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噬菌体肽库

噬菌体肽库的相关文献在1997年到2018年内共计122篇,主要集中在基础医学、肿瘤学、生物化学 等领域,其中期刊论文118篇、会议论文3篇、专利文献77422篇;相关期刊77种,包括吉林大学学报(理学版)、中国学术期刊文摘、微生物学免疫学进展等; 相关会议3种,包括全国氨基酸、活性肽研究开发与综合应用新技术、新设备交流研讨会、第十次全国生物制品学术会议、首届长三角科技论坛:长三角生物医药发展论坛等;噬菌体肽库的相关文献由433位作者贡献,包括刘北一、姜昌富、富宁等。

噬菌体肽库—发文量

期刊论文>

论文:118 占比:0.15%

会议论文>

论文:3 占比:0.00%

专利文献>

论文:77422 占比:99.84%

总计:77543篇

噬菌体肽库—发文趋势图

噬菌体肽库

-研究学者

  • 刘北一
  • 姜昌富
  • 富宁
  • 李天群
  • 雷家慧
  • 朱平
  • 时红波
  • 潘虹
  • 臧林泉
  • 周慧
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 李倩; 左璇; 邓成程; 尹东锋
    • 摘要: Objective To screen out the peptides specifically binding to Paclitaxel-resistant cervical cancer cells Hela (Hela/PTX).Methods Using drug-resistant cervical cancer Hela/PTX cells as the target cells,and the phage 7 peptide library was screened for 3 rounds by competitive binding tests.Using ELISA to determine the affinity of peptides to Hela/PTX cells(P/N value).Ten peptides with the high P/N value were selected to be sequenced,and we named a polypeptide with the highest P/N value and synthesized this peptide in vitro according to its sequence.The molecular weight of the pep-tide was determined by mass spectrometry.The affinity of the peptide to Hela/PTX and osteosarcoma cells was observed by cell affinity experiment.Results The selected peptide was named EP-7.Mass spectrometry analysis showed that the mo-lecular weight of EP-7 was 815.30D.The results of cell affinity test showed that there was green fluorescence in the cyto-plasm of Hela/PTX,but no green fluorescence was observed in osteosarcoma cells.Conclusion The peptide EP-7 which can bind specifically to Hela/PTX cells is successfully screened out.%目的 筛选与耐紫杉醇(PTX)的宫颈癌细胞系Hela(Hela/PTX)有特异性结合能力的多肽.方法 以耐药宫颈癌Hela/PTX细胞为靶细胞,通过竞争结合实验,对噬菌体随机七肽库进行3轮筛选.采用ELISA法测定筛选产物中多肽与Hela/PTX细胞的亲和力(以P/N值表示).选择P/N值较大的10条多肽进行测序,命名其中P/N值最大的一条多肽并根据其序列在体外合成此多肽.质谱检测所得多肽的分子量.细胞亲和力实验测定所得多肽与Hela/PTX、骨肉瘤细胞的亲和力.结果 筛选出的多肽命名为EP-7.质谱分析显示EP-7分子量815.30 D.细胞亲和力实验结果显示Hela/PTX细胞质内有绿色荧光,而骨肉瘤细胞内未观察到绿色荧光.结论 成功筛选出可以与Hela/PTX细胞特异性结合的多肽EP-7.
    • 陈益国; 侯晓睿; 朱平; 刘北一
    • 摘要: Objective:To analysis the Mimotopes of the peptide mimics to PGN using online softwares.Methods: Mimotopes of PGN were screened from 12-mers linear phage display peptide library by using anti-PGN McAb and the antigenicity of selected clones was identified by ELISA.The B cell epitopes,T cell epitopes of ′GRWxHxVxWAGL′ were estimated by DNAstar and online softwares.Results: 16 phage clones that bound with anti-PGN McAb were screened from 12-mers linear phage display peptide library.Among these positive clones,phage clones No.39 shared the conserved sequence:WxHx……AGL found in previous clone No.31(ATWxHxLxSAGL),which provoked an effective protective immunity against infection with S.aureus.To enhance the stability of the conformation as well as adding biotin on the N-ter-minal as a tag,the sequences ′39′ were redesigned and synthesized by adding S(serine)A(alanine) and GG(glycine)on the C-terminal of origin sequence(named SP39).Next,we estimated or predicted antigenic epitopes,T cell epitopes and scores binding to MHC of these peptides by using DNASTAR and online softwares(http://bio.dfci.harvard.edu/Tools/antigenic.pl,www.syfpeithi.de,http://www.darrenflower.info/mhcpred),indicating that SP39 contains sites bound both mice and human MHC.The sequences ′WxHxVxW-′ may be antigenic epitope as SP39,which contains a T cell epitope.Our results showed that both SP39 could bind to both anti-PGN McAb and a polyclonal antibody against S.aureus.Moreover PGN could inhibit the binding of SP39 to the anti-PGN McAb.These data indicated that SP39 mimic to epitopes on PGN.Conclusion: SP39(GRWxHxVxWAGLAGGS) probably display the mimotopes of PGN.%目的:在线预测肽聚糖(PGN)模拟抗表原位并鉴定其抗原性.方法:利用抗PGN单克隆抗体从12线性噬菌体随机展示肽库中筛选模拟PGN表位的阳性克隆,对阳性克隆进行DNA测序和推导氨基酸序列,结合生物信息学分析阳性序列GRWxHxVxWAGL的抗原性以及T细胞表位,根据分析对阳性序列进行修饰与合成,ELISA法鉴定阳性序列的抗原性.结果:经对噬菌体12线性肽库的3轮筛选,夹心ELISA鉴定得到16个与抗PGN单克隆抗体结合的克隆,DNA 测序并推导氨基酸序列,该序列与前期具有抗金黄色葡萄球菌活性序列No.31(ATWxHxLxSAGL)含有保守序列WxHx…AGL.在线分析(http://bio.dfci.harvard.edu/Tools/antigenic.pl,www.syfpeithi.de,http://www.darrenflower.info/mhcpred)表明,含保守序列的阳性序列GRWxHxVxWAGL包含与人和小鼠MHC结合表位 (-WxHxVxW-),C端加入AGGS后具有T细胞表位(DNAstar),据此合成线性肽Biotin-GRWxHxVxWAGLAGGS(命名为SP39).ELISA结果显示,SP39能与抗PGN单抗及抗S.aureus全菌多抗结合,PGN能抑制SP39与抗PGN单克隆抗体结合.结论:经噬菌体肽库筛选获得阳性序列GRWxHxVxWAGLAGGS,该序列可能模拟PGN抗原表位.
    • 石子齐; 宋喜贵; 侯颖春; 肖丽; 马妮; 高晓杰; 韩娟娟; 黎金媚; 侯依凡; 刘政; 薛昌志
    • 摘要: Using SKOV3 as the targeting cells,following the biopanning protocol modified by our lab,after 5 rounds of biopanning we screened out positive phage clones from Ph.D-12 phage displayed peptide library to bind ovarian cancer.Finally using ELISA,cytoimmunofluorescence and other methods,R20 clone was identified as the best clone to target SKOV3 cells with high specificity and sensitivity.The results above will be important primary data for the next study on the reagent or drug delivery system of the targeting diagnosis and therapy of ovarian cancer.%采用改良的生物淘筛(Biopanning)流程,以人卵巢癌细胞为靶细胞进行5轮消减筛选,从噬菌体展示12肽文库(Ph.D-12 phage displayed peptide library)筛选到靶向人卵巢癌的12肽克隆,通过ELISA、细胞免疫荧光法等方法从细胞水平鉴定了最佳阳性多肽噬菌体克隆R20靶向卵巢癌细胞的特异性和敏感性.结果显示:R20可以特异的、敏感的与卵巢癌细胞SKOV3结合,不与正常细胞或者其他癌细胞结合,具备进一步研发为卵巢癌导向分子元件而应用于卵巢癌靶向诊治试剂或药物研发的潜力.
    • 亓春玲; 刘飞; 孔冕; 孟潘庆; 赵书平; 李宝江
    • 摘要: objectiveTo screen the polypeptides specifically bonding to triple negative breast cancer primary cells by phage display peptide library and to provide experimental support for exploring therapeutic targets for triple negative breast cancer.MethodsNegative breast cancer primary cells isolated and cultured from fresh cancer tissue were used as target cells and hs578bst cells as absorber cells for 3 round subtraction screening from phage display random 12 peptide library. 15 enriched binding clones were selected randomly and amplified, their affinity and specificity were identified by ELISA and DAB staining, positive phage clones were sequenced.ResuIts After 3 rounds of screening, the phages which could bind to target cells were enriched obviously. ELISA showed 11 phage clones were positive, NO.5 phage was identified to have the strongest specific affinity to target cells by ELISA and DAB staining, the peptide sequence of NO.5 phage was PHETLTSFVRRG after DNA sequencing and translation. ConcIusionThe specific peptide bonding to negative breast cancer primary cells was screened from a phage display random peptide library, the peptide could used as drug-loaded vector for targeted therapy of triple negative breast cancer.%目的:利用噬菌体肽库筛选技术获得与三阴性乳腺癌原代细胞特异性结合的多肽,为探索三阴性乳腺癌的治疗靶点提供试验支持。方法从三阴性乳腺癌新鲜组织分离、培养原代癌细胞并以其为靶细胞,以hs578bst人正常乳腺细胞为吸附细胞,对噬菌体随机十二肽库进行三轮减性筛选;随机挑取15株富集后的噬菌体单克隆,ELISA及DAB染色鉴定噬菌体克隆的亲和力及特异性,并对阳性噬菌体单克隆测序。结果经过3轮筛选,噬菌体克隆得以明显富集,随机挑取的15株噬菌体单克隆中有11株为阳性,ELISA及DAB鉴定发现,5号噬菌体(phage-5)对靶细胞亲和力及特异性最强,经DNA测序和推导,其多肽序列为PHETLTSFVRRG。结论从噬菌体随机十二肽库中成功筛选出与三阴性乳腺癌原代细胞特异性结合的多肽,该多肽可能作为三阴性乳腺癌靶向治疗药物的载体。
    • 李晓霞; 师建国; 陈果; 贺雪姣
    • 摘要: 目的:从噬菌体12肽库中筛选出入表皮生长因子受体2(Her2)的抗原模拟表位.方法:以曲妥珠单抗为靶分子,在噬菌体12肽库中进行3轮淘选,以ELISA方法及竞争抑制实验鉴定阳性克隆,并对阳性克隆株进行测序.结果:经过3轮淘选,与曲妥珠单抗结合的噬菌体得到了有效富集,回收率从(2.00×10-8)%增加到(2.87 ×10-5)%,ELISA显示20个克隆中筛选获得了18个与曲妥珠单抗具有较高亲和性的阳性噬菌体,对阳性克隆测序获得两种氨基酸序列:HTSSLWHLFRST、VHWDFRQWWQPS.结论:噬菌体展示技术可成功筛选到表皮生长因子2模拟表位,为探索乳腺癌的防治研究创造了条件.
    • 刘美红; 贺海平
    • 摘要: Objective:To find the new specific tumor marker for breast cancer through screening the phage display peptide library in the serum of patients with cervical cancer. Methods:Three rounds of subtract biopanning were car-ried out. ELISA was used to confirm the specificity of phages clones. Results:After three rounds of screening,the en-richment ratio was increased. The eluted were enrich to 100 fold. The phage with high specificity was found and con-firm in the serum of 50 cases of cervical cancer patients and normal people by ELISA. It have potential value for early diagnosis of cervical cancer. Conclusion:A high affinity dodecapeptide specific for the serum of cervical cancer was obtained through phage display library. It can be used for the next step in tumor marker of cervical cancer and early diagnosis of cervical cancer.%目的:用噬菌体随机12肽库对宫颈癌患者血清进行差异性筛选,筛选出能与宫颈癌患者血清特异性结合的肿瘤标志物。方法:应用噬菌体随机12肽库对宫颈癌患者和正常人血清进行三轮差异性筛选,用ELISA 法检测噬菌体克隆对宫颈癌患者血清结合的特异性。结果:经过三轮筛选,噬菌体富集率逐轮提高,提高近100倍。用 ELISA 法对50例宫颈癌患者血清和50例健康者血清检测验证,其中获得一株与宫颈癌患者血清特异结合较好的噬菌体,对宫颈癌的早期诊断具有潜在价值。结论:筛选出能与早期宫颈癌患者血清高亲和力特异结合的短肽,为研究宫颈癌肿瘤标志物及宫颈癌的早期诊断奠定了基础。
    • 汪静; 高晓娟; 吴秀丽
    • 摘要: 目的 利用噬菌体展示肽库技术筛选与人乳腺癌细胞表面HER2特异性结合的活性短肽.方法 以过表达HER2的人乳腺癌细胞SK-BR-3为靶细胞,Herceptin(R)作为竞争性洗脱剂,采用竞争结合实验,经四轮亲和筛选,获得阳性噬菌体富集;通过ELISA评价与SK-BR-3细胞高特异性结合的阳性噬菌体克隆;分析DNA测序结果并推导短肽序列;采用MTT法比较筛选短肽与Herceptin(R)对SK-BR-3细胞生长的抑制率.结果 随机挑选的16个克隆对SK-BR-3细胞具有特异性结合力,其中S-1阳性克隆与靶细胞特异结合活性最强,且其短肽序列对SK-BR-3细胞生长具有一定的抑制作用.结论 通过噬菌体展示肽库对过表达HER2乳腺癌细胞进行筛选,获得与SK-BR-3细胞高特异性结合的活性短肽序列,为设计乳腺癌靶向药物与导向治疗提供参考数据.
    • 李蕊; 王瀚; 马彩霞; 郭永娥; 王琦轩; 胥谨慧; 吴琼; 许楠; 侯颖春
    • 摘要: 从噬菌体随机十二肽库筛选出两个与人胃腺癌细胞 SGC-7901表面特异结合的阳性噬菌体克隆,用细胞免疫荧光法鉴定这些克隆与SGC-7901结合的特异性,据亲和力确定克隆GSP5为最佳克隆,进一步以免疫细胞/组织化学等方法鉴定此克隆与胃癌细胞和临床组织的特异性/敏感性。结果显示,噬菌体克隆GSP5对SGC-7901细胞及胃癌临床组织具有较好的结合特异性/敏感性。该多肽有望成为胃癌分子影像诊断与靶向治疗的候选多肽导向分子。%Using phage displayed peptides library screening method,we previously screened out two peptides specifically binding to gastric carcinoma cell SGC-7901.The specific affinity of GSP5 clone was confirmed as best using immunofluorescence assays.Then,the specific affinities of GSP5 clone to the cells and tissues of gastric cancer were further confirmed using different immunofluorescence assays under different microscopes.The results show that the peptide clone GSP5 binds to the cells and clinical tissues of gastric cancer at high affinity.Therefore,the clone GSP5 is of the potential to be used as a peptide probe for the early diagnosis and targeting therapy of gastric cancer.
    • 贺雪姣; 师建国; 陈果; 李晓霞
    • 摘要: 目的 利用噬菌体12肽库进行生物淘洗,筛选表皮生长因子受体(EGFR)抗原模拟表位. 方法 以抗EGFR的单克隆抗体药物西妥昔单抗及尼妥珠单抗为靶分子,在噬菌体12肽库中淘选表皮生长因子受体抗原模拟表位,经过3轮淘选后,选择可与西妥昔单抗及尼妥珠单抗有不同程度结合的噬菌体,对阳性产物进行克隆及测序. 结果 发现17个和21个阳性噬菌体分别与西妥昔单抗及尼妥珠单抗不同程度地结合;阳性克隆测序结果分别获得了3种不同的氨基酸序列. 结论 初步利用西妥昔单抗及尼妥珠单抗可从噬菌体展示的随机肽库中筛选到表皮生长因子受体相关抗原表位.
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