您现在的位置: 首页> 研究主题> 角朊细胞

角朊细胞

角朊细胞的相关文献在1987年到2018年内共计208篇,主要集中在皮肤病学与性病学、基础医学、外科学 等领域,其中期刊论文198篇、会议论文8篇、专利文献183993篇;相关期刊91种,包括西藏医药杂志、基础医学与临床、中华烧伤与创面修复杂志等; 相关会议7种,包括第四届华东六省一市整形外科学术会议暨2007年浙江省整形、美容学术会议、第四届全国解剖与临床学术研讨会、中华中医药学会皮肤科分会第二次学术会议等;角朊细胞的相关文献由392位作者贡献,包括陈璧、刘玉峰、汤朝武等。

角朊细胞—发文量

期刊论文>

论文:198 占比:0.11%

会议论文>

论文:8 占比:0.00%

专利文献>

论文:183993 占比:99.89%

总计:184199篇

角朊细胞—发文趋势图

角朊细胞

-研究学者

  • 陈璧
  • 刘玉峰
  • 汤朝武
  • 浦跃朴
  • 张建中
  • 王刚
  • 凌天牖
  • 殷金珠
  • 胡大海
  • 马圣清
  • 期刊论文
  • 会议论文
  • 专利文献

搜索

排序:

年份

    • 范东艳; 白玛多吉; 潘永越; 旦增顿珠; 徐福春; 王苹
    • 摘要: 目的探讨高山灌木苏嘎纯提取液是否具有抗氧化应激作用。方法采用MTT法检测终质量浓度分别为100、50、25 mg/L的苏嘎纯提取液对角朊细胞存活率影响;利用体外培养人角朊细胞系,给予H2O 2处理造成细胞氧化应激模型,采用100mg/L的苏嘎纯提取液预先作用角朊细胞,MTT法检测细胞存活率,并用Annexin V的方法检测细胞凋亡指数。结果通过MTT法检测,发现浓度为100mg/L以下的苏嘎纯提取液对细胞生长没有明显损伤;采用100mg/L的苏嘎纯提取液预处理角朊细胞,使该细胞存活明显增加;经过Annexin V细胞凋亡检测,发现100mg/L的苏嘎纯提取液能够抑制H2O2诱导的角朊细胞凋亡。结论苏嘎提取取液具有抑制角朊细胞凋亡,拮抗氧化应激的作用。
    • 范东艳; 白玛多吉; 潘永越; 旦增顿珠; 徐福春; 王苹
    • 摘要: 目的探讨高山灌木苏嘎纯提取液是否具有抗氧化应激作用。方法采用MTT法检测终质量浓度分别为100、50、25 mg/L的苏嘎纯提取液对角朊细胞存活率影响;利用体外培养人角朊细胞系,给予H2O 2处理造成细胞氧化应激模型,采用100mg/L的苏嘎纯提取液预先作用角朊细胞,MTT法检测细胞存活率,并用Annexin V的方法检测细胞凋亡指数。结果通过MTT法检测,发现浓度为100mg/L以下的苏嘎纯提取液对细胞生长没有明显损伤;采用100mg/L的苏嘎纯提取液预处理角朊细胞,使该细胞存活明显增加;经过Annexin V细胞凋亡检测,发现100mg/L的苏嘎纯提取液能够抑制H_2O_2诱导的角朊细胞凋亡。结论苏嘎提取取液具有抑制角朊细胞凋亡,拮抗氧化应激的作用。
    • 蔡伟栋; 柏莹; 祝先进; 郑培烝; 曹颖平; 周光炎
    • 摘要: 目的::探讨自体角朊细胞表达的B7-H1分子在混合皮肤移植中的作用和相关机制。方法:体外模拟混合皮肤移植模拟系统( MELC体系),通过流式细胞术检测角朊细胞B7-H1和淋巴细胞PD-1的表达。同时,实时荧光定量PCR检测淋巴细胞IL-10、Foxp3、GATA-3 mRNA的表达。结果:流式细胞仪检测结果显示,在有自体角朊细胞参与的MELC体系中,随着作用时间增加,角朊细胞上B7-H1的表达和淋巴细胞上PD-1的表达水平均明显升高,且具有时间依赖性(P<0.01);实时荧光定量PCR检测结果显示,随着作用时间增加,与无自体角朊细胞参与的MELC体系相比,在自体角朊细胞参与的MELC体系中,淋巴细胞IL-10、GATA-3、Foxp3 mRNA的表达水平均明显升高,且具有时间依赖性( P<0.01)。结论:在体外混合皮肤移植模拟系统中,自体角朊细胞通过表达共刺激分子B7-H1,上调淋巴细胞表面PD-1的表达,二者相结合,诱导Th2细胞和Foxp3+的Treg细胞分化,从而负向调节免疫反应。%Objective:To explore the role and mechanism of the B7-H1 expressed by auto-keratinocytes in the intermingled skin grafting model in vitro(MELC). Methods:The intermingled skin grafting model(MELC) was established in vitro. Flow cytometry was performed to detect the expressions of B7-H1 in keratinocytes. The expressions of PD-1 in lymphocytes were measured at the same time. The levels of IL-10,Foxp3 and GATA-3 mRNA in lymphocytes were detected by Real-time quantitative PCR. Results: Through flow eytometry,in the MELC with auto-keratinocytes,the expression of B7-H1 in auto-keratinocytes and the PD-1 in lymphocytes were rising trend and the rising rate was in time-dependent manners(P<0. 01). RT-PCR assay indicated that the relative levels of IL-10, Foxp3,GATA-3mRNA expression were significant raised and the rising rate was in time-dependent manners (P<0. 01). Conclusion:In the intermingled skin grafting model,the auto-keratinocytes could express B7-H1 to enhance the expression of PD-1 in T cells. When B7-H1 combined with PD-1,the Th2 cells and Foxp3+Tregs were induced and suppressed the immune response in the intermingled skin grafting model.
    • 沈燕君; 辛颖; 周彤; 孙小梅; 姜新
    • 摘要: 目的:探讨 IKKɑ调控表皮角朊细胞的增殖和分化及与 p63的关系。方法原代分离培养野生型(wildtype, WT)和 Ikkɑ基因敲除小鼠(Ikkα-/-)的表皮角朊细胞(WT-KTC 及 Ikkα-/-KTC),Western blot 检测 Ikkα-/-中 p63的表达。含0.5mM Ca2+培养基刺激分化后,免疫荧光染色观察分化标记物 Zonula occludens-1(ZO-1)及增殖标记物 BrdU 的表达。制备沉默 p63表达的慢病毒并感染 Ikkα-/-KTC,观察其增殖及分化能力的变化。结果在正常培养条件下,Ikkα-/-KTC中 BrdU 阳性细胞率显著高于 WT-KTC(P <0.05)。Ikkα-/-KTC 中 p63高表达。高钙条件刺激分化后,WT-KTC 中 Br-dU 表达显著降低,表达 ZO-1;而 Ikkα-/-KTC 的 BrdU 表达无明显变化;且无 ZO-1的表达。将表达 shRNA p63的慢病毒感染 Ikkα-/-KTC 沉默 p63后,含0.5 mM Ca2+培养基刺激细胞,Ikkα-/-KTC 中 BrdU 的表达显著降低,不表达分化标记物 ZO-1。结论IKKɑ调控表皮角朊细胞的增殖和分化,且其对增殖的调控通过 p63信号通路。%Objective The purpose of this study is to discuss the regulation of IKKɑon the proliferation and differ-entiation of keratinocytes and its relationship with p63 pathway.Methods The keratinocytes was separated and cul-tured from wild-type (WT-KTC)and Ikkɑknockout mice (Ikkα-/-KTC),and p63 expression was detected by Western blot in those cells.WT-KTC and Ikkα-/-KTC were stimulated with the medium including high calcium (0.5 mM).It was observed and compared between WT-KTC and Ikkα-/-KTC that the expression of Zonula occludens-1 (ZO-1)and BrdU by immunofluorescence staining,as well as p63 expression by Western blot.The proliferation and differentiation of Ikkα-/-KTC under the high calcium condition were evaluated after infected with the lentivirus expressed the p63-spe-cific shRNA.Results Under the normal cultured condition,the BrdU positive ratio of Ikkα-/-KTC and p63 expression were significantly higher than that of WT-KTC.With the high calcium stimulation,the BrdU positive ratio was decreased and ZO-1 expression was detected in WT-KTC,however,there was no ZO-1 expression and no change of the BrdU positive ratio in Ikkα-/-KTC.When the Ikkα-/-KTC were infected with the lentivirus expressed p63-specific shRNA and stimulated with high calcium,the BrdU expression was inhibited,while there was still no ZO-1 expression.Conclusion IKKɑregulates the prolifera-tion and differentiation of keratinocytes,and the effect on proliferation is through p63 pathway.
    • 吕璐; 杨文贤; 童亚林; 王磊; 莫永亮; 刘亮; 詹球; 李泳; 朱富军
    • 摘要: 目的 观察不同浓度人羊膜匀浆上清液(hAHS)对体外培养的SD大鼠角朊细胞生长的影响.方法 取SD大鼠背部皮肤,采用中性蛋白酶与胰蛋白酶复合消化的方法,分离第一代角朊细胞.将新鲜人羊膜制备成hAHS,采用考马斯亮蓝法、酶联免疫吸附试验分别测定hAHS中总蛋白含量和表皮生长因子(EGF)、碱性成纤维生长因子(bFGF)、血管内皮生长因子(VEGF)的浓度.用不同浓度hAHS对第一代角朊细胞进行体外培养:将细胞以2.5 ×104个/mL密度接种于96孔板中(每孔100 μL),随机数字表法将其分为体积分数0(对照组)及10%、15%、20%、25% hAHS组,用含10%胎牛血清低糖培养基培养24 h后,根据hAHS在低糖DMEM培养基中的不同体积分数进行换液,分别于培养即刻和培养24、48、96 h,用噻唑兰法检测各孔的吸光度值并绘制角朊细胞的生长曲线和计算各组细胞增殖率.采用SPSS13.0统计软件进行分析,各不同体积分数hAHS组的数据与对照组比较采用Dunnett-t检验.结果 hAHS中总蛋白含量为(675.435 ±9.215)×10-3 g/L,EGF、bFGF和VEGF的浓度分别为(470.625±2.546)×10-6、(4.121 ±0.026)×10-6和(0.172 ±0.002)×10-6g/L.与对照组比较,10% hAHS组培养48、96 h角朊细胞增殖率明显高于对照组,差异均有显著性统计学意义(=4.644、9.694,P值均小于0.01),15% hAHS组培养48、96 h角朊细胞增殖率均明显高于对照组,差异均有显著性统计学意义(t=4.766、6.648,P值均小于0.01);20% hAHS组培养24 h角朊细胞增殖率高于对照组,差异有统计学意义(t=2.272,P<0.05),培养48、96 h增殖率均明显高于对照组,差异有显著性统计学意义(t=5.027、8.861,P值均小于0.01);25% hAHS组培养48 h增殖率低于对照组,差异有统计学意义(=2.188,P<0.05),培养96 h增殖率明显低于对照组,差异有显著性统计学意义(t=5.147,P<0.01).结论 体积分数10%、15%、20% hAHS对体外培养的角朊细胞增殖有明显促进作用,且促增殖的效果随hAHS体积分数的增加而增强,但hAHS的体积分数在25%时角朊细胞的增殖受到抑制,平稳期相对缩短.
    • 刘艳苏; 王丽丽
    • 摘要: 目的 观察化浊解毒方对黄褐斑模型小鼠用药前后角朊细胞中c-myc基因表达的影响.方法 采用紫外线照射法造小鼠黄褐斑模型30只,用免疫组化方法检测小鼠模型皮损角朊细胞中c-myc基因的表达,并与正常对照组比较.测定给予化浊解毒方后c-myc基因表达的变化.结果 与正常对照组比较,小鼠黄褐斑模型皮损处c-myc基因表达明显增多(P<0.05);经化浊解毒方治疗后,c-myc基因表达明显下降,但与正常对照组比较无显著性差异(P>0.05).结论 化浊解毒方可能是通过降低表皮角朊细胞中c-myc基因的表达产生治疗效果.
    • 蔡典其; 杨春涛; 陈凤娟; 陈存特; 陈珏铭; 骆月妍; 江伟炽; 郑洁蓉; 张辉
    • 摘要: 目的 观察硫化氢(H2S)对丙酮醛(MGO)诱导的人皮肤角质形成细胞(HaCaT)损伤的影响.方法 HaCaT细胞分为MGO组、对照组和MGO+NSHD(H2S供体)组.MGO组用200、400、600 μmol/LMGO处理HaCaT细胞48 h造成细胞损伤;对照组给予等体积培养基;MGO+NSHD组应用400 μmol/LMGO处理,48 h前用50、100、200μmol/LNSHD预处理1h.通过CCK-8检测各组细胞活性.HaCaT细胞经100 μmol/LNSHD预处理1h,用20 μmol/L的H2S荧光探针WSP-1染色结合荧光照相术检测NSHD预处理1h组和对照组培养基和细胞内的H2S含量.将HaCaT细胞分为MGO组、MGO+NSHD组、NSHD组和对照组.MGO组仅用400 μmol/L MGO处理48 h;MGO+NSHD组在400 μmol/L MGO处理48 h前用100 μmol/L NSHD预处理1 h;NSHD组的细胞仅用100 μmol/L NSHD处理1h;对照组则给予等体积培养基.Hoechst 33258核染色结合荧光照相术检测细胞凋亡.Rh123染色结合荧光照相术检测线粒体膜电位(MMP).结果 HaCaT细胞经200、400和600 μmol/L MGO处理48 h,细胞活性依次为0.325±0.023、0.224±0.009和0.095±0.102,均低于对照组0.415±0.031(F=37.866,P<0.05),其中400 μmol/LMGO组细胞活性约为对照组的1/2,选用此浓度的MGO作为有效损伤浓度.100 μmol/L NSHD处理1h可使培养基和细胞内的H2S含量较对照组均增加.在400μmol/L MGO处理48 h前,分别用50、100和200 μnol/L NSHD预处理1h,细胞活性依次为0.235±0.028、0.314±0.017、0.346±0.020,均高于单独400μmol/L MGO处理组0.224±0.009(F=61.209,P<0.05).400 μmol/L MGO处理48 h后细胞凋亡率高于对照组和NSHD组[(32.6±3.5)%比(5.1±1.2)%、(3.4±0.8)%,均P<0.05],MMP低于对照组和NSHD组(28.5±2.9比46.1±3.8、48.6±4.3,均P<0.05).MGO+ NSHD组细胞凋亡率(18.3±2.6)%,低于MGO组但高于对照组和NSHD组(均P<0.05),MMP为38.9±3.2,高于MGO组但低于对照组和NSHD组(均P<0.05).结论 NSHD能通过释放H2S拮抗MGO诱导的皮肤细胞损伤.%Objective To investigate the effects of hydrogen sulfide (H2S) on methylglyoxal (MGO)-induced human skin keratinocytes (HaCaT cells) injury.Methods HaCaT cells were assigned to control group,MGO group and MGO+NSHD(H2S donor) group.The MGO group was treated with 200,400 and 600 μmol/L MGO for 48 h to induce cell injury.Control group was treated with an aliquot of plain culture medium.In the MGO +NSHD group,before treatment with 400 μmol/L MGO for 48 h,the cells were preconditioned with 50,100 and 200 μmol/L NSHD for 1 h to examine the protective effects of H2S according to cell viability as measured by cell counting kit 8.After treatment with 100 μmol/L NSHD for 1 h,the levels of H2S in medium and cells of NSHD and control groups were assayed with 20 μmol/L WSP-1,the H2S fluorescent probe,for photofluorography.HaCaT cells were assigned to control group,MGO group,NSHD group and MGO+NSHD group.The MGO group was treated with 400 μmol/L MGO for 48 h to induce cell injury.Control group was treated with an aliquot of plain culture medium.In the MGO+NSHD group,before treatment with 400 μmol/L MGO for 48 h,the cells were preconditioned with 100 μmol/L NSHD,NSHD group was treated with only 100 μmol/L NSHD for 1 h.Cellular apoptosis and mitochondrial membrane potential (MMP) were observed by Hoechst 33258 and Rh123 staining followed by photofluorography respectively.Results Treatment with 200,400 and 600 μmol/L MGO for 48 h,were attenuated HaCaT cell viability 0.325±0.023,0.224±0.009 and 0.095±0.102 compared with control group 0.415±0.031 (F=37.866,P < 0.05).Both in medium and in cells of NSHD group,the content of H2S was enhanced after treatment with 100 μmol/L NSHD for 1 h compared with control group.The viability in 400 μmol/L MGO treatment for 48 h group was halved compared with control group,and therefore 400 μmol/L was deemed the optimal concentration for MGO treatment.Before treatment with 400 μtmol/L MGO for 48 h,the cells were preconditioned with 50,100 and 200 μmol/L NSHD for 1 h,with the viability being 0.235±0.028,0.314± 0.017 and 0.346±0.020 respectively,There were higher than that in the individual 400 μmol/L MGO group (F=61.209,P < 0.05).Compared with control and NSHD groups,The treatment with 400 μmol/L MGO for 48 h increased the apoptotic rate from (5.1±1.2)%,(3.4±0.8)% to (32.6±3.5)%,and decreased the MMP from 46.1±3.8,48.6±4.3 to 28.5±2.9 (all P<0.05).Prior to treatment with 400 μmol/L MGO for 48 h in the presence of preconditioning with 100 μmol/L NSHD for 1 h,the apoptotic rate was decreased to (18.3±2.6)% and the MMP was increased to 38.9±3.2.The apoptotic rate in MGO+NSHD group was lower than that in MGO group but higher than those in control group and NSHD group.The MMP in MGO+NSHD group was higher than that in MGO group but lower than those in control group and NSHD group (all P<0.05).Conclusion NSHD protects human skin keratinocytes from MGO-induced injury via release of H2S.
    • 何传果; 李栋梁
    • 摘要: 目的 探讨离子微电流对体外培养角朊细胞增殖的作用.方法 建立HaCaT角朊细胞增殖的体外培养模型,观察不同浓度硝酸银溶液产生的离子电流对HaCaT细胞增殖的影响.结果不同浓度AgNO3溶液产生的离子电流微电流对HaCaT细胞增殖影响有显著性差异.结论 离子微电流对HaCaT细胞增殖有促进作用.
    • 池光范; 李美英; 赵贵芳; 邓继鸿; 刘晋宇; 李玉林
    • 摘要: 背景:皮肤真皮组织是皮肤损伤修复时除表皮基底层以外可形成表皮层结构的重要干细胞来源。目的:探索从人皮肤真皮组织中分离培养角朊干细胞样细胞的新方法。方法:将一定大小的成人腹部全层皮肤组织用Dispase过夜消化后去除表皮层结构,然后用0.1%I型胶原酶过夜消化,离心分离以获取真皮来源总细胞。将分离的细胞用含有体积分数1%N2,2%B27,20μg/L表皮生长因子和40pg/L碱性成纤维细胞生长因子的DMEM/F12(1:1)无血清培养液悬浮后以低密度接种于培养皿进行培养。采用RT-PCR和免疫细胞荧光染色法对其进行分析。结果与结论:RT-PCR分析结果显示所分离的真皮细胞中含有表达Lgr5和Lirgl等特异基因的毛囊来源干细胞;免疫细胞荧光分析结果显示其表达细胞角蛋白8和细胞角蛋白14。在无血清条件下培养6d时,可观察到表达细胞角蛋白14和整合素α6的“铺路石”样细胞克隆。进行传代培养后P1细胞表达角朊干细胞标志物CD29、细胞角蛋白14和P63。传代培养至P3,4时大部分细胞分化,不能继续传代。结果证实,以无血清培养液结合低密度培养法可直接从人真皮组织中有效地培养增殖活跃、细胞角蛋白14和P63阳性的角朊干细胞样细胞。
    • 池光范; 李美英; 赵贵芳; 邓继鸿; 刘晋宇; 李玉林
    • 摘要: 背景:皮肤真皮组织是皮肤损伤修复时除表皮基底层以外可形成表皮层结构的重要干细胞来源。目的:探索从人皮肤真皮组织中分离培养角朊干细胞样细胞的新方法。方法:将一定大小的成人腹部全层皮肤组织用 Dispase 过夜消化后去除表皮层结构,然后用0.1%Ⅰ型胶原酶过夜消化,离心分离以获取真皮来源总细胞。将分离的细胞用含有体积分数1% N2,2% B27,20μg/L表皮生长因子和40μg/L 碱性成纤维细胞生长因子的DMEM/F12(1∶1)无血清培养液悬浮后以低密度接种于培养皿进行培养。采用RT-PCR和免疫细胞荧光染色法对其进行分析。结果与结论:RT-PCR分析结果显示所分离的真皮细胞中含有表达Lgr5和Lirg1等特异基因的毛囊来源干细胞;免疫细胞荧光分析结果显示其表达细胞角蛋白8和细胞角蛋白14。在无血清条件下培养6 d时,可观察到表达细胞角蛋白14和整合素α6的“铺路石”样细胞克隆。进行传代培养后P1细胞表达角朊干细胞标志物CD29、细胞角蛋白14和P63。传代培养至P3,4时大部分细胞分化,不能继续传代。结果证实,以无血清培养液结合低密度培养法可直接从人真皮组织中有效地培养增殖活跃、细胞角蛋白14和P63阳性的角朊干细胞样细胞。%  BACKGROUND: Skin dermis is an essential stem cel source, except basal layer of epidermis, for forming epidermis structure during the process of skin wound healing. OBJECTIVE: To explore a new method for isolating and culturing keratinocyte-stem like cel s from human skin dermis. METHODS: Definitive sizes of ful skins from adult abdomen were digested with dispase overnight and the epidermal structure was discarded. The remaining dermis were digested with 0.1% type I col agenase overnight. Thereafter, the digested cel s were col ected by centrifugation, suspended in serum-free Dulbecco’s modified Eagle’s mediumutrient mixture F12 (1:1) containing 1% N 2 , 2% B27, 20 μg/L epidermal growth factor, 40 μg/L basic fibroblast growth factor, and cultured at a low cel density. The isolated and cultivated cel s were analyzed by reverse transcription-polymerase chain reaction and immunofluorescence analysis. RESULTS AND CONCLUSION: The reverse transcription-polymerase chain reaction analysis showed that, the cel s isolated from dermis contained hair fol icle stem cel s expressing Lgr5 and Lirg1. The immunofluorescence analysis showed that, the cel s isolated from dermis expressed cytokeratin 8 and cytokeratin 14. After cultivated in serum-free media for 6 days, some cytokeratin 14 and integrin-α6 positive cel colonies appeared “paving stone” like morphology. The passage 1 cel s expressed keratinocyte stem cel markers, such as cytokeratin 14, CD29 and P63. The cel proliferation rate was declined with passage times and almost al cel s were terminal y differentiated at passage 3 or 4. Experimental findings indicate that, keratinocyte stem-like cel s expressing CD29, cytokeratin 14 and P63 can be successful y isolated from human skin dermis by directly cultured at a low density and in serum-free media.
  • 查看更多

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号