NDV联合负载胃癌细胞抗原DC-CIK对胃癌细胞的杀伤效果及机制

目的探讨新城疫病毒（NDV）联合负载胃癌细胞抗原（Ag）的树突状细胞（DC）及细胞因子诱导的杀伤细胞（CIK）对胃癌细胞的杀伤效果及机制。方法用人外周血单个核细胞诱导培养DC及CIK,体外培养人胃癌细胞SGC-7901,反复冻融法制备胃癌细胞Ag悬液冲击致敏DC,CIK与负载胃癌细胞Ag的DC共培养。建立胃癌裸鼠模型,将其随机分为四组各6只。PBS组瘤内注射PBS100μl／只;NDV组瘤内注射NDV0．25ml／只;Ag-DC-CIK组瘤内注射负载抗原的DC诱导的CIK细胞0．2ml／只;NDV＋Ag-DC-CIK组先瘤内注射NDV0．25ml／只,1d后再注射负载抗原的DC诱导的CIK细胞0．2ml／只;各组均隔日注射1次,共3次。14d后测量肿瘤体积,计算抑瘤率。观察肿瘤坏死情况并评分。结果NDV＋AS—DC-CIK组肿瘤平均体积小于NDV组和Ag—DC-CIK组,抑瘤率、肿瘤坏死面积评分高于NDV组和Ag-DC—CIK组;P均〈0．05。结论NDV和负载胃癌细胞Ag的DC-CIK能协同杀伤胃癌细胞,杀伤效果强于二者单用效果;其机制为NDV可增加胃癌细胞的抗原性,为CIK细胞提供更多靶点。     

树突状细胞增强细胞因子诱导的杀伤细胞抗神经胶质瘤细胞作用及机制研究

目的探讨细胞因子诱导的杀伤细胞（CIK）与树突状细胞（DC）共培养后DC-CIK混合细胞抗神经胶质瘤细胞的免疫作用。方法分离健康人外周血单个核细胞,分别于体外诱导DC和CIK,然后共培养成DC-CIK细胞。实验分DC组、DC-CIK组、DC-T组和CIK组。Elisa试剂盒检测各组培养上清中IL-12和IFN．1的含量,流式细胞仪检测细胞表型,CCK一8法体外检测对神经胶质瘤细胞的杀伤活性。结果DC-CIK组培养上清中IL-12和IFN-1的含量分别为（110．24±2．22）mg／L和INF·Y／（913．46±20．64）mg／L,明显高于其它三组（P〈0．05）。DC—CIK组cDi细胞（61．34-1．31）％、CD3／CD56细胞（29．4±1．03）％也明显增加（P〈0．05）。对神经胶质瘤细胞的杀伤活性,DC—CIK组为（54．67±2．62）％,与DC组（19．44±1．07）％、DC—T组（21．27±1．85）％和CIK组（36．52±2．06）％比较,差异有统计学意义（P〈0．05）。结论DC—CIK细胞能诱导明显的神经胶质瘤细胞杀伤活性,为颅内肿瘤的免疫治疗提供了依据。     

脐血DC-CIK共培养体外抗肿瘤效应及趋化性的实验研究

目的探讨细胞因子诱导的杀伤细胞（CIK）与同源树突状细胞（DC）共培养后对人白血病K562细胞、人淋巴瘤raji细胞、人乳腺癌MCF-7细胞的杀伤作用及CIK细胞的趋化性。方法采集健康产妇分娩的正常足月胎儿脐血,分离单个核细胞,诱导培养CIK、DC细胞。将成熟DC和CIK混合培养3d,用MTT法检测CIK、DC-CIK对K562、raji、MCF-7细胞的杀伤活性;趋化试验检测CIK细胞的趋化性。结果 CIK、DC-CIK细胞对K562、raji、MCF-7细胞均具有较强的杀伤作用,DC-CIK杀伤活性明显高于CIK。趋化试验显示,IL-8、MCP-1作用后穿过微孔滤膜的细胞数明显高于阴性对照。结论 DC-CIK共培养可明显提高CIK对K562、raji、MCF-7细胞的杀伤作用,IL-8、MCP-1对CIK细胞存在趋化性。     

树突状细胞联合细胞因子诱导的杀伤细胞对胃癌细胞杀伤作用

目的探讨树突状细胞联合细胞因子诱导的杀伤细胞对胃癌细胞的杀伤作用。方法采用胃癌患者自身血液中单个核细胞(peripheral blood mononuclear cells,PBMC),经体外诱导分别扩增出DC和CIK细胞,二者共同培养后,利用MTT法检测DC细胞联合CIK细胞体外杀伤人胃癌细胞株(MNK-45、MNK-28、SG-7901)的活性。结果DC与CIK细胞共培养后得到的细胞群高表达CD3 CD56 ,平均值达到(56.74±7.63)%。通过彼此相互作用诱导出的细胞群体对胃癌细胞株MNK-45、MNK-28、SG-7901有杀伤作用,且杀伤活性随着效靶比的增加而增强。结论DC与CIK细胞共培养后有很强的增殖能力,对胃癌细胞具有杀伤活性,且其杀伤作用与胃癌细胞类型无相关性。     

树突状细胞与细胞因子诱导的杀伤细胞共培养对白血病耐药细胞杀伤作用的实验研究

目的探讨负载P-糖蛋白(P-gp)高表达的多药耐药(MDR)白血病K562/A02细胞冻融抗原的树突状细胞(DC)与同源细胞因子诱导的杀伤细胞(CIK)共培养对MDRK562/A02杀伤作用的影响。方法提取健康人骨髓单个核细胞,常规诱导出DC及CIK,将K562/A02细胞冻融物作为抗原冲击的DC,与CIK共培养作为实验组,抗原不冲击的DC与CIK共培养作为对照组,以CIK及DC单独培养分别作为空白对照组1和空白对照组2。光镜下观察细胞形态,流式细胞术分析细胞表型,MTT法检测杀伤活性。结果实验组、对照组细胞增殖活性均大于CIK组(P<0.05)。实验组对K562/A02、K562的杀伤活性在效靶比5∶1、10∶1、20∶1时分别为(42.90±0.67)%、(49.85±0.28)%、(63.36±0.46)%和(23.56±0.43)%、(26.11±0.34)%、(34.46±0.35)%,均高于对照组及空白对照组1(P<0.05);实验组对K562/A02的杀伤活性高于K562和MCF7(P<0.05)。结论DC与CIK共培养物是一种增殖活性和细胞毒活性高于CIK的免疫活性细胞,而经冻融抗原冲击的DC与CIK共培养能明显提高对MDRK562/A02的杀伤活性。     

体外培养的树突状细胞与细胞因子诱导的杀伤细胞相互作用的研究

目的 观察同源的树突状细胞（DC）与细胞因子诱导的杀伤（CIK）细胞于体外同一培养体系共同培养时的相互影响,为临床联合应用DC和CIK细胞进行肿瘤生物治疗提供依据.方法 用无血清培养基进行DC和CIK细胞的体外培养制作,共同培养1 w后,检测CIK细胞免疫表型、杀瘤活性的变化以及DC分泌IL-12的变化.结果 DC与CIK细胞的共培养会增加CIK细胞的CD3CD56双阳性细胞的比例和非特异性增强对K562细胞的杀伤活性;同时增强DC分泌IL-12的能力.结论 体外共培养DC与CIK细胞可相互增强抗肿瘤免疫活性.     

树突状细胞调节和细胞因子诱导的杀伤细胞的抗肿瘤机制及其在结直肠癌治疗中的应用前景

利用细胞因子诱导树突状细胞（dendritic cell，DC）和细胞因子诱导的杀伤细胞（cytokine induced killer，CIK细胞），以肿瘤抗原冲击DC，将经过抗原冲击的DC和CIK细胞按一定比例混合进行共培养，得到一种新的免疫效应细胞群，即DC调节和细胞因子诱导的杀伤细胞（DCIK细胞）。DCIK细胞具有识别和特异性杀伤恶性细胞的作用，打破了放化疗“敌我不分”的状况。DCIK细胞不但存活率高，增殖能力强．而且对肿瘤细胞具有特异性杀伤能力，为肿瘤免疫治疗开创了一条新的途径。     

脐带血DCs对CIK细胞杀伤活性的影响研究

目的：探讨相同来源脐带血DCs对CIK细胞杀伤活性的影响作用。方法：采用相同来源的脐带血单个核细胞分别制备树突状细胞，CIK细胞，用流式细胞术检测免疫表型，MTT法检测CIK和CIK＋DC对K562，HL－60两种肿瘤细胞株的杀伤活性。结果：脐带血DC高表达CD1a,HLA-DR,CD80,CD86等抗原，CIK细胞是以CD3^ T细胞为主的异质性细胞群体，随培养时间延长CD3^ CD56^ 细胞比例明显升高，DC不改变CIK的免疫表型，但能明显促进其对K562和HL－60的杀伤活性（P＜0．05），结论：适量DC能增强CIK的杀伤活性，为DC的免疫治疗提供了新的思路。     

肝癌干细胞抗原致敏的DC-CTL对肝癌的抑制作用

目的研究肝癌干细胞抗原致敏的树突细胞(DC)-细胞毒性T淋巴细胞(CTL)对裸鼠肝癌的抑瘤作用。方法肝细胞性肝癌患者手术后取肝癌组织,根据肝癌干细胞表面标志CD133,用磁珠分选法初步获得肝癌干细胞,反复冻融提取法获得肝癌干细胞抗原;采集同一患者外周血,加入细胞因子体外诱导、扩增抗原致敏的DC和细胞因子诱导的杀伤(CIK),从CIK中分选出CD3~+CD8~+T细胞;将肝癌干细胞抗原致敏的DC与CD3~+CD8~+T细胞共培养后,获得抗原致敏的DC-CTL细胞;制备裸鼠肝癌模型,动物实验观察抗原致敏的DC-CTL对裸鼠肝癌的抑瘤作用。结果肝癌干细胞抗原致敏的DC-CTL细胞和肝癌细胞抗原致敏的DC-CTL细胞对裸鼠肝癌均有极显著的抑制作用,两组间比较差异有统计学意义(P<0.05),肝癌干细胞抗原致敏组的抑瘤率明显增高。结论肝癌干细胞抗原致敏的DC-CTL对肝癌具有显著抑制作用。     

树突状细胞与同源细胞因子诱导的杀伤细胞共培养细胞在肿瘤免疫治疗中的作用

目的观察树突状细胞(DC)与同源细胞因子诱导的杀伤 (CIK)细胞共培养后,共培养细胞(DC-CIK细胞)的表型、体外增殖活性和细胞毒活性的变化,并探讨CIK细胞在肿瘤治疗中的作用.方法 (1)提取3名健康献血者的外周血单个核细胞(PBMC),常规诱导出DC与CIK细胞后,将其共培养,动态观察CIK细胞和DC-CIK细胞增殖活性和表型变化;并用四甲基偶氮唑蓝(MTT)法测定其体外细胞毒活性;(2)80只BALB/c裸鼠随机分为2组,分别在前肢腋下接种A549肺腺癌细胞和BEL-7404肝癌细胞.10 d后分别选择荷A549和BEL-7404瘤大小相似的裸鼠各30只,全部一次性腹腔注射化疗药物后,每组再随机分成3组.①单独化疗组;②CIK治疗组;③DC-CIK治疗组,每组10只. 单独化疗组注射化疗药物后不再进行任何处理,另2组分别于化疗后的第2、4、6、8、10天腹腔注射CIK细胞和DC-CIK细胞进行免疫治疗.结果 (1)经DC作用后的CIK细胞CD +3CD +56双阳性细胞和CD +8细胞的数量明显升高;(2)DC-CIK细胞的增殖速度明显快于同源CIK细胞,DC-CIK细胞的细胞毒活性远高于CIK细胞;(3)在肿瘤的治疗中,CIK细胞可提高化疗的效果.化疗后25 d,CIK治疗组和DC-CIK治疗组肿瘤受抑制的程度均明显大于单独化疗组,DC-CIK组大于CIK治疗组(P<0.05).结论 DC与CIK细胞共培养细胞是一种强于CIK细胞的免疫活性细胞,在肿瘤治疗中具有更广阔的应用前景.     

Enhanced cytotoxicity of IL-24 gene-modified dendritic cells co-cultured with cytokine-induced killer cells to hepatocellular carcinoma cells

As a novel human cytokine found recently, IL-24 could selectively kill tumor cells by multiple ways. Dendritic cells (DCs) are the major antigen-presenting cells. Recent studies have revealed that IL-24 can promote the antigen-presenting function of DCs. In this study, we evaluated the antitumor effect and mechanism of co-cultured cytokine-induced killer (CIK) cells and autologous DCs modified with IL-24 gene on hepatocellular carcinoma (HCC) cells. DCs and CIK cells were prepared routinely from human peripheral blood mononuclear cells. Recombinant adenovirus AdVGFP/IL-24 (Ad-IL24) was constructed expressing IL-24. IL-24 gene was transduced into DCs via Ad-IL24, the cells obtained were named DC-IL-24. We demonstrated that the expression rates of CD80, CD83, CD1a, HLA-DR, CD40, CXCR4 on DC-IL-24 were significantly increased compared with those of the control group. DC-IL-24 produced markedly higher levels of IL-24, IL-12 and TNF-α as compared with those of DCs. On comparison with non-transfected DCs co-cultured with CIK cells, transfected DCs co-cultured with CIK cells had a significant higher lytic activity against SMMC7721 cells, a HCC cell line.     

肝癌细胞裂解物致敏的树突状细胞瘤苗体外诱导特异性抗肝癌免疫

目的 探讨肝癌患者肿瘤细胞裂解物致敏的树突状细胞(DC)瘤苗体外诱导自体T淋巴细胞特异性抗肝癌免疫效应。 方法 从肝癌患者外周血单个核细胞中诱导D C,用重组人粒细胞-巨噬细胞集落刺激因子(rhGM-CSF)和白细胞介素-4(rhIL-4)刺激活化,经自体肝癌细胞裂解物致敏。用流式细胞仪检测D C细胞表面分子的表达,酶联免疫吸附法检测T淋巴细胞培养上清液中干扰素(I F N)γ和白细胞介索-12(IL-12)的含量,液体闪烁计数仪测定肝癌细胞裂解物致敏的D C刺激自体T淋巴细胞增殖效应,四甲基偶氮唑盐法检测肝癌细胞裂解物致敏D C诱导的细胞毒T淋巴细胞对自体肝癌细胞的特异性杀伤作用。 结果 肝癌细胞裂解物致敏的DC瘤苗可上调DC表面CD1 a、CD40、CD86和人类白细胞抗原-DR分子表达水平,其与T淋巴细胞共培养产生的IFN γ、IL-12的浓度明显高于未致敏的D C组(t值分别为2.30、2.14,P<0.05),肝癌细胞裂解物组(t值分别为14.01、15.40,P<0.01)和对照组(t值分别为14.85、16.87,P<0.01)。同时肝癌细胞裂解物致敏的瘤苗可明显诱导T淋巴细胞的增殖,其诱导的细胞毒性T淋巴细胞对自体肝癌细胞的杀伤率(81.72％±9.49％)显著高于对HepG2的杀伤率(49.37％±11.21％)和人鼻咽癌肿瘤细胞的杀伤率(17.14％±5.65％),P<0.01。 结论 肝癌细胞     

慢性HBV感染者、健康人树突状细胞经HBsAg活化后的免疫效应差异

目的:研究慢性HBV感染者、健康人外周血树突状细胞(dendriticcells,DC)经HBsAg活化后的免疫功能的差异.方法:从慢性HBV感染者、健康人外周血中培养扩增DC和CIK,在DC成熟前加入纯的HBsAg刺激,并再与同一来源的CIK共同培养.用流式细胞仪检测DC、CIK表型,用ELISA法检测DC、CIK共培养上清液中的IL-12浓度,用CCK-8比色法测定DC诱导CIK对HepG2.2.15细胞的杀伤活性.结果:未经HBsAg致敏的健康人DC表面标志CDla、CD80及CD83明显高于慢性HBV感染者(P<0.05);经HBsAg致敏的健康人DC表面标志均高于慢性HBV感染者,差异具有统计学意义(P<0.01);慢性HBV感染者经HBsAg致敏的DC表面标志与未经HBsAg致敏无显著性差异.CIK细胞CD3、CD8、CD3、CD56的双阳性表达率,健康人HBsAg致敏者明显高于慢性HBV感染者及未经HBsAg致敏的健康人(P<0.01,P<0.05);慢性HBV感染组HBsAg致敏与未经HBsAg致敏者比较无显著性差异(P>0.05).HBsAg致敏DC诱导CIK对HepG2.2.15细胞的杀伤率,健康人显著高于慢性HBV感染者(P<0.01).健康人HBsAg致敏DC、CIK共培养上清液中的IL-12浓度显著高于慢性HBV感染者(P<0.001);慢性HBV感染者HBsAg致敏与未经HBsAg致敏IL-12含量差异不显著(P>0.05).结论:慢性HBV感染者、健康人DC经HBsAg活化后对HepG2.2.15细胞的免疫效应存在显著差异:健康人高于慢性HBV感染者.     

Dendritic cells fused with allogeneic hepatocellular carcinoma cell line compared with fused autologous tumor cells as hepatocellular carcinoma vaccines

Purpose: To investigate the specific antitumor responses against autologous hepatocellular carcinoma (HCC) cells of dendritic cells (DCs) fused with allogeneic HCC cell line, and evaluated the feasibility of BEL7402 as an alternative strategy to deliver shared HCC antigens to DCs. Methods: Previous studies demonstrated fusions of patient‐derived DCs and autologous tumor cells could induce T‐cell responses against autologous tumors. These fusion cells require patient‐derived tumor cells, which are not, however, always available. Here, we report the fusing of autologous DCs with allogeneic HCC cell line to induced cytotoxic T‐lymphocyte (CTL) response against autologous HCC cells compare with autologous tumor cells. Results: These DC/ BEL7402 fusion cells co‐expressed tumor‐associated antigens and DC‐derived costimulatory and major histocompatibility complex molecules. Both CD4+ and CD8 T+ cells were activated by the fusion cells as demonstrated by the proliferation of T‐cells, the production of cytokines and the simultaneous induction of specific CTL responses. Significantly, CTL induced by dendritic cell/allogeneic BEL7402 fusion cells were able to kill autologous HCC cells by human leukocyte antigen‐A2 restricted mechanisms. The results did not show significant difference between DC fusion with autologous hepatocellular carcinoma cells and DC fusion with allogeneic hepatocellular carcinoma cell line. Conclusions: The fusion of allogeneic HCC cell line and autologous DCs may have applications in antitumor immunotherapy through cross‐priming against shared tumor antigens and may provide a platform for adoptive immunotherapy.     

Dendritic cells are functionally defective in multiple myeloma: the role of interleukin-6

We studied concentration, phenotype, and function of peripheral blood (PB) dendritic cells (DCs) from patients with multiple myeloma (MM). The absolute number of circulating precursors of myeloid and plasmacytoid DCs was significantly lower in MM patients than in healthy subjects. After maturation, PBDCs from MM patients showed significantly lower expression of HLA-DR, CD40, and CD80 antigens and impaired induction of allogeneic T-cell proliferation compared with controls. Remarkably, they were not capable of presenting the patient-specific tumor idiotype to autologous T cells. Conversely, DCs generated in vitro from CD14(+) monocytes from the same patients, and PBDCs freshly isolated from healthy donors efficiently stimulated allogeneic and autologous T cells. To clarify the mechanism of PBDC deficiency in MM, we investigated the effects of the main plasma cell growth factor, interleukin-6 (IL-6), on the development of DCs from CD34(+) cells. IL-6 inhibited the colony growth of CD34(+) DC progenitors and switched the commitment of CD34(+) cells from DCs to CD14(+) CD1a(-) CD86(-)CD80(-) CD40(+/-)HLA-DR +/- monocytic cells exerting potent phagocytic activity but no antigen-presentation capacity. This effect was reversed by anti-IL-6 antibodies. Growing CD34(+) cells in the presence of autologous serum (without IL-6) also suppressed the development of functional DCs. This study demonstrates that PBDCs from MM patients are functionally defective, partially because of IL-6-mediated inhibition of development. This brings into question the advisability of using PBDCs as antigen carriers for immunotherapy trials in MM. The results also suggest a novel mechanism whereby myeloma cells escape immune recognition.     

Induction of autologous CD4- and CD8-mediated T-cell responses against acute lymphocytic leukemia cell line using apoptotic tumor cell-loaded dendritic cells

OBJECTIVE: Several studies have demonstrated that dendritic cells (DCs) pulsed with tumor lysate or apoptotic tumor cells can elicit effective T-cell responses. This technique does not require the identification of the tumor antigen or HLA haplotype of the patient. We applied this approach to induce HLA class I- and class II-restricted T-cell responses directed against autologous acute lymphocytic leukemia (B-ALL) cell line NH-1. METHODS: Autologous T cells were stimulated by apoptotic tumor cell-loaded DCs generated from a patient with ALL. The stimulated and expanded T cells were isolated into CD8(+) T-cell line and CD4(+) T-cell line, and each of them was examined as to their functions. RESULTS: Both CD8(+) and CD4(+) T-cell lines demonstrated cytotoxicity against NH-1 in an major histocompatibility complex-dependent manner. Finally, we established two independent CD4(+) T-cell clones restricted to HLA-DR. The CD4(+) T-cell line responded strongly to autologous Epstein-Barr virus-transformed lymphoblastoid cell lines (EBV-LCL) but not to autologous normal cells. Furthermore, the T-cell clones also responded to allogeneic EBV-LCLs and B-ALL cell lines in the context of the HLA-DRB1( *)04051 molecule. Interestingly, 293T and COS-7 cells, which had been transfected with the HLA-DRB1( *)04051, were also recognized by T-cell clones. CONCLUSION: These findings indicate that B-ALL has shared and strong immunogenic epitopes expressed on HLA class II molecules, the expression of which is limited to immortalized cells. These data suggest that vaccinations using DCs loaded with apoptotic tumor cells might be a potent strategy in the treatment of B-ALL.     

Alpha-type 1-polarized dendritic cells loaded with apoptotic allogeneic myeloma cell line induce strong CTL responses against autologous myeloma cells

To induce a potent cytotoxic T lymphocyte (CTL) response, various tumor antigens should be loaded onto dendritic cells (DCs). In multiple myeloma (MM), it is difficult to obtain a sufficient number of autologous tumor cells as a source of tumor antigens in the clinical setting. We investigated the feasibility of immunotherapy in patients with MM, using myeloma-specific CTLs generated in vitro by alpha-type 1-polarized DCs (αDC1s) loaded with the ultraviolet B-irradiated allogeneic myeloma cell line, ARH77. αDC1s significantly increased the expression of several costimulatory molecules without differences in loading with tumor antigens. αDC1s showed a high production of interleukin-12 during maturation and after subsequent stimulation with CD40L but were not significantly affected by loading tumor antigens. Myeloma-specific CTLs against autologous myeloma cells from MM patients were induced by αDC1s pulsed with apoptotic ARH77 cells. Our data indicate that autologous DCs loaded with an allogeneic myeloma cell line can generate potent myeloma-specific CTL responses against autologous myeloma cells and might provide a practical method for cellular immunotherapy in patients with MM.     

Stimulation of autologous proliferative and cytotoxic T-cell responses by "leukemic dendritic cells" derived from blast cells in acute myeloid leukemia

Effective presentation of tumor antigens is fundamental to strategies aimed at enrolling the immune system in eradication of residual disease after conventional treatments. Myeloid malignancies provide a unique opportunity to derive dendritic cells (DCs), functioning antigen-presenting cells, from the malignant cells themselves. These may then co-express leukemic antigens together with appropriate secondary signals and be used to generate a specific, antileukemic immune response. In this study, blasts from 40 patients with acute myeloid leukemia (AML) were cultured with combinations of granulocyte-macrophage colony-stimulating factor, interleukin 4, and tumor necrosis factor alpha, and development to DCs was assessed. After culture, cells from 24 samples exhibited morphological and immunophenotypic features of DCs, including expression of major histocompatibility complex class II, CD1a, CD83, and CD86, and were potent stimulators in an allogeneic mixed lymphocyte reaction (MLR). Stimulation of autologous T-cell responses was assessed by the proliferative response of autologous T cells to the leukemic DCs and by demonstration of the induction of specific, autologous, antileukemic cytotoxicity. Of 17 samples, 11 were effective stimulators in the autologous MLR, and low, but consistent, autologous, antileukemic cytotoxicity was induced in 8 of 11 cases (mean, 27%; range, 17%-37%). This study indicates that cells with enhanced antigen-presenting ability can be generated from AML blasts, that these cells can effectively prime autologous cytotoxic T cells in vitro, and that they may be used as potential vaccines in the immunotherapy of AML.     

Immunotherapy by autologous dendritic cell vaccine in patients with advanced HCC

Background

Dendritic cells (DCs) could be used as potential cellular adjuvant for the production of specific tumor vaccines.

Objectives

Our study was aimed to evaluate the safety and efficacy of autologous pulsed DC vaccine in advanced hepatocellular carcinoma (HCC) patients in comparison with supportive treatment.

Methods

Thirty patients with advanced HCC not suitable for radical or loco-regional therapies were enrolled. Patients were divided into 2 groups, group I consisted of 15 patients received I.D vaccination with mature autologous DCs pulsed ex vivo with a liver tumor cell line lysate. Group II (control group, no. 15) received supportive treatment. One hundred and 4 ml of venous blood were obtained from each patient to generate DCs. DCs were identified by CD80, CD83, CD86 and HLA-DR expressions using flow cytometry. Follow up at 3, and 6 months post injection by clinical, radiological and laboratory assessment was done.

Results

Improvement in overall survival was observed. Partial radiological response was obtained in 2 patients (13.3 %), stable course in 9 patients (60 %) and 4 patients (26.7 %) showed progressive disease (died at 4 months post-injection). Both CD8⁺ T cells and serum interferon gamma were elevated after DCs injection.

Conclusion

Autologous DC vaccination in advanced HCC patients is safe and well tolerate.     

CIK细胞联合化疗对晚期非小细胞肺癌疗效观察

目的研究CIK细胞联合化疗对晚期非小细胞肺癌(NSCLC)患者生活质量、免疫功能影响以及其疗效和不良反应。方法 70例NSCLC患者随机分为对照组(长春瑞滨+顺铂:NP,35例)和联合组(CIK+NP,35例)。对两组疾病总有效率、总控制率、生活质量、免疫功能和不良反应进行对比。结果联合组总有效率28.6%与对照组22.9%无统计学差异,但总控制率77.1%明显高于对照组51.4%;联合组患者生活质量优于对照组;联合组患者治疗后外周血CD3+、CD4+、CD4+/CD8+百分率明显高于治疗前以及同期对照组水平;联合组不良反应小于对照组。结论 CIK细胞联合NP化疗方案副作用小,能提高患者机体免疫功能,能有效改善NSCLC患者生活质量。