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1.
Objective To observe the detrimental effects of 6 known antifertility compounds and 22 natural compounds which may have the antifertility activity to the human trophoblast cells and decidual cells, to check the model for screening new antifertility drugs, and to screen new active antifertility compounds.Methods The culture method for human trophoblast cells and decidual cells and hCG radioimmunoassay were applied to observe and screen antifertility activity of microcompounds.Results Antifertility compound Ru486 (100 μg/ml), Tamoxifen (20 μg/ml), Anordrin (100 μg/ml) and Trichothanthin (50 μg/ml) not only injured the morphology of human trophoblast cells, but also inhibited the hCG secretion of them, whereas Pseudolaric acid B (100 μg/ml) and Yuanhuacine A ( 0.5 μg/ml) only altered the morphology of trophoblast cells.Among 22 natural compounds detected, 100 μg/ml of Hml, Hmlo, TR4, T2 were not only detrimental to the trophoblast cells but also inhibitory to the hCG secretion.Antifertility compounds Ru486(10 μg/ml), Anordrin (60 μg/ml), Pseudolaric acid B (50 μg/ml) and Yuanhuacine Ⅰ (0.5 μg/ml) were detrimental to human decidual cells, whereas Trichothanthin did not alter the morphology of decidual cells.Among 22 natural compounds detected, TR4 was evidently detrimental to decidual cells, whereas Zh-1 and other 19 compounds had no effect.Conclusion Human trophoblast cells and decidual cells in vitro may be taken as the model for screening antifertility drugs; TR4 was evidently detrimental to the trophpblast cells and decidual cells and deserves further research.  相似文献   

2.
The anticancer activity of trichostain A (TSA) on human B cell non-Hodgkin's lymphoma and its mechanism were explored. The effect of TSA on the growth of Raji cells and normal peripheral blood mononuclear cells (NPBMNC) was studied by MTT assay. The effect of TSA on the apoptosis of Raji cells and NPBMNC was studied by flow cytometry and TDT-mediated dUTP nick end labeling (TUNEL). The effect of TSA on the cell cycle of Raji cells was studied by propidium iodide method. The results showed that TSA potently inhibited proliferation of Raji cells at microgram concentrations and induced apoptosis of Raji cells in a time- and concentration-dependent manner. Treatment with TSA induced accumulation of cells in G0/G1 or G2/M and a concomitant decrease of cell population in S phase. However, NPBMNC was less sensitive to the cytotoxic effect of TSA than Raji cells. It was concluded that TSA may inhibit the proliferation of Raji cells by regulating the cell cycle and inducing the cell apoptosis. Moreover, TSA demonstrates low toxicity in NPBMNC but selectively induces apoptosis of Raji cells.  相似文献   

3.
In order to investigate the effects of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) on the proliferation, apoptosis of pancreatic cancer cell line SW1990 cells and the expression of cyclin E mRNA, the SW1990 cells were treated with different concentrations of EPA or DHA (20, 40, 60 μg/mL) for 0, 12, 24, 36 and 48 h respectively. By using MTF method, the inhibitory effects of EPA or DHA on the cell growth were assayed. Real time PCR was used to detect the expression changes of cyclin E mRNA after the SW1990 cells were treated with 40μg/mL EPA or DHA for different time. Flow cytometry was used to test the changes of apoptostic rate in the SW1990 cells treated with different concentrations of EPA or DHA for 24 h. The results showed that EPA and DHA could inhibit the growth of SW1990 cells in a time- and concentration-dependent manner (P〈0.01). EPA or DHA could also significantly inhibit the expression of cyclin E mRNA in a time-dependent manner (P〈0.05). EPA or DHA could induce the apoptosis of SW1990 cells in a concentration-dependent manner (P〈0.01). It was concluded that ω-3 fatty acid could inhibit the proliferation of pancreatic cancer cell line SW1990 cells and promote their apoptosis. The down-regulation of the cyclin E expression by ω-3 fatty acid might be one of the mechanisms for its anti-tumor effect on pancreatic cancer.  相似文献   

4.
The cytotoxicity of captafol,a phthalimide-derived fungicied,was evaluated in IB-RS-2 cells.Captafol at 0.12-1.0μg/ml blocks the cell multiplication.This effect is concentrationdependent,only partially reversible and the degree of inhibition increases with time.The synthesis of DNA and RNA is inhibited in parallel by increasing concentrations of the chemical.  相似文献   

5.
The expression of human general control of amino acid synthesis protein 5 (hGCN5) in human Burkitt's lymphoma Daudi cells in vitro, effects of Trichostatin A (TSA) on cell proliferation and apoptosis and the molecular mechanism of TSA inhibiting proliferation of Daudi cells were investigated. The effects of TSA on the growth of Daudi cells were studied by 3-(4, 5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium (MTT) assay. The effect of TSA on the cell cycle of Daudi cells was assayed by a propidium iodide method. Immunochemistry and Western blot were used to detect the expression of hGCN5. The proliferation of Daudi cells was decreased in TSA-treated group with a 24 h IC50 value of 415.3979μg/L. TSA induced apoptosis of Daudi cells in a time- and dose-dependent manner. Treatment with TSA (200 and 400μg/L) for 24 h, the apoptosis rates of Daudi cells were (14.74±2.04) % and (17.63±1.25) %, respectively. The cell cycle was arrested in G0/G1 phase (50, 100μg/L) and in G2/M phase (200μg/L) by treatment with TSA for 24 h. The expression of hGCN5 protein in Daudi cells was increased in 24 h TSA-treated group by immu-nochemistry and Western blot (P<0.05). It was suggested that TSA as HDACIs could increase the expression of hGCN5 in Daudi cells, and might play an important role in regulating the proliferation and apoptosis of B-NHL cell line Daudi cells.  相似文献   

6.
Objective To induce and culture the dendritic cells in the peripheral blood of breast cancer patients and research on their phenotype.Methods Mononuclear cells were isolated by Ficoll Hypaque centrifugation from32breast cancer patients‘peripheral blood.These cells were plated in six-well culture plates(10^6/ml,2ml/well)in RPMI1640medium supplemented with10%heat-in-activated fetal bovine serum,100ng/mlGM-CSF,20ng/mlIL-4,and/or20n g/mlTNF-α.Twohours later,nonadherent cells were gently removed and fresh medium was added.Cultured cells were ana-lyzed by flow cytometry with flujorescence labeled monoclonal antibodies.Pictures of cultured and fluores-cence stained cells were taken by confocal scanning microscope.Results The diameter of the cells was between 10and 20micron.Cells displayed a characteristicCD1a^ ,CD40^ ,CD80^ ,CD86^ and CD83^ phenotypes.All of these molecules were not specific for dendritic cells.CD1a and CD83 molecules could also be expressed on the surface of CD3^ T lymphocytes and CD19^ B lymphocytes,es-pecially on activated lymphocytes.Conclusion The molecules of CD1a and CD83 are not specific phenotypes for dendritic cells.Currently,we still need to apply both cell morphology and costimulatory molecules such as CD40,CD80,and CD86to the identification of dendritic cells.  相似文献   

7.
The anti-cancer effects of betulinic acid (BA) on Jurkat cells and its in vitro mechanism were examined by using MTT assay. Apoptosis was detected by using Hoechst33258 staining and annexin-Ⅴ/PI double-labeled cytometry. The effects of betulinic acid on the cell cycle of Jurkat cells were studied by propidium iodide method. RT-PCR and Western blotting were used to analyze the changes of cyclin D3, bcl-xl mRNA and protein levels in Jurkat cells after treatment with betulinic acid. Our results showed the proliferation of Jurkat cells was decreased in betulinic acid-treated group with a 24-h IC50 value being 70.00 μmol/L. Betulinic acid induced apoptosis of Jurkat cells in a time-and dose-dependent manner. The number of Jurkat cells treated with betulinic acid showed an increase in G0/G1 phase and decrease in S phase. After treatment with 0, 20, 60, 100 μmol/L betulinic acid for 24 h, the number of Jurkat cells was increased from (31.00±1.25)% to (58.84±0.32)% in G0/G1 phase, whereas it was decreased from (61.45±1.04)% to (35.82±1.95)% in S phase. PBMCs were less sensitive to the cytotoxicity of betulinic acid than Jurkat cells. The expressions of cyclin D3, bcl-xl mRNA and protein were decreased sharply in Jurkat cells treated with betulinic acid. It is concluded that betulinic acid is able to inhibit the proliferation of Jurkat cells by regulating the cell cycle, arrest cells at G0/G1 phase and induce the cell apoptosis. The anti-tumor effects of betulinic acid are related to the down-regulated expression of cyclin D3 and bcl-xl.  相似文献   

8.
The effects of Trichostatin A (TSA) on histone deacetylase 8 (HDAC8) expression, proliferation and cell cycle arrest in T-lymphoblastic leukemia cell line Molt-4 cells in vitro were investigated. The effect of TSA on the growth of Molt-4 cells was studied by MTT assay. Flow cytometry was used to examine the cell cycle. The expression of HDAC8 was detected by using immunocyto-chemistry and Western blot. The results showed that proliferation of Molt-4 cells was inhibited in TSA-treated group in a time- and dose-dependent manner. The IC50 of TSA exposures for 24 h and 36 h were 254.3236 and 199.257μg/L respectively. The cell cycle analysis revealed that Molt-4 was mostly in G0/G1 phase, and after treatment with TSA from 50 to 400μg/L for 24 h, the percents of G0/G1 cells were decreased and cells were arrested in G2/M phase. Treatment of TSA for 24 h could significantly inhibit the expression of HDAC8 protein in Molt-4 cells (P<0.01). It was concluded that TSA could decrease the expression of HD AC8 in Molt-4 cells, which contributed to the inhibition of proliferation and induction of cell cycle arrest in Molt-4 cells.  相似文献   

9.
To study the effect of fluconzole derivatives from a side chain containing 4-substituted acyl piperazin-1-yl on antifungal activity. Methods: Fourteen title compounds were synthesized and confirmed by the elementaryanalysis, ^1HNMR and IR spectra. Five deep fungal strains and 3 shallow fungal strains were chosen as the experimental strains. Minimum inhibitory, concentrations(MICs) of all title coropounds were determined by the method recommended by the National Committee for Clinical Laboratory Standm‘ds (NCCLS) using RPMI 1640 test medium. Results: Among the 14 title compounds, 12 were first reported. The results of preliminary antifungal test showed that all the title compounds exhibited potent antifungal activities to a certain extent. The activity of 4 compounds were more than 4 times as high as that off luconazole and equal to that of ketoconazole against Candida albicans in vitro(MIC80 value≤0.125μg/ml). Conclusion:Introduction of a side chain containing 4-substituted acyl piperazin-1-yl into the main part of fluconazole has important influence on antifungal activities of title compounds.  相似文献   

10.
Summary:In order to study the effect of tanshinone Ⅱ_A on growth and apoptosis in human hepatomacell line BEL-7402 in vitro,the human hepatoma cell line BEL-7402 was treated with tanshinone Ⅱ_Aat various concentrations for 72 h.Growth suppression was evaluated by MTT assay;apoptosis-relat-ed alterations in morphology and biochemistry were ascertained under cytochemical staining(Hoechst33258),transmission electron microscopy(TEM),and DNA agarose gel electrophoresis.Apoptoticrate was quantified by flow cytometry(FCM).The results showed thst Tanshinone Ⅱ_A could inhibitthe growth of hepatoma cells in a dose-dependent manner,with IC_(50) value being 6.28μg/ml.Aftertreatment with 1—10 μg/ml tanshinone Ⅱ_A for 72 h,BEL-7402 cells apoptosis with nuclear chro-matin condensation and fragmentation as well as cell shrinkage and the formation of apoptotic bodieswere observed.DNA ladder could be demonstrated on DNA electrophoresis.FCM analysis showedhypodiploid peaks on histogram,and the apoptotic rates at 5  相似文献   

11.
肖乐  曹建彪 《中国全科医学》2007,10(10):847-849
巢素蛋白(nestin)阳性细胞、成体干细胞(包括间充质干细胞和胰腺导管上皮细胞)和胚胎干细胞是常用的体外诱导转化为胰岛细胞的种子细胞,本文就这三类细胞的来源、实验方法及实验结果的研究进展进行综述。  相似文献   

12.
大鼠骨髓间质干细胞定向分化为神经元的实验研究   总被引:5,自引:3,他引:5  
 【目的】 研究体外培养骨髓来源的表达nestin的成年大鼠骨髓间质干细胞(MSC)并诱导分化神经元样细胞的潜能,为中枢神经系统疾病的细胞移植治疗提供理想的供体&#65377;【方法】 采用全骨髓法分离培养成年SD大鼠MSC,传至第6代的MSC接种在前一天涂有100 μg/L多聚赖氨酸的塑料培养瓶或培养皿中,用含100 mL/L FBS的DMEM/F12培养液添加10 ng/mL bFGF的培养液培养并以DMSO&#65380;BHA与Forskolin等诱导剂联合诱导MSC分化为神经元&#65377;流式细胞仪鉴定诱导前MSC的细胞表面抗原,免疫荧光检测诱导前及诱导后6 h&#65380;12 h&#65380;24 h神经元特异性抗原nestin&#65380;NF*9鄄200和GFAP表达率&#65377; 【结果】 流式细胞仪检测传至第6代MSC表面抗原CD29和CD44阳性率分为98.8%,96.6%, CD34和CD45阴性&#65377; 免疫荧光鉴定传至第6代的MSC表达nestin阳性率为57.1% ± 6.9%,不表达NF*9鄄200和GFAP&#65377;诱导后30 min可见神经元样细胞出现,诱导后6 h&#65380;12 h&#65380;24 h经nestin和NF*9鄄200免疫荧光鉴定,诱导后6 h&#65380;12 h&#65380;24 h nestin阳性率分别为96.5% ± 1.9%,88.1% ± 5.4%,33.5% ± 5.4%,NF*9鄄200阳性率分别为90.1% ± 2.9%,97.5% ± 1.3%,98.1% ± 1.6%&#65377;【结论】 骨髓来源的nestin阳性的MSC具有神经祖细胞特性并且可诱导分化为神经元样细胞,可作为种子细胞用于神经系统疾病的治疗&#65377;  相似文献   

13.
AnordrinisasteroidwithalossofonecarbonatomatAring(2α,17α-di-ethynyl-A-nor-androstane,2β,17β-dioldipropionate).Researchperformedprevious-lyhasdemonstratedthatithasantifertilityandterminationofearly-pregnancyfunc-tionobviously[1-3].Clinicalobservationc…  相似文献   

14.
高泳  何秉燕  刘湘芬 《医学新知杂志》2005,15(4):37-38,F0004
目的探讨CD3AK细胞诱导白血病Jurkat细胞凋亡的效果.方法用细胞形态学观察,DNA琼脂糖电泳,原位末端标记法分别检测Jurkat自然凋亡率和CD3AK细胞诱导的Jurkat细胞凋亡率.结果 Jurkat细胞自然凋亡率为(4.60±2.17)%;CD3AK细胞诱导的Jurkat细胞凋亡率为(27.38±4.91)%,两者之间具有显著性差异(t=15.1P<0.01).结论 CD3AK细胞能诱导白血病Jurkat细胞凋亡.  相似文献   

15.
目的 探讨体外分离、培养成人外周血单个核细胞,并将其定向诱导分化为内皮祖细胞及成熟血管内皮细胞的方法.方法 密度梯度离心法提取人外周血单个核细胞,用含有生长因子的内皮培养基将其体外培养、定向诱导分化为内皮祖细胞及成熟血管内皮细胞;分别用流式细胞技术及RT-PCR通过对内皮祖细胞及内皮细胞表面特异性抗原的检测进行细胞鉴定.结果 分离获得的单个核细胞培养7 d后形成梭状的内皮样细胞,部分细胞积聚成团形成克隆集落,流式细胞仪鉴定该细胞表达内皮祖细胞特异性抗原CD34、CD133及VEGFR.继续培养4周后细胞形成典型铺路石样改变,RT-PCR检测有成熟血管内皮细胞特异性基因vWF、eNOS表达.结论 可成功分离人外周血单个核细胞,并可将其定向诱导分化为内皮祖细胞及成熟内皮细胞.  相似文献   

16.
Marrowstromalcells (MSCs)arethenon hematopoieticprecursorsinthebonemarrowstromaofadultmammal.Underspecificexperimentalcondi tions,itcandifferentiateintoneuron[1] .Thephe nomenonhasgivenresearchersagreatsurprise .Andnow ,thehotspotistofinditstrueevidence ,…  相似文献   

17.
目的探索呼吸道合胞病毒(RSV)感染的气道上皮细胞对大鼠髓系树突状细胞(mDCs)激活和功能的影响,为研究RSV诱发哮喘的机制提供依据。方法大鼠气道上皮细胞株进行培养。在对RSV进行扩增和滴度测定后,以不同作用时间、不同滴度的RSV感染大鼠气道上皮细胞。同时分离、培养扩增大鼠mDCs,采用transwell细胞共培养系统将大鼠气道上皮细胞和大鼠mDCs共培养。其mDCs通过RT-PCR和流式细胞术检测成熟标志物和Th2细胞因子的表达、同种异体混合淋巴细胞反应(MLR)。结果大鼠mDCs与RSV感染的大鼠气道上皮细胞共培养后出现功能性成熟,包括大鼠mDCs表面共刺激分子MHCⅡ和CD86的表达增多,OX40L和TARC的mRNAs表达增高,大鼠mDCs刺激T细胞增殖的能力增强。结论 RSV感染大鼠气道上皮细胞能够促使大鼠mDCs进一步成熟并且可能具有支持Th2细胞分化和局部聚集的能力,可能是RSV诱发哮喘的一种机制。  相似文献   

18.
目的 通过研究浸润T淋巴细胞的存在对髓系来源的抑制性细胞(MDSC)数量变化的影响,探讨浸润T淋巴细胞在肿瘤微环境中对MDSC的募集作用。方法 建立BALB/c小鼠和免疫缺陷裸鼠荷瘤模型,进行裸鼠荷瘤T淋巴细胞过继实验和抗体阻断T淋巴细胞实验,观察对肿瘤生长的影响,采用肿瘤组织HE染色观察病理组织学变化,采用流式细胞术 (FACS) 检测肿瘤组织内MDSC的数量变化。结果 荷瘤裸鼠肿瘤较正常小鼠荷瘤的肿瘤生长更快(P<0.05),肿瘤微环境中MDSC的百分率更低,与正常小鼠肿瘤组织相比差异有统计学意义(P<0.05)。接受T淋巴细胞过继后的荷瘤裸鼠肿瘤微环境中MDSC百分率有增加(P<0.05)。接受抗体阻断实验的过继荷瘤裸鼠肿瘤组织内MDSC百分率减少(P<0.05)。结论 肿瘤微环境中浸润T淋巴细胞能直接诱导MDSC的募集,并对肿瘤生长产生影响。  相似文献   

19.
目的探讨小鼠胚胎干细胞(mESCs)来源的饲养细胞是否具备支持自体mESCs未分化生长的能力。方法先诱导mESCs形成类胚体(EB),进一步诱导其分化为成纤维细胞(mEB-dFE),以用作饲养细胞。采用形态学、集落形成率、细胞分化率、免疫细胞化学、碱性磷酸酶染色和RT-PCR对生长在mEB-dF上的mESCs的未分化特性进行鉴定。采用RT-PCR和诱导mESCs体内外分化方法鉴定mESCs多分化潜能特性。结果从EB三个发育阶段(EB贴壁10、15、20 d)分离出48个mEB-dF系,其中5个(来自15 d的EB)能维持mESCs未分化生长和多潜能性达10代以上。生长在这种饲养层上的mESCs与生长在小鼠胚胎成纤维细胞(MEF)上一样,其特性无明显差异,均表达碱性磷酸酶和特殊的mESCs标记,包括SSEA-1、OCT-4、NANOG,在体外形成EB和体内形成畸胎瘤;其他43个mEB-dF系则不具有这种能力。结论研究不仅为mESCs体外培养提供了一种新的饲养细胞,避免了MEF作饲养细胞的许多不足;而且还提示mESCs可诱导出不同功能的成纤维样细胞,其差异的分子机制值得进一步研究。  相似文献   

20.
目的探讨颈管细胞(EC)和化生细胞(MSC)在宫颈病变筛查中的临床价值。方法将28 952份液基细胞学标本按颈管细胞和化生细胞存在状态分为EC(+)/MSC(+)、EC(+)or MSC(+)及EC(-)/MSC(-)等3组,比较各组液基标本的满意率和细胞学异常的检出率。结果细胞学异常总检出率为3.54%,其中低级别上皮内瘤变(LSIL)、高级别上皮内瘤变(HSIL)及宫颈鳞癌(SCC)检出率分别为1.11%、0.36%、0.02%;细胞学异常总检出率在EC(+)/MSC(+)组最高(7.82%),其次是EC(+)or MSC(+)组(5.21%),EC(-)/MSC(-)组检出率最低(1.28%),差异具有统计学意义(P<0.01)。EC(+)/MSC(+)组液基标本满意率(细胞量>40%)达89.77%,EC(+)or MSC(+)组次之(77.67%),EC(-)/MSC(-)组为70.42%,差异有统计学意义(P<0.01)。结论液基细胞学检查标本中颈管细胞及化生细胞存在与否对液基标本质量和宫颈细胞学异常的总检出率有影响。  相似文献   

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