Relation of LAT1/4F2hc expression with pathological grade,proliferation and angiogenesis in human gliomas[J].BMC Clin Pathol,2012,(12):4.
[16] Arai H,Ikota H,Sugawara K,et al.Nestin expression in brain tumors:its utility for pathological diagnosis and correlation with the prognosis of high-grade gliomas[J].Brain Tumor Pathol,2012,29(3):160-167.