葡甘露聚糖抑菌护理凝胶(Glucomannan antibacteria care gel,GACG)是本课题组开发的一款已上市的治疗女性阴道炎症的抑菌护理剂。本文介绍了GACG的制备工艺,通过建立高危型HPV 16假病毒感染人胚肾293FT细胞模型,重点研究GACG的主要活...葡甘露聚糖抑菌护理凝胶(Glucomannan antibacteria care gel,GACG)是本课题组开发的一款已上市的治疗女性阴道炎症的抑菌护理剂。本文介绍了GACG的制备工艺,通过建立高危型HPV 16假病毒感染人胚肾293FT细胞模型,重点研究GACG的主要活性成分白芨葡甘露聚糖、积雪草总苷和蛇床子精油对高危型人乳头瘤病毒16(Human papillomavirus type 16,HPV 16)的抗病毒作用。研究发现积雪草总苷和蛇床子精油对高危型HPV 16假病毒具有明显的抗病毒活性,分子对接进一步探究了积雪草苷、羟基积雪草苷以及蛇床子素对HPV 16抑制的可能机制。展开更多
Metastasis and paclitaxel(PTX)resistance are the main reason for the poor prognosis of ovarian cancer(OC).Evidence showed that RNA-binding proteins(RBPs)and long noncoding RNAs(lncRNAs)can modulate post-transcriptiona...Metastasis and paclitaxel(PTX)resistance are the main reason for the poor prognosis of ovarian cancer(OC).Evidence showed that RNA-binding proteins(RBPs)and long noncoding RNAs(lncRNAs)can modulate post-transcriptional regulation.The aim of this study was to determine the relationship among RBP,lncRNA and OC and to further guide clinical therapy.Immunohistochemistry revealed that pre-mRNA processing factor 6(PRPF6)was upregulated in OC chemoresistant tissues and was closely related to advanced(Federation of International of Gynecologists and Obstetricians)FIGO stages and chemo-resistance.PRPF6 promoted progression,and PTX resistance in vitro and in vivo.And the transcripts of small nucleolar RNA host gene SNHG16-L/S were differentially expressed in OC cells and tissues as detected through real-time PCR(RT-PCR).SNHG16-L/S had opposite effects on progression and PTX resistance in OC.Mechanistically,SNHG16-L inhibited GATA-binding protein 3(GATA3)transcription by binding to CCAAT/enhancer-binding protein B(CEBPB).Moreover,PRPF6 induced the alternative splicing of SNHG16,causing downregulation of SNHG16-L and,leading to the upregulation of GATA3 expression to further promote metastasis and PTX-resistance in OC.Totally,these data unveiled that PRPF6 promotes metastasis and PTX resistance of OC through SNHG16-L/CEBPB/GATA3 axis,which provides a new direction for OC treatment.展开更多
The immature embryos of wheat cultivars Liaochun10, Tiechun1 and Fengqiang3 were bombarded with gold particles coated with pti5 vp16 by gene gun and disease resistant regenerated plants were attained. In order to...The immature embryos of wheat cultivars Liaochun10, Tiechun1 and Fengqiang3 were bombarded with gold particles coated with pti5 vp16 by gene gun and disease resistant regenerated plants were attained. In order to confirm that the plants are genuine transformed ones, a series of molecular tests were conducted as follows. Firstly, transient GUS expression test on embryos two days after bombardment was done. There were many obvious blue spots produced on the surface of bombarded embryos after GUS staining, in which the maximum reached to 85 blue spots per embryo. Secondly, PCR test was performed with DNA from the regenerated plants obtained after double selection with ppt. 6 plants were found PCR test positive. At last, further verification analysis using dot hybridization and southern blotting was carried out on those PCR positive plants and the strong hybridization signals appeared as expected. All the above tests were uniformly indicated that the disease resistant regenerated plants were true transgenic plants. When inoculated with Blumeria graminis, transgenic wheat plants of PCR positive results were mostly resistant(R) after 7 days, and resis tant, moderate resistant(MR), moderate susceptible(MS) at 14 days respectively. The disease severity of them was distinctively lighter than that of control.展开更多
程序性细胞死亡因子5(programmed celldeath5,PDCD5)在多种肿瘤细胞中表达明显降低。携带pdcd5基因的靶向增殖型腺病毒SG611-pdcd5对白血病细胞具有杀伤作用,对正常细胞具有相对保护作用。本研究旨在观察联合应用SG611-pdcd5与低剂量化...程序性细胞死亡因子5(programmed celldeath5,PDCD5)在多种肿瘤细胞中表达明显降低。携带pdcd5基因的靶向增殖型腺病毒SG611-pdcd5对白血病细胞具有杀伤作用,对正常细胞具有相对保护作用。本研究旨在观察联合应用SG611-pdcd5与低剂量化疗药物依托泊甙(etoposide,VP-16)对白血病细胞系K562的作用。以不同浓度梯度的药物或不同感染复数(multiplicity of infection,MOI)的病毒液作用于K562细胞,培养48小时后用MTT法检测细胞存活率。结果表明,与SG611-pdcd5(MOI=40)或VP-16(0.5μg/ml)单独作用组相比,SG611-pdcd5(MOI=40)+VP-16(0.5μg/ml)组细胞存活率明显降低(p均<0.05),分别为(59.45±4.12)%、(82.91±3.41)%及(42.00±5.75)%。SG611-pdcd5与VP-16的协同作用强于PDCD5蛋白或携带pdcd5基因的非增殖型腺病毒Ad-pdcd5与VP-16的协同作用(p均<0.05);VP-16浓度为4.0μg/ml时,VP-16+SG611-pdcd5(MOI=40)组、VP-16+proPDCD5(40μg/ml)组及VP-16+Ad-pdcd5(MOI=80)组细胞存活率分别为(37.09±1.89)%、(52.36±1.64)%及(73.64±4.33)%。结论:SG611-pdcd5具有促进低剂量VP-16杀伤K562细胞的作用,二者联合可增强对白血病细胞的杀伤作用。展开更多
基金supported by The Outstanding Scientific Fund of Shengjing Hospital(Grant No.201705).
文摘Metastasis and paclitaxel(PTX)resistance are the main reason for the poor prognosis of ovarian cancer(OC).Evidence showed that RNA-binding proteins(RBPs)and long noncoding RNAs(lncRNAs)can modulate post-transcriptional regulation.The aim of this study was to determine the relationship among RBP,lncRNA and OC and to further guide clinical therapy.Immunohistochemistry revealed that pre-mRNA processing factor 6(PRPF6)was upregulated in OC chemoresistant tissues and was closely related to advanced(Federation of International of Gynecologists and Obstetricians)FIGO stages and chemo-resistance.PRPF6 promoted progression,and PTX resistance in vitro and in vivo.And the transcripts of small nucleolar RNA host gene SNHG16-L/S were differentially expressed in OC cells and tissues as detected through real-time PCR(RT-PCR).SNHG16-L/S had opposite effects on progression and PTX resistance in OC.Mechanistically,SNHG16-L inhibited GATA-binding protein 3(GATA3)transcription by binding to CCAAT/enhancer-binding protein B(CEBPB).Moreover,PRPF6 induced the alternative splicing of SNHG16,causing downregulation of SNHG16-L and,leading to the upregulation of GATA3 expression to further promote metastasis and PTX-resistance in OC.Totally,these data unveiled that PRPF6 promotes metastasis and PTX resistance of OC through SNHG16-L/CEBPB/GATA3 axis,which provides a new direction for OC treatment.
文摘The immature embryos of wheat cultivars Liaochun10, Tiechun1 and Fengqiang3 were bombarded with gold particles coated with pti5 vp16 by gene gun and disease resistant regenerated plants were attained. In order to confirm that the plants are genuine transformed ones, a series of molecular tests were conducted as follows. Firstly, transient GUS expression test on embryos two days after bombardment was done. There were many obvious blue spots produced on the surface of bombarded embryos after GUS staining, in which the maximum reached to 85 blue spots per embryo. Secondly, PCR test was performed with DNA from the regenerated plants obtained after double selection with ppt. 6 plants were found PCR test positive. At last, further verification analysis using dot hybridization and southern blotting was carried out on those PCR positive plants and the strong hybridization signals appeared as expected. All the above tests were uniformly indicated that the disease resistant regenerated plants were true transgenic plants. When inoculated with Blumeria graminis, transgenic wheat plants of PCR positive results were mostly resistant(R) after 7 days, and resis tant, moderate resistant(MR), moderate susceptible(MS) at 14 days respectively. The disease severity of them was distinctively lighter than that of control.
文摘程序性细胞死亡因子5(programmed celldeath5,PDCD5)在多种肿瘤细胞中表达明显降低。携带pdcd5基因的靶向增殖型腺病毒SG611-pdcd5对白血病细胞具有杀伤作用,对正常细胞具有相对保护作用。本研究旨在观察联合应用SG611-pdcd5与低剂量化疗药物依托泊甙(etoposide,VP-16)对白血病细胞系K562的作用。以不同浓度梯度的药物或不同感染复数(multiplicity of infection,MOI)的病毒液作用于K562细胞,培养48小时后用MTT法检测细胞存活率。结果表明,与SG611-pdcd5(MOI=40)或VP-16(0.5μg/ml)单独作用组相比,SG611-pdcd5(MOI=40)+VP-16(0.5μg/ml)组细胞存活率明显降低(p均<0.05),分别为(59.45±4.12)%、(82.91±3.41)%及(42.00±5.75)%。SG611-pdcd5与VP-16的协同作用强于PDCD5蛋白或携带pdcd5基因的非增殖型腺病毒Ad-pdcd5与VP-16的协同作用(p均<0.05);VP-16浓度为4.0μg/ml时,VP-16+SG611-pdcd5(MOI=40)组、VP-16+proPDCD5(40μg/ml)组及VP-16+Ad-pdcd5(MOI=80)组细胞存活率分别为(37.09±1.89)%、(52.36±1.64)%及(73.64±4.33)%。结论:SG611-pdcd5具有促进低剂量VP-16杀伤K562细胞的作用,二者联合可增强对白血病细胞的杀伤作用。
