宫颈癌中Ezrin和CD44-V6的表达及其相关性

目的 探讨Ezrin和CD44-V6在官颈癌中的表达及相关性.方法 采用免疫组化SP法检测了30例宫颈癌(A组)、20例宫颈上皮内瘤变(CIN)Ⅲ(B组)、10例正常宫颈组织中(C组)Ezrin和CD14-V6的表达,将两者分别与患者的临床病理参数进行统计学分析并评估两者的相关性.结果 Ezrin和CD44-V6阳性表达率:A组＞B组＞C组(P＜O.01).宫颈癌中Ezrom和CD44-V6表达呈正相关(P＜O.05).结论 Ezrin和CD44-V6在宫颈癌中的高表达与宫颈癌的侵袭性行为有关,可作为判断早期宫颈癌预后的指标.     

TSLC1和CD105在宫颈癌中的表达及其意义

目的 探讨TSLC1和CD105标记微血管密度计数(MVD)在宫颈癌中的表达及两者与临床病理特征的关系.方法 收集18例正常宫颈、18例宫颈上皮内瘤样变、45例宫颈癌组织标本,应用免疫组织化学法检测TSLC1和CD105标记MVD表达情况.结果 在正常宫颈、宫颈上皮内瘤样变、宫颈癌组织中,TSLC1的阳性表达率呈逐渐下降趋势(P＜0.01),TSLC1在宫颈癌组织中的表达与宫颈癌组织学分化程度、FIGO分期、淋巴结转移有关(P＜0.05).在正常宫颈、宫颈上皮内瘤样病变、宫颈癌组织中,CD105标记MVD表达强度呈逐渐上升趋势(P＜0.01),CD105标记MVD在宫颈癌组织中的表达强度与宫颈癌FIGO分期、淋巴结转移有关(P＜0.05).结论 宫颈癌组织中TSLC1呈低表达、而CD105呈高表达,提示TSLC1和CD105在宫颈癌的发生和发展中有重要意义,TSLC1和CD105表达水平的检测可用于辅助宫颈癌的诊断和病情评估.     

非小细胞肺癌组织中CD1α、CD83阳性树突状细胞浸润的临床意义

目的 探讨CD1α、CD83阳性树突状细胞在肺癌组织中的浸润情况及其临床意义.方法 采用流式细胞术检测49例非小细胞肺癌组织,对应的49例癌旁组织,10例炎性假瘤中树突状细胞表面分子CD1α和CD83的表达,分析CD1α和CD83表达水平与肺癌临床分期、病理类型、组织学分级和淋巴结转移的相关性.结果 (1)树突状细胞CD1α的表达率在肺癌组织、癌旁组织及炎性假瘤中无显著性差异(P＞0.05);(2)肺癌组织中CD83阳性树突状细胞的比例明显低于癌旁组织及炎性假瘤(P＜0.05);(3)肺癌组织中树突状细胞CD83的表达率在不同临床分期、病理类型和组织学分级中无显著性差异(P＞0.05),但与肺癌的局部淋巴结转移有关(P＜0.05).结论 (1)肺癌组织中CD83阳性树突状细胞较癌旁组织及炎性组织中减少;(2)肺癌组织中CD83阳性树突状细胞减少与肿瘤淋巴转移密切相关.     

宫颈癌中缺氧诱导因子-1α和MVD-CD105的表达及临床意义

目的:探讨宫颈癌中缺氧诱导因子-1α和微血管密度(MVD -CD105)的表达及临床意义.方法:应用免疫组化方法测定39例宫颈癌患者及对照组HIF-1α的表达情况及测定MVD -CD105值.结果:HIF-1α在正常宫颈组织、CIN及宫颈癌组织各组的表达差异有显著性意义(P＜0.05).HIF-1α表达与宫颈癌临床分期和淋巴结转移密切相关,并有统计学意义(P<0.05).CD105标记的MVD值与淋巴结转移密切相关(P＜0.05).与临床分期密切相关(P＜0.01) .HIF-α阳性组MVD值明显高于阴性组表达值,两者呈正相关(r＜0.712,P＜0.05).结论:HIF-1α在宫颈癌组织表达明显高于对照组,与宫颈癌临床病理分期和淋巴结转移密切相关,说明HIF-1α参与了宫颈癌的发生、浸润和转移.MVD-CD105与宫颈癌的临床分期、淋巴结转移及发展程度相关,说明血管生成在宫颈癌的浸润和转移中起了重要作用.HIF-1α阳性组的MVD明显高于阴性组,二者密切相关,说明宫颈癌中HIF-1α的表达与肿瘤血管生成密切相关,在宫颈癌发展过程中起重要作用.     

胃癌患者外周血CD44 CD54表达及临床意义

目的探讨胃癌患者外周血细胞CD44、CD54的表达及临床意义。方法采用流式细胞术对40例胃癌患者及13例良性病变组、20例正常对照组外周血细胞CD44、CD54的表达水平进行检测,结果胃癌患者外周血细胞的CD44、CD54的表达水平均显著高于晟性病变组及正常对照组,P〈0．05;且胃癌患者外周血细胞中CD44和CD54的表达水平与淋巴结转移和临床分期相关;良性病变组与正常对照组的比较无显著性意义。结论CD44及CD54在外周血的表达与肿瘤转移密切相关,检测胃癌患者外周血中的CD44及CD54的表达可为肿瘤的发生、发展及预后判断提供依据。     

CD4+CD25+Foxp3+调节性T细胞在急性白血病患者外周血的表达

目的 初步探讨CD4 CD25 调节性T细胞在急性白血病(AL)患者外周血中的表达及其临床意义.方法 流式细胞术分别检测43例AL初诊(A组)、经化疗完全缓解(CR,B组)25例及20例健康志愿者(C组)外周血中CD4 CD25 T细胞所占比例;荧光定量RT-PCR分析各组外周血中叉状头/翅膀状螺旋转录因子(Foxp3)mRNA的表达水平,并逐层分析比较.结果 B组CD4 CD25 T细胞比例及Foxp3含量均明显高于A、C组(P＜0.01).A组Foxp3表达明显高于C组(P＜0.01).在AL各亚型之间CD4 CD25 T细胞及Foxp3表达均无显著差异.结论 CD4 CD25 调节性T细胞在初治AL或CR患者外周血中比例增加,可能是AL免疫抑制的一个重要原因.     

CD8和CD10在宫颈癌肿瘤浸润淋巴细胞中的表达及意义

目的研究宫颈癌肿瘤浸润淋巴细胞(tumor-infiltrating lymphocyte,TIL)CD8、CD10的表达,分析其与宫颈癌临床病理特征及预后的关系,探讨影响宫颈癌患者预后的因素。方法收集所选患者完整的临床和病理资料,采用免疫组织化学染色法检测宫颈癌TIL CD8、CD10的表达情况。结果 (1)CD8在宫颈癌TIL中的表达随患者年龄的增加、临床病理分期的进展和淋巴结转移的出现而减弱(P<0.05);(2)CD10在宫颈癌TIL中的表达水平较低,且其表达与宫颈癌的临床病理特征及预后无明显相关性(P>0.05);(3)影响宫颈癌预后的因素为年龄、临床分期、CD8表达水平、有无淋巴结转移等,而与肿瘤的组织学类型无关;(4)CD8可作为宫颈癌预后的独立影响因素,且与CD10表达水平的改变不具有一致性(P>0.05)。结论宫颈癌TIL CD8的表达与患者手术时的年龄、临床病理分期及有无淋巴结转移相关,可作为宫颈癌预后的独立影响因素,但与CD10的表达无明显相关性。     

CD147和MMP-2在宫颈癌组织中的表达及意义

目的:探讨宫颈癌中细胞外基质金属蛋白酶诱导因子(CD)147和基质金属蛋白酶-2(MMP-2)的表达及意义。方法:采用免疫组化SP法检测20例正常宫颈组织、21例宫颈上皮内瘤样变(CIN)组织(CINⅠ、CINⅡ、CINⅢ各7例)和59例宫颈癌组织中CD147和MMP-2的表达情况并加以分析。结果:CD147和MMP-2在肿瘤组织和正常组织中均有表达。宫颈癌组织中CD147和MMP-2表达明显高于正常宫颈组与CIN组(P<0.05)。宫颈癌中,有无淋巴结转移宫颈癌患者的CD147表达差异有统计学意义(P<0.05),不同年龄、FIGO分期、大体类型、分化程度、组织类型宫颈癌患者的CD147表达比较差异均无统计学意义(P>0.05);不同FIGO分期及淋巴结转移宫颈癌患者MMP-2表达比较差异有统计学意义(均P<0.05);不同年龄、大体类型、分化程度、组织类型宫颈癌患者MMP-2表达比较差异均无统计学意义(P>0.05)。宫颈癌组织中CD147与MMP-2表达之间呈正相关(P<0.05)。结论:CD147和MMP-2在宫颈癌的浸润和转移方面起重要作用,联合检测CD147和MMP-2成为宫颈癌诊断的标志物,是评...     

G蛋白偶联受体30在宫颈癌组织中的表达及临床意义

目的 分析G蛋白偶联受体30(GPR30)在宫颈癌组织中表达的临床意义.方法 选取2012年9月-2015年6月收集的68例宫颈病变组织标本,其中宫颈癌组38例,宫颈上皮内瘤样病变(CIN)组30例,另选择来院行妇科检查的20例正常宫颈组织作为对照组,观察3组宫颈组织CPR30的表达水平,并分析其与宫颈癌临床病理参数的关系.结果 宫颈癌组和CIN组宫颈组织GRP30表达阳性率和GRP30 mRNA相对表达量均高于对照组,且宫颈癌组高于CIN组(P＜0.05);不同分化程度、不同临床分期宫颈癌组织GPR30阳性率比较差异有统计学意义(P＜0.05).结论 GPR30参与宫颈癌的发生及进展,且与肿瘤分化程度、临床分期密切相关.     

食管鳞癌组织中CD44v6与E-钙黏蛋白表达及其临床意义

目的 探讨食管鳞癌组织CD44v6与E-钙黏蛋白(E-cad)表达与其临床病理特征的关系.方法 采用免疫组化法检测48例食管鳞癌(A组)、23例糜烂性食管炎(B组)和24例正常食管黏膜组织(C组)CD44v6和E-cad的表达,分析其表达与食管鳞癌临床病理特征的关系.结果 A组CD44v6表达明显高于B、C组,而E-cad表达明显低于B、C组(P＜0.05).CD44v6和E-cad的表达与食管鳞癌浸润深度和淋巴结转移密切相关(P＜0.05).食管鳞癌组织中CD44v6和E-cad表达水平呈负相关(r=-0.580,P＜0.05).结论 联合检测病变组织中CD44v6与E-cad的表达有望成为食管鳞癌筛查及预后判断的辅助指标.     

Integrin CD11a/CD18, CD11b/CD18 and CD69 expression in patients after renal transplantation

Chronic renal failure (CRF) is a complex clinical entity caused by progressive destruction of functional renal parenchyma in the course of various pathological processes resulting in complete failure of renal function and subsequent metabolic, acid base and electrolyte as well as immune disorders. Renal transplantation (RT) is one of the renal replacement therapy options in the terminal stage of chronic renal failure. The replacement of the failing organ with one from a healthy donor may be complicated with immune host response. This study was designed to investigate the changes in serum concentration of integrins CD11a/CD18, CD11b/CD18, CD69 on the surface of human polymorphonuclear leukocytes (PMNL) after the RT within two six-month periods. The study included 25 RT patients (mean 5.4±2.7 yrs after the transplantation, 10 females and 15 males) treated with immune suppressive therapy including cyclosporine A, azathioprine and prednisolone. The expression was assessed with monoclonal antibodies by means of flow cytometry. Also, the expression of CD69 was determined before and after phytohemaglutinine (PHA) stimulation. There was no significant alternation in serum concentration of CD11a/CD18, CD11b/CD18 and CD69 at baseline, six months and twelve months later. The expression of integrins was not altered in renal transplantation patients in the current study setting.     

造血移植物中CD3~+CD8~(low)和CD3~+CD4~-CD8~(low)细胞亚群的检测及分析

目的检测造血移植物(正常人骨髓、脐血及动员后外周血)中CD3+CD8low和CD3+CD4-CD8low细胞亚群,探讨其促进造血干/祖细胞植入异基因骨髓的功能,以期拓宽脐血移植的应用范围。方法直接三色免疫荧光标记流式细胞术检测。结果CD3+CD8low和CD3+CD4-CD8low细胞亚群占CD3+细胞亚群的比例在骨髓中最高,为(8.61±1.40)%,动员后外周血次之,为(5.11±0.76)%,脐血最低,为(3.31±0.88)%(P<0.01);"初始"T(CD45RA+CD45RO-)细胞亚群占CD8low细胞亚群的比例为脐血(94.26±2.46),骨髓(58.68±7.57),动员后外周血(73.21±3.60),"初始"T占CD8high细胞亚群的比例为脐血(82.63±3.16),骨髓(38.69±3.24),动员后外周血(51.58±4.23),各移植物中"初始"T细胞亚群占CD8low细胞亚群的比例均高于其占CD8high细胞亚群的比例(P<0.01),CD8low细胞亚群中"初始"T与"记忆"T(CD45RA-CD45RO+)细胞亚群的比例均高于二者在CD8high细胞亚群的比例。结论脐血CD8low和CD8lowCD4-细胞占CD3+细胞的比例明显低于骨髓,可能是脐血移植植入延迟的原因之一;"初始T与"记忆"T细胞亚群的比例增高,可能与CD3+CD8low细胞亚群维持和诱导免疫耐受,不引起移植物抗宿主病有关。     

Conformationally constrained peptides from CD2 to modulate protein-protein interactions between CD2 and CD58

Cell adhesion molecule CD2 and its ligand CD58 provide good examples of protein-protein interactions in cells that participate in the immune response. To modulate the cell adhesion interaction, peptides were designed from the discontinuous epitopes of the β-strand region of CD2 protein. The two strands were linked by a peptide bond. β-Strands in the peptides were nucleated by inserting a β-sheet-inducing (D)-Pro-Pro sequence or a dibenzofuran (DBF) turn mimetic with key amino acid sequences from CD2 protein that binds to CD58. The solution structures of the peptides (5-10) were studied by NMR and molecular dynamics simulations. The ability of these peptides to inhibit cell adhesion interaction was studied by E-rosetting and lymphocyte epithelial assays. Peptides 6 and 7 inhibit the cell adhesion activity with an IC(50) of 7 and 11 nM, respectively, in lymphocyte epithelial adhesion assay. NMR and molecular modeling results indicated that peptides 6 and 7 exhibited β-hairpin structure in solution.     

Induction of Death Receptor CD95 and Co-stimulatory Molecules CD80 and CD86 by Meningococcal Capsular Polysaccharide-Loaded Vaccine Nanoparticles

Neisseria meningitidis is a leading cause of bacterial meningitis and sepsis, and its capsular polysaccharides (CPS) are a major virulence factor in meningococcal infections and form the basis for serogroup designation and protective vaccines. We formulated a novel nanovaccine containing meningococcal CPS as an antigen encapsulated in albumin-based nanoparticles (NPs) that does not require chemical conjugation to a protein carrier. These nanoparticles are taken up by antigen-presenting cells and act as antigen depot by slowly releasing the antigen. In this study, we determined the ability of CPS-loaded vaccine nanoparticles to induce co-stimulatory molecules, namely CD80, CD86, and CD95 that impact effective antigen presentation. Co-stimulatory molecule gene induction and surface expression on macrophages and dendritic cells pulsed with meningococcal CPS-loaded nanoparticles were investigated using gene array and flow cytometry methods. Meningococcal CPS-loaded NP significantly induced the surface protein expression of CD80 and CD86, markers of dendritic cell maturation, in human THP-1 macrophages and in murine dendritic cells DC2.4 in a dose-dependent manner. The massive upregulation was also observed at the gene expression. However, high dose of CPS-loaded NP, but not empty NP, induced the expression of death receptor CD95 (Fas) leading to reduced TNF-α release and reduction in cell viability. The data suggest that high expression of CD95 may lead to death of antigen-presenting cells and consequently suboptimal immune responses to vaccine. The CPS-loaded NP induces the expression of co-stimulatory molecules and acts as antigen depot and can spare antigen dose, highly desirable criteria for vaccine formulations.KEY WORDS: CD80, CD86, CD95, co-stimulatory, nanoparticulate vaccine     

CD21和CD40L的表达与血清IgE相关性研究

目的研究哮喘的发病机制,探讨哮喘儿童白细胞表面分化抗原21(CD21)及CD40L的表达与血清IgE的相关性。方法利用流式细胞分析技术检测儿童哮喘发作期及缓解期外周血CD21 、CD40L 的百分率,同时用免疫化学发光法检测血清IgE的水平,并进行相关性分析。结果哮喘发作组CD21 、CD40L 的百分率明显高于哮喘缓解组、肺炎组和正常组(P均<0.01);哮喘发作组IgE明显高于哮喘缓解组、肺炎组和正常组(P均<0.01);哮喘发作组CD21 、CD40L 与IgE呈正相关。结论CD21 、CD40L 的表达与和血清IgE在哮喘的发病机制中发挥重要作用。     

Regulation of B-cell activation by complement receptors CD21 and CD35

The role of complement in the development and regulation of antibody responses under both healthy and pathological conditions is known for long. Unraveling the elements involved and the molecular mechanisms underlying the events however is still in progress. This review focuses on the role of complement receptors CR1 (CD35) and CR2 (CD21) expressed on B lymphocytes, which interact with ligands generated upon activation of component C3, the major protein of the complement cascade. The binding and possible effects of immune complexes comprising antigen, antibody and complement on B-cell activation are discussed. Results of clinical studies of autoimmune diseases such as systemic lupus erythematosus and rheumatoid arthritis and conclusions drawn from animal models used to investigate various aspects of human diseases are also debated. We discuss similarities regarding the overall structure and certain functions of complement and complement receptors in mice and men however, call the attention to major differences regarding tissue distribution and their role in B-cell functions.     

CD4+CD25+调节性T细胞与儿科疾病

古希腊特尔斐阿波罗神庙上镌刻着一句铭言:Gnothi Seauton(英文为know thyself)即"认识自己"."认识自己"已成为免疫学家广为认可的定律:机体免疫系统首先必须识别自身的抗原,产生无反应性,再针对外来抗原产生免疫应答,即"识别自身,排斥异己".