Basic fibroblast growth factor enhanced LAK cell cytotoxicities against human bladder neoplasm cells 1

目的：探讨白细胞介素Ⅱ（ＩＬ２）和碱性成纤维细胞生长因子（ｂＦＧＦ）对膀胱癌患者淋巴因子激活的杀伤细胞（ＬＡＫ细胞）的作用．方法：用细胞计数观察不同浓度ｂＦＧＦ对ＬＡＫ细胞增殖的影响．以膀胱癌细胞系ＥＪ及新鲜分离患者自体肿瘤细胞（ＢＴＣ）为靶细胞,用ＭＴＴ法测定ＬＡＫ细胞对膀胱癌细胞的细胞毒作用．结果：虽然外周血单核细胞（ＰＢＭＣ）的增殖可被ｂＦＧＦ５μｇ·Ｌ－１所抑制,ＩＬ２所诱导的ＬＡＫ细胞的增殖却不受ｂＦＧＦ的影响,ｂＦＧＦ明显加强ＬＡＫ对ＥＪ细胞和ＢＴＣ的细胞毒作用．结论：虽然ｂＦＧＦ抑制ＰＢＭＣ的增殖,但ｂＦＧＦ又增强膀胱癌患者ＬＡＫ细胞对肿瘤细胞的细胞毒性．     

氨甲喋呤对类风湿性关节炎患者外周血单个核细胞产生细胞因子的影响

目的研究氨甲喋呤（ＭＴＸ）对类风湿性关节炎（ＲＡ）患者外周血单个核细胞（ＰＢＭＣ）产生细胞因子的影响。方法采用ＥＬＩＳＡ双抗夹心法，观察ＲＡ患者ＴＮＦ－α、ＩＬ－６的自发分泌及ＭＴＸ和ＬＰＳ的影响，以及ＭＴＸ和ＰＨＡ对ＩＬ－１０和ＩＦＮ－γ产生的影响。结果低浓度ＭＴＸ（５ｍｇ·Ｌ－１）有抑制ＲＡ患者ＰＢＭＣ自发分泌ＩＬ－６的作用，并对ＬＰＳ（１０ｍｇ·Ｌ－１）诱导ＩＬ－６的产生具有抑制作用，对ＴＮＦ－α的自发分泌及ＬＰＳ促分泌作用无明显影响；而高浓度ＭＴＸ（１５ｍｇ·Ｌ－１）对ＴＮＦ－α、ＩＬ－６和ＩＮＦ－γ均具有抑制作用；并能促进ＰＨＡ（１０ｍｇ·Ｌ－１）诱导ＩＬ－１０的产生；使ＩＬ－１０／ＩＮＦ－γ的比率上升。结论ＭＴＸ通过调节细胞因子网络（增高Ｔｈ２型细胞产生的细胞因子和降低Ｔｈ１型细胞产生的细胞因子）来发挥免疫调节作用和抑制炎症反应，这可能是其对ＲＡ产生治疗作用机制之一     

Inhibitory effects of α-methyl-4-(3-oxo-2H-1,2-benzoisoselenazol-2-yl)benzeneacetic acid on Cu~(2+) and Fe~(2+) induced oxidative modification of human low density lipoprotein

为观察α－甲基－４－（３－氧－２Ｈ－１，２－苯并异硒唑－２－基）苯乙酸（ＭＢＢＡ）对Ｃｕ２＋及Ｆｅ２＋氧化修饰低密度脂蛋白（ＬＤＬ）的保护作用及其作用机理，采用分光光度法测定ＬＤＬ中丙二醛（ＭＤＡ）和共轭双烯（ＣＤ）的产生量．ＭＢＢＡ（０．２－２μｍｏｌ·Ｌ－１）能以剂量依赖性抑制Ｃｕ２＋及Ｆｅ２＋诱导的ＭＤＡ和ＣＤ生成．２μｍｏｌ·Ｌ－１的ＭＢＢＡ对Ｃｕ２＋诱导ＬＤＬ产生ＭＤＡ和ＣＤ的抑制率分别为８９．７％和６０．３％．０．５ｍｍｏｌ·Ｌ－１ＧＳＨ对ＬＤＬ产生ＭＤＡ无影响，但能显著增强ＭＢＢＡ对ＭＤＡ生成的抑制作用．上述结果表明ＭＢＢＡ对ＬＤＬ氧化修饰的抑制作用可能依赖于其ＧＳＨ－Ｐｘ样活性的作用和（或）直接还原脂质氢过氧化物的作用．     

海洋硫酸多糖DPS对大鼠血管平滑肌细胞增殖的影响

本文采用碱性成纤维细胞生长因子（ｂＦＧＦ）和白介素－１（ＩＬ－１）氘诱导的大鼠血管平滑肌细胞（ＶＳＭＣ）增殖模型,以ＭＴＴ法观察了海洋硫酸多糖ＤＰＳ对ＶＳＭＣ增殖的影响。大鼠血管平滑肌细胞在ＤＰＳ浓度为０．００１μｇ／ｍｌ～１００μｇ／ｍｌ的２液中孵育２４ｈ后,分别加入ｂＦＧＦ（５０ｍｇ／ｍｌ）或ＩＬ－１（５０Ｕ／ＭＬ）再孵育２４ｈ,用ＭＴＴ法测定海洋硫酸多糖ＤＰＳ对ＶＳＭＣ增殖的影响。结果表明,     

Effects of heparin on growth factor-induced mitogenic and proliferative responses of rat pulmonary a

目的：探讨肝素是否能抑制生长因子诱导的大鼠肺动脉平滑肌细胞（ＰＡＳＭＣ）分裂和增殖．方法：应用含１０％ＦＢＳ的Ｍ１９９培养液培养大鼠ＰＡＳＭＣ．细胞分裂及细胞增殖分别用［ｍｅｔｈｙｌ３Ｈ］ＴｄＲ和细胞计数监测．结果：ＦＢＳ（１０％），以及ＦＢＳ（１％）与ＰＤＧＦ（５０μｇ·Ｌ－１），ＦＧＦ（５０μｇ·Ｌ－１），或ＩＬ１α（１００ｎｇ·Ｌ－１）联合应用均能增加大鼠ＰＡＳＭＣ分裂．肝素（１００ｍｇ·Ｌ－１）抑制１０％ＦＢＳ诱导的大鼠ＰＡＳＭＣ增殖（２８％±６％）和胸腺嘧啶摄取反应（２７％±７％），抑制ＦＢＳ（１％）与ＰＤＧＦ（５０μｇ·Ｌ－１），ＦＧＦ（５０μｇ·Ｌ－１），或ＩＬ１α（１００ｎｇ·Ｌ－１）联用诱导的大鼠ＰＡＳＭＣ增殖（２５％±６％，２７％±７％，２０％±４％），以及胸腺嘧啶摄取反应（２３％±７％，２６％±６％，２０％±６％）．结论：肝素抑制生长因子诱导的大鼠ＰＡＳＭＣ的分裂与增殖．     

肝素对生长因子诱导的大鼠肺动脉平滑肌细胞分裂和增殖的影响

目的：探讨肝素是否能抑制生长因子诱导的大鼠肺动脉平滑肌细胞（ＰＡＳＭＣ）分裂和增殖。方法：应用含１０％ＦＢＳ的Ｍ－１９９培养液培养大鼠ＰＡＳＭＣ。细胞分裂及细胞增殖分别用［ｍｅｔｈｙｌ－＾３Ｈ］ＴｄＲ和细胞计数监测。结果：ＦＢＳ（１０％），以及ＦＢＳ（１％）与ＰＤＧＦ（５０μｇ·Ｌ＾－１），ＦＧＦ（５０μｇ·Ｌ＾－１），或ＩＬ－１α（１００ｎｇ·Ｌ＾－１）联合应用均能增加大鼠ＰＡＳＭＣ分裂。肝素（     

抗人CD3单抗在体外诱导LAK和TIL增殖的实验研究

目的 观察抗人ＣＤ３单抗（ａＣＤ３ＭｃＡｂ）对单核细胞（ＰＢＭＣ）和肿瘤组织中提取的浸润淋巴细胞（ＴＩＬ）增殖的影响。方法 将外周血中分离出的ＰＢＭＣ和ＴＩＬ进行扩增培养,同时测定其活性。结果 ａＣＤ３ＭｃＡｂ和白细胞介素－２（ＩＬ－２）的浓度是包被法制备ＣＤ３单克隆抗体激活的杀伤细胞（ＣＤ３ＡＫ）的主要影响因素。经选择ａＣＤ３ＭｃＡｂ的最适蛋白浓度为０．１ｕｇ／ｍｌ,ＩＬ－２为２０Ｕ／ｍｌ。结论     

重组人红细胞生成素单克隆抗体的制备和鉴定

以重组人红细胞生成素免疫ＢＡＬＢ／ｃ小鼠，通过淋巴细胞杂交瘤技术将ＢＡＬＢ／ｃ小鼠脾细胞和Ｓｐ２／０骨髓瘤细胞融合，经ＥＬＩＳＡ法筛及有限稀释法克隆化，制备了２株能稳定分泌抗ｒＨｕＥＰＯ单克隆抗体的小鼠杂交瘤细胞系Ｇ５０和Ａ９４。用鼠阊我隆抗体分型试剂盒鉴定，其分泌的ＭｃＡｂ亚类均是ＩｇＧ１。经ＥＬＩＳＡ鉴定，两组ＭｃＡｂ只与ｒＨｕＥＰＯ特异性结合，与ＩＬ－１，ＧＭ－ＣＳＦ，ＩＦＮ－α和ＩＦＮ－ｒ     

一种新番荔枝内酯单体atemoyacin—B克服肿瘤多药抗药性

目的 探讨ａｔｅｍｏｙａｃｉｎ－Ｂ（Ａｔｅ）克服肿瘤多药抗药性（ＭＤＲ）作用及机制。方法 Ｂｕｌｌａｔａｃｉｎ（Ｂｕｌ）为阳性对照物,细胞毒测定以ＭＴＴ法,Ｐｇｐ功能测定以Ｆｕｒａ２－ＡＭ法,细胞内药物积累测定以荧光分光光度计法;细胞凋亡测定以流式细胞仪法,结果：Ａｔｅ对ＭＣＦ－７／Ｄｏｘ,ＭＣＦ－７,ＫＢＶ２００和ＫＢ细胞的ＩＣ５０分别为１２２,１２０,１．３４,１．２７ｍｍｏｌ．Ｌ＾－１,Ａｔ     

血清和支气管肺泡灌洗液多种肿瘤标志物联合检测对肺癌诊断价值的探讨

目的：探讨血清和支气管肺泡灌洗液（ＢＡＬＦ）中肿瘤标志物联合检测对肺癌诊断的价值。方法：采用放射免疫分析方法对癌胚抗原（ＣＥＡ）、铁蛋白（ＦＴ）和（β２－ＭＧ）进行分析。结果：肺癌患者血清及ＢＡＬＦ中ＣＥＡ、ＦＴ浓度均明显高于肺良性病变组,两组比较有显著性差异（Ｐ〈０．０１或Ｐ〈０．０５）。ＢＡＬＦ中ＣＥＡ、Ｆ物浓度 血清浓度,且腺癌ＣＥＡ和ＦＴ浓度高于鳞癌和小细胞未分化癌。β２－ＭＧ的血清和ＢＡ     

Tretinoin or retinol enhancement of lymphokine-activated killer cell proliferation and cytotoxicity against human bladder cancer cells in vitro.

AIM: To study the effect of tretinoin (Tre) or retinol (Ret) on the proliferation of lymphokine-activated killer (LAK) cells in patients with transitional cell cancer of bladder and their cytolysis to bladder tumor cells. METHODS: LAK cell proliferation was assayed in the presence of either Tre or Ret by cell counting. Human transitional bladder cancer cell lines BIU-87, EJ, or bladder tumor cells (BTC) from patients with bladder cancer were used as target cells and cytotoxicity of LAK cells was determined by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. RESULTS: The proliferation of LAK cells induced by interleukin-2 (IL-2) was stimulated by Tre or Ret (10-100 nmol.L-1). The cytotoxicity of LAK cells against BIU-87, EJ cells, or BTC was enhanced by pretreatment of LAK cells with Tre or Ret 10-100 nmol.L-1. CONCLUSION: Tre or Ret enhances the proliferation and cytotoxicity of LAK cells from patients with bladder cancer. Retinoids are potential in adoptive immunotherapy of bladder cancer.     

丝裂霉素或顺铂对离体淋巴因子激活的杀伤细胞增殖和抗膀胱癌细 …

AIM: To study the effect of mitomycin (Mit) or cisplatin (Cis) on the proliferation of lymphokine-activated killer (LAK) cells in patients with transitional cell cancer of bladder and their cytolysis to bladder tumor cells. METHODS: LAK cell proliferation was assayed in the presence of Mit or Cis by cell counting. Bladder cancer cell lines BIU-87 and EJ were cultured as target cells and cytotoxicity of LAK cells was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. RESULTS: The proliferation of LAK cells induced by recombinant interleukin-2 (IL-2) was inhibited by Cis in a concentration-dependent manner and was decreased to 55.3% at 100 mg.L-1 compared with control at 96 h. The enhanced growth of the LAK cells was observed with Mit 5-10 mg.L-1 from 48 to 96 h. Cis 10 mg.L-1 increased the cytotoxicity against BIU-87 and EJ cells. CONCLUSION: Immunomodulatory effect of chemotherapeutic agents on LAK cell proliferation induced by IL-2 in patients with bladder cancer mainly depends on the drug itself.     

活性氧自由基对膀胱癌患者淋巴因子激活的杀伤细胞的作用

目的:探讨活性氧自由基对膀胱癌患者淋巴因子激活的杀伤(LAK)细胞的增殖和抗膀胱癌细胞系活性的作用.方法:分别用细胞计数和MTT法测定LAK细胞的增殖和细胞毒作用.结果:羟自由基浓度依赖性地抑制IL-2所诱导的LAK细胞增殖.用抗坏血酸400μmol·L~(-1)和硫酸亚铁40μmol·L~(-1)培养细胞96h,细胞增殖被抑制34.5％.这种抑制可被一定浓度的甘露醇和依地酸(edetic acid)扭转.一定浓度的超氧阴离子或一氧化氮释放剂硝普钠可刺激由IL-2所诱导的LAK细胞的增殖.超氧化物歧化酶(SOD)可抵消超氧阴离子的刺激作用.外源性超氧阴离子可加强LAK细胞对BIU-87和EJ细胞的杀伤.羟自由基和SOD对LAK细胞杀伤作用则影响不明显.结论:超氧阴离子和一氧化氮可增强膀胱癌患者LAK细胞的增殖、激活和抗肿瘤的细胞毒,而羟自由基对此起抑制作用.这两种活性氧自由基对IL-2诱导的LAK细胞增殖的作用是不同的.     

Licochalcone B inhibits growth of bladder cancer cells by arresting cell cycle progression and inducing apoptosis

To examine the mechanisms by which licochalcone B (LCB) inhibits the proliferation of human malignant bladder cancer cell lines (T24 and EJ) in vitro and antitumor activity in vivo in MB49 (murine bladder cancer cell line) tumor model. Exposure of T24 or EJ cells to LCB significantly inhibited cell lines proliferation in a concentration-dependent and time-dependent manner, and resulted in S phase arrest in T24 or EJ cells, respectively. LCB treatment decreased the expression of cyclin A, cyclin-dependent kinase (CDK1 and CDK2) mRNA, cell division cycle 25 (Cdc25A and Cdc25B) protein. In addition, LCB treatment down-regulated Bcl-2 and survivin expression, enhanced Bax expression, activated caspase-3 and cleaved poly (ADP-ribose) polymerase (PARP) protein. Consistently, the tumorigenicity of LCB-treated MB49 cells was limited significantly by using the colony formation assay in vitro and the MB49 tumor model performed in C57BL/6 mice in vivo. These findings provide support for the use of LCB in chemoprevention and bladder cancer therapy.     

Effect of Salmonella-infected human monocytes on natural killer cell cytotoxicity. In vitro studies.

Various chemicals, including some bacteria-derived components, modulate natural killer cell (NKC) activity. We have analyzed the effect of wild-type Ty2 and of mutant strain TYT1231 Salmonella typhi-infected monocytes (U937 cells and human autologous monocytes) on NKC cytotoxicity of peripheral blood mononuclear cell (PBMC) and highly purified NKC (HPNKC; CD16+/56+ > 95%; the rest corresponding to CD3+ T-cells). PBMC's co-culture with either S. typhi strain infected U937 cells (medium or non-infected U937 cells as controls) resulted in the induction of lymphocyte activated killer (LAK) cell activity showing cytotoxicity against target human NKC-resistant lymphoblastoid Daudi cell line. Comparable experiments using autologous monocytes gave similar results. Co-culture of HPNKC preparations with either S. typhi strain infected U937 cells resulted in increased LAK cell activity against target Daudi cells in each and everyone of the five samples tested; paired Student's t-test p < 0.01 for both times (20 and 40 h) tested. Similar to the results observed in the experiments using PBMC, we did not find significant differences in the ability between medium and non-infected cells, or between wild-type S. typhi Ty2 and mutant strain TYT1231 infected U937 cells, to induce LAK activity in HPNKC preparations. PBMC co-incubation with either S. typhi strain infected U937 cells or autologous monocytes resulted in significant increases in IL-12, TNF-alpha, and IFN-gamma secretion. In similar experiments using HPNKC samples instead, infected U937 cells significantly increased IL-12 and IFN-gamma, but not TNF-alpha secretion. PBMC co-incubation with non-infected U937 cells, but not with non-infected monocytes, significantly increased supernatant IL-12 and TNF-alpha levels (no significant changes in IFN-gamma were recorded). Secreted cytokines remained essentially unchanged after co-incubating HPNKC preparation with non-infected U-937 cells. Incubation of PBMC or HPNKC preparations with either S. typhi strain infected U937 cells failed to produce significant changes in the expression of NKC lineage (CD16+/56+) or activation (CD28+, CD69+ and CD95+) markers. The ability of infected monocytes to induce LAK activity, release NKC cytokines and upmodulate NKC's CD95+ marker expression was essentially the same for both infecting Salmonella strains used. These results suggest a role for NKC in the physiological defensive response against intracellularly infected monocytes representing, perhaps one of the earliest antimicrobial mechanisms of the innate immune system.     

A—LAK,CD3—AK细胞体外对人小细胞肺癌细胞株的杀伤实验研究

目的：通过体外杀伤实验,比较ＬＡＫ,Ａ－ＬＡＫ,ＣＤ３ＡＫ细胞对人小细胞肺癌细胞株ＬＥＰＴ－ｓｍｌ的杀伤活性。方法：利用脐带血制备ＬＡＫ,Ａ－ＬＡＫ,ＣＤ３３ＡＫ细胞,观察其增殖、细胞表面ＩＬ－２Ｒ表达、细胞表型改变及对ＬＥＰＴ－ｓｍｌ细胞的细胞毒作用。结果：Ａ－ＬＡＫ,ＣＤ３ＡＫ比ＬＡＫ细胞具有更强的增殖能力的抗瘤活性。结论：Ａ－ＬＡＫ,ＣＤ３ＡＫ具有增殖能力和肿瘤杀伤能力强的优点,临床应用潜力     

商陆多糖Ⅰ联合白细胞介素2对小鼠脾细胞杀瘤活性的影响

商陆多糖Ⅰ(PAP-I),0.3～3μg·ml^-1和小鼠脾细胞培养3～5d可显著增强其杀伤P815肿瘤细胞活性及IL-2(250～500IU·ml^-1)诱导的LAK细胞活性,最适浓度为1μg·ml^-1。PAP-I及IL-2和脾细胞培养的上清液对P815肿瘤细胞无细胞毒作用,但能增强脾细胞及LAK细胞杀瘤活性。PAP-I,5,10及50mg·kg-1,ip可增强脾细胞杀伤P₈₁₅和L₉₂₉细胞的活性及IL-2诱导的LAK细胞活性。     

Cytotoxic triterpenoid saponins from Ardisia gigantifolia

Three new triterpenoid saponins, 1- 3, together with two known saponins, 4 and 5, were isolated from the rhizome of Ardisia gigantifolia. Their structures were elucidated by 1D and 2D NMR spectroscopic studies. Saponins 1, 2, 4, and 5 exhibited significant cytotoxicity against four human cancer cell lines, namely, Hela human cervical carcinoma cells, EJ human bladder tumor cells, HepG-2 human hepatoma cells, and BCG human gastric carcinoma cells with IC (50) values in the range of 1.9-4.8 μM.     

Ampelopsin sodium exhibits antitumor effects against bladder carcinoma in orthotopic xenograft models

The aim of this study was to establish xenograft models of tumor in mice bladder and evaluate the antitumor efficacy of ampelopsin sodium (Amp-Na). A total of 2×10 human bladder carcinoma EJ cells and murine sarcoma 180 cells were instilled into the bladder of BALB/c nu/nu mice and Swiss mice after preconditioning to establish the tumor model. Mice bearing orthotopic tumors were treated with Amp-Na by intravenous, intraperitoneal, or intravesical instillation. In addition, the pharmacokinetics property of Amp-Na was investigated in normal BALB/c mice. Our results showed that Amp-Na was excreted mainly through the urine, where it existed at a high concentration. Amp-Na significantly inhibited the proliferation of EJ and sarcoma 180 cells both in vivo and in vitro and this can be at least partially attributed to the cell cycle arrest induced by Amp-Na. This study suggests that the use of Amp-Na is an attractive chemotherapeutic modality for bladder cancer patients.